diff options
134 files changed, 4708 insertions, 2127 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index e0f346d201ed..72f319012c1e 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -811,6 +811,9 @@ and is between 256 and 4096 characters. It is defined in the file hlt [BUGS=ARM,SH] + hvc_iucv= [S390] Number of z/VM IUCV Hypervisor console (HVC) + back-ends. Valid parameters: 0..8 + i8042.debug [HW] Toggle i8042 debug mode i8042.direct [HW] Put keyboard port into non-translated mode i8042.dumbkbd [HW] Pretend that controller can only read data from diff --git a/Documentation/kmsg/s390/hvc_iucv b/Documentation/kmsg/s390/hvc_iucv new file mode 100644 index 000000000000..0040eb18b950 --- /dev/null +++ b/Documentation/kmsg/s390/hvc_iucv @@ -0,0 +1,50 @@ +/*? + * Text: "The z/VM IUCV Hypervisor console cannot be used without z/VM.\n" + * Severity: Warning + * Description: + * On Linux instances that run in environments other than the z/VM hypervisor, + * z/VM IUCV is not available and the z/VM IUCV Hypervisor console cannot be + * used. + * User action: + * If the system does not run on a z/VM guest virtual machine, + * ignore this message. + */ + +/*? + * Text: "Could not create new z/VM IUCV HVC backend rc=%d.\n" + * Severity: Error + * Parameter: + * @1: Return code of the operation that has failed. + * Description: + * The driver initialization has failed to allocate a new z/VM IUCV HVC + * back-end. A common cause might be that there are not sufficient memory + * available. + * User action: + * Enure that the z/VM guest virtual machine has sufficient memory. + */ + +/*? + * Text: "Could not register iucv handler (rc=%d).\n" + * Severity: Error + * Parameter: + * @1: Return code from the IUCV registration. + * Description: + * The driver initialization has failed to register its z/VM IUCV callbacks to + * handle z/VM IUCV connections, and sending/receiving of IUCV messages. + * User action: + * Typically there might be additional IUCV error messages at the Linux kernel + * startup. Check the system log files. + */ + +/*? + * Text: "Not enough memory for driver initialization (rs=%d).\n" + * Severity: Error + * Parameter: + * @1: Memory allocation has failed: 1 = kmem_cache; and 2 = mempool. + * Description: + * The z/VM IUCV Hypervisor console back-end initialization has faild, because + * of a general memory allocation failure. + * User action: + * Ensure that the z/VM guest virtual machine has sufficient memory. + * See the your Linux distributor manuals for minimum system requirements. + */ diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h index d812929390e4..cd46f023ec6d 100644 --- a/arch/powerpc/include/asm/elf.h +++ b/arch/powerpc/include/asm/elf.h @@ -267,7 +267,7 @@ extern int ucache_bsize; #define ARCH_HAS_SETUP_ADDITIONAL_PAGES struct linux_binprm; extern int arch_setup_additional_pages(struct linux_binprm *bprm, - int executable_stack); + int uses_interp); #define VDSO_AUX_ENT(a,b) NEW_AUX_ENT(a,b); #endif /* __KERNEL__ */ diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index 65639a43e644..f7ec7d0888fe 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -184,8 +184,7 @@ static void dump_vdso_pages(struct vm_area_struct * vma) * This is called from binfmt_elf, we create the special vma for the * vDSO and insert it into the mm struct tree */ -int arch_setup_additional_pages(struct linux_binprm *bprm, - int executable_stack) +int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) { struct mm_struct *mm = current->mm; struct page **vdso_pagelist; diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 8116a3328a19..7a18d2380e2c 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -43,6 +43,9 @@ config GENERIC_HWEIGHT config GENERIC_TIME def_bool y +config GENERIC_TIME_VSYSCALL + def_bool y + config GENERIC_CLOCKEVENTS def_bool y @@ -70,6 +73,8 @@ mainmenu "Linux Kernel Configuration" config S390 def_bool y + select USE_GENERIC_SMP_HELPERS if SMP + select HAVE_FUNCTION_TRACER select HAVE_OPROFILE select HAVE_KPROBES select HAVE_KRETPROBES @@ -225,6 +230,14 @@ config MARCH_Z9_109 Class (z9 BC). The kernel will be slightly faster but will not work on older machines such as the z990, z890, z900, and z800. +config MARCH_Z10 + bool "IBM System z10" + help + Select this to enable optimizations for IBM System z10. The + kernel will be slightly faster but will not work on older + machines such as the z990, z890, z900, z800, z9-109, z9-ec + and z9-bc. + endchoice config PACK_STACK @@ -343,16 +356,6 @@ config QDIO If unsure, say Y. -config QDIO_DEBUG - bool "Extended debugging information" - depends on QDIO - help - Say Y here to get extended debugging output in - /sys/kernel/debug/s390dbf/qdio... - Warning: this option reduces the performance of the QDIO module. - - If unsure, say N. - config CHSC_SCH tristate "Support for CHSC subchannels" help diff --git a/arch/s390/Makefile b/arch/s390/Makefile index 792a4e7743ce..578c61f15a4b 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -34,6 +34,7 @@ cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5) cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900) cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990) cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109) +cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10) #KBUILD_IMAGE is necessary for make rpm KBUILD_IMAGE :=arch/s390/boot/image diff --git a/arch/s390/appldata/appldata.h b/arch/s390/appldata/appldata.h index 17a2636fec0a..f0b23fc759ba 100644 --- a/arch/s390/appldata/appldata.h +++ b/arch/s390/appldata/appldata.h @@ -26,10 +26,6 @@ #define CTL_APPLDATA_NET_SUM 2125 #define CTL_APPLDATA_PROC 2126 -#define P_INFO(x...) printk(KERN_INFO MY_PRINT_NAME " info: " x) -#define P_ERROR(x...) printk(KERN_ERR MY_PRINT_NAME " error: " x) -#define P_WARNING(x...) printk(KERN_WARNING MY_PRINT_NAME " status: " x) - struct appldata_ops { struct list_head list; struct ctl_table_header *sysctl_header; diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c index a06a47cdd5e0..27b70d8a359c 100644 --- a/arch/s390/appldata/appldata_base.c +++ b/arch/s390/appldata/appldata_base.c @@ -10,6 +10,9 @@ * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> */ +#define KMSG_COMPONENT "appldata" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> @@ -32,7 +35,6 @@ #include "appldata.h" -#define MY_PRINT_NAME "appldata" /* for debug messages, etc. */ #define APPLDATA_CPU_INTERVAL 10000 /* default (CPU) time for sampling interval in milliseconds */ @@ -390,8 +392,8 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp, (unsigned long) ops->data, ops->size, ops->mod_lvl); if (rc != 0) { - P_ERROR("START DIAG 0xDC for %s failed, " - "return code: %d\n", ops->name, rc); + pr_err("Starting the data collection for %s " + "failed with rc=%d\n", ops->name, rc); module_put(ops->owner); } else ops->active = 1; @@ -401,8 +403,8 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp, (unsigned long) ops->data, ops->size, ops->mod_lvl); if (rc != 0) - P_ERROR("STOP DIAG 0xDC for %s failed, " - "return code: %d\n", ops->name, rc); + pr_err("Stopping the data collection for %s " + "failed with rc=%d\n", ops->name, rc); module_put(ops->owner); } spin_unlock(&appldata_ops_lock); diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c index eb44f9f8ab91..55c80ffd42b9 100644 --- a/arch/s390/appldata/appldata_os.c +++ b/arch/s390/appldata/appldata_os.c @@ -9,6 +9,9 @@ * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> */ +#define KMSG_COMPONENT "appldata" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> @@ -22,7 +25,6 @@ #include "appldata.h" -#define MY_PRINT_NAME "appldata_os" /* for debug messages, etc. */ #define LOAD_INT(x) ((x) >> FSHIFT) #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100) @@ -143,21 +145,16 @@ static void appldata_get_os_data(void *data) (unsigned long) ops.data, new_size, ops.mod_lvl); if (rc != 0) - P_ERROR("os: START NEW DIAG 0xDC failed, " - "return code: %d, new size = %i\n", rc, - new_size); + pr_err("Starting a new OS data collection " + "failed with rc=%d\n", rc); rc = appldata_diag(APPLDATA_RECORD_OS_ID, APPLDATA_STOP_REC, (unsigned long) ops.data, ops.size, ops.mod_lvl); if (rc != 0) - P_ERROR("os: STOP OLD DIAG 0xDC failed, " - "return code: %d, old size = %i\n", rc, - ops.size); - else - P_INFO("os: old record size = %i stopped\n", - ops.size); + pr_err("Stopping a faulty OS data " + "collection failed with rc=%d\n", rc); } ops.size = new_size; } @@ -178,8 +175,8 @@ static int __init appldata_os_init(void) max_size = sizeof(struct appldata_os_data) + (NR_CPUS * sizeof(struct appldata_os_per_cpu)); if (max_size > APPLDATA_MAX_REC_SIZE) { - P_ERROR("Max. size of OS record = %i, bigger than maximum " - "record size (%i)\n", max_size, APPLDATA_MAX_REC_SIZE); + pr_err("Maximum OS record size %i exceeds the maximum " + "record size %i\n", max_size, APPLDATA_MAX_REC_SIZE); rc = -ENOMEM; goto out; } diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c index e33f32b54c08..c42cd898f68b 100644 --- a/arch/s390/crypto/aes_s390.c +++ b/arch/s390/crypto/aes_s390.c @@ -17,6 +17,9 @@ * */ +#define KMSG_COMPONENT "aes_s390" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <crypto/aes.h> #include <crypto/algapi.h> #include <linux/err.h> @@ -169,7 +172,8 @@ static int fallback_init_cip(struct crypto_tfm *tfm) CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK); if (IS_ERR(sctx->fallback.cip)) { - printk(KERN_ERR "Error allocating fallback algo %s\n", name); + pr_err("Allocating AES fallback algorithm %s failed\n", + name); return PTR_ERR(sctx->fallback.blk); } @@ -349,7 +353,8 @@ static int fallback_init_blk(struct crypto_tfm *tfm) CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK); if (IS_ERR(sctx->fallback.blk)) { - printk(KERN_ERR "Error allocating fallback algo %s\n", name); + pr_err("Allocating AES fallback algorithm %s failed\n", + name); return PTR_ERR(sctx->fallback.blk); } @@ -515,9 +520,8 @@ static int __init aes_s390_init(void) /* z9 109 and z9 BC/EC only support 128 bit key length */ if (keylen_flag == AES_KEYLEN_128) - printk(KERN_INFO - "aes_s390: hardware acceleration only available for " - "128 bit keys\n"); + pr_info("AES hardware acceleration is only available for" + " 128-bit keys\n"); ret = crypto_register_alg(&aes_alg); if (ret) diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c index b9a1ce1f28e4..b1e892a43816 100644 --- a/arch/s390/hypfs/hypfs_diag.c +++ b/arch/s390/hypfs/hypfs_diag.c @@ -3,10 +3,13 @@ * Hypervisor filesystem for Linux on s390. Diag 204 and 224 * implementation. * - * Copyright (C) IBM Corp. 2006 + * Copyright IBM Corp. 2006, 2008 * Author(s): Michael Holzheu <holzheu@de.ibm.com> */ +#define KMSG_COMPONENT "hypfs" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/types.h> #include <linux/errno.h> #include <linux/string.h> @@ -527,13 +530,14 @@ __init int hypfs_diag_init(void) int rc; if (diag204_probe()) { - printk(KERN_ERR "hypfs: diag 204 not working."); + pr_err("The hardware system does not support hypfs\n"); return -ENODATA; } rc = diag224_get_name_table(); if (rc) { diag204_free_buffer(); - printk(KERN_ERR "hypfs: could not get name table.\n"); + pr_err("The hardware system does not provide all " + "functions required by hypfs\n"); } return rc; } diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c index 36313801cd5c..65e93c7ce784 100644 --- a/arch/s390/hypfs/inode.c +++ b/arch/s390/hypfs/inode.c @@ -2,10 +2,13 @@ * arch/s390/hypfs/inode.c * Hypervisor filesystem for Linux on s390. * - * Copyright (C) IBM Corp. 2006 + * Copyright IBM Corp. 2006, 2008 * Author(s): Michael Holzheu <holzheu@de.ibm.com> */ +#define KMSG_COMPONENT "hypfs" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/types.h> #include <linux/errno.h> #include <linux/fs.h> @@ -200,7 +203,7 @@ static ssize_t hypfs_aio_write(struct kiocb *iocb, const struct iovec *iov, else rc = hypfs_diag_create_files(sb, sb->s_root); if (rc) { - printk(KERN_ERR "hypfs: Update failed\n"); + pr_err("Updating the hypfs tree failed\n"); hypfs_delete_tree(sb->s_root); goto out; } @@ -252,8 +255,7 @@ static int hypfs_parse_options(char *options, struct super_block *sb) break; case opt_err: default: - printk(KERN_ERR "hypfs: Unrecognized mount option " - "\"%s\" or missing value\n", str); + pr_err("%s is not a valid mount option\n", str); return -EINVAL; } } @@ -317,7 +319,7 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent) } hypfs_update_update(sb); sb->s_root = root_dentry; - printk(KERN_INFO "hypfs: Hypervisor filesystem mounted\n"); + pr_info("Hypervisor filesystem mounted\n"); return 0; err_tree: @@ -513,7 +515,7 @@ fail_sysfs: if (!MACHINE_IS_VM) hypfs_diag_exit(); fail_diag: - printk(KERN_ERR "hypfs: Initialization failed with rc = %i.\n", rc); + pr_err("Initialization of hypfs failed with rc=%i\n", rc); return rc; } diff --git a/arch/s390/include/asm/auxvec.h b/arch/s390/include/asm/auxvec.h index 0d340720fd99..a1f153e89133 100644 --- a/arch/s390/include/asm/auxvec.h +++ b/arch/s390/include/asm/auxvec.h @@ -1,4 +1,6 @@ #ifndef __ASMS390_AUXVEC_H #define __ASMS390_AUXVEC_H +#define AT_SYSINFO_EHDR 33 + #endif diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h index 384e3621e341..7efd0abe8887 100644 --- a/arch/s390/include/asm/bug.h +++ b/arch/s390/include/asm/bug.h @@ -47,7 +47,10 @@ #endif /* CONFIG_DEBUG_BUGVERBOSE */ -#define BUG() __EMIT_BUG(0) +#define BUG() do { \ + __EMIT_BUG(0); \ + for (;;); \ +} while (0) #define WARN_ON(x) ({ \ int __ret_warn_on = !!(x); \ diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h index 261785ab5b22..d480f39d65e6 100644 --- a/arch/s390/include/asm/elf.h +++ b/arch/s390/include/asm/elf.h @@ -120,6 +120,10 @@ typedef s390_compat_regs compat_elf_gregset_t; #include <asm/system.h> /* for save_access_regs */ #include <asm/mmu_context.h> +#include <asm/vdso.h> + +extern unsigned int vdso_enabled; + /* * This is used to ensure we don't load something for the wrong architecture. */ @@ -191,4 +195,16 @@ do { \ current->mm->context.noexec == 0; \ }) +#define ARCH_DLINFO \ +do { \ + if (vdso_enabled) \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, \ + (unsigned long)current->mm->context.vdso_base); \ +} while (0) + +struct linux_binprm; + +#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 +int arch_setup_additional_pages(struct linux_binprm *, int); + #endif diff --git a/arch/s390/include/asm/fcx.h b/arch/s390/include/asm/fcx.h index 8be1f3a58042..ef6170995076 100644 --- a/arch/s390/include/asm/fcx.h +++ b/arch/s390/include/asm/fcx.h @@ -248,8 +248,8 @@ struct dcw { #define TCCB_MAX_SIZE (sizeof(struct tccb_tcah) + \ TCCB_MAX_DCW * sizeof(struct dcw) + \ sizeof(struct tccb_tcat)) -#define TCCB_SAC_DEFAULT 0xf901 -#define TCCB_SAC_INTRG 0xf902 +#define TCCB_SAC_DEFAULT 0x1ffe +#define TCCB_SAC_INTRG 0x1fff /** * struct tccb_tcah - Transport-Command-Area Header (TCAH) diff --git a/arch/s390/include/asm/ftrace.h b/arch/s390/include/asm/ftrace.h new file mode 100644 index 000000000000..5a5bc75e19d4 --- /dev/null +++ b/arch/s390/include/asm/ftrace.h @@ -0,0 +1,8 @@ +#ifndef _ASM_S390_FTRACE_H +#define _ASM_S390_FTRACE_H + +#ifndef __ASSEMBLY__ +extern void _mcount(void); +#endif + +#endif /* _ASM_S390_FTRACE_H */ diff --git a/arch/s390/include/asm/isc.h b/arch/s390/include/asm/isc.h index 34bb8916db4f..1420a1115948 100644 --- a/arch/s390/include/asm/isc.h +++ b/arch/s390/include/asm/isc.h @@ -17,6 +17,7 @@ #define CHSC_SCH_ISC 7 /* CHSC subchannels */ /* Adapter interrupts. */ #define QDIO_AIRQ_ISC IO_SCH_ISC /* I/O subchannel in qdio mode */ +#define AP_ISC 6 /* adjunct processor (crypto) devices */ /* Functions for registration of I/O interruption subclasses */ void isc_register(unsigned int isc); diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h index d2b4ff831477..3b59216e6284 100644 --- a/arch/s390/include/asm/mmu.h +++ b/arch/s390/include/asm/mmu.h @@ -6,6 +6,7 @@ typedef struct { struct list_head pgtable_list; unsigned long asce_bits; unsigned long asce_limit; + unsigned long vdso_base; int noexec; int has_pgste; /* The mmu context has extended page tables */ int alloc_pgste; /* cloned contexts will have extended page tables */ diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h index 991ba939408c..32e8f6aa4384 100644 --- a/arch/s390/include/asm/page.h +++ b/arch/s390/include/asm/page.h @@ -152,4 +152,6 @@ void arch_alloc_page(struct page *page, int order); #include <asm-generic/memory_model.h> #include <asm-generic/page.h> +#define __HAVE_ARCH_GATE_AREA 1 + #endif /* _S390_PAGE_H */ diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 4af80af2a88f..066b99502e09 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -13,6 +13,7 @@ #ifndef __ASM_S390_PROCESSOR_H #define __ASM_S390_PROCESSOR_H +#include <linux/linkage.h> #include <asm/ptrace.h> #ifdef __KERNEL__ @@ -258,7 +259,7 @@ static inline void enabled_wait(void) * Function to drop a processor into disabled wait state */ -static inline void disabled_wait(unsigned long code) +static inline void ATTRIB_NORET disabled_wait(unsigned long code) { unsigned long ctl_buf; psw_t dw_psw; @@ -322,6 +323,7 @@ static inline void disabled_wait(unsigned long code) : "=m" (ctl_buf) : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0"); #endif /* __s390x__ */ + while (1); } /* diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h index 4734c3f05354..27fc1746de15 100644 --- a/arch/s390/include/asm/qdio.h +++ b/arch/s390/include/asm/qdio.h @@ -373,16 +373,16 @@ struct qdio_initialize { #define QDIO_FLAG_SYNC_OUTPUT 0x02 #define QDIO_FLAG_PCI_OUT 0x10 -extern int qdio_initialize(struct qdio_initialize *init_data); -extern int qdio_allocate(struct qdio_initialize *init_data); -extern int qdio_establish(struct qdio_initialize *init_data); +extern int qdio_initialize(struct qdio_initialize *); +extern int qdio_allocate(struct qdio_initialize *); +extern int qdio_establish(struct qdio_initialize *); extern int qdio_activate(struct ccw_device *); -extern int do_QDIO(struct ccw_device*, unsigned int flags, - int q_nr, int qidx, int count); -extern int qdio_cleanup(struct ccw_device*, int how); -extern int qdio_shutdown(struct ccw_device*, int how); +extern int do_QDIO(struct ccw_device *cdev, unsigned int callflags, + int q_nr, int bufnr, int count); +extern int qdio_cleanup(struct ccw_device*, int); +extern int qdio_shutdown(struct ccw_device*, int); extern int qdio_free(struct ccw_device *); -extern struct qdio_ssqd_desc *qdio_get_ssqd_desc(struct ccw_device *cdev); +extern int qdio_get_ssqd_desc(struct ccw_device *dev, struct qdio_ssqd_desc*); #endif /* __QDIO_H__ */ diff --git a/arch/s390/include/asm/sigp.h b/arch/s390/include/asm/sigp.h index e16d56f8dfe1..ec403d4304f8 100644 --- a/arch/s390/include/asm/sigp.h +++ b/arch/s390/include/asm/sigp.h @@ -61,6 +61,7 @@ typedef enum { ec_schedule=0, ec_call_function, + ec_call_function_single, ec_bit_last } ec_bit_sig; diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h index ae89cf2478fc..024b91e06239 100644 --- a/arch/s390/include/asm/smp.h +++ b/arch/s390/include/asm/smp.h @@ -91,8 +91,9 @@ extern int __cpu_up (unsigned int cpu); extern struct mutex smp_cpu_state_mutex; extern int smp_cpu_polarization[]; -extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *), - void *info, int wait); +extern void arch_send_call_function_single_ipi(int cpu); +extern void arch_send_call_function_ipi(cpumask_t mask); + #endif #ifndef CONFIG_SMP diff --git a/arch/s390/include/asm/sysinfo.h b/arch/s390/include/asm/sysinfo.h index 79d01343f8b0..ad93212d9e16 100644 --- a/arch/s390/include/asm/sysinfo.h +++ b/arch/s390/include/asm/sysinfo.h @@ -118,4 +118,15 @@ static inline int stsi(void *sysinfo, int fc, int sel1, int sel2) return r0; } +/* + * Service level reporting interface. + */ +struct service_level { + struct list_head list; + void (*seq_print)(struct seq_file *, struct service_level *); +}; + +int register_service_level(struct service_level *); +int unregister_service_level(struct service_level *); + #endif /* __ASM_S390_SYSINFO_H */ diff --git a/arch/s390/include/asm/system.h b/arch/s390/include/asm/system.h index 819e7d99ca0c..c17a3cfbe242 100644 --- a/arch/s390/include/asm/system.h +++ b/arch/s390/include/asm/system.h @@ -12,6 +12,7 @@ #define __ASM_SYSTEM_H #include <linux/kernel.h> +#include <linux/errno.h> #include <asm/types.h> #include <asm/ptrace.h> #include <asm/setup.h> @@ -413,8 +414,6 @@ __set_psw_mask(unsigned long mask) #define local_mcck_enable() __set_psw_mask(psw_kernel_bits) #define local_mcck_disable() __set_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK) -int stfle(unsigned long long *list, int doublewords); - #ifdef CONFIG_SMP extern void smp_ctl_set_bit(int cr, int bit); @@ -438,6 +437,23 @@ static inline unsigned int stfl(void) return S390_lowcore.stfl_fac_list; } +static inline int __stfle(unsigned long long *list, int doublewords) +{ + typedef struct { unsigned long long _[doublewords]; } addrtype; + register unsigned long __nr asm("0") = doublewords - 1; + + asm volatile(".insn s,0xb2b00000,%0" /* stfle */ + : "=m" (*(addrtype *) list), "+d" (__nr) : : "cc"); + return __nr + 1; +} + +static inline int stfle(unsigned long long *list, int doublewords) +{ + if (!(stfl() & (1UL << 24))) + return -EOPNOTSUPP; + return __stfle(list, doublewords); +} + static inline unsigned short stap(void) { unsigned short cpu_address; diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h new file mode 100644 index 000000000000..a44f4fe16a35 --- /dev/null +++ b/arch/s390/include/asm/vdso.h @@ -0,0 +1,39 @@ +#ifndef __S390_VDSO_H__ +#define __S390_VDSO_H__ + +#ifdef __KERNEL__ + +/* Default link addresses for the vDSOs */ +#define VDSO32_LBASE 0 +#define VDSO64_LBASE 0 + +#define VDSO_VERSION_STRING LINUX_2.6.26 + +#ifndef __ASSEMBLY__ + +/* + * Note about this structure: + * + * NEVER USE THIS IN USERSPACE CODE DIRECTLY. The layout of this + * structure is supposed to be known only to the function in the vdso + * itself and may change without notice. + */ + +struct vdso_data { + __u64 tb_update_count; /* Timebase atomicity ctr 0x00 */ + __u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */ + __u64 xtime_clock_sec; /* Kernel time 0x10 */ + __u64 xtime_clock_nsec; /* 0x18 */ + __u64 wtom_clock_sec; /* Wall to monotonic clock 0x20 */ + __u64 wtom_clock_nsec; /* 0x28 */ + __u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */ + __u32 tz_dsttime; /* Type of dst correction 0x34 */ +}; + +extern struct vdso_data *vdso_data; + +#endif /* __ASSEMBLY__ */ + +#endif /* __KERNEL__ */ + +#endif /* __S390_VDSO_H__ */ diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index 50f657e77344..00c888408864 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -2,6 +2,11 @@ # Makefile for the linux kernel. # +ifdef CONFIG_FUNCTION_TRACER +# Do not trace early boot code +CFLAGS_REMOVE_early.o = -pg +endif + # # Passing null pointers is ok for smp code, since we access the lowcore here. # @@ -12,9 +17,10 @@ CFLAGS_smp.o := -Wno-nonnull # CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' -obj-y := bitmap.o traps.o time.o process.o base.o early.o \ - setup.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \ - s390_ext.o debug.o irq.o ipl.o dis.o diag.o mem_detect.o +obj-y := bitmap.o traps.o time.o process.o base.o early.o setup.o \ + processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \ + s390_ext.o debug.o irq.o ipl.o dis.o diag.o mem_detect.o \ + vdso.o obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o) obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o) @@ -33,9 +39,14 @@ obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o \ obj-$(CONFIG_VIRT_TIMER) += vtime.o obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-$(CONFIG_KPROBES) += kprobes.o +obj-$(CONFIG_FUNCTION_TRACER) += mcount.o # Kexec part S390_KEXEC_OBJS := machine_kexec.o crash.o S390_KEXEC_OBJS += $(if $(CONFIG_64BIT),relocate_kernel64.o,relocate_kernel.o) obj-$(CONFIG_KEXEC) += $(S390_KEXEC_OBJS) +# vdso +obj-$(CONFIG_64BIT) += vdso64/ +obj-$(CONFIG_32BIT) += vdso32/ +obj-$(CONFIG_COMPAT) += vdso32/ diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index 3d144e6020c6..e641f60bac99 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -6,6 +6,7 @@ #include <linux/sched.h> #include <linux/kbuild.h> +#include <asm/vdso.h> int main(void) { @@ -38,5 +39,19 @@ int main(void) DEFINE(__SF_BACKCHAIN, offsetof(struct stack_frame, back_chain)); DEFINE(__SF_GPRS, offsetof(struct stack_frame, gprs)); DEFINE(__SF_EMPTY, offsetof(struct stack_frame, empty1)); + BLANK(); + /* timeval/timezone offsets for use by vdso */ + DEFINE(__VDSO_UPD_COUNT, offsetof(struct vdso_data, tb_update_count)); + DEFINE(__VDSO_XTIME_STAMP, offsetof(struct vdso_data, xtime_tod_stamp)); + DEFINE(__VDSO_XTIME_SEC, offsetof(struct vdso_data, xtime_clock_sec)); + DEFINE(__VDSO_XTIME_NSEC, offsetof(struct vdso_data, xtime_clock_nsec)); + DEFINE(__VDSO_WTOM_SEC, offsetof(struct vdso_data, wtom_clock_sec)); + DEFINE(__VDSO_WTOM_NSEC, offsetof(struct vdso_data, wtom_clock_nsec)); + DEFINE(__VDSO_TIMEZONE, offsetof(struct vdso_data, tz_minuteswest)); + /* constants used by the vdso */ + DEFINE(CLOCK_REALTIME, CLOCK_REALTIME); + DEFINE(CLOCK_MONOTONIC, CLOCK_MONOTONIC); + DEFINE(CLOCK_REALTIME_RES, MONOTONIC_RES_NSEC); + return 0; } diff --git a/arch/s390/kernel/cpcmd.c b/arch/s390/kernel/cpcmd.c index d8c1131e0815..3e8b8816f309 100644 --- a/arch/s390/kernel/cpcmd.c +++ b/arch/s390/kernel/cpcmd.c @@ -7,6 +7,9 @@ * Christian Borntraeger (cborntra@de.ibm.com), */ +#define KMSG_COMPONENT "cpcmd" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> @@ -104,8 +107,8 @@ int cpcmd(const char *cmd, char *response, int rlen, int *response_code) (((unsigned long)response + rlen) >> 31)) { lowbuf = kmalloc(rlen, GFP_KERNEL | GFP_DMA); if (!lowbuf) { - printk(KERN_WARNING - "cpcmd: could not allocate response buffer\n"); + pr_warning("The cpcmd kernel function failed to " + "allocate a response buffer\n"); return -ENOMEM; } spin_lock_irqsave(&cpcmd_lock, flags); diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c index d80fcd4a7fe1..3665b18dedfa 100644 --- a/arch/s390/kernel/debug.c +++ b/arch/s390/kernel/debug.c @@ -10,6 +10,9 @@ * Bugreports to: <Linux390@de.ibm.com> */ +#define KMSG_COMPONENT "s390dbf" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/stddef.h> #include <linux/kernel.h> #include <linux/errno.h> @@ -693,8 +696,8 @@ debug_info_t *debug_register_mode(const char *name, int pages_per_area, /* Since debugfs currently does not support uid/gid other than root, */ /* we do not allow gid/uid != 0 until we get support for that. */ if ((uid != 0) || (gid != 0)) - printk(KERN_WARNING "debug: Warning - Currently only uid/gid " - "= 0 are supported. Using root as owner now!"); + pr_warning("Root becomes the owner of all s390dbf files " + "in sysfs\n"); if (!initialized) BUG(); mutex_lock(&debug_mutex); @@ -709,7 +712,7 @@ debug_info_t *debug_register_mode(const char *name, int pages_per_area, debug_register_view(rc, &debug_pages_view); out: if (!rc){ - printk(KERN_ERR "debug: debug_register failed for %s\n",name); + pr_err("Registering debug feature %s failed\n", name); } mutex_unlock(&debug_mutex); return rc; @@ -763,8 +766,8 @@ debug_set_size(debug_info_t* id, int nr_areas, int pages_per_area) if(pages_per_area > 0){ new_areas = debug_areas_alloc(pages_per_area, nr_areas); if(!new_areas) { - printk(KERN_WARNING "debug: could not allocate memory "\ - "for pagenumber: %i\n",pages_per_area); + pr_info("Allocating memory for %i pages failed\n", + pages_per_area); rc = -ENOMEM; goto out; } @@ -780,8 +783,7 @@ debug_set_size(debug_info_t* id, int nr_areas, int pages_per_area) memset(id->active_entries,0,sizeof(int)*id->nr_areas); memset(id->active_pages, 0, sizeof(int)*id->nr_areas); spin_unlock_irqrestore(&id->lock,flags); - printk(KERN_INFO "debug: %s: set new size (%i pages)\n"\ - ,id->name, pages_per_area); + pr_info("%s: set new size (%i pages)\n" ,id->name, pages_per_area); out: return rc; } @@ -800,10 +802,9 @@ debug_set_level(debug_info_t* id, int new_level) spin_lock_irqsave(&id->lock,flags); if(new_level == DEBUG_OFF_LEVEL){ id->level = DEBUG_OFF_LEVEL; - printk(KERN_INFO "debug: %s: switched off\n",id->name); + pr_info("%s: switched off\n",id->name); } else if ((new_level > DEBUG_MAX_LEVEL) || (new_level < 0)) { - printk(KERN_INFO - "debug: %s: level %i is out of range (%i - %i)\n", + pr_info("%s: level %i is out of range (%i - %i)\n", id->name, new_level, 0, DEBUG_MAX_LEVEL); } else { id->level = new_level; @@ -1108,8 +1109,8 @@ debug_register_view(debug_info_t * id, struct debug_view *view) pde = debugfs_create_file(view->name, mode, id->debugfs_root_entry, id , &debug_file_ops); if (!pde){ - printk(KERN_WARNING "debug: debugfs_create_file() failed!"\ - " Cannot register view %s/%s\n", id->name,view->name); + pr_err("Registering view %s/%s failed due to out of " + "memory\n", id->name,view->name); rc = -1; goto out; } @@ -1119,10 +1120,8 @@ debug_register_view(debug_info_t * id, struct debug_view *view) break; } if (i == DEBUG_MAX_VIEWS) { - printk(KERN_WARNING "debug: cannot register view %s/%s\n", - id->name,view->name); - printk(KERN_WARNING - "debug: maximum number of views reached (%i)!\n", i); + pr_err("Registering view %s/%s would exceed the maximum " + "number of views %i\n", id->name, view->name, i); debugfs_remove(pde); rc = -1; } else { @@ -1303,7 +1302,8 @@ debug_input_level_fn(debug_info_t * id, struct debug_view *view, new_level = debug_get_uint(str); } if(new_level < 0) { - printk(KERN_INFO "debug: level `%s` is not valid\n", str); + pr_warning("%s is not a valid level for a debug " + "feature\n", str); rc = -EINVAL; } else { debug_set_level(id, new_level); @@ -1380,7 +1380,8 @@ debug_input_flush_fn(debug_info_t * id, struct debug_view *view, goto out; } - printk(KERN_INFO "debug: area `%c` is not valid\n", input_buf[0]); + pr_info("Flushing debug data failed because %c is not a valid " + "area\n", input_buf[0]); out: *offset += user_len; diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index 83477c7dc743..ec7e35f6055b 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -461,6 +461,55 @@ start: .byte 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7 .byte 0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff +# +# startup-code at 0x10000, running in absolute addressing mode +# this is called either by the ipl loader or directly by PSW restart +# or linload or SALIPL +# + .org 0x10000 +startup:basr %r13,0 # get base +.LPG0: + +#ifndef CONFIG_MARCH_G5 + # check processor version against MARCH_{G5,Z900,Z990,Z9_109,Z10} + stidp __LC_CPUID # store cpuid + lhi %r0,(3f-2f) / 2 + la %r1,2f-.LPG0(%r13) +0: clc __LC_CPUID+4(2),0(%r1) + jne 3f + lpsw 1f-.LPG0(13) # machine type not good enough, crash + .align 16 +1: .long 0x000a0000,0x00000000 +2: +#if defined(CONFIG_MARCH_Z10) + .short 0x9672, 0x2064, 0x2066, 0x2084, 0x2086, 0x2094, 0x2096 +#elif defined(CONFIG_MARCH_Z9_109) + .short 0x9672, 0x2064, 0x2066, 0x2084, 0x2086 +#elif defined(CONFIG_MARCH_Z990) + .short 0x9672, 0x2064, 0x2066 +#elif defined(CONFIG_MARCH_Z900) + .short 0x9672 +#endif +3: la %r1,2(%r1) + brct %r0,0b +#endif + + l %r13,0f-.LPG0(%r13) + b 0(%r13) +0: .long startup_continue + +# +# params at 10400 (setup.h) +# + .org PARMAREA + .long 0,0 # IPL_DEVICE + .long 0,0 # INITRD_START + .long 0,0 # INITRD_SIZE + + .org COMMAND_LINE + .byte "root=/dev/ram0 ro" + .byte 0 + #ifdef CONFIG_64BIT #include "head64.S" #else diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S index a816e2de32b9..db476d114caa 100644 --- a/arch/s390/kernel/head31.S +++ b/arch/s390/kernel/head31.S @@ -10,34 +10,13 @@ * */ -# -# startup-code at 0x10000, running in absolute addressing mode -# this is called either by the ipl loader or directly by PSW restart -# or linload or SALIPL -# - .org 0x10000 -startup:basr %r13,0 # get base -.LPG0: l %r13,0f-.LPG0(%r13) - b 0(%r13) -0: .long startup_continue - -# -# params at 10400 (setup.h) -# - .org PARMAREA - .long 0,0 # IPL_DEVICE - .long 0,0 # INITRD_START - .long 0,0 # INITRD_SIZE - - .org COMMAND_LINE - .byte "root=/dev/ram0 ro" - .byte 0 - .org 0x11000 startup_continue: basr %r13,0 # get base -.LPG1: mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0) +.LPG1: + + mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0) lctl %c0,%c15,.Lctl-.LPG1(%r13) # load control registers l %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area # move IPL device to lowcore @@ -50,7 +29,6 @@ startup_continue: ahi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union+THREAD_SIZE st %r15,__LC_KERNEL_STACK # set end of kernel stack ahi %r15,-96 - xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain # # Save ipl parameters, clear bss memory, initialize storage key for kernel pages, # and create a kernel NSS if the SAVESYS= parm is defined diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index 1d06961e87b3..3ccd36b24b8f 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -10,29 +10,6 @@ * */ -# -# startup-code at 0x10000, running in absolute addressing mode -# this is called either by the ipl loader or directly by PSW restart -# or linload or SALIPL -# - .org 0x10000 -startup:basr %r13,0 # get base -.LPG0: l %r13,0f-.LPG0(%r13) - b 0(%r13) -0: .long startup_continue - -# -# params at 10400 (setup.h) -# - .org PARMAREA - .quad 0 # IPL_DEVICE - .quad 0 # INITRD_START - .quad 0 # INITRD_SIZE - - .org COMMAND_LINE - .byte "root=/dev/ram0 ro" - .byte 0 - .org 0x11000 startup_continue: @@ -119,7 +96,6 @@ startup_continue: aghi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union + THREAD_SIZE stg %r15,__LC_KERNEL_STACK # set end of kernel stack aghi %r15,-160 - xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) # clear backchain # # Save ipl parameters, clear bss memory, initialize storage key for kernel pages, # and create a kernel NSS if the SAVESYS= parm is defined diff --git a/arch/s390/kernel/mcount.S b/arch/s390/kernel/mcount.S new file mode 100644 index 000000000000..397d131a345f --- /dev/null +++ b/arch/s390/kernel/mcount.S @@ -0,0 +1,56 @@ +/* + * Copyright IBM Corp. 2008 + * + * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>, + * + */ + +#ifndef CONFIG_64BIT +.globl _mcount +_mcount: + stm %r0,%r5,8(%r15) + st %r14,56(%r15) + lr %r1,%r15 + ahi %r15,-96 + l %r3,100(%r15) + la %r2,0(%r14) + st %r1,0(%r15) + la %r3,0(%r3) + bras %r14,0f + .long ftrace_trace_function +0: l %r14,0(%r14) + l %r14,0(%r14) + basr %r14,%r14 + ahi %r15,96 + lm %r0,%r5,8(%r15) + l %r14,56(%r15) + br %r14 + +.globl ftrace_stub +ftrace_stub: + br %r14 + +#else /* CONFIG_64BIT */ + +.globl _mcount +_mcount: + stmg %r0,%r5,16(%r15) + stg %r14,112(%r15) + lgr %r1,%r15 + aghi %r15,-160 + stg %r1,0(%r15) + lgr %r2,%r14 + lg %r3,168(%r15) + larl %r14,ftrace_trace_function + lg %r14,0(%r14) + basr %r14,%r14 + aghi %r15,160 + lmg %r0,%r5,16(%r15) + lg %r14,112(%r15) + br %r14 + +.globl ftrace_stub +ftrace_stub: + br %r14 + +#endif /* CONFIG_64BIT */ diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c new file mode 100644 index 000000000000..82c1872cfe80 --- /dev/null +++ b/arch/s390/kernel/processor.c @@ -0,0 +1,98 @@ +/* + * arch/s390/kernel/processor.c + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + */ + +#define KMSG_COMPONENT "cpu" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/smp.h> +#include <linux/seq_file.h> +#include <linux/delay.h> + +#include <asm/elf.h> +#include <asm/lowcore.h> +#include <asm/param.h> + +void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo) +{ + pr_info("Processor %d started, address %d, identification %06X\n", + cpuinfo->cpu_nr, cpuinfo->cpu_addr, cpuinfo->cpu_id.ident); +} + +/* + * show_cpuinfo - Get information on one CPU for use by procfs. + */ + +static int show_cpuinfo(struct seq_file *m, void *v) +{ + static const char *hwcap_str[8] = { + "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp", + "edat" + }; + struct cpuinfo_S390 *cpuinfo; + unsigned long n = (unsigned long) v - 1; + int i; + + s390_adjust_jiffies(); + preempt_disable(); + if (!n) { + seq_printf(m, "vendor_id : IBM/S390\n" + "# processors : %i\n" + "bogomips per cpu: %lu.%02lu\n", + num_online_cpus(), loops_per_jiffy/(500000/HZ), + (loops_per_jiffy/(5000/HZ))%100); + seq_puts(m, "features\t: "); + for (i = 0; i < 8; i++) + if (hwcap_str[i] && (elf_hwcap & (1UL << i))) + seq_printf(m, "%s ", hwcap_str[i]); + seq_puts(m, "\n"); + } + + if (cpu_online(n)) { +#ifdef CONFIG_SMP + if (smp_processor_id() == n) + cpuinfo = &S390_lowcore.cpu_data; + else + cpuinfo = &lowcore_ptr[n]->cpu_data; +#else + cpuinfo = &S390_lowcore.cpu_data; +#endif + seq_printf(m, "processor %li: " + "version = %02X, " + "identification = %06X, " + "machine = %04X\n", + n, cpuinfo->cpu_id.version, + cpuinfo->cpu_id.ident, + cpuinfo->cpu_id.machine); + } + preempt_enable(); + return 0; +} + +static void *c_start(struct seq_file *m, loff_t *pos) +{ + return *pos < NR_CPUS ? (void *)((unsigned long) *pos + 1) : NULL; +} + +static void *c_next(struct seq_file *m, void *v, loff_t *pos) +{ + ++*pos; + return c_start(m, pos); +} + +static void c_stop(struct seq_file *m, void *v) +{ +} + +const struct seq_operations cpuinfo_op = { + .start = c_start, + .next = c_next, + .stop = c_stop, + .show = show_cpuinfo, +}; + diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 38ff2bce1203..75c496f4f16d 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -204,7 +204,6 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr) static int peek_user(struct task_struct *child, addr_t addr, addr_t data) { - struct user *dummy = NULL; addr_t tmp, mask; /* @@ -213,8 +212,8 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data) */ mask = __ADDR_MASK; #ifdef CONFIG_64BIT - if (addr >= (addr_t) &dummy->regs.acrs && - addr < (addr_t) &dummy->regs.orig_gpr2) + if (addr >= (addr_t) &((struct user *) NULL)->regs.acrs && + addr < (addr_t) &((struct user *) NULL)->regs.orig_gpr2) mask = 3; #endif if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK) @@ -312,7 +311,6 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data) static int poke_user(struct task_struct *child, addr_t addr, addr_t data) { - struct user *dummy = NULL; addr_t mask; /* @@ -321,8 +319,8 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data) */ mask = __ADDR_MASK; #ifdef CONFIG_64BIT - if (addr >= (addr_t) &dummy->regs.acrs && - addr < (addr_t) &dummy->regs.orig_gpr2) + if (addr >= (addr_t) &((struct user *) NULL)->regs.acrs && + addr < (addr_t) &((struct user *) NULL)->regs.orig_gpr2) mask = 3; #endif if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK) diff --git a/arch/s390/kernel/s390_ksyms.c b/arch/s390/kernel/s390_ksyms.c index 48238a114ce9..46b90cb03707 100644 --- a/arch/s390/kernel/s390_ksyms.c +++ b/arch/s390/kernel/s390_ksyms.c @@ -14,6 +14,7 @@ #include <asm/delay.h> #include <asm/pgalloc.h> #include <asm/setup.h> +#include <asm/ftrace.h> #ifdef CONFIG_IP_MULTICAST #include <net/arp.h> #endif @@ -43,3 +44,7 @@ EXPORT_SYMBOL(csum_fold); EXPORT_SYMBOL(console_mode); EXPORT_SYMBOL(console_devno); EXPORT_SYMBOL(console_irq); + +#ifdef CONFIG_FUNCTION_TRACER +EXPORT_SYMBOL(_mcount); +#endif diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 400b040df7fa..40d8c011cfea 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -14,6 +14,9 @@ * This file handles the architecture-dependent parts of initialization */ +#define KMSG_COMPONENT "setup" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/errno.h> #include <linux/module.h> #include <linux/sched.h> @@ -32,7 +35,6 @@ #include <linux/bootmem.h> #include <linux/root_dev.h> #include <linux/console.h> -#include <linux/seq_file.h> #include <linux/kernel_stat.h> #include <linux/device.h> #include <linux/notifier.h> @@ -291,8 +293,8 @@ unsigned int switch_amode = 0; #endif EXPORT_SYMBOL_GPL(switch_amode); -static void set_amode_and_uaccess(unsigned long user_amode, - unsigned long user32_amode) +static int set_amode_and_uaccess(unsigned long user_amode, + unsigned long user32_amode) { psw_user_bits = PSW_BASE_BITS | PSW_MASK_DAT | user_amode | PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK | @@ -309,11 +311,11 @@ static void set_amode_and_uaccess(unsigned long user_amode, PSW_MASK_MCHECK | PSW_DEFAULT_KEY; if (MACHINE_HAS_MVCOS) { - printk("mvcos available.\n"); memcpy(&uaccess, &uaccess_mvcos_switch, sizeof(uaccess)); + return 1; } else { - printk("mvcos not available.\n"); memcpy(&uaccess, &uaccess_pt, sizeof(uaccess)); + return 0; } } @@ -328,9 +330,10 @@ static int __init early_parse_switch_amode(char *p) early_param("switch_amode", early_parse_switch_amode); #else /* CONFIG_S390_SWITCH_AMODE */ -static inline void set_amode_and_uaccess(unsigned long user_amode, - unsigned long user32_amode) +static inline int set_amode_and_uaccess(unsigned long user_amode, + unsigned long user32_amode) { + return 0; } #endif /* CONFIG_S390_SWITCH_AMODE */ @@ -355,11 +358,20 @@ early_param("noexec", early_parse_noexec); static void setup_addressing_mode(void) { if (s390_noexec) { - printk("S390 execute protection active, "); - set_amode_and_uaccess(PSW_ASC_SECONDARY, PSW32_ASC_SECONDARY); + if (set_amode_and_uaccess(PSW_ASC_SECONDARY, + PSW32_ASC_SECONDARY)) + pr_info("Execute protection active, " + "mvcos available\n"); + else + pr_info("Execute protection active, " + "mvcos not available\n"); } else if (switch_amode) { - printk("S390 address spaces switched, "); - set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY); + if (set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY)) + pr_info("Address spaces switched, " + "mvcos available\n"); + else + pr_info("Address spaces switched, " + "mvcos not available\n"); } #ifdef CONFIG_TRACE_IRQFLAGS sysc_restore_trace_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK; @@ -572,15 +584,15 @@ setup_memory(void) start = PFN_PHYS(start_pfn) + bmap_size + PAGE_SIZE; if (start + INITRD_SIZE > memory_end) { - printk("initrd extends beyond end of memory " - "(0x%08lx > 0x%08lx)\n" + pr_err("initrd extends beyond end of " + "memory (0x%08lx > 0x%08lx) " "disabling initrd\n", start + INITRD_SIZE, memory_end); INITRD_START = INITRD_SIZE = 0; } else { - printk("Moving initrd (0x%08lx -> 0x%08lx, " - "size: %ld)\n", - INITRD_START, start, INITRD_SIZE); + pr_info("Moving initrd (0x%08lx -> " + "0x%08lx, size: %ld)\n", + INITRD_START, start, INITRD_SIZE); memmove((void *) start, (void *) INITRD_START, INITRD_SIZE); INITRD_START = start; @@ -642,8 +654,9 @@ setup_memory(void) initrd_start = INITRD_START; initrd_end = initrd_start + INITRD_SIZE; } else { - printk("initrd extends beyond end of memory " - "(0x%08lx > 0x%08lx)\ndisabling initrd\n", + pr_err("initrd extends beyond end of " + "memory (0x%08lx > 0x%08lx) " + "disabling initrd\n", initrd_start + INITRD_SIZE, memory_end); initrd_start = initrd_end = 0; } @@ -651,23 +664,6 @@ setup_memory(void) #endif } -static int __init __stfle(unsigned long long *list, int doublewords) -{ - typedef struct { unsigned long long _[doublewords]; } addrtype; - register unsigned long __nr asm("0") = doublewords - 1; - - asm volatile(".insn s,0xb2b00000,%0" /* stfle */ - : "=m" (*(addrtype *) list), "+d" (__nr) : : "cc"); - return __nr + 1; -} - -int __init stfle(unsigned long long *list, int doublewords) -{ - if (!(stfl() & (1UL << 24))) - return -EOPNOTSUPP; - return __stfle(list, doublewords); -} - /* * Setup hardware capabilities. */ @@ -739,8 +735,13 @@ static void __init setup_hwcaps(void) strcpy(elf_platform, "z990"); break; case 0x2094: + case 0x2096: strcpy(elf_platform, "z9-109"); break; + case 0x2097: + case 0x2098: + strcpy(elf_platform, "z10"); + break; } } @@ -756,21 +757,27 @@ setup_arch(char **cmdline_p) * print what head.S has found out about the machine */ #ifndef CONFIG_64BIT - printk((MACHINE_IS_VM) ? - "We are running under VM (31 bit mode)\n" : - "We are running native (31 bit mode)\n"); - printk((MACHINE_HAS_IEEE) ? - "This machine has an IEEE fpu\n" : - "This machine has no IEEE fpu\n"); + if (MACHINE_IS_VM) + pr_info("Linux is running as a z/VM " + "guest operating system in 31-bit mode\n"); + else + pr_info("Linux is running natively in 31-bit mode\n"); + if (MACHINE_HAS_IEEE) + pr_info("The hardware system has IEEE compatible " + "floating point units\n"); + else + pr_info("The hardware system has no IEEE compatible " + "floating point units\n"); #else /* CONFIG_64BIT */ if (MACHINE_IS_VM) - printk("We are running under VM (64 bit mode)\n"); + pr_info("Linux is running as a z/VM " + "guest operating system in 64-bit mode\n"); else if (MACHINE_IS_KVM) { - printk("We are running under KVM (64 bit mode)\n"); + pr_info("Linux is running under KVM in 64-bit mode\n"); add_preferred_console("hvc", 0, NULL); s390_virtio_console_init(); } else - printk("We are running native (64 bit mode)\n"); + pr_info("Linux is running natively in 64-bit mode\n"); #endif /* CONFIG_64BIT */ /* Have one command line that is parsed and saved in /proc/cmdline */ @@ -818,90 +825,3 @@ setup_arch(char **cmdline_p) /* Setup zfcpdump support */ setup_zfcpdump(console_devno); } - -void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo) -{ - printk(KERN_INFO "cpu %d " -#ifdef CONFIG_SMP - "phys_idx=%d " -#endif - "vers=%02X ident=%06X machine=%04X unused=%04X\n", - cpuinfo->cpu_nr, -#ifdef CONFIG_SMP - cpuinfo->cpu_addr, -#endif - cpuinfo->cpu_id.version, - cpuinfo->cpu_id.ident, - cpuinfo->cpu_id.machine, - cpuinfo->cpu_id.unused); -} - -/* - * show_cpuinfo - Get information on one CPU for use by procfs. - */ - -static int show_cpuinfo(struct seq_file *m, void *v) -{ - static const char *hwcap_str[8] = { - "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp", - "edat" - }; - struct cpuinfo_S390 *cpuinfo; - unsigned long n = (unsigned long) v - 1; - int i; - - s390_adjust_jiffies(); - preempt_disable(); - if (!n) { - seq_printf(m, "vendor_id : IBM/S390\n" - "# processors : %i\n" - "bogomips per cpu: %lu.%02lu\n", - num_online_cpus(), loops_per_jiffy/(500000/HZ), - (loops_per_jiffy/(5000/HZ))%100); - seq_puts(m, "features\t: "); - for (i = 0; i < 8; i++) - if (hwcap_str[i] && (elf_hwcap & (1UL << i))) - seq_printf(m, "%s ", hwcap_str[i]); - seq_puts(m, "\n"); - } - - if (cpu_online(n)) { -#ifdef CONFIG_SMP - if (smp_processor_id() == n) - cpuinfo = &S390_lowcore.cpu_data; - else - cpuinfo = &lowcore_ptr[n]->cpu_data; -#else - cpuinfo = &S390_lowcore.cpu_data; -#endif - seq_printf(m, "processor %li: " - "version = %02X, " - "identification = %06X, " - "machine = %04X\n", - n, cpuinfo->cpu_id.version, - cpuinfo->cpu_id.ident, - cpuinfo->cpu_id.machine); - } - preempt_enable(); - return 0; -} - -static void *c_start(struct seq_file *m, loff_t *pos) -{ - return *pos < NR_CPUS ? (void *)((unsigned long) *pos + 1) : NULL; -} -static void *c_next(struct seq_file *m, void *v, loff_t *pos) -{ - ++*pos; - return c_start(m, pos); -} -static void c_stop(struct seq_file *m, void *v) -{ -} -const struct seq_operations cpuinfo_op = { - .start = c_start, - .next = c_next, - .stop = c_stop, - .show = show_cpuinfo, -}; - diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index b5595688a477..19ee3d19da69 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -20,6 +20,9 @@ * cpu_number_map in other architectures. */ +#define KMSG_COMPONENT "cpu" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/mm.h> @@ -77,159 +80,6 @@ static DEFINE_PER_CPU(struct cpu, cpu_devices); static void smp_ext_bitcall(int, ec_bit_sig); -/* - * Structure and data for __smp_call_function_map(). This is designed to - * minimise static memory requirements. It also looks cleaner. - */ -static DEFINE_SPINLOCK(call_lock); - -struct call_data_struct { - void (*func) (void *info); - void *info; - cpumask_t started; - cpumask_t finished; - int wait; -}; - -static struct call_data_struct *call_data; - -/* - * 'Call function' interrupt callback - */ -static void do_call_function(void) -{ - void (*func) (void *info) = call_data->func; - void *info = call_data->info; - int wait = call_data->wait; - - cpu_set(smp_processor_id(), call_data->started); - (*func)(info); - if (wait) - cpu_set(smp_processor_id(), call_data->finished);; -} - -static void __smp_call_function_map(void (*func) (void *info), void *info, - int wait, cpumask_t map) -{ - struct call_data_struct data; - int cpu, local = 0; - - /* - * Can deadlock when interrupts are disabled or if in wrong context. - */ - WARN_ON(irqs_disabled() || in_irq()); - - /* - * Check for local function call. We have to have the same call order - * as in on_each_cpu() because of machine_restart_smp(). - */ - if (cpu_isset(smp_processor_id(), map)) { - local = 1; - cpu_clear(smp_processor_id(), map); - } - - cpus_and(map, map, cpu_online_map); - if (cpus_empty(map)) - goto out; - - data.func = func; - data.info = info; - data.started = CPU_MASK_NONE; - data.wait = wait; - if (wait) - data.finished = CPU_MASK_NONE; - - call_data = &data; - - for_each_cpu_mask(cpu, map) - smp_ext_bitcall(cpu, ec_call_function); - - /* Wait for response */ - while (!cpus_equal(map, data.started)) - cpu_relax(); - if (wait) - while (!cpus_equal(map, data.finished)) - cpu_relax(); -out: - if (local) { - local_irq_disable(); - func(info); - local_irq_enable(); - } -} - -/* - * smp_call_function: - * @func: the function to run; this must be fast and non-blocking - * @info: an arbitrary pointer to pass to the function - * @wait: if true, wait (atomically) until function has completed on other CPUs - * - * Run a function on all other CPUs. - * - * You must not call this function with disabled interrupts, from a - * hardware interrupt handler or from a bottom half. - */ -int smp_call_function(void (*func) (void *info), void *info, int wait) -{ - cpumask_t map; - - spin_lock(&call_lock); - map = cpu_online_map; - cpu_clear(smp_processor_id(), map); - __smp_call_function_map(func, info, wait, map); - spin_unlock(&call_lock); - return 0; -} -EXPORT_SYMBOL(smp_call_function); - -/* - * smp_call_function_single: - * @cpu: the CPU where func should run - * @func: the function to run; this must be fast and non-blocking - * @info: an arbitrary pointer to pass to the function - * @wait: if true, wait (atomically) until function has completed on other CPUs - * - * Run a function on one processor. - * - * You must not call this function with disabled interrupts, from a - * hardware interrupt handler or from a bottom half. - */ -int smp_call_function_single(int cpu, void (*func) (void *info), void *info, - int wait) -{ - spin_lock(&call_lock); - __smp_call_function_map(func, info, wait, cpumask_of_cpu(cpu)); - spin_unlock(&call_lock); - return 0; -} -EXPORT_SYMBOL(smp_call_function_single); - -/** - * smp_call_function_mask(): Run a function on a set of other CPUs. - * @mask: The set of cpus to run on. Must not include the current cpu. - * @func: The function to run. This must be fast and non-blocking. - * @info: An arbitrary pointer to pass to the function. - * @wait: If true, wait (atomically) until function has completed on other CPUs. - * - * Returns 0 on success, else a negative status code. - * - * If @wait is true, then returns once @func has returned; otherwise - * it returns just before the target cpu calls @func. - * - * You must not call this function with disabled interrupts or from a - * hardware interrupt handler or from a bottom half handler. - */ -int smp_call_function_mask(cpumask_t mask, void (*func)(void *), void *info, - int wait) -{ - spin_lock(&call_lock); - cpu_clear(smp_processor_id(), mask); - __smp_call_function_map(func, info, wait, mask); - spin_unlock(&call_lock); - return 0; -} -EXPORT_SYMBOL(smp_call_function_mask); - void smp_send_stop(void) { int cpu, rc; @@ -271,7 +121,10 @@ static void do_ext_call_interrupt(__u16 code) bits = xchg(&S390_lowcore.ext_call_fast, 0); if (test_bit(ec_call_function, &bits)) - do_call_function(); + generic_smp_call_function_interrupt(); + + if (test_bit(ec_call_function_single, &bits)) + generic_smp_call_function_single_interrupt(); } /* @@ -288,6 +141,19 @@ static void smp_ext_bitcall(int cpu, ec_bit_sig sig) udelay(10); } +void arch_send_call_function_ipi(cpumask_t mask) +{ + int cpu; + + for_each_cpu_mask(cpu, mask) + smp_ext_bitcall(cpu, ec_call_function); +} + +void arch_send_call_function_single_ipi(int cpu) +{ + smp_ext_bitcall(cpu, ec_call_function_single); +} + #ifndef CONFIG_64BIT /* * this function sends a 'purge tlb' signal to another CPU. @@ -388,8 +254,8 @@ static void __init smp_get_save_area(unsigned int cpu, unsigned int phy_cpu) if (ipl_info.type != IPL_TYPE_FCP_DUMP) return; if (cpu >= NR_CPUS) { - printk(KERN_WARNING "Registers for cpu %i not saved since dump " - "kernel was compiled with NR_CPUS=%i\n", cpu, NR_CPUS); + pr_warning("CPU %i exceeds the maximum %i and is excluded from " + "the dump\n", cpu, NR_CPUS - 1); return; } zfcpdump_save_areas[cpu] = kmalloc(sizeof(union save_area), GFP_KERNEL); @@ -562,7 +428,7 @@ static void __init smp_detect_cpus(void) } out: kfree(info); - printk(KERN_INFO "CPUs: %d configured, %d standby\n", c_cpus, s_cpus); + pr_info("%d configured CPUs, %d standby CPUs\n", c_cpus, s_cpus); get_online_cpus(); __smp_rescan_cpus(); put_online_cpus(); @@ -588,9 +454,9 @@ int __cpuinit start_secondary(void *cpuvoid) /* call cpu notifiers */ notify_cpu_starting(smp_processor_id()); /* Mark this cpu as online */ - spin_lock(&call_lock); + ipi_call_lock(); cpu_set(smp_processor_id(), cpu_online_map); - spin_unlock(&call_lock); + ipi_call_unlock(); /* Switch on interrupts */ local_irq_enable(); /* Print info about this processor */ @@ -690,12 +556,8 @@ int __cpuinit __cpu_up(unsigned int cpu) ccode = signal_processor_p((__u32)(unsigned long)(lowcore_ptr[cpu]), cpu, sigp_set_prefix); - if (ccode) { - printk("sigp_set_prefix failed for cpu %d " - "with condition code %d\n", - (int) cpu, (int) ccode); + if (ccode) return -EIO; - } idle = current_set[cpu]; cpu_lowcore = lowcore_ptr[cpu]; @@ -778,7 +640,7 @@ void __cpu_die(unsigned int cpu) while (!smp_cpu_not_running(cpu)) cpu_relax(); smp_free_lowcore(cpu); - printk(KERN_INFO "Processor %d spun down\n", cpu); + pr_info("Processor %d stopped\n", cpu); } void cpu_die(void) diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index eccefbbff887..cda77776264c 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -12,6 +12,9 @@ * Copyright (C) 1991, 1992, 1995 Linus Torvalds */ +#define KMSG_COMPONENT "time" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/errno.h> #include <linux/module.h> #include <linux/sched.h> @@ -20,6 +23,8 @@ #include <linux/string.h> #include <linux/mm.h> #include <linux/interrupt.h> +#include <linux/cpu.h> +#include <linux/stop_machine.h> #include <linux/time.h> #include <linux/sysdev.h> #include <linux/delay.h> @@ -36,6 +41,7 @@ #include <asm/delay.h> #include <asm/s390_ext.h> #include <asm/div64.h> +#include <asm/vdso.h> #include <asm/irq.h> #include <asm/irq_regs.h> #include <asm/timer.h> @@ -223,6 +229,36 @@ static struct clocksource clocksource_tod = { }; +void update_vsyscall(struct timespec *wall_time, struct clocksource *clock) +{ + if (clock != &clocksource_tod) + return; + + /* Make userspace gettimeofday spin until we're done. */ + ++vdso_data->tb_update_count; + smp_wmb(); + vdso_data->xtime_tod_stamp = clock->cycle_last; + vdso_data->xtime_clock_sec = xtime.tv_sec; + vdso_data->xtime_clock_nsec = xtime.tv_nsec; + vdso_data->wtom_clock_sec = wall_to_monotonic.tv_sec; + vdso_data->wtom_clock_nsec = wall_to_monotonic.tv_nsec; + smp_wmb(); + ++vdso_data->tb_update_count; +} + +extern struct timezone sys_tz; + +void update_vsyscall_tz(void) +{ + /* Make userspace gettimeofday spin until we're done. */ + ++vdso_data->tb_update_count; + smp_wmb(); + vdso_data->tz_minuteswest = sys_tz.tz_minuteswest; + vdso_data->tz_dsttime = sys_tz.tz_dsttime; + smp_wmb(); + ++vdso_data->tb_update_count; +} + /* * Initialize the TOD clock and the CPU timer of * the boot cpu. @@ -288,8 +324,8 @@ static unsigned long long adjust_time(unsigned long long old, } sched_clock_base_cc += delta; if (adjust.offset != 0) { - printk(KERN_NOTICE "etr: time adjusted by %li micro-seconds\n", - adjust.offset); + pr_notice("The ETR interface has adjusted the clock " + "by %li microseconds\n", adjust.offset); adjust.modes = ADJ_OFFSET_SINGLESHOT; do_adjtimex(&adjust); } @@ -360,6 +396,15 @@ static void enable_sync_clock(void) atomic_set_mask(0x80000000, sw_ptr); } +/* Single threaded workqueue used for etr and stp sync events */ +static struct workqueue_struct *time_sync_wq; + +static void __init time_init_wq(void) +{ + if (!time_sync_wq) + time_sync_wq = create_singlethread_workqueue("timesync"); +} + /* * External Time Reference (ETR) code. */ @@ -425,6 +470,7 @@ static struct timer_list etr_timer; static void etr_timeout(unsigned long dummy); static void etr_work_fn(struct work_struct *work); +static DEFINE_MUTEX(etr_work_mutex); static DECLARE_WORK(etr_work, etr_work_fn); /* @@ -440,8 +486,8 @@ static void etr_reset(void) etr_tolec = get_clock(); set_bit(CLOCK_SYNC_HAS_ETR, &clock_sync_flags); } else if (etr_port0_online || etr_port1_online) { - printk(KERN_WARNING "Running on non ETR capable " - "machine, only local mode available.\n"); + pr_warning("The real or virtual hardware system does " + "not provide an ETR interface\n"); etr_port0_online = etr_port1_online = 0; } } @@ -452,17 +498,18 @@ static int __init etr_init(void) if (!test_bit(CLOCK_SYNC_HAS_ETR, &clock_sync_flags)) return 0; + time_init_wq(); /* Check if this machine has the steai instruction. */ if (etr_steai(&aib, ETR_STEAI_STEPPING_PORT) == 0) etr_steai_available = 1; setup_timer(&etr_timer, etr_timeout, 0UL); if (etr_port0_online) { set_bit(ETR_EVENT_PORT0_CHANGE, &etr_events); - schedule_work(&etr_work); + queue_work(time_sync_wq, &etr_work); } if (etr_port1_online) { set_bit(ETR_EVENT_PORT1_CHANGE, &etr_events); - schedule_work(&etr_work); + queue_work(time_sync_wq, &etr_work); } return 0; } @@ -489,7 +536,7 @@ void etr_switch_to_local(void) if (test_bit(CLOCK_SYNC_ETR, &clock_sync_flags)) disable_sync_clock(NULL); set_bit(ETR_EVENT_SWITCH_LOCAL, &etr_events); - schedule_work(&etr_work); + queue_work(time_sync_wq, &etr_work); } /* @@ -505,7 +552,7 @@ void etr_sync_check(void) if (test_bit(CLOCK_SYNC_ETR, &clock_sync_flags)) disable_sync_clock(NULL); set_bit(ETR_EVENT_SYNC_CHECK, &etr_events); - schedule_work(&etr_work); + queue_work(time_sync_wq, &etr_work); } /* @@ -529,13 +576,13 @@ static void etr_timing_alert(struct etr_irq_parm *intparm) * Both ports are not up-to-date now. */ set_bit(ETR_EVENT_PORT_ALERT, &etr_events); - schedule_work(&etr_work); + queue_work(time_sync_wq, &etr_work); } static void etr_timeout(unsigned long dummy) { set_bit(ETR_EVENT_UPDATE, &etr_events); - schedule_work(&etr_work); + queue_work(time_sync_wq, &etr_work); } /* @@ -642,14 +689,16 @@ static int etr_aib_follows(struct etr_aib *a1, struct etr_aib *a2, int p) } struct clock_sync_data { + atomic_t cpus; int in_sync; unsigned long long fixup_cc; + int etr_port; + struct etr_aib *etr_aib; }; -static void clock_sync_cpu_start(void *dummy) +static void clock_sync_cpu(struct clock_sync_data *sync) { - struct clock_sync_data *sync = dummy; - + atomic_dec(&sync->cpus); enable_sync_clock(); /* * This looks like a busy wait loop but it isn't. etr_sync_cpus @@ -675,39 +724,35 @@ static void clock_sync_cpu_start(void *dummy) fixup_clock_comparator(sync->fixup_cc); } -static void clock_sync_cpu_end(void *dummy) -{ -} - /* * Sync the TOD clock using the port refered to by aibp. This port * has to be enabled and the other port has to be disabled. The * last eacr update has to be more than 1.6 seconds in the past. */ -static int etr_sync_clock(struct etr_aib *aib, int port) +static int etr_sync_clock(void *data) { - struct etr_aib *sync_port; - struct clock_sync_data etr_sync; + static int first; unsigned long long clock, old_clock, delay, delta; - int follows; + struct clock_sync_data *etr_sync; + struct etr_aib *sync_port, *aib; + int port; int rc; - /* Check if the current aib is adjacent to the sync port aib. */ - sync_port = (port == 0) ? &etr_port0 : &etr_port1; - follows = etr_aib_follows(sync_port, aib, port); - memcpy(sync_port, aib, sizeof(*aib)); - if (!follows) - return -EAGAIN; + etr_sync = data; - /* - * Catch all other cpus and make them wait until we have - * successfully synced the clock. smp_call_function will - * return after all other cpus are in etr_sync_cpu_start. - */ - memset(&etr_sync, 0, sizeof(etr_sync)); - preempt_disable(); - smp_call_function(clock_sync_cpu_start, &etr_sync, 0); - local_irq_disable(); + if (xchg(&first, 1) == 1) { + /* Slave */ + clock_sync_cpu(etr_sync); + return 0; + } + + /* Wait until all other cpus entered the sync function. */ + while (atomic_read(&etr_sync->cpus) != 0) + cpu_relax(); + + port = etr_sync->etr_port; + aib = etr_sync->etr_aib; + sync_port = (port == 0) ? &etr_port0 : &etr_port1; enable_sync_clock(); /* Set clock to next OTE. */ @@ -724,16 +769,16 @@ static int etr_sync_clock(struct etr_aib *aib, int port) delay = (unsigned long long) (aib->edf2.etv - sync_port->edf2.etv) << 32; delta = adjust_time(old_clock, clock, delay); - etr_sync.fixup_cc = delta; + etr_sync->fixup_cc = delta; fixup_clock_comparator(delta); /* Verify that the clock is properly set. */ if (!etr_aib_follows(sync_port, aib, port)) { /* Didn't work. */ disable_sync_clock(NULL); - etr_sync.in_sync = -EAGAIN; + etr_sync->in_sync = -EAGAIN; rc = -EAGAIN; } else { - etr_sync.in_sync = 1; + etr_sync->in_sync = 1; rc = 0; } } else { @@ -741,12 +786,33 @@ static int etr_sync_clock(struct etr_aib *aib, int port) __ctl_clear_bit(0, 29); __ctl_clear_bit(14, 21); disable_sync_clock(NULL); - etr_sync.in_sync = -EAGAIN; + etr_sync->in_sync = -EAGAIN; rc = -EAGAIN; } - local_irq_enable(); - smp_call_function(clock_sync_cpu_end, NULL, 0); - preempt_enable(); + xchg(&first, 0); + return rc; +} + +static int etr_sync_clock_stop(struct etr_aib *aib, int port) +{ + struct clock_sync_data etr_sync; + struct etr_aib *sync_port; + int follows; + int rc; + + /* Check if the current aib is adjacent to the sync port aib. */ + sync_port = (port == 0) ? &etr_port0 : &etr_port1; + follows = etr_aib_follows(sync_port, aib, port); + memcpy(sync_port, aib, sizeof(*aib)); + if (!follows) + return -EAGAIN; + memset(&etr_sync, 0, sizeof(etr_sync)); + etr_sync.etr_aib = aib; + etr_sync.etr_port = port; + get_online_cpus(); + atomic_set(&etr_sync.cpus, num_online_cpus() - 1); + rc = stop_machine(etr_sync_clock, &etr_sync, &cpu_online_map); + put_online_cpus(); return rc; } @@ -903,7 +969,7 @@ static void etr_update_eacr(struct etr_eacr eacr) } /* - * ETR tasklet. In this function you'll find the main logic. In + * ETR work. In this function you'll find the main logic. In * particular this is the only function that calls etr_update_eacr(), * it "controls" the etr control register. */ @@ -914,6 +980,9 @@ static void etr_work_fn(struct work_struct *work) struct etr_aib aib; int sync_port; + /* prevent multiple execution. */ + mutex_lock(&etr_work_mutex); + /* Create working copy of etr_eacr. */ eacr = etr_eacr; @@ -929,7 +998,7 @@ static void etr_work_fn(struct work_struct *work) del_timer_sync(&etr_timer); etr_update_eacr(eacr); clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags); - return; + goto out_unlock; } /* Store aib to get the current ETR status word. */ @@ -1016,7 +1085,7 @@ static void etr_work_fn(struct work_struct *work) eacr.es || sync_port < 0) { etr_update_eacr(eacr); etr_set_tolec_timeout(now); - return; + goto out_unlock; } /* @@ -1036,7 +1105,7 @@ static void etr_work_fn(struct work_struct *work) etr_update_eacr(eacr); set_bit(CLOCK_SYNC_ETR, &clock_sync_flags); if (now < etr_tolec + (1600000 << 12) || - etr_sync_clock(&aib, sync_port) != 0) { + etr_sync_clock_stop(&aib, sync_port) != 0) { /* Sync failed. Try again in 1/2 second. */ eacr.es = 0; etr_update_eacr(eacr); @@ -1044,6 +1113,8 @@ static void etr_work_fn(struct work_struct *work) etr_set_sync_timeout(); } else etr_set_tolec_timeout(now); +out_unlock: + mutex_unlock(&etr_work_mutex); } /* @@ -1125,13 +1196,13 @@ static ssize_t etr_online_store(struct sys_device *dev, return count; /* Nothing to do. */ etr_port0_online = value; set_bit(ETR_EVENT_PORT0_CHANGE, &etr_events); - schedule_work(&etr_work); + queue_work(time_sync_wq, &etr_work); } else { if (etr_port1_online == value) return count; /* Nothing to do. */ etr_port1_online = value; set_bit(ETR_EVENT_PORT1_CHANGE, &etr_events); - schedule_work(&etr_work); + queue_work(time_sync_wq, &etr_work); } return count; } @@ -1332,6 +1403,7 @@ static struct stp_sstpi stp_info; static void *stp_page; static void stp_work_fn(struct work_struct *work); +static DEFINE_MUTEX(stp_work_mutex); static DECLARE_WORK(stp_work, stp_work_fn); static int __init early_parse_stp(char *p) @@ -1356,7 +1428,8 @@ static void __init stp_reset(void) if (rc == 0) set_bit(CLOCK_SYNC_HAS_STP, &clock_sync_flags); else if (stp_online) { - printk(KERN_WARNING "Running on non STP capable machine.\n"); + pr_warning("The real or virtual hardware system does " + "not provide an STP interface\n"); free_bootmem((unsigned long) stp_page, PAGE_SIZE); stp_page = NULL; stp_online = 0; @@ -1365,8 +1438,12 @@ static void __init stp_reset(void) static int __init stp_init(void) { - if (test_bit(CLOCK_SYNC_HAS_STP, &clock_sync_flags) && stp_online) - schedule_work(&stp_work); + if (!test_bit(CLOCK_SYNC_HAS_STP, &clock_sync_flags)) + return 0; + time_init_wq(); + if (!stp_online) + return 0; + queue_work(time_sync_wq, &stp_work); return 0; } @@ -1383,7 +1460,7 @@ arch_initcall(stp_init); static void stp_timing_alert(struct stp_irq_parm *intparm) { if (intparm->tsc || intparm->lac || intparm->tcpc) - schedule_work(&stp_work); + queue_work(time_sync_wq, &stp_work); } /* @@ -1397,7 +1474,7 @@ void stp_sync_check(void) if (!test_bit(CLOCK_SYNC_STP, &clock_sync_flags)) return; disable_sync_clock(NULL); - schedule_work(&stp_work); + queue_work(time_sync_wq, &stp_work); } /* @@ -1411,46 +1488,34 @@ void stp_island_check(void) if (!test_bit(CLOCK_SYNC_STP, &clock_sync_flags)) return; disable_sync_clock(NULL); - schedule_work(&stp_work); + queue_work(time_sync_wq, &stp_work); } -/* - * STP tasklet. Check for the STP state and take over the clock - * synchronization if the STP clock source is usable. - */ -static void stp_work_fn(struct work_struct *work) + +static int stp_sync_clock(void *data) { - struct clock_sync_data stp_sync; + static int first; unsigned long long old_clock, delta; + struct clock_sync_data *stp_sync; int rc; - if (!stp_online) { - chsc_sstpc(stp_page, STP_OP_CTRL, 0x0000); - return; - } + stp_sync = data; - rc = chsc_sstpc(stp_page, STP_OP_CTRL, 0xb0e0); - if (rc) - return; + if (xchg(&first, 1) == 1) { + /* Slave */ + clock_sync_cpu(stp_sync); + return 0; + } - rc = chsc_sstpi(stp_page, &stp_info, sizeof(struct stp_sstpi)); - if (rc || stp_info.c == 0) - return; + /* Wait until all other cpus entered the sync function. */ + while (atomic_read(&stp_sync->cpus) != 0) + cpu_relax(); - /* - * Catch all other cpus and make them wait until we have - * successfully synced the clock. smp_call_function will - * return after all other cpus are in clock_sync_cpu_start. - */ - memset(&stp_sync, 0, sizeof(stp_sync)); - preempt_disable(); - smp_call_function(clock_sync_cpu_start, &stp_sync, 0); - local_irq_disable(); enable_sync_clock(); set_bit(CLOCK_SYNC_STP, &clock_sync_flags); if (test_and_clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags)) - schedule_work(&etr_work); + queue_work(time_sync_wq, &etr_work); rc = 0; if (stp_info.todoff[0] || stp_info.todoff[1] || @@ -1469,16 +1534,49 @@ static void stp_work_fn(struct work_struct *work) } if (rc) { disable_sync_clock(NULL); - stp_sync.in_sync = -EAGAIN; + stp_sync->in_sync = -EAGAIN; clear_bit(CLOCK_SYNC_STP, &clock_sync_flags); if (etr_port0_online || etr_port1_online) - schedule_work(&etr_work); + queue_work(time_sync_wq, &etr_work); } else - stp_sync.in_sync = 1; + stp_sync->in_sync = 1; + xchg(&first, 0); + return 0; +} + +/* + * STP work. Check for the STP state and take over the clock + * synchronization if the STP clock source is usable. + */ +static void stp_work_fn(struct work_struct *work) +{ + struct clock_sync_data stp_sync; + int rc; + + /* prevent multiple execution. */ + mutex_lock(&stp_work_mutex); + + if (!stp_online) { + chsc_sstpc(stp_page, STP_OP_CTRL, 0x0000); + goto out_unlock; + } + + rc = chsc_sstpc(stp_page, STP_OP_CTRL, 0xb0e0); + if (rc) + goto out_unlock; + + rc = chsc_sstpi(stp_page, &stp_info, sizeof(struct stp_sstpi)); + if (rc || stp_info.c == 0) + goto out_unlock; + + memset(&stp_sync, 0, sizeof(stp_sync)); + get_online_cpus(); + atomic_set(&stp_sync.cpus, num_online_cpus() - 1); + stop_machine(stp_sync_clock, &stp_sync, &cpu_online_map); + put_online_cpus(); - local_irq_enable(); - smp_call_function(clock_sync_cpu_end, NULL, 0); - preempt_enable(); +out_unlock: + mutex_unlock(&stp_work_mutex); } /* @@ -1587,7 +1685,7 @@ static ssize_t stp_online_store(struct sysdev_class *class, if (!test_bit(CLOCK_SYNC_HAS_STP, &clock_sync_flags)) return -EOPNOTSUPP; stp_online = value; - schedule_work(&stp_work); + queue_work(time_sync_wq, &stp_work); return count; } diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index a947899dcba1..9369b566b623 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -3,6 +3,9 @@ * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> */ +#define KMSG_COMPONENT "cpu" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/kernel.h> #include <linux/mm.h> #include <linux/init.h> @@ -311,7 +314,7 @@ void __init s390_init_cpu_topology(void) for (i = 0; i < info->mnest - 2; i++) nr_cores *= info->mag[NR_MAG - 3 - i]; - printk(KERN_INFO "CPU topology:"); + pr_info("The CPU configuration topology of the machine is:"); for (i = 0; i < NR_MAG; i++) printk(" %d", info->mag[i]); printk(" / %d\n", info->mnest); diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c new file mode 100644 index 000000000000..f3ba49020211 --- /dev/null +++ b/arch/s390/kernel/vdso.c @@ -0,0 +1,232 @@ +/* + * vdso setup for s390 + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/stddef.h> +#include <linux/unistd.h> +#include <linux/slab.h> +#include <linux/user.h> +#include <linux/elf.h> +#include <linux/security.h> +#include <linux/bootmem.h> + +#include <asm/pgtable.h> +#include <asm/system.h> +#include <asm/processor.h> +#include <asm/mmu.h> +#include <asm/mmu_context.h> +#include <asm/sections.h> +#include <asm/vdso.h> + +/* Max supported size for symbol names */ +#define MAX_SYMNAME 64 + +#if defined(CONFIG_32BIT) || defined(CONFIG_COMPAT) +extern char vdso32_start, vdso32_end; +static void *vdso32_kbase = &vdso32_start; +static unsigned int vdso32_pages; +static struct page **vdso32_pagelist; +#endif + +#ifdef CONFIG_64BIT +extern char vdso64_start, vdso64_end; +static void *vdso64_kbase = &vdso64_start; +static unsigned int vdso64_pages; +static struct page **vdso64_pagelist; +#endif /* CONFIG_64BIT */ + +/* + * Should the kernel map a VDSO page into processes and pass its + * address down to glibc upon exec()? + */ +unsigned int __read_mostly vdso_enabled = 1; + +static int __init vdso_setup(char *s) +{ + vdso_enabled = simple_strtoul(s, NULL, 0); + return 1; +} +__setup("vdso=", vdso_setup); + +/* + * The vdso data page + */ +static union { + struct vdso_data data; + u8 page[PAGE_SIZE]; +} vdso_data_store __attribute__((__section__(".data.page_aligned"))); +struct vdso_data *vdso_data = &vdso_data_store.data; + +/* + * This is called from binfmt_elf, we create the special vma for the + * vDSO and insert it into the mm struct tree + */ +int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) +{ + struct mm_struct *mm = current->mm; + struct page **vdso_pagelist; + unsigned long vdso_pages; + unsigned long vdso_base; + int rc; + + /* + * Only map the vdso for dynamically linked elf binaries. + */ + if (!uses_interp) + return 0; + + vdso_base = mm->mmap_base; +#ifdef CONFIG_64BIT + vdso_pagelist = vdso64_pagelist; + vdso_pages = vdso64_pages; +#ifdef CONFIG_COMPAT + if (test_thread_flag(TIF_31BIT)) { + vdso_pagelist = vdso32_pagelist; + vdso_pages = vdso32_pages; + } +#endif +#else + vdso_pagelist = vdso32_pagelist; + vdso_pages = vdso32_pages; +#endif + + /* + * vDSO has a problem and was disabled, just don't "enable" it for + * the process + */ + if (vdso_pages == 0) + return 0; + + current->mm->context.vdso_base = 0; + + /* + * pick a base address for the vDSO in process space. We try to put + * it at vdso_base which is the "natural" base for it, but we might + * fail and end up putting it elsewhere. + */ + down_write(&mm->mmap_sem); + vdso_base = get_unmapped_area(NULL, vdso_base, + vdso_pages << PAGE_SHIFT, 0, 0); + if (IS_ERR_VALUE(vdso_base)) { + rc = vdso_base; + goto out_up; + } + + /* + * our vma flags don't have VM_WRITE so by default, the process + * isn't allowed to write those pages. + * gdb can break that with ptrace interface, and thus trigger COW + * on those pages but it's then your responsibility to never do that + * on the "data" page of the vDSO or you'll stop getting kernel + * updates and your nice userland gettimeofday will be totally dead. + * It's fine to use that for setting breakpoints in the vDSO code + * pages though + * + * Make sure the vDSO gets into every core dump. + * Dumping its contents makes post-mortem fully interpretable later + * without matching up the same kernel and hardware config to see + * what PC values meant. + */ + rc = install_special_mapping(mm, vdso_base, vdso_pages << PAGE_SHIFT, + VM_READ|VM_EXEC| + VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC| + VM_ALWAYSDUMP, + vdso_pagelist); + if (rc) + goto out_up; + + /* Put vDSO base into mm struct */ + current->mm->context.vdso_base = vdso_base; + + up_write(&mm->mmap_sem); + return 0; + +out_up: + up_write(&mm->mmap_sem); + return rc; +} + +const char *arch_vma_name(struct vm_area_struct *vma) +{ + if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso_base) + return "[vdso]"; + return NULL; +} + +static int __init vdso_init(void) +{ + int i; + +#if defined(CONFIG_32BIT) || defined(CONFIG_COMPAT) + /* Calculate the size of the 32 bit vDSO */ + vdso32_pages = ((&vdso32_end - &vdso32_start + + PAGE_SIZE - 1) >> PAGE_SHIFT) + 1; + + /* Make sure pages are in the correct state */ + vdso32_pagelist = kzalloc(sizeof(struct page *) * (vdso32_pages + 1), + GFP_KERNEL); + BUG_ON(vdso32_pagelist == NULL); + for (i = 0; i < vdso32_pages - 1; i++) { + struct page *pg = virt_to_page(vdso32_kbase + i*PAGE_SIZE); + ClearPageReserved(pg); + get_page(pg); + vdso32_pagelist[i] = pg; + } + vdso32_pagelist[vdso32_pages - 1] = virt_to_page(vdso_data); + vdso32_pagelist[vdso32_pages] = NULL; +#endif + +#ifdef CONFIG_64BIT + /* Calculate the size of the 64 bit vDSO */ + vdso64_pages = ((&vdso64_end - &vdso64_start + + PAGE_SIZE - 1) >> PAGE_SHIFT) + 1; + + /* Make sure pages are in the correct state */ + vdso64_pagelist = kzalloc(sizeof(struct page *) * (vdso64_pages + 1), + GFP_KERNEL); + BUG_ON(vdso64_pagelist == NULL); + for (i = 0; i < vdso64_pages - 1; i++) { + struct page *pg = virt_to_page(vdso64_kbase + i*PAGE_SIZE); + ClearPageReserved(pg); + get_page(pg); + vdso64_pagelist[i] = pg; + } + vdso64_pagelist[vdso64_pages - 1] = virt_to_page(vdso_data); + vdso64_pagelist[vdso64_pages] = NULL; +#endif /* CONFIG_64BIT */ + + get_page(virt_to_page(vdso_data)); + + smp_wmb(); + + return 0; +} +arch_initcall(vdso_init); + +int in_gate_area_no_task(unsigned long addr) +{ + return 0; +} + +int in_gate_area(struct task_struct *task, unsigned long addr) +{ + return 0; +} + +struct vm_area_struct *get_gate_vma(struct task_struct *tsk) +{ + return NULL; +} diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile new file mode 100644 index 000000000000..ca78ad60ba24 --- /dev/null +++ b/arch/s390/kernel/vdso32/Makefile @@ -0,0 +1,55 @@ +# List of files in the vdso, has to be asm only for now + +obj-vdso32 = gettimeofday.o clock_getres.o clock_gettime.o note.o + +# Build rules + +targets := $(obj-vdso32) vdso32.so vdso32.so.dbg +obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) + +KBUILD_AFLAGS_31 := $(filter-out -m64,$(KBUILD_AFLAGS)) +KBUILD_AFLAGS_31 += -m31 -s + +KBUILD_CFLAGS_31 := $(filter-out -m64,$(KBUILD_CFLAGS)) +KBUILD_CFLAGS_31 += -m31 -fPIC -shared -fno-common -fno-builtin +KBUILD_CFLAGS_31 += -nostdlib -Wl,-soname=linux-vdso32.so.1 \ + $(call ld-option, -Wl$(comma)--hash-style=sysv) + +$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_31) +$(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_31) + +obj-y += vdso32_wrapper.o +extra-y += vdso32.lds +CPPFLAGS_vdso32.lds += -P -C -U$(ARCH) + +# Force dependency (incbin is bad) +$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so + +# link rule for the .so file, .lds has to be first +$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) + $(call if_changed,vdso32ld) + +# strip rule for the .so file +$(obj)/%.so: OBJCOPYFLAGS := -S +$(obj)/%.so: $(obj)/%.so.dbg FORCE + $(call if_changed,objcopy) + +# assembly rules for the .S files +$(obj-vdso32): %.o: %.S + $(call if_changed_dep,vdso32as) + +# actual build commands +quiet_cmd_vdso32ld = VDSO32L $@ + cmd_vdso32ld = $(CC) $(c_flags) -Wl,-T $^ -o $@ +quiet_cmd_vdso32as = VDSO32A $@ + cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $< + +# install commands for the unstripped file +quiet_cmd_vdso_install = INSTALL $@ + cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ + +vdso32.so: $(obj)/vdso32.so.dbg + @mkdir -p $(MODLIB)/vdso + $(call cmd,vdso_install) + +vdso_install: vdso32.so diff --git a/arch/s390/kernel/vdso32/clock_getres.S b/arch/s390/kernel/vdso32/clock_getres.S new file mode 100644 index 000000000000..9532c4e6a9d2 --- /dev/null +++ b/arch/s390/kernel/vdso32/clock_getres.S @@ -0,0 +1,39 @@ +/* + * Userland implementation of clock_getres() for 32 bits processes in a + * s390 kernel for use in the vDSO + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + */ +#include <asm/vdso.h> +#include <asm/asm-offsets.h> +#include <asm/unistd.h> + + .text + .align 4 + .globl __kernel_clock_getres + .type __kernel_clock_getres,@function +__kernel_clock_getres: + .cfi_startproc + chi %r2,CLOCK_REALTIME + je 0f + chi %r2,CLOCK_MONOTONIC + jne 3f +0: ltr %r3,%r3 + jz 2f /* res == NULL */ + basr %r1,0 +1: l %r0,4f-1b(%r1) + xc 0(4,%r3),0(%r3) /* set tp->tv_sec to zero */ + st %r0,4(%r3) /* store tp->tv_usec */ +2: lhi %r2,0 + br %r14 +3: lhi %r1,__NR_clock_getres /* fallback to svc */ + svc 0 + br %r14 +4: .long CLOCK_REALTIME_RES + .cfi_endproc + .size __kernel_clock_getres,.-__kernel_clock_getres diff --git a/arch/s390/kernel/vdso32/clock_gettime.S b/arch/s390/kernel/vdso32/clock_gettime.S new file mode 100644 index 000000000000..4a98909a8310 --- /dev/null +++ b/arch/s390/kernel/vdso32/clock_gettime.S @@ -0,0 +1,128 @@ +/* + * Userland implementation of clock_gettime() for 32 bits processes in a + * s390 kernel for use in the vDSO + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + */ +#include <asm/vdso.h> +#include <asm/asm-offsets.h> +#include <asm/unistd.h> + + .text + .align 4 + .globl __kernel_clock_gettime + .type __kernel_clock_gettime,@function +__kernel_clock_gettime: + .cfi_startproc + basr %r5,0 +0: al %r5,21f-0b(%r5) /* get &_vdso_data */ + chi %r2,CLOCK_REALTIME + je 10f + chi %r2,CLOCK_MONOTONIC + jne 19f + + /* CLOCK_MONOTONIC */ + ltr %r3,%r3 + jz 9f /* tp == NULL */ +1: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */ + tml %r4,0x0001 /* pending update ? loop */ + jnz 1b + stck 24(%r15) /* Store TOD clock */ + lm %r0,%r1,24(%r15) + s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ + sl %r1,__VDSO_XTIME_STAMP+4(%r5) + brc 3,2f + ahi %r0,-1 +2: mhi %r0,1000 /* cyc2ns(clock,cycle_delta) */ + lr %r2,%r0 + lhi %r0,1000 + ltr %r1,%r1 + mr %r0,%r0 + jnm 3f + ahi %r0,1000 +3: alr %r0,%r2 + srdl %r0,12 + al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */ + al %r1,__VDSO_XTIME_NSEC+4(%r5) + brc 12,4f + ahi %r0,1 +4: l %r2,__VDSO_XTIME_SEC+4(%r5) + al %r0,__VDSO_WTOM_NSEC(%r5) /* + wall_to_monotonic */ + al %r1,__VDSO_WTOM_NSEC+4(%r5) + brc 12,5f + ahi %r0,1 +5: al %r2,__VDSO_WTOM_SEC+4(%r5) + cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */ + jne 1b + basr %r5,0 +6: ltr %r0,%r0 + jnz 7f + cl %r1,20f-6b(%r5) + jl 8f +7: ahi %r2,1 + sl %r1,20f-6b(%r5) + brc 3,6b + ahi %r0,-1 + j 6b +8: st %r2,0(%r3) /* store tp->tv_sec */ + st %r1,4(%r3) /* store tp->tv_nsec */ +9: lhi %r2,0 + br %r14 + + /* CLOCK_REALTIME */ +10: ltr %r3,%r3 /* tp == NULL */ + jz 18f +11: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */ + tml %r4,0x0001 /* pending update ? loop */ + jnz 11b + stck 24(%r15) /* Store TOD clock */ + lm %r0,%r1,24(%r15) + s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ + sl %r1,__VDSO_XTIME_STAMP+4(%r5) + brc 3,12f + ahi %r0,-1 +12: mhi %r0,1000 /* cyc2ns(clock,cycle_delta) */ + lr %r2,%r0 + lhi %r0,1000 + ltr %r1,%r1 + mr %r0,%r0 + jnm 13f + ahi %r0,1000 +13: alr %r0,%r2 + srdl %r0,12 + al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */ + al %r1,__VDSO_XTIME_NSEC+4(%r5) + brc 12,14f + ahi %r0,1 +14: l %r2,__VDSO_XTIME_SEC+4(%r5) + cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */ + jne 11b + basr %r5,0 +15: ltr %r0,%r0 + jnz 16f + cl %r1,20f-15b(%r5) + jl 17f +16: ahi %r2,1 + sl %r1,20f-15b(%r5) + brc 3,15b + ahi %r0,-1 + j 15b +17: st %r2,0(%r3) /* store tp->tv_sec */ + st %r1,4(%r3) /* store tp->tv_nsec */ +18: lhi %r2,0 + br %r14 + + /* Fallback to system call */ +19: lhi %r1,__NR_clock_gettime + svc 0 + br %r14 + +20: .long 1000000000 +21: .long _vdso_data - 0b + .cfi_endproc + .size __kernel_clock_gettime,.-__kernel_clock_gettime diff --git a/arch/s390/kernel/vdso32/gettimeofday.S b/arch/s390/kernel/vdso32/gettimeofday.S new file mode 100644 index 000000000000..c32f29c3d70c --- /dev/null +++ b/arch/s390/kernel/vdso32/gettimeofday.S @@ -0,0 +1,82 @@ +/* + * Userland implementation of gettimeofday() for 32 bits processes in a + * s390 kernel for use in the vDSO + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + */ +#include <asm/vdso.h> +#include <asm/asm-offsets.h> +#include <asm/unistd.h> + +#include <asm/vdso.h> +#include <asm/asm-offsets.h> +#include <asm/unistd.h> + + .text + .align 4 + .globl __kernel_gettimeofday + .type __kernel_gettimeofday,@function +__kernel_gettimeofday: + .cfi_startproc + basr %r5,0 +0: al %r5,13f-0b(%r5) /* get &_vdso_data */ +1: ltr %r3,%r3 /* check if tz is NULL */ + je 2f + mvc 0(8,%r3),__VDSO_TIMEZONE(%r5) +2: ltr %r2,%r2 /* check if tv is NULL */ + je 10f + l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */ + tml %r4,0x0001 /* pending update ? loop */ + jnz 1b + stck 24(%r15) /* Store TOD clock */ + lm %r0,%r1,24(%r15) + s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ + sl %r1,__VDSO_XTIME_STAMP+4(%r5) + brc 3,3f + ahi %r0,-1 +3: mhi %r0,1000 /* cyc2ns(clock,cycle_delta) */ + st %r0,24(%r15) + lhi %r0,1000 + ltr %r1,%r1 + mr %r0,%r0 + jnm 4f + ahi %r0,1000 +4: al %r0,24(%r15) + srdl %r0,12 + al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */ + al %r1,__VDSO_XTIME_NSEC+4(%r5) + brc 12,5f + ahi %r0,1 +5: mvc 24(4,%r15),__VDSO_XTIME_SEC+4(%r5) + cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */ + jne 1b + l %r4,24(%r15) /* get tv_sec from stack */ + basr %r5,0 +6: ltr %r0,%r0 + jnz 7f + cl %r1,11f-6b(%r5) + jl 8f +7: ahi %r4,1 + sl %r1,11f-6b(%r5) + brc 3,6b + ahi %r0,-1 + j 6b +8: st %r4,0(%r2) /* store tv->tv_sec */ + ltr %r1,%r1 + m %r0,12f-6b(%r5) + jnm 9f + al %r0,12f-6b(%r5) +9: srl %r0,6 + st %r0,4(%r2) /* store tv->tv_usec */ +10: slr %r2,%r2 + br %r14 +11: .long 1000000000 +12: .long 274877907 +13: .long _vdso_data - 0b + .cfi_endproc + .size __kernel_gettimeofday,.-__kernel_gettimeofday diff --git a/arch/s390/kernel/vdso32/note.S b/arch/s390/kernel/vdso32/note.S new file mode 100644 index 000000000000..79a071e4357e --- /dev/null +++ b/arch/s390/kernel/vdso32/note.S @@ -0,0 +1,12 @@ +/* + * This supplies .note.* sections to go into the PT_NOTE inside the vDSO text. + * Here we can supply some information useful to userland. + */ + +#include <linux/uts.h> +#include <linux/version.h> +#include <linux/elfnote.h> + +ELFNOTE_START(Linux, 0, "a") + .long LINUX_VERSION_CODE +ELFNOTE_END diff --git a/arch/s390/kernel/vdso32/vdso32.lds.S b/arch/s390/kernel/vdso32/vdso32.lds.S new file mode 100644 index 000000000000..a8c379fa1247 --- /dev/null +++ b/arch/s390/kernel/vdso32/vdso32.lds.S @@ -0,0 +1,138 @@ +/* + * This is the infamous ld script for the 32 bits vdso + * library + */ +#include <asm/vdso.h> + +OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390") +OUTPUT_ARCH(s390:31-bit) +ENTRY(_start) + +SECTIONS +{ + . = VDSO32_LBASE + SIZEOF_HEADERS; + + .hash : { *(.hash) } :text + .gnu.hash : { *(.gnu.hash) } + .dynsym : { *(.dynsym) } + .dynstr : { *(.dynstr) } + .gnu.version : { *(.gnu.version) } + .gnu.version_d : { *(.gnu.version_d) } + .gnu.version_r : { *(.gnu.version_r) } + + .note : { *(.note.*) } :text :note + + . = ALIGN(16); + .text : { + *(.text .stub .text.* .gnu.linkonce.t.*) + } :text + PROVIDE(__etext = .); + PROVIDE(_etext = .); + PROVIDE(etext = .); + + /* + * Other stuff is appended to the text segment: + */ + .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } + .rodata1 : { *(.rodata1) } + + .dynamic : { *(.dynamic) } :text :dynamic + + .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr + .eh_frame : { KEEP (*(.eh_frame)) } :text + .gcc_except_table : { *(.gcc_except_table .gcc_except_table.*) } + + .rela.dyn ALIGN(8) : { *(.rela.dyn) } + .got ALIGN(8) : { *(.got .toc) } + + _end = .; + PROVIDE(end = .); + + /* + * Stabs debugging sections are here too. + */ + .stab 0 : { *(.stab) } + .stabstr 0 : { *(.stabstr) } + .stab.excl 0 : { *(.stab.excl) } + .stab.exclstr 0 : { *(.stab.exclstr) } + .stab.index 0 : { *(.stab.index) } + .stab.indexstr 0 : { *(.stab.indexstr) } + .comment 0 : { *(.comment) } + + /* + * DWARF debug sections. + * Symbols in the DWARF debugging sections are relative to the + * beginning of the section so we begin them at 0. + */ + /* DWARF 1 */ + .debug 0 : { *(.debug) } + .line 0 : { *(.line) } + /* GNU DWARF 1 extensions */ + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_sfnames 0 : { *(.debug_sfnames) } + /* DWARF 1.1 and DWARF 2 */ + .debug_aranges 0 : { *(.debug_aranges) } + .debug_pubnames 0 : { *(.debug_pubnames) } + /* DWARF 2 */ + .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) } + .debug_abbrev 0 : { *(.debug_abbrev) } + .debug_line 0 : { *(.debug_line) } + .debug_frame 0 : { *(.debug_frame) } + .debug_str 0 : { *(.debug_str) } + .debug_loc 0 : { *(.debug_loc) } + .debug_macinfo 0 : { *(.debug_macinfo) } + /* SGI/MIPS DWARF 2 extensions */ + .debug_weaknames 0 : { *(.debug_weaknames) } + .debug_funcnames 0 : { *(.debug_funcnames) } + .debug_typenames 0 : { *(.debug_typenames) } + .debug_varnames 0 : { *(.debug_varnames) } + /* DWARF 3 */ + .debug_pubtypes 0 : { *(.debug_pubtypes) } + .debug_ranges 0 : { *(.debug_ranges) } + .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) } + + . = ALIGN(4096); + PROVIDE(_vdso_data = .); + + /DISCARD/ : { + *(.note.GNU-stack) + *(.branch_lt) + *(.data .data.* .gnu.linkonce.d.* .sdata*) + *(.bss .sbss .dynbss .dynsbss) + } +} + +/* + * Very old versions of ld do not recognize this name token; use the constant. + */ +#define PT_GNU_EH_FRAME 0x6474e550 + +/* + * We must supply the ELF program headers explicitly to get just one + * PT_LOAD segment, and set the flags explicitly to make segments read-only. + */ +PHDRS +{ + text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */ + dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ + note PT_NOTE FLAGS(4); /* PF_R */ + eh_frame_hdr PT_GNU_EH_FRAME; +} + +/* + * This controls what symbols we export from the DSO. + */ +VERSION +{ + VDSO_VERSION_STRING { + global: + /* + * Has to be there for the kernel to find + */ + __kernel_gettimeofday; + __kernel_clock_gettime; + __kernel_clock_getres; + + local: *; + }; +} diff --git a/arch/s390/kernel/vdso32/vdso32_wrapper.S b/arch/s390/kernel/vdso32/vdso32_wrapper.S new file mode 100644 index 000000000000..61639a89e70b --- /dev/null +++ b/arch/s390/kernel/vdso32/vdso32_wrapper.S @@ -0,0 +1,13 @@ +#include <linux/init.h> +#include <asm/page.h> + + .section ".data.page_aligned" + + .globl vdso32_start, vdso32_end + .balign PAGE_SIZE +vdso32_start: + .incbin "arch/s390/kernel/vdso32/vdso32.so" + .balign PAGE_SIZE +vdso32_end: + + .previous diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile new file mode 100644 index 000000000000..6fc8e829258c --- /dev/null +++ b/arch/s390/kernel/vdso64/Makefile @@ -0,0 +1,55 @@ +# List of files in the vdso, has to be asm only for now + +obj-vdso64 = gettimeofday.o clock_getres.o clock_gettime.o note.o + +# Build rules + +targets := $(obj-vdso64) vdso64.so vdso64.so.dbg +obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) + +KBUILD_AFLAGS_64 := $(filter-out -m64,$(KBUILD_AFLAGS)) +KBUILD_AFLAGS_64 += -m64 -s + +KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS)) +KBUILD_CFLAGS_64 += -m64 -fPIC -shared -fno-common -fno-builtin +KBUILD_CFLAGS_64 += -nostdlib -Wl,-soname=linux-vdso64.so.1 \ + $(call ld-option, -Wl$(comma)--hash-style=sysv) + +$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_64) +$(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_64) + +obj-y += vdso64_wrapper.o +extra-y += vdso64.lds +CPPFLAGS_vdso64.lds += -P -C -U$(ARCH) + +# Force dependency (incbin is bad) +$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so + +# link rule for the .so file, .lds has to be first +$(obj)/vdso64.so.dbg: $(src)/vdso64.lds $(obj-vdso64) + $(call if_changed,vdso64ld) + +# strip rule for the .so file +$(obj)/%.so: OBJCOPYFLAGS := -S +$(obj)/%.so: $(obj)/%.so.dbg FORCE + $(call if_changed,objcopy) + +# assembly rules for the .S files +$(obj-vdso64): %.o: %.S + $(call if_changed_dep,vdso64as) + +# actual build commands +quiet_cmd_vdso64ld = VDSO64L $@ + cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $^ -o $@ +quiet_cmd_vdso64as = VDSO64A $@ + cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $< + +# install commands for the unstripped file +quiet_cmd_vdso_install = INSTALL $@ + cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ + +vdso64.so: $(obj)/vdso64.so.dbg + @mkdir -p $(MODLIB)/vdso + $(call cmd,vdso_install) + +vdso_install: vdso64.so diff --git a/arch/s390/kernel/vdso64/clock_getres.S b/arch/s390/kernel/vdso64/clock_getres.S new file mode 100644 index 000000000000..488e31a3c0e7 --- /dev/null +++ b/arch/s390/kernel/vdso64/clock_getres.S @@ -0,0 +1,39 @@ +/* + * Userland implementation of clock_getres() for 64 bits processes in a + * s390 kernel for use in the vDSO + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + */ +#include <asm/vdso.h> +#include <asm/asm-offsets.h> +#include <asm/unistd.h> + + .text + .align 4 + .globl __kernel_clock_getres + .type __kernel_clock_getres,@function +__kernel_clock_getres: + .cfi_startproc + cghi %r2,CLOCK_REALTIME + je 0f + cghi %r2,CLOCK_MONOTONIC + jne 2f +0: ltgr %r3,%r3 + jz 1f /* res == NULL */ + larl %r1,3f + lg %r0,0(%r1) + xc 0(8,%r3),0(%r3) /* set tp->tv_sec to zero */ + stg %r0,8(%r3) /* store tp->tv_usec */ +1: lghi %r2,0 + br %r14 +2: lghi %r1,__NR_clock_getres /* fallback to svc */ + svc 0 + br %r14 +3: .quad CLOCK_REALTIME_RES + .cfi_endproc + .size __kernel_clock_getres,.-__kernel_clock_getres diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S new file mode 100644 index 000000000000..738a410b7eb2 --- /dev/null +++ b/arch/s390/kernel/vdso64/clock_gettime.S @@ -0,0 +1,89 @@ +/* + * Userland implementation of clock_gettime() for 64 bits processes in a + * s390 kernel for use in the vDSO + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + */ +#include <asm/vdso.h> +#include <asm/asm-offsets.h> +#include <asm/unistd.h> + + .text + .align 4 + .globl __kernel_clock_gettime + .type __kernel_clock_gettime,@function +__kernel_clock_gettime: + .cfi_startproc + larl %r5,_vdso_data + cghi %r2,CLOCK_REALTIME + je 4f + cghi %r2,CLOCK_MONOTONIC + jne 9f + + /* CLOCK_MONOTONIC */ + ltgr %r3,%r3 + jz 3f /* tp == NULL */ +0: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */ + tmll %r4,0x0001 /* pending update ? loop */ + jnz 0b + stck 48(%r15) /* Store TOD clock */ + lg %r1,48(%r15) + sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ + mghi %r1,1000 + srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */ + alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime */ + lg %r0,__VDSO_XTIME_SEC(%r5) + alg %r1,__VDSO_WTOM_NSEC(%r5) /* + wall_to_monotonic */ + alg %r0,__VDSO_WTOM_SEC(%r5) + clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */ + jne 0b + larl %r5,10f +1: clg %r1,0(%r5) + jl 2f + slg %r1,0(%r5) + aghi %r0,1 + j 1b +2: stg %r0,0(%r3) /* store tp->tv_sec */ + stg %r1,8(%r3) /* store tp->tv_nsec */ +3: lghi %r2,0 + br %r14 + + /* CLOCK_REALTIME */ +4: ltr %r3,%r3 /* tp == NULL */ + jz 8f +5: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */ + tmll %r4,0x0001 /* pending update ? loop */ + jnz 5b + stck 48(%r15) /* Store TOD clock */ + lg %r1,48(%r15) + sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ + mghi %r1,1000 + srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */ + alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime */ + lg %r0,__VDSO_XTIME_SEC(%r5) + clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */ + jne 5b + larl %r5,10f +6: clg %r1,0(%r5) + jl 7f + slg %r1,0(%r5) + aghi %r0,1 + j 6b +7: stg %r0,0(%r3) /* store tp->tv_sec */ + stg %r1,8(%r3) /* store tp->tv_nsec */ +8: lghi %r2,0 + br %r14 + + /* Fallback to system call */ +9: lghi %r1,__NR_clock_gettime + svc 0 + br %r14 + +10: .quad 1000000000 + .cfi_endproc + .size __kernel_clock_gettime,.-__kernel_clock_gettime diff --git a/arch/s390/kernel/vdso64/gettimeofday.S b/arch/s390/kernel/vdso64/gettimeofday.S new file mode 100644 index 000000000000..f873e75634e1 --- /dev/null +++ b/arch/s390/kernel/vdso64/gettimeofday.S @@ -0,0 +1,56 @@ +/* + * Userland implementation of gettimeofday() for 64 bits processes in a + * s390 kernel for use in the vDSO + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + */ +#include <asm/vdso.h> +#include <asm/asm-offsets.h> +#include <asm/unistd.h> + + .text + .align 4 + .globl __kernel_gettimeofday + .type __kernel_gettimeofday,@function +__kernel_gettimeofday: + .cfi_startproc + larl %r5,_vdso_data +0: ltgr %r3,%r3 /* check if tz is NULL */ + je 1f + mvc 0(8,%r3),__VDSO_TIMEZONE(%r5) +1: ltgr %r2,%r2 /* check if tv is NULL */ + je 4f + lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */ + tmll %r4,0x0001 /* pending update ? loop */ + jnz 0b + stck 48(%r15) /* Store TOD clock */ + lg %r1,48(%r15) + sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */ + mghi %r1,1000 + srlg %r1,%r1,12 /* cyc2ns(clock,cycle_delta) */ + alg %r1,__VDSO_XTIME_NSEC(%r5) /* + xtime.tv_nsec */ + lg %r0,__VDSO_XTIME_SEC(%r5) /* xtime.tv_sec */ + clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */ + jne 0b + larl %r5,5f +2: clg %r1,0(%r5) + jl 3f + slg %r1,0(%r5) + aghi %r0,1 + j 2b +3: stg %r0,0(%r2) /* store tv->tv_sec */ + slgr %r0,%r0 /* tv_nsec -> tv_usec */ + ml %r0,8(%r5) + srlg %r0,%r0,6 + stg %r0,8(%r2) /* store tv->tv_usec */ +4: lghi %r2,0 + br %r14 +5: .quad 1000000000 + .long 274877907 + .cfi_endproc + .size __kernel_gettimeofday,.-__kernel_gettimeofday diff --git a/arch/s390/kernel/vdso64/note.S b/arch/s390/kernel/vdso64/note.S new file mode 100644 index 000000000000..79a071e4357e --- /dev/null +++ b/arch/s390/kernel/vdso64/note.S @@ -0,0 +1,12 @@ +/* + * This supplies .note.* sections to go into the PT_NOTE inside the vDSO text. + * Here we can supply some information useful to userland. + */ + +#include <linux/uts.h> +#include <linux/version.h> +#include <linux/elfnote.h> + +ELFNOTE_START(Linux, 0, "a") + .long LINUX_VERSION_CODE +ELFNOTE_END diff --git a/arch/s390/kernel/vdso64/vdso64.lds.S b/arch/s390/kernel/vdso64/vdso64.lds.S new file mode 100644 index 000000000000..9f5979d102a9 --- /dev/null +++ b/arch/s390/kernel/vdso64/vdso64.lds.S @@ -0,0 +1,138 @@ +/* + * This is the infamous ld script for the 64 bits vdso + * library + */ +#include <asm/vdso.h> + +OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390") +OUTPUT_ARCH(s390:64-bit) +ENTRY(_start) + +SECTIONS +{ + . = VDSO64_LBASE + SIZEOF_HEADERS; + + .hash : { *(.hash) } :text + .gnu.hash : { *(.gnu.hash) } + .dynsym : { *(.dynsym) } + .dynstr : { *(.dynstr) } + .gnu.version : { *(.gnu.version) } + .gnu.version_d : { *(.gnu.version_d) } + .gnu.version_r : { *(.gnu.version_r) } + + .note : { *(.note.*) } :text :note + + . = ALIGN(16); + .text : { + *(.text .stub .text.* .gnu.linkonce.t.*) + } :text + PROVIDE(__etext = .); + PROVIDE(_etext = .); + PROVIDE(etext = .); + + /* + * Other stuff is appended to the text segment: + */ + .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } + .rodata1 : { *(.rodata1) } + + .dynamic : { *(.dynamic) } :text :dynamic + + .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr + .eh_frame : { KEEP (*(.eh_frame)) } :text + .gcc_except_table : { *(.gcc_except_table .gcc_except_table.*) } + + .rela.dyn ALIGN(8) : { *(.rela.dyn) } + .got ALIGN(8) : { *(.got .toc) } + + _end = .; + PROVIDE(end = .); + + /* + * Stabs debugging sections are here too. + */ + .stab 0 : { *(.stab) } + .stabstr 0 : { *(.stabstr) } + .stab.excl 0 : { *(.stab.excl) } + .stab.exclstr 0 : { *(.stab.exclstr) } + .stab.index 0 : { *(.stab.index) } + .stab.indexstr 0 : { *(.stab.indexstr) } + .comment 0 : { *(.comment) } + + /* + * DWARF debug sections. + * Symbols in the DWARF debugging sections are relative to the + * beginning of the section so we begin them at 0. + */ + /* DWARF 1 */ + .debug 0 : { *(.debug) } + .line 0 : { *(.line) } + /* GNU DWARF 1 extensions */ + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_sfnames 0 : { *(.debug_sfnames) } + /* DWARF 1.1 and DWARF 2 */ + .debug_aranges 0 : { *(.debug_aranges) } + .debug_pubnames 0 : { *(.debug_pubnames) } + /* DWARF 2 */ + .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) } + .debug_abbrev 0 : { *(.debug_abbrev) } + .debug_line 0 : { *(.debug_line) } + .debug_frame 0 : { *(.debug_frame) } + .debug_str 0 : { *(.debug_str) } + .debug_loc 0 : { *(.debug_loc) } + .debug_macinfo 0 : { *(.debug_macinfo) } + /* SGI/MIPS DWARF 2 extensions */ + .debug_weaknames 0 : { *(.debug_weaknames) } + .debug_funcnames 0 : { *(.debug_funcnames) } + .debug_typenames 0 : { *(.debug_typenames) } + .debug_varnames 0 : { *(.debug_varnames) } + /* DWARF 3 */ + .debug_pubtypes 0 : { *(.debug_pubtypes) } + .debug_ranges 0 : { *(.debug_ranges) } + .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) } + + . = ALIGN(4096); + PROVIDE(_vdso_data = .); + + /DISCARD/ : { + *(.note.GNU-stack) + *(.branch_lt) + *(.data .data.* .gnu.linkonce.d.* .sdata*) + *(.bss .sbss .dynbss .dynsbss) + } +} + +/* + * Very old versions of ld do not recognize this name token; use the constant. + */ +#define PT_GNU_EH_FRAME 0x6474e550 + +/* + * We must supply the ELF program headers explicitly to get just one + * PT_LOAD segment, and set the flags explicitly to make segments read-only. + */ +PHDRS +{ + text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */ + dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ + note PT_NOTE FLAGS(4); /* PF_R */ + eh_frame_hdr PT_GNU_EH_FRAME; +} + +/* + * This controls what symbols we export from the DSO. + */ +VERSION +{ + VDSO_VERSION_STRING { + global: + /* + * Has to be there for the kernel to find + */ + __kernel_gettimeofday; + __kernel_clock_gettime; + __kernel_clock_getres; + + local: *; + }; +} diff --git a/arch/s390/kernel/vdso64/vdso64_wrapper.S b/arch/s390/kernel/vdso64/vdso64_wrapper.S new file mode 100644 index 000000000000..d8e2ac14d564 --- /dev/null +++ b/arch/s390/kernel/vdso64/vdso64_wrapper.S @@ -0,0 +1,13 @@ +#include <linux/init.h> +#include <asm/page.h> + + .section ".data.page_aligned" + + .globl vdso64_start, vdso64_end + .balign PAGE_SIZE +vdso64_start: + .incbin "arch/s390/kernel/vdso64/vdso64.so" + .balign PAGE_SIZE +vdso64_end: + + .previous diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c index 580fc64cc735..5c8457129603 100644 --- a/arch/s390/mm/extmem.c +++ b/arch/s390/mm/extmem.c @@ -7,6 +7,9 @@ * (C) IBM Corporation 2002-2004 */ +#define KMSG_COMPONENT "extmem" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/kernel.h> #include <linux/string.h> #include <linux/spinlock.h> @@ -24,19 +27,6 @@ #include <asm/cpcmd.h> #include <asm/setup.h> -#define DCSS_DEBUG /* Debug messages on/off */ - -#define DCSS_NAME "extmem" -#ifdef DCSS_DEBUG -#define PRINT_DEBUG(x...) printk(KERN_DEBUG DCSS_NAME " debug:" x) -#else -#define PRINT_DEBUG(x...) do {} while (0) -#endif -#define PRINT_INFO(x...) printk(KERN_INFO DCSS_NAME " info:" x) -#define PRINT_WARN(x...) printk(KERN_WARNING DCSS_NAME " warning:" x) -#define PRINT_ERR(x...) printk(KERN_ERR DCSS_NAME " error:" x) - - #define DCSS_LOADSHR 0x00 #define DCSS_LOADNSR 0x04 #define DCSS_PURGESEG 0x08 @@ -286,7 +276,7 @@ query_segment_type (struct dcss_segment *seg) goto out_free; } if (diag_cc > 1) { - PRINT_WARN ("segment_type: diag returned error %ld\n", vmrc); + pr_warning("Querying a DCSS type failed with rc=%ld\n", vmrc); rc = dcss_diag_translate_rc (vmrc); goto out_free; } @@ -368,7 +358,6 @@ query_segment_type (struct dcss_segment *seg) * -EIO : could not perform query diagnose * -ENOENT : no such segment * -ENOTSUPP: multi-part segment cannot be used with linux - * -ENOSPC : segment cannot be used (overlaps with storage) * -ENOMEM : out of memory * 0 .. 6 : type of segment as defined in include/asm-s390/extmem.h */ @@ -480,9 +469,8 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long goto out_resource; } if (diag_cc > 1) { - PRINT_WARN ("segment_load: could not load segment %s - " - "diag returned error (%ld)\n", - name, end_addr); + pr_warning("Loading DCSS %s failed with rc=%ld\n", name, + end_addr); rc = dcss_diag_translate_rc(end_addr); dcss_diag(&purgeseg_scode, seg->dcss_name, &dummy, &dummy); @@ -496,15 +484,13 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long *addr = seg->start_addr; *end = seg->end; if (do_nonshared) - PRINT_INFO ("segment_load: loaded segment %s range %p .. %p " - "type %s in non-shared mode\n", name, - (void*)seg->start_addr, (void*)seg->end, - segtype_string[seg->vm_segtype]); + pr_info("DCSS %s of range %p to %p and type %s loaded as " + "exclusive-writable\n", name, (void*) seg->start_addr, + (void*) seg->end, segtype_string[seg->vm_segtype]); else { - PRINT_INFO ("segment_load: loaded segment %s range %p .. %p " - "type %s in shared mode\n", name, - (void*)seg->start_addr, (void*)seg->end, - segtype_string[seg->vm_segtype]); + pr_info("DCSS %s of range %p to %p and type %s loaded in " + "shared access mode\n", name, (void*) seg->start_addr, + (void*) seg->end, segtype_string[seg->vm_segtype]); } goto out; out_resource: @@ -593,14 +579,14 @@ segment_modify_shared (char *name, int do_nonshared) goto out_unlock; } if (do_nonshared == seg->do_nonshared) { - PRINT_INFO ("segment_modify_shared: not reloading segment %s" - " - already in requested mode\n",name); + pr_info("DCSS %s is already in the requested access " + "mode\n", name); rc = 0; goto out_unlock; } if (atomic_read (&seg->ref_count) != 1) { - PRINT_WARN ("segment_modify_shared: not reloading segment %s - " - "segment is in use by other driver(s)\n",name); + pr_warning("DCSS %s is in use and cannot be reloaded\n", + name); rc = -EAGAIN; goto out_unlock; } @@ -613,8 +599,8 @@ segment_modify_shared (char *name, int do_nonshared) seg->res->flags |= IORESOURCE_READONLY; if (request_resource(&iomem_resource, seg->res)) { - PRINT_WARN("segment_modify_shared: could not reload segment %s" - " - overlapping resources\n", name); + pr_warning("DCSS %s overlaps with used memory resources " + "and cannot be reloaded\n", name); rc = -EBUSY; kfree(seg->res); goto out_del_mem; @@ -632,9 +618,8 @@ segment_modify_shared (char *name, int do_nonshared) goto out_del_res; } if (diag_cc > 1) { - PRINT_WARN ("segment_modify_shared: could not reload segment %s" - " - diag returned error (%ld)\n", - name, end_addr); + pr_warning("Reloading DCSS %s failed with rc=%ld\n", name, + end_addr); rc = dcss_diag_translate_rc(end_addr); goto out_del_res; } @@ -673,8 +658,7 @@ segment_unload(char *name) mutex_lock(&dcss_lock); seg = segment_by_name (name); if (seg == NULL) { - PRINT_ERR ("could not find segment %s in segment_unload, " - "please report to linux390@de.ibm.com\n",name); + pr_err("Unloading unknown DCSS %s failed\n", name); goto out_unlock; } if (atomic_dec_return(&seg->ref_count) != 0) @@ -709,8 +693,7 @@ segment_save(char *name) seg = segment_by_name (name); if (seg == NULL) { - PRINT_ERR("could not find segment %s in segment_save, please " - "report to linux390@de.ibm.com\n", name); + pr_err("Saving unknown DCSS %s failed\n", name); goto out; } @@ -727,14 +710,14 @@ segment_save(char *name) response = 0; cpcmd(cmd1, NULL, 0, &response); if (response) { - PRINT_ERR("segment_save: DEFSEG failed with response code %i\n", - response); + pr_err("Saving a DCSS failed with DEFSEG response code " + "%i\n", response); goto out; } cpcmd(cmd2, NULL, 0, &response); if (response) { - PRINT_ERR("segment_save: SAVESEG failed with response code %i\n", - response); + pr_err("Saving a DCSS failed with SAVESEG response code " + "%i\n", response); goto out; } out: @@ -749,44 +732,41 @@ void segment_warning(int rc, char *seg_name) { switch (rc) { case -ENOENT: - PRINT_WARN("cannot load/query segment %s, " - "does not exist\n", seg_name); + pr_err("DCSS %s cannot be loaded or queried\n", seg_name); break; case -ENOSYS: - PRINT_WARN("cannot load/query segment %s, " - "not running on VM\n", seg_name); + pr_err("DCSS %s cannot be loaded or queried without " + "z/VM\n", seg_name); break; case -EIO: - PRINT_WARN("cannot load/query segment %s, " - "hardware error\n", seg_name); + pr_err("Loading or querying DCSS %s resulted in a " + "hardware error\n", seg_name); break; case -ENOTSUPP: - PRINT_WARN("cannot load/query segment %s, " - "is a multi-part segment\n", seg_name); + pr_err("DCSS %s has multiple page ranges and cannot be " + "loaded or queried\n", seg_name); break; case -ENOSPC: - PRINT_WARN("cannot load/query segment %s, " - "overlaps with storage\n", seg_name); + pr_err("DCSS %s overlaps with used storage and cannot " + "be loaded\n", seg_name); break; case -EBUSY: - PRINT_WARN("cannot load/query segment %s, " - "overlaps with already loaded dcss\n", seg_name); + pr_err("%s needs used memory resources and cannot be " + "loaded or queried\n", seg_name); break; case -EPERM: - PRINT_WARN("cannot load/query segment %s, " - "already loaded in incompatible mode\n", seg_name); + pr_err("DCSS %s is already loaded in a different access " + "mode\n", seg_name); break; case -ENOMEM: - PRINT_WARN("cannot load/query segment %s, " - "out of memory\n", seg_name); + pr_err("There is not enough memory to load or query " + "DCSS %s\n", seg_name); break; case -ERANGE: - PRINT_WARN("cannot load/query segment %s, " - "exceeds kernel mapping range\n", seg_name); + pr_err("DCSS %s exceeds the kernel mapping range (%lu) " + "and cannot be loaded\n", seg_name, VMEM_MAX_PHYS); break; default: - PRINT_WARN("cannot load/query segment %s, " - "return value %i\n", seg_name, rc); break; } } diff --git a/arch/sh/include/asm/elf.h b/arch/sh/include/asm/elf.h index 9eb9036a1bdc..9381397ebeb8 100644 --- a/arch/sh/include/asm/elf.h +++ b/arch/sh/include/asm/elf.h @@ -204,7 +204,7 @@ do { \ #define ARCH_HAS_SETUP_ADDITIONAL_PAGES struct linux_binprm; extern int arch_setup_additional_pages(struct linux_binprm *bprm, - int executable_stack); + int uses_interp); extern unsigned int vdso_enabled; extern void __kernel_vsyscall; diff --git a/arch/sh/kernel/vsyscall/vsyscall.c b/arch/sh/kernel/vsyscall/vsyscall.c index 95f4de0800ec..3f7e415be86a 100644 --- a/arch/sh/kernel/vsyscall/vsyscall.c +++ b/arch/sh/kernel/vsyscall/vsyscall.c @@ -59,8 +59,7 @@ int __init vsyscall_init(void) } /* Setup a VMA at program startup for the vsyscall page */ -int arch_setup_additional_pages(struct linux_binprm *bprm, - int executable_stack) +int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) { struct mm_struct *mm = current->mm; unsigned long addr; diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h index 40ca1bea7916..f51a3ddde01a 100644 --- a/arch/x86/include/asm/elf.h +++ b/arch/x86/include/asm/elf.h @@ -325,7 +325,7 @@ struct linux_binprm; #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 extern int arch_setup_additional_pages(struct linux_binprm *bprm, - int executable_stack); + int uses_interp); extern int syscall32_setup_pages(struct linux_binprm *, int exstack); #define compat_arch_setup_additional_pages syscall32_setup_pages diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c index 513f330c5832..1241f118ab56 100644 --- a/arch/x86/vdso/vdso32-setup.c +++ b/arch/x86/vdso/vdso32-setup.c @@ -310,7 +310,7 @@ int __init sysenter_setup(void) } /* Setup a VMA at program startup for the vsyscall page */ -int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack) +int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) { struct mm_struct *mm = current->mm; unsigned long addr; diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c index 257ba4a10abf..9c98cc6ba978 100644 --- a/arch/x86/vdso/vma.c +++ b/arch/x86/vdso/vma.c @@ -98,7 +98,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned len) /* Setup a VMA at program startup for the vsyscall page. Not called for compat tasks */ -int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack) +int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) { struct mm_struct *mm = current->mm; unsigned long addr; diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index f57907a2c7a1..c602b547cc6e 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -622,6 +622,16 @@ config HVC_BEAT help Toshiba's Cell Reference Set Beat Console device driver +config HVC_IUCV + bool "z/VM IUCV Hypervisor console support (VM only)" + depends on S390 + select HVC_DRIVER + select IUCV + default y + help + This driver provides a Hypervisor console (HVC) back-end to access + a Linux (console) terminal via a z/VM IUCV communication path. + config HVC_XEN bool "Xen Hypervisor Console support" depends on XEN diff --git a/drivers/char/Makefile b/drivers/char/Makefile index 52e15524af39..0e5ced85fb2b 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile @@ -51,6 +51,7 @@ obj-$(CONFIG_HVC_DRIVER) += hvc_console.o obj-$(CONFIG_HVC_IRQ) += hvc_irq.o obj-$(CONFIG_HVC_XEN) += hvc_xen.o obj-$(CONFIG_HVC_UDBG) += hvc_udbg.o +obj-$(CONFIG_HVC_IUCV) += hvc_iucv.o obj-$(CONFIG_VIRTIO_CONSOLE) += virtio_console.o obj-$(CONFIG_RAW_DRIVER) += raw.o obj-$(CONFIG_SGI_SNSC) += snsc.o snsc_event.o diff --git a/drivers/char/hvc_iucv.c b/drivers/char/hvc_iucv.c new file mode 100644 index 000000000000..5ea7d7713fca --- /dev/null +++ b/drivers/char/hvc_iucv.c @@ -0,0 +1,850 @@ +/* + * hvc_iucv.c - z/VM IUCV back-end for the Hypervisor Console (HVC) + * + * This back-end for HVC provides terminal access via + * z/VM IUCV communication paths. + * + * Copyright IBM Corp. 2008. + * + * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> + */ +#define KMSG_COMPONENT "hvc_iucv" + +#include <linux/types.h> +#include <asm/ebcdic.h> +#include <linux/mempool.h> +#include <linux/module.h> +#include <linux/tty.h> +#include <net/iucv/iucv.h> + +#include "hvc_console.h" + + +/* HVC backend for z/VM IUCV */ +#define HVC_IUCV_MAGIC 0xc9e4c3e5 +#define MAX_HVC_IUCV_LINES HVC_ALLOC_TTY_ADAPTERS +#define MEMPOOL_MIN_NR (PAGE_SIZE / sizeof(struct iucv_tty_buffer)/4) + +/* IUCV TTY message */ +#define MSG_VERSION 0x02 /* Message version */ +#define MSG_TYPE_ERROR 0x01 /* Error message */ +#define MSG_TYPE_TERMENV 0x02 /* Terminal environment variable */ +#define MSG_TYPE_TERMIOS 0x04 /* Terminal IO struct update */ +#define MSG_TYPE_WINSIZE 0x08 /* Terminal window size update */ +#define MSG_TYPE_DATA 0x10 /* Terminal data */ + +#define MSG_SIZE(s) ((s) + offsetof(struct iucv_tty_msg, data)) +struct iucv_tty_msg { + u8 version; /* Message version */ + u8 type; /* Message type */ +#define MSG_MAX_DATALEN (~(u16)0) + u16 datalen; /* Payload length */ + u8 data[]; /* Payload buffer */ +} __attribute__((packed)); + +enum iucv_state_t { + IUCV_DISCONN = 0, + IUCV_CONNECTED = 1, + IUCV_SEVERED = 2, +}; + +enum tty_state_t { + TTY_CLOSED = 0, + TTY_OPENED = 1, +}; + +struct hvc_iucv_private { + struct hvc_struct *hvc; /* HVC console struct reference */ + u8 srv_name[8]; /* IUCV service name (ebcdic) */ + enum iucv_state_t iucv_state; /* IUCV connection status */ + enum tty_state_t tty_state; /* TTY status */ + struct iucv_path *path; /* IUCV path pointer */ + spinlock_t lock; /* hvc_iucv_private lock */ + struct list_head tty_outqueue; /* outgoing IUCV messages */ + struct list_head tty_inqueue; /* incoming IUCV messages */ +}; + +struct iucv_tty_buffer { + struct list_head list; /* list pointer */ + struct iucv_message msg; /* store an incoming IUCV message */ + size_t offset; /* data buffer offset */ + struct iucv_tty_msg *mbuf; /* buffer to store input/output data */ +}; + +/* IUCV callback handler */ +static int hvc_iucv_path_pending(struct iucv_path *, u8[8], u8[16]); +static void hvc_iucv_path_severed(struct iucv_path *, u8[16]); +static void hvc_iucv_msg_pending(struct iucv_path *, struct iucv_message *); +static void hvc_iucv_msg_complete(struct iucv_path *, struct iucv_message *); + + +/* Kernel module parameters */ +static unsigned long hvc_iucv_devices; + +/* Array of allocated hvc iucv tty lines... */ +static struct hvc_iucv_private *hvc_iucv_table[MAX_HVC_IUCV_LINES]; + +/* Kmem cache and mempool for iucv_tty_buffer elements */ +static struct kmem_cache *hvc_iucv_buffer_cache; +static mempool_t *hvc_iucv_mempool; + +/* IUCV handler callback functions */ +static struct iucv_handler hvc_iucv_handler = { + .path_pending = hvc_iucv_path_pending, + .path_severed = hvc_iucv_path_severed, + .message_complete = hvc_iucv_msg_complete, + .message_pending = hvc_iucv_msg_pending, +}; + + +/** + * hvc_iucv_get_private() - Return a struct hvc_iucv_private instance. + * @num: The HVC virtual terminal number (vtermno) + * + * This function returns the struct hvc_iucv_private instance that corresponds + * to the HVC virtual terminal number specified as parameter @num. + */ +struct hvc_iucv_private *hvc_iucv_get_private(uint32_t num) +{ + if ((num < HVC_IUCV_MAGIC) || (num - HVC_IUCV_MAGIC > hvc_iucv_devices)) + return NULL; + return hvc_iucv_table[num - HVC_IUCV_MAGIC]; +} + +/** + * alloc_tty_buffer() - Returns a new struct iucv_tty_buffer element. + * @size: Size of the internal buffer used to store data. + * @flags: Memory allocation flags passed to mempool. + * + * This function allocates a new struct iucv_tty_buffer element and, optionally, + * allocates an internal data buffer with the specified size @size. + * Note: The total message size arises from the internal buffer size and the + * members of the iucv_tty_msg structure. + * + * The function returns NULL if memory allocation has failed. + */ +static struct iucv_tty_buffer *alloc_tty_buffer(size_t size, gfp_t flags) +{ + struct iucv_tty_buffer *bufp; + + bufp = mempool_alloc(hvc_iucv_mempool, flags); + if (!bufp) + return NULL; + memset(bufp, 0, sizeof(struct iucv_tty_buffer)); + + if (size > 0) { + bufp->msg.length = MSG_SIZE(size); + bufp->mbuf = kmalloc(bufp->msg.length, flags); + if (!bufp->mbuf) { + mempool_free(bufp, hvc_iucv_mempool); + return NULL; + } + bufp->mbuf->version = MSG_VERSION; + bufp->mbuf->type = MSG_TYPE_DATA; + bufp->mbuf->datalen = (u16) size; + } + return bufp; +} + +/** + * destroy_tty_buffer() - destroy struct iucv_tty_buffer element. + * @bufp: Pointer to a struct iucv_tty_buffer element, SHALL NOT be NULL. + * + * The destroy_tty_buffer() function frees the internal data buffer and returns + * the struct iucv_tty_buffer element back to the mempool for freeing. + */ +static void destroy_tty_buffer(struct iucv_tty_buffer *bufp) +{ + kfree(bufp->mbuf); + mempool_free(bufp, hvc_iucv_mempool); +} + +/** + * destroy_tty_buffer_list() - call destroy_tty_buffer() for each list element. + * @list: List head pointer to a list containing struct iucv_tty_buffer + * elements. + * + * Calls destroy_tty_buffer() for each struct iucv_tty_buffer element in the + * list @list. + */ +static void destroy_tty_buffer_list(struct list_head *list) +{ + struct iucv_tty_buffer *ent, *next; + + list_for_each_entry_safe(ent, next, list, list) { + list_del(&ent->list); + destroy_tty_buffer(ent); + } +} + +/** + * hvc_iucv_write() - Receive IUCV message write data to HVC console buffer. + * @priv: Pointer to hvc_iucv_private structure. + * @buf: HVC console buffer for writing received terminal data. + * @count: HVC console buffer size. + * @has_more_data: Pointer to an int variable. + * + * The function picks up pending messages from the input queue and receives + * the message data that is then written to the specified buffer @buf. + * If the buffer size @count is less than the data message size, then the + * message is kept on the input queue and @has_more_data is set to 1. + * If the message data has been entirely written, the message is removed from + * the input queue. + * + * The function returns the number of bytes written to the terminal, zero if + * there are no pending data messages available or if there is no established + * IUCV path. + * If the IUCV path has been severed, then -EPIPE is returned to cause a + * hang up (that is issued by the HVC console layer). + */ +static int hvc_iucv_write(struct hvc_iucv_private *priv, + char *buf, int count, int *has_more_data) +{ + struct iucv_tty_buffer *rb; + int written; + int rc; + + /* Immediately return if there is no IUCV connection */ + if (priv->iucv_state == IUCV_DISCONN) + return 0; + + /* If the IUCV path has been severed, return -EPIPE to inform the + * hvc console layer to hang up the tty device. */ + if (priv->iucv_state == IUCV_SEVERED) + return -EPIPE; + + /* check if there are pending messages */ + if (list_empty(&priv->tty_inqueue)) + return 0; + + /* receive a iucv message and flip data to the tty (ldisc) */ + rb = list_first_entry(&priv->tty_inqueue, struct iucv_tty_buffer, list); + + written = 0; + if (!rb->mbuf) { /* message not yet received ... */ + /* allocate mem to store msg data; if no memory is available + * then leave the buffer on the list and re-try later */ + rb->mbuf = kmalloc(rb->msg.length, GFP_ATOMIC); + if (!rb->mbuf) + return -ENOMEM; + + rc = __iucv_message_receive(priv->path, &rb->msg, 0, + rb->mbuf, rb->msg.length, NULL); + switch (rc) { + case 0: /* Successful */ + break; + case 2: /* No message found */ + case 9: /* Message purged */ + break; + default: + written = -EIO; + } + /* remove buffer if an error has occured or received data + * is not correct */ + if (rc || (rb->mbuf->version != MSG_VERSION) || + (rb->msg.length != MSG_SIZE(rb->mbuf->datalen))) + goto out_remove_buffer; + } + + switch (rb->mbuf->type) { + case MSG_TYPE_DATA: + written = min_t(int, rb->mbuf->datalen - rb->offset, count); + memcpy(buf, rb->mbuf->data + rb->offset, written); + if (written < (rb->mbuf->datalen - rb->offset)) { + rb->offset += written; + *has_more_data = 1; + goto out_written; + } + break; + + case MSG_TYPE_WINSIZE: + if (rb->mbuf->datalen != sizeof(struct winsize)) + break; + hvc_resize(priv->hvc, *((struct winsize *)rb->mbuf->data)); + break; + + case MSG_TYPE_ERROR: /* ignored ... */ + case MSG_TYPE_TERMENV: /* ignored ... */ + case MSG_TYPE_TERMIOS: /* ignored ... */ + break; + } + +out_remove_buffer: + list_del(&rb->list); + destroy_tty_buffer(rb); + *has_more_data = !list_empty(&priv->tty_inqueue); + +out_written: + return written; +} + +/** + * hvc_iucv_get_chars() - HVC get_chars operation. + * @vtermno: HVC virtual terminal number. + * @buf: Pointer to a buffer to store data + * @count: Size of buffer available for writing + * + * The hvc_console thread calls this method to read characters from + * the terminal backend. If an IUCV communication path has been established, + * pending IUCV messages are received and data is copied into buffer @buf + * up to @count bytes. + * + * Locking: The routine gets called under an irqsave() spinlock; and + * the routine locks the struct hvc_iucv_private->lock to call + * helper functions. + */ +static int hvc_iucv_get_chars(uint32_t vtermno, char *buf, int count) +{ + struct hvc_iucv_private *priv = hvc_iucv_get_private(vtermno); + int written; + int has_more_data; + + if (count <= 0) + return 0; + + if (!priv) + return -ENODEV; + + spin_lock(&priv->lock); + has_more_data = 0; + written = hvc_iucv_write(priv, buf, count, &has_more_data); + spin_unlock(&priv->lock); + + /* if there are still messages on the queue... schedule another run */ + if (has_more_data) + hvc_kick(); + + return written; +} + +/** + * hvc_iucv_send() - Send an IUCV message containing terminal data. + * @priv: Pointer to struct hvc_iucv_private instance. + * @buf: Buffer containing data to send. + * @size: Size of buffer and amount of data to send. + * + * If an IUCV communication path is established, the function copies the buffer + * data to a newly allocated struct iucv_tty_buffer element, sends the data and + * puts the element to the outqueue. + * + * If there is no IUCV communication path established, the function returns 0. + * If an existing IUCV communicaton path has been severed, the function returns + * -EPIPE (can be passed to HVC layer to cause a tty hangup). + */ +static int hvc_iucv_send(struct hvc_iucv_private *priv, const char *buf, + int count) +{ + struct iucv_tty_buffer *sb; + int rc; + u16 len; + + if (priv->iucv_state == IUCV_SEVERED) + return -EPIPE; + + if (priv->iucv_state == IUCV_DISCONN) + return 0; + + len = min_t(u16, MSG_MAX_DATALEN, count); + + /* allocate internal buffer to store msg data and also compute total + * message length */ + sb = alloc_tty_buffer(len, GFP_ATOMIC); + if (!sb) + return -ENOMEM; + + sb->mbuf->datalen = len; + memcpy(sb->mbuf->data, buf, len); + + list_add_tail(&sb->list, &priv->tty_outqueue); + + rc = __iucv_message_send(priv->path, &sb->msg, 0, 0, + (void *) sb->mbuf, sb->msg.length); + if (rc) { + list_del(&sb->list); + destroy_tty_buffer(sb); + len = 0; + } + + return len; +} + +/** + * hvc_iucv_put_chars() - HVC put_chars operation. + * @vtermno: HVC virtual terminal number. + * @buf: Pointer to an buffer to read data from + * @count: Size of buffer available for reading + * + * The hvc_console thread calls this method to write characters from + * to the terminal backend. + * The function calls hvc_iucv_send() under the lock of the + * struct hvc_iucv_private instance that corresponds to the tty @vtermno. + * + * Locking: The method gets called under an irqsave() spinlock; and + * locks struct hvc_iucv_private->lock. + */ +static int hvc_iucv_put_chars(uint32_t vtermno, const char *buf, int count) +{ + struct hvc_iucv_private *priv = hvc_iucv_get_private(vtermno); + int sent; + + if (count <= 0) + return 0; + + if (!priv) + return -ENODEV; + + spin_lock(&priv->lock); + sent = hvc_iucv_send(priv, buf, count); + spin_unlock(&priv->lock); + + return sent; +} + +/** + * hvc_iucv_notifier_add() - HVC notifier for opening a TTY for the first time. + * @hp: Pointer to the HVC device (struct hvc_struct) + * @id: Additional data (originally passed to hvc_alloc): the index of an struct + * hvc_iucv_private instance. + * + * The function sets the tty state to TTY_OPEN for the struct hvc_iucv_private + * instance that is derived from @id. Always returns 0. + * + * Locking: struct hvc_iucv_private->lock, spin_lock_bh + */ +static int hvc_iucv_notifier_add(struct hvc_struct *hp, int id) +{ + struct hvc_iucv_private *priv; + + priv = hvc_iucv_get_private(id); + if (!priv) + return 0; + + spin_lock_bh(&priv->lock); + priv->tty_state = TTY_OPENED; + spin_unlock_bh(&priv->lock); + + return 0; +} + +/** + * hvc_iucv_cleanup() - Clean up function if the tty portion is finally closed. + * @priv: Pointer to the struct hvc_iucv_private instance. + * + * The functions severs the established IUCV communication path (if any), and + * destroy struct iucv_tty_buffer elements from the in- and outqueue. Finally, + * the functions resets the states to TTY_CLOSED and IUCV_DISCONN. + */ +static void hvc_iucv_cleanup(struct hvc_iucv_private *priv) +{ + destroy_tty_buffer_list(&priv->tty_outqueue); + destroy_tty_buffer_list(&priv->tty_inqueue); + + priv->tty_state = TTY_CLOSED; + priv->iucv_state = IUCV_DISCONN; +} + +/** + * hvc_iucv_notifier_hangup() - HVC notifier for tty hangups. + * @hp: Pointer to the HVC device (struct hvc_struct) + * @id: Additional data (originally passed to hvc_alloc): the index of an struct + * hvc_iucv_private instance. + * + * This routine notifies the HVC backend that a tty hangup (carrier loss, + * virtual or otherwise) has occured. + * + * The HVC backend for z/VM IUCV ignores virtual hangups (vhangup()), to keep + * an existing IUCV communication path established. + * (Background: vhangup() is called from user space (by getty or login) to + * disable writing to the tty by other applications). + * + * If the tty has been opened (e.g. getty) and an established IUCV path has been + * severed (we caused the tty hangup in that case), then the functions invokes + * hvc_iucv_cleanup() to clean up. + * + * Locking: struct hvc_iucv_private->lock + */ +static void hvc_iucv_notifier_hangup(struct hvc_struct *hp, int id) +{ + struct hvc_iucv_private *priv; + + priv = hvc_iucv_get_private(id); + if (!priv) + return; + + spin_lock_bh(&priv->lock); + /* NOTE: If the hangup was scheduled by ourself (from the iucv + * path_servered callback [IUCV_SEVERED]), then we have to + * finally clean up the tty backend structure and set state to + * TTY_CLOSED. + * + * If the tty was hung up otherwise (e.g. vhangup()), then we + * ignore this hangup and keep an established IUCV path open... + * (...the reason is that we are not able to connect back to the + * client if we disconnect on hang up) */ + priv->tty_state = TTY_CLOSED; + + if (priv->iucv_state == IUCV_SEVERED) + hvc_iucv_cleanup(priv); + spin_unlock_bh(&priv->lock); +} + +/** + * hvc_iucv_notifier_del() - HVC notifier for closing a TTY for the last time. + * @hp: Pointer to the HVC device (struct hvc_struct) + * @id: Additional data (originally passed to hvc_alloc): + * the index of an struct hvc_iucv_private instance. + * + * This routine notifies the HVC backend that the last tty device file + * descriptor has been closed. + * The function calls hvc_iucv_cleanup() to clean up the struct hvc_iucv_private + * instance. + * + * Locking: struct hvc_iucv_private->lock + */ +static void hvc_iucv_notifier_del(struct hvc_struct *hp, int id) +{ + struct hvc_iucv_private *priv; + struct iucv_path *path; + + priv = hvc_iucv_get_private(id); + if (!priv) + return; + + spin_lock_bh(&priv->lock); + path = priv->path; /* save reference to IUCV path */ + priv->path = NULL; + hvc_iucv_cleanup(priv); + spin_unlock_bh(&priv->lock); + + /* sever IUCV path outside of priv->lock due to lock ordering of: + * priv->lock <--> iucv_table_lock */ + if (path) { + iucv_path_sever(path, NULL); + iucv_path_free(path); + } +} + +/** + * hvc_iucv_path_pending() - IUCV handler to process a connection request. + * @path: Pending path (struct iucv_path) + * @ipvmid: Originator z/VM system identifier + * @ipuser: User specified data for this path + * (AF_IUCV: port/service name and originator port) + * + * The function uses the @ipuser data to check to determine if the pending + * path belongs to a terminal managed by this HVC backend. + * If the check is successful, then an additional check is done to ensure + * that a terminal cannot be accessed multiple times (only one connection + * to a terminal is allowed). In that particular case, the pending path is + * severed. If it is the first connection, the pending path is accepted and + * associated to the struct hvc_iucv_private. The iucv state is updated to + * reflect that a communication path has been established. + * + * Returns 0 if the path belongs to a terminal managed by the this HVC backend; + * otherwise returns -ENODEV in order to dispatch this path to other handlers. + * + * Locking: struct hvc_iucv_private->lock + */ +static int hvc_iucv_path_pending(struct iucv_path *path, + u8 ipvmid[8], u8 ipuser[16]) +{ + struct hvc_iucv_private *priv; + u8 nuser_data[16]; + int i, rc; + + priv = NULL; + for (i = 0; i < hvc_iucv_devices; i++) + if (hvc_iucv_table[i] && + (0 == memcmp(hvc_iucv_table[i]->srv_name, ipuser, 8))) { + priv = hvc_iucv_table[i]; + break; + } + + if (!priv) + return -ENODEV; + + spin_lock(&priv->lock); + + /* If the terminal is already connected or being severed, then sever + * this path to enforce that there is only ONE established communication + * path per terminal. */ + if (priv->iucv_state != IUCV_DISCONN) { + iucv_path_sever(path, ipuser); + iucv_path_free(path); + goto out_path_handled; + } + + /* accept path */ + memcpy(nuser_data, ipuser + 8, 8); /* remote service (for af_iucv) */ + memcpy(nuser_data + 8, ipuser, 8); /* local service (for af_iucv) */ + path->msglim = 0xffff; /* IUCV MSGLIMIT */ + path->flags &= ~IUCV_IPRMDATA; /* TODO: use IUCV_IPRMDATA */ + rc = iucv_path_accept(path, &hvc_iucv_handler, nuser_data, priv); + if (rc) { + iucv_path_sever(path, ipuser); + iucv_path_free(path); + goto out_path_handled; + } + priv->path = path; + priv->iucv_state = IUCV_CONNECTED; + +out_path_handled: + spin_unlock(&priv->lock); + return 0; +} + +/** + * hvc_iucv_path_severed() - IUCV handler to process a path sever. + * @path: Pending path (struct iucv_path) + * @ipuser: User specified data for this path + * (AF_IUCV: port/service name and originator port) + * + * The function also severs the path (as required by the IUCV protocol) and + * sets the iucv state to IUCV_SEVERED for the associated struct + * hvc_iucv_private instance. Later, the IUCV_SEVERED state triggers a tty + * hangup (hvc_iucv_get_chars() / hvc_iucv_write()). + * + * If tty portion of the HVC is closed then clean up the outqueue in addition. + * + * Locking: struct hvc_iucv_private->lock + */ +static void hvc_iucv_path_severed(struct iucv_path *path, u8 ipuser[16]) +{ + struct hvc_iucv_private *priv = path->private; + + spin_lock(&priv->lock); + priv->iucv_state = IUCV_SEVERED; + + /* NOTE: If the tty has not yet been opened by a getty program + * (e.g. to see console messages), then cleanup the + * hvc_iucv_private structure to allow re-connects. + * + * If the tty has been opened, the get_chars() callback returns + * -EPIPE to signal the hvc console layer to hang up the tty. */ + priv->path = NULL; + if (priv->tty_state == TTY_CLOSED) + hvc_iucv_cleanup(priv); + spin_unlock(&priv->lock); + + /* finally sever path (outside of priv->lock due to lock ordering) */ + iucv_path_sever(path, ipuser); + iucv_path_free(path); +} + +/** + * hvc_iucv_msg_pending() - IUCV handler to process an incoming IUCV message. + * @path: Pending path (struct iucv_path) + * @msg: Pointer to the IUCV message + * + * The function stores an incoming message on the input queue for later + * processing (by hvc_iucv_get_chars() / hvc_iucv_write()). + * However, if the tty has not yet been opened, the message is rejected. + * + * Locking: struct hvc_iucv_private->lock + */ +static void hvc_iucv_msg_pending(struct iucv_path *path, + struct iucv_message *msg) +{ + struct hvc_iucv_private *priv = path->private; + struct iucv_tty_buffer *rb; + + spin_lock(&priv->lock); + + /* reject messages if tty has not yet been opened */ + if (priv->tty_state == TTY_CLOSED) { + iucv_message_reject(path, msg); + goto unlock_return; + } + + /* allocate buffer an empty buffer element */ + rb = alloc_tty_buffer(0, GFP_ATOMIC); + if (!rb) { + iucv_message_reject(path, msg); + goto unlock_return; /* -ENOMEM */ + } + rb->msg = *msg; + + list_add_tail(&rb->list, &priv->tty_inqueue); + + hvc_kick(); /* wakup hvc console thread */ + +unlock_return: + spin_unlock(&priv->lock); +} + +/** + * hvc_iucv_msg_complete() - IUCV handler to process message completion + * @path: Pending path (struct iucv_path) + * @msg: Pointer to the IUCV message + * + * The function is called upon completion of message delivery and the + * message is removed from the outqueue. Additional delivery information + * can be found in msg->audit: rejected messages (0x040000 (IPADRJCT)) and + * purged messages (0x010000 (IPADPGNR)). + * + * Locking: struct hvc_iucv_private->lock + */ +static void hvc_iucv_msg_complete(struct iucv_path *path, + struct iucv_message *msg) +{ + struct hvc_iucv_private *priv = path->private; + struct iucv_tty_buffer *ent, *next; + LIST_HEAD(list_remove); + + spin_lock(&priv->lock); + list_for_each_entry_safe(ent, next, &priv->tty_outqueue, list) + if (ent->msg.id == msg->id) { + list_move(&ent->list, &list_remove); + break; + } + spin_unlock(&priv->lock); + destroy_tty_buffer_list(&list_remove); +} + + +/* HVC operations */ +static struct hv_ops hvc_iucv_ops = { + .get_chars = hvc_iucv_get_chars, + .put_chars = hvc_iucv_put_chars, + .notifier_add = hvc_iucv_notifier_add, + .notifier_del = hvc_iucv_notifier_del, + .notifier_hangup = hvc_iucv_notifier_hangup, +}; + +/** + * hvc_iucv_alloc() - Allocates a new struct hvc_iucv_private instance + * @id: hvc_iucv_table index + * + * This function allocates a new hvc_iucv_private struct and put the + * instance into hvc_iucv_table at index @id. + * Returns 0 on success; otherwise non-zero. + */ +static int __init hvc_iucv_alloc(int id) +{ + struct hvc_iucv_private *priv; + char name[9]; + int rc; + + priv = kzalloc(sizeof(struct hvc_iucv_private), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + spin_lock_init(&priv->lock); + INIT_LIST_HEAD(&priv->tty_outqueue); + INIT_LIST_HEAD(&priv->tty_inqueue); + + /* Finally allocate hvc */ + priv->hvc = hvc_alloc(HVC_IUCV_MAGIC + id, + HVC_IUCV_MAGIC + id, &hvc_iucv_ops, PAGE_SIZE); + if (IS_ERR(priv->hvc)) { + rc = PTR_ERR(priv->hvc); + kfree(priv); + return rc; + } + + /* setup iucv related information */ + snprintf(name, 9, "ihvc%-4d", id); + memcpy(priv->srv_name, name, 8); + ASCEBC(priv->srv_name, 8); + + hvc_iucv_table[id] = priv; + return 0; +} + +/** + * hvc_iucv_init() - Initialization of HVC backend for z/VM IUCV + */ +static int __init hvc_iucv_init(void) +{ + int rc, i; + + if (!MACHINE_IS_VM) { + pr_warning("The z/VM IUCV Hypervisor console cannot be " + "used without z/VM.\n"); + return -ENODEV; + } + + if (!hvc_iucv_devices) + return -ENODEV; + + if (hvc_iucv_devices > MAX_HVC_IUCV_LINES) + return -EINVAL; + + hvc_iucv_buffer_cache = kmem_cache_create(KMSG_COMPONENT, + sizeof(struct iucv_tty_buffer), + 0, 0, NULL); + if (!hvc_iucv_buffer_cache) { + pr_err("Not enough memory for driver initialization " + "(rs=%d).\n", 1); + return -ENOMEM; + } + + hvc_iucv_mempool = mempool_create_slab_pool(MEMPOOL_MIN_NR, + hvc_iucv_buffer_cache); + if (!hvc_iucv_mempool) { + pr_err("Not enough memory for driver initialization " + "(rs=%d).\n", 2); + kmem_cache_destroy(hvc_iucv_buffer_cache); + return -ENOMEM; + } + + /* allocate hvc_iucv_private structs */ + for (i = 0; i < hvc_iucv_devices; i++) { + rc = hvc_iucv_alloc(i); + if (rc) { + pr_err("Could not create new z/VM IUCV HVC backend " + "rc=%d.\n", rc); + goto out_error_hvc; + } + } + + /* register IUCV callback handler */ + rc = iucv_register(&hvc_iucv_handler, 0); + if (rc) { + pr_err("Could not register iucv handler (rc=%d).\n", rc); + goto out_error_iucv; + } + + return 0; + +out_error_iucv: + iucv_unregister(&hvc_iucv_handler, 0); +out_error_hvc: + for (i = 0; i < hvc_iucv_devices; i++) + if (hvc_iucv_table[i]) { + if (hvc_iucv_table[i]->hvc) + hvc_remove(hvc_iucv_table[i]->hvc); + kfree(hvc_iucv_table[i]); + } + mempool_destroy(hvc_iucv_mempool); + kmem_cache_destroy(hvc_iucv_buffer_cache); + return rc; +} + +/** + * hvc_iucv_console_init() - Early console initialization + */ +static int __init hvc_iucv_console_init(void) +{ + if (!MACHINE_IS_VM || !hvc_iucv_devices) + return -ENODEV; + return hvc_instantiate(HVC_IUCV_MAGIC, 0, &hvc_iucv_ops); +} + +/** + * hvc_iucv_config() - Parsing of hvc_iucv= kernel command line parameter + * @val: Parameter value (numeric) + */ +static int __init hvc_iucv_config(char *val) +{ + return strict_strtoul(val, 10, &hvc_iucv_devices); +} + + +module_init(hvc_iucv_init); +console_initcall(hvc_iucv_console_init); +__setup("hvc_iucv=", hvc_iucv_config); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("HVC back-end for z/VM IUCV."); +MODULE_AUTHOR("Hendrik Brueckner <brueckner@linux.vnet.ibm.com>"); diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index 921443b01d16..2ef25731d197 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -23,6 +23,7 @@ /* This is ugly... */ #define PRINTK_HEADER "dasd_devmap:" +#define DASD_BUS_ID_SIZE 20 #include "dasd_int.h" @@ -41,7 +42,7 @@ EXPORT_SYMBOL_GPL(dasd_page_cache); */ struct dasd_devmap { struct list_head list; - char bus_id[BUS_ID_SIZE]; + char bus_id[DASD_BUS_ID_SIZE]; unsigned int devindex; unsigned short features; struct dasd_device *device; @@ -94,7 +95,7 @@ dasd_hash_busid(const char *bus_id) int hash, i; hash = 0; - for (i = 0; (i < BUS_ID_SIZE) && *bus_id; i++, bus_id++) + for (i = 0; (i < DASD_BUS_ID_SIZE) && *bus_id; i++, bus_id++) hash += *bus_id; return hash & 0xff; } @@ -301,7 +302,7 @@ dasd_parse_range( char *parsestring ) { int from, from_id0, from_id1; int to, to_id0, to_id1; int features, rc; - char bus_id[BUS_ID_SIZE+1], *str; + char bus_id[DASD_BUS_ID_SIZE+1], *str; str = parsestring; rc = dasd_busid(&str, &from_id0, &from_id1, &from); @@ -407,14 +408,14 @@ dasd_add_busid(const char *bus_id, int features) devmap = NULL; hash = dasd_hash_busid(bus_id); list_for_each_entry(tmp, &dasd_hashlists[hash], list) - if (strncmp(tmp->bus_id, bus_id, BUS_ID_SIZE) == 0) { + if (strncmp(tmp->bus_id, bus_id, DASD_BUS_ID_SIZE) == 0) { devmap = tmp; break; } if (!devmap) { /* This bus_id is new. */ new->devindex = dasd_max_devindex++; - strncpy(new->bus_id, bus_id, BUS_ID_SIZE); + strncpy(new->bus_id, bus_id, DASD_BUS_ID_SIZE); new->features = features; new->device = NULL; list_add(&new->list, &dasd_hashlists[hash]); @@ -439,7 +440,7 @@ dasd_find_busid(const char *bus_id) devmap = ERR_PTR(-ENODEV); hash = dasd_hash_busid(bus_id); list_for_each_entry(tmp, &dasd_hashlists[hash], list) { - if (strncmp(tmp->bus_id, bus_id, BUS_ID_SIZE) == 0) { + if (strncmp(tmp->bus_id, bus_id, DASD_BUS_ID_SIZE) == 0) { devmap = tmp; break; } @@ -561,7 +562,7 @@ dasd_create_device(struct ccw_device *cdev) } spin_lock_irqsave(get_ccwdev_lock(cdev), flags); - cdev->dev.driver_data = device; + dev_set_drvdata(&cdev->dev, device); spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags); return device; @@ -597,7 +598,7 @@ dasd_delete_device(struct dasd_device *device) /* Disconnect dasd_device structure from ccw_device structure. */ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); - device->cdev->dev.driver_data = NULL; + dev_set_drvdata(&device->cdev->dev, NULL); spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); /* @@ -638,7 +639,7 @@ dasd_put_device_wake(struct dasd_device *device) struct dasd_device * dasd_device_from_cdev_locked(struct ccw_device *cdev) { - struct dasd_device *device = cdev->dev.driver_data; + struct dasd_device *device = dev_get_drvdata(&cdev->dev); if (!device) return ERR_PTR(-ENODEV); diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c index 9088de84b45d..bf6fd348f20e 100644 --- a/drivers/s390/block/dasd_proc.c +++ b/drivers/s390/block/dasd_proc.c @@ -180,12 +180,12 @@ dasd_calc_metrics(char *page, char **start, off_t off, #ifdef CONFIG_DASD_PROFILE static char * -dasd_statistics_array(char *str, unsigned int *array, int shift) +dasd_statistics_array(char *str, unsigned int *array, int factor) { int i; for (i = 0; i < 32; i++) { - str += sprintf(str, "%7d ", array[i] >> shift); + str += sprintf(str, "%7d ", array[i] / factor); if (i == 15) str += sprintf(str, "\n"); } @@ -202,7 +202,7 @@ dasd_statistics_read(char *page, char **start, off_t off, #ifdef CONFIG_DASD_PROFILE struct dasd_profile_info_t *prof; char *str; - int shift; + int factor; /* check for active profiling */ if (dasd_profile_level == DASD_PROFILE_OFF) { @@ -214,12 +214,14 @@ dasd_statistics_read(char *page, char **start, off_t off, prof = &dasd_global_profile; /* prevent couter 'overflow' on output */ - for (shift = 0; (prof->dasd_io_reqs >> shift) > 9999999; shift++); + for (factor = 1; (prof->dasd_io_reqs / factor) > 9999999; + factor *= 10); str = page; str += sprintf(str, "%d dasd I/O requests\n", prof->dasd_io_reqs); - str += sprintf(str, "with %d sectors(512B each)\n", + str += sprintf(str, "with %u sectors(512B each)\n", prof->dasd_io_sects); + str += sprintf(str, "Scale Factor is %d\n", factor); str += sprintf(str, " __<4 ___8 __16 __32 __64 _128 " " _256 _512 __1k __2k __4k __8k " @@ -230,22 +232,22 @@ dasd_statistics_read(char *page, char **start, off_t off, " __1G __2G __4G " " _>4G\n"); str += sprintf(str, "Histogram of sizes (512B secs)\n"); - str = dasd_statistics_array(str, prof->dasd_io_secs, shift); + str = dasd_statistics_array(str, prof->dasd_io_secs, factor); str += sprintf(str, "Histogram of I/O times (microseconds)\n"); - str = dasd_statistics_array(str, prof->dasd_io_times, shift); + str = dasd_statistics_array(str, prof->dasd_io_times, factor); str += sprintf(str, "Histogram of I/O times per sector\n"); - str = dasd_statistics_array(str, prof->dasd_io_timps, shift); + str = dasd_statistics_array(str, prof->dasd_io_timps, factor); str += sprintf(str, "Histogram of I/O time till ssch\n"); - str = dasd_statistics_array(str, prof->dasd_io_time1, shift); + str = dasd_statistics_array(str, prof->dasd_io_time1, factor); str += sprintf(str, "Histogram of I/O time between ssch and irq\n"); - str = dasd_statistics_array(str, prof->dasd_io_time2, shift); + str = dasd_statistics_array(str, prof->dasd_io_time2, factor); str += sprintf(str, "Histogram of I/O time between ssch " "and irq per sector\n"); - str = dasd_statistics_array(str, prof->dasd_io_time2ps, shift); + str = dasd_statistics_array(str, prof->dasd_io_time2ps, factor); str += sprintf(str, "Histogram of I/O time between irq and end\n"); - str = dasd_statistics_array(str, prof->dasd_io_time3, shift); + str = dasd_statistics_array(str, prof->dasd_io_time3, factor); str += sprintf(str, "# of req in chanq at enqueuing (1..32) \n"); - str = dasd_statistics_array(str, prof->dasd_io_nr_req, shift); + str = dasd_statistics_array(str, prof->dasd_io_nr_req, factor); len = str - page; #else len = sprintf(page, "Statistics are not activated in this kernel\n"); diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 63f26a135fe5..26ffc6ab441d 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -4,6 +4,9 @@ * Authors: Carsten Otte, Stefan Weinhuber, Gerald Schaefer */ +#define KMSG_COMPONENT "dcssblk" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/ctype.h> @@ -17,19 +20,10 @@ #include <linux/interrupt.h> #include <asm/s390_rdev.h> -//#define DCSSBLK_DEBUG /* Debug messages on/off */ #define DCSSBLK_NAME "dcssblk" #define DCSSBLK_MINORS_PER_DISK 1 #define DCSSBLK_PARM_LEN 400 - -#ifdef DCSSBLK_DEBUG -#define PRINT_DEBUG(x...) printk(KERN_DEBUG DCSSBLK_NAME " debug: " x) -#else -#define PRINT_DEBUG(x...) do {} while (0) -#endif -#define PRINT_INFO(x...) printk(KERN_INFO DCSSBLK_NAME " info: " x) -#define PRINT_WARN(x...) printk(KERN_WARNING DCSSBLK_NAME " warning: " x) -#define PRINT_ERR(x...) printk(KERN_ERR DCSSBLK_NAME " error: " x) +#define DCSS_BUS_ID_SIZE 20 static int dcssblk_open(struct block_device *bdev, fmode_t mode); static int dcssblk_release(struct gendisk *disk, fmode_t mode); @@ -50,7 +44,7 @@ static struct block_device_operations dcssblk_devops = { struct dcssblk_dev_info { struct list_head lh; struct device dev; - char segment_name[BUS_ID_SIZE]; + char segment_name[DCSS_BUS_ID_SIZE]; atomic_t use_count; struct gendisk *gd; unsigned long start; @@ -65,7 +59,7 @@ struct dcssblk_dev_info { struct segment_info { struct list_head lh; - char segment_name[BUS_ID_SIZE]; + char segment_name[DCSS_BUS_ID_SIZE]; unsigned long start; unsigned long end; int segment_type; @@ -261,10 +255,9 @@ dcssblk_is_continuous(struct dcssblk_dev_info *dev_info) /* check continuity */ for (i = 0; i < dev_info->num_of_segments - 1; i++) { if ((sort_list[i].end + 1) != sort_list[i+1].start) { - PRINT_ERR("Segment %s is not contiguous with " - "segment %s\n", - sort_list[i].segment_name, - sort_list[i+1].segment_name); + pr_err("Adjacent DCSSs %s and %s are not " + "contiguous\n", sort_list[i].segment_name, + sort_list[i+1].segment_name); rc = -EINVAL; goto out; } @@ -275,10 +268,10 @@ dcssblk_is_continuous(struct dcssblk_dev_info *dev_info) !(sort_list[i+1].segment_type & SEGMENT_EXCLUSIVE) || (sort_list[i+1].segment_type == SEG_TYPE_ER)) { - PRINT_ERR("Segment %s has different type from " - "segment %s\n", - sort_list[i].segment_name, - sort_list[i+1].segment_name); + pr_err("DCSS %s and DCSS %s have " + "incompatible types\n", + sort_list[i].segment_name, + sort_list[i+1].segment_name); rc = -EINVAL; goto out; } @@ -380,8 +373,9 @@ dcssblk_shared_store(struct device *dev, struct device_attribute *attr, const ch } else if (inbuf[0] == '0') { /* reload segments in exclusive mode */ if (dev_info->segment_type == SEG_TYPE_SC) { - PRINT_ERR("Segment type SC (%s) cannot be loaded in " - "non-shared mode\n", dev_info->segment_name); + pr_err("DCSS %s is of type SC and cannot be " + "loaded as exclusive-writable\n", + dev_info->segment_name); rc = -EINVAL; goto out; } @@ -404,9 +398,8 @@ dcssblk_shared_store(struct device *dev, struct device_attribute *attr, const ch goto out; removeseg: - PRINT_ERR("Could not reload segment(s) of the device %s, removing " - "segment(s) now!\n", - dev_info->segment_name); + pr_err("DCSS device %s is removed after a failed access mode " + "change\n", dev_info->segment_name); temp = entry; list_for_each_entry(entry, &dev_info->seg_list, lh) { if (entry != temp) @@ -454,17 +447,17 @@ dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char if (inbuf[0] == '1') { if (atomic_read(&dev_info->use_count) == 0) { // device is idle => we save immediately - PRINT_INFO("Saving segment(s) of the device %s\n", - dev_info->segment_name); + pr_info("All DCSSs that map to device %s are " + "saved\n", dev_info->segment_name); list_for_each_entry(entry, &dev_info->seg_list, lh) { segment_save(entry->segment_name); } } else { // device is busy => we save it when it becomes // idle in dcssblk_release - PRINT_INFO("Device %s is currently busy, segment(s) " - "will be saved when it becomes idle...\n", - dev_info->segment_name); + pr_info("Device %s is in use, its DCSSs will be " + "saved when it becomes idle\n", + dev_info->segment_name); dev_info->save_pending = 1; } } else if (inbuf[0] == '0') { @@ -472,9 +465,9 @@ dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char // device is busy & the user wants to undo his save // request dev_info->save_pending = 0; - PRINT_INFO("Pending save for segment(s) of the device " - "%s deactivated\n", - dev_info->segment_name); + pr_info("A pending save request for device %s " + "has been canceled\n", + dev_info->segment_name); } } else { up_write(&dcssblk_devices_sem); @@ -614,9 +607,8 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char seg_byte_size = (dev_info->end - dev_info->start + 1); set_capacity(dev_info->gd, seg_byte_size >> 9); // size in sectors - PRINT_INFO("Loaded segment(s) %s, size = %lu Byte, " - "capacity = %lu (512 Byte) sectors\n", local_buf, - seg_byte_size, seg_byte_size >> 9); + pr_info("Loaded %s with total size %lu bytes and capacity %lu " + "sectors\n", local_buf, seg_byte_size, seg_byte_size >> 9); dev_info->save_pending = 0; dev_info->is_shared = 1; @@ -744,13 +736,15 @@ dcssblk_remove_store(struct device *dev, struct device_attribute *attr, const ch dev_info = dcssblk_get_device_by_name(local_buf); if (dev_info == NULL) { up_write(&dcssblk_devices_sem); - PRINT_WARN("Device %s is not loaded!\n", local_buf); + pr_warning("Device %s cannot be removed because it is not a " + "known device\n", local_buf); rc = -ENODEV; goto out_buf; } if (atomic_read(&dev_info->use_count) != 0) { up_write(&dcssblk_devices_sem); - PRINT_WARN("Device %s is in use!\n", local_buf); + pr_warning("Device %s cannot be removed while it is in " + "use\n", local_buf); rc = -EBUSY; goto out_buf; } @@ -807,8 +801,8 @@ dcssblk_release(struct gendisk *disk, fmode_t mode) down_write(&dcssblk_devices_sem); if (atomic_dec_and_test(&dev_info->use_count) && (dev_info->save_pending)) { - PRINT_INFO("Device %s became idle and is being saved now\n", - dev_info->segment_name); + pr_info("Device %s has become idle and is being saved " + "now\n", dev_info->segment_name); list_for_each_entry(entry, &dev_info->seg_list, lh) { segment_save(entry->segment_name); } @@ -851,7 +845,8 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio) case SEG_TYPE_SC: /* cannot write to these segments */ if (bio_data_dir(bio) == WRITE) { - PRINT_WARN("rejecting write to ro device %s\n", + pr_warning("Writing to %s failed because it " + "is a read-only device\n", dev_name(&dev_info->dev)); goto fail; } diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c index 03916989ed2d..76814f3e898a 100644 --- a/drivers/s390/block/xpram.c +++ b/drivers/s390/block/xpram.c @@ -25,6 +25,9 @@ * generic hard disk support to replace ad-hoc partitioning */ +#define KMSG_COMPONENT "xpram" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/ctype.h> /* isdigit, isxdigit */ @@ -42,12 +45,6 @@ #define XPRAM_DEVS 1 /* one partition */ #define XPRAM_MAX_DEVS 32 /* maximal number of devices (partitions) */ -#define PRINT_DEBUG(x...) printk(KERN_DEBUG XPRAM_NAME " debug:" x) -#define PRINT_INFO(x...) printk(KERN_INFO XPRAM_NAME " info:" x) -#define PRINT_WARN(x...) printk(KERN_WARNING XPRAM_NAME " warning:" x) -#define PRINT_ERR(x...) printk(KERN_ERR XPRAM_NAME " error:" x) - - typedef struct { unsigned int size; /* size of xpram segment in pages */ unsigned int offset; /* start page of xpram segment */ @@ -264,7 +261,7 @@ static int __init xpram_setup_sizes(unsigned long pages) /* Check number of devices. */ if (devs <= 0 || devs > XPRAM_MAX_DEVS) { - PRINT_ERR("invalid number %d of devices\n",devs); + pr_err("%d is not a valid number of XPRAM devices\n",devs); return -EINVAL; } xpram_devs = devs; @@ -295,22 +292,22 @@ static int __init xpram_setup_sizes(unsigned long pages) mem_auto_no++; } - PRINT_INFO(" number of devices (partitions): %d \n", xpram_devs); + pr_info(" number of devices (partitions): %d \n", xpram_devs); for (i = 0; i < xpram_devs; i++) { if (xpram_sizes[i]) - PRINT_INFO(" size of partition %d: %u kB\n", - i, xpram_sizes[i]); + pr_info(" size of partition %d: %u kB\n", + i, xpram_sizes[i]); else - PRINT_INFO(" size of partition %d to be set " - "automatically\n",i); + pr_info(" size of partition %d to be set " + "automatically\n",i); } - PRINT_DEBUG(" memory needed (for sized partitions): %lu kB\n", - mem_needed); - PRINT_DEBUG(" partitions to be sized automatically: %d\n", - mem_auto_no); + pr_info(" memory needed (for sized partitions): %lu kB\n", + mem_needed); + pr_info(" partitions to be sized automatically: %d\n", + mem_auto_no); if (mem_needed > pages * 4) { - PRINT_ERR("Not enough expanded memory available\n"); + pr_err("Not enough expanded memory available\n"); return -EINVAL; } @@ -322,8 +319,8 @@ static int __init xpram_setup_sizes(unsigned long pages) */ if (mem_auto_no) { mem_auto = ((pages - mem_needed / 4) / mem_auto_no) * 4; - PRINT_INFO(" automatically determined " - "partition size: %lu kB\n", mem_auto); + pr_info(" automatically determined " + "partition size: %lu kB\n", mem_auto); for (i = 0; i < xpram_devs; i++) if (xpram_sizes[i] == 0) xpram_sizes[i] = mem_auto; @@ -405,12 +402,12 @@ static int __init xpram_init(void) /* Find out size of expanded memory. */ if (xpram_present() != 0) { - PRINT_WARN("No expanded memory available\n"); + pr_err("No expanded memory available\n"); return -ENODEV; } xpram_pages = xpram_highest_page_index() + 1; - PRINT_INFO(" %u pages expanded memory found (%lu KB).\n", - xpram_pages, (unsigned long) xpram_pages*4); + pr_info(" %u pages expanded memory found (%lu KB).\n", + xpram_pages, (unsigned long) xpram_pages*4); rc = xpram_setup_sizes(xpram_pages); if (rc) return rc; diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c index 35fd8dfcaaa6..97e63cf46944 100644 --- a/drivers/s390/char/monreader.c +++ b/drivers/s390/char/monreader.c @@ -7,6 +7,9 @@ * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> */ +#define KMSG_COMPONENT "monreader" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> @@ -24,19 +27,6 @@ #include <asm/ebcdic.h> #include <asm/extmem.h> -//#define MON_DEBUG /* Debug messages on/off */ - -#define MON_NAME "monreader" - -#define P_INFO(x...) printk(KERN_INFO MON_NAME " info: " x) -#define P_ERROR(x...) printk(KERN_ERR MON_NAME " error: " x) -#define P_WARNING(x...) printk(KERN_WARNING MON_NAME " warning: " x) - -#ifdef MON_DEBUG -#define P_DEBUG(x...) printk(KERN_DEBUG MON_NAME " debug: " x) -#else -#define P_DEBUG(x...) do {} while (0) -#endif #define MON_COLLECT_SAMPLE 0x80 #define MON_COLLECT_EVENT 0x40 @@ -172,7 +162,7 @@ static int mon_send_reply(struct mon_msg *monmsg, } else monmsg->replied_msglim = 1; if (rc) { - P_ERROR("read, IUCV reply failed with rc = %i\n\n", rc); + pr_err("Reading monitor data failed with rc=%i\n", rc); return -EIO; } return 0; @@ -251,7 +241,8 @@ static void mon_iucv_path_severed(struct iucv_path *path, u8 ipuser[16]) { struct mon_private *monpriv = path->private; - P_ERROR("IUCV connection severed with rc = 0x%X\n", ipuser[0]); + pr_err("z/VM *MONITOR system service disconnected with rc=%i\n", + ipuser[0]); iucv_path_sever(path, NULL); atomic_set(&monpriv->iucv_severed, 1); wake_up(&mon_conn_wait_queue); @@ -266,8 +257,7 @@ static void mon_iucv_message_pending(struct iucv_path *path, memcpy(&monpriv->msg_array[monpriv->write_index]->msg, msg, sizeof(*msg)); if (atomic_inc_return(&monpriv->msglim_count) == MON_MSGLIM) { - P_WARNING("IUCV message pending, message limit (%i) reached\n", - MON_MSGLIM); + pr_warning("The read queue for monitor data is full\n"); monpriv->msg_array[monpriv->write_index]->msglim_reached = 1; } monpriv->write_index = (monpriv->write_index + 1) % MON_MSGLIM; @@ -311,8 +301,8 @@ static int mon_open(struct inode *inode, struct file *filp) rc = iucv_path_connect(monpriv->path, &monreader_iucv_handler, MON_SERVICE, NULL, user_data_connect, monpriv); if (rc) { - P_ERROR("iucv connection to *MONITOR failed with " - "IPUSER SEVER code = %i\n", rc); + pr_err("Connecting to the z/VM *MONITOR system service " + "failed with rc=%i\n", rc); rc = -EIO; goto out_path; } @@ -353,7 +343,8 @@ static int mon_close(struct inode *inode, struct file *filp) */ rc = iucv_path_sever(monpriv->path, user_data_sever); if (rc) - P_ERROR("close, iucv_sever failed with rc = %i\n", rc); + pr_warning("Disconnecting the z/VM *MONITOR system service " + "failed with rc=%i\n", rc); atomic_set(&monpriv->iucv_severed, 0); atomic_set(&monpriv->iucv_connected, 0); @@ -469,7 +460,8 @@ static int __init mon_init(void) int rc; if (!MACHINE_IS_VM) { - P_ERROR("not running under z/VM, driver not loaded\n"); + pr_err("The z/VM *MONITOR record device driver cannot be " + "loaded without z/VM\n"); return -ENODEV; } @@ -478,7 +470,8 @@ static int __init mon_init(void) */ rc = iucv_register(&monreader_iucv_handler, 1); if (rc) { - P_ERROR("failed to register with iucv driver\n"); + pr_err("The z/VM *MONITOR record device driver failed to " + "register with IUCV\n"); return rc; } @@ -488,8 +481,8 @@ static int __init mon_init(void) goto out_iucv; } if (rc != SEG_TYPE_SC) { - P_ERROR("segment %s has unsupported type, should be SC\n", - mon_dcss_name); + pr_err("The specified *MONITOR DCSS %s does not have the " + "required type SC\n", mon_dcss_name); rc = -EINVAL; goto out_iucv; } diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c index 4d71aa8c1a79..c7d7483bab9a 100644 --- a/drivers/s390/char/monwriter.c +++ b/drivers/s390/char/monwriter.c @@ -8,6 +8,9 @@ * Author(s): Melissa Howland <Melissa.Howland@us.ibm.com> */ +#define KMSG_COMPONENT "monwriter" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> @@ -64,9 +67,9 @@ static int monwrite_diag(struct monwrite_hdr *myhdr, char *buffer, int fcn) rc = appldata_asm(&id, fcn, (void *) buffer, myhdr->datalen); if (rc <= 0) return rc; + pr_err("Writing monitor data failed with rc=%i\n", rc); if (rc == 5) return -EPERM; - printk("DIAG X'DC' error with return code: %i\n", rc); return -EINVAL; } diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index ec9c0bcf66ee..506390496416 100644 --- a/drivers/s390/char/sclp_cmd.c +++ b/drivers/s390/char/sclp_cmd.c @@ -6,6 +6,9 @@ * Peter Oberparleiter <peter.oberparleiter@de.ibm.com> */ +#define KMSG_COMPONENT "sclp_cmd" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/completion.h> #include <linux/init.h> #include <linux/errno.h> @@ -16,9 +19,8 @@ #include <linux/memory.h> #include <asm/chpid.h> #include <asm/sclp.h> -#include "sclp.h" -#define TAG "sclp_cmd: " +#include "sclp.h" #define SCLP_CMDW_READ_SCP_INFO 0x00020001 #define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001 @@ -169,8 +171,8 @@ static int do_sync_request(sclp_cmdw_t cmd, void *sccb) /* Check response. */ if (request->status != SCLP_REQ_DONE) { - printk(KERN_WARNING TAG "sync request failed " - "(cmd=0x%08x, status=0x%02x)\n", cmd, request->status); + pr_warning("sync request failed (cmd=0x%08x, " + "status=0x%02x)\n", cmd, request->status); rc = -EIO; } out: @@ -224,8 +226,8 @@ int sclp_get_cpu_info(struct sclp_cpu_info *info) if (rc) goto out; if (sccb->header.response_code != 0x0010) { - printk(KERN_WARNING TAG "readcpuinfo failed " - "(response=0x%04x)\n", sccb->header.response_code); + pr_warning("readcpuinfo failed (response=0x%04x)\n", + sccb->header.response_code); rc = -EIO; goto out; } @@ -262,8 +264,9 @@ static int do_cpu_configure(sclp_cmdw_t cmd) case 0x0120: break; default: - printk(KERN_WARNING TAG "configure cpu failed (cmd=0x%08x, " - "response=0x%04x)\n", cmd, sccb->header.response_code); + pr_warning("configure cpu failed (cmd=0x%08x, " + "response=0x%04x)\n", cmd, + sccb->header.response_code); rc = -EIO; break; } @@ -626,9 +629,9 @@ static int do_chp_configure(sclp_cmdw_t cmd) case 0x0450: break; default: - printk(KERN_WARNING TAG "configure channel-path failed " - "(cmd=0x%08x, response=0x%04x)\n", cmd, - sccb->header.response_code); + pr_warning("configure channel-path failed " + "(cmd=0x%08x, response=0x%04x)\n", cmd, + sccb->header.response_code); rc = -EIO; break; } @@ -695,8 +698,8 @@ int sclp_chp_read_info(struct sclp_chp_info *info) if (rc) goto out; if (sccb->header.response_code != 0x0010) { - printk(KERN_WARNING TAG "read channel-path info failed " - "(response=0x%04x)\n", sccb->header.response_code); + pr_warning("read channel-path info failed " + "(response=0x%04x)\n", sccb->header.response_code); rc = -EIO; goto out; } diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c index 4cebd6ee6d27..b497afe061cc 100644 --- a/drivers/s390/char/sclp_config.c +++ b/drivers/s390/char/sclp_config.c @@ -5,15 +5,17 @@ * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> */ +#define KMSG_COMPONENT "sclp_config" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/init.h> #include <linux/errno.h> #include <linux/cpu.h> #include <linux/sysdev.h> #include <linux/workqueue.h> #include <asm/smp.h> -#include "sclp.h" -#define TAG "sclp_config: " +#include "sclp.h" struct conf_mgm_data { u8 reserved; @@ -31,7 +33,7 @@ static void sclp_cpu_capability_notify(struct work_struct *work) int cpu; struct sys_device *sysdev; - printk(KERN_WARNING TAG "cpu capability changed.\n"); + pr_warning("cpu capability changed.\n"); get_online_cpus(); for_each_online_cpu(cpu) { sysdev = get_cpu_sysdev(cpu); @@ -78,7 +80,7 @@ static int __init sclp_conf_init(void) return rc; if (!(sclp_conf_register.sclp_send_mask & EVTYP_CONFMGMDATA_MASK)) { - printk(KERN_WARNING TAG "no configuration management.\n"); + pr_warning("no configuration management.\n"); sclp_unregister(&sclp_conf_register); rc = -ENOSYS; } diff --git a/drivers/s390/char/sclp_cpi_sys.c b/drivers/s390/char/sclp_cpi_sys.c index d887bd261d28..62c2647f37f4 100644 --- a/drivers/s390/char/sclp_cpi_sys.c +++ b/drivers/s390/char/sclp_cpi_sys.c @@ -7,6 +7,9 @@ * Michael Ernst <mernst@de.ibm.com> */ +#define KMSG_COMPONENT "sclp_cpi" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/kernel.h> #include <linux/init.h> #include <linux/stat.h> @@ -20,6 +23,7 @@ #include <linux/completion.h> #include <asm/ebcdic.h> #include <asm/sclp.h> + #include "sclp.h" #include "sclp_rw.h" #include "sclp_cpi_sys.h" @@ -150,16 +154,16 @@ static int cpi_req(void) wait_for_completion(&completion); if (req->status != SCLP_REQ_DONE) { - printk(KERN_WARNING "cpi: request failed (status=0x%02x)\n", - req->status); + pr_warning("request failed (status=0x%02x)\n", + req->status); rc = -EIO; goto out_free_req; } response = ((struct cpi_sccb *) req->sccb)->header.response_code; if (response != 0x0020) { - printk(KERN_WARNING "cpi: failed with " - "response code 0x%x\n", response); + pr_warning("request failed with response code 0x%x\n", + response); rc = -EIO; } diff --git a/drivers/s390/char/sclp_sdias.c b/drivers/s390/char/sclp_sdias.c index 8b854857ba07..6a1c58dc61a7 100644 --- a/drivers/s390/char/sclp_sdias.c +++ b/drivers/s390/char/sclp_sdias.c @@ -5,15 +5,18 @@ * Author(s): Michael Holzheu */ +#define KMSG_COMPONENT "sclp_sdias" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/sched.h> #include <asm/sclp.h> #include <asm/debug.h> #include <asm/ipl.h> + #include "sclp.h" #include "sclp_rw.h" #define TRACE(x...) debug_sprintf_event(sdias_dbf, 1, x) -#define ERROR_MSG(x...) printk ( KERN_ALERT "SDIAS: " x ) #define SDIAS_RETRIES 300 #define SDIAS_SLEEP_TICKS 50 @@ -131,7 +134,7 @@ int sclp_sdias_blk_count(void) rc = sdias_sclp_send(&request); if (rc) { - ERROR_MSG("sclp_send failed for get_nr_blocks\n"); + pr_err("sclp_send failed for get_nr_blocks\n"); goto out; } if (sccb.hdr.response_code != 0x0020) { @@ -145,7 +148,8 @@ int sclp_sdias_blk_count(void) rc = sccb.evbuf.blk_cnt; break; default: - ERROR_MSG("SCLP error: %x\n", sccb.evbuf.event_status); + pr_err("SCLP error: %x\n", + sccb.evbuf.event_status); rc = -EIO; goto out; } @@ -201,7 +205,7 @@ int sclp_sdias_copy(void *dest, int start_blk, int nr_blks) rc = sdias_sclp_send(&request); if (rc) { - ERROR_MSG("sclp_send failed: %x\n", rc); + pr_err("sclp_send failed: %x\n", rc); goto out; } if (sccb.hdr.response_code != 0x0020) { @@ -219,9 +223,9 @@ int sclp_sdias_copy(void *dest, int start_blk, int nr_blks) case EVSTATE_NO_DATA: TRACE("no data\n"); default: - ERROR_MSG("Error from SCLP while copying hsa. " - "Event status = %x\n", - sccb.evbuf.event_status); + pr_err("Error from SCLP while copying hsa. " + "Event status = %x\n", + sccb.evbuf.event_status); rc = -EIO; } out: diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c index 9854f19f5e62..a839aa531d7c 100644 --- a/drivers/s390/char/sclp_vt220.c +++ b/drivers/s390/char/sclp_vt220.c @@ -583,23 +583,6 @@ sclp_vt220_chars_in_buffer(struct tty_struct *tty) return count; } -static void -__sclp_vt220_flush_buffer(void) -{ - unsigned long flags; - - sclp_vt220_emit_current(); - spin_lock_irqsave(&sclp_vt220_lock, flags); - if (timer_pending(&sclp_vt220_timer)) - del_timer(&sclp_vt220_timer); - while (sclp_vt220_outqueue_count > 0) { - spin_unlock_irqrestore(&sclp_vt220_lock, flags); - sclp_sync_wait(); - spin_lock_irqsave(&sclp_vt220_lock, flags); - } - spin_unlock_irqrestore(&sclp_vt220_lock, flags); -} - /* * Pass on all buffers to the hardware. Return only when there are no more * buffers pending. @@ -745,6 +728,22 @@ sclp_vt220_con_device(struct console *c, int *index) return sclp_vt220_driver; } +static void __sclp_vt220_flush_buffer(void) +{ + unsigned long flags; + + sclp_vt220_emit_current(); + spin_lock_irqsave(&sclp_vt220_lock, flags); + if (timer_pending(&sclp_vt220_timer)) + del_timer(&sclp_vt220_timer); + while (sclp_vt220_outqueue_count > 0) { + spin_unlock_irqrestore(&sclp_vt220_lock, flags); + sclp_sync_wait(); + spin_lock_irqsave(&sclp_vt220_lock, flags); + } + spin_unlock_irqrestore(&sclp_vt220_lock, flags); +} + static int sclp_vt220_notify(struct notifier_block *self, unsigned long event, void *data) diff --git a/drivers/s390/char/tape.h b/drivers/s390/char/tape.h index d0d565a05dfe..c07809c8016a 100644 --- a/drivers/s390/char/tape.h +++ b/drivers/s390/char/tape.h @@ -324,8 +324,6 @@ static inline void tape_proc_cleanup (void) {;} #endif /* a function for dumping device sense info */ -extern void tape_dump_sense(struct tape_device *, struct tape_request *, - struct irb *); extern void tape_dump_sense_dbf(struct tape_device *, struct tape_request *, struct irb *); diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c index 22ca34361ed7..6d0d4abdb3e2 100644 --- a/drivers/s390/char/tape_34xx.c +++ b/drivers/s390/char/tape_34xx.c @@ -8,6 +8,8 @@ * Martin Schwidefsky <schwidefsky@de.ibm.com> */ +#define KMSG_COMPONENT "tape" + #include <linux/module.h> #include <linux/init.h> #include <linux/bio.h> @@ -18,8 +20,6 @@ #include "tape.h" #include "tape_std.h" -#define PRINTK_HEADER "TAPE_34XX: " - /* * Pointer to debug area. */ @@ -203,8 +203,7 @@ tape_34xx_unsolicited_irq(struct tape_device *device, struct irb *irb) tape_34xx_schedule_work(device, TO_MSEN); } else { DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id); - PRINT_WARN("Unsolicited IRQ (Device End) caught.\n"); - tape_dump_sense(device, NULL, irb); + tape_dump_sense_dbf(device, NULL, irb); } return TAPE_IO_SUCCESS; } @@ -226,9 +225,7 @@ tape_34xx_erp_read_opposite(struct tape_device *device, tape_std_read_backward(device, request); return tape_34xx_erp_retry(request); } - if (request->op != TO_RBA) - PRINT_ERR("read_opposite called with state:%s\n", - tape_op_verbose[request->op]); + /* * We tried to read forward and backward, but hat no * success -> failed. @@ -241,13 +238,10 @@ tape_34xx_erp_bug(struct tape_device *device, struct tape_request *request, struct irb *irb, int no) { if (request->op != TO_ASSIGN) { - PRINT_WARN("An unexpected condition #%d was caught in " - "tape error recovery.\n", no); - PRINT_WARN("Please report this incident.\n"); - if (request) - PRINT_WARN("Operation of tape:%s\n", - tape_op_verbose[request->op]); - tape_dump_sense(device, request, irb); + dev_err(&device->cdev->dev, "An unexpected condition %d was " + "caught in tape error recovery. Please report this " + "incident", no); + tape_dump_sense_dbf(device, request, irb); } return tape_34xx_erp_failed(request, -EIO); } @@ -261,9 +255,9 @@ tape_34xx_erp_overrun(struct tape_device *device, struct tape_request *request, struct irb *irb) { if (irb->ecw[3] == 0x40) { - PRINT_WARN ("Data overrun error between control-unit " - "and drive. Use a faster channel connection, " - "if possible! \n"); + dev_warn (&device->cdev->dev, "Data overrun error between " + "control-unit and drive. Use a faster channel " + "connection, if possible!"); return tape_34xx_erp_failed(request, -EIO); } return tape_34xx_erp_bug(device, request, irb, -1); @@ -280,7 +274,8 @@ tape_34xx_erp_sequence(struct tape_device *device, /* * cu detected incorrect block-id sequence on tape. */ - PRINT_WARN("Illegal block-id sequence found!\n"); + dev_warn (&device->cdev->dev, "Illegal block-id sequence " + "found!"); return tape_34xx_erp_failed(request, -EIO); } /* @@ -393,8 +388,6 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, /* Writing at physical end of volume */ return tape_34xx_erp_failed(request, -ENOSPC); default: - PRINT_ERR("Invalid op in %s:%i\n", - __func__, __LINE__); return tape_34xx_erp_failed(request, 0); } } @@ -420,7 +413,7 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, irb, -4); /* data check is permanent, CU recovery has failed */ - PRINT_WARN("Permanent read error\n"); + dev_warn (&device->cdev->dev, "Permanent read error"); return tape_34xx_erp_failed(request, -EIO); case 0x25: // a write data check occurred @@ -433,22 +426,25 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, irb, -5); // data check is permanent, cu-recovery has failed - PRINT_WARN("Permanent write error\n"); + dev_warn (&device->cdev->dev, "Permanent write error"); return tape_34xx_erp_failed(request, -EIO); case 0x26: /* Data Check (read opposite) occurred. */ return tape_34xx_erp_read_opposite(device, request); case 0x28: /* ID-Mark at tape start couldn't be written */ - PRINT_WARN("ID-Mark could not be written.\n"); + dev_warn (&device->cdev->dev, "ID-Mark could not be " + "written."); return tape_34xx_erp_failed(request, -EIO); case 0x31: /* Tape void. Tried to read beyond end of device. */ - PRINT_WARN("Read beyond end of recorded area.\n"); + dev_warn (&device->cdev->dev, "Read beyond end of " + "recorded area."); return tape_34xx_erp_failed(request, -ENOSPC); case 0x41: /* Record sequence error. */ - PRINT_WARN("Invalid block-id sequence found.\n"); + dev_warn (&device->cdev->dev, "Invalid block-id " + "sequence found."); return tape_34xx_erp_failed(request, -EIO); default: /* all data checks for 3480 should result in one of @@ -470,16 +466,12 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, switch (sense[3]) { case 0x00: /* Unit check with erpa code 0. Report and ignore. */ - PRINT_WARN("Non-error sense was found. " - "Unit-check will be ignored.\n"); return TAPE_IO_SUCCESS; case 0x21: /* * Data streaming not operational. CU will switch to * interlock mode. Reissue the command. */ - PRINT_WARN("Data streaming not operational. " - "Switching to interlock-mode.\n"); return tape_34xx_erp_retry(request); case 0x22: /* @@ -487,11 +479,7 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, * error on the lower interface, internal path not usable, * or error during cartridge load. */ - PRINT_WARN("A path equipment check occurred. One of the " - "following conditions occurred:\n"); - PRINT_WARN("drive adapter error, buffer error on the lower " - "interface, internal path not usable, error " - "during cartridge load.\n"); + dev_warn (&device->cdev->dev, "path equipment check occurred."); return tape_34xx_erp_failed(request, -EIO); case 0x24: /* @@ -514,7 +502,6 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, * but the hardware isn't capable to do idrc, or a perform * subsystem func is issued and the CU is not on-line. */ - PRINT_WARN ("Function incompatible. Try to switch off idrc\n"); return tape_34xx_erp_failed(request, -EIO); case 0x2a: /* @@ -552,23 +539,24 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, * reading the format id mark or that that format specified * is not supported by the drive. */ - PRINT_WARN("Drive not capable processing the tape format!\n"); + dev_warn (&device->cdev->dev, "Drive not capable processing " + "the tape format!"); return tape_34xx_erp_failed(request, -EMEDIUMTYPE); case 0x30: /* The medium is write protected. */ - PRINT_WARN("Medium is write protected!\n"); + dev_warn (&device->cdev->dev, "Medium is write protected!"); return tape_34xx_erp_failed(request, -EACCES); case 0x32: // Tension loss. We cannot recover this, it's an I/O error. - PRINT_WARN("The drive lost tape tension.\n"); + dev_warn (&device->cdev->dev, "The drive lost tape tension."); return tape_34xx_erp_failed(request, -EIO); case 0x33: /* * Load Failure. The cartridge was not inserted correctly or * the tape is not threaded correctly. */ - PRINT_WARN("Cartridge load failure. Reload the cartridge " - "and try again.\n"); + dev_warn (&device->cdev->dev, "Cartridge load failure. Reload " + "the cartridge and try again."); tape_34xx_delete_sbid_from(device, 0); return tape_34xx_erp_failed(request, -EIO); case 0x34: @@ -576,8 +564,8 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, * Unload failure. The drive cannot maintain tape tension * and control tape movement during an unload operation. */ - PRINT_WARN("Failure during cartridge unload. " - "Please try manually.\n"); + dev_warn (&device->cdev->dev, "Failure during cartridge " + "unload, try manually."); if (request->op == TO_RUN) return tape_34xx_erp_failed(request, -EIO); return tape_34xx_erp_bug(device, request, irb, sense[3]); @@ -589,8 +577,8 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, * - the cartridge loader does not respond correctly * - a failure occurs during an index, load, or unload cycle */ - PRINT_WARN("Equipment check! Please check the drive and " - "the cartridge loader.\n"); + dev_warn (&device->cdev->dev, "Equipment check! Please check " + "the drive and the cartridge loader."); return tape_34xx_erp_failed(request, -EIO); case 0x36: if (device->cdev->id.driver_info == tape_3490) @@ -603,7 +591,7 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, * Tape length error. The tape is shorter than reported in * the beginning-of-tape data. */ - PRINT_WARN("Tape length error.\n"); + dev_warn (&device->cdev->dev, "Tape length error."); return tape_34xx_erp_failed(request, -EIO); case 0x38: /* @@ -620,12 +608,14 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, return tape_34xx_erp_failed(request, -EIO); case 0x3a: /* Drive switched to not ready. */ - PRINT_WARN("Drive not ready. Turn the ready/not ready switch " - "to ready position and try again.\n"); + dev_warn (&device->cdev->dev, "Drive not ready. Turn the " + "ready/not ready switch to ready position and try " + "again."); return tape_34xx_erp_failed(request, -EIO); case 0x3b: /* Manual rewind or unload. This causes an I/O error. */ - PRINT_WARN("Medium was rewound or unloaded manually.\n"); + dev_warn (&device->cdev->dev, "Medium was rewound or unloaded" + " manually."); tape_34xx_delete_sbid_from(device, 0); return tape_34xx_erp_failed(request, -EIO); case 0x42: @@ -633,7 +623,8 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, * Degraded mode. A condition that can cause degraded * performance is detected. */ - PRINT_WARN("Subsystem is running in degraded mode.\n"); + dev_warn (&device->cdev->dev, "Subsystem is running in " + "degraded mode."); return tape_34xx_erp_retry(request); case 0x43: /* Drive not ready. */ @@ -652,7 +643,6 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, break; } } - PRINT_WARN("The drive is not ready.\n"); return tape_34xx_erp_failed(request, -ENOMEDIUM); case 0x44: /* Locate Block unsuccessful. */ @@ -663,7 +653,8 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, return tape_34xx_erp_failed(request, -EIO); case 0x45: /* The drive is assigned to a different channel path. */ - PRINT_WARN("The drive is assigned elsewhere.\n"); + dev_warn (&device->cdev->dev, "The drive is assigned " + "elsewhere."); return tape_34xx_erp_failed(request, -EIO); case 0x46: /* @@ -671,11 +662,12 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, * the power supply may be switched off or * the drive address may not be set correctly. */ - PRINT_WARN("The drive is not on-line."); + dev_warn (&device->cdev->dev, "The drive is not on-line."); return tape_34xx_erp_failed(request, -EIO); case 0x47: /* Volume fenced. CU reports volume integrity is lost. */ - PRINT_WARN("Volume fenced. The volume integrity is lost.\n"); + dev_warn (&device->cdev->dev, "Volume fenced. The volume " + "integrity is lost."); tape_34xx_delete_sbid_from(device, 0); return tape_34xx_erp_failed(request, -EIO); case 0x48: @@ -683,20 +675,21 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, return tape_34xx_erp_retry(request); case 0x49: /* Bus out check. A parity check error on the bus was found. */ - PRINT_WARN("Bus out check. A data transfer over the bus " - "has been corrupted.\n"); + dev_warn (&device->cdev->dev, "Bus out check. A data transfer" + "over the bus has been corrupted."); return tape_34xx_erp_failed(request, -EIO); case 0x4a: /* Control unit erp failed. */ - PRINT_WARN("The control unit I/O error recovery failed.\n"); + dev_warn (&device->cdev->dev, "The control unit I/O error " + "recovery failed."); return tape_34xx_erp_failed(request, -EIO); case 0x4b: /* * CU and drive incompatible. The drive requests micro-program * patches, which are not available on the CU. */ - PRINT_WARN("The drive needs microprogram patches from the " - "control unit, which are not available.\n"); + dev_warn (&device->cdev->dev, "The drive needs microprogram " + "patches from the control unit, which are not available."); return tape_34xx_erp_failed(request, -EIO); case 0x4c: /* @@ -721,8 +714,8 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, * the block to be written is larger than allowed for * buffered mode. */ - PRINT_WARN("Maximum block size for buffered " - "mode exceeded.\n"); + dev_warn (&device->cdev->dev, "Maximum block size for" + " buffered mode exceeded."); return tape_34xx_erp_failed(request, -ENOBUFS); } /* This erpa is reserved for 3480. */ @@ -759,22 +752,20 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, return tape_34xx_erp_retry(request); case 0x55: /* Channel interface recovery (permanent). */ - PRINT_WARN("A permanent channel interface error occurred.\n"); + dev_warn (&device->cdev->dev, "A permanent channel interface " + "error occurred."); return tape_34xx_erp_failed(request, -EIO); case 0x56: /* Channel protocol error. */ - PRINT_WARN("A channel protocol error occurred.\n"); + dev_warn (&device->cdev->dev, "A channel protocol error " + "occurred."); return tape_34xx_erp_failed(request, -EIO); case 0x57: if (device->cdev->id.driver_info == tape_3480) { /* Attention intercept. */ - PRINT_WARN("An attention intercept occurred, " - "which will be recovered.\n"); return tape_34xx_erp_retry(request); } else { /* Global status intercept. */ - PRINT_WARN("An global status intercept was received, " - "which will be recovered.\n"); return tape_34xx_erp_retry(request); } case 0x5a: @@ -782,42 +773,27 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request, * Tape length incompatible. The tape inserted is too long, * which could cause damage to the tape or the drive. */ - PRINT_WARN("Tape Length Incompatible\n"); - PRINT_WARN("Tape length exceeds IBM enhanced capacity " - "cartdridge length or a medium\n"); - PRINT_WARN("with EC-CST identification mark has been mounted " - "in a device that writes\n"); - PRINT_WARN("3480 or 3480 XF format.\n"); + dev_warn (&device->cdev->dev, "Tape Length Incompatible"); return tape_34xx_erp_failed(request, -EIO); case 0x5b: /* Format 3480 XF incompatible */ if (sense[1] & SENSE_BEGINNING_OF_TAPE) /* The tape will get overwritten. */ return tape_34xx_erp_retry(request); - PRINT_WARN("Format 3480 XF Incompatible\n"); - PRINT_WARN("Medium has been created in 3480 format. " - "To change the format writes\n"); - PRINT_WARN("must be issued at BOT.\n"); + dev_warn (&device->cdev->dev, "Format 3480 XF Incompatible"); return tape_34xx_erp_failed(request, -EIO); case 0x5c: /* Format 3480-2 XF incompatible */ - PRINT_WARN("Format 3480-2 XF Incompatible\n"); - PRINT_WARN("Device can only read 3480 or 3480 XF format.\n"); + dev_warn (&device->cdev->dev, "Format 3480-2 XF Incompatible"); return tape_34xx_erp_failed(request, -EIO); case 0x5d: /* Tape length violation. */ - PRINT_WARN("Tape Length Violation\n"); - PRINT_WARN("The mounted tape exceeds IBM Enhanced Capacity " - "Cartdridge System Tape length.\n"); - PRINT_WARN("This may cause damage to the drive or tape when " - "processing to the EOV\n"); + dev_warn (&device->cdev->dev, "Tape Length Violation"); return tape_34xx_erp_failed(request, -EMEDIUMTYPE); case 0x5e: /* Compaction algorithm incompatible. */ - PRINT_WARN("Compaction Algorithm Incompatible\n"); - PRINT_WARN("The volume is recorded using an incompatible " - "compaction algorithm,\n"); - PRINT_WARN("which is not supported by the device.\n"); + dev_warn (&device->cdev->dev, "Compaction Algorithm " + "Incompatible"); return tape_34xx_erp_failed(request, -EMEDIUMTYPE); /* The following erpas should have been covered earlier. */ @@ -848,7 +824,6 @@ tape_34xx_irq(struct tape_device *device, struct tape_request *request, (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) && (request->op == TO_WRI)) { /* Write at end of volume */ - PRINT_INFO("End of volume\n"); /* XXX */ return tape_34xx_erp_failed(request, -ENOSPC); } @@ -869,9 +844,7 @@ tape_34xx_irq(struct tape_device *device, struct tape_request *request, } DBF_EVENT(6, "xunknownirq\n"); - PRINT_ERR("Unexpected interrupt.\n"); - PRINT_ERR("Current op is: %s", tape_op_verbose[request->op]); - tape_dump_sense(device, request, irb); + tape_dump_sense_dbf(device, request, irb); return TAPE_IO_STOP; } diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c index 4005c44a404c..77e9e430a1b8 100644 --- a/drivers/s390/char/tape_3590.c +++ b/drivers/s390/char/tape_3590.c @@ -8,12 +8,15 @@ * Martin Schwidefsky <schwidefsky@de.ibm.com> */ +#define KMSG_COMPONENT "tape" + #include <linux/module.h> #include <linux/init.h> #include <linux/bio.h> #include <asm/ebcdic.h> #define TAPE_DBF_AREA tape_3590_dbf +#define BUFSIZE 512 /* size of buffers for dynamic generated messages */ #include "tape.h" #include "tape_std.h" @@ -36,7 +39,7 @@ EXPORT_SYMBOL(TAPE_DBF_AREA); * - Read Alternate: implemented *******************************************************************/ -#define PRINTK_HEADER "TAPE_3590: " +#define KMSG_COMPONENT "tape" static const char *tape_3590_msg[TAPE_3590_MAX_MSG] = { [0x00] = "", @@ -726,7 +729,7 @@ static void tape_3590_med_state_set(struct tape_device *device, } c_info->medium_status |= TAPE390_MEDIUM_LOADED_MASK; if (sense->flags & MSENSE_CRYPT_MASK) { - PRINT_INFO("Medium is encrypted (%04x)\n", sense->flags); + DBF_EVENT(6, "Medium is encrypted (%04x)\n", sense->flags); c_info->medium_status |= TAPE390_MEDIUM_ENCRYPTED_MASK; } else { DBF_EVENT(6, "Medium is not encrypted %04x\n", sense->flags); @@ -847,8 +850,7 @@ tape_3590_unsolicited_irq(struct tape_device *device, struct irb *irb) tape_3590_schedule_work(device, TO_READ_ATTMSG); } else { DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id); - PRINT_WARN("Unsolicited IRQ (Device End) caught.\n"); - tape_dump_sense(device, NULL, irb); + tape_dump_sense_dbf(device, NULL, irb); } /* check medium state */ tape_3590_schedule_work(device, TO_MSEN); @@ -876,8 +878,6 @@ tape_3590_erp_basic(struct tape_device *device, struct tape_request *request, case SENSE_BRA_DRE: return tape_3590_erp_failed(device, request, irb, rc); default: - PRINT_ERR("Unknown BRA %x - This should not happen!\n", - sense->bra); BUG(); return TAPE_IO_STOP; } @@ -910,7 +910,7 @@ tape_3590_erp_swap(struct tape_device *device, struct tape_request *request, * should proceed with the new tape... this * should probably be done in user space! */ - PRINT_WARN("(%s): Swap Tape Device!\n", dev_name(&device->cdev->dev)); + dev_warn (&device->cdev->dev, "Swap Tape Device!"); return tape_3590_erp_basic(device, request, irb, -EIO); } @@ -985,8 +985,6 @@ tape_3590_erp_read_opposite(struct tape_device *device, return tape_3590_erp_failed(device, request, irb, -EIO); break; default: - PRINT_WARN("read_opposite_recovery_called_with_op: %s\n", - tape_op_verbose[request->op]); return tape_3590_erp_failed(device, request, irb, -EIO); } } @@ -998,50 +996,61 @@ static void tape_3590_print_mim_msg_f0(struct tape_device *device, struct irb *irb) { struct tape_3590_sense *sense; + char *exception, *service; + + exception = kmalloc(BUFSIZE, GFP_ATOMIC); + service = kmalloc(BUFSIZE, GFP_ATOMIC); + + if (!exception || !service) + goto out_nomem; sense = (struct tape_3590_sense *) irb->ecw; /* Exception Message */ switch (sense->fmt.f70.emc) { case 0x02: - PRINT_WARN("(%s): Data degraded\n", - dev_name(&device->cdev->dev)); + snprintf(exception, BUFSIZE, "Data degraded"); break; case 0x03: - PRINT_WARN("(%s): Data degraded in partion %i\n", - dev_name(&device->cdev->dev), sense->fmt.f70.mp); + snprintf(exception, BUFSIZE, "Data degraded in partion %i", + sense->fmt.f70.mp); break; case 0x04: - PRINT_WARN("(%s): Medium degraded\n", - dev_name(&device->cdev->dev)); + snprintf(exception, BUFSIZE, "Medium degraded"); break; case 0x05: - PRINT_WARN("(%s): Medium degraded in partition %i\n", - dev_name(&device->cdev->dev), sense->fmt.f70.mp); + snprintf(exception, BUFSIZE, "Medium degraded in partition %i", + sense->fmt.f70.mp); break; case 0x06: - PRINT_WARN("(%s): Block 0 Error\n", - dev_name(&device->cdev->dev)); + snprintf(exception, BUFSIZE, "Block 0 Error"); break; case 0x07: - PRINT_WARN("(%s): Medium Exception 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f70.md); + snprintf(exception, BUFSIZE, "Medium Exception 0x%02x", + sense->fmt.f70.md); break; default: - PRINT_WARN("(%s): MIM ExMsg: 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f70.emc); + snprintf(exception, BUFSIZE, "0x%02x", + sense->fmt.f70.emc); break; } /* Service Message */ switch (sense->fmt.f70.smc) { case 0x02: - PRINT_WARN("(%s): Reference Media maintenance procedure %i\n", - dev_name(&device->cdev->dev), sense->fmt.f70.md); + snprintf(service, BUFSIZE, "Reference Media maintenance " + "procedure %i", sense->fmt.f70.md); break; default: - PRINT_WARN("(%s): MIM ServiceMsg: 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f70.smc); + snprintf(service, BUFSIZE, "0x%02x", + sense->fmt.f70.smc); break; } + + dev_warn (&device->cdev->dev, "Media information: exception %s, " + "service %s", exception, service); + +out_nomem: + kfree(exception); + kfree(service); } /* @@ -1051,108 +1060,108 @@ static void tape_3590_print_io_sim_msg_f1(struct tape_device *device, struct irb *irb) { struct tape_3590_sense *sense; + char *exception, *service; + + exception = kmalloc(BUFSIZE, GFP_ATOMIC); + service = kmalloc(BUFSIZE, GFP_ATOMIC); + + if (!exception || !service) + goto out_nomem; sense = (struct tape_3590_sense *) irb->ecw; /* Exception Message */ switch (sense->fmt.f71.emc) { case 0x01: - PRINT_WARN("(%s): Effect of failure is unknown\n", - dev_name(&device->cdev->dev)); + snprintf(exception, BUFSIZE, "Effect of failure is unknown"); break; case 0x02: - PRINT_WARN("(%s): CU Exception - no performance impact\n", - dev_name(&device->cdev->dev)); + snprintf(exception, BUFSIZE, "CU Exception - no performance " + "impact"); break; case 0x03: - PRINT_WARN("(%s): CU Exception on channel interface 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); + snprintf(exception, BUFSIZE, "CU Exception on channel " + "interface 0x%02x", sense->fmt.f71.md[0]); break; case 0x04: - PRINT_WARN("(%s): CU Exception on device path 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); + snprintf(exception, BUFSIZE, "CU Exception on device path " + "0x%02x", sense->fmt.f71.md[0]); break; case 0x05: - PRINT_WARN("(%s): CU Exception on library path 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); + snprintf(exception, BUFSIZE, "CU Exception on library path " + "0x%02x", sense->fmt.f71.md[0]); break; case 0x06: - PRINT_WARN("(%s): CU Exception on node 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); + snprintf(exception, BUFSIZE, "CU Exception on node 0x%02x", + sense->fmt.f71.md[0]); break; case 0x07: - PRINT_WARN("(%s): CU Exception on partition 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); + snprintf(exception, BUFSIZE, "CU Exception on partition " + "0x%02x", sense->fmt.f71.md[0]); break; default: - PRINT_WARN("(%s): SIM ExMsg: 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.emc); + snprintf(exception, BUFSIZE, "0x%02x", + sense->fmt.f71.emc); } /* Service Message */ switch (sense->fmt.f71.smc) { case 0x01: - PRINT_WARN("(%s): Repair impact is unknown\n", - dev_name(&device->cdev->dev)); + snprintf(service, BUFSIZE, "Repair impact is unknown"); break; case 0x02: - PRINT_WARN("(%s): Repair will not impact cu performance\n", - dev_name(&device->cdev->dev)); + snprintf(service, BUFSIZE, "Repair will not impact cu " + "performance"); break; case 0x03: if (sense->fmt.f71.mdf == 0) - PRINT_WARN("(%s): Repair will disable node " - "0x%x on CU\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1]); + snprintf(service, BUFSIZE, "Repair will disable node " + "0x%x on CU", sense->fmt.f71.md[1]); else - PRINT_WARN("(%s): Repair will disable nodes " - "(0x%x-0x%x) on CU\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1], sense->fmt.f71.md[2]); + snprintf(service, BUFSIZE, "Repair will disable " + "nodes (0x%x-0x%x) on CU", sense->fmt.f71.md[1], + sense->fmt.f71.md[2]); break; case 0x04: if (sense->fmt.f71.mdf == 0) - PRINT_WARN("(%s): Repair will disable cannel path " - "0x%x on CU\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1]); + snprintf(service, BUFSIZE, "Repair will disable " + "channel path 0x%x on CU", + sense->fmt.f71.md[1]); else - PRINT_WARN("(%s): Repair will disable cannel paths " - "(0x%x-0x%x) on CU\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1], sense->fmt.f71.md[2]); + snprintf(service, BUFSIZE, "Repair will disable cannel" + " paths (0x%x-0x%x) on CU", + sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x05: if (sense->fmt.f71.mdf == 0) - PRINT_WARN("(%s): Repair will disable device path " - "0x%x on CU\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1]); + snprintf(service, BUFSIZE, "Repair will disable device" + " path 0x%x on CU", sense->fmt.f71.md[1]); else - PRINT_WARN("(%s): Repair will disable device paths " - "(0x%x-0x%x) on CU\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1], sense->fmt.f71.md[2]); + snprintf(service, BUFSIZE, "Repair will disable device" + " paths (0x%x-0x%x) on CU", + sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x06: if (sense->fmt.f71.mdf == 0) - PRINT_WARN("(%s): Repair will disable library path " - "0x%x on CU\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1]); + snprintf(service, BUFSIZE, "Repair will disable " + "library path 0x%x on CU", + sense->fmt.f71.md[1]); else - PRINT_WARN("(%s): Repair will disable library paths " - "(0x%x-0x%x) on CU\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1], sense->fmt.f71.md[2]); + snprintf(service, BUFSIZE, "Repair will disable " + "library paths (0x%x-0x%x) on CU", + sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x07: - PRINT_WARN("(%s): Repair will disable access to CU\n", - dev_name(&device->cdev->dev)); + snprintf(service, BUFSIZE, "Repair will disable access to CU"); break; default: - PRINT_WARN("(%s): SIM ServiceMsg: 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.smc); + snprintf(service, BUFSIZE, "0x%02x", + sense->fmt.f71.smc); } + + dev_warn (&device->cdev->dev, "I/O subsystem information: exception" + " %s, service %s", exception, service); +out_nomem: + kfree(exception); + kfree(service); } /* @@ -1162,111 +1171,109 @@ static void tape_3590_print_dev_sim_msg_f2(struct tape_device *device, struct irb *irb) { struct tape_3590_sense *sense; + char *exception, *service; + + exception = kmalloc(BUFSIZE, GFP_ATOMIC); + service = kmalloc(BUFSIZE, GFP_ATOMIC); + + if (!exception || !service) + goto out_nomem; sense = (struct tape_3590_sense *) irb->ecw; /* Exception Message */ switch (sense->fmt.f71.emc) { case 0x01: - PRINT_WARN("(%s): Effect of failure is unknown\n", - dev_name(&device->cdev->dev)); + snprintf(exception, BUFSIZE, "Effect of failure is unknown"); break; case 0x02: - PRINT_WARN("(%s): DV Exception - no performance impact\n", - dev_name(&device->cdev->dev)); + snprintf(exception, BUFSIZE, "DV Exception - no performance" + " impact"); break; case 0x03: - PRINT_WARN("(%s): DV Exception on channel interface 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); + snprintf(exception, BUFSIZE, "DV Exception on channel " + "interface 0x%02x", sense->fmt.f71.md[0]); break; case 0x04: - PRINT_WARN("(%s): DV Exception on loader 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); + snprintf(exception, BUFSIZE, "DV Exception on loader 0x%02x", + sense->fmt.f71.md[0]); break; case 0x05: - PRINT_WARN("(%s): DV Exception on message display 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); + snprintf(exception, BUFSIZE, "DV Exception on message display" + " 0x%02x", sense->fmt.f71.md[0]); break; case 0x06: - PRINT_WARN("(%s): DV Exception in tape path\n", - dev_name(&device->cdev->dev)); + snprintf(exception, BUFSIZE, "DV Exception in tape path"); break; case 0x07: - PRINT_WARN("(%s): DV Exception in drive\n", - dev_name(&device->cdev->dev)); + snprintf(exception, BUFSIZE, "DV Exception in drive"); break; default: - PRINT_WARN("(%s): DSIM ExMsg: 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.emc); + snprintf(exception, BUFSIZE, "0x%02x", + sense->fmt.f71.emc); } /* Service Message */ switch (sense->fmt.f71.smc) { case 0x01: - PRINT_WARN("(%s): Repair impact is unknown\n", - dev_name(&device->cdev->dev)); + snprintf(service, BUFSIZE, "Repair impact is unknown"); break; case 0x02: - PRINT_WARN("(%s): Repair will not impact device performance\n", - dev_name(&device->cdev->dev)); + snprintf(service, BUFSIZE, "Repair will not impact device " + "performance"); break; case 0x03: if (sense->fmt.f71.mdf == 0) - PRINT_WARN("(%s): Repair will disable channel path " - "0x%x on DV\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1]); + snprintf(service, BUFSIZE, "Repair will disable " + "channel path 0x%x on DV", + sense->fmt.f71.md[1]); else - PRINT_WARN("(%s): Repair will disable channel path " - "(0x%x-0x%x) on DV\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1], sense->fmt.f71.md[2]); + snprintf(service, BUFSIZE, "Repair will disable " + "channel path (0x%x-0x%x) on DV", + sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x04: if (sense->fmt.f71.mdf == 0) - PRINT_WARN("(%s): Repair will disable interface 0x%x " - "on DV\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1]); + snprintf(service, BUFSIZE, "Repair will disable " + "interface 0x%x on DV", sense->fmt.f71.md[1]); else - PRINT_WARN("(%s): Repair will disable interfaces " - "(0x%x-0x%x) on DV\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1], sense->fmt.f71.md[2]); + snprintf(service, BUFSIZE, "Repair will disable " + "interfaces (0x%x-0x%x) on DV", + sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x05: if (sense->fmt.f71.mdf == 0) - PRINT_WARN("(%s): Repair will disable loader 0x%x " - "on DV\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1]); + snprintf(service, BUFSIZE, "Repair will disable loader" + " 0x%x on DV", sense->fmt.f71.md[1]); else - PRINT_WARN("(%s): Repair will disable loader " - "(0x%x-0x%x) on DV\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1], sense->fmt.f71.md[2]); + snprintf(service, BUFSIZE, "Repair will disable loader" + " (0x%x-0x%x) on DV", + sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x07: - PRINT_WARN("(%s): Repair will disable access to DV\n", - dev_name(&device->cdev->dev)); + snprintf(service, BUFSIZE, "Repair will disable access to DV"); break; case 0x08: if (sense->fmt.f71.mdf == 0) - PRINT_WARN("(%s): Repair will disable message " - "display 0x%x on DV\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1]); + snprintf(service, BUFSIZE, "Repair will disable " + "message display 0x%x on DV", + sense->fmt.f71.md[1]); else - PRINT_WARN("(%s): Repair will disable message " - "displays (0x%x-0x%x) on DV\n", - dev_name(&device->cdev->dev), - sense->fmt.f71.md[1], sense->fmt.f71.md[2]); + snprintf(service, BUFSIZE, "Repair will disable " + "message displays (0x%x-0x%x) on DV", + sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x09: - PRINT_WARN("(%s): Clean DV\n", dev_name(&device->cdev->dev)); + snprintf(service, BUFSIZE, "Clean DV"); break; default: - PRINT_WARN("(%s): DSIM ServiceMsg: 0x%02x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.smc); + snprintf(service, BUFSIZE, "0x%02x", + sense->fmt.f71.smc); } + + dev_warn (&device->cdev->dev, "Device subsystem information: exception" + " %s, service %s", exception, service); +out_nomem: + kfree(exception); + kfree(service); } /* @@ -1282,46 +1289,42 @@ tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) return; if ((sense->mc > 0) && (sense->mc < TAPE_3590_MAX_MSG)) { if (tape_3590_msg[sense->mc] != NULL) - PRINT_WARN("(%s): %s\n", dev_name(&device->cdev->dev), - tape_3590_msg[sense->mc]); - else { - PRINT_WARN("(%s): Message Code 0x%x\n", - dev_name(&device->cdev->dev), sense->mc); - } + dev_warn (&device->cdev->dev, "Tape sense message: %s", + tape_3590_msg[sense->mc]); + else + dev_warn (&device->cdev->dev, "Tape sense message code" + " 0x%x", sense->mc); return; } if (sense->mc == 0xf0) { /* Standard Media Information Message */ - PRINT_WARN("(%s): MIM SEV=%i, MC=%02x, ES=%x/%x, " - "RC=%02x-%04x-%02x\n", dev_name(&device->cdev->dev), - sense->fmt.f70.sev, sense->mc, - sense->fmt.f70.emc, sense->fmt.f70.smc, - sense->fmt.f70.refcode, sense->fmt.f70.mid, - sense->fmt.f70.fid); + dev_warn (&device->cdev->dev, "MIM SEV=%i, MC=%02x, ES=%x/%x, " + "RC=%02x-%04x-%02x", sense->fmt.f70.sev, sense->mc, + sense->fmt.f70.emc, sense->fmt.f70.smc, + sense->fmt.f70.refcode, sense->fmt.f70.mid, + sense->fmt.f70.fid); tape_3590_print_mim_msg_f0(device, irb); return; } if (sense->mc == 0xf1) { /* Standard I/O Subsystem Service Information Message */ - PRINT_WARN("(%s): IOSIM SEV=%i, DEVTYPE=3590/%02x, " - "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.sev, - device->cdev->id.dev_model, - sense->mc, sense->fmt.f71.emc, - sense->fmt.f71.smc, sense->fmt.f71.refcode1, - sense->fmt.f71.refcode2, sense->fmt.f71.refcode3); + dev_warn (&device->cdev->dev, "IOSIM SEV=%i, DEVTYPE=3590/%02x," + " MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x", + sense->fmt.f71.sev, device->cdev->id.dev_model, + sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, + sense->fmt.f71.refcode1, sense->fmt.f71.refcode2, + sense->fmt.f71.refcode3); tape_3590_print_io_sim_msg_f1(device, irb); return; } if (sense->mc == 0xf2) { /* Standard Device Service Information Message */ - PRINT_WARN("(%s): DEVSIM SEV=%i, DEVTYPE=3590/%02x, " - "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", - dev_name(&device->cdev->dev), sense->fmt.f71.sev, - device->cdev->id.dev_model, - sense->mc, sense->fmt.f71.emc, - sense->fmt.f71.smc, sense->fmt.f71.refcode1, - sense->fmt.f71.refcode2, sense->fmt.f71.refcode3); + dev_warn (&device->cdev->dev, "DEVSIM SEV=%i, DEVTYPE=3590/%02x" + ", MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x", + sense->fmt.f71.sev, device->cdev->id.dev_model, + sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, + sense->fmt.f71.refcode1, sense->fmt.f71.refcode2, + sense->fmt.f71.refcode3); tape_3590_print_dev_sim_msg_f2(device, irb); return; } @@ -1329,8 +1332,7 @@ tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) /* Standard Library Service Information Message */ return; } - PRINT_WARN("(%s): Device Message(%x)\n", - dev_name(&device->cdev->dev), sense->mc); + dev_warn (&device->cdev->dev, "Device Message(%x)", sense->mc); } static int tape_3590_crypt_error(struct tape_device *device, @@ -1355,9 +1357,7 @@ static int tape_3590_crypt_error(struct tape_device *device, /* No connection to EKM */ return tape_3590_erp_basic(device, request, irb, -ENOTCONN); - PRINT_ERR("(%s): Unable to get encryption key from EKM\n", bus_id); - PRINT_ERR("(%s): CU=%02X DRIVE=%06X EKM=%02X:%04X\n", bus_id, cu_rc, - drv_rc, ekm_rc1, ekm_rc2); + dev_err (&device->cdev->dev, "Unable to get encryption key from EKM"); return tape_3590_erp_basic(device, request, irb, -ENOKEY); } @@ -1443,8 +1443,6 @@ tape_3590_unit_check(struct tape_device *device, struct tape_request *request, * print additional msg since default msg * "device intervention" is not very meaningfull */ - PRINT_WARN("(%s): Tape operation when medium not loaded\n", - dev_name(&device->cdev->dev)); tape_med_state_set(device, MS_UNLOADED); tape_3590_schedule_work(device, TO_CRYPT_OFF); return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); @@ -1490,19 +1488,14 @@ tape_3590_unit_check(struct tape_device *device, struct tape_request *request, return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); case 0x6020: - PRINT_WARN("(%s): Cartridge of wrong type ?\n", - dev_name(&device->cdev->dev)); return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); case 0x8011: - PRINT_WARN("(%s): Another host has reserved the tape device\n", - dev_name(&device->cdev->dev)); return tape_3590_erp_basic(device, request, irb, -EPERM); case 0x8013: - PRINT_WARN("(%s): Another host has privileged access to the " - "tape device\n", dev_name(&device->cdev->dev)); - PRINT_WARN("(%s): To solve the problem unload the current " - "cartridge!\n", dev_name(&device->cdev->dev)); + dev_warn (&device->cdev->dev, "Another host has privileged " + "access to the tape device, To solve the problem " + "unload the current cartridge!"); return tape_3590_erp_basic(device, request, irb, -EPERM); default: return tape_3590_erp_basic(device, request, irb, -EIO); @@ -1552,9 +1545,7 @@ tape_3590_irq(struct tape_device *device, struct tape_request *request, } DBF_EVENT(6, "xunknownirq\n"); - PRINT_ERR("Unexpected interrupt.\n"); - PRINT_ERR("Current op is: %s", tape_op_verbose[request->op]); - tape_dump_sense(device, request, irb); + tape_dump_sense_dbf(device, request, irb); return TAPE_IO_STOP; } @@ -1609,7 +1600,6 @@ tape_3590_setup_device(struct tape_device *device) if (rc) goto fail_rdc_data; if (rdc_data->data[31] == 0x13) { - PRINT_INFO("Device has crypto support\n"); data->crypt_info.capability |= TAPE390_CRYPT_SUPPORTED_MASK; tape_3592_disable_crypt(device); } else { diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c index ae18baf59f06..feb23be5ce53 100644 --- a/drivers/s390/char/tape_block.c +++ b/drivers/s390/char/tape_block.c @@ -10,6 +10,8 @@ * Stefan Bader <shbader@de.ibm.com> */ +#define KMSG_COMPONENT "tape_block" + #include <linux/fs.h> #include <linux/module.h> #include <linux/blkdev.h> @@ -23,8 +25,6 @@ #include "tape.h" -#define PRINTK_HEADER "TAPE_BLOCK: " - #define TAPEBLOCK_MAX_SEC 100 #define TAPEBLOCK_MIN_REQUEUE 3 @@ -279,8 +279,6 @@ tapeblock_cleanup_device(struct tape_device *device) tape_put_device(device); if (!device->blk_data.disk) { - PRINT_ERR("(%s): No gendisk to clean up!\n", - dev_name(&device->cdev->dev)); goto cleanup_queue; } @@ -314,7 +312,7 @@ tapeblock_revalidate_disk(struct gendisk *disk) if (!device->blk_data.medium_changed) return 0; - PRINT_INFO("Detecting media size...\n"); + dev_info(&device->cdev->dev, "Detecting media size..."); rc = tape_mtop(device, MTFSFM, 1); if (rc) return rc; @@ -341,7 +339,8 @@ tapeblock_revalidate_disk(struct gendisk *disk) device->bof = rc; nr_of_blks -= rc; - PRINT_INFO("Found %i blocks on media\n", nr_of_blks); + dev_info(&device->cdev->dev, "Found %i blocks on media", + nr_of_blks); set_capacity(device->blk_data.disk, nr_of_blks*(TAPEBLOCK_HSEC_SIZE/512)); @@ -376,8 +375,8 @@ tapeblock_open(struct block_device *bdev, fmode_t mode) if (device->required_tapemarks) { DBF_EVENT(2, "TBLOCK: missing tapemarks\n"); - PRINT_ERR("TBLOCK: Refusing to open tape with missing" - " end of file marks.\n"); + dev_warn(&device->cdev->dev, "Refusing to open tape with" + " missing end of file marks."); rc = -EPERM; goto put_device; } @@ -452,7 +451,6 @@ tapeblock_ioctl( rc = -EINVAL; break; default: - PRINT_WARN("invalid ioctl 0x%x\n", command); rc = -EINVAL; } @@ -474,7 +472,6 @@ tapeblock_init(void) if (tapeblock_major == 0) tapeblock_major = rc; - PRINT_INFO("tape gets major %d for block device\n", tapeblock_major); return 0; } diff --git a/drivers/s390/char/tape_char.c b/drivers/s390/char/tape_char.c index be0ce2215c8d..31566c55adfe 100644 --- a/drivers/s390/char/tape_char.c +++ b/drivers/s390/char/tape_char.c @@ -24,8 +24,6 @@ #include "tape_std.h" #include "tape_class.h" -#define PRINTK_HEADER "TAPE_CHAR: " - #define TAPECHAR_MAJOR 0 /* get dynamic major */ /* @@ -102,8 +100,6 @@ tapechar_check_idalbuffer(struct tape_device *device, size_t block_size) if (block_size > MAX_BLOCKSIZE) { DBF_EVENT(3, "Invalid blocksize (%zd > %d)\n", block_size, MAX_BLOCKSIZE); - PRINT_ERR("Invalid blocksize (%zd> %d)\n", - block_size, MAX_BLOCKSIZE); return -EINVAL; } @@ -485,7 +481,6 @@ tapechar_init (void) return -1; tapechar_major = MAJOR(dev); - PRINT_INFO("tape gets major %d for character devices\n", MAJOR(dev)); return 0; } @@ -496,7 +491,5 @@ tapechar_init (void) void tapechar_exit(void) { - PRINT_INFO("tape releases major %d for character devices\n", - tapechar_major); unregister_chrdev_region(MKDEV(tapechar_major, 0), 256); } diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c index f9bb51fa7f5b..e00a6a61bba8 100644 --- a/drivers/s390/char/tape_core.c +++ b/drivers/s390/char/tape_core.c @@ -11,6 +11,7 @@ * Stefan Bader <shbader@de.ibm.com> */ +#define KMSG_COMPONENT "tape" #include <linux/module.h> #include <linux/init.h> // for kernel parameters #include <linux/kmod.h> // for requesting modules @@ -25,7 +26,6 @@ #include "tape.h" #include "tape_std.h" -#define PRINTK_HEADER "TAPE_CORE: " #define LONG_BUSY_TIMEOUT 180 /* seconds */ static void __tape_do_irq (struct ccw_device *, unsigned long, struct irb *); @@ -214,13 +214,11 @@ tape_med_state_set(struct tape_device *device, enum tape_medium_state newstate) switch(newstate){ case MS_UNLOADED: device->tape_generic_status |= GMT_DR_OPEN(~0); - PRINT_INFO("(%s): Tape is unloaded\n", - dev_name(&device->cdev->dev)); + dev_info(&device->cdev->dev, "Tape is unloaded"); break; case MS_LOADED: device->tape_generic_status &= ~GMT_DR_OPEN(~0); - PRINT_INFO("(%s): Tape has been mounted\n", - dev_name(&device->cdev->dev)); + dev_info(&device->cdev->dev, "Tape has been mounted"); break; default: // print nothing @@ -333,7 +331,6 @@ tape_generic_online(struct tape_device *device, /* Let the discipline have a go at the device. */ device->discipline = discipline; if (!try_module_get(discipline->owner)) { - PRINT_ERR("Cannot get module. Module gone.\n"); return -EINVAL; } @@ -391,7 +388,6 @@ int tape_generic_offline(struct tape_device *device) { if (!device) { - PRINT_ERR("tape_generic_offline: no such device\n"); return -ENODEV; } @@ -413,9 +409,6 @@ tape_generic_offline(struct tape_device *device) DBF_EVENT(3, "(%08x): Set offline failed " "- drive in use.\n", device->cdev_id); - PRINT_WARN("(%s): Set offline failed " - "- drive in use.\n", - dev_name(&device->cdev->dev)); spin_unlock_irq(get_ccwdev_lock(device->cdev)); return -EBUSY; } @@ -435,14 +428,11 @@ tape_alloc_device(void) device = kzalloc(sizeof(struct tape_device), GFP_KERNEL); if (device == NULL) { DBF_EXCEPTION(2, "ti:no mem\n"); - PRINT_INFO ("can't allocate memory for " - "tape info structure\n"); return ERR_PTR(-ENOMEM); } device->modeset_byte = kmalloc(1, GFP_KERNEL | GFP_DMA); if (device->modeset_byte == NULL) { DBF_EXCEPTION(2, "ti:no mem\n"); - PRINT_INFO("can't allocate memory for modeset byte\n"); kfree(device); return ERR_PTR(-ENOMEM); } @@ -490,7 +480,6 @@ tape_put_device(struct tape_device *device) } else { if (remain < 0) { DBF_EVENT(4, "put device without reference\n"); - PRINT_ERR("put device without reference\n"); } else { DBF_EVENT(4, "tape_free_device(%p)\n", device); kfree(device->modeset_byte); @@ -538,8 +527,6 @@ tape_generic_probe(struct ccw_device *cdev) ret = sysfs_create_group(&cdev->dev.kobj, &tape_attr_group); if (ret) { tape_put_device(device); - PRINT_ERR("probe failed for tape device %s\n", - dev_name(&cdev->dev)); return ret; } cdev->dev.driver_data = device; @@ -547,7 +534,6 @@ tape_generic_probe(struct ccw_device *cdev) device->cdev = cdev; ccw_device_get_id(cdev, &dev_id); device->cdev_id = devid_to_int(&dev_id); - PRINT_INFO("tape device %s found\n", dev_name(&cdev->dev)); return ret; } @@ -584,7 +570,6 @@ tape_generic_remove(struct ccw_device *cdev) device = cdev->dev.driver_data; if (!device) { - PRINT_ERR("No device pointer in tape_generic_remove!\n"); return; } DBF_LH(3, "(%08x): tape_generic_remove(%p)\n", device->cdev_id, cdev); @@ -615,10 +600,8 @@ tape_generic_remove(struct ccw_device *cdev) */ DBF_EVENT(3, "(%08x): Drive in use vanished!\n", device->cdev_id); - PRINT_WARN("(%s): Drive in use vanished - " - "expect trouble!\n", - dev_name(&device->cdev->dev)); - PRINT_WARN("State was %i\n", device->tape_state); + dev_warn(&device->cdev->dev, "Drive in use vanished - " + "expect trouble!"); tape_state_set(device, TS_NOT_OPER); __tape_discard_requests(device); spin_unlock_irq(get_ccwdev_lock(device->cdev)); @@ -830,30 +813,6 @@ __tape_end_request( } /* - * Write sense data to console/dbf - */ -void -tape_dump_sense(struct tape_device* device, struct tape_request *request, - struct irb *irb) -{ - unsigned int *sptr; - - PRINT_INFO("-------------------------------------------------\n"); - PRINT_INFO("DSTAT : %02x CSTAT: %02x CPA: %04x\n", - irb->scsw.cmd.dstat, irb->scsw.cmd.cstat, irb->scsw.cmd.cpa); - PRINT_INFO("DEVICE: %s\n", dev_name(&device->cdev->dev)); - if (request != NULL) - PRINT_INFO("OP : %s\n", tape_op_verbose[request->op]); - - sptr = (unsigned int *) irb->ecw; - PRINT_INFO("Sense data: %08X %08X %08X %08X \n", - sptr[0], sptr[1], sptr[2], sptr[3]); - PRINT_INFO("Sense data: %08X %08X %08X %08X \n", - sptr[4], sptr[5], sptr[6], sptr[7]); - PRINT_INFO("--------------------------------------------------\n"); -} - -/* * Write sense data to dbf */ void @@ -1051,8 +1010,6 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb) device = (struct tape_device *) cdev->dev.driver_data; if (device == NULL) { - PRINT_ERR("could not get device structure for %s " - "in interrupt\n", dev_name(&cdev->dev)); return; } request = (struct tape_request *) intparm; @@ -1064,13 +1021,13 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb) /* FIXME: What to do with the request? */ switch (PTR_ERR(irb)) { case -ETIMEDOUT: - PRINT_WARN("(%s): Request timed out\n", + DBF_LH(1, "(%s): Request timed out\n", dev_name(&cdev->dev)); case -EIO: __tape_end_request(device, request, -EIO); break; default: - PRINT_ERR("(%s): Unexpected i/o error %li\n", + DBF_LH(1, "(%s): Unexpected i/o error %li\n", dev_name(&cdev->dev), PTR_ERR(irb)); } @@ -1182,8 +1139,6 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb) default: if (rc > 0) { DBF_EVENT(6, "xunknownrc\n"); - PRINT_ERR("Invalid return code from discipline " - "interrupt function.\n"); __tape_end_request(device, request, -EIO); } else { __tape_end_request(device, request, rc); @@ -1323,7 +1278,6 @@ EXPORT_SYMBOL(tape_state_set); EXPORT_SYMBOL(tape_med_state_set); EXPORT_SYMBOL(tape_alloc_request); EXPORT_SYMBOL(tape_free_request); -EXPORT_SYMBOL(tape_dump_sense); EXPORT_SYMBOL(tape_dump_sense_dbf); EXPORT_SYMBOL(tape_do_io); EXPORT_SYMBOL(tape_do_io_async); diff --git a/drivers/s390/char/tape_proc.c b/drivers/s390/char/tape_proc.c index 8a376af926a7..202f42132939 100644 --- a/drivers/s390/char/tape_proc.c +++ b/drivers/s390/char/tape_proc.c @@ -20,8 +20,6 @@ #include "tape.h" -#define PRINTK_HEADER "TAPE_PROC: " - static const char *tape_med_st_verbose[MS_SIZE] = { [MS_UNKNOWN] = "UNKNOWN ", @@ -128,7 +126,6 @@ tape_proc_init(void) proc_create("tapedevices", S_IFREG | S_IRUGO | S_IWUSR, NULL, &tape_proc_ops); if (tape_proc_devices == NULL) { - PRINT_WARN("tape: Cannot register procfs entry tapedevices\n"); return; } } diff --git a/drivers/s390/char/tape_std.c b/drivers/s390/char/tape_std.c index 5bd573d144d6..44dd0f80c847 100644 --- a/drivers/s390/char/tape_std.c +++ b/drivers/s390/char/tape_std.c @@ -26,8 +26,6 @@ #include "tape.h" #include "tape_std.h" -#define PRINTK_HEADER "TAPE_STD: " - /* * tape_std_assign */ @@ -46,9 +44,8 @@ tape_std_assign_timeout(unsigned long data) device->cdev_id); rc = tape_cancel_io(device, request); if(rc) - PRINT_ERR("(%s): Assign timeout: Cancel failed with rc = %i\n", + DBF_EVENT(3, "(%s): Assign timeout: Cancel failed with rc = %i\n", dev_name(&device->cdev->dev), rc); - } int @@ -82,8 +79,6 @@ tape_std_assign(struct tape_device *device) del_timer(&timeout); if (rc != 0) { - PRINT_WARN("%s: assign failed - device might be busy\n", - dev_name(&device->cdev->dev)); DBF_EVENT(3, "%08x: assign failed - device might be busy\n", device->cdev_id); } else { @@ -105,8 +100,6 @@ tape_std_unassign (struct tape_device *device) if (device->tape_state == TS_NOT_OPER) { DBF_EVENT(3, "(%08x): Can't unassign device\n", device->cdev_id); - PRINT_WARN("(%s): Can't unassign device - device gone\n", - dev_name(&device->cdev->dev)); return -EIO; } @@ -120,8 +113,6 @@ tape_std_unassign (struct tape_device *device) if ((rc = tape_do_io(device, request)) != 0) { DBF_EVENT(3, "%08x: Unassign failed\n", device->cdev_id); - PRINT_WARN("%s: Unassign failed\n", - dev_name(&device->cdev->dev)); } else { DBF_EVENT(3, "%08x: Tape unassigned\n", device->cdev_id); } @@ -242,8 +233,6 @@ tape_std_mtsetblk(struct tape_device *device, int count) if (count > MAX_BLOCKSIZE) { DBF_EVENT(3, "Invalid block size (%d > %d) given.\n", count, MAX_BLOCKSIZE); - PRINT_ERR("Invalid block size (%d > %d) given.\n", - count, MAX_BLOCKSIZE); return -EINVAL; } @@ -633,14 +622,6 @@ tape_std_mtcompression(struct tape_device *device, int mt_count) if (mt_count < 0 || mt_count > 1) { DBF_EXCEPTION(6, "xcom parm\n"); - if (*device->modeset_byte & 0x08) - PRINT_INFO("(%s) Compression is currently on\n", - dev_name(&device->cdev->dev)); - else - PRINT_INFO("(%s) Compression is currently off\n", - dev_name(&device->cdev->dev)); - PRINT_INFO("Use 1 to switch compression on, 0 to " - "switch it off\n"); return -EINVAL; } request = tape_alloc_request(2, 0); diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c index 09e7d9bf438b..a6087cec55b4 100644 --- a/drivers/s390/char/vmcp.c +++ b/drivers/s390/char/vmcp.c @@ -11,12 +11,14 @@ * The idea of this driver is based on cpint from Neale Ferguson and #CP in CMS */ +#define KMSG_COMPONENT "vmcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/fs.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/miscdevice.h> #include <linux/module.h> -#include <linux/smp_lock.h> #include <asm/cpcmd.h> #include <asm/debug.h> #include <asm/uaccess.h> @@ -26,8 +28,6 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Christian Borntraeger <borntraeger@de.ibm.com>"); MODULE_DESCRIPTION("z/VM CP interface"); -#define PRINTK_HEADER "vmcp: " - static debug_info_t *vmcp_debug; static int vmcp_open(struct inode *inode, struct file *file) @@ -41,13 +41,11 @@ static int vmcp_open(struct inode *inode, struct file *file) if (!session) return -ENOMEM; - lock_kernel(); session->bufsize = PAGE_SIZE; session->response = NULL; session->resp_size = 0; mutex_init(&session->mutex); file->private_data = session; - unlock_kernel(); return nonseekable_open(inode, file); } @@ -193,7 +191,8 @@ static int __init vmcp_init(void) int ret; if (!MACHINE_IS_VM) { - PRINT_WARN("z/VM CP interface is only available under z/VM\n"); + pr_warning("The z/VM CP interface device driver cannot be " + "loaded without z/VM\n"); return -ENODEV; } diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c index 24762727bc27..aabbeb909cc6 100644 --- a/drivers/s390/char/vmlogrdr.c +++ b/drivers/s390/char/vmlogrdr.c @@ -10,6 +10,10 @@ * Stefan Weinhuber <wein@de.ibm.com> * */ + +#define KMSG_COMPONENT "vmlogrdr" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/errno.h> @@ -28,8 +32,6 @@ #include <linux/smp_lock.h> #include <linux/string.h> - - MODULE_AUTHOR ("(C) 2004 IBM Corporation by Xenia Tkatschow (xenia@us.ibm.com)\n" " Stefan Weinhuber (wein@de.ibm.com)"); @@ -174,8 +176,7 @@ static void vmlogrdr_iucv_path_severed(struct iucv_path *path, u8 ipuser[16]) struct vmlogrdr_priv_t * logptr = path->private; u8 reason = (u8) ipuser[8]; - printk (KERN_ERR "vmlogrdr: connection severed with" - " reason %i\n", reason); + pr_err("vmlogrdr: connection severed with reason %i\n", reason); iucv_path_sever(path, NULL); kfree(path); @@ -333,8 +334,8 @@ static int vmlogrdr_open (struct inode *inode, struct file *filp) if (logptr->autorecording) { ret = vmlogrdr_recording(logptr,1,logptr->autopurge); if (ret) - printk (KERN_WARNING "vmlogrdr: failed to start " - "recording automatically\n"); + pr_warning("vmlogrdr: failed to start " + "recording automatically\n"); } /* create connection to the system service */ @@ -345,9 +346,9 @@ static int vmlogrdr_open (struct inode *inode, struct file *filp) logptr->system_service, NULL, NULL, logptr); if (connect_rc) { - printk (KERN_ERR "vmlogrdr: iucv connection to %s " - "failed with rc %i \n", logptr->system_service, - connect_rc); + pr_err("vmlogrdr: iucv connection to %s " + "failed with rc %i \n", + logptr->system_service, connect_rc); goto out_path; } @@ -388,8 +389,8 @@ static int vmlogrdr_release (struct inode *inode, struct file *filp) if (logptr->autorecording) { ret = vmlogrdr_recording(logptr,0,logptr->autopurge); if (ret) - printk (KERN_WARNING "vmlogrdr: failed to stop " - "recording automatically\n"); + pr_warning("vmlogrdr: failed to stop " + "recording automatically\n"); } logptr->dev_in_use = 0; @@ -823,8 +824,7 @@ static int __init vmlogrdr_init(void) dev_t dev; if (! MACHINE_IS_VM) { - printk (KERN_ERR "vmlogrdr: not running under VM, " - "driver not loaded.\n"); + pr_err("not running under VM, driver not loaded.\n"); return -ENODEV; } diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c index 9020eba620ee..5dcef81fc9d9 100644 --- a/drivers/s390/char/vmur.c +++ b/drivers/s390/char/vmur.c @@ -8,6 +8,9 @@ * Frank Munzert <munzert@de.ibm.com> */ +#define KMSG_COMPONENT "vmur" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/cdev.h> #include <linux/smp_lock.h> @@ -40,8 +43,6 @@ MODULE_AUTHOR("IBM Corporation"); MODULE_DESCRIPTION("s390 z/VM virtual unit record device driver"); MODULE_LICENSE("GPL"); -#define PRINTK_HEADER "vmur: " - static dev_t ur_first_dev_maj_min; static struct class *vmur_class; static struct debug_info *vmur_dbf; @@ -987,7 +988,8 @@ static int __init ur_init(void) dev_t dev; if (!MACHINE_IS_VM) { - PRINT_ERR("%s is only available under z/VM.\n", ur_banner); + pr_err("The %s cannot be loaded without z/VM\n", + ur_banner); return -ENODEV; } @@ -1006,7 +1008,8 @@ static int __init ur_init(void) rc = alloc_chrdev_region(&dev, 0, NUM_MINORS, "vmur"); if (rc) { - PRINT_ERR("alloc_chrdev_region failed: err = %d\n", rc); + pr_err("Kernel function alloc_chrdev_region failed with " + "error code %d\n", rc); goto fail_unregister_driver; } ur_first_dev_maj_min = MKDEV(MAJOR(dev), 0); @@ -1016,7 +1019,7 @@ static int __init ur_init(void) rc = PTR_ERR(vmur_class); goto fail_unregister_region; } - PRINT_INFO("%s loaded.\n", ur_banner); + pr_info("%s loaded.\n", ur_banner); return 0; fail_unregister_region: @@ -1034,7 +1037,7 @@ static void __exit ur_exit(void) unregister_chrdev_region(ur_first_dev_maj_min, NUM_MINORS); ccw_driver_unregister(&ur_driver); debug_unregister(vmur_dbf); - PRINT_INFO("%s unloaded.\n", ur_banner); + pr_info("%s unloaded.\n", ur_banner); } module_init(ur_init); diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c index 7fd84be11931..eefc6611412e 100644 --- a/drivers/s390/char/zcore.c +++ b/drivers/s390/char/zcore.c @@ -9,6 +9,9 @@ * Author(s): Michael Holzheu */ +#define KMSG_COMPONENT "zdump" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/init.h> #include <linux/miscdevice.h> #include <linux/utsname.h> @@ -24,8 +27,6 @@ #include "sclp.h" #define TRACE(x...) debug_sprintf_event(zcore_dbf, 1, x) -#define MSG(x...) printk( KERN_ALERT x ) -#define ERROR_MSG(x...) printk ( KERN_ALERT "DUMP: " x ) #define TO_USER 0 #define TO_KERNEL 1 @@ -563,19 +564,19 @@ static int __init sys_info_init(enum arch_id arch) switch (arch) { case ARCH_S390X: - MSG("DETECTED 'S390X (64 bit) OS'\n"); + pr_alert("DETECTED 'S390X (64 bit) OS'\n"); sys_info.sa_base = SAVE_AREA_BASE_S390X; sys_info.sa_size = sizeof(struct save_area_s390x); set_s390x_lc_mask(&sys_info.lc_mask); break; case ARCH_S390: - MSG("DETECTED 'S390 (32 bit) OS'\n"); + pr_alert("DETECTED 'S390 (32 bit) OS'\n"); sys_info.sa_base = SAVE_AREA_BASE_S390; sys_info.sa_size = sizeof(struct save_area_s390); set_s390_lc_mask(&sys_info.lc_mask); break; default: - ERROR_MSG("unknown architecture 0x%x.\n",arch); + pr_alert("0x%x is an unknown architecture.\n",arch); return -EINVAL; } sys_info.arch = arch; @@ -674,7 +675,8 @@ static int __init zcore_init(void) #ifndef __s390x__ if (arch == ARCH_S390X) { - ERROR_MSG("32 bit dumper can't dump 64 bit system!\n"); + pr_alert("The 32-bit dump tool cannot be used for a " + "64-bit system\n"); rc = -EINVAL; goto fail; } diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c index 2f547b840ef0..fe00be3675cd 100644 --- a/drivers/s390/cio/blacklist.c +++ b/drivers/s390/cio/blacklist.c @@ -9,6 +9,9 @@ * Arnd Bergmann (arndb@de.ibm.com) */ +#define KMSG_COMPONENT "cio" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/init.h> #include <linux/vmalloc.h> #include <linux/slab.h> @@ -50,9 +53,10 @@ static int blacklist_range(range_action action, unsigned int from_ssid, { if ((from_ssid > to_ssid) || ((from_ssid == to_ssid) && (from > to))) { if (msgtrigger) - printk(KERN_WARNING "cio: Invalid cio_ignore range " - "0.%x.%04x-0.%x.%04x\n", from_ssid, from, - to_ssid, to); + pr_warning("0.%x.%04x to 0.%x.%04x is not a valid " + "range for cio_ignore\n", from_ssid, from, + to_ssid, to); + return 1; } @@ -140,8 +144,8 @@ static int parse_busid(char *str, unsigned int *cssid, unsigned int *ssid, rc = 0; out: if (rc && msgtrigger) - printk(KERN_WARNING "cio: Invalid cio_ignore device '%s'\n", - str); + pr_warning("%s is not a valid device for the cio_ignore " + "kernel parameter\n", str); return rc; } diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index 3ac2c2019f5e..17fa009d9959 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -19,6 +19,8 @@ #include <asm/ccwdev.h> #include <asm/ccwgroup.h> +#define CCW_BUS_ID_SIZE 20 + /* In Linux 2.4, we had a channel device layer called "chandev" * that did all sorts of obscure stuff for networking devices. * This is another driver that serves as a replacement for just @@ -172,7 +174,7 @@ static int __get_next_bus_id(const char **buf, char *bus_id) len = end - start + 1; end++; } - if (len < BUS_ID_SIZE) { + if (len < CCW_BUS_ID_SIZE) { strlcpy(bus_id, start, len); rc = 0; } else @@ -181,7 +183,7 @@ static int __get_next_bus_id(const char **buf, char *bus_id) return rc; } -static int __is_valid_bus_id(char bus_id[BUS_ID_SIZE]) +static int __is_valid_bus_id(char bus_id[CCW_BUS_ID_SIZE]) { int cssid, ssid, devno; @@ -213,7 +215,7 @@ int ccwgroup_create_from_string(struct device *root, unsigned int creator_id, { struct ccwgroup_device *gdev; int rc, i; - char tmp_bus_id[BUS_ID_SIZE]; + char tmp_bus_id[CCW_BUS_ID_SIZE]; const char *curr_buf; gdev = kzalloc(sizeof(*gdev) + num_devices * sizeof(gdev->cdev[0]), diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index 29826fdd47b8..ebab6ea4659b 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -8,6 +8,9 @@ * Arnd Bergmann (arndb@de.ibm.com) */ +#define KMSG_COMPONENT "cio" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/slab.h> #include <linux/init.h> @@ -333,6 +336,7 @@ static void chsc_process_sei_chp_config(struct chsc_sei_area *sei_area) struct chp_config_data *data; struct chp_id chpid; int num; + char *events[3] = {"configure", "deconfigure", "cancel deconfigure"}; CIO_CRW_EVENT(4, "chsc: channel-path-configuration notification\n"); if (sei_area->rs != 0) @@ -343,8 +347,8 @@ static void chsc_process_sei_chp_config(struct chsc_sei_area *sei_area) if (!chp_test_bit(data->map, num)) continue; chpid.id = num; - printk(KERN_WARNING "cio: processing configure event %d for " - "chpid %x.%02x\n", data->op, chpid.cssid, chpid.id); + pr_notice("Processing %s for channel path %x.%02x\n", + events[data->op], chpid.cssid, chpid.id); switch (data->op) { case 0: chp_cfg_schedule(chpid, 1); diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 3db2c386546f..36af2636d910 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -9,6 +9,9 @@ * Martin Schwidefsky (schwidefsky@de.ibm.com) */ +#define KMSG_COMPONENT "cio" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> @@ -104,44 +107,6 @@ cio_get_options (struct subchannel *sch) return flags; } -/* - * Use tpi to get a pending interrupt, call the interrupt handler and - * return a pointer to the subchannel structure. - */ -static int -cio_tpi(void) -{ - struct tpi_info *tpi_info; - struct subchannel *sch; - struct irb *irb; - int irq_context; - - tpi_info = (struct tpi_info *) __LC_SUBCHANNEL_ID; - if (tpi (NULL) != 1) - return 0; - irb = (struct irb *) __LC_IRB; - /* Store interrupt response block to lowcore. */ - if (tsch (tpi_info->schid, irb) != 0) - /* Not status pending or not operational. */ - return 1; - sch = (struct subchannel *)(unsigned long)tpi_info->intparm; - if (!sch) - return 1; - irq_context = in_interrupt(); - if (!irq_context) - local_bh_disable(); - irq_enter (); - spin_lock(sch->lock); - memcpy(&sch->schib.scsw, &irb->scsw, sizeof(union scsw)); - if (sch->driver && sch->driver->irq) - sch->driver->irq(sch); - spin_unlock(sch->lock); - irq_exit (); - if (!irq_context) - _local_bh_enable(); - return 1; -} - static int cio_start_handle_notoper(struct subchannel *sch, __u8 lpm) { @@ -687,6 +652,43 @@ static char console_sch_name[10] = "0.x.xxxx"; static struct io_subchannel_private console_priv; static int console_subchannel_in_use; +/* + * Use tpi to get a pending interrupt, call the interrupt handler and + * return a pointer to the subchannel structure. + */ +static int cio_tpi(void) +{ + struct tpi_info *tpi_info; + struct subchannel *sch; + struct irb *irb; + int irq_context; + + tpi_info = (struct tpi_info *) __LC_SUBCHANNEL_ID; + if (tpi(NULL) != 1) + return 0; + irb = (struct irb *) __LC_IRB; + /* Store interrupt response block to lowcore. */ + if (tsch(tpi_info->schid, irb) != 0) + /* Not status pending or not operational. */ + return 1; + sch = (struct subchannel *)(unsigned long)tpi_info->intparm; + if (!sch) + return 1; + irq_context = in_interrupt(); + if (!irq_context) + local_bh_disable(); + irq_enter(); + spin_lock(sch->lock); + memcpy(&sch->schib.scsw, &irb->scsw, sizeof(union scsw)); + if (sch->driver && sch->driver->irq) + sch->driver->irq(sch); + spin_unlock(sch->lock); + irq_exit(); + if (!irq_context) + _local_bh_enable(); + return 1; +} + void *cio_get_console_priv(void) { return &console_priv; @@ -780,7 +782,7 @@ cio_probe_console(void) sch_no = cio_get_console_sch_no(); if (sch_no == -1) { console_subchannel_in_use = 0; - printk(KERN_WARNING "cio: No ccw console found!\n"); + pr_warning("No CCW console was found\n"); return ERR_PTR(-ENODEV); } memset(&console_subchannel, 0, sizeof(struct subchannel)); diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c index a90b28c0be57..12643a815848 100644 --- a/drivers/s390/cio/cmf.c +++ b/drivers/s390/cio/cmf.c @@ -25,6 +25,9 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#define KMSG_COMPONENT "cio" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/bootmem.h> #include <linux/device.h> #include <linux/init.h> @@ -1359,9 +1362,8 @@ static int __init init_cmf(void) default: return 1; } - - printk(KERN_INFO "cio: Channel measurement facility using %s " - "format (%s)\n", format_string, detect_string); + pr_info("Channel measurement facility initialized using format " + "%s (mode %s)\n", format_string, detect_string); return 0; } diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 76bbb1e74c29..d744aa1981db 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -6,6 +6,10 @@ * Author(s): Arnd Bergmann (arndb@de.ibm.com) * Cornelia Huck (cornelia.huck@de.ibm.com) */ + +#define KMSG_COMPONENT "cio" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/device.h> @@ -844,8 +848,8 @@ out: s390_unregister_crw_handler(CRW_RSC_CSS); chsc_free_sei_area(); kfree(slow_subchannel_set); - printk(KERN_WARNING"cio: failed to initialize css driver (%d)!\n", - ret); + pr_alert("The CSS device driver initialization failed with " + "errno=%d\n", ret); return ret; } diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 4e4008325e28..fc0c0abd1271 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -1179,12 +1179,6 @@ static int io_subchannel_probe(struct subchannel *sch) return 0; } io_subchannel_init_fields(sch); - /* - * First check if a fitting device may be found amongst the - * disconnected devices or in the orphanage. - */ - dev_id.devno = sch->schib.pmcw.dev; - dev_id.ssid = sch->schid.ssid; rc = sysfs_create_group(&sch->dev.kobj, &io_subchannel_attr_group); if (rc) @@ -1196,6 +1190,12 @@ static int io_subchannel_probe(struct subchannel *sch) rc = -ENOMEM; goto out_err; } + /* + * First check if a fitting device may be found amongst the + * disconnected devices or in the orphanage. + */ + dev_id.devno = sch->schib.pmcw.dev; + dev_id.ssid = sch->schid.ssid; cdev = get_disc_ccwdev_by_dev_id(&dev_id, NULL); if (!cdev) cdev = get_orphaned_ccwdev_by_dev_id(to_css(sch->dev.parent), @@ -1723,7 +1723,7 @@ __ccwdev_check_busid(struct device *dev, void *id) bus_id = id; - return (strncmp(bus_id, dev_name(dev), BUS_ID_SIZE) == 0); + return (strcmp(bus_id, dev_name(dev)) == 0); } diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index e3ea1d5f2810..c60f2566d28c 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -10,6 +10,7 @@ #include <asm/page.h> #include <asm/schid.h> +#include <asm/debug.h> #include "chsc.h" #define QDIO_BUSY_BIT_PATIENCE 100 /* 100 microseconds */ @@ -111,12 +112,12 @@ static inline int do_sqbs(u64 token, unsigned char state, int queue, } static inline int do_eqbs(u64 token, unsigned char *state, int queue, - int *start, int *count) + int *start, int *count, int ack) { register unsigned long _ccq asm ("0") = *count; register unsigned long _token asm ("1") = token; unsigned long _queuestart = ((unsigned long)queue << 32) | *start; - unsigned long _state = 0; + unsigned long _state = (unsigned long)ack << 63; asm volatile( " .insn rrf,0xB99c0000,%1,%2,0,0" @@ -133,7 +134,7 @@ static inline int do_eqbs(u64 token, unsigned char *state, int queue, static inline int do_sqbs(u64 token, unsigned char state, int queue, int *start, int *count) { return 0; } static inline int do_eqbs(u64 token, unsigned char *state, int queue, - int *start, int *count) { return 0; } + int *start, int *count, int ack) { return 0; } #endif /* CONFIG_64BIT */ struct qdio_irq; @@ -186,11 +187,11 @@ struct qdio_input_q { /* input buffer acknowledgement flag */ int polling; + /* how much sbals are acknowledged with qebsm */ + int ack_count; + /* last time of noticing incoming data */ u64 timestamp; - - /* lock for clearing the acknowledgement */ - spinlock_t lock; }; struct qdio_output_q { @@ -300,11 +301,13 @@ struct qdio_irq { struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ]; struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ]; + debug_info_t *debug_area; struct mutex setup_mutex; }; /* helper functions */ #define queue_type(q) q->irq_ptr->qib.qfmt +#define SCH_NO(q) (q->irq_ptr->schid.sch_no) #define is_thinint_irq(irq) \ (irq->qib.qfmt == QDIO_IQDIO_QFMT || \ @@ -348,10 +351,13 @@ static inline unsigned long long get_usecs(void) ((bufnr + 1) & QDIO_MAX_BUFFERS_MASK) #define add_buf(bufnr, inc) \ ((bufnr + inc) & QDIO_MAX_BUFFERS_MASK) +#define sub_buf(bufnr, dec) \ + ((bufnr - dec) & QDIO_MAX_BUFFERS_MASK) /* prototypes for thin interrupt */ void qdio_sync_after_thinint(struct qdio_q *q); -int get_buf_state(struct qdio_q *q, unsigned int bufnr, unsigned char *state); +int get_buf_state(struct qdio_q *q, unsigned int bufnr, unsigned char *state, + int auto_ack); void qdio_check_outbound_after_thinint(struct qdio_q *q); int qdio_inbound_q_moved(struct qdio_q *q); void qdio_kick_inbound_handler(struct qdio_q *q); @@ -378,10 +384,15 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm, int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs); void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr); +int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr, + struct subchannel_id *schid, + struct qdio_ssqd_desc *data); int qdio_setup_irq(struct qdio_initialize *init_data); void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, struct ccw_device *cdev); void qdio_release_memory(struct qdio_irq *irq_ptr); +int qdio_setup_create_sysfs(struct ccw_device *cdev); +void qdio_setup_destroy_sysfs(struct ccw_device *cdev); int qdio_setup_init(void); void qdio_setup_exit(void); diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index f05590355be8..f8a3b6967f69 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -14,7 +14,7 @@ #include "qdio.h" debug_info_t *qdio_dbf_setup; -debug_info_t *qdio_dbf_trace; +debug_info_t *qdio_dbf_error; static struct dentry *debugfs_root; #define MAX_DEBUGFS_QUEUES 32 @@ -22,59 +22,33 @@ static struct dentry *debugfs_queues[MAX_DEBUGFS_QUEUES] = { NULL }; static DEFINE_MUTEX(debugfs_mutex); #define QDIO_DEBUGFS_NAME_LEN 40 -void qdio_allocate_do_dbf(struct qdio_initialize *init_data) +void qdio_allocate_dbf(struct qdio_initialize *init_data, + struct qdio_irq *irq_ptr) { - char dbf_text[20]; - - sprintf(dbf_text, "qfmt:%x", init_data->q_format); - QDIO_DBF_TEXT0(0, setup, dbf_text); - QDIO_DBF_HEX0(0, setup, init_data->adapter_name, 8); - sprintf(dbf_text, "qpff%4x", init_data->qib_param_field_format); - QDIO_DBF_TEXT0(0, setup, dbf_text); - QDIO_DBF_HEX0(0, setup, &init_data->qib_param_field, sizeof(void *)); - QDIO_DBF_HEX0(0, setup, &init_data->input_slib_elements, sizeof(void *)); - QDIO_DBF_HEX0(0, setup, &init_data->output_slib_elements, sizeof(void *)); - sprintf(dbf_text, "niq:%4x", init_data->no_input_qs); - QDIO_DBF_TEXT0(0, setup, dbf_text); - sprintf(dbf_text, "noq:%4x", init_data->no_output_qs); - QDIO_DBF_TEXT0(0, setup, dbf_text); - QDIO_DBF_HEX0(0, setup, &init_data->input_handler, sizeof(void *)); - QDIO_DBF_HEX0(0, setup, &init_data->output_handler, sizeof(void *)); - QDIO_DBF_HEX0(0, setup, &init_data->int_parm, sizeof(long)); - QDIO_DBF_HEX0(0, setup, &init_data->flags, sizeof(long)); - QDIO_DBF_HEX0(0, setup, &init_data->input_sbal_addr_array, sizeof(void *)); - QDIO_DBF_HEX0(0, setup, &init_data->output_sbal_addr_array, sizeof(void *)); -} - -static void qdio_unregister_dbf_views(void) -{ - if (qdio_dbf_setup) - debug_unregister(qdio_dbf_setup); - if (qdio_dbf_trace) - debug_unregister(qdio_dbf_trace); -} - -static int qdio_register_dbf_views(void) -{ - qdio_dbf_setup = debug_register("qdio_setup", QDIO_DBF_SETUP_PAGES, - QDIO_DBF_SETUP_NR_AREAS, - QDIO_DBF_SETUP_LEN); - if (!qdio_dbf_setup) - goto oom; - debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view); - debug_set_level(qdio_dbf_setup, QDIO_DBF_SETUP_LEVEL); - - qdio_dbf_trace = debug_register("qdio_trace", QDIO_DBF_TRACE_PAGES, - QDIO_DBF_TRACE_NR_AREAS, - QDIO_DBF_TRACE_LEN); - if (!qdio_dbf_trace) - goto oom; - debug_register_view(qdio_dbf_trace, &debug_hex_ascii_view); - debug_set_level(qdio_dbf_trace, QDIO_DBF_TRACE_LEVEL); - return 0; -oom: - qdio_unregister_dbf_views(); - return -ENOMEM; + char text[20]; + + DBF_EVENT("qfmt:%1d", init_data->q_format); + DBF_HEX(init_data->adapter_name, 8); + DBF_EVENT("qpff%4x", init_data->qib_param_field_format); + DBF_HEX(&init_data->qib_param_field, sizeof(void *)); + DBF_HEX(&init_data->input_slib_elements, sizeof(void *)); + DBF_HEX(&init_data->output_slib_elements, sizeof(void *)); + DBF_EVENT("niq:%1d noq:%1d", init_data->no_input_qs, + init_data->no_output_qs); + DBF_HEX(&init_data->input_handler, sizeof(void *)); + DBF_HEX(&init_data->output_handler, sizeof(void *)); + DBF_HEX(&init_data->int_parm, sizeof(long)); + DBF_HEX(&init_data->flags, sizeof(long)); + DBF_HEX(&init_data->input_sbal_addr_array, sizeof(void *)); + DBF_HEX(&init_data->output_sbal_addr_array, sizeof(void *)); + DBF_EVENT("irq:%8lx", (unsigned long)irq_ptr); + + /* allocate trace view for the interface */ + snprintf(text, 20, "qdio_%s", dev_name(&init_data->cdev->dev)); + irq_ptr->debug_area = debug_register(text, 2, 1, 16); + debug_register_view(irq_ptr->debug_area, &debug_hex_ascii_view); + debug_set_level(irq_ptr->debug_area, DBF_WARN); + DBF_DEV_EVENT(DBF_ERR, irq_ptr, "dbf created"); } static int qstat_show(struct seq_file *m, void *v) @@ -86,16 +60,18 @@ static int qstat_show(struct seq_file *m, void *v) if (!q) return 0; - seq_printf(m, "device state indicator: %d\n", *q->irq_ptr->dsci); + seq_printf(m, "device state indicator: %d\n", *(u32 *)q->irq_ptr->dsci); seq_printf(m, "nr_used: %d\n", atomic_read(&q->nr_buf_used)); seq_printf(m, "ftc: %d\n", q->first_to_check); seq_printf(m, "last_move_ftc: %d\n", q->last_move_ftc); seq_printf(m, "polling: %d\n", q->u.in.polling); + seq_printf(m, "ack count: %d\n", q->u.in.ack_count); seq_printf(m, "slsb buffer states:\n"); + seq_printf(m, "|0 |8 |16 |24 |32 |40 |48 |56 63|\n"); qdio_siga_sync_q(q); for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) { - get_buf_state(q, i, &state); + get_buf_state(q, i, &state, 0); switch (state) { case SLSB_P_INPUT_NOT_INIT: case SLSB_P_OUTPUT_NOT_INIT: @@ -127,6 +103,7 @@ static int qstat_show(struct seq_file *m, void *v) seq_printf(m, "\n"); } seq_printf(m, "\n"); + seq_printf(m, "|64 |72 |80 |88 |96 |104 |112 | 127|\n"); return 0; } @@ -223,11 +200,24 @@ void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cd int __init qdio_debug_init(void) { debugfs_root = debugfs_create_dir("qdio_queues", NULL); - return qdio_register_dbf_views(); + + qdio_dbf_setup = debug_register("qdio_setup", 16, 1, 16); + debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view); + debug_set_level(qdio_dbf_setup, DBF_INFO); + DBF_EVENT("dbf created\n"); + + qdio_dbf_error = debug_register("qdio_error", 4, 1, 16); + debug_register_view(qdio_dbf_error, &debug_hex_ascii_view); + debug_set_level(qdio_dbf_error, DBF_INFO); + DBF_ERROR("dbf created\n"); + return 0; } void qdio_debug_exit(void) { debugfs_remove(debugfs_root); - qdio_unregister_dbf_views(); + if (qdio_dbf_setup) + debug_unregister(qdio_dbf_setup); + if (qdio_dbf_error) + debug_unregister(qdio_dbf_error); } diff --git a/drivers/s390/cio/qdio_debug.h b/drivers/s390/cio/qdio_debug.h index 5a4d85b829ad..5d70bd162ae9 100644 --- a/drivers/s390/cio/qdio_debug.h +++ b/drivers/s390/cio/qdio_debug.h @@ -12,80 +12,72 @@ #include <asm/qdio.h> #include "qdio.h" -#define QDIO_DBF_HEX(ex, name, level, addr, len) \ +/* that gives us 15 characters in the text event views */ +#define QDIO_DBF_LEN 16 + +extern debug_info_t *qdio_dbf_setup; +extern debug_info_t *qdio_dbf_error; + +/* sort out low debug levels early to avoid wasted sprints */ +static inline int qdio_dbf_passes(debug_info_t *dbf_grp, int level) +{ + return (level <= dbf_grp->level); +} + +#define DBF_ERR 3 /* error conditions */ +#define DBF_WARN 4 /* warning conditions */ +#define DBF_INFO 6 /* informational */ + +#undef DBF_EVENT +#undef DBF_ERROR +#undef DBF_DEV_EVENT + +#define DBF_EVENT(text...) \ do { \ - if (ex) \ - debug_exception(qdio_dbf_##name, level, (void *)(addr), len); \ - else \ - debug_event(qdio_dbf_##name, level, (void *)(addr), len); \ + char debug_buffer[QDIO_DBF_LEN]; \ + snprintf(debug_buffer, QDIO_DBF_LEN, text); \ + debug_text_event(qdio_dbf_setup, DBF_ERR, debug_buffer); \ } while (0) -#define QDIO_DBF_TEXT(ex, name, level, text) \ + +#define DBF_HEX(addr, len) \ do { \ - if (ex) \ - debug_text_exception(qdio_dbf_##name, level, text); \ - else \ - debug_text_event(qdio_dbf_##name, level, text); \ + debug_event(qdio_dbf_setup, DBF_ERR, (void*)(addr), len); \ } while (0) -#define QDIO_DBF_HEX0(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 0, addr, len) -#define QDIO_DBF_HEX1(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 1, addr, len) -#define QDIO_DBF_HEX2(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 2, addr, len) - -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_DBF_HEX3(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 3, addr, len) -#define QDIO_DBF_HEX4(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 4, addr, len) -#define QDIO_DBF_HEX5(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 5, addr, len) -#define QDIO_DBF_HEX6(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 6, addr, len) -#else -#define QDIO_DBF_HEX3(ex, name, addr, len) do {} while (0) -#define QDIO_DBF_HEX4(ex, name, addr, len) do {} while (0) -#define QDIO_DBF_HEX5(ex, name, addr, len) do {} while (0) -#define QDIO_DBF_HEX6(ex, name, addr, len) do {} while (0) -#endif /* CONFIG_QDIO_DEBUG */ - -#define QDIO_DBF_TEXT0(ex, name, text) QDIO_DBF_TEXT(ex, name, 0, text) -#define QDIO_DBF_TEXT1(ex, name, text) QDIO_DBF_TEXT(ex, name, 1, text) -#define QDIO_DBF_TEXT2(ex, name, text) QDIO_DBF_TEXT(ex, name, 2, text) - -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_DBF_TEXT3(ex, name, text) QDIO_DBF_TEXT(ex, name, 3, text) -#define QDIO_DBF_TEXT4(ex, name, text) QDIO_DBF_TEXT(ex, name, 4, text) -#define QDIO_DBF_TEXT5(ex, name, text) QDIO_DBF_TEXT(ex, name, 5, text) -#define QDIO_DBF_TEXT6(ex, name, text) QDIO_DBF_TEXT(ex, name, 6, text) -#else -#define QDIO_DBF_TEXT3(ex, name, text) do {} while (0) -#define QDIO_DBF_TEXT4(ex, name, text) do {} while (0) -#define QDIO_DBF_TEXT5(ex, name, text) do {} while (0) -#define QDIO_DBF_TEXT6(ex, name, text) do {} while (0) -#endif /* CONFIG_QDIO_DEBUG */ +#define DBF_ERROR(text...) \ + do { \ + char debug_buffer[QDIO_DBF_LEN]; \ + snprintf(debug_buffer, QDIO_DBF_LEN, text); \ + debug_text_event(qdio_dbf_error, DBF_ERR, debug_buffer); \ + } while (0) -/* s390dbf views */ -#define QDIO_DBF_SETUP_LEN 8 -#define QDIO_DBF_SETUP_PAGES 8 -#define QDIO_DBF_SETUP_NR_AREAS 1 +#define DBF_ERROR_HEX(addr, len) \ + do { \ + debug_event(qdio_dbf_error, DBF_ERR, (void*)(addr), len); \ + } while (0) -#define QDIO_DBF_TRACE_LEN 8 -#define QDIO_DBF_TRACE_NR_AREAS 2 -#ifdef CONFIG_QDIO_DEBUG -#define QDIO_DBF_TRACE_PAGES 32 -#define QDIO_DBF_SETUP_LEVEL 6 -#define QDIO_DBF_TRACE_LEVEL 4 -#else /* !CONFIG_QDIO_DEBUG */ -#define QDIO_DBF_TRACE_PAGES 8 -#define QDIO_DBF_SETUP_LEVEL 2 -#define QDIO_DBF_TRACE_LEVEL 2 -#endif /* CONFIG_QDIO_DEBUG */ +#define DBF_DEV_EVENT(level, device, text...) \ + do { \ + char debug_buffer[QDIO_DBF_LEN]; \ + if (qdio_dbf_passes(device->debug_area, level)) { \ + snprintf(debug_buffer, QDIO_DBF_LEN, text); \ + debug_text_event(device->debug_area, level, debug_buffer); \ + } \ + } while (0) -extern debug_info_t *qdio_dbf_setup; -extern debug_info_t *qdio_dbf_trace; +#define DBF_DEV_HEX(level, device, addr, len) \ + do { \ + debug_event(device->debug_area, level, (void*)(addr), len); \ + } while (0) -void qdio_allocate_do_dbf(struct qdio_initialize *init_data); -void debug_print_bstat(struct qdio_q *q); +void qdio_allocate_dbf(struct qdio_initialize *init_data, + struct qdio_irq *irq_ptr); void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev); void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev); int qdio_debug_init(void); void qdio_debug_exit(void); + #endif diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 7c8659151993..584f8498e3b3 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -95,8 +95,6 @@ static inline int do_siga_output(unsigned long schid, unsigned long mask, static inline int qdio_check_ccq(struct qdio_q *q, unsigned int ccq) { - char dbf_text[15]; - /* all done or next buffer state different */ if (ccq == 0 || ccq == 32) return 0; @@ -104,8 +102,7 @@ static inline int qdio_check_ccq(struct qdio_q *q, unsigned int ccq) if (ccq == 96 || ccq == 97) return 1; /* notify devices immediately */ - sprintf(dbf_text, "%d", ccq); - QDIO_DBF_TEXT2(1, trace, dbf_text); + DBF_ERROR("%4x ccq:%3d", SCH_NO(q), ccq); return -EIO; } @@ -115,41 +112,45 @@ static inline int qdio_check_ccq(struct qdio_q *q, unsigned int ccq) * @state: state of the extracted buffers * @start: buffer number to start at * @count: count of buffers to examine + * @auto_ack: automatically acknowledge buffers * * Returns the number of successfull extracted equal buffer states. * Stops processing if a state is different from the last buffers state. */ static int qdio_do_eqbs(struct qdio_q *q, unsigned char *state, - int start, int count) + int start, int count, int auto_ack) { unsigned int ccq = 0; int tmp_count = count, tmp_start = start; int nr = q->nr; int rc; - char dbf_text[15]; BUG_ON(!q->irq_ptr->sch_token); + qdio_perf_stat_inc(&perf_stats.debug_eqbs_all); if (!q->is_input_q) nr += q->irq_ptr->nr_input_qs; again: - ccq = do_eqbs(q->irq_ptr->sch_token, state, nr, &tmp_start, &tmp_count); + ccq = do_eqbs(q->irq_ptr->sch_token, state, nr, &tmp_start, &tmp_count, + auto_ack); rc = qdio_check_ccq(q, ccq); /* At least one buffer was processed, return and extract the remaining * buffers later. */ - if ((ccq == 96) && (count != tmp_count)) + if ((ccq == 96) && (count != tmp_count)) { + qdio_perf_stat_inc(&perf_stats.debug_eqbs_incomplete); return (count - tmp_count); + } + if (rc == 1) { - QDIO_DBF_TEXT5(1, trace, "eqAGAIN"); + DBF_DEV_EVENT(DBF_WARN, q->irq_ptr, "EQBS again:%2d", ccq); goto again; } if (rc < 0) { - QDIO_DBF_TEXT2(1, trace, "eqberr"); - sprintf(dbf_text, "%2x,%2x,%d,%d", count, tmp_count, ccq, nr); - QDIO_DBF_TEXT2(1, trace, dbf_text); + DBF_ERROR("%4x EQBS ERROR", SCH_NO(q)); + DBF_ERROR("%3d%3d%2d", count, tmp_count, nr); q->handler(q->irq_ptr->cdev, QDIO_ERROR_ACTIVATE_CHECK_CONDITION, 0, -1, -1, q->irq_ptr->int_parm); @@ -176,9 +177,12 @@ static int qdio_do_sqbs(struct qdio_q *q, unsigned char state, int start, int tmp_count = count, tmp_start = start; int nr = q->nr; int rc; - char dbf_text[15]; + + if (!count) + return 0; BUG_ON(!q->irq_ptr->sch_token); + qdio_perf_stat_inc(&perf_stats.debug_sqbs_all); if (!q->is_input_q) nr += q->irq_ptr->nr_input_qs; @@ -186,16 +190,13 @@ again: ccq = do_sqbs(q->irq_ptr->sch_token, state, nr, &tmp_start, &tmp_count); rc = qdio_check_ccq(q, ccq); if (rc == 1) { - QDIO_DBF_TEXT5(1, trace, "sqAGAIN"); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "SQBS again:%2d", ccq); + qdio_perf_stat_inc(&perf_stats.debug_sqbs_incomplete); goto again; } if (rc < 0) { - QDIO_DBF_TEXT3(1, trace, "sqberr"); - sprintf(dbf_text, "%2x,%2x", count, tmp_count); - QDIO_DBF_TEXT3(1, trace, dbf_text); - sprintf(dbf_text, "%d,%d", ccq, nr); - QDIO_DBF_TEXT3(1, trace, dbf_text); - + DBF_ERROR("%4x SQBS ERROR", SCH_NO(q)); + DBF_ERROR("%3d%3d%2d", count, tmp_count, nr); q->handler(q->irq_ptr->cdev, QDIO_ERROR_ACTIVATE_CHECK_CONDITION, 0, -1, -1, q->irq_ptr->int_parm); @@ -207,7 +208,8 @@ again: /* returns number of examined buffers and their common state in *state */ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr, - unsigned char *state, unsigned int count) + unsigned char *state, unsigned int count, + int auto_ack) { unsigned char __state = 0; int i; @@ -216,7 +218,7 @@ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr, BUG_ON(count > QDIO_MAX_BUFFERS_PER_Q); if (is_qebsm(q)) - return qdio_do_eqbs(q, state, bufnr, count); + return qdio_do_eqbs(q, state, bufnr, count, auto_ack); for (i = 0; i < count; i++) { if (!__state) @@ -230,9 +232,9 @@ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr, } inline int get_buf_state(struct qdio_q *q, unsigned int bufnr, - unsigned char *state) + unsigned char *state, int auto_ack) { - return get_buf_states(q, bufnr, state, 1); + return get_buf_states(q, bufnr, state, 1, auto_ack); } /* wrap-around safe setting of slsb states, returns number of changed buffers */ @@ -282,14 +284,13 @@ static int qdio_siga_sync(struct qdio_q *q, unsigned int output, if (!need_siga_sync(q)) return 0; + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "siga-s:"); + DBF_DEV_HEX(DBF_INFO, q->irq_ptr, q, sizeof(void *)); qdio_perf_stat_inc(&perf_stats.siga_sync); cc = do_siga_sync(q->irq_ptr->schid, output, input); - if (cc) { - QDIO_DBF_TEXT4(0, trace, "sigasync"); - QDIO_DBF_HEX4(0, trace, &q, sizeof(void *)); - QDIO_DBF_HEX3(0, trace, &cc, sizeof(int *)); - } + if (cc) + DBF_ERROR("%4x SIGA-S:%2d", SCH_NO(q), cc); return cc; } @@ -333,17 +334,13 @@ static int qdio_siga_output(struct qdio_q *q) int cc; u32 busy_bit; u64 start_time = 0; - char dbf_text[15]; - - QDIO_DBF_TEXT5(0, trace, "sigaout"); - QDIO_DBF_HEX5(0, trace, &q, sizeof(void *)); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "siga-w:%1d", q->nr); qdio_perf_stat_inc(&perf_stats.siga_out); again: cc = qdio_do_siga_output(q, &busy_bit); if (queue_type(q) == QDIO_IQDIO_QFMT && cc == 2 && busy_bit) { - sprintf(dbf_text, "bb%4x%2x", q->irq_ptr->schid.sch_no, q->nr); - QDIO_DBF_TEXT3(0, trace, dbf_text); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "siga-w bb:%2d", q->nr); if (!start_time) start_time = get_usecs(); @@ -354,7 +351,7 @@ again: if (cc == 2 && busy_bit) cc |= QDIO_ERROR_SIGA_BUSY; if (cc) - QDIO_DBF_HEX3(0, trace, &cc, sizeof(int *)); + DBF_ERROR("%4x SIGA-W:%2d", SCH_NO(q), cc); return cc; } @@ -362,14 +359,12 @@ static inline int qdio_siga_input(struct qdio_q *q) { int cc; - QDIO_DBF_TEXT4(0, trace, "sigain"); - QDIO_DBF_HEX4(0, trace, &q, sizeof(void *)); - + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "siga-r:%1d", q->nr); qdio_perf_stat_inc(&perf_stats.siga_in); cc = do_siga_input(q->irq_ptr->schid, q->mask); if (cc) - QDIO_DBF_HEX3(0, trace, &cc, sizeof(int *)); + DBF_ERROR("%4x SIGA-R:%2d", SCH_NO(q), cc); return cc; } @@ -387,35 +382,91 @@ void qdio_sync_after_thinint(struct qdio_q *q) inline void qdio_stop_polling(struct qdio_q *q) { - spin_lock_bh(&q->u.in.lock); - if (!q->u.in.polling) { - spin_unlock_bh(&q->u.in.lock); + if (!q->u.in.polling) return; - } + q->u.in.polling = 0; qdio_perf_stat_inc(&perf_stats.debug_stop_polling); /* show the card that we are not polling anymore */ - set_buf_state(q, q->last_move_ftc, SLSB_P_INPUT_NOT_INIT); - spin_unlock_bh(&q->u.in.lock); + if (is_qebsm(q)) { + set_buf_states(q, q->last_move_ftc, SLSB_P_INPUT_NOT_INIT, + q->u.in.ack_count); + q->u.in.ack_count = 0; + } else + set_buf_state(q, q->last_move_ftc, SLSB_P_INPUT_NOT_INIT); } -static void announce_buffer_error(struct qdio_q *q) +static void announce_buffer_error(struct qdio_q *q, int count) { - char dbf_text[15]; + q->qdio_error = QDIO_ERROR_SLSB_STATE; - if (q->is_input_q) - QDIO_DBF_TEXT3(1, trace, "inperr"); - else - QDIO_DBF_TEXT3(0, trace, "outperr"); + /* special handling for no target buffer empty */ + if ((!q->is_input_q && + (q->sbal[q->first_to_check]->element[15].flags & 0xff) == 0x10)) { + qdio_perf_stat_inc(&perf_stats.outbound_target_full); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "OUTFULL FTC:%3d", + q->first_to_check); + return; + } - sprintf(dbf_text, "%x-%x-%x", q->first_to_check, - q->sbal[q->first_to_check]->element[14].flags, - q->sbal[q->first_to_check]->element[15].flags); - QDIO_DBF_TEXT3(1, trace, dbf_text); - QDIO_DBF_HEX2(1, trace, q->sbal[q->first_to_check], 256); + DBF_ERROR("%4x BUF ERROR", SCH_NO(q)); + DBF_ERROR((q->is_input_q) ? "IN:%2d" : "OUT:%2d", q->nr); + DBF_ERROR("FTC:%3d C:%3d", q->first_to_check, count); + DBF_ERROR("F14:%2x F15:%2x", + q->sbal[q->first_to_check]->element[14].flags & 0xff, + q->sbal[q->first_to_check]->element[15].flags & 0xff); +} - q->qdio_error = QDIO_ERROR_SLSB_STATE; +static inline void inbound_primed(struct qdio_q *q, int count) +{ + int new; + + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in prim: %3d", count); + + /* for QEBSM the ACK was already set by EQBS */ + if (is_qebsm(q)) { + if (!q->u.in.polling) { + q->u.in.polling = 1; + q->u.in.ack_count = count; + q->last_move_ftc = q->first_to_check; + return; + } + + /* delete the previous ACK's */ + set_buf_states(q, q->last_move_ftc, SLSB_P_INPUT_NOT_INIT, + q->u.in.ack_count); + q->u.in.ack_count = count; + q->last_move_ftc = q->first_to_check; + return; + } + + /* + * ACK the newest buffer. The ACK will be removed in qdio_stop_polling + * or by the next inbound run. + */ + new = add_buf(q->first_to_check, count - 1); + if (q->u.in.polling) { + /* reset the previous ACK but first set the new one */ + set_buf_state(q, new, SLSB_P_INPUT_ACK); + set_buf_state(q, q->last_move_ftc, SLSB_P_INPUT_NOT_INIT); + } + else { + q->u.in.polling = 1; + set_buf_state(q, q->first_to_check, SLSB_P_INPUT_ACK); + } + + q->last_move_ftc = new; + count--; + if (!count) + return; + + /* + * Need to change all PRIMED buffers to NOT_INIT, otherwise + * we're loosing initiative in the thinint code. + */ + set_buf_states(q, next_buf(q->first_to_check), SLSB_P_INPUT_NOT_INIT, + count); } static int get_inbound_buffer_frontier(struct qdio_q *q) @@ -424,13 +475,6 @@ static int get_inbound_buffer_frontier(struct qdio_q *q) unsigned char state; /* - * If we still poll don't update last_move_ftc, keep the - * previously ACK buffer there. - */ - if (!q->u.in.polling) - q->last_move_ftc = q->first_to_check; - - /* * Don't check 128 buffers, as otherwise qdio_inbound_q_moved * would return 0. */ @@ -450,34 +494,13 @@ check_next: if (q->first_to_check == stop) goto out; - count = get_buf_states(q, q->first_to_check, &state, count); + count = get_buf_states(q, q->first_to_check, &state, count, 1); if (!count) goto out; switch (state) { case SLSB_P_INPUT_PRIMED: - QDIO_DBF_TEXT5(0, trace, "inptprim"); - - /* - * Only ACK the first buffer. The ACK will be removed in - * qdio_stop_polling. - */ - if (q->u.in.polling) - state = SLSB_P_INPUT_NOT_INIT; - else { - q->u.in.polling = 1; - state = SLSB_P_INPUT_ACK; - } - set_buf_state(q, q->first_to_check, state); - - /* - * Need to change all PRIMED buffers to NOT_INIT, otherwise - * we're loosing initiative in the thinint code. - */ - if (count > 1) - set_buf_states(q, next_buf(q->first_to_check), - SLSB_P_INPUT_NOT_INIT, count - 1); - + inbound_primed(q, count); /* * No siga-sync needed for non-qebsm here, as the inbound queue * will be synced on the next siga-r, resp. @@ -487,21 +510,23 @@ check_next: atomic_sub(count, &q->nr_buf_used); goto check_next; case SLSB_P_INPUT_ERROR: - announce_buffer_error(q); + announce_buffer_error(q, count); /* process the buffer, the upper layer will take care of it */ q->first_to_check = add_buf(q->first_to_check, count); atomic_sub(count, &q->nr_buf_used); break; case SLSB_CU_INPUT_EMPTY: + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in nop"); + break; case SLSB_P_INPUT_NOT_INIT: case SLSB_P_INPUT_ACK: - QDIO_DBF_TEXT5(0, trace, "inpnipro"); + WARN_ON(1); + q->first_to_check++; break; default: BUG(); } out: - QDIO_DBF_HEX4(0, trace, &q->first_to_check, sizeof(int)); return q->first_to_check; } @@ -515,8 +540,7 @@ int qdio_inbound_q_moved(struct qdio_q *q) if (!need_siga_sync(q) && !pci_out_supported(q)) q->u.in.timestamp = get_usecs(); - QDIO_DBF_TEXT4(0, trace, "inhasmvd"); - QDIO_DBF_HEX4(0, trace, &q, sizeof(void *)); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in moved"); return 1; } else return 0; @@ -524,10 +548,7 @@ int qdio_inbound_q_moved(struct qdio_q *q) static int qdio_inbound_q_done(struct qdio_q *q) { - unsigned char state; -#ifdef CONFIG_QDIO_DEBUG - char dbf_text[15]; -#endif + unsigned char state = 0; if (!atomic_read(&q->nr_buf_used)) return 1; @@ -538,7 +559,7 @@ static int qdio_inbound_q_done(struct qdio_q *q) */ qdio_siga_sync_q(q); - get_buf_state(q, q->first_to_check, &state); + get_buf_state(q, q->first_to_check, &state, 0); if (state == SLSB_P_INPUT_PRIMED) /* we got something to do */ return 0; @@ -552,20 +573,12 @@ static int qdio_inbound_q_done(struct qdio_q *q) * has (probably) not moved (see qdio_inbound_processing). */ if (get_usecs() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) { -#ifdef CONFIG_QDIO_DEBUG - QDIO_DBF_TEXT4(0, trace, "inqisdon"); - QDIO_DBF_HEX4(0, trace, &q, sizeof(void *)); - sprintf(dbf_text, "pf%02x", q->first_to_check); - QDIO_DBF_TEXT4(0, trace, dbf_text); -#endif /* CONFIG_QDIO_DEBUG */ + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%3d", + q->first_to_check); return 1; } else { -#ifdef CONFIG_QDIO_DEBUG - QDIO_DBF_TEXT4(0, trace, "inqisntd"); - QDIO_DBF_HEX4(0, trace, &q, sizeof(void *)); - sprintf(dbf_text, "pf%02x", q->first_to_check); - QDIO_DBF_TEXT4(0, trace, dbf_text); -#endif /* CONFIG_QDIO_DEBUG */ + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in notd:%3d", + q->first_to_check); return 0; } } @@ -573,9 +586,6 @@ static int qdio_inbound_q_done(struct qdio_q *q) void qdio_kick_inbound_handler(struct qdio_q *q) { int count, start, end; -#ifdef CONFIG_QDIO_DEBUG - char dbf_text[15]; -#endif qdio_perf_stat_inc(&perf_stats.inbound_handler); @@ -586,10 +596,7 @@ void qdio_kick_inbound_handler(struct qdio_q *q) else count = end + QDIO_MAX_BUFFERS_PER_Q - start; -#ifdef CONFIG_QDIO_DEBUG - sprintf(dbf_text, "s=%2xc=%2x", start, count); - QDIO_DBF_TEXT4(0, trace, dbf_text); -#endif /* CONFIG_QDIO_DEBUG */ + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kih s:%3d c:%3d", start, count); if (unlikely(q->irq_ptr->state != QDIO_IRQ_STATE_ACTIVE)) return; @@ -655,14 +662,14 @@ check_next: if (q->first_to_check == stop) return q->first_to_check; - count = get_buf_states(q, q->first_to_check, &state, count); + count = get_buf_states(q, q->first_to_check, &state, count, 0); if (!count) return q->first_to_check; switch (state) { case SLSB_P_OUTPUT_EMPTY: /* the adapter got it */ - QDIO_DBF_TEXT5(0, trace, "outpempt"); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out empty:%1d %3d", q->nr, count); atomic_sub(count, &q->nr_buf_used); q->first_to_check = add_buf(q->first_to_check, count); @@ -674,16 +681,19 @@ check_next: break; goto check_next; case SLSB_P_OUTPUT_ERROR: - announce_buffer_error(q); + announce_buffer_error(q, count); /* process the buffer, the upper layer will take care of it */ q->first_to_check = add_buf(q->first_to_check, count); atomic_sub(count, &q->nr_buf_used); break; case SLSB_CU_OUTPUT_PRIMED: /* the adapter has not fetched the output yet */ - QDIO_DBF_TEXT5(0, trace, "outpprim"); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out primed:%1d", q->nr); break; case SLSB_P_OUTPUT_NOT_INIT: + WARN_ON(1); + q->first_to_check++; + break; case SLSB_P_OUTPUT_HALTED: break; default: @@ -706,8 +716,7 @@ static inline int qdio_outbound_q_moved(struct qdio_q *q) if ((bufnr != q->last_move_ftc) || q->qdio_error) { q->last_move_ftc = bufnr; - QDIO_DBF_TEXT4(0, trace, "oqhasmvd"); - QDIO_DBF_HEX4(0, trace, &q, sizeof(void *)); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out moved:%1d", q->nr); return 1; } else return 0; @@ -742,12 +751,8 @@ static inline int qdio_outbound_q_moved(struct qdio_q *q) static void qdio_kick_outbound_q(struct qdio_q *q) { int rc; -#ifdef CONFIG_QDIO_DEBUG - char dbf_text[15]; - QDIO_DBF_TEXT5(0, trace, "kickoutq"); - QDIO_DBF_HEX5(0, trace, &q, sizeof(void *)); -#endif /* CONFIG_QDIO_DEBUG */ + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kickoutq:%1d", q->nr); if (!need_siga_out(q)) return; @@ -756,15 +761,9 @@ static void qdio_kick_outbound_q(struct qdio_q *q) switch (rc) { case 0: /* TODO: improve error handling for CC=0 case */ -#ifdef CONFIG_QDIO_DEBUG - if (q->u.out.timestamp) { - QDIO_DBF_TEXT3(0, trace, "cc2reslv"); - sprintf(dbf_text, "%4x%2x%2x", q->irq_ptr->schid.sch_no, - q->nr, - atomic_read(&q->u.out.busy_siga_counter)); - QDIO_DBF_TEXT3(0, trace, dbf_text); - } -#endif /* CONFIG_QDIO_DEBUG */ + if (q->u.out.timestamp) + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "cc2 rslv:%4x", + atomic_read(&q->u.out.busy_siga_counter)); /* went smooth this time, reset timestamp */ q->u.out.timestamp = 0; break; @@ -781,12 +780,7 @@ static void qdio_kick_outbound_q(struct qdio_q *q) tasklet_schedule(&q->tasklet); break; } - QDIO_DBF_TEXT2(0, trace, "cc2REPRT"); -#ifdef CONFIG_QDIO_DEBUG - sprintf(dbf_text, "%4x%2x%2x", q->irq_ptr->schid.sch_no, q->nr, - atomic_read(&q->u.out.busy_siga_counter)); - QDIO_DBF_TEXT3(0, trace, dbf_text); -#endif /* CONFIG_QDIO_DEBUG */ + DBF_ERROR("%4x cc2 REP:%1d", SCH_NO(q), q->nr); default: /* for plain cc=1, 2 or 3 */ q->qdio_error = rc; @@ -796,9 +790,6 @@ static void qdio_kick_outbound_q(struct qdio_q *q) static void qdio_kick_outbound_handler(struct qdio_q *q) { int start, end, count; -#ifdef CONFIG_QDIO_DEBUG - char dbf_text[15]; -#endif start = q->first_to_kick; end = q->last_move_ftc; @@ -807,13 +798,8 @@ static void qdio_kick_outbound_handler(struct qdio_q *q) else count = end + QDIO_MAX_BUFFERS_PER_Q - start; -#ifdef CONFIG_QDIO_DEBUG - QDIO_DBF_TEXT4(0, trace, "kickouth"); - QDIO_DBF_HEX4(0, trace, &q, sizeof(void *)); - - sprintf(dbf_text, "s=%2xc=%2x", start, count); - QDIO_DBF_TEXT4(0, trace, dbf_text); -#endif /* CONFIG_QDIO_DEBUG */ + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kickouth: %1d", q->nr); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "s:%3d c:%3d", start, count); if (unlikely(q->irq_ptr->state != QDIO_IRQ_STATE_ACTIVE)) return; @@ -908,27 +894,18 @@ void qdio_check_outbound_after_thinint(struct qdio_q *q) static inline void qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state) { -#ifdef CONFIG_QDIO_DEBUG - char dbf_text[15]; - - QDIO_DBF_TEXT5(0, trace, "newstate"); - sprintf(dbf_text, "%4x%4x", irq_ptr->schid.sch_no, state); - QDIO_DBF_TEXT5(0, trace, dbf_text); -#endif /* CONFIG_QDIO_DEBUG */ + DBF_DEV_EVENT(DBF_INFO, irq_ptr, "newstate: %1d", state); irq_ptr->state = state; mb(); } -static void qdio_irq_check_sense(struct subchannel_id schid, struct irb *irb) +static void qdio_irq_check_sense(struct qdio_irq *irq_ptr, struct irb *irb) { - char dbf_text[15]; - if (irb->esw.esw0.erw.cons) { - sprintf(dbf_text, "sens%4x", schid.sch_no); - QDIO_DBF_TEXT2(1, trace, dbf_text); - QDIO_DBF_HEX0(0, trace, irb, 64); - QDIO_DBF_HEX0(0, trace, irb->ecw, 64); + DBF_ERROR("%4x sense:", irq_ptr->schid.sch_no); + DBF_ERROR_HEX(irb, 64); + DBF_ERROR_HEX(irb->ecw, 64); } } @@ -962,14 +939,10 @@ static void qdio_handle_activate_check(struct ccw_device *cdev, { struct qdio_irq *irq_ptr = cdev->private->qdio_data; struct qdio_q *q; - char dbf_text[15]; - QDIO_DBF_TEXT2(1, trace, "ick2"); - sprintf(dbf_text, "%s", dev_name(&cdev->dev)); - QDIO_DBF_TEXT2(1, trace, dbf_text); - QDIO_DBF_HEX2(0, trace, &intparm, sizeof(int)); - QDIO_DBF_HEX2(0, trace, &dstat, sizeof(int)); - QDIO_DBF_HEX2(0, trace, &cstat, sizeof(int)); + DBF_ERROR("%4x ACT CHECK", irq_ptr->schid.sch_no); + DBF_ERROR("intp :%lx", intparm); + DBF_ERROR("ds: %2x cs:%2x", dstat, cstat); if (irq_ptr->nr_input_qs) { q = irq_ptr->input_qs[0]; @@ -1022,28 +995,29 @@ static void qdio_int_error(struct ccw_device *cdev) } static int qdio_establish_check_errors(struct ccw_device *cdev, int cstat, - int dstat) + int dstat) { struct qdio_irq *irq_ptr = cdev->private->qdio_data; if (cstat || (dstat & ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END))) { - QDIO_DBF_TEXT2(1, setup, "eq:ckcon"); + DBF_ERROR("EQ:ck con"); goto error; } if (!(dstat & DEV_STAT_DEV_END)) { - QDIO_DBF_TEXT2(1, setup, "eq:no de"); + DBF_ERROR("EQ:no dev"); goto error; } if (dstat & ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) { - QDIO_DBF_TEXT2(1, setup, "eq:badio"); + DBF_ERROR("EQ: bad io"); goto error; } return 0; error: - QDIO_DBF_HEX2(0, trace, &cstat, sizeof(int)); - QDIO_DBF_HEX2(0, trace, &dstat, sizeof(int)); + DBF_ERROR("%4x EQ:error", irq_ptr->schid.sch_no); + DBF_ERROR("ds: %2x cs:%2x", dstat, cstat); + qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR); return 1; } @@ -1052,12 +1026,8 @@ static void qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat) { struct qdio_irq *irq_ptr = cdev->private->qdio_data; - char dbf_text[15]; - - sprintf(dbf_text, "qehi%4x", cdev->private->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); - QDIO_DBF_TEXT0(0, trace, dbf_text); + DBF_DEV_EVENT(DBF_INFO, irq_ptr, "qest irq"); if (!qdio_establish_check_errors(cdev, cstat, dstat)) qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ESTABLISHED); } @@ -1068,25 +1038,21 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm, { struct qdio_irq *irq_ptr = cdev->private->qdio_data; int cstat, dstat; - char dbf_text[15]; qdio_perf_stat_inc(&perf_stats.qdio_int); if (!intparm || !irq_ptr) { - sprintf(dbf_text, "qihd%4x", cdev->private->schid.sch_no); - QDIO_DBF_TEXT2(1, setup, dbf_text); + DBF_ERROR("qint:%4x", cdev->private->schid.sch_no); return; } if (IS_ERR(irb)) { switch (PTR_ERR(irb)) { case -EIO: - sprintf(dbf_text, "ierr%4x", irq_ptr->schid.sch_no); - QDIO_DBF_TEXT2(1, setup, dbf_text); + DBF_ERROR("%4x IO error", irq_ptr->schid.sch_no); return; case -ETIMEDOUT: - sprintf(dbf_text, "qtoh%4x", irq_ptr->schid.sch_no); - QDIO_DBF_TEXT2(1, setup, dbf_text); + DBF_ERROR("%4x IO timeout", irq_ptr->schid.sch_no); qdio_int_error(cdev); return; default: @@ -1094,7 +1060,7 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm, return; } } - qdio_irq_check_sense(irq_ptr->schid, irb); + qdio_irq_check_sense(irq_ptr, irb); cstat = irb->scsw.cmd.cstat; dstat = irb->scsw.cmd.dstat; @@ -1129,23 +1095,20 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm, /** * qdio_get_ssqd_desc - get qdio subchannel description * @cdev: ccw device to get description for + * @data: where to store the ssqd * - * Returns a pointer to the saved qdio subchannel description, - * or NULL for not setup qdio devices. + * Returns 0 or an error code. The results of the chsc are stored in the + * specified structure. */ -struct qdio_ssqd_desc *qdio_get_ssqd_desc(struct ccw_device *cdev) +int qdio_get_ssqd_desc(struct ccw_device *cdev, + struct qdio_ssqd_desc *data) { - struct qdio_irq *irq_ptr; - char dbf_text[15]; - sprintf(dbf_text, "qssq%4x", cdev->private->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); - - irq_ptr = cdev->private->qdio_data; - if (!irq_ptr) - return NULL; + if (!cdev || !cdev->private) + return -EINVAL; - return &irq_ptr->ssqd_desc; + DBF_EVENT("get ssqd:%4x", cdev->private->schid.sch_no); + return qdio_setup_get_ssqd(NULL, &cdev->private->schid, data); } EXPORT_SYMBOL_GPL(qdio_get_ssqd_desc); @@ -1159,14 +1122,9 @@ EXPORT_SYMBOL_GPL(qdio_get_ssqd_desc); */ int qdio_cleanup(struct ccw_device *cdev, int how) { - struct qdio_irq *irq_ptr; - char dbf_text[15]; + struct qdio_irq *irq_ptr = cdev->private->qdio_data; int rc; - sprintf(dbf_text, "qcln%4x", cdev->private->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); - - irq_ptr = cdev->private->qdio_data; if (!irq_ptr) return -ENODEV; @@ -1199,18 +1157,15 @@ static void qdio_shutdown_queues(struct ccw_device *cdev) */ int qdio_shutdown(struct ccw_device *cdev, int how) { - struct qdio_irq *irq_ptr; + struct qdio_irq *irq_ptr = cdev->private->qdio_data; int rc; unsigned long flags; - char dbf_text[15]; - - sprintf(dbf_text, "qshu%4x", cdev->private->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); - irq_ptr = cdev->private->qdio_data; if (!irq_ptr) return -ENODEV; + DBF_EVENT("qshutdown:%4x", cdev->private->schid.sch_no); + mutex_lock(&irq_ptr->setup_mutex); /* * Subchannel was already shot down. We cannot prevent being called @@ -1234,10 +1189,8 @@ int qdio_shutdown(struct ccw_device *cdev, int how) /* default behaviour is halt */ rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP); if (rc) { - sprintf(dbf_text, "sher%4x", irq_ptr->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); - sprintf(dbf_text, "rc=%d", rc); - QDIO_DBF_TEXT0(0, setup, dbf_text); + DBF_ERROR("%4x SHUTD ERR", irq_ptr->schid.sch_no); + DBF_ERROR("rc:%4d", rc); goto no_cleanup; } @@ -1271,17 +1224,18 @@ EXPORT_SYMBOL_GPL(qdio_shutdown); */ int qdio_free(struct ccw_device *cdev) { - struct qdio_irq *irq_ptr; - char dbf_text[15]; - - sprintf(dbf_text, "qfre%4x", cdev->private->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); + struct qdio_irq *irq_ptr = cdev->private->qdio_data; - irq_ptr = cdev->private->qdio_data; if (!irq_ptr) return -ENODEV; + DBF_EVENT("qfree:%4x", cdev->private->schid.sch_no); mutex_lock(&irq_ptr->setup_mutex); + + if (irq_ptr->debug_area != NULL) { + debug_unregister(irq_ptr->debug_area); + irq_ptr->debug_area = NULL; + } cdev->private->qdio_data = NULL; mutex_unlock(&irq_ptr->setup_mutex); @@ -1300,10 +1254,6 @@ EXPORT_SYMBOL_GPL(qdio_free); int qdio_initialize(struct qdio_initialize *init_data) { int rc; - char dbf_text[15]; - - sprintf(dbf_text, "qini%4x", init_data->cdev->private->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); rc = qdio_allocate(init_data); if (rc) @@ -1323,10 +1273,8 @@ EXPORT_SYMBOL_GPL(qdio_initialize); int qdio_allocate(struct qdio_initialize *init_data) { struct qdio_irq *irq_ptr; - char dbf_text[15]; - sprintf(dbf_text, "qalc%4x", init_data->cdev->private->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); + DBF_EVENT("qallocate:%4x", init_data->cdev->private->schid.sch_no); if ((init_data->no_input_qs && !init_data->input_handler) || (init_data->no_output_qs && !init_data->output_handler)) @@ -1340,16 +1288,13 @@ int qdio_allocate(struct qdio_initialize *init_data) (!init_data->output_sbal_addr_array)) return -EINVAL; - qdio_allocate_do_dbf(init_data); - /* irq_ptr must be in GFP_DMA since it contains ccw1.cda */ irq_ptr = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); if (!irq_ptr) goto out_err; - QDIO_DBF_TEXT0(0, setup, "irq_ptr:"); - QDIO_DBF_HEX0(0, setup, &irq_ptr, sizeof(void *)); mutex_init(&irq_ptr->setup_mutex); + qdio_allocate_dbf(init_data, irq_ptr); /* * Allocate a page for the chsc calls in qdio_establish. @@ -1367,9 +1312,6 @@ int qdio_allocate(struct qdio_initialize *init_data) goto out_rel; WARN_ON((unsigned long)irq_ptr->qdr & 0xfff); - QDIO_DBF_TEXT0(0, setup, "qdr:"); - QDIO_DBF_HEX0(0, setup, &irq_ptr->qdr, sizeof(void *)); - if (qdio_allocate_qs(irq_ptr, init_data->no_input_qs, init_data->no_output_qs)) goto out_rel; @@ -1390,14 +1332,12 @@ EXPORT_SYMBOL_GPL(qdio_allocate); */ int qdio_establish(struct qdio_initialize *init_data) { - char dbf_text[20]; struct qdio_irq *irq_ptr; struct ccw_device *cdev = init_data->cdev; unsigned long saveflags; int rc; - sprintf(dbf_text, "qest%4x", cdev->private->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); + DBF_EVENT("qestablish:%4x", cdev->private->schid.sch_no); irq_ptr = cdev->private->qdio_data; if (!irq_ptr) @@ -1427,10 +1367,8 @@ int qdio_establish(struct qdio_initialize *init_data) rc = ccw_device_start(cdev, &irq_ptr->ccw, QDIO_DOING_ESTABLISH, 0, 0); if (rc) { - sprintf(dbf_text, "eq:io%4x", irq_ptr->schid.sch_no); - QDIO_DBF_TEXT2(1, setup, dbf_text); - sprintf(dbf_text, "eq:rc%4x", rc); - QDIO_DBF_TEXT2(1, setup, dbf_text); + DBF_ERROR("%4x est IO ERR", irq_ptr->schid.sch_no); + DBF_ERROR("rc:%4x", rc); } spin_unlock_irqrestore(get_ccwdev_lock(cdev), saveflags); @@ -1451,10 +1389,8 @@ int qdio_establish(struct qdio_initialize *init_data) } qdio_setup_ssqd_info(irq_ptr); - sprintf(dbf_text, "qDmmwc%2x", irq_ptr->ssqd_desc.mmwc); - QDIO_DBF_TEXT2(0, setup, dbf_text); - sprintf(dbf_text, "qib ac%2x", irq_ptr->qib.ac); - QDIO_DBF_TEXT2(0, setup, dbf_text); + DBF_EVENT("qDmmwc:%2x", irq_ptr->ssqd_desc.mmwc); + DBF_EVENT("qib ac:%4x", irq_ptr->qib.ac); /* qebsm is now setup if available, initialize buffer states */ qdio_init_buf_states(irq_ptr); @@ -1475,10 +1411,8 @@ int qdio_activate(struct ccw_device *cdev) struct qdio_irq *irq_ptr; int rc; unsigned long saveflags; - char dbf_text[20]; - sprintf(dbf_text, "qact%4x", cdev->private->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); + DBF_EVENT("qactivate:%4x", cdev->private->schid.sch_no); irq_ptr = cdev->private->qdio_data; if (!irq_ptr) @@ -1504,10 +1438,8 @@ int qdio_activate(struct ccw_device *cdev) rc = ccw_device_start(cdev, &irq_ptr->ccw, QDIO_DOING_ACTIVATE, 0, DOIO_DENY_PREFETCH); if (rc) { - sprintf(dbf_text, "aq:io%4x", irq_ptr->schid.sch_no); - QDIO_DBF_TEXT2(1, setup, dbf_text); - sprintf(dbf_text, "aq:rc%4x", rc); - QDIO_DBF_TEXT2(1, setup, dbf_text); + DBF_ERROR("%4x act IO ERR", irq_ptr->schid.sch_no); + DBF_ERROR("rc:%4x", rc); } spin_unlock_irqrestore(get_ccwdev_lock(cdev), saveflags); @@ -1565,23 +1497,38 @@ static inline int buf_in_between(int bufnr, int start, int count) static void handle_inbound(struct qdio_q *q, unsigned int callflags, int bufnr, int count) { - unsigned long flags; - int used, rc; + int used, rc, diff; - /* - * do_QDIO could run in parallel with the queue tasklet so the - * upper-layer programm could empty the ACK'ed buffer here. - * If that happens we must clear the polling flag, otherwise - * qdio_stop_polling() could set the buffer to NOT_INIT after - * it was set to EMPTY which would kill us. - */ - spin_lock_irqsave(&q->u.in.lock, flags); - if (q->u.in.polling) - if (buf_in_between(q->last_move_ftc, bufnr, count)) + if (!q->u.in.polling) + goto set; + + /* protect against stop polling setting an ACK for an emptied slsb */ + if (count == QDIO_MAX_BUFFERS_PER_Q) { + /* overwriting everything, just delete polling status */ + q->u.in.polling = 0; + q->u.in.ack_count = 0; + goto set; + } else if (buf_in_between(q->last_move_ftc, bufnr, count)) { + if (is_qebsm(q)) { + /* partial overwrite, just update last_move_ftc */ + diff = add_buf(bufnr, count); + diff = sub_buf(diff, q->last_move_ftc); + q->u.in.ack_count -= diff; + if (q->u.in.ack_count <= 0) { + q->u.in.polling = 0; + q->u.in.ack_count = 0; + /* TODO: must we set last_move_ftc to something meaningful? */ + goto set; + } + q->last_move_ftc = add_buf(q->last_move_ftc, diff); + } + else + /* the only ACK will be deleted, so stop polling */ q->u.in.polling = 0; + } +set: count = set_buf_states(q, bufnr, SLSB_CU_INPUT_EMPTY, count); - spin_unlock_irqrestore(&q->u.in.lock, flags); used = atomic_add_return(count, &q->nr_buf_used) - count; BUG_ON(used + count > QDIO_MAX_BUFFERS_PER_Q); @@ -1649,11 +1596,11 @@ static void handle_outbound(struct qdio_q *q, unsigned int callflags, } /* try to fast requeue buffers */ - get_buf_state(q, prev_buf(bufnr), &state); + get_buf_state(q, prev_buf(bufnr), &state, 0); if (state != SLSB_CU_OUTPUT_PRIMED) qdio_kick_outbound_q(q); else { - QDIO_DBF_TEXT5(0, trace, "fast-req"); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "fast-req"); qdio_perf_stat_inc(&perf_stats.fast_requeue); } out: @@ -1673,12 +1620,6 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags, int q_nr, int bufnr, int count) { struct qdio_irq *irq_ptr; -#ifdef CONFIG_QDIO_DEBUG - char dbf_text[20]; - - sprintf(dbf_text, "doQD%4x", cdev->private->schid.sch_no); - QDIO_DBF_TEXT3(0, trace, dbf_text); -#endif /* CONFIG_QDIO_DEBUG */ if ((bufnr > QDIO_MAX_BUFFERS_PER_Q) || (count > QDIO_MAX_BUFFERS_PER_Q) || @@ -1692,33 +1633,24 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags, if (!irq_ptr) return -ENODEV; -#ifdef CONFIG_QDIO_DEBUG if (callflags & QDIO_FLAG_SYNC_INPUT) - QDIO_DBF_HEX3(0, trace, &irq_ptr->input_qs[q_nr], - sizeof(void *)); + DBF_DEV_EVENT(DBF_INFO, irq_ptr, "doQDIO input"); else - QDIO_DBF_HEX3(0, trace, &irq_ptr->output_qs[q_nr], - sizeof(void *)); - - sprintf(dbf_text, "flag%04x", callflags); - QDIO_DBF_TEXT3(0, trace, dbf_text); - sprintf(dbf_text, "qi%02xct%02x", bufnr, count); - QDIO_DBF_TEXT3(0, trace, dbf_text); -#endif /* CONFIG_QDIO_DEBUG */ + DBF_DEV_EVENT(DBF_INFO, irq_ptr, "doQDIO output"); + DBF_DEV_EVENT(DBF_INFO, irq_ptr, "q:%1d flag:%4x", q_nr, callflags); + DBF_DEV_EVENT(DBF_INFO, irq_ptr, "buf:%2d cnt:%3d", bufnr, count); if (irq_ptr->state != QDIO_IRQ_STATE_ACTIVE) return -EBUSY; if (callflags & QDIO_FLAG_SYNC_INPUT) - handle_inbound(irq_ptr->input_qs[q_nr], - callflags, bufnr, count); + handle_inbound(irq_ptr->input_qs[q_nr], callflags, bufnr, + count); else if (callflags & QDIO_FLAG_SYNC_OUTPUT) - handle_outbound(irq_ptr->output_qs[q_nr], - callflags, bufnr, count); - else { - QDIO_DBF_TEXT3(1, trace, "doQD:inv"); + handle_outbound(irq_ptr->output_qs[q_nr], callflags, bufnr, + count); + else return -EINVAL; - } return 0; } EXPORT_SYMBOL_GPL(do_QDIO); diff --git a/drivers/s390/cio/qdio_perf.c b/drivers/s390/cio/qdio_perf.c index ec5c4a414235..136d0f0b1e93 100644 --- a/drivers/s390/cio/qdio_perf.c +++ b/drivers/s390/cio/qdio_perf.c @@ -74,12 +74,20 @@ static int qdio_perf_proc_show(struct seq_file *m, void *v) seq_printf(m, "\n"); seq_printf(m, "Number of fast requeues (outg. SBAL w/o SIGA)\t: %li\n", (long)atomic_long_read(&perf_stats.fast_requeue)); + seq_printf(m, "Number of outbound target full condition\t: %li\n", + (long)atomic_long_read(&perf_stats.outbound_target_full)); seq_printf(m, "Number of outbound tasklet mod_timer calls\t: %li\n", (long)atomic_long_read(&perf_stats.debug_tl_out_timer)); seq_printf(m, "Number of stop polling calls\t\t\t: %li\n", (long)atomic_long_read(&perf_stats.debug_stop_polling)); seq_printf(m, "AI inbound tasklet loops after stop polling\t: %li\n", (long)atomic_long_read(&perf_stats.thinint_inbound_loop2)); + seq_printf(m, "QEBSM EQBS total/incomplete\t\t\t: %li/%li\n", + (long)atomic_long_read(&perf_stats.debug_eqbs_all), + (long)atomic_long_read(&perf_stats.debug_eqbs_incomplete)); + seq_printf(m, "QEBSM SQBS total/incomplete\t\t\t: %li/%li\n", + (long)atomic_long_read(&perf_stats.debug_sqbs_all), + (long)atomic_long_read(&perf_stats.debug_sqbs_incomplete)); seq_printf(m, "\n"); return 0; } diff --git a/drivers/s390/cio/qdio_perf.h b/drivers/s390/cio/qdio_perf.h index 5c406a8b7387..7821ac4fa517 100644 --- a/drivers/s390/cio/qdio_perf.h +++ b/drivers/s390/cio/qdio_perf.h @@ -36,10 +36,15 @@ struct qdio_perf_stats { atomic_long_t inbound_handler; atomic_long_t outbound_handler; atomic_long_t fast_requeue; + atomic_long_t outbound_target_full; /* for debugging */ atomic_long_t debug_tl_out_timer; atomic_long_t debug_stop_polling; + atomic_long_t debug_eqbs_all; + atomic_long_t debug_eqbs_incomplete; + atomic_long_t debug_sqbs_all; + atomic_long_t debug_sqbs_incomplete; }; extern struct qdio_perf_stats perf_stats; diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index a0b6b46e7466..18d54fc21ce9 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -120,14 +120,12 @@ static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr, } static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr, - void **sbals_array, char *dbf_text, int i) + void **sbals_array, int i) { struct qdio_q *prev; int j; - QDIO_DBF_TEXT0(0, setup, dbf_text); - QDIO_DBF_HEX0(0, setup, &q, sizeof(void *)); - + DBF_HEX(&q, sizeof(void *)); q->sl = (struct sl *)((char *)q->slib + PAGE_SIZE / 2); /* fill in sbal */ @@ -150,31 +148,26 @@ static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr, for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) q->sl->element[j].sbal = (unsigned long)q->sbal[j]; - QDIO_DBF_TEXT2(0, setup, "sl-sb-b0"); - QDIO_DBF_HEX2(0, setup, q->sl, sizeof(void *)); - QDIO_DBF_HEX2(0, setup, &q->slsb, sizeof(void *)); - QDIO_DBF_HEX2(0, setup, q->sbal, sizeof(void *)); + DBF_EVENT("sl-slsb-sbal"); + DBF_HEX(q->sl, sizeof(void *)); + DBF_HEX(&q->slsb, sizeof(void *)); + DBF_HEX(q->sbal, sizeof(void *)); } static void setup_queues(struct qdio_irq *irq_ptr, struct qdio_initialize *qdio_init) { - char dbf_text[20]; struct qdio_q *q; void **input_sbal_array = qdio_init->input_sbal_addr_array; void **output_sbal_array = qdio_init->output_sbal_addr_array; int i; - sprintf(dbf_text, "qset%4x", qdio_init->cdev->private->schid.sch_no); - QDIO_DBF_TEXT0(0, setup, dbf_text); - for_each_input_queue(irq_ptr, q, i) { - sprintf(dbf_text, "in-q%4x", i); + DBF_EVENT("in-q:%1d", i); setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i); q->is_input_q = 1; - spin_lock_init(&q->u.in.lock); - setup_storage_lists(q, irq_ptr, input_sbal_array, dbf_text, i); + setup_storage_lists(q, irq_ptr, input_sbal_array, i); input_sbal_array += QDIO_MAX_BUFFERS_PER_Q; if (is_thinint_irq(irq_ptr)) @@ -186,12 +179,11 @@ static void setup_queues(struct qdio_irq *irq_ptr, } for_each_output_queue(irq_ptr, q, i) { - sprintf(dbf_text, "outq%4x", i); + DBF_EVENT("outq:%1d", i); setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i); q->is_input_q = 0; - setup_storage_lists(q, irq_ptr, output_sbal_array, - dbf_text, i); + setup_storage_lists(q, irq_ptr, output_sbal_array, i); output_sbal_array += QDIO_MAX_BUFFERS_PER_Q; tasklet_init(&q->tasklet, qdio_outbound_processing, @@ -222,8 +214,6 @@ static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac) static void check_and_setup_qebsm(struct qdio_irq *irq_ptr, unsigned char qdioac, unsigned long token) { - char dbf_text[15]; - if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM)) goto no_qebsm; if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) || @@ -232,33 +222,41 @@ static void check_and_setup_qebsm(struct qdio_irq *irq_ptr, irq_ptr->sch_token = token; - QDIO_DBF_TEXT0(0, setup, "V=V:1"); - sprintf(dbf_text, "%8lx", irq_ptr->sch_token); - QDIO_DBF_TEXT0(0, setup, dbf_text); + DBF_EVENT("V=V:1"); + DBF_EVENT("%8lx", irq_ptr->sch_token); return; no_qebsm: irq_ptr->sch_token = 0; irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM; - QDIO_DBF_TEXT0(0, setup, "noV=V"); + DBF_EVENT("noV=V"); } -static int __get_ssqd_info(struct qdio_irq *irq_ptr) +/* + * If there is a qdio_irq we use the chsc_page and store the information + * in the qdio_irq, otherwise we copy it to the specified structure. + */ +int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr, + struct subchannel_id *schid, + struct qdio_ssqd_desc *data) { struct chsc_ssqd_area *ssqd; int rc; - QDIO_DBF_TEXT0(0, setup, "getssqd"); - ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page; + DBF_EVENT("getssqd:%4x", schid->sch_no); + if (irq_ptr != NULL) + ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page; + else + ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL); memset(ssqd, 0, PAGE_SIZE); ssqd->request = (struct chsc_header) { .length = 0x0010, .code = 0x0024, }; - ssqd->first_sch = irq_ptr->schid.sch_no; - ssqd->last_sch = irq_ptr->schid.sch_no; - ssqd->ssid = irq_ptr->schid.ssid; + ssqd->first_sch = schid->sch_no; + ssqd->last_sch = schid->sch_no; + ssqd->ssid = schid->ssid; if (chsc(ssqd)) return -EIO; @@ -268,27 +266,29 @@ static int __get_ssqd_info(struct qdio_irq *irq_ptr) if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) || !(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) || - (ssqd->qdio_ssqd.sch != irq_ptr->schid.sch_no)) + (ssqd->qdio_ssqd.sch != schid->sch_no)) return -EINVAL; - memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd, - sizeof(struct qdio_ssqd_desc)); + if (irq_ptr != NULL) + memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd, + sizeof(struct qdio_ssqd_desc)); + else { + memcpy(data, &ssqd->qdio_ssqd, + sizeof(struct qdio_ssqd_desc)); + free_page((unsigned long)ssqd); + } return 0; } void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr) { unsigned char qdioac; - char dbf_text[15]; int rc; - rc = __get_ssqd_info(irq_ptr); + rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, NULL); if (rc) { - QDIO_DBF_TEXT2(0, setup, "ssqdasig"); - sprintf(dbf_text, "schn%4x", irq_ptr->schid.sch_no); - QDIO_DBF_TEXT2(0, setup, dbf_text); - sprintf(dbf_text, "rc:%d", rc); - QDIO_DBF_TEXT2(0, setup, dbf_text); + DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no); + DBF_ERROR("rc:%x", rc); /* all flags set, worst case */ qdioac = AC1_SIGA_INPUT_NEEDED | AC1_SIGA_OUTPUT_NEEDED | AC1_SIGA_SYNC_NEEDED; @@ -297,9 +297,7 @@ void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr) check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token); process_ac_flags(irq_ptr, qdioac); - - sprintf(dbf_text, "qdioac%2x", qdioac); - QDIO_DBF_TEXT2(0, setup, dbf_text); + DBF_EVENT("qdioac:%4x", qdioac); } void qdio_release_memory(struct qdio_irq *irq_ptr) @@ -419,7 +417,7 @@ int qdio_setup_irq(struct qdio_initialize *init_data) /* get qdio commands */ ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE); if (!ciw) { - QDIO_DBF_TEXT2(1, setup, "no eq"); + DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no); rc = -EINVAL; goto out_err; } @@ -427,7 +425,7 @@ int qdio_setup_irq(struct qdio_initialize *init_data) ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE); if (!ciw) { - QDIO_DBF_TEXT2(1, setup, "no aq"); + DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no); rc = -EINVAL; goto out_err; } @@ -447,56 +445,38 @@ void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, { char s[80]; - sprintf(s, "qdio: %s ", dev_name(&cdev->dev)); - switch (irq_ptr->qib.qfmt) { - case QDIO_QETH_QFMT: - sprintf(s + strlen(s), "OSA "); - break; - case QDIO_ZFCP_QFMT: - sprintf(s + strlen(s), "ZFCP "); - break; - case QDIO_IQDIO_QFMT: - sprintf(s + strlen(s), "HS "); - break; - } - sprintf(s + strlen(s), "on SC %x using ", irq_ptr->schid.sch_no); - sprintf(s + strlen(s), "AI:%d ", is_thinint_irq(irq_ptr)); - sprintf(s + strlen(s), "QEBSM:%d ", (irq_ptr->sch_token) ? 1 : 0); - sprintf(s + strlen(s), "PCI:%d ", - (irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) ? 1 : 0); - sprintf(s + strlen(s), "TDD:%d ", css_general_characteristics.aif_tdd); - sprintf(s + strlen(s), "SIGA:"); - sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.input) ? "R" : " "); - sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.output) ? "W" : " "); - sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.sync) ? "S" : " "); - sprintf(s + strlen(s), "%s", - (!irq_ptr->siga_flag.no_sync_ti) ? "A" : " "); - sprintf(s + strlen(s), "%s", - (!irq_ptr->siga_flag.no_sync_out_ti) ? "O" : " "); - sprintf(s + strlen(s), "%s", - (!irq_ptr->siga_flag.no_sync_out_pci) ? "P" : " "); - sprintf(s + strlen(s), "\n"); + snprintf(s, 80, "qdio: %s %s on SC %x using " + "AI:%d QEBSM:%d PCI:%d TDD:%d SIGA:%s%s%s%s%s%s\n", + dev_name(&cdev->dev), + (irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" : + ((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"), + irq_ptr->schid.sch_no, + is_thinint_irq(irq_ptr), + (irq_ptr->sch_token) ? 1 : 0, + (irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) ? 1 : 0, + css_general_characteristics.aif_tdd, + (irq_ptr->siga_flag.input) ? "R" : " ", + (irq_ptr->siga_flag.output) ? "W" : " ", + (irq_ptr->siga_flag.sync) ? "S" : " ", + (!irq_ptr->siga_flag.no_sync_ti) ? "A" : " ", + (!irq_ptr->siga_flag.no_sync_out_ti) ? "O" : " ", + (!irq_ptr->siga_flag.no_sync_out_pci) ? "P" : " "); printk(KERN_INFO "%s", s); } int __init qdio_setup_init(void) { - char dbf_text[15]; - qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q), 256, 0, NULL); if (!qdio_q_cache) return -ENOMEM; /* Check for OSA/FCP thin interrupts (bit 67). */ - sprintf(dbf_text, "thini%1x", - (css_general_characteristics.aif_osa) ? 1 : 0); - QDIO_DBF_TEXT0(0, setup, dbf_text); + DBF_EVENT("thinint:%1d", + (css_general_characteristics.aif_osa) ? 1 : 0); /* Check for QEBSM support in general (bit 58). */ - sprintf(dbf_text, "cssQBS:%1x", - (qebsm_possible()) ? 1 : 0); - QDIO_DBF_TEXT0(0, setup, dbf_text); + DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0); return 0; } diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index ea7f61400267..8e90e147b746 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -125,13 +125,13 @@ void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr) static inline int tiqdio_inbound_q_done(struct qdio_q *q) { - unsigned char state; + unsigned char state = 0; if (!atomic_read(&q->nr_buf_used)) return 1; qdio_siga_sync_q(q); - get_buf_state(q, q->first_to_check, &state); + get_buf_state(q, q->first_to_check, &state, 0); if (state == SLSB_P_INPUT_PRIMED) /* more work coming */ @@ -258,8 +258,6 @@ static void tiqdio_thinint_handler(void *ind, void *drv_data) static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset) { struct scssc_area *scssc_area; - char dbf_text[15]; - void *ptr; int rc; scssc_area = (struct scssc_area *)irq_ptr->chsc_page; @@ -294,19 +292,15 @@ static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset) rc = chsc_error_from_response(scssc_area->response.code); if (rc) { - sprintf(dbf_text, "sidR%4x", scssc_area->response.code); - QDIO_DBF_TEXT1(0, trace, dbf_text); - QDIO_DBF_TEXT1(0, setup, dbf_text); - ptr = &scssc_area->response; - QDIO_DBF_HEX2(1, setup, &ptr, QDIO_DBF_SETUP_LEN); + DBF_ERROR("%4x SSI r:%4x", irq_ptr->schid.sch_no, + scssc_area->response.code); + DBF_ERROR_HEX(&scssc_area->response, sizeof(void *)); return rc; } - QDIO_DBF_TEXT2(0, setup, "setscind"); - QDIO_DBF_HEX2(0, setup, &scssc_area->summary_indicator_addr, - sizeof(unsigned long)); - QDIO_DBF_HEX2(0, setup, &scssc_area->subchannel_indicator_addr, - sizeof(unsigned long)); + DBF_EVENT("setscind"); + DBF_HEX(&scssc_area->summary_indicator_addr, sizeof(unsigned long)); + DBF_HEX(&scssc_area->subchannel_indicator_addr, sizeof(unsigned long)); return 0; } @@ -327,14 +321,11 @@ void tiqdio_free_memory(void) int __init tiqdio_register_thinints(void) { - char dbf_text[20]; - isc_register(QDIO_AIRQ_ISC); tiqdio_alsi = s390_register_adapter_interrupt(&tiqdio_thinint_handler, NULL, QDIO_AIRQ_ISC); if (IS_ERR(tiqdio_alsi)) { - sprintf(dbf_text, "regthn%lx", PTR_ERR(tiqdio_alsi)); - QDIO_DBF_TEXT0(0, setup, dbf_text); + DBF_EVENT("RTI:%lx", PTR_ERR(tiqdio_alsi)); tiqdio_alsi = NULL; isc_unregister(QDIO_AIRQ_ISC); return -ENOMEM; @@ -360,7 +351,7 @@ void qdio_setup_thinint(struct qdio_irq *irq_ptr) if (!is_thinint_irq(irq_ptr)) return; irq_ptr->dsci = get_indicator(); - QDIO_DBF_HEX1(0, setup, &irq_ptr->dsci, sizeof(void *)); + DBF_HEX(&irq_ptr->dsci, sizeof(void *)); } void qdio_shutdown_thinint(struct qdio_irq *irq_ptr) diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index e3fe6838293a..1f5f5d2d87d9 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -5,6 +5,7 @@ * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> * Martin Schwidefsky <schwidefsky@de.ibm.com> * Ralph Wuerthner <rwuerthn@de.ibm.com> + * Felix Beck <felix.beck@de.ibm.com> * * Adjunct processor bus. * @@ -23,6 +24,9 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#define KMSG_COMPONENT "ap" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/delay.h> @@ -34,6 +38,10 @@ #include <linux/mutex.h> #include <asm/s390_rdev.h> #include <asm/reset.h> +#include <asm/airq.h> +#include <asm/atomic.h> +#include <asm/system.h> +#include <asm/isc.h> #include <linux/hrtimer.h> #include <linux/ktime.h> @@ -46,6 +54,7 @@ static enum hrtimer_restart ap_poll_timeout(struct hrtimer *); static int ap_poll_thread_start(void); static void ap_poll_thread_stop(void); static void ap_request_timeout(unsigned long); +static inline void ap_schedule_poll_timer(void); /* * Module description. @@ -68,7 +77,7 @@ module_param_named(poll_thread, ap_thread_flag, int, 0000); MODULE_PARM_DESC(poll_thread, "Turn on/off poll thread, default is 0 (off)."); static struct device *ap_root_device = NULL; -static DEFINE_SPINLOCK(ap_device_lock); +static DEFINE_SPINLOCK(ap_device_list_lock); static LIST_HEAD(ap_device_list); /* @@ -80,19 +89,29 @@ static int ap_config_time = AP_CONFIG_TIME; static DECLARE_WORK(ap_config_work, ap_scan_bus); /* - * Tasklet & timer for AP request polling. + * Tasklet & timer for AP request polling and interrupts */ static DECLARE_TASKLET(ap_tasklet, ap_poll_all, 0); static atomic_t ap_poll_requests = ATOMIC_INIT(0); static DECLARE_WAIT_QUEUE_HEAD(ap_poll_wait); static struct task_struct *ap_poll_kthread = NULL; static DEFINE_MUTEX(ap_poll_thread_mutex); +static void *ap_interrupt_indicator; static struct hrtimer ap_poll_timer; /* In LPAR poll with 4kHz frequency. Poll every 250000 nanoseconds. * If z/VM change to 1500000 nanoseconds to adjust to z/VM polling.*/ static unsigned long long poll_timeout = 250000; /** + * ap_using_interrupts() - Returns non-zero if interrupt support is + * available. + */ +static inline int ap_using_interrupts(void) +{ + return ap_interrupt_indicator != NULL; +} + +/** * ap_intructions_available() - Test if AP instructions are available. * * Returns 0 if the AP instructions are installed. @@ -113,6 +132,23 @@ static inline int ap_instructions_available(void) } /** + * ap_interrupts_available(): Test if AP interrupts are available. + * + * Returns 1 if AP interrupts are available. + */ +static int ap_interrupts_available(void) +{ + unsigned long long facility_bits[2]; + + if (stfle(facility_bits, 2) <= 1) + return 0; + if (!(facility_bits[0] & (1ULL << 61)) || + !(facility_bits[1] & (1ULL << 62))) + return 0; + return 1; +} + +/** * ap_test_queue(): Test adjunct processor queue. * @qid: The AP queue number * @queue_depth: Pointer to queue depth value @@ -152,6 +188,80 @@ static inline struct ap_queue_status ap_reset_queue(ap_qid_t qid) return reg1; } +#ifdef CONFIG_64BIT +/** + * ap_queue_interruption_control(): Enable interruption for a specific AP. + * @qid: The AP queue number + * @ind: The notification indicator byte + * + * Returns AP queue status. + */ +static inline struct ap_queue_status +ap_queue_interruption_control(ap_qid_t qid, void *ind) +{ + register unsigned long reg0 asm ("0") = qid | 0x03000000UL; + register unsigned long reg1_in asm ("1") = 0x0000800000000000UL | AP_ISC; + register struct ap_queue_status reg1_out asm ("1"); + register void *reg2 asm ("2") = ind; + asm volatile( + ".long 0xb2af0000" /* PQAP(RAPQ) */ + : "+d" (reg0), "+d" (reg1_in), "=d" (reg1_out), "+d" (reg2) + : + : "cc" ); + return reg1_out; +} +#endif + +/** + * ap_queue_enable_interruption(): Enable interruption on an AP. + * @qid: The AP queue number + * @ind: the notification indicator byte + * + * Enables interruption on AP queue via ap_queue_interruption_control(). Based + * on the return value it waits a while and tests the AP queue if interrupts + * have been switched on using ap_test_queue(). + */ +static int ap_queue_enable_interruption(ap_qid_t qid, void *ind) +{ +#ifdef CONFIG_64BIT + struct ap_queue_status status; + int t_depth, t_device_type, rc, i; + + rc = -EBUSY; + status = ap_queue_interruption_control(qid, ind); + + for (i = 0; i < AP_MAX_RESET; i++) { + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + if (status.int_enabled) + return 0; + break; + case AP_RESPONSE_RESET_IN_PROGRESS: + case AP_RESPONSE_BUSY: + break; + case AP_RESPONSE_Q_NOT_AVAIL: + case AP_RESPONSE_DECONFIGURED: + case AP_RESPONSE_CHECKSTOPPED: + case AP_RESPONSE_INVALID_ADDRESS: + return -ENODEV; + case AP_RESPONSE_OTHERWISE_CHANGED: + if (status.int_enabled) + return 0; + break; + default: + break; + } + if (i < AP_MAX_RESET - 1) { + udelay(5); + status = ap_test_queue(qid, &t_depth, &t_device_type); + } + } + return rc; +#else + return -EINVAL; +#endif +} + /** * __ap_send(): Send message to adjunct processor queue. * @qid: The AP queue number @@ -295,6 +405,11 @@ static int ap_query_queue(ap_qid_t qid, int *queue_depth, int *device_type) case AP_RESPONSE_CHECKSTOPPED: rc = -ENODEV; break; + case AP_RESPONSE_INVALID_ADDRESS: + rc = -ENODEV; + break; + case AP_RESPONSE_OTHERWISE_CHANGED: + break; case AP_RESPONSE_BUSY: break; default: @@ -345,6 +460,15 @@ static int ap_init_queue(ap_qid_t qid) status = ap_test_queue(qid, &dummy, &dummy); } } + if (rc == 0 && ap_using_interrupts()) { + rc = ap_queue_enable_interruption(qid, ap_interrupt_indicator); + /* If interruption mode is supported by the machine, + * but an AP can not be enabled for interruption then + * the AP will be discarded. */ + if (rc) + pr_err("Registering adapter interrupts for " + "AP %d failed\n", AP_QID_DEVICE(qid)); + } return rc; } @@ -397,16 +521,16 @@ static ssize_t ap_hwtype_show(struct device *dev, struct ap_device *ap_dev = to_ap_dev(dev); return snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->device_type); } -static DEVICE_ATTR(hwtype, 0444, ap_hwtype_show, NULL); +static DEVICE_ATTR(hwtype, 0444, ap_hwtype_show, NULL); static ssize_t ap_depth_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ap_device *ap_dev = to_ap_dev(dev); return snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->queue_depth); } -static DEVICE_ATTR(depth, 0444, ap_depth_show, NULL); +static DEVICE_ATTR(depth, 0444, ap_depth_show, NULL); static ssize_t ap_request_count_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -509,9 +633,9 @@ static int ap_device_probe(struct device *dev) ap_dev->drv = ap_drv; rc = ap_drv->probe ? ap_drv->probe(ap_dev) : -ENODEV; if (!rc) { - spin_lock_bh(&ap_device_lock); + spin_lock_bh(&ap_device_list_lock); list_add(&ap_dev->list, &ap_device_list); - spin_unlock_bh(&ap_device_lock); + spin_unlock_bh(&ap_device_list_lock); } return rc; } @@ -553,9 +677,9 @@ static int ap_device_remove(struct device *dev) ap_flush_queue(ap_dev); del_timer_sync(&ap_dev->timeout); - spin_lock_bh(&ap_device_lock); + spin_lock_bh(&ap_device_list_lock); list_del_init(&ap_dev->list); - spin_unlock_bh(&ap_device_lock); + spin_unlock_bh(&ap_device_list_lock); if (ap_drv->remove) ap_drv->remove(ap_dev); spin_lock_bh(&ap_dev->lock); @@ -599,6 +723,14 @@ static ssize_t ap_config_time_show(struct bus_type *bus, char *buf) return snprintf(buf, PAGE_SIZE, "%d\n", ap_config_time); } +static ssize_t ap_interrupts_show(struct bus_type *bus, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%d\n", + ap_using_interrupts() ? 1 : 0); +} + +static BUS_ATTR(ap_interrupts, 0444, ap_interrupts_show, NULL); + static ssize_t ap_config_time_store(struct bus_type *bus, const char *buf, size_t count) { @@ -653,7 +785,8 @@ static ssize_t poll_timeout_store(struct bus_type *bus, const char *buf, ktime_t hr_time; /* 120 seconds = maximum poll interval */ - if (sscanf(buf, "%llu\n", &time) != 1 || time < 1 || time > 120000000000) + if (sscanf(buf, "%llu\n", &time) != 1 || time < 1 || + time > 120000000000ULL) return -EINVAL; poll_timeout = time; hr_time = ktime_set(0, poll_timeout); @@ -672,6 +805,7 @@ static struct bus_attribute *const ap_bus_attrs[] = { &bus_attr_ap_domain, &bus_attr_config_time, &bus_attr_poll_thread, + &bus_attr_ap_interrupts, &bus_attr_poll_timeout, NULL, }; @@ -814,6 +948,11 @@ out: return rc; } +static void ap_interrupt_handler(void *unused1, void *unused2) +{ + tasklet_schedule(&ap_tasklet); +} + /** * __ap_scan_bus(): Scan the AP bus. * @dev: Pointer to device @@ -928,6 +1067,8 @@ ap_config_timeout(unsigned long ptr) */ static inline void ap_schedule_poll_timer(void) { + if (ap_using_interrupts()) + return; if (hrtimer_is_queued(&ap_poll_timer)) return; hrtimer_start(&ap_poll_timer, ktime_set(0, poll_timeout), @@ -1181,7 +1322,7 @@ static void ap_reset(struct ap_device *ap_dev) ap_dev->unregistered = 1; } -static int __ap_poll_all(struct ap_device *ap_dev, unsigned long *flags) +static int __ap_poll_device(struct ap_device *ap_dev, unsigned long *flags) { spin_lock(&ap_dev->lock); if (!ap_dev->unregistered) { @@ -1207,13 +1348,19 @@ static void ap_poll_all(unsigned long dummy) unsigned long flags; struct ap_device *ap_dev; + /* Reset the indicator if interrupts are used. Thus new interrupts can + * be received. Doing it in the beginning of the tasklet is therefor + * important that no requests on any AP get lost. + */ + if (ap_using_interrupts()) + xchg((u8 *)ap_interrupt_indicator, 0); do { flags = 0; - spin_lock(&ap_device_lock); + spin_lock(&ap_device_list_lock); list_for_each_entry(ap_dev, &ap_device_list, list) { - __ap_poll_all(ap_dev, &flags); + __ap_poll_device(ap_dev, &flags); } - spin_unlock(&ap_device_lock); + spin_unlock(&ap_device_list_lock); } while (flags & 1); if (flags & 2) ap_schedule_poll_timer(); @@ -1253,11 +1400,11 @@ static int ap_poll_thread(void *data) remove_wait_queue(&ap_poll_wait, &wait); flags = 0; - spin_lock_bh(&ap_device_lock); + spin_lock_bh(&ap_device_list_lock); list_for_each_entry(ap_dev, &ap_device_list, list) { - __ap_poll_all(ap_dev, &flags); + __ap_poll_device(ap_dev, &flags); } - spin_unlock_bh(&ap_device_lock); + spin_unlock_bh(&ap_device_list_lock); } set_current_state(TASK_RUNNING); remove_wait_queue(&ap_poll_wait, &wait); @@ -1268,6 +1415,8 @@ static int ap_poll_thread_start(void) { int rc; + if (ap_using_interrupts()) + return 0; mutex_lock(&ap_poll_thread_mutex); if (!ap_poll_kthread) { ap_poll_kthread = kthread_run(ap_poll_thread, NULL, "appoll"); @@ -1301,8 +1450,12 @@ static void ap_request_timeout(unsigned long data) { struct ap_device *ap_dev = (struct ap_device *) data; - if (ap_dev->reset == AP_RESET_ARMED) + if (ap_dev->reset == AP_RESET_ARMED) { ap_dev->reset = AP_RESET_DO; + + if (ap_using_interrupts()) + tasklet_schedule(&ap_tasklet); + } } static void ap_reset_domain(void) @@ -1337,14 +1490,25 @@ int __init ap_module_init(void) int rc, i; if (ap_domain_index < -1 || ap_domain_index >= AP_DOMAINS) { - printk(KERN_WARNING "Invalid param: domain = %d. " - " Not loading.\n", ap_domain_index); + pr_warning("%d is not a valid cryptographic domain\n", + ap_domain_index); return -EINVAL; } if (ap_instructions_available() != 0) { - printk(KERN_WARNING "AP instructions not installed.\n"); + pr_warning("The hardware system does not support " + "AP instructions\n"); return -ENODEV; } + if (ap_interrupts_available()) { + isc_register(AP_ISC); + ap_interrupt_indicator = s390_register_adapter_interrupt( + &ap_interrupt_handler, NULL, AP_ISC); + if (IS_ERR(ap_interrupt_indicator)) { + ap_interrupt_indicator = NULL; + isc_unregister(AP_ISC); + } + } + register_reset_call(&ap_reset_call); /* Create /sys/bus/ap. */ @@ -1408,6 +1572,10 @@ out_bus: bus_unregister(&ap_bus_type); out: unregister_reset_call(&ap_reset_call); + if (ap_using_interrupts()) { + s390_unregister_adapter_interrupt(ap_interrupt_indicator, AP_ISC); + isc_unregister(AP_ISC); + } return rc; } @@ -1443,6 +1611,10 @@ void ap_module_exit(void) bus_remove_file(&ap_bus_type, ap_bus_attrs[i]); bus_unregister(&ap_bus_type); unregister_reset_call(&ap_reset_call); + if (ap_using_interrupts()) { + s390_unregister_adapter_interrupt(ap_interrupt_indicator, AP_ISC); + isc_unregister(AP_ISC); + } } #ifndef CONFIG_ZCRYPT_MONOLITHIC diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index 446378b308fc..a35362241805 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -5,6 +5,7 @@ * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> * Martin Schwidefsky <schwidefsky@de.ibm.com> * Ralph Wuerthner <rwuerthn@de.ibm.com> + * Felix Beck <felix.beck@de.ibm.com> * * Adjunct processor bus header file. * @@ -67,7 +68,8 @@ struct ap_queue_status { unsigned int queue_empty : 1; unsigned int replies_waiting : 1; unsigned int queue_full : 1; - unsigned int pad1 : 5; + unsigned int pad1 : 4; + unsigned int int_enabled : 1; unsigned int response_code : 8; unsigned int pad2 : 16; }; @@ -78,6 +80,8 @@ struct ap_queue_status { #define AP_RESPONSE_DECONFIGURED 0x03 #define AP_RESPONSE_CHECKSTOPPED 0x04 #define AP_RESPONSE_BUSY 0x05 +#define AP_RESPONSE_INVALID_ADDRESS 0x06 +#define AP_RESPONSE_OTHERWISE_CHANGED 0x07 #define AP_RESPONSE_Q_FULL 0x10 #define AP_RESPONSE_NO_PENDING_REPLY 0x10 #define AP_RESPONSE_INDEX_TOO_BIG 0x11 diff --git a/drivers/s390/net/ctcm_fsms.c b/drivers/s390/net/ctcm_fsms.c index 42776550acfd..f29c7086fc19 100644 --- a/drivers/s390/net/ctcm_fsms.c +++ b/drivers/s390/net/ctcm_fsms.c @@ -13,6 +13,9 @@ #undef DEBUGDATA #undef DEBUGCCW +#define KMSG_COMPONENT "ctcm" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> @@ -190,21 +193,22 @@ static void ctcmpc_chx_send_sweep(fsm_instance *fsm, int event, void *arg); void ctcm_ccw_check_rc(struct channel *ch, int rc, char *msg) { CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR, - "%s(%s): %s: %04x\n", - CTCM_FUNTAIL, ch->id, msg, rc); + "%s(%s): %s: %04x\n", + CTCM_FUNTAIL, ch->id, msg, rc); switch (rc) { case -EBUSY: - ctcm_pr_warn("%s (%s): Busy !\n", ch->id, msg); + pr_info("%s: The communication peer is busy\n", + ch->id); fsm_event(ch->fsm, CTC_EVENT_IO_EBUSY, ch); break; case -ENODEV: - ctcm_pr_emerg("%s (%s): Invalid device called for IO\n", - ch->id, msg); + pr_err("%s: The specified target device is not valid\n", + ch->id); fsm_event(ch->fsm, CTC_EVENT_IO_ENODEV, ch); break; default: - ctcm_pr_emerg("%s (%s): Unknown error in do_IO %04x\n", - ch->id, msg, rc); + pr_err("An I/O operation resulted in error %04x\n", + rc); fsm_event(ch->fsm, CTC_EVENT_IO_UNKNOWN, ch); } } @@ -886,8 +890,15 @@ static void ctcm_chx_rxiniterr(fsm_instance *fi, int event, void *arg) fsm_newstate(fi, CTC_STATE_RXERR); fsm_event(priv->fsm, DEV_EVENT_RXDOWN, dev); } - } else - ctcm_pr_warn("%s: Error during RX init handshake\n", dev->name); + } else { + CTCM_DBF_TEXT_(ERROR, CTC_DBF_ERROR, + "%s(%s): %s in %s", CTCM_FUNTAIL, ch->id, + ctc_ch_event_names[event], fsm_getstate_str(fi)); + + dev_warn(&dev->dev, + "Initialization failed with RX/TX init handshake " + "error %s\n", ctc_ch_event_names[event]); + } } /** @@ -969,7 +980,9 @@ static void ctcm_chx_txiniterr(fsm_instance *fi, int event, void *arg) "%s(%s): %s in %s", CTCM_FUNTAIL, ch->id, ctc_ch_event_names[event], fsm_getstate_str(fi)); - ctcm_pr_warn("%s: Error during TX init handshake\n", dev->name); + dev_warn(&dev->dev, + "Initialization failed with RX/TX init handshake " + "error %s\n", ctc_ch_event_names[event]); } } @@ -2101,14 +2114,11 @@ static void dev_action_restart(fsm_instance *fi, int event, void *arg) CTCMY_DBF_DEV_NAME(TRACE, dev, ""); if (IS_MPC(priv)) { - ctcm_pr_info("ctcm: %s Restarting Device and " - "MPC Group in 5 seconds\n", - dev->name); restart_timer = CTCM_TIME_1_SEC; } else { - ctcm_pr_info("%s: Restarting\n", dev->name); restart_timer = CTCM_TIME_5_SEC; } + dev_info(&dev->dev, "Restarting device\n"); dev_action_stop(fi, event, arg); fsm_event(priv->fsm, DEV_EVENT_STOP, dev); @@ -2150,16 +2160,16 @@ static void dev_action_chup(fsm_instance *fi, int event, void *arg) case DEV_STATE_STARTWAIT_RX: if (event == DEV_EVENT_RXUP) { fsm_newstate(fi, DEV_STATE_RUNNING); - ctcm_pr_info("%s: connected with remote side\n", - dev->name); + dev_info(&dev->dev, + "Connected with remote side\n"); ctcm_clear_busy(dev); } break; case DEV_STATE_STARTWAIT_TX: if (event == DEV_EVENT_TXUP) { fsm_newstate(fi, DEV_STATE_RUNNING); - ctcm_pr_info("%s: connected with remote side\n", - dev->name); + dev_info(&dev->dev, + "Connected with remote side\n"); ctcm_clear_busy(dev); } break; diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c index a4e29836a2aa..2678573becec 100644 --- a/drivers/s390/net/ctcm_main.c +++ b/drivers/s390/net/ctcm_main.c @@ -21,6 +21,9 @@ #undef DEBUGDATA #undef DEBUGCCW +#define KMSG_COMPONENT "ctcm" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> @@ -281,14 +284,16 @@ static long ctcm_check_irb_error(struct ccw_device *cdev, struct irb *irb) switch (PTR_ERR(irb)) { case -EIO: - ctcm_pr_warn("i/o-error on device %s\n", dev_name(&cdev->dev)); + dev_err(&cdev->dev, + "An I/O-error occurred on the CTCM device\n"); break; case -ETIMEDOUT: - ctcm_pr_warn("timeout on device %s\n", dev_name(&cdev->dev)); + dev_err(&cdev->dev, + "An adapter hardware operation timed out\n"); break; default: - ctcm_pr_warn("unknown error %ld on device %s\n", - PTR_ERR(irb), dev_name(&cdev->dev)); + dev_err(&cdev->dev, + "An error occurred on the adapter hardware\n"); } return PTR_ERR(irb); } @@ -309,15 +314,17 @@ static inline void ccw_unit_check(struct channel *ch, __u8 sense) if (sense & SNS0_INTERVENTION_REQ) { if (sense & 0x01) { if (ch->sense_rc != 0x01) { - ctcm_pr_debug("%s: Interface disc. or Sel. " - "reset (remote)\n", ch->id); + pr_notice( + "%s: The communication peer has " + "disconnected\n", ch->id); ch->sense_rc = 0x01; } fsm_event(ch->fsm, CTC_EVENT_UC_RCRESET, ch); } else { if (ch->sense_rc != SNS0_INTERVENTION_REQ) { - ctcm_pr_debug("%s: System reset (remote)\n", - ch->id); + pr_notice( + "%s: The remote operating system is " + "not available\n", ch->id); ch->sense_rc = SNS0_INTERVENTION_REQ; } fsm_event(ch->fsm, CTC_EVENT_UC_RSRESET, ch); @@ -1194,8 +1201,11 @@ static void ctcm_irq_handler(struct ccw_device *cdev, /* Check for unsolicited interrupts. */ if (cgdev == NULL) { - ctcm_pr_warn("ctcm: Got unsolicited irq: c-%02x d-%02x\n", - cstat, dstat); + CTCM_DBF_TEXT_(TRACE, CTC_DBF_ERROR, + "%s(%s) unsolicited irq: c-%02x d-%02x\n", + CTCM_FUNTAIL, dev_name(&cdev->dev), cstat, dstat); + dev_warn(&cdev->dev, + "The adapter received a non-specific IRQ\n"); return; } @@ -1207,31 +1217,34 @@ static void ctcm_irq_handler(struct ccw_device *cdev, else if (priv->channel[WRITE]->cdev == cdev) ch = priv->channel[WRITE]; else { - ctcm_pr_err("ctcm: Can't determine channel for interrupt, " - "device %s\n", dev_name(&cdev->dev)); + dev_err(&cdev->dev, + "%s: Internal error: Can't determine channel for " + "interrupt device %s\n", + __func__, dev_name(&cdev->dev)); + /* Explain: inconsistent internal structures */ return; } dev = ch->netdev; if (dev == NULL) { - ctcm_pr_crit("ctcm: %s dev=NULL bus_id=%s, ch=0x%p\n", - __func__, dev_name(&cdev->dev), ch); + dev_err(&cdev->dev, + "%s Internal error: net_device is NULL, ch = 0x%p\n", + __func__, ch); + /* Explain: inconsistent internal structures */ return; } - CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG, - "%s(%s): int. for %s: cstat=%02x dstat=%02x", - CTCM_FUNTAIL, dev->name, ch->id, cstat, dstat); - /* Copy interruption response block. */ memcpy(ch->irb, irb, sizeof(struct irb)); + /* Issue error message and return on subchannel error code */ if (irb->scsw.cmd.cstat) { - /* Check for good subchannel return code, otherwise error message */ fsm_event(ch->fsm, CTC_EVENT_SC_UNKNOWN, ch); - ctcm_pr_warn("%s: subchannel check for dev: %s - %02x %02x\n", - dev->name, ch->id, irb->scsw.cmd.cstat, - irb->scsw.cmd.dstat); + CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN, + "%s(%s): sub-ch check %s: cs=%02x ds=%02x", + CTCM_FUNTAIL, dev->name, ch->id, cstat, dstat); + dev_warn(&cdev->dev, + "A check occurred on the subchannel\n"); return; } @@ -1239,7 +1252,7 @@ static void ctcm_irq_handler(struct ccw_device *cdev, if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { if ((irb->ecw[0] & ch->sense_rc) == 0) /* print it only once */ - CTCM_DBF_TEXT_(TRACE, CTC_DBF_INFO, + CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN, "%s(%s): sense=%02x, ds=%02x", CTCM_FUNTAIL, ch->id, irb->ecw[0], dstat); ccw_unit_check(ch, irb->ecw[0]); @@ -1574,6 +1587,11 @@ static int ctcm_new_device(struct ccwgroup_device *cgdev) strlcpy(priv->fsm->name, dev->name, sizeof(priv->fsm->name)); + dev_info(&dev->dev, + "setup OK : r/w = %s/%s, protocol : %d\n", + priv->channel[READ]->id, + priv->channel[WRITE]->id, priv->protocol); + CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO, "setup(%s) OK : r/w = %s/%s, protocol : %d", dev->name, priv->channel[READ]->id, @@ -1687,7 +1705,7 @@ static void __exit ctcm_exit(void) { unregister_cu3088_discipline(&ctcm_group_driver); ctcm_unregister_dbf_views(); - ctcm_pr_info("CTCM driver unloaded\n"); + pr_info("CTCM driver unloaded\n"); } /* @@ -1695,7 +1713,7 @@ static void __exit ctcm_exit(void) */ static void print_banner(void) { - printk(KERN_INFO "CTCM driver initialized\n"); + pr_info("CTCM driver initialized\n"); } /** @@ -1717,8 +1735,8 @@ static int __init ctcm_init(void) ret = register_cu3088_discipline(&ctcm_group_driver); if (ret) { ctcm_unregister_dbf_views(); - ctcm_pr_crit("ctcm_init failed with register_cu3088_discipline " - "(rc = %d)\n", ret); + pr_err("%s / register_cu3088_discipline failed, ret = %d\n", + __func__, ret); return ret; } print_banner(); diff --git a/drivers/s390/net/ctcm_main.h b/drivers/s390/net/ctcm_main.h index d77cce3fe4d4..d925e732b7d8 100644 --- a/drivers/s390/net/ctcm_main.h +++ b/drivers/s390/net/ctcm_main.h @@ -41,12 +41,6 @@ #define LOG_FLAG_NOMEM 8 #define ctcm_pr_debug(fmt, arg...) printk(KERN_DEBUG fmt, ##arg) -#define ctcm_pr_info(fmt, arg...) printk(KERN_INFO fmt, ##arg) -#define ctcm_pr_notice(fmt, arg...) printk(KERN_NOTICE fmt, ##arg) -#define ctcm_pr_warn(fmt, arg...) printk(KERN_WARNING fmt, ##arg) -#define ctcm_pr_emerg(fmt, arg...) printk(KERN_EMERG fmt, ##arg) -#define ctcm_pr_err(fmt, arg...) printk(KERN_ERR fmt, ##arg) -#define ctcm_pr_crit(fmt, arg...) printk(KERN_CRIT fmt, ##arg) #define CTCM_PR_DEBUG(fmt, arg...) \ do { \ diff --git a/drivers/s390/net/ctcm_mpc.c b/drivers/s390/net/ctcm_mpc.c index 19f5d5ed85e0..3db5f846bbf6 100644 --- a/drivers/s390/net/ctcm_mpc.c +++ b/drivers/s390/net/ctcm_mpc.c @@ -19,6 +19,9 @@ #undef DEBUGDATA #undef DEBUGCCW +#define KMSG_COMPONENT "ctcm" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> @@ -386,7 +389,7 @@ int ctc_mpc_alloc_channel(int port_num, void (*callback)(int, int)) if (grp->allocchan_callback_retries < 4) { if (grp->allochanfunc) grp->allochanfunc(grp->port_num, - grp->group_max_buflen); + grp->group_max_buflen); } else { /* there are problems...bail out */ /* there may be a state mismatch so restart */ @@ -1232,8 +1235,9 @@ done: dev_kfree_skb_any(pskb); if (sendrc == NET_RX_DROP) { - printk(KERN_WARNING "%s %s() NETWORK BACKLOG EXCEEDED" - " - PACKET DROPPED\n", dev->name, __func__); + dev_warn(&dev->dev, + "The network backlog for %s is exceeded, " + "package dropped\n", __func__); fsm_event(grp->fsm, MPCG_EVENT_INOP, dev); } @@ -1670,10 +1674,11 @@ static int mpc_validate_xid(struct mpcg_info *mpcginfo) CTCM_FUNTAIL, ch->id); } } - done: if (rc) { - ctcm_pr_info("ctcmpc : %s() failed\n", __func__); + dev_warn(&dev->dev, + "The XID used in the MPC protocol is not valid, " + "rc = %d\n", rc); priv->xid->xid2_flag2 = 0x40; grp->saved_xid2->xid2_flag2 = 0x40; } diff --git a/drivers/s390/net/ctcm_sysfs.c b/drivers/s390/net/ctcm_sysfs.c index bb2d13721d34..8452bb052d68 100644 --- a/drivers/s390/net/ctcm_sysfs.c +++ b/drivers/s390/net/ctcm_sysfs.c @@ -10,6 +10,9 @@ #undef DEBUGDATA #undef DEBUGCCW +#define KMSG_COMPONENT "ctcm" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/sysfs.h> #include "ctcm_main.h" diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c index 0825be87e5a0..afa8337734d1 100644 --- a/drivers/s390/net/lcs.c +++ b/drivers/s390/net/lcs.c @@ -26,6 +26,9 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#define KMSG_COMPONENT "lcs" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/if.h> #include <linux/netdevice.h> @@ -54,8 +57,6 @@ #error Cannot compile lcs.c without some net devices switched on. #endif -#define PRINTK_HEADER " lcs: " - /** * initialization string for output */ @@ -96,7 +97,7 @@ lcs_register_debug_facility(void) lcs_dbf_setup = debug_register("lcs_setup", 2, 1, 8); lcs_dbf_trace = debug_register("lcs_trace", 4, 1, 8); if (lcs_dbf_setup == NULL || lcs_dbf_trace == NULL) { - PRINT_ERR("Not enough memory for debug facility.\n"); + pr_err("Not enough memory for debug facility.\n"); lcs_unregister_debug_facility(); return -ENOMEM; } @@ -503,7 +504,9 @@ lcs_start_channel(struct lcs_channel *channel) if (rc) { LCS_DBF_TEXT_(4,trace,"essh%s", dev_name(&channel->ccwdev->dev)); - PRINT_ERR("Error in starting channel, rc=%d!\n", rc); + dev_err(&channel->ccwdev->dev, + "Starting an LCS device resulted in an error," + " rc=%d!\n", rc); } return rc; } @@ -640,7 +643,9 @@ __lcs_resume_channel(struct lcs_channel *channel) if (rc) { LCS_DBF_TEXT_(4, trace, "ersc%s", dev_name(&channel->ccwdev->dev)); - PRINT_ERR("Error in lcs_resume_channel: rc=%d\n",rc); + dev_warn(&channel->ccwdev->dev, + "Sending data from the LCS device to the LAN failed" + " with rc=%d\n",rc); } else channel->state = LCS_CH_STATE_RUNNING; return rc; @@ -1086,7 +1091,7 @@ lcs_check_multicast_support(struct lcs_card *card) cmd->cmd.lcs_qipassist.num_ip_pairs = 1; rc = lcs_send_lancmd(card, buffer, __lcs_check_multicast_cb); if (rc != 0) { - PRINT_ERR("Query IPAssist failed. Assuming unsupported!\n"); + pr_err("Query IPAssist failed. Assuming unsupported!\n"); return -EOPNOTSUPP; } if (card->ip_assists_supported & LCS_IPASS_MULTICAST_SUPPORT) @@ -1119,8 +1124,8 @@ list_modified: rc = lcs_send_setipm(card, ipm); spin_lock_irqsave(&card->ipm_lock, flags); if (rc) { - PRINT_INFO("Adding multicast address failed. " - "Table possibly full!\n"); + pr_info("Adding multicast address failed." + " Table possibly full!\n"); /* store ipm in failed list -> will be added * to ipm_list again, so a retry will be done * during the next call of this function */ @@ -1231,8 +1236,8 @@ lcs_set_mc_addresses(struct lcs_card *card, struct in_device *in4_dev) ipm = (struct lcs_ipm_list *) kzalloc(sizeof(struct lcs_ipm_list), GFP_ATOMIC); if (ipm == NULL) { - PRINT_INFO("Not enough memory to add " - "new multicast entry!\n"); + pr_info("Not enough memory to add" + " new multicast entry!\n"); break; } memcpy(&ipm->ipm.mac_addr, buf, LCS_MAC_LENGTH); @@ -1306,18 +1311,21 @@ lcs_check_irb_error(struct ccw_device *cdev, struct irb *irb) switch (PTR_ERR(irb)) { case -EIO: - PRINT_WARN("i/o-error on device %s\n", dev_name(&cdev->dev)); + dev_warn(&cdev->dev, + "An I/O-error occurred on the LCS device\n"); LCS_DBF_TEXT(2, trace, "ckirberr"); LCS_DBF_TEXT_(2, trace, " rc%d", -EIO); break; case -ETIMEDOUT: - PRINT_WARN("timeout on device %s\n", dev_name(&cdev->dev)); + dev_warn(&cdev->dev, + "A command timed out on the LCS device\n"); LCS_DBF_TEXT(2, trace, "ckirberr"); LCS_DBF_TEXT_(2, trace, " rc%d", -ETIMEDOUT); break; default: - PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb), - dev_name(&cdev->dev)); + dev_warn(&cdev->dev, + "An error occurred on the LCS device, rc=%ld\n", + PTR_ERR(irb)); LCS_DBF_TEXT(2, trace, "ckirberr"); LCS_DBF_TEXT(2, trace, " rc???"); } @@ -1403,8 +1411,10 @@ lcs_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) /* Check for channel and device errors presented */ rc = lcs_get_problem(cdev, irb); if (rc || (dstat & DEV_STAT_UNIT_EXCEP)) { - PRINT_WARN("check on device %s, dstat=0x%X, cstat=0x%X \n", - dev_name(&cdev->dev), dstat, cstat); + dev_warn(&cdev->dev, + "The LCS device stopped because of an error," + " dstat=0x%X, cstat=0x%X \n", + dstat, cstat); if (rc) { channel->state = LCS_CH_STATE_ERROR; } @@ -1761,8 +1771,8 @@ lcs_get_control(struct lcs_card *card, struct lcs_cmd *cmd) lcs_schedule_recovery(card); break; case LCS_CMD_STOPLAN: - PRINT_WARN("Stoplan for %s initiated by LGW.\n", - card->dev->name); + pr_warning("Stoplan for %s initiated by LGW.\n", + card->dev->name); if (card->dev) netif_carrier_off(card->dev); break; @@ -1790,7 +1800,8 @@ lcs_get_skb(struct lcs_card *card, char *skb_data, unsigned int skb_len) skb = dev_alloc_skb(skb_len); if (skb == NULL) { - PRINT_ERR("LCS: alloc_skb failed for device=%s\n", + dev_err(&card->dev->dev, + " Allocating a socket buffer to interface %s failed\n", card->dev->name); card->stats.rx_dropped++; return; @@ -1886,7 +1897,8 @@ lcs_stop_device(struct net_device *dev) (card->write.state != LCS_CH_STATE_RUNNING)); rc = lcs_stopcard(card); if (rc) - PRINT_ERR("Try it again!\n "); + dev_err(&card->dev->dev, + " Shutting down the LCS device failed\n "); return rc; } @@ -1905,7 +1917,7 @@ lcs_open_device(struct net_device *dev) /* initialize statistics */ rc = lcs_detect(card); if (rc) { - PRINT_ERR("LCS:Error in opening device!\n"); + pr_err("Error in opening device!\n"); } else { dev->flags |= IFF_UP; @@ -2113,8 +2125,9 @@ lcs_new_device(struct ccwgroup_device *ccwgdev) rc = lcs_detect(card); if (rc) { LCS_DBF_TEXT(2, setup, "dtctfail"); - PRINT_WARN("Detection of LCS card failed with return code " - "%d (0x%x)\n", rc, rc); + dev_warn(&card->dev->dev, + "Detecting a network adapter for LCS devices" + " failed with rc=%d (0x%x)\n", rc, rc); lcs_stopcard(card); goto out; } @@ -2144,7 +2157,7 @@ lcs_new_device(struct ccwgroup_device *ccwgdev) #endif default: LCS_DBF_TEXT(3, setup, "errinit"); - PRINT_ERR("LCS: Initialization failed\n"); + pr_err(" Initialization failed\n"); goto out; } if (!dev) @@ -2176,13 +2189,13 @@ netdev_out: goto out; /* Print out supported assists: IPv6 */ - PRINT_INFO("LCS device %s %s IPv6 support\n", card->dev->name, - (card->ip_assists_supported & LCS_IPASS_IPV6_SUPPORT) ? - "with" : "without"); + pr_info("LCS device %s %s IPv6 support\n", card->dev->name, + (card->ip_assists_supported & LCS_IPASS_IPV6_SUPPORT) ? + "with" : "without"); /* Print out supported assist: Multicast */ - PRINT_INFO("LCS device %s %s Multicast support\n", card->dev->name, - (card->ip_assists_supported & LCS_IPASS_MULTICAST_SUPPORT) ? - "with" : "without"); + pr_info("LCS device %s %s Multicast support\n", card->dev->name, + (card->ip_assists_supported & LCS_IPASS_MULTICAST_SUPPORT) ? + "with" : "without"); return 0; out: @@ -2248,15 +2261,16 @@ lcs_recovery(void *ptr) return 0; LCS_DBF_TEXT(4, trace, "recover2"); gdev = card->gdev; - PRINT_WARN("Recovery of device %s started...\n", dev_name(&gdev->dev)); + dev_warn(&gdev->dev, + "A recovery process has been started for the LCS device\n"); rc = __lcs_shutdown_device(gdev, 1); rc = lcs_new_device(gdev); if (!rc) - PRINT_INFO("Device %s successfully recovered!\n", - card->dev->name); + pr_info("Device %s successfully recovered!\n", + card->dev->name); else - PRINT_INFO("Device %s could not be recovered!\n", - card->dev->name); + pr_info("Device %s could not be recovered!\n", + card->dev->name); lcs_clear_thread_running_bit(card, LCS_RECOVERY_THREAD); return 0; } @@ -2308,17 +2322,17 @@ __init lcs_init_module(void) { int rc; - PRINT_INFO("Loading %s\n",version); + pr_info("Loading %s\n", version); rc = lcs_register_debug_facility(); LCS_DBF_TEXT(0, setup, "lcsinit"); if (rc) { - PRINT_ERR("Initialization failed\n"); + pr_err("Initialization failed\n"); return rc; } rc = register_cu3088_discipline(&lcs_group_driver); if (rc) { - PRINT_ERR("Initialization failed\n"); + pr_err("Initialization failed\n"); return rc; } return 0; @@ -2331,7 +2345,7 @@ __init lcs_init_module(void) static void __exit lcs_cleanup_module(void) { - PRINT_INFO("Terminating lcs module.\n"); + pr_info("Terminating lcs module.\n"); LCS_DBF_TEXT(0, trace, "cleanup"); unregister_cu3088_discipline(&lcs_group_driver); lcs_unregister_debug_facility(); diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c index 0fea51e34b57..930e2fc2a011 100644 --- a/drivers/s390/net/netiucv.c +++ b/drivers/s390/net/netiucv.c @@ -31,6 +31,9 @@ * */ +#define KMSG_COMPONENT "netiucv" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #undef DEBUG #include <linux/module.h> @@ -846,7 +849,8 @@ static void conn_action_connsever(fsm_instance *fi, int event, void *arg) fsm_deltimer(&conn->timer); iucv_path_sever(conn->path, NULL); - PRINT_INFO("%s: Remote dropped connection\n", netdev->name); + dev_info(privptr->dev, "The peer interface of the IUCV device" + " has closed the connection\n"); IUCV_DBF_TEXT(data, 2, "conn_action_connsever: Remote dropped connection\n"); fsm_newstate(fi, CONN_STATE_STARTWAIT); @@ -856,13 +860,15 @@ static void conn_action_connsever(fsm_instance *fi, int event, void *arg) static void conn_action_start(fsm_instance *fi, int event, void *arg) { struct iucv_connection *conn = arg; + struct net_device *netdev = conn->netdev; + struct netiucv_priv *privptr = netdev_priv(netdev); int rc; IUCV_DBF_TEXT(trace, 3, __func__); fsm_newstate(fi, CONN_STATE_STARTWAIT); IUCV_DBF_TEXT_(setup, 2, "%s('%s'): connecting ...\n", - conn->netdev->name, conn->userid); + netdev->name, conn->userid); /* * We must set the state before calling iucv_connect because the @@ -876,41 +882,45 @@ static void conn_action_start(fsm_instance *fi, int event, void *arg) NULL, iucvMagic, conn); switch (rc) { case 0: - conn->netdev->tx_queue_len = conn->path->msglim; + netdev->tx_queue_len = conn->path->msglim; fsm_addtimer(&conn->timer, NETIUCV_TIMEOUT_5SEC, CONN_EVENT_TIMER, conn); return; case 11: - PRINT_INFO("%s: User %s is currently not available.\n", - conn->netdev->name, - netiucv_printname(conn->userid)); + dev_warn(privptr->dev, + "The IUCV device failed to connect to z/VM guest %s\n", + netiucv_printname(conn->userid)); fsm_newstate(fi, CONN_STATE_STARTWAIT); break; case 12: - PRINT_INFO("%s: User %s is currently not ready.\n", - conn->netdev->name, - netiucv_printname(conn->userid)); + dev_warn(privptr->dev, + "The IUCV device failed to connect to the peer on z/VM" + " guest %s\n", netiucv_printname(conn->userid)); fsm_newstate(fi, CONN_STATE_STARTWAIT); break; case 13: - PRINT_WARN("%s: Too many IUCV connections.\n", - conn->netdev->name); + dev_err(privptr->dev, + "Connecting the IUCV device would exceed the maximum" + " number of IUCV connections\n"); fsm_newstate(fi, CONN_STATE_CONNERR); break; case 14: - PRINT_WARN("%s: User %s has too many IUCV connections.\n", - conn->netdev->name, - netiucv_printname(conn->userid)); + dev_err(privptr->dev, + "z/VM guest %s has too many IUCV connections" + " to connect with the IUCV device\n", + netiucv_printname(conn->userid)); fsm_newstate(fi, CONN_STATE_CONNERR); break; case 15: - PRINT_WARN("%s: No IUCV authorization in CP directory.\n", - conn->netdev->name); + dev_err(privptr->dev, + "The IUCV device cannot connect to a z/VM guest with no" + " IUCV authorization\n"); fsm_newstate(fi, CONN_STATE_CONNERR); break; default: - PRINT_WARN("%s: iucv_connect returned error %d\n", - conn->netdev->name, rc); + dev_err(privptr->dev, + "Connecting the IUCV device failed with error %d\n", + rc); fsm_newstate(fi, CONN_STATE_CONNERR); break; } @@ -1059,8 +1069,9 @@ dev_action_connup(fsm_instance *fi, int event, void *arg) switch (fsm_getstate(fi)) { case DEV_STATE_STARTWAIT: fsm_newstate(fi, DEV_STATE_RUNNING); - PRINT_INFO("%s: connected with remote side %s\n", - dev->name, privptr->conn->userid); + dev_info(privptr->dev, + "The IUCV device has been connected" + " successfully to %s\n", privptr->conn->userid); IUCV_DBF_TEXT(setup, 3, "connection is up and running\n"); break; @@ -1982,6 +1993,8 @@ static ssize_t conn_write(struct device_driver *drv, if (rc) goto out_unreg; + dev_info(priv->dev, "The IUCV interface to %s has been" + " established successfully\n", netiucv_printname(username)); return count; @@ -2027,10 +2040,9 @@ static ssize_t remove_write (struct device_driver *drv, continue; read_unlock_bh(&iucv_connection_rwlock); if (ndev->flags & (IFF_UP | IFF_RUNNING)) { - PRINT_WARN("netiucv: net device %s active with peer " - "%s\n", ndev->name, priv->conn->userid); - PRINT_WARN("netiucv: %s cannot be removed\n", - ndev->name); + dev_warn(dev, "The IUCV device is connected" + " to %s and cannot be removed\n", + priv->conn->userid); IUCV_DBF_TEXT(data, 2, "remove_write: still active\n"); return -EPERM; } @@ -2062,7 +2074,7 @@ static struct attribute_group *netiucv_drv_attr_groups[] = { static void netiucv_banner(void) { - PRINT_INFO("NETIUCV driver initialized\n"); + pr_info("driver initialized\n"); } static void __exit netiucv_exit(void) @@ -2088,7 +2100,7 @@ static void __exit netiucv_exit(void) iucv_unregister(&netiucv_handler, 1); iucv_unregister_dbf_views(); - PRINT_INFO("NETIUCV driver unloaded\n"); + pr_info("driver unloaded\n"); return; } diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index af6d60458513..d5ccce1643e4 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -31,11 +31,10 @@ #include <asm/qdio.h> #include <asm/ccwdev.h> #include <asm/ccwgroup.h> +#include <asm/sysinfo.h> #include "qeth_core_mpc.h" -#define KMSG_COMPONENT "qeth" - /** * Debug Facility stuff */ @@ -74,11 +73,6 @@ struct qeth_dbf_info { #define QETH_DBF_TEXT_(name, level, text...) \ qeth_dbf_longtext(QETH_DBF_##name, level, text) -/** - * some more debug stuff - */ -#define PRINTK_HEADER "qeth: " - #define SENSE_COMMAND_REJECT_BYTE 0 #define SENSE_COMMAND_REJECT_FLAG 0x80 #define SENSE_RESETTING_EVENT_BYTE 1 @@ -733,6 +727,7 @@ struct qeth_card { struct qeth_osn_info osn_info; struct qeth_discipline discipline; atomic_t force_alloc_skb; + struct service_level qeth_service_level; }; struct qeth_card_list_struct { diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 52d26592c72c..bbd6788e8270 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -8,6 +8,9 @@ * Frank Blaschka <frank.blaschka@de.ibm.com> */ +#define KMSG_COMPONENT "qeth" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/string.h> @@ -319,7 +322,10 @@ static int qeth_issue_next_read(struct qeth_card *card) return -EIO; iob = qeth_get_buffer(&card->read); if (!iob) { - PRINT_WARN("issue_next_read failed: no iob available!\n"); + dev_warn(&card->gdev->dev, "The qeth device driver " + "failed to recover an error on the device\n"); + QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " + "available\n", dev_name(&card->gdev->dev)); return -ENOMEM; } qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); @@ -327,7 +333,8 @@ static int qeth_issue_next_read(struct qeth_card *card) rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, (addr_t) iob, 0, 0); if (rc) { - PRINT_ERR("Error in starting next read ccw! rc=%i\n", rc); + QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " + "rc=%i\n", dev_name(&card->gdev->dev), rc); atomic_set(&card->read.irq_pending, 0); qeth_schedule_recovery(card); wake_up(&card->wait_q); @@ -393,10 +400,9 @@ static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, } else { switch (cmd->hdr.command) { case IPA_CMD_STOPLAN: - PRINT_WARN("Link failure on %s (CHPID 0x%X) - " - "there is a network problem or " - "someone pulled the cable or " - "disabled the port.\n", + dev_warn(&card->gdev->dev, + "The link for interface %s on CHPID" + " 0x%X failed\n", QETH_CARD_IFNAME(card), card->info.chpid); card->lan_online = 0; @@ -404,9 +410,9 @@ static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, netif_carrier_off(card->dev); return NULL; case IPA_CMD_STARTLAN: - PRINT_INFO("Link reestablished on %s " - "(CHPID 0x%X). Scheduling " - "IP address reset.\n", + dev_info(&card->gdev->dev, + "The link for %s on CHPID 0x%X has" + " been restored\n", QETH_CARD_IFNAME(card), card->info.chpid); netif_carrier_on(card->dev); @@ -458,7 +464,7 @@ static int qeth_check_idx_response(unsigned char *buffer) QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); if ((buffer[2] & 0xc0) == 0xc0) { - PRINT_WARN("received an IDX TERMINATE " + QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " "with cause code 0x%02x%s\n", buffer[4], ((buffer[4] == 0x22) ? @@ -744,8 +750,10 @@ static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { QETH_DBF_TEXT(TRACE, 2, "CGENCHK"); - PRINT_WARN("check on device %s, dstat=x%x, cstat=x%x ", - dev_name(&cdev->dev), dstat, cstat); + dev_warn(&cdev->dev, "The qeth device driver " + "failed to recover an error on the device\n"); + QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x ", + dev_name(&cdev->dev), dstat, cstat); print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 16, 1, irb, 64, 1); return 1; @@ -784,12 +792,14 @@ static long __qeth_check_irb_error(struct ccw_device *cdev, switch (PTR_ERR(irb)) { case -EIO: - PRINT_WARN("i/o-error on device %s\n", dev_name(&cdev->dev)); + QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", + dev_name(&cdev->dev)); QETH_DBF_TEXT(TRACE, 2, "ckirberr"); QETH_DBF_TEXT_(TRACE, 2, " rc%d", -EIO); break; case -ETIMEDOUT: - PRINT_WARN("timeout on device %s\n", dev_name(&cdev->dev)); + dev_warn(&cdev->dev, "A hardware operation timed out" + " on the device\n"); QETH_DBF_TEXT(TRACE, 2, "ckirberr"); QETH_DBF_TEXT_(TRACE, 2, " rc%d", -ETIMEDOUT); if (intparm == QETH_RCD_PARM) { @@ -802,8 +812,8 @@ static long __qeth_check_irb_error(struct ccw_device *cdev, } break; default: - PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb), - dev_name(&cdev->dev)); + QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", + dev_name(&cdev->dev), PTR_ERR(irb)); QETH_DBF_TEXT(TRACE, 2, "ckirberr"); QETH_DBF_TEXT(TRACE, 2, " rc???"); } @@ -869,10 +879,12 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, (dstat & DEV_STAT_UNIT_CHECK) || (cstat)) { if (irb->esw.esw0.erw.cons) { - /* TODO: we should make this s390dbf */ - PRINT_WARN("sense data available on channel %s.\n", - CHANNEL_ID(channel)); - PRINT_WARN(" cstat 0x%X\n dstat 0x%X\n", cstat, dstat); + dev_warn(&channel->ccwdev->dev, + "The qeth device driver failed to recover " + "an error on the device\n"); + QETH_DBF_MESSAGE(2, "%s sense data available. cstat " + "0x%X dstat 0x%X\n", + dev_name(&channel->ccwdev->dev), cstat, dstat); print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); print_hex_dump(KERN_WARNING, "qeth: sense data ", @@ -1138,6 +1150,14 @@ static int qeth_setup_card(struct qeth_card *card) return 0; } +static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) +{ + struct qeth_card *card = container_of(slr, struct qeth_card, + qeth_service_level); + seq_printf(m, "qeth: %s firmware level %s\n", CARD_BUS_ID(card), + card->info.mcl_level); +} + static struct qeth_card *qeth_alloc_card(void) { struct qeth_card *card; @@ -1157,6 +1177,8 @@ static struct qeth_card *qeth_alloc_card(void) return NULL; } card->options.layer2 = -1; + card->qeth_service_level.seq_print = qeth_core_sl_print; + register_service_level(&card->qeth_service_level); return card; } @@ -1175,8 +1197,8 @@ static int qeth_determine_card_type(struct qeth_card *card) card->qdio.no_out_queues = known_devices[i][8]; card->info.is_multicast_different = known_devices[i][9]; if (qeth_is_1920_device(card)) { - PRINT_INFO("Priority Queueing not able " - "due to hardware limitations!\n"); + dev_info(&card->gdev->dev, + "Priority Queueing not supported\n"); card->qdio.no_out_queues = 1; card->qdio.default_out_queue = 0; } @@ -1185,7 +1207,8 @@ static int qeth_determine_card_type(struct qeth_card *card) i++; } card->info.type = QETH_CARD_TYPE_UNKNOWN; - PRINT_ERR("unknown card type on device %s\n", CARD_BUS_ID(card)); + dev_err(&card->gdev->dev, "The adapter hardware is of an " + "unknown type\n"); return -ENOENT; } @@ -1368,8 +1391,8 @@ static int qeth_get_unitaddr(struct qeth_card *card) QETH_DBF_TEXT(SETUP, 2, "getunit"); rc = qeth_read_conf_data(card, (void **) &prcd, &length); if (rc) { - PRINT_ERR("qeth_read_conf_data for device %s returned %i\n", - CARD_DDEV_ID(card), rc); + QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", + dev_name(&card->gdev->dev), rc); return rc; } card->info.chpid = prcd[30]; @@ -1519,7 +1542,10 @@ static int qeth_idx_activate_channel(struct qeth_channel *channel, if (rc == -ERESTARTSYS) return rc; if (channel->state != CH_STATE_ACTIVATING) { - PRINT_WARN("IDX activate timed out!\n"); + dev_warn(&channel->ccwdev->dev, "The qeth device driver" + " failed to recover an error on the device\n"); + QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", + dev_name(&channel->ccwdev->dev)); QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); qeth_clear_cmd_buffers(channel); return -ETIME; @@ -1552,20 +1578,21 @@ static void qeth_idx_write_cb(struct qeth_channel *channel, if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19) - PRINT_ERR("IDX_ACTIVATE on write channel device %s: " - "adapter exclusively used by another host\n", - CARD_WDEV_ID(card)); + dev_err(&card->write.ccwdev->dev, + "The adapter is used exclusively by another " + "host\n"); else - PRINT_ERR("IDX_ACTIVATE on write channel device %s: " - "negative reply\n", CARD_WDEV_ID(card)); + QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" + " negative reply\n", + dev_name(&card->write.ccwdev->dev)); goto out; } memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { - PRINT_WARN("IDX_ACTIVATE on write channel device %s: " - "function level mismatch " - "(sent: 0x%x, received: 0x%x)\n", - CARD_WDEV_ID(card), card->info.func_level, temp); + QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " + "function level mismatch (sent: 0x%x, received: " + "0x%x)\n", dev_name(&card->write.ccwdev->dev), + card->info.func_level, temp); goto out; } channel->state = CH_STATE_UP; @@ -1591,12 +1618,13 @@ static void qeth_idx_read_cb(struct qeth_channel *channel, if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19) - PRINT_ERR("IDX_ACTIVATE on read channel device %s: " - "adapter exclusively used by another host\n", - CARD_RDEV_ID(card)); + dev_err(&card->write.ccwdev->dev, + "The adapter is used exclusively by another " + "host\n"); else - PRINT_ERR("IDX_ACTIVATE on read channel device %s: " - "negative reply\n", CARD_RDEV_ID(card)); + QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" + " negative reply\n", + dev_name(&card->read.ccwdev->dev)); goto out; } @@ -1610,9 +1638,10 @@ static void qeth_idx_read_cb(struct qeth_channel *channel, memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); if (temp != qeth_peer_func_level(card->info.func_level)) { - PRINT_WARN("IDX_ACTIVATE on read channel device %s: function " - "level mismatch (sent: 0x%x, received: 0x%x)\n", - CARD_RDEV_ID(card), card->info.func_level, temp); + QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " + "level mismatch (sent: 0x%x, received: 0x%x)\n", + dev_name(&card->read.ccwdev->dev), + card->info.func_level, temp); goto out; } memcpy(&card->token.issuer_rm_r, @@ -1686,8 +1715,9 @@ int qeth_send_control_data(struct qeth_card *card, int len, (addr_t) iob, 0, 0); spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); if (rc) { - PRINT_WARN("qeth_send_control_data: " - "ccw_device_start rc = %i\n", rc); + QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " + "ccw_device_start rc = %i\n", + dev_name(&card->write.ccwdev->dev), rc); QETH_DBF_TEXT_(TRACE, 2, " err%d", rc); spin_lock_irqsave(&card->lock, flags); list_del_init(&reply->list); @@ -2170,11 +2200,8 @@ static void qeth_print_status_with_portname(struct qeth_card *card) dbf_text[i] = (char) _ebcasc[(__u8) dbf_text[i]]; dbf_text[8] = 0; - PRINT_INFO("Device %s/%s/%s is a%s card%s%s%s\n" + dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n" "with link type %s (portname: %s)\n", - CARD_RDEV_ID(card), - CARD_WDEV_ID(card), - CARD_DDEV_ID(card), qeth_get_cardname(card), (card->info.mcl_level[0]) ? " (level: " : "", (card->info.mcl_level[0]) ? card->info.mcl_level : "", @@ -2187,23 +2214,17 @@ static void qeth_print_status_with_portname(struct qeth_card *card) static void qeth_print_status_no_portname(struct qeth_card *card) { if (card->info.portname[0]) - PRINT_INFO("Device %s/%s/%s is a%s " + dev_info(&card->gdev->dev, "Device is a%s " "card%s%s%s\nwith link type %s " "(no portname needed by interface).\n", - CARD_RDEV_ID(card), - CARD_WDEV_ID(card), - CARD_DDEV_ID(card), qeth_get_cardname(card), (card->info.mcl_level[0]) ? " (level: " : "", (card->info.mcl_level[0]) ? card->info.mcl_level : "", (card->info.mcl_level[0]) ? ")" : "", qeth_get_cardname_short(card)); else - PRINT_INFO("Device %s/%s/%s is a%s " + dev_info(&card->gdev->dev, "Device is a%s " "card%s%s%s\nwith link type %s.\n", - CARD_RDEV_ID(card), - CARD_WDEV_ID(card), - CARD_DDEV_ID(card), qeth_get_cardname(card), (card->info.mcl_level[0]) ? " (level: " : "", (card->info.mcl_level[0]) ? card->info.mcl_level : "", @@ -2630,9 +2651,8 @@ void qeth_queue_input_buffer(struct qeth_card *card, int index) qeth_get_micros() - card->perf_stats.inbound_do_qdio_start_time; if (rc) { - PRINT_WARN("qeth_queue_input_buffer's do_QDIO " - "return %i (device %s).\n", - rc, CARD_DDEV_ID(card)); + dev_warn(&card->gdev->dev, + "QDIO reported an error, rc=%i\n", rc); QETH_DBF_TEXT(TRACE, 2, "qinberr"); QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card)); } @@ -3730,6 +3750,7 @@ static void qeth_core_free_card(struct qeth_card *card) free_netdev(card->dev); kfree(card->ip_tbd_list); qeth_free_qdio_buffers(card); + unregister_service_level(&card->qeth_service_level); kfree(card); } @@ -3757,7 +3778,7 @@ static int qeth_core_driver_group(const char *buf, struct device *root_dev, int qeth_core_hardsetup_card(struct qeth_card *card) { - struct qdio_ssqd_desc *qdio_ssqd; + struct qdio_ssqd_desc *ssqd; int retries = 3; int mpno = 0; int rc; @@ -3766,7 +3787,8 @@ int qeth_core_hardsetup_card(struct qeth_card *card) atomic_set(&card->force_alloc_skb, 0); retry: if (retries < 3) { - PRINT_WARN("Retrying to do IDX activates.\n"); + QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", + dev_name(&card->gdev->dev)); ccw_device_set_offline(CARD_DDEV(card)); ccw_device_set_offline(CARD_WDEV(card)); ccw_device_set_offline(CARD_RDEV(card)); @@ -3792,9 +3814,16 @@ retry: return rc; } - qdio_ssqd = qdio_get_ssqd_desc(CARD_DDEV(card)); - if (qdio_ssqd) - mpno = qdio_ssqd->pcnt; + ssqd = kmalloc(sizeof(struct qdio_ssqd_desc), GFP_KERNEL); + if (!ssqd) { + rc = -ENOMEM; + goto out; + } + rc = qdio_get_ssqd_desc(CARD_DDEV(card), ssqd); + if (rc == 0) + mpno = ssqd->pcnt; + kfree(ssqd); + if (mpno) mpno = min(mpno - 1, QETH_MAX_PORTNO); if (card->info.portno > mpno) { @@ -3834,7 +3863,10 @@ retry: } return 0; out: - PRINT_ERR("Initialization in hardsetup failed! rc=%d\n", rc); + dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " + "an error on the device\n"); + QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", + dev_name(&card->gdev->dev), rc); return rc; } EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); @@ -4054,8 +4086,8 @@ int qeth_core_load_discipline(struct qeth_card *card, break; } if (!card->discipline.ccwgdriver) { - PRINT_ERR("Support for discipline %d not present\n", - discipline); + dev_err(&card->gdev->dev, "There is no kernel module to " + "support discipline %d\n", discipline); rc = -EINVAL; } return rc; @@ -4448,7 +4480,7 @@ static int __init qeth_core_init(void) { int rc; - PRINT_INFO("loading core functions\n"); + pr_info("loading core functions\n"); INIT_LIST_HEAD(&qeth_core_card_list.list); rwlock_init(&qeth_core_card_list.rwlock); @@ -4488,9 +4520,10 @@ driver_err: ccwgroup_err: ccw_driver_unregister(&qeth_ccw_driver); ccw_err: + QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc); qeth_unregister_dbf_views(); out_err: - PRINT_ERR("Initialization failed with code %d\n", rc); + pr_err("Initializing the qeth device driver failed\n"); return rc; } @@ -4503,7 +4536,7 @@ static void __exit qeth_core_exit(void) ccw_driver_unregister(&qeth_ccw_driver); kmem_cache_destroy(qeth_core_header_cache); qeth_unregister_dbf_views(); - PRINT_INFO("core functions removed\n"); + pr_info("core functions removed\n"); } module_init(qeth_core_init); diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 1b1e80336d2c..af15bc648ba1 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -8,6 +8,9 @@ * Frank Blaschka <frank.blaschka@de.ibm.com> */ +#define KMSG_COMPONENT "qeth" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/string.h> @@ -503,12 +506,13 @@ static int qeth_l2_send_setmac_cb(struct qeth_card *card, card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac, OSA_ADDR_LEN); - PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x " - "successfully registered on device %s\n", - card->dev->dev_addr[0], card->dev->dev_addr[1], - card->dev->dev_addr[2], card->dev->dev_addr[3], - card->dev->dev_addr[4], card->dev->dev_addr[5], - card->dev->name); + dev_info(&card->gdev->dev, + "MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x " + "successfully registered on device %s\n", + card->dev->dev_addr[0], card->dev->dev_addr[1], + card->dev->dev_addr[2], card->dev->dev_addr[3], + card->dev->dev_addr[4], card->dev->dev_addr[5], + card->dev->name); } return 0; } @@ -1015,9 +1019,8 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) if (rc) { QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); if (rc == 0xe080) { - PRINT_WARN("LAN on card %s if offline! " - "Waiting for STARTLAN from card.\n", - CARD_BUS_ID(card)); + dev_warn(&card->gdev->dev, + "The LAN is offline\n"); card->lan_online = 0; } return rc; @@ -1117,8 +1120,8 @@ static int qeth_l2_recover(void *ptr) if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) return 0; QETH_DBF_TEXT(TRACE, 2, "recover2"); - PRINT_WARN("Recovery of device %s started ...\n", - CARD_BUS_ID(card)); + dev_warn(&card->gdev->dev, + "A recovery process has been started for the device\n"); card->use_hard_stop = 1; __qeth_l2_set_offline(card->gdev, 1); rc = __qeth_l2_set_online(card->gdev, 1); @@ -1126,27 +1129,27 @@ static int qeth_l2_recover(void *ptr) qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); if (!rc) - PRINT_INFO("Device %s successfully recovered!\n", - CARD_BUS_ID(card)); + dev_info(&card->gdev->dev, + "Device successfully recovered!\n"); else { rtnl_lock(); dev_close(card->dev); rtnl_unlock(); - PRINT_INFO("Device %s could not be recovered!\n", - CARD_BUS_ID(card)); + dev_warn(&card->gdev->dev, "The qeth device driver " + "failed to recover an error on the device\n"); } return 0; } static int __init qeth_l2_init(void) { - PRINT_INFO("register layer 2 discipline\n"); + pr_info("register layer 2 discipline\n"); return 0; } static void __exit qeth_l2_exit(void) { - PRINT_INFO("unregister layer 2 discipline\n"); + pr_info("unregister layer 2 discipline\n"); } static void qeth_l2_shutdown(struct ccwgroup_device *gdev) diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index ed59fedd5922..dee786c5c5fe 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -8,6 +8,9 @@ * Frank Blaschka <frank.blaschka@de.ibm.com> */ +#define KMSG_COMPONENT "qeth" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/string.h> @@ -917,8 +920,8 @@ static int qeth_l3_register_addr_entry(struct qeth_card *card, if (rc) { QETH_DBF_TEXT(TRACE, 2, "FAILED"); qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); - PRINT_WARN("Could not register IP address %s (rc=0x%x/%d)\n", - buf, rc, rc); + dev_warn(&card->gdev->dev, + "Registering IP address %s failed\n", buf); } return rc; } @@ -1029,24 +1032,22 @@ static int qeth_l3_setadapter_parms(struct qeth_card *card) QETH_DBF_TEXT(SETUP, 2, "setadprm"); if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) { - PRINT_WARN("set adapter parameters not supported " - "on device %s.\n", - CARD_BUS_ID(card)); + dev_info(&card->gdev->dev, + "set adapter parameters not supported.\n"); QETH_DBF_TEXT(SETUP, 2, " notsupp"); return 0; } rc = qeth_query_setadapterparms(card); if (rc) { - PRINT_WARN("couldn't set adapter parameters on device %s: " - "x%x\n", CARD_BUS_ID(card), rc); + QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: " + "0x%x\n", card->gdev->dev.bus_id, rc); return rc; } if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { rc = qeth_setadpparms_change_macaddr(card); if (rc) - PRINT_WARN("couldn't get MAC address on " - "device %s: x%x\n", - CARD_BUS_ID(card), rc); + dev_warn(&card->gdev->dev, "Reading the adapter MAC" + " address failed\n", rc); } if ((card->info.link_type == QETH_LINK_TYPE_HSTR) || @@ -1160,16 +1161,17 @@ static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) QETH_DBF_TEXT(TRACE, 3, "ipaarp"); if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { - PRINT_WARN("ARP processing not supported " - "on %s!\n", QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "ARP processing not supported on %s!\n", + QETH_CARD_IFNAME(card)); return 0; } rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING, IPA_CMD_ASS_START, 0); if (rc) { - PRINT_WARN("Could not start ARP processing " - "assist on %s: 0x%x\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, + "Starting ARP processing support for %s failed\n", + QETH_CARD_IFNAME(card)); } return rc; } @@ -1181,19 +1183,21 @@ static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card) QETH_DBF_TEXT(TRACE, 3, "ipaipfrg"); if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) { - PRINT_INFO("Hardware IP fragmentation not supported on %s\n", - QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "Hardware IP fragmentation not supported on %s\n", + QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION, IPA_CMD_ASS_START, 0); if (rc) { - PRINT_WARN("Could not start Hardware IP fragmentation " - "assist on %s: 0x%x\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, + "Starting IP fragmentation support for %s failed\n", + QETH_CARD_IFNAME(card)); } else - PRINT_INFO("Hardware IP fragmentation enabled \n"); + dev_info(&card->gdev->dev, + "Hardware IP fragmentation enabled \n"); return rc; } @@ -1207,17 +1211,18 @@ static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) return -EOPNOTSUPP; if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { - PRINT_INFO("Inbound source address not " - "supported on %s\n", QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "Inbound source address not supported on %s\n", + QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC, IPA_CMD_ASS_START, 0); if (rc) - PRINT_WARN("Could not start inbound source " - "assist on %s: 0x%x\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, + "Starting proxy ARP support for %s failed\n", + QETH_CARD_IFNAME(card)); return rc; } @@ -1228,19 +1233,19 @@ static int qeth_l3_start_ipa_vlan(struct qeth_card *card) QETH_DBF_TEXT(TRACE, 3, "strtvlan"); if (!qeth_is_supported(card, IPA_FULL_VLAN)) { - PRINT_WARN("VLAN not supported on %s\n", - QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "VLAN not supported on %s\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO, IPA_CMD_ASS_START, 0); if (rc) { - PRINT_WARN("Could not start vlan " - "assist on %s: 0x%x\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, + "Starting VLAN support for %s failed\n", + QETH_CARD_IFNAME(card)); } else { - PRINT_INFO("VLAN enabled \n"); + dev_info(&card->gdev->dev, "VLAN enabled\n"); } return rc; } @@ -1252,19 +1257,20 @@ static int qeth_l3_start_ipa_multicast(struct qeth_card *card) QETH_DBF_TEXT(TRACE, 3, "stmcast"); if (!qeth_is_supported(card, IPA_MULTICASTING)) { - PRINT_WARN("Multicast not supported on %s\n", - QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "Multicast not supported on %s\n", + QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING, IPA_CMD_ASS_START, 0); if (rc) { - PRINT_WARN("Could not start multicast " - "assist on %s: rc=%i\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, + "Starting multicast support for %s failed\n", + QETH_CARD_IFNAME(card)); } else { - PRINT_INFO("Multicast enabled\n"); + dev_info(&card->gdev->dev, "Multicast enabled\n"); card->dev->flags |= IFF_MULTICAST; } return rc; @@ -1315,36 +1321,37 @@ static int qeth_l3_softsetup_ipv6(struct qeth_card *card) rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6); if (rc) { - PRINT_ERR("IPv6 query ipassist failed on %s\n", - QETH_CARD_IFNAME(card)); + dev_err(&card->gdev->dev, + "Activating IPv6 support for %s failed\n", + QETH_CARD_IFNAME(card)); return rc; } rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START, 3); if (rc) { - PRINT_WARN("IPv6 start assist (version 4) failed " - "on %s: 0x%x\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, + "Activating IPv6 support for %s failed\n", + QETH_CARD_IFNAME(card)); return rc; } rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6, IPA_CMD_ASS_START); if (rc) { - PRINT_WARN("IPV6 start assist (version 6) failed " - "on %s: 0x%x\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, + "Activating IPv6 support for %s failed\n", + QETH_CARD_IFNAME(card)); return rc; } rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU, IPA_CMD_ASS_START); if (rc) { - PRINT_WARN("Could not enable passthrough " - "on %s: 0x%x\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, + "Enabling the passthrough mode for %s failed\n", + QETH_CARD_IFNAME(card)); return rc; } out: - PRINT_INFO("IPV6 enabled \n"); + dev_info(&card->gdev->dev, "IPV6 enabled\n"); return 0; } #endif @@ -1356,8 +1363,8 @@ static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) QETH_DBF_TEXT(TRACE, 3, "strtipv6"); if (!qeth_is_supported(card, IPA_IPV6)) { - PRINT_WARN("IPv6 not supported on %s\n", - QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card)); return 0; } #ifdef CONFIG_QETH_IPV6 @@ -1373,34 +1380,35 @@ static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) QETH_DBF_TEXT(TRACE, 3, "stbrdcst"); card->info.broadcast_capable = 0; if (!qeth_is_supported(card, IPA_FILTERING)) { - PRINT_WARN("Broadcast not supported on %s\n", - QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "Broadcast not supported on %s\n", + QETH_CARD_IFNAME(card)); rc = -EOPNOTSUPP; goto out; } rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING, IPA_CMD_ASS_START, 0); if (rc) { - PRINT_WARN("Could not enable broadcasting filtering " - "on %s: 0x%x\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, "Enabling broadcast filtering for " + "%s failed\n", QETH_CARD_IFNAME(card)); goto out; } rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING, IPA_CMD_ASS_CONFIGURE, 1); if (rc) { - PRINT_WARN("Could not set up broadcast filtering on %s: 0x%x\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, + "Setting up broadcast filtering for %s failed\n", + QETH_CARD_IFNAME(card)); goto out; } card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; - PRINT_INFO("Broadcast enabled \n"); + dev_info(&card->gdev->dev, "Broadcast enabled\n"); rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING, IPA_CMD_ASS_ENABLE, 1); if (rc) { - PRINT_WARN("Could not set up broadcast echo filtering on " - "%s: 0x%x\n", QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, "Setting up broadcast echo " + "filtering for %s failed\n", QETH_CARD_IFNAME(card)); goto out; } card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; @@ -1419,18 +1427,18 @@ static int qeth_l3_send_checksum_command(struct qeth_card *card) rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_START, 0); if (rc) { - PRINT_WARN("Starting Inbound HW Checksumming failed on %s: " - "0x%x,\ncontinuing using Inbound SW Checksumming\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, "Starting HW checksumming for %s " + "failed, using SW checksumming\n", + QETH_CARD_IFNAME(card)); return rc; } rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_ENABLE, card->info.csum_mask); if (rc) { - PRINT_WARN("Enabling Inbound HW Checksumming failed on %s: " - "0x%x,\ncontinuing using Inbound SW Checksumming\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s " + "failed, using SW checksumming\n", + QETH_CARD_IFNAME(card)); return rc; } return 0; @@ -1443,26 +1451,30 @@ static int qeth_l3_start_ipa_checksum(struct qeth_card *card) QETH_DBF_TEXT(TRACE, 3, "strtcsum"); if (card->options.checksum_type == NO_CHECKSUMMING) { - PRINT_WARN("Using no checksumming on %s.\n", - QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "Using no checksumming on %s.\n", + QETH_CARD_IFNAME(card)); return 0; } if (card->options.checksum_type == SW_CHECKSUMMING) { - PRINT_WARN("Using SW checksumming on %s.\n", - QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "Using SW checksumming on %s.\n", + QETH_CARD_IFNAME(card)); return 0; } if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { - PRINT_WARN("Inbound HW Checksumming not " - "supported on %s,\ncontinuing " - "using Inbound SW Checksumming\n", - QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "Inbound HW Checksumming not " + "supported on %s,\ncontinuing " + "using Inbound SW Checksumming\n", + QETH_CARD_IFNAME(card)); card->options.checksum_type = SW_CHECKSUMMING; return 0; } rc = qeth_l3_send_checksum_command(card); if (!rc) - PRINT_INFO("HW Checksumming (inbound) enabled \n"); + dev_info(&card->gdev->dev, + "HW Checksumming (inbound) enabled\n"); return rc; } @@ -1474,18 +1486,20 @@ static int qeth_l3_start_ipa_tso(struct qeth_card *card) QETH_DBF_TEXT(TRACE, 3, "sttso"); if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) { - PRINT_WARN("Outbound TSO not supported on %s\n", - QETH_CARD_IFNAME(card)); + dev_info(&card->gdev->dev, + "Outbound TSO not supported on %s\n", + QETH_CARD_IFNAME(card)); rc = -EOPNOTSUPP; } else { rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO, IPA_CMD_ASS_START, 0); if (rc) - PRINT_WARN("Could not start outbound TSO " - "assist on %s: rc=%i\n", - QETH_CARD_IFNAME(card), rc); + dev_warn(&card->gdev->dev, "Starting outbound TCP " + "segmentation offload for %s failed\n", + QETH_CARD_IFNAME(card)); else - PRINT_INFO("Outbound TSO enabled\n"); + dev_info(&card->gdev->dev, + "Outbound TSO enabled\n"); } if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) { card->options.large_send = QETH_LARGE_SEND_NO; @@ -1578,12 +1592,8 @@ static int qeth_l3_get_unique_id_cb(struct qeth_card *card, else { card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | UNIQUE_ID_NOT_BY_CARD; - PRINT_WARN("couldn't get a unique id from the card on device " - "%s (result=x%x), using default id. ipv6 " - "autoconfig on other lpars may lead to duplicate " - "ip addresses. please use manually " - "configured ones.\n", - CARD_BUS_ID(card), cmd->hdr.return_code); + dev_warn(&card->gdev->dev, "The network adapter failed to " + "generate a unique ID\n"); } return 0; } @@ -3086,9 +3096,8 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) if (rc) { QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); if (rc == 0xe080) { - PRINT_WARN("LAN on card %s if offline! " - "Waiting for STARTLAN from card.\n", - CARD_BUS_ID(card)); + dev_warn(&card->gdev->dev, + "The LAN is offline\n"); card->lan_online = 0; } return rc; @@ -3194,8 +3203,8 @@ static int qeth_l3_recover(void *ptr) if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) return 0; QETH_DBF_TEXT(TRACE, 2, "recover2"); - PRINT_WARN("Recovery of device %s started ...\n", - CARD_BUS_ID(card)); + dev_warn(&card->gdev->dev, + "A recovery process has been started for the device\n"); card->use_hard_stop = 1; __qeth_l3_set_offline(card->gdev, 1); rc = __qeth_l3_set_online(card->gdev, 1); @@ -3203,14 +3212,14 @@ static int qeth_l3_recover(void *ptr) qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); if (!rc) - PRINT_INFO("Device %s successfully recovered!\n", - CARD_BUS_ID(card)); + dev_info(&card->gdev->dev, + "Device successfully recovered!\n"); else { rtnl_lock(); dev_close(card->dev); rtnl_unlock(); - PRINT_INFO("Device %s could not be recovered!\n", - CARD_BUS_ID(card)); + dev_warn(&card->gdev->dev, "The qeth device driver " + "failed to recover an error on the device\n"); } return 0; } @@ -3344,7 +3353,7 @@ static int qeth_l3_register_notifiers(void) return rc; } #else - PRINT_WARN("layer 3 discipline no IPv6 support\n"); + pr_warning("There is no IPv6 support for the layer 3 discipline\n"); #endif return 0; } @@ -3363,7 +3372,7 @@ static int __init qeth_l3_init(void) { int rc = 0; - PRINT_INFO("register layer 3 discipline\n"); + pr_info("register layer 3 discipline\n"); rc = qeth_l3_register_notifiers(); return rc; } @@ -3371,7 +3380,7 @@ static int __init qeth_l3_init(void) static void __exit qeth_l3_exit(void) { qeth_l3_unregister_notifiers(); - PRINT_INFO("unregister layer 3 discipline\n"); + pr_info("unregister layer 3 discipline\n"); } module_init(qeth_l3_init); diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 3d4e3e3f3fc0..e529b55b3ce9 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -25,9 +25,15 @@ * Sven Schuetz */ +#define KMSG_COMPONENT "zfcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/miscdevice.h> +#include <linux/seq_file.h> #include "zfcp_ext.h" +#define ZFCP_BUS_ID_SIZE 20 + static char *device; MODULE_AUTHOR("IBM Deutschland Entwicklung GmbH - linux390@de.ibm.com"); @@ -83,9 +89,9 @@ static int __init zfcp_device_setup(char *devstr) strcpy(str, devstr); token = strsep(&str, ","); - if (!token || strlen(token) >= BUS_ID_SIZE) + if (!token || strlen(token) >= ZFCP_BUS_ID_SIZE) goto err_out; - strncpy(zfcp_data.init_busid, token, BUS_ID_SIZE); + strncpy(zfcp_data.init_busid, token, ZFCP_BUS_ID_SIZE); token = strsep(&str, ","); if (!token || strict_strtoull(token, 0, @@ -102,7 +108,7 @@ static int __init zfcp_device_setup(char *devstr) err_out: kfree(str); - pr_err("zfcp: %s is not a valid SCSI device\n", devstr); + pr_err("%s is not a valid SCSI device\n", devstr); return 0; } @@ -186,13 +192,13 @@ static int __init zfcp_module_init(void) retval = misc_register(&zfcp_cfdc_misc); if (retval) { - pr_err("zfcp: Registering the misc device zfcp_cfdc failed\n"); + pr_err("Registering the misc device zfcp_cfdc failed\n"); goto out_misc; } retval = zfcp_ccw_register(); if (retval) { - pr_err("zfcp: The zfcp device driver could not register with " + pr_err("The zfcp device driver could not register with " "the common I/O layer\n"); goto out_ccw_register; } @@ -436,6 +442,16 @@ static void _zfcp_status_read_scheduler(struct work_struct *work) stat_work)); } +static void zfcp_print_sl(struct seq_file *m, struct service_level *sl) +{ + struct zfcp_adapter *adapter = + container_of(sl, struct zfcp_adapter, service_level); + + seq_printf(m, "zfcp: %s microcode level %x\n", + dev_name(&adapter->ccw_device->dev), + adapter->fsf_lic_version); +} + /** * zfcp_adapter_enqueue - enqueue a new adapter to the list * @ccw_device: pointer to the struct cc_device @@ -500,6 +516,8 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler); INIT_WORK(&adapter->scan_work, _zfcp_scan_ports_later); + adapter->service_level.seq_print = zfcp_print_sl; + /* mark adapter unusable as long as sysfs registration is not complete */ atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status); diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c index 951a8d409d1d..728147131e1d 100644 --- a/drivers/s390/scsi/zfcp_ccw.c +++ b/drivers/s390/scsi/zfcp_ccw.c @@ -6,6 +6,9 @@ * Copyright IBM Corporation 2002, 2008 */ +#define KMSG_COMPONENT "zfcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include "zfcp_ext.h" /** diff --git a/drivers/s390/scsi/zfcp_cfdc.c b/drivers/s390/scsi/zfcp_cfdc.c index ec2abceca6dc..f1a7518e67ed 100644 --- a/drivers/s390/scsi/zfcp_cfdc.c +++ b/drivers/s390/scsi/zfcp_cfdc.c @@ -7,6 +7,9 @@ * Copyright IBM Corporation 2008 */ +#define KMSG_COMPONENT "zfcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/types.h> #include <linux/miscdevice.h> #include <asm/ccwdev.h> diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index 31012d58cfb7..735d675623f8 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -6,6 +6,9 @@ * Copyright IBM Corporation 2002, 2008 */ +#define KMSG_COMPONENT "zfcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/ctype.h> #include <asm/debug.h> #include "zfcp_ext.h" diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 9ce4c75bd190..e19e46ae4a68 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -33,6 +33,7 @@ #include <asm/qdio.h> #include <asm/debug.h> #include <asm/ebcdic.h> +#include <asm/sysinfo.h> #include "zfcp_dbf.h" #include "zfcp_fsf.h" @@ -515,6 +516,7 @@ struct zfcp_adapter { struct fsf_qtcb_bottom_port *stats_reset_data; unsigned long stats_reset; struct work_struct scan_work; + struct service_level service_level; atomic_t qdio_outb_full; /* queue full incidents */ }; diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 35364f64da7f..e63eebf096b9 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -6,6 +6,9 @@ * Copyright IBM Corporation 2002, 2008 */ +#define KMSG_COMPONENT "zfcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include "zfcp_ext.h" #define ZFCP_MAX_ERPS 3 @@ -1280,8 +1283,11 @@ static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result) break; case ZFCP_ERP_ACTION_REOPEN_ADAPTER: - if (result != ZFCP_ERP_SUCCEEDED) + if (result != ZFCP_ERP_SUCCEEDED) { + unregister_service_level(&adapter->service_level); zfcp_erp_rports_del(adapter); + } else + register_service_level(&adapter->service_level); zfcp_adapter_put(adapter); break; } diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 1a7c80a77ff5..eb679f4bfb7a 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -6,6 +6,9 @@ * Copyright IBM Corporation 2008 */ +#define KMSG_COMPONENT "zfcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include "zfcp_ext.h" struct ct_iu_gpn_ft_req { diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index d024442ee128..5c83ad0c4dfa 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -6,6 +6,9 @@ * Copyright IBM Corporation 2002, 2008 */ +#define KMSG_COMPONENT "zfcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/blktrace_api.h> #include "zfcp_ext.h" diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index 664752f90b20..d3b55fb66f13 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -6,6 +6,9 @@ * Copyright IBM Corporation 2002, 2008 */ +#define KMSG_COMPONENT "zfcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include "zfcp_ext.h" /* FIXME(tune): free space should be one max. SBAL chain plus what? */ diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index e46fd3e9f68f..64636deea579 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -6,6 +6,9 @@ * Copyright IBM Corporation 2002, 2008 */ +#define KMSG_COMPONENT "zfcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include "zfcp_ext.h" #include <asm/atomic.h> diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index ca9293ba1766..899af2b45b1e 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -6,6 +6,9 @@ * Copyright IBM Corporation 2008 */ +#define KMSG_COMPONENT "zfcp" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include "zfcp_ext.h" #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \ diff --git a/drivers/s390/sysinfo.c b/drivers/s390/sysinfo.c index c3e4ab07b9cc..0eea90781385 100644 --- a/drivers/s390/sysinfo.c +++ b/drivers/s390/sysinfo.c @@ -1,17 +1,21 @@ /* * drivers/s390/sysinfo.c * - * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation - * Author(s): Ulrich Weigand (Ulrich.Weigand@de.ibm.com) + * Copyright IBM Corp. 2001, 2008 + * Author(s): Ulrich Weigand (Ulrich.Weigand@de.ibm.com) + * Martin Schwidefsky <schwidefsky@de.ibm.com> */ #include <linux/kernel.h> #include <linux/mm.h> #include <linux/proc_fs.h> +#include <linux/seq_file.h> #include <linux/init.h> #include <linux/delay.h> +#include <linux/module.h> #include <asm/ebcdic.h> #include <asm/sysinfo.h> +#include <asm/cpcmd.h> /* Sigh, math-emu. Don't ask. */ #include <asm/sfp-util.h> @@ -271,6 +275,125 @@ static __init int create_proc_sysinfo(void) __initcall(create_proc_sysinfo); +/* + * Service levels interface. + */ + +static DECLARE_RWSEM(service_level_sem); +static LIST_HEAD(service_level_list); + +int register_service_level(struct service_level *slr) +{ + struct service_level *ptr; + + down_write(&service_level_sem); + list_for_each_entry(ptr, &service_level_list, list) + if (ptr == slr) { + up_write(&service_level_sem); + return -EEXIST; + } + list_add_tail(&slr->list, &service_level_list); + up_write(&service_level_sem); + return 0; +} +EXPORT_SYMBOL(register_service_level); + +int unregister_service_level(struct service_level *slr) +{ + struct service_level *ptr, *next; + int rc = -ENOENT; + + down_write(&service_level_sem); + list_for_each_entry_safe(ptr, next, &service_level_list, list) { + if (ptr != slr) + continue; + list_del(&ptr->list); + rc = 0; + break; + } + up_write(&service_level_sem); + return rc; +} +EXPORT_SYMBOL(unregister_service_level); + +static void *service_level_start(struct seq_file *m, loff_t *pos) +{ + down_read(&service_level_sem); + return seq_list_start(&service_level_list, *pos); +} + +static void *service_level_next(struct seq_file *m, void *p, loff_t *pos) +{ + return seq_list_next(p, &service_level_list, pos); +} + +static void service_level_stop(struct seq_file *m, void *p) +{ + up_read(&service_level_sem); +} + +static int service_level_show(struct seq_file *m, void *p) +{ + struct service_level *slr; + + slr = list_entry(p, struct service_level, list); + slr->seq_print(m, slr); + return 0; +} + +static const struct seq_operations service_level_seq_ops = { + .start = service_level_start, + .next = service_level_next, + .stop = service_level_stop, + .show = service_level_show +}; + +static int service_level_open(struct inode *inode, struct file *file) +{ + return seq_open(file, &service_level_seq_ops); +} + +static const struct file_operations service_level_ops = { + .open = service_level_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release +}; + +static void service_level_vm_print(struct seq_file *m, + struct service_level *slr) +{ + char *query_buffer, *str; + + query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA); + if (!query_buffer) + return; + cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL); + str = strchr(query_buffer, '\n'); + if (str) + *str = 0; + seq_printf(m, "VM: %s\n", query_buffer); + kfree(query_buffer); +} + +static struct service_level service_level_vm = { + .seq_print = service_level_vm_print +}; + +static __init int create_proc_service_level(void) +{ + proc_create("service_levels", 0, NULL, &service_level_ops); + if (MACHINE_IS_VM) + register_service_level(&service_level_vm); + return 0; +} + +subsys_initcall(create_proc_service_level); + +/* + * Bogomips calculation based on cpu capability. + */ + int get_cpu_capability(unsigned int *capability) { struct sysinfo_1_2_2 *info; diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 8fcfa398d350..95a76ff9e01b 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -949,7 +949,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) set_binfmt(&elf_format); #ifdef ARCH_HAS_SETUP_ADDITIONAL_PAGES - retval = arch_setup_additional_pages(bprm, executable_stack); + retval = arch_setup_additional_pages(bprm, !!elf_interpreter); if (retval < 0) { send_sig(SIGKILL, current, 0); goto out; diff --git a/include/asm-generic/memory_model.h b/include/asm-generic/memory_model.h index 18546d8eb78e..36fa286adad5 100644 --- a/include/asm-generic/memory_model.h +++ b/include/asm-generic/memory_model.h @@ -49,7 +49,7 @@ /* memmap is virtually contigious. */ #define __pfn_to_page(pfn) (vmemmap + (pfn)) -#define __page_to_pfn(page) ((page) - vmemmap) +#define __page_to_pfn(page) (unsigned long)((page) - vmemmap) #elif defined(CONFIG_SPARSEMEM) /* diff --git a/include/net/iucv/iucv.h b/include/net/iucv/iucv.h index fd70adbb3566..5e310c8d8e2f 100644 --- a/include/net/iucv/iucv.h +++ b/include/net/iucv/iucv.h @@ -337,12 +337,35 @@ int iucv_message_purge(struct iucv_path *path, struct iucv_message *msg, * established paths. This function will deal with RMDATA messages * embedded in struct iucv_message as well. * + * Locking: local_bh_enable/local_bh_disable + * * Returns the result from the CP IUCV call. */ int iucv_message_receive(struct iucv_path *path, struct iucv_message *msg, u8 flags, void *buffer, size_t size, size_t *residual); /** + * __iucv_message_receive + * @path: address of iucv path structure + * @msg: address of iucv msg structure + * @flags: flags that affect how the message is received (IUCV_IPBUFLST) + * @buffer: address of data buffer or address of struct iucv_array + * @size: length of data buffer + * @residual: + * + * This function receives messages that are being sent to you over + * established paths. This function will deal with RMDATA messages + * embedded in struct iucv_message as well. + * + * Locking: no locking. + * + * Returns the result from the CP IUCV call. + */ +int __iucv_message_receive(struct iucv_path *path, struct iucv_message *msg, + u8 flags, void *buffer, size_t size, + size_t *residual); + +/** * iucv_message_reject * @path: address of iucv path structure * @msg: address of iucv msg structure @@ -386,12 +409,34 @@ int iucv_message_reply(struct iucv_path *path, struct iucv_message *msg, * transmitted is in a buffer and this is a one-way message and the * receiver will not reply to the message. * + * Locking: local_bh_enable/local_bh_disable + * * Returns the result from the CP IUCV call. */ int iucv_message_send(struct iucv_path *path, struct iucv_message *msg, u8 flags, u32 srccls, void *buffer, size_t size); /** + * __iucv_message_send + * @path: address of iucv path structure + * @msg: address of iucv msg structure + * @flags: how the message is sent (IUCV_IPRMDATA, IUCV_IPPRTY, IUCV_IPBUFLST) + * @srccls: source class of message + * @buffer: address of data buffer or address of struct iucv_array + * @size: length of send buffer + * + * This function transmits data to another application. Data to be + * transmitted is in a buffer and this is a one-way message and the + * receiver will not reply to the message. + * + * Locking: no locking. + * + * Returns the result from the CP IUCV call. + */ +int __iucv_message_send(struct iucv_path *path, struct iucv_message *msg, + u8 flags, u32 srccls, void *buffer, size_t size); + +/** * iucv_message_send2way * @path: address of iucv path structure * @msg: address of iucv msg structure diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index 29f7baa25110..af3192d2a5a3 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -8,6 +8,9 @@ * Author(s): Jennifer Hunt <jenhunt@us.ibm.com> */ +#define KMSG_COMPONENT "af_iucv" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/types.h> #include <linux/list.h> @@ -616,6 +619,8 @@ static int iucv_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct iucv_sock *iucv = iucv_sk(sk); struct sk_buff *skb; struct iucv_message txmsg; + char user_id[9]; + char appl_id[9]; int err; err = sock_error(sk); @@ -651,8 +656,15 @@ static int iucv_sock_sendmsg(struct kiocb *iocb, struct socket *sock, err = iucv_message_send(iucv->path, &txmsg, 0, 0, (void *) skb->data, skb->len); if (err) { - if (err == 3) - printk(KERN_ERR "AF_IUCV msg limit exceeded\n"); + if (err == 3) { + user_id[8] = 0; + memcpy(user_id, iucv->dst_user_id, 8); + appl_id[8] = 0; + memcpy(appl_id, iucv->dst_name, 8); + pr_err("Application %s on z/VM guest %s" + " exceeds message limit\n", + user_id, appl_id); + } skb_unlink(skb, &iucv->send_skb_q); err = -EPIPE; goto fail; @@ -1190,7 +1202,8 @@ static int __init afiucv_init(void) int err; if (!MACHINE_IS_VM) { - printk(KERN_ERR "AF_IUCV connection needs VM as base\n"); + pr_err("The af_iucv module cannot be loaded" + " without z/VM\n"); err = -EPROTONOSUPPORT; goto out; } diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c index d7b54b5bfa69..8f57d4f4328a 100644 --- a/net/iucv/iucv.c +++ b/net/iucv/iucv.c @@ -30,6 +30,9 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#define KMSG_COMPONENT "iucv" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/spinlock.h> @@ -424,8 +427,8 @@ static void iucv_declare_cpu(void *data) err = "Paging or storage error"; break; } - printk(KERN_WARNING "iucv_register: iucv_declare_buffer " - "on cpu %i returned error 0x%02x (%s)\n", cpu, rc, err); + pr_warning("Defining an interrupt buffer on CPU %i" + " failed with 0x%02x (%s)\n", cpu, rc, err); return; } @@ -957,7 +960,52 @@ int iucv_message_purge(struct iucv_path *path, struct iucv_message *msg, EXPORT_SYMBOL(iucv_message_purge); /** - * iucv_message_receive + * iucv_message_receive_iprmdata + * @path: address of iucv path structure + * @msg: address of iucv msg structure + * @flags: how the message is received (IUCV_IPBUFLST) + * @buffer: address of data buffer or address of struct iucv_array + * @size: length of data buffer + * @residual: + * + * Internal function used by iucv_message_receive and __iucv_message_receive + * to receive RMDATA data stored in struct iucv_message. + */ +static int iucv_message_receive_iprmdata(struct iucv_path *path, + struct iucv_message *msg, + u8 flags, void *buffer, + size_t size, size_t *residual) +{ + struct iucv_array *array; + u8 *rmmsg; + size_t copy; + + /* + * Message is 8 bytes long and has been stored to the + * message descriptor itself. + */ + if (residual) + *residual = abs(size - 8); + rmmsg = msg->rmmsg; + if (flags & IUCV_IPBUFLST) { + /* Copy to struct iucv_array. */ + size = (size < 8) ? size : 8; + for (array = buffer; size > 0; array++) { + copy = min_t(size_t, size, array->length); + memcpy((u8 *)(addr_t) array->address, + rmmsg, copy); + rmmsg += copy; + size -= copy; + } + } else { + /* Copy to direct buffer. */ + memcpy(buffer, rmmsg, min_t(size_t, size, 8)); + } + return 0; +} + +/** + * __iucv_message_receive * @path: address of iucv path structure * @msg: address of iucv msg structure * @flags: how the message is received (IUCV_IPBUFLST) @@ -969,44 +1017,19 @@ EXPORT_SYMBOL(iucv_message_purge); * established paths. This function will deal with RMDATA messages * embedded in struct iucv_message as well. * + * Locking: no locking + * * Returns the result from the CP IUCV call. */ -int iucv_message_receive(struct iucv_path *path, struct iucv_message *msg, - u8 flags, void *buffer, size_t size, size_t *residual) +int __iucv_message_receive(struct iucv_path *path, struct iucv_message *msg, + u8 flags, void *buffer, size_t size, size_t *residual) { union iucv_param *parm; - struct iucv_array *array; - u8 *rmmsg; - size_t copy; int rc; - if (msg->flags & IUCV_IPRMDATA) { - /* - * Message is 8 bytes long and has been stored to the - * message descriptor itself. - */ - rc = (size < 8) ? 5 : 0; - if (residual) - *residual = abs(size - 8); - rmmsg = msg->rmmsg; - if (flags & IUCV_IPBUFLST) { - /* Copy to struct iucv_array. */ - size = (size < 8) ? size : 8; - for (array = buffer; size > 0; array++) { - copy = min_t(size_t, size, array->length); - memcpy((u8 *)(addr_t) array->address, - rmmsg, copy); - rmmsg += copy; - size -= copy; - } - } else { - /* Copy to direct buffer. */ - memcpy(buffer, rmmsg, min_t(size_t, size, 8)); - } - return 0; - } - - local_bh_disable(); + if (msg->flags & IUCV_IPRMDATA) + return iucv_message_receive_iprmdata(path, msg, flags, + buffer, size, residual); parm = iucv_param[smp_processor_id()]; memset(parm, 0, sizeof(union iucv_param)); parm->db.ipbfadr1 = (u32)(addr_t) buffer; @@ -1022,6 +1045,37 @@ int iucv_message_receive(struct iucv_path *path, struct iucv_message *msg, if (residual) *residual = parm->db.ipbfln1f; } + return rc; +} +EXPORT_SYMBOL(__iucv_message_receive); + +/** + * iucv_message_receive + * @path: address of iucv path structure + * @msg: address of iucv msg structure + * @flags: how the message is received (IUCV_IPBUFLST) + * @buffer: address of data buffer or address of struct iucv_array + * @size: length of data buffer + * @residual: + * + * This function receives messages that are being sent to you over + * established paths. This function will deal with RMDATA messages + * embedded in struct iucv_message as well. + * + * Locking: local_bh_enable/local_bh_disable + * + * Returns the result from the CP IUCV call. + */ +int iucv_message_receive(struct iucv_path *path, struct iucv_message *msg, + u8 flags, void *buffer, size_t size, size_t *residual) +{ + int rc; + + if (msg->flags & IUCV_IPRMDATA) + return iucv_message_receive_iprmdata(path, msg, flags, + buffer, size, residual); + local_bh_disable(); + rc = __iucv_message_receive(path, msg, flags, buffer, size, residual); local_bh_enable(); return rc; } @@ -1101,7 +1155,7 @@ int iucv_message_reply(struct iucv_path *path, struct iucv_message *msg, EXPORT_SYMBOL(iucv_message_reply); /** - * iucv_message_send + * __iucv_message_send * @path: address of iucv path structure * @msg: address of iucv msg structure * @flags: how the message is sent (IUCV_IPRMDATA, IUCV_IPPRTY, IUCV_IPBUFLST) @@ -1113,15 +1167,16 @@ EXPORT_SYMBOL(iucv_message_reply); * transmitted is in a buffer and this is a one-way message and the * receiver will not reply to the message. * + * Locking: no locking + * * Returns the result from the CP IUCV call. */ -int iucv_message_send(struct iucv_path *path, struct iucv_message *msg, +int __iucv_message_send(struct iucv_path *path, struct iucv_message *msg, u8 flags, u32 srccls, void *buffer, size_t size) { union iucv_param *parm; int rc; - local_bh_disable(); parm = iucv_param[smp_processor_id()]; memset(parm, 0, sizeof(union iucv_param)); if (flags & IUCV_IPRMDATA) { @@ -1144,6 +1199,34 @@ int iucv_message_send(struct iucv_path *path, struct iucv_message *msg, rc = iucv_call_b2f0(IUCV_SEND, parm); if (!rc) msg->id = parm->db.ipmsgid; + return rc; +} +EXPORT_SYMBOL(__iucv_message_send); + +/** + * iucv_message_send + * @path: address of iucv path structure + * @msg: address of iucv msg structure + * @flags: how the message is sent (IUCV_IPRMDATA, IUCV_IPPRTY, IUCV_IPBUFLST) + * @srccls: source class of message + * @buffer: address of send buffer or address of struct iucv_array + * @size: length of send buffer + * + * This function transmits data to another application. Data to be + * transmitted is in a buffer and this is a one-way message and the + * receiver will not reply to the message. + * + * Locking: local_bh_enable/local_bh_disable + * + * Returns the result from the CP IUCV call. + */ +int iucv_message_send(struct iucv_path *path, struct iucv_message *msg, + u8 flags, u32 srccls, void *buffer, size_t size) +{ + int rc; + + local_bh_disable(); + rc = __iucv_message_send(path, msg, flags, srccls, buffer, size); local_bh_enable(); return rc; } @@ -1572,7 +1655,7 @@ static void iucv_external_interrupt(u16 code) BUG_ON(p->iptype < 0x01 || p->iptype > 0x09); work = kmalloc(sizeof(struct iucv_irq_list), GFP_ATOMIC); if (!work) { - printk(KERN_WARNING "iucv_external_interrupt: out of memory\n"); + pr_warning("iucv_external_interrupt: out of memory\n"); return; } memcpy(&work->data, p, sizeof(work->data)); |