diff options
author | Stephen Rothwell <sfr@canb.auug.org.au> | 2010-03-11 13:26:09 +1100 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2010-03-11 13:26:09 +1100 |
commit | 6aa08217877200fdfd6327796e2656f1a083668f (patch) | |
tree | bd8aaad641b15c33d682f2fda096cd5a45e6776c /include | |
parent | a20710db07fba51c7abbdbcc8a8b7b4982531fb1 (diff) | |
parent | 0d7a7c6797de8bb88b1c7dcc6d5abb63e7d31f2e (diff) |
Merge remote branch 'kgdb/kgdb-next'
Diffstat (limited to 'include')
-rw-r--r-- | include/asm-generic/kmap_types.h | 3 | ||||
-rw-r--r-- | include/drm/drm_crtc_helper.h | 2 | ||||
-rw-r--r-- | include/drm/drm_fb_helper.h | 4 | ||||
-rw-r--r-- | include/linux/kbd_kern.h | 1 | ||||
-rw-r--r-- | include/linux/kdb.h | 117 | ||||
-rw-r--r-- | include/linux/kgdb.h | 83 | ||||
-rw-r--r-- | include/linux/serial_core.h | 1 |
7 files changed, 195 insertions, 16 deletions
diff --git a/include/asm-generic/kmap_types.h b/include/asm-generic/kmap_types.h index e5f234a08540..97e807c8c812 100644 --- a/include/asm-generic/kmap_types.h +++ b/include/asm-generic/kmap_types.h @@ -28,7 +28,8 @@ KMAP_D(15) KM_UML_USERCOPY, KMAP_D(16) KM_IRQ_PTE, KMAP_D(17) KM_NMI, KMAP_D(18) KM_NMI_PTE, -KMAP_D(19) KM_TYPE_NR +KMAP_D(19) KM_KDB, +KMAP_D(20) KM_TYPE_NR }; #undef KMAP_D diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h index b29e20168b5f..4c1231921ba2 100644 --- a/include/drm/drm_crtc_helper.h +++ b/include/drm/drm_crtc_helper.h @@ -61,6 +61,8 @@ struct drm_crtc_helper_funcs { /* Move the crtc on the current fb to the given position *optional* */ int (*mode_set_base)(struct drm_crtc *crtc, int x, int y, struct drm_framebuffer *old_fb); + int (*mode_set_base_atomic)(struct drm_crtc *crtc, + struct drm_framebuffer *fb, int x, int y); /* reload the current crtc LUT */ void (*load_lut)(struct drm_crtc *crtc); diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index 58c892a2cbfa..1f2ab9418d17 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -30,6 +30,8 @@ #ifndef DRM_FB_HELPER_H #define DRM_FB_HELPER_H +#include <linux/kgdb.h> + struct drm_fb_helper_crtc { uint32_t crtc_id; struct drm_mode_set mode_set; @@ -63,8 +65,10 @@ struct drm_fb_helper_connector { struct drm_fb_helper { struct drm_framebuffer *fb; + struct drm_framebuffer *saved_fb; struct drm_device *dev; struct drm_display_mode *mode; + struct dbg_kms_ops kdb_ops; int crtc_count; struct drm_fb_helper_crtc *crtc_info; struct drm_fb_helper_funcs *funcs; diff --git a/include/linux/kbd_kern.h b/include/linux/kbd_kern.h index 506ad20c18f8..ae87c0ad4ce9 100644 --- a/include/linux/kbd_kern.h +++ b/include/linux/kbd_kern.h @@ -144,6 +144,7 @@ struct console; int getkeycode(unsigned int scancode); int setkeycode(unsigned int scancode, unsigned int keycode); void compute_shiftstate(void); +void kbd_dbg_clear_keys(void); /* defkeymap.c */ diff --git a/include/linux/kdb.h b/include/linux/kdb.h new file mode 100644 index 000000000000..ccb2b3ec0fe8 --- /dev/null +++ b/include/linux/kdb.h @@ -0,0 +1,117 @@ +#ifndef _KDB_H +#define _KDB_H + +/* + * Kernel Debugger Architecture Independent Global Headers + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (c) 2000-2007 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (C) 2000 Stephane Eranian <eranian@hpl.hp.com> + * Copyright (C) 2009 Jason Wessel <jason.wessel@windriver.com> + */ + +#ifdef CONFIG_KGDB_KDB +#include <linux/init.h> +#include <linux/sched.h> +#include <asm/atomic.h> + +#define KDB_POLL_FUNC_MAX 5 +extern int kdb_poll_idx; + +/* + * kdb_initial_cpu is initialized to -1, and is set to the cpu + * number whenever the kernel debugger is entered. + */ +extern int kdb_initial_cpu; +extern atomic_t kdb_event; + +/* + * kdb_diemsg + * + * Contains a pointer to the last string supplied to the + * kernel 'die' panic function. + */ +extern const char *kdb_diemsg; + +#define KDB_FLAG_EARLYKDB (1 << 0) /* set from boot parameter kdb=early */ +#define KDB_FLAG_CATASTROPHIC (1 << 1) /* A catastrophic event has occurred */ +#define KDB_FLAG_CMD_INTERRUPT (1 << 2) /* Previous command was interrupted */ +#define KDB_FLAG_NOIPI (1 << 3) /* Do not send IPIs */ +#define KDB_FLAG_ONLY_DO_DUMP (1 << 4) /* Only do a dump, used when + * kdb is off */ +#define KDB_FLAG_NO_CONSOLE (1 << 5) /* No console is available, + * kdb is disabled */ +#define KDB_FLAG_NO_VT_CONSOLE (1 << 6) /* No VT console is available, do + * not use keyboard */ +#define KDB_FLAG_NO_I8042 (1 << 7) /* No i8042 chip is available, do + * not use keyboard */ + +extern int kdb_flags; /* Global flags, see kdb_state for per cpu state */ + +extern void kdb_save_flags(void); +extern void kdb_restore_flags(void); + +#define KDB_FLAG(flag) (kdb_flags & KDB_FLAG_##flag) +#define KDB_FLAG_SET(flag) ((void)(kdb_flags |= KDB_FLAG_##flag)) +#define KDB_FLAG_CLEAR(flag) ((void)(kdb_flags &= ~KDB_FLAG_##flag)) + +/* + * External entry point for the kernel debugger. The pt_regs + * at the time of entry are supplied along with the reason for + * entry to the kernel debugger. + */ + +typedef enum { + KDB_REASON_ENTER = 1, /* KDB_ENTER() trap/fault - regs valid */ + KDB_REASON_ENTER_SLAVE, /* KDB_ENTER_SLAVE() trap/fault - regs valid */ + KDB_REASON_BREAK, /* Breakpoint inst. - regs valid */ + KDB_REASON_DEBUG, /* Debug Fault - regs valid */ + KDB_REASON_OOPS, /* Kernel Oops - regs valid */ + KDB_REASON_SWITCH, /* CPU switch - regs valid*/ + KDB_REASON_KEYBOARD, /* Keyboard entry - regs valid */ + KDB_REASON_NMI, /* Non-maskable interrupt; regs valid */ + KDB_REASON_RECURSE, /* Recursive entry to kdb; + * regs probably valid */ + KDB_REASON_SSTEP, /* Single Step trap. - regs valid */ +} kdb_reason_t; + +extern int kdb_trap_printk; +extern int vkdb_printf(const char *fmt, va_list args) + __attribute__ ((format (printf, 1, 0))); +extern int kdb_printf(const char *, ...) + __attribute__ ((format (printf, 1, 2))); +typedef int (*kdb_printf_t)(const char *, ...) + __attribute__ ((format (printf, 1, 2))); + +extern void kdb_init(int level); + +/* Access to kdb specific polling devices */ +typedef int (*get_char_func)(void); +extern get_char_func kdb_poll_funcs[]; +extern int kdb_get_kbd_char(void); + +static inline +int kdb_process_cpu(const struct task_struct *p) +{ + unsigned int cpu = task_thread_info(p)->cpu; + if (cpu > num_possible_cpus()) + cpu = 0; + return cpu; +} + +/* kdb access to register set for stack dumping */ +extern struct pt_regs *kdb_current_regs; + +#else /* ! CONFIG_KGDB_KDB */ +#define kdb_printf(...) +#define kdb_init(x) +#endif /* CONFIG_KGDB_KDB */ +enum { + KDB_NOT_INITIALIZED, + KDB_INIT_EARLY, + KDB_INIT_FULL, +}; +#endif /* !_KDB_H */ diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h index 19ec41a183f5..a8253b53e23f 100644 --- a/include/linux/kgdb.h +++ b/include/linux/kgdb.h @@ -16,10 +16,12 @@ #include <linux/serial_8250.h> #include <linux/linkage.h> #include <linux/init.h> - #include <asm/atomic.h> +#ifdef CONFIG_HAVE_ARCH_KGDB #include <asm/kgdb.h> +#endif +#ifdef CONFIG_KGDB struct pt_regs; /** @@ -34,20 +36,6 @@ struct pt_regs; extern int kgdb_skipexception(int exception, struct pt_regs *regs); /** - * kgdb_post_primary_code - (optional) Save error vector/code numbers. - * @regs: Original pt_regs. - * @e_vector: Original error vector. - * @err_code: Original error code. - * - * This is usually needed on architectures which support SMP and - * KGDB. This function is called after all the secondary cpus have - * been put to a know spin state and the primary CPU has control over - * KGDB. - */ -extern void kgdb_post_primary_code(struct pt_regs *regs, int e_vector, - int err_code); - -/** * kgdb_disable_hw_debug - (optional) Disable hardware debugging hook * @regs: Current &struct pt_regs. * @@ -72,6 +60,7 @@ struct uart_port; void kgdb_breakpoint(void); extern int kgdb_connected; +extern int kgdb_io_module_registered; extern atomic_t kgdb_setting_breakpoint; extern atomic_t kgdb_cpu_doing_single_step; @@ -202,12 +191,34 @@ kgdb_arch_handle_exception(int vector, int signo, int err_code, */ extern void kgdb_roundup_cpus(unsigned long flags); +/** + * kgdb_arch_set_pc - Generic call back to the program counter + * @regs: Current &struct pt_regs. + * @pc: The new value for the program counter + * + * This function handles updating the program counter and requires an + * architecture specific implementation. + */ +extern void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc); + + /* Optional functions. */ extern int kgdb_validate_break_address(unsigned long addr); extern int kgdb_arch_set_breakpoint(unsigned long addr, char *saved_instr); extern int kgdb_arch_remove_breakpoint(unsigned long addr, char *bundle); /** + * kgdb_arch_late - Perform any architecture specific initalization. + * + * This function will handle the late initalization of any + * architecture specific callbacks. This is an optional function for + * handling things like late initialization of hw breakpoints. The + * default implementation does nothing. + */ +extern void kgdb_arch_late(void); + + +/** * struct kgdb_arch - Describe architecture specific values. * @gdb_bpt_instr: The instruction to trigger a breakpoint. * @flags: Flags for the breakpoint, currently just %KGDB_HW_BREAKPOINT. @@ -247,6 +258,8 @@ struct kgdb_arch { * the I/O driver. * @post_exception: Pointer to a function that will do any cleanup work * for the I/O driver. + * @is_console: 1 if the end device is a console 0 if the I/O device is + * not a console */ struct kgdb_io { const char *name; @@ -256,6 +269,7 @@ struct kgdb_io { int (*init) (void); void (*pre_exception) (void); void (*post_exception) (void); + int is_console; }; extern struct kgdb_arch arch_kgdb_ops; @@ -264,12 +278,14 @@ extern unsigned long __weak kgdb_arch_pc(int exception, struct pt_regs *regs); extern int kgdb_register_io_module(struct kgdb_io *local_kgdb_io_ops); extern void kgdb_unregister_io_module(struct kgdb_io *local_kgdb_io_ops); +extern struct kgdb_io *dbg_io_ops; extern int kgdb_hex2long(char **ptr, unsigned long *long_val); extern int kgdb_mem2hex(char *mem, char *buf, int count); extern int kgdb_hex2mem(char *buf, char *mem, int count); extern int kgdb_isremovedbreak(unsigned long addr); +extern void kgdb_schedule_breakpoint(void); extern int kgdb_handle_exception(int ex_vector, int signo, int err_code, @@ -278,5 +294,42 @@ extern int kgdb_nmicallback(int cpu, void *regs); extern int kgdb_single_step; extern atomic_t kgdb_active; +#endif /* CONFIG_KGDB */ + +/* Common to all that include kgdb.h */ +#ifdef CONFIG_VT +extern void dbg_pre_vt_hook(void); +extern void dbg_post_vt_hook(void); +#else /* ! CONFIG_VT */ +#define dbg_pre_vt_hook() +#define dbg_post_vt_hook() +#endif /* CONFIG_VT */ + +struct dbg_kms_ops { + int (*activate_console) (struct dbg_kms_ops *ops); + int (*restore_console) (struct dbg_kms_ops *ops); +}; +#ifdef CONFIG_KGDB +#define in_dbg_master() \ + (raw_smp_processor_id() == atomic_read(&kgdb_active)) +extern bool dbg_is_early; +extern void __init dbg_late_init(void); + +extern struct dbg_kms_ops *dbg_kms_ops; +extern int dbg_kms_ops_register(struct dbg_kms_ops *ops); +extern int dbg_kms_ops_unregister(struct dbg_kms_ops *ops); +#else /* ! CONFIG_KGDB */ +#define in_dbg_master() (0) +#define dbg_late_init() + +static inline int dbg_kms_ops_register(struct dbg_kms_ops *ops) +{ + return 0; +} +static inline int dbg_kms_ops_unregister(struct dbg_kms_ops *ops) +{ + return 0; +} +#endif /* ! CONFIG_KGDB */ #endif /* _KGDB_H_ */ diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 8c3dd36fe91a..d40db835cb05 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -246,6 +246,7 @@ struct uart_ops { #endif }; +#define NO_POLL_CHAR 0x00ff0000 #define UART_CONFIG_TYPE (1 << 0) #define UART_CONFIG_IRQ (1 << 1) |