diff options
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/acpi.h | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/e820.h | 73 | ||||
| -rw-r--r-- | arch/x86/include/asm/e820/api.h | 50 | ||||
| -rw-r--r-- | arch/x86/include/asm/e820/types.h | 104 | ||||
| -rw-r--r-- | arch/x86/include/asm/gart.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/mpspec.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/pci_x86.h | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/pgtable.h | 3 | ||||
| -rw-r--r-- | arch/x86/include/asm/xen/page.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/uapi/asm/bootparam.h | 18 |
10 files changed, 180 insertions, 81 deletions
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h index 395b69551fce..2efc768e4362 100644 --- a/arch/x86/include/asm/acpi.h +++ b/arch/x86/include/asm/acpi.h @@ -52,6 +52,8 @@ extern u8 acpi_sci_flags; extern int acpi_sci_override_gsi; void acpi_pic_sci_set_trigger(unsigned int, u16); +struct device; + extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi, int trigger, int polarity); extern void (*__acpi_unregister_gsi)(u32 gsi); diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h deleted file mode 100644 index 67313f3a9874..000000000000 --- a/arch/x86/include/asm/e820.h +++ /dev/null @@ -1,73 +0,0 @@ -#ifndef _ASM_X86_E820_H -#define _ASM_X86_E820_H - -/* - * E820_X_MAX is the maximum size of the extended E820 table. The extended - * table may contain up to 3 extra E820 entries per possible NUMA node, so we - * make room for 3 * MAX_NUMNODES possible entries, beyond the standard 128. - * Also note that E820_X_MAX *must* be defined before we include uapi/asm/e820.h. - */ -#include <linux/numa.h> -#define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES) - -#include <uapi/asm/e820.h> - -#ifndef __ASSEMBLY__ -/* see comment in arch/x86/kernel/e820.c */ -extern struct e820map *e820; -extern struct e820map *e820_saved; - -extern unsigned long pci_mem_start; -extern int e820_any_mapped(u64 start, u64 end, unsigned type); -extern int e820_all_mapped(u64 start, u64 end, unsigned type); -extern void e820_add_region(u64 start, u64 size, int type); -extern void e820_print_map(char *who); -extern int -sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, u32 *pnr_map); -extern u64 e820_update_range(u64 start, u64 size, unsigned old_type, - unsigned new_type); -extern u64 e820_remove_range(u64 start, u64 size, unsigned old_type, - int checktype); -extern void update_e820(void); -extern void e820_setup_gap(void); -struct setup_data; -extern void parse_e820_ext(u64 phys_addr, u32 data_len); - -#if defined(CONFIG_X86_64) || \ - (defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION)) -extern void e820_mark_nosave_regions(unsigned long limit_pfn); -#else -static inline void e820_mark_nosave_regions(unsigned long limit_pfn) -{ -} -#endif - -extern unsigned long e820_end_of_ram_pfn(void); -extern unsigned long e820_end_of_low_ram_pfn(void); -extern u64 early_reserve_e820(u64 sizet, u64 align); - -void memblock_x86_fill(void); -void memblock_find_dma_reserve(void); - -extern void finish_e820_parsing(void); -extern void e820_reserve_resources(void); -extern void e820_reserve_resources_late(void); -extern void setup_memory_map(void); -extern char *default_machine_specific_memory_setup(void); - -extern void e820_reallocate_tables(void); - -/* - * Returns true iff the specified range [s,e) is completely contained inside - * the ISA region. - */ -static inline bool is_ISA_range(u64 s, u64 e) -{ - return s >= ISA_START_ADDRESS && e <= ISA_END_ADDRESS; -} - -#endif /* __ASSEMBLY__ */ -#include <linux/ioport.h> - -#define HIGH_MEMORY (1024*1024) -#endif /* _ASM_X86_E820_H */ diff --git a/arch/x86/include/asm/e820/api.h b/arch/x86/include/asm/e820/api.h new file mode 100644 index 000000000000..8e0f8b85b209 --- /dev/null +++ b/arch/x86/include/asm/e820/api.h @@ -0,0 +1,50 @@ +#ifndef _ASM_E820_API_H +#define _ASM_E820_API_H + +#include <asm/e820/types.h> + +extern struct e820_table *e820_table; +extern struct e820_table *e820_table_firmware; + +extern unsigned long pci_mem_start; + +extern bool e820__mapped_any(u64 start, u64 end, enum e820_type type); +extern bool e820__mapped_all(u64 start, u64 end, enum e820_type type); + +extern void e820__range_add (u64 start, u64 size, enum e820_type type); +extern u64 e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type); +extern u64 e820__range_remove(u64 start, u64 size, enum e820_type old_type, bool check_type); + +extern void e820__print_table(char *who); +extern int e820__update_table(struct e820_table *table); +extern void e820__update_table_print(void); + +extern unsigned long e820__end_of_ram_pfn(void); +extern unsigned long e820__end_of_low_ram_pfn(void); + +extern u64 e820__memblock_alloc_reserved(u64 size, u64 align); +extern void e820__memblock_setup(void); + +extern void e820__reserve_setup_data(void); +extern void e820__finish_early_params(void); +extern void e820__reserve_resources(void); +extern void e820__reserve_resources_late(void); + +extern void e820__memory_setup(void); +extern void e820__memory_setup_extended(u64 phys_addr, u32 data_len); +extern char *e820__memory_setup_default(void); +extern void e820__setup_pci_gap(void); + +extern void e820__reallocate_tables(void); +extern void e820__register_nosave_regions(unsigned long limit_pfn); + +/* + * Returns true iff the specified range [start,end) is completely contained inside + * the ISA region. + */ +static inline bool is_ISA_range(u64 start, u64 end) +{ + return start >= ISA_START_ADDRESS && end <= ISA_END_ADDRESS; +} + +#endif /* _ASM_E820_API_H */ diff --git a/arch/x86/include/asm/e820/types.h b/arch/x86/include/asm/e820/types.h new file mode 100644 index 000000000000..4adeed03a9a1 --- /dev/null +++ b/arch/x86/include/asm/e820/types.h @@ -0,0 +1,104 @@ +#ifndef _ASM_E820_TYPES_H +#define _ASM_E820_TYPES_H + +#include <uapi/asm/bootparam.h> + +/* + * These are the E820 types known to the kernel: + */ +enum e820_type { + E820_TYPE_RAM = 1, + E820_TYPE_RESERVED = 2, + E820_TYPE_ACPI = 3, + E820_TYPE_NVS = 4, + E820_TYPE_UNUSABLE = 5, + E820_TYPE_PMEM = 7, + + /* + * This is a non-standardized way to represent ADR or + * NVDIMM regions that persist over a reboot. + * + * The kernel will ignore their special capabilities + * unless the CONFIG_X86_PMEM_LEGACY=y option is set. + * + * ( Note that older platforms also used 6 for the same + * type of memory, but newer versions switched to 12 as + * 6 was assigned differently. Some time they will learn... ) + */ + E820_TYPE_PRAM = 12, + + /* + * Reserved RAM used by the kernel itself if + * CONFIG_INTEL_TXT=y is enabled, memory of this type + * will be included in the S3 integrity calculation + * and so should not include any memory that the BIOS + * might alter over the S3 transition: + */ + E820_TYPE_RESERVED_KERN = 128, +}; + +/* + * A single E820 map entry, describing a memory range of [addr...addr+size-1], + * of 'type' memory type: + * + * (We pack it because there can be thousands of them on large systems.) + */ +struct e820_entry { + u64 addr; + u64 size; + enum e820_type type; +} __attribute__((packed)); + +/* + * The legacy E820 BIOS limits us to 128 (E820_MAX_ENTRIES_ZEROPAGE) nodes + * due to the constrained space in the zeropage. + * + * On large systems we can easily have thousands of nodes with RAM, + * which cannot be fit into so few entries - so we have a mechanism + * to extend the e820 table size at build-time, via the E820_MAX_ENTRIES + * define below. + * + * ( Those extra entries are enumerated via the EFI memory map, not + * via the legacy zeropage mechanism. ) + * + * Size our internal memory map tables to have room for these additional + * entries, based on a heuristic calculation: up to three entries per + * NUMA node, plus E820_MAX_ENTRIES_ZEROPAGE for some extra space. + * + * This allows for bootstrap/firmware quirks such as possible duplicate + * E820 entries that might need room in the same arrays, prior to the + * call to e820__update_table() to remove duplicates. The allowance + * of three memory map entries per node is "enough" entries for + * the initial hardware platform motivating this mechanism to make + * use of additional EFI map entries. Future platforms may want + * to allow more than three entries per node or otherwise refine + * this size. + */ + +#include <linux/numa.h> + +#define E820_MAX_ENTRIES (E820_MAX_ENTRIES_ZEROPAGE + 3*MAX_NUMNODES) + +/* + * The whole array of E820 entries: + */ +struct e820_table { + __u32 nr_entries; + struct e820_entry entries[E820_MAX_ENTRIES]; +}; + +/* + * Various well-known legacy memory ranges in physical memory: + */ +#define ISA_START_ADDRESS 0x000a0000 +#define ISA_END_ADDRESS 0x00100000 + +#define BIOS_BEGIN 0x000a0000 +#define BIOS_END 0x00100000 + +#define HIGH_MEMORY 0x00100000 + +#define BIOS_ROM_BASE 0xffe00000 +#define BIOS_ROM_END 0xffffffff + +#endif /* _ASM_E820_TYPES_H */ diff --git a/arch/x86/include/asm/gart.h b/arch/x86/include/asm/gart.h index 156cd5d18d2a..1d268098ac2e 100644 --- a/arch/x86/include/asm/gart.h +++ b/arch/x86/include/asm/gart.h @@ -1,7 +1,7 @@ #ifndef _ASM_X86_GART_H #define _ASM_X86_GART_H -#include <asm/e820.h> +#include <asm/e820/api.h> extern void set_up_gart_resume(u32, u32); @@ -97,7 +97,7 @@ static inline int aperture_valid(u64 aper_base, u32 aper_size, u32 min_size) printk(KERN_INFO "Aperture beyond 4GB. Ignoring.\n"); return 0; } - if (e820_any_mapped(aper_base, aper_base + aper_size, E820_RAM)) { + if (e820__mapped_any(aper_base, aper_base + aper_size, E820_TYPE_RAM)) { printk(KERN_INFO "Aperture pointing to e820 RAM. Ignoring.\n"); return 0; } diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h index 32007041ef8c..831eb7895535 100644 --- a/arch/x86/include/asm/mpspec.h +++ b/arch/x86/include/asm/mpspec.h @@ -64,7 +64,7 @@ static inline void find_smp_config(void) } #ifdef CONFIG_X86_MPPARSE -extern void early_reserve_e820_mpc_new(void); +extern void e820__memblock_alloc_reserved_mpc_new(void); extern int enable_update_mptable; extern int default_mpc_apic_id(struct mpc_cpu *m); extern void default_smp_read_mpc_oem(struct mpc_table *mpc); @@ -76,7 +76,7 @@ extern void default_mpc_oem_bus_info(struct mpc_bus *m, char *str); extern void default_find_smp_config(void); extern void default_get_smp_config(unsigned int early); #else -static inline void early_reserve_e820_mpc_new(void) { } +static inline void e820__memblock_alloc_reserved_mpc_new(void) { } #define enable_update_mptable 0 #define default_mpc_apic_id NULL #define default_smp_read_mpc_oem NULL diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h index d08eacd298c2..9f1b21f372fe 100644 --- a/arch/x86/include/asm/pci_x86.h +++ b/arch/x86/include/asm/pci_x86.h @@ -4,6 +4,8 @@ * (c) 1999 Martin Mares <mj@ucw.cz> */ +#include <linux/ioport.h> + #undef DEBUG #ifdef DEBUG diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 585ee0d42d18..2197e5322df9 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -2,8 +2,6 @@ #define _ASM_X86_PGTABLE_H #include <asm/page.h> -#include <asm/e820.h> - #include <asm/pgtable_types.h> /* @@ -845,6 +843,7 @@ static inline int pgd_none(pgd_t pgd) extern int direct_gbpages; void init_mem_mapping(void); void early_alloc_pgt_buf(void); +extern void memblock_find_dma_reserve(void); #ifdef CONFIG_X86_64 /* Realmode trampoline initialization. */ diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h index 33cbd3db97b9..64c5e745ebad 100644 --- a/arch/x86/include/asm/xen/page.h +++ b/arch/x86/include/asm/xen/page.h @@ -6,6 +6,7 @@ #include <linux/spinlock.h> #include <linux/pfn.h> #include <linux/mm.h> +#include <linux/device.h> #include <linux/uaccess.h> #include <asm/page.h> diff --git a/arch/x86/include/uapi/asm/bootparam.h b/arch/x86/include/uapi/asm/bootparam.h index 07244ea16765..ddef37b16af2 100644 --- a/arch/x86/include/uapi/asm/bootparam.h +++ b/arch/x86/include/uapi/asm/bootparam.h @@ -34,7 +34,6 @@ #include <linux/screen_info.h> #include <linux/apm_bios.h> #include <linux/edd.h> -#include <asm/e820.h> #include <asm/ist.h> #include <video/edid.h> @@ -111,6 +110,21 @@ struct efi_info { __u32 efi_memmap_hi; }; +/* + * This is the maximum number of entries in struct boot_params::e820_table + * (the zeropage), which is part of the x86 boot protocol ABI: + */ +#define E820_MAX_ENTRIES_ZEROPAGE 128 + +/* + * The E820 memory region entry of the boot protocol ABI: + */ +struct boot_e820_entry { + __u64 addr; + __u64 size; + __u32 type; +} __attribute__((packed)); + /* The so-called "zeropage" */ struct boot_params { struct screen_info screen_info; /* 0x000 */ @@ -153,7 +167,7 @@ struct boot_params { struct setup_header hdr; /* setup header */ /* 0x1f1 */ __u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)]; __u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */ - struct e820entry e820_map[E820MAX]; /* 0x2d0 */ + struct boot_e820_entry e820_table[E820_MAX_ENTRIES_ZEROPAGE]; /* 0x2d0 */ __u8 _pad8[48]; /* 0xcd0 */ struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */ __u8 _pad9[276]; /* 0xeec */ |