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sys/i386/include/pmap.h
Show First 20 Lines • Show All 59 Lines • ▼ Show 20 Lines | |||||
#define PG_M 0x040 /* D Dirty */ | #define PG_M 0x040 /* D Dirty */ | ||||
#define PG_PS 0x080 /* PS Page size (0=4k,1=4M) */ | #define PG_PS 0x080 /* PS Page size (0=4k,1=4M) */ | ||||
#define PG_PTE_PAT 0x080 /* PAT PAT index */ | #define PG_PTE_PAT 0x080 /* PAT PAT index */ | ||||
#define PG_G 0x100 /* G Global */ | #define PG_G 0x100 /* G Global */ | ||||
#define PG_AVAIL1 0x200 /* / Available for system */ | #define PG_AVAIL1 0x200 /* / Available for system */ | ||||
#define PG_AVAIL2 0x400 /* < programmers use */ | #define PG_AVAIL2 0x400 /* < programmers use */ | ||||
#define PG_AVAIL3 0x800 /* \ */ | #define PG_AVAIL3 0x800 /* \ */ | ||||
#define PG_PDE_PAT 0x1000 /* PAT PAT index */ | #define PG_PDE_PAT 0x1000 /* PAT PAT index */ | ||||
#if defined(PAE) || defined(PAE_TABLES) | |||||
#define PG_NX (1ull<<63) /* No-execute */ | #define PG_NX (1ull<<63) /* No-execute */ | ||||
#endif | |||||
/* Our various interpretations of the above */ | /* Our various interpretations of the above */ | ||||
#define PG_W PG_AVAIL1 /* "Wired" pseudoflag */ | #define PG_W PG_AVAIL1 /* "Wired" pseudoflag */ | ||||
#define PG_MANAGED PG_AVAIL2 | #define PG_MANAGED PG_AVAIL2 | ||||
#define PG_PROMOTED PG_AVAIL3 /* PDE only */ | #define PG_PROMOTED PG_AVAIL3 /* PDE only */ | ||||
#if defined(PAE) || defined(PAE_TABLES) | |||||
#define PG_FRAME (0x000ffffffffff000ull) | |||||
#define PG_PS_FRAME (0x000fffffffe00000ull) | |||||
#else | |||||
#define PG_FRAME (~PAGE_MASK) | |||||
#define PG_PS_FRAME (0xffc00000) | |||||
#endif | |||||
#define PG_PROT (PG_RW|PG_U) /* all protection bits . */ | #define PG_PROT (PG_RW|PG_U) /* all protection bits . */ | ||||
#define PG_N (PG_NC_PWT|PG_NC_PCD) /* Non-cacheable */ | #define PG_N (PG_NC_PWT|PG_NC_PCD) /* Non-cacheable */ | ||||
/* Page level cache control fields used to determine the PAT type */ | /* Page level cache control fields used to determine the PAT type */ | ||||
#define PG_PDE_CACHE (PG_PDE_PAT | PG_NC_PWT | PG_NC_PCD) | #define PG_PDE_CACHE (PG_PDE_PAT | PG_NC_PWT | PG_NC_PCD) | ||||
#define PG_PTE_CACHE (PG_PTE_PAT | PG_NC_PWT | PG_NC_PCD) | #define PG_PTE_CACHE (PG_PTE_PAT | PG_NC_PWT | PG_NC_PCD) | ||||
/* | /* | ||||
Show All 9 Lines | |||||
#define PGEX_P 0x01 /* Protection violation vs. not present */ | #define PGEX_P 0x01 /* Protection violation vs. not present */ | ||||
#define PGEX_W 0x02 /* during a Write cycle */ | #define PGEX_W 0x02 /* during a Write cycle */ | ||||
#define PGEX_U 0x04 /* access from User mode (UPL) */ | #define PGEX_U 0x04 /* access from User mode (UPL) */ | ||||
#define PGEX_RSV 0x08 /* reserved PTE field is non-zero */ | #define PGEX_RSV 0x08 /* reserved PTE field is non-zero */ | ||||
#define PGEX_I 0x10 /* during an instruction fetch */ | #define PGEX_I 0x10 /* during an instruction fetch */ | ||||
/* | /* | ||||
* Size of Kernel address space. This is the number of page table pages | |||||
* (4MB each) to use for the kernel. 256 pages == 1 Gigabyte. | |||||
* This **MUST** be a multiple of 4 (eg: 252, 256, 260, etc). | |||||
* For PAE, the page table page unit size is 2MB. This means that 512 pages | |||||
* is 1 Gigabyte. Double everything. It must be a multiple of 8 for PAE. | |||||
*/ | |||||
#if defined(PAE) || defined(PAE_TABLES) | |||||
#define KVA_PAGES (512*4) | |||||
#else | |||||
#define KVA_PAGES (256*4) | |||||
#endif | |||||
/* | |||||
* Pte related macros | * Pte related macros | ||||
*/ | */ | ||||
#define VADDR(pdi, pti) ((vm_offset_t)(((pdi)<<PDRSHIFT)|((pti)<<PAGE_SHIFT))) | #define VADDR(pdi, pti) ((vm_offset_t)(((pdi)<<PDRSHIFT)|((pti)<<PAGE_SHIFT))) | ||||
/* | |||||
* The initial number of kernel page table pages that are constructed | |||||
* by pmap_cold() must be sufficient to map vm_page_array[]. That number can | |||||
* be calculated as follows: | |||||
* max_phys / PAGE_SIZE * sizeof(struct vm_page) / NBPDR | |||||
* PAE: max_phys 16G, sizeof(vm_page) 76, NBPDR 2M, 152 page table pages. | |||||
* PAE_TABLES: max_phys 4G, sizeof(vm_page) 68, NBPDR 2M, 36 page table pages. | |||||
* Non-PAE: max_phys 4G, sizeof(vm_page) 68, NBPDR 4M, 18 page table pages. | |||||
*/ | |||||
#ifndef NKPT | |||||
#if defined(PAE) | |||||
#define NKPT 240 | |||||
#elif defined(PAE_TABLES) | |||||
#define NKPT 60 | |||||
#else | |||||
#define NKPT 30 | |||||
#endif | |||||
#endif | |||||
#ifndef NKPDE | #ifndef NKPDE | ||||
#define NKPDE (KVA_PAGES) /* number of page tables/pde's */ | #define NKPDE (KVA_PAGES) /* number of page tables/pde's */ | ||||
#endif | #endif | ||||
#define PDRSHIFT_PAE 21 /* LOG2(NBPDR) */ | |||||
#define PG_FRAME_PAE (0x000ffffffffff000ull) | |||||
#define PG_PS_FRAME_PAE (0x000fffffffe00000ull) | |||||
#define PDRSHIFT_NOPAE 22 | |||||
#define PG_FRAME_NOPAE (~PAGE_MASK) | |||||
#define PG_PS_FRAME_NOPAE (0xffc00000) | |||||
/* | /* | ||||
* The *PTDI values control the layout of virtual memory | * The *PTDI values control the layout of virtual memory | ||||
*/ | */ | ||||
#define KPTDI 0 /* start of kernel virtual pde's */ | #define KPTDI 0 /* start of kernel virtual pde's */ | ||||
#define LOWPTDI 1 /* low memory map pde */ | /* ptd entry that points to ptd */ | ||||
#define KERNPTDI 2 /* start of kernel text pde */ | #define PTDPTDI (NPDEPTD - NTRPPTD - NPGPTD) | ||||
#define PTDPTDI (NPDEPTD - 1 - NPGPTD) /* ptd entry that points | #define TRPTDI (NPDEPTD - NTRPPTD) /* u/k trampoline ptd */ | ||||
to ptd! */ | |||||
#define TRPTDI (NPDEPTD - 1) /* u/k trampoline ptd */ | |||||
/* | /* | ||||
* XXX doesn't really belong here I guess... | * XXX doesn't really belong here I guess... | ||||
*/ | */ | ||||
#define ISA_HOLE_START 0xa0000 | #define ISA_HOLE_START 0xa0000 | ||||
#define ISA_HOLE_LENGTH (0x100000-ISA_HOLE_START) | #define ISA_HOLE_LENGTH (0x100000-ISA_HOLE_START) | ||||
#ifndef LOCORE | #ifndef LOCORE | ||||
#include <sys/queue.h> | #include <sys/queue.h> | ||||
#include <sys/_cpuset.h> | #include <sys/_cpuset.h> | ||||
#include <sys/_lock.h> | #include <sys/_lock.h> | ||||
#include <sys/_mutex.h> | #include <sys/_mutex.h> | ||||
#include <vm/_vm_radix.h> | #include <vm/_vm_radix.h> | ||||
#if defined(PAE) || defined(PAE_TABLES) | |||||
typedef uint64_t pdpt_entry_t; | |||||
typedef uint64_t pd_entry_t; | |||||
typedef uint64_t pt_entry_t; | |||||
#define PTESHIFT (3) | |||||
#define PDESHIFT (3) | |||||
#else | |||||
typedef uint32_t pd_entry_t; | |||||
typedef uint32_t pt_entry_t; | |||||
#define PTESHIFT (2) | |||||
#define PDESHIFT (2) | |||||
#endif | |||||
/* | /* | ||||
* Address of current address space page table maps and directories. | * Address of current address space page table maps and directories. | ||||
*/ | */ | ||||
#ifdef _KERNEL | #ifdef _KERNEL | ||||
#include <machine/atomic.h> | |||||
extern pt_entry_t PTmap[]; | |||||
extern pd_entry_t PTD[]; | |||||
extern pd_entry_t PTDpde[]; | |||||
#if defined(PAE) || defined(PAE_TABLES) | |||||
extern pdpt_entry_t *IdlePDPT; | |||||
#endif | |||||
extern pd_entry_t *IdlePTD; /* physical address of "Idle" state directory */ | |||||
/* | /* | ||||
* Translate a virtual address to the kernel virtual address of its page table | |||||
* entry (PTE). This can be used recursively. If the address of a PTE as | |||||
* previously returned by this macro is itself given as the argument, then the | |||||
* address of the page directory entry (PDE) that maps the PTE will be | |||||
* returned. | |||||
* | |||||
* This macro may be used before pmap_bootstrap() is called. | |||||
*/ | |||||
#define vtopte(va) (PTmap + i386_btop(va)) | |||||
/* | |||||
* Translate a virtual address to its physical address. | * Translate a virtual address to its physical address. | ||||
* | * | ||||
* This macro may be used before pmap_bootstrap() is called. | * This macro may be used before pmap_bootstrap() is called. | ||||
*/ | */ | ||||
#define vtophys(va) pmap_kextract((vm_offset_t)(va)) | #define vtophys(va) pmap_kextract((vm_offset_t)(va)) | ||||
/* | |||||
* KPTmap is a linear mapping of the kernel page table. It differs from the | |||||
* recursive mapping in two ways: (1) it only provides access to kernel page | |||||
* table pages, and not user page table pages, and (2) it provides access to | |||||
* a kernel page table page after the corresponding virtual addresses have | |||||
* been promoted to a 2/4MB page mapping. | |||||
* | |||||
* KPTmap is first initialized by pmap_cold() to support just NPKT page table | |||||
* pages. Later, it is reinitialized by pmap_bootstrap() to allow for | |||||
* expansion of the kernel page table. | |||||
*/ | |||||
extern pt_entry_t *KPTmap; | |||||
#if (defined(PAE) || defined(PAE_TABLES)) | |||||
#define pde_cmpset(pdep, old, new) atomic_cmpset_64_i586(pdep, old, new) | |||||
#define pte_load_store(ptep, pte) atomic_swap_64_i586(ptep, pte) | |||||
#define pte_load_clear(ptep) atomic_swap_64_i586(ptep, 0) | |||||
#define pte_store(ptep, pte) atomic_store_rel_64_i586(ptep, pte) | |||||
#define pte_load(ptep) atomic_load_acq_64_i586(ptep) | |||||
extern pt_entry_t pg_nx; | |||||
#else /* !(PAE || PAE_TABLES) */ | |||||
#define pde_cmpset(pdep, old, new) atomic_cmpset_int(pdep, old, new) | |||||
#define pte_load_store(ptep, pte) atomic_swap_int(ptep, pte) | |||||
#define pte_load_clear(ptep) atomic_swap_int(ptep, 0) | |||||
#define pte_store(ptep, pte) do { \ | |||||
*(u_int *)(ptep) = (u_int)(pte); \ | |||||
} while (0) | |||||
#define pte_load(ptep) atomic_load_acq_int(ptep) | |||||
#endif /* !(PAE || PAE_TABLES) */ | |||||
#define pte_clear(ptep) pte_store(ptep, 0) | #define pte_clear(ptep) pte_store(ptep, 0) | ||||
#define pde_store(pdep, pde) pte_store(pdep, pde) | #define pde_store(pdep, pde) pte_store(pdep, pde) | ||||
/* | |||||
* Extract from the kernel page table the physical address that is mapped by | |||||
* the given virtual address "va". | |||||
* | |||||
* This function may be used before pmap_bootstrap() is called. | |||||
*/ | |||||
static __inline vm_paddr_t | |||||
pmap_kextract(vm_offset_t va) | |||||
{ | |||||
vm_paddr_t pa; | |||||
if ((pa = pte_load(&PTD[va >> PDRSHIFT])) & PG_PS) { | |||||
pa = (pa & PG_PS_FRAME) | (va & PDRMASK); | |||||
} else { | |||||
/* | |||||
* Beware of a concurrent promotion that changes the PDE at | |||||
* this point! For example, vtopte() must not be used to | |||||
* access the PTE because it would use the new PDE. It is, | |||||
* however, safe to use the old PDE because the page table | |||||
* page is preserved by the promotion. | |||||
*/ | |||||
pa = KPTmap[i386_btop(va)]; | |||||
pa = (pa & PG_FRAME) | (va & PAGE_MASK); | |||||
} | |||||
return (pa); | |||||
} | |||||
#endif /* _KERNEL */ | #endif /* _KERNEL */ | ||||
/* | /* | ||||
* Pmap stuff | * Pmap stuff | ||||
*/ | */ | ||||
struct pv_entry; | struct pv_entry; | ||||
struct pv_chunk; | struct pv_chunk; | ||||
struct md_page { | struct md_page { | ||||
TAILQ_HEAD(,pv_entry) pv_list; | TAILQ_HEAD(,pv_entry) pv_list; | ||||
int pat_mode; | int pat_mode; | ||||
}; | }; | ||||
#define PMAP_EXTERN_FIELDS \ | |||||
cpuset_t pm_active; /* active on cpus */ \ | |||||
struct mtx pm_mtx; \ | |||||
struct pmap_statistics pm_stats; /* pmap statistics */ | |||||
struct pmap_KBI { | |||||
PMAP_EXTERN_FIELDS | |||||
int32_t pm_fill[32]; | |||||
}; | |||||
#ifdef PMTYPE | |||||
struct pmap { | struct pmap { | ||||
struct mtx pm_mtx; | PMAP_EXTERN_FIELDS | ||||
pd_entry_t *pm_pdir; /* KVA of page directory */ | pd_entry_t *pm_pdir; /* KVA of page directory */ | ||||
TAILQ_HEAD(,pv_chunk) pm_pvchunk; /* list of mappings in pmap */ | TAILQ_HEAD(,pv_chunk) pm_pvchunk; /* list of mappings in pmap */ | ||||
cpuset_t pm_active; /* active on cpus */ | |||||
struct pmap_statistics pm_stats; /* pmap statistics */ | |||||
LIST_ENTRY(pmap) pm_list; /* List of all pmaps */ | LIST_ENTRY(pmap) pm_list; /* List of all pmaps */ | ||||
#if defined(PAE) || defined(PAE_TABLES) | |||||
pdpt_entry_t *pm_pdpt; /* KVA of page directory pointer | pdpt_entry_t *pm_pdpt; /* KVA of page directory pointer | ||||
table */ | table */ | ||||
#endif | |||||
struct vm_radix pm_root; /* spare page table pages */ | struct vm_radix pm_root; /* spare page table pages */ | ||||
vm_page_t pm_ptdpg[NPGPTD]; | vm_page_t pm_ptdpg[NPGPTD]; | ||||
}; | }; | ||||
#else | |||||
#define pmap pmap_KBI | |||||
#endif | |||||
typedef struct pmap *pmap_t; | typedef struct pmap *pmap_t; | ||||
#ifdef _KERNEL | #ifdef _KERNEL | ||||
extern struct pmap kernel_pmap_store; | extern struct pmap kernel_pmap_store; | ||||
#define kernel_pmap (&kernel_pmap_store) | #define kernel_pmap (&kernel_pmap_store) | ||||
#define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) | #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) | ||||
Show All 28 Lines | struct pv_chunk { | ||||
TAILQ_ENTRY(pv_chunk) pc_list; | TAILQ_ENTRY(pv_chunk) pc_list; | ||||
uint32_t pc_map[_NPCM]; /* bitmap; 1 = free */ | uint32_t pc_map[_NPCM]; /* bitmap; 1 = free */ | ||||
TAILQ_ENTRY(pv_chunk) pc_lru; | TAILQ_ENTRY(pv_chunk) pc_lru; | ||||
struct pv_entry pc_pventry[_NPCPV]; | struct pv_entry pc_pventry[_NPCPV]; | ||||
}; | }; | ||||
#ifdef _KERNEL | #ifdef _KERNEL | ||||
extern caddr_t CADDR3; | |||||
extern pt_entry_t *CMAP3; | |||||
extern vm_paddr_t phys_avail[]; | extern vm_paddr_t phys_avail[]; | ||||
extern vm_paddr_t dump_avail[]; | extern vm_paddr_t dump_avail[]; | ||||
extern char *ptvmmap; /* poor name! */ | extern char *ptvmmap; /* poor name! */ | ||||
extern vm_offset_t virtual_avail; | extern vm_offset_t virtual_avail; | ||||
extern vm_offset_t virtual_end; | extern vm_offset_t virtual_end; | ||||
#define pmap_page_get_memattr(m) ((vm_memattr_t)(m)->md.pat_mode) | #define pmap_page_get_memattr(m) ((vm_memattr_t)(m)->md.pat_mode) | ||||
#define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0) | #define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0) | ||||
#define pmap_unmapbios(va, sz) pmap_unmapdev((va), (sz)) | #define pmap_unmapbios(va, sz) pmap_unmapdev((va), (sz)) | ||||
struct sf_buf; | |||||
/* | /* | ||||
* Only the following functions or macros may be used before pmap_bootstrap() | * Only the following functions or macros may be used before pmap_bootstrap() | ||||
* is called: pmap_kenter(), pmap_kextract(), pmap_kremove(), vtophys(), and | * is called: pmap_kenter(), pmap_kextract(), pmap_kremove(), vtophys(), and | ||||
* vtopte(). | * vtopte(). | ||||
*/ | */ | ||||
void pmap_activate_boot(pmap_t pmap); | void pmap_activate_boot(pmap_t pmap); | ||||
void pmap_basemem_setup(u_int basemem); | |||||
void *pmap_bios16_enter(void); | |||||
void pmap_bios16_leave(void *handle); | |||||
void pmap_bootstrap(vm_paddr_t); | void pmap_bootstrap(vm_paddr_t); | ||||
int pmap_cache_bits(pmap_t, int mode, boolean_t is_pde); | int pmap_cache_bits(pmap_t, int mode, boolean_t is_pde); | ||||
int pmap_change_attr(vm_offset_t, vm_size_t, int); | int pmap_change_attr(vm_offset_t, vm_size_t, int); | ||||
caddr_t pmap_cmap3(vm_paddr_t pa, u_int pte_bits); | |||||
void pmap_cp_slow0_map(vm_offset_t kaddr, int plen, vm_page_t *ma); | |||||
void pmap_flush_page(vm_page_t m); | |||||
u_int pmap_get_kcr3(void); | |||||
u_int pmap_get_cr3(pmap_t); | |||||
vm_offset_t pmap_get_map_low(void); | |||||
vm_offset_t pmap_get_vm_maxuser_address(void); | |||||
void pmap_init_pat(void); | void pmap_init_pat(void); | ||||
void pmap_kenter(vm_offset_t va, vm_paddr_t pa); | void pmap_kenter(vm_offset_t va, vm_paddr_t pa); | ||||
void *pmap_kenter_temporary(vm_paddr_t pa, int i); | void *pmap_kenter_temporary(vm_paddr_t pa, int i); | ||||
vm_paddr_t pmap_kextract(vm_offset_t va); | |||||
void pmap_kremove(vm_offset_t); | void pmap_kremove(vm_offset_t); | ||||
void pmap_ksetrw(vm_offset_t va); | |||||
void *pmap_mapbios(vm_paddr_t, vm_size_t); | void *pmap_mapbios(vm_paddr_t, vm_size_t); | ||||
void *pmap_mapdev(vm_paddr_t, vm_size_t); | void *pmap_mapdev(vm_paddr_t, vm_size_t); | ||||
void *pmap_mapdev_attr(vm_paddr_t, vm_size_t, int); | void *pmap_mapdev_attr(vm_paddr_t, vm_size_t, int); | ||||
boolean_t pmap_page_is_mapped(vm_page_t m); | boolean_t pmap_page_is_mapped(vm_page_t m); | ||||
void pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma); | void pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma); | ||||
vm_paddr_t pmap_pg_frame(vm_paddr_t pa); | |||||
bool pmap_ps_enabled(pmap_t pmap); | bool pmap_ps_enabled(pmap_t pmap); | ||||
void pmap_remap_lower(bool); | |||||
void pmap_remap_lowptdi(bool); | |||||
void pmap_set_nx(void); | |||||
void pmap_sf_buf_map(struct sf_buf *sf); | |||||
void pmap_unmapdev(vm_offset_t, vm_size_t); | void pmap_unmapdev(vm_offset_t, vm_size_t); | ||||
pt_entry_t *pmap_pte(pmap_t, vm_offset_t) __pure2; | |||||
void pmap_invalidate_page(pmap_t, vm_offset_t); | void pmap_invalidate_page(pmap_t, vm_offset_t); | ||||
void pmap_invalidate_range(pmap_t, vm_offset_t, vm_offset_t); | void pmap_invalidate_range(pmap_t, vm_offset_t, vm_offset_t); | ||||
void pmap_invalidate_all(pmap_t); | void pmap_invalidate_all(pmap_t); | ||||
void pmap_invalidate_cache(void); | void pmap_invalidate_cache(void); | ||||
void pmap_invalidate_cache_pages(vm_page_t *pages, int count); | void pmap_invalidate_cache_pages(vm_page_t *pages, int count); | ||||
void pmap_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva); | void pmap_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva); | ||||
void pmap_force_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva); | void pmap_force_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva); | ||||
void *pmap_trm_alloc(size_t size, int flags); | void *pmap_trm_alloc(size_t size, int flags); | ||||
void pmap_trm_free(void *addr, size_t size); | void pmap_trm_free(void *addr, size_t size); | ||||
void invltlb_glob(void); | void invltlb_glob(void); | ||||
struct thread; | |||||
extern int pae_mode; | |||||
extern int i386_pmap_VM_NFREEORDER; | |||||
extern int i386_pmap_VM_LEVEL_0_ORDER; | |||||
extern int i386_pmap_PDRSHIFT; | |||||
#endif /* _KERNEL */ | #endif /* _KERNEL */ | ||||
#endif /* !LOCORE */ | #endif /* !LOCORE */ | ||||
#endif /* !_MACHINE_PMAP_H_ */ | #endif /* !_MACHINE_PMAP_H_ */ |