Page MenuHomeFreeBSD
Differential D24220 Diff 69989 sys/powerpc/include/pte.h

Changeset View

Standalone View

View Options

sys/powerpc/include/pte.h

Show First 20 Lines • Show All 289 Lines • ▼ Show 20 Lines
#ifdef __powerpc64__ #ifdef __powerpc64__
#include <machine/tlb.h> #include <machine/tlb.h>
/* /*
* The virtual address is: * The virtual address is:
* *
* 4K page size * 4K page size
* +-----+-----+-----+-------+-------------+-------------+----------------+ * +-----+-----------+-------+-------------+-------------+----------------+
* | - |p2d#h| - | p2d#l | dir# | pte# | off in 4K page | * | - | pg_root |pdir_l1| dir# | pte# | off in 4K page |
* +-----+-----+-----+-------+-------------+-------------+----------------+ * +-----+-----------+-------+-------------+-------------+----------------+
* 63 62 61 60 59 40 39 30 29 ^ 21 20 ^ 12 11 0 * 63 52 51 39 38 30 29 ^ 21 20 ^ 12 11 0
* | | * | |
* index in 1 page of pointers * index in 1 page of pointers
* *
* 1st level - pointers to page table directory (pp2d) * 1st level - Root page table
* *
* pp2d consists of PP2D_NENTRIES entries, each being a pointer to * pp2d consists of PG_ROOT_NENTRIES entries, each being a pointer to
* second level entity, i.e. the page table directory (pdir). * second level entity, i.e. the page table directory (pdir).
*/ */
#define PP2D_H_H 61 #define PG_ROOT_H 51
#define PP2D_H_L 60 #define PG_ROOT_L 39
#define PP2D_L_H 39 #define PG_ROOT_SIZE (1UL << PG_ROOT_L) /* va range mapped by pp2d */
#define PP2D_L_L 30 /* >30 would work with no page table pool */ #define PG_ROOT_SHIFT PG_ROOT_L
#define PP2D_SIZE (1 << PP2D_L_L) /* va range mapped by pp2d */ #define PG_ROOT_NUM (PG_ROOT_H - PG_ROOT_L + 1)
#define PP2D_L_SHIFT PP2D_L_L #define PG_ROOT_MASK ((1 << PG_ROOT_NUM) - 1)
#define PP2D_L_NUM (PP2D_L_H-PP2D_L_L+1) #define PG_ROOT_IDX(va) ((va >> PG_ROOT_SHIFT) & PG_ROOT_MASK)
#define PP2D_L_MASK ((1<<PP2D_L_NUM)-1) #define PG_ROOT_NENTRIES (1 << PG_ROOT_NUM)
#define PP2D_H_SHIFT (PP2D_H_L-PP2D_L_NUM) #define PG_ROOT_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry **)) */
#define PP2D_H_NUM (PP2D_H_H-PP2D_H_L+1)
#define PP2D_H_MASK (((1<<PP2D_H_NUM)-1)<<PP2D_L_NUM)
#define PP2D_IDX(va) (((va >> PP2D_H_SHIFT) & PP2D_H_MASK) | ((va >> PP2D_L_SHIFT) & PP2D_L_MASK))
#define PP2D_NENTRIES (1<<(PP2D_L_NUM+PP2D_H_NUM))
#define PP2D_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry **)) */
/* /*
* 2nd level - page table directory (pdir) * 2nd level - page directory directory (pdir l1)
* *
* pdir consists of PDIR_NENTRIES entries, each being a pointer to * pdir consists of PDIR_NENTRIES entries, each being a pointer to
* second level entity, i.e. the actual page table (ptbl). * second level entity, i.e. the actual page table (ptbl).
*/ */
#define PDIR_H (PP2D_L_L-1) #define PDIR_L1_H (PG_ROOT_L-1)
#define PDIR_L1_L 30
#define PDIR_L1_NUM (PDIR_L1_H-PDIR_L1_L+1)
#define PDIR_L1_SIZE (1 << PDIR_L1_L) /* va range mapped by pdir */
#define PDIR_L1_MASK ((1<<PDIR_L1_NUM)-1)
#define PDIR_L1_SHIFT PDIR_L1_L
#define PDIR_L1_NENTRIES (1<<PDIR_L1_NUM)
#define PDIR_L1_IDX(va) (((va) >> PDIR_L1_SHIFT) & PDIR_L1_MASK)
#define PDIR_L1_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry *)) */
#define PDIR_L1_PAGES ((PDIR_L1_NENTRIES * (1<<PDIR_L1_ENTRY_SHIFT)) / PAGE_SIZE)
/*
* 3rd level - page table directory (pdir)
*
* pdir consists of PDIR_NENTRIES entries, each being a pointer to
* second level entity, i.e. the actual page table (ptbl).
*/
#define PDIR_H (PDIR_L1_L-1)
#define PDIR_L 21 #define PDIR_L 21
#define PDIR_NUM (PDIR_H-PDIR_L+1) #define PDIR_NUM (PDIR_H-PDIR_L+1)
#define PDIR_SIZE (1 << PDIR_L) /* va range mapped by pdir */ #define PDIR_SIZE (1 << PDIR_L) /* va range mapped by pdir */
#define PDIR_MASK ((1<<PDIR_NUM)-1) #define PDIR_MASK ((1<<PDIR_NUM)-1)
#define PDIR_SHIFT PDIR_L #define PDIR_SHIFT PDIR_L
#define PDIR_NENTRIES (1<<PDIR_NUM) #define PDIR_NENTRIES (1<<PDIR_NUM)
#define PDIR_IDX(va) (((va) >> PDIR_SHIFT) & PDIR_MASK) #define PDIR_IDX(va) (((va) >> PDIR_SHIFT) & PDIR_MASK)
#define PDIR_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry *)) */ #define PDIR_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry *)) */
#define PDIR_PAGES ((PDIR_NENTRIES * (1<<PDIR_ENTRY_SHIFT)) / PAGE_SIZE) #define PDIR_PAGES ((PDIR_NENTRIES * (1<<PDIR_ENTRY_SHIFT)) / PAGE_SIZE)
/* /*
* 3rd level - page table (ptbl) * 4th level - page table (ptbl)
* *
* Page table covers PTBL_NENTRIES page table entries. Page * Page table covers PTBL_NENTRIES page table entries. Page
* table entry (pte) is 64 bit wide and defines mapping * table entry (pte) is 64 bit wide and defines mapping
* for a single page. * for a single page.
*/ */
#define PTBL_H (PDIR_L-1) #define PTBL_H (PDIR_L-1)
#define PTBL_L PAGE_SHIFT #define PTBL_L PAGE_SHIFT
#define PTBL_NUM (PTBL_H-PTBL_L+1) #define PTBL_NUM (PTBL_H-PTBL_L+1)
#define PTBL_MASK ((1<<PTBL_NUM)-1) #define PTBL_MASK ((1<<PTBL_NUM)-1)
#define PTBL_SHIFT PTBL_L #define PTBL_SHIFT PTBL_L
#define PTBL_SIZE PAGE_SIZE /* va range mapped by ptbl entry */ #define PTBL_SIZE PAGE_SIZE /* va range mapped by ptbl entry */
#define PTBL_NENTRIES (1<<PTBL_NUM) #define PTBL_NENTRIES (1<<PTBL_NUM)
#define PTBL_IDX(va) ((va >> PTBL_SHIFT) & PTBL_MASK) #define PTBL_IDX(va) ((va >> PTBL_SHIFT) & PTBL_MASK)
#define PTBL_ENTRY_SHIFT 3 /* log2 (sizeof (struct pte_entry)) */ #define PTBL_ENTRY_SHIFT 3 /* log2 (sizeof (struct pte_entry)) */
#define PTBL_PAGES ((PTBL_NENTRIES * (1<<PTBL_ENTRY_SHIFT)) / PAGE_SIZE) #define PTBL_PAGES ((PTBL_NENTRIES * (1<<PTBL_ENTRY_SHIFT)) / PAGE_SIZE)
#define KERNEL_LINEAR_MAX 0xc000000040000000
#else #else
/* /*
* 1st level - page table directory (pdir) * 1st level - page table directory (pdir)
* *
* pdir consists of 1024 entries, each being a pointer to * pdir consists of 1024 entries, each being a pointer to
* second level entity, i.e. the actual page table (ptbl). * second level entity, i.e. the actual page table (ptbl).
*/ */
#define PDIR_SHIFT 22 #define PDIR_SHIFT 22
Show All 30 Lines