patch-2.4.20 linux-2.4.20/include/asm-parisc/mmu.h
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- Lines: 70
- Date:
Thu Nov 28 15:53:15 2002
- Orig file:
linux-2.4.19/include/asm-parisc/mmu.h
- Orig date:
Fri Dec 29 14:07:23 2000
diff -urN linux-2.4.19/include/asm-parisc/mmu.h linux-2.4.20/include/asm-parisc/mmu.h
@@ -1,68 +1,7 @@
-/*
- * parisc mmu structures
- */
-
#ifndef _PARISC_MMU_H_
#define _PARISC_MMU_H_
-#ifndef __ASSEMBLY__
-
-/* Default "unsigned long" context */
+/* On parisc, we store the space id here */
typedef unsigned long mm_context_t;
-/* Hardware Page Table Entry */
-typedef struct _PTE {
- unsigned long v:1; /* Entry is valid */
- unsigned long tag:31; /* Unique Tag */
-
- unsigned long r:1; /* referenced */
- unsigned long os_1:1; /* */
- unsigned long t:1; /* page reference trap */
- unsigned long d:1; /* dirty */
- unsigned long b:1; /* break */
- unsigned long type:3; /* access type */
- unsigned long pl1:2; /* PL1 (execute) */
- unsigned long pl2:2; /* PL2 (write) */
- unsigned long u:1; /* uncacheable */
- unsigned long id:1; /* access id */
- unsigned long os_2:1; /* */
-
- unsigned long os_3:3; /* */
- unsigned long res_1:4; /* */
- unsigned long phys:20; /* physical page number */
- unsigned long os_4:2; /* */
- unsigned long res_2:3; /* */
-
- unsigned long next; /* pointer to next page */
-} PTE;
-
-/*
- * Simulated two-level MMU. This structure is used by the kernel
- * to keep track of MMU mappings and is used to update/maintain
- * the hardware HASH table which is really a cache of mappings.
- *
- * The simulated structures mimic the hardware available on other
- * platforms, notably the 80x86 and 680x0.
- */
-
-typedef struct _pte {
- unsigned long page_num:20;
- unsigned long flags:12; /* Page flags (some unused bits) */
-} pte;
-
-#define PD_SHIFT (10+12) /* Page directory */
-#define PD_MASK 0x02FF
-#define PT_SHIFT (12) /* Page Table */
-#define PT_MASK 0x02FF
-#define PG_SHIFT (12) /* Page Entry */
-
-/* MMU context */
-
-typedef struct _MMU_context {
- long pid[4];
- pte **pmap; /* Two-level page-map structure */
-} MMU_context;
-
-#endif /* __ASSEMBLY__ */
-
#endif /* _PARISC_MMU_H_ */
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