patch-2.4.20 linux-2.4.20/include/asm-parisc/mmu.h

• 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_ */