1 /* $Id: page.h,v 1.35 2000/04/13 04:45:59 davem Exp $ */
3 #ifndef _SPARC64_PAGE_H
4 #define _SPARC64_PAGE_H
8 /* I have my suspicions... -DaveM */
9 #define PAGE_SIZE (1UL << PAGE_SHIFT)
11 #define PAGE_SIZE (1 << PAGE_SHIFT)
14 #define PAGE_MASK (~(PAGE_SIZE-1))
21 #define BUG() __builtin_trap()
22 #define PAGE_BUG(page) BUG()
24 extern void _clear_page(void *page
);
25 extern void _copy_page(void *to
, void *from
);
26 #define clear_page(X) _clear_page((void *)(X))
27 #define copy_page(X,Y) _copy_page((void *)(X), (void *)(Y))
28 extern void clear_user_page(void *page
, unsigned long vaddr
);
29 extern void copy_user_page(void *to
, void *from
, unsigned long vaddr
);
31 /* GROSS, defining this makes gcc pass these types as aggregates,
32 * and thus on the stack, turn this crap off... -DaveM
35 /* #define STRICT_MM_TYPECHECKS */
37 #ifdef STRICT_MM_TYPECHECKS
38 /* These are used to make use of C type-checking.. */
39 typedef struct { unsigned long pte
; } pte_t
;
40 typedef struct { unsigned long iopte
; } iopte_t
;
41 typedef struct { unsigned int pmd
; } pmd_t
;
42 typedef struct { unsigned int pgd
; } pgd_t
;
43 typedef struct { unsigned long ctxd
; } ctxd_t
;
44 typedef struct { unsigned long pgprot
; } pgprot_t
;
45 typedef struct { unsigned long iopgprot
; } iopgprot_t
;
47 #define pte_val(x) ((x).pte)
48 #define iopte_val(x) ((x).iopte)
49 #define pmd_val(x) ((unsigned long)(x).pmd)
50 #define pgd_val(x) ((unsigned long)(x).pgd)
51 #define ctxd_val(x) ((x).ctxd)
52 #define pgprot_val(x) ((x).pgprot)
53 #define iopgprot_val(x) ((x).iopgprot)
55 #define __pte(x) ((pte_t) { (x) } )
56 #define __iopte(x) ((iopte_t) { (x) } )
57 #define __pmd(x) ((pmd_t) { (x) } )
58 #define __pgd(x) ((pgd_t) { (x) } )
59 #define __ctxd(x) ((ctxd_t) { (x) } )
60 #define __pgprot(x) ((pgprot_t) { (x) } )
61 #define __iopgprot(x) ((iopgprot_t) { (x) } )
64 /* .. while these make it easier on the compiler */
65 typedef unsigned long pte_t
;
66 typedef unsigned long iopte_t
;
67 typedef unsigned int pmd_t
;
68 typedef unsigned int pgd_t
;
69 typedef unsigned long ctxd_t
;
70 typedef unsigned long pgprot_t
;
71 typedef unsigned long iopgprot_t
;
73 #define pte_val(x) (x)
74 #define iopte_val(x) (x)
75 #define pmd_val(x) ((unsigned long)(x))
76 #define pgd_val(x) ((unsigned long)(x))
77 #define ctxd_val(x) (x)
78 #define pgprot_val(x) (x)
79 #define iopgprot_val(x) (x)
82 #define __iopte(x) (x)
86 #define __pgprot(x) (x)
87 #define __iopgprot(x) (x)
89 #endif /* (STRICT_MM_TYPECHECKS) */
91 #define TASK_UNMAPPED_BASE ((current->thread.flags & SPARC_FLAG_32BIT) ? \
92 (0x0000000070000000UL) : (PAGE_OFFSET))
94 #endif /* !(__ASSEMBLY__) */
96 /* to align the pointer to the (next) page boundary */
97 #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
100 /* Do prdele, look what happens to be in %g4... */
101 register unsigned long PAGE_OFFSET
asm("g4");
103 #define PAGE_OFFSET 0xFFFFF80000000000
106 #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
107 #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
108 #define MAP_NR(addr) ((__pa(addr)-phys_base) >> PAGE_SHIFT)
110 #define virt_to_phys __pa
111 #define phys_to_virt __va
115 /* The following structure is used to hold the physical
116 * memory configuration of the machine. This is filled in
117 * probe_memory() and is later used by mem_init() to set up
118 * mem_map[]. We statically allocate SPARC_PHYS_BANKS of
119 * these structs, this is arbitrary. The entry after the
120 * last valid one has num_bytes==0.
123 struct sparc_phys_banks
{
124 unsigned long base_addr
;
125 unsigned long num_bytes
;
128 #define SPARC_PHYS_BANKS 32
130 extern struct sparc_phys_banks sp_banks
[SPARC_PHYS_BANKS
];
132 /* Pure 2^n version of get_order */
133 extern __inline__
int get_order(unsigned long size
)
137 size
= (size
-1) >> (PAGE_SHIFT
-1);
146 #endif /* !(__ASSEMBLY__) */
148 #endif /* !(__KERNEL__) */
150 #endif /* !(_SPARC64_PAGE_H) */