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authorTony Luck <tony.luck@intel.com>2008-08-01 13:13:32 -0400
committerTony Luck <tony.luck@intel.com>2008-08-01 13:21:21 -0400
commit7f30491ccd28627742e37899453ae20e3da8e18f (patch)
tree7291c0a26ed3a31acf9542857af3981d278f5de8 /include/asm-ia64/page.h
parent94ad374a0751f40d25e22e036c37f7263569d24c (diff)
[IA64] Move include/asm-ia64 to arch/ia64/include/asm
After moving the the include files there were a few clean-ups: 1) Some files used #include <asm-ia64/xyz.h>, changed to <asm/xyz.h> 2) Some comments alerted maintainers to look at various header files to make matching updates if certain code were to be changed. Updated these comments to use the new include paths. 3) Some header files mentioned their own names in initial comments. Just deleted these self references. Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64/page.h')
-rw-r--r--include/asm-ia64/page.h223
1 files changed, 0 insertions, 223 deletions
diff --git a/include/asm-ia64/page.h b/include/asm-ia64/page.h
deleted file mode 100644
index 5f271bc712ee..000000000000
--- a/include/asm-ia64/page.h
+++ /dev/null
@@ -1,223 +0,0 @@
1#ifndef _ASM_IA64_PAGE_H
2#define _ASM_IA64_PAGE_H
3/*
4 * Pagetable related stuff.
5 *
6 * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
7 * David Mosberger-Tang <davidm@hpl.hp.com>
8 */
9
10#include <asm/intrinsics.h>
11#include <asm/types.h>
12
13/*
14 * The top three bits of an IA64 address are its Region Number.
15 * Different regions are assigned to different purposes.
16 */
17#define RGN_SHIFT (61)
18#define RGN_BASE(r) (__IA64_UL_CONST(r)<<RGN_SHIFT)
19#define RGN_BITS (RGN_BASE(-1))
20
21#define RGN_KERNEL 7 /* Identity mapped region */
22#define RGN_UNCACHED 6 /* Identity mapped I/O region */
23#define RGN_GATE 5 /* Gate page, Kernel text, etc */
24#define RGN_HPAGE 4 /* For Huge TLB pages */
25
26/*
27 * PAGE_SHIFT determines the actual kernel page size.
28 */
29#if defined(CONFIG_IA64_PAGE_SIZE_4KB)
30# define PAGE_SHIFT 12
31#elif defined(CONFIG_IA64_PAGE_SIZE_8KB)
32# define PAGE_SHIFT 13
33#elif defined(CONFIG_IA64_PAGE_SIZE_16KB)
34# define PAGE_SHIFT 14
35#elif defined(CONFIG_IA64_PAGE_SIZE_64KB)
36# define PAGE_SHIFT 16
37#else
38# error Unsupported page size!
39#endif
40
41#define PAGE_SIZE (__IA64_UL_CONST(1) << PAGE_SHIFT)
42#define PAGE_MASK (~(PAGE_SIZE - 1))
43
44#define PERCPU_PAGE_SHIFT 16 /* log2() of max. size of per-CPU area */
45#define PERCPU_PAGE_SIZE (__IA64_UL_CONST(1) << PERCPU_PAGE_SHIFT)
46
47
48#ifdef CONFIG_HUGETLB_PAGE
49# define HPAGE_REGION_BASE RGN_BASE(RGN_HPAGE)
50# define HPAGE_SHIFT hpage_shift
51# define HPAGE_SHIFT_DEFAULT 28 /* check ia64 SDM for architecture supported size */
52# define HPAGE_SIZE (__IA64_UL_CONST(1) << HPAGE_SHIFT)
53# define HPAGE_MASK (~(HPAGE_SIZE - 1))
54
55# define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
56#endif /* CONFIG_HUGETLB_PAGE */
57
58#ifdef __ASSEMBLY__
59# define __pa(x) ((x) - PAGE_OFFSET)
60# define __va(x) ((x) + PAGE_OFFSET)
61#else /* !__ASSEMBLY */
62# define STRICT_MM_TYPECHECKS
63
64extern void clear_page (void *page);
65extern void copy_page (void *to, void *from);
66
67/*
68 * clear_user_page() and copy_user_page() can't be inline functions because
69 * flush_dcache_page() can't be defined until later...
70 */
71#define clear_user_page(addr, vaddr, page) \
72do { \
73 clear_page(addr); \
74 flush_dcache_page(page); \
75} while (0)
76
77#define copy_user_page(to, from, vaddr, page) \
78do { \
79 copy_page((to), (from)); \
80 flush_dcache_page(page); \
81} while (0)
82
83
84#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
85({ \
86 struct page *page = alloc_page_vma( \
87 GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr); \
88 if (page) \
89 flush_dcache_page(page); \
90 page; \
91})
92
93#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
94
95#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
96
97#ifdef CONFIG_VIRTUAL_MEM_MAP
98extern int ia64_pfn_valid (unsigned long pfn);
99#else
100# define ia64_pfn_valid(pfn) 1
101#endif
102
103#ifdef CONFIG_VIRTUAL_MEM_MAP
104extern struct page *vmem_map;
105#ifdef CONFIG_DISCONTIGMEM
106# define page_to_pfn(page) ((unsigned long) (page - vmem_map))
107# define pfn_to_page(pfn) (vmem_map + (pfn))
108#else
109# include <asm-generic/memory_model.h>
110#endif
111#else
112# include <asm-generic/memory_model.h>
113#endif
114
115#ifdef CONFIG_FLATMEM
116# define pfn_valid(pfn) (((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
117#elif defined(CONFIG_DISCONTIGMEM)
118extern unsigned long min_low_pfn;
119extern unsigned long max_low_pfn;
120# define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))
121#endif
122
123#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
124#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
125#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
126
127typedef union ia64_va {
128 struct {
129 unsigned long off : 61; /* intra-region offset */
130 unsigned long reg : 3; /* region number */
131 } f;
132 unsigned long l;
133 void *p;
134} ia64_va;
135
136/*
137 * Note: These macros depend on the fact that PAGE_OFFSET has all
138 * region bits set to 1 and all other bits set to zero. They are
139 * expressed in this way to ensure they result in a single "dep"
140 * instruction.
141 */
142#define __pa(x) ({ia64_va _v; _v.l = (long) (x); _v.f.reg = 0; _v.l;})
143#define __va(x) ({ia64_va _v; _v.l = (long) (x); _v.f.reg = -1; _v.p;})
144
145#define REGION_NUMBER(x) ({ia64_va _v; _v.l = (long) (x); _v.f.reg;})
146#define REGION_OFFSET(x) ({ia64_va _v; _v.l = (long) (x); _v.f.off;})
147
148#ifdef CONFIG_HUGETLB_PAGE
149# define htlbpage_to_page(x) (((unsigned long) REGION_NUMBER(x) << 61) \
150 | (REGION_OFFSET(x) >> (HPAGE_SHIFT-PAGE_SHIFT)))
151# define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
152extern unsigned int hpage_shift;
153#endif
154
155static __inline__ int
156get_order (unsigned long size)
157{
158 long double d = size - 1;
159 long order;
160
161 order = ia64_getf_exp(d);
162 order = order - PAGE_SHIFT - 0xffff + 1;
163 if (order < 0)
164 order = 0;
165 return order;
166}
167
168#endif /* !__ASSEMBLY__ */
169
170#ifdef STRICT_MM_TYPECHECKS
171 /*
172 * These are used to make use of C type-checking..
173 */
174 typedef struct { unsigned long pte; } pte_t;
175 typedef struct { unsigned long pmd; } pmd_t;
176#ifdef CONFIG_PGTABLE_4
177 typedef struct { unsigned long pud; } pud_t;
178#endif
179 typedef struct { unsigned long pgd; } pgd_t;
180 typedef struct { unsigned long pgprot; } pgprot_t;
181 typedef struct page *pgtable_t;
182
183# define pte_val(x) ((x).pte)
184# define pmd_val(x) ((x).pmd)
185#ifdef CONFIG_PGTABLE_4
186# define pud_val(x) ((x).pud)
187#endif
188# define pgd_val(x) ((x).pgd)
189# define pgprot_val(x) ((x).pgprot)
190
191# define __pte(x) ((pte_t) { (x) } )
192# define __pgprot(x) ((pgprot_t) { (x) } )
193
194#else /* !STRICT_MM_TYPECHECKS */
195 /*
196 * .. while these make it easier on the compiler
197 */
198# ifndef __ASSEMBLY__
199 typedef unsigned long pte_t;
200 typedef unsigned long pmd_t;
201 typedef unsigned long pgd_t;
202 typedef unsigned long pgprot_t;
203 typedef struct page *pgtable_t;
204# endif
205
206# define pte_val(x) (x)
207# define pmd_val(x) (x)
208# define pgd_val(x) (x)
209# define pgprot_val(x) (x)
210
211# define __pte(x) (x)
212# define __pgd(x) (x)
213# define __pgprot(x) (x)
214#endif /* !STRICT_MM_TYPECHECKS */
215
216#define PAGE_OFFSET RGN_BASE(RGN_KERNEL)
217
218#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
219 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | \
220 (((current->personality & READ_IMPLIES_EXEC) != 0) \
221 ? VM_EXEC : 0))
222
223#endif /* _ASM_IA64_PAGE_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 18:34:58 -0500