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-rw-r--r--include/asm-ppc64/page.h262
1 files changed, 0 insertions, 262 deletions
diff --git a/include/asm-ppc64/page.h b/include/asm-ppc64/page.h
deleted file mode 100644
index a15422bcf30d..000000000000
--- a/include/asm-ppc64/page.h
+++ /dev/null
@@ -1,262 +0,0 @@
1#ifndef _PPC64_PAGE_H
2#define _PPC64_PAGE_H
3
4/*
5 * Copyright (C) 2001 PPC64 Team, IBM Corp
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 */
12
13#include <linux/config.h>
14
15#ifdef __ASSEMBLY__
16 #define ASM_CONST(x) x
17#else
18 #define __ASM_CONST(x) x##UL
19 #define ASM_CONST(x) __ASM_CONST(x)
20#endif
21
22/* PAGE_SHIFT determines the page size */
23#define PAGE_SHIFT 12
24#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
25#define PAGE_MASK (~(PAGE_SIZE-1))
26
27#define SID_SHIFT 28
28#define SID_MASK 0xfffffffffUL
29#define ESID_MASK 0xfffffffff0000000UL
30#define GET_ESID(x) (((x) >> SID_SHIFT) & SID_MASK)
31
32#define HPAGE_SHIFT 24
33#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT)
34#define HPAGE_MASK (~(HPAGE_SIZE - 1))
35
36#ifdef CONFIG_HUGETLB_PAGE
37
38#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
39
40#define HTLB_AREA_SHIFT 40
41#define HTLB_AREA_SIZE (1UL << HTLB_AREA_SHIFT)
42#define GET_HTLB_AREA(x) ((x) >> HTLB_AREA_SHIFT)
43
44#define LOW_ESID_MASK(addr, len) (((1U << (GET_ESID(addr+len-1)+1)) \
45 - (1U << GET_ESID(addr))) & 0xffff)
46#define HTLB_AREA_MASK(addr, len) (((1U << (GET_HTLB_AREA(addr+len-1)+1)) \
47 - (1U << GET_HTLB_AREA(addr))) & 0xffff)
48
49#define ARCH_HAS_HUGEPAGE_ONLY_RANGE
50#define ARCH_HAS_PREPARE_HUGEPAGE_RANGE
51#define ARCH_HAS_SETCLEAR_HUGE_PTE
52
53#define touches_hugepage_low_range(mm, addr, len) \
54 (LOW_ESID_MASK((addr), (len)) & (mm)->context.low_htlb_areas)
55#define touches_hugepage_high_range(mm, addr, len) \
56 (HTLB_AREA_MASK((addr), (len)) & (mm)->context.high_htlb_areas)
57
58#define __within_hugepage_low_range(addr, len, segmask) \
59 ((LOW_ESID_MASK((addr), (len)) | (segmask)) == (segmask))
60#define within_hugepage_low_range(addr, len) \
61 __within_hugepage_low_range((addr), (len), \
62 current->mm->context.low_htlb_areas)
63#define __within_hugepage_high_range(addr, len, zonemask) \
64 ((HTLB_AREA_MASK((addr), (len)) | (zonemask)) == (zonemask))
65#define within_hugepage_high_range(addr, len) \
66 __within_hugepage_high_range((addr), (len), \
67 current->mm->context.high_htlb_areas)
68
69#define is_hugepage_only_range(mm, addr, len) \
70 (touches_hugepage_high_range((mm), (addr), (len)) || \
71 touches_hugepage_low_range((mm), (addr), (len)))
72#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
73
74#define in_hugepage_area(context, addr) \
75 (cpu_has_feature(CPU_FTR_16M_PAGE) && \
76 ( ((1 << GET_HTLB_AREA(addr)) & (context).high_htlb_areas) || \
77 ( ((addr) < 0x100000000L) && \
78 ((1 << GET_ESID(addr)) & (context).low_htlb_areas) ) ) )
79
80#else /* !CONFIG_HUGETLB_PAGE */
81
82#define in_hugepage_area(mm, addr) 0
83
84#endif /* !CONFIG_HUGETLB_PAGE */
85
86/* align addr on a size boundary - adjust address up/down if needed */
87#define _ALIGN_UP(addr,size) (((addr)+((size)-1))&(~((size)-1)))
88#define _ALIGN_DOWN(addr,size) ((addr)&(~((size)-1)))
89
90/* align addr on a size boundary - adjust address up if needed */
91#define _ALIGN(addr,size) _ALIGN_UP(addr,size)
92
93/* to align the pointer to the (next) page boundary */
94#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE)
95
96#ifdef __KERNEL__
97#ifndef __ASSEMBLY__
98#include <asm/cache.h>
99
100#undef STRICT_MM_TYPECHECKS
101
102#define REGION_SIZE 4UL
103#define REGION_SHIFT 60UL
104#define REGION_MASK (((1UL<<REGION_SIZE)-1UL)<<REGION_SHIFT)
105
106static __inline__ void clear_page(void *addr)
107{
108 unsigned long lines, line_size;
109
110 line_size = ppc64_caches.dline_size;
111 lines = ppc64_caches.dlines_per_page;
112
113 __asm__ __volatile__(
114 "mtctr %1 # clear_page\n\
1151: dcbz 0,%0\n\
116 add %0,%0,%3\n\
117 bdnz+ 1b"
118 : "=r" (addr)
119 : "r" (lines), "0" (addr), "r" (line_size)
120 : "ctr", "memory");
121}
122
123extern void copy_page(void *to, void *from);
124struct page;
125extern void clear_user_page(void *page, unsigned long vaddr, struct page *pg);
126extern void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *p);
127
128#ifdef STRICT_MM_TYPECHECKS
129/*
130 * These are used to make use of C type-checking.
131 * Entries in the pte table are 64b, while entries in the pgd & pmd are 32b.
132 */
133typedef struct { unsigned long pte; } pte_t;
134typedef struct { unsigned long pmd; } pmd_t;
135typedef struct { unsigned long pud; } pud_t;
136typedef struct { unsigned long pgd; } pgd_t;
137typedef struct { unsigned long pgprot; } pgprot_t;
138
139#define pte_val(x) ((x).pte)
140#define pmd_val(x) ((x).pmd)
141#define pud_val(x) ((x).pud)
142#define pgd_val(x) ((x).pgd)
143#define pgprot_val(x) ((x).pgprot)
144
145#define __pte(x) ((pte_t) { (x) })
146#define __pmd(x) ((pmd_t) { (x) })
147#define __pud(x) ((pud_t) { (x) })
148#define __pgd(x) ((pgd_t) { (x) })
149#define __pgprot(x) ((pgprot_t) { (x) })
150
151#else
152/*
153 * .. while these make it easier on the compiler
154 */
155typedef unsigned long pte_t;
156typedef unsigned long pmd_t;
157typedef unsigned long pud_t;
158typedef unsigned long pgd_t;
159typedef unsigned long pgprot_t;
160
161#define pte_val(x) (x)
162#define pmd_val(x) (x)
163#define pud_val(x) (x)
164#define pgd_val(x) (x)
165#define pgprot_val(x) (x)
166
167#define __pte(x) (x)
168#define __pmd(x) (x)
169#define __pud(x) (x)
170#define __pgd(x) (x)
171#define __pgprot(x) (x)
172
173#endif
174
175#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
176
177extern int page_is_ram(unsigned long pfn);
178
179extern u64 ppc64_pft_size; /* Log 2 of page table size */
180
181/* We do define AT_SYSINFO_EHDR but don't use the gate mecanism */
182#define __HAVE_ARCH_GATE_AREA 1
183
184#endif /* __ASSEMBLY__ */
185
186#ifdef MODULE
187#define __page_aligned __attribute__((__aligned__(PAGE_SIZE)))
188#else
189#define __page_aligned \
190 __attribute__((__aligned__(PAGE_SIZE), \
191 __section__(".data.page_aligned")))
192#endif
193
194
195/* This must match the -Ttext linker address */
196/* Note: tophys & tovirt make assumptions about how */
197/* KERNELBASE is defined for performance reasons. */
198/* When KERNELBASE moves, those macros may have */
199/* to change! */
200#define PAGE_OFFSET ASM_CONST(0xC000000000000000)
201#define KERNELBASE PAGE_OFFSET
202#define VMALLOCBASE ASM_CONST(0xD000000000000000)
203
204#define VMALLOC_REGION_ID (VMALLOCBASE >> REGION_SHIFT)
205#define KERNEL_REGION_ID (KERNELBASE >> REGION_SHIFT)
206#define USER_REGION_ID (0UL)
207#define REGION_ID(ea) (((unsigned long)(ea)) >> REGION_SHIFT)
208
209#define __va(x) ((void *)((unsigned long)(x) + KERNELBASE))
210
211#ifdef CONFIG_DISCONTIGMEM
212#define page_to_pfn(page) discontigmem_page_to_pfn(page)
213#define pfn_to_page(pfn) discontigmem_pfn_to_page(pfn)
214#define pfn_valid(pfn) discontigmem_pfn_valid(pfn)
215#endif
216#ifdef CONFIG_FLATMEM
217#define pfn_to_page(pfn) (mem_map + (pfn))
218#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
219#define pfn_valid(pfn) ((pfn) < max_mapnr)
220#endif
221
222#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
223#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
224
225#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
226
227/*
228 * Unfortunately the PLT is in the BSS in the PPC32 ELF ABI,
229 * and needs to be executable. This means the whole heap ends
230 * up being executable.
231 */
232#define VM_DATA_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \
233 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
234
235#define VM_DATA_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
236 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
237
238#define VM_DATA_DEFAULT_FLAGS \
239 (test_thread_flag(TIF_32BIT) ? \
240 VM_DATA_DEFAULT_FLAGS32 : VM_DATA_DEFAULT_FLAGS64)
241
242/*
243 * This is the default if a program doesn't have a PT_GNU_STACK
244 * program header entry. The PPC64 ELF ABI has a non executable stack
245 * stack by default, so in the absense of a PT_GNU_STACK program header
246 * we turn execute permission off.
247 */
248#define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \
249 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
250
251#define VM_STACK_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
252 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
253
254#define VM_STACK_DEFAULT_FLAGS \
255 (test_thread_flag(TIF_32BIT) ? \
256 VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64)
257
258#endif /* __KERNEL__ */
259
260#include <asm-generic/page.h>
261
262#endif /* _PPC64_PAGE_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-28 00:49:44 -0500