Go to the documentation of this file. 1 #ifndef _ASM_IA64_PAGE_H
2 #define _ASM_IA64_PAGE_H
10 #include <asm/intrinsics.h>
11 #include <asm/types.h>
17 #define RGN_SHIFT (61)
18 #define RGN_BASE(r) (__IA64_UL_CONST(r)<<RGN_SHIFT)
19 #define RGN_BITS (RGN_BASE(-1))
22 #define RGN_UNCACHED 6
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
38 # error Unsupported page size!
41 #define PAGE_SIZE (__IA64_UL_CONST(1) << PAGE_SHIFT)
42 #define PAGE_MASK (~(PAGE_SIZE - 1))
44 #define PERCPU_PAGE_SHIFT 18
45 #define PERCPU_PAGE_SIZE (__IA64_UL_CONST(1) << PERCPU_PAGE_SHIFT)
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
52 # define HPAGE_SIZE (__IA64_UL_CONST(1) << HPAGE_SHIFT)
53 # define HPAGE_MASK (~(HPAGE_SIZE - 1))
55 # define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
59 # define __pa(x) ((x) - PAGE_OFFSET)
60 # define __va(x) ((x) + PAGE_OFFSET)
62 # define STRICT_MM_TYPECHECKS
71 #define clear_user_page(addr, vaddr, page) \
74 flush_dcache_page(page); \
77 #define copy_user_page(to, from, vaddr, page) \
79 copy_page((to), (from)); \
80 flush_dcache_page(page); \
84 #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
86 struct page *page = alloc_page_vma( \
87 GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr); \
89 flush_dcache_page(page); \
93 #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
95 #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
97 #ifdef CONFIG_VIRTUAL_MEM_MAP
100 # define ia64_pfn_valid(pfn) 1
103 #ifdef CONFIG_VIRTUAL_MEM_MAP
104 extern 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))
115 #ifdef CONFIG_FLATMEM
116 # define pfn_valid(pfn) (((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
117 #elif defined(CONFIG_DISCONTIGMEM)
120 # define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))
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)
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;})
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;})
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)
158 long double d = size - 1;
170 #ifdef STRICT_MM_TYPECHECKS
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;
179 typedef struct {
unsigned long pgd; }
pgd_t;
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)
188 # define pgd_val(x) ((x).pgd)
189 # define pgprot_val(x) ((x).pgprot)
191 # define __pte(x) ((pte_t) { (x) } )
192 # define __pmd(x) ((pmd_t) { (x) } )
193 # define __pgprot(x) ((pgprot_t) { (x) } )
199 # ifndef __ASSEMBLY__
200 typedef unsigned long pte_t;
201 typedef unsigned long pmd_t;
202 typedef unsigned long pgd_t;
207 # define pte_val(x) (x)
208 # define pmd_val(x) (x)
209 # define pgd_val(x) (x)
210 # define pgprot_val(x) (x)
212 # define __pte(x) (x)
213 # define __pgd(x) (x)
214 # define __pgprot(x) (x)
217 #define PAGE_OFFSET RGN_BASE(RGN_KERNEL)
219 #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
220 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | \
221 (((current->personality & READ_IMPLIES_EXEC) != 0) \
224 #define GATE_ADDR RGN_BASE(RGN_GATE)
230 #define KERNEL_START (GATE_ADDR+__IA64_UL_CONST(0x100000000))
231 #define PERCPU_ADDR (-PERCPU_PAGE_SIZE)
232 #define LOAD_OFFSET (KERNEL_START - KERNEL_TR_PAGE_SIZE)