diff options
| author | Roman Zippel <zippel@linux-m68k.org> | 2007-05-31 00:40:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-31 07:58:14 -0700 |
| commit | 12d810c1b8c2b913d48e629e2b5c01d105029839 (patch) | |
| tree | b39162d3168f6173af3d0e5790e16eb45a70dfaf /include/asm-m68k/page.h | |
| parent | 00c541eae7a477e3d1adb1ebf27cccc0bdb5f824 (diff) | |
m68k: discontinuous memory support
Fix support for discontinuous memory
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-m68k/page.h')
| -rw-r--r-- | include/asm-m68k/page.h | 52 |
1 files changed, 41 insertions, 11 deletions
diff --git a/include/asm-m68k/page.h b/include/asm-m68k/page.h index 7650b99dcae6..9e6d0d6debdb 100644 --- a/include/asm-m68k/page.h +++ b/include/asm-m68k/page.h @@ -121,7 +121,6 @@ extern unsigned long m68k_memoffset; #ifndef CONFIG_SUN3 #define WANT_PAGE_VIRTUAL -#ifdef CONFIG_SINGLE_MEMORY_CHUNK static inline unsigned long ___pa(void *vaddr) { @@ -133,7 +132,7 @@ static inline unsigned long ___pa(void *vaddr) : "0" (vaddr), "i" (m68k_fixup_memoffset)); return paddr; } -#define __pa(vaddr) ___pa((void *)(vaddr)) +#define __pa(vaddr) ___pa((void *)(vaddr)) static inline void *__va(unsigned long paddr) { void *vaddr; @@ -145,11 +144,6 @@ static inline void *__va(unsigned long paddr) return vaddr; } -#else -#define __pa(vaddr) virt_to_phys((void *)(vaddr)) -#define __va(paddr) phys_to_virt((unsigned long)(paddr)) -#endif - #else /* !CONFIG_SUN3 */ /* This #define is a horrible hack to suppress lots of warnings. --m */ #define __pa(x) ___pa((unsigned long)(x)) @@ -184,11 +178,47 @@ static inline void *__va(unsigned long x) #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) -#define virt_to_page(kaddr) (mem_map + (((unsigned long)(kaddr)-PAGE_OFFSET) >> PAGE_SHIFT)) -#define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) +extern int m68k_virt_to_node_shift; + +#ifdef CONFIG_SINGLE_MEMORY_CHUNK +#define __virt_to_node(addr) (&pg_data_map[0]) +#else +extern struct pglist_data *pg_data_table[]; + +static inline __attribute_const__ int __virt_to_node_shift(void) +{ + int shift; + + asm ( + "1: moveq #0,%0\n" + m68k_fixup(%c1, 1b) + : "=d" (shift) + : "i" (m68k_fixup_vnode_shift)); + return shift; +} + +#define __virt_to_node(addr) (pg_data_table[(unsigned long)(addr) >> __virt_to_node_shift()]) +#endif -#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) -#define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) +#define virt_to_page(addr) ({ \ + pfn_to_page(virt_to_pfn(addr)); \ +}) +#define page_to_virt(page) ({ \ + pfn_to_virt(page_to_pfn(page)); \ +}) + +#define pfn_to_page(pfn) ({ \ + unsigned long __pfn = (pfn); \ + struct pglist_data *pgdat; \ + pgdat = __virt_to_node((unsigned long)pfn_to_virt(__pfn)); \ + pgdat->node_mem_map + (__pfn - pgdat->node_start_pfn); \ +}) +#define page_to_pfn(_page) ({ \ + struct page *__p = (_page); \ + struct pglist_data *pgdat; \ + pgdat = &pg_data_map[page_to_nid(__p)]; \ + ((__p) - pgdat->node_mem_map) + pgdat->node_start_pfn; \ +}) #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) #define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn)) |