| |
| #ifndef M68K_PGALLOC_H |
| #define M68K_PGALLOC_H |
| |
| #include <linux/config.h> |
| #include <asm/setup.h> |
| #include <asm/virtconvert.h> |
| |
| /* |
| * Cache handling functions |
| */ |
| |
| #define flush_icache() \ |
| ({ \ |
| if (CPU_IS_040_OR_060) \ |
| __asm__ __volatile__("nop\n\t" \ |
| ".chip 68040\n\t" \ |
| "cinva %%ic\n\t" \ |
| ".chip 68k" : ); \ |
| else { \ |
| unsigned long _tmp; \ |
| __asm__ __volatile__("movec %%cacr,%0\n\t" \ |
| "orw %1,%0\n\t" \ |
| "movec %0,%%cacr" \ |
| : "=&d" (_tmp) \ |
| : "id" (FLUSH_I)); \ |
| } \ |
| }) |
| |
| /* |
| * invalidate the cache for the specified memory range. |
| * It starts at the physical address specified for |
| * the given number of bytes. |
| */ |
| extern void cache_clear(unsigned long paddr, int len); |
| /* |
| * push any dirty cache in the specified memory range. |
| * It starts at the physical address specified for |
| * the given number of bytes. |
| */ |
| extern void cache_push(unsigned long paddr, int len); |
| |
| /* |
| * push and invalidate pages in the specified user virtual |
| * memory range. |
| */ |
| extern void cache_push_v(unsigned long vaddr, int len); |
| |
| /* cache code */ |
| #define FLUSH_I_AND_D (0x00000808) |
| #define FLUSH_I (0x00000008) |
| |
| /* This is needed whenever the virtual mapping of the current |
| process changes. */ |
| #define __flush_cache_all() \ |
| ({ \ |
| if (CPU_IS_040_OR_060) \ |
| __asm__ __volatile__("nop\n\t" \ |
| ".chip 68040\n\t" \ |
| "cpusha %dc\n\t" \ |
| ".chip 68k"); \ |
| else { \ |
| unsigned long _tmp; \ |
| __asm__ __volatile__("movec %%cacr,%0\n\t" \ |
| "orw %1,%0\n\t" \ |
| "movec %0,%%cacr" \ |
| : "=&d" (_tmp) \ |
| : "di" (FLUSH_I_AND_D)); \ |
| } \ |
| }) |
| |
| #define __flush_cache_030() \ |
| ({ \ |
| if (CPU_IS_020_OR_030) { \ |
| unsigned long _tmp; \ |
| __asm__ __volatile__("movec %%cacr,%0\n\t" \ |
| "orw %1,%0\n\t" \ |
| "movec %0,%%cacr" \ |
| : "=&d" (_tmp) \ |
| : "di" (FLUSH_I_AND_D)); \ |
| } \ |
| }) |
| |
| #define flush_cache_all() __flush_cache_all() |
| |
| extern inline void flush_cache_mm(struct mm_struct *mm) |
| { |
| if (mm == current->mm) |
| __flush_cache_030(); |
| } |
| |
| extern inline void flush_cache_range(struct vm_area_struct *vma, |
| unsigned long start, |
| unsigned long end) |
| { |
| if (vma->vm_mm == current->mm) |
| __flush_cache_030(); |
| } |
| |
| extern inline void flush_cache_page(struct vm_area_struct *vma, |
| unsigned long vmaddr) |
| { |
| if (vma->vm_mm == current->mm) |
| __flush_cache_030(); |
| } |
| |
| /* Push the page at kernel virtual address and clear the icache */ |
| /* RZ: use cpush %bc instead of cpush %dc, cinv %ic */ |
| #define flush_page_to_ram(page) __flush_page_to_ram((unsigned long) page_address(page)) |
| extern inline void __flush_page_to_ram(unsigned long address) |
| { |
| if (CPU_IS_040_OR_060) { |
| __asm__ __volatile__("nop\n\t" |
| ".chip 68040\n\t" |
| "cpushp %%bc,(%0)\n\t" |
| ".chip 68k" |
| : : "a" (__pa((void *)address))); |
| } else { |
| unsigned long _tmp; |
| __asm__ __volatile__("movec %%cacr,%0\n\t" |
| "orw %1,%0\n\t" |
| "movec %0,%%cacr" |
| : "=&d" (_tmp) |
| : "di" (FLUSH_I)); |
| } |
| } |
| |
| #define flush_dcache_page(page) do { } while (0) |
| #define flush_icache_page(vma,pg) do { } while (0) |
| #define flush_icache_user_range(vma,pg,adr,len) do { } while (0) |
| |
| /* Push n pages at kernel virtual address and clear the icache */ |
| /* RZ: use cpush %bc instead of cpush %dc, cinv %ic */ |
| extern inline void flush_icache_range (unsigned long address, |
| unsigned long endaddr) |
| { |
| if (CPU_IS_040_OR_060) { |
| short n = (endaddr - address + PAGE_SIZE - 1) / PAGE_SIZE; |
| |
| while (--n >= 0) { |
| __asm__ __volatile__("nop\n\t" |
| ".chip 68040\n\t" |
| "cpushp %%bc,(%0)\n\t" |
| ".chip 68k" |
| : : "a" (virt_to_phys((void *)address))); |
| address += PAGE_SIZE; |
| } |
| } else { |
| unsigned long tmp; |
| __asm__ __volatile__("movec %%cacr,%0\n\t" |
| "orw %1,%0\n\t" |
| "movec %0,%%cacr" |
| : "=&d" (tmp) |
| : "di" (FLUSH_I)); |
| } |
| } |
| |
| |
| |
| |
| #ifdef CONFIG_SUN3 |
| #include <asm/sun3_pgalloc.h> |
| #else |
| #include <asm/motorola_pgalloc.h> |
| #endif |
| |
| #endif /* M68K_PGALLOC_H */ |