diff options
Diffstat (limited to 'include/asm-m68k/tlbflush.h')
| -rw-r--r-- | include/asm-m68k/tlbflush.h | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/include/asm-m68k/tlbflush.h b/include/asm-m68k/tlbflush.h deleted file mode 100644 index acb6bf21a321..000000000000 --- a/include/asm-m68k/tlbflush.h +++ /dev/null @@ -1,219 +0,0 @@ -#ifndef _M68K_TLBFLUSH_H -#define _M68K_TLBFLUSH_H - - -#ifndef CONFIG_SUN3 - -#include <asm/current.h> - -static inline void flush_tlb_kernel_page(void *addr) -{ - if (CPU_IS_040_OR_060) { - mm_segment_t old_fs = get_fs(); - set_fs(KERNEL_DS); - __asm__ __volatile__(".chip 68040\n\t" - "pflush (%0)\n\t" - ".chip 68k" - : : "a" (addr)); - set_fs(old_fs); - } else if (CPU_IS_020_OR_030) - __asm__ __volatile__("pflush #4,#4,(%0)" : : "a" (addr)); -} - -/* - * flush all user-space atc entries. - */ -static inline void __flush_tlb(void) -{ - if (CPU_IS_040_OR_060) - __asm__ __volatile__(".chip 68040\n\t" - "pflushan\n\t" - ".chip 68k"); - else if (CPU_IS_020_OR_030) - __asm__ __volatile__("pflush #0,#4"); -} - -static inline void __flush_tlb040_one(unsigned long addr) -{ - __asm__ __volatile__(".chip 68040\n\t" - "pflush (%0)\n\t" - ".chip 68k" - : : "a" (addr)); -} - -static inline void __flush_tlb_one(unsigned long addr) -{ - if (CPU_IS_040_OR_060) - __flush_tlb040_one(addr); - else if (CPU_IS_020_OR_030) - __asm__ __volatile__("pflush #0,#4,(%0)" : : "a" (addr)); -} - -#define flush_tlb() __flush_tlb() - -/* - * flush all atc entries (both kernel and user-space entries). - */ -static inline void flush_tlb_all(void) -{ - if (CPU_IS_040_OR_060) - __asm__ __volatile__(".chip 68040\n\t" - "pflusha\n\t" - ".chip 68k"); - else if (CPU_IS_020_OR_030) - __asm__ __volatile__("pflusha"); -} - -static inline void flush_tlb_mm(struct mm_struct *mm) -{ - if (mm == current->active_mm) - __flush_tlb(); -} - -static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr) -{ - if (vma->vm_mm == current->active_mm) { - mm_segment_t old_fs = get_fs(); - set_fs(USER_DS); - __flush_tlb_one(addr); - set_fs(old_fs); - } -} - -static inline void flush_tlb_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) -{ - if (vma->vm_mm == current->active_mm) - __flush_tlb(); -} - -static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end) -{ - flush_tlb_all(); -} - -#else - - -/* Reserved PMEGs. */ -extern char sun3_reserved_pmeg[SUN3_PMEGS_NUM]; -extern unsigned long pmeg_vaddr[SUN3_PMEGS_NUM]; -extern unsigned char pmeg_alloc[SUN3_PMEGS_NUM]; -extern unsigned char pmeg_ctx[SUN3_PMEGS_NUM]; - -/* Flush all userspace mappings one by one... (why no flush command, - sun?) */ -static inline void flush_tlb_all(void) -{ - unsigned long addr; - unsigned char ctx, oldctx; - - oldctx = sun3_get_context(); - for(addr = 0x00000000; addr < TASK_SIZE; addr += SUN3_PMEG_SIZE) { - for(ctx = 0; ctx < 8; ctx++) { - sun3_put_context(ctx); - sun3_put_segmap(addr, SUN3_INVALID_PMEG); - } - } - - sun3_put_context(oldctx); - /* erase all of the userspace pmeg maps, we've clobbered them - all anyway */ - for(addr = 0; addr < SUN3_INVALID_PMEG; addr++) { - if(pmeg_alloc[addr] == 1) { - pmeg_alloc[addr] = 0; - pmeg_ctx[addr] = 0; - pmeg_vaddr[addr] = 0; - } - } - -} - -/* Clear user TLB entries within the context named in mm */ -static inline void flush_tlb_mm (struct mm_struct *mm) -{ - unsigned char oldctx; - unsigned char seg; - unsigned long i; - - oldctx = sun3_get_context(); - sun3_put_context(mm->context); - - for(i = 0; i < TASK_SIZE; i += SUN3_PMEG_SIZE) { - seg = sun3_get_segmap(i); - if(seg == SUN3_INVALID_PMEG) - continue; - - sun3_put_segmap(i, SUN3_INVALID_PMEG); - pmeg_alloc[seg] = 0; - pmeg_ctx[seg] = 0; - pmeg_vaddr[seg] = 0; - } - - sun3_put_context(oldctx); - -} - -/* Flush a single TLB page. In this case, we're limited to flushing a - single PMEG */ -static inline void flush_tlb_page (struct vm_area_struct *vma, - unsigned long addr) -{ - unsigned char oldctx; - unsigned char i; - - oldctx = sun3_get_context(); - sun3_put_context(vma->vm_mm->context); - addr &= ~SUN3_PMEG_MASK; - if((i = sun3_get_segmap(addr)) != SUN3_INVALID_PMEG) - { - pmeg_alloc[i] = 0; - pmeg_ctx[i] = 0; - pmeg_vaddr[i] = 0; - sun3_put_segmap (addr, SUN3_INVALID_PMEG); - } - sun3_put_context(oldctx); - -} -/* Flush a range of pages from TLB. */ - -static inline void flush_tlb_range (struct vm_area_struct *vma, - unsigned long start, unsigned long end) -{ - struct mm_struct *mm = vma->vm_mm; - unsigned char seg, oldctx; - - start &= ~SUN3_PMEG_MASK; - - oldctx = sun3_get_context(); - sun3_put_context(mm->context); - - while(start < end) - { - if((seg = sun3_get_segmap(start)) == SUN3_INVALID_PMEG) - goto next; - if(pmeg_ctx[seg] == mm->context) { - pmeg_alloc[seg] = 0; - pmeg_ctx[seg] = 0; - pmeg_vaddr[seg] = 0; - } - sun3_put_segmap(start, SUN3_INVALID_PMEG); - next: - start += SUN3_PMEG_SIZE; - } -} - -static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end) -{ - flush_tlb_all(); -} - -/* Flush kernel page from TLB. */ -static inline void flush_tlb_kernel_page (unsigned long addr) -{ - sun3_put_segmap (addr & ~(SUN3_PMEG_SIZE - 1), SUN3_INVALID_PMEG); -} - -#endif - -#endif /* _M68K_TLBFLUSH_H */ |
