diff options
author | Greg Ungerer <gerg@uclinux.org> | 2009-03-11 06:44:39 (GMT) |
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committer | Greg Ungerer <gerg@uclinux.org> | 2009-03-24 05:17:45 (GMT) |
commit | da4f4a02abebb8b6f49e1585acbb23921a5da410 (patch) | |
tree | d144b3967f2f36d93f49d0d4bf423514e30ad350 /arch/m68k/include | |
parent | facdf0ed4f594485fb2a1d2d024a150924c6b01c (diff) | |
download | linux-fsl-qoriq-da4f4a02abebb8b6f49e1585acbb23921a5da410.tar.xz |
m68k: merge the mmu and non-mmu versions of tlbflush.h
Simple merge of the mmu and non-mmu versions of tlbflush.h
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'arch/m68k/include')
-rw-r--r-- | arch/m68k/include/asm/tlbflush.h | 268 | ||||
-rw-r--r-- | arch/m68k/include/asm/tlbflush_mm.h | 219 | ||||
-rw-r--r-- | arch/m68k/include/asm/tlbflush_no.h | 55 |
3 files changed, 265 insertions, 277 deletions
diff --git a/arch/m68k/include/asm/tlbflush.h b/arch/m68k/include/asm/tlbflush.h index b6f93b3..a6b4ed4 100644 --- a/arch/m68k/include/asm/tlbflush.h +++ b/arch/m68k/include/asm/tlbflush.h @@ -1,5 +1,267 @@ -#ifdef __uClinux__ -#include "tlbflush_no.h" +#ifndef _M68K_TLBFLUSH_H +#define _M68K_TLBFLUSH_H + +#ifdef CONFIG_MMU +#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 -#include "tlbflush_mm.h" + + +/* 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 + +#else /* !CONFIG_MMU */ + +/* + * flush all user-space atc entries. + */ +static inline void __flush_tlb(void) +{ + BUG(); +} + +static inline void __flush_tlb_one(unsigned long addr) +{ + BUG(); +} + +#define flush_tlb() __flush_tlb() + +/* + * flush all atc entries (both kernel and user-space entries). + */ +static inline void flush_tlb_all(void) +{ + BUG(); +} + +static inline void flush_tlb_mm(struct mm_struct *mm) +{ + BUG(); +} + +static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr) +{ + BUG(); +} + +static inline void flush_tlb_range(struct mm_struct *mm, + unsigned long start, unsigned long end) +{ + BUG(); +} + +static inline void flush_tlb_kernel_page(unsigned long addr) +{ + BUG(); +} + +#endif /* CONFIG_MMU */ + +#endif /* _M68K_TLBFLUSH_H */ diff --git a/arch/m68k/include/asm/tlbflush_mm.h b/arch/m68k/include/asm/tlbflush_mm.h deleted file mode 100644 index acb6bf2..0000000 --- a/arch/m68k/include/asm/tlbflush_mm.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 */ diff --git a/arch/m68k/include/asm/tlbflush_no.h b/arch/m68k/include/asm/tlbflush_no.h deleted file mode 100644 index a470cfb..0000000 --- a/arch/m68k/include/asm/tlbflush_no.h +++ /dev/null @@ -1,55 +0,0 @@ -#ifndef _M68KNOMMU_TLBFLUSH_H -#define _M68KNOMMU_TLBFLUSH_H - -/* - * Copyright (C) 2000 Lineo, David McCullough <davidm@uclinux.org> - * Copyright (C) 2000-2002, Greg Ungerer <gerg@snapgear.com> - */ - -#include <asm/setup.h> - -/* - * flush all user-space atc entries. - */ -static inline void __flush_tlb(void) -{ - BUG(); -} - -static inline void __flush_tlb_one(unsigned long addr) -{ - BUG(); -} - -#define flush_tlb() __flush_tlb() - -/* - * flush all atc entries (both kernel and user-space entries). - */ -static inline void flush_tlb_all(void) -{ - BUG(); -} - -static inline void flush_tlb_mm(struct mm_struct *mm) -{ - BUG(); -} - -static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr) -{ - BUG(); -} - -static inline void flush_tlb_range(struct mm_struct *mm, - unsigned long start, unsigned long end) -{ - BUG(); -} - -static inline void flush_tlb_kernel_page(unsigned long addr) -{ - BUG(); -} - -#endif /* _M68KNOMMU_TLBFLUSH_H */ |