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Diffstat (limited to 'arch/m68k/include/asm/tlbflush_mm.h')
-rw-r--r--arch/m68k/include/asm/tlbflush_mm.h219
1 files changed, 0 insertions, 219 deletions
diff --git a/arch/m68k/include/asm/tlbflush_mm.h b/arch/m68k/include/asm/tlbflush_mm.h
deleted file mode 100644
index acb6bf21a321..000000000000
--- 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 */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 02:28:04 +0000