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m68k: add TLB flush support for the ColdFire V4e MMU hardware

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The ColdFire V4e MMU is unlike any of the other m68k MMU hardware.
It needs its own TLB flush support code.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Matt Waddel <mwaddel@yahoo.com>
Acked-by: Kurt Mahan <kmahan@xmission.com>
This commit is contained in:
Greg Ungerer 2011-10-17 15:09:44 +10:00
parent 0b0b808b50
commit b852de4e7f
1 changed files with 17 additions and 6 deletions
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23
arch/m68k/include/asm/tlbflush.h
View file

@ -5,10 +5,13 @@
#ifndef CONFIG_SUN3
#include <asm/current.h>
#include <asm/mcfmmu.h>
static inline void flush_tlb_kernel_page(void *addr)
{
if (CPU_IS_040_OR_060) {
if (CPU_IS_COLDFIRE) {
mmu_write(MMUOR, MMUOR_CNL);
} else if (CPU_IS_040_OR_060) {
mm_segment_t old_fs = get_fs();
set_fs(KERNEL_DS);
__asm__ __volatile__(".chip 68040\n\t"
@ -25,12 +28,15 @@ static inline void flush_tlb_kernel_page(void *addr)
*/
static inline void __flush_tlb(void)
{
if (CPU_IS_040_OR_060)
if (CPU_IS_COLDFIRE) {
mmu_write(MMUOR, MMUOR_CNL);
} else if (CPU_IS_040_OR_060) {
__asm__ __volatile__(".chip 68040\n\t"
"pflushan\n\t"
".chip 68k");
else if (CPU_IS_020_OR_030)
} else if (CPU_IS_020_OR_030) {
__asm__ __volatile__("pflush #0,#4");
}
}
static inline void __flush_tlb040_one(unsigned long addr)
@ -43,7 +49,9 @@ static inline void __flush_tlb040_one(unsigned long addr)
static inline void __flush_tlb_one(unsigned long addr)
{
if (CPU_IS_040_OR_060)
if (CPU_IS_COLDFIRE)
mmu_write(MMUOR, MMUOR_CNL);
else 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));
@ -56,12 +64,15 @@ static inline void __flush_tlb_one(unsigned long addr)
*/
static inline void flush_tlb_all(void)
{
if (CPU_IS_040_OR_060)
if (CPU_IS_COLDFIRE) {
mmu_write(MMUOR, MMUOR_CNL);
} else if (CPU_IS_040_OR_060) {
__asm__ __volatile__(".chip 68040\n\t"
"pflusha\n\t"
".chip 68k");
else if (CPU_IS_020_OR_030)
} else if (CPU_IS_020_OR_030) {
__asm__ __volatile__("pflusha");
}
}
static inline void flush_tlb_mm(struct mm_struct *mm)