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yaml
---
r: 231805
b: refs/heads/master
c: b3d75b0
h: refs/heads/master
i:
  231803: 236b6a3
v: v3
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Philippe De Muyter authored and Greg Ungerer committed Jan 5, 2011
1 parent ebf0923 commit 8a2b33c
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Showing 3 changed files with 37 additions and 24 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 5291fa98565a2f4d27ec59380e8497eba2af948d
refs/heads/master: b3d75b09bf8998fd302ba339eebbc768a110741b
28 changes: 5 additions & 23 deletions trunk/arch/m68k/include/asm/cacheflush_no.h
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Expand Up @@ -5,6 +5,9 @@
* (C) Copyright 2000-2004, Greg Ungerer <gerg@snapgear.com>
*/
#include <linux/mm.h>
#if defined(CONFIG_M5407) || defined(CONFIG_M548x)
#include <asm/m54xxacr.h>
#endif

#define flush_cache_all() __flush_cache_all()
#define flush_cache_mm(mm) do { } while (0)
Expand All @@ -27,31 +30,9 @@
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)

#ifndef __flush_cache_all
static inline void __flush_cache_all(void)
{
#if defined(CONFIG_M5407) || defined(CONFIG_M548x)
/*
* Use cpushl to push and invalidate all cache lines.
* Gas doesn't seem to know how to generate the ColdFire
* cpushl instruction... Oh well, bit stuff it for now.
*/
__asm__ __volatile__ (
"nop\n\t"
"clrl %%d0\n\t"
"1:\n\t"
"movel %%d0,%%a0\n\t"
"2:\n\t"
".word 0xf468\n\t"
"addl #0x10,%%a0\n\t"
"cmpl #0x00000800,%%a0\n\t"
"blt 2b\n\t"
"addql #1,%%d0\n\t"
"cmpil #4,%%d0\n\t"
"bne 1b\n\t"
"movel #0xb6088500,%%d0\n\t"
"movec %%d0,%%CACR\n\t"
: : : "d0", "a0" );
#endif /* CONFIG_M5407 */
#if defined(CONFIG_M523x) || defined(CONFIG_M527x)
__asm__ __volatile__ (
"movel #0x81400100, %%d0\n\t"
Expand Down Expand Up @@ -88,5 +69,6 @@ static inline void __flush_cache_all(void)
: : : "d0" );
#endif /* CONFIG_M532x */
}
#endif /* __flush_cache_all */

#endif /* _M68KNOMMU_CACHEFLUSH_H */
31 changes: 31 additions & 0 deletions trunk/arch/m68k/include/asm/m54xxacr.h
Original file line number Diff line number Diff line change
Expand Up @@ -40,4 +40,35 @@
#define ACR_CM 0x00000060 /* Cache mode mask */
#define ACR_WPROTECT 0x00000004 /* Write protect */

#ifndef __ASSEMBLY__

static inline void __m54xx_flush_cache_all(void)
{
/*
* Use cpushl to push and invalidate all cache lines.
* Gas doesn't seem to know how to generate the ColdFire
* cpushl instruction... Oh well, bit stuff it for now.
*/
__asm__ __volatile__ (
"nop\n\t"
"clrl %%d0\n\t"
"1:\n\t"
"movel %%d0,%%a0\n\t"
"2:\n\t"
".word 0xf468\n\t"
"addl #0x10,%%a0\n\t"
"cmpl #0x00000800,%%a0\n\t"
"blt 2b\n\t"
"addql #1,%%d0\n\t"
"cmpil #4,%%d0\n\t"
"bne 1b\n\t"
"movel #0xb6088500,%%d0\n\t"
"movec %%d0,%%CACR\n\t"
: : : "d0", "a0" );
}

#define __flush_cache_all() __m54xx_flush_cache_all()

#endif /* __ASSEMBLY__ */

#endif /* m54xxacr_h */

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