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powerpc: Use new CPU feature bit to select 2.06 tlbie 

This removes MMU_FTR_TLBIE_206 as we can now use CPU_FTR_HVMODE_206.  It
also changes the logic to select which tlbie to use to be based on this
new CPU feature bit.

This also duplicates the ASM_FTR_IF/SET/CLR defines for CPU features
(copied from MMU features).

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Neuling 2011-04-06 18:23:29 +00:00 committed by Benjamin Herrenschmidt
parent 476eb49126
commit a32e252f7c
3 changed files with 18 additions and 13 deletions
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13
arch/powerpc/include/asm/feature-fixups.h
View File

@ -146,6 +146,19 @@ label##5: \
#ifndef __ASSEMBLY__
#define ASM_FTR_IF(section_if, section_else, msk, val) \
stringify_in_c(BEGIN_FTR_SECTION) \
section_if "; " \
stringify_in_c(FTR_SECTION_ELSE) \
section_else "; " \
stringify_in_c(ALT_FTR_SECTION_END((msk), (val)))
#define ASM_FTR_IFSET(section_if, section_else, msk) \
ASM_FTR_IF(section_if, section_else, (msk), (msk))
#define ASM_FTR_IFCLR(section_if, section_else, msk) \
ASM_FTR_IF(section_if, section_else, (msk), 0)
#define ASM_MMU_FTR_IF(section_if, section_else, msk, val) \
stringify_in_c(BEGIN_MMU_FTR_SECTION) \
section_if "; " \

8
arch/powerpc/include/asm/mmu.h
View File

@ -56,11 +56,6 @@
*/
#define MMU_FTR_NEED_DTLB_SW_LRU ASM_CONST(0x00200000)
/* This indicates that the processor uses the ISA 2.06 server tlbie
* mnemonics
*/
#define MMU_FTR_TLBIE_206 ASM_CONST(0x00400000)
/* Enable use of TLB reservation. Processor should support tlbsrx.
* instruction and MAS0[WQ].
*/
@ -105,8 +100,7 @@
#define MMU_FTRS_PPC970 MMU_FTRS_POWER4
#define MMU_FTRS_POWER5 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE
#define MMU_FTRS_POWER6 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE
#define MMU_FTRS_POWER7 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE | \
MMU_FTR_TLBIE_206
#define MMU_FTRS_POWER7 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE
#define MMU_FTRS_CELL MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \
MMU_FTR_CI_LARGE_PAGE
#define MMU_FTRS_PA6T MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \

10
arch/powerpc/mm/hash_native_64.c
View File

@ -50,9 +50,8 @@ static inline void __tlbie(unsigned long va, int psize, int ssize)
case MMU_PAGE_4K:
va &= ~0xffful;
va |= ssize << 8;
asm volatile(ASM_MMU_FTR_IFCLR("tlbie %0,0", PPC_TLBIE(%1,%0),
%2)
: : "r" (va), "r"(0), "i" (MMU_FTR_TLBIE_206)
asm volatile(ASM_FTR_IFCLR("tlbie %0,0", PPC_TLBIE(%1,%0), %2)
: : "r" (va), "r"(0), "i" (CPU_FTR_HVMODE_206)
: "memory");
break;
default:
@ -61,9 +60,8 @@ static inline void __tlbie(unsigned long va, int psize, int ssize)
va |= penc << 12;
va |= ssize << 8;
va |= 1; /* L */
asm volatile(ASM_MMU_FTR_IFCLR("tlbie %0,1", PPC_TLBIE(%1,%0),
%2)
: : "r" (va), "r"(0), "i" (MMU_FTR_TLBIE_206)
asm volatile(ASM_FTR_IFCLR("tlbie %0,1", PPC_TLBIE(%1,%0), %2)
: : "r" (va), "r"(0), "i" (CPU_FTR_HVMODE_206)
: "memory");
break;
}