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powerpc/32: don't use CPU_FTR_COHERENT_ICACHE 

Only 601 and E200 have CPU_FTR_COHERENT_ICACHE.

Just use #ifdefs instead of feature fixup.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/5f3e92ccd64d06477b27626f6007a9da3b8da157.1566834712.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy 2019-08-26 15:52:19 +00:00 committed by Michael Ellerman
parent e0291f1dec
commit c7bf1252d5
1 changed files with 12 additions and 9 deletions
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21
arch/powerpc/kernel/misc_32.S
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@ -324,10 +324,10 @@ EXPORT_SYMBOL(flush_instruction_cache)
* flush_icache_range(unsigned long start, unsigned long stop)
*/
_GLOBAL(flush_icache_range)
BEGIN_FTR_SECTION
#if defined(CONFIG_PPC_BOOK3S_601) || defined(CONFIG_E200)
PURGE_PREFETCHED_INS
blr /* for 601, do nothing */
END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
blr /* for 601 and e200, do nothing */
#else
rlwinm r3,r3,0,0,31 - L1_CACHE_SHIFT
subf r4,r3,r4
addi r4,r4,L1_CACHE_BYTES - 1
@ -353,6 +353,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
sync /* additional sync needed on g4 */
isync
blr
#endif
_ASM_NOKPROBE_SYMBOL(flush_icache_range)
EXPORT_SYMBOL(flush_icache_range)
@ -360,15 +361,15 @@ EXPORT_SYMBOL(flush_icache_range)
* Flush a particular page from the data cache to RAM.
* Note: this is necessary because the instruction cache does *not*
* snoop from the data cache.
* This is a no-op on the 601 which has a unified cache.
* This is a no-op on the 601 and e200 which have a unified cache.
*
* void __flush_dcache_icache(void *page)
*/
_GLOBAL(__flush_dcache_icache)
BEGIN_FTR_SECTION
#if defined(CONFIG_PPC_BOOK3S_601) || defined(CONFIG_E200)
PURGE_PREFETCHED_INS
blr
END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
#else
rlwinm r3,r3,0,0,31-PAGE_SHIFT /* Get page base address */
li r4,PAGE_SIZE/L1_CACHE_BYTES /* Number of lines in a page */
mtctr r4
@ -396,6 +397,7 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_44x)
sync
isync
blr
#endif
#ifndef CONFIG_BOOKE
/*
@ -407,10 +409,10 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_44x)
* void __flush_dcache_icache_phys(unsigned long physaddr)
*/
_GLOBAL(__flush_dcache_icache_phys)
BEGIN_FTR_SECTION
#if defined(CONFIG_PPC_BOOK3S_601) || defined(CONFIG_E200)
PURGE_PREFETCHED_INS
blr /* for 601, do nothing */
END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
blr /* for 601 and e200, do nothing */
#else
mfmsr r10
rlwinm r0,r10,0,28,26 /* clear DR */
mtmsr r0
@ -431,6 +433,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
mtmsr r10 /* restore DR */
isync
blr
#endif
#endif /* CONFIG_BOOKE */
/*