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Merge branch 'orion-fixes2'
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Russell King authored and Russell King committed Apr 29, 2008
2 parents 92794a5 + 0ed1507 commit 9d87dd9
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Showing 5 changed files with 120 additions and 6 deletions.
5 changes: 4 additions & 1 deletion arch/arm/mm/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -372,7 +372,7 @@ config CPU_FEROCEON
select CPU_PABRT_NOIFAR
select CPU_CACHE_VIVT
select CPU_CP15_MMU
select CPU_COPY_V4WB if MMU
select CPU_COPY_FEROCEON if MMU
select CPU_TLB_V4WBI if MMU

config CPU_FEROCEON_OLD_ID
Expand Down Expand Up @@ -523,6 +523,9 @@ config CPU_COPY_V4WT
config CPU_COPY_V4WB
bool

config CPU_COPY_FEROCEON
bool

config CPU_COPY_V6
bool

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1 change: 1 addition & 0 deletions arch/arm/mm/Makefile
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Expand Up @@ -36,6 +36,7 @@ obj-$(CONFIG_CPU_CACHE_V7) += cache-v7.o
obj-$(CONFIG_CPU_COPY_V3) += copypage-v3.o
obj-$(CONFIG_CPU_COPY_V4WT) += copypage-v4wt.o
obj-$(CONFIG_CPU_COPY_V4WB) += copypage-v4wb.o
obj-$(CONFIG_CPU_COPY_FEROCEON) += copypage-feroceon.o
obj-$(CONFIG_CPU_COPY_V6) += copypage-v6.o context.o
obj-$(CONFIG_CPU_SA1100) += copypage-v4mc.o
obj-$(CONFIG_CPU_XSCALE) += copypage-xscale.o
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95 changes: 95 additions & 0 deletions arch/arm/mm/copypage-feroceon.S
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@@ -0,0 +1,95 @@
/*
* linux/arch/arm/lib/copypage-feroceon.S
*
* Copyright (C) 2008 Marvell Semiconductors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This handles copy_user_page and clear_user_page on Feroceon
* more optimally than the generic implementations.
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/asm-offsets.h>

.text
.align 5

ENTRY(feroceon_copy_user_page)
stmfd sp!, {r4-r9, lr}
mov ip, #PAGE_SZ
1: mov lr, r1
ldmia r1!, {r2 - r9}
pld [lr, #32]
pld [lr, #64]
pld [lr, #96]
pld [lr, #128]
pld [lr, #160]
pld [lr, #192]
pld [lr, #224]
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
subs ip, ip, #(32 * 8)
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
bne 1b
mcr p15, 0, ip, c7, c10, 4 @ drain WB
ldmfd sp!, {r4-r9, pc}

.align 5

ENTRY(feroceon_clear_user_page)
stmfd sp!, {r4-r7, lr}
mov r1, #PAGE_SZ/32
mov r2, #0
mov r3, #0
mov r4, #0
mov r5, #0
mov r6, #0
mov r7, #0
mov ip, #0
mov lr, #0
1: stmia r0, {r2-r7, ip, lr}
subs r1, r1, #1
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
bne 1b
mcr p15, 0, r1, c7, c10, 4 @ drain WB
ldmfd sp!, {r4-r7, pc}

__INITDATA

.type feroceon_user_fns, #object
ENTRY(feroceon_user_fns)
.long feroceon_clear_user_page
.long feroceon_copy_user_page
.size feroceon_user_fns, . - feroceon_user_fns
17 changes: 12 additions & 5 deletions arch/arm/mm/proc-feroceon.S
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Original file line number Diff line number Diff line change
Expand Up @@ -93,7 +93,7 @@ ENTRY(cpu_feroceon_reset)
*
* Called with IRQs disabled
*/
.align 10
.align 5
ENTRY(cpu_feroceon_do_idle)
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 @ Drain write buffer
Expand All @@ -106,6 +106,7 @@ ENTRY(cpu_feroceon_do_idle)
* Clean and invalidate all cache entries in a particular
* address space.
*/
.align 5
ENTRY(feroceon_flush_user_cache_all)
/* FALLTHROUGH */

Expand Down Expand Up @@ -135,6 +136,7 @@ __flush_whole_cache:
* - end - end address (exclusive)
* - flags - vm_flags describing address space
*/
.align 5
ENTRY(feroceon_flush_user_cache_range)
mov ip, #0
sub r3, r1, r0 @ calculate total size
Expand Down Expand Up @@ -163,6 +165,7 @@ ENTRY(feroceon_flush_user_cache_range)
* - start - virtual start address
* - end - virtual end address
*/
.align 5
ENTRY(feroceon_coherent_kern_range)
/* FALLTHROUGH */

Expand Down Expand Up @@ -194,6 +197,7 @@ ENTRY(feroceon_coherent_user_range)
*
* - addr - page aligned address
*/
.align 5
ENTRY(feroceon_flush_kern_dcache_page)
add r1, r0, #PAGE_SZ
1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry
Expand All @@ -218,6 +222,7 @@ ENTRY(feroceon_flush_kern_dcache_page)
*
* (same as v4wb)
*/
.align 5
ENTRY(feroceon_dma_inv_range)
tst r0, #CACHE_DLINESIZE - 1
mcrne p15, 0, r0, c7, c10, 1 @ clean D entry
Expand All @@ -241,6 +246,7 @@ ENTRY(feroceon_dma_inv_range)
*
* (same as v4wb)
*/
.align 5
ENTRY(feroceon_dma_clean_range)
bic r0, r0, #CACHE_DLINESIZE - 1
1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
Expand All @@ -258,10 +264,10 @@ ENTRY(feroceon_dma_clean_range)
* - start - virtual start address
* - end - virtual end address
*/
.align 5
ENTRY(feroceon_dma_flush_range)
bic r0, r0, #CACHE_DLINESIZE - 1
1:
mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry
1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry
add r0, r0, #CACHE_DLINESIZE
cmp r0, r1
blo 1b
Expand All @@ -279,6 +285,7 @@ ENTRY(feroceon_cache_fns)
.long feroceon_dma_clean_range
.long feroceon_dma_flush_range

.align 5
ENTRY(cpu_feroceon_dcache_clean_area)
1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
add r0, r0, #CACHE_DLINESIZE
Expand Down Expand Up @@ -433,7 +440,7 @@ __feroceon_old_id_proc_info:
.long cpu_feroceon_name
.long feroceon_processor_functions
.long v4wbi_tlb_fns
.long v4wb_user_fns
.long feroceon_user_fns
.long feroceon_cache_fns
.size __feroceon_old_id_proc_info, . - __feroceon_old_id_proc_info
#endif
Expand All @@ -459,6 +466,6 @@ __feroceon_proc_info:
.long cpu_feroceon_name
.long feroceon_processor_functions
.long v4wbi_tlb_fns
.long v4wb_user_fns
.long feroceon_user_fns
.long feroceon_cache_fns
.size __feroceon_proc_info, . - __feroceon_proc_info
8 changes: 8 additions & 0 deletions include/asm-arm/page.h
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,14 @@
# endif
#endif

#ifdef CONFIG_CPU_COPY_FEROCEON
# ifdef _USER
# define MULTI_USER 1
# else
# define _USER feroceon
# endif
#endif

#ifdef CONFIG_CPU_SA1100
# ifdef _USER
# define MULTI_USER 1
Expand Down

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