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kernel_optimize_test/arch/powerpc/kernel/swsusp_32.S

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#include <linux/threads.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/cputable.h>
#include <asm/thread_info.h>
#include <asm/ppc_asm.h>
kbuild: m68k,parisc,ppc,ppc64,s390,xtensa use generic asm-offsets.h support Delete obsoleted parts form arch makefiles and rename to asm-offsets.h Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-09-10 02:57:26 +08:00
#include <asm/asm-offsets.h>
powerpc/mm: Introduce MMU features We're soon running out of CPU features and I need to add some new ones for various MMU related bits, so this patch separates the MMU features from the CPU features. I moved over the 32-bit MMU related ones, added base features for MMU type families, but didn't move over any 64-bit only feature yet. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-19 03:13:32 +08:00
#include <asm/mmu.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Structure for storing CPU registers on the save area.
*/
#define SL_SP 0
#define SL_PC 4
#define SL_MSR 8
#define SL_SDR1 0xc
#define SL_SPRG0 0x10 /* 4 sprg's */
#define SL_DBAT0 0x20
#define SL_IBAT0 0x28
#define SL_DBAT1 0x30
#define SL_IBAT1 0x38
#define SL_DBAT2 0x40
#define SL_IBAT2 0x48
#define SL_DBAT3 0x50
#define SL_IBAT3 0x58
#define SL_TB 0x60
#define SL_R2 0x68
#define SL_CR 0x6c
#define SL_LR 0x70
#define SL_R12 0x74 /* r12 to r31 */
#define SL_SIZE (SL_R12 + 80)
.section .data
.align 5
_GLOBAL(swsusp_save_area)
.space SL_SIZE
.section .text
.align 5
_GLOBAL(swsusp_arch_suspend)
lis r11,swsusp_save_area@h
ori r11,r11,swsusp_save_area@l
mflr r0
stw r0,SL_LR(r11)
mfcr r0
stw r0,SL_CR(r11)
stw r1,SL_SP(r11)
stw r2,SL_R2(r11)
stmw r12,SL_R12(r11)
/* Save MSR & SDR1 */
mfmsr r4
stw r4,SL_MSR(r11)
mfsdr1 r4
stw r4,SL_SDR1(r11)
/* Get a stable timebase and save it */
1: mftbu r4
stw r4,SL_TB(r11)
mftb r5
stw r5,SL_TB+4(r11)
mftbu r3
cmpw r3,r4
bne 1b
/* Save SPRGs */
mfsprg r4,0
stw r4,SL_SPRG0(r11)
mfsprg r4,1
stw r4,SL_SPRG0+4(r11)
mfsprg r4,2
stw r4,SL_SPRG0+8(r11)
mfsprg r4,3
stw r4,SL_SPRG0+12(r11)
/* Save BATs */
mfdbatu r4,0
stw r4,SL_DBAT0(r11)
mfdbatl r4,0
stw r4,SL_DBAT0+4(r11)
mfdbatu r4,1
stw r4,SL_DBAT1(r11)
mfdbatl r4,1
stw r4,SL_DBAT1+4(r11)
mfdbatu r4,2
stw r4,SL_DBAT2(r11)
mfdbatl r4,2
stw r4,SL_DBAT2+4(r11)
mfdbatu r4,3
stw r4,SL_DBAT3(r11)
mfdbatl r4,3
stw r4,SL_DBAT3+4(r11)
mfibatu r4,0
stw r4,SL_IBAT0(r11)
mfibatl r4,0
stw r4,SL_IBAT0+4(r11)
mfibatu r4,1
stw r4,SL_IBAT1(r11)
mfibatl r4,1
stw r4,SL_IBAT1+4(r11)
mfibatu r4,2
stw r4,SL_IBAT2(r11)
mfibatl r4,2
stw r4,SL_IBAT2+4(r11)
mfibatu r4,3
stw r4,SL_IBAT3(r11)
mfibatl r4,3
stw r4,SL_IBAT3+4(r11)
#if 0
/* Backup various CPU config stuffs */
bl __save_cpu_setup
#endif
/* Call the low level suspend stuff (we should probably have made
* a stackframe...
*/
bl swsusp_save
/* Restore LR from the save area */
lis r11,swsusp_save_area@h
ori r11,r11,swsusp_save_area@l
lwz r0,SL_LR(r11)
mtlr r0
blr
/* Resume code */
_GLOBAL(swsusp_arch_resume)
[POWERPC] Make altivec code in swsusp_32.S depend on CONFIG_ALTIVEC This makes the altivec code in swsusp_32.S depend on CONFIG_ALTIVEC to avoid build failures for systems that don't have altivec. I'm not sure whether the code will actually work for other systems, but it was merged for just ppc32 rather than powermac a very long time ago. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-07 20:59:44 +08:00
#ifdef CONFIG_ALTIVEC
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Stop pending alitvec streams and memory accesses */
BEGIN_FTR_SECTION
DSSALL
END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
[POWERPC] Make altivec code in swsusp_32.S depend on CONFIG_ALTIVEC This makes the altivec code in swsusp_32.S depend on CONFIG_ALTIVEC to avoid build failures for systems that don't have altivec. I'm not sure whether the code will actually work for other systems, but it was merged for just ppc32 rather than powermac a very long time ago. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-11-07 20:59:44 +08:00
#endif
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
sync
/* Disable MSR:DR to make sure we don't take a TLB or
* hash miss during the copy, as our hash table will
* for a while be unuseable. For .text, we assume we are
* covered by a BAT. This works only for non-G5 at this
* point. G5 will need a better approach, possibly using
* a small temporary hash table filled with large mappings,
* disabling the MMU completely isn't a good option for
* performance reasons.
* (Note that 750's may have the same performance issue as
* the G5 in this case, we should investigate using moving
* BATs for these CPUs)
*/
mfmsr r0
sync
rlwinm r0,r0,0,28,26 /* clear MSR_DR */
mtmsr r0
sync
isync
/* Load ptr the list of pages to copy in r3 */
[PATCH] Change the name of pagedir_nosave The name of the pagedir_nosave variable does not make sense any more, so it seems reasonable to change it to something more meaningful. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26 14:32:52 +08:00
lis r11,(restore_pblist - KERNELBASE)@h
ori r11,r11,restore_pblist@l
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
lwz r10,0(r11)
/* Copy the pages. This is a very basic implementation, to
* be replaced by something more cache efficient */
1:
tophys(r3,r10)
li r0,256
mtctr r0
lwz r11,pbe_address(r3) /* source */
tophys(r5,r11)
lwz r10,pbe_orig_address(r3) /* destination */
tophys(r6,r10)
2:
lwz r8,0(r5)
lwz r9,4(r5)
lwz r10,8(r5)
lwz r11,12(r5)
addi r5,r5,16
stw r8,0(r6)
stw r9,4(r6)
stw r10,8(r6)
stw r11,12(r6)
addi r6,r6,16
bdnz 2b
lwz r10,pbe_next(r3)
cmpwi 0,r10,0
bne 1b
/* Do a very simple cache flush/inval of the L1 to ensure
* coherency of the icache
*/
lis r3,0x0002
mtctr r3
li r3, 0
1:
lwz r0,0(r3)
addi r3,r3,0x0020
bdnz 1b
isync
sync
/* Now flush those cache lines */
lis r3,0x0002
mtctr r3
li r3, 0
1:
dcbf 0,r3
addi r3,r3,0x0020
bdnz 1b
sync
/* Ok, we are now running with the kernel data of the old
* kernel fully restored. We can get to the save area
* easily now. As for the rest of the code, it assumes the
* loader kernel and the booted one are exactly identical
*/
lis r11,swsusp_save_area@h
ori r11,r11,swsusp_save_area@l
tophys(r11,r11)
#if 0
/* Restore various CPU config stuffs */
bl __restore_cpu_setup
#endif
/* Restore the BATs, and SDR1. Then we can turn on the MMU.
* This is a bit hairy as we are running out of those BATs,
* but first, our code is probably in the icache, and we are
* writing the same value to the BAT, so that should be fine,
* though a better solution will have to be found long-term
*/
lwz r4,SL_SDR1(r11)
mtsdr1 r4
lwz r4,SL_SPRG0(r11)
mtsprg 0,r4
lwz r4,SL_SPRG0+4(r11)
mtsprg 1,r4
lwz r4,SL_SPRG0+8(r11)
mtsprg 2,r4
lwz r4,SL_SPRG0+12(r11)
mtsprg 3,r4
#if 0
lwz r4,SL_DBAT0(r11)
mtdbatu 0,r4
lwz r4,SL_DBAT0+4(r11)
mtdbatl 0,r4
lwz r4,SL_DBAT1(r11)
mtdbatu 1,r4
lwz r4,SL_DBAT1+4(r11)
mtdbatl 1,r4
lwz r4,SL_DBAT2(r11)
mtdbatu 2,r4
lwz r4,SL_DBAT2+4(r11)
mtdbatl 2,r4
lwz r4,SL_DBAT3(r11)
mtdbatu 3,r4
lwz r4,SL_DBAT3+4(r11)
mtdbatl 3,r4
lwz r4,SL_IBAT0(r11)
mtibatu 0,r4
lwz r4,SL_IBAT0+4(r11)
mtibatl 0,r4
lwz r4,SL_IBAT1(r11)
mtibatu 1,r4
lwz r4,SL_IBAT1+4(r11)
mtibatl 1,r4
lwz r4,SL_IBAT2(r11)
mtibatu 2,r4
lwz r4,SL_IBAT2+4(r11)
mtibatl 2,r4
lwz r4,SL_IBAT3(r11)
mtibatu 3,r4
lwz r4,SL_IBAT3+4(r11)
mtibatl 3,r4
#endif
powerpc/mm: Introduce MMU features We're soon running out of CPU features and I need to add some new ones for various MMU related bits, so this patch separates the MMU features from the CPU features. I moved over the 32-bit MMU related ones, added base features for MMU type families, but didn't move over any 64-bit only feature yet. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-19 03:13:32 +08:00
BEGIN_MMU_FTR_SECTION
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
li r4,0
mtspr SPRN_DBAT4U,r4
mtspr SPRN_DBAT4L,r4
mtspr SPRN_DBAT5U,r4
mtspr SPRN_DBAT5L,r4
mtspr SPRN_DBAT6U,r4
mtspr SPRN_DBAT6L,r4
mtspr SPRN_DBAT7U,r4
mtspr SPRN_DBAT7L,r4
mtspr SPRN_IBAT4U,r4
mtspr SPRN_IBAT4L,r4
mtspr SPRN_IBAT5U,r4
mtspr SPRN_IBAT5L,r4
mtspr SPRN_IBAT6U,r4
mtspr SPRN_IBAT6L,r4
mtspr SPRN_IBAT7U,r4
mtspr SPRN_IBAT7L,r4
powerpc/mm: Introduce MMU features We're soon running out of CPU features and I need to add some new ones for various MMU related bits, so this patch separates the MMU features from the CPU features. I moved over the 32-bit MMU related ones, added base features for MMU type families, but didn't move over any 64-bit only feature yet. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-19 03:13:32 +08:00
END_MMU_FTR_SECTION_IFSET(MMU_FTR_USE_HIGH_BATS)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Flush all TLBs */
lis r4,0x1000
1: addic. r4,r4,-0x1000
tlbie r4
powerpc/swsusp_32: Fix TLB invalidation It seems there is a thinko in the TLB invalidation code that makes the tlbie in the loop executed just once. The intended check was probably 'gt', not 'lt'. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-30 15:40:17 +08:00
bgt 1b
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
sync
/* restore the MSR and turn on the MMU */
lwz r3,SL_MSR(r11)
bl turn_on_mmu
tovirt(r11,r11)
/* Restore TB */
li r3,0
mttbl r3
lwz r3,SL_TB(r11)
lwz r4,SL_TB+4(r11)
mttbu r3
mttbl r4
/* Kick decrementer */
li r0,1
mtdec r0
/* Restore the callee-saved registers and return */
lwz r0,SL_CR(r11)
mtcr r0
lwz r2,SL_R2(r11)
lmw r12,SL_R12(r11)
lwz r1,SL_SP(r11)
lwz r0,SL_LR(r11)
mtlr r0
// XXX Note: we don't really need to call swsusp_resume
li r3,0
blr
/* FIXME:This construct is actually not useful since we don't shut
* down the instruction MMU, we could just flip back MSR-DR on.
*/
turn_on_mmu:
mflr r4
mtsrr0 r4
mtsrr1 r3
sync
isync
rfi
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