summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kernel
diff options
context:
space:
mode:
authorStuart Yoder <stuart.yoder@freescale.com>2012-07-05 04:41:35 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-07-11 14:18:22 +1000
commit9778b696a0188ad3b3524b383953ee73b31b7b68 (patch)
treeae706a4c23f3e5da85c6bc6e33a534eb20d0d338 /arch/powerpc/kernel
parentdb9112173b185995b80f56e136bd2ae44e4e6366 (diff)
downloadlinux-9778b696a0188ad3b3524b383953ee73b31b7b68.tar.gz
linux-9778b696a0188ad3b3524b383953ee73b31b7b68.tar.bz2
linux-9778b696a0188ad3b3524b383953ee73b31b7b68.zip
powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/entry_32.S24
-rw-r--r--arch/powerpc/kernel/entry_64.S12
-rw-r--r--arch/powerpc/kernel/exceptions-64e.S2
-rw-r--r--arch/powerpc/kernel/exceptions-64s.S2
-rw-r--r--arch/powerpc/kernel/head_fsl_booke.S2
-rw-r--r--arch/powerpc/kernel/idle_6xx.S4
-rw-r--r--arch/powerpc/kernel/idle_book3e.S2
-rw-r--r--arch/powerpc/kernel/idle_e500.S4
-rw-r--r--arch/powerpc/kernel/idle_power4.S2
-rw-r--r--arch/powerpc/kernel/iommu.c.rej22
-rw-r--r--arch/powerpc/kernel/misc_32.S4
11 files changed, 51 insertions, 29 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index ba3aeb4bc06a..bad42e3d27a9 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -92,7 +92,7 @@ crit_transfer_to_handler:
mfspr r8,SPRN_SPRG_THREAD
lwz r0,KSP_LIMIT(r8)
stw r0,SAVED_KSP_LIMIT(r11)
- rlwimi r0,r1,0,0,(31-THREAD_SHIFT)
+ CURRENT_THREAD_INFO(r0, r1)
stw r0,KSP_LIMIT(r8)
/* fall through */
#endif
@@ -112,7 +112,7 @@ crit_transfer_to_handler:
mfspr r8,SPRN_SPRG_THREAD
lwz r0,KSP_LIMIT(r8)
stw r0,saved_ksp_limit@l(0)
- rlwimi r0,r1,0,0,(31-THREAD_SHIFT)
+ CURRENT_THREAD_INFO(r0, r1)
stw r0,KSP_LIMIT(r8)
/* fall through */
#endif
@@ -158,7 +158,7 @@ transfer_to_handler:
tophys(r11,r11)
addi r11,r11,global_dbcr0@l
#ifdef CONFIG_SMP
- rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
+ CURRENT_THREAD_INFO(r9, r1)
lwz r9,TI_CPU(r9)
slwi r9,r9,3
add r11,r11,r9
@@ -179,7 +179,7 @@ transfer_to_handler:
ble- stack_ovf /* then the kernel stack overflowed */
5:
#if defined(CONFIG_6xx) || defined(CONFIG_E500)
- rlwinm r9,r1,0,0,31-THREAD_SHIFT
+ CURRENT_THREAD_INFO(r9, r1)
tophys(r9,r9) /* check local flags */
lwz r12,TI_LOCAL_FLAGS(r9)
mtcrf 0x01,r12
@@ -333,7 +333,7 @@ _GLOBAL(DoSyscall)
mtmsr r11
1:
#endif /* CONFIG_TRACE_IRQFLAGS */
- rlwinm r10,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
+ CURRENT_THREAD_INFO(r10, r1)
lwz r11,TI_FLAGS(r10)
andi. r11,r11,_TIF_SYSCALL_T_OR_A
bne- syscall_dotrace
@@ -354,7 +354,7 @@ ret_from_syscall:
bl do_show_syscall_exit
#endif
mr r6,r3
- rlwinm r12,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
+ CURRENT_THREAD_INFO(r12, r1)
/* disable interrupts so current_thread_info()->flags can't change */
LOAD_MSR_KERNEL(r10,MSR_KERNEL) /* doesn't include MSR_EE */
/* Note: We don't bother telling lockdep about it */
@@ -815,7 +815,7 @@ ret_from_except:
user_exc_return: /* r10 contains MSR_KERNEL here */
/* Check current_thread_info()->flags */
- rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
+ CURRENT_THREAD_INFO(r9, r1)
lwz r9,TI_FLAGS(r9)
andi. r0,r9,_TIF_USER_WORK_MASK
bne do_work
@@ -835,7 +835,7 @@ restore_user:
/* N.B. the only way to get here is from the beq following ret_from_except. */
resume_kernel:
/* check current_thread_info->preempt_count */
- rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
+ CURRENT_THREAD_INFO(r9, r1)
lwz r0,TI_PREEMPT(r9)
cmpwi 0,r0,0 /* if non-zero, just restore regs and return */
bne restore
@@ -852,7 +852,7 @@ resume_kernel:
bl trace_hardirqs_off
#endif
1: bl preempt_schedule_irq
- rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
+ CURRENT_THREAD_INFO(r9, r1)
lwz r3,TI_FLAGS(r9)
andi. r0,r3,_TIF_NEED_RESCHED
bne- 1b
@@ -1122,7 +1122,7 @@ ret_from_debug_exc:
lwz r10,SAVED_KSP_LIMIT(r1)
stw r10,KSP_LIMIT(r9)
lwz r9,THREAD_INFO-THREAD(r9)
- rlwinm r10,r1,0,0,(31-THREAD_SHIFT)
+ CURRENT_THREAD_INFO(r10, r1)
lwz r10,TI_PREEMPT(r10)
stw r10,TI_PREEMPT(r9)
RESTORE_xSRR(SRR0,SRR1);
@@ -1156,7 +1156,7 @@ load_dbcr0:
lis r11,global_dbcr0@ha
addi r11,r11,global_dbcr0@l
#ifdef CONFIG_SMP
- rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
+ CURRENT_THREAD_INFO(r9, r1)
lwz r9,TI_CPU(r9)
slwi r9,r9,3
add r11,r11,r9
@@ -1197,7 +1197,7 @@ recheck:
LOAD_MSR_KERNEL(r10,MSR_KERNEL)
SYNC
MTMSRD(r10) /* disable interrupts */
- rlwinm r9,r1,0,0,(31-THREAD_SHIFT)
+ CURRENT_THREAD_INFO(r9, r1)
lwz r9,TI_FLAGS(r9)
andi. r0,r9,_TIF_NEED_RESCHED
bne- do_resched
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index cf38a17ab28a..4b01a25e29ef 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -146,7 +146,7 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR)
REST_2GPRS(7,r1)
addi r9,r1,STACK_FRAME_OVERHEAD
#endif
- clrrdi r11,r1,THREAD_SHIFT
+ CURRENT_THREAD_INFO(r11, r1)
ld r10,TI_FLAGS(r11)
andi. r11,r10,_TIF_SYSCALL_T_OR_A
bne- syscall_dotrace
@@ -181,7 +181,7 @@ syscall_exit:
bl .do_show_syscall_exit
ld r3,RESULT(r1)
#endif
- clrrdi r12,r1,THREAD_SHIFT
+ CURRENT_THREAD_INFO(r12, r1)
ld r8,_MSR(r1)
#ifdef CONFIG_PPC_BOOK3S
@@ -260,7 +260,7 @@ syscall_dotrace:
ld r7,GPR7(r1)
ld r8,GPR8(r1)
addi r9,r1,STACK_FRAME_OVERHEAD
- clrrdi r10,r1,THREAD_SHIFT
+ CURRENT_THREAD_INFO(r10, r1)
ld r10,TI_FLAGS(r10)
b .Lsyscall_dotrace_cont
@@ -500,7 +500,7 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT)
2:
#endif /* !CONFIG_PPC_BOOK3S */
- clrrdi r7,r8,THREAD_SHIFT /* base of new stack */
+ CURRENT_THREAD_INFO(r7, r8) /* base of new stack */
/* Note: this uses SWITCH_FRAME_SIZE rather than INT_FRAME_SIZE
because we don't need to leave the 288-byte ABI gap at the
top of the kernel stack. */
@@ -559,7 +559,7 @@ _GLOBAL(ret_from_except_lite)
mtmsrd r10,1 /* Update machine state */
#endif /* CONFIG_PPC_BOOK3E */
- clrrdi r9,r1,THREAD_SHIFT /* current_thread_info() */
+ CURRENT_THREAD_INFO(r9, r1)
ld r3,_MSR(r1)
ld r4,TI_FLAGS(r9)
andi. r3,r3,MSR_PR
@@ -602,7 +602,7 @@ resume_kernel:
1: bl .preempt_schedule_irq
/* Re-test flags and eventually loop */
- clrrdi r9,r1,THREAD_SHIFT
+ CURRENT_THREAD_INFO(r9, r1)
ld r4,TI_FLAGS(r9)
andi. r0,r4,_TIF_NEED_RESCHED
bne 1b
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index ecba705bd628..98be7f0cd227 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -222,7 +222,7 @@ exc_##n##_bad_stack: \
* interrupts happen before the wait instruction.
*/
#define CHECK_NAPPING() \
- clrrdi r11,r1,THREAD_SHIFT; \
+ CURRENT_THREAD_INFO(r11, r1); \
ld r10,TI_LOCAL_FLAGS(r11); \
andi. r9,r10,_TLF_NAPPING; \
beq+ 1f; \
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 1c06d2971545..8ad346882684 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -851,7 +851,7 @@ BEGIN_FTR_SECTION
bne- do_ste_alloc /* If so handle it */
END_MMU_FTR_SECTION_IFCLR(MMU_FTR_SLB)
- clrrdi r11,r1,THREAD_SHIFT
+ CURRENT_THREAD_INFO(r11, r1)
lwz r0,TI_PREEMPT(r11) /* If we're in an "NMI" */
andis. r0,r0,NMI_MASK@h /* (i.e. an irq when soft-disabled) */
bne 77f /* then don't call hash_page now */
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 1f4434a38608..7e7bd88674db 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -192,7 +192,7 @@ _ENTRY(__early_start)
li r0,0
stwu r0,THREAD_SIZE-STACK_FRAME_OVERHEAD(r1)
- rlwinm r22,r1,0,0,31-THREAD_SHIFT /* current thread_info */
+ CURRENT_THREAD_INFO(r22, r1)
stw r24, TI_CPU(r22)
bl early_init
diff --git a/arch/powerpc/kernel/idle_6xx.S b/arch/powerpc/kernel/idle_6xx.S
index 15c611de1ee2..1686916cc7f0 100644
--- a/arch/powerpc/kernel/idle_6xx.S
+++ b/arch/powerpc/kernel/idle_6xx.S
@@ -135,7 +135,7 @@ BEGIN_FTR_SECTION
DSSALL
sync
END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
- rlwinm r9,r1,0,0,31-THREAD_SHIFT /* current thread_info */
+ CURRENT_THREAD_INFO(r9, r1)
lwz r8,TI_LOCAL_FLAGS(r9) /* set napping bit */
ori r8,r8,_TLF_NAPPING /* so when we take an exception */
stw r8,TI_LOCAL_FLAGS(r9) /* it will return to our caller */
@@ -158,7 +158,7 @@ _GLOBAL(power_save_ppc32_restore)
stw r9,_NIP(r11) /* make it do a blr */
#ifdef CONFIG_SMP
- rlwinm r12,r11,0,0,31-THREAD_SHIFT
+ CURRENT_THREAD_INFO(r12, r11)
lwz r11,TI_CPU(r12) /* get cpu number * 4 */
slwi r11,r11,2
#else
diff --git a/arch/powerpc/kernel/idle_book3e.S b/arch/powerpc/kernel/idle_book3e.S
index ff007b59448d..4c7cb4008585 100644
--- a/arch/powerpc/kernel/idle_book3e.S
+++ b/arch/powerpc/kernel/idle_book3e.S
@@ -60,7 +60,7 @@ _GLOBAL(book3e_idle)
1: /* Let's set the _TLF_NAPPING flag so interrupts make us return
* to the right spot
*/
- clrrdi r11,r1,THREAD_SHIFT
+ CURRENT_THREAD_INFO(r11, r1)
ld r10,TI_LOCAL_FLAGS(r11)
ori r10,r10,_TLF_NAPPING
std r10,TI_LOCAL_FLAGS(r11)
diff --git a/arch/powerpc/kernel/idle_e500.S b/arch/powerpc/kernel/idle_e500.S
index 4f0ab85f3788..15448668988d 100644
--- a/arch/powerpc/kernel/idle_e500.S
+++ b/arch/powerpc/kernel/idle_e500.S
@@ -21,7 +21,7 @@
.text
_GLOBAL(e500_idle)
- rlwinm r3,r1,0,0,31-THREAD_SHIFT /* current thread_info */
+ CURRENT_THREAD_INFO(r3, r1)
lwz r4,TI_LOCAL_FLAGS(r3) /* set napping bit */
ori r4,r4,_TLF_NAPPING /* so when we take an exception */
stw r4,TI_LOCAL_FLAGS(r3) /* it will return to our caller */
@@ -96,7 +96,7 @@ _GLOBAL(power_save_ppc32_restore)
stw r9,_NIP(r11) /* make it do a blr */
#ifdef CONFIG_SMP
- rlwinm r12,r1,0,0,31-THREAD_SHIFT
+ CURRENT_THREAD_INFO(r12, r1)
lwz r11,TI_CPU(r12) /* get cpu number * 4 */
slwi r11,r11,2
#else
diff --git a/arch/powerpc/kernel/idle_power4.S b/arch/powerpc/kernel/idle_power4.S
index 2c71b0fc9f91..e3edaa189911 100644
--- a/arch/powerpc/kernel/idle_power4.S
+++ b/arch/powerpc/kernel/idle_power4.S
@@ -59,7 +59,7 @@ BEGIN_FTR_SECTION
DSSALL
sync
END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
- clrrdi r9,r1,THREAD_SHIFT /* current thread_info */
+ CURRENT_THREAD_INFO(r9, r1)
ld r8,TI_LOCAL_FLAGS(r9) /* set napping bit */
ori r8,r8,_TLF_NAPPING /* so when we take an exception */
std r8,TI_LOCAL_FLAGS(r9) /* it will return to our caller */
diff --git a/arch/powerpc/kernel/iommu.c.rej b/arch/powerpc/kernel/iommu.c.rej
new file mode 100644
index 000000000000..9d10d341cf86
--- /dev/null
+++ b/arch/powerpc/kernel/iommu.c.rej
@@ -0,0 +1,22 @@
+--- arch/powerpc/kernel/iommu.c 2012-06-08 09:01:02.785709100 +1000
++++ arch/powerpc/kernel/iommu.c 2012-06-08 09:01:07.489784856 +1000
+@@ -33,7 +33,9 @@
+ #include <linux/bitmap.h>
+ #include <linux/iommu-helper.h>
+ #include <linux/crash_dump.h>
++#include <linux/fault-inject.h>
+ #include <asm/io.h>
++#include <asm/vio.h>
+ #include <asm/prom.h>
+ #include <asm/iommu.h>
+ #include <asm/pci-bridge.h>
+@@ -171,6 +261,9 @@
+ return DMA_ERROR_CODE;
+ }
+
++ if (should_fail_iommu(dev))
++ return DMA_ERROR_CODE;
++
+ if (handle && *handle)
+ start = *handle;
+ else
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 386d57f66f28..407e293aad2f 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -179,7 +179,7 @@ _GLOBAL(low_choose_750fx_pll)
mtspr SPRN_HID1,r4
/* Store new HID1 image */
- rlwinm r6,r1,0,0,(31-THREAD_SHIFT)
+ CURRENT_THREAD_INFO(r6, r1)
lwz r6,TI_CPU(r6)
slwi r6,r6,2
addis r6,r6,nap_save_hid1@ha
@@ -699,7 +699,7 @@ _GLOBAL(kernel_thread)
#ifdef CONFIG_SMP
_GLOBAL(start_secondary_resume)
/* Reset stack */
- rlwinm r1,r1,0,0,(31-THREAD_SHIFT) /* current_thread_info() */
+ CURRENT_THREAD_INFO(r1, r1)
addi r1,r1,THREAD_SIZE-STACK_FRAME_OVERHEAD
li r3,0
stw r3,0(r1) /* Zero the stack frame pointer */