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>

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 */