Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Make alignment exception always check exception table
  [POWERPC] Disallow kprobes on emulate_step and branch_taken
  [POWERPC] Make mmiowb's io_sync preempt safe
  [POWERPC] Make high hugepage areas preempt safe
  [POWERPC] Make current preempt-safe
  [POWERPC] qe_lib: qe_issue_cmd writes wrong value to CECDR
  [POWERPC] Use 4kB iommu pages even on 64kB-page systems
  [POWERPC] Fix oprofile support for e500 in arch/powerpc
  [POWERPC] Fix rmb() for e500-based machines it
  [POWERPC] Fix various offb issues

7 files changed, 126 insertions, 24 deletions

diff --git a/include/asm-powerpc/current.h b/include/asm-powerpc/current.h
index 1938d6abd255..b8708aedf925 100644
--- a/include/asm-powerpc/current.h
+++ b/include/asm-powerpc/current.h
@@ -14,7 +14,17 @@ struct task_struct;
 #ifdef __powerpc64__
 #include <asm/paca.h>
 
-#define current         (get_paca()->__current)
+static inline struct task_struct *get_current(void)
+{
+        struct task_struct *task;
+
+        __asm__ __volatile__("ld %0,%1(13)"
+        : "=r" (task)
+        : "i" (offsetof(struct paca_struct, __current)));
+
+        return task;
+}
+#define current get_current()
 
 #else
 
diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index 3baff8b0fd5a..c2c5f14b5f5f 100644
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -163,8 +163,11 @@ extern void _outsl_ns(volatile u32 __iomem *port, const void *buf, long count);
 
 static inline void mmiowb(void)
 {
-        __asm__ __volatile__ ("sync" : : : "memory");
-        get_paca()->io_sync = 0;
+        unsigned long tmp;
+
+        __asm__ __volatile__("sync; li %0,0; stb %0,%1(13)"
+        : "=&r" (tmp) : "i" (offsetof(struct paca_struct, io_sync))
+        : "memory");
 }
 
 /*
diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h
index a5e98641a2ae..39fad685ffab 100644
--- a/include/asm-powerpc/iommu.h
+++ b/include/asm-powerpc/iommu.h
@@ -22,17 +22,35 @@
 #define _ASM_IOMMU_H
 #ifdef __KERNEL__
 
-#include <asm/types.h>
+#include <linux/compiler.h>
 #include <linux/spinlock.h>
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
+#include <asm/types.h>
+#include <asm/bitops.h>
+
+#define IOMMU_PAGE_SHIFT      12
+#define IOMMU_PAGE_SIZE       (ASM_CONST(1) << IOMMU_PAGE_SHIFT)
+#define IOMMU_PAGE_MASK       (~((1 << IOMMU_PAGE_SHIFT) - 1))
+#define IOMMU_PAGE_ALIGN(addr) _ALIGN_UP(addr, IOMMU_PAGE_SIZE)
+
+#ifndef __ASSEMBLY__
+
+/* Pure 2^n version of get_order */
+static __inline__ __attribute_const__ int get_iommu_order(unsigned long size)
+{
+        return __ilog2((size - 1) >> IOMMU_PAGE_SHIFT) + 1;
+}
+
+#endif   /* __ASSEMBLY__ */
+
 
 /*
  * IOMAP_MAX_ORDER defines the largest contiguous block
  * of dma space we can get.  IOMAP_MAX_ORDER = 13
  * allows up to 2**12 pages (4096 * 4096) = 16 MB
  */
-#define IOMAP_MAX_ORDER 13
+#define IOMAP_MAX_ORDER         13
 
 struct iommu_table {
         unsigned long  it_busno;     /* Bus number this table belongs to */
diff --git a/include/asm-powerpc/oprofile_impl.h b/include/asm-powerpc/oprofile_impl.h
index 5b33994cd488..07a10e590c1d 100644
--- a/include/asm-powerpc/oprofile_impl.h
+++ b/include/asm-powerpc/oprofile_impl.h
@@ -42,7 +42,7 @@ struct op_powerpc_model {
         void (*reg_setup) (struct op_counter_config *,
                            struct op_system_config *,
                            int num_counters);
-        void (*cpu_setup) (void *);
+        void (*cpu_setup) (struct op_counter_config *);
         void (*start) (struct op_counter_config *);
         void (*stop) (void);
         void (*handle_interrupt) (struct pt_regs *,
@@ -121,7 +121,90 @@ static inline void ctr_write(unsigned int i, unsigned int val)
                 break;
         }
 }
-#endif /* !CONFIG_FSL_BOOKE */
+#else /* CONFIG_FSL_BOOKE */
+static inline u32 get_pmlca(int ctr)
+{
+        u32 pmlca;
+
+        switch (ctr) {
+                case 0:
+                        pmlca = mfpmr(PMRN_PMLCA0);
+                        break;
+                case 1:
+                        pmlca = mfpmr(PMRN_PMLCA1);
+                        break;
+                case 2:
+                        pmlca = mfpmr(PMRN_PMLCA2);
+                        break;
+                case 3:
+                        pmlca = mfpmr(PMRN_PMLCA3);
+                        break;
+                default:
+                        panic("Bad ctr number\n");
+        }
+
+        return pmlca;
+}
+
+static inline void set_pmlca(int ctr, u32 pmlca)
+{
+        switch (ctr) {
+                case 0:
+                        mtpmr(PMRN_PMLCA0, pmlca);
+                        break;
+                case 1:
+                        mtpmr(PMRN_PMLCA1, pmlca);
+                        break;
+                case 2:
+                        mtpmr(PMRN_PMLCA2, pmlca);
+                        break;
+                case 3:
+                        mtpmr(PMRN_PMLCA3, pmlca);
+                        break;
+                default:
+                        panic("Bad ctr number\n");
+        }
+}
+
+static inline unsigned int ctr_read(unsigned int i)
+{
+        switch(i) {
+                case 0:
+                        return mfpmr(PMRN_PMC0);
+                case 1:
+                        return mfpmr(PMRN_PMC1);
+                case 2:
+                        return mfpmr(PMRN_PMC2);
+                case 3:
+                        return mfpmr(PMRN_PMC3);
+                default:
+                        return 0;
+        }
+}
+
+static inline void ctr_write(unsigned int i, unsigned int val)
+{
+        switch(i) {
+                case 0:
+                        mtpmr(PMRN_PMC0, val);
+                        break;
+                case 1:
+                        mtpmr(PMRN_PMC1, val);
+                        break;
+                case 2:
+                        mtpmr(PMRN_PMC2, val);
+                        break;
+                case 3:
+                        mtpmr(PMRN_PMC3, val);
+                        break;
+                default:
+                        break;
+        }
+}
+
+
+#endif /* CONFIG_FSL_BOOKE */
+
 
 extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
 
diff --git a/include/asm-powerpc/pmc.h b/include/asm-powerpc/pmc.h
index 07d6a4279319..8588be68e0ad 100644
--- a/include/asm-powerpc/pmc.h
+++ b/include/asm-powerpc/pmc.h
@@ -32,18 +32,5 @@ void release_pmc_hardware(void);
 void power4_enable_pmcs(void);
 #endif
 
-#ifdef CONFIG_FSL_BOOKE
-void init_pmc_stop(int ctr);
-void set_pmc_event(int ctr, int event);
-void set_pmc_user_kernel(int ctr, int user, int kernel);
-void set_pmc_marked(int ctr, int mark0, int mark1);
-void pmc_start_ctr(int ctr, int enable);
-void pmc_start_ctrs(int enable);
-void pmc_stop_ctrs(void);
-void dump_pmcs(void);
-
-extern struct op_powerpc_model op_model_fsl_booke;
-#endif
-
 #endif /* __KERNEL__ */
 #endif /* _POWERPC_PMC_H */
diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h
index 43627596003b..f7b1227d6454 100644
--- a/include/asm-powerpc/system.h
+++ b/include/asm-powerpc/system.h
@@ -25,8 +25,8 @@
  *
  * We have to use the sync instructions for mb(), since lwsync doesn't
  * order loads with respect to previous stores.  Lwsync is fine for
- * rmb(), though.  Note that lwsync is interpreted as sync by
- * 32-bit and older 64-bit CPUs.
+ * rmb(), though. Note that rmb() actually uses a sync on 32-bit
+ * architectures.
  *
  * For wmb(), we use sync since wmb is used in drivers to order
  * stores to system memory with respect to writes to the device.
@@ -34,7 +34,7 @@
  * SMP since it is only used to order updates to system memory.
  */
 #define mb()   __asm__ __volatile__ ("sync" : : : "memory")
-#define rmb()  __asm__ __volatile__ ("lwsync" : : : "memory")
+#define rmb()  __asm__ __volatile__ (__stringify(LWSYNC) : : : "memory")
 #define wmb()  __asm__ __volatile__ ("sync" : : : "memory")
 #define read_barrier_depends()  do { } while(0)
 
diff --git a/include/asm-powerpc/tce.h b/include/asm-powerpc/tce.h
index c9483adbf599..f663634cccc9 100644
--- a/include/asm-powerpc/tce.h
+++ b/include/asm-powerpc/tce.h
@@ -22,6 +22,8 @@
 #define _ASM_POWERPC_TCE_H
 #ifdef __KERNEL__
 
+#include <asm/iommu.h>
+
 /*
  * Tces come in two formats, one for the virtual bus and a different
  * format for PCI
@@ -33,7 +35,6 @@
 
 #define TCE_SHIFT       12
 #define TCE_PAGE_SIZE   (1 << TCE_SHIFT)
-#define TCE_PAGE_FACTOR (PAGE_SHIFT - TCE_SHIFT)
 
 #define TCE_ENTRY_SIZE          8               /* each TCE is 64 bits */