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

* 'merge' of master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Make sure __cpu_preinit_ppc970 gets called on 970GX processors
  [POWERPC] Fix CHRP platforms with only 8259
  [POWERPC] IPIC: Fix spinlock recursion in set_irq_handler
  [POWERPC] Fix the UCC rx/tx clock of QE
  [POWERPC] cell: update defconfig
  [POWERPC] spufs: fix another off-by-one bug in spufs_mbox_read
  [POWERPC] spufs: fix signal2 file to report signal2
  [POWERPC] Fix device_is_compatible() const warning
  [POWERPC] Cell timebase bug workaround
  [POWERPC] Support feature fixups in modules
  [POWERPC] Support feature fixups in vdso's
  [POWERPC] Support nested cpu feature sections
  [POWERPC] Consolidate feature fixup code
  [POWERPC] Fix hang in start_ldr if _end or _edata is unaligned
  [POWERPC] Fix spelling errors in ucc_fast.c and ucc_slow.c
  [POWERPC] Don't require execute perms on wrapper when building zImage.initrd
  [POWERPC] Add 970GX cputable entry
  [POWERPC] Fix build breakage with CONFIG_PPC32
  [POWERPC] Fix compiler warning message on get_property call
  [POWERPC] Simplify stolen time calculation

9 files changed, 144 insertions, 64 deletions

diff --git a/include/asm-powerpc/asm-compat.h b/include/asm-powerpc/asm-compat.h
index 8e64be0cc47d..c89bd58ee283 100644
--- a/include/asm-powerpc/asm-compat.h
+++ b/include/asm-powerpc/asm-compat.h
@@ -14,6 +14,58 @@
 #  define ASM_CONST(x)          __ASM_CONST(x)
 #endif
 
+
+/*
+ * Feature section common macros
+ *
+ * Note that the entries now contain offsets between the table entry
+ * and the code rather than absolute code pointers in order to be
+ * useable with the vdso shared library. There is also an assumption
+ * that values will be negative, that is, the fixup table has to be
+ * located after the code it fixes up.
+ */
+#ifdef CONFIG_PPC64
+#ifdef __powerpc64__
+/* 64 bits kernel, 64 bits code */
+#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect)   \
+99:                                                     \
+        .section sect,"a";                              \
+        .align 3;                                       \
+98:                                                     \
+        .llong msk;                                     \
+        .llong val;                                     \
+        .llong label##b-98b;                            \
+        .llong 99b-98b;                                 \
+        .previous
+#else /* __powerpc64__ */
+/* 64 bits kernel, 32 bits code (ie. vdso32) */
+#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect)   \
+99:                                                     \
+        .section sect,"a";                              \
+        .align 3;                                       \
+98:                                                     \
+        .llong msk;                                     \
+        .llong val;                                     \
+        .long 0xffffffff;                               \
+        .long label##b-98b;                             \
+        .long 0xffffffff;                               \
+        .long 99b-98b;                                  \
+        .previous
+#endif /* !__powerpc64__ */
+#else /* CONFIG_PPC64 */
+/* 32 bits kernel, 32 bits code */
+#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect)   \
+99:                                                     \
+        .section sect,"a";                              \
+        .align 2;                                       \
+98:                                                     \
+        .long msk;                                      \
+        .long val;                                      \
+        .long label##b-98b;                             \
+        .long 99b-98b;                                  \
+        .previous
+#endif /* !CONFIG_PPC64 */
+
 #ifdef __powerpc64__
 
 /* operations for longs and pointers */
diff --git a/include/asm-powerpc/cputable.h b/include/asm-powerpc/cputable.h
index 12707ab9dc98..a9a40149a7c0 100644
--- a/include/asm-powerpc/cputable.h
+++ b/include/asm-powerpc/cputable.h
@@ -89,8 +89,11 @@ struct cpu_spec {
 
 extern struct cpu_spec          *cur_cpu_spec;
 
-extern void identify_cpu(unsigned long offset, unsigned long cpu);
-extern void do_cpu_ftr_fixups(unsigned long offset);
+extern unsigned int __start___ftr_fixup, __stop___ftr_fixup;
+
+extern struct cpu_spec *identify_cpu(unsigned long offset);
+extern void do_feature_fixups(unsigned long value, void *fixup_start,
+                              void *fixup_end);
 
 #endif /* __ASSEMBLY__ */
 
@@ -144,6 +147,7 @@ extern void do_cpu_ftr_fixups(unsigned long offset);
 #define CPU_FTR_CI_LARGE_PAGE           LONG_ASM_CONST(0x0000100000000000)
 #define CPU_FTR_PAUSE_ZERO              LONG_ASM_CONST(0x0000200000000000)
 #define CPU_FTR_PURR                    LONG_ASM_CONST(0x0000400000000000)
+#define CPU_FTR_CELL_TB_BUG             LONG_ASM_CONST(0x0000800000000000)
 
 #ifndef __ASSEMBLY__
 
@@ -332,7 +336,7 @@ extern void do_cpu_ftr_fixups(unsigned long offset);
 #define CPU_FTRS_CELL   (CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB | \
             CPU_FTR_HPTE_TABLE | CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \
             CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \
-            CPU_FTR_PAUSE_ZERO | CPU_FTR_CI_LARGE_PAGE)
+            CPU_FTR_PAUSE_ZERO | CPU_FTR_CI_LARGE_PAGE | CPU_FTR_CELL_TB_BUG)
 #define CPU_FTRS_PA6T (CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB | \
             CPU_FTR_HPTE_TABLE | CPU_FTR_PPCAS_ARCH_V2 | \
             CPU_FTR_ALTIVEC_COMP | CPU_FTR_CI_LARGE_PAGE | \
@@ -431,29 +435,12 @@ static inline int cpu_has_feature(unsigned long feature)
 
 #ifdef __ASSEMBLY__
 
-#define BEGIN_FTR_SECTION               98:
-
-#ifndef __powerpc64__
+#define BEGIN_FTR_SECTION_NESTED(label) label:
+#define BEGIN_FTR_SECTION               BEGIN_FTR_SECTION_NESTED(97)
+#define END_FTR_SECTION_NESTED(msk, val, label) \
+        MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup)
 #define END_FTR_SECTION(msk, val)               \
-99:                                             \
-        .section __ftr_fixup,"a";               \
-        .align 2;                               \
-        .long msk;                              \
-        .long val;                              \
-        .long 98b;                              \
-        .long 99b;                              \
-        .previous
-#else /* __powerpc64__ */
-#define END_FTR_SECTION(msk, val)               \
-99:                                             \
-        .section __ftr_fixup,"a";               \
-        .align 3;                               \
-        .llong msk;                             \
-        .llong val;                             \
-        .llong 98b;                             \
-        .llong 99b;                             \
-        .previous
-#endif /* __powerpc64__ */
+        END_FTR_SECTION_NESTED(msk, val, 97)
 
 #define END_FTR_SECTION_IFSET(msk)      END_FTR_SECTION((msk), (msk))
 #define END_FTR_SECTION_IFCLR(msk)      END_FTR_SECTION((msk), 0)
diff --git a/include/asm-powerpc/firmware.h b/include/asm-powerpc/firmware.h
index 1022737f4f34..fdf9aff71150 100644
--- a/include/asm-powerpc/firmware.h
+++ b/include/asm-powerpc/firmware.h
@@ -96,19 +96,16 @@ extern void machine_check_fwnmi(void);
 /* This is true if we are using the firmware NMI handler (typically LPAR) */
 extern int fwnmi_active;
 
-#else /* __ASSEMBLY__ */
+extern unsigned int __start___fw_ftr_fixup, __stop___fw_ftr_fixup;
 
-#define BEGIN_FW_FTR_SECTION            96:
+#else /* __ASSEMBLY__ */
 
+#define BEGIN_FW_FTR_SECTION_NESTED(label)      label:
+#define BEGIN_FW_FTR_SECTION                    BEGIN_FW_FTR_SECTION_NESTED(97)
+#define END_FW_FTR_SECTION_NESTED(msk, val, label) \
+        MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
 #define END_FW_FTR_SECTION(msk, val)            \
-97:                                             \
-        .section __fw_ftr_fixup,"a";            \
-        .align 3;                               \
-        .llong msk;                             \
-        .llong val;                             \
-        .llong 96b;                             \
-        .llong 97b;                             \
-        .previous
+        END_FW_FTR_SECTION_NESTED(msk, val, 97)
 
 #define END_FW_FTR_SECTION_IFSET(msk)   END_FW_FTR_SECTION((msk), (msk))
 #define END_FW_FTR_SECTION_IFCLR(msk)   END_FW_FTR_SECTION((msk), 0)
diff --git a/include/asm-powerpc/i8259.h b/include/asm-powerpc/i8259.h
index 78489fb8d140..db1362f8c603 100644
--- a/include/asm-powerpc/i8259.h
+++ b/include/asm-powerpc/i8259.h
@@ -7,6 +7,7 @@
 #ifdef CONFIG_PPC_MERGE
 extern void i8259_init(struct device_node *node, unsigned long intack_addr);
 extern unsigned int i8259_irq(void);
+extern struct irq_host *i8259_get_host(void);
 #else
 extern void i8259_init(unsigned long intack_addr, int offset);
 extern int i8259_irq(void);
diff --git a/include/asm-powerpc/ppc_asm.h b/include/asm-powerpc/ppc_asm.h
index a940cfe040da..fa083d8e4663 100644
--- a/include/asm-powerpc/ppc_asm.h
+++ b/include/asm-powerpc/ppc_asm.h
@@ -30,9 +30,9 @@ BEGIN_FTR_SECTION;							\
         mfspr   ra,SPRN_PURR;           /* get processor util. reg */   \
 END_FTR_SECTION_IFSET(CPU_FTR_PURR);                                    \
 BEGIN_FTR_SECTION;                                                      \
-        mftb    ra;                     /* or get TB if no PURR */      \
+        MFTB(ra);                       /* or get TB if no PURR */      \
 END_FTR_SECTION_IFCLR(CPU_FTR_PURR);                                    \
-        ld      rb,PACA_STARTPURR(r13);                         \
+        ld      rb,PACA_STARTPURR(r13);                                 \
         std     ra,PACA_STARTPURR(r13);                                 \
         subf    rb,rb,ra;               /* subtract start value */      \
         ld      ra,PACA_USER_TIME(r13);                                 \
@@ -45,9 +45,9 @@ BEGIN_FTR_SECTION;							\
         mfspr   ra,SPRN_PURR;           /* get processor util. reg */   \
 END_FTR_SECTION_IFSET(CPU_FTR_PURR);                                    \
 BEGIN_FTR_SECTION;                                                      \
-        mftb    ra;                     /* or get TB if no PURR */      \
+        MFTB(ra);                       /* or get TB if no PURR */      \
 END_FTR_SECTION_IFCLR(CPU_FTR_PURR);                                    \
-        ld      rb,PACA_STARTPURR(r13);                         \
+        ld      rb,PACA_STARTPURR(r13);                                 \
         std     ra,PACA_STARTPURR(r13);                                 \
         subf    rb,rb,ra;               /* subtract start value */      \
         ld      ra,PACA_SYSTEM_TIME(r13);                               \
@@ -274,6 +274,16 @@ END_FTR_SECTION_IFSET(CPU_FTR_601)
 #define ISYNC_601
 #endif
 
+#ifdef CONFIG_PPC_CELL
+#define MFTB(dest)                      \
+90:     mftb  dest;                     \
+BEGIN_FTR_SECTION_NESTED(96);           \
+        cmpwi dest,0;                   \
+        beq-  90b;                      \
+END_FTR_SECTION_NESTED(CPU_FTR_CELL_TB_BUG, CPU_FTR_CELL_TB_BUG, 96)
+#else
+#define MFTB(dest)                      mftb dest
+#endif
 
 #ifndef CONFIG_SMP
 #define TLBSYNC
diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h
index 524629769336..ec11d44eaeb5 100644
--- a/include/asm-powerpc/prom.h
+++ b/include/asm-powerpc/prom.h
@@ -134,7 +134,7 @@ extern struct device_node *of_find_all_nodes(struct device_node *prev);
 extern struct device_node *of_get_parent(const struct device_node *node);
 extern struct device_node *of_get_next_child(const struct device_node *node,
                                              struct device_node *prev);
-extern struct property *of_find_property(struct device_node *np,
+extern struct property *of_find_property(const struct device_node *np,
                                          const char *name,
                                          int *lenp);
 extern struct device_node *of_node_get(struct device_node *node);
@@ -158,10 +158,12 @@ extern void of_detach_node(const struct device_node *);
 extern void finish_device_tree(void);
 extern void unflatten_device_tree(void);
 extern void early_init_devtree(void *);
-extern int device_is_compatible(struct device_node *device, const char *);
+extern int device_is_compatible(const struct device_node *device,
+                                const char *);
 extern int machine_is_compatible(const char *compat);
-extern const void *get_property(struct device_node *node, const char *name,
-                int *lenp);
+extern const void *get_property(const struct device_node *node,
+                                const char *name,
+                                int *lenp);
 extern void print_properties(struct device_node *node);
 extern int prom_n_addr_cells(struct device_node* np);
 extern int prom_n_size_cells(struct device_node* np);
diff --git a/include/asm-powerpc/reg.h b/include/asm-powerpc/reg.h
index 8fb96811b55d..6faae7b14d55 100644
--- a/include/asm-powerpc/reg.h
+++ b/include/asm-powerpc/reg.h
@@ -591,6 +591,7 @@
 #define PV_630          0x0040
 #define PV_630p 0x0041
 #define PV_970MP        0x0044
+#define PV_970GX        0x0045
 #define PV_BE           0x0070
 #define PV_PA6T         0x0090
 
@@ -618,10 +619,35 @@
                                 : "=r" (rval)); rval;})
 #define mtspr(rn, v)    asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
 
+#ifdef __powerpc64__
+#ifdef CONFIG_PPC_CELL
+#define mftb()          ({unsigned long rval;                           \
+                        asm volatile(                                   \
+                                "90:    mftb %0;\n"                     \
+                                "97:    cmpwi %0,0;\n"                  \
+                                "       beq- 90b;\n"                    \
+                                "99:\n"                                 \
+                                ".section __ftr_fixup,\"a\"\n"          \
+                                ".align 3\n"                            \
+                                "98:\n"                                 \
+                                "       .llong %1\n"                    \
+                                "       .llong %1\n"                    \
+                                "       .llong 97b-98b\n"               \
+                                "       .llong 99b-98b\n"               \
+                                ".previous"                             \
+                        : "=r" (rval) : "i" (CPU_FTR_CELL_TB_BUG)); rval;})
+#else
 #define mftb()          ({unsigned long rval;   \
                         asm volatile("mftb %0" : "=r" (rval)); rval;})
+#endif /* !CONFIG_PPC_CELL */
+
+#else /* __powerpc64__ */
+
 #define mftbl()         ({unsigned long rval;   \
                         asm volatile("mftbl %0" : "=r" (rval)); rval;})
+#define mftbu()         ({unsigned long rval;   \
+                        asm volatile("mftbu %0" : "=r" (rval)); rval;})
+#endif /* !__powerpc64__ */
 
 #define mttbl(v)        asm volatile("mttbl %0":: "r"(v))
 #define mttbu(v)        asm volatile("mttbu %0":: "r"(v))
diff --git a/include/asm-powerpc/time.h b/include/asm-powerpc/time.h
index b051d4c88c3b..a78285010d62 100644
--- a/include/asm-powerpc/time.h
+++ b/include/asm-powerpc/time.h
@@ -82,30 +82,35 @@ struct div_result {
 #define __USE_RTC()     0
 #endif
 
-/* On ppc64 this gets us the whole timebase; on ppc32 just the lower half */
+#ifdef CONFIG_PPC64
+
+/* For compatibility, get_tbl() is defined as get_tb() on ppc64 */
+#define get_tbl         get_tb
+
+#else
+
 static inline unsigned long get_tbl(void)
 {
-        unsigned long tbl;
-
 #if defined(CONFIG_403GCX)
+        unsigned long tbl;
         asm volatile("mfspr %0, 0x3dd" : "=r" (tbl));
+        return tbl;
 #else
-        asm volatile("mftb %0" : "=r" (tbl));
+        return mftbl();
 #endif
-        return tbl;
 }
 
 static inline unsigned int get_tbu(void)
 {
+#ifdef CONFIG_403GCX
         unsigned int tbu;
-
-#if defined(CONFIG_403GCX)
         asm volatile("mfspr %0, 0x3dc" : "=r" (tbu));
+        return tbu;
 #else
-        asm volatile("mftbu %0" : "=r" (tbu));
+        return mftbu();
 #endif
-        return tbu;
 }
+#endif /* !CONFIG_PPC64 */
 
 static inline unsigned int get_rtcl(void)
 {
@@ -131,7 +136,7 @@ static inline u64 get_tb(void)
 {
         return mftb();
 }
-#else
+#else /* CONFIG_PPC64 */
 static inline u64 get_tb(void)
 {
         unsigned int tbhi, tblo, tbhi2;
@@ -144,7 +149,7 @@ static inline u64 get_tb(void)
 
         return ((u64)tbhi << 32) | tblo;
 }
-#endif
+#endif /* !CONFIG_PPC64 */
 
 static inline void set_tb(unsigned int upper, unsigned int lower)
 {
diff --git a/include/asm-powerpc/timex.h b/include/asm-powerpc/timex.h
index 3b9a8e786806..92dedde761d1 100644
--- a/include/asm-powerpc/timex.h
+++ b/include/asm-powerpc/timex.h
@@ -8,6 +8,7 @@
  */
 
 #include <asm/cputable.h>
+#include <asm/reg.h>
 
 #define CLOCK_TICK_RATE 1024000 /* Underlying HZ */
 
@@ -15,13 +16,11 @@ typedef unsigned long cycles_t;
 
 static inline cycles_t get_cycles(void)
 {
-        cycles_t ret;
-
 #ifdef __powerpc64__
-
-        __asm__ __volatile__("mftb %0" : "=r" (ret) : );
-
+        return mftb();
 #else
+        cycles_t ret;
+
         /*
          * For the "cycle" counter we use the timebase lower half.
          * Currently only used on SMP.
@@ -30,18 +29,19 @@ static inline cycles_t get_cycles(void)
         ret = 0;
 
         __asm__ __volatile__(
-                "98:    mftb %0\n"
+                "97:    mftb %0\n"
                 "99:\n"
                 ".section __ftr_fixup,\"a\"\n"
+                ".align 2\n"
+                "98:\n"
                 "       .long %1\n"
                 "       .long 0\n"
-                "       .long 98b\n"
-                "       .long 99b\n"
+                "       .long 97b-98b\n"
+                "       .long 99b-98b\n"
                 ".previous"
                 : "=r" (ret) : "i" (CPU_FTR_601));
-#endif
-
         return ret;
+#endif
 }
 
 #endif  /* __KERNEL__ */