[PATCH] powerpc: G4+ oprofile support

This patch adds oprofile support for the 7450 and all its multitudinous
derivatives.

* Added 7450 (and derivatives) support for oprofile
* Changed e500 cputable to have oprofile model and cpu_type fields
* Added support for classic 32-bit performance monitor interrupt
* Cleaned up common powerpc oprofile code to be as common as possible
* Cleaned up oprofile_impl.h to reflect 32 bit classic code
* Added 32-bit MMCRx bitfield definitions and SPR numbers

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 51 insertions, 16 deletions

diff --git a/include/asm-powerpc/oprofile_impl.h b/include/asm-powerpc/oprofile_impl.h
index 8013cd273ced..b48d35e40172 100644
--- a/include/asm-powerpc/oprofile_impl.h
+++ b/include/asm-powerpc/oprofile_impl.h
@@ -22,24 +22,22 @@ struct op_counter_config {
         unsigned long enabled;
         unsigned long event;
         unsigned long count;
+        /* Classic doesn't support per-counter user/kernel selection */
         unsigned long kernel;
-#ifdef __powerpc64__
-        /* We dont support per counter user/kernel selection */
-#endif
         unsigned long user;
         unsigned long unit_mask;
 };
 
 /* System-wide configuration as set via oprofilefs.  */
 struct op_system_config {
-#ifdef __powerpc64__
+#ifdef CONFIG_PPC64
         unsigned long mmcr0;
         unsigned long mmcr1;
         unsigned long mmcra;
 #endif
         unsigned long enable_kernel;
         unsigned long enable_user;
-#ifdef __powerpc64__
+#ifdef CONFIG_PPC64
         unsigned long backtrace_spinlocks;
 #endif
 };
@@ -49,9 +47,7 @@ struct op_powerpc_model {
         void (*reg_setup) (struct op_counter_config *,
                            struct op_system_config *,
                            int num_counters);
-#ifdef __powerpc64__
         void (*cpu_setup) (void *);
-#endif
         void (*start) (struct op_counter_config *);
         void (*stop) (void);
         void (*handle_interrupt) (struct pt_regs *,
@@ -59,10 +55,19 @@ struct op_powerpc_model {
         int num_counters;
 };
 
-#ifdef __powerpc64__
+#ifdef CONFIG_FSL_BOOKE
+extern struct op_powerpc_model op_model_fsl_booke;
+#else /* Otherwise, it's classic */
+
+#ifdef CONFIG_PPC64
 extern struct op_powerpc_model op_model_rs64;
 extern struct op_powerpc_model op_model_power4;
 
+#else /* Otherwise, CONFIG_PPC32 */
+extern struct op_powerpc_model op_model_7450;
+#endif
+
+/* All the classic PPC parts use these */
 static inline unsigned int ctr_read(unsigned int i)
 {
         switch(i) {
@@ -78,10 +83,14 @@ static inline unsigned int ctr_read(unsigned int i)
                 return mfspr(SPRN_PMC5);
         case 5:
                 return mfspr(SPRN_PMC6);
+
+/* No PPC32 chip has more than 6 so far */
+#ifdef CONFIG_PPC64
         case 6:
                 return mfspr(SPRN_PMC7);
         case 7:
                 return mfspr(SPRN_PMC8);
+#endif
         default:
                 return 0;
         }
@@ -108,16 +117,20 @@ static inline void ctr_write(unsigned int i, unsigned int val)
         case 5:
                 mtspr(SPRN_PMC6, val);
                 break;
+
+/* No PPC32 chip has more than 6, yet */
+#ifdef CONFIG_PPC64
         case 6:
                 mtspr(SPRN_PMC7, val);
                 break;
         case 7:
                 mtspr(SPRN_PMC8, val);
                 break;
+#endif
         default:
                 break;
         }
 }
-#endif /* __powerpc64__ */
+#endif /* !CONFIG_FSL_BOOKE */
 
 #endif /* _ASM_POWERPC_OPROFILE_IMPL_H */
diff --git a/include/asm-powerpc/reg.h b/include/asm-powerpc/reg.h
index eb392d038ed7..a9a76857f5aa 100644
--- a/include/asm-powerpc/reg.h
+++ b/include/asm-powerpc/reg.h
@@ -443,12 +443,35 @@
 #define SPRN_SDAR       781
 
 #else /* 32-bit */
-#define SPRN_MMCR0      0x3B8   /* Monitor Mode Control Register 0 */
-#define SPRN_MMCR1      0x3BC   /* Monitor Mode Control Register 1 */
-#define SPRN_PMC1       0x3B9   /* Performance Counter Register 1 */
-#define SPRN_PMC2       0x3BA   /* Performance Counter Register 2 */
-#define SPRN_PMC3       0x3BD   /* Performance Counter Register 3 */
-#define SPRN_PMC4       0x3BE   /* Performance Counter Register 4 */
+#define SPRN_MMCR0      952     /* Monitor Mode Control Register 0 */
+#define   MMCR0_FC      0x80000000UL /* freeze counters */
+#define   MMCR0_FCS     0x40000000UL /* freeze in supervisor state */
+#define   MMCR0_FCP     0x20000000UL /* freeze in problem state */
+#define   MMCR0_FCM1    0x10000000UL /* freeze counters while MSR mark = 1 */
+#define   MMCR0_FCM0    0x08000000UL /* freeze counters while MSR mark = 0 */
+#define   MMCR0_PMXE    0x04000000UL /* performance monitor exception enable */
+#define   MMCR0_FCECE   0x02000000UL /* freeze ctrs on enabled cond or event */
+#define   MMCR0_TBEE    0x00400000UL /* time base exception enable */
+#define   MMCR0_PMC1CE  0x00008000UL /* PMC1 count enable*/
+#define   MMCR0_PMCnCE  0x00004000UL /* count enable for all but PMC 1*/
+#define   MMCR0_TRIGGER 0x00002000UL /* TRIGGER enable */
+#define   MMCR0_PMC1SEL 0x00001fc0UL /* PMC 1 Event */
+#define   MMCR0_PMC2SEL 0x0000003fUL /* PMC 2 Event */
+
+#define SPRN_MMCR1      956
+#define   MMCR1_PMC3SEL 0xf8000000UL /* PMC 3 Event */
+#define   MMCR1_PMC4SEL 0x07c00000UL /* PMC 4 Event */
+#define   MMCR1_PMC5SEL 0x003e0000UL /* PMC 5 Event */
+#define   MMCR1_PMC6SEL 0x0001f800UL /* PMC 6 Event */
+#define SPRN_MMCR2      944
+#define SPRN_PMC1       953     /* Performance Counter Register 1 */
+#define SPRN_PMC2       954     /* Performance Counter Register 2 */
+#define SPRN_PMC3       957     /* Performance Counter Register 3 */
+#define SPRN_PMC4       958     /* Performance Counter Register 4 */
+#define SPRN_PMC5       945     /* Performance Counter Register 5 */
+#define SPRN_PMC6       946     /* Performance Counter Register 6 */
+
+#define SPRN_SIAR       955     /* Sampled Instruction Address Register */
 
 /* Bit definitions for MMCR0 and PMC1 / PMC2. */
 #define MMCR0_PMC1_CYCLES       (1 << 7)
@@ -458,7 +481,6 @@
 #define MMCR0_PMC2_CYCLES       0x1
 #define MMCR0_PMC2_ITLB         0x7
 #define MMCR0_PMC2_LOADMISSTIME 0x5
-#define MMCR0_PMXE      (1 << 26)
 #endif
 
 /* Processor Version Register (PVR) field extraction */