[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 */