1 files changed, 135 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/oprofile_impl.h b/arch/powerpc/include/asm/oprofile_impl.h
new file mode 100644
index 000000000..2a166c297
--- /dev/null
+++ b/arch/powerpc/include/asm/oprofile_impl.h
@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
+ *
+ * Based on alpha version.
+ */
+
+#ifndef _ASM_POWERPC_OPROFILE_IMPL_H
+#define _ASM_POWERPC_OPROFILE_IMPL_H
+#ifdef __KERNEL__
+
+#define OP_MAX_COUNTER 8
+
+/* Per-counter configuration as set via oprofilefs.  */
+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;
+	unsigned long user;
+	unsigned long unit_mask;
+};
+
+/* System-wide configuration as set via oprofilefs.  */
+struct op_system_config {
+#ifdef CONFIG_PPC64
+	unsigned long mmcr0;
+	unsigned long mmcr1;
+	unsigned long mmcra;
+#ifdef CONFIG_OPROFILE_CELL
+	/* Register for oprofile user tool to check cell kernel profiling
+	 * support.
+	 */
+	unsigned long cell_support;
+#endif
+#endif
+	unsigned long enable_kernel;
+	unsigned long enable_user;
+};
+
+/* Per-arch configuration */
+struct op_powerpc_model {
+	int (*reg_setup) (struct op_counter_config *,
+			   struct op_system_config *,
+			   int num_counters);
+	int  (*cpu_setup) (struct op_counter_config *);
+	int  (*start) (struct op_counter_config *);
+	int  (*global_start) (struct op_counter_config *);
+	void (*stop) (void);
+	void (*global_stop) (void);
+	int (*sync_start)(void);
+	int (*sync_stop)(void);
+	void (*handle_interrupt) (struct pt_regs *,
+				  struct op_counter_config *);
+	int num_counters;
+};
+
+extern struct op_powerpc_model op_model_fsl_emb;
+extern struct op_powerpc_model op_model_power4;
+extern struct op_powerpc_model op_model_7450;
+extern struct op_powerpc_model op_model_cell;
+extern struct op_powerpc_model op_model_pa6t;
+
+
+/* All the classic PPC parts use these */
+static inline unsigned int classic_ctr_read(unsigned int i)
+{
+	switch(i) {
+	case 0:
+		return mfspr(SPRN_PMC1);
+	case 1:
+		return mfspr(SPRN_PMC2);
+	case 2:
+		return mfspr(SPRN_PMC3);
+	case 3:
+		return mfspr(SPRN_PMC4);
+	case 4:
+		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;
+	}
+}
+
+static inline void classic_ctr_write(unsigned int i, unsigned int val)
+{
+	switch(i) {
+	case 0:
+		mtspr(SPRN_PMC1, val);
+		break;
+	case 1:
+		mtspr(SPRN_PMC2, val);
+		break;
+	case 2:
+		mtspr(SPRN_PMC3, val);
+		break;
+	case 3:
+		mtspr(SPRN_PMC4, val);
+		break;
+	case 4:
+		mtspr(SPRN_PMC5, val);
+		break;
+	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;
+	}
+}
+
+
+extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_POWERPC_OPROFILE_IMPL_H */