1/*
  2 * Copyright (C) 2004 Anton Blanchard <anton@au.ibm.com>, IBM
  3 *
  4 * Based on alpha version.
  5 *
  6 * This program is free software; you can redistribute it and/or
  7 * modify it under the terms of the GNU General Public License
  8 * as published by the Free Software Foundation; either version
  9 * 2 of the License, or (at your option) any later version.
 10 */
 11
 12#ifndef _ASM_POWERPC_OPROFILE_IMPL_H
 13#define _ASM_POWERPC_OPROFILE_IMPL_H
 14#ifdef __KERNEL__
 15
 16#define OP_MAX_COUNTER 8
 17
 18/* Per-counter configuration as set via oprofilefs.  */
 19struct op_counter_config {
 20	unsigned long enabled;
 21	unsigned long event;
 22	unsigned long count;
 23	/* Classic doesn't support per-counter user/kernel selection */
 24	unsigned long kernel;
 25	unsigned long user;
 26	unsigned long unit_mask;
 27};
 28
 29/* System-wide configuration as set via oprofilefs.  */
 30struct op_system_config {
 31#ifdef CONFIG_PPC64
 32	unsigned long mmcr0;
 33	unsigned long mmcr1;
 34	unsigned long mmcra;
 35#ifdef CONFIG_OPROFILE_CELL
 36	/* Register for oprofile user tool to check cell kernel profiling
 37	 * support.
 38	 */
 39	unsigned long cell_support;
 40#endif
 41#endif
 42	unsigned long enable_kernel;
 43	unsigned long enable_user;
 44};
 45
 46/* Per-arch configuration */
 47struct op_powerpc_model {
 48	int (*reg_setup) (struct op_counter_config *,
 49			   struct op_system_config *,
 50			   int num_counters);
 51	int  (*cpu_setup) (struct op_counter_config *);
 52	int  (*start) (struct op_counter_config *);
 53	int  (*global_start) (struct op_counter_config *);
 54	void (*stop) (void);
 55	void (*global_stop) (void);
 56	int (*sync_start)(void);
 57	int (*sync_stop)(void);
 58	void (*handle_interrupt) (struct pt_regs *,
 59				  struct op_counter_config *);
 60	int num_counters;
 61};
 62
 63extern struct op_powerpc_model op_model_fsl_emb;
 64extern struct op_powerpc_model op_model_power4;
 65extern struct op_powerpc_model op_model_7450;
 66extern struct op_powerpc_model op_model_cell;
 67extern struct op_powerpc_model op_model_pa6t;
 68
 69
 70/* All the classic PPC parts use these */
 71static inline unsigned int classic_ctr_read(unsigned int i)
 72{
 73	switch(i) {
 74	case 0:
 75		return mfspr(SPRN_PMC1);
 76	case 1:
 77		return mfspr(SPRN_PMC2);
 78	case 2:
 79		return mfspr(SPRN_PMC3);
 80	case 3:
 81		return mfspr(SPRN_PMC4);
 82	case 4:
 83		return mfspr(SPRN_PMC5);
 84	case 5:
 85		return mfspr(SPRN_PMC6);
 86
 87/* No PPC32 chip has more than 6 so far */
 88#ifdef CONFIG_PPC64
 89	case 6:
 90		return mfspr(SPRN_PMC7);
 91	case 7:
 92		return mfspr(SPRN_PMC8);
 93#endif
 94	default:
 95		return 0;
 96	}
 97}
 98
 99static inline void classic_ctr_write(unsigned int i, unsigned int val)
100{
101	switch(i) {
102	case 0:
103		mtspr(SPRN_PMC1, val);
104		break;
105	case 1:
106		mtspr(SPRN_PMC2, val);
107		break;
108	case 2:
109		mtspr(SPRN_PMC3, val);
110		break;
111	case 3:
112		mtspr(SPRN_PMC4, val);
113		break;
114	case 4:
115		mtspr(SPRN_PMC5, val);
116		break;
117	case 5:
118		mtspr(SPRN_PMC6, val);
119		break;
120
121/* No PPC32 chip has more than 6, yet */
122#ifdef CONFIG_PPC64
123	case 6:
124		mtspr(SPRN_PMC7, val);
125		break;
126	case 7:
127		mtspr(SPRN_PMC8, val);
128		break;
129#endif
130	default:
131		break;
132	}
133}
134
135
136extern void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth);
137
138#endif /* __KERNEL__ */
139#endif /* _ASM_POWERPC_OPROFILE_IMPL_H */