[apple/xnu.git] / osfmk / ppc / hw_perfmon.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
#ifndef _HW_PERFMON_H_
#define _HW_PERFMON_H_

#ifndef __ppc__
#error This file is only useful on PowerPC.
#endif

#define MAX_CPUPMC_COUNT  8

#define PMC_1    0
#define PMC_2    1
#define PMC_3    2
#define PMC_4    3
#define PMC_5    4
#define PMC_6    5
#define PMC_7    6
#define PMC_8    7

/* these actions can be combined and simultaneously performed with a single call to perfmon_control() */
typedef enum {
	PPC_PERFMON_CLEAR_COUNTERS =   0x0002,
	PPC_PERFMON_START_COUNTERS =   0x0004,
	PPC_PERFMON_STOP_COUNTERS  =   0x0008,
	PPC_PERFMON_READ_COUNTERS  =   0x0010,
	PPC_PERFMON_WRITE_COUNTERS =   0x0020
} perfmon_multi_action_t;

/* these actions can not be combined and each requires a separate call to perfmon_control() */
typedef enum {
	PPC_PERFMON_ENABLE =           0x00010000,
	PPC_PERFMON_DISABLE =          0x00020000,
	PPC_PERFMON_SET_EVENT =        0x00030000,
	PPC_PERFMON_SET_THRESHOLD =    0x00040000,
	PPC_PERFMON_SET_TBSEL =        0x00050000,
	PPC_PERFMON_SET_EVENT_FUNC =   0x00060000,
	PPC_PERFMON_ENABLE_PMI_BRKPT = 0x00070000
} perfmon_single_action_t;

/* used to select byte lane and speculative events (currently 970 only) */
typedef enum {                        /* SPECSEL[0:1]  TD_CP_DBGxSEL[0:1]  TTM3SEL[0:1]  TTM1SEL[0:1]  TTM0SEL[0:1] */
	PPC_PERFMON_FUNC_FPU =         0,   /*           00                  00            00            00            00 */
	PPC_PERFMON_FUNC_ISU =         1,   /*           00                  00            00            00            01 */
	PPC_PERFMON_FUNC_IFU =         2,   /*           00                  00            00            00            10 */
	PPC_PERFMON_FUNC_VMX =         3,   /*           00                  00            00            00            11 */
	PPC_PERFMON_FUNC_IDU =        64,   /*           00                  01            00            00            00 */
	PPC_PERFMON_FUNC_GPS =        76,   /*           00                  01            00            11            00 */
	PPC_PERFMON_FUNC_LSU0 =      128,   /*           00                  10            00            00            00 */
	PPC_PERFMON_FUNC_LSU1A =     192,   /*           00                  11            00            00            00 */
	PPC_PERFMON_FUNC_LSU1B =     240,   /*           00                  11            11            00            00 */
	PPC_PERFMON_FUNC_SPECA =     256,   /*           01                  00            00            00            00 */
	PPC_PERFMON_FUNC_SPECB =     512,   /*           10                  00            00            00            00 */
	PPC_PERFMON_FUNC_SPECC =     768,   /*           11                  00            00            00            00 */
} perfmon_functional_unit_t;

#ifdef MACH_KERNEL_PRIVATE
int perfmon_acquire_facility(task_t task);
int perfmon_release_facility(task_t task);

extern int perfmon_disable(thread_t thr_act);
extern int perfmon_init(void);
extern int perfmon_control(struct savearea *save);
extern int perfmon_handle_pmi(struct savearea *ssp);

/* perfmonFlags */
#define PERFMONFLAG_BREAKPOINT_FOR_PMI     0x1

#endif /* MACH_KERNEL_PRIVATE */

/* 
 * From user space:
 * 
 * int perfmon_control(thread_t thread, perfmon_action_t action, int pmc, u_int32_t val, u_int64_t *pmcs);
 * 
 * r3: thread
 * r4: action
 * r5: pmc
 * r6: event/threshold/tbsel/count
 * r7: pointer to space for PMC counts: uint64_t[MAX_CPUPMC_COUNT]
 *
 * perfmon_control(thread, PPC_PERFMON_CLEAR_COUNTERS, 0, 0, NULL);
 * perfmon_control(thread, PPC_PERFMON_START_COUNTERS, 0, 0, NULL);
 * perfmon_control(thread, PPC_PERFMON_STOP_COUNTERS, 0, 0, NULL);
 * perfmon_control(thread, PPC_PERFMON_READ_COUNTERS, 0, 0, uint64_t *pmcs);
 * perfmon_control(thread, PPC_PERFMON_WRITE_COUNTERS, 0, 0, uint64_t *pmcs);
 * perfmon_control(thread, PPC_PERFMON_ENABLE, 0, 0, NULL);
 * perfmon_control(thread, PPC_PERFMON_DISABLE, 0, 0, NULL);
 * perfmon_control(thread, PPC_PERFMON_SET_EVENT, int pmc, int event, NULL);
 * perfmon_control(thread, PPC_PERFMON_SET_THRESHOLD, 0, int threshold, NULL);
 * perfmon_control(thread, PPC_PERFMON_SET_TBSEL, 0, int tbsel, NULL);
 * perfmon_control(thread, PPC_PERFMON_SET_EVENT_FUNC, 0, perfmon_functional_unit_t func, NULL);
 * perfmon_control(thread, PPC_PERFMON_ENABLE_PMI_BRKPT, 0, boolean_t enable, NULL);
 *
 */

#endif /* _HW_PERFMON_H_ */
Commit	Line	Data
55e303ae A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
6601e61a	4	* @APPLE_LICENSE_HEADER_START@
55e303ae	5	*
6601e61a A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
8f6c56a5	11	*
6601e61a A	12	* This Original Code and all software distributed under the License are
6601e61a A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
6601e61a A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
8f6c56a5	19	*
6601e61a	20	* @APPLE_LICENSE_HEADER_END@
55e303ae A	21	*/
	22	#ifndef _HW_PERFMON_H_
	23	#define _HW_PERFMON_H_
	24
	25	#ifndef __ppc__
	26	#error This file is only useful on PowerPC.
	27	#endif
	28
	29	#define MAX_CPUPMC_COUNT 8
	30
	31	#define PMC_1 0
	32	#define PMC_2 1
	33	#define PMC_3 2
	34	#define PMC_4 3
	35	#define PMC_5 4
	36	#define PMC_6 5
	37	#define PMC_7 6
	38	#define PMC_8 7
	39
	40	/* these actions can be combined and simultaneously performed with a single call to perfmon_control() */
	41	typedef enum {
	42	PPC_PERFMON_CLEAR_COUNTERS = 0x0002,
	43	PPC_PERFMON_START_COUNTERS = 0x0004,
	44	PPC_PERFMON_STOP_COUNTERS = 0x0008,
	45	PPC_PERFMON_READ_COUNTERS = 0x0010,
	46	PPC_PERFMON_WRITE_COUNTERS = 0x0020
	47	} perfmon_multi_action_t;
	48
	49	/* these actions can not be combined and each requires a separate call to perfmon_control() */
	50	typedef enum {
	51	PPC_PERFMON_ENABLE = 0x00010000,
	52	PPC_PERFMON_DISABLE = 0x00020000,
	53	PPC_PERFMON_SET_EVENT = 0x00030000,
	54	PPC_PERFMON_SET_THRESHOLD = 0x00040000,
	55	PPC_PERFMON_SET_TBSEL = 0x00050000,
	56	PPC_PERFMON_SET_EVENT_FUNC = 0x00060000,
	57	PPC_PERFMON_ENABLE_PMI_BRKPT = 0x00070000
	58	} perfmon_single_action_t;
	59
	60	/* used to select byte lane and speculative events (currently 970 only) */
	61	typedef enum { /* SPECSEL[0:1] TD_CP_DBGxSEL[0:1] TTM3SEL[0:1] TTM1SEL[0:1] TTM0SEL[0:1] */
	62	PPC_PERFMON_FUNC_FPU = 0, /* 00 00 00 00 00 */
	63	PPC_PERFMON_FUNC_ISU = 1, /* 00 00 00 00 01 */
	64	PPC_PERFMON_FUNC_IFU = 2, /* 00 00 00 00 10 */
	65	PPC_PERFMON_FUNC_VMX = 3, /* 00 00 00 00 11 */
	66	PPC_PERFMON_FUNC_IDU = 64, /* 00 01 00 00 00 */
	67	PPC_PERFMON_FUNC_GPS = 76, /* 00 01 00 11 00 */
	68	PPC_PERFMON_FUNC_LSU0 = 128, /* 00 10 00 00 00 */
	69	PPC_PERFMON_FUNC_LSU1A = 192, /* 00 11 00 00 00 */
	70	PPC_PERFMON_FUNC_LSU1B = 240, /* 00 11 11 00 00 */
	71	PPC_PERFMON_FUNC_SPECA = 256, /* 01 00 00 00 00 */
	72	PPC_PERFMON_FUNC_SPECB = 512, /* 10 00 00 00 00 */
	73	PPC_PERFMON_FUNC_SPECC = 768, /* 11 00 00 00 00 */
	74	} perfmon_functional_unit_t;
	75
	76	#ifdef MACH_KERNEL_PRIVATE
	77	int perfmon_acquire_facility(task_t task);
	78	int perfmon_release_facility(task_t task);
	79
91447636	80	extern int perfmon_disable(thread_t thr_act);
55e303ae A	81	extern int perfmon_init(void);
	82	extern int perfmon_control(struct savearea *save);
	83	extern int perfmon_handle_pmi(struct savearea *ssp);
	84
	85	/* perfmonFlags */
	86	#define PERFMONFLAG_BREAKPOINT_FOR_PMI 0x1
	87
	88	#endif /* MACH_KERNEL_PRIVATE */
	89
	90	/*
	91	* From user space:
	92	*
	93	* int perfmon_control(thread_t thread, perfmon_action_t action, int pmc, u_int32_t val, u_int64_t *pmcs);
	94	*
	95	* r3: thread
	96	* r4: action
	97	* r5: pmc
	98	* r6: event/threshold/tbsel/count
	99	* r7: pointer to space for PMC counts: uint64_t[MAX_CPUPMC_COUNT]
	100	*
	101	* perfmon_control(thread, PPC_PERFMON_CLEAR_COUNTERS, 0, 0, NULL);
	102	* perfmon_control(thread, PPC_PERFMON_START_COUNTERS, 0, 0, NULL);
	103	* perfmon_control(thread, PPC_PERFMON_STOP_COUNTERS, 0, 0, NULL);
	104	* perfmon_control(thread, PPC_PERFMON_READ_COUNTERS, 0, 0, uint64_t *pmcs);
	105	* perfmon_control(thread, PPC_PERFMON_WRITE_COUNTERS, 0, 0, uint64_t *pmcs);
	106	* perfmon_control(thread, PPC_PERFMON_ENABLE, 0, 0, NULL);
	107	* perfmon_control(thread, PPC_PERFMON_DISABLE, 0, 0, NULL);
	108	* perfmon_control(thread, PPC_PERFMON_SET_EVENT, int pmc, int event, NULL);
	109	* perfmon_control(thread, PPC_PERFMON_SET_THRESHOLD, 0, int threshold, NULL);
	110	* perfmon_control(thread, PPC_PERFMON_SET_TBSEL, 0, int tbsel, NULL);
	111	* perfmon_control(thread, PPC_PERFMON_SET_EVENT_FUNC, 0, perfmon_functional_unit_t func, NULL);
	112	* perfmon_control(thread, PPC_PERFMON_ENABLE_PMI_BRKPT, 0, boolean_t enable, NULL);
	113	*
	114	*/
	115
	116	#endif /* _HW_PERFMON_H_ */