Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 880860e3 authored by Paul Mackerras's avatar Paul Mackerras
Browse files

perfcounters/powerpc: add support for POWER4 processors 



Impact: more hardware support

This adds the back-end for the PMU on the POWER4 and POWER4+ processors
(GP and GQ).  This is quite similar to the PPC970, with 8 PMCs, but has
fewer events than the PPC970.

Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent aabbaa60

arch/powerpc/kernel/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -94,7 +94,7 @@ obj-$(CONFIG_AUDIT) += audit.o 
obj64-$(CONFIG_AUDIT)		+= compat_audit.o



obj-$(CONFIG_DYNAMIC_FTRACE)	+= ftrace.o

obj-$(CONFIG_PERF_COUNTERS)	+= perf_counter.o ppc970-pmu.o \

obj-$(CONFIG_PERF_COUNTERS)	+= perf_counter.o power4-pmu.o ppc970-pmu.o \

				   power5-pmu.o power5+-pmu.o power6-pmu.o



obj-$(CONFIG_8XX_MINIMAL_FPEMU) += softemu8xx.o

arch/powerpc/kernel/perf_counter.c

+5 −0
Original line number Diff line number Diff line
@@ -824,6 +824,7 @@ void hw_perf_counter_setup(int cpu) 
	cpuhw->mmcr[0] = MMCR0_FC;

}



extern struct power_pmu power4_pmu;

extern struct power_pmu ppc970_pmu;

extern struct power_pmu power5_pmu;

extern struct power_pmu power5p_pmu;
@@ -841,6 +842,10 @@ static int init_perf_counters(void) 
	/* XXX should get this from cputable */

	pvr = mfspr(SPRN_PVR);

	switch (PVR_VER(pvr)) {

	case PV_POWER4:

	case PV_POWER4p:

		ppmu = &power4_pmu;

		break;

	case PV_970:

	case PV_970FX:

	case PV_970MP:

arch/powerpc/kernel/power4-pmu.c

0 → 100644
+557 −0
Original line number Diff line number Diff line 
/*

 * Performance counter support for POWER4 (GP) and POWER4+ (GQ) processors.

 *

 * Copyright 2009 Paul Mackerras, IBM Corporation.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 2 of the License, or (at your option) any later version.

 */

#include <linux/kernel.h>

#include <linux/perf_counter.h>

#include <asm/reg.h>



/*

 * Bits in event code for POWER4

 */

#define PM_PMC_SH	12	/* PMC number (1-based) for direct events */

#define PM_PMC_MSK	0xf

#define PM_UNIT_SH	8	/* TTMMUX number and setting - unit select */

#define PM_UNIT_MSK	0xf

#define PM_LOWER_SH	6

#define PM_LOWER_MSK	1

#define PM_LOWER_MSKS	0x40

#define PM_BYTE_SH	4	/* Byte number of event bus to use */

#define PM_BYTE_MSK	3

#define PM_PMCSEL_MSK	7



/*

 * Unit code values

 */

#define PM_FPU		1

#define PM_ISU1		2

#define PM_IFU		3

#define PM_IDU0		4

#define PM_ISU1_ALT	6

#define PM_ISU2		7

#define PM_IFU_ALT	8

#define PM_LSU0		9

#define PM_LSU1		0xc

#define PM_GPS		0xf



/*

 * Bits in MMCR0 for POWER4

 */

#define MMCR0_PMC1SEL_SH	8

#define MMCR0_PMC2SEL_SH	1

#define MMCR_PMCSEL_MSK		0x1f



/*

 * Bits in MMCR1 for POWER4

 */

#define MMCR1_TTM0SEL_SH	62

#define MMCR1_TTC0SEL_SH	61

#define MMCR1_TTM1SEL_SH	59

#define MMCR1_TTC1SEL_SH	58

#define MMCR1_TTM2SEL_SH	56

#define MMCR1_TTC2SEL_SH	55

#define MMCR1_TTM3SEL_SH	53

#define MMCR1_TTC3SEL_SH	52

#define MMCR1_TTMSEL_MSK	3

#define MMCR1_TD_CP_DBG0SEL_SH	50

#define MMCR1_TD_CP_DBG1SEL_SH	48

#define MMCR1_TD_CP_DBG2SEL_SH	46

#define MMCR1_TD_CP_DBG3SEL_SH	44

#define MMCR1_DEBUG0SEL_SH	43

#define MMCR1_DEBUG1SEL_SH	42

#define MMCR1_DEBUG2SEL_SH	41

#define MMCR1_DEBUG3SEL_SH	40

#define MMCR1_PMC1_ADDER_SEL_SH	39

#define MMCR1_PMC2_ADDER_SEL_SH	38

#define MMCR1_PMC6_ADDER_SEL_SH	37

#define MMCR1_PMC5_ADDER_SEL_SH	36

#define MMCR1_PMC8_ADDER_SEL_SH	35

#define MMCR1_PMC7_ADDER_SEL_SH	34

#define MMCR1_PMC3_ADDER_SEL_SH	33

#define MMCR1_PMC4_ADDER_SEL_SH	32

#define MMCR1_PMC3SEL_SH	27

#define MMCR1_PMC4SEL_SH	22

#define MMCR1_PMC5SEL_SH	17

#define MMCR1_PMC6SEL_SH	12

#define MMCR1_PMC7SEL_SH	7

#define MMCR1_PMC8SEL_SH	2	/* note bit 0 is in MMCRA for GP */



static short mmcr1_adder_bits[8] = {

	MMCR1_PMC1_ADDER_SEL_SH,

	MMCR1_PMC2_ADDER_SEL_SH,

	MMCR1_PMC3_ADDER_SEL_SH,

	MMCR1_PMC4_ADDER_SEL_SH,

	MMCR1_PMC5_ADDER_SEL_SH,

	MMCR1_PMC6_ADDER_SEL_SH,

	MMCR1_PMC7_ADDER_SEL_SH,

	MMCR1_PMC8_ADDER_SEL_SH

};



/*

 * Bits in MMCRA

 */

#define MMCRA_PMC8SEL0_SH	17	/* PMC8SEL bit 0 for GP */



/*

 * Layout of constraint bits:

 * 6666555555555544444444443333333333222222222211111111110000000000

 * 3210987654321098765432109876543210987654321098765432109876543210

 *        |[  >[  >[   >|||[  >[  ><  ><  ><  ><  ><><><><><><><><>

 *        | UC1 UC2 UC3 ||| PS1 PS2 B0  B1  B2  B3 P1P2P3P4P5P6P7P8

 * 	  \SMPL	        ||\TTC3SEL

 * 		        |\TTC_IFU_SEL

 * 		        \TTM2SEL0

 *

 * SMPL - SAMPLE_ENABLE constraint

 *     56: SAMPLE_ENABLE value 0x0100_0000_0000_0000

 *

 * UC1 - unit constraint 1: can't have all three of FPU/ISU1/IDU0|ISU2

 *     55: UC1 error 0x0080_0000_0000_0000

 *     54: FPU events needed 0x0040_0000_0000_0000

 *     53: ISU1 events needed 0x0020_0000_0000_0000

 *     52: IDU0|ISU2 events needed 0x0010_0000_0000_0000

 *

 * UC2 - unit constraint 2: can't have all three of FPU/IFU/LSU0

 *     51: UC2 error 0x0008_0000_0000_0000

 *     50: FPU events needed 0x0004_0000_0000_0000

 *     49: IFU events needed 0x0002_0000_0000_0000

 *     48: LSU0 events needed 0x0001_0000_0000_0000

 *

 * UC3 - unit constraint 3: can't have all four of LSU0/IFU/IDU0|ISU2/ISU1

 *     47: UC3 error 0x8000_0000_0000

 *     46: LSU0 events needed 0x4000_0000_0000

 *     45: IFU events needed 0x2000_0000_0000

 *     44: IDU0|ISU2 events needed 0x1000_0000_0000

 *     43: ISU1 events needed 0x0800_0000_0000

 *

 * TTM2SEL0

 *     42: 0 = IDU0 events needed

 *     	   1 = ISU2 events needed 0x0400_0000_0000

 *

 * TTC_IFU_SEL

 *     41: 0 = IFU.U events needed

 *     	   1 = IFU.L events needed 0x0200_0000_0000

 *

 * TTC3SEL

 *     40: 0 = LSU1.U events needed

 *     	   1 = LSU1.L events needed 0x0100_0000_0000

 *

 * PS1

 *     39: PS1 error 0x0080_0000_0000

 *     36-38: count of events needing PMC1/2/5/6 0x0070_0000_0000

 *

 * PS2

 *     35: PS2 error 0x0008_0000_0000

 *     32-34: count of events needing PMC3/4/7/8 0x0007_0000_0000

 *

 * B0

 *     28-31: Byte 0 event source 0xf000_0000

 *     	   1 = FPU

 * 	   2 = ISU1

 * 	   3 = IFU

 * 	   4 = IDU0

 * 	   7 = ISU2

 * 	   9 = LSU0

 * 	   c = LSU1

 * 	   f = GPS

 *

 * B1, B2, B3

 *     24-27, 20-23, 16-19: Byte 1, 2, 3 event sources

 *

 * P8

 *     15: P8 error 0x8000

 *     14-15: Count of events needing PMC8

 *

 * P1..P7

 *     0-13: Count of events needing PMC1..PMC7

 *

 * Note: this doesn't allow events using IFU.U to be combined with events

 * using IFU.L, though that is feasible (using TTM0 and TTM2).  However

 * there are no listed events for IFU.L (they are debug events not

 * verified for performance monitoring) so this shouldn't cause a

 * problem.

 */



static struct unitinfo {

	u64	value, mask;

	int	unit;

	int	lowerbit;

} p4_unitinfo[16] = {

	[PM_FPU]  = { 0x44000000000000ull, 0x88000000000000ull, PM_FPU, 0 },

	[PM_ISU1] = { 0x20080000000000ull, 0x88000000000000ull, PM_ISU1, 0 },

	[PM_ISU1_ALT] =

		    { 0x20080000000000ull, 0x88000000000000ull, PM_ISU1, 0 },

	[PM_IFU]  = { 0x02200000000000ull, 0x08820000000000ull, PM_IFU, 41 },

	[PM_IFU_ALT] =

		    { 0x02200000000000ull, 0x08820000000000ull, PM_IFU, 41 },

	[PM_IDU0] = { 0x10100000000000ull, 0x80840000000000ull, PM_IDU0, 1 },

	[PM_ISU2] = { 0x10140000000000ull, 0x80840000000000ull, PM_ISU2, 0 },

	[PM_LSU0] = { 0x01400000000000ull, 0x08800000000000ull, PM_LSU0, 0 },

	[PM_LSU1] = { 0x00000000000000ull, 0x00010000000000ull, PM_LSU1, 40 },

	[PM_GPS]  = { 0x00000000000000ull, 0x00000000000000ull, PM_GPS, 0 }

};



static unsigned char direct_marked_event[8] = {

	(1<<2) | (1<<3),	/* PMC1: PM_MRK_GRP_DISP, PM_MRK_ST_CMPL */

	(1<<3) | (1<<5),	/* PMC2: PM_THRESH_TIMEO, PM_MRK_BRU_FIN */

	(1<<3),			/* PMC3: PM_MRK_ST_CMPL_INT */

	(1<<4) | (1<<5),	/* PMC4: PM_MRK_GRP_CMPL, PM_MRK_CRU_FIN */

	(1<<4) | (1<<5),	/* PMC5: PM_MRK_GRP_TIMEO */

	(1<<3) | (1<<4) | (1<<5),

		/* PMC6: PM_MRK_ST_GPS, PM_MRK_FXU_FIN, PM_MRK_GRP_ISSUED */

	(1<<4) | (1<<5),	/* PMC7: PM_MRK_FPU_FIN, PM_MRK_INST_FIN */

	(1<<4),			/* PMC8: PM_MRK_LSU_FIN */

};



/*

 * Returns 1 if event counts things relating to marked instructions

 * and thus needs the MMCRA_SAMPLE_ENABLE bit set, or 0 if not.

 */

static int p4_marked_instr_event(unsigned int event)

{

	int pmc, psel, unit, byte, bit;

	unsigned int mask;



	pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;

	psel = event & PM_PMCSEL_MSK;

	if (pmc) {

		if (direct_marked_event[pmc - 1] & (1 << psel))

			return 1;

		if (psel == 0)		/* add events */

			bit = (pmc <= 4)? pmc - 1: 8 - pmc;

		else if (psel == 6)	/* decode events */

			bit = 4;

		else

			return 0;

	} else

		bit = psel;



	byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK;

	unit = (event >> PM_UNIT_SH) & PM_UNIT_MSK;

	mask = 0;

	switch (unit) {

	case PM_LSU1:

		if (event & PM_LOWER_MSKS)

			mask = 1 << 28;		/* byte 7 bit 4 */

		else

			mask = 6 << 24;		/* byte 3 bits 1 and 2 */

		break;

	case PM_LSU0:

		/* byte 3, bit 3; byte 2 bits 0,2,3,4,5; byte 1 */

		mask = 0x083dff00;

	}

	return (mask >> (byte * 8 + bit)) & 1;

}



static int p4_get_constraint(unsigned int event, u64 *maskp, u64 *valp)

{

	int pmc, byte, unit, lower, sh;

	u64 mask = 0, value = 0;

	int grp = -1;



	pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;

	if (pmc) {

		if (pmc > 8)

			return -1;

		sh = (pmc - 1) * 2;

		mask |= 2 << sh;

		value |= 1 << sh;

		grp = ((pmc - 1) >> 1) & 1;

	}

	unit = (event >> PM_UNIT_SH) & PM_UNIT_MSK;

	byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK;

	if (unit) {

		lower = (event >> PM_LOWER_SH) & PM_LOWER_MSK;



		/*

		 * Bus events on bytes 0 and 2 can be counted

		 * on PMC1/2/5/6; bytes 1 and 3 on PMC3/4/7/8.

		 */

		if (!pmc)

			grp = byte & 1;



		if (!p4_unitinfo[unit].unit)

			return -1;

		mask  |= p4_unitinfo[unit].mask;

		value |= p4_unitinfo[unit].value;

		sh = p4_unitinfo[unit].lowerbit;

		if (sh > 1)

			value |= (u64)lower << sh;

		else if (lower != sh)

			return -1;

		unit = p4_unitinfo[unit].unit;



		/* Set byte lane select field */

		mask  |= 0xfULL << (28 - 4 * byte);

		value |= (u64)unit << (28 - 4 * byte);

	}

	if (grp == 0) {

		/* increment PMC1/2/5/6 field */

		mask  |= 0x8000000000ull;

		value |= 0x1000000000ull;

	} else {

		/* increment PMC3/4/7/8 field */

		mask  |= 0x800000000ull;

		value |= 0x100000000ull;

	}



	/* Marked instruction events need sample_enable set */

	if (p4_marked_instr_event(event)) {

		mask  |= 1ull << 56;

		value |= 1ull << 56;

	}



	/* PMCSEL=6 decode events on byte 2 need sample_enable clear */

	if (pmc && (event & PM_PMCSEL_MSK) == 6 && byte == 2)

		mask  |= 1ull << 56;



	*maskp = mask;

	*valp = value;

	return 0;

}



static unsigned int ppc_inst_cmpl[] = {

	0x1001, 0x4001, 0x6001, 0x7001, 0x8001

};



static int p4_get_alternatives(unsigned int event, unsigned int alt[])

{

	int i, j, na;



	alt[0] = event;

	na = 1;



	/* 2 possibilities for PM_GRP_DISP_REJECT */

	if (event == 0x8003 || event == 0x0224) {

		alt[1] = event ^ (0x8003 ^ 0x0224);

		return 2;

	}



	/* 2 possibilities for PM_ST_MISS_L1 */

	if (event == 0x0c13 || event == 0x0c23) {

		alt[1] = event ^ (0x0c13 ^ 0x0c23);

		return 2;

	}



	/* several possibilities for PM_INST_CMPL */

	for (i = 0; i < ARRAY_SIZE(ppc_inst_cmpl); ++i) {

		if (event == ppc_inst_cmpl[i]) {

			for (j = 0; j < ARRAY_SIZE(ppc_inst_cmpl); ++j)

				if (j != i)

					alt[na++] = ppc_inst_cmpl[j];

			break;

		}

	}



	return na;

}



static int p4_compute_mmcr(unsigned int event[], int n_ev,

			   unsigned int hwc[], u64 mmcr[])

{

	u64 mmcr0 = 0, mmcr1 = 0, mmcra = 0;

	unsigned int pmc, unit, byte, psel, lower;

	unsigned int ttm, grp;

	unsigned int pmc_inuse = 0;

	unsigned int pmc_grp_use[2];

	unsigned char busbyte[4];

	unsigned char unituse[16];

	unsigned int unitlower = 0;

	int i;



	if (n_ev > 8)

		return -1;



	/* First pass to count resource use */

	pmc_grp_use[0] = pmc_grp_use[1] = 0;

	memset(busbyte, 0, sizeof(busbyte));

	memset(unituse, 0, sizeof(unituse));

	for (i = 0; i < n_ev; ++i) {

		pmc = (event[i] >> PM_PMC_SH) & PM_PMC_MSK;

		if (pmc) {

			if (pmc_inuse & (1 << (pmc - 1)))

				return -1;

			pmc_inuse |= 1 << (pmc - 1);

			/* count 1/2/5/6 vs 3/4/7/8 use */

			++pmc_grp_use[((pmc - 1) >> 1) & 1];

		}

		unit = (event[i] >> PM_UNIT_SH) & PM_UNIT_MSK;

		byte = (event[i] >> PM_BYTE_SH) & PM_BYTE_MSK;

		lower = (event[i] >> PM_LOWER_SH) & PM_LOWER_MSK;

		if (unit) {

			if (!pmc)

				++pmc_grp_use[byte & 1];

			if (unit == 6 || unit == 8)

				/* map alt ISU1/IFU codes: 6->2, 8->3 */

				unit = (unit >> 1) - 1;

			if (busbyte[byte] && busbyte[byte] != unit)

				return -1;

			busbyte[byte] = unit;

			lower <<= unit;

			if (unituse[unit] && lower != (unitlower & lower))

				return -1;

			unituse[unit] = 1;

			unitlower |= lower;

		}

	}

	if (pmc_grp_use[0] > 4 || pmc_grp_use[1] > 4)

		return -1;



	/*

	 * Assign resources and set multiplexer selects.

	 *

	 * Units 1,2,3 are on TTM0, 4,6,7 on TTM1, 8,10 on TTM2.

	 * Each TTMx can only select one unit, but since

	 * units 2 and 6 are both ISU1, and 3 and 8 are both IFU,

	 * we have some choices.

	 */

	if (unituse[2] & (unituse[1] | (unituse[3] & unituse[9]))) {

		unituse[6] = 1;		/* Move 2 to 6 */

		unituse[2] = 0;

	}

	if (unituse[3] & (unituse[1] | unituse[2])) {

		unituse[8] = 1;		/* Move 3 to 8 */

		unituse[3] = 0;

		unitlower = (unitlower & ~8) | ((unitlower & 8) << 5);

	}

	/* Check only one unit per TTMx */

	if (unituse[1] + unituse[2] + unituse[3] > 1 ||

	    unituse[4] + unituse[6] + unituse[7] > 1 ||

	    unituse[8] + unituse[9] > 1 ||

	    (unituse[5] | unituse[10] | unituse[11] |

	     unituse[13] | unituse[14]))

		return -1;



	/* Set TTMxSEL fields.  Note, units 1-3 => TTM0SEL codes 0-2 */

	mmcr1 |= (u64)(unituse[3] * 2 + unituse[2]) << MMCR1_TTM0SEL_SH;

	mmcr1 |= (u64)(unituse[7] * 3 + unituse[6] * 2) << MMCR1_TTM1SEL_SH;

	mmcr1 |= (u64)unituse[9] << MMCR1_TTM2SEL_SH;



	/* Set TTCxSEL fields. */

	if (unitlower & 0xe)

		mmcr1 |= 1ull << MMCR1_TTC0SEL_SH;

	if (unitlower & 0xf0)

		mmcr1 |= 1ull << MMCR1_TTC1SEL_SH;

	if (unitlower & 0xf00)

		mmcr1 |= 1ull << MMCR1_TTC2SEL_SH;

	if (unitlower & 0x7000)

		mmcr1 |= 1ull << MMCR1_TTC3SEL_SH;



	/* Set byte lane select fields. */

	for (byte = 0; byte < 4; ++byte) {

		unit = busbyte[byte];

		if (!unit)

			continue;

		if (unit == 0xf) {

			/* special case for GPS */

			mmcr1 |= 1ull << (MMCR1_DEBUG0SEL_SH - byte);

		} else {

			if (!unituse[unit])

				ttm = unit - 1;		/* 2->1, 3->2 */

			else

				ttm = unit >> 2;

			mmcr1 |= (u64)ttm << (MMCR1_TD_CP_DBG0SEL_SH - 2*byte);

		}

	}



	/* Second pass: assign PMCs, set PMCxSEL and PMCx_ADDER_SEL fields */

	for (i = 0; i < n_ev; ++i) {

		pmc = (event[i] >> PM_PMC_SH) & PM_PMC_MSK;

		unit = (event[i] >> PM_UNIT_SH) & PM_UNIT_MSK;

		byte = (event[i] >> PM_BYTE_SH) & PM_BYTE_MSK;

		psel = event[i] & PM_PMCSEL_MSK;

		if (!pmc) {

			/* Bus event or 00xxx direct event (off or cycles) */

			if (unit)

				psel |= 0x10 | ((byte & 2) << 2);

			for (pmc = 0; pmc < 8; ++pmc) {

				if (pmc_inuse & (1 << pmc))

					continue;

				grp = (pmc >> 1) & 1;

				if (unit) {

					if (grp == (byte & 1))

						break;

				} else if (pmc_grp_use[grp] < 4) {

					++pmc_grp_use[grp];

					break;

				}

			}

			pmc_inuse |= 1 << pmc;

		} else {

			/* Direct event */

			--pmc;

			if (psel == 0 && (byte & 2))

				/* add events on higher-numbered bus */

				mmcr1 |= 1ull << mmcr1_adder_bits[pmc];

			else if (psel == 6 && byte == 3)

				/* seem to need to set sample_enable here */

				mmcra |= MMCRA_SAMPLE_ENABLE;

			psel |= 8;

		}

		if (pmc <= 1)

			mmcr0 |= psel << (MMCR0_PMC1SEL_SH - 7 * pmc);

		else

			mmcr1 |= psel << (MMCR1_PMC3SEL_SH - 5 * (pmc - 2));

		if (pmc == 7)	/* PMC8 */

			mmcra |= (psel & 1) << MMCRA_PMC8SEL0_SH;

		hwc[i] = pmc;

		if (p4_marked_instr_event(event[i]))

			mmcra |= MMCRA_SAMPLE_ENABLE;

	}



	if (pmc_inuse & 1)

		mmcr0 |= MMCR0_PMC1CE;

	if (pmc_inuse & 0xfe)

		mmcr0 |= MMCR0_PMCjCE;



	mmcra |= 0x2000;	/* mark only one IOP per PPC instruction */



	/* Return MMCRx values */

	mmcr[0] = mmcr0;

	mmcr[1] = mmcr1;

	mmcr[2] = mmcra;

	return 0;

}



static void p4_disable_pmc(unsigned int pmc, u64 mmcr[])

{

	/*

	 * Setting the PMCxSEL field to 0 disables PMC x.

	 * (Note that pmc is 0-based here, not 1-based.)

	 */

	if (pmc <= 1) {

		mmcr[0] &= ~(0x1fUL << (MMCR0_PMC1SEL_SH - 7 * pmc));

	} else {

		mmcr[1] &= ~(0x1fUL << (MMCR1_PMC3SEL_SH - 5 * (pmc - 2)));

		if (pmc == 7)

			mmcr[2] &= ~(1UL << MMCRA_PMC8SEL0_SH);

	}

}



static int p4_generic_events[] = {

	[PERF_COUNT_CPU_CYCLES] = 7,

	[PERF_COUNT_INSTRUCTIONS] = 0x1001,

	[PERF_COUNT_CACHE_REFERENCES] = 0x8c10,		/* PM_LD_REF_L1 */

	[PERF_COUNT_CACHE_MISSES] = 0x3c10,		/* PM_LD_MISS_L1 */

	[PERF_COUNT_BRANCH_INSTRUCTIONS] = 0x330,	/* PM_BR_ISSUED */

	[PERF_COUNT_BRANCH_MISSES] = 0x331,		/* PM_BR_MPRED_CR */

};



struct power_pmu power4_pmu = {

	.n_counter = 8,

	.max_alternatives = 5,

	.add_fields = 0x0000001100005555ull,

	.test_adder = 0x0011083300000000ull,

	.compute_mmcr = p4_compute_mmcr,

	.get_constraint = p4_get_constraint,

	.get_alternatives = p4_get_alternatives,

	.disable_pmc = p4_disable_pmc,

	.n_generic = ARRAY_SIZE(p4_generic_events),

	.generic_events = p4_generic_events,

};