![Michael Ellerman](/assets/img/avatar_default.png)
In perf_ip_adjust() we potentially use the MMCRA[SLOT] field to adjust the reported IP of a sampled instruction. Currently the logic is written so that if the backend does NOT have the PPMU_ALT_SIPR flag set then we assume MMCRA[SLOT] exists. However on power8 we do not want to set ALT_SIPR (it's in a third location), and we also do not have MMCRA[SLOT]. So add a new flag which only indicates whether MMCRA[SLOT] exists. Naively we'd set it on everything except power6/7, because they set ALT_SIPR, and we've reversed the polarity of the flag. But it's more complicated than that. mpc7450 is 32-bit, and uses its own version of perf_ip_adjust() which doesn't use MMCRA[SLOT], so it doesn't need the new flag set and the behaviour is unchanged. PPC970 (and I assume power4) don't have MMCRA[SLOT], so shouldn't have the new flag set. This is a behaviour change on those cpus, though we were probably getting lucky and the bits in question were 0. power5 and power5+ set the new flag, behaviour unchanged. power6 & power7 do not set the new flag, behaviour unchanged. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
691 lines
18 KiB
C
691 lines
18 KiB
C
/*
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* Performance counter support for POWER5+/++ (not POWER5) processors.
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*
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* Copyright 2009 Paul Mackerras, IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/perf_event.h>
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#include <linux/string.h>
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#include <asm/reg.h>
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#include <asm/cputable.h>
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/*
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* Bits in event code for POWER5+ (POWER5 GS) and POWER5++ (POWER5 GS DD3)
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*/
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#define PM_PMC_SH 20 /* PMC number (1-based) for direct events */
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#define PM_PMC_MSK 0xf
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#define PM_PMC_MSKS (PM_PMC_MSK << PM_PMC_SH)
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#define PM_UNIT_SH 16 /* TTMMUX number and setting - unit select */
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#define PM_UNIT_MSK 0xf
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#define PM_BYTE_SH 12 /* Byte number of event bus to use */
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#define PM_BYTE_MSK 7
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#define PM_GRS_SH 8 /* Storage subsystem mux select */
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#define PM_GRS_MSK 7
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#define PM_BUSEVENT_MSK 0x80 /* Set if event uses event bus */
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#define PM_PMCSEL_MSK 0x7f
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/* Values in PM_UNIT field */
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#define PM_FPU 0
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#define PM_ISU0 1
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#define PM_IFU 2
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#define PM_ISU1 3
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#define PM_IDU 4
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#define PM_ISU0_ALT 6
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#define PM_GRS 7
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#define PM_LSU0 8
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#define PM_LSU1 0xc
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#define PM_LASTUNIT 0xc
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/*
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* Bits in MMCR1 for POWER5+
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*/
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#define MMCR1_TTM0SEL_SH 62
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#define MMCR1_TTM1SEL_SH 60
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#define MMCR1_TTM2SEL_SH 58
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#define MMCR1_TTM3SEL_SH 56
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#define MMCR1_TTMSEL_MSK 3
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#define MMCR1_TD_CP_DBG0SEL_SH 54
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#define MMCR1_TD_CP_DBG1SEL_SH 52
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#define MMCR1_TD_CP_DBG2SEL_SH 50
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#define MMCR1_TD_CP_DBG3SEL_SH 48
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#define MMCR1_GRS_L2SEL_SH 46
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#define MMCR1_GRS_L2SEL_MSK 3
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#define MMCR1_GRS_L3SEL_SH 44
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#define MMCR1_GRS_L3SEL_MSK 3
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#define MMCR1_GRS_MCSEL_SH 41
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#define MMCR1_GRS_MCSEL_MSK 7
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#define MMCR1_GRS_FABSEL_SH 39
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#define MMCR1_GRS_FABSEL_MSK 3
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#define MMCR1_PMC1_ADDER_SEL_SH 35
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#define MMCR1_PMC2_ADDER_SEL_SH 34
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#define MMCR1_PMC3_ADDER_SEL_SH 33
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#define MMCR1_PMC4_ADDER_SEL_SH 32
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#define MMCR1_PMC1SEL_SH 25
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#define MMCR1_PMC2SEL_SH 17
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#define MMCR1_PMC3SEL_SH 9
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#define MMCR1_PMC4SEL_SH 1
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#define MMCR1_PMCSEL_SH(n) (MMCR1_PMC1SEL_SH - (n) * 8)
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#define MMCR1_PMCSEL_MSK 0x7f
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/*
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* Layout of constraint bits:
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* 6666555555555544444444443333333333222222222211111111110000000000
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* 3210987654321098765432109876543210987654321098765432109876543210
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* [ ><><>< ><> <><>[ > < >< >< >< ><><><><><><>
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* NC G0G1G2 G3 T0T1 UC B0 B1 B2 B3 P6P5P4P3P2P1
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*
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* NC - number of counters
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* 51: NC error 0x0008_0000_0000_0000
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* 48-50: number of events needing PMC1-4 0x0007_0000_0000_0000
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*
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* G0..G3 - GRS mux constraints
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* 46-47: GRS_L2SEL value
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* 44-45: GRS_L3SEL value
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* 41-44: GRS_MCSEL value
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* 39-40: GRS_FABSEL value
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* Note that these match up with their bit positions in MMCR1
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*
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* T0 - TTM0 constraint
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* 36-37: TTM0SEL value (0=FPU, 2=IFU, 3=ISU1) 0x30_0000_0000
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*
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* T1 - TTM1 constraint
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* 34-35: TTM1SEL value (0=IDU, 3=GRS) 0x0c_0000_0000
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*
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* UC - unit constraint: can't have all three of FPU|IFU|ISU1, ISU0, IDU|GRS
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* 33: UC3 error 0x02_0000_0000
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* 32: FPU|IFU|ISU1 events needed 0x01_0000_0000
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* 31: ISU0 events needed 0x01_8000_0000
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* 30: IDU|GRS events needed 0x00_4000_0000
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*
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* B0
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* 24-27: Byte 0 event source 0x0f00_0000
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* Encoding as for the event code
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*
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* B1, B2, B3
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* 20-23, 16-19, 12-15: Byte 1, 2, 3 event sources
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*
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* P6
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* 11: P6 error 0x800
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* 10-11: Count of events needing PMC6
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*
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* P1..P5
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* 0-9: Count of events needing PMC1..PMC5
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*/
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static const int grsel_shift[8] = {
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MMCR1_GRS_L2SEL_SH, MMCR1_GRS_L2SEL_SH, MMCR1_GRS_L2SEL_SH,
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MMCR1_GRS_L3SEL_SH, MMCR1_GRS_L3SEL_SH, MMCR1_GRS_L3SEL_SH,
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MMCR1_GRS_MCSEL_SH, MMCR1_GRS_FABSEL_SH
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};
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/* Masks and values for using events from the various units */
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static unsigned long unit_cons[PM_LASTUNIT+1][2] = {
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[PM_FPU] = { 0x3200000000ul, 0x0100000000ul },
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[PM_ISU0] = { 0x0200000000ul, 0x0080000000ul },
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[PM_ISU1] = { 0x3200000000ul, 0x3100000000ul },
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[PM_IFU] = { 0x3200000000ul, 0x2100000000ul },
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[PM_IDU] = { 0x0e00000000ul, 0x0040000000ul },
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[PM_GRS] = { 0x0e00000000ul, 0x0c40000000ul },
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};
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static int power5p_get_constraint(u64 event, unsigned long *maskp,
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unsigned long *valp)
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{
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int pmc, byte, unit, sh;
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int bit, fmask;
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unsigned long mask = 0, value = 0;
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pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
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if (pmc) {
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if (pmc > 6)
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return -1;
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sh = (pmc - 1) * 2;
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mask |= 2 << sh;
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value |= 1 << sh;
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if (pmc >= 5 && !(event == 0x500009 || event == 0x600005))
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return -1;
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}
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if (event & PM_BUSEVENT_MSK) {
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unit = (event >> PM_UNIT_SH) & PM_UNIT_MSK;
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if (unit > PM_LASTUNIT)
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return -1;
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if (unit == PM_ISU0_ALT)
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unit = PM_ISU0;
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mask |= unit_cons[unit][0];
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value |= unit_cons[unit][1];
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byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK;
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if (byte >= 4) {
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if (unit != PM_LSU1)
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return -1;
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/* Map LSU1 low word (bytes 4-7) to unit LSU1+1 */
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++unit;
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byte &= 3;
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}
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if (unit == PM_GRS) {
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bit = event & 7;
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fmask = (bit == 6)? 7: 3;
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sh = grsel_shift[bit];
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mask |= (unsigned long)fmask << sh;
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value |= (unsigned long)((event >> PM_GRS_SH) & fmask)
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<< sh;
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}
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/* Set byte lane select field */
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mask |= 0xfUL << (24 - 4 * byte);
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value |= (unsigned long)unit << (24 - 4 * byte);
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}
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if (pmc < 5) {
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/* need a counter from PMC1-4 set */
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mask |= 0x8000000000000ul;
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value |= 0x1000000000000ul;
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}
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*maskp = mask;
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*valp = value;
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return 0;
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}
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static int power5p_limited_pmc_event(u64 event)
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{
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int pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
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return pmc == 5 || pmc == 6;
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}
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#define MAX_ALT 3 /* at most 3 alternatives for any event */
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static const unsigned int event_alternatives[][MAX_ALT] = {
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{ 0x100c0, 0x40001f }, /* PM_GCT_FULL_CYC */
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{ 0x120e4, 0x400002 }, /* PM_GRP_DISP_REJECT */
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{ 0x230e2, 0x323087 }, /* PM_BR_PRED_CR */
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{ 0x230e3, 0x223087, 0x3230a0 }, /* PM_BR_PRED_TA */
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{ 0x410c7, 0x441084 }, /* PM_THRD_L2MISS_BOTH_CYC */
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{ 0x800c4, 0xc20e0 }, /* PM_DTLB_MISS */
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{ 0xc50c6, 0xc60e0 }, /* PM_MRK_DTLB_MISS */
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{ 0x100005, 0x600005 }, /* PM_RUN_CYC */
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{ 0x100009, 0x200009 }, /* PM_INST_CMPL */
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{ 0x200015, 0x300015 }, /* PM_LSU_LMQ_SRQ_EMPTY_CYC */
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{ 0x300009, 0x400009 }, /* PM_INST_DISP */
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};
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/*
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* Scan the alternatives table for a match and return the
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* index into the alternatives table if found, else -1.
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*/
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static int find_alternative(unsigned int event)
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{
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int i, j;
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for (i = 0; i < ARRAY_SIZE(event_alternatives); ++i) {
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if (event < event_alternatives[i][0])
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break;
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for (j = 0; j < MAX_ALT && event_alternatives[i][j]; ++j)
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if (event == event_alternatives[i][j])
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return i;
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}
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return -1;
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}
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static const unsigned char bytedecode_alternatives[4][4] = {
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/* PMC 1 */ { 0x21, 0x23, 0x25, 0x27 },
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/* PMC 2 */ { 0x07, 0x17, 0x0e, 0x1e },
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/* PMC 3 */ { 0x20, 0x22, 0x24, 0x26 },
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/* PMC 4 */ { 0x07, 0x17, 0x0e, 0x1e }
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};
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/*
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* Some direct events for decodes of event bus byte 3 have alternative
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* PMCSEL values on other counters. This returns the alternative
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* event code for those that do, or -1 otherwise. This also handles
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* alternative PCMSEL values for add events.
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*/
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static s64 find_alternative_bdecode(u64 event)
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{
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int pmc, altpmc, pp, j;
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pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
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if (pmc == 0 || pmc > 4)
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return -1;
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altpmc = 5 - pmc; /* 1 <-> 4, 2 <-> 3 */
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pp = event & PM_PMCSEL_MSK;
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for (j = 0; j < 4; ++j) {
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if (bytedecode_alternatives[pmc - 1][j] == pp) {
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return (event & ~(PM_PMC_MSKS | PM_PMCSEL_MSK)) |
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(altpmc << PM_PMC_SH) |
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bytedecode_alternatives[altpmc - 1][j];
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}
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}
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/* new decode alternatives for power5+ */
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if (pmc == 1 && (pp == 0x0d || pp == 0x0e))
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return event + (2 << PM_PMC_SH) + (0x2e - 0x0d);
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if (pmc == 3 && (pp == 0x2e || pp == 0x2f))
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return event - (2 << PM_PMC_SH) - (0x2e - 0x0d);
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/* alternative add event encodings */
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if (pp == 0x10 || pp == 0x28)
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return ((event ^ (0x10 ^ 0x28)) & ~PM_PMC_MSKS) |
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(altpmc << PM_PMC_SH);
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return -1;
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}
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static int power5p_get_alternatives(u64 event, unsigned int flags, u64 alt[])
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{
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int i, j, nalt = 1;
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int nlim;
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s64 ae;
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alt[0] = event;
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nalt = 1;
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nlim = power5p_limited_pmc_event(event);
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i = find_alternative(event);
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if (i >= 0) {
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for (j = 0; j < MAX_ALT; ++j) {
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ae = event_alternatives[i][j];
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if (ae && ae != event)
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alt[nalt++] = ae;
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nlim += power5p_limited_pmc_event(ae);
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}
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} else {
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ae = find_alternative_bdecode(event);
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if (ae > 0)
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alt[nalt++] = ae;
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}
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if (flags & PPMU_ONLY_COUNT_RUN) {
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/*
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* We're only counting in RUN state,
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* so PM_CYC is equivalent to PM_RUN_CYC
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* and PM_INST_CMPL === PM_RUN_INST_CMPL.
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* This doesn't include alternatives that don't provide
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* any extra flexibility in assigning PMCs (e.g.
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* 0x100005 for PM_RUN_CYC vs. 0xf for PM_CYC).
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* Note that even with these additional alternatives
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* we never end up with more than 3 alternatives for any event.
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*/
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j = nalt;
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for (i = 0; i < nalt; ++i) {
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switch (alt[i]) {
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case 0xf: /* PM_CYC */
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alt[j++] = 0x600005; /* PM_RUN_CYC */
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++nlim;
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break;
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case 0x600005: /* PM_RUN_CYC */
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alt[j++] = 0xf;
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break;
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case 0x100009: /* PM_INST_CMPL */
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alt[j++] = 0x500009; /* PM_RUN_INST_CMPL */
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++nlim;
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break;
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case 0x500009: /* PM_RUN_INST_CMPL */
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alt[j++] = 0x100009; /* PM_INST_CMPL */
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alt[j++] = 0x200009;
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break;
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}
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}
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nalt = j;
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}
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if (!(flags & PPMU_LIMITED_PMC_OK) && nlim) {
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/* remove the limited PMC events */
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j = 0;
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for (i = 0; i < nalt; ++i) {
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if (!power5p_limited_pmc_event(alt[i])) {
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alt[j] = alt[i];
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++j;
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}
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}
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nalt = j;
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} else if ((flags & PPMU_LIMITED_PMC_REQD) && nlim < nalt) {
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/* remove all but the limited PMC events */
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j = 0;
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for (i = 0; i < nalt; ++i) {
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if (power5p_limited_pmc_event(alt[i])) {
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alt[j] = alt[i];
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++j;
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}
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}
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nalt = j;
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}
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return nalt;
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}
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/*
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* Map of which direct events on which PMCs are marked instruction events.
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* Indexed by PMCSEL value, bit i (LE) set if PMC i is a marked event.
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* Bit 0 is set if it is marked for all PMCs.
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* The 0x80 bit indicates a byte decode PMCSEL value.
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*/
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static unsigned char direct_event_is_marked[0x28] = {
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0, /* 00 */
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0x1f, /* 01 PM_IOPS_CMPL */
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0x2, /* 02 PM_MRK_GRP_DISP */
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0xe, /* 03 PM_MRK_ST_CMPL, PM_MRK_ST_GPS, PM_MRK_ST_CMPL_INT */
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0, /* 04 */
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0x1c, /* 05 PM_MRK_BRU_FIN, PM_MRK_INST_FIN, PM_MRK_CRU_FIN */
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0x80, /* 06 */
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0x80, /* 07 */
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0, 0, 0,/* 08 - 0a */
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0x18, /* 0b PM_THRESH_TIMEO, PM_MRK_GRP_TIMEO */
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0, /* 0c */
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0x80, /* 0d */
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0x80, /* 0e */
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0, /* 0f */
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0, /* 10 */
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0x14, /* 11 PM_MRK_GRP_BR_REDIR, PM_MRK_GRP_IC_MISS */
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0, /* 12 */
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0x10, /* 13 PM_MRK_GRP_CMPL */
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0x1f, /* 14 PM_GRP_MRK, PM_MRK_{FXU,FPU,LSU}_FIN */
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0x2, /* 15 PM_MRK_GRP_ISSUED */
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0x80, /* 16 */
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0x80, /* 17 */
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0, 0, 0, 0, 0,
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0x80, /* 1d */
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0x80, /* 1e */
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0, /* 1f */
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0x80, /* 20 */
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0x80, /* 21 */
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0x80, /* 22 */
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0x80, /* 23 */
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0x80, /* 24 */
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0x80, /* 25 */
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0x80, /* 26 */
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0x80, /* 27 */
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};
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/*
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* Returns 1 if event counts things relating to marked instructions
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* and thus needs the MMCRA_SAMPLE_ENABLE bit set, or 0 if not.
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*/
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static int power5p_marked_instr_event(u64 event)
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{
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int pmc, psel;
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int bit, byte, unit;
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u32 mask;
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pmc = (event >> PM_PMC_SH) & PM_PMC_MSK;
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psel = event & PM_PMCSEL_MSK;
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if (pmc >= 5)
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return 0;
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bit = -1;
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if (psel < sizeof(direct_event_is_marked)) {
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if (direct_event_is_marked[psel] & (1 << pmc))
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return 1;
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if (direct_event_is_marked[psel] & 0x80)
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bit = 4;
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else if (psel == 0x08)
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bit = pmc - 1;
|
|
else if (psel == 0x10)
|
|
bit = 4 - pmc;
|
|
else if (psel == 0x1b && (pmc == 1 || pmc == 3))
|
|
bit = 4;
|
|
} else if ((psel & 0x48) == 0x40) {
|
|
bit = psel & 7;
|
|
} else if (psel == 0x28) {
|
|
bit = pmc - 1;
|
|
} else if (pmc == 3 && (psel == 0x2e || psel == 0x2f)) {
|
|
bit = 4;
|
|
}
|
|
|
|
if (!(event & PM_BUSEVENT_MSK) || bit == -1)
|
|
return 0;
|
|
|
|
byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK;
|
|
unit = (event >> PM_UNIT_SH) & PM_UNIT_MSK;
|
|
if (unit == PM_LSU0) {
|
|
/* byte 1 bits 0-7, byte 2 bits 0,2-4,6 */
|
|
mask = 0x5dff00;
|
|
} else if (unit == PM_LSU1 && byte >= 4) {
|
|
byte -= 4;
|
|
/* byte 5 bits 6-7, byte 6 bits 0,4, byte 7 bits 0-4,6 */
|
|
mask = 0x5f11c000;
|
|
} else
|
|
return 0;
|
|
|
|
return (mask >> (byte * 8 + bit)) & 1;
|
|
}
|
|
|
|
static int power5p_compute_mmcr(u64 event[], int n_ev,
|
|
unsigned int hwc[], unsigned long mmcr[])
|
|
{
|
|
unsigned long mmcr1 = 0;
|
|
unsigned long mmcra = 0;
|
|
unsigned int pmc, unit, byte, psel;
|
|
unsigned int ttm;
|
|
int i, isbus, bit, grsel;
|
|
unsigned int pmc_inuse = 0;
|
|
unsigned char busbyte[4];
|
|
unsigned char unituse[16];
|
|
int ttmuse;
|
|
|
|
if (n_ev > 6)
|
|
return -1;
|
|
|
|
/* First pass to count resource use */
|
|
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 > 6)
|
|
return -1;
|
|
if (pmc_inuse & (1 << (pmc - 1)))
|
|
return -1;
|
|
pmc_inuse |= 1 << (pmc - 1);
|
|
}
|
|
if (event[i] & PM_BUSEVENT_MSK) {
|
|
unit = (event[i] >> PM_UNIT_SH) & PM_UNIT_MSK;
|
|
byte = (event[i] >> PM_BYTE_SH) & PM_BYTE_MSK;
|
|
if (unit > PM_LASTUNIT)
|
|
return -1;
|
|
if (unit == PM_ISU0_ALT)
|
|
unit = PM_ISU0;
|
|
if (byte >= 4) {
|
|
if (unit != PM_LSU1)
|
|
return -1;
|
|
++unit;
|
|
byte &= 3;
|
|
}
|
|
if (busbyte[byte] && busbyte[byte] != unit)
|
|
return -1;
|
|
busbyte[byte] = unit;
|
|
unituse[unit] = 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Assign resources and set multiplexer selects.
|
|
*
|
|
* PM_ISU0 can go either on TTM0 or TTM1, but that's the only
|
|
* choice we have to deal with.
|
|
*/
|
|
if (unituse[PM_ISU0] &
|
|
(unituse[PM_FPU] | unituse[PM_IFU] | unituse[PM_ISU1])) {
|
|
unituse[PM_ISU0_ALT] = 1; /* move ISU to TTM1 */
|
|
unituse[PM_ISU0] = 0;
|
|
}
|
|
/* Set TTM[01]SEL fields. */
|
|
ttmuse = 0;
|
|
for (i = PM_FPU; i <= PM_ISU1; ++i) {
|
|
if (!unituse[i])
|
|
continue;
|
|
if (ttmuse++)
|
|
return -1;
|
|
mmcr1 |= (unsigned long)i << MMCR1_TTM0SEL_SH;
|
|
}
|
|
ttmuse = 0;
|
|
for (; i <= PM_GRS; ++i) {
|
|
if (!unituse[i])
|
|
continue;
|
|
if (ttmuse++)
|
|
return -1;
|
|
mmcr1 |= (unsigned long)(i & 3) << MMCR1_TTM1SEL_SH;
|
|
}
|
|
if (ttmuse > 1)
|
|
return -1;
|
|
|
|
/* Set byte lane select fields, TTM[23]SEL and GRS_*SEL. */
|
|
for (byte = 0; byte < 4; ++byte) {
|
|
unit = busbyte[byte];
|
|
if (!unit)
|
|
continue;
|
|
if (unit == PM_ISU0 && unituse[PM_ISU0_ALT]) {
|
|
/* get ISU0 through TTM1 rather than TTM0 */
|
|
unit = PM_ISU0_ALT;
|
|
} else if (unit == PM_LSU1 + 1) {
|
|
/* select lower word of LSU1 for this byte */
|
|
mmcr1 |= 1ul << (MMCR1_TTM3SEL_SH + 3 - byte);
|
|
}
|
|
ttm = unit >> 2;
|
|
mmcr1 |= (unsigned long)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;
|
|
isbus = event[i] & PM_BUSEVENT_MSK;
|
|
if (!pmc) {
|
|
/* Bus event or any-PMC direct event */
|
|
for (pmc = 0; pmc < 4; ++pmc) {
|
|
if (!(pmc_inuse & (1 << pmc)))
|
|
break;
|
|
}
|
|
if (pmc >= 4)
|
|
return -1;
|
|
pmc_inuse |= 1 << pmc;
|
|
} else if (pmc <= 4) {
|
|
/* Direct event */
|
|
--pmc;
|
|
if (isbus && (byte & 2) &&
|
|
(psel == 8 || psel == 0x10 || psel == 0x28))
|
|
/* add events on higher-numbered bus */
|
|
mmcr1 |= 1ul << (MMCR1_PMC1_ADDER_SEL_SH - pmc);
|
|
} else {
|
|
/* Instructions or run cycles on PMC5/6 */
|
|
--pmc;
|
|
}
|
|
if (isbus && unit == PM_GRS) {
|
|
bit = psel & 7;
|
|
grsel = (event[i] >> PM_GRS_SH) & PM_GRS_MSK;
|
|
mmcr1 |= (unsigned long)grsel << grsel_shift[bit];
|
|
}
|
|
if (power5p_marked_instr_event(event[i]))
|
|
mmcra |= MMCRA_SAMPLE_ENABLE;
|
|
if ((psel & 0x58) == 0x40 && (byte & 1) != ((pmc >> 1) & 1))
|
|
/* select alternate byte lane */
|
|
psel |= 0x10;
|
|
if (pmc <= 3)
|
|
mmcr1 |= psel << MMCR1_PMCSEL_SH(pmc);
|
|
hwc[i] = pmc;
|
|
}
|
|
|
|
/* Return MMCRx values */
|
|
mmcr[0] = 0;
|
|
if (pmc_inuse & 1)
|
|
mmcr[0] = MMCR0_PMC1CE;
|
|
if (pmc_inuse & 0x3e)
|
|
mmcr[0] |= MMCR0_PMCjCE;
|
|
mmcr[1] = mmcr1;
|
|
mmcr[2] = mmcra;
|
|
return 0;
|
|
}
|
|
|
|
static void power5p_disable_pmc(unsigned int pmc, unsigned long mmcr[])
|
|
{
|
|
if (pmc <= 3)
|
|
mmcr[1] &= ~(0x7fUL << MMCR1_PMCSEL_SH(pmc));
|
|
}
|
|
|
|
static int power5p_generic_events[] = {
|
|
[PERF_COUNT_HW_CPU_CYCLES] = 0xf,
|
|
[PERF_COUNT_HW_INSTRUCTIONS] = 0x100009,
|
|
[PERF_COUNT_HW_CACHE_REFERENCES] = 0x1c10a8, /* LD_REF_L1 */
|
|
[PERF_COUNT_HW_CACHE_MISSES] = 0x3c1088, /* LD_MISS_L1 */
|
|
[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = 0x230e4, /* BR_ISSUED */
|
|
[PERF_COUNT_HW_BRANCH_MISSES] = 0x230e5, /* BR_MPRED_CR */
|
|
};
|
|
|
|
#define C(x) PERF_COUNT_HW_CACHE_##x
|
|
|
|
/*
|
|
* Table of generalized cache-related events.
|
|
* 0 means not supported, -1 means nonsensical, other values
|
|
* are event codes.
|
|
*/
|
|
static int power5p_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
|
|
[C(L1D)] = { /* RESULT_ACCESS RESULT_MISS */
|
|
[C(OP_READ)] = { 0x1c10a8, 0x3c1088 },
|
|
[C(OP_WRITE)] = { 0x2c10a8, 0xc10c3 },
|
|
[C(OP_PREFETCH)] = { 0xc70e7, -1 },
|
|
},
|
|
[C(L1I)] = { /* RESULT_ACCESS RESULT_MISS */
|
|
[C(OP_READ)] = { 0, 0 },
|
|
[C(OP_WRITE)] = { -1, -1 },
|
|
[C(OP_PREFETCH)] = { 0, 0 },
|
|
},
|
|
[C(LL)] = { /* RESULT_ACCESS RESULT_MISS */
|
|
[C(OP_READ)] = { 0, 0 },
|
|
[C(OP_WRITE)] = { 0, 0 },
|
|
[C(OP_PREFETCH)] = { 0xc50c3, 0 },
|
|
},
|
|
[C(DTLB)] = { /* RESULT_ACCESS RESULT_MISS */
|
|
[C(OP_READ)] = { 0xc20e4, 0x800c4 },
|
|
[C(OP_WRITE)] = { -1, -1 },
|
|
[C(OP_PREFETCH)] = { -1, -1 },
|
|
},
|
|
[C(ITLB)] = { /* RESULT_ACCESS RESULT_MISS */
|
|
[C(OP_READ)] = { 0, 0x800c0 },
|
|
[C(OP_WRITE)] = { -1, -1 },
|
|
[C(OP_PREFETCH)] = { -1, -1 },
|
|
},
|
|
[C(BPU)] = { /* RESULT_ACCESS RESULT_MISS */
|
|
[C(OP_READ)] = { 0x230e4, 0x230e5 },
|
|
[C(OP_WRITE)] = { -1, -1 },
|
|
[C(OP_PREFETCH)] = { -1, -1 },
|
|
},
|
|
[C(NODE)] = { /* RESULT_ACCESS RESULT_MISS */
|
|
[C(OP_READ)] = { -1, -1 },
|
|
[C(OP_WRITE)] = { -1, -1 },
|
|
[C(OP_PREFETCH)] = { -1, -1 },
|
|
},
|
|
};
|
|
|
|
static struct power_pmu power5p_pmu = {
|
|
.name = "POWER5+/++",
|
|
.n_counter = 6,
|
|
.max_alternatives = MAX_ALT,
|
|
.add_fields = 0x7000000000055ul,
|
|
.test_adder = 0x3000040000000ul,
|
|
.compute_mmcr = power5p_compute_mmcr,
|
|
.get_constraint = power5p_get_constraint,
|
|
.get_alternatives = power5p_get_alternatives,
|
|
.disable_pmc = power5p_disable_pmc,
|
|
.limited_pmc_event = power5p_limited_pmc_event,
|
|
.flags = PPMU_LIMITED_PMC5_6 | PPMU_HAS_SSLOT,
|
|
.n_generic = ARRAY_SIZE(power5p_generic_events),
|
|
.generic_events = power5p_generic_events,
|
|
.cache_events = &power5p_cache_events,
|
|
};
|
|
|
|
static int __init init_power5p_pmu(void)
|
|
{
|
|
if (!cur_cpu_spec->oprofile_cpu_type ||
|
|
(strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5+")
|
|
&& strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power5++")))
|
|
return -ENODEV;
|
|
|
|
return register_power_pmu(&power5p_pmu);
|
|
}
|
|
|
|
early_initcall(init_power5p_pmu);
|