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-rw-r--r--arch/powerpc/kernel/ppc970-pmu.c502
1 files changed, 0 insertions, 502 deletions
diff --git a/arch/powerpc/kernel/ppc970-pmu.c b/arch/powerpc/kernel/ppc970-pmu.c
deleted file mode 100644
index 8c2190206964..000000000000
--- a/arch/powerpc/kernel/ppc970-pmu.c
+++ /dev/null
@@ -1,502 +0,0 @@
-/*
- * Performance counter support for PPC970-family processors.
- *
- * Copyright 2008-2009 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/string.h>
-#include <linux/perf_event.h>
-#include <asm/reg.h>
-#include <asm/cputable.h>
-
-/*
- * Bits in event code for PPC970
- */
-#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_SPCSEL_SH 6
-#define PM_SPCSEL_MSK 3
-#define PM_BYTE_SH 4 /* Byte number of event bus to use */
-#define PM_BYTE_MSK 3
-#define PM_PMCSEL_MSK 0xf
-
-/* Values in PM_UNIT field */
-#define PM_NONE 0
-#define PM_FPU 1
-#define PM_VPU 2
-#define PM_ISU 3
-#define PM_IFU 4
-#define PM_IDU 5
-#define PM_STS 6
-#define PM_LSU0 7
-#define PM_LSU1U 8
-#define PM_LSU1L 9
-#define PM_LASTUNIT 9
-
-/*
- * Bits in MMCR0 for PPC970
- */
-#define MMCR0_PMC1SEL_SH 8
-#define MMCR0_PMC2SEL_SH 1
-#define MMCR_PMCSEL_MSK 0x1f
-
-/*
- * Bits in MMCR1 for PPC970
- */
-#define MMCR1_TTM0SEL_SH 62
-#define MMCR1_TTM1SEL_SH 59
-#define MMCR1_TTM3SEL_SH 53
-#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_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
-
-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
-};
-
-/*
- * Layout of constraint bits:
- * 6666555555555544444444443333333333222222222211111111110000000000
- * 3210987654321098765432109876543210987654321098765432109876543210
- * <><><>[ >[ >[ >< >< >< >< ><><><><><><><><>
- * SPT0T1 UC PS1 PS2 B0 B1 B2 B3 P1P2P3P4P5P6P7P8
- *
- * SP - SPCSEL constraint
- * 48-49: SPCSEL value 0x3_0000_0000_0000
- *
- * T0 - TTM0 constraint
- * 46-47: TTM0SEL value (0=FPU, 2=IFU, 3=VPU) 0xC000_0000_0000
- *
- * T1 - TTM1 constraint
- * 44-45: TTM1SEL value (0=IDU, 3=STS) 0x3000_0000_0000
- *
- * UC - unit constraint: can't have all three of FPU|IFU|VPU, ISU, IDU|STS
- * 43: UC3 error 0x0800_0000_0000
- * 42: FPU|IFU|VPU events needed 0x0400_0000_0000
- * 41: ISU events needed 0x0200_0000_0000
- * 40: IDU|STS 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
- * Encoding as for the event code
- *
- * B1, B2, B3
- * 24-27, 20-23, 16-19: Byte 1, 2, 3 event sources
- *
- * P1
- * 15: P1 error 0x8000
- * 14-15: Count of events needing PMC1
- *
- * P2..P8
- * 0-13: Count of events needing PMC2..PMC8
- */
-
-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) | (1<<5), /* PMC3: PM_MRK_ST_CMPL_INT, PM_MRK_VMX_FIN */
- (1<<4) | (1<<5), /* PMC4: PM_MRK_GRP_CMPL, PM_MRK_CRU_FIN */
- (1<<4) | (1<<5), /* PMC5: PM_GRP_MRK, PM_MRK_GRP_TIMEO */
- (1<<3) | (1<<4) | (1<<5),
- /* PMC6: PM_MRK_ST_STS, 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 p970_marked_instr_event(u64 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 == 7 || psel == 13) /* 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_VPU:
- mask = 0x4c; /* byte 0 bits 2,3,6 */
- break;
- case PM_LSU0:
- /* byte 2 bits 0,2,3,4,6; all of byte 1 */
- mask = 0x085dff00;
- break;
- case PM_LSU1L:
- mask = 0x50 << 24; /* byte 3 bits 4,6 */
- break;
- }
- return (mask >> (byte * 8 + bit)) & 1;
-}
-
-/* Masks and values for using events from the various units */
-static unsigned long unit_cons[PM_LASTUNIT+1][2] = {
- [PM_FPU] = { 0xc80000000000ull, 0x040000000000ull },
- [PM_VPU] = { 0xc80000000000ull, 0xc40000000000ull },
- [PM_ISU] = { 0x080000000000ull, 0x020000000000ull },
- [PM_IFU] = { 0xc80000000000ull, 0x840000000000ull },
- [PM_IDU] = { 0x380000000000ull, 0x010000000000ull },
- [PM_STS] = { 0x380000000000ull, 0x310000000000ull },
-};
-
-static int p970_get_constraint(u64 event, unsigned long *maskp,
- unsigned long *valp)
-{
- int pmc, byte, unit, sh, spcsel;
- unsigned long 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;
- if (unit) {
- if (unit > PM_LASTUNIT)
- return -1;
- mask |= unit_cons[unit][0];
- value |= unit_cons[unit][1];
- byte = (event >> PM_BYTE_SH) & PM_BYTE_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;
- /* Set byte lane select field */
- mask |= 0xfULL << (28 - 4 * byte);
- value |= (unsigned long)unit << (28 - 4 * byte);
- }
- if (grp == 0) {
- /* increment PMC1/2/5/6 field */
- mask |= 0x8000000000ull;
- value |= 0x1000000000ull;
- } else if (grp == 1) {
- /* increment PMC3/4/7/8 field */
- mask |= 0x800000000ull;
- value |= 0x100000000ull;
- }
- spcsel = (event >> PM_SPCSEL_SH) & PM_SPCSEL_MSK;
- if (spcsel) {
- mask |= 3ull << 48;
- value |= (unsigned long)spcsel << 48;
- }
- *maskp = mask;
- *valp = value;
- return 0;
-}
-
-static int p970_get_alternatives(u64 event, unsigned int flags, u64 alt[])
-{
- alt[0] = event;
-
- /* 2 alternatives for LSU empty */
- if (event == 0x2002 || event == 0x3002) {
- alt[1] = event ^ 0x1000;
- return 2;
- }
-
- return 1;
-}
-
-static int p970_compute_mmcr(u64 event[], int n_ev,
- unsigned int hwc[], unsigned long mmcr[])
-{
- unsigned long mmcr0 = 0, mmcr1 = 0, mmcra = 0;
- unsigned int pmc, unit, byte, psel;
- unsigned int ttm, grp;
- unsigned int pmc_inuse = 0;
- unsigned int pmc_grp_use[2];
- unsigned char busbyte[4];
- unsigned char unituse[16];
- unsigned char unitmap[] = { 0, 0<<3, 3<<3, 1<<3, 2<<3, 0|4, 3|4 };
- unsigned char ttmuse[2];
- unsigned char pmcsel[8];
- int i;
- int spcsel;
-
- 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;
- if (unit) {
- if (unit > PM_LASTUNIT)
- return -1;
- if (!pmc)
- ++pmc_grp_use[byte & 1];
- if (busbyte[byte] && busbyte[byte] != unit)
- return -1;
- busbyte[byte] = unit;
- unituse[unit] = 1;
- }
- }
- if (pmc_grp_use[0] > 4 || pmc_grp_use[1] > 4)
- return -1;
-
- /*
- * Assign resources and set multiplexer selects.
- *
- * PM_ISU can go either on TTM0 or TTM1, but that's the only
- * choice we have to deal with.
- */
- if (unituse[PM_ISU] &
- (unituse[PM_FPU] | unituse[PM_IFU] | unituse[PM_VPU]))
- unitmap[PM_ISU] = 2 | 4; /* move ISU to TTM1 */
- /* Set TTM[01]SEL fields. */
- ttmuse[0] = ttmuse[1] = 0;
- for (i = PM_FPU; i <= PM_STS; ++i) {
- if (!unituse[i])
- continue;
- ttm = unitmap[i];
- ++ttmuse[(ttm >> 2) & 1];
- mmcr1 |= (unsigned long)(ttm & ~4) << MMCR1_TTM1SEL_SH;
- }
- /* Check only one unit per TTMx */
- if (ttmuse[0] > 1 || ttmuse[1] > 1)
- return -1;
-
- /* Set byte lane select fields and TTM3SEL. */
- for (byte = 0; byte < 4; ++byte) {
- unit = busbyte[byte];
- if (!unit)
- continue;
- if (unit <= PM_STS)
- ttm = (unitmap[unit] >> 2) & 1;
- else if (unit == PM_LSU0)
- ttm = 2;
- else {
- ttm = 3;
- if (unit == PM_LSU1L && byte >= 2)
- mmcr1 |= 1ull << (MMCR1_TTM3SEL_SH + 3 - byte);
- }
- mmcr1 |= (unsigned long)ttm
- << (MMCR1_TD_CP_DBG0SEL_SH - 2 * byte);
- }
-
- /* Second pass: assign PMCs, set PMCxSEL and PMCx_ADDER_SEL fields */
- memset(pmcsel, 0x8, sizeof(pmcsel)); /* 8 means don't count */
- 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 any-PMC direct event */
- if (unit)
- psel |= 0x10 | ((byte & 2) << 2);
- else
- psel |= 8;
- 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];
- }
- pmcsel[pmc] = psel;
- hwc[i] = pmc;
- spcsel = (event[i] >> PM_SPCSEL_SH) & PM_SPCSEL_MSK;
- mmcr1 |= spcsel;
- if (p970_marked_instr_event(event[i]))
- mmcra |= MMCRA_SAMPLE_ENABLE;
- }
- for (pmc = 0; pmc < 2; ++pmc)
- mmcr0 |= pmcsel[pmc] << (MMCR0_PMC1SEL_SH - 7 * pmc);
- for (; pmc < 8; ++pmc)
- mmcr1 |= (unsigned long)pmcsel[pmc]
- << (MMCR1_PMC3SEL_SH - 5 * (pmc - 2));
- 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 p970_disable_pmc(unsigned int pmc, unsigned long mmcr[])
-{
- int shift, i;
-
- if (pmc <= 1) {
- shift = MMCR0_PMC1SEL_SH - 7 * pmc;
- i = 0;
- } else {
- shift = MMCR1_PMC3SEL_SH - 5 * (pmc - 2);
- i = 1;
- }
- /*
- * Setting the PMCxSEL field to 0x08 disables PMC x.
- */
- mmcr[i] = (mmcr[i] & ~(0x1fUL << shift)) | (0x08UL << shift);
-}
-
-static int ppc970_generic_events[] = {
- [PERF_COUNT_HW_CPU_CYCLES] = 7,
- [PERF_COUNT_HW_INSTRUCTIONS] = 1,
- [PERF_COUNT_HW_CACHE_REFERENCES] = 0x8810, /* PM_LD_REF_L1 */
- [PERF_COUNT_HW_CACHE_MISSES] = 0x3810, /* PM_LD_MISS_L1 */
- [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = 0x431, /* PM_BR_ISSUED */
- [PERF_COUNT_HW_BRANCH_MISSES] = 0x327, /* PM_GRP_BR_MPRED */
-};
-
-#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 ppc970_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
- [C(L1D)] = { /* RESULT_ACCESS RESULT_MISS */
- [C(OP_READ)] = { 0x8810, 0x3810 },
- [C(OP_WRITE)] = { 0x7810, 0x813 },
- [C(OP_PREFETCH)] = { 0x731, 0 },
- },
- [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)] = { 0x733, 0 },
- },
- [C(DTLB)] = { /* RESULT_ACCESS RESULT_MISS */
- [C(OP_READ)] = { 0, 0x704 },
- [C(OP_WRITE)] = { -1, -1 },
- [C(OP_PREFETCH)] = { -1, -1 },
- },
- [C(ITLB)] = { /* RESULT_ACCESS RESULT_MISS */
- [C(OP_READ)] = { 0, 0x700 },
- [C(OP_WRITE)] = { -1, -1 },
- [C(OP_PREFETCH)] = { -1, -1 },
- },
- [C(BPU)] = { /* RESULT_ACCESS RESULT_MISS */
- [C(OP_READ)] = { 0x431, 0x327 },
- [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 ppc970_pmu = {
- .name = "PPC970/FX/MP",
- .n_counter = 8,
- .max_alternatives = 2,
- .add_fields = 0x001100005555ull,
- .test_adder = 0x013300000000ull,
- .compute_mmcr = p970_compute_mmcr,
- .get_constraint = p970_get_constraint,
- .get_alternatives = p970_get_alternatives,
- .disable_pmc = p970_disable_pmc,
- .n_generic = ARRAY_SIZE(ppc970_generic_events),
- .generic_events = ppc970_generic_events,
- .cache_events = &ppc970_cache_events,
-};
-
-static int __init init_ppc970_pmu(void)
-{
- if (!cur_cpu_spec->oprofile_cpu_type ||
- (strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/970")
- && strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/970MP")))
- return -ENODEV;
-
- return register_power_pmu(&ppc970_pmu);
-}
-
-early_initcall(init_ppc970_pmu);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.