[PATCH 2/3] [ARM] perfevents: Add support for Scorpion performance monitors
From: Sheetal Sahasrabudhe
Date: Fri Mar 04 2011 - 17:10:32 EST
This commit adds support for performance monitors provided by
Qualcomm Scorpion and ScorpionMP processor to perfevents.
Signed-off-by: Sheetal Sahasrabudhe <sheetals@xxxxxxxxxxxxxx>
---
arch/arm/include/asm/perf_event.h | 2 +
arch/arm/kernel/perf_event.c | 11 +
arch/arm/kernel/perf_event_qc.c | 677 +++++++++++++++++++++++++++++++++++++
3 files changed, 690 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/kernel/perf_event_qc.c
diff --git a/arch/arm/include/asm/perf_event.h b/arch/arm/include/asm/perf_event.h
index c4aa4e8..a549d82 100644
--- a/arch/arm/include/asm/perf_event.h
+++ b/arch/arm/include/asm/perf_event.h
@@ -24,6 +24,8 @@ enum arm_perf_pmu_ids {
ARM_PERF_PMU_ID_V6MP,
ARM_PERF_PMU_ID_CA8,
ARM_PERF_PMU_ID_CA9,
+ ARM_PERF_PMU_ID_SCORPION,
+ ARM_PERF_PMU_ID_SCORPIONMP,
ARM_NUM_PMU_IDS,
};
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index d150ad1..02f24ec 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -608,6 +608,7 @@ static struct pmu pmu = {
#include "perf_event_xscale.c"
#include "perf_event_v6.c"
#include "perf_event_v7.c"
+#include "perf_event_qc.c"
static int __init
init_hw_perf_events(void)
@@ -645,6 +646,16 @@ init_hw_perf_events(void)
armpmu = xscale2pmu_init();
break;
}
+ /* Qualcomm CPUs */
+ } else if (0x51 == implementor) {
+ switch (part_number) {
+ case 0x00F0: /* 8x50 & 7x30*/
+ armpmu = armv7_scorpion_pmu_init();
+ break;
+ case 0x02D0: /* 8x60 */
+ armpmu = armv7_scorpionmp_pmu_init();
+ break;
+ }
}
if (armpmu) {
diff --git a/arch/arm/kernel/perf_event_qc.c b/arch/arm/kernel/perf_event_qc.c
new file mode 100644
index 0000000..98a508d
--- /dev/null
+++ b/arch/arm/kernel/perf_event_qc.c
@@ -0,0 +1,677 @@
+/* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License version 2 and
+* only version 2 as published by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*/
+
+#include <asm/vfp.h>
+#include "../vfp/vfpinstr.h"
+
+#ifdef CONFIG_CPU_V7
+enum scorpion_perf_common {
+ SCORPION_EVT_START_IDX = 0x4c,
+ SCORPION_ICACHE_EXPL_INV = 0x4c,
+ SCORPION_ICACHE_MISS = 0x4d,
+ SCORPION_ICACHE_ACCESS = 0x4e,
+ SCORPION_ICACHE_CACHEREQ_L2 = 0x4f,
+ SCORPION_ICACHE_NOCACHE_L2 = 0x50,
+ SCORPION_HIQUP_NOPED = 0x51,
+ SCORPION_DATA_ABORT = 0x52,
+ SCORPION_IRQ = 0x53,
+ SCORPION_FIQ = 0x54,
+ SCORPION_ALL_EXCPT = 0x55,
+ SCORPION_UNDEF = 0x56,
+ SCORPION_SVC = 0x57,
+ SCORPION_SMC = 0x58,
+ SCORPION_PREFETCH_ABORT = 0x59,
+ SCORPION_INDEX_CHECK = 0x5a,
+ SCORPION_NULL_CHECK = 0x5b,
+ SCORPION_EXPL_ICIALLU = 0x5c,
+ SCORPION_IMPL_ICIALLU = 0x5d,
+ SCORPION_NONICIALLU_BTAC_INV = 0x5e,
+ SCORPION_ICIMVAU_IMPL_ICIALLU = 0x5f,
+ SCORPION_SPIPE_ONLY_CYCLES = 0x60,
+ SCORPION_XPIPE_ONLY_CYCLES = 0x61,
+ SCORPION_DUAL_CYCLES = 0x62,
+ SCORPION_DISPATCH_ANY_CYCLES = 0x63,
+ SCORPION_FIFO_FULLBLK_CMT = 0x64,
+ SCORPION_FAIL_COND_INST = 0x65,
+ SCORPION_PASS_COND_INST = 0x66,
+ SCORPION_ALLOW_VU_CLK = 0x67,
+ SCORPION_VU_IDLE = 0x68,
+ SCORPION_ALLOW_L2_CLK = 0x69,
+ SCORPION_L2_IDLE = 0x6a,
+ SCORPION_DTLB_IMPL_INV_SCTLR_DACR = 0x6b,
+ SCORPION_DTLB_EXPL_INV = 0x6c,
+ SCORPION_DTLB_MISS = 0x6d,
+ SCORPION_DTLB_ACCESS = 0x6e,
+ SCORPION_ITLB_MISS = 0x6f,
+ SCORPION_ITLB_IMPL_INV = 0x70,
+ SCORPION_ITLB_EXPL_INV = 0x71,
+ SCORPION_UTLB_D_MISS = 0x72,
+ SCORPION_UTLB_D_ACCESS = 0x73,
+ SCORPION_UTLB_I_MISS = 0x74,
+ SCORPION_UTLB_I_ACCESS = 0x75,
+ SCORPION_UTLB_INV_ASID = 0x76,
+ SCORPION_UTLB_INV_MVA = 0x77,
+ SCORPION_UTLB_INV_ALL = 0x78,
+ SCORPION_S2_HOLD_RDQ_UNAVAIL = 0x79,
+ SCORPION_S2_HOLD = 0x7a,
+ SCORPION_S2_HOLD_DEV_OP = 0x7b,
+ SCORPION_S2_HOLD_ORDER = 0x7c,
+ SCORPION_S2_HOLD_BARRIER = 0x7d,
+ SCORPION_VIU_DUAL_CYCLE = 0x7e,
+ SCORPION_VIU_SINGLE_CYCLE = 0x7f,
+ SCORPION_VX_PIPE_WAR_STALL_CYCLES = 0x80,
+ SCORPION_VX_PIPE_WAW_STALL_CYCLES = 0x81,
+ SCORPION_VX_PIPE_RAW_STALL_CYCLES = 0x82,
+ SCORPION_VX_PIPE_LOAD_USE_STALL = 0x83,
+ SCORPION_VS_PIPE_WAR_STALL_CYCLES = 0x84,
+ SCORPION_VS_PIPE_WAW_STALL_CYCLES = 0x85,
+ SCORPION_VS_PIPE_RAW_STALL_CYCLES = 0x86,
+ SCORPION_EXCEPTIONS_INV_OPERATION = 0x87,
+ SCORPION_EXCEPTIONS_DIV_BY_ZERO = 0x88,
+ SCORPION_COND_INST_FAIL_VX_PIPE = 0x89,
+ SCORPION_COND_INST_FAIL_VS_PIPE = 0x8a,
+ SCORPION_EXCEPTIONS_OVERFLOW = 0x8b,
+ SCORPION_EXCEPTIONS_UNDERFLOW = 0x8c,
+ SCORPION_EXCEPTIONS_DENORM = 0x8d,
+};
+
+enum scorpion_perf_smp {
+ SCORPIONMP_NUM_BARRIERS = 0x8e,
+ SCORPIONMP_BARRIER_CYCLES = 0x8f,
+};
+
+enum scorpion_perf_up {
+ SCORPION_BANK_AB_HIT = 0x8e,
+ SCORPION_BANK_AB_ACCESS = 0x8f,
+ SCORPION_BANK_CD_HIT = 0x90,
+ SCORPION_BANK_CD_ACCESS = 0x91,
+ SCORPION_BANK_AB_DSIDE_HIT = 0x92,
+ SCORPION_BANK_AB_DSIDE_ACCESS = 0x93,
+ SCORPION_BANK_CD_DSIDE_HIT = 0x94,
+ SCORPION_BANK_CD_DSIDE_ACCESS = 0x95,
+ SCORPION_BANK_AB_ISIDE_HIT = 0x96,
+ SCORPION_BANK_AB_ISIDE_ACCESS = 0x97,
+ SCORPION_BANK_CD_ISIDE_HIT = 0x98,
+ SCORPION_BANK_CD_ISIDE_ACCESS = 0x99,
+ SCORPION_ISIDE_RD_WAIT = 0x9a,
+ SCORPION_DSIDE_RD_WAIT = 0x9b,
+ SCORPION_BANK_BYPASS_WRITE = 0x9c,
+ SCORPION_BANK_AB_NON_CASTOUT = 0x9d,
+ SCORPION_BANK_AB_L2_CASTOUT = 0x9e,
+ SCORPION_BANK_CD_NON_CASTOUT = 0x9f,
+ SCORPION_BANK_CD_L2_CASTOUT = 0xa0,
+};
+
+static const unsigned armv7_scorpion_perf_map[PERF_COUNT_HW_MAX] = {
+ [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
+ [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
+ [PERF_COUNT_HW_CACHE_REFERENCES] = HW_OP_UNSUPPORTED,
+ [PERF_COUNT_HW_CACHE_MISSES] = HW_OP_UNSUPPORTED,
+ [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
+ [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
+ [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES,
+};
+
+static const unsigned armv7_scorpion_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
+ [PERF_COUNT_HW_CACHE_OP_MAX]
+ [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
+ [C(L1D)] = {
+ /*
+ * The performance counters don't differentiate between read
+ * and write accesses/misses so this isn't strictly correct,
+ * but it's the best we can do. Writes and reads get
+ * combined.
+ */
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = ARMV7_PERFCTR_DCACHE_ACCESS,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_DCACHE_REFILL,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = ARMV7_PERFCTR_DCACHE_ACCESS,
+ [C(RESULT_MISS)] = ARMV7_PERFCTR_DCACHE_REFILL,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(L1I)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = SCORPION_ICACHE_ACCESS,
+ [C(RESULT_MISS)] = SCORPION_ICACHE_MISS,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = SCORPION_ICACHE_ACCESS,
+ [C(RESULT_MISS)] = SCORPION_ICACHE_MISS,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(LL)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(DTLB)] = {
+ /*
+ * Only ITLB misses and DTLB refills are supported.
+ * If users want the DTLB refills misses a raw counter
+ * must be used.
+ */
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = SCORPION_DTLB_ACCESS,
+ [C(RESULT_MISS)] = SCORPION_DTLB_MISS,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = SCORPION_DTLB_ACCESS,
+ [C(RESULT_MISS)] = SCORPION_DTLB_MISS,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(ITLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = SCORPION_ITLB_MISS,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = SCORPION_ITLB_MISS,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+ [C(BPU)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)]
+ = ARMV7_PERFCTR_PC_BRANCH_MIS_USED,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_PC_BRANCH_MIS_USED,
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)]
+ = ARMV7_PERFCTR_PC_BRANCH_MIS_USED,
+ [C(RESULT_MISS)]
+ = ARMV7_PERFCTR_PC_BRANCH_MIS_USED,
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
+ [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
+ },
+ },
+};
+
+struct scorpion_evt {
+ /*
+ * The scorpion_evt_type field corresponds to the actual Scorpion
+ * event codes. These map many-to-one to the armv7 defined codes
+ */
+ u32 scorpion_evt_type;
+
+ /*
+ * The group_setval field corresponds to the value that the group
+ * register needs to be set to. This value is deduced from the row
+ * and column that the event belongs to in the event table
+ */
+ u32 group_setval;
+
+ /*
+ * The groupcode corresponds to the group that the event belongs to.
+ * Scorpion has 5 groups of events LPM0, LPM1, LPM2, L2LPM and VLPM
+ * going from 0 to 4 in terms of the codes used
+ */
+ u8 groupcode;
+
+ /*
+ * The armv7_evt_type field corresponds to the armv7 defined event
+ * code that the Scorpion events map to
+ */
+ u32 armv7_evt_type;
+};
+
+static const struct scorpion_evt scorpion_event[] = {
+ {SCORPION_ICACHE_EXPL_INV, 0x80000500, 0, 0x4d},
+ {SCORPION_ICACHE_MISS, 0x80050000, 0, 0x4e},
+ {SCORPION_ICACHE_ACCESS, 0x85000000, 0, 0x4f},
+ {SCORPION_ICACHE_CACHEREQ_L2, 0x86000000, 0, 0x4f},
+ {SCORPION_ICACHE_NOCACHE_L2, 0x87000000, 0, 0x4f},
+ {SCORPION_HIQUP_NOPED, 0x80080000, 0, 0x4e},
+ {SCORPION_DATA_ABORT, 0x8000000a, 0, 0x4c},
+ {SCORPION_IRQ, 0x80000a00, 0, 0x4d},
+ {SCORPION_FIQ, 0x800a0000, 0, 0x4e},
+ {SCORPION_ALL_EXCPT, 0x8a000000, 0, 0x4f},
+ {SCORPION_UNDEF, 0x8000000b, 0, 0x4c},
+ {SCORPION_SVC, 0x80000b00, 0, 0x4d},
+ {SCORPION_SMC, 0x800b0000, 0, 0x4e},
+ {SCORPION_PREFETCH_ABORT, 0x8b000000, 0, 0x4f},
+ {SCORPION_INDEX_CHECK, 0x8000000c, 0, 0x4c},
+ {SCORPION_NULL_CHECK, 0x80000c00, 0, 0x4d},
+ {SCORPION_EXPL_ICIALLU, 0x8000000d, 0, 0x4c},
+ {SCORPION_IMPL_ICIALLU, 0x80000d00, 0, 0x4d},
+ {SCORPION_NONICIALLU_BTAC_INV, 0x800d0000, 0, 0x4e},
+ {SCORPION_ICIMVAU_IMPL_ICIALLU, 0x8d000000, 0, 0x4f},
+
+ {SCORPION_SPIPE_ONLY_CYCLES, 0x80000600, 1, 0x51},
+ {SCORPION_XPIPE_ONLY_CYCLES, 0x80060000, 1, 0x52},
+ {SCORPION_DUAL_CYCLES, 0x86000000, 1, 0x53},
+ {SCORPION_DISPATCH_ANY_CYCLES, 0x89000000, 1, 0x53},
+ {SCORPION_FIFO_FULLBLK_CMT, 0x8000000d, 1, 0x50},
+ {SCORPION_FAIL_COND_INST, 0x800d0000, 1, 0x52},
+ {SCORPION_PASS_COND_INST, 0x8d000000, 1, 0x53},
+ {SCORPION_ALLOW_VU_CLK, 0x8000000e, 1, 0x50},
+ {SCORPION_VU_IDLE, 0x80000e00, 1, 0x51},
+ {SCORPION_ALLOW_L2_CLK, 0x800e0000, 1, 0x52},
+ {SCORPION_L2_IDLE, 0x8e000000, 1, 0x53},
+
+ {SCORPION_DTLB_IMPL_INV_SCTLR_DACR, 0x80000001, 2, 0x54},
+ {SCORPION_DTLB_EXPL_INV, 0x80000100, 2, 0x55},
+ {SCORPION_DTLB_MISS, 0x80010000, 2, 0x56},
+ {SCORPION_DTLB_ACCESS, 0x81000000, 2, 0x57},
+ {SCORPION_ITLB_MISS, 0x80000200, 2, 0x55},
+ {SCORPION_ITLB_IMPL_INV, 0x80020000, 2, 0x56},
+ {SCORPION_ITLB_EXPL_INV, 0x82000000, 2, 0x57},
+ {SCORPION_UTLB_D_MISS, 0x80000003, 2, 0x54},
+ {SCORPION_UTLB_D_ACCESS, 0x80000300, 2, 0x55},
+ {SCORPION_UTLB_I_MISS, 0x80030000, 2, 0x56},
+ {SCORPION_UTLB_I_ACCESS, 0x83000000, 2, 0x57},
+ {SCORPION_UTLB_INV_ASID, 0x80000400, 2, 0x55},
+ {SCORPION_UTLB_INV_MVA, 0x80040000, 2, 0x56},
+ {SCORPION_UTLB_INV_ALL, 0x84000000, 2, 0x57},
+ {SCORPION_S2_HOLD_RDQ_UNAVAIL, 0x80000800, 2, 0x55},
+ {SCORPION_S2_HOLD, 0x88000000, 2, 0x57},
+ {SCORPION_S2_HOLD_DEV_OP, 0x80000900, 2, 0x55},
+ {SCORPION_S2_HOLD_ORDER, 0x80090000, 2, 0x56},
+ {SCORPION_S2_HOLD_BARRIER, 0x89000000, 2, 0x57},
+
+ {SCORPION_VIU_DUAL_CYCLE, 0x80000001, 4, 0x5c},
+ {SCORPION_VIU_SINGLE_CYCLE, 0x80000100, 4, 0x5d},
+ {SCORPION_VX_PIPE_WAR_STALL_CYCLES, 0x80000005, 4, 0x5c},
+ {SCORPION_VX_PIPE_WAW_STALL_CYCLES, 0x80000500, 4, 0x5d},
+ {SCORPION_VX_PIPE_RAW_STALL_CYCLES, 0x80050000, 4, 0x5e},
+ {SCORPION_VX_PIPE_LOAD_USE_STALL, 0x80000007, 4, 0x5c},
+ {SCORPION_VS_PIPE_WAR_STALL_CYCLES, 0x80000008, 4, 0x5c},
+ {SCORPION_VS_PIPE_WAW_STALL_CYCLES, 0x80000800, 4, 0x5d},
+ {SCORPION_VS_PIPE_RAW_STALL_CYCLES, 0x80080000, 4, 0x5e},
+ {SCORPION_EXCEPTIONS_INV_OPERATION, 0x8000000b, 4, 0x5c},
+ {SCORPION_EXCEPTIONS_DIV_BY_ZERO, 0x80000b00, 4, 0x5d},
+ {SCORPION_COND_INST_FAIL_VX_PIPE, 0x800b0000, 4, 0x5e},
+ {SCORPION_COND_INST_FAIL_VS_PIPE, 0x8b000000, 4, 0x5f},
+ {SCORPION_EXCEPTIONS_OVERFLOW, 0x8000000c, 4, 0x5c},
+ {SCORPION_EXCEPTIONS_UNDERFLOW, 0x80000c00, 4, 0x5d},
+ {SCORPION_EXCEPTIONS_DENORM, 0x8c000000, 4, 0x5f},
+
+#ifdef CONFIG_ARCH_MSM_SCORPIONMP
+ {SCORPIONMP_NUM_BARRIERS, 0x80000e00, 3, 0x59},
+ {SCORPIONMP_BARRIER_CYCLES, 0x800e0000, 3, 0x5a},
+#else
+ {SCORPION_BANK_AB_HIT, 0x80000001, 3, 0x58},
+ {SCORPION_BANK_AB_ACCESS, 0x80000100, 3, 0x59},
+ {SCORPION_BANK_CD_HIT, 0x80010000, 3, 0x5a},
+ {SCORPION_BANK_CD_ACCESS, 0x81000000, 3, 0x5b},
+ {SCORPION_BANK_AB_DSIDE_HIT, 0x80000002, 3, 0x58},
+ {SCORPION_BANK_AB_DSIDE_ACCESS, 0x80000200, 3, 0x59},
+ {SCORPION_BANK_CD_DSIDE_HIT, 0x80020000, 3, 0x5a},
+ {SCORPION_BANK_CD_DSIDE_ACCESS, 0x82000000, 3, 0x5b},
+ {SCORPION_BANK_AB_ISIDE_HIT, 0x80000003, 3, 0x58},
+ {SCORPION_BANK_AB_ISIDE_ACCESS, 0x80000300, 3, 0x59},
+ {SCORPION_BANK_CD_ISIDE_HIT, 0x80030000, 3, 0x5a},
+ {SCORPION_BANK_CD_ISIDE_ACCESS, 0x83000000, 3, 0x5b},
+ {SCORPION_ISIDE_RD_WAIT, 0x80000009, 3, 0x58},
+ {SCORPION_DSIDE_RD_WAIT, 0x80090000, 3, 0x5a},
+ {SCORPION_BANK_BYPASS_WRITE, 0x8000000a, 3, 0x58},
+ {SCORPION_BANK_AB_NON_CASTOUT, 0x8000000c, 3, 0x58},
+ {SCORPION_BANK_AB_L2_CASTOUT, 0x80000c00, 3, 0x59},
+ {SCORPION_BANK_CD_NON_CASTOUT, 0x800c0000, 3, 0x5a},
+ {SCORPION_BANK_CD_L2_CASTOUT, 0x8c000000, 3, 0x5b},
+#endif
+};
+
+static unsigned int get_scorpion_evtinfo(unsigned int scorpion_evt_type,
+ struct scorpion_evt *evtinfo)
+{
+ u32 idx;
+ if (scorpion_evt_type < SCORPION_EVT_START_IDX || scorpion_evt_type >=
+ (ARRAY_SIZE(scorpion_event) + SCORPION_EVT_START_IDX))
+ return -EINVAL;
+ idx = scorpion_evt_type - SCORPION_EVT_START_IDX;
+ if (scorpion_event[idx].scorpion_evt_type == scorpion_evt_type) {
+ evtinfo->group_setval = scorpion_event[idx].group_setval;
+ evtinfo->groupcode = scorpion_event[idx].groupcode;
+ evtinfo->armv7_evt_type = scorpion_event[idx].armv7_evt_type;
+ return scorpion_event[idx].armv7_evt_type;
+ }
+ return -EINVAL;
+}
+
+static u32 scorpion_read_lpm0(void)
+{
+ u32 val;
+ asm volatile("mrc p15, 0, %0, c15, c0, 0" : "=r" (val));
+ return val;
+}
+
+static void scorpion_write_lpm0(u32 val)
+{
+ asm volatile("mcr p15, 0, %0, c15, c0, 0" : : "r" (val));
+}
+
+static u32 scorpion_read_lpm1(void)
+{
+ u32 val;
+ asm volatile("mrc p15, 1, %0, c15, c0, 0" : "=r" (val));
+ return val;
+}
+
+static void scorpion_write_lpm1(u32 val)
+{
+ asm volatile("mcr p15, 1, %0, c15, c0, 0" : : "r" (val));
+}
+
+static u32 scorpion_read_lpm2(void)
+{
+ u32 val;
+ asm volatile("mrc p15, 2, %0, c15, c0, 0" : "=r" (val));
+ return val;
+}
+
+static void scorpion_write_lpm2(u32 val)
+{
+ asm volatile("mcr p15, 2, %0, c15, c0, 0" : : "r" (val));
+}
+
+static u32 scorpion_read_l2lpm(void)
+{
+ u32 val;
+ asm volatile("mrc p15, 3, %0, c15, c2, 0" : "=r" (val));
+ return val;
+}
+
+static void scorpion_write_l2lpm(u32 val)
+{
+ asm volatile("mcr p15, 3, %0, c15, c2, 0" : : "r" (val));
+}
+
+static u32 scorpion_read_vlpm(void)
+{
+ u32 val;
+ asm volatile("mrc p10, 7, %0, c11, c0, 0" : "=r" (val));
+ return val;
+}
+
+static void scorpion_write_vlpm(u32 val)
+{
+ asm volatile("mcr p10, 7, %0, c11, c0, 0" : : "r" (val));
+}
+
+/*The Scorpion processor supports performance monitoring for Venum unit.
+ * In order to access the performance monitor registers corresponding to
+ * VFP, CPACR and FPEXC registers need to be set up beforehand.
+ * Also, they need to be recovered once the access is done.
+ * This is the reason for having pre and post functions
+ */
+
+static DEFINE_PER_CPU(u32, venum_orig_val);
+static DEFINE_PER_CPU(u32, fp_orig_val);
+
+static void scorpion_pre_vlpm(void)
+{
+ u32 venum_new_val;
+ u32 fp_new_val;
+ /* CPACR Enable CP10 access*/
+ asm volatile("mrc p15, 0, %0, c1, c0, 2" : "=r" (venum_orig_val));
+ venum_new_val = venum_orig_val | 0x00100000;
+ asm volatile("mcr p15, 0, %0, c1, c0, 2" : : "r" (venum_new_val));
+ isb();
+ /* Enable FPEXC */
+ fp_orig_val = fmrx(FPEXC);
+ fp_new_val = fp_orig_val | FPEXC_EN;
+ fmxr(FPEXC, fp_new_val);
+}
+
+static void scorpion_post_vlpm(void)
+{
+ /* Restore FPEXC*/
+ fmxr(FPEXC, fp_orig_val);
+ isb();
+ /* Restore CPACR*/
+ asm volatile("mcr p15, 0, %0, c1, c0, 2" : : "r" (venum_orig_val));
+}
+
+struct scorpion_access_funcs {
+ u32 (*read) (void);
+ void (*write) (u32);
+ void (*pre) (void);
+ void (*post) (void);
+};
+
+/* The scorpion_functions array is used to set up the event register codes
+ * based on the group to which an event belongs to.
+ * Having the following array modularizes the code for doing that.
+ */
+struct scorpion_access_funcs scorpion_functions[] = {
+ {scorpion_read_lpm0, scorpion_write_lpm0, NULL, NULL},
+ {scorpion_read_lpm1, scorpion_write_lpm1, NULL, NULL},
+ {scorpion_read_lpm2, scorpion_write_lpm2, NULL, NULL},
+ {scorpion_read_l2lpm, scorpion_write_l2lpm, NULL, NULL},
+ {scorpion_read_vlpm, scorpion_write_vlpm, scorpion_pre_vlpm,
+ scorpion_post_vlpm},
+};
+
+static inline u32 scorpion_get_columnmask(u32 evt_code)
+{
+ const u32 columnmasks[] = {0xffffff00, 0xffff00ff, 0xff00ffff,
+ 0x80ffffff};
+ return columnmasks[evt_code & 0x3];
+}
+
+static void scorpion_evt_setup(u32 gr, u32 setval, u32 evt_code)
+{
+ u32 val;
+ if (scorpion_functions[gr].pre)
+ scorpion_functions[gr].pre();
+ val = scorpion_get_columnmask(evt_code) & scorpion_functions[gr].read();
+ val = val | setval;
+ scorpion_functions[gr].write(val);
+ if (scorpion_functions[gr].post)
+ scorpion_functions[gr].post();
+}
+
+static void scorpion_clear_pmuregs(void)
+{
+ unsigned long flags;
+ scorpion_write_lpm0(0);
+ scorpion_write_lpm1(0);
+ scorpion_write_lpm2(0);
+ scorpion_write_l2lpm(0);
+ raw_spin_lock_irqsave(&pmu_lock, flags);
+ scorpion_pre_vlpm();
+ scorpion_write_vlpm(0);
+ scorpion_post_vlpm();
+ raw_spin_unlock_irqrestore(&pmu_lock, flags);
+}
+
+static void scorpion_clearpmu(u32 grp, u32 val, u32 evt_code)
+{
+ u32 orig_pmuval, new_pmuval;
+ if (scorpion_functions[grp].pre)
+ scorpion_functions[grp].pre();
+ orig_pmuval = scorpion_functions[grp].read();
+ val = val & ~scorpion_get_columnmask(evt_code);
+ new_pmuval = orig_pmuval & ~val;
+ scorpion_functions[grp].write(new_pmuval);
+ if (scorpion_functions[grp].post)
+ scorpion_functions[grp].post();
+}
+
+static void scorpion_pmu_disable_event(struct hw_perf_event *hwc, int idx)
+{
+ unsigned long flags;
+ u32 val = 0;
+ u32 gr;
+ unsigned long event;
+ struct scorpion_evt evtinfo;
+
+ /*
+ * Disable counter and interrupt
+ */
+ raw_spin_lock_irqsave(&pmu_lock, flags);
+
+ /*
+ * Disable counter
+ */
+ armv7_pmnc_disable_counter(idx);
+
+ /*
+ * Clear lpm code (if destined for PMNx counters)
+ * We don't need to set the event if it's a cycle count
+ */
+ if (idx != ARMV7_CYCLE_COUNTER) {
+ val = hwc->config_base;
+ val &= ARMV7_EVTSEL_MASK;
+ if (val > 0x40) {
+ event = get_scorpion_evtinfo(val, &evtinfo);
+ if (event == -EINVAL)
+ goto scorpion_dis_out;
+ val = evtinfo.group_setval;
+ gr = evtinfo.groupcode;
+ scorpion_clearpmu(gr, val, evtinfo.armv7_evt_type);
+ }
+ }
+ /*
+ * Disable interrupt for this counter
+ */
+ armv7_pmnc_disable_intens(idx);
+
+scorpion_dis_out:
+ raw_spin_unlock_irqrestore(&pmu_lock, flags);
+}
+
+static void scorpion_pmu_enable_event(struct hw_perf_event *hwc, int idx)
+{
+ unsigned long flags;
+ u32 val = 0;
+ u32 gr;
+ unsigned long event;
+ struct scorpion_evt evtinfo;
+
+ /*
+ * Enable counter and interrupt, and set the counter to count
+ * the event that we're interested in.
+ */
+ raw_spin_lock_irqsave(&pmu_lock, flags);
+
+ /*
+ * Disable counter
+ */
+ armv7_pmnc_disable_counter(idx);
+
+ /*
+ * Set event (if destined for PMNx counters)
+ * We don't need to set the event if it's a cycle count
+ */
+ if (idx != ARMV7_CYCLE_COUNTER) {
+ val = hwc->config_base;
+ val &= ARMV7_EVTSEL_MASK;
+ if (val < 0x40) {
+ armv7_pmnc_write_evtsel(idx, hwc->config_base);
+ } else {
+ event = get_scorpion_evtinfo(val, &evtinfo);
+
+ if (event == -EINVAL)
+ goto scorpion_out;
+ /*
+ * Set event (if destined for PMNx counters)
+ * We don't need to set the event if it's a cycle count
+ */
+ armv7_pmnc_write_evtsel(idx, event);
+ val = 0x0;
+ asm volatile("mcr p15, 0, %0, c9, c15, 0" : :
+ "r" (val));
+ val = evtinfo.group_setval;
+ gr = evtinfo.groupcode;
+ scorpion_evt_setup(gr, val, evtinfo.armv7_evt_type);
+ }
+ }
+
+ /*
+ * Enable interrupt for this counter
+ */
+ armv7_pmnc_enable_intens(idx);
+
+ /*
+ * Enable counter
+ */
+ armv7_pmnc_enable_counter(idx);
+
+scorpion_out:
+ raw_spin_unlock_irqrestore(&pmu_lock, flags);
+}
+
+static struct arm_pmu scorpion_pmu = {
+ .handle_irq = armv7pmu_handle_irq,
+ .enable = scorpion_pmu_enable_event,
+ .disable = scorpion_pmu_disable_event,
+ .read_counter = armv7pmu_read_counter,
+ .write_counter = armv7pmu_write_counter,
+ .raw_event_mask = 0xFF,
+ .get_event_idx = armv7pmu_get_event_idx,
+ .start = armv7pmu_start,
+ .stop = armv7pmu_stop,
+ .max_period = (1LLU << 32) - 1,
+};
+
+static const struct arm_pmu *__init armv7_scorpion_pmu_init(void)
+{
+ scorpion_pmu.id = ARM_PERF_PMU_ID_SCORPION;
+ scorpion_pmu.name = "ARMv7 Scorpion";
+ scorpion_pmu.cache_map = &armv7_scorpion_perf_cache_map;
+ scorpion_pmu.event_map = &armv7_scorpion_perf_map;
+ scorpion_pmu.num_events = armv7_reset_read_pmnc();
+ scorpion_clear_pmuregs();
+ return &scorpion_pmu;
+}
+
+static const struct arm_pmu *__init armv7_scorpionmp_pmu_init(void)
+{
+ scorpion_pmu.id = ARM_PERF_PMU_ID_SCORPIONMP;
+ scorpion_pmu.name = "ARMv7 Scorpion-MP";
+ scorpion_pmu.cache_map = &armv7_scorpion_perf_cache_map;
+ scorpion_pmu.event_map = &armv7_scorpion_perf_map;
+ scorpion_pmu.num_events = armv7_reset_read_pmnc();
+ scorpion_clear_pmuregs();
+ return &scorpion_pmu;
+}
+#else
+static const struct arm_pmu *__init scorpion_pmu_init(void)
+{
+ return NULL;
+}
+static const struct arm_pmu *__init scorpionmp_pmu_init(void)
+{
+ return NULL;
+}
+#endif /* CONFIG_CPU_V7 */
--
1.7.4.1
--
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