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qemu/target/ppc/power8-pmu.h

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target/ppc: introduce PMUEventType and PMU overflow timers This patch starts an IBM Power8+ compatible PMU implementation by adding the representation of PMU events that we are going to sample, PMUEventType. This enum represents a Perf event that is being sampled by a specific counter 'sprn'. Events that aren't available (i.e. no event was set in MMCR1) will be of type 'PMU_EVENT_INVALID'. Events that are inactive due to frozen counter bits state are of type 'PMU_EVENT_INACTIVE'. Other types added in this patch are PMU_EVENT_CYCLES and PMU_EVENT_INSTRUCTIONS. More types will be added later on. Let's also add the required PMU cycle overflow timers. They will be used to trigger cycle overflows when cycle events are being sampled. This timer will call cpu_ppc_pmu_timer_cb(), which in turn calls fire_PMC_interrupt(). Both functions are stubs that will be implemented later on when EBB support is added. Two new helper files are created to host this new logic. cpu_ppc_pmu_init() will init all overflow timers during CPU init time. Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20211201151734.654994-2-danielhb413@gmail.com> Signed-off-by: Cédric Le Goater <clg@kaod.org>
2021-12-17 19:57:18 +03:00
/*
* PMU emulation helpers for TCG IBM POWER chips
*
* Copyright IBM Corp. 2021
*
* Authors:
* Daniel Henrique Barboza <danielhb413@gmail.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef POWER8_PMU
#define POWER8_PMU
target/ppc: Cache per-pmc insn and cycle count settings This is the combination of frozen bit and counter type, on a per counter basis. So far this is only used by HFLAGS_INSN_CNT, but will be used more later. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> [danielhb: fixed PMC4 cyc_cnt shift, insn run latch code, MMCR0_FC handling, "PMC[1-6]" comment] Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20220103224746.167831-2-danielhb413@gmail.com> Signed-off-by: Cédric Le Goater <clg@kaod.org>
2022-01-04 09:55:34 +03:00
#if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
target/ppc: make power8-pmu.c CONFIG_TCG only This is an exclusive TCG helper. Gating it with CONFIG_TCG and changing meson.build accordingly will prevent problems --disable-tcg and --disable-linux-user later on. We're also changing the uses of !kvm_enabled() to tcg_enabled() to avoid adding "defined(CONFIG_TCG)" ifdefs, since tcg_enabled() will be defaulted to false with --disable-tcg and the block will always be skipped. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20220225101140.1054160-2-danielhb413@gmail.com> Signed-off-by: Cédric Le Goater <clg@kaod.org>
2022-03-02 08:51:36 +03:00
void cpu_ppc_pmu_init(CPUPPCState *env);
target/ppc: Cache per-pmc insn and cycle count settings This is the combination of frozen bit and counter type, on a per counter basis. So far this is only used by HFLAGS_INSN_CNT, but will be used more later. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> [danielhb: fixed PMC4 cyc_cnt shift, insn run latch code, MMCR0_FC handling, "PMC[1-6]" comment] Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20220103224746.167831-2-danielhb413@gmail.com> Signed-off-by: Cédric Le Goater <clg@kaod.org>
2022-01-04 09:55:34 +03:00
void pmu_update_summaries(CPUPPCState *env);
#else
target/ppc: make power8-pmu.c CONFIG_TCG only This is an exclusive TCG helper. Gating it with CONFIG_TCG and changing meson.build accordingly will prevent problems --disable-tcg and --disable-linux-user later on. We're also changing the uses of !kvm_enabled() to tcg_enabled() to avoid adding "defined(CONFIG_TCG)" ifdefs, since tcg_enabled() will be defaulted to false with --disable-tcg and the block will always be skipped. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20220225101140.1054160-2-danielhb413@gmail.com> Signed-off-by: Cédric Le Goater <clg@kaod.org>
2022-03-02 08:51:36 +03:00
static inline void cpu_ppc_pmu_init(CPUPPCState *env) { }
target/ppc: Cache per-pmc insn and cycle count settings This is the combination of frozen bit and counter type, on a per counter basis. So far this is only used by HFLAGS_INSN_CNT, but will be used more later. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> [danielhb: fixed PMC4 cyc_cnt shift, insn run latch code, MMCR0_FC handling, "PMC[1-6]" comment] Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20220103224746.167831-2-danielhb413@gmail.com> Signed-off-by: Cédric Le Goater <clg@kaod.org>
2022-01-04 09:55:34 +03:00
static inline void pmu_update_summaries(CPUPPCState *env) { }
#endif
target/ppc: introduce PMUEventType and PMU overflow timers This patch starts an IBM Power8+ compatible PMU implementation by adding the representation of PMU events that we are going to sample, PMUEventType. This enum represents a Perf event that is being sampled by a specific counter 'sprn'. Events that aren't available (i.e. no event was set in MMCR1) will be of type 'PMU_EVENT_INVALID'. Events that are inactive due to frozen counter bits state are of type 'PMU_EVENT_INACTIVE'. Other types added in this patch are PMU_EVENT_CYCLES and PMU_EVENT_INSTRUCTIONS. More types will be added later on. Let's also add the required PMU cycle overflow timers. They will be used to trigger cycle overflows when cycle events are being sampled. This timer will call cpu_ppc_pmu_timer_cb(), which in turn calls fire_PMC_interrupt(). Both functions are stubs that will be implemented later on when EBB support is added. Two new helper files are created to host this new logic. cpu_ppc_pmu_init() will init all overflow timers during CPU init time. Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20211201151734.654994-2-danielhb413@gmail.com> Signed-off-by: Cédric Le Goater <clg@kaod.org>
2021-12-17 19:57:18 +03:00
#endif
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