From nobody Sat Feb 7 07:24:38 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1629822799638988.4635900435339; Tue, 24 Aug 2021 09:33:19 -0700 (PDT) Received: from localhost ([::1]:55614 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mIZMU-0002f0-Hh for importer@patchew.org; Tue, 24 Aug 2021 12:33:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55898) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mIZKQ-0008Ec-NQ; Tue, 24 Aug 2021 12:31:12 -0400 Received: from mail-qt1-x833.google.com ([2607:f8b0:4864:20::833]:41611) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mIZKO-0008Ue-14; Tue, 24 Aug 2021 12:31:10 -0400 Received: by mail-qt1-x833.google.com with SMTP id u21so14331769qtw.8; Tue, 24 Aug 2021 09:31:07 -0700 (PDT) Received: from rekt.ihost.com ([179.247.162.205]) by smtp.gmail.com with ESMTPSA id 75sm10951474qko.100.2021.08.24.09.31.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Aug 2021 09:31:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=+9zhb5pU5UdkcMt4NXPfAYOah6MErf8DGT2ptgvitXY=; b=WlKke5/DWX55QyofkZfmUdENYdJVX2BE9OA7jROcQUY0twUYoPcPi9a9AJAq7MaNr+ goJqhrYdJW8tmh/lJ65xjpaAGVpPzfh2t65aKeDdC/cr5jLIBQWuNtrqYu/n10TCd6k8 GOGmmRZKBWjMUzigA6pZw5P7++DVMvGcfE8O8sFCxFjAhm/Sm+px4++ttW+nfraH0fSH AGGjZXtq7TVYulkflWKlYn3zlhqHPYXSTzjgwJBElCwIxpxpmtmZrcBhzv0Tw4kpJ+F9 DO5NXv92Fc9EJDe1g33Ntmo/ca+8/REmudeQ3iBgCWMf11SwrY+FyV9YN4LZjG8PuJm0 TpYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=+9zhb5pU5UdkcMt4NXPfAYOah6MErf8DGT2ptgvitXY=; b=NY4t7w+rSPudQCCTuDlppvH7mwAj4F5Syy2GcOqCDfhFssqCKCN8cQBlZBzfOsGCH6 koGj92NBIJM7YBn9GHuOjGQJn8lTyjdp3+3hO322wDHrEtGPX0RGF5+s/CgbZ64yHECK t/5dRhItC5GQb0fCWnwO2pKVTIYG5HrPXK1Fo5np7WHE6lh5HjQDsvO2jzR7bgJA5qVu 7ZNp08NH9/0QSStv0Y4zcQouFZwRv44u6GG67Xuu4xoOzs9c+Pq7G4KNK+xOtuXh/JKM ylBmmpg/kFk328DyCvnhROtyv5y6XoxwnFlMtQFoe5lE5HrUSAIsBud1RZYLGVqZUpPC R2aQ== X-Gm-Message-State: AOAM530DhsuLj2zI7iajYVL6BqFc6paoQ237k/o8jNBbMAeG2NEfuL2S mAWYwzVljxhA/8MSvH3e+XXWXG7Pjqc= X-Google-Smtp-Source: ABdhPJyni2q2Py38suYeXeUvSABmg/iIoQ0ch+Qju+Z5qnC7+VSqRmWzqddhhouWOaSCEVUDOA/pZA== X-Received: by 2002:aed:3147:: with SMTP id 65mr295823qtg.233.1629822666679; Tue, 24 Aug 2021 09:31:06 -0700 (PDT) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Subject: [PATCH v2 08/16] target/ppc/power8_pmu.c: add PMC14/PMC56 counter freeze bits Date: Tue, 24 Aug 2021 13:30:24 -0300 Message-Id: <20210824163032.394099-9-danielhb413@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210824163032.394099-1-danielhb413@gmail.com> References: <20210824163032.394099-1-danielhb413@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::833; envelope-from=danielhb413@gmail.com; helo=mail-qt1-x833.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gustavo.romero@linaro.org, Daniel Henrique Barboza , richard.henderson@linaro.org, groug@kaod.org, qemu-ppc@nongnu.org, clg@kaod.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1629822801077100003 Content-Type: text/plain; charset="utf-8" We're missing two counter freeze bits that are used to further control how the PMCs behaves: MMCR0_FC14 and MMCR0_FC56. These bits can frozen PMCs separately: MMCR0_FC14 freezes PMCs 1 to 4 and MMCR0_FC56 freezes PMCs 5 and 6. Signed-off-by: Daniel Henrique Barboza --- target/ppc/cpu.h | 2 ++ target/ppc/power8_pmu.c | 25 ++++++++++++++++++++++--- 2 files changed, 24 insertions(+), 3 deletions(-) diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h index 60e5e1159a..105ee75a01 100644 --- a/target/ppc/cpu.h +++ b/target/ppc/cpu.h @@ -349,6 +349,8 @@ typedef struct ppc_v3_pate_t { #define MMCR0_EBE PPC_BIT(43) /* Perf Monitor EBB Enable */ #define MMCR0_FCECE PPC_BIT(38) /* FC on Enabled Cond or Event */ #define MMCR0_PMCC PPC_BITMASK(44, 45) /* PMC Control */ +#define MMCR0_FC14 PPC_BIT(58) +#define MMCR0_FC56 PPC_BIT(59) =20 #define MMCR1_PMC1SEL_SHIFT (63 - 39) #define MMCR1_PMC1SEL PPC_BITMASK(32, 39) diff --git a/target/ppc/power8_pmu.c b/target/ppc/power8_pmu.c index 9154fca5fd..4545fe7810 100644 --- a/target/ppc/power8_pmu.c +++ b/target/ppc/power8_pmu.c @@ -58,6 +58,15 @@ static uint8_t get_PMC_event(CPUPPCState *env, int sprn) return event; } =20 +static bool pmc_is_running(CPUPPCState *env, int sprn) +{ + if (sprn < SPR_POWER_PMC5) { + return !(env->spr[SPR_POWER_MMCR0] & MMCR0_FC14); + } + + return !(env->spr[SPR_POWER_MMCR0] & MMCR0_FC56); +} + static void update_programmable_PMC_reg(CPUPPCState *env, int sprn, uint64_t time_delta) { @@ -90,13 +99,19 @@ static void update_cycles_PMCs(CPUPPCState *env) { uint64_t now =3D qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); uint64_t time_delta =3D now - env->pmu_base_time; + bool PMC14_running =3D !(env->spr[SPR_POWER_MMCR0] & MMCR0_FC14); + bool PMC6_running =3D !(env->spr[SPR_POWER_MMCR0] & MMCR0_FC56); int sprn; =20 - for (sprn =3D SPR_POWER_PMC1; sprn < SPR_POWER_PMC5; sprn++) { - update_programmable_PMC_reg(env, sprn, time_delta); + if (PMC14_running) { + for (sprn =3D SPR_POWER_PMC1; sprn < SPR_POWER_PMC5; sprn++) { + update_programmable_PMC_reg(env, sprn, time_delta); + } } =20 - update_PMC_PM_CYC(env, SPR_POWER_PMC6, time_delta); + if (PMC6_running) { + update_PMC_PM_CYC(env, SPR_POWER_PMC6, time_delta); + } } =20 void helper_store_mmcr0(CPUPPCState *env, target_ulong value) @@ -136,6 +151,10 @@ static bool pmc_counting_insns(CPUPPCState *env, int s= prn, { bool ret =3D false; =20 + if (!pmc_is_running(env, sprn)) { + return false; + } + if (sprn =3D=3D SPR_POWER_PMC5) { return true; } --=20 2.31.1