From patchwork Fri Dec 6 17:27:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 1205227 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="GUPCMfIK"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47V0WR1gRqz9sPh for ; Sat, 7 Dec 2019 04:51:13 +1100 (AEDT) Received: from localhost ([::1]:42558 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1idHl0-0002Lm-Nq for incoming@patchwork.ozlabs.org; Fri, 06 Dec 2019 12:51:10 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:44453) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1idHOU-0001j6-RR for qemu-devel@nongnu.org; Fri, 06 Dec 2019 12:27:55 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1idHOT-0003JT-M7 for qemu-devel@nongnu.org; Fri, 06 Dec 2019 12:27:54 -0500 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:39011 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1idHOT-0003H3-Dc for qemu-devel@nongnu.org; Fri, 06 Dec 2019 12:27:53 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1575653272; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yqTunPkxwrcyQFOxDUNzfOp1hv1TJYsH7F1IJZPhTJo=; b=GUPCMfIKF/NWK5pNJR+nw4t8tI35nE0kVEHbQBwq3GIctmI2xGM1ydTOAYXVFGOXu7Lkan 4F6NA3RqJTvSWP41bQqzaW5Jw2O2Ym/jyBsUmDCFPNaeJ4T4jiY9YQeFz5DzzjmgQLNsGY WHzQc/CIyfBYdiU/9dXuX33hG0tAtMw= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-64-RwGInhliOwmo9mMSBC3FqA-1; Fri, 06 Dec 2019 12:27:48 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 35E9A1005502; Fri, 6 Dec 2019 17:27:47 +0000 (UTC) Received: from laptop.redhat.com (ovpn-116-117.ams2.redhat.com [10.36.116.117]) by smtp.corp.redhat.com (Postfix) with ESMTP id 540D86CE40; Fri, 6 Dec 2019 17:27:42 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, maz@kernel.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, qemu-devel@nongnu.org, qemu-arm@nongnu.org Subject: [kvm-unit-tests RFC 03/10] pmu: Add a pmu struct Date: Fri, 6 Dec 2019 18:27:17 +0100 Message-Id: <20191206172724.947-4-eric.auger@redhat.com> In-Reply-To: <20191206172724.947-1-eric.auger@redhat.com> References: <20191206172724.947-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-MC-Unique: RwGInhliOwmo9mMSBC3FqA-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.61 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: peter.maydell@linaro.org, andrew.murray@arm.com, drjones@redhat.com, andre.przywara@arm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This struct aims at storing information potentially used by all tests such as the pmu version, the read-only part of the PMCR, the number of implemented event counters, ... Signed-off-by: Eric Auger --- arm/pmu.c | 29 ++++++++++++++++++++++++----- 1 file changed, 24 insertions(+), 5 deletions(-) diff --git a/arm/pmu.c b/arm/pmu.c index 2ad6469..8e95251 100644 --- a/arm/pmu.c +++ b/arm/pmu.c @@ -33,7 +33,15 @@ #define NR_SAMPLES 10 -static unsigned int pmu_version; +struct pmu { + unsigned int version; + unsigned int nb_implemented_counters; + uint32_t pmcr_ro; +}; + +static struct pmu pmu; + + #if defined(__arm__) #define ID_DFR0_PERFMON_SHIFT 24 #define ID_DFR0_PERFMON_MASK 0xf @@ -265,7 +273,7 @@ static bool check_cpi(int cpi) static void pmccntr64_test(void) { #ifdef __arm__ - if (pmu_version == 0x3) { + if (pmu.version == 0x3) { if (ERRATA(9e3f7a296940)) { write_sysreg(0xdead, PMCCNTR64); report("pmccntr64", read_sysreg(PMCCNTR64) == 0xdead); @@ -278,9 +286,20 @@ static void pmccntr64_test(void) /* Return FALSE if no PMU found, otherwise return TRUE */ static bool pmu_probe(void) { - pmu_version = get_pmu_version(); - report_info("PMU version: %d", pmu_version); - return pmu_version != 0 && pmu_version != 0xf; + uint32_t pmcr; + + pmu.version = get_pmu_version(); + report_info("PMU version: %d", pmu.version); + + if (pmu.version == 0 || pmu.version == 0xF) + return false; + + pmcr = get_pmcr(); + pmu.pmcr_ro = pmcr & 0xFFFFFF80; + pmu.nb_implemented_counters = (pmcr >> PMU_PMCR_N_SHIFT) & PMU_PMCR_N_MASK; + report_info("Implements %d event counters", pmu.nb_implemented_counters); + + return true; } int main(int argc, char *argv[])