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Thu, 12 Mar 2020 15:44:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1584027870; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=UlELUc8BfECpYBnXZ2RZ4Fo7yfR5/2QrlCwiuzUqtRs=; b=NlSHSuWHFwcrSaanFL5So8UuGXLPugoyjfwBFNfRhfCR4tMql7IDeUB2lAU0+uXiiuZ/bn MXq36OnMjGl7cHYG7rIZu0AcBpY7TV9LGRAjCkhrx4k1pxbZv2Kba8vKtzqVX5sE+eOnrb LTSLbc/Q/hnwUXZzWT+vZXaYgTKOIAo= X-MC-Unique: JBZ2QMoqOS-I3-uZSalM6w-1 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 PATCH v3 08/12] arm: pmu: Test SW_INCR event count Date: Thu, 12 Mar 2020 16:42:57 +0100 Message-Id: <20200312154301.9130-9-eric.auger@redhat.com> In-Reply-To: <20200312154301.9130-1-eric.auger@redhat.com> References: <20200312154301.9130-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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, alexandru.elisei@arm.com, andre.przywara@arm.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Add tests dedicated to SW_INCR event counting. Signed-off-by: Eric Auger --- v3: new - Formerly in chained counter tests but as QEMU does not support chained counters, the whole test was failing. Peter split the test. --- arm/pmu.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ arm/unittests.cfg | 6 ++++++ 2 files changed, 53 insertions(+) diff --git a/arm/pmu.c b/arm/pmu.c index 45dccf7..c954c71 100644 --- a/arm/pmu.c +++ b/arm/pmu.c @@ -140,6 +140,7 @@ static void test_event_introspection(void) {} static void test_event_counter_config(void) {} static void test_basic_event_count(void) {} static void test_mem_access(void) {} +static void test_sw_incr(void) {} =20 #elif defined(__aarch64__) #define ID_AA64DFR0_PERFMON_SHIFT 8 @@ -464,6 +465,48 @@ static void test_mem_access(void) read_sysreg(pmovsclr_el0)); } =20 +static void test_sw_incr(void) +{ + uint32_t events[] =3D {SW_INCR, SW_INCR}; + int i; + + if (!satisfy_prerequisites(events, ARRAY_SIZE(events))) + return; + + pmu_reset(); + + write_regn_el0(pmevtyper, 0, SW_INCR | PMEVTYPER_EXCLUDE_EL0); + write_regn_el0(pmevtyper, 1, SW_INCR | PMEVTYPER_EXCLUDE_EL0); + /* enable counters #0 and #1 */ + write_sysreg_s(0x3, PMCNTENSET_EL0); + + write_regn_el0(pmevcntr, 0, PRE_OVERFLOW); + + for (i =3D 0; i < 100; i++) + write_sysreg(0x1, pmswinc_el0); + + report_info("SW_INCR counter #0 has value %ld", read_regn_el0(pmevcntr, 0= )); + report(read_regn_el0(pmevcntr, 0) =3D=3D PRE_OVERFLOW, + "PWSYNC does not increment if PMCR.E is unset"); + + pmu_reset(); + + write_regn_el0(pmevcntr, 0, PRE_OVERFLOW); + write_sysreg_s(0x3, PMCNTENSET_EL0); + set_pmcr(pmu.pmcr_ro | PMU_PMCR_E); + + for (i =3D 0; i < 100; i++) + write_sysreg(0x3, pmswinc_el0); + + report(read_regn_el0(pmevcntr, 0) =3D=3D 84, "counter #1 after + 100 SW_= INCR"); + report(read_regn_el0(pmevcntr, 1) =3D=3D 100, + "counter #0 after + 100 SW_INCR"); + report_info("counter values after 100 SW_INCR #0=3D%ld #1=3D%ld", + read_regn_el0(pmevcntr, 0), read_regn_el0(pmevcntr, 1)); + report(read_sysreg(pmovsclr_el0) =3D=3D 0x1, + "overflow reg after 100 SW_INCR"); +} + #endif =20 /* @@ -650,6 +693,10 @@ int main(int argc, char *argv[]) report_prefix_push(argv[1]); test_mem_access(); report_prefix_pop(); + } else if (strcmp(argv[1], "pmu-sw-incr") =3D=3D 0) { + report_prefix_push(argv[1]); + test_sw_incr(); + report_prefix_pop(); } else { report_abort("Unknown sub-test '%s'", argv[1]); } diff --git a/arm/unittests.cfg b/arm/unittests.cfg index 32ab8c6..175afe6 100644 --- a/arm/unittests.cfg +++ b/arm/unittests.cfg @@ -90,6 +90,12 @@ groups =3D pmu arch =3D arm64 extra_params =3D -append 'pmu-mem-access' =20 +[pmu-sw-incr] +file =3D pmu.flat +groups =3D pmu +arch =3D arm64 +extra_params =3D -append 'pmu-sw-incr' + # Test PMU support (TCG) with -icount IPC=3D1 #[pmu-tcg-icount-1] #file =3D pmu.flat --=20 2.20.1