From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9408D6E1F5 for ; Tue, 16 Mar 2021 04:41:07 +0000 (UTC) Date: Tue, 16 Mar 2021 09:56:03 +0530 From: Anshuman Gupta Message-ID: <20210316042600.GC29018@intel.com> References: <20210121083432.526247-1-jigar.bhatt@intel.com> <20210312114332.3566599-1-jigar.bhatt@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210312114332.3566599-1-jigar.bhatt@intel.com> Subject: Re: [igt-dev] [PATCH i-g-t v8] tests/i915/i915_pm_dc: Add DC9 igt test List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" To: Jigar Bhatt Cc: igt-dev@lists.freedesktop.org List-ID: On 2021-03-12 at 17:13:32 +0530, Jigar Bhatt wrote: > DC9 igt test validation depends on DC{5,6} counters reset. > When Display Engine enters to DC9, it resets DMC f/w and DC5/DC6 counter. > We don't have a DC9 counter unlike DC{5,6}, > therefore this tests uses DC{5,6} counter reset method to validate DC9. > > v8: [Anshuman] > - Add support_dc6() to check whether a platform supports dc6 > > v7: [Anshuman] > - Skip if no support of DC6. > > v6: [Anshuman] > - assert for DC6 counter in setup_dc9_dpms. > - Move dpms_off() to test_dc9_dpms(). > > Signed-off-by: Jigar Bhatt > --- > tests/i915/i915_pm_dc.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 55 insertions(+) > > diff --git a/tests/i915/i915_pm_dc.c b/tests/i915/i915_pm_dc.c > index 30c6024..160602e 100644 > --- a/tests/i915/i915_pm_dc.c > +++ b/tests/i915/i915_pm_dc.c > @@ -384,6 +385,56 @@ static void test_dc_state_dpms(data_t *data, int dc_flag) > cleanup_dc_dpms(data); > } > > +static bool support_dc6(int debugfs_fd) > +{ > + char buf[4096]; > + > + igt_debugfs_simple_read(debugfs_fd, "i915_dmc_info", > + buf, sizeof(buf)); > + return strstr(buf, "DC5 -> DC6 count"); > +} > + > +static bool check_dc9(uint32_t debugfs_fd, int prev_dc, bool dc6_supported, int seconds) > +{ > +/* > + * since we do not have DC9 Counter, > + * so we rely on dc5/dc6 counter reset to check if Display Engine was in DC9. > +*/ > + return igt_wait(dc6_supported ? read_dc_counter(debugfs_fd, CHECK_DC6) > > + prev_dc : read_dc_counter(debugfs_fd, CHECK_DC5) > > + prev_dc, seconds, 100); We require to check the counter reset ? but this checks whether it is incrementaing. > +} > + > +static void setup_dc9_dpms(data_t *data, int prev_dc, bool dc6_supported) > +{ > + igt_disable_runtime_pm(); > + data->runtime_suspend_disabled = true; > + dpms_off(data); > + igt_skip_on_f(igt_wait(dc6_supported ? read_dc_counter(data->debugfs_fd, CHECK_DC6) > > + prev_dc : read_dc_counter(data->debugfs_fd, CHECK_DC5) > prev_dc, 3000, 100), > + "Unable to enters shallow DC states\n"); Next line should start with above line open parenthesis. > + dpms_on(data); > + data->runtime_suspend_disabled = false; > + igt_restore_runtime_pm(); > + igt_setup_runtime_pm(data->drm_fd); > +} > + > +static void test_dc9_dpms(data_t *data) > +{ > + require_dc_counter(data->debugfs_fd, CHECK_DC5); > + bool dc6_supported = support_dc6(data->debugfs_fd); > + > + setup_dc9_dpms(data, dc6_supported ? read_dc_counter(data->debugfs_fd, CHECK_DC6) : > + read_dc_counter(data->debugfs_fd, CHECK_DC5), dc6_supported); > + dpms_off(data); > + igt_assert_f(!check_dc9(data->debugfs_fd, dc6_supported ? > + read_dc_counter(data->debugfs_fd, CHECK_DC6) : > + read_dc_counter(data->debugfs_fd, CHECK_DC5), > + dc6_supported, 3000), "Not in DC9\n"); > + dpms_on(data); > +} > + > + > IGT_TEST_DESCRIPTION("These tests validate Display Power DC states"); > int main(int argc, char *argv[]) > { > @@ -449,6 +499,13 @@ int main(int argc, char *argv[]) > test_dc_state_dpms(&data, CHECK_DC6); > } > > + igt_describe("This test validates display engine entry to DC9 state"); > + igt_subtest("dc9-dpms") { > + igt_require_f(igt_pm_pc8_plus_residencies_enabled(data.msr_fd), > + "PC8+ residencies not supported\n"); > + test_dc9_dpms(&data); > + } > + > igt_fixture { > free(data.pwr_dmn_info); > close(data.debugfs_fd); > -- > 2.8.1 > _______________________________________________ igt-dev mailing list igt-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/igt-dev