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Ruhl" To: platform-driver-x86@vger.kernel.org, intel-xe@lists.freedesktop.org, hansg@kernel.org, ilpo.jarvinen@linux.intel.com, matthew.brost@intel.com, rodrigo.vivi@intel.com, thomas.hellstrom@linux.intel.com, airlied@gmail.com, simona@ffwll.ch, david.e.box@linux.intel.com, anoop.c.vijay@intel.com, badal.nilawar@intel.com, matthew.d.roper@intel.com, james.ausmus@intel.com, karthik.poosa@intel.com Subject: [PATCH v4 09/18] drm/xe/vsec: Use correct pm state get Date: Tue, 1 Sep 2026 12:27:44 -0700 Message-ID: <20260901192736.626777-29-michael.j.ruhl@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260901192736.626777-20-michael.j.ruhl@intel.com> References: <20260901192736.626777-20-michael.j.ruhl@intel.com> Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Crashlog needs to be collected at all times. The current pm check assumes telemetry only. Update read path to enable device for crashlog instances. Signed-off-by: Michael J. Ruhl Fixes: 2c402a801c19 ("platform/x86/intel/pmt: support BMG crashlog") --- drivers/gpu/drm/xe/xe_vsec.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_vsec.c b/drivers/gpu/drm/xe/xe_vsec.c index dd7723ba6c1c..468a221378fa 100644 --- a/drivers/gpu/drm/xe/xe_vsec.c +++ b/drivers/gpu/drm/xe/xe_vsec.c @@ -145,6 +145,7 @@ int xe_pmt_telem_read(struct device *dev, u32 guid, u64 *data, loff_t user_offse { struct xe_device *xe = kdev_to_xe_device(dev); void __iomem *telem_addr = xe->mmio.regs + BMG_TELEMETRY_OFFSET; + u32 cap_type = FIELD_GET(GUID_CAP_TYPE, guid); u32 mem_region; u32 offset; int ret; @@ -158,9 +159,18 @@ int xe_pmt_telem_read(struct device *dev, u32 guid, u64 *data, loff_t user_offse telem_addr += offset + user_offset; - /* indicate that we are not at an appropriate power level */ - if (!xe_pm_runtime_get_if_active(xe)) - return -ENODATA; + /* Always allow crashlog. Telemetry, only when powered */ + switch (cap_type) { + case CRASHLOG: + xe_pm_runtime_get(xe); + break; + case TELEMETRY: + if (!xe_pm_runtime_get_if_active(xe)) + return -ENODATA; + break; + case WATCHER: + return -EINVAL; + } mutex_lock(&xe->pmt.lock); -- 2.43.0