From: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH 08/14] drm/i915/guc/slpc: Add get max/min freq hooks
Date: Wed, 21 Jul 2021 09:11:14 -0700 [thread overview]
Message-ID: <20210721161120.24610-9-vinay.belgaumkar@intel.com> (raw)
In-Reply-To: <20210721161120.24610-1-vinay.belgaumkar@intel.com>
Add helpers to read the min/max frequency being used
by SLPC. This is done by send a H2G command which forces
SLPC to update the shared data struct which can then be
read.
v2: Address review comments (Michal W)
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Signed-off-by: Sundaresan Sujaritha <sujaritha.sundaresan@intel.com>
---
drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c | 52 +++++++++++++++++++++
drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h | 2 +
2 files changed, 54 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
index b40c39ba4049..c1cf8d46e360 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
@@ -290,6 +290,32 @@ int intel_guc_slpc_set_max_freq(struct intel_guc_slpc *slpc, u32 val)
return ret;
}
+/**
+ * intel_guc_slpc_get_max_freq() - Get max frequency limit for SLPC.
+ * @slpc: pointer to intel_guc_slpc.
+ * @val: pointer to val which will hold max frequency (MHz)
+ *
+ * This function will invoke GuC SLPC action to read the max frequency
+ * limit for unslice.
+ *
+ * Return: 0 on success, non-zero error code on failure.
+ */
+int intel_guc_slpc_get_max_freq(struct intel_guc_slpc *slpc, u32 *val)
+{
+ intel_wakeref_t wakeref;
+ struct drm_i915_private *i915 = guc_to_gt(slpc_to_guc(slpc))->i915;
+ int ret = 0;
+
+ with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+ /* Force GuC to update task data */
+ slpc_query_task_state(slpc);
+
+ *val = slpc_decode_max_freq(slpc);
+ }
+
+ return ret;
+}
+
/**
* intel_guc_slpc_set_min_freq() - Set min frequency limit for SLPC.
* @slpc: pointer to intel_guc_slpc.
@@ -322,6 +348,32 @@ int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val)
return ret;
}
+/**
+ * intel_guc_slpc_get_min_freq() - Get min frequency limit for SLPC.
+ * @slpc: pointer to intel_guc_slpc.
+ * @val: pointer to val which will hold min frequency (MHz)
+ *
+ * This function will invoke GuC SLPC action to read the min frequency
+ * limit for unslice.
+ *
+ * Return: 0 on success, non-zero error code on failure.
+ */
+int intel_guc_slpc_get_min_freq(struct intel_guc_slpc *slpc, u32 *val)
+{
+ intel_wakeref_t wakeref;
+ struct drm_i915_private *i915 = guc_to_gt(slpc_to_guc(slpc))->i915;
+ int ret = 0;
+
+ with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+ /* Force GuC to update task data */
+ slpc_query_task_state(slpc);
+
+ *val = slpc_decode_min_freq(slpc);
+ }
+
+ return ret;
+}
+
/*
* intel_guc_slpc_enable() - Start SLPC
* @slpc: pointer to intel_guc_slpc.
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
index 3a1a7eaafc12..627c71a95777 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
@@ -32,5 +32,7 @@ int intel_guc_slpc_enable(struct intel_guc_slpc *slpc);
void intel_guc_slpc_fini(struct intel_guc_slpc *slpc);
int intel_guc_slpc_set_max_freq(struct intel_guc_slpc *slpc, u32 val);
int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val);
+int intel_guc_slpc_get_max_freq(struct intel_guc_slpc *slpc, u32 *val);
+int intel_guc_slpc_get_min_freq(struct intel_guc_slpc *slpc, u32 *val);
#endif
--
2.25.0
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next prev parent reply other threads:[~2021-07-21 16:12 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 16:11 [Intel-gfx] [PATCH v2 00/14] drm/i915/guc: Enable GuC based power management features Vinay Belgaumkar
2021-07-21 16:11 ` [Intel-gfx] [PATCH 01/14] drm/i915/guc: SQUASHED PATCH - DO NOT REVIEW Vinay Belgaumkar
2021-07-21 16:11 ` [Intel-gfx] [PATCH 02/14] drm/i915/guc/slpc: Initial definitions for SLPC Vinay Belgaumkar
2021-07-21 17:24 ` Michal Wajdeczko
2021-07-22 0:56 ` Belgaumkar, Vinay
2021-07-21 16:11 ` [Intel-gfx] [PATCH 03/14] drm/i915/guc/slpc: Gate Host RPS when SLPC is enabled Vinay Belgaumkar
2021-07-21 16:11 ` [Intel-gfx] [PATCH 04/14] drm/i915/guc/slpc: Adding SLPC communication interfaces Vinay Belgaumkar
2021-07-21 17:25 ` Michal Wajdeczko
2021-07-23 19:26 ` Belgaumkar, Vinay
2021-07-21 16:11 ` [Intel-gfx] [PATCH 05/14] drm/i915/guc/slpc: Allocate, initialize and release SLPC Vinay Belgaumkar
2021-07-21 17:26 ` Michal Wajdeczko
2021-07-23 19:30 ` Belgaumkar, Vinay
2021-07-21 16:11 ` [Intel-gfx] [PATCH 06/14] drm/i915/guc/slpc: Enable SLPC and add related H2G events Vinay Belgaumkar
2021-07-21 17:38 ` Michal Wajdeczko
2021-07-23 19:28 ` Belgaumkar, Vinay
2021-07-21 23:44 ` kernel test robot
2021-07-22 2:36 ` kernel test robot
2021-07-22 18:07 ` kernel test robot
2021-07-22 18:07 ` [Intel-gfx] [RFC PATCH] drm/i915/guc/slpc: slpc_decode_min_freq() can be static kernel test robot
2021-07-23 13:04 ` [Intel-gfx] [PATCH 06/14] drm/i915/guc/slpc: Enable SLPC and add related H2G events kernel test robot
2021-07-24 16:30 ` kernel test robot
2021-07-21 16:11 ` [Intel-gfx] [PATCH 07/14] drm/i915/guc/slpc: Add methods to set min/max frequency Vinay Belgaumkar
2021-07-21 17:42 ` Michal Wajdeczko
2021-07-23 19:35 ` Belgaumkar, Vinay
2021-07-21 16:11 ` Vinay Belgaumkar [this message]
2021-07-21 18:00 ` [Intel-gfx] [PATCH 08/14] drm/i915/guc/slpc: Add get max/min freq hooks Michal Wajdeczko
2021-07-23 19:43 ` Belgaumkar, Vinay
2021-07-21 16:11 ` [Intel-gfx] [PATCH 09/14] drm/i915/guc/slpc: Add debugfs for SLPC info Vinay Belgaumkar
2021-07-21 18:05 ` Michal Wajdeczko
2021-07-23 19:49 ` Belgaumkar, Vinay
2021-07-22 1:29 ` kernel test robot
2021-07-24 0:31 ` kernel test robot
2021-07-24 0:31 ` [Intel-gfx] [RFC PATCH] drm/i915/guc/slpc: intel_eval_slpc_support() can be static kernel test robot
2021-07-25 2:57 ` [Intel-gfx] [PATCH 09/14] drm/i915/guc/slpc: Add debugfs for SLPC info kernel test robot
2021-07-21 16:11 ` [Intel-gfx] [PATCH 10/14] drm/i915/guc/slpc: Enable ARAT timer interrupt Vinay Belgaumkar
2021-07-21 16:11 ` [Intel-gfx] [PATCH 11/14] drm/i915/guc/slpc: Cache platform frequency limits Vinay Belgaumkar
2021-07-21 18:09 ` Michal Wajdeczko
2021-07-23 22:25 ` Belgaumkar, Vinay
2021-07-21 16:11 ` [Intel-gfx] [PATCH 12/14] drm/i915/guc/slpc: Sysfs hooks for SLPC Vinay Belgaumkar
2021-07-21 18:13 ` Michal Wajdeczko
2021-07-23 22:28 ` Belgaumkar, Vinay
2021-07-21 16:11 ` [Intel-gfx] [PATCH 13/14] drm/i915/guc/slpc: Add SLPC selftest Vinay Belgaumkar
2021-07-21 16:11 ` [Intel-gfx] [PATCH 14/14] drm/i915/guc/rc: Setup and enable GUCRC feature Vinay Belgaumkar
2021-07-21 18:21 ` Michal Wajdeczko
2021-07-23 22:29 ` Belgaumkar, Vinay
2021-07-21 20:12 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915/guc: Enable GuC based power management features Patchwork
2021-07-21 20:14 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-07-21 20:42 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-07-22 1:37 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2021-07-28 21:11 [Intel-gfx] [PATCH v4 00/14] drm/i915/guc/slpc: " Vinay Belgaumkar
2021-07-28 21:11 ` [Intel-gfx] [PATCH 08/14] drm/i915/guc/slpc: Add get max/min freq hooks Vinay Belgaumkar
2021-07-30 2:00 [Intel-gfx] [PATCH v5 00/14] drm/i915/guc/slpc: Enable GuC based power management features Vinay Belgaumkar
2021-07-30 2:01 ` [Intel-gfx] [PATCH 08/14] drm/i915/guc/slpc: Add get max/min freq hooks Vinay Belgaumkar
2021-07-30 20:21 [Intel-gfx] [PATCH v6 00/14] drm/i915/guc/slpc: Enable GuC based power management features Vinay Belgaumkar
2021-07-30 20:21 ` [Intel-gfx] [PATCH 08/14] drm/i915/guc/slpc: Add get max/min freq hooks Vinay Belgaumkar
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