[PATCH] drm/i915/GuC: Combine the two kernel parameter into one

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Replace i915.enable_guc_loading and i915.enable_guc_submission
with a single parameter - i915.enable_guc. Where:

-1 : Platform default (Only load GuC)
0 : Do not use GuC
1 : Load GuC, do not use Command Submission through GuC
2 : Load and use GuC for Command Submission

Cc: Tvrtko Ursulin <tcrtko.erdulin@xxxxxxxxx>
Cc: Jeff Mcgee <jeff.mcgee@xxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_guc_submission.c | 16 +++++++++---
 drivers/gpu/drm/i915/i915_params.c         | 17 +++++--------
 drivers/gpu/drm/i915/i915_params.h         |  3 +--
 drivers/gpu/drm/i915/intel_guc.h           |  2 ++
 drivers/gpu/drm/i915/intel_guc_loader.c    | 39 +++++++++++++++++++-----------
 drivers/gpu/drm/i915/intel_lrc.c           | 14 ++++++++---
 6 files changed, 56 insertions(+), 35 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 7809acf..a5ef268 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -1471,13 +1471,15 @@ int i915_guc_submission_init(struct drm_i915_private *dev_priv)
 	const size_t poolsize = GUC_MAX_GPU_CONTEXTS * ctxsize;
 	const size_t gemsize = round_up(poolsize, PAGE_SIZE);
 	struct intel_guc *guc = &dev_priv->guc;
+	struct intel_uc_fw *guc_fw = &dev_priv->guc.guc_fw;
+
 	struct i915_vma *vma;
 
 	/* Wipe bitmap & delete client in case of reinitialisation */
 	bitmap_clear(guc->doorbell_bitmap, 0, GUC_MAX_DOORBELLS);
 	i915_guc_submission_disable(dev_priv);
 
-	if (!i915.enable_guc_submission)
+	if (!guc_fw->enable_guc_submission)
 		return 0; /* not enabled  */
 
 	if (guc->ctx_pool_vma)
@@ -1629,7 +1631,9 @@ void i915_guc_capture_logs(struct drm_i915_private *dev_priv)
 
 void i915_guc_flush_logs(struct drm_i915_private *dev_priv)
 {
-	if (!i915.enable_guc_submission || (i915.guc_log_level < 0))
+	struct intel_uc_fw *guc_fw = &dev_priv->guc.guc_fw;
+
+	if (!guc_fw->enable_guc_submission || (i915.guc_log_level < 0))
 		return;
 
 	/* First disable the interrupts, will be renabled afterwards */
@@ -1649,7 +1653,9 @@ void i915_guc_flush_logs(struct drm_i915_private *dev_priv)
 
 void i915_guc_unregister(struct drm_i915_private *dev_priv)
 {
-	if (!i915.enable_guc_submission)
+	struct intel_uc_fw *guc_fw = &dev_priv->guc.guc_fw;
+
+	if (!guc_fw->enable_guc_submission)
 		return;
 
 	mutex_lock(&dev_priv->drm.struct_mutex);
@@ -1659,7 +1665,9 @@ void i915_guc_unregister(struct drm_i915_private *dev_priv)
 
 void i915_guc_register(struct drm_i915_private *dev_priv)
 {
-	if (!i915.enable_guc_submission)
+	struct intel_uc_fw *guc_fw = &dev_priv->guc.guc_fw;
+
+	if (!guc_fw->enable_guc_submission)
 		return;
 
 	mutex_lock(&dev_priv->drm.struct_mutex);
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index 629e433..4600f83 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -56,8 +56,7 @@ struct i915_params i915 __read_mostly = {
 	.verbose_state_checks = 1,
 	.nuclear_pageflip = 0,
 	.edp_vswing = 0,
-	.enable_guc_loading = 0,
-	.enable_guc_submission = 0,
+	.enable_guc = 0,
 	.guc_log_level = -1,
 	.enable_dp_mst = true,
 	.inject_load_failure = 0,
@@ -215,15 +214,11 @@ MODULE_PARM_DESC(edp_vswing,
 		 "(0=use value from vbt [default], 1=low power swing(200mV),"
 		 "2=default swing(400mV))");
 
-module_param_named_unsafe(enable_guc_loading, i915.enable_guc_loading, int, 0400);
-MODULE_PARM_DESC(enable_guc_loading,
-		"Enable GuC firmware loading "
-		"(-1=auto, 0=never [default], 1=if available, 2=required)");
-
-module_param_named_unsafe(enable_guc_submission, i915.enable_guc_submission, int, 0400);
-MODULE_PARM_DESC(enable_guc_submission,
-		"Enable GuC submission "
-		"(-1=auto, 0=never [default], 1=if available, 2=required)");
+module_param_named_unsafe(enable_guc, i915.enable_guc, int, 0400);
+MODULE_PARM_DESC(enable_guc,
+		"Enable GuC firmware loading and loading and submission"
+		"(-1=auto [default], 0=do not use GuC, 1=load only,"
+		"2=loading and submission)");
 
 module_param_named(guc_log_level, i915.guc_log_level, int, 0400);
 MODULE_PARM_DESC(guc_log_level,
diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
index 94efc89..d235595 100644
--- a/drivers/gpu/drm/i915/i915_params.h
+++ b/drivers/gpu/drm/i915/i915_params.h
@@ -45,8 +45,7 @@ struct i915_params {
 	int enable_ips;
 	int invert_brightness;
 	int enable_cmd_parser;
-	int enable_guc_loading;
-	int enable_guc_submission;
+	int enable_guc;
 	int guc_log_level;
 	int use_mmio_flip;
 	int mmio_debug;
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index 67a500c..1131a73 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -114,6 +114,8 @@ struct intel_uc_fw {
 	struct drm_i915_gem_object *uc_fw_obj;
 	enum intel_uc_fw_status fetch_status;
 	enum intel_uc_fw_status load_status;
+	bool enable_guc_loading;
+	bool enable_guc_submission;
 
 	uint16_t major_ver_wanted;
 	uint16_t minor_ver_wanted;
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index 11e3bbb..621f588 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -189,6 +189,7 @@ static u32 get_core_family(struct drm_i915_private *dev_priv)
 static void guc_params_init(struct drm_i915_private *dev_priv)
 {
 	struct intel_guc *guc = &dev_priv->guc;
+	struct intel_uc_fw *guc_fw = &dev_priv->guc.guc_fw;
 	u32 params[GUC_CTL_MAX_DWORDS];
 	int i;
 
@@ -226,7 +227,7 @@ static void guc_params_init(struct drm_i915_private *dev_priv)
 	}
 
 	/* If GuC submission is enabled, set up additional parameters here */
-	if (i915.enable_guc_submission) {
+	if (guc_fw->enable_guc_submission) {
 		u32 pgs = i915_ggtt_offset(dev_priv->guc.ctx_pool_vma);
 		u32 ctx_in_16 = GUC_MAX_GPU_CONTEXTS / 16;
 
@@ -462,7 +463,7 @@ int intel_guc_setup(struct drm_device *dev)
 		intel_uc_fw_status_repr(guc_fw->load_status));
 
 	/* Loading forbidden, or no firmware to load? */
-	if (!i915.enable_guc_loading) {
+	if (!guc_fw->enable_guc_loading) {
 		err = 0;
 		goto fail;
 	} else if (fw_path == NULL) {
@@ -533,7 +534,7 @@ int intel_guc_setup(struct drm_device *dev)
 
 	intel_guc_auth_huc(dev);
 
-	if (i915.enable_guc_submission) {
+	if (guc_fw->enable_guc_submission) {
 		if (i915.guc_log_level >= 0)
 			gen9_enable_guc_interrupts(dev_priv);
 
@@ -562,9 +563,9 @@ int intel_guc_setup(struct drm_device *dev)
 	 * nonfatal error (i.e. it doesn't prevent driver load, but
 	 * marks the GPU as wedged until reset).
 	 */
-	if (i915.enable_guc_loading > 1) {
+	if (guc_fw->enable_guc_loading) {
 		ret = -EIO;
-	} else if (i915.enable_guc_submission > 1) {
+	} else if (guc_fw->enable_guc_submission) {
 		ret = -EIO;
 	} else {
 		ret = 0;
@@ -579,7 +580,7 @@ int intel_guc_setup(struct drm_device *dev)
 	else
 		DRM_WARN("GuC firmware load failed: %d\n", err);
 
-	if (i915.enable_guc_submission) {
+	if (guc_fw->enable_guc_submission) {
 		if (fw_path == NULL)
 			DRM_INFO("GuC submission without firmware not supported\n");
 		if (ret == 0)
@@ -587,7 +588,7 @@ int intel_guc_setup(struct drm_device *dev)
 		else
 			DRM_ERROR("GuC init failed: %d\n", ret);
 	}
-	i915.enable_guc_submission = 0;
+	guc_fw->enable_guc_submission = false;
 
 	return ret;
 }
@@ -745,14 +746,24 @@ void intel_guc_init(struct drm_device *dev)
 	const char *fw_path;
 
 	if (!HAS_GUC(dev)) {
-		i915.enable_guc_loading = 0;
-		i915.enable_guc_submission = 0;
+		guc_fw->enable_guc_loading = false;
+		guc_fw->enable_guc_submission = false;
 	} else {
 		/* A negative value means "use platform default" */
-		if (i915.enable_guc_loading < 0)
-			i915.enable_guc_loading = HAS_GUC_UCODE(dev);
-		if (i915.enable_guc_submission < 0)
-			i915.enable_guc_submission = HAS_GUC_SCHED(dev);
+		if (i915.enable_guc < 0) {
+			guc_fw->enable_guc_loading = HAS_GUC_UCODE(dev);
+		} else if (i915.enable_guc == 0) {
+			guc_fw->enable_guc_loading = false;
+			guc_fw->enable_guc_submission = false;
+		} else if (i915.enable_guc == 1) {
+			guc_fw->enable_guc_loading = HAS_GUC_UCODE(dev);
+			guc_fw->enable_guc_submission = false;
+		} else if (i915.enable_guc == 2) {
+			guc_fw->enable_guc_loading = HAS_GUC_UCODE(dev);
+			guc_fw->enable_guc_submission = HAS_GUC_SCHED(dev);
+		} else {
+			DRM_ERROR("Invalid parameter to enable_guc\n");
+		}
 	}
 
 	if (!HAS_GUC_UCODE(dev)) {
@@ -779,7 +790,7 @@ void intel_guc_init(struct drm_device *dev)
 	guc_fw->load_status = UC_FIRMWARE_NONE;
 
 	/* Early (and silent) return if GuC loading is disabled */
-	if (!i915.enable_guc_loading)
+	if (!guc_fw->enable_guc_loading)
 		return;
 	if (fw_path == NULL)
 		return;
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index dde04b764..69ddb93 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -641,6 +641,8 @@ int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request
 {
 	struct intel_engine_cs *engine = request->engine;
 	struct intel_context *ce = &request->ctx->engine[engine->id];
+	struct drm_i915_private *dev_priv = engine->i915;
+	struct intel_uc_fw *guc_fw = &dev_priv->guc.guc_fw;
 	int ret;
 
 	/* Flush enough space to reduce the likelihood of waiting after
@@ -661,7 +663,7 @@ int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request
 	if (ret)
 		return ret;
 
-	if (i915.enable_guc_submission) {
+	if (guc_fw->enable_guc_submission) {
 		/*
 		 * Check that the GuC has space for the request before
 		 * going any further, as the i915_add_request() call
@@ -695,7 +697,7 @@ int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request
 	return 0;
 
 err_unreserve:
-	if (i915.enable_guc_submission)
+	if (guc_fw->enable_guc_submission)
 		i915_guc_wq_unreserve(request);
 err_unpin:
 	intel_lr_context_unpin(request->ctx, engine);
@@ -706,6 +708,9 @@ static int intel_lr_context_pin(struct i915_gem_context *ctx,
 				struct intel_engine_cs *engine)
 {
 	struct intel_context *ce = &ctx->engine[engine->id];
+	struct drm_i915_private *dev_priv = engine->i915;
+	struct intel_uc_fw *guc_fw = &dev_priv->guc.guc_fw;
+
 	void *vaddr;
 	int ret;
 
@@ -738,7 +743,7 @@ static int intel_lr_context_pin(struct i915_gem_context *ctx,
 	ce->state->obj->mm.dirty = true;
 
 	/* Invalidate GuC TLB. */
-	if (i915.enable_guc_submission) {
+	if (guc_fw->enable_guc_submission) {
 		struct drm_i915_private *dev_priv = ctx->i915;
 		I915_WRITE(GEN8_GTCR, GEN8_GTCR_INVALIDATE);
 	}
@@ -1285,6 +1290,7 @@ static void reset_common_ring(struct intel_engine_cs *engine,
 	struct drm_i915_private *dev_priv = engine->i915;
 	struct execlist_port *port = engine->execlist_port;
 	struct intel_context *ce = &request->ctx->engine[engine->id];
+	struct intel_uc_fw *guc_fw = &dev_priv->guc.guc_fw;
 
 	/* We want a simple context + ring to execute the breadcrumb update.
 	 * We cannot rely on the context being intact across the GPU hang,
@@ -1305,7 +1311,7 @@ static void reset_common_ring(struct intel_engine_cs *engine,
 	request->ring->last_retired_head = -1;
 	intel_ring_update_space(request->ring);
 
-	if (i915.enable_guc_submission)
+	if (guc_fw->enable_guc_submission)
 		return;
 
 	/* Catch up with any missed context-switch interrupts */
-- 
2.7.4

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