[PATCH 36/38] drm/i915: Track pinned vma inside guc

[Chris Wilson <chris@chris-wilson.co.uk>]

Since the guc allocates and pins and object into the GGTT for its usage,
it is more natural to use that pinned VMA as our resource cookie.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_debugfs.c        |  10 +--
 drivers/gpu/drm/i915/i915_guc_submission.c | 131 ++++++++++++++---------------
 drivers/gpu/drm/i915/intel_guc.h           |   9 +-
 drivers/gpu/drm/i915/intel_guc_loader.c    |   7 +-
 4 files changed, 73 insertions(+), 84 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 9154919fdd56..485fc23893d6 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2601,15 +2601,15 @@ static int i915_guc_log_dump(struct seq_file *m, void *data)
 	struct drm_info_node *node = m->private;
 	struct drm_device *dev = node->minor->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct drm_i915_gem_object *log_obj = dev_priv->guc.log_obj;
-	u32 *log;
+	struct drm_i915_gem_object *obj;
 	int i = 0, pg;
 
-	if (!log_obj)
+	if (dev_priv->guc.log == NULL)
 		return 0;
 
-	for (pg = 0; pg < log_obj->base.size / PAGE_SIZE; pg++) {
-		log = kmap_atomic(i915_gem_object_get_page(log_obj, pg));
+	obj = dev_priv->guc.log->obj;
+	for (pg = 0; pg < obj->base.size / PAGE_SIZE; pg++) {
+		u32 *log = kmap_atomic(i915_gem_object_get_page(obj, pg));
 
 		for (i = 0; i < PAGE_SIZE / sizeof(u32); i += 4)
 			seq_printf(m, "0x%08x 0x%08x 0x%08x 0x%08x\n",
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 63ef34c78494..1c92c4c6b0e1 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -357,8 +357,8 @@ static void guc_init_proc_desc(struct intel_guc *guc,
 static void guc_init_ctx_desc(struct intel_guc *guc,
 			      struct i915_guc_client *client)
 {
-	struct drm_i915_gem_object *client_obj = client->client_obj;
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
+	struct drm_i915_gem_object *client_obj = client->client->obj;
 	struct intel_engine_cs *engine;
 	struct i915_gem_context *ctx = client->owner;
 	struct guc_context_desc desc;
@@ -412,7 +412,7 @@ static void guc_init_ctx_desc(struct intel_guc *guc,
 	 * The doorbell, process descriptor, and workqueue are all parts
 	 * of the client object, which the GuC will reference via the GGTT
 	 */
-	gfx_addr = i915_gem_obj_ggtt_offset(client_obj);
+	gfx_addr = client->client->node.start;
 	desc.db_trigger_phy = sg_dma_address(client_obj->pages->sgl) +
 				client->doorbell_offset;
 	desc.db_trigger_cpu = (uintptr_t)client->client_base +
@@ -429,7 +429,7 @@ static void guc_init_ctx_desc(struct intel_guc *guc,
 	desc.desc_private = (uintptr_t)client;
 
 	/* Pool context is pinned already */
-	sg = guc->ctx_pool_obj->pages;
+	sg = guc->ctx_pool->obj->pages;
 	sg_pcopy_from_buffer(sg->sgl, sg->nents, &desc, sizeof(desc),
 			     sizeof(desc) * client->ctx_index);
 }
@@ -442,7 +442,7 @@ static void guc_fini_ctx_desc(struct intel_guc *guc,
 
 	memset(&desc, 0, sizeof(desc));
 
-	sg = guc->ctx_pool_obj->pages;
+	sg = guc->ctx_pool->obj->pages;
 	sg_pcopy_from_buffer(sg->sgl, sg->nents, &desc, sizeof(desc),
 			     sizeof(desc) * client->ctx_index);
 }
@@ -524,7 +524,7 @@ static void guc_add_workqueue_item(struct i915_guc_client *gc,
 	/* WQ starts from the page after doorbell / process_desc */
 	wq_page = (wq_off + GUC_DB_SIZE) >> PAGE_SHIFT;
 	wq_off &= PAGE_SIZE - 1;
-	base = kmap_atomic(i915_gem_object_get_page(gc->client_obj, wq_page));
+	base = kmap_atomic(i915_gem_object_get_page(gc->client->obj, wq_page));
 	wqi = (struct guc_wq_item *)((char *)base + wq_off);
 
 	/* Now fill in the 4-word work queue item */
@@ -588,8 +588,8 @@ void i915_guc_submit(struct drm_i915_gem_request *rq)
  */
 
 /**
- * gem_allocate_guc_obj() - Allocate gem object for GuC usage
- * @dev:	drm device
+ * guc_allocate_vma() - Allocate gem object for GuC usage
+ * @guc:	the guc
  * @size:	size of object
  *
  * This is a wrapper to create a gem obj. In order to use it inside GuC, the
@@ -598,46 +598,40 @@ void i915_guc_submit(struct drm_i915_gem_request *rq)
  *
  * Return:	A drm_i915_gem_object if successful, otherwise NULL.
  */
-static struct drm_i915_gem_object *gem_allocate_guc_obj(struct drm_device *dev,
-							u32 size)
+static struct i915_vma *guc_allocate_vma(struct intel_guc *guc, u32 size)
 {
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct drm_i915_private *dev_priv = guc_to_i915(guc);
 	struct drm_i915_gem_object *obj;
+	int ret;
 
-	obj = i915_gem_object_create(dev, size);
+	obj = i915_gem_object_create(dev_priv->dev, size);
 	if (IS_ERR(obj))
-		return NULL;
+		return ERR_CAST(obj);
 
-	if (i915_gem_object_get_pages(obj)) {
+	ret = i915_gem_object_ggtt_pin(obj, NULL, 0, PAGE_SIZE,
+				       PIN_OFFSET_BIAS | GUC_WOPCM_TOP);
+	if (ret) {
 		i915_gem_object_put(obj);
-		return NULL;
-	}
-
-	if (i915_gem_object_ggtt_pin(obj, NULL, 0, PAGE_SIZE,
-				     PIN_OFFSET_BIAS | GUC_WOPCM_TOP)) {
-		i915_gem_object_put(obj);
-		return NULL;
+		return ERR_PTR(ret);
 	}
 
 	/* Invalidate GuC TLB to let GuC take the latest updates to GTT. */
 	I915_WRITE(GEN8_GTCR, GEN8_GTCR_INVALIDATE);
 
-	return obj;
+	return i915_gem_obj_to_ggtt(obj);
 }
 
 /**
- * gem_release_guc_obj() - Release gem object allocated for GuC usage
- * @obj:	gem obj to be released
+ * guc_release_vma() - Release gem object allocated for GuC usage
+ * @vma:	gem obj to be released
  */
-static void gem_release_guc_obj(struct drm_i915_gem_object *obj)
+static void guc_release_vma(struct i915_vma *vma)
 {
-	if (!obj)
+	if (vma == NULL)
 		return;
 
-	if (i915_gem_obj_is_pinned(obj))
-		i915_gem_object_ggtt_unpin(obj);
-
-	i915_gem_object_put(obj);
+	i915_vma_unpin(vma);
+	i915_gem_object_put(vma->obj);
 }
 
 static void guc_client_free(struct drm_device *dev,
@@ -671,7 +665,7 @@ static void guc_client_free(struct drm_device *dev,
 		kunmap(kmap_to_page(client->client_base));
 	}
 
-	gem_release_guc_obj(client->client_obj);
+	guc_release_vma(client->client);
 
 	if (client->ctx_index != GUC_INVALID_CTX_ID) {
 		guc_fini_ctx_desc(guc, client);
@@ -700,7 +694,7 @@ static struct i915_guc_client *guc_client_alloc(struct drm_device *dev,
 	struct i915_guc_client *client;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_guc *guc = &dev_priv->guc;
-	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
 
 	client = kzalloc(sizeof(*client), GFP_KERNEL);
 	if (!client)
@@ -719,13 +713,13 @@ static struct i915_guc_client *guc_client_alloc(struct drm_device *dev,
 	}
 
 	/* The first page is doorbell/proc_desc. Two followed pages are wq. */
-	obj = gem_allocate_guc_obj(dev, GUC_DB_SIZE + GUC_WQ_SIZE);
-	if (!obj)
+	vma = guc_allocate_vma(guc, GUC_DB_SIZE + GUC_WQ_SIZE);
+	if (IS_ERR(vma))
 		goto err;
 
 	/* We'll keep just the first (doorbell/proc) page permanently kmap'd. */
-	client->client_obj = obj;
-	client->client_base = kmap(i915_gem_object_get_page(obj, 0));
+	client->client = vma;
+	client->client_base = kmap(i915_gem_object_get_page(vma->obj, 0));
 	client->wq_offset = GUC_DB_SIZE;
 	client->wq_size = GUC_WQ_SIZE;
 
@@ -769,8 +763,7 @@ err:
 
 static void guc_create_log(struct intel_guc *guc)
 {
-	struct drm_i915_private *dev_priv = guc_to_i915(guc);
-	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
 	unsigned long offset;
 	uint32_t size, flags;
 
@@ -786,16 +779,16 @@ static void guc_create_log(struct intel_guc *guc)
 		GUC_LOG_ISR_PAGES + 1 +
 		GUC_LOG_CRASH_PAGES + 1) << PAGE_SHIFT;
 
-	obj = guc->log_obj;
-	if (!obj) {
-		obj = gem_allocate_guc_obj(dev_priv->dev, size);
-		if (!obj) {
+	vma = guc->log;
+	if (vma == NULL) {
+		vma = guc_allocate_vma(guc, size);
+		if (IS_ERR(vma)) {
 			/* logging will be off */
 			i915.guc_log_level = -1;
 			return;
 		}
 
-		guc->log_obj = obj;
+		guc->log = vma;
 	}
 
 	/* each allocated unit is a page */
@@ -804,7 +797,7 @@ static void guc_create_log(struct intel_guc *guc)
 		(GUC_LOG_ISR_PAGES << GUC_LOG_ISR_SHIFT) |
 		(GUC_LOG_CRASH_PAGES << GUC_LOG_CRASH_SHIFT);
 
-	offset = i915_gem_obj_ggtt_offset(obj) >> PAGE_SHIFT; /* in pages */
+	offset = vma->node.start >> PAGE_SHIFT; /* in pages */
 	guc->log_flags = (offset << GUC_LOG_BUF_ADDR_SHIFT) | flags;
 }
 
@@ -833,7 +826,7 @@ static void init_guc_policies(struct guc_policies *policies)
 static void guc_create_ads(struct intel_guc *guc)
 {
 	struct drm_i915_private *dev_priv = guc_to_i915(guc);
-	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
 	struct guc_ads *ads;
 	struct guc_policies *policies;
 	struct guc_mmio_reg_state *reg_state;
@@ -846,16 +839,16 @@ static void guc_create_ads(struct intel_guc *guc)
 			sizeof(struct guc_mmio_reg_state) +
 			GUC_S3_SAVE_SPACE_PAGES * PAGE_SIZE;
 
-	obj = guc->ads_obj;
-	if (!obj) {
-		obj = gem_allocate_guc_obj(dev_priv->dev, PAGE_ALIGN(size));
-		if (!obj)
+	vma = guc->ads;
+	if (vma == NULL) {
+		vma = guc_allocate_vma(guc, PAGE_ALIGN(size));
+		if (IS_ERR(vma))
 			return;
 
-		guc->ads_obj = obj;
+		guc->ads = vma;
 	}
 
-	page = i915_gem_object_get_page(obj, 0);
+	page = i915_gem_object_get_page(vma->obj, 0);
 	ads = kmap(page);
 
 	/*
@@ -875,8 +868,7 @@ static void guc_create_ads(struct intel_guc *guc)
 	policies = (void *)ads + sizeof(struct guc_ads);
 	init_guc_policies(policies);
 
-	ads->scheduler_policies = i915_gem_obj_ggtt_offset(obj) +
-			sizeof(struct guc_ads);
+	ads->scheduler_policies = vma->node.start + sizeof(struct guc_ads);
 
 	/* MMIO reg state */
 	reg_state = (void *)policies + sizeof(struct guc_policies);
@@ -904,22 +896,22 @@ static void guc_create_ads(struct intel_guc *guc)
  */
 int i915_guc_submission_init(struct drm_device *dev)
 {
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	const size_t ctxsize = sizeof(struct guc_context_desc);
-	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_guc *guc = &to_i915(dev)->guc;
+	struct i915_vma *vma;
+	u32 size;
 
 	if (!i915.enable_guc_submission)
 		return 0; /* not enabled  */
 
-	if (guc->ctx_pool_obj)
+	if (guc->ctx_pool)
 		return 0; /* already allocated */
 
-	guc->ctx_pool_obj = gem_allocate_guc_obj(dev_priv->dev, gemsize);
-	if (!guc->ctx_pool_obj)
-		return -ENOMEM;
+	size = PAGE_ALIGN(GUC_MAX_GPU_CONTEXTS*sizeof(struct guc_context_desc));
+	vma = guc_allocate_vma(guc, size);
+	if (IS_ERR(vma))
+		return PTR_ERR(vma);
 
+	guc->ctx_pool  = vma;
 	ida_init(&guc->ctx_ids);
 
 	guc_create_log(guc);
@@ -962,19 +954,18 @@ void i915_guc_submission_disable(struct drm_device *dev)
 
 void i915_guc_submission_fini(struct drm_device *dev)
 {
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_guc *guc = &dev_priv->guc;
+	struct intel_guc *guc = &to_i915(dev)->guc;
 
-	gem_release_guc_obj(dev_priv->guc.ads_obj);
-	guc->ads_obj = NULL;
+	guc_release_vma(guc->ads);
+	guc->ads = NULL;
 
-	gem_release_guc_obj(dev_priv->guc.log_obj);
-	guc->log_obj = NULL;
+	guc_release_vma(guc->log);
+	guc->log = NULL;
 
-	if (guc->ctx_pool_obj)
+	if (guc->ctx_pool)
 		ida_destroy(&guc->ctx_ids);
-	gem_release_guc_obj(guc->ctx_pool_obj);
-	guc->ctx_pool_obj = NULL;
+	guc_release_vma(guc->ctx_pool);
+	guc->ctx_pool = NULL;
 }
 
 /**
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index 7f9063385258..3b65500d4509 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -62,7 +62,7 @@ struct drm_i915_gem_request;
  *   retcode: errno from last guc_submit()
  */
 struct i915_guc_client {
-	struct drm_i915_gem_object *client_obj;
+	struct i915_vma *client;
 	void *client_base;		/* first page (only) of above	*/
 	struct i915_gem_context *owner;
 	struct intel_guc *guc;
@@ -124,11 +124,10 @@ struct intel_guc_fw {
 struct intel_guc {
 	struct intel_guc_fw guc_fw;
 	uint32_t log_flags;
-	struct drm_i915_gem_object *log_obj;
+	struct i915_vma *log;
 
-	struct drm_i915_gem_object *ads_obj;
-
-	struct drm_i915_gem_object *ctx_pool_obj;
+	struct i915_vma *ads;
+	struct i915_vma *ctx_pool;
 	struct ida ctx_ids;
 
 	struct i915_guc_client *execbuf_client;
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index be93b458968a..1ecf88fd0b10 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -179,16 +179,15 @@ static void set_guc_init_params(struct drm_i915_private *dev_priv)
 			i915.guc_log_level << GUC_LOG_VERBOSITY_SHIFT;
 	}
 
-	if (guc->ads_obj) {
-		u32 ads = (u32)i915_gem_obj_ggtt_offset(guc->ads_obj)
-				>> PAGE_SHIFT;
+	if (guc->ads) {
+		u32 ads = (u32)guc->ads->node.start >> PAGE_SHIFT;
 		params[GUC_CTL_DEBUG] |= ads << GUC_ADS_ADDR_SHIFT;
 		params[GUC_CTL_DEBUG] |= GUC_ADS_ENABLED;
 	}
 
 	/* If GuC submission is enabled, set up additional parameters here */
 	if (i915.enable_guc_submission) {
-		u32 pgs = i915_gem_obj_ggtt_offset(dev_priv->guc.ctx_pool_obj);
+		u32 pgs = dev_priv->guc.ctx_pool->node.start;
 		u32 ctx_in_16 = GUC_MAX_GPU_CONTEXTS / 16;
 
 		pgs >>= PAGE_SHIFT;
-- 
2.8.1

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