[PATCH 5/7] drm/i915/guc: Keep the execbuf client allocated across reset
Chris Wilson
chris at chris-wilson.co.uk
Sat Nov 19 17:02:28 UTC 2016
In order to avoid some complexity in trying to reconstruct the
workqueues across reset, remember them instead.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_debugfs.c | 2 +-
drivers/gpu/drm/i915/i915_guc_submission.c | 79 ++++++++++++++----------------
drivers/gpu/drm/i915/intel_guc.h | 2 +-
3 files changed, 40 insertions(+), 43 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index b7f42c448a44..a10f43e3fd3c 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2430,7 +2430,7 @@ static void i915_guc_client_info(struct seq_file *m,
seq_printf(m, "\tPriority %d, GuC ctx index: %u, PD offset 0x%x\n",
client->priority, client->ctx_index, client->proc_desc_offset);
seq_printf(m, "\tDoorbell id %d, offset: 0x%x, cookie 0x%x\n",
- client->doorbell_id, client->doorbell_offset, client->cookie);
+ client->doorbell_id, client->doorbell_offset, client->doorbell_cookie);
seq_printf(m, "\tWQ size %d, offset: 0x%x, tail %d\n",
client->wq_size, client->wq_offset, client->wq_tail);
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 4462112725ef..a42c27ec4bb1 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -247,18 +247,11 @@ static int guc_update_doorbell_id(struct intel_guc *guc,
/* Activate the new doorbell */
__set_bit(new_id, doorbell_bitmap);
- doorbell->cookie = 0;
doorbell->db_status = GUC_DOORBELL_ENABLED;
+ doorbell->cookie = client->doorbell_cookie;
return host2guc_allocate_doorbell(guc, client);
}
-static int guc_init_doorbell(struct intel_guc *guc,
- struct i915_guc_client *client,
- uint16_t db_id)
-{
- return guc_update_doorbell_id(guc, client, db_id);
-}
-
static void guc_disable_doorbell(struct intel_guc *guc,
struct i915_guc_client *client)
{
@@ -567,11 +560,11 @@ static int guc_ring_doorbell(struct i915_guc_client *gc)
/* current cookie */
db_cmp.db_status = GUC_DOORBELL_ENABLED;
- db_cmp.cookie = gc->cookie;
+ db_cmp.cookie = gc->doorbell_cookie;
/* cookie to be updated */
db_exc.db_status = GUC_DOORBELL_ENABLED;
- db_exc.cookie = gc->cookie + 1;
+ db_exc.cookie = gc->doorbell_cookie + 1;
if (db_exc.cookie == 0)
db_exc.cookie = 1;
@@ -586,7 +579,7 @@ static int guc_ring_doorbell(struct i915_guc_client *gc)
/* if the exchange was successfully executed */
if (db_ret.value_qw == db_cmp.value_qw) {
/* db was successfully rung */
- gc->cookie = db_exc.cookie;
+ gc->doorbell_cookie = db_exc.cookie;
ret = 0;
break;
}
@@ -779,8 +772,7 @@ static void guc_init_doorbell_hw(struct intel_guc *guc)
uint16_t db_id;
int i, err;
- /* Save client's original doorbell selection */
- db_id = client->doorbell_id;
+ guc_disable_doorbell(guc, client);
for (i = 0; i < GUC_MAX_DOORBELLS; ++i) {
/* Skip if doorbell is OK */
@@ -793,7 +785,9 @@ static void guc_init_doorbell_hw(struct intel_guc *guc)
i, err);
}
- /* Restore to original value */
+ db_id = select_doorbell_register(guc, client->priority);
+ WARN_ON(db_id == GUC_INVALID_DOORBELL_ID);
+
err = guc_update_doorbell_id(guc, client, db_id);
if (err)
DRM_WARN("Failed to restore doorbell to %d, err %d\n",
@@ -883,8 +877,13 @@ guc_client_alloc(struct drm_i915_private *dev_priv,
guc_proc_desc_init(guc, client);
guc_ctx_desc_init(guc, client);
- if (guc_init_doorbell(guc, client, db_id))
- goto err;
+
+ /* For runtime client allocation we need to enable the doorbell. Not
+ * required yet for the static execbuf_client as this special kernel
+ * client is enabled from i915_guc_submission_enable().
+ *
+ * guc_update_doorbell_id(guc, client, db_id);
+ */
DRM_DEBUG_DRIVER("new priority %u client %p for engine(s) 0x%x: ctx_index %u\n",
priority, client, client->engines, client->ctx_index);
@@ -1504,42 +1503,43 @@ int i915_guc_submission_init(struct drm_i915_private *dev_priv)
guc_log_create(guc);
guc_addon_create(guc);
+ guc->execbuf_client = guc_client_alloc(dev_priv,
+ INTEL_INFO(dev_priv)->ring_mask,
+ GUC_CTX_PRIORITY_KMD_NORMAL,
+ dev_priv->kernel_context);
+ if (!guc->execbuf_client) {
+ DRM_ERROR("Failed to create GuC client for execbuf!\n");
+ goto err;
+ }
+
return 0;
+
+err:
+ i915_guc_submission_fini(dev_priv);
+ return -ENOMEM;
}
int i915_guc_submission_enable(struct drm_i915_private *dev_priv)
{
struct intel_guc *guc = &dev_priv->guc;
- struct drm_i915_gem_request *request;
- struct i915_guc_client *client;
+ struct i915_guc_client *client = guc->execbuf_client;
struct intel_engine_cs *engine;
enum intel_engine_id id;
- /* client for execbuf submission */
- client = guc_client_alloc(dev_priv,
- INTEL_INFO(dev_priv)->ring_mask,
- GUC_CTX_PRIORITY_KMD_NORMAL,
- dev_priv->kernel_context);
- if (!client) {
- DRM_ERROR("Failed to create normal GuC client!\n");
- return -ENOMEM;
- }
-
- guc->execbuf_client = client;
host2guc_sample_forcewake(guc, client);
guc_init_doorbell_hw(guc);
/* Take over from manual control of ELSP (execlists) */
for_each_engine(engine, dev_priv, id) {
+ struct drm_i915_gem_request *rq;
+
engine->submit_request = i915_guc_submit;
engine->schedule = NULL;
/* Replay the current set of previously submitted requests */
- list_for_each_entry(request,
- &engine->timeline->requests, link) {
+ list_for_each_entry(rq, &engine->timeline->requests, link) {
client->wq_rsvd += sizeof(struct guc_wq_item);
- if (i915_sw_fence_done(&request->submit))
- i915_guc_submit(request);
+ i915_guc_submit(rq);
}
}
@@ -1548,21 +1548,18 @@ int i915_guc_submission_enable(struct drm_i915_private *dev_priv)
void i915_guc_submission_disable(struct drm_i915_private *dev_priv)
{
- struct intel_guc *guc = &dev_priv->guc;
-
- if (!guc->execbuf_client)
- return;
-
/* Revert back to manual ELSP submission */
intel_execlists_enable_submission(dev_priv);
-
- guc_client_free(dev_priv, guc->execbuf_client);
- guc->execbuf_client = NULL;
}
void i915_guc_submission_fini(struct drm_i915_private *dev_priv)
{
struct intel_guc *guc = &dev_priv->guc;
+ struct i915_guc_client *gc;
+
+ gc = fetch_and_zero(&guc->execbuf_client);
+ if (gc)
+ guc_client_free(dev_priv, gc);
i915_vma_unpin_and_release(&guc->ads_vma);
i915_vma_unpin_and_release(&guc->log.vma);
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index 0053258e03d3..dc570a6d612e 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -74,7 +74,7 @@ struct i915_guc_client {
uint32_t proc_desc_offset;
uint32_t doorbell_offset;
- uint32_t cookie;
+ uint32_t doorbell_cookie;
uint16_t doorbell_id;
uint16_t padding[3]; /* Maintain alignment */
--
2.10.2
More information about the Intel-gfx-trybot
mailing list