forked from Minki/linux
drm/i915/guc: A little bit more of doorbell sanitization
Some recent refactoring patches have left the doorbell creation outside the GuC client allocation, which does not make a lot of sense (a client without a doorbell is something useless). Move it back there, and refactor the init_doorbell_hw consequently. Thanks to this, we can do some other improvements, like hoisting the check for GuC submission enabled out of the enable function. v2: Rebased. Signed-off-by: Oscar Mateo <oscar.mateo@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
This commit is contained in:
Oscar Mateo
Joonas Lahtinen
parent
ed2ec71f9f
commit
397fce887a
@ -163,15 +163,13 @@ static struct guc_context_desc *__get_context_desc(struct i915_guc_client *clien
|
||||
* client object which contains the page being used for the doorbell
|
||||
*/
|
||||
|
||||
static int __update_doorbell_desc(struct i915_guc_client *client, u16 new_id)
|
||||
static void __update_doorbell_desc(struct i915_guc_client *client, u16 new_id)
|
||||
{
|
||||
struct guc_context_desc *desc;
|
||||
|
||||
/* Update the GuC's idea of the doorbell ID */
|
||||
desc = __get_context_desc(client);
|
||||
desc->db_id = new_id;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct guc_doorbell_info *__get_doorbell(struct i915_guc_client *client)
|
||||
@ -225,6 +223,28 @@ static int __destroy_doorbell(struct i915_guc_client *client)
|
||||
return __guc_deallocate_doorbell(client->guc, client->ctx_index);
|
||||
}
|
||||
|
||||
static int create_doorbell(struct i915_guc_client *client)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = __reserve_doorbell(client);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
__update_doorbell_desc(client, client->doorbell_id);
|
||||
|
||||
ret = __create_doorbell(client);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
__update_doorbell_desc(client, GUC_DOORBELL_INVALID);
|
||||
__unreserve_doorbell(client);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int destroy_doorbell(struct i915_guc_client *client)
|
||||
{
|
||||
int err;
|
||||
@ -494,6 +514,17 @@ static void guc_wq_item_append(struct i915_guc_client *client,
|
||||
wqi->fence_id = rq->global_seqno;
|
||||
}
|
||||
|
||||
static void guc_reset_wq(struct i915_guc_client *client)
|
||||
{
|
||||
struct guc_process_desc *desc = client->vaddr +
|
||||
client->proc_desc_offset;
|
||||
|
||||
desc->head = 0;
|
||||
desc->tail = 0;
|
||||
|
||||
client->wq_tail = 0;
|
||||
}
|
||||
|
||||
static int guc_ring_doorbell(struct i915_guc_client *client)
|
||||
{
|
||||
struct guc_process_desc *desc;
|
||||
@ -748,19 +779,6 @@ err:
|
||||
return vma;
|
||||
}
|
||||
|
||||
static void guc_client_free(struct i915_guc_client *client)
|
||||
{
|
||||
/*
|
||||
* XXX: wait for any outstanding submissions before freeing memory.
|
||||
* Be sure to drop any locks
|
||||
*/
|
||||
guc_ctx_desc_fini(client->guc, client);
|
||||
i915_gem_object_unpin_map(client->vma->obj);
|
||||
i915_vma_unpin_and_release(&client->vma);
|
||||
ida_simple_remove(&client->guc->ctx_ids, client->ctx_index);
|
||||
kfree(client);
|
||||
}
|
||||
|
||||
/* Check that a doorbell register is in the expected state */
|
||||
static bool doorbell_ok(struct intel_guc *guc, u16 db_id)
|
||||
{
|
||||
@ -791,9 +809,8 @@ static int __reset_doorbell(struct i915_guc_client* client, u16 db_id)
|
||||
{
|
||||
int err;
|
||||
|
||||
err = __update_doorbell_desc(client, db_id);
|
||||
if (!err)
|
||||
err = __create_doorbell(client);
|
||||
__update_doorbell_desc(client, db_id);
|
||||
err = __create_doorbell(client);
|
||||
if (!err)
|
||||
err = __destroy_doorbell(client);
|
||||
|
||||
@ -801,48 +818,61 @@ static int __reset_doorbell(struct i915_guc_client* client, u16 db_id)
|
||||
}
|
||||
|
||||
/*
|
||||
* Borrow the first client to set up & tear down each unused doorbell
|
||||
* in turn, to ensure that all doorbell h/w is (re)initialised.
|
||||
* Set up & tear down each unused doorbell in turn, to ensure that all doorbell
|
||||
* HW is (re)initialised. For that end, we might have to borrow the first
|
||||
* client. Also, tell GuC about all the doorbells in use by all clients.
|
||||
* We do this because the KMD, the GuC and the doorbell HW can easily go out of
|
||||
* sync (e.g. we can reset the GuC, but not the doorbel HW).
|
||||
*/
|
||||
static int guc_init_doorbell_hw(struct intel_guc *guc)
|
||||
{
|
||||
struct i915_guc_client *client = guc->execbuf_client;
|
||||
int err;
|
||||
int i;
|
||||
bool recreate_first_client = false;
|
||||
u16 db_id;
|
||||
int ret;
|
||||
|
||||
if (has_doorbell(client))
|
||||
destroy_doorbell(client);
|
||||
|
||||
for (i = 0; i < GUC_NUM_DOORBELLS; ++i) {
|
||||
if (doorbell_ok(guc, i))
|
||||
/* For unused doorbells, make sure they are disabled */
|
||||
for_each_clear_bit(db_id, guc->doorbell_bitmap, GUC_NUM_DOORBELLS) {
|
||||
if (doorbell_ok(guc, db_id))
|
||||
continue;
|
||||
|
||||
err = __reset_doorbell(client, i);
|
||||
WARN(err, "Doorbell %d reset failed, err %d\n", i, err);
|
||||
if (has_doorbell(client)) {
|
||||
/* Borrow execbuf_client (we will recreate it later) */
|
||||
destroy_doorbell(client);
|
||||
recreate_first_client = true;
|
||||
}
|
||||
|
||||
ret = __reset_doorbell(client, db_id);
|
||||
WARN(ret, "Doorbell %u reset failed, err %d\n", db_id, ret);
|
||||
}
|
||||
|
||||
/* Read back & verify all doorbell registers */
|
||||
for (i = 0; i < GUC_NUM_DOORBELLS; ++i)
|
||||
WARN_ON(!doorbell_ok(guc, i));
|
||||
if (recreate_first_client) {
|
||||
ret = __reserve_doorbell(client);
|
||||
if (unlikely(ret)) {
|
||||
DRM_ERROR("Couldn't re-reserve first client db: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
err = __reserve_doorbell(client);
|
||||
if (err)
|
||||
return err;
|
||||
__update_doorbell_desc(client, client->doorbell_id);
|
||||
}
|
||||
|
||||
err = __update_doorbell_desc(client, client->doorbell_id);
|
||||
if (err)
|
||||
goto err_reserve;
|
||||
/* Now for every client (and not only execbuf_client) make sure their
|
||||
* doorbells are known by the GuC */
|
||||
//for (client = client_list; client != NULL; client = client->next)
|
||||
{
|
||||
ret = __create_doorbell(client);
|
||||
if (ret) {
|
||||
DRM_ERROR("Couldn't recreate client %u doorbell: %d\n",
|
||||
client->ctx_index, ret);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
err = __create_doorbell(client);
|
||||
if (err)
|
||||
goto err_update;
|
||||
/* Read back & verify all (used & unused) doorbell registers */
|
||||
for (db_id = 0; db_id < GUC_NUM_DOORBELLS; ++db_id)
|
||||
WARN_ON(!doorbell_ok(guc, db_id));
|
||||
|
||||
return 0;
|
||||
err_reserve:
|
||||
__unreserve_doorbell(client);
|
||||
err_update:
|
||||
__update_doorbell_desc(client, GUC_DOORBELL_INVALID);
|
||||
return err;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -922,11 +952,9 @@ guc_client_alloc(struct drm_i915_private *dev_priv,
|
||||
guc_proc_desc_init(guc, client);
|
||||
guc_ctx_desc_init(guc, client);
|
||||
|
||||
/* FIXME: Runtime client allocation (which currently we don't do) will
|
||||
* require that the doorbell gets created now. The static execbuf_client
|
||||
* is now getting its doorbell later (on submission enable) but maybe we
|
||||
* also want to reorder things in the future so that we don't have to
|
||||
* special case the doorbell creation */
|
||||
ret = create_doorbell(client);
|
||||
if (ret)
|
||||
goto err_vaddr;
|
||||
|
||||
DRM_DEBUG_DRIVER("new priority %u client %p for engine(s) 0x%x: ctx_index %u\n",
|
||||
priority, client, client->engines, client->ctx_index);
|
||||
@ -934,6 +962,9 @@ guc_client_alloc(struct drm_i915_private *dev_priv,
|
||||
client->doorbell_id, client->doorbell_offset);
|
||||
|
||||
return client;
|
||||
|
||||
err_vaddr:
|
||||
i915_gem_object_unpin_map(client->vma->obj);
|
||||
err_vma:
|
||||
i915_vma_unpin_and_release(&client->vma);
|
||||
err_id:
|
||||
@ -943,6 +974,24 @@ err_client:
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
static void guc_client_free(struct i915_guc_client *client)
|
||||
{
|
||||
/*
|
||||
* XXX: wait for any outstanding submissions before freeing memory.
|
||||
* Be sure to drop any locks
|
||||
*/
|
||||
|
||||
/* FIXME: in many cases, by the time we get here the GuC has been
|
||||
* reset, so we cannot destroy the doorbell properly. Ignore the
|
||||
* error message for now */
|
||||
destroy_doorbell(client);
|
||||
guc_ctx_desc_fini(client->guc, client);
|
||||
i915_gem_object_unpin_map(client->vma->obj);
|
||||
i915_vma_unpin_and_release(&client->vma);
|
||||
ida_simple_remove(&client->guc->ctx_ids, client->ctx_index);
|
||||
kfree(client);
|
||||
}
|
||||
|
||||
static void guc_policies_init(struct guc_policies *policies)
|
||||
{
|
||||
struct guc_policy *policy;
|
||||
@ -1034,8 +1083,8 @@ static void guc_ads_destroy(struct intel_guc *guc)
|
||||
}
|
||||
|
||||
/*
|
||||
* Set up the memory resources to be shared with the GuC. At this point,
|
||||
* we require just one object that can be mapped through the GGTT.
|
||||
* Set up the memory resources to be shared with the GuC (via the GGTT)
|
||||
* at firmware loading time.
|
||||
*/
|
||||
int i915_guc_submission_init(struct drm_i915_private *dev_priv)
|
||||
{
|
||||
@ -1047,16 +1096,6 @@ int i915_guc_submission_init(struct drm_i915_private *dev_priv)
|
||||
void *vaddr;
|
||||
int ret;
|
||||
|
||||
if (!HAS_GUC_SCHED(dev_priv))
|
||||
return 0;
|
||||
|
||||
/* Wipe bitmap & delete client in case of reinitialisation */
|
||||
bitmap_clear(guc->doorbell_bitmap, 0, GUC_NUM_DOORBELLS);
|
||||
i915_guc_submission_disable(dev_priv);
|
||||
|
||||
if (!i915.enable_guc_submission)
|
||||
return 0;
|
||||
|
||||
if (guc->ctx_pool)
|
||||
return 0;
|
||||
|
||||
@ -1084,20 +1123,8 @@ int i915_guc_submission_init(struct drm_i915_private *dev_priv)
|
||||
|
||||
ida_init(&guc->ctx_ids);
|
||||
|
||||
guc->execbuf_client = guc_client_alloc(dev_priv,
|
||||
INTEL_INFO(dev_priv)->ring_mask,
|
||||
GUC_CTX_PRIORITY_KMD_NORMAL,
|
||||
dev_priv->kernel_context);
|
||||
if (IS_ERR(guc->execbuf_client)) {
|
||||
DRM_ERROR("Failed to create GuC client for execbuf!\n");
|
||||
ret = PTR_ERR(guc->execbuf_client);
|
||||
goto err_ads;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_ads:
|
||||
guc_ads_destroy(guc);
|
||||
err_log:
|
||||
intel_guc_log_destroy(guc);
|
||||
err_vaddr:
|
||||
@ -1111,11 +1138,6 @@ void i915_guc_submission_fini(struct drm_i915_private *dev_priv)
|
||||
{
|
||||
struct intel_guc *guc = &dev_priv->guc;
|
||||
|
||||
if (!i915.enable_guc_submission)
|
||||
return 0;
|
||||
|
||||
guc_client_free(guc->execbuf_client);
|
||||
guc->execbuf_client = NULL;
|
||||
ida_destroy(&guc->ctx_ids);
|
||||
guc_ads_destroy(guc);
|
||||
intel_guc_log_destroy(guc);
|
||||
@ -1123,17 +1145,6 @@ void i915_guc_submission_fini(struct drm_i915_private *dev_priv)
|
||||
i915_vma_unpin_and_release(&guc->ctx_pool);
|
||||
}
|
||||
|
||||
static void guc_reset_wq(struct i915_guc_client *client)
|
||||
{
|
||||
struct guc_process_desc *desc = client->vaddr +
|
||||
client->proc_desc_offset;
|
||||
|
||||
desc->head = 0;
|
||||
desc->tail = 0;
|
||||
|
||||
client->wq_tail = 0;
|
||||
}
|
||||
|
||||
static void guc_interrupts_capture(struct drm_i915_private *dev_priv)
|
||||
{
|
||||
struct intel_engine_cs *engine;
|
||||
@ -1184,17 +1195,28 @@ int i915_guc_submission_enable(struct drm_i915_private *dev_priv)
|
||||
enum intel_engine_id id;
|
||||
int err;
|
||||
|
||||
if (!client)
|
||||
return -ENODEV;
|
||||
if (!client) {
|
||||
client = guc_client_alloc(dev_priv,
|
||||
INTEL_INFO(dev_priv)->ring_mask,
|
||||
GUC_CTX_PRIORITY_KMD_NORMAL,
|
||||
dev_priv->kernel_context);
|
||||
if (IS_ERR(client)) {
|
||||
DRM_ERROR("Failed to create GuC client for execbuf!\n");
|
||||
return PTR_ERR(client);
|
||||
}
|
||||
|
||||
guc->execbuf_client = client;
|
||||
}
|
||||
|
||||
err = intel_guc_sample_forcewake(guc);
|
||||
if (err)
|
||||
return err;
|
||||
goto err_execbuf_client;
|
||||
|
||||
guc_reset_wq(client);
|
||||
|
||||
err = guc_init_doorbell_hw(guc);
|
||||
if (err)
|
||||
return err;
|
||||
goto err_execbuf_client;
|
||||
|
||||
/* Take over from manual control of ELSP (execlists) */
|
||||
guc_interrupts_capture(dev_priv);
|
||||
@ -1221,6 +1243,11 @@ int i915_guc_submission_enable(struct drm_i915_private *dev_priv)
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_execbuf_client:
|
||||
guc_client_free(guc->execbuf_client);
|
||||
guc->execbuf_client = NULL;
|
||||
return err;
|
||||
}
|
||||
|
||||
static void guc_interrupts_release(struct drm_i915_private *dev_priv)
|
||||
@ -1253,16 +1280,11 @@ void i915_guc_submission_disable(struct drm_i915_private *dev_priv)
|
||||
|
||||
guc_interrupts_release(dev_priv);
|
||||
|
||||
if (!guc->execbuf_client)
|
||||
return;
|
||||
|
||||
/* FIXME: in many cases, by the time we get here the GuC has been
|
||||
* reset, so we cannot destroy the doorbell properly. Ignore the
|
||||
* error message for now */
|
||||
destroy_doorbell(guc->execbuf_client);
|
||||
|
||||
/* Revert back to manual ELSP submission */
|
||||
intel_engines_reset_default_submission(dev_priv);
|
||||
|
||||
guc_client_free(guc->execbuf_client);
|
||||
guc->execbuf_client = NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -1291,7 +1313,6 @@ int intel_guc_suspend(struct drm_i915_private *dev_priv)
|
||||
return intel_guc_send(guc, data, ARRAY_SIZE(data));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* intel_guc_resume() - notify GuC resuming from suspend state
|
||||
* @dev_priv: i915 device private
|
||||
|
||||
@ -126,13 +126,15 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
|
||||
/* We need to notify the guc whenever we change the GGTT */
|
||||
i915_ggtt_enable_guc(dev_priv);
|
||||
|
||||
/*
|
||||
* This is stuff we need to have available at fw load time
|
||||
* if we are planning to enable submission later
|
||||
*/
|
||||
ret = i915_guc_submission_init(dev_priv);
|
||||
if (ret)
|
||||
goto err_guc;
|
||||
if (i915.enable_guc_submission) {
|
||||
/*
|
||||
* This is stuff we need to have available at fw load time
|
||||
* if we are planning to enable submission later
|
||||
*/
|
||||
ret = i915_guc_submission_init(dev_priv);
|
||||
if (ret)
|
||||
goto err_guc;
|
||||
}
|
||||
|
||||
/* WaEnableuKernelHeaderValidFix:skl */
|
||||
/* WaEnableGuCBootHashCheckNotSet:skl,bxt,kbl */
|
||||
@ -187,7 +189,8 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
|
||||
err_interrupts:
|
||||
gen9_disable_guc_interrupts(dev_priv);
|
||||
err_submission:
|
||||
i915_guc_submission_fini(dev_priv);
|
||||
if (i915.enable_guc_submission)
|
||||
i915_guc_submission_fini(dev_priv);
|
||||
err_guc:
|
||||
i915_ggtt_disable_guc(dev_priv);
|
||||
|
||||
@ -210,8 +213,8 @@ void intel_uc_fini_hw(struct drm_i915_private *dev_priv)
|
||||
if (i915.enable_guc_submission) {
|
||||
i915_guc_submission_disable(dev_priv);
|
||||
gen9_disable_guc_interrupts(dev_priv);
|
||||
i915_guc_submission_fini(dev_priv);
|
||||
}
|
||||
i915_guc_submission_fini(dev_priv);
|
||||
i915_ggtt_disable_guc(dev_priv);
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user