UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915/guc: Allow preempt-client to be NULL 

In the next patch, we may only conditionally allocate the preempt-client
if there is a global preempt context and so we need to be prepared in
case the preempt-client itself is NULL.

v2: Grep for more preempt_client.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180207210544.26351-1-chris@chris-wilson.co.uk
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
This commit is contained in:
Chris Wilson 2018-02-07 21:05:42 +00:00
parent 05273c950a
commit e78c91754d
3 changed files with 33 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/i915/i915_debugfs.c
View File

@ -2338,7 +2338,6 @@ static int i915_guc_info(struct seq_file *m, void *data)
return -ENODEV;
GEM_BUG_ON(!guc->execbuf_client);
GEM_BUG_ON(!guc->preempt_client);
seq_printf(m, "Doorbell map:\n");
seq_printf(m, "\t%*pb\n", GUC_NUM_DOORBELLS, guc->doorbell_bitmap);
@ -2346,8 +2345,11 @@ static int i915_guc_info(struct seq_file *m, void *data)
seq_printf(m, "\nGuC execbuf client @ %p:\n", guc->execbuf_client);
i915_guc_client_info(m, dev_priv, guc->execbuf_client);
seq_printf(m, "\nGuC preempt client @ %p:\n", guc->preempt_client);
i915_guc_client_info(m, dev_priv, guc->preempt_client);
if (guc->preempt_client) {
seq_printf(m, "\nGuC preempt client @ %p:\n",
guc->preempt_client);
i915_guc_client_info(m, dev_priv, guc->preempt_client);
}
i915_guc_log_info(m, dev_priv);

27
drivers/gpu/drm/i915/intel_guc_submission.c
View File

@ -832,10 +832,12 @@ static int guc_clients_doorbell_init(struct intel_guc *guc)
if (ret)
return ret;
ret = create_doorbell(guc->preempt_client);
if (ret) {
destroy_doorbell(guc->execbuf_client);
return ret;
if (guc->preempt_client) {
ret = create_doorbell(guc->preempt_client);
if (ret) {
destroy_doorbell(guc->execbuf_client);
return ret;
}
}
return 0;
@ -848,8 +850,11 @@ static void guc_clients_doorbell_fini(struct intel_guc *guc)
* Instead of trying (in vain) to communicate with it, let's just
* cleanup the doorbell HW and our internal state.
*/
__destroy_doorbell(guc->preempt_client);
__update_doorbell_desc(guc->preempt_client, GUC_DOORBELL_INVALID);
if (guc->preempt_client) {
__destroy_doorbell(guc->preempt_client);
__update_doorbell_desc(guc->preempt_client,
GUC_DOORBELL_INVALID);
}
__destroy_doorbell(guc->execbuf_client);
__update_doorbell_desc(guc->execbuf_client, GUC_DOORBELL_INVALID);
}
@ -998,10 +1003,11 @@ static void guc_clients_destroy(struct intel_guc *guc)
{
struct intel_guc_client *client;
client = fetch_and_zero(&guc->execbuf_client);
guc_client_free(client);
client = fetch_and_zero(&guc->preempt_client);
if (client)
guc_client_free(client);
client = fetch_and_zero(&guc->execbuf_client);
guc_client_free(client);
}
@ -1160,7 +1166,8 @@ int intel_guc_submission_enable(struct intel_guc *guc)
GEM_BUG_ON(!guc->execbuf_client);
guc_reset_wq(guc->execbuf_client);
guc_reset_wq(guc->preempt_client);
if (guc->preempt_client)
guc_reset_wq(guc->preempt_client);
err = intel_guc_sample_forcewake(guc);
if (err)

20
drivers/gpu/drm/i915/selftests/intel_guc.c
View File

@ -87,7 +87,7 @@ static int validate_client(struct intel_guc_client *client,
static bool client_doorbell_in_sync(struct intel_guc_client *client)
{
return doorbell_ok(client->guc, client->doorbell_id);
return !client || doorbell_ok(client->guc, client->doorbell_id);
}
/*
@ -137,7 +137,6 @@ static int igt_guc_clients(void *args)
goto unlock;
}
GEM_BUG_ON(!guc->execbuf_client);
GEM_BUG_ON(!guc->preempt_client);
err = validate_client(guc->execbuf_client,
GUC_CLIENT_PRIORITY_KMD_NORMAL, false);
@ -146,16 +145,18 @@ static int igt_guc_clients(void *args)
goto out;
}
err = validate_client(guc->preempt_client,
GUC_CLIENT_PRIORITY_KMD_HIGH, true);
if (err) {
pr_err("preempt client validation failed\n");
goto out;
if (guc->preempt_client) {
err = validate_client(guc->preempt_client,
GUC_CLIENT_PRIORITY_KMD_HIGH, true);
if (err) {
pr_err("preempt client validation failed\n");
goto out;
}
}
/* each client should now have reserved a doorbell */
if (!has_doorbell(guc->execbuf_client) ||
!has_doorbell(guc->preempt_client)) {
(guc->preempt_client && !has_doorbell(guc->preempt_client))) {
pr_err("guc_clients_create didn't reserve doorbells\n");
err = -EINVAL;
goto out;
@ -224,7 +225,8 @@ out:
* clients during unload.
*/
destroy_doorbell(guc->execbuf_client);
destroy_doorbell(guc->preempt_client);
if (guc->preempt_client)
destroy_doorbell(guc->preempt_client);
guc_clients_destroy(guc);
guc_clients_create(guc);
guc_clients_doorbell_init(guc);