To be able to setup GuC submission functions during engine init we need
to commit to using GuC as soon as possible.
Currently, the only thing that can stop us from using the
microcontrollers once we've fetched the blobs is a fundamental
error (e.g. OOM); given that if we hit such an error we can't really
fall-back to anything, we can "officialize" the FW fetching completion
as the moment at which we're committing to using GuC.
To better differentiate this case, the uses_guc check, which indicates
that GuC is supported and was selected in modparam, is renamed to
wants_guc and a new uses_guc is introduced to represent the case were
we're committed to using the GuC. Note that uses_guc does still not imply
that the blob is actually loaded on the HW (is_running is the check for
that). Also, since we need to have attempted the fetch for the result
of uses_guc to be meaningful, we need to make sure we've moved away
from INTEL_UC_FIRMWARE_SELECTED.
All the GuC changes have been mirrored on the HuC for coherency.
v2: split fetch return changes and new macros to their own patches,
support HuC only if GuC is wanted, improve "used" state
description (Michal)
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: John Harrison <John.C.Harrison@xxxxxxxxx>
Cc: Matthew Brost <matthew.brost@xxxxxxxxx>
Reviewed-by: Fernando Pacheco <fernando.pacheco@xxxxxxxxx> #v1
---
drivers/gpu/drm/i915/gt/uc/intel_guc.h | 8 +++++++-
drivers/gpu/drm/i915/gt/uc/intel_huc.h | 8 +++++++-
drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c | 2 +-
drivers/gpu/drm/i915/gt/uc/intel_uc.c | 23 ++++++++++++----------
drivers/gpu/drm/i915/gt/uc/intel_uc.h | 24 ++++++++++++++++++++++-
5 files changed, 51 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h
b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
index 7ca9e5159f05..f6b33745ae0b 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
@@ -143,11 +143,17 @@ static inline bool intel_guc_is_supported(struct
intel_guc *guc)
return intel_uc_fw_is_supported(&guc->fw);
}
-static inline bool intel_guc_is_enabled(struct intel_guc *guc)
+static inline bool intel_guc_is_wanted(struct intel_guc *guc)
{
return intel_uc_fw_is_enabled(&guc->fw);
}
+static inline bool intel_guc_is_used(struct intel_guc *guc)
+{
+ GEM_BUG_ON(__intel_uc_fw_status(&guc->fw) ==
INTEL_UC_FIRMWARE_SELECTED);
+ return intel_uc_fw_is_available(&guc->fw);
+}
+
static inline bool intel_guc_is_fw_running(struct intel_guc *guc)
{
return intel_uc_fw_is_running(&guc->fw);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc.h
b/drivers/gpu/drm/i915/gt/uc/intel_huc.h
index 644c059fe01d..a40b9cfc6c22 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_huc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_huc.h
@@ -41,11 +41,17 @@ static inline bool intel_huc_is_supported(struct
intel_huc *huc)
return intel_uc_fw_is_supported(&huc->fw);
}
-static inline bool intel_huc_is_enabled(struct intel_huc *huc)
+static inline bool intel_huc_is_wanted(struct intel_huc *huc)
{
return intel_uc_fw_is_enabled(&huc->fw);
}
+static inline bool intel_huc_is_used(struct intel_huc *huc)
+{
+ GEM_BUG_ON(__intel_uc_fw_status(&huc->fw) ==
INTEL_UC_FIRMWARE_SELECTED);
+ return intel_uc_fw_is_available(&huc->fw);
+}
+
static inline bool intel_huc_is_authenticated(struct intel_huc *huc)
{
return intel_uc_fw_is_running(&huc->fw);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
b/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
index eee193bf2cc4..9cdf4cbe691c 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
@@ -20,7 +20,7 @@ void intel_huc_fw_init_early(struct intel_huc *huc)
struct drm_i915_private *i915 = gt->i915;
intel_uc_fw_init_early(&huc->fw, INTEL_UC_FW_TYPE_HUC,
- intel_uc_uses_guc(uc),
+ intel_uc_wants_guc(uc),
INTEL_INFO(i915)->platform, INTEL_REVID(i915));
}
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index affc4d6f9ead..654d7c0c757a 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -48,17 +48,17 @@ static void __confirm_options(struct intel_uc *uc)
DRM_DEV_DEBUG_DRIVER(i915->drm.dev,
"enable_guc=%d (guc:%s submission:%s huc:%s)\n",
i915_modparams.enable_guc,
- yesno(intel_uc_uses_guc(uc)),
+ yesno(intel_uc_wants_guc(uc)),
yesno(intel_uc_uses_guc_submission(uc)),
- yesno(intel_uc_uses_huc(uc)));
+ yesno(intel_uc_wants_huc(uc)));
if (i915_modparams.enable_guc == -1)
return;
if (i915_modparams.enable_guc == 0) {
- GEM_BUG_ON(intel_uc_uses_guc(uc));
+ GEM_BUG_ON(intel_uc_wants_guc(uc));
GEM_BUG_ON(intel_uc_uses_guc_submission(uc));
- GEM_BUG_ON(intel_uc_uses_huc(uc));
+ GEM_BUG_ON(intel_uc_wants_huc(uc));
return;
}
@@ -93,7 +93,7 @@ void intel_uc_init_early(struct intel_uc *uc)
__confirm_options(uc);
- if (intel_uc_uses_guc(uc))
+ if (intel_uc_wants_guc(uc))
uc->ops = &uc_ops_on;
else
uc->ops = &uc_ops_off;
@@ -257,13 +257,13 @@ static void __uc_fetch_firmwares(struct intel_uc
*uc)
{
int err;
- GEM_BUG_ON(!intel_uc_uses_guc(uc));
+ GEM_BUG_ON(!intel_uc_wants_guc(uc));
err = intel_uc_fw_fetch(&uc->guc.fw);
if (err)
return;
- if (intel_uc_uses_huc(uc))
+ if (intel_uc_wants_huc(uc))
intel_uc_fw_fetch(&uc->huc.fw);
}
@@ -279,7 +279,10 @@ static void __uc_init(struct intel_uc *uc)
struct intel_huc *huc = &uc->huc;
int ret;
- GEM_BUG_ON(!intel_uc_uses_guc(uc));
+ GEM_BUG_ON(!intel_uc_wants_guc(uc));
+
+ if (!intel_uc_uses_guc(uc))
+ return;
/* XXX: GuC submission is unavailable for now */
GEM_BUG_ON(intel_uc_supports_guc_submission(uc));
@@ -322,7 +325,7 @@ static int uc_init_wopcm(struct intel_uc *uc)
struct intel_uncore *uncore = gt->uncore;
u32 base = intel_wopcm_guc_base(>->i915->wopcm);
u32 size = intel_wopcm_guc_size(>->i915->wopcm);
- u32 huc_agent = intel_uc_uses_huc(uc) ? HUC_LOADING_AGENT_GUC : 0;
+ u32 huc_agent = intel_uc_wants_huc(uc) ? HUC_LOADING_AGENT_GUC : 0;
