On Tue, 04 Feb 2020 00:28:37 +0100, Daniele Ceraolo Spurio
<daniele.ceraolospu...@intel.com> wrote:
We are quite trigger happy in cleaning up the firmware blobs, as we do
so from several error/fini paths in GuC/HuC/uC code. We do have the
__uc_cleanup_firmwares cleanup function, which unwinds
__uc_fetch_firmwares and is already called both from the error path of
gem_init and from gem_driver_release, so let's stop cleaning up from
all the other paths.
The fact that we're not cleaning the firmware immediately means that
we can't consider firmware availability as an indication of
initialization success. A "READY_TO_LOAD" status has been added to
what about s/READY_TO_LOAD/LOADABLE ?
indicate that the initialization was successful, to be used to
selectively load HuC only if HuC init has completed (HuC init failure
is not considered a fatal error).
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospu...@intel.com>
Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdec...@intel.com>
---
drivers/gpu/drm/i915/gt/uc/intel_guc.c | 10 ++++------
drivers/gpu/drm/i915/gt/uc/intel_huc.c | 3 ++-
drivers/gpu/drm/i915/gt/uc/intel_uc.c | 2 +-
drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 7 +++++--
drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h | 18 +++++++++++++++---
5 files changed, 27 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index 97b9c71a6fd4..2d05de570bdf 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -333,7 +333,7 @@ int intel_guc_init(struct intel_guc *guc)
ret = intel_uc_fw_init(&guc->fw);
if (ret)
- goto err_fetch;
+ goto out;
ret = intel_guc_log_create(&guc->log);
if (ret)
@@ -364,6 +364,8 @@ int intel_guc_init(struct intel_guc *guc)
/* We need to notify the guc whenever we change the GGTT */
i915_ggtt_enable_guc(gt->ggtt);
+ intel_uc_fw_change_status(&guc->fw, INTEL_UC_FIRMWARE_READY_TO_LOAD);
+
return 0;
err_ct:
@@ -374,8 +376,7 @@ int intel_guc_init(struct intel_guc *guc)
intel_guc_log_destroy(&guc->log);
err_fw:
intel_uc_fw_fini(&guc->fw);
-err_fetch:
- intel_uc_fw_cleanup_fetch(&guc->fw);
+out:
i915_probe_error(gt->i915, "failed with %d\n", ret);
return ret;
}
@@ -397,9 +398,6 @@ void intel_guc_fini(struct intel_guc *guc)
intel_guc_ads_destroy(guc);
intel_guc_log_destroy(&guc->log);
intel_uc_fw_fini(&guc->fw);
- intel_uc_fw_cleanup_fetch(&guc->fw);
-
- intel_uc_fw_change_status(&guc->fw, INTEL_UC_FIRMWARE_DISABLED);
}
/*
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc.c
b/drivers/gpu/drm/i915/gt/uc/intel_huc.c
index 5f448d0e360b..2e4f4a8e791e 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_huc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_huc.c
@@ -121,12 +121,13 @@ int intel_huc_init(struct intel_huc *huc)
if (err)
goto out_fini;
+ intel_uc_fw_change_status(&huc->fw, INTEL_UC_FIRMWARE_READY_TO_LOAD);
+
return 0;
out_fini:
intel_uc_fw_fini(&huc->fw);
out:
- intel_uc_fw_cleanup_fetch(&huc->fw);
i915_probe_error(i915, "failed with %d\n", err);
return err;
}
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index a119b7776973..4c55b1285cbc 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -417,7 +417,7 @@ static int __uc_init_hw(struct intel_uc *uc)
GEM_BUG_ON(!intel_uc_supports_guc(uc));
GEM_BUG_ON(!intel_uc_wants_guc(uc));
- if (!intel_uc_fw_is_available(&guc->fw)) {
+ if (!intel_uc_fw_is_ready_to_load(&guc->fw)) {
ret = __uc_check_hw(uc) ||
intel_uc_fw_is_overridden(&guc->fw) ||
intel_uc_wants_guc_submission(uc) ?
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
index c9c094a73399..3759569ec000 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -501,7 +501,7 @@ int intel_uc_fw_upload(struct intel_uc_fw *uc_fw,
u32 dst_offset, u32 dma_flags)
if (err)
return err;
- if (!intel_uc_fw_is_available(uc_fw))
+ if (!intel_uc_fw_is_ready_to_load(uc_fw))
return -ENOEXEC;
/* Call custom loader */
@@ -544,7 +544,10 @@ int intel_uc_fw_init(struct intel_uc_fw *uc_fw)
void intel_uc_fw_fini(struct intel_uc_fw *uc_fw)
{
- intel_uc_fw_cleanup_fetch(uc_fw);
+ if (i915_gem_object_has_pinned_pages(uc_fw->obj))
+ i915_gem_object_unpin_pages(uc_fw->obj);
+
+ intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_AVAILABLE);
}
/**
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
index 1f30543d0d2d..ba3c362aeca2 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
@@ -29,8 +29,11 @@ struct intel_gt;
* | | SELECTED |
* +------------+- / | \ -+
* | | MISSING <--/ | \--> ERROR |
- * | fetch | | |
- * | | /------> AVAILABLE <---<-----------\ |
+ * | fetch | V |
+ * | | AVAILABLE |
+ * | | | |
as we change status during "init" phase, we should also mark it here
+------------+- -+
| init | |
+ * | | V |
+ * | | /----> READY TO LOAD <---<---------\ |
* +------------+- \ / \ \ \ -+
* | | FAIL <--< \--> TRANSFERRED \ |
* | upload | \ / \ / |
@@ -46,6 +49,7 @@ enum intel_uc_fw_status {
INTEL_UC_FIRMWARE_MISSING, /* blob not found on the system */
INTEL_UC_FIRMWARE_ERROR, /* invalid format or version */
INTEL_UC_FIRMWARE_AVAILABLE, /* blob found and copied in mem */
+ INTEL_UC_FIRMWARE_READY_TO_LOAD, /* all fw-required objects are ready
*/
INTEL_UC_FIRMWARE_FAIL, /* failed to xfer or init/auth the fw */
INTEL_UC_FIRMWARE_TRANSFERRED, /* dma xfer done */
INTEL_UC_FIRMWARE_RUNNING /* init/auth done */
@@ -115,6 +119,8 @@ const char *intel_uc_fw_status_repr(enum
intel_uc_fw_status status)
return "ERROR";
case INTEL_UC_FIRMWARE_AVAILABLE:
return "AVAILABLE";
+ case INTEL_UC_FIRMWARE_READY_TO_LOAD:
+ return "READY TO LOAD";
case INTEL_UC_FIRMWARE_FAIL:
return "FAIL";
case INTEL_UC_FIRMWARE_TRANSFERRED:
@@ -143,6 +149,7 @@ static inline int intel_uc_fw_status_to_error(enum
intel_uc_fw_status status)
case INTEL_UC_FIRMWARE_SELECTED:
return -ESTALE;
case INTEL_UC_FIRMWARE_AVAILABLE:
+ case INTEL_UC_FIRMWARE_READY_TO_LOAD:
case INTEL_UC_FIRMWARE_TRANSFERRED:
case INTEL_UC_FIRMWARE_RUNNING:
return 0;
@@ -184,6 +191,11 @@ static inline bool intel_uc_fw_is_available(struct
intel_uc_fw *uc_fw)
return __intel_uc_fw_status(uc_fw) >= INTEL_UC_FIRMWARE_AVAILABLE;
}
+static inline bool intel_uc_fw_is_ready_to_load(struct intel_uc_fw
*uc_fw)
+{
+ return __intel_uc_fw_status(uc_fw) == INTEL_UC_FIRMWARE_READY_TO_LOAD;
+}
+
static inline bool intel_uc_fw_is_loaded(struct intel_uc_fw *uc_fw)
{
return __intel_uc_fw_status(uc_fw) >= INTEL_UC_FIRMWARE_TRANSFERRED;
@@ -202,7 +214,7 @@ static inline bool intel_uc_fw_is_overridden(const
struct intel_uc_fw *uc_fw)
static inline void intel_uc_fw_sanitize(struct intel_uc_fw *uc_fw)
{
if (intel_uc_fw_is_loaded(uc_fw))
- intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_AVAILABLE);
+ intel_uc_fw_change_status(uc_fw,
INTEL_UC_FIRMWARE_READY_TO_LOAD);
}
static inline u32 __intel_uc_fw_get_upload_size(struct intel_uc_fw
*uc_fw)
in the future we should never try to hide intermediate states,
with above nits,
Reviewed-by: Michal Wajdeczko <michal.wajdec...@intel.com>
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