Parameter guc_log_level needs to be sanitized based on GuC support and
enable_guc_loading parameter since it depends on them like
enable_guc_submission. This will make GuC logging paths independent of
enable_guc_submission parameter in further patches.
v2: Added documentation to intel_guc_log.c and param description about
GuC loading dependency. (Michal Wajdeczko)
Signed-off-by: Sagar Arun Kamble <sagar.a.kam...@intel.com>
Cc: Michal Wajdeczko <michal.wajdec...@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospu...@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahti...@linux.intel.com>
---
drivers/gpu/drm/i915/i915_params.c | 4 +++-
drivers/gpu/drm/i915/intel_guc_log.c | 1 +
drivers/gpu/drm/i915/intel_uc.c | 10 +++++++---
3 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_params.c
b/drivers/gpu/drm/i915/i915_params.c
index b4faeb6..774c56e 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -171,7 +171,9 @@ struct i915_params i915_modparams __read_mostly = {
"(-1=auto, 0=never [default], 1=if available, 2=required)");
i915_param_named(guc_log_level, int, 0400,
- "GuC firmware logging level (-1:disabled (default), 0-3:enabled)");
+ "GuC firmware logging level. This takes effect only if GuC is to be "
+ "loaded (depends on enable_guc_loading) (-1:disabled (default), "
+ "0-3:enabled)");
i915_param_named_unsafe(guc_firmware_path, charp, 0400,
"GuC firmware path to use instead of the default one");
diff --git a/drivers/gpu/drm/i915/intel_guc_log.c
b/drivers/gpu/drm/i915/intel_guc_log.c
index f53c663..200f0a1 100644
--- a/drivers/gpu/drm/i915/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/intel_guc_log.c
@@ -34,6 +34,7 @@
* DOC: GuC firmware log
*
* Firmware log is enabled by setting i915.guc_log_level to non-negative level.
+ * This takes effect only if GuC is to be loaded based on enable_guc_loading.
* Log data is printed out via reading debugfs i915_guc_log_dump. Reading from
* i915_guc_load_status will print out firmware loading status and scratch
* registers value.
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index 62738ad..8feefcd 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -51,11 +51,13 @@ void intel_uc_sanitize_options(struct drm_i915_private
*dev_priv)
{
if (!HAS_GUC(dev_priv)) {
if (i915_modparams.enable_guc_loading > 0 ||
- i915_modparams.enable_guc_submission > 0)
+ i915_modparams.enable_guc_submission > 0 ||
+ i915_modparams.guc_log_level > 0)
DRM_INFO("Ignoring GuC options, no hardware\n");
i915_modparams.enable_guc_loading = 0;
i915_modparams.enable_guc_submission = 0;
+ i915_modparams.guc_log_level = -1;
return;
}
@@ -72,9 +74,11 @@ void intel_uc_sanitize_options(struct drm_i915_private
*dev_priv)
i915_modparams.enable_guc_loading = 0;
}
- /* Can't enable guc submission without guc loaded */
- if (!i915_modparams.enable_guc_loading)
+ /* Can't enable guc submission and logging without guc loaded */
+ if (!i915_modparams.enable_guc_loading) {
i915_modparams.enable_guc_submission = 0;
+ i915_modparams.guc_log_level = -1;
+ }
/* A negative value means "use platform default" */
if (i915_modparams.enable_guc_submission < 0)
--
1.9.1
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