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| author | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2018-03-26 22:48:19 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-03-28 22:35:10 +0300 |
| commit | b839a869dfc9f01aab72c5dd26cb7a7f2e264201 (patch) | |
| tree | 6c81b68850ce1f8ee84e6ba3c93e0ab0286d824f /drivers/gpu/drm/i915/intel_guc.c | |
| parent | 4d82a174847b1b2d5e541ca7040398ac56efed7b (diff) | |
| download | linux-b839a869dfc9f01aab72c5dd26cb7a7f2e264201.tar.xz | |
drm/i915/guc: Add support for data reporting in GuC responses
GuC may return additional data in the response message.
Format and meaning of this data is action specific. We will
use this non-negative data as a new success return value.
Currently used actions don't return data that way yet.
v2: fix prohibited space after '~' (Michel)
update commit message (Daniele)
v3: rebase
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180326194829.58836-3-michal.wajdeczko@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_guc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_guc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c index 78e68b169cf2..1af32a0648db 100644 --- a/drivers/gpu/drm/i915/intel_guc.c +++ b/drivers/gpu/drm/i915/intel_guc.c @@ -366,6 +366,9 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len) " ret=%d status=0x%08X response=0x%08X\n", action[0], ret, status, I915_READ(SOFT_SCRATCH(15))); + } else { + /* Use data from the GuC response as our return value */ + ret = INTEL_GUC_MSG_TO_DATA(status); } intel_uncore_forcewake_put(dev_priv, guc->send_regs.fw_domains); |