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| author | Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> | 2019-06-21 11:21:22 -0700 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-06-21 19:47:33 +0100 |
| commit | e29cc1d7e820d662d2d73b35281b70f01a24610b (patch) | |
| tree | 72c6cec40b6023a49eb605d9f4a49f8c8a0afd59 /drivers/gpu/drm/i915/intel_uc.c | |
| parent | 80fc1c1991cdaefb9d5c9733c6c5b85b92498eee (diff) | |
| download | linux-e29cc1d7e820d662d2d73b35281b70f01a24610b.tar.gz linux-e29cc1d7e820d662d2d73b35281b70f01a24610b.tar.bz2 linux-e29cc1d7e820d662d2d73b35281b70f01a24610b.zip | |
drm/i915/guc: reorder enable/disable communication steps
Make sure we always have CT buffers enabled when the interrupts are
enabled, so we can always handle interrupts from GuC. Also move the
setting of the guc->send and guc->handler functions to the GuC
communication control functions for consistency.
The reorder also fixes the onion unwinding of intel_uc_init_hw, because
guc_enable_communication would've left interrupts enabled when failing
to enable CTB.
v2: always retunr the result of ctch_enable() in
intel_guc_ct_enable() (Michal)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110943
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190621182123.31368-1-daniele.ceraolospurio@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_uc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_uc.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c index ae45651ac73c..c7f82c944dd6 100644 --- a/drivers/gpu/drm/i915/intel_uc.c +++ b/drivers/gpu/drm/i915/intel_uc.c @@ -235,9 +235,20 @@ static void guc_disable_interrupts(struct intel_guc *guc) static int guc_enable_communication(struct intel_guc *guc) { + int ret; + + ret = intel_guc_ct_enable(&guc->ct); + if (ret) + return ret; + + guc->send = intel_guc_send_ct; + guc->handler = intel_guc_to_host_event_handler_ct; + guc_enable_interrupts(guc); - return intel_guc_ct_enable(&guc->ct); + DRM_INFO("GuC communication enabled\n"); + + return 0; } static void guc_stop_communication(struct intel_guc *guc) @@ -250,12 +261,14 @@ static void guc_stop_communication(struct intel_guc *guc) static void guc_disable_communication(struct intel_guc *guc) { - intel_guc_ct_disable(&guc->ct); - guc_disable_interrupts(guc); guc->send = intel_guc_send_nop; guc->handler = intel_guc_to_host_event_handler_nop; + + intel_guc_ct_disable(&guc->ct); + + DRM_INFO("GuC communication disabled\n"); } int intel_uc_init_misc(struct drm_i915_private *i915) |