diff options
| author | Oscar Mateo <oscar.mateo@intel.com> | 2017-03-22 10:39:49 -0700 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2017-03-23 14:58:11 +0200 |
| commit | 5e7cd37d68673d2f51d1bdd2e60f42289831af54 (patch) | |
| tree | c714c6e09c7b03cd66b76c3067b429294c9c4efc /drivers/gpu/drm/i915/intel_uc.c | |
| parent | e74654738baf465c92f0eec37ce4be891bac36da (diff) | |
| download | linux-stable-5e7cd37d68673d2f51d1bdd2e60f42289831af54.tar.gz linux-stable-5e7cd37d68673d2f51d1bdd2e60f42289831af54.tar.bz2 linux-stable-5e7cd37d68673d2f51d1bdd2e60f42289831af54.zip | |
drm/i915/guc: Make intel_guc_send a function pointer
Prepare for an alternate GuC communication interface.
v2: Make a few functions static and name them correctly while we are at it (Oscar), but
leave an intel_guc_send_mmio interface for users that require old-style communication.
v3: Send intel_uc_init_early back to the top (Michal).
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_uc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_uc.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c index 438e8f32abde..0b8b2505a44a 100644 --- a/drivers/gpu/drm/i915/intel_uc.c +++ b/drivers/gpu/drm/i915/intel_uc.c @@ -83,7 +83,10 @@ void intel_uc_sanitize_options(struct drm_i915_private *dev_priv) void intel_uc_init_early(struct drm_i915_private *dev_priv) { - mutex_init(&dev_priv->guc.send_mutex); + struct intel_guc *guc = &dev_priv->guc; + + mutex_init(&guc->send_mutex); + guc->send = intel_guc_send_mmio; } void intel_uc_init_fw(struct drm_i915_private *dev_priv) @@ -216,7 +219,7 @@ void intel_uc_fini_hw(struct drm_i915_private *dev_priv) * Read GuC command/status register (SOFT_SCRATCH_0) * Return true if it contains a response rather than a command */ -static bool intel_guc_recv(struct intel_guc *guc, u32 *status) +static bool guc_recv(struct intel_guc *guc, u32 *status) { struct drm_i915_private *dev_priv = guc_to_i915(guc); @@ -225,7 +228,10 @@ static bool intel_guc_recv(struct intel_guc *guc, u32 *status) return INTEL_GUC_RECV_IS_RESPONSE(val); } -int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len) +/* + * This function implements the MMIO based host to GuC interface. + */ +int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len) { struct drm_i915_private *dev_priv = guc_to_i915(guc); u32 status; @@ -253,9 +259,9 @@ int intel_guc_send(struct intel_guc *guc, const u32 *action, u32 len) * up to that length of time, then switch to a slower sleep-wait loop. * No inte_guc_send command should ever take longer than 10ms. */ - ret = wait_for_us(intel_guc_recv(guc, &status), 10); + ret = wait_for_us(guc_recv(guc, &status), 10); if (ret) - ret = wait_for(intel_guc_recv(guc, &status), 10); + ret = wait_for(guc_recv(guc, &status), 10); if (status != INTEL_GUC_STATUS_SUCCESS) { /* * Either the GuC explicitly returned an error (which |