Waiting for the response status in scratch register can be done
using our generic function. Let's use it.
v2: rebased
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_uc.c | 26 +++++++-------------------
1 file changed, 7 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index c117424..4364b1a 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -360,19 +360,6 @@ 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 guc_recv(struct intel_guc *guc, u32 *status)
-{
- struct drm_i915_private *dev_priv = guc_to_i915(guc);
-
- u32 val = I915_READ(SOFT_SCRATCH(0));
- *status = val;
- return INTEL_GUC_RECV_IS_RESPONSE(val);
-}
-
-/*
* This function implements the MMIO based host to GuC interface.
*/
int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len)
@@ -399,13 +386,14 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len)
I915_WRITE(GUC_SEND_INTERRUPT, GUC_SEND_TRIGGER);
/*
- * Fast commands should complete in less than 10us, so sample quickly
- * 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.
+ * No GuC command should ever take longer than 10ms.
+ * Fast commands should still complete in 10us.
*/
- ret = wait_for_us(guc_recv(guc, &status), 10);
- if (ret)
- ret = wait_for(guc_recv(guc, &status), 10);
+ ret = __intel_wait_for_register_fw(dev_priv,
+ SOFT_SCRATCH(0),
+ INTEL_GUC_RECV_MASK,
+ INTEL_GUC_RECV_MASK,
+ 10, 10, &status);
if (status != INTEL_GUC_STATUS_SUCCESS) {
/*
* Either the GuC explicitly returned an error (which
--
2.7.4
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