Merge tag 'drm-intel-next-fixes-2021-06-29' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

The biggest fix is the restoration of mmap ioctl for gen12 integrated parts
which lack was breaking ADL-P with media stack.
Besides that a small selftest fix and a theoretical overflow on
i915->pipe_to_crtc_mapping.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YNtsfguvCRSROBUZ@intel.com

Author: airlied

drivers/gpu/drm/i915/display/intel_display.c

@@ -9618,7 +9618,6 @@ static int intel_atomic_check_bigjoiner(struct intel_atomic_state *state,
 					struct intel_crtc_state *old_crtc_state,
 					struct intel_crtc_state *new_crtc_state)
 {
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
 	struct intel_crtc_state *slave_crtc_state, *master_crtc_state;
 	struct intel_crtc *slave, *master;
 
@@ -9634,15 +9633,15 @@ static int intel_atomic_check_bigjoiner(struct intel_atomic_state *state,
 	if (!new_crtc_state->bigjoiner)
 		return 0;
 
-	if (1 + crtc->pipe >= INTEL_NUM_PIPES(dev_priv)) {
+	slave = intel_dsc_get_bigjoiner_secondary(crtc);
+	if (!slave) {
 		DRM_DEBUG_KMS("[CRTC:%d:%s] Big joiner configuration requires "
 			      "CRTC + 1 to be used, doesn't exist\n",
 			      crtc->base.base.id, crtc->base.name);
 		return -EINVAL;
 	}
 
-	slave = new_crtc_state->bigjoiner_linked_crtc =
-		intel_get_crtc_for_pipe(dev_priv, crtc->pipe + 1);
+	new_crtc_state->bigjoiner_linked_crtc = slave;
 	slave_crtc_state = intel_atomic_get_crtc_state(&state->base, slave);
 	master = crtc;
 	if (IS_ERR(slave_crtc_state))

drivers/gpu/drm/i915/display/intel_display_types.h

@@ -1723,6 +1723,14 @@ vlv_pipe_to_channel(enum pipe pipe)
 	}
 }
 
+static inline bool intel_pipe_valid(struct drm_i915_private *i915, enum pipe pipe)
+{
+	return (pipe >= 0 &&
+		pipe < ARRAY_SIZE(i915->pipe_to_crtc_mapping) &&
+		INTEL_INFO(i915)->pipe_mask & BIT(pipe) &&
+		i915->pipe_to_crtc_mapping[pipe]);
+}
+
 static inline struct intel_crtc *
 intel_get_first_crtc(struct drm_i915_private *dev_priv)
 {

drivers/gpu/drm/i915/display/intel_vdsc.c

@@ -1106,6 +1106,27 @@ static i915_reg_t dss_ctl2_reg(const struct intel_crtc_state *crtc_state)
 	return is_pipe_dsc(crtc_state) ? ICL_PIPE_DSS_CTL2(pipe) : DSS_CTL2;
 }
 
+static struct intel_crtc *
+_get_crtc_for_pipe(struct drm_i915_private *i915, enum pipe pipe)
+{
+	if (!intel_pipe_valid(i915, pipe))
+		return NULL;
+
+	return intel_get_crtc_for_pipe(i915, pipe);
+}
+
+struct intel_crtc *
+intel_dsc_get_bigjoiner_secondary(const struct intel_crtc *primary_crtc)
+{
+	return _get_crtc_for_pipe(to_i915(primary_crtc->base.dev), primary_crtc->pipe + 1);
+}
+
+static struct intel_crtc *
+intel_dsc_get_bigjoiner_primary(const struct intel_crtc *secondary_crtc)
+{
+	return _get_crtc_for_pipe(to_i915(secondary_crtc->base.dev), secondary_crtc->pipe - 1);
+}
+
 void intel_uncompressed_joiner_enable(const struct intel_crtc_state *crtc_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
@@ -1178,15 +1199,13 @@ void intel_uncompressed_joiner_get_config(struct intel_crtc_state *crtc_state)
 	dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc_state));
 	if (dss_ctl1 & UNCOMPRESSED_JOINER_MASTER) {
 		crtc_state->bigjoiner = true;
-		if (!WARN_ON(INTEL_NUM_PIPES(dev_priv) == crtc->pipe + 1))
-			crtc_state->bigjoiner_linked_crtc =
-				intel_get_crtc_for_pipe(dev_priv, crtc->pipe + 1);
+		crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_secondary(crtc);
+		drm_WARN_ON(&dev_priv->drm, !crtc_state->bigjoiner_linked_crtc);
 	} else if (dss_ctl1 & UNCOMPRESSED_JOINER_SLAVE) {
 		crtc_state->bigjoiner = true;
 		crtc_state->bigjoiner_slave = true;
-		if (!WARN_ON(crtc->pipe == PIPE_A))
-			crtc_state->bigjoiner_linked_crtc =
-				intel_get_crtc_for_pipe(dev_priv, crtc->pipe - 1);
+		crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_primary(crtc);
+		drm_WARN_ON(&dev_priv->drm, !crtc_state->bigjoiner_linked_crtc);
 	}
 }
 
@@ -1224,14 +1243,11 @@ void intel_dsc_get_config(struct intel_crtc_state *crtc_state)
 
 		if (!(dss_ctl1 & MASTER_BIG_JOINER_ENABLE)) {
 			crtc_state->bigjoiner_slave = true;
-			if (!WARN_ON(crtc->pipe == PIPE_A))
-				crtc_state->bigjoiner_linked_crtc =
-					intel_get_crtc_for_pipe(dev_priv, crtc->pipe - 1);
+			crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_primary(crtc);
 		} else {
-			if (!WARN_ON(INTEL_NUM_PIPES(dev_priv) == crtc->pipe + 1))
-				crtc_state->bigjoiner_linked_crtc =
-					intel_get_crtc_for_pipe(dev_priv, crtc->pipe + 1);
+			crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_secondary(crtc);
 		}
+		drm_WARN_ON(&dev_priv->drm, !crtc_state->bigjoiner_linked_crtc);
 	}
 
 	/* FIXME: add more state readout as needed */

drivers/gpu/drm/i915/display/intel_vdsc.h

@@ -22,5 +22,6 @@ void intel_uncompressed_joiner_get_config(struct intel_crtc_state *crtc_state);
 void intel_dsc_get_config(struct intel_crtc_state *crtc_state);
 enum intel_display_power_domain
 intel_dsc_power_domain(const struct intel_crtc_state *crtc_state);
+struct intel_crtc *intel_dsc_get_bigjoiner_secondary(const struct intel_crtc *primary_crtc);
 
 #endif /* __INTEL_VDSC_H__ */

drivers/gpu/drm/i915/gem/i915_gem_mman.c

@@ -61,10 +61,11 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
 	struct drm_i915_gem_object *obj;
 	unsigned long addr;
 
-	/* mmap ioctl is disallowed for all platforms after TGL-LP.  This also
-	 * covers all platforms with local memory.
+	/*
+	 * mmap ioctl is disallowed for all discrete platforms,
+	 * and for all platforms with GRAPHICS_VER > 12.
 	 */
-	if (GRAPHICS_VER(i915) >= 12 && !IS_TIGERLAKE(i915))
+	if (IS_DGFX(i915) || GRAPHICS_VER(i915) > 12)
 		return -EOPNOTSUPP;
 
 	if (args->flags & ~(I915_MMAP_WC))

drivers/gpu/drm/i915/gt/selftest_execlists.c

@@ -551,6 +551,32 @@ static int live_pin_rewind(void *arg)
 	return err;
 }
 
+static int engine_lock_reset_tasklet(struct intel_engine_cs *engine)
+{
+	tasklet_disable(&engine->execlists.tasklet);
+	local_bh_disable();
+
+	if (test_and_set_bit(I915_RESET_ENGINE + engine->id,
+			     &engine->gt->reset.flags)) {
+		local_bh_enable();
+		tasklet_enable(&engine->execlists.tasklet);
+
+		intel_gt_set_wedged(engine->gt);
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+static void engine_unlock_reset_tasklet(struct intel_engine_cs *engine)
+{
+	clear_and_wake_up_bit(I915_RESET_ENGINE + engine->id,
+			      &engine->gt->reset.flags);
+
+	local_bh_enable();
+	tasklet_enable(&engine->execlists.tasklet);
+}
+
 static int live_hold_reset(void *arg)
 {
 	struct intel_gt *gt = arg;
@@ -598,15 +624,9 @@ static int live_hold_reset(void *arg)
 
 		/* We have our request executing, now remove it and reset */
 
-		local_bh_disable();
-		if (test_and_set_bit(I915_RESET_ENGINE + id,
-				     &gt->reset.flags)) {
-			local_bh_enable();
-			intel_gt_set_wedged(gt);
-			err = -EBUSY;
+		err = engine_lock_reset_tasklet(engine);
+		if (err)
 			goto out;
-		}
-		tasklet_disable(&engine->execlists.tasklet);
 
 		engine->execlists.tasklet.callback(&engine->execlists.tasklet);
 		GEM_BUG_ON(execlists_active(&engine->execlists) != rq);
@@ -618,10 +638,7 @@ static int live_hold_reset(void *arg)
 		__intel_engine_reset_bh(engine, NULL);
 		GEM_BUG_ON(rq->fence.error != -EIO);
 
-		tasklet_enable(&engine->execlists.tasklet);
-		clear_and_wake_up_bit(I915_RESET_ENGINE + id,
-				      &gt->reset.flags);
-		local_bh_enable();
+		engine_unlock_reset_tasklet(engine);
 
 		/* Check that we do not resubmit the held request */
 		if (!i915_request_wait(rq, 0, HZ / 5)) {
@@ -4585,15 +4602,9 @@ static int reset_virtual_engine(struct intel_gt *gt,
 	GEM_BUG_ON(engine == ve->engine);
 
 	/* Take ownership of the reset and tasklet */
-	local_bh_disable();
-	if (test_and_set_bit(I915_RESET_ENGINE + engine->id,
-			     &gt->reset.flags)) {
-		local_bh_enable();
-		intel_gt_set_wedged(gt);
-		err = -EBUSY;
+	err = engine_lock_reset_tasklet(engine);
+	if (err)
 		goto out_heartbeat;
-	}
-	tasklet_disable(&engine->execlists.tasklet);
 
 	engine->execlists.tasklet.callback(&engine->execlists.tasklet);
 	GEM_BUG_ON(execlists_active(&engine->execlists) != rq);
@@ -4612,9 +4623,7 @@ static int reset_virtual_engine(struct intel_gt *gt,
 	GEM_BUG_ON(rq->fence.error != -EIO);
 
 	/* Release our grasp on the engine, letting CS flow again */
-	tasklet_enable(&engine->execlists.tasklet);
-	clear_and_wake_up_bit(I915_RESET_ENGINE + engine->id, &gt->reset.flags);
-	local_bh_enable();
+	engine_unlock_reset_tasklet(engine);
 
 	/* Check that we do not resubmit the held request */
 	i915_request_get(rq);