drm/i915: Tidy gen8 IRQ handler

Remove some needless variables and parameter passing.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 49 insertions, 64 deletions

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index c2c80bf490c6..46bcbff89760 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -985,8 +985,7 @@ static void ironlake_rps_change_irq_handler(struct drm_device *dev)
 	return;
 }
 
-static void notify_ring(struct drm_device *dev,
-			struct intel_engine_cs *ring)
+static void notify_ring(struct intel_engine_cs *ring)
 {
 	if (!intel_ring_initialized(ring))
 		return;
@@ -1248,9 +1247,9 @@ static void ilk_gt_irq_handler(struct drm_device *dev,
 {
 	if (gt_iir &
 	    (GT_RENDER_USER_INTERRUPT | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT))
-		notify_ring(dev, &dev_priv->ring[RCS]);
+		notify_ring(&dev_priv->ring[RCS]);
 	if (gt_iir & ILK_BSD_USER_INTERRUPT)
-		notify_ring(dev, &dev_priv->ring[VCS]);
+		notify_ring(&dev_priv->ring[VCS]);
 }
 
 static void snb_gt_irq_handler(struct drm_device *dev,
@@ -1260,11 +1259,11 @@ static void snb_gt_irq_handler(struct drm_device *dev,
 
 	if (gt_iir &
 	    (GT_RENDER_USER_INTERRUPT | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT))
-		notify_ring(dev, &dev_priv->ring[RCS]);
+		notify_ring(&dev_priv->ring[RCS]);
 	if (gt_iir & GT_BSD_USER_INTERRUPT)
-		notify_ring(dev, &dev_priv->ring[VCS]);
+		notify_ring(&dev_priv->ring[VCS]);
 	if (gt_iir & GT_BLT_USER_INTERRUPT)
-		notify_ring(dev, &dev_priv->ring[BCS]);
+		notify_ring(&dev_priv->ring[BCS]);
 
 	if (gt_iir & (GT_BLT_CS_ERROR_INTERRUPT |
 		      GT_BSD_CS_ERROR_INTERRUPT |
@@ -1275,63 +1274,65 @@ static void snb_gt_irq_handler(struct drm_device *dev,
 		ivybridge_parity_error_irq_handler(dev, gt_iir);
 }
 
-static irqreturn_t gen8_gt_irq_handler(struct drm_device *dev,
-				       struct drm_i915_private *dev_priv,
+static irqreturn_t gen8_gt_irq_handler(struct drm_i915_private *dev_priv,
 				       u32 master_ctl)
 {
-	struct intel_engine_cs *ring;
-	u32 rcs, bcs, vcs;
-	uint32_t tmp = 0;
 	irqreturn_t ret = IRQ_NONE;
 
 	if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) {
-		tmp = I915_READ_FW(GEN8_GT_IIR(0));
+		u32 tmp = I915_READ_FW(GEN8_GT_IIR(0));
 		if (tmp) {
 			I915_WRITE_FW(GEN8_GT_IIR(0), tmp);
 			ret = IRQ_HANDLED;
 
-			rcs = tmp >> GEN8_RCS_IRQ_SHIFT;
-			ring = &dev_priv->ring[RCS];
-			if (rcs & GT_CONTEXT_SWITCH_INTERRUPT)
-				intel_lrc_irq_handler(ring);
-			if (rcs & GT_RENDER_USER_INTERRUPT)
-				notify_ring(dev, ring);
-
-			bcs = tmp >> GEN8_BCS_IRQ_SHIFT;
-			ring = &dev_priv->ring[BCS];
-			if (bcs & GT_CONTEXT_SWITCH_INTERRUPT)
-				intel_lrc_irq_handler(ring);
-			if (bcs & GT_RENDER_USER_INTERRUPT)
-				notify_ring(dev, ring);
+			if (tmp & (GT_CONTEXT_SWITCH_INTERRUPT << GEN8_RCS_IRQ_SHIFT))
+				intel_lrc_irq_handler(&dev_priv->ring[RCS]);
+			if (tmp & (GT_RENDER_USER_INTERRUPT << GEN8_RCS_IRQ_SHIFT))
+				notify_ring(&dev_priv->ring[RCS]);
+
+			if (tmp & (GT_CONTEXT_SWITCH_INTERRUPT << GEN8_BCS_IRQ_SHIFT))
+				intel_lrc_irq_handler(&dev_priv->ring[BCS]);
+			if (tmp & (GT_RENDER_USER_INTERRUPT << GEN8_BCS_IRQ_SHIFT))
+				notify_ring(&dev_priv->ring[BCS]);
 		} else
 			DRM_ERROR("The master control interrupt lied (GT0)!\n");
 	}
 
 	if (master_ctl & (GEN8_GT_VCS1_IRQ | GEN8_GT_VCS2_IRQ)) {
-		tmp = I915_READ_FW(GEN8_GT_IIR(1));
+		u32 tmp = I915_READ_FW(GEN8_GT_IIR(1));
 		if (tmp) {
 			I915_WRITE_FW(GEN8_GT_IIR(1), tmp);
 			ret = IRQ_HANDLED;
 
-			vcs = tmp >> GEN8_VCS1_IRQ_SHIFT;
-			ring = &dev_priv->ring[VCS];
-			if (vcs & GT_CONTEXT_SWITCH_INTERRUPT)
-				intel_lrc_irq_handler(ring);
-			if (vcs & GT_RENDER_USER_INTERRUPT)
-				notify_ring(dev, ring);
-
-			vcs = tmp >> GEN8_VCS2_IRQ_SHIFT;
-			ring = &dev_priv->ring[VCS2];
-			if (vcs & GT_CONTEXT_SWITCH_INTERRUPT)
-				intel_lrc_irq_handler(ring);
-			if (vcs & GT_RENDER_USER_INTERRUPT)
-				notify_ring(dev, ring);
+			if (tmp & (GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VCS1_IRQ_SHIFT))
+				intel_lrc_irq_handler(&dev_priv->ring[VCS]);
+			if (tmp & (GT_RENDER_USER_INTERRUPT << GEN8_VCS1_IRQ_SHIFT))
+				notify_ring(&dev_priv->ring[VCS]);
+
+			if (tmp & (GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VCS2_IRQ_SHIFT))
+				intel_lrc_irq_handler(&dev_priv->ring[VCS2]);
+			if (tmp & (GT_RENDER_USER_INTERRUPT << GEN8_VCS2_IRQ_SHIFT))
+				notify_ring(&dev_priv->ring[VCS2]);
 		} else
 			DRM_ERROR("The master control interrupt lied (GT1)!\n");
 	}
 
+	if (master_ctl & GEN8_GT_VECS_IRQ) {
+		u32 tmp = I915_READ_FW(GEN8_GT_IIR(3));
+		if (tmp) {
+			I915_WRITE_FW(GEN8_GT_IIR(3), tmp);
+			ret = IRQ_HANDLED;
+
+			if (tmp & (GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VECS_IRQ_SHIFT))
+				intel_lrc_irq_handler(&dev_priv->ring[VECS]);
+			if (tmp & (GT_RENDER_USER_INTERRUPT << GEN8_VECS_IRQ_SHIFT))
+				notify_ring(&dev_priv->ring[VECS]);
+		} else
+			DRM_ERROR("The master control interrupt lied (GT3)!\n");
+	}
+
 	if (master_ctl & GEN8_GT_PM_IRQ) {
-		tmp = I915_READ_FW(GEN8_GT_IIR(2));
+		u32 tmp = I915_READ_FW(GEN8_GT_IIR(2));
 		if (tmp & dev_priv->pm_rps_events) {
 			I915_WRITE_FW(GEN8_GT_IIR(2),
 				      tmp & dev_priv->pm_rps_events);
@@ -1341,22 +1342,6 @@ static irqreturn_t gen8_gt_irq_handler(struct drm_device *dev,
 			DRM_ERROR("The master control interrupt lied (PM)!\n");
 	}
 
-	if (master_ctl & GEN8_GT_VECS_IRQ) {
-		tmp = I915_READ_FW(GEN8_GT_IIR(3));
-		if (tmp) {
-			I915_WRITE_FW(GEN8_GT_IIR(3), tmp);
-			ret = IRQ_HANDLED;
-
-			vcs = tmp >> GEN8_VECS_IRQ_SHIFT;
-			ring = &dev_priv->ring[VECS];
-			if (vcs & GT_CONTEXT_SWITCH_INTERRUPT)
-				intel_lrc_irq_handler(ring);
-			if (vcs & GT_RENDER_USER_INTERRUPT)
-				notify_ring(dev, ring);
-		} else
-			DRM_ERROR("The master control interrupt lied (GT3)!\n");
-	}
-
 	return ret;
 }
 
@@ -1651,7 +1636,7 @@ static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir)
 
 	if (HAS_VEBOX(dev_priv->dev)) {
 		if (pm_iir & PM_VEBOX_USER_INTERRUPT)
-			notify_ring(dev_priv->dev, &dev_priv->ring[VECS]);
+			notify_ring(&dev_priv->ring[VECS]);
 
 		if (pm_iir & PM_VEBOX_CS_ERROR_INTERRUPT)
 			DRM_DEBUG("Command parser error, pm_iir 0x%08x\n", pm_iir);
@@ -1845,7 +1830,7 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg)
 			I915_WRITE(VLV_IIR, iir);
 		}
 
-		gen8_gt_irq_handler(dev, dev_priv, master_ctl);
+		gen8_gt_irq_handler(dev_priv, master_ctl);
 
 		/* Call regardless, as some status bits might not be
 		 * signalled in iir */
@@ -2187,7 +2172,7 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg)
 
 	/* Find, clear, then process each source of interrupt */
 
-	ret = gen8_gt_irq_handler(dev, dev_priv, master_ctl);
+	ret = gen8_gt_irq_handler(dev_priv, master_ctl);
 
 	if (master_ctl & GEN8_DE_MISC_IRQ) {
 		tmp = I915_READ(GEN8_DE_MISC_IIR);
@@ -3692,7 +3677,7 @@ static irqreturn_t i8xx_irq_handler(int irq, void *arg)
 		new_iir = I915_READ16(IIR); /* Flush posted writes */
 
 		if (iir & I915_USER_INTERRUPT)
-			notify_ring(dev, &dev_priv->ring[RCS]);
+			notify_ring(&dev_priv->ring[RCS]);
 
 		for_each_pipe(dev_priv, pipe) {
 			int plane = pipe;
@@ -3883,7 +3868,7 @@ static irqreturn_t i915_irq_handler(int irq, void *arg)
 		new_iir = I915_READ(IIR); /* Flush posted writes */
 
 		if (iir & I915_USER_INTERRUPT)
-			notify_ring(dev, &dev_priv->ring[RCS]);
+			notify_ring(&dev_priv->ring[RCS]);
 
 		for_each_pipe(dev_priv, pipe) {
 			int plane = pipe;
@@ -4110,9 +4095,9 @@ static irqreturn_t i965_irq_handler(int irq, void *arg)
 		new_iir = I915_READ(IIR); /* Flush posted writes */
 
 		if (iir & I915_USER_INTERRUPT)
-			notify_ring(dev, &dev_priv->ring[RCS]);
+			notify_ring(&dev_priv->ring[RCS]);
 		if (iir & I915_BSD_USER_INTERRUPT)
-			notify_ring(dev, &dev_priv->ring[VCS]);
+			notify_ring(&dev_priv->ring[VCS]);
 
 		for_each_pipe(dev_priv, pipe) {
 			if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS &&