[PATCH 29/29] gtirr
Chris Wilson
chris at chris-wilson.co.uk
Wed May 16 10:49:37 UTC 2018
---
drivers/gpu/drm/i915/i915_irq.c | 87 ++++++++++++++-------------------
1 file changed, 37 insertions(+), 50 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 6ccb5c43fed1..b419ebb7e6c4 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1477,10 +1477,10 @@ gen8_cs_irq_handler(struct intel_engine_cs *engine, u32 iir)
}
}
-static void gen8_gt_irq_ack(struct drm_i915_private *i915,
- u32 master_ctl, u32 gt_iir[4])
+static void gen8_gt_irq_handler(struct drm_i915_private *i915, u32 master_ctl)
{
void __iomem * const regs = i915->regs;
+ u32 iir;
#define GEN8_GT_IRQS (GEN8_GT_RCS_IRQ | \
GEN8_GT_BCS_IRQ | \
@@ -1491,58 +1491,49 @@ static void gen8_gt_irq_ack(struct drm_i915_private *i915,
GEN8_GT_GUC_IRQ)
if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) {
- gt_iir[0] = raw_reg_read(regs, GEN8_GT_IIR(0));
- if (likely(gt_iir[0]))
- raw_reg_write(regs, GEN8_GT_IIR(0), gt_iir[0]);
+ iir = raw_reg_read(regs, GEN8_GT_IIR(0));
+ if (likely(iir)) {
+ raw_reg_write(regs, GEN8_GT_IIR(0), iir);
+
+ gen8_cs_irq_handler(i915->engine[RCS],
+ iir >> GEN8_RCS_IRQ_SHIFT);
+ gen8_cs_irq_handler(i915->engine[BCS],
+ iir >> GEN8_BCS_IRQ_SHIFT);
+ }
}
if (master_ctl & (GEN8_GT_VCS1_IRQ | GEN8_GT_VCS2_IRQ)) {
- gt_iir[1] = raw_reg_read(regs, GEN8_GT_IIR(1));
- if (likely(gt_iir[1]))
- raw_reg_write(regs, GEN8_GT_IIR(1), gt_iir[1]);
- }
-
- if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
- gt_iir[2] = raw_reg_read(regs, GEN8_GT_IIR(2));
- if (likely(gt_iir[2] & (i915->pm_rps_events |
- i915->pm_guc_events)))
- raw_reg_write(regs, GEN8_GT_IIR(2),
- gt_iir[2] & (i915->pm_rps_events |
- i915->pm_guc_events));
+ iir = raw_reg_read(regs, GEN8_GT_IIR(1));
+ if (likely(iir)) {
+ raw_reg_write(regs, GEN8_GT_IIR(1), iir);
+
+ gen8_cs_irq_handler(i915->engine[VCS],
+ iir >> GEN8_VCS1_IRQ_SHIFT);
+ gen8_cs_irq_handler(i915->engine[VCS2],
+ iir >> GEN8_VCS2_IRQ_SHIFT);
+ }
}
if (master_ctl & GEN8_GT_VECS_IRQ) {
- gt_iir[3] = raw_reg_read(regs, GEN8_GT_IIR(3));
- if (likely(gt_iir[3]))
- raw_reg_write(regs, GEN8_GT_IIR(3), gt_iir[3]);
- }
-}
+ iir = raw_reg_read(regs, GEN8_GT_IIR(3));
+ if (likely(iir)) {
+ raw_reg_write(regs, GEN8_GT_IIR(3), iir);
-static void gen8_gt_irq_handler(struct drm_i915_private *i915,
- u32 master_ctl, u32 gt_iir[4])
-{
- if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) {
- gen8_cs_irq_handler(i915->engine[RCS],
- gt_iir[0] >> GEN8_RCS_IRQ_SHIFT);
- gen8_cs_irq_handler(i915->engine[BCS],
- gt_iir[0] >> GEN8_BCS_IRQ_SHIFT);
- }
-
- if (master_ctl & (GEN8_GT_VCS1_IRQ | GEN8_GT_VCS2_IRQ)) {
- gen8_cs_irq_handler(i915->engine[VCS],
- gt_iir[1] >> GEN8_VCS1_IRQ_SHIFT);
- gen8_cs_irq_handler(i915->engine[VCS2],
- gt_iir[1] >> GEN8_VCS2_IRQ_SHIFT);
- }
-
- if (master_ctl & GEN8_GT_VECS_IRQ) {
- gen8_cs_irq_handler(i915->engine[VECS],
- gt_iir[3] >> GEN8_VECS_IRQ_SHIFT);
+ gen8_cs_irq_handler(i915->engine[VECS],
+ iir >> GEN8_VECS_IRQ_SHIFT);
+ }
}
if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
- gen6_rps_irq_handler(i915, gt_iir[2]);
- gen9_guc_irq_handler(i915, gt_iir[2]);
+ iir = raw_reg_read(regs, GEN8_GT_IIR(2));
+ if (likely(iir & (i915->pm_rps_events | i915->pm_guc_events))) {
+ raw_reg_write(regs, GEN8_GT_IIR(2),
+ iir & (i915->pm_rps_events |
+ i915->pm_guc_events));
+
+ gen6_rps_irq_handler(i915, iir);
+ gen9_guc_irq_handler(i915, iir);
+ }
}
}
@@ -2131,7 +2122,6 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg)
u32 master_ctl, iir;
u32 pipe_stats[I915_MAX_PIPES] = {};
u32 hotplug_status = 0;
- u32 gt_iir[4];
u32 ier = 0;
master_ctl = I915_READ(GEN8_MASTER_IRQ) & ~GEN8_MASTER_IRQ_CONTROL;
@@ -2159,8 +2149,7 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg)
ier = I915_READ(VLV_IER);
I915_WRITE(VLV_IER, 0);
- gen8_gt_irq_ack(dev_priv, master_ctl, gt_iir);
- gen8_gt_irq_handler(dev_priv, master_ctl, gt_iir);
+ gen8_gt_irq_handler(dev_priv, master_ctl);
if (iir & I915_DISPLAY_PORT_INTERRUPT)
hotplug_status = i9xx_hpd_irq_ack(dev_priv);
@@ -2741,7 +2730,6 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg)
{
struct drm_i915_private *dev_priv = to_i915(arg);
u32 master_ctl;
- u32 gt_iir[4];
if (!intel_irqs_enabled(dev_priv))
return IRQ_NONE;
@@ -2754,8 +2742,7 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg)
I915_WRITE_FW(GEN8_MASTER_IRQ, 0);
/* Find, clear, then process each source of interrupt */
- gen8_gt_irq_ack(dev_priv, master_ctl, gt_iir);
- gen8_gt_irq_handler(dev_priv, master_ctl, gt_iir);
+ gen8_gt_irq_handler(dev_priv, master_ctl);
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
if (master_ctl & ~GEN8_GT_IRQS) {
--
2.17.0
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