From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
All the older platforms already follow the ack+handler apporoach
for interrupts. Convert ilk+ as well. As the number of registers
involved is rather large we'll introduce a few more structs to
carry the register values around.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_irq.c | 445 +++++++++++++++++++++-----------
1 file changed, 295 insertions(+), 150 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 14e0e9fe1853..6a437c7170b9 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2276,6 +2276,13 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg)
return ret;
}
+struct ilk_de_irq_regs {
+ u32 iir;
+ u32 err_int; /* ivb/hsw */
+ u32 psr_iir; /* hsw */
+ struct hpd_irq_regs hpd;
+};
+
struct pch_irq_regs {
u32 iir;
u32 serr_int; /* cpt/lpt */
@@ -2382,9 +2389,17 @@ static void ibx_irq_handler(struct drm_i915_private *dev_priv,
intel_pch_fifo_underrun_irq_handler(dev_priv, PIPE_B);
}
-static void ivb_err_int_handler(struct drm_i915_private *dev_priv)
+static void ivb_err_int_ack(struct drm_i915_private *dev_priv,
+ struct ilk_de_irq_regs *de)
{
- u32 err_int = I915_READ(GEN7_ERR_INT);
+ de->err_int = I915_READ(GEN7_ERR_INT);
+ I915_WRITE(GEN7_ERR_INT, de->err_int);
+}
+
+static void ivb_err_int_handler(struct drm_i915_private *dev_priv,
+ const struct ilk_de_irq_regs *de)
+{
+ u32 err_int = de->err_int;
enum pipe pipe;
if (err_int & ERR_INT_POISON)
@@ -2401,8 +2416,6 @@ static void ivb_err_int_handler(struct drm_i915_private *dev_priv)
hsw_pipe_crc_irq_handler(dev_priv, pipe);
}
}
-
- I915_WRITE(GEN7_ERR_INT, err_int);
}
static void cpt_serr_int_ack(struct drm_i915_private *dev_priv,
@@ -2579,17 +2592,38 @@ static void ilk_hpd_irq_handler(struct drm_i915_private *dev_priv,
intel_hpd_irq_handler(dev_priv, pin_mask, long_mask);
}
+static void ilk_display_irq_ack(struct drm_i915_private *dev_priv,
+ struct ilk_de_irq_regs *de,
+ struct pch_irq_regs *pch)
+{
+ de->hpd.hotplug_trigger = de->iir & DE_DP_A_HOTPLUG;
+
+ if (de->hpd.hotplug_trigger)
+ ilk_hpd_irq_ack(dev_priv, &de->hpd);
+
+ /* check event from PCH */
+ if (de->iir & DE_PCH_EVENT) {
+ pch->iir = I915_READ(SDEIIR);
+
+ if (HAS_PCH_CPT(dev_priv))
+ cpt_irq_ack(dev_priv, pch);
+ else
+ ibx_irq_ack(dev_priv, pch);
+
+ /* should clear PCH hotplug event before clear CPU irq */
+ I915_WRITE(SDEIIR, pch->iir);
+ }
+}
+
static void ilk_display_irq_handler(struct drm_i915_private *dev_priv,
- u32 de_iir)
+ const struct ilk_de_irq_regs *de,
+ const struct pch_irq_regs *pch)
{
- struct hpd_irq_regs hpd = {};
+ u32 de_iir = de->iir;
enum pipe pipe;
- hpd.hotplug_trigger = de_iir & DE_DP_A_HOTPLUG;
- if (hpd.hotplug_trigger) {
- ilk_hpd_irq_ack(dev_priv, &hpd);
- ilk_hpd_irq_handler(dev_priv, &hpd, hpd_ilk);
- }
+ if (de->hpd.hotplug_trigger)
+ ilk_hpd_irq_handler(dev_priv, &de->hpd, hpd_ilk);
if (de_iir & DE_AUX_CHANNEL_A)
dp_aux_irq_handler(dev_priv);
@@ -2613,47 +2647,65 @@ static void ilk_display_irq_handler(struct drm_i915_private *dev_priv,
/* check event from PCH */
if (de_iir & DE_PCH_EVENT) {
- struct pch_irq_regs pch = {};
-
- pch.iir = I915_READ(SDEIIR);
-
- if (HAS_PCH_CPT(dev_priv)) {
- cpt_irq_ack(dev_priv, &pch);
- cpt_irq_handler(dev_priv, &pch);
- } else {
- ibx_irq_ack(dev_priv, &pch);
- ibx_irq_handler(dev_priv, &pch);
- }
-
- /* should clear PCH hotplug event before clear CPU irq */
- I915_WRITE(SDEIIR, pch.iir);
+ if (HAS_PCH_CPT(dev_priv))
+ cpt_irq_handler(dev_priv, pch);
+ else
+ ibx_irq_handler(dev_priv, pch);
}
if (IS_GEN(dev_priv, 5) && de_iir & DE_PCU_EVENT)
ironlake_rps_change_irq_handler(dev_priv);
}
+static void hsw_psr_irq_ack(struct drm_i915_private *dev_priv,
+ u32 *psr_iir)
+{
+ *psr_iir = I915_READ(EDP_PSR_IIR);
+ if (*psr_iir)
+ I915_WRITE(EDP_PSR_IIR, *psr_iir);
+}
+
+static void ivb_display_irq_ack(struct drm_i915_private *dev_priv,
+ struct ilk_de_irq_regs *de,
+ struct pch_irq_regs *pch)
+{
+ de->hpd.hotplug_trigger = de->iir & DE_DP_A_HOTPLUG_IVB;
+
+ if (de->hpd.hotplug_trigger)
+ ilk_hpd_irq_ack(dev_priv, &de->hpd);
+
+ if (de->iir & DE_ERR_INT_IVB)
+ ivb_err_int_ack(dev_priv, de);
+
+ if (de->iir & DE_EDP_PSR_INT_HSW)
+ hsw_psr_irq_ack(dev_priv, &de->psr_iir);
+
+ /* check event from PCH */
+ if (!HAS_PCH_NOP(dev_priv) && de->iir & DE_PCH_EVENT_IVB) {
+ pch->iir = I915_READ(SDEIIR);
+
+ cpt_irq_ack(dev_priv, pch);
+
+ /* clear PCH hotplug event before clear CPU irq */
+ I915_WRITE(SDEIIR, pch->iir);
+ }
+}
+
static void ivb_display_irq_handler(struct drm_i915_private *dev_priv,
- u32 de_iir)
+ const struct ilk_de_irq_regs *de,
+ const struct pch_irq_regs *pch)
{
- struct hpd_irq_regs hpd = {};
+ u32 de_iir = de->iir;
enum pipe pipe;
- hpd.hotplug_trigger = de_iir & DE_DP_A_HOTPLUG_IVB;
- if (hpd.hotplug_trigger) {
- ilk_hpd_irq_ack(dev_priv, &hpd);
- ilk_hpd_irq_handler(dev_priv, &hpd, hpd_ivb);
- }
+ if (de->hpd.hotplug_trigger)
+ ilk_hpd_irq_handler(dev_priv, &de->hpd, hpd_ivb);
if (de_iir & DE_ERR_INT_IVB)
- ivb_err_int_handler(dev_priv);
+ ivb_err_int_handler(dev_priv, de);
- if (de_iir & DE_EDP_PSR_INT_HSW) {
- u32 psr_iir = I915_READ(EDP_PSR_IIR);
-
- intel_psr_irq_handler(dev_priv, psr_iir);
- I915_WRITE(EDP_PSR_IIR, psr_iir);
- }
+ if (de_iir & DE_EDP_PSR_INT_HSW)
+ intel_psr_irq_handler(dev_priv, de->psr_iir);
if (de_iir & DE_AUX_CHANNEL_A_IVB)
dp_aux_irq_handler(dev_priv);
@@ -2662,22 +2714,13 @@ static void ivb_display_irq_handler(struct drm_i915_private *dev_priv,
intel_opregion_asle_intr(dev_priv);
for_each_pipe(dev_priv, pipe) {
- if (de_iir & (DE_PIPE_VBLANK_IVB(pipe)))
+ if (de_iir & DE_PIPE_VBLANK_IVB(pipe))
drm_handle_vblank(&dev_priv->drm, pipe);
}
/* check event from PCH */
- if (!HAS_PCH_NOP(dev_priv) && (de_iir & DE_PCH_EVENT_IVB)) {
- struct pch_irq_regs pch = {};
-
- pch.iir = I915_READ(SDEIIR);
-
- cpt_irq_ack(dev_priv, &pch);
- cpt_irq_handler(dev_priv, &pch);
-
- /* clear PCH hotplug event before clear CPU irq */
- I915_WRITE(SDEIIR, pch.iir);
- }
+ if (!HAS_PCH_NOP(dev_priv) && de_iir & DE_PCH_EVENT_IVB)
+ cpt_irq_handler(dev_priv, pch);
}
/*
@@ -2692,7 +2735,9 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg)
{
struct drm_device *dev = arg;
struct drm_i915_private *dev_priv = to_i915(dev);
- u32 de_iir, gt_iir, de_ier, sde_ier = 0;
+ u32 gt_iir, pm_iir = 0, de_ier, sde_ier = 0;
+ struct ilk_de_irq_regs de = {};
+ struct pch_irq_regs pch = {};
irqreturn_t ret = IRQ_NONE;
if (!intel_irqs_enabled(dev_priv))
@@ -2718,38 +2763,50 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg)
/* Find, clear, then process each source of interrupt */
gt_iir = I915_READ(GTIIR);
- if (gt_iir) {
+ de.iir = I915_READ(DEIIR);
+ if (INTEL_GEN(dev_priv) >= 6)
+ pm_iir = I915_READ(GEN6_PMIIR);
+
+ if (gt_iir)
I915_WRITE(GTIIR, gt_iir);
- ret = IRQ_HANDLED;
- if (INTEL_GEN(dev_priv) >= 6)
- snb_gt_irq_handler(dev_priv, gt_iir);
- else
- ilk_gt_irq_handler(dev_priv, gt_iir);
- }
- de_iir = I915_READ(DEIIR);
- if (de_iir) {
- I915_WRITE(DEIIR, de_iir);
- ret = IRQ_HANDLED;
+ if (de.iir) {
if (INTEL_GEN(dev_priv) >= 7)
- ivb_display_irq_handler(dev_priv, de_iir);
+ ivb_display_irq_ack(dev_priv, &de, &pch);
else
- ilk_display_irq_handler(dev_priv, de_iir);
- }
+ ilk_display_irq_ack(dev_priv, &de, &pch);
- if (INTEL_GEN(dev_priv) >= 6) {
- u32 pm_iir = I915_READ(GEN6_PMIIR);
- if (pm_iir) {
- I915_WRITE(GEN6_PMIIR, pm_iir);
- ret = IRQ_HANDLED;
- gen6_rps_irq_handler(dev_priv, pm_iir);
- }
+ I915_WRITE(DEIIR, de.iir);
}
+ if (pm_iir)
+ I915_WRITE(GEN6_PMIIR, pm_iir);
+
I915_WRITE(DEIER, de_ier);
if (!HAS_PCH_NOP(dev_priv))
I915_WRITE(SDEIER, sde_ier);
+ if (gt_iir) {
+ ret = IRQ_HANDLED;
+ if (INTEL_GEN(dev_priv) >= 6)
+ snb_gt_irq_handler(dev_priv, gt_iir);
+ else
+ ilk_gt_irq_handler(dev_priv, gt_iir);
+ }
+
+ if (de.iir) {
+ ret = IRQ_HANDLED;
+ if (INTEL_GEN(dev_priv) >= 7)
+ ivb_display_irq_handler(dev_priv, &de, &pch);
+ else
+ ilk_display_irq_handler(dev_priv, &de, &pch);
+ }
+
+ if (pm_iir) {
+ ret = IRQ_HANDLED;
+ gen6_rps_irq_handler(dev_priv, pm_iir);
+ }
+
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
enable_rpm_wakeref_asserts(dev_priv);
@@ -2776,37 +2833,129 @@ static void bxt_hpd_irq_handler(struct drm_i915_private *dev_priv,
intel_hpd_irq_handler(dev_priv, pin_mask, long_mask);
}
-static void gen11_hpd_irq_handler(struct drm_i915_private *dev_priv, u32 iir)
+struct gen8_de_irq_regs {
+ u32 pipe_iir[I915_MAX_PIPES];
+ u32 port_iir;
+ u32 misc_iir;
+ u32 psr_iir;
+ u32 hpd_iir; /* icl+ */
+ struct hpd_irq_regs ddi;
+ struct hpd_irq_regs tc, tbt; /* icl+ */
+};
+
+static void gen11_hpd_irq_ack(struct drm_i915_private *dev_priv,
+ struct gen8_de_irq_regs *de)
+{
+ de->tc.hotplug_trigger = de->hpd_iir & GEN11_DE_TC_HOTPLUG_MASK;
+ de->tbt.hotplug_trigger = de->hpd_iir & GEN11_DE_TBT_HOTPLUG_MASK;
+
+ if (de->tc.hotplug_trigger) {
+ de->tc.dig_hotplug_reg = I915_READ(GEN11_TC_HOTPLUG_CTL);
+ I915_WRITE(GEN11_TC_HOTPLUG_CTL, de->tc.dig_hotplug_reg);
+ }
+
+ if (de->tbt.hotplug_trigger) {
+ de->tbt.dig_hotplug_reg = I915_READ(GEN11_TBT_HOTPLUG_CTL);
+ I915_WRITE(GEN11_TBT_HOTPLUG_CTL, de->tbt.dig_hotplug_reg);
+ }
+}
+
+static void gen11_hpd_irq_handler(struct drm_i915_private *dev_priv,
+ const struct gen8_de_irq_regs *de)
{
- struct hpd_irq_regs tc = {};
- struct hpd_irq_regs tbt = {};
u32 pin_mask = 0, long_mask = 0;
- tc.hotplug_trigger = iir & GEN11_DE_TC_HOTPLUG_MASK;
- tbt.hotplug_trigger = iir & GEN11_DE_TBT_HOTPLUG_MASK;
-
- if (tc.hotplug_trigger) {
- tc.dig_hotplug_reg = I915_READ(GEN11_TC_HOTPLUG_CTL);
- I915_WRITE(GEN11_TC_HOTPLUG_CTL, tc.dig_hotplug_reg);
-
+ if (de->tc.hotplug_trigger) {
intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask,
- &tc, hpd_gen11,
+ &de->tc, hpd_gen11,
gen11_port_hotplug_long_detect);
}
- if (tbt.hotplug_trigger) {
- tbt.dig_hotplug_reg = I915_READ(GEN11_TBT_HOTPLUG_CTL);
- I915_WRITE(GEN11_TBT_HOTPLUG_CTL, tbt.dig_hotplug_reg);
-
+ if (de->tbt.hotplug_trigger) {
intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask,
- &tbt, hpd_gen11,
+ &de->tbt, hpd_gen11,
gen11_port_hotplug_long_detect);
}
if (pin_mask)
intel_hpd_irq_handler(dev_priv, pin_mask, long_mask);
else
- DRM_ERROR("Unexpected DE HPD interrupt 0x%08x\n", iir);
+ DRM_ERROR("Unexpected DE HPD interrupt 0x%08x\n", de->hpd_iir);
+}
+
+static void
+gen8_de_irq_ack(struct drm_i915_private *dev_priv, u32 master_ctl,
+ struct gen8_de_irq_regs *de, struct pch_irq_regs *pch)
+{
+ enum pipe pipe;
+
+ if (master_ctl & GEN8_DE_MISC_IRQ) {
+ de->misc_iir = I915_READ(GEN8_DE_MISC_IIR);
+
+ if (de->misc_iir) {
+ if (de->misc_iir & GEN8_DE_EDP_PSR)
+ hsw_psr_irq_ack(dev_priv, &de->psr_iir);
+
+ I915_WRITE(GEN8_DE_MISC_IIR, de->misc_iir);
+ }
+ }
+
+ if (INTEL_GEN(dev_priv) >= 11 && master_ctl & GEN11_DE_HPD_IRQ) {
+ de->hpd_iir = I915_READ(GEN11_DE_HPD_IIR);
+
+ if (de->hpd_iir) {
+ gen11_hpd_irq_ack(dev_priv, de);
+
+ I915_WRITE(GEN11_DE_HPD_IIR, de->hpd_iir);
+ }
+ }
+
+ if (master_ctl & GEN8_DE_PORT_IRQ) {
+ de->port_iir = I915_READ(GEN8_DE_PORT_IIR);
+
+ if (de->port_iir) {
+ if (IS_GEN9_LP(dev_priv)) {
+ de->ddi.hotplug_trigger = de->port_iir & BXT_DE_PORT_HOTPLUG_MASK;
+ if (de->ddi.hotplug_trigger)
+ bxt_hpd_irq_ack(dev_priv, &de->ddi);
+ } else if (IS_BROADWELL(dev_priv)) {
+ de->ddi.hotplug_trigger = de->port_iir & GEN8_PORT_DP_A_HOTPLUG;
+ if (de->ddi.hotplug_trigger)
+ ilk_hpd_irq_ack(dev_priv, &de->ddi);
+ }
+
+ I915_WRITE(GEN8_DE_PORT_IIR, de->port_iir);
+ }
+ }
+
+ for_each_pipe(dev_priv, pipe) {
+ if (!(master_ctl & GEN8_DE_PIPE_IRQ(pipe)))
+ continue;
+
+ de->pipe_iir[pipe] = I915_READ(GEN8_DE_PIPE_IIR(pipe));
+ if (de->pipe_iir[pipe])
+ I915_WRITE(GEN8_DE_PIPE_IIR(pipe), de->pipe_iir[pipe]);
+ }
+
+ if (HAS_PCH_SPLIT(dev_priv) && !HAS_PCH_NOP(dev_priv) &&
+ master_ctl & GEN8_DE_PCH_IRQ) {
+ /*
+ * FIXME(BDW): Assume for now that the new interrupt handling
+ * scheme also closed the SDE interrupt handling race we've seen
+ * on older pch-split platforms. But this needs testing.
+ */
+ pch->iir = I915_READ(SDEIIR);
+ if (pch->iir) {
+ if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
+ icp_irq_ack(dev_priv, pch);
+ if (INTEL_PCH_TYPE(dev_priv) >= PCH_SPT)
+ spt_irq_ack(dev_priv, pch);
+ else
+ cpt_irq_ack(dev_priv, pch);
+
+ I915_WRITE(SDEIIR, pch->iir);
+ }
+ }
}
static u32 gen8_de_port_aux_mask(struct drm_i915_private *dev_priv)
@@ -2837,57 +2986,51 @@ static u32 gen8_de_pipe_fault_mask(struct drm_i915_private *dev_priv)
}
static irqreturn_t
-gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
+gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl,
+ const struct gen8_de_irq_regs *de,
+ const struct pch_irq_regs *pch)
{
irqreturn_t ret = IRQ_NONE;
- u32 iir;
enum pipe pipe;
if (master_ctl & GEN8_DE_MISC_IRQ) {
- iir = I915_READ(GEN8_DE_MISC_IIR);
+ u32 iir = de->misc_iir;
+
if (iir) {
bool found = false;
- I915_WRITE(GEN8_DE_MISC_IIR, iir);
- ret = IRQ_HANDLED;
-
if (iir & GEN8_DE_MISC_GSE) {
intel_opregion_asle_intr(dev_priv);
found = true;
}
if (iir & GEN8_DE_EDP_PSR) {
- u32 psr_iir = I915_READ(EDP_PSR_IIR);
-
- intel_psr_irq_handler(dev_priv, psr_iir);
- I915_WRITE(EDP_PSR_IIR, psr_iir);
+ intel_psr_irq_handler(dev_priv, de->psr_iir);
found = true;
}
if (!found)
DRM_ERROR("Unexpected DE Misc interrupt\n");
- }
- else
+ } else {
DRM_ERROR("The master control interrupt lied (DE MISC)!\n");
+ }
}
if (INTEL_GEN(dev_priv) >= 11 && (master_ctl & GEN11_DE_HPD_IRQ)) {
- iir = I915_READ(GEN11_DE_HPD_IIR);
- if (iir) {
- I915_WRITE(GEN11_DE_HPD_IIR, iir);
- ret = IRQ_HANDLED;
- gen11_hpd_irq_handler(dev_priv, iir);
- } else {
+ u32 iir = de->hpd_iir;
+
+ if (iir)
+ gen11_hpd_irq_handler(dev_priv, de);
+ else
DRM_ERROR("The master control interrupt lied, (DE HPD)!\n");
- }
}
if (master_ctl & GEN8_DE_PORT_IRQ) {
- iir = I915_READ(GEN8_DE_PORT_IIR);
+ u32 iir = de->port_iir;
+
if (iir) {
bool found = false;
- I915_WRITE(GEN8_DE_PORT_IIR, iir);
ret = IRQ_HANDLED;
if (iir & gen8_de_port_aux_mask(dev_priv)) {
@@ -2895,24 +3038,12 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
found = true;
}
- if (IS_GEN9_LP(dev_priv)) {
- struct hpd_irq_regs ddi = {};
-
- ddi.hotplug_trigger = iir & BXT_DE_PORT_HOTPLUG_MASK;
- if (ddi.hotplug_trigger) {
- bxt_hpd_irq_ack(dev_priv, &ddi);
- bxt_hpd_irq_handler(dev_priv, &ddi, hpd_bxt);
- found = true;
- }
- } else if (IS_BROADWELL(dev_priv)) {
- struct hpd_irq_regs ddi = {};
-
- ddi.hotplug_trigger = iir & GEN8_PORT_DP_A_HOTPLUG;
- if (ddi.hotplug_trigger) {
- ilk_hpd_irq_ack(dev_priv, &ddi);
- ilk_hpd_irq_handler(dev_priv, &ddi, hpd_bdw);
- found = true;
- }
+ if (IS_GEN9_LP(dev_priv) && de->ddi.hotplug_trigger) {
+ bxt_hpd_irq_handler(dev_priv, &de->ddi, hpd_bxt);
+ found = true;
+ } else if (IS_BROADWELL(dev_priv) && de->ddi.hotplug_trigger) {
+ ilk_hpd_irq_handler(dev_priv, &de->ddi, hpd_bdw);
+ found = true;
}
if (IS_GEN9_LP(dev_priv) && (iir & BXT_DE_PORT_GMBUS)) {
@@ -2922,25 +3053,24 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
if (!found)
DRM_ERROR("Unexpected DE Port interrupt\n");
- }
- else
+ } else {
DRM_ERROR("The master control interrupt lied (DE PORT)!\n");
+ }
}
for_each_pipe(dev_priv, pipe) {
+ u32 iir = de->pipe_iir[pipe];
u32 fault_errors;
if (!(master_ctl & GEN8_DE_PIPE_IRQ(pipe)))
continue;
- iir = I915_READ(GEN8_DE_PIPE_IIR(pipe));
if (!iir) {
DRM_ERROR("The master control interrupt lied (DE PIPE)!\n");
continue;
}
ret = IRQ_HANDLED;
- I915_WRITE(GEN8_DE_PIPE_IIR(pipe), iir);
if (iir & GEN8_PIPE_VBLANK)
drm_handle_vblank(&dev_priv->drm, pipe);
@@ -2960,28 +3090,22 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
if (HAS_PCH_SPLIT(dev_priv) && !HAS_PCH_NOP(dev_priv) &&
master_ctl & GEN8_DE_PCH_IRQ) {
- struct pch_irq_regs pch = {};
+ u32 iir = pch->iir;
/*
* FIXME(BDW): Assume for now that the new interrupt handling
* scheme also closed the SDE interrupt handling race we've seen
* on older pch-split platforms. But this needs testing.
*/
- pch.iir = I915_READ(SDEIIR);
- if (pch.iir) {
- I915_WRITE(SDEIIR, pch.iir);
+ if (iir) {
ret = IRQ_HANDLED;
- if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP) {
- icp_irq_ack(dev_priv, &pch);
- icp_irq_handler(dev_priv, &pch);
- } else if (INTEL_PCH_TYPE(dev_priv) >= PCH_SPT) {
- spt_irq_ack(dev_priv, &pch);
- spt_irq_handler(dev_priv, &pch);
- } else {
- cpt_irq_ack(dev_priv, &pch);
- cpt_irq_handler(dev_priv, &pch);
- }
+ if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
+ icp_irq_handler(dev_priv, pch);
+ else if (INTEL_PCH_TYPE(dev_priv) >= PCH_SPT)
+ spt_irq_handler(dev_priv, pch);
+ else
+ cpt_irq_handler(dev_priv, pch);
} else {
/*
* Like on previous PCH there seems to be something
@@ -3018,6 +3142,8 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg)
void __iomem * const regs = dev_priv->uncore.regs;
u32 master_ctl;
u32 gt_iir[4];
+ struct gen8_de_irq_regs de = {};
+ struct pch_irq_regs pch = {};
if (!intel_irqs_enabled(dev_priv))
return IRQ_NONE;
@@ -3034,7 +3160,7 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg)
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
if (master_ctl & ~GEN8_GT_IRQS) {
disable_rpm_wakeref_asserts(dev_priv);
- gen8_de_irq_handler(dev_priv, master_ctl);
+ gen8_de_irq_ack(dev_priv, master_ctl, &de, &pch);
enable_rpm_wakeref_asserts(dev_priv);
}
@@ -3042,6 +3168,12 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg)
gen8_gt_irq_handler(dev_priv, master_ctl, gt_iir);
+ if (master_ctl & ~GEN8_GT_IRQS) {
+ disable_rpm_wakeref_asserts(dev_priv);
+ gen8_de_irq_handler(dev_priv, master_ctl, &de, &pch);
+ enable_rpm_wakeref_asserts(dev_priv);
+ }
+
return IRQ_HANDLED;
}
@@ -3214,6 +3346,9 @@ static irqreturn_t gen11_irq_handler(int irq, void *arg)
void __iomem * const regs = i915->uncore.regs;
u32 master_ctl;
u32 gu_misc_iir;
+ u32 disp_ctl = 0;
+ struct gen8_de_irq_regs de = {};
+ struct pch_irq_regs pch = {};
if (!intel_irqs_enabled(i915))
return IRQ_NONE;
@@ -3229,14 +3364,14 @@ static irqreturn_t gen11_irq_handler(int irq, void *arg)
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
if (master_ctl & GEN11_DISPLAY_IRQ) {
- const u32 disp_ctl = raw_reg_read(regs, GEN11_DISPLAY_INT_CTL);
+ disp_ctl = raw_reg_read(regs, GEN11_DISPLAY_INT_CTL);
disable_rpm_wakeref_asserts(i915);
/*
* GEN11_DISPLAY_INT_CTL has same format as GEN8_MASTER_IRQ
* for the display related bits.
*/
- gen8_de_irq_handler(i915, disp_ctl);
+ gen8_de_irq_ack(i915, disp_ctl, &de, &pch);
enable_rpm_wakeref_asserts(i915);
}
@@ -3244,6 +3379,16 @@ static irqreturn_t gen11_irq_handler(int irq, void *arg)
gen11_master_intr_enable(regs);
+ if (master_ctl & GEN11_DISPLAY_IRQ) {
+ disable_rpm_wakeref_asserts(i915);
+ /*
+ * GEN11_DISPLAY_INT_CTL has same format as GEN8_MASTER_IRQ
+ * for the display related bits.
+ */
+ gen8_de_irq_handler(i915, disp_ctl, &de, &pch);
+ enable_rpm_wakeref_asserts(i915);
+ }
+
gen11_gu_misc_irq_handler(i915, gu_misc_iir);
return IRQ_HANDLED;
--
2.21.0
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