From e30e251acc980d515fe3d3a8dfce37abeb79ed42 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Wed, 13 Apr 2016 21:19:58 +0300 Subject: [PATCH] drm/i915: Split gen8_gt_irq_handler into ack+handle MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit As we did on VLV, split the gt irq handling to ack and handler phases on CHV. Leave the BDW+ codepath mostly intact for now. Signed-off-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1460571598-24452-13-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Chris Wilson --- drivers/gpu/drm/i915/i915_irq.c | 79 ++++++++++++++++++++++++----------------- 1 file changed, 47 insertions(+), 32 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 7770248..93da4fe 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1324,60 +1324,45 @@ gen8_cs_irq_handler(struct intel_engine_cs *engine, u32 iir, int test_shift) tasklet_schedule(&engine->irq_tasklet); } -static irqreturn_t gen8_gt_irq_handler(struct drm_i915_private *dev_priv, - u32 master_ctl) +static irqreturn_t gen8_gt_irq_ack(struct drm_i915_private *dev_priv, + u32 master_ctl, + u32 gt_iir[4]) { irqreturn_t ret = IRQ_NONE; if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) { - u32 iir = I915_READ_FW(GEN8_GT_IIR(0)); - if (iir) { - I915_WRITE_FW(GEN8_GT_IIR(0), iir); + gt_iir[0] = I915_READ_FW(GEN8_GT_IIR(0)); + if (gt_iir[0]) { + I915_WRITE_FW(GEN8_GT_IIR(0), gt_iir[0]); ret = IRQ_HANDLED; - - gen8_cs_irq_handler(&dev_priv->engine[RCS], - iir, GEN8_RCS_IRQ_SHIFT); - - gen8_cs_irq_handler(&dev_priv->engine[BCS], - iir, GEN8_BCS_IRQ_SHIFT); } else DRM_ERROR("The master control interrupt lied (GT0)!\n"); } if (master_ctl & (GEN8_GT_VCS1_IRQ | GEN8_GT_VCS2_IRQ)) { - u32 iir = I915_READ_FW(GEN8_GT_IIR(1)); - if (iir) { - I915_WRITE_FW(GEN8_GT_IIR(1), iir); + gt_iir[1] = I915_READ_FW(GEN8_GT_IIR(1)); + if (gt_iir[1]) { + I915_WRITE_FW(GEN8_GT_IIR(1), gt_iir[1]); ret = IRQ_HANDLED; - - gen8_cs_irq_handler(&dev_priv->engine[VCS], - iir, GEN8_VCS1_IRQ_SHIFT); - - gen8_cs_irq_handler(&dev_priv->engine[VCS2], - iir, GEN8_VCS2_IRQ_SHIFT); } else DRM_ERROR("The master control interrupt lied (GT1)!\n"); } if (master_ctl & GEN8_GT_VECS_IRQ) { - u32 iir = I915_READ_FW(GEN8_GT_IIR(3)); - if (iir) { - I915_WRITE_FW(GEN8_GT_IIR(3), iir); + gt_iir[3] = I915_READ_FW(GEN8_GT_IIR(3)); + if (gt_iir[3]) { + I915_WRITE_FW(GEN8_GT_IIR(3), gt_iir[3]); ret = IRQ_HANDLED; - - gen8_cs_irq_handler(&dev_priv->engine[VECS], - iir, GEN8_VECS_IRQ_SHIFT); } else DRM_ERROR("The master control interrupt lied (GT3)!\n"); } if (master_ctl & GEN8_GT_PM_IRQ) { - u32 iir = I915_READ_FW(GEN8_GT_IIR(2)); - if (iir & dev_priv->pm_rps_events) { + gt_iir[2] = I915_READ_FW(GEN8_GT_IIR(2)); + if (gt_iir[2] & dev_priv->pm_rps_events) { I915_WRITE_FW(GEN8_GT_IIR(2), - iir & dev_priv->pm_rps_events); + gt_iir[2] & dev_priv->pm_rps_events); ret = IRQ_HANDLED; - gen6_rps_irq_handler(dev_priv, iir); } else DRM_ERROR("The master control interrupt lied (PM)!\n"); } @@ -1385,6 +1370,31 @@ static irqreturn_t gen8_gt_irq_handler(struct drm_i915_private *dev_priv, return ret; } +static void gen8_gt_irq_handler(struct drm_i915_private *dev_priv, + u32 gt_iir[4]) +{ + if (gt_iir[0]) { + gen8_cs_irq_handler(&dev_priv->engine[RCS], + gt_iir[0], GEN8_RCS_IRQ_SHIFT); + gen8_cs_irq_handler(&dev_priv->engine[BCS], + gt_iir[0], GEN8_BCS_IRQ_SHIFT); + } + + if (gt_iir[1]) { + gen8_cs_irq_handler(&dev_priv->engine[VCS], + gt_iir[1], GEN8_VCS1_IRQ_SHIFT); + gen8_cs_irq_handler(&dev_priv->engine[VCS2], + gt_iir[1], GEN8_VCS2_IRQ_SHIFT); + } + + if (gt_iir[3]) + gen8_cs_irq_handler(&dev_priv->engine[VECS], + gt_iir[3], GEN8_VECS_IRQ_SHIFT); + + if (gt_iir[2] & dev_priv->pm_rps_events) + gen6_rps_irq_handler(dev_priv, gt_iir[2]); +} + static bool bxt_port_hotplug_long_detect(enum port port, u32 val) { switch (port) { @@ -1864,6 +1874,7 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg) do { u32 master_ctl, iir; + u32 gt_iir[4] = {}; u32 pipe_stats[I915_MAX_PIPES] = {}; u32 hotplug_status = 0; u32 ier = 0; @@ -1893,7 +1904,7 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg) ier = I915_READ(VLV_IER); I915_WRITE(VLV_IER, 0); - gen8_gt_irq_handler(dev_priv, master_ctl); + gen8_gt_irq_ack(dev_priv, master_ctl, gt_iir); if (iir & I915_DISPLAY_PORT_INTERRUPT) hotplug_status = i9xx_hpd_irq_ack(dev_priv); @@ -1913,6 +1924,8 @@ static irqreturn_t cherryview_irq_handler(int irq, void *arg) I915_WRITE(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL); POSTING_READ(GEN8_MASTER_IRQ); + gen8_gt_irq_handler(dev_priv, gt_iir); + if (hotplug_status) i9xx_hpd_irq_handler(dev, hotplug_status); @@ -2479,6 +2492,7 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg) struct drm_device *dev = arg; struct drm_i915_private *dev_priv = dev->dev_private; u32 master_ctl; + u32 gt_iir[4] = {}; irqreturn_t ret; if (!intel_irqs_enabled(dev_priv)) @@ -2495,7 +2509,8 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg) disable_rpm_wakeref_asserts(dev_priv); /* Find, clear, then process each source of interrupt */ - ret = gen8_gt_irq_handler(dev_priv, master_ctl); + ret = gen8_gt_irq_ack(dev_priv, master_ctl, gt_iir); + gen8_gt_irq_handler(dev_priv, gt_iir); ret |= gen8_de_irq_handler(dev_priv, master_ctl); I915_WRITE_FW(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL); -- 2.7.4