From f1af8fc10cdb75da7f07f765e9af86dec064f2a8 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Fri, 12 Jul 2013 19:56:30 -0300 Subject: [PATCH] drm/i915: add ILK/SNB support to ivybridge_irq_handler And then rename it to ironlake_irq_handler. Also move ilk_gt_irq_handler up to avoid forward declarations. In the previous patches I did small modifications to both ironlake_irq_handler an ivybridge_irq_handler so they became very similar functions. Now it should be very easy to verify that all we need to add ILK/SNB support is to call ilk_gt_irq_handler, call ilk_display_irq_handler and avoid reading pm_iir on gen 5. v2: - Rebase due to changes on the previous patches - Move pm_iir to a tighter scope (Chris) - Change some Gen checks for readability Signed-off-by: Paulo Zanoni Reviewed-by: Mika Kuoppala Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_irq.c | 115 +++++++++++----------------------------- 1 file changed, 32 insertions(+), 83 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 597a3d5..7c201f7 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -844,6 +844,17 @@ static void ivybridge_parity_error_irq_handler(struct drm_device *dev) queue_work(dev_priv->wq, &dev_priv->l3_parity.error_work); } +static void ilk_gt_irq_handler(struct drm_device *dev, + struct drm_i915_private *dev_priv, + u32 gt_iir) +{ + if (gt_iir & + (GT_RENDER_USER_INTERRUPT | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT)) + notify_ring(dev, &dev_priv->ring[RCS]); + if (gt_iir & ILK_BSD_USER_INTERRUPT) + notify_ring(dev, &dev_priv->ring[VCS]); +} + static void snb_gt_irq_handler(struct drm_device *dev, struct drm_i915_private *dev_priv, u32 gt_iir) @@ -1285,11 +1296,11 @@ static void ivb_display_irq_handler(struct drm_device *dev, u32 de_iir) } } -static irqreturn_t ivybridge_irq_handler(int irq, void *arg) +static irqreturn_t ironlake_irq_handler(int irq, void *arg) { struct drm_device *dev = (struct drm_device *) arg; drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - u32 de_iir, gt_iir, de_ier, pm_iir, sde_ier = 0; + u32 de_iir, gt_iir, de_ier, sde_ier = 0; irqreturn_t ret = IRQ_NONE; atomic_inc(&dev_priv->irq_received); @@ -1329,27 +1340,34 @@ static irqreturn_t ivybridge_irq_handler(int irq, void *arg) gt_iir = I915_READ(GTIIR); if (gt_iir) { - snb_gt_irq_handler(dev, dev_priv, gt_iir); + if (IS_GEN5(dev)) + ilk_gt_irq_handler(dev, dev_priv, gt_iir); + else + snb_gt_irq_handler(dev, dev_priv, gt_iir); I915_WRITE(GTIIR, gt_iir); ret = IRQ_HANDLED; } de_iir = I915_READ(DEIIR); if (de_iir) { - ivb_display_irq_handler(dev, de_iir); - + if (INTEL_INFO(dev)->gen >= 7) + ivb_display_irq_handler(dev, de_iir); + else + ilk_display_irq_handler(dev, de_iir); I915_WRITE(DEIIR, de_iir); ret = IRQ_HANDLED; } - pm_iir = I915_READ(GEN6_PMIIR); - if (pm_iir) { - if (IS_HASWELL(dev)) - hsw_pm_irq_handler(dev_priv, pm_iir); - else if (pm_iir & GEN6_PM_RPS_EVENTS) - gen6_rps_irq_handler(dev_priv, pm_iir); - I915_WRITE(GEN6_PMIIR, pm_iir); - ret = IRQ_HANDLED; + if (INTEL_INFO(dev)->gen >= 6) { + u32 pm_iir = I915_READ(GEN6_PMIIR); + if (pm_iir) { + if (IS_HASWELL(dev)) + hsw_pm_irq_handler(dev_priv, pm_iir); + else if (pm_iir & GEN6_PM_RPS_EVENTS) + gen6_rps_irq_handler(dev_priv, pm_iir); + I915_WRITE(GEN6_PMIIR, pm_iir); + ret = IRQ_HANDLED; + } } if (IS_HASWELL(dev)) { @@ -1369,75 +1387,6 @@ static irqreturn_t ivybridge_irq_handler(int irq, void *arg) return ret; } -static void ilk_gt_irq_handler(struct drm_device *dev, - struct drm_i915_private *dev_priv, - u32 gt_iir) -{ - if (gt_iir & - (GT_RENDER_USER_INTERRUPT | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT)) - notify_ring(dev, &dev_priv->ring[RCS]); - if (gt_iir & ILK_BSD_USER_INTERRUPT) - notify_ring(dev, &dev_priv->ring[VCS]); -} - -static irqreturn_t ironlake_irq_handler(int irq, void *arg) -{ - struct drm_device *dev = (struct drm_device *) arg; - drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - int ret = IRQ_NONE; - u32 de_iir, gt_iir, de_ier, sde_ier; - - atomic_inc(&dev_priv->irq_received); - - /* disable master interrupt before clearing iir */ - de_ier = I915_READ(DEIER); - I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); - POSTING_READ(DEIER); - - /* Disable south interrupts. We'll only write to SDEIIR once, so further - * interrupts will will be stored on its back queue, and then we'll be - * able to process them after we restore SDEIER (as soon as we restore - * it, we'll get an interrupt if SDEIIR still has something to process - * due to its back queue). */ - sde_ier = I915_READ(SDEIER); - I915_WRITE(SDEIER, 0); - POSTING_READ(SDEIER); - - gt_iir = I915_READ(GTIIR); - if (gt_iir) { - if (IS_GEN5(dev)) - ilk_gt_irq_handler(dev, dev_priv, gt_iir); - else - snb_gt_irq_handler(dev, dev_priv, gt_iir); - I915_WRITE(GTIIR, gt_iir); - ret = IRQ_HANDLED; - } - - de_iir = I915_READ(DEIIR); - if (de_iir) { - ilk_display_irq_handler(dev, de_iir); - I915_WRITE(DEIIR, de_iir); - ret = IRQ_HANDLED; - } - - if (IS_GEN6(dev)) { - u32 pm_iir = I915_READ(GEN6_PMIIR); - if (pm_iir) { - if (pm_iir & GEN6_PM_RPS_EVENTS) - gen6_rps_irq_handler(dev_priv, pm_iir); - I915_WRITE(GEN6_PMIIR, pm_iir); - ret = IRQ_HANDLED; - } - } - - I915_WRITE(DEIER, de_ier); - POSTING_READ(DEIER); - I915_WRITE(SDEIER, sde_ier); - POSTING_READ(SDEIER); - - return ret; -} - /** * i915_error_work_func - do process context error handling work * @work: work struct @@ -3118,7 +3067,7 @@ void intel_irq_init(struct drm_device *dev) dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) { /* Share uninstall handlers with ILK/SNB */ - dev->driver->irq_handler = ivybridge_irq_handler; + dev->driver->irq_handler = ironlake_irq_handler; dev->driver->irq_preinstall = ironlake_irq_preinstall; dev->driver->irq_postinstall = ivybridge_irq_postinstall; dev->driver->irq_uninstall = ironlake_irq_uninstall; -- 2.7.4