diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 117 |
1 files changed, 72 insertions, 45 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index c8ba94968aaf..e88d692583a5 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -215,9 +215,9 @@ void i915_hotplug_interrupt_update(struct drm_i915_private *dev_priv, * @interrupt_mask: mask of interrupt bits to update * @enabled_irq_mask: mask of interrupt bits to enable */ -static void ilk_update_display_irq(struct drm_i915_private *dev_priv, - uint32_t interrupt_mask, - uint32_t enabled_irq_mask) +void ilk_update_display_irq(struct drm_i915_private *dev_priv, + uint32_t interrupt_mask, + uint32_t enabled_irq_mask) { uint32_t new_val; @@ -239,18 +239,6 @@ static void ilk_update_display_irq(struct drm_i915_private *dev_priv, } } -void -ironlake_enable_display_irq(struct drm_i915_private *dev_priv, u32 mask) -{ - ilk_update_display_irq(dev_priv, mask, mask); -} - -void -ironlake_disable_display_irq(struct drm_i915_private *dev_priv, u32 mask) -{ - ilk_update_display_irq(dev_priv, mask, 0); -} - /** * ilk_update_gt_irq - update GTIMR * @dev_priv: driver private @@ -300,11 +288,11 @@ static i915_reg_t gen6_pm_ier(struct drm_i915_private *dev_priv) } /** - * snb_update_pm_irq - update GEN6_PMIMR - * @dev_priv: driver private - * @interrupt_mask: mask of interrupt bits to update - * @enabled_irq_mask: mask of interrupt bits to enable - */ + * snb_update_pm_irq - update GEN6_PMIMR + * @dev_priv: driver private + * @interrupt_mask: mask of interrupt bits to update + * @enabled_irq_mask: mask of interrupt bits to enable + */ static void snb_update_pm_irq(struct drm_i915_private *dev_priv, uint32_t interrupt_mask, uint32_t enabled_irq_mask) @@ -418,11 +406,11 @@ void gen6_disable_rps_interrupts(struct drm_device *dev) } /** - * bdw_update_port_irq - update DE port interrupt - * @dev_priv: driver private - * @interrupt_mask: mask of interrupt bits to update - * @enabled_irq_mask: mask of interrupt bits to enable - */ + * bdw_update_port_irq - update DE port interrupt + * @dev_priv: driver private + * @interrupt_mask: mask of interrupt bits to update + * @enabled_irq_mask: mask of interrupt bits to enable + */ static void bdw_update_port_irq(struct drm_i915_private *dev_priv, uint32_t interrupt_mask, uint32_t enabled_irq_mask) @@ -450,6 +438,38 @@ static void bdw_update_port_irq(struct drm_i915_private *dev_priv, } /** + * bdw_update_pipe_irq - update DE pipe interrupt + * @dev_priv: driver private + * @pipe: pipe whose interrupt to update + * @interrupt_mask: mask of interrupt bits to update + * @enabled_irq_mask: mask of interrupt bits to enable + */ +void bdw_update_pipe_irq(struct drm_i915_private *dev_priv, + enum pipe pipe, + uint32_t interrupt_mask, + uint32_t enabled_irq_mask) +{ + uint32_t new_val; + + assert_spin_locked(&dev_priv->irq_lock); + + WARN_ON(enabled_irq_mask & ~interrupt_mask); + + if (WARN_ON(!intel_irqs_enabled(dev_priv))) + return; + + new_val = dev_priv->de_irq_mask[pipe]; + new_val &= ~interrupt_mask; + new_val |= (~enabled_irq_mask & interrupt_mask); + + if (new_val != dev_priv->de_irq_mask[pipe]) { + dev_priv->de_irq_mask[pipe] = new_val; + I915_WRITE(GEN8_DE_PIPE_IMR(pipe), dev_priv->de_irq_mask[pipe]); + POSTING_READ(GEN8_DE_PIPE_IMR(pipe)); + } +} + +/** * ibx_display_interrupt_update - update SDEIMR * @dev_priv: driver private * @interrupt_mask: mask of interrupt bits to update @@ -1824,8 +1844,24 @@ static void ibx_hpd_irq_handler(struct drm_device *dev, u32 hotplug_trigger, struct drm_i915_private *dev_priv = to_i915(dev); u32 dig_hotplug_reg, pin_mask = 0, long_mask = 0; + /* + * Somehow the PCH doesn't seem to really ack the interrupt to the CPU + * unless we touch the hotplug register, even if hotplug_trigger is + * zero. Not acking leads to "The master control interrupt lied (SDE)!" + * errors. + */ dig_hotplug_reg = I915_READ(PCH_PORT_HOTPLUG); + if (!hotplug_trigger) { + u32 mask = PORTA_HOTPLUG_STATUS_MASK | + PORTD_HOTPLUG_STATUS_MASK | + PORTC_HOTPLUG_STATUS_MASK | + PORTB_HOTPLUG_STATUS_MASK; + dig_hotplug_reg &= ~mask; + } + I915_WRITE(PCH_PORT_HOTPLUG, dig_hotplug_reg); + if (!hotplug_trigger) + return; intel_get_hpd_pins(&pin_mask, &long_mask, hotplug_trigger, dig_hotplug_reg, hpd, @@ -1840,8 +1876,7 @@ static void ibx_irq_handler(struct drm_device *dev, u32 pch_iir) int pipe; u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK; - if (hotplug_trigger) - ibx_hpd_irq_handler(dev, hotplug_trigger, hpd_ibx); + ibx_hpd_irq_handler(dev, hotplug_trigger, hpd_ibx); if (pch_iir & SDE_AUDIO_POWER_MASK) { int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK) >> @@ -1934,8 +1969,7 @@ static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir) int pipe; u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT; - if (hotplug_trigger) - ibx_hpd_irq_handler(dev, hotplug_trigger, hpd_cpt); + ibx_hpd_irq_handler(dev, hotplug_trigger, hpd_cpt); if (pch_iir & SDE_AUDIO_POWER_MASK_CPT) { int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK_CPT) >> @@ -2351,13 +2385,9 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg) spt_irq_handler(dev, pch_iir); else cpt_irq_handler(dev, pch_iir); - } else { - /* - * Like on previous PCH there seems to be something - * fishy going on with forwarding PCH interrupts. - */ - DRM_DEBUG_DRIVER("The master control interrupt lied (SDE)!\n"); - } + } else + DRM_ERROR("The master control interrupt lied (SDE)!\n"); + } I915_WRITE_FW(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL); @@ -2645,7 +2675,7 @@ static int ironlake_enable_vblank(struct drm_device *dev, unsigned int pipe) DE_PIPE_VBLANK(pipe); spin_lock_irqsave(&dev_priv->irq_lock, irqflags); - ironlake_enable_display_irq(dev_priv, bit); + ilk_enable_display_irq(dev_priv, bit); spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); return 0; @@ -2670,10 +2700,9 @@ static int gen8_enable_vblank(struct drm_device *dev, unsigned int pipe) unsigned long irqflags; spin_lock_irqsave(&dev_priv->irq_lock, irqflags); - dev_priv->de_irq_mask[pipe] &= ~GEN8_PIPE_VBLANK; - I915_WRITE(GEN8_DE_PIPE_IMR(pipe), dev_priv->de_irq_mask[pipe]); - POSTING_READ(GEN8_DE_PIPE_IMR(pipe)); + bdw_enable_pipe_irq(dev_priv, pipe, GEN8_PIPE_VBLANK); spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); + return 0; } @@ -2700,7 +2729,7 @@ static void ironlake_disable_vblank(struct drm_device *dev, unsigned int pipe) DE_PIPE_VBLANK(pipe); spin_lock_irqsave(&dev_priv->irq_lock, irqflags); - ironlake_disable_display_irq(dev_priv, bit); + ilk_disable_display_irq(dev_priv, bit); spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); } @@ -2721,9 +2750,7 @@ static void gen8_disable_vblank(struct drm_device *dev, unsigned int pipe) unsigned long irqflags; spin_lock_irqsave(&dev_priv->irq_lock, irqflags); - dev_priv->de_irq_mask[pipe] |= GEN8_PIPE_VBLANK; - I915_WRITE(GEN8_DE_PIPE_IMR(pipe), dev_priv->de_irq_mask[pipe]); - POSTING_READ(GEN8_DE_PIPE_IMR(pipe)); + bdw_disable_pipe_irq(dev_priv, pipe, GEN8_PIPE_VBLANK); spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); } @@ -3452,7 +3479,7 @@ static int ironlake_irq_postinstall(struct drm_device *dev) * setup is guaranteed to run in single-threaded context. But we * need it to make the assert_spin_locked happy. */ spin_lock_irq(&dev_priv->irq_lock); - ironlake_enable_display_irq(dev_priv, DE_PCU_EVENT); + ilk_enable_display_irq(dev_priv, DE_PCU_EVENT); spin_unlock_irq(&dev_priv->irq_lock); } |