diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 190 |
1 files changed, 182 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 98bb4c878c4e..b86b7b7130c6 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -58,6 +58,47 @@ DRM_I915_VBLANK_PIPE_B) void +igdng_enable_graphics_irq(drm_i915_private_t *dev_priv, u32 mask) +{ + if ((dev_priv->gt_irq_mask_reg & mask) != 0) { + dev_priv->gt_irq_mask_reg &= ~mask; + I915_WRITE(GTIMR, dev_priv->gt_irq_mask_reg); + (void) I915_READ(GTIMR); + } +} + +static inline void +igdng_disable_graphics_irq(drm_i915_private_t *dev_priv, u32 mask) +{ + if ((dev_priv->gt_irq_mask_reg & mask) != mask) { + dev_priv->gt_irq_mask_reg |= mask; + I915_WRITE(GTIMR, dev_priv->gt_irq_mask_reg); + (void) I915_READ(GTIMR); + } +} + +/* For display hotplug interrupt */ +void +igdng_enable_display_irq(drm_i915_private_t *dev_priv, u32 mask) +{ + if ((dev_priv->irq_mask_reg & mask) != 0) { + dev_priv->irq_mask_reg &= ~mask; + I915_WRITE(DEIMR, dev_priv->irq_mask_reg); + (void) I915_READ(DEIMR); + } +} + +static inline void +igdng_disable_display_irq(drm_i915_private_t *dev_priv, u32 mask) +{ + if ((dev_priv->irq_mask_reg & mask) != mask) { + dev_priv->irq_mask_reg |= mask; + I915_WRITE(DEIMR, dev_priv->irq_mask_reg); + (void) I915_READ(DEIMR); + } +} + +void i915_enable_irq(drm_i915_private_t *dev_priv, u32 mask) { if ((dev_priv->irq_mask_reg & mask) != 0) { @@ -196,6 +237,47 @@ static void i915_hotplug_work_func(struct work_struct *work) drm_sysfs_hotplug_event(dev); } +irqreturn_t igdng_irq_handler(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + int ret = IRQ_NONE; + u32 de_iir, gt_iir; + u32 new_de_iir, new_gt_iir; + struct drm_i915_master_private *master_priv; + + de_iir = I915_READ(DEIIR); + gt_iir = I915_READ(GTIIR); + + for (;;) { + if (de_iir == 0 && gt_iir == 0) + break; + + ret = IRQ_HANDLED; + + I915_WRITE(DEIIR, de_iir); + new_de_iir = I915_READ(DEIIR); + I915_WRITE(GTIIR, gt_iir); + new_gt_iir = I915_READ(GTIIR); + + if (dev->primary->master) { + master_priv = dev->primary->master->driver_priv; + if (master_priv->sarea_priv) + master_priv->sarea_priv->last_dispatch = + READ_BREADCRUMB(dev_priv); + } + + if (gt_iir & GT_USER_INTERRUPT) { + dev_priv->mm.irq_gem_seqno = i915_get_gem_seqno(dev); + DRM_WAKEUP(&dev_priv->irq_queue); + } + + de_iir = new_de_iir; + gt_iir = new_gt_iir; + } + + return ret; +} + irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) { struct drm_device *dev = (struct drm_device *) arg; @@ -212,6 +294,9 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) atomic_inc(&dev_priv->irq_received); + if (IS_IGDNG(dev)) + return igdng_irq_handler(dev); + iir = I915_READ(IIR); if (IS_I965G(dev)) { @@ -349,8 +434,12 @@ void i915_user_irq_get(struct drm_device *dev) unsigned long irqflags; spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); - if (dev->irq_enabled && (++dev_priv->user_irq_refcount == 1)) - i915_enable_irq(dev_priv, I915_USER_INTERRUPT); + if (dev->irq_enabled && (++dev_priv->user_irq_refcount == 1)) { + if (IS_IGDNG(dev)) + igdng_enable_graphics_irq(dev_priv, GT_USER_INTERRUPT); + else + i915_enable_irq(dev_priv, I915_USER_INTERRUPT); + } spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags); } @@ -361,8 +450,12 @@ void i915_user_irq_put(struct drm_device *dev) spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); BUG_ON(dev->irq_enabled && dev_priv->user_irq_refcount <= 0); - if (dev->irq_enabled && (--dev_priv->user_irq_refcount == 0)) - i915_disable_irq(dev_priv, I915_USER_INTERRUPT); + if (dev->irq_enabled && (--dev_priv->user_irq_refcount == 0)) { + if (IS_IGDNG(dev)) + igdng_disable_graphics_irq(dev_priv, GT_USER_INTERRUPT); + else + i915_disable_irq(dev_priv, I915_USER_INTERRUPT); + } spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags); } @@ -455,6 +548,9 @@ int i915_enable_vblank(struct drm_device *dev, int pipe) if (!(pipeconf & PIPEACONF_ENABLE)) return -EINVAL; + if (IS_IGDNG(dev)) + return 0; + spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); if (IS_I965G(dev)) i915_enable_pipestat(dev_priv, pipe, @@ -474,6 +570,9 @@ void i915_disable_vblank(struct drm_device *dev, int pipe) drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; unsigned long irqflags; + if (IS_IGDNG(dev)) + return; + spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); i915_disable_pipestat(dev_priv, pipe, PIPE_VBLANK_INTERRUPT_ENABLE | @@ -484,7 +583,9 @@ void i915_disable_vblank(struct drm_device *dev, int pipe) void i915_enable_interrupt (struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - opregion_enable_asle(dev); + + if (!IS_IGDNG(dev)) + opregion_enable_asle(dev); dev_priv->irq_enabled = 1; } @@ -545,12 +646,65 @@ int i915_vblank_swap(struct drm_device *dev, void *data, /* drm_dma.h hooks */ +static void igdng_irq_preinstall(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + + I915_WRITE(HWSTAM, 0xeffe); + + /* XXX hotplug from PCH */ + + I915_WRITE(DEIMR, 0xffffffff); + I915_WRITE(DEIER, 0x0); + (void) I915_READ(DEIER); + + /* and GT */ + I915_WRITE(GTIMR, 0xffffffff); + I915_WRITE(GTIER, 0x0); + (void) I915_READ(GTIER); +} + +static int igdng_irq_postinstall(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + /* enable kind of interrupts always enabled */ + u32 display_mask = DE_MASTER_IRQ_CONTROL /*| DE_PCH_EVENT */; + u32 render_mask = GT_USER_INTERRUPT; + + dev_priv->irq_mask_reg = ~display_mask; + dev_priv->de_irq_enable_reg = display_mask; + + /* should always can generate irq */ + I915_WRITE(DEIIR, I915_READ(DEIIR)); + I915_WRITE(DEIMR, dev_priv->irq_mask_reg); + I915_WRITE(DEIER, dev_priv->de_irq_enable_reg); + (void) I915_READ(DEIER); + + /* user interrupt should be enabled, but masked initial */ + dev_priv->gt_irq_mask_reg = 0xffffffff; + dev_priv->gt_irq_enable_reg = render_mask; + + I915_WRITE(GTIIR, I915_READ(GTIIR)); + I915_WRITE(GTIMR, dev_priv->gt_irq_mask_reg); + I915_WRITE(GTIER, dev_priv->gt_irq_enable_reg); + (void) I915_READ(GTIER); + + return 0; +} + void i915_driver_irq_preinstall(struct drm_device * dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; atomic_set(&dev_priv->irq_received, 0); + INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); + + if (IS_IGDNG(dev)) { + igdng_irq_preinstall(dev); + return; + } + if (I915_HAS_HOTPLUG(dev)) { I915_WRITE(PORT_HOTPLUG_EN, 0); I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); @@ -562,7 +716,6 @@ void i915_driver_irq_preinstall(struct drm_device * dev) I915_WRITE(IMR, 0xffffffff); I915_WRITE(IER, 0x0); (void) I915_READ(IER); - INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); } int i915_driver_irq_postinstall(struct drm_device *dev) @@ -570,9 +723,12 @@ int i915_driver_irq_postinstall(struct drm_device *dev) drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; u32 enable_mask = I915_INTERRUPT_ENABLE_FIX | I915_INTERRUPT_ENABLE_VAR; + DRM_INIT_WAITQUEUE(&dev_priv->irq_queue); + dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B; - dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ + if (IS_IGDNG(dev)) + return igdng_irq_postinstall(dev); /* Unmask the interrupts that we always want on. */ dev_priv->irq_mask_reg = ~I915_INTERRUPT_ENABLE_FIX; @@ -613,11 +769,24 @@ int i915_driver_irq_postinstall(struct drm_device *dev) (void) I915_READ(IER); opregion_enable_asle(dev); - DRM_INIT_WAITQUEUE(&dev_priv->irq_queue); return 0; } +static void igdng_irq_uninstall(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + I915_WRITE(HWSTAM, 0xffffffff); + + I915_WRITE(DEIMR, 0xffffffff); + I915_WRITE(DEIER, 0x0); + I915_WRITE(DEIIR, I915_READ(DEIIR)); + + I915_WRITE(GTIMR, 0xffffffff); + I915_WRITE(GTIER, 0x0); + I915_WRITE(GTIIR, I915_READ(GTIIR)); +} + void i915_driver_irq_uninstall(struct drm_device * dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; @@ -627,6 +796,11 @@ void i915_driver_irq_uninstall(struct drm_device * dev) dev_priv->vblank_pipe = 0; + if (IS_IGDNG(dev)) { + igdng_irq_uninstall(dev); + return; + } + if (I915_HAS_HOTPLUG(dev)) { I915_WRITE(PORT_HOTPLUG_EN, 0); I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); |