diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index a228176676b2..54338cf72feb 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1119,6 +1119,56 @@ static void snb_gt_irq_handler(struct drm_device *dev, ivybridge_parity_error_irq_handler(dev, gt_iir); } +static irqreturn_t gen8_gt_irq_handler(struct drm_device *dev, + struct drm_i915_private *dev_priv, + u32 master_ctl) +{ + u32 rcs, bcs, vcs; + uint32_t tmp = 0; + irqreturn_t ret = IRQ_NONE; + + if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) { + tmp = I915_READ(GEN8_GT_IIR(0)); + if (tmp) { + ret = IRQ_HANDLED; + rcs = tmp >> GEN8_RCS_IRQ_SHIFT; + bcs = tmp >> GEN8_BCS_IRQ_SHIFT; + if (rcs & GT_RENDER_USER_INTERRUPT) + notify_ring(dev, &dev_priv->ring[RCS]); + if (bcs & GT_RENDER_USER_INTERRUPT) + notify_ring(dev, &dev_priv->ring[BCS]); + I915_WRITE(GEN8_GT_IIR(0), tmp); + } else + DRM_ERROR("The master control interrupt lied (GT0)!\n"); + } + + if (master_ctl & GEN8_GT_VCS1_IRQ) { + tmp = I915_READ(GEN8_GT_IIR(1)); + if (tmp) { + ret = IRQ_HANDLED; + vcs = tmp >> GEN8_VCS1_IRQ_SHIFT; + if (vcs & GT_RENDER_USER_INTERRUPT) + notify_ring(dev, &dev_priv->ring[VCS]); + I915_WRITE(GEN8_GT_IIR(1), tmp); + } else + DRM_ERROR("The master control interrupt lied (GT1)!\n"); + } + + if (master_ctl & GEN8_GT_VECS_IRQ) { + tmp = I915_READ(GEN8_GT_IIR(3)); + if (tmp) { + ret = IRQ_HANDLED; + vcs = tmp >> GEN8_VECS_IRQ_SHIFT; + if (vcs & GT_RENDER_USER_INTERRUPT) + notify_ring(dev, &dev_priv->ring[VECS]); + I915_WRITE(GEN8_GT_IIR(3), tmp); + } else + DRM_ERROR("The master control interrupt lied (GT3)!\n"); + } + + return ret; +} + #define HPD_STORM_DETECT_PERIOD 1000 #define HPD_STORM_THRESHOLD 5 @@ -1692,6 +1742,75 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg) return ret; } +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; + irqreturn_t ret = IRQ_NONE; + uint32_t tmp = 0; + + atomic_inc(&dev_priv->irq_received); + + master_ctl = I915_READ(GEN8_MASTER_IRQ); + master_ctl &= ~GEN8_MASTER_IRQ_CONTROL; + if (!master_ctl) + return IRQ_NONE; + + I915_WRITE(GEN8_MASTER_IRQ, 0); + POSTING_READ(GEN8_MASTER_IRQ); + + ret = gen8_gt_irq_handler(dev, dev_priv, master_ctl); + + if (master_ctl & GEN8_DE_MISC_IRQ) { + tmp = I915_READ(GEN8_DE_MISC_IIR); + if (tmp & GEN8_DE_MISC_GSE) + intel_opregion_asle_intr(dev); + else if (tmp) + DRM_ERROR("Unexpected DE Misc interrupt\n"); + else + DRM_ERROR("The master control interrupt lied (DE MISC)!\n"); + + if (tmp) { + I915_WRITE(GEN8_DE_MISC_IIR, tmp); + ret = IRQ_HANDLED; + } + } + + if (master_ctl & GEN8_DE_IRQS) { + int de_ret = 0; + int pipe; + for_each_pipe(pipe) { + uint32_t pipe_iir; + + pipe_iir = I915_READ(GEN8_DE_PIPE_IIR(pipe)); + if (pipe_iir & GEN8_PIPE_VBLANK) + drm_handle_vblank(dev, pipe); + + if (pipe_iir & GEN8_PIPE_FLIP_DONE) { + intel_prepare_page_flip(dev, pipe); + intel_finish_page_flip_plane(dev, pipe); + } + + if (pipe_iir & GEN8_DE_PIPE_IRQ_ERRORS) + DRM_ERROR("Errors on pipe %c\n", 'A' + pipe); + + if (pipe_iir) { + de_ret++; + ret = IRQ_HANDLED; + I915_WRITE(GEN8_DE_PIPE_IIR(pipe), pipe_iir); + } + } + if (!de_ret) + DRM_ERROR("The master control interrupt lied (DE PIPE)!\n"); + } + + I915_WRITE(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL); + POSTING_READ(GEN8_MASTER_IRQ); + + return ret; +} + static void i915_error_wake_up(struct drm_i915_private *dev_priv, bool reset_completed) { @@ -2045,6 +2164,25 @@ static int valleyview_enable_vblank(struct drm_device *dev, int pipe) return 0; } +static int gen8_enable_vblank(struct drm_device *dev, int pipe) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + unsigned long irqflags; + uint32_t imr; + + if (!i915_pipe_enabled(dev, pipe)) + return -EINVAL; + + spin_lock_irqsave(&dev_priv->irq_lock, irqflags); + imr = I915_READ(GEN8_DE_PIPE_IMR(pipe)); + if ((imr & GEN8_PIPE_VBLANK) == 1) { + I915_WRITE(GEN8_DE_PIPE_IMR(pipe), imr & ~GEN8_PIPE_VBLANK); + POSTING_READ(GEN8_DE_PIPE_IMR(pipe)); + } + spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); + return 0; +} + /* Called from drm generic code, passed 'crtc' which * we use as a pipe index */ @@ -2093,6 +2231,24 @@ static void valleyview_disable_vblank(struct drm_device *dev, int pipe) spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); } +static void gen8_disable_vblank(struct drm_device *dev, int pipe) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + unsigned long irqflags; + uint32_t imr; + + if (!i915_pipe_enabled(dev, pipe)) + return; + + spin_lock_irqsave(&dev_priv->irq_lock, irqflags); + imr = I915_READ(GEN8_DE_PIPE_IMR(pipe)); + if ((imr & GEN8_PIPE_VBLANK) == 0) { + I915_WRITE(GEN8_DE_PIPE_IMR(pipe), imr | GEN8_PIPE_VBLANK); + POSTING_READ(GEN8_DE_PIPE_IMR(pipe)); + } + spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); +} + static u32 ring_last_seqno(struct intel_ring_buffer *ring) { @@ -2427,6 +2583,53 @@ static void valleyview_irq_preinstall(struct drm_device *dev) POSTING_READ(VLV_IER); } +static void gen8_irq_preinstall(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + int pipe; + + atomic_set(&dev_priv->irq_received, 0); + + I915_WRITE(GEN8_MASTER_IRQ, 0); + POSTING_READ(GEN8_MASTER_IRQ); + + /* IIR can theoretically queue up two events. Be paranoid */ +#define GEN8_IRQ_INIT_NDX(type, which) do { \ + I915_WRITE(GEN8_##type##_IMR(which), 0xffffffff); \ + POSTING_READ(GEN8_##type##_IMR(which)); \ + I915_WRITE(GEN8_##type##_IER(which), 0); \ + I915_WRITE(GEN8_##type##_IIR(which), 0xffffffff); \ + POSTING_READ(GEN8_##type##_IIR(which)); \ + I915_WRITE(GEN8_##type##_IIR(which), 0xffffffff); \ + } while (0) + +#define GEN8_IRQ_INIT(type) do { \ + I915_WRITE(GEN8_##type##_IMR, 0xffffffff); \ + POSTING_READ(GEN8_##type##_IMR); \ + I915_WRITE(GEN8_##type##_IER, 0); \ + I915_WRITE(GEN8_##type##_IIR, 0xffffffff); \ + POSTING_READ(GEN8_##type##_IIR); \ + I915_WRITE(GEN8_##type##_IIR, 0xffffffff); \ + } while (0) + + GEN8_IRQ_INIT_NDX(GT, 0); + GEN8_IRQ_INIT_NDX(GT, 1); + GEN8_IRQ_INIT_NDX(GT, 2); + GEN8_IRQ_INIT_NDX(GT, 3); + + for_each_pipe(pipe) { + GEN8_IRQ_INIT_NDX(DE_PIPE, pipe); + } + + GEN8_IRQ_INIT(DE_PORT); + GEN8_IRQ_INIT(DE_MISC); + GEN8_IRQ_INIT(PCU); +#undef GEN8_IRQ_INIT +#undef GEN8_IRQ_INIT_NDX + + POSTING_READ(GEN8_PCU_IIR); +} + static void ibx_hpd_irq_setup(struct drm_device *dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; @@ -2632,6 +2835,116 @@ static int valleyview_irq_postinstall(struct drm_device *dev) return 0; } +static void gen8_gt_irq_postinstall(struct drm_i915_private *dev_priv) +{ + int i; + + /* These are interrupts we'll toggle with the ring mask register */ + uint32_t gt_interrupts[] = { + GT_RENDER_USER_INTERRUPT << GEN8_RCS_IRQ_SHIFT | + GT_RENDER_L3_PARITY_ERROR_INTERRUPT | + GT_RENDER_USER_INTERRUPT << GEN8_BCS_IRQ_SHIFT, + GT_RENDER_USER_INTERRUPT << GEN8_VCS1_IRQ_SHIFT | + GT_RENDER_USER_INTERRUPT << GEN8_VCS2_IRQ_SHIFT, + 0, + GT_RENDER_USER_INTERRUPT << GEN8_VECS_IRQ_SHIFT + }; + + for (i = 0; i < ARRAY_SIZE(gt_interrupts); i++) { + u32 tmp = I915_READ(GEN8_GT_IIR(i)); + if (tmp) + DRM_ERROR("Interrupt (%d) should have been masked in pre-install 0x%08x\n", + i, tmp); + I915_WRITE(GEN8_GT_IMR(i), ~gt_interrupts[i]); + I915_WRITE(GEN8_GT_IER(i), gt_interrupts[i]); + } + POSTING_READ(GEN8_GT_IER(0)); +} + +static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv) +{ + struct drm_device *dev = dev_priv->dev; + uint32_t de_pipe_enables = GEN8_PIPE_FLIP_DONE | + GEN8_PIPE_SCAN_LINE_EVENT | + GEN8_PIPE_VBLANK | + GEN8_DE_PIPE_IRQ_ERRORS; + int pipe; + dev_priv->de_irq_mask[PIPE_A] = ~de_pipe_enables; + dev_priv->de_irq_mask[PIPE_B] = ~de_pipe_enables; + dev_priv->de_irq_mask[PIPE_C] = ~de_pipe_enables; + + for_each_pipe(pipe) { + u32 tmp = I915_READ(GEN8_DE_PIPE_IIR(pipe)); + if (tmp) + DRM_ERROR("Interrupt (%d) should have been masked in pre-install 0x%08x\n", + pipe, tmp); + I915_WRITE(GEN8_DE_PIPE_IMR(pipe), dev_priv->de_irq_mask[pipe]); + I915_WRITE(GEN8_DE_PIPE_IER(pipe), de_pipe_enables); + } + POSTING_READ(GEN8_DE_PIPE_ISR(0)); + + I915_WRITE(GEN8_DE_PORT_IMR, ~_PORT_DP_A_HOTPLUG); + I915_WRITE(GEN8_DE_PORT_IER, _PORT_DP_A_HOTPLUG); + POSTING_READ(GEN8_DE_PORT_IER); +} + +static int gen8_irq_postinstall(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + gen8_gt_irq_postinstall(dev_priv); + gen8_de_irq_postinstall(dev_priv); + + ibx_irq_postinstall(dev); + + I915_WRITE(GEN8_MASTER_IRQ, DE_MASTER_IRQ_CONTROL); + POSTING_READ(GEN8_MASTER_IRQ); + + return 0; +} + +static void gen8_irq_uninstall(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + int pipe; + + if (!dev_priv) + return; + + atomic_set(&dev_priv->irq_received, 0); + + I915_WRITE(GEN8_MASTER_IRQ, 0); + +#define GEN8_IRQ_FINI_NDX(type, which) do { \ + I915_WRITE(GEN8_##type##_IMR(which), 0xffffffff); \ + I915_WRITE(GEN8_##type##_IER(which), 0); \ + I915_WRITE(GEN8_##type##_IIR(which), 0xffffffff); \ + } while (0) + +#define GEN8_IRQ_FINI(type) do { \ + I915_WRITE(GEN8_##type##_IMR, 0xffffffff); \ + I915_WRITE(GEN8_##type##_IER, 0); \ + I915_WRITE(GEN8_##type##_IIR, 0xffffffff); \ + } while (0) + + GEN8_IRQ_FINI_NDX(GT, 0); + GEN8_IRQ_FINI_NDX(GT, 1); + GEN8_IRQ_FINI_NDX(GT, 2); + GEN8_IRQ_FINI_NDX(GT, 3); + + for_each_pipe(pipe) { + GEN8_IRQ_FINI_NDX(DE_PIPE, pipe); + } + + GEN8_IRQ_FINI(DE_PORT); + GEN8_IRQ_FINI(DE_MISC); + GEN8_IRQ_FINI(PCU); +#undef GEN8_IRQ_FINI +#undef GEN8_IRQ_FINI_NDX + + POSTING_READ(GEN8_PCU_IIR); +} + static void valleyview_irq_uninstall(struct drm_device *dev) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; @@ -3411,6 +3724,14 @@ void intel_irq_init(struct drm_device *dev) dev->driver->enable_vblank = valleyview_enable_vblank; dev->driver->disable_vblank = valleyview_disable_vblank; dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; + } else if (IS_GEN8(dev)) { + dev->driver->irq_handler = gen8_irq_handler; + dev->driver->irq_preinstall = gen8_irq_preinstall; + dev->driver->irq_postinstall = gen8_irq_postinstall; + dev->driver->irq_uninstall = gen8_irq_uninstall; + dev->driver->enable_vblank = gen8_enable_vblank; + dev->driver->disable_vblank = gen8_disable_vblank; + dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup; } else if (HAS_PCH_SPLIT(dev)) { dev->driver->irq_handler = ironlake_irq_handler; dev->driver->irq_preinstall = ironlake_irq_preinstall; |