diff options
Diffstat (limited to 'shared-core')
| -rw-r--r-- | shared-core/i915_drv.h | 6 | ||||
| -rw-r--r-- | shared-core/i915_irq.c | 34 |
2 files changed, 38 insertions, 2 deletions
diff --git a/shared-core/i915_drv.h b/shared-core/i915_drv.h index 8bf82ed8..f8d08741 100644 --- a/shared-core/i915_drv.h +++ b/shared-core/i915_drv.h @@ -103,6 +103,10 @@ typedef struct drm_i915_private { struct mem_block *agp_heap; unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds; int vblank_pipe; + spinlock_t user_irq_lock; + int user_irq_refcount; + uint32_t irq_enable_reg; + int irq_enabled; #ifdef I915_HAVE_FENCE uint32_t flush_sequence; @@ -139,6 +143,8 @@ extern void i915_driver_irq_uninstall(drm_device_t * dev); extern int i915_vblank_pipe_set(DRM_IOCTL_ARGS); extern int i915_vblank_pipe_get(DRM_IOCTL_ARGS); extern int i915_emit_irq(drm_device_t * dev); +extern void i915_user_irq_on(drm_i915_private_t *dev_priv); +extern void i915_user_irq_off(drm_i915_private_t *dev_priv); /* i915_mem.c */ extern int i915_mem_alloc(DRM_IOCTL_ARGS); diff --git a/shared-core/i915_irq.c b/shared-core/i915_irq.c index 4195555e..a3f6a03b 100644 --- a/shared-core/i915_irq.c +++ b/shared-core/i915_irq.c @@ -102,6 +102,29 @@ int i915_emit_irq(drm_device_t * dev) } +void i915_user_irq_on(drm_i915_private_t *dev_priv) +{ + + spin_lock(&dev_priv->user_irq_lock); + if (dev_priv->irq_enabled && (++dev_priv->user_irq_refcount > 0)){ + dev_priv->irq_enable_reg |= USER_INT_FLAG; + I915_WRITE16(I915REG_INT_ENABLE_R, dev_priv->irq_enable_reg); + } + spin_unlock(&dev_priv->user_irq_lock); + +} + +void i915_user_irq_off(drm_i915_private_t *dev_priv) +{ + spin_lock(&dev_priv->user_irq_lock); + if (dev_priv->irq_enabled && (--dev_priv->user_irq_refcount == 0)) { + dev_priv->irq_enable_reg &= ~USER_INT_FLAG; + I915_WRITE16(I915REG_INT_ENABLE_R, dev_priv->irq_enable_reg); + } + spin_unlock(&dev_priv->user_irq_lock); +} + + static int i915_wait_irq(drm_device_t * dev, int irq_nr) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; @@ -114,9 +137,11 @@ static int i915_wait_irq(drm_device_t * dev, int irq_nr) return 0; dev_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; - + + i915_user_irq_on(dev_priv); DRM_WAIT_ON(ret, dev_priv->irq_queue, 3 * DRM_HZ, READ_BREADCRUMB(dev_priv) >= irq_nr); + i915_user_irq_off(dev_priv); if (ret == DRM_ERR(EBUSY)) { DRM_ERROR("%s: EBUSY -- rec: %d emitted: %d\n", @@ -211,7 +236,11 @@ static int i915_enable_interrupt (drm_device_t *dev) __FUNCTION__, dev_priv->vblank_pipe); return DRM_ERR(EINVAL); } - I915_WRITE16(I915REG_INT_ENABLE_R, USER_INT_FLAG | flag); + dev_priv->user_irq_lock = SPIN_LOCK_UNLOCKED; + dev_priv->user_irq_refcount = 0; + dev_priv->irq_enable_reg = flag; + I915_WRITE16(I915REG_INT_ENABLE_R, flag); + dev_priv->irq_enabled = 1; return 0; } @@ -290,6 +319,7 @@ void i915_driver_irq_uninstall(drm_device_t * dev) if (!dev_priv) return; + dev_priv->irq_enabled = 0; I915_WRITE16(I915REG_HWSTAM, 0xffff); I915_WRITE16(I915REG_INT_MASK_R, 0xffff); I915_WRITE16(I915REG_INT_ENABLE_R, 0x0); |