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Diffstat (limited to 'shared-core/i915_irq.c')
-rw-r--r--shared-core/i915_irq.c143
1 files changed, 54 insertions, 89 deletions
diff --git a/shared-core/i915_irq.c b/shared-core/i915_irq.c
index 1019c942..0f4d1a81 100644
--- a/shared-core/i915_irq.c
+++ b/shared-core/i915_irq.c
@@ -117,12 +117,14 @@ static void i915_vblank_tasklet(drm_device_t *dev)
list_for_each_safe(list, tmp, &dev_priv->vbl_swaps.head) {
drm_i915_vbl_swap_t *vbl_swap =
list_entry(list, drm_i915_vbl_swap_t, head);
+ int crtc = vbl_swap->pipe;
if ((counter[vbl_swap->pipe] - vbl_swap->sequence) > (1<<23))
continue;
list_del(list);
dev_priv->swaps_pending--;
+ drm_vblank_put(dev, crtc);
spin_unlock(&dev_priv->swaps_lock);
spin_lock(&dev->drw_lock);
@@ -274,6 +276,32 @@ static void i915_vblank_tasklet(drm_device_t *dev)
}
}
+u32 i915_get_vblank_counter(drm_device_t *dev, int crtc)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ unsigned long high_frame = crtc ? PIPEBFRAMEHIGH : PIPEAFRAMEHIGH;
+ unsigned long low_frame = crtc ? PIPEBFRAMEPIXEL : PIPEAFRAMEPIXEL;
+ u32 high1, high2, low, count;
+
+ /*
+ * High & low register fields aren't synchronized, so make sure
+ * we get a low value that's stable across two reads of the high
+ * register.
+ */
+ do {
+ high1 = ((I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK) >>
+ PIPE_FRAME_HIGH_SHIFT);
+ low = ((I915_READ(low_frame) & PIPE_FRAME_LOW_MASK) >>
+ PIPE_FRAME_LOW_SHIFT);
+ high2 = ((I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK) >>
+ PIPE_FRAME_HIGH_SHIFT);
+ } while (high1 != high2);
+
+ count = (high1 << 8) | low;
+
+ return count;
+}
+
irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
{
drm_device_t *dev = (drm_device_t *) arg;
@@ -306,22 +334,14 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
#endif
}
- if (temp & (VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG)) {
- int vblank_pipe = dev_priv->vblank_pipe;
-
- if ((vblank_pipe &
- (DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B))
- == (DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B)) {
- if (temp & VSYNC_PIPEA_FLAG)
- atomic_inc(&dev->vblank_count[0]);
- if (temp & VSYNC_PIPEB_FLAG)
- atomic_inc(&dev->vblank_count[1]);
- } else if (((temp & VSYNC_PIPEA_FLAG) &&
- (vblank_pipe & DRM_I915_VBLANK_PIPE_A)) ||
- ((temp & VSYNC_PIPEB_FLAG) &&
- (vblank_pipe & DRM_I915_VBLANK_PIPE_B)))
- atomic_inc(&dev->vblank_count[0]);
+ if (temp & VSYNC_PIPEA_FLAG)
+ atomic_add(i915_get_vblank_counter(dev, 0),
+ &dev->vblank_count[0]);
+ if (temp & VSYNC_PIPEB_FLAG)
+ atomic_add(i915_get_vblank_counter(dev, 1),
+ &dev->vblank_count[1]);
+ if (temp & (VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG)) {
DRM_WAKEUP(&dev->vbl_queue);
drm_vbl_send_signals(dev);
@@ -461,6 +481,9 @@ int i915_irq_wait(DRM_IOCTL_ARGS)
void i915_enable_vblank(drm_device_t *dev, int crtc)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+
+ if (crtc > dev_priv->vblank_pipe)
+ return;
switch (crtc) {
case 0:
@@ -481,6 +504,9 @@ void i915_enable_vblank(drm_device_t *dev, int crtc)
void i915_disable_vblank(drm_device_t *dev, int crtc)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+
+ if (crtc > dev_priv->vblank_pipe)
+ return;
switch (crtc) {
case 0:
@@ -498,54 +524,6 @@ void i915_disable_vblank(drm_device_t *dev, int crtc)
I915_WRITE16(I915REG_INT_ENABLE_R, dev_priv->irq_enable_reg);
}
-static u32 i915_vblank_counter(drm_device_t *dev, int crtc)
-{
- drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- unsigned long high_frame = crtc ? PIPEBFRAMEHIGH : PIPEAFRAMEHIGH;
- unsigned long low_frame = crtc ? PIPEBFRAMEPIXEL : PIPEAFRAMEPIXEL;
- u32 high1, high2, low, count;
-
- /*
- * High & low register fields aren't synchronized, so make sure
- * we get a low value that's stable across two reads of the high
- * register.
- */
- do {
- high1 = ((I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK) >>
- PIPE_FRAME_HIGH_SHIFT);
- low = ((I915_READ(low_frame) & PIPE_FRAME_LOW_MASK) >>
- PIPE_FRAME_LOW_SHIFT);
- high2 = ((I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK) >>
- PIPE_FRAME_HIGH_SHIFT);
- } while (high1 != high2);
-
- count = (high1 << 8) | low;
-
- return count;
-}
-
-u32 i915_get_vblank_counter(drm_device_t *dev, int crtc)
-{
- drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- return i915_vblank_counter(dev, crtc) + dev_priv->vblank_offset[crtc];
-}
-
-void i915_premodeset(drm_device_t *dev, int crtc)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
-
- dev_priv->vblank_premodeset[crtc] = i915_vblank_counter(dev, crtc);
-}
-
-void i915_postmodeset(drm_device_t *dev, int crtc)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- u32 new;
-
- new = i915_vblank_counter(dev, crtc);
- dev_priv->vblank_offset[crtc] = dev_priv->vblank_premodeset[crtc] - new;
-}
-
static void i915_enable_interrupt (drm_device_t *dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
@@ -660,6 +638,7 @@ int i915_vblank_swap(DRM_IOCTL_ARGS)
spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ drm_vblank_get(dev, pipe);
curseq = atomic_read(&dev->vblank_count[pipe]);
if (seqtype == _DRM_VBLANK_RELATIVE)
@@ -670,6 +649,7 @@ int i915_vblank_swap(DRM_IOCTL_ARGS)
swap.sequence = curseq + 1;
} else {
DRM_DEBUG("Missed target sequence\n");
+ drm_vblank_put(dev, pipe);
return DRM_ERR(EINVAL);
}
}
@@ -690,6 +670,7 @@ int i915_vblank_swap(DRM_IOCTL_ARGS)
spin_unlock_irqrestore(&dev->drw_lock, irqflags);
DRM_DEBUG("Invalid drawable ID %d\n",
swap.drawable);
+ drm_vblank_put(dev, pipe);
return DRM_ERR(EINVAL);
}
@@ -697,6 +678,7 @@ int i915_vblank_swap(DRM_IOCTL_ARGS)
spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ drm_vblank_put(dev, pipe);
return 0;
}
}
@@ -712,6 +694,7 @@ int i915_vblank_swap(DRM_IOCTL_ARGS)
vbl_swap->flip = (swap.seqtype & _DRM_VBLANK_FLIP);
spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags);
DRM_DEBUG("Already scheduled\n");
+ drm_vblank_put(dev, pipe);
return 0;
}
}
@@ -720,6 +703,7 @@ int i915_vblank_swap(DRM_IOCTL_ARGS)
if (dev_priv->swaps_pending >= 100) {
DRM_DEBUG("Too many swaps queued\n");
+ drm_vblank_put(dev, pipe);
return DRM_ERR(EBUSY);
}
@@ -727,6 +711,7 @@ int i915_vblank_swap(DRM_IOCTL_ARGS)
if (!vbl_swap) {
DRM_ERROR("Failed to allocate memory to queue swap\n");
+ drm_vblank_put(dev, pipe);
return DRM_ERR(ENOMEM);
}
@@ -764,10 +749,10 @@ void i915_driver_irq_preinstall(drm_device_t * dev)
I915_WRITE16(I915REG_INT_ENABLE_R, 0x0);
}
-void i915_driver_irq_postinstall(drm_device_t * dev)
+int i915_driver_irq_postinstall(drm_device_t * dev)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- int i;
+ int ret, num_pipes = 2;
spin_lock_init(&dev_priv->swaps_lock);
INIT_LIST_HEAD(&dev_priv->vbl_swaps.head);
@@ -776,31 +761,10 @@ void i915_driver_irq_postinstall(drm_device_t * dev)
dev_priv->user_irq_lock = SPIN_LOCK_UNLOCKED;
dev_priv->user_irq_refcount = 0;
dev_priv->irq_enable_reg = 0;
- dev->vblank_count = kmalloc(sizeof(atomic_t) * 2, GFP_KERNEL);
- if (!dev->vblank_count) {
- DRM_ERROR("out of memory\n");
- return;
- }
- dev->vbl_pending = kmalloc(sizeof(atomic_t) * 2, GFP_KERNEL);
- if (!dev->vbl_pending) {
- DRM_ERROR("out of memory\n");
- kfree(dev->vblank_count);
- return;
- }
- dev->last_vblank = kmalloc(sizeof(atomic_t) * 2, GFP_KERNEL);
- if (!dev->last_vblank) {
- DRM_ERROR("out of memory\n");
- kfree(dev->vblank_count);
- return;
- }
- /* Zero per-crtc vblank stuff */
- for (i = 0; i < 2; i++) {
- atomic_set(&dev->vbl_pending[i], 0);
- atomic_set(&dev->vblank_count[i], 0);
- dev->last_vblank[i] = 0;
- dev_priv->vblank_offset[i] = 0;
- }
+ ret = drm_vblank_init(dev, num_pipes);
+ if (ret)
+ return ret;
dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
@@ -812,6 +776,7 @@ void i915_driver_irq_postinstall(drm_device_t * dev)
*/
I915_WRITE(I915REG_INSTPM, ( 1 << 5) | ( 1 << 21));
+ return 0;
}
void i915_driver_irq_uninstall(drm_device_t * dev)
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 06:42:33 +0000