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-rw-r--r--linux-core/drmP.h1
-rw-r--r--linux-core/drm_irq.c17
-rw-r--r--shared-core/i915_dma.c11
-rw-r--r--shared-core/i915_drv.h13
-rw-r--r--shared-core/i915_irq.c27
5 files changed, 54 insertions, 15 deletions
diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index cf1c0fd7..0ab69feb 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -832,6 +832,7 @@ typedef struct drm_device {
/* for wraparound handling */
u32 *vblank_offset; /* used to track how many vblanks */
u32 *vblank_premodeset; /* were lost during modeset */
+ struct timer_list vblank_disable_timer;
unsigned long max_vblank_count; /**< size of vblank counter register */
spinlock_t tasklet_lock; /**< For drm_locked_tasklet */
diff --git a/linux-core/drm_irq.c b/linux-core/drm_irq.c
index 5d8d71be..eea00ac8 100644
--- a/linux-core/drm_irq.c
+++ b/linux-core/drm_irq.c
@@ -77,10 +77,22 @@ int drm_irq_by_busid(struct inode *inode, struct file *filp,
return 0;
}
+static void vblank_disable_fn(unsigned long arg)
+{
+ drm_device_t *dev = (drm_device_t *)arg;
+ int i;
+
+ for (i = 0; i < dev->num_crtcs; i++)
+ if (atomic_read(&dev->vblank_refcount[i]) == 0)
+ dev->driver->disable_vblank(dev, i);
+}
+
int drm_vblank_init(drm_device_t *dev, int num_crtcs)
{
int i, ret = -ENOMEM;
+ setup_timer(&dev->vblank_disable_timer, vblank_disable_fn,\
+ (unsigned long)dev);
spin_lock_init(&dev->vbl_lock);
atomic_set(&dev->vbl_signal_pending, 0);
dev->num_crtcs = num_crtcs;
@@ -374,9 +386,10 @@ EXPORT_SYMBOL(drm_vblank_get);
*/
void drm_vblank_put(drm_device_t *dev, int crtc)
{
- /* Last user can disable interrupts */
+ /* Last user schedules interrupt disable */
if (atomic_dec_and_test(&dev->vblank_refcount[crtc]))
- dev->driver->disable_vblank(dev, crtc);
+ mod_timer(&dev->vblank_disable_timer,
+ round_jiffies_relative(DRM_HZ));
}
EXPORT_SYMBOL(drm_vblank_put);
diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c
index ebb184cc..b2398896 100644
--- a/shared-core/i915_dma.c
+++ b/shared-core/i915_dma.c
@@ -31,17 +31,6 @@
#include "i915_drm.h"
#include "i915_drv.h"
-#define IS_I965G(dev) (dev->pci_device == 0x2972 || \
- dev->pci_device == 0x2982 || \
- dev->pci_device == 0x2992 || \
- dev->pci_device == 0x29A2 || \
- dev->pci_device == 0x2A02 || \
- dev->pci_device == 0x2A12)
-
-#define IS_G33(dev) (dev->pci_device == 0x29C2 || \
- dev->pci_device == 0x29B2 || \
- dev->pci_device == 0x29D2)
-
/* Really want an OS-independent resettable timer. Would like to have
* this loop run for (eg) 3 sec, but have the timer reset every time
* the head pointer changes, so that EBUSY only happens if the ring
diff --git a/shared-core/i915_drv.h b/shared-core/i915_drv.h
index 213759a8..c8961c08 100644
--- a/shared-core/i915_drv.h
+++ b/shared-core/i915_drv.h
@@ -396,4 +396,17 @@ extern int i915_wait_ring(drm_device_t * dev, int n, const char *caller);
#define READ_BREADCRUMB(dev_priv) (((volatile u32*)(dev_priv->hw_status_page))[5])
#define READ_HWSP(dev_priv, reg) (((volatile u32*)(dev_priv->hw_status_page))[reg])
+
+#define IS_I965G(dev) (dev->pci_device == 0x2972 || \
+ dev->pci_device == 0x2982 || \
+ dev->pci_device == 0x2992 || \
+ dev->pci_device == 0x29A2 || \
+ dev->pci_device == 0x2A02 || \
+ dev->pci_device == 0x2A12)
+
+#define IS_G33(dev) (dev->pci_device == 0x29C2 || \
+ dev->pci_device == 0x29B2 || \
+ dev->pci_device == 0x29D2)
+
+
#endif
diff --git a/shared-core/i915_irq.c b/shared-core/i915_irq.c
index 713ec654..c0c1bf9e 100644
--- a/shared-core/i915_irq.c
+++ b/shared-core/i915_irq.c
@@ -285,6 +285,9 @@ u32 i915_get_vblank_counter(drm_device_t *dev, int crtc)
unsigned long low_frame = crtc ? PIPEBFRAMEPIXEL : PIPEAFRAMEPIXEL;
u32 high1, high2, low, count;
+ if (!IS_I965G(dev))
+ return 0;
+
/*
* High & low register fields aren't synchronized, so make sure
* we get a low value that's stable across two reads of the high
@@ -315,7 +318,6 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
pipeb_stats = I915_READ(I915REG_PIPEBSTAT);
temp = I915_READ16(I915REG_INT_IDENTITY_R);
- temp &= (dev_priv->irq_enable_reg | USER_INT_FLAG);
#if 0
DRM_DEBUG("%s flag=%08x\n", __FUNCTION__, temp);
@@ -324,7 +326,10 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
return IRQ_NONE;
I915_WRITE16(I915REG_INT_IDENTITY_R, temp);
- (void) I915_READ16(I915REG_INT_IDENTITY_R);
+ (void) I915_READ16(I915REG_INT_IDENTITY_R); /* Flush posted write */
+
+ temp &= (dev_priv->irq_enable_reg | USER_INT_FLAG | VSYNC_PIPEA_FLAG |
+ VSYNC_PIPEB_FLAG);
dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
@@ -335,6 +340,13 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
#endif
}
+ if (!IS_I965G(dev)) {
+ if (temp & VSYNC_PIPEA_FLAG)
+ atomic_inc(&dev->_vblank_count[0]);
+ if (temp & VSYNC_PIPEB_FLAG)
+ atomic_inc(&dev->_vblank_count[1]);
+ }
+
/*
* Use drm_update_vblank_counter here to deal with potential lost
* interrupts
@@ -482,6 +494,9 @@ int i915_enable_vblank(drm_device_t *dev, int crtc)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ if (!IS_I965G(dev))
+ return 0;
+
switch (crtc) {
case 0:
dev_priv->irq_enable_reg |= VSYNC_PIPEA_FLAG;
@@ -504,6 +519,9 @@ void i915_disable_vblank(drm_device_t *dev, int crtc)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ if (!IS_I965G(dev))
+ return;
+
switch (crtc) {
case 0:
dev_priv->irq_enable_reg &= ~VSYNC_PIPEA_FLAG;
@@ -763,6 +781,11 @@ int i915_driver_irq_postinstall(drm_device_t * dev)
dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
+ if (!IS_I965G(dev)) {
+ dev_priv->irq_enable_reg |= VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG;
+ I915_WRITE16(I915REG_INT_ENABLE_R, dev_priv->irq_enable_reg);
+ }
+
i915_enable_interrupt(dev);
DRM_INIT_WAITQUEUE(&dev_priv->irq_queue);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 16:36:34 +0000