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path: root/drivers/char/drm/i830_irq.c
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Diffstat (limited to 'drivers/char/drm/i830_irq.c')
-rw-r--r--drivers/char/drm/i830_irq.c137
1 files changed, 66 insertions, 71 deletions
diff --git a/drivers/char/drm/i830_irq.c b/drivers/char/drm/i830_irq.c
index a5923e5d0a771..5841f7674956b 100644
--- a/drivers/char/drm/i830_irq.c
+++ b/drivers/char/drm/i830_irq.c
@@ -9,11 +9,11 @@
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
- *
+ *
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
- *
+ *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
@@ -33,28 +33,27 @@
#include <linux/interrupt.h> /* For task queue support */
#include <linux/delay.h>
-
-irqreturn_t i830_driver_irq_handler( DRM_IRQ_ARGS )
+irqreturn_t i830_driver_irq_handler(DRM_IRQ_ARGS)
{
- drm_device_t *dev = (drm_device_t *)arg;
- drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private;
- u16 temp;
+ drm_device_t *dev = (drm_device_t *) arg;
+ drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
+ u16 temp;
- temp = I830_READ16(I830REG_INT_IDENTITY_R);
+ temp = I830_READ16(I830REG_INT_IDENTITY_R);
DRM_DEBUG("%x\n", temp);
- if ( !( temp & 2 ) )
+ if (!(temp & 2))
return IRQ_NONE;
- I830_WRITE16(I830REG_INT_IDENTITY_R, temp);
+ I830_WRITE16(I830REG_INT_IDENTITY_R, temp);
atomic_inc(&dev_priv->irq_received);
- wake_up_interruptible(&dev_priv->irq_queue);
+ wake_up_interruptible(&dev_priv->irq_queue);
return IRQ_HANDLED;
}
-static int i830_emit_irq(drm_device_t *dev)
+static int i830_emit_irq(drm_device_t * dev)
{
drm_i830_private_t *dev_priv = dev->dev_private;
RING_LOCALS;
@@ -63,27 +62,25 @@ static int i830_emit_irq(drm_device_t *dev)
atomic_inc(&dev_priv->irq_emitted);
- BEGIN_LP_RING(2);
- OUT_RING( 0 );
- OUT_RING( GFX_OP_USER_INTERRUPT );
- ADVANCE_LP_RING();
+ BEGIN_LP_RING(2);
+ OUT_RING(0);
+ OUT_RING(GFX_OP_USER_INTERRUPT);
+ ADVANCE_LP_RING();
return atomic_read(&dev_priv->irq_emitted);
}
-
-static int i830_wait_irq(drm_device_t *dev, int irq_nr)
+static int i830_wait_irq(drm_device_t * dev, int irq_nr)
{
- drm_i830_private_t *dev_priv =
- (drm_i830_private_t *)dev->dev_private;
+ drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
DECLARE_WAITQUEUE(entry, current);
- unsigned long end = jiffies + HZ*3;
+ unsigned long end = jiffies + HZ * 3;
int ret = 0;
DRM_DEBUG("%s\n", __FUNCTION__);
- if (atomic_read(&dev_priv->irq_received) >= irq_nr)
- return 0;
+ if (atomic_read(&dev_priv->irq_received) >= irq_nr)
+ return 0;
dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT;
@@ -91,21 +88,21 @@ static int i830_wait_irq(drm_device_t *dev, int irq_nr)
for (;;) {
__set_current_state(TASK_INTERRUPTIBLE);
- if (atomic_read(&dev_priv->irq_received) >= irq_nr)
- break;
- if((signed)(end - jiffies) <= 0) {
+ if (atomic_read(&dev_priv->irq_received) >= irq_nr)
+ break;
+ if ((signed)(end - jiffies) <= 0) {
DRM_ERROR("timeout iir %x imr %x ier %x hwstam %x\n",
- I830_READ16( I830REG_INT_IDENTITY_R ),
- I830_READ16( I830REG_INT_MASK_R ),
- I830_READ16( I830REG_INT_ENABLE_R ),
- I830_READ16( I830REG_HWSTAM ));
+ I830_READ16(I830REG_INT_IDENTITY_R),
+ I830_READ16(I830REG_INT_MASK_R),
+ I830_READ16(I830REG_INT_ENABLE_R),
+ I830_READ16(I830REG_HWSTAM));
- ret = -EBUSY; /* Lockup? Missed irq? */
+ ret = -EBUSY; /* Lockup? Missed irq? */
break;
}
- schedule_timeout(HZ*3);
- if (signal_pending(current)) {
- ret = -EINTR;
+ schedule_timeout(HZ * 3);
+ if (signal_pending(current)) {
+ ret = -EINTR;
break;
}
}
@@ -115,89 +112,87 @@ static int i830_wait_irq(drm_device_t *dev, int irq_nr)
return ret;
}
-
/* Needs the lock as it touches the ring.
*/
-int i830_irq_emit( struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg )
+int i830_irq_emit(struct inode *inode, struct file *filp, unsigned int cmd,
+ unsigned long arg)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->head->dev;
drm_i830_private_t *dev_priv = dev->dev_private;
drm_i830_irq_emit_t emit;
int result;
LOCK_TEST_WITH_RETURN(dev, filp);
- if ( !dev_priv ) {
- DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
+ if (!dev_priv) {
+ DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
return -EINVAL;
}
- if (copy_from_user( &emit, (drm_i830_irq_emit_t __user *)arg, sizeof(emit) ))
+ if (copy_from_user
+ (&emit, (drm_i830_irq_emit_t __user *) arg, sizeof(emit)))
return -EFAULT;
- result = i830_emit_irq( dev );
+ result = i830_emit_irq(dev);
- if ( copy_to_user( emit.irq_seq, &result, sizeof(int) ) ) {
- DRM_ERROR( "copy_to_user\n" );
+ if (copy_to_user(emit.irq_seq, &result, sizeof(int))) {
+ DRM_ERROR("copy_to_user\n");
return -EFAULT;
}
return 0;
}
-
/* Doesn't need the hardware lock.
*/
-int i830_irq_wait( struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg )
+int i830_irq_wait(struct inode *inode, struct file *filp, unsigned int cmd,
+ unsigned long arg)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->head->dev;
drm_i830_private_t *dev_priv = dev->dev_private;
drm_i830_irq_wait_t irqwait;
- if ( !dev_priv ) {
- DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
+ if (!dev_priv) {
+ DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
return -EINVAL;
}
- if (copy_from_user( &irqwait, (drm_i830_irq_wait_t __user *)arg,
- sizeof(irqwait) ))
+ if (copy_from_user(&irqwait, (drm_i830_irq_wait_t __user *) arg,
+ sizeof(irqwait)))
return -EFAULT;
- return i830_wait_irq( dev, irqwait.irq_seq );
+ return i830_wait_irq(dev, irqwait.irq_seq);
}
-
/* drm_dma.h hooks
*/
-void i830_driver_irq_preinstall( drm_device_t *dev ) {
- drm_i830_private_t *dev_priv =
- (drm_i830_private_t *)dev->dev_private;
+void i830_driver_irq_preinstall(drm_device_t * dev)
+{
+ drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
- I830_WRITE16( I830REG_HWSTAM, 0xffff );
- I830_WRITE16( I830REG_INT_MASK_R, 0x0 );
- I830_WRITE16( I830REG_INT_ENABLE_R, 0x0 );
+ I830_WRITE16(I830REG_HWSTAM, 0xffff);
+ I830_WRITE16(I830REG_INT_MASK_R, 0x0);
+ I830_WRITE16(I830REG_INT_ENABLE_R, 0x0);
atomic_set(&dev_priv->irq_received, 0);
atomic_set(&dev_priv->irq_emitted, 0);
init_waitqueue_head(&dev_priv->irq_queue);
}
-void i830_driver_irq_postinstall( drm_device_t *dev ) {
- drm_i830_private_t *dev_priv =
- (drm_i830_private_t *)dev->dev_private;
+void i830_driver_irq_postinstall(drm_device_t * dev)
+{
+ drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
- I830_WRITE16( I830REG_INT_ENABLE_R, 0x2 );
+ I830_WRITE16(I830REG_INT_ENABLE_R, 0x2);
}
-void i830_driver_irq_uninstall( drm_device_t *dev ) {
- drm_i830_private_t *dev_priv =
- (drm_i830_private_t *)dev->dev_private;
+void i830_driver_irq_uninstall(drm_device_t * dev)
+{
+ drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
if (!dev_priv)
return;
- I830_WRITE16( I830REG_INT_MASK_R, 0xffff );
- I830_WRITE16( I830REG_INT_ENABLE_R, 0x0 );
+ I830_WRITE16(I830REG_INT_MASK_R, 0xffff);
+ I830_WRITE16(I830REG_INT_ENABLE_R, 0x0);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-14 20:14:40 +0000