/* radeon_irq.c -- IRQ handling for radeon -*- linux-c -*-
*
* Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
- *
+ *
* The Weather Channel (TM) funded Tungsten Graphics to develop the
* initial release of the Radeon 8500 driver under the XFree86 license.
* This notice must be preserved.
#include "radeon_drm.h"
#include "radeon_drv.h"
+static __inline__ u32 radeon_acknowledge_irqs(drm_radeon_private_t * dev_priv,
+ u32 mask)
+{
+ u32 irqs = RADEON_READ(RADEON_GEN_INT_STATUS) & mask;
+ if (irqs)
+ RADEON_WRITE(RADEON_GEN_INT_STATUS, irqs);
+ return irqs;
+}
+
/* Interrupts - Used for device synchronization and flushing in the
* following circumstances:
*
* tied to dma at all, this is just a hangover from dri prehistory.
*/
-irqreturn_t radeon_driver_irq_handler( DRM_IRQ_ARGS )
+irqreturn_t radeon_driver_irq_handler(DRM_IRQ_ARGS)
{
drm_device_t *dev = (drm_device_t *) arg;
- drm_radeon_private_t *dev_priv =
- (drm_radeon_private_t *)dev->dev_private;
- u32 stat;
+ drm_radeon_private_t *dev_priv =
+ (drm_radeon_private_t *) dev->dev_private;
+ u32 stat;
/* Only consider the bits we're interested in - others could be used
* outside the DRM
*/
- stat = RADEON_READ(RADEON_GEN_INT_STATUS)
- & (RADEON_SW_INT_TEST | RADEON_CRTC_VBLANK_STAT);
+ stat = radeon_acknowledge_irqs(dev_priv, (RADEON_SW_INT_TEST_ACK |
+ RADEON_CRTC_VBLANK_STAT));
if (!stat)
return IRQ_NONE;
/* SW interrupt */
if (stat & RADEON_SW_INT_TEST) {
- DRM_WAKEUP( &dev_priv->swi_queue );
+ DRM_WAKEUP(&dev_priv->swi_queue);
}
/* VBLANK interrupt */
if (stat & RADEON_CRTC_VBLANK_STAT) {
atomic_inc(&dev->vbl_received);
DRM_WAKEUP(&dev->vbl_queue);
- drm_vbl_send_signals( dev );
+ drm_vbl_send_signals(dev);
}
- /* Acknowledge interrupts we handle */
- RADEON_WRITE(RADEON_GEN_INT_STATUS, stat);
return IRQ_HANDLED;
}
-static __inline__ void radeon_acknowledge_irqs(drm_radeon_private_t *dev_priv)
-{
- u32 tmp = RADEON_READ( RADEON_GEN_INT_STATUS )
- & (RADEON_SW_INT_TEST_ACK | RADEON_CRTC_VBLANK_STAT);
- if (tmp)
- RADEON_WRITE( RADEON_GEN_INT_STATUS, tmp );
-}
-
-static int radeon_emit_irq(drm_device_t *dev)
+static int radeon_emit_irq(drm_device_t * dev)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
unsigned int ret;
atomic_inc(&dev_priv->swi_emitted);
ret = atomic_read(&dev_priv->swi_emitted);
- BEGIN_RING( 4 );
- OUT_RING_REG( RADEON_LAST_SWI_REG, ret );
- OUT_RING_REG( RADEON_GEN_INT_STATUS, RADEON_SW_INT_FIRE );
- ADVANCE_RING();
- COMMIT_RING();
+ BEGIN_RING(4);
+ OUT_RING_REG(RADEON_LAST_SWI_REG, ret);
+ OUT_RING_REG(RADEON_GEN_INT_STATUS, RADEON_SW_INT_FIRE);
+ ADVANCE_RING();
+ COMMIT_RING();
return ret;
}
-
-static int radeon_wait_irq(drm_device_t *dev, int swi_nr)
+static int radeon_wait_irq(drm_device_t * dev, int swi_nr)
{
- drm_radeon_private_t *dev_priv =
- (drm_radeon_private_t *)dev->dev_private;
+ drm_radeon_private_t *dev_priv =
+ (drm_radeon_private_t *) dev->dev_private;
int ret = 0;
- if (RADEON_READ( RADEON_LAST_SWI_REG ) >= swi_nr)
- return 0;
+ if (RADEON_READ(RADEON_LAST_SWI_REG) >= swi_nr)
+ return 0;
dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
- DRM_WAIT_ON( ret, dev_priv->swi_queue, 3 * DRM_HZ,
- RADEON_READ( RADEON_LAST_SWI_REG ) >= swi_nr );
+ DRM_WAIT_ON(ret, dev_priv->swi_queue, 3 * DRM_HZ,
+ RADEON_READ(RADEON_LAST_SWI_REG) >= swi_nr);
return ret;
}
-int radeon_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence)
+int radeon_driver_vblank_wait(drm_device_t * dev, unsigned int *sequence)
{
- drm_radeon_private_t *dev_priv =
- (drm_radeon_private_t *)dev->dev_private;
+ drm_radeon_private_t *dev_priv =
+ (drm_radeon_private_t *) dev->dev_private;
unsigned int cur_vblank;
int ret = 0;
- 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 DRM_ERR(EINVAL);
}
- radeon_acknowledge_irqs( dev_priv );
+ radeon_acknowledge_irqs(dev_priv, RADEON_CRTC_VBLANK_STAT);
dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
/* Assume that the user has missed the current sequence number
* by about a day rather than she wants to wait for years
- * using vertical blanks...
+ * using vertical blanks...
*/
- DRM_WAIT_ON( ret, dev->vbl_queue, 3*DRM_HZ,
- ( ( ( cur_vblank = atomic_read(&dev->vbl_received ) )
- - *sequence ) <= (1<<23) ) );
+ DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
+ (((cur_vblank = atomic_read(&dev->vbl_received))
+ - *sequence) <= (1 << 23)));
*sequence = cur_vblank;
return ret;
}
-
/* Needs the lock as it touches the ring.
*/
-int radeon_irq_emit( DRM_IOCTL_ARGS )
+int radeon_irq_emit(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_radeon_private_t *dev_priv = dev->dev_private;
drm_radeon_irq_emit_t emit;
int result;
- LOCK_TEST_WITH_RETURN( dev, filp );
+ 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 DRM_ERR(EINVAL);
}
- DRM_COPY_FROM_USER_IOCTL( emit, (drm_radeon_irq_emit_t __user *)data,
- sizeof(emit) );
+ DRM_COPY_FROM_USER_IOCTL(emit, (drm_radeon_irq_emit_t __user *) data,
+ sizeof(emit));
- result = radeon_emit_irq( dev );
+ result = radeon_emit_irq(dev);
- if ( DRM_COPY_TO_USER( emit.irq_seq, &result, sizeof(int) ) ) {
- DRM_ERROR( "copy_to_user\n" );
+ if (DRM_COPY_TO_USER(emit.irq_seq, &result, sizeof(int))) {
+ DRM_ERROR("copy_to_user\n");
return DRM_ERR(EFAULT);
}
return 0;
}
-
/* Doesn't need the hardware lock.
*/
-int radeon_irq_wait( DRM_IOCTL_ARGS )
+int radeon_irq_wait(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_radeon_private_t *dev_priv = dev->dev_private;
drm_radeon_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 DRM_ERR(EINVAL);
}
- DRM_COPY_FROM_USER_IOCTL( irqwait, (drm_radeon_irq_wait_t __user*)data,
- sizeof(irqwait) );
+ DRM_COPY_FROM_USER_IOCTL(irqwait, (drm_radeon_irq_wait_t __user *) data,
+ sizeof(irqwait));
- return radeon_wait_irq( dev, irqwait.irq_seq );
+ return radeon_wait_irq(dev, irqwait.irq_seq);
}
-
/* drm_dma.h hooks
*/
-void radeon_driver_irq_preinstall( drm_device_t *dev ) {
+void radeon_driver_irq_preinstall(drm_device_t * dev)
+{
drm_radeon_private_t *dev_priv =
- (drm_radeon_private_t *)dev->dev_private;
+ (drm_radeon_private_t *) dev->dev_private;
- /* Disable *all* interrupts */
- RADEON_WRITE( RADEON_GEN_INT_CNTL, 0 );
+ /* Disable *all* interrupts */
+ RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
/* Clear bits if they're already high */
- radeon_acknowledge_irqs( dev_priv );
+ radeon_acknowledge_irqs(dev_priv, (RADEON_SW_INT_TEST_ACK |
+ RADEON_CRTC_VBLANK_STAT));
}
-void radeon_driver_irq_postinstall( drm_device_t *dev ) {
+void radeon_driver_irq_postinstall(drm_device_t * dev)
+{
drm_radeon_private_t *dev_priv =
- (drm_radeon_private_t *)dev->dev_private;
+ (drm_radeon_private_t *) dev->dev_private;
- atomic_set(&dev_priv->swi_emitted, 0);
- DRM_INIT_WAITQUEUE( &dev_priv->swi_queue );
+ atomic_set(&dev_priv->swi_emitted, 0);
+ DRM_INIT_WAITQUEUE(&dev_priv->swi_queue);
/* Turn on SW and VBL ints */
- RADEON_WRITE( RADEON_GEN_INT_CNTL,
- RADEON_CRTC_VBLANK_MASK |
- RADEON_SW_INT_ENABLE );
+ RADEON_WRITE(RADEON_GEN_INT_CNTL,
+ RADEON_CRTC_VBLANK_MASK | RADEON_SW_INT_ENABLE);
}
-void radeon_driver_irq_uninstall( drm_device_t *dev ) {
+void radeon_driver_irq_uninstall(drm_device_t * dev)
+{
drm_radeon_private_t *dev_priv =
- (drm_radeon_private_t *)dev->dev_private;
+ (drm_radeon_private_t *) dev->dev_private;
if (!dev_priv)
return;
/* Disable *all* interrupts */
- RADEON_WRITE( RADEON_GEN_INT_CNTL, 0 );
+ RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
}
git://git.onelab.eu / linux-2.6.git / blobdiff