diff options
Diffstat (limited to 'linux/drm_dma.h')
| -rw-r--r-- | linux/drm_dma.h | 82 |
1 files changed, 79 insertions, 3 deletions
diff --git a/linux/drm_dma.h b/linux/drm_dma.h index dce376f6..2938c77a 100644 --- a/linux/drm_dma.h +++ b/linux/drm_dma.h @@ -538,8 +538,12 @@ int DRM(irq_install)( drm_device_t *dev, int irq ) dev->tq.data = dev; #endif +#if __HAVE_VBL_IRQ + init_waitqueue_head(&dev->vbl_queue); +#endif + /* Before installing handler */ - DRIVER_PREINSTALL(); + DRM(driver_irq_preinstall)(dev); /* Install handler */ ret = request_irq( dev->irq, DRM(dma_service), @@ -552,7 +556,7 @@ int DRM(irq_install)( drm_device_t *dev, int irq ) } /* After installing handler */ - DRIVER_POSTINSTALL(); + DRM(driver_irq_postinstall)(dev); return 0; } @@ -571,7 +575,7 @@ int DRM(irq_uninstall)( drm_device_t *dev ) DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, irq ); - DRIVER_UNINSTALL(); + DRM(driver_irq_uninstall)( dev ); free_irq( irq, dev ); @@ -598,6 +602,78 @@ int DRM(control)( struct inode *inode, struct file *filp, } } +#if __HAVE_VBL_IRQ + +int DRM(vblank_wait)(drm_device_t *dev, unsigned int *sequence) +{ + 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", __func__ ); + return DRM_ERR(EINVAL); + } + + /* 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 :) + */ + while ( ( ( cur_vblank = atomic_read(&dev->vbl_received ) ) + + ~*sequence + 1 ) > (1<<23) ) { + dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE; +#ifdef __linux__ + interruptible_sleep_on( &dev->vbl_queue ); + + if (signal_pending(current)) { + ret = -EINTR; + break; + } +#endif /* __linux__ */ +#ifdef __FreeBSD__ + ret = tsleep( &dev_priv->vbl_queue, 3*hz, "rdnvbl", PZERO | PCATCH); + if (ret) + break; +#endif /* __FreeBSD__ */ + } + + *sequence = cur_vblank; + + return ret; +} + +int DRM(wait_vblank)( DRM_IOCTL_ARGS ) +{ + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->dev; + drm_wait_vblank_t vblwait; + struct timeval now; + int ret; + + if (!dev->irq) + return -EINVAL; + + DRM_COPY_FROM_USER_IOCTL( vblwait, (drm_wait_vblank_t *)data, + sizeof(vblwait) ); + + if ( vblwait.type == _DRM_VBLANK_RELATIVE ) { + vblwait.sequence += atomic_read( &dev->vbl_received ); + } + + ret = DRM(vblank_wait)( dev, &vblwait.sequence ); + + do_gettimeofday( &now ); + vblwait.tval_sec = now.tv_sec; + vblwait.tval_usec = now.tv_usec; + + DRM_COPY_TO_USER_IOCTL( (drm_wait_vblank_t *)data, vblwait, + sizeof(vblwait) ); + + return ret; +} + +#endif /* __HAVE_VBL_IRQ */ + #else int DRM(control)( struct inode *inode, struct file *filp, |