diff options
Diffstat (limited to 'linux/drm_os_linux.h')
| -rw-r--r-- | linux/drm_os_linux.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/linux/drm_os_linux.h b/linux/drm_os_linux.h new file mode 100644 index 00000000..8c073f0b --- /dev/null +++ b/linux/drm_os_linux.h @@ -0,0 +1,56 @@ +#define __NO_VERSION__ + +#include <linux/interrupt.h> /* For task queue support */ +#include <linux/delay.h> + +#define DRM_IOCTL_ARGS struct inode *inode, struct file *filp, unsigned int cmd, unsigned long data +#define DRM_ERR(d) -(d) +#define DRM_CURRENTPID current->pid +#define DRM_UDELAY(d) udelay(d) +#define DRM_READ8(addr) readb(addr) +#define DRM_READ32(addr) readl(addr) +#define DRM_WRITE8(addr, val) writeb(val, addr) +#define DRM_WRITE32(addr, val) writel(val, addr) +#define DRM_READMEMORYBARRIER() mb() +#define DRM_WRITEMEMORYBARRIER() wmb() +#define DRM_DEVICE drm_file_t *priv = filp->private_data; \ + drm_device_t *dev = priv->dev + +/* For data going from/to the kernel through the ioctl argument */ +#define DRM_COPY_FROM_USER_IOCTL(arg1, arg2, arg3) \ + if ( copy_from_user(&arg1, arg2, arg3) ) \ + return -EFAULT +#define DRM_COPY_TO_USER_IOCTL(arg1, arg2, arg3) \ + if ( copy_to_user(arg1, &arg2, arg3) ) \ + return -EFAULT +/* Other copying of data from/to kernel space */ +#define DRM_COPY_FROM_USER(arg1, arg2, arg3) \ + copy_from_user(arg1, arg2, arg3) +#define DRM_COPY_TO_USER(arg1, arg2, arg3) \ + copy_to_user(arg1, arg2, arg3) +/* Macros for copyfrom user, but checking readability only once */ +#define DRM_VERIFYAREA_READ( uaddr, size ) \ + verify_area( VERIFY_READ, uaddr, size ) +#define DRM_COPY_FROM_USER_UNCHECKED(arg1, arg2, arg3) \ + __copy_from_user(arg1, arg2, arg3) +#define DRM_GET_USER_UNCHECKED(val, uaddr) \ + __get_user(val, uaddr) + + +/* malloc/free without the overhead of DRM(alloc) */ +#define DRM_MALLOC(x) kmalloc(x, GFP_KERNEL) +#define DRM_FREE(x) kfree(x) + +#define DRM_GETSAREA() \ +do { \ + struct list_head *list; \ + list_for_each( list, &dev->maplist->head ) { \ + drm_map_list_t *entry = (drm_map_list_t *)list; \ + if ( entry->map && \ + entry->map->type == _DRM_SHM && \ + (entry->map->flags & _DRM_CONTAINS_LOCK) ) { \ + dev_priv->sarea = entry->map; \ + break; \ + } \ + } \ +} while (0) |