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-rw-r--r--linux/drm_os_linux.h56
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)