merged bsd-3-0-0-branchbsd-3-0-0-20020705-merge

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 000000000..8c073f0ba
--- /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)