Made drm_sg_alloc accessible from inside the DRM - drm_sg_alloc_ioctl is the ioctl wrapper

3 files changed, 27 insertions, 17 deletions

diff --git a/bsd-core/drmP.h b/bsd-core/drmP.h
index 9ba3d502..6e05b58f 100644
--- a/bsd-core/drmP.h
+++ b/bsd-core/drmP.h
@@ -915,6 +915,7 @@ int	drm_agp_unbind(drm_device_t *dev, drm_agp_binding_t *request);
 
 /* Scatter Gather Support (drm_scatter.c) */
 void	drm_sg_cleanup(drm_sg_mem_t *entry);
+int	drm_sg_alloc(drm_device_t * dev, drm_scatter_gather_t * request);
 
 #ifdef __FreeBSD__
 /* sysctl support (drm_sysctl.h) */
@@ -989,7 +990,7 @@ int	drm_agp_unbind_ioctl(DRM_IOCTL_ARGS);
 int	drm_agp_bind_ioctl(DRM_IOCTL_ARGS);
 
 /* Scatter Gather Support (drm_scatter.c) */
-int	drm_sg_alloc(DRM_IOCTL_ARGS);
+int	drm_sg_alloc_ioctl(DRM_IOCTL_ARGS);
 int	drm_sg_free(DRM_IOCTL_ARGS);
 
 /* consistent PCI memory functions (drm_pci.c) */
diff --git a/bsd-core/drm_drv.c b/bsd-core/drm_drv.c
index baaeb43c..069774c1 100644
--- a/bsd-core/drm_drv.c
+++ b/bsd-core/drm_drv.c
@@ -117,7 +117,7 @@ static drm_ioctl_desc_t		  drm_ioctls[256] = {
 	[DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)]      = { drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY },
 	[DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)]    = { drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY },
 
-	[DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)]      = { drm_sg_alloc,    DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY },
+	[DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)]      = { drm_sg_alloc_ioctl,    DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY },
 	[DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)]       = { drm_sg_free,     DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY },
 
 	[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)]   = { drm_wait_vblank, 0 },
diff --git a/bsd-core/drm_scatter.c b/bsd-core/drm_scatter.c
index 9dc280a4..46222f18 100644
--- a/bsd-core/drm_scatter.c
+++ b/bsd-core/drm_scatter.c
@@ -40,28 +40,20 @@ void drm_sg_cleanup(drm_sg_mem_t *entry)
 	free(entry, M_DRM);
 }
 
-int drm_sg_alloc(DRM_IOCTL_ARGS)
+int drm_sg_alloc(drm_device_t * dev, drm_scatter_gather_t * request)
 {
-	DRM_DEVICE;
-	drm_scatter_gather_t request;
 	drm_sg_mem_t *entry;
 	unsigned long pages;
-	int i;
-
-	DRM_DEBUG( "%s\n", __FUNCTION__ );
 
 	if ( dev->sg )
 		return EINVAL;
 
-	DRM_COPY_FROM_USER_IOCTL(request, (drm_scatter_gather_t *)data,
-			     sizeof(request) );
-
 	entry = malloc(sizeof(*entry), M_DRM, M_WAITOK | M_ZERO);
 	if ( !entry )
 		return ENOMEM;
 
 	pages = round_page(request.size) / PAGE_SIZE;
-	DRM_DEBUG( "sg size=%ld pages=%ld\n", request.size, pages );
+	DRM_DEBUG( "sg size=%ld pages=%ld\n", request->size, pages );
 
 	entry->pages = pages;
 
@@ -86,11 +78,7 @@ int drm_sg_alloc(DRM_IOCTL_ARGS)
 	DRM_DEBUG( "sg alloc handle  = %08lx\n", entry->handle );
 
 	entry->virtual = (void *)entry->handle;
-	request.handle = entry->handle;
-
-	DRM_COPY_TO_USER_IOCTL( (drm_scatter_gather_t *)data,
-			   request,
-			   sizeof(request) );
+	request->handle = entry->handle;
 
 	DRM_LOCK();
 	if (dev->sg) {
@@ -101,6 +89,27 @@ int drm_sg_alloc(DRM_IOCTL_ARGS)
 	dev->sg = entry;
 	DRM_UNLOCK();
 
+}
+
+int drm_sg_alloc_ioctl(DRM_IOCTL_ARGS)
+{
+	DRM_DEVICE;
+	drm_scatter_gather_t request;
+	int ret;
+
+	DRM_DEBUG( "%s\n", __FUNCTION__ );
+
+
+	DRM_COPY_FROM_USER_IOCTL(request, (drm_scatter_gather_t *)data,
+			     sizeof(request) );
+
+	ret = drm_sg_alloc(dev, &request);
+	if ( ret ) return ret;
+
+	DRM_COPY_TO_USER_IOCTL( (drm_scatter_gather_t *)data,
+			   request,
+			   sizeof(request) );
+
 	return 0;
 }