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Diffstat (limited to 'linux-core/drm_scatter.c')
-rw-r--r--linux-core/drm_scatter.c49
1 files changed, 31 insertions, 18 deletions
diff --git a/linux-core/drm_scatter.c b/linux-core/drm_scatter.c
index e5c9f877..c0d6db24 100644
--- a/linux-core/drm_scatter.c
+++ b/linux-core/drm_scatter.c
@@ -55,6 +55,7 @@ void drm_sg_cleanup(drm_sg_mem_t * entry)
entry->pages * sizeof(*entry->pagelist), DRM_MEM_PAGES);
drm_free(entry, sizeof(*entry), DRM_MEM_SGLISTS);
}
+EXPORT_SYMBOL(drm_sg_cleanup);
#ifdef _LP64
# define ScatterHandle(x) (unsigned int)((x >> 32) + (x & ((1L << 32) - 1)))
@@ -62,13 +63,8 @@ void drm_sg_cleanup(drm_sg_mem_t * entry)
# define ScatterHandle(x) (unsigned int)(x)
#endif
-int drm_sg_alloc(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_sg_alloc(drm_device_t * dev, drm_scatter_gather_t * request)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_scatter_gather_t __user *argp = (void __user *)arg;
- drm_scatter_gather_t request;
drm_sg_mem_t *entry;
unsigned long pages, i, j;
@@ -80,17 +76,13 @@ int drm_sg_alloc(struct inode *inode, struct file *filp,
if (dev->sg)
return -EINVAL;
- if (copy_from_user(&request, argp, sizeof(request)))
- return -EFAULT;
-
entry = drm_alloc(sizeof(*entry), DRM_MEM_SGLISTS);
if (!entry)
return -ENOMEM;
memset(entry, 0, sizeof(*entry));
-
- pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
- DRM_DEBUG("sg size=%ld pages=%ld\n", request.size, pages);
+ pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE;
+ DRM_DEBUG("sg size=%ld pages=%ld\n", request->size, pages);
entry->pages = pages;
entry->pagelist = drm_alloc(pages * sizeof(*entry->pagelist),
@@ -142,12 +134,7 @@ int drm_sg_alloc(struct inode *inode, struct file *filp,
SetPageReserved(entry->pagelist[j]);
}
- request.handle = entry->handle;
-
- if (copy_to_user(argp, &request, sizeof(request))) {
- drm_sg_cleanup(entry);
- return -EFAULT;
- }
+ request->handle = entry->handle;
dev->sg = entry;
@@ -196,6 +183,32 @@ int drm_sg_alloc(struct inode *inode, struct file *filp,
failed:
drm_sg_cleanup(entry);
return -ENOMEM;
+
+}
+EXPORT_SYMBOL(drm_sg_alloc);
+
+int drm_sg_alloc_ioctl(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ drm_file_t *priv = filp->private_data;
+ drm_scatter_gather_t __user *argp = (void __user *)arg;
+ drm_scatter_gather_t request;
+ int ret;
+
+ if (copy_from_user(&request, argp, sizeof(request)))
+ return -EFAULT;
+
+ ret = drm_sg_alloc(priv->head->dev, &request);
+ if ( ret ) return ret;
+
+ if (copy_to_user(argp, &request, sizeof(request))) {
+ drm_sg_cleanup(priv->head->dev->sg);
+ return -EFAULT;
+ }
+
+
+ return 0;
+
}
int drm_sg_free(struct inode *inode, struct file *filp,