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Diffstat (limited to 'bsd/drm_scatter.h')
-rw-r--r--bsd/drm_scatter.h115
1 files changed, 41 insertions, 74 deletions
diff --git a/bsd/drm_scatter.h b/bsd/drm_scatter.h
index 07e8e4e5..c16b7c05 100644
--- a/bsd/drm_scatter.h
+++ b/bsd/drm_scatter.h
@@ -27,25 +27,15 @@
* Gareth Hughes <gareth@valinux.com>
*/
-#define __NO_VERSION__
-#include <linux/config.h>
-#include <linux/vmalloc.h>
#include "drmP.h"
#define DEBUG_SCATTER 0
+#if __REALLY_HAVE_SG
+
void DRM(sg_cleanup)( drm_sg_mem_t *entry )
{
- struct page *page;
- int i;
-
- for ( i = 0 ; i < entry->pages ; i++ ) {
- page = entry->pagelist[i];
- if ( page )
- ClearPageReserved( page );
- }
-
- vfree( entry->virtual );
+ free( entry->virtual, DRM(M_DRM) );
DRM(free)( entry->busaddr,
entry->pages * sizeof(*entry->busaddr),
@@ -58,35 +48,28 @@ void DRM(sg_cleanup)( drm_sg_mem_t *entry )
DRM_MEM_SGLISTS );
}
-int DRM(sg_alloc)( struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg )
+int DRM(sg_alloc)( DRM_IOCTL_ARGS )
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
+ DRM_DEVICE;
drm_scatter_gather_t request;
drm_sg_mem_t *entry;
- unsigned long pages, i, j;
- pgd_t *pgd;
- pmd_t *pmd;
- pte_t *pte;
+ unsigned long pages;
DRM_DEBUG( "%s\n", __FUNCTION__ );
if ( dev->sg )
- return -EINVAL;
+ return EINVAL;
- if ( copy_from_user( &request,
- (drm_scatter_gather_t *)arg,
- sizeof(request) ) )
- return -EFAULT;
+ DRM_COPY_FROM_USER_IOCTL(request, (drm_scatter_gather_t *)data,
+ sizeof(request) );
entry = DRM(alloc)( sizeof(*entry), DRM_MEM_SGLISTS );
if ( !entry )
- return -ENOMEM;
+ return ENOMEM;
- memset( entry, 0, sizeof(*entry) );
+ bzero( entry, sizeof(*entry) );
- pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
+ pages = round_page(request.size) / PAGE_SIZE;
DRM_DEBUG( "sg size=%ld pages=%ld\n", request.size, pages );
entry->pages = pages;
@@ -94,10 +77,10 @@ int DRM(sg_alloc)( struct inode *inode, struct file *filp,
DRM_MEM_PAGES );
if ( !entry->pagelist ) {
DRM(free)( entry, sizeof(*entry), DRM_MEM_SGLISTS );
- return -ENOMEM;
+ return ENOMEM;
}
- memset(entry->pagelist, 0, pages * sizeof(*entry->pagelist));
+ bzero(entry->pagelist, pages * sizeof(*entry->pagelist));
entry->busaddr = DRM(alloc)( pages * sizeof(*entry->busaddr),
DRM_MEM_PAGES );
@@ -108,11 +91,11 @@ int DRM(sg_alloc)( struct inode *inode, struct file *filp,
DRM(free)( entry,
sizeof(*entry),
DRM_MEM_SGLISTS );
- return -ENOMEM;
+ return ENOMEM;
}
- memset( (void *)entry->busaddr, 0, pages * sizeof(*entry->busaddr) );
+ bzero( (void *)entry->busaddr, pages * sizeof(*entry->busaddr) );
- entry->virtual = vmalloc_32( pages << PAGE_SHIFT );
+ entry->virtual = malloc( pages << PAGE_SHIFT, DRM(M_DRM), M_WAITOK );
if ( !entry->virtual ) {
DRM(free)( entry->busaddr,
entry->pages * sizeof(*entry->busaddr),
@@ -123,45 +106,21 @@ int DRM(sg_alloc)( struct inode *inode, struct file *filp,
DRM(free)( entry,
sizeof(*entry),
DRM_MEM_SGLISTS );
- return -ENOMEM;
+ return ENOMEM;
}
- /* This also forces the mapping of COW pages, so our page list
- * will be valid. Please don't remove it...
- */
- memset( entry->virtual, 0, pages << PAGE_SHIFT );
+ bzero( entry->virtual, pages << PAGE_SHIFT );
entry->handle = (unsigned long)entry->virtual;
DRM_DEBUG( "sg alloc handle = %08lx\n", entry->handle );
DRM_DEBUG( "sg alloc virtual = %p\n", entry->virtual );
- for ( i = entry->handle, j = 0 ; j < pages ; i += PAGE_SIZE, j++ ) {
- pgd = pgd_offset_k( i );
- if ( !pgd_present( *pgd ) )
- goto failed;
-
- pmd = pmd_offset( pgd, i );
- if ( !pmd_present( *pmd ) )
- goto failed;
-
- pte = pte_offset( pmd, i );
- if ( !pte_present( *pte ) )
- goto failed;
-
- entry->pagelist[j] = pte_page( *pte );
-
- SetPageReserved( entry->pagelist[j] );
- }
-
request.handle = entry->handle;
- if ( copy_to_user( (drm_scatter_gather_t *)arg,
- &request,
- sizeof(request) ) ) {
- DRM(sg_cleanup)( entry );
- return -EFAULT;
- }
+ DRM_COPY_TO_USER_IOCTL( (drm_scatter_gather_t *)data,
+ request,
+ sizeof(request) );
dev->sg = entry;
@@ -207,29 +166,24 @@ int DRM(sg_alloc)( struct inode *inode, struct file *filp,
return 0;
- failed:
DRM(sg_cleanup)( entry );
- return -ENOMEM;
+ return ENOMEM;
}
-int DRM(sg_free)( struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg )
+int DRM(sg_free)( DRM_IOCTL_ARGS )
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
+ DRM_DEVICE;
drm_scatter_gather_t request;
drm_sg_mem_t *entry;
- if ( copy_from_user( &request,
- (drm_scatter_gather_t *)arg,
- sizeof(request) ) )
- return -EFAULT;
+ DRM_COPY_FROM_USER_IOCTL( request, (drm_scatter_gather_t *)data,
+ sizeof(request) );
entry = dev->sg;
dev->sg = NULL;
if ( !entry || entry->handle != request.handle )
- return -EINVAL;
+ return EINVAL;
DRM_DEBUG( "sg free virtual = %p\n", entry->virtual );
@@ -237,3 +191,16 @@ int DRM(sg_free)( struct inode *inode, struct file *filp,
return 0;
}
+
+#else /* __REALLY_HAVE_SG */
+
+int DRM(sg_alloc)( DRM_IOCTL_ARGS )
+{
+ return DRM_ERR(EINVAL);
+}
+int DRM(sg_free)( DRM_IOCTL_ARGS )
+{
+ return DRM_ERR(EINVAL);
+}
+
+#endif