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Diffstat (limited to 'linux-core/drm_bufs.c')
-rw-r--r--linux-core/drm_bufs.c198
1 files changed, 2 insertions, 196 deletions
diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c
index 16af7bd5..63cfb0d4 100644
--- a/linux-core/drm_bufs.c
+++ b/linux-core/drm_bufs.c
@@ -37,10 +37,6 @@
#define __HAVE_PCI_DMA 0
#endif
-#ifndef __HAVE_SG
-#define __HAVE_SG 0
-#endif
-
#ifndef DRIVER_BUF_PRIV_T
#define DRIVER_BUF_PRIV_T u32
#endif
@@ -107,16 +103,13 @@ int DRM(addmap)( struct inode *inode, struct file *filp,
switch ( map->type ) {
case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER:
-#if !defined(__sparc__) && !defined(__alpha__)
+#ifndef __sparc__
if ( map->offset + map->size < map->offset ||
map->offset < virt_to_phys(high_memory) ) {
DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
return -EINVAL;
}
#endif
-#ifdef __alpha__
- map->offset += dev->hose->mem_space->start;
-#endif
#if __REALLY_HAVE_MTRR
if ( map->type == _DRM_FRAME_BUFFER ||
(map->flags & _DRM_WRITE_COMBINING) ) {
@@ -142,21 +135,10 @@ int DRM(addmap)( struct inode *inode, struct file *filp,
break;
#if __REALLY_HAVE_AGP
case _DRM_AGP:
-#ifdef __alpha__
- map->offset += dev->hose->mem_space->start;
-#endif
map->offset = map->offset + dev->agp->base;
map->mtrr = dev->agp->agp_mtrr; /* for getmap */
break;
#endif
- case _DRM_SCATTER_GATHER:
- if (!dev->sg) {
- DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
- return -EINVAL;
- }
- map->offset = map->offset + dev->sg->handle;
- break;
-
default:
DRM(free)( map, sizeof(*map), DRM_MEM_MAPS );
return -EINVAL;
@@ -255,7 +237,6 @@ int DRM(rmmap)(struct inode *inode, struct file *filp,
vfree(map->handle);
break;
case _DRM_AGP:
- case _DRM_SCATTER_GATHER:
break;
}
DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
@@ -584,159 +565,6 @@ int DRM(addbufs_pci)( struct inode *inode, struct file *filp,
}
#endif /* __HAVE_PCI_DMA */
-#ifdef __HAVE_SG
-int DRM(addbufs_sg)( struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg )
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- drm_device_dma_t *dma = dev->dma;
- drm_buf_desc_t request;
- drm_buf_entry_t *entry;
- drm_buf_t *buf;
- unsigned long offset;
- unsigned long agp_offset;
- int count;
- int order;
- int size;
- int alignment;
- int page_order;
- int total;
- int byte_count;
- int i;
-
- if ( !dma ) return -EINVAL;
-
- if ( copy_from_user( &request, (drm_buf_desc_t *)arg,
- sizeof(request) ) )
- return -EFAULT;
-
- count = request.count;
- order = DRM(order)( request.size );
- size = 1 << order;
-
- alignment = (request.flags & _DRM_PAGE_ALIGN)
- ? PAGE_ALIGN(size) : size;
- page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
- total = PAGE_SIZE << page_order;
-
- byte_count = 0;
- agp_offset = request.agp_start;
-
- DRM_DEBUG( "count: %d\n", count );
- DRM_DEBUG( "order: %d\n", order );
- DRM_DEBUG( "size: %d\n", size );
- DRM_DEBUG( "agp_offset: %ld\n", agp_offset );
- DRM_DEBUG( "alignment: %d\n", alignment );
- DRM_DEBUG( "page_order: %d\n", page_order );
- DRM_DEBUG( "total: %d\n", total );
-
- if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL;
- if ( dev->queue_count ) return -EBUSY; /* Not while in use */
-
- spin_lock( &dev->count_lock );
- if ( dev->buf_use ) {
- spin_unlock( &dev->count_lock );
- return -EBUSY;
- }
- atomic_inc( &dev->buf_alloc );
- spin_unlock( &dev->count_lock );
-
- down( &dev->struct_sem );
- entry = &dma->bufs[order];
- if ( entry->buf_count ) {
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM; /* May only call once for each order */
- }
-
- entry->buflist = DRM(alloc)( count * sizeof(*entry->buflist),
- DRM_MEM_BUFS );
- if ( !entry->buflist ) {
- up( &dev->struct_sem );
- atomic_dec( &dev->buf_alloc );
- return -ENOMEM;
- }
- memset( entry->buflist, 0, count * sizeof(*entry->buflist) );
-
- entry->buf_size = size;
- entry->page_order = page_order;
-
- offset = 0;
-
- while ( entry->buf_count < count ) {
- buf = &entry->buflist[entry->buf_count];
- buf->idx = dma->buf_count + entry->buf_count;
- buf->total = alignment;
- buf->order = order;
- buf->used = 0;
-
- buf->offset = (dma->byte_count + offset);
- buf->bus_address = agp_offset + offset;
- buf->address = (void *)(agp_offset + offset + dev->sg->handle);
- buf->next = NULL;
- buf->waiting = 0;
- buf->pending = 0;
- init_waitqueue_head( &buf->dma_wait );
- buf->pid = 0;
-
- buf->dev_priv_size = sizeof(DRIVER_BUF_PRIV_T);
- buf->dev_private = DRM(alloc)( sizeof(DRIVER_BUF_PRIV_T),
- DRM_MEM_BUFS );
- memset( buf->dev_private, 0, buf->dev_priv_size );
-
-#if __HAVE_DMA_HISTOGRAM
- buf->time_queued = 0;
- buf->time_dispatched = 0;
- buf->time_completed = 0;
- buf->time_freed = 0;
-#endif
- DRM_DEBUG( "buffer %d @ %p\n",
- entry->buf_count, buf->address );
-
- offset += alignment;
- entry->buf_count++;
- byte_count += PAGE_SIZE << page_order;
- }
-
- DRM_DEBUG( "byte_count: %d\n", byte_count );
-
- dma->buflist = DRM(realloc)( dma->buflist,
- dma->buf_count * sizeof(*dma->buflist),
- (dma->buf_count + entry->buf_count)
- * sizeof(*dma->buflist),
- DRM_MEM_BUFS );
- for ( i = 0 ; i < entry->buf_count ; i++ ) {
- dma->buflist[i + dma->buf_count] = &entry->buflist[i];
- }
-
- dma->buf_count += entry->buf_count;
- dma->byte_count += byte_count;
-
- DRM_DEBUG( "dma->buf_count : %d\n", dma->buf_count );
- DRM_DEBUG( "entry->buf_count : %d\n", entry->buf_count );
-
-#if __HAVE_DMA_FREELIST
- DRM(freelist_create)( &entry->freelist, entry->buf_count );
- for ( i = 0 ; i < entry->buf_count ; i++ ) {
- DRM(freelist_put)( dev, &entry->freelist, &entry->buflist[i] );
- }
-#endif
- up( &dev->struct_sem );
-
- request.count = entry->buf_count;
- request.size = size;
-
- if ( copy_to_user( (drm_buf_desc_t *)arg, &request, sizeof(request) ) )
- return -EFAULT;
-
- dma->flags = _DRM_DMA_USE_SG;
-
- atomic_dec( &dev->buf_alloc );
- return 0;
-}
-#endif /* __HAVE_SG */
-
int DRM(addbufs)( struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg )
{
@@ -751,11 +579,6 @@ int DRM(addbufs)( struct inode *inode, struct file *filp,
return DRM(addbufs_agp)( inode, filp, cmd, arg );
else
#endif
-#if __HAVE_SG
- if ( request.flags & _DRM_SG_BUFFER )
- return DRM(addbufs_sg)( inode, filp, cmd, arg );
- else
-#endif
#if __HAVE_PCI_DMA
return DRM(addbufs_pci)( inode, filp, cmd, arg );
#else
@@ -937,8 +760,7 @@ int DRM(mapbufs)( struct inode *inode, struct file *filp,
return -EFAULT;
if ( request.count >= dma->buf_count ) {
- if ( (__HAVE_AGP && (dma->flags & _DRM_DMA_USE_AGP)) ||
- (__HAVE_SG && (dma->flags & _DRM_DMA_USE_SG)) ) {
+ if ( __HAVE_AGP && (dma->flags & _DRM_DMA_USE_AGP) ) {
drm_map_t *map = DRIVER_AGP_BUFFERS_MAP( dev );
if ( !map ) {
@@ -946,34 +768,18 @@ int DRM(mapbufs)( struct inode *inode, struct file *filp,
goto done;
}
-#if LINUX_VERSION_CODE <= 0x020402
down( &current->mm->mmap_sem );
-#else
- down_write( &current->mm->mmap_sem );
-#endif
virtual = do_mmap( filp, 0, map->size,
PROT_READ | PROT_WRITE,
MAP_SHARED,
(unsigned long)map->offset );
-#if LINUX_VERSION_CODE <= 0x020402
up( &current->mm->mmap_sem );
-#else
- up_write( &current->mm->mmap_sem );
-#endif
} else {
-#if LINUX_VERSION_CODE <= 0x020402
down( &current->mm->mmap_sem );
-#else
- down_write( &current->mm->mmap_sem );
-#endif
virtual = do_mmap( filp, 0, dma->byte_count,
PROT_READ | PROT_WRITE,
MAP_SHARED, 0 );
-#if LINUX_VERSION_CODE <= 0x020402
up( &current->mm->mmap_sem );
-#else
- up_write( &current->mm->mmap_sem );
-#endif
}
if ( virtual > -1024UL ) {
/* Real error */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 05:46:54 +0000