* type. Adds the map to the map list drm_device::maplist. Adds MTRR's where
* applicable and if supported by the kernel.
*/
-int drm_addmap( struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg )
+int drm_addmap(drm_device_t * dev, unsigned int offset,
+ unsigned int size, drm_map_type_t type,
+ drm_map_flags_t flags, drm_local_map_t ** map_ptr)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
drm_map_t *map;
- drm_map_t __user *argp = (void __user *)arg;
drm_map_list_t *list;
-
- if ( !(filp->f_mode & 3) ) return -EACCES; /* Require read/write */
+ drm_dma_handle_t *dmah;
map = drm_alloc( sizeof(*map), DRM_MEM_MAPS );
if ( !map )
return -ENOMEM;
- if ( copy_from_user( map, argp, sizeof(*map) ) ) {
- drm_free( map, sizeof(*map), DRM_MEM_MAPS );
- return -EFAULT;
- }
+ map->offset = offset;
+ map->size = size;
+ map->flags = flags;
+ map->type = type;
/* Only allow shared memory to be removable since we only keep enough
* book keeping information about shared memory to allow for removal
}
map->offset += dev->sg->handle;
break;
-
+ case _DRM_CONSISTENT:
+ /* dma_addr_t is 64bit on i386 with CONFIG_HIGHMEM64G,
+ * As we're limiting the address to 2^32-1 (or less),
+ * casting it down to 32 bits is no problem, but we
+ * need to point to a 64bit variable first. */
+ dmah = drm_pci_alloc(dev, map->size, map->size, 0xffffffffUL);
+ if (!dmah) {
+ drm_free(map, sizeof(*map), DRM_MEM_MAPS);
+ return -ENOMEM;
+ }
+ map->handle = dmah->vaddr;
+ map->offset = (unsigned long)dmah->busaddr;
+ kfree(dmah);
+ break;
default:
drm_free( map, sizeof(*map), DRM_MEM_MAPS );
return -EINVAL;
#endif
up(&dev->struct_sem);
- if ( copy_to_user( argp, map, sizeof(*map) ) )
+ *map_ptr = map;
+ return 0;
+}
+EXPORT_SYMBOL(drm_addmap);
+
+int drm_addmap_ioctl(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->head->dev;
+ drm_map_t map;
+ drm_map_t *map_ptr;
+ drm_map_t __user *argp = (void __user *)arg;
+ int err;
+
+ if (!(filp->f_mode & 3))
+ return -EACCES; /* Require read/write */
+
+ if (copy_from_user(& map, argp, sizeof(map))) {
return -EFAULT;
- if (copy_to_user(&argp->handle, &map->offset, sizeof(map->offset)))
+ }
+
+ err = drm_addmap( dev, map.offset, map.size, map.type, map.flags,
+ &map_ptr );
+
+ if (err) {
+ return err;
+ }
+
+ if (copy_to_user(argp, map_ptr, sizeof(*map_ptr)))
return -EFAULT;
+ if (map_ptr->type != _DRM_SHM) {
+ if (copy_to_user(&argp->handle, &map_ptr->offset,
+ sizeof(map_ptr->offset)))
+ return -EFAULT;
+ }
return 0;
}
* its being used, and free any associate resource (such as MTRR's) if it's not
* being on use.
*
- * \sa addmap().
+ * \sa drm_addmap
*/
-int drm_rmmap(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_rmmap(drm_device_t *dev, void *handle)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
struct list_head *list;
drm_map_list_t *r_list = NULL;
drm_vma_entry_t *pt, *prev;
drm_map_t *map;
- drm_map_t request;
int found_maps = 0;
- if (copy_from_user(&request, (drm_map_t __user *)arg,
- sizeof(request))) {
- return -EFAULT;
- }
-
down(&dev->struct_sem);
list = &dev->maplist->head;
list_for_each(list, &dev->maplist->head) {
r_list = list_entry(list, drm_map_list_t, head);
if(r_list->map &&
- r_list->map->offset == (unsigned long) request.handle &&
+ r_list->map->handle == handle &&
r_list->map->flags & _DRM_REMOVABLE) break;
}
}
if(!found_maps) {
+ drm_dma_handle_t dmah;
+
switch (map->type) {
case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER:
case _DRM_AGP:
case _DRM_SCATTER_GATHER:
break;
+ case _DRM_CONSISTENT:
+ dmah.vaddr = map->handle;
+ dmah.busaddr = map->offset;
+ dmah.size = map->size;
+ __drm_pci_free(dev, &dmah);
+ break;
}
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
}
up(&dev->struct_sem);
return 0;
}
+EXPORT_SYMBOL(drm_rmmap);
+
+int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->head->dev;
+ drm_map_t request;
+
+ if (copy_from_user(&request, (drm_map_t __user *)arg, sizeof(request))) {
+ return -EFAULT;
+ }
+
+ return drm_rmmap(dev, request.handle);
+}
/**
* Cleanup after an error on one of the addbufs() functions.
#if __OS_HAS_AGP
/**
- * Add AGP buffers for DMA transfers (ioctl).
+ * Add AGP buffers for DMA transfers.
*
- * \param inode device inode.
- * \param filp file pointer.
- * \param cmd command.
- * \param arg pointer to a drm_buf_desc_t request.
+ * \param dev drm_device_t to which the buffers are to be added.
+ * \param request pointer to a drm_buf_desc_t describing the request.
* \return zero on success or a negative number on failure.
*
* After some sanity checks creates a drm_buf structure for each buffer and
* reallocates the buffer list of the same size order to accommodate the new
* buffers.
*/
-int drm_addbufs_agp( struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg )
+int drm_addbufs_agp(drm_device_t *dev, drm_buf_desc_t *request)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->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;
int byte_count;
int i;
drm_buf_t **temp_buflist;
- drm_buf_desc_t __user *argp = (void __user *)arg;
if ( !dma ) return -EINVAL;
- if ( copy_from_user( &request, argp,
- sizeof(request) ) )
- return -EFAULT;
-
- count = request.count;
- order = drm_order( request.size );
+ count = request->count;
+ order = drm_order(request->size);
size = 1 << order;
- alignment = (request.flags & _DRM_PAGE_ALIGN)
+ 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 = dev->agp->base + request.agp_start;
+ agp_offset = dev->agp->base + request->agp_start;
DRM_DEBUG( "count: %d\n", count );
DRM_DEBUG( "order: %d\n", order );
up( &dev->struct_sem );
- request.count = entry->buf_count;
- request.size = size;
-
- if ( copy_to_user( argp, &request, sizeof(request) ) )
- return -EFAULT;
+ request->count = entry->buf_count;
+ request->size = size;
dma->flags = _DRM_DMA_USE_AGP;
atomic_dec( &dev->buf_alloc );
return 0;
}
+EXPORT_SYMBOL(drm_addbufs_agp);
#endif /* __OS_HAS_AGP */
-int drm_addbufs_pci( struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg )
+int drm_addbufs_pci(drm_device_t *dev, drm_buf_desc_t *request)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
drm_device_dma_t *dma = dev->dma;
- drm_buf_desc_t request;
int count;
int order;
int size;
int page_count;
unsigned long *temp_pagelist;
drm_buf_t **temp_buflist;
- drm_buf_desc_t __user *argp = (void __user *)arg;
if (!drm_core_check_feature(dev, DRIVER_PCI_DMA)) return -EINVAL;
if ( !dma ) return -EINVAL;
- if ( copy_from_user( &request, argp, sizeof(request) ) )
- return -EFAULT;
-
- count = request.count;
- order = drm_order( request.size );
+ count = request->count;
+ order = drm_order(request->size);
size = 1 << order;
DRM_DEBUG( "count=%d, size=%d (%d), order=%d, queue_count=%d\n",
- request.count, request.size, size,
+ request->count, request->size, size,
order, dev->queue_count );
if ( order < DRM_MIN_ORDER || order > DRM_MAX_ORDER ) return -EINVAL;
if ( dev->queue_count ) return -EBUSY; /* Not while in use */
- alignment = (request.flags & _DRM_PAGE_ALIGN)
+ 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;
up( &dev->struct_sem );
- request.count = entry->buf_count;
- request.size = size;
-
- if ( copy_to_user( argp, &request, sizeof(request) ) )
- return -EFAULT;
+ request->count = entry->buf_count;
+ request->size = size;
atomic_dec( &dev->buf_alloc );
return 0;
}
+EXPORT_SYMBOL(drm_addbufs_pci);
-int drm_addbufs_sg( struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg )
+static int drm_addbufs_sg(drm_device_t *dev, drm_buf_desc_t *request)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
drm_device_dma_t *dma = dev->dma;
- drm_buf_desc_t __user *argp = (void __user *)arg;
- drm_buf_desc_t request;
drm_buf_entry_t *entry;
drm_buf_t *buf;
unsigned long offset;
if ( !dma ) return -EINVAL;
- if ( copy_from_user( &request, argp, sizeof(request) ) )
- return -EFAULT;
-
- count = request.count;
- order = drm_order( request.size );
+ count = request->count;
+ order = drm_order(request->size);
size = 1 << order;
- alignment = (request.flags & _DRM_PAGE_ALIGN)
+ 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;
+ agp_offset = request->agp_start;
DRM_DEBUG( "count: %d\n", count );
DRM_DEBUG( "order: %d\n", order );
up( &dev->struct_sem );
- request.count = entry->buf_count;
- request.size = size;
-
- if ( copy_to_user( argp, &request, sizeof(request) ) )
- return -EFAULT;
+ request->count = entry->buf_count;
+ request->size = size;
dma->flags = _DRM_DMA_USE_SG;
return 0;
}
+int drm_addbufs_fb(drm_device_t *dev, drm_buf_desc_t *request)
+{
+ drm_device_dma_t *dma = dev->dma;
+ 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;
+ drm_buf_t **temp_buflist;
+
+ if (!drm_core_check_feature(dev, DRIVER_FB_DMA))
+ return -EINVAL;
+
+ if (!dma)
+ return -EINVAL;
+
+ 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: %lu\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 */
+ }
+
+ if (count < 0 || count > 4096) {
+ up(&dev->struct_sem);
+ atomic_dec(&dev->buf_alloc);
+ return -EINVAL;
+ }
+
+ 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);
+ buf->next = NULL;
+ buf->waiting = 0;
+ buf->pending = 0;
+ init_waitqueue_head(&buf->dma_wait);
+ buf->filp = NULL;
+
+ buf->dev_priv_size = dev->driver->dev_priv_size;
+ buf->dev_private = drm_alloc(buf->dev_priv_size, DRM_MEM_BUFS);
+ if (!buf->dev_private) {
+ /* Set count correctly so we free the proper amount. */
+ entry->buf_count = count;
+ drm_cleanup_buf_error(dev, entry);
+ up(&dev->struct_sem);
+ atomic_dec(&dev->buf_alloc);
+ return -ENOMEM;
+ }
+ memset(buf->dev_private, 0, buf->dev_priv_size);
+
+ 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);
+
+ temp_buflist = drm_realloc(dma->buflist,
+ dma->buf_count * sizeof(*dma->buflist),
+ (dma->buf_count + entry->buf_count)
+ * sizeof(*dma->buflist), DRM_MEM_BUFS);
+ if (!temp_buflist) {
+ /* Free the entry because it isn't valid */
+ drm_cleanup_buf_error(dev, entry);
+ up(&dev->struct_sem);
+ atomic_dec(&dev->buf_alloc);
+ return -ENOMEM;
+ }
+ dma->buflist = temp_buflist;
+
+ 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);
+
+ up(&dev->struct_sem);
+
+ request->count = entry->buf_count;
+ request->size = size;
+
+ dma->flags = _DRM_DMA_USE_FB;
+
+ atomic_dec(&dev->buf_alloc);
+ return 0;
+}
+
/**
* Add buffers for DMA transfers (ioctl).
*
drm_buf_desc_t request;
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
+ int ret;
if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA))
return -EINVAL;
#if __OS_HAS_AGP
if ( request.flags & _DRM_AGP_BUFFER )
- return drm_addbufs_agp( inode, filp, cmd, arg );
+ ret=drm_addbufs_agp(dev, &request);
else
#endif
if ( request.flags & _DRM_SG_BUFFER )
- return drm_addbufs_sg( inode, filp, cmd, arg );
+ ret=drm_addbufs_sg(dev, &request);
+ else if ( request.flags & _DRM_FB_BUFFER)
+ ret=drm_addbufs_fb(dev, &request);
else
- return drm_addbufs_pci( inode, filp, cmd, arg );
+ ret=drm_addbufs_pci(dev, &request);
+
+ if (ret==0) {
+ if (copy_to_user((void __user *)arg, &request,
+ sizeof(request))) {
+ ret = -EFAULT;
+ }
+ }
+ return ret;
}
return -EFAULT;
if ( request.count >= dma->buf_count ) {
- if ((drm_core_has_AGP(dev) && (dma->flags & _DRM_DMA_USE_AGP)) ||
- (drm_core_check_feature(dev, DRIVER_SG) && (dma->flags & _DRM_DMA_USE_SG)) ) {
+ if ((drm_core_has_AGP(dev) && (dma->flags & _DRM_DMA_USE_AGP))
+ || (drm_core_check_feature(dev, DRIVER_SG)
+ && (dma->flags & _DRM_DMA_USE_SG))
+ || (drm_core_check_feature(dev, DRIVER_FB_DMA)
+ && (dma->flags & _DRM_DMA_USE_FB))) {
drm_map_t *map = dev->agp_buffer_map;
if ( !map ) {