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path: root/drivers/media/video
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-rw-r--r--drivers/media/video/videobuf-dma-sg.c62
1 files changed, 4 insertions, 58 deletions
diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c
index 05dd38343fa3..a38efe10feb4 100644
--- a/drivers/media/video/videobuf-dma-sg.c
+++ b/drivers/media/video/videobuf-dma-sg.c
@@ -220,7 +220,6 @@ int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
220int videobuf_dma_map(struct videobuf_queue* q,struct videobuf_dmabuf *dma) 220int videobuf_dma_map(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
221{ 221{
222 void *dev=q->dev; 222 void *dev=q->dev;
223 struct videobuf_dma_sg_ops *ops=q->priv_ops;
224 223
225 MAGIC_CHECK(dma->magic,MAGIC_DMABUF); 224 MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
226 BUG_ON(0 == dma->nr_pages); 225 BUG_ON(0 == dma->nr_pages);
@@ -247,10 +246,8 @@ int videobuf_dma_map(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
247 return -ENOMEM; 246 return -ENOMEM;
248 } 247 }
249 if (!dma->bus_addr) { 248 if (!dma->bus_addr) {
250 if (ops && ops->vb_map_sg) { 249 dma->sglen = pci_map_sg(dev,dma->sglist,
251 dma->sglen = ops->vb_map_sg(dev,dma->sglist,
252 dma->nr_pages, dma->direction); 250 dma->nr_pages, dma->direction);
253 }
254 if (0 == dma->sglen) { 251 if (0 == dma->sglen) {
255 printk(KERN_WARNING 252 printk(KERN_WARNING
256 "%s: videobuf_map_sg failed\n",__FUNCTION__); 253 "%s: videobuf_map_sg failed\n",__FUNCTION__);
@@ -266,30 +263,24 @@ int videobuf_dma_map(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
266int videobuf_dma_sync(struct videobuf_queue *q,struct videobuf_dmabuf *dma) 263int videobuf_dma_sync(struct videobuf_queue *q,struct videobuf_dmabuf *dma)
267{ 264{
268 void *dev=q->dev; 265 void *dev=q->dev;
269 struct videobuf_dma_sg_ops *ops=q->priv_ops;
270 266
271 MAGIC_CHECK(dma->magic,MAGIC_DMABUF); 267 MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
272 BUG_ON(!dma->sglen); 268 BUG_ON(!dma->sglen);
273 269
274 if (!dma->bus_addr && ops && ops->vb_dma_sync_sg) 270 pci_dma_sync_sg_for_cpu (dev,dma->sglist,dma->nr_pages,dma->direction);
275 ops->vb_dma_sync_sg(dev,dma->sglist,dma->nr_pages,
276 dma->direction);
277
278 return 0; 271 return 0;
279} 272}
280 273
281int videobuf_dma_unmap(struct videobuf_queue* q,struct videobuf_dmabuf *dma) 274int videobuf_dma_unmap(struct videobuf_queue* q,struct videobuf_dmabuf *dma)
282{ 275{
283 void *dev=q->dev; 276 void *dev=q->dev;
284 struct videobuf_dma_sg_ops *ops=q->priv_ops;
285 277
286 MAGIC_CHECK(dma->magic,MAGIC_DMABUF); 278 MAGIC_CHECK(dma->magic,MAGIC_DMABUF);
287 if (!dma->sglen) 279 if (!dma->sglen)
288 return 0; 280 return 0;
289 281
290 if (!dma->bus_addr && ops && ops->vb_unmap_sg) 282 pci_unmap_sg (dev,dma->sglist,dma->nr_pages,dma->direction);
291 ops->vb_unmap_sg(dev,dma->sglist,dma->nr_pages, 283
292 dma->direction);
293 kfree(dma->sglist); 284 kfree(dma->sglist);
294 dma->sglist = NULL; 285 dma->sglist = NULL;
295 dma->sglen = 0; 286 dma->sglen = 0;
@@ -325,12 +316,8 @@ int videobuf_dma_free(struct videobuf_dmabuf *dma)
325int videobuf_pci_dma_map(struct pci_dev *pci,struct videobuf_dmabuf *dma) 316int videobuf_pci_dma_map(struct pci_dev *pci,struct videobuf_dmabuf *dma)
326{ 317{
327 struct videobuf_queue q; 318 struct videobuf_queue q;
328 struct videobuf_dma_sg_ops qops;
329 319
330 q.dev=pci; 320 q.dev=pci;
331 qops.vb_map_sg=(vb_map_sg_t *)pci_map_sg;
332 qops.vb_unmap_sg=(vb_map_sg_t *)pci_unmap_sg;
333 q.priv_ops = &qops;
334 321
335 return (videobuf_dma_map(&q,dma)); 322 return (videobuf_dma_map(&q,dma));
336} 323}
@@ -338,12 +325,8 @@ int videobuf_pci_dma_map(struct pci_dev *pci,struct videobuf_dmabuf *dma)
338int videobuf_pci_dma_unmap(struct pci_dev *pci,struct videobuf_dmabuf *dma) 325int videobuf_pci_dma_unmap(struct pci_dev *pci,struct videobuf_dmabuf *dma)
339{ 326{
340 struct videobuf_queue q; 327 struct videobuf_queue q;
341 struct videobuf_dma_sg_ops qops;
342 328
343 q.dev=pci; 329 q.dev=pci;
344 qops.vb_map_sg=(vb_map_sg_t *)pci_map_sg;
345 qops.vb_unmap_sg=(vb_map_sg_t *)pci_unmap_sg;
346 q.priv_ops = &qops;
347 330
348 return (videobuf_dma_unmap(&q,dma)); 331 return (videobuf_dma_unmap(&q,dma));
349} 332}
@@ -712,46 +695,10 @@ void videobuf_queue_pci_init(struct videobuf_queue* q,
712 unsigned int msize, 695 unsigned int msize,
713 void *priv) 696 void *priv)
714{ 697{
715 struct videobuf_dma_sg_ops *priv_ops;
716
717 videobuf_queue_init(q, ops, dev, irqlock, type, field, msize, priv); 698 videobuf_queue_init(q, ops, dev, irqlock, type, field, msize, priv);
718 q->int_ops=&pci_ops; 699 q->int_ops=&pci_ops;
719
720 /* FIXME: the code bellow should be removed after having a proper
721 * memory allocation method for vivi and tm6000
722 */
723 q->priv_ops= kzalloc(sizeof(struct videobuf_dma_sg_ops), GFP_KERNEL);
724 BUG_ON (!q->priv_ops);
725
726 priv_ops=q->priv_ops;
727
728 /* Sets default methods for handling Scatter Gather mapping */
729 priv_ops->vb_map_sg=(vb_map_sg_t *)pci_map_sg;
730 priv_ops->vb_unmap_sg=(vb_map_sg_t *)pci_unmap_sg;
731 priv_ops->vb_dma_sync_sg=(vb_map_sg_t *)pci_dma_sync_sg_for_cpu;
732} 700}
733 701
734void videobuf_set_pci_ops (struct videobuf_queue* q,
735 struct videobuf_dma_sg_ops *ops)
736{
737 kfree (q->priv_ops);
738
739 q->priv_ops=ops;
740
741 if (!ops)
742 return;
743
744 /* If not specified, defaults to PCI map sg */
745 if (!ops->vb_map_sg)
746 ops->vb_map_sg=(vb_map_sg_t *)pci_map_sg;
747
748 if (!ops->vb_dma_sync_sg)
749 ops->vb_dma_sync_sg=(vb_map_sg_t *)pci_dma_sync_sg_for_cpu;
750 if (!ops->vb_unmap_sg)
751 ops->vb_unmap_sg=(vb_map_sg_t *)pci_unmap_sg;
752}
753
754
755/* --------------------------------------------------------------------- */ 702/* --------------------------------------------------------------------- */
756 703
757EXPORT_SYMBOL_GPL(videobuf_vmalloc_to_sg); 704EXPORT_SYMBOL_GPL(videobuf_vmalloc_to_sg);
@@ -771,7 +718,6 @@ EXPORT_SYMBOL_GPL(videobuf_pci_dma_unmap);
771EXPORT_SYMBOL_GPL(videobuf_pci_alloc); 718EXPORT_SYMBOL_GPL(videobuf_pci_alloc);
772 719
773EXPORT_SYMBOL_GPL(videobuf_queue_pci_init); 720EXPORT_SYMBOL_GPL(videobuf_queue_pci_init);
774EXPORT_SYMBOL_GPL(videobuf_set_pci_ops);
775 721
776/* 722/*
777 * Local variables: 723 * Local variables: