powerpc/powerpc/busdma_machdep.c

149 static void free_bounce_page(bus_dma_tag_t dmat, struct bounce_page *bpage);
879 	struct bounce_page *bpage;
886 	while ((bpage = STAILQ_FIRST(&map->bpages)) != NULL) {
888 		free_bounce_page(dmat, bpage);
895 	struct bounce_page *bpage;
897 	if ((bpage = STAILQ_FIRST(&map->bpages)) != NULL) {
907 			while (bpage != NULL) {
908 				if (bpage->datavaddr != 0)
909 					bcopy((void *)bpage->datavaddr,
910 					      (void *)bpage->vaddr,
911 					      bpage->datacount);
913 					physcopyout(bpage->dataaddr,
914 					    (void *)bpage->vaddr,
915 					    bpage->datacount);
916 				bpage = STAILQ_NEXT(bpage, links);
922 			while (bpage != NULL) {
923 				if (bpage->datavaddr != 0)
924 					bcopy((void *)bpage->vaddr,
925 					      (void *)bpage->datavaddr,
926 					      bpage->datacount);
928 					physcopyin((void *)bpage->vaddr,
929 					    bpage->dataaddr, bpage->datacount);
930 				bpage = STAILQ_NEXT(bpage, links);
1046 		struct bounce_page *bpage;
1048 		bpage = (struct bounce_page *)malloc(sizeof(*bpage), M_DEVBUF,
1051 		if (bpage == NULL)
1053 		bpage->vaddr = (vm_offset_t)contigmalloc(PAGE_SIZE, M_DEVBUF,
1058 		if (bpage->vaddr == 0) {
1059 			free(bpage, M_DEVBUF);
1062 		bpage->busaddr = pmap_kextract(bpage->vaddr);
1064 		STAILQ_INSERT_TAIL(&bz->bounce_page_list, bpage, links);
1099 	struct bounce_page *bpage;
1113 	bpage = STAILQ_FIRST(&bz->bounce_page_list);
1114 	if (bpage == NULL)
1124 		bpage->vaddr |= addr & PAGE_MASK;
1125 		bpage->busaddr |= addr & PAGE_MASK;
1127 	bpage->datavaddr = vaddr;
1128 	bpage->dataaddr = addr;
1129 	bpage->datacount = size;
1130 	STAILQ_INSERT_TAIL(&(map->bpages), bpage, links);
1131 	return (bpage->busaddr);
1135 free_bounce_page(bus_dma_tag_t dmat, struct bounce_page *bpage)
1141 	bpage->datavaddr = 0;
1142 	bpage->datacount = 0;
1149 		bpage->vaddr &= ~PAGE_MASK;
1150 		bpage->busaddr &= ~PAGE_MASK;
1154 	STAILQ_INSERT_HEAD(&bz->bounce_page_list, bpage, links);