42 int fw_iso_buffer_alloc(struct fw_iso_buffer *buffer, int page_count)  in fw_iso_buffer_alloc()  argument
46 	buffer->page_count = 0;  in fw_iso_buffer_alloc()
47 	buffer->page_count_mapped = 0;  in fw_iso_buffer_alloc()
48 	buffer->pages = kmalloc(page_count * sizeof(buffer->pages[0]),  in fw_iso_buffer_alloc()
50 	if (buffer->pages == NULL)  in fw_iso_buffer_alloc()
54 		buffer->pages[i] = alloc_page(GFP_KERNEL | GFP_DMA32 | __GFP_ZERO);  in fw_iso_buffer_alloc()
55 		if (buffer->pages[i] == NULL)  in fw_iso_buffer_alloc()
58 	buffer->page_count = i;  in fw_iso_buffer_alloc()
60 		fw_iso_buffer_destroy(buffer, NULL);  in fw_iso_buffer_alloc()
67 int fw_iso_buffer_map_dma(struct fw_iso_buffer *buffer, struct fw_card *card,  in fw_iso_buffer_map_dma()  argument
73 	buffer->direction = direction;  in fw_iso_buffer_map_dma()
75 	for (i = 0; i < buffer->page_count; i++) {  in fw_iso_buffer_map_dma()
76 		address = dma_map_page(card->device, buffer->pages[i],  in fw_iso_buffer_map_dma()
81 		set_page_private(buffer->pages[i], address);  in fw_iso_buffer_map_dma()
83 	buffer->page_count_mapped = i;  in fw_iso_buffer_map_dma()
84 	if (i < buffer->page_count)  in fw_iso_buffer_map_dma()
90 int fw_iso_buffer_init(struct fw_iso_buffer *buffer, struct fw_card *card,  in fw_iso_buffer_init()  argument
95 	ret = fw_iso_buffer_alloc(buffer, page_count);  in fw_iso_buffer_init()
99 	ret = fw_iso_buffer_map_dma(buffer, card, direction);  in fw_iso_buffer_init()
101 		fw_iso_buffer_destroy(buffer, card);  in fw_iso_buffer_init()
107 int fw_iso_buffer_map_vma(struct fw_iso_buffer *buffer,  in fw_iso_buffer_map_vma()  argument
114 	for (i = 0; i < buffer->page_count; i++) {  in fw_iso_buffer_map_vma()
115 		err = vm_insert_page(vma, uaddr, buffer->pages[i]);  in fw_iso_buffer_map_vma()
125 void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer,  in fw_iso_buffer_destroy()  argument
131 	for (i = 0; i < buffer->page_count_mapped; i++) {  in fw_iso_buffer_destroy()
132 		address = page_private(buffer->pages[i]);  in fw_iso_buffer_destroy()
134 			       PAGE_SIZE, buffer->direction);  in fw_iso_buffer_destroy()
136 	for (i = 0; i < buffer->page_count; i++)  in fw_iso_buffer_destroy()
137 		__free_page(buffer->pages[i]);  in fw_iso_buffer_destroy()
139 	kfree(buffer->pages);  in fw_iso_buffer_destroy()
140 	buffer->pages = NULL;  in fw_iso_buffer_destroy()
141 	buffer->page_count = 0;  in fw_iso_buffer_destroy()
142 	buffer->page_count_mapped = 0;  in fw_iso_buffer_destroy()
147 size_t fw_iso_buffer_lookup(struct fw_iso_buffer *buffer, dma_addr_t completed)  in fw_iso_buffer_lookup()  argument
153 	for (i = 0; i < buffer->page_count; i++) {  in fw_iso_buffer_lookup()
154 		address = page_private(buffer->pages[i]);  in fw_iso_buffer_lookup()
206 			 struct fw_iso_buffer *buffer,  in fw_iso_context_queue()  argument
209 	return ctx->card->driver->queue_iso(ctx, packet, buffer, payload);  in fw_iso_context_queue()