16 	struct usb_data_stream *stream = urb->context;  in usb_urb_complete()  local
47 …	stream->complete(stream, b + urb->iso_frame_desc[i].offset, urb->iso_frame_desc[i].actual_length);  in usb_urb_complete()
56 				stream->complete(stream, b, urb->actual_length);  in usb_urb_complete()
65 int usb_urb_kill(struct usb_data_stream *stream)  in usb_urb_kill()  argument
68 	for (i = 0; i < stream->urbs_submitted; i++) {  in usb_urb_kill()
72 		usb_kill_urb(stream->urb_list[i]);  in usb_urb_kill()
74 	stream->urbs_submitted = 0;  in usb_urb_kill()
78 int usb_urb_submit(struct usb_data_stream *stream)  in usb_urb_submit()  argument
81 	for (i = 0; i < stream->urbs_initialized; i++) {  in usb_urb_submit()
83 		if ((ret = usb_submit_urb(stream->urb_list[i],GFP_ATOMIC))) {  in usb_urb_submit()
85 			usb_urb_kill(stream);  in usb_urb_submit()
88 		stream->urbs_submitted++;  in usb_urb_submit()
93 static int usb_free_stream_buffers(struct usb_data_stream *stream)  in usb_free_stream_buffers()  argument
95 	if (stream->state & USB_STATE_URB_BUF) {  in usb_free_stream_buffers()
96 		while (stream->buf_num) {  in usb_free_stream_buffers()
97 			stream->buf_num--;  in usb_free_stream_buffers()
98 			deb_mem("freeing buffer %d\n",stream->buf_num);  in usb_free_stream_buffers()
99 			usb_free_coherent(stream->udev, stream->buf_size,  in usb_free_stream_buffers()
100 					  stream->buf_list[stream->buf_num],  in usb_free_stream_buffers()
101 					  stream->dma_addr[stream->buf_num]);  in usb_free_stream_buffers()
105 	stream->state &= ~USB_STATE_URB_BUF;  in usb_free_stream_buffers()
110 static int usb_allocate_stream_buffers(struct usb_data_stream *stream, int num, unsigned long size)  in usb_allocate_stream_buffers()  argument
112 	stream->buf_num = 0;  in usb_allocate_stream_buffers()
113 	stream->buf_size = size;  in usb_allocate_stream_buffers()
117 	for (stream->buf_num = 0; stream->buf_num < num; stream->buf_num++) {  in usb_allocate_stream_buffers()
118 		deb_mem("allocating buffer %d\n",stream->buf_num);  in usb_allocate_stream_buffers()
119 		if (( stream->buf_list[stream->buf_num] =  in usb_allocate_stream_buffers()
120 					usb_alloc_coherent(stream->udev, size, GFP_ATOMIC,  in usb_allocate_stream_buffers()
121 					&stream->dma_addr[stream->buf_num]) ) == NULL) {  in usb_allocate_stream_buffers()
123 			usb_free_stream_buffers(stream);  in usb_allocate_stream_buffers()
127 			stream->buf_num,  in usb_allocate_stream_buffers()
128 stream->buf_list[stream->buf_num], (long long)stream->dma_addr[stream->buf_num]);  in usb_allocate_stream_buffers()
129 		memset(stream->buf_list[stream->buf_num],0,size);  in usb_allocate_stream_buffers()
130 		stream->state |= USB_STATE_URB_BUF;  in usb_allocate_stream_buffers()
137 static int usb_bulk_urb_init(struct usb_data_stream *stream)  in usb_bulk_urb_init()  argument
141 	if ((i = usb_allocate_stream_buffers(stream,stream->props.count,  in usb_bulk_urb_init()
142 					stream->props.u.bulk.buffersize)) < 0)  in usb_bulk_urb_init()
146 	for (i = 0; i < stream->props.count; i++) {  in usb_bulk_urb_init()
147 		stream->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);  in usb_bulk_urb_init()
148 		if (!stream->urb_list[i]) {  in usb_bulk_urb_init()
151 				usb_free_urb(stream->urb_list[j]);  in usb_bulk_urb_init()
154 		usb_fill_bulk_urb( stream->urb_list[i], stream->udev,  in usb_bulk_urb_init()
155 				usb_rcvbulkpipe(stream->udev,stream->props.endpoint),  in usb_bulk_urb_init()
156 				stream->buf_list[i],  in usb_bulk_urb_init()
157 				stream->props.u.bulk.buffersize,  in usb_bulk_urb_init()
158 				usb_urb_complete, stream);  in usb_bulk_urb_init()
160 		stream->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;  in usb_bulk_urb_init()
161 		stream->urb_list[i]->transfer_dma = stream->dma_addr[i];  in usb_bulk_urb_init()
162 		stream->urbs_initialized++;  in usb_bulk_urb_init()
167 static int usb_isoc_urb_init(struct usb_data_stream *stream)  in usb_isoc_urb_init()  argument
171 	if ((i = usb_allocate_stream_buffers(stream,stream->props.count,  in usb_isoc_urb_init()
172 					stream->props.u.isoc.framesize*stream->props.u.isoc.framesperurb)) < 0)  in usb_isoc_urb_init()
176 	for (i = 0; i < stream->props.count; i++) {  in usb_isoc_urb_init()
180 		stream->urb_list[i] = usb_alloc_urb(stream->props.u.isoc.framesperurb, GFP_ATOMIC);  in usb_isoc_urb_init()
181 		if (!stream->urb_list[i]) {  in usb_isoc_urb_init()
184 				usb_free_urb(stream->urb_list[j]);  in usb_isoc_urb_init()
188 		urb = stream->urb_list[i];  in usb_isoc_urb_init()
190 		urb->dev = stream->udev;  in usb_isoc_urb_init()
191 		urb->context = stream;  in usb_isoc_urb_init()
193 		urb->pipe = usb_rcvisocpipe(stream->udev,stream->props.endpoint);  in usb_isoc_urb_init()
195 		urb->interval = stream->props.u.isoc.interval;  in usb_isoc_urb_init()
196 		urb->number_of_packets = stream->props.u.isoc.framesperurb;  in usb_isoc_urb_init()
197 		urb->transfer_buffer_length = stream->buf_size;  in usb_isoc_urb_init()
198 		urb->transfer_buffer = stream->buf_list[i];  in usb_isoc_urb_init()
199 		urb->transfer_dma = stream->dma_addr[i];  in usb_isoc_urb_init()
201 		for (j = 0; j < stream->props.u.isoc.framesperurb; j++) {  in usb_isoc_urb_init()
203 			urb->iso_frame_desc[j].length = stream->props.u.isoc.framesize;  in usb_isoc_urb_init()
204 			frame_offset += stream->props.u.isoc.framesize;  in usb_isoc_urb_init()
207 		stream->urbs_initialized++;  in usb_isoc_urb_init()
212 int usb_urb_init(struct usb_data_stream *stream, struct usb_data_stream_properties *props)  in usb_urb_init()  argument
214 	if (stream == NULL || props == NULL)  in usb_urb_init()
217 	memcpy(&stream->props, props, sizeof(*props));  in usb_urb_init()
219 	usb_clear_halt(stream->udev,usb_rcvbulkpipe(stream->udev,stream->props.endpoint));  in usb_urb_init()
221 	if (stream->complete == NULL) {  in usb_urb_init()
226 	switch (stream->props.type) {  in usb_urb_init()
228 			return usb_bulk_urb_init(stream);  in usb_urb_init()
230 			return usb_isoc_urb_init(stream);  in usb_urb_init()
237 int usb_urb_exit(struct usb_data_stream *stream)  in usb_urb_exit()  argument
241 	usb_urb_kill(stream);  in usb_urb_exit()
243 	for (i = 0; i < stream->urbs_initialized; i++) {  in usb_urb_exit()
244 		if (stream->urb_list[i] != NULL) {  in usb_urb_exit()
247 			usb_free_urb(stream->urb_list[i]);  in usb_urb_exit()
250 	stream->urbs_initialized = 0;  in usb_urb_exit()
252 	usb_free_stream_buffers(stream);  in usb_urb_exit()