17 	struct usb_data_stream *stream = urb->context;  in usb_urb_complete()  local
48 …	stream->complete(stream, b + urb->iso_frame_desc[i].offset, urb->iso_frame_desc[i].actual_length);  in usb_urb_complete()
57 				stream->complete(stream, b, urb->actual_length);  in usb_urb_complete()
66 int usb_urb_kill(struct usb_data_stream *stream)  in usb_urb_kill()  argument
69 	for (i = 0; i < stream->urbs_submitted; i++) {  in usb_urb_kill()
73 		usb_kill_urb(stream->urb_list[i]);  in usb_urb_kill()
75 	stream->urbs_submitted = 0;  in usb_urb_kill()
79 int usb_urb_submit(struct usb_data_stream *stream)  in usb_urb_submit()  argument
82 	for (i = 0; i < stream->urbs_initialized; i++) {  in usb_urb_submit()
84 		if ((ret = usb_submit_urb(stream->urb_list[i],GFP_ATOMIC))) {  in usb_urb_submit()
86 			usb_urb_kill(stream);  in usb_urb_submit()
89 		stream->urbs_submitted++;  in usb_urb_submit()
94 static int usb_free_stream_buffers(struct usb_data_stream *stream)  in usb_free_stream_buffers()  argument
96 	if (stream->state & USB_STATE_URB_BUF) {  in usb_free_stream_buffers()
97 		while (stream->buf_num) {  in usb_free_stream_buffers()
98 			stream->buf_num--;  in usb_free_stream_buffers()
99 			deb_mem("freeing buffer %d\n",stream->buf_num);  in usb_free_stream_buffers()
100 			usb_free_coherent(stream->udev, stream->buf_size,  in usb_free_stream_buffers()
101 					  stream->buf_list[stream->buf_num],  in usb_free_stream_buffers()
102 					  stream->dma_addr[stream->buf_num]);  in usb_free_stream_buffers()
106 	stream->state &= ~USB_STATE_URB_BUF;  in usb_free_stream_buffers()
111 static int usb_allocate_stream_buffers(struct usb_data_stream *stream, int num, unsigned long size)  in usb_allocate_stream_buffers()  argument
113 	stream->buf_num = 0;  in usb_allocate_stream_buffers()
114 	stream->buf_size = size;  in usb_allocate_stream_buffers()
118 	for (stream->buf_num = 0; stream->buf_num < num; stream->buf_num++) {  in usb_allocate_stream_buffers()
119 		deb_mem("allocating buffer %d\n",stream->buf_num);  in usb_allocate_stream_buffers()
120 		if (( stream->buf_list[stream->buf_num] =  in usb_allocate_stream_buffers()
121 					usb_alloc_coherent(stream->udev, size, GFP_KERNEL,  in usb_allocate_stream_buffers()
122 					&stream->dma_addr[stream->buf_num]) ) == NULL) {  in usb_allocate_stream_buffers()
124 			usb_free_stream_buffers(stream);  in usb_allocate_stream_buffers()
128 			stream->buf_num,  in usb_allocate_stream_buffers()
129 stream->buf_list[stream->buf_num], (long long)stream->dma_addr[stream->buf_num]);  in usb_allocate_stream_buffers()
130 		memset(stream->buf_list[stream->buf_num],0,size);  in usb_allocate_stream_buffers()
131 		stream->state |= USB_STATE_URB_BUF;  in usb_allocate_stream_buffers()
138 static int usb_bulk_urb_init(struct usb_data_stream *stream)  in usb_bulk_urb_init()  argument
142 	if ((i = usb_allocate_stream_buffers(stream,stream->props.count,  in usb_bulk_urb_init()
143 					stream->props.u.bulk.buffersize)) < 0)  in usb_bulk_urb_init()
147 	for (i = 0; i < stream->props.count; i++) {  in usb_bulk_urb_init()
148 		stream->urb_list[i] = usb_alloc_urb(0, GFP_KERNEL);  in usb_bulk_urb_init()
149 		if (!stream->urb_list[i]) {  in usb_bulk_urb_init()
152 				usb_free_urb(stream->urb_list[j]);  in usb_bulk_urb_init()
155 		usb_fill_bulk_urb( stream->urb_list[i], stream->udev,  in usb_bulk_urb_init()
156 				usb_rcvbulkpipe(stream->udev,stream->props.endpoint),  in usb_bulk_urb_init()
157 				stream->buf_list[i],  in usb_bulk_urb_init()
158 				stream->props.u.bulk.buffersize,  in usb_bulk_urb_init()
159 				usb_urb_complete, stream);  in usb_bulk_urb_init()
161 		stream->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;  in usb_bulk_urb_init()
162 		stream->urb_list[i]->transfer_dma = stream->dma_addr[i];  in usb_bulk_urb_init()
163 		stream->urbs_initialized++;  in usb_bulk_urb_init()
168 static int usb_isoc_urb_init(struct usb_data_stream *stream)  in usb_isoc_urb_init()  argument
172 	if ((i = usb_allocate_stream_buffers(stream,stream->props.count,  in usb_isoc_urb_init()
173 					stream->props.u.isoc.framesize*stream->props.u.isoc.framesperurb)) < 0)  in usb_isoc_urb_init()
177 	for (i = 0; i < stream->props.count; i++) {  in usb_isoc_urb_init()
181 		stream->urb_list[i] = usb_alloc_urb(stream->props.u.isoc.framesperurb, GFP_KERNEL);  in usb_isoc_urb_init()
182 		if (!stream->urb_list[i]) {  in usb_isoc_urb_init()
185 				usb_free_urb(stream->urb_list[j]);  in usb_isoc_urb_init()
189 		urb = stream->urb_list[i];  in usb_isoc_urb_init()
191 		urb->dev = stream->udev;  in usb_isoc_urb_init()
192 		urb->context = stream;  in usb_isoc_urb_init()
194 		urb->pipe = usb_rcvisocpipe(stream->udev,stream->props.endpoint);  in usb_isoc_urb_init()
196 		urb->interval = stream->props.u.isoc.interval;  in usb_isoc_urb_init()
197 		urb->number_of_packets = stream->props.u.isoc.framesperurb;  in usb_isoc_urb_init()
198 		urb->transfer_buffer_length = stream->buf_size;  in usb_isoc_urb_init()
199 		urb->transfer_buffer = stream->buf_list[i];  in usb_isoc_urb_init()
200 		urb->transfer_dma = stream->dma_addr[i];  in usb_isoc_urb_init()
202 		for (j = 0; j < stream->props.u.isoc.framesperurb; j++) {  in usb_isoc_urb_init()
204 			urb->iso_frame_desc[j].length = stream->props.u.isoc.framesize;  in usb_isoc_urb_init()
205 			frame_offset += stream->props.u.isoc.framesize;  in usb_isoc_urb_init()
208 		stream->urbs_initialized++;  in usb_isoc_urb_init()
213 int usb_urb_init(struct usb_data_stream *stream, struct usb_data_stream_properties *props)  in usb_urb_init()  argument
215 	if (stream == NULL || props == NULL)  in usb_urb_init()
218 	memcpy(&stream->props, props, sizeof(*props));  in usb_urb_init()
220 	usb_clear_halt(stream->udev,usb_rcvbulkpipe(stream->udev,stream->props.endpoint));  in usb_urb_init()
222 	if (stream->complete == NULL) {  in usb_urb_init()
227 	switch (stream->props.type) {  in usb_urb_init()
229 			return usb_bulk_urb_init(stream);  in usb_urb_init()
231 			return usb_isoc_urb_init(stream);  in usb_urb_init()
238 int usb_urb_exit(struct usb_data_stream *stream)  in usb_urb_exit()  argument
242 	usb_urb_kill(stream);  in usb_urb_exit()
244 	for (i = 0; i < stream->urbs_initialized; i++) {  in usb_urb_exit()
245 		if (stream->urb_list[i] != NULL) {  in usb_urb_exit()
248 			usb_free_urb(stream->urb_list[i]);  in usb_urb_exit()
251 	stream->urbs_initialized = 0;  in usb_urb_exit()
253 	usb_free_stream_buffers(stream);  in usb_urb_exit()