55 #define USB_VENDOR_ID_XILINX		0x03fd
56 #define USB_VENDOR_ID_ALTERA		0x09fb
58 #define USB_PRODUCT_ID_XILLYUSB		0xebbe
198 	OPCODE_DATA = 0,
207 	OPCODE_QUIESCE = 0,
228 	unsigned int done = 0;  in fifo_write()
242 		if (n == 0) {  in fifo_write()
268 			writepos = 0;  in fifo_write()
272 				writebuf = 0;  in fifo_write()
281 	unsigned int done = 0;  in fifo_read()
305 		if (n == 0) {  in fifo_read()
331 			readpos = 0;  in fifo_read()
335 				readbuf = 0;  in fifo_read()
351 	return 0;  in xilly_copy_from_user()
359 	return 0;  in xilly_copy_to_user()
366 	return 0;  in xilly_memcpy()
386 		log2_bufnum = 0;  in fifo_init()
388 			log2_size - PAGE_SHIFT : 0;  in fifo_init()
401 	for (i = 0; i < fifo->bufnum; i++) {  in fifo_init()
409 	fifo->fill = 0;  in fifo_init()
410 	fifo->readpos = 0;  in fifo_init()
411 	fifo->readbuf = 0;  in fifo_init()
412 	fifo->writepos = 0;  in fifo_init()
413 	fifo->writebuf = 0;  in fifo_init()
416 	return 0;  in fifo_init()
419 	for (i--; i >= 0; i--)  in fifo_init()
440 	for (i = 0; i < fifo->bufnum; i++)  in fifo_mem_release()
477 		struct xillybuffer *xb =  in endpoint_dealloc()  local
480 		free_pages((unsigned long)xb->buf, ep->order);  in endpoint_dealloc()
481 		kfree(xb);  in endpoint_dealloc()
514 	ep->outstanding_urbs = 0;  in endpoint_alloc()
521 	for (i = 0; i < bufnum; i++) {  in endpoint_alloc()
522 		struct xillybuffer *xb;  in endpoint_alloc()  local
525 		xb = kzalloc(sizeof(*xb), GFP_KERNEL);  in endpoint_alloc()
527 		if (!xb) {  in endpoint_alloc()
535 			kfree(xb);  in endpoint_alloc()
540 		xb->buf = (void *)addr;  in endpoint_alloc()
541 		xb->ep = ep;  in endpoint_alloc()
542 		list_add_tail(&xb->entry, &ep->buffers);  in endpoint_alloc()
583 	for (i = 0; i < xdev->num_channels; i++) {  in wakeup_all()
593 			chan->read_data_ok = 0;  in wakeup_all()
648 	struct xillybuffer *xb = urb->context;  in bulk_in_completer()  local
649 	struct xillyusb_endpoint *ep = xb->ep;  in bulk_in_completer()
659 		list_add_tail(&xb->entry, &ep->buffers);  in bulk_in_completer()
666 	xb->len = urb->actual_length;  in bulk_in_completer()
669 	list_add_tail(&xb->entry, &ep->filled_buffers);  in bulk_in_completer()
678 	struct xillybuffer *xb = urb->context;  in bulk_out_completer()  local
679 	struct xillyusb_endpoint *ep = xb->ep;  in bulk_out_completer()
689 	list_add_tail(&xb->entry, &ep->buffers);  in bulk_out_completer()
700 	struct xillybuffer *xb;  in try_queue_bulk_in()  local
720 		xb = list_first_entry(&ep->buffers, struct xillybuffer, entry);  in try_queue_bulk_in()
721 		list_del(&xb->entry);  in try_queue_bulk_in()
726 		urb = usb_alloc_urb(0, GFP_KERNEL);  in try_queue_bulk_in()
734 				  xb->buf, bufsize, bulk_in_completer, xb);  in try_queue_bulk_in()
755 	list_add_tail(&xb->entry, &ep->buffers);  in try_queue_bulk_in()
767 	struct xillybuffer *xb;  in try_queue_bulk_out()  local
815 		xb = list_first_entry(&ep->buffers, struct xillybuffer, entry);  in try_queue_bulk_out()
816 		list_del(&xb->entry);  in try_queue_bulk_out()
823 		count = fifo_read(&ep->fifo, xb->buf, max_read, xilly_memcpy);  in try_queue_bulk_out()
826 		 * xilly_memcpy always returns 0 => fifo_read can't fail =>  in try_queue_bulk_out()
827 		 * count > 0  in try_queue_bulk_out()
830 		urb = usb_alloc_urb(0, GFP_KERNEL);  in try_queue_bulk_out()
838 				  xb->buf, count, bulk_out_completer, xb);  in try_queue_bulk_out()
862 	list_add_tail(&xb->entry, &ep->buffers);  in try_queue_bulk_out()
911 		WRITE_ONCE(chan->read_data_ok, 0);  in process_in_opcode()
916 		chan->flushing = 0;  in process_in_opcode()
931 	return 0;  in process_in_opcode()
934 static int process_bulk_in(struct xillybuffer *xb)  in process_bulk_in()  argument
936 	struct xillyusb_endpoint *ep = xb->ep;  in process_bulk_in()
939 	int dws = xb->len >> 2;  in process_bulk_in()
940 	__le32 *p = xb->buf;  in process_bulk_in()
944 	int chan_num = 0, opcode;  in process_bulk_in()
947 	int in_bytes_left = 0;  in process_bulk_in()
950 	if ((dws << 2) != xb->len) {  in process_bulk_in()
952 			xb->len);  in process_bulk_in()
967 		chan_num = ctrlword & 0xfff;  in process_bulk_in()
968 		count = (ctrlword >> 12) & 0x3ff;  in process_bulk_in()
969 		opcode = (ctrlword >> 24) & 0xf;  in process_bulk_in()
972 			unsigned int in_counter = xdev->in_counter++ & 0x3ff;  in process_bulk_in()
1021 	return 0;  in process_bulk_in()
1030 	struct xillybuffer *xb;  in bulk_in_work()  local
1032 	int rc = 0;  in bulk_in_work()
1051 		xb = list_first_entry(&ep->filled_buffers, struct xillybuffer,  in bulk_in_work()
1053 		list_del(&xb->entry);  in bulk_in_work()
1060 			rc = process_bulk_in(xb);  in bulk_in_work()
1063 		list_add_tail(&xb->entry, &ep->buffers);  in bulk_in_work()
1075 	int rc = 0;  in xillyusb_send_opcode()
1077 	msg[0] = cpu_to_le32((chan_num & 0xfff) |  in xillyusb_send_opcode()
1078 			     ((opcode & 0xf) << 24));  in xillyusb_send_opcode()
1136 		return 0;  in flush_downstream()
1143 		chan->canceled = 0;  in flush_downstream()
1145 					  OPCODE_CANCEL_CHECKPOINT, 0);  in flush_downstream()
1154 			if (left_to_sleep <= 0) {  in flush_downstream()
1204 		if (left_to_sleep <= 0)  in flush_downstream()
1215 		if (interruptible && rc < 0)  in flush_downstream()
1221 	return 0;  in flush_downstream()
1314 		chan->out_bytes = 0;  in xillyusb_open()
1315 		chan->flushed = 0;  in xillyusb_open()
1364 		u32 in_checkpoint = 0;  in xillyusb_open()
1370 		chan->in_consumed_bytes = 0;  in xillyusb_open()
1371 		chan->poll_used = 0;  in xillyusb_open()
1392 	return 0;  in xillyusb_open()
1395 	chan->read_data_ok = 0;  in xillyusb_open()
1414 		chan->open_for_read = 0;  in xillyusb_open()
1417 		chan->open_for_write = 0;  in xillyusb_open()
1440 	int bytes_done = 0;  in xillyusb_read()
1462 		if (rc < 0)  in xillyusb_read()
1488 		if (chan->in_synchronous && diff >= 0) {  in xillyusb_read()
1512 		     (checkpoint_for_complete && leap > 0))) {  in xillyusb_read()
1523 		    (left_to_sleep <= 0 && bytes_done))  in xillyusb_read()
1539 			rc = 0;  in xillyusb_read()
1564 		if (left_to_sleep > 0) {  in xillyusb_read()
1576 		} else { /* bytes_done == 0 */  in xillyusb_read()
1588 		if (rc < 0) {  in xillyusb_read()
1612 		return 0;  in xillyusb_flush()
1661 		if (count == 0)  in xillyusb_write()
1667 		if (rc != 0)  in xillyusb_write()
1683 	if (rc < 0)  in xillyusb_write()
1690 		chan->flushed = 0;  in xillyusb_write()
1694 		int flush_rc = flush_downstream(chan, 0, true);  in xillyusb_write()
1710 	int rc_read = 0, rc_write = 0;  in xillyusb_release()
1716 					       OPCODE_CLOSE, 0);  in xillyusb_release()
1739 		chan->open_for_read = 0;  in xillyusb_release()
1765 						OPCODE_CLOSE, 0);  in xillyusb_release()
1768 		chan->open_for_write = 0;  in xillyusb_release()
1787 	int rc = 0;  in xillyusb_llseek()
1830 		chan->flushed = 0;  in xillyusb_llseek()
1849 	__poll_t mask = 0;  in xillyusb_poll()
1930 	return 0;  in xillyusb_setup_base_eps()
1952 	for (i = 0; i < num_channels; i++, chan++) {  in setup_channels()
1964 		if (in_desc & 0x80) { /* Entry is valid */  in setup_channels()
1966 			chan->in_synchronous = !!(in_desc & 0x40);  in setup_channels()
1967 			chan->in_seekable = !!(in_desc & 0x20);  in setup_channels()
1968 			chan->in_log2_element_size = in_desc & 0x0f;  in setup_channels()
1969 			chan->in_log2_fifo_size = ((in_desc >> 8) & 0x1f) + 16;  in setup_channels()
1978 		if ((out_desc & 0x80) && i < 14) { /* Entry is valid */  in setup_channels()
1989 			chan->out_synchronous = !!(out_desc & 0x40);  in setup_channels()
1990 			chan->out_seekable = !!(out_desc & 0x20);  in setup_channels()
1991 			chan->out_log2_element_size = out_desc & 0x0f;  in setup_channels()
1993 				((out_desc >> 8) & 0x1f) + 16;  in setup_channels()
1998 	return 0;  in setup_channels()
2012 	rc = xillyusb_send_opcode(xdev, ~0, OPCODE_QUIESCE, 0);  in xillyusb_discovery()
2022 	bogus_chandesc[0] = cpu_to_le16(0x80);  in xillyusb_discovery()
2023 	bogus_chandesc[1] = cpu_to_le16(0);  in xillyusb_discovery()
2042 	rc = xillyusb_send_opcode(xdev, ~0, OPCODE_REQ_IDT, 0);  in xillyusb_discovery()
2058 	if (rc < 0) {  in xillyusb_discovery()
2079 	if (crc32_le(~0, idt, idt_len) != 0) {  in xillyusb_discovery()
2085 	if (*idt > 0x90) {  in xillyusb_discovery()
2086 …dev_err(&interface->dev, "No support for IDT version 0x%02x. Maybe the xillyusb driver needs an up…  in xillyusb_discovery()
2162 	xdev->error = 0;  in xillyusb_probe()
2164 	xdev->in_counter = 0;  in xillyusb_probe()
2165 	xdev->in_bytes_left = 0;  in xillyusb_probe()
2166 	xdev->workq = alloc_workqueue(xillyname, WQ_HIGHPRI, 0);  in xillyusb_probe()
2186 	return 0;  in xillyusb_probe()
2214 	xillyusb_send_opcode(xdev, ~0, OPCODE_QUIESCE, 0);  in xillyusb_disconnect()
2240 	for (i = 0; i < xdev->num_channels; i++) {  in xillyusb_disconnect()
2276 	int rc = 0;  in xillyusb_init()
2278 	wakeup_wq = alloc_workqueue(xillyname, 0, 0);  in xillyusb_init()
2285 		fifo_buf_order = 0;  in xillyusb_init()