54 #define USB_VENDOR_ID_XILINX		0x03fd
55 #define USB_VENDOR_ID_ALTERA		0x09fb
57 #define USB_PRODUCT_ID_XILLYUSB		0xebbe
197 	OPCODE_DATA = 0,
206 	OPCODE_QUIESCE = 0,
227 	unsigned int done = 0;  in fifo_write()
241 		if (n == 0) {  in fifo_write()
267 			writepos = 0;  in fifo_write()
271 				writebuf = 0;  in fifo_write()
280 	unsigned int done = 0;  in fifo_read()
304 		if (n == 0) {  in fifo_read()
330 			readpos = 0;  in fifo_read()
334 				readbuf = 0;  in fifo_read()
350 	return 0;  in xilly_copy_from_user()
358 	return 0;  in xilly_copy_to_user()
365 	return 0;  in xilly_memcpy()
385 		log2_bufnum = 0;  in fifo_init()
387 			log2_size - PAGE_SHIFT : 0;  in fifo_init()
400 	for (i = 0; i < fifo->bufnum; i++) {  in fifo_init()
408 	fifo->fill = 0;  in fifo_init()
409 	fifo->readpos = 0;  in fifo_init()
410 	fifo->readbuf = 0;  in fifo_init()
411 	fifo->writepos = 0;  in fifo_init()
412 	fifo->writebuf = 0;  in fifo_init()
415 	return 0;  in fifo_init()
418 	for (i--; i >= 0; i--)  in fifo_init()
439 	for (i = 0; i < fifo->bufnum; i++)  in fifo_mem_release()
476 		struct xillybuffer *xb =  in endpoint_dealloc()  local
479 		free_pages((unsigned long)xb->buf, ep->order);  in endpoint_dealloc()
480 		kfree(xb);  in endpoint_dealloc()
513 	ep->outstanding_urbs = 0;  in endpoint_alloc()
520 	for (i = 0; i < bufnum; i++) {  in endpoint_alloc()
521 		struct xillybuffer *xb;  in endpoint_alloc()  local
524 		xb = kzalloc(sizeof(*xb), GFP_KERNEL);  in endpoint_alloc()
526 		if (!xb) {  in endpoint_alloc()
534 			kfree(xb);  in endpoint_alloc()
539 		xb->buf = (void *)addr;  in endpoint_alloc()
540 		xb->ep = ep;  in endpoint_alloc()
541 		list_add_tail(&xb->entry, &ep->buffers);  in endpoint_alloc()
586 	for (i = 0; i < xdev->num_channels; i++) {  in wakeup_all()
596 			chan->read_data_ok = 0;  in wakeup_all()
651 	struct xillybuffer *xb = urb->context;  in bulk_in_completer()  local
652 	struct xillyusb_endpoint *ep = xb->ep;  in bulk_in_completer()
662 		list_add_tail(&xb->entry, &ep->buffers);  in bulk_in_completer()
669 	xb->len = urb->actual_length;  in bulk_in_completer()
672 	list_add_tail(&xb->entry, &ep->filled_buffers);  in bulk_in_completer()
681 	struct xillybuffer *xb = urb->context;  in bulk_out_completer()  local
682 	struct xillyusb_endpoint *ep = xb->ep;  in bulk_out_completer()
692 	list_add_tail(&xb->entry, &ep->buffers);  in bulk_out_completer()
703 	struct xillybuffer *xb;  in try_queue_bulk_in()  local
723 		xb = list_first_entry(&ep->buffers, struct xillybuffer, entry);  in try_queue_bulk_in()
724 		list_del(&xb->entry);  in try_queue_bulk_in()
729 		urb = usb_alloc_urb(0, GFP_KERNEL);  in try_queue_bulk_in()
737 				  xb->buf, bufsize, bulk_in_completer, xb);  in try_queue_bulk_in()
758 	list_add_tail(&xb->entry, &ep->buffers);  in try_queue_bulk_in()
770 	struct xillybuffer *xb;  in try_queue_bulk_out()  local
818 		xb = list_first_entry(&ep->buffers, struct xillybuffer, entry);  in try_queue_bulk_out()
819 		list_del(&xb->entry);  in try_queue_bulk_out()
826 		count = fifo_read(&ep->fifo, xb->buf, max_read, xilly_memcpy);  in try_queue_bulk_out()
829 		 * xilly_memcpy always returns 0 => fifo_read can't fail =>  in try_queue_bulk_out()
830 		 * count > 0  in try_queue_bulk_out()
833 		urb = usb_alloc_urb(0, GFP_KERNEL);  in try_queue_bulk_out()
841 				  xb->buf, count, bulk_out_completer, xb);  in try_queue_bulk_out()
865 	list_add_tail(&xb->entry, &ep->buffers);  in try_queue_bulk_out()
914 		WRITE_ONCE(chan->read_data_ok, 0);  in process_in_opcode()
919 		chan->flushing = 0;  in process_in_opcode()
934 	return 0;  in process_in_opcode()
937 static int process_bulk_in(struct xillybuffer *xb)  in process_bulk_in()  argument
939 	struct xillyusb_endpoint *ep = xb->ep;  in process_bulk_in()
942 	int dws = xb->len >> 2;  in process_bulk_in()
943 	__le32 *p = xb->buf;  in process_bulk_in()
947 	int chan_num = 0, opcode;  in process_bulk_in()
950 	int in_bytes_left = 0;  in process_bulk_in()
953 	if ((dws << 2) != xb->len) {  in process_bulk_in()
955 			xb->len);  in process_bulk_in()
970 		chan_num = ctrlword & 0xfff;  in process_bulk_in()
971 		count = (ctrlword >> 12) & 0x3ff;  in process_bulk_in()
972 		opcode = (ctrlword >> 24) & 0xf;  in process_bulk_in()
975 			unsigned int in_counter = xdev->in_counter++ & 0x3ff;  in process_bulk_in()
1024 	return 0;  in process_bulk_in()
1033 	struct xillybuffer *xb;  in bulk_in_work()  local
1035 	int rc = 0;  in bulk_in_work()
1054 		xb = list_first_entry(&ep->filled_buffers, struct xillybuffer,  in bulk_in_work()
1056 		list_del(&xb->entry);  in bulk_in_work()
1063 			rc = process_bulk_in(xb);  in bulk_in_work()
1066 		list_add_tail(&xb->entry, &ep->buffers);  in bulk_in_work()
1078 	int rc = 0;  in xillyusb_send_opcode()
1080 	msg[0] = cpu_to_le32((chan_num & 0xfff) |  in xillyusb_send_opcode()
1081 			     ((opcode & 0xf) << 24));  in xillyusb_send_opcode()
1139 		return 0;  in flush_downstream()
1146 		chan->canceled = 0;  in flush_downstream()
1148 					  OPCODE_CANCEL_CHECKPOINT, 0);  in flush_downstream()
1157 			if (left_to_sleep <= 0) {  in flush_downstream()
1207 		if (left_to_sleep <= 0)  in flush_downstream()
1218 		if (interruptible && rc < 0)  in flush_downstream()
1224 	return 0;  in flush_downstream()
1317 		chan->out_bytes = 0;  in xillyusb_open()
1318 		chan->flushed = 0;  in xillyusb_open()
1367 		u32 in_checkpoint = 0;  in xillyusb_open()
1373 		chan->in_consumed_bytes = 0;  in xillyusb_open()
1374 		chan->poll_used = 0;  in xillyusb_open()
1395 	return 0;  in xillyusb_open()
1398 	chan->read_data_ok = 0;  in xillyusb_open()
1417 		chan->open_for_read = 0;  in xillyusb_open()
1420 		chan->open_for_write = 0;  in xillyusb_open()
1443 	int bytes_done = 0;  in xillyusb_read()
1465 		if (rc < 0)  in xillyusb_read()
1491 		if (chan->in_synchronous && diff >= 0) {  in xillyusb_read()
1515 		     (checkpoint_for_complete && leap > 0))) {  in xillyusb_read()
1526 		    (left_to_sleep <= 0 && bytes_done))  in xillyusb_read()
1542 			rc = 0;  in xillyusb_read()
1567 		if (left_to_sleep > 0) {  in xillyusb_read()
1579 		} else { /* bytes_done == 0 */  in xillyusb_read()
1591 		if (rc < 0) {  in xillyusb_read()
1615 		return 0;  in xillyusb_flush()
1664 		if (count == 0)  in xillyusb_write()
1670 		if (rc != 0)  in xillyusb_write()
1686 	if (rc < 0)  in xillyusb_write()
1693 		chan->flushed = 0;  in xillyusb_write()
1697 		int flush_rc = flush_downstream(chan, 0, true);  in xillyusb_write()
1713 	int rc_read = 0, rc_write = 0;  in xillyusb_release()
1719 					       OPCODE_CLOSE, 0);  in xillyusb_release()
1742 		chan->open_for_read = 0;  in xillyusb_release()
1768 						OPCODE_CLOSE, 0);  in xillyusb_release()
1771 		chan->open_for_write = 0;  in xillyusb_release()
1790 	int rc = 0;  in xillyusb_llseek()
1833 		chan->flushed = 0;  in xillyusb_llseek()
1852 	__poll_t mask = 0;  in xillyusb_poll()
1926 	return 0;  in xillyusb_setup_base_eps()
1947 	for (i = 0; i < num_channels; i++, chan++) {  in setup_channels()
1959 		if (in_desc & 0x80) { /* Entry is valid */  in setup_channels()
1961 			chan->in_synchronous = !!(in_desc & 0x40);  in setup_channels()
1962 			chan->in_seekable = !!(in_desc & 0x20);  in setup_channels()
1963 			chan->in_log2_element_size = in_desc & 0x0f;  in setup_channels()
1964 			chan->in_log2_fifo_size = ((in_desc >> 8) & 0x1f) + 16;  in setup_channels()
1973 		if ((out_desc & 0x80) && i < 14) { /* Entry is valid */  in setup_channels()
1975 			chan->out_synchronous = !!(out_desc & 0x40);  in setup_channels()
1976 			chan->out_seekable = !!(out_desc & 0x20);  in setup_channels()
1977 			chan->out_log2_element_size = out_desc & 0x0f;  in setup_channels()
1979 				((out_desc >> 8) & 0x1f) + 16;  in setup_channels()
1983 	return 0;  in setup_channels()
1997 	rc = xillyusb_send_opcode(xdev, ~0, OPCODE_QUIESCE, 0);  in xillyusb_discovery()
2007 	bogus_chandesc[0] = cpu_to_le16(0x80);  in xillyusb_discovery()
2008 	bogus_chandesc[1] = cpu_to_le16(0);  in xillyusb_discovery()
2027 	rc = xillyusb_send_opcode(xdev, ~0, OPCODE_REQ_IDT, 0);  in xillyusb_discovery()
2043 	if (rc < 0) {  in xillyusb_discovery()
2064 	if (crc32_le(~0, idt, idt_len) != 0) {  in xillyusb_discovery()
2070 	if (*idt > 0x90) {  in xillyusb_discovery()
2071 …dev_err(&interface->dev, "No support for IDT version 0x%02x. Maybe the xillyusb driver needs an up…  in xillyusb_discovery()
2145 	xdev->error = 0;  in xillyusb_probe()
2147 	xdev->in_counter = 0;  in xillyusb_probe()
2148 	xdev->in_bytes_left = 0;  in xillyusb_probe()
2149 	xdev->workq = alloc_workqueue(xillyname, WQ_HIGHPRI, 0);  in xillyusb_probe()
2169 	return 0;  in xillyusb_probe()
2197 	xillyusb_send_opcode(xdev, ~0, OPCODE_QUIESCE, 0);  in xillyusb_disconnect()
2223 	for (i = 0; i < xdev->num_channels; i++) {  in xillyusb_disconnect()
2259 	int rc = 0;  in xillyusb_init()
2264 		fifo_buf_order = 0;  in xillyusb_init()