1 // SPDX-License-Identifier: GPL-2.0
3 * Toshiba TC86C001 ("Goku-S") USB Device Controller driver
5 * Copyright (C) 2000-2002 Lineo
6 * by Stuart Lynne, Tom Rushworth, and Bruce Balden
7 * Copyright (C) 2002 Toshiba Corporation
8 * Copyright (C) 2003 MontaVista Software (source@mvista.com)
12 * This device has ep0 and three semi-configurable bulk/interrupt endpoints.
14 * - Endpoint numbering is fixed: ep{1,2,3}-bulk
15 * - Gadget drivers can choose ep maxpacket (8/16/32/64)
16 * - Gadget drivers can choose direction (IN, OUT)
17 * - DMA works with ep1 (OUT transfers) and ep2 (IN transfers).
20 // #define VERBOSE /* extra debug messages (success too) */
21 // #define USB_TRACE /* packet-level success messages */
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/pci.h>
26 #include <linux/delay.h>
27 #include <linux/ioport.h>
28 #include <linux/slab.h>
29 #include <linux/errno.h>
30 #include <linux/timer.h>
31 #include <linux/list.h>
32 #include <linux/interrupt.h>
33 #include <linux/proc_fs.h>
34 #include <linux/seq_file.h>
35 #include <linux/device.h>
36 #include <linux/usb/ch9.h>
37 #include <linux/usb/gadget.h>
38 #include <linux/prefetch.h>
40 #include <asm/byteorder.h>
43 #include <asm/unaligned.h>
48 #define DRIVER_DESC "TC86C001 USB Device Controller"
49 #define DRIVER_VERSION "30-Oct 2003"
51 static const char driver_name [] = "goku_udc";
52 static const char driver_desc [] = DRIVER_DESC;
54 MODULE_AUTHOR("source@mvista.com");
55 MODULE_DESCRIPTION(DRIVER_DESC);
56 MODULE_LICENSE("GPL");
60 * IN dma behaves ok under testing, though the IN-dma abort paths don't
61 * seem to behave quite as expected. Used by default.
63 * OUT dma documents design problems handling the common "short packet"
64 * transfer termination policy; it couldn't be enabled by default, even
65 * if the OUT-dma abort problems had a resolution.
67 static unsigned use_dma = 1;
70 //#include <linux/moduleparam.h>
71 /* "modprobe goku_udc use_dma=1" etc
73 * 1 to use IN dma only (normal operation)
74 * 2 to use IN and OUT dma
76 module_param(use_dma, uint, S_IRUGO);
79 /*-------------------------------------------------------------------------*/
81 static void nuke(struct goku_ep *, int status);
84 command(struct goku_udc_regs __iomem *regs, int command, unsigned epnum)
86 writel(COMMAND_EP(epnum) | command, ®s->Command);
91 goku_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
99 ep = container_of(_ep, struct goku_ep, ep);
101 || desc->bDescriptorType != USB_DT_ENDPOINT)
104 if (ep == &dev->ep[0])
106 if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
108 if (ep->num != usb_endpoint_num(desc))
111 switch (usb_endpoint_type(desc)) {
112 case USB_ENDPOINT_XFER_BULK:
113 case USB_ENDPOINT_XFER_INT:
119 if ((readl(ep->reg_status) & EPxSTATUS_EP_MASK)
120 != EPxSTATUS_EP_INVALID)
123 /* enabling the no-toggle interrupt mode would need an api hook */
125 max = get_unaligned_le16(&desc->wMaxPacketSize);
142 mode |= 2 << 1; /* bulk, or intr-with-toggle */
144 /* ep1/ep2 dma direction is chosen early; it works in the other
145 * direction, with pio. be cautious with out-dma.
147 ep->is_in = usb_endpoint_dir_in(desc);
150 ep->dma = (use_dma != 0) && (ep->num == UDC_MSTRD_ENDPOINT);
152 ep->dma = (use_dma == 2) && (ep->num == UDC_MSTWR_ENDPOINT);
154 DBG(dev, "%s out-dma hides short packets\n",
158 spin_lock_irqsave(&ep->dev->lock, flags);
160 /* ep1 and ep2 can do double buffering and/or dma */
162 struct goku_udc_regs __iomem *regs = ep->dev->regs;
165 /* double buffer except (for now) with pio in */
166 tmp = ((ep->dma || !ep->is_in)
167 ? 0x10 /* double buffered */
168 : 0x11 /* single buffer */
170 tmp |= readl(®s->EPxSingle);
171 writel(tmp, ®s->EPxSingle);
173 tmp = (ep->dma ? 0x10/*dma*/ : 0x11/*pio*/) << ep->num;
174 tmp |= readl(®s->EPxBCS);
175 writel(tmp, ®s->EPxBCS);
177 writel(mode, ep->reg_mode);
178 command(ep->dev->regs, COMMAND_RESET, ep->num);
179 ep->ep.maxpacket = max;
182 spin_unlock_irqrestore(&ep->dev->lock, flags);
184 DBG(dev, "enable %s %s %s maxpacket %u\n", ep->ep.name,
185 ep->is_in ? "IN" : "OUT",
186 ep->dma ? "dma" : "pio",
192 static void ep_reset(struct goku_udc_regs __iomem *regs, struct goku_ep *ep)
194 struct goku_udc *dev = ep->dev;
197 command(regs, COMMAND_INVALID, ep->num);
199 if (ep->num == UDC_MSTWR_ENDPOINT)
200 dev->int_enable &= ~(INT_MSTWREND
202 else if (ep->num == UDC_MSTRD_ENDPOINT)
203 dev->int_enable &= ~INT_MSTRDEND;
204 dev->int_enable &= ~INT_EPxDATASET (ep->num);
206 dev->int_enable &= ~INT_EP0;
207 writel(dev->int_enable, ®s->int_enable);
208 readl(®s->int_enable);
210 struct goku_udc_regs __iomem *r = ep->dev->regs;
213 tmp = readl(&r->EPxSingle);
214 tmp &= ~(0x11 << ep->num);
215 writel(tmp, &r->EPxSingle);
217 tmp = readl(&r->EPxBCS);
218 tmp &= ~(0x11 << ep->num);
219 writel(tmp, &r->EPxBCS);
221 /* reset dma in case we're still using it */
225 master = readl(®s->dma_master) & MST_RW_BITS;
226 if (ep->num == UDC_MSTWR_ENDPOINT) {
227 master &= ~MST_W_BITS;
228 master |= MST_WR_RESET;
230 master &= ~MST_R_BITS;
231 master |= MST_RD_RESET;
233 writel(master, ®s->dma_master);
237 usb_ep_set_maxpacket_limit(&ep->ep, MAX_FIFO_SIZE);
244 static int goku_ep_disable(struct usb_ep *_ep)
247 struct goku_udc *dev;
250 ep = container_of(_ep, struct goku_ep, ep);
251 if (!_ep || !ep->ep.desc)
254 if (dev->ep0state == EP0_SUSPEND)
257 VDBG(dev, "disable %s\n", _ep->name);
259 spin_lock_irqsave(&dev->lock, flags);
260 nuke(ep, -ESHUTDOWN);
261 ep_reset(dev->regs, ep);
262 spin_unlock_irqrestore(&dev->lock, flags);
267 /*-------------------------------------------------------------------------*/
269 static struct usb_request *
270 goku_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
272 struct goku_request *req;
276 req = kzalloc(sizeof *req, gfp_flags);
280 INIT_LIST_HEAD(&req->queue);
285 goku_free_request(struct usb_ep *_ep, struct usb_request *_req)
287 struct goku_request *req;
292 req = container_of(_req, struct goku_request, req);
293 WARN_ON(!list_empty(&req->queue));
297 /*-------------------------------------------------------------------------*/
300 done(struct goku_ep *ep, struct goku_request *req, int status)
302 struct goku_udc *dev;
303 unsigned stopped = ep->stopped;
305 list_del_init(&req->queue);
307 if (likely(req->req.status == -EINPROGRESS))
308 req->req.status = status;
310 status = req->req.status;
315 usb_gadget_unmap_request(&dev->gadget, &req->req, ep->is_in);
318 if (status && status != -ESHUTDOWN)
320 VDBG(dev, "complete %s req %p stat %d len %u/%u\n",
321 ep->ep.name, &req->req, status,
322 req->req.actual, req->req.length);
324 /* don't modify queue heads during completion callback */
326 spin_unlock(&dev->lock);
327 usb_gadget_giveback_request(&ep->ep, &req->req);
328 spin_lock(&dev->lock);
329 ep->stopped = stopped;
332 /*-------------------------------------------------------------------------*/
335 write_packet(u32 __iomem *fifo, u8 *buf, struct goku_request *req, unsigned max)
337 unsigned length, count;
339 length = min(req->req.length - req->req.actual, max);
340 req->req.actual += length;
343 while (likely(count--))
344 writel(*buf++, fifo);
348 // return: 0 = still running, 1 = completed, negative = errno
349 static int write_fifo(struct goku_ep *ep, struct goku_request *req)
351 struct goku_udc *dev = ep->dev;
357 tmp = readl(&dev->regs->DataSet);
358 buf = req->req.buf + req->req.actual;
362 if (unlikely(ep->num == 0 && dev->ep0state != EP0_IN))
365 /* NOTE: just single-buffered PIO-IN for now. */
366 if (unlikely((tmp & DATASET_A(ep->num)) != 0))
369 /* clear our "packet available" irq */
371 writel(~INT_EPxDATASET(ep->num), &dev->regs->int_status);
373 count = write_packet(ep->reg_fifo, buf, req, ep->ep.maxpacket);
375 /* last packet often short (sometimes a zlp, especially on ep0) */
376 if (unlikely(count != ep->ep.maxpacket)) {
377 writel(~(1<<ep->num), &dev->regs->EOP);
379 dev->ep[0].stopped = 1;
380 dev->ep0state = EP0_STATUS;
384 if (likely(req->req.length != req->req.actual)
390 #if 0 /* printk seemed to trash is_last...*/
392 VDBG(dev, "wrote %s %u bytes%s IN %u left %p\n",
393 ep->ep.name, count, is_last ? "/last" : "",
394 req->req.length - req->req.actual, req);
397 /* requests complete when all IN data is in the FIFO,
398 * or sometimes later, if a zlp was needed.
408 static int read_fifo(struct goku_ep *ep, struct goku_request *req)
410 struct goku_udc_regs __iomem *regs;
413 unsigned bufferspace, is_short, dbuff;
415 regs = ep->dev->regs;
417 buf = req->req.buf + req->req.actual;
420 if (unlikely(ep->num == 0 && ep->dev->ep0state != EP0_OUT))
423 dbuff = (ep->num == 1 || ep->num == 2);
425 /* ack dataset irq matching the status we'll handle */
427 writel(~INT_EPxDATASET(ep->num), ®s->int_status);
429 set = readl(®s->DataSet) & DATASET_AB(ep->num);
430 size = readl(®s->EPxSizeLA[ep->num]);
431 bufferspace = req->req.length - req->req.actual;
433 /* usually do nothing without an OUT packet */
434 if (likely(ep->num != 0 || bufferspace != 0)) {
435 if (unlikely(set == 0))
437 /* use ep1/ep2 double-buffering for OUT */
438 if (!(size & PACKET_ACTIVE))
439 size = readl(®s->EPxSizeLB[ep->num]);
440 if (!(size & PACKET_ACTIVE)) /* "can't happen" */
442 size &= DATASIZE; /* EPxSizeH == 0 */
444 /* ep0out no-out-data case for set_config, etc */
448 /* read all bytes from this packet */
449 req->req.actual += size;
450 is_short = (size < ep->ep.maxpacket);
452 VDBG(ep->dev, "read %s %u bytes%s OUT req %p %u/%u\n",
453 ep->ep.name, size, is_short ? "/S" : "",
454 req, req->req.actual, req->req.length);
456 while (likely(size-- != 0)) {
457 u8 byte = (u8) readl(ep->reg_fifo);
459 if (unlikely(bufferspace == 0)) {
460 /* this happens when the driver's buffer
461 * is smaller than what the host sent.
462 * discard the extra data in this packet.
464 if (req->req.status != -EOVERFLOW)
465 DBG(ep->dev, "%s overflow %u\n",
467 req->req.status = -EOVERFLOW;
475 if (unlikely(is_short || req->req.actual == req->req.length)) {
476 if (unlikely(ep->num == 0)) {
477 /* non-control endpoints now usable? */
478 if (ep->dev->req_config)
479 writel(ep->dev->configured
480 ? USBSTATE_CONFIGURED
483 /* ep0out status stage */
484 writel(~(1<<0), ®s->EOP);
486 ep->dev->ep0state = EP0_STATUS;
490 /* empty the second buffer asap */
491 if (dbuff && !list_empty(&ep->queue)) {
492 req = list_entry(ep->queue.next,
493 struct goku_request, queue);
503 pio_irq_enable(struct goku_udc *dev,
504 struct goku_udc_regs __iomem *regs, int epnum)
506 dev->int_enable |= INT_EPxDATASET (epnum);
507 writel(dev->int_enable, ®s->int_enable);
508 /* write may still be posted */
512 pio_irq_disable(struct goku_udc *dev,
513 struct goku_udc_regs __iomem *regs, int epnum)
515 dev->int_enable &= ~INT_EPxDATASET (epnum);
516 writel(dev->int_enable, ®s->int_enable);
517 /* write may still be posted */
521 pio_advance(struct goku_ep *ep)
523 struct goku_request *req;
525 if (unlikely(list_empty (&ep->queue)))
527 req = list_entry(ep->queue.next, struct goku_request, queue);
528 (ep->is_in ? write_fifo : read_fifo)(ep, req);
532 /*-------------------------------------------------------------------------*/
534 // return: 0 = q running, 1 = q stopped, negative = errno
535 static int start_dma(struct goku_ep *ep, struct goku_request *req)
537 struct goku_udc_regs __iomem *regs = ep->dev->regs;
539 u32 start = req->req.dma;
540 u32 end = start + req->req.length - 1;
542 master = readl(®s->dma_master) & MST_RW_BITS;
544 /* re-init the bits affecting IN dma; careful with zlps */
545 if (likely(ep->is_in)) {
546 if (unlikely(master & MST_RD_ENA)) {
547 DBG (ep->dev, "start, IN active dma %03x!!\n",
551 writel(end, ®s->in_dma_end);
552 writel(start, ®s->in_dma_start);
554 master &= ~MST_R_BITS;
555 if (unlikely(req->req.length == 0))
556 master = MST_RD_ENA | MST_RD_EOPB;
557 else if ((req->req.length % ep->ep.maxpacket) != 0
559 master = MST_RD_ENA | MST_EOPB_ENA;
561 master = MST_RD_ENA | MST_EOPB_DIS;
563 ep->dev->int_enable |= INT_MSTRDEND;
565 /* Goku DMA-OUT merges short packets, which plays poorly with
566 * protocols where short packets mark the transfer boundaries.
567 * The chip supports a nonstandard policy with INT_MSTWRTMOUT,
568 * ending transfers after 3 SOFs; we don't turn it on.
571 if (unlikely(master & MST_WR_ENA)) {
572 DBG (ep->dev, "start, OUT active dma %03x!!\n",
576 writel(end, ®s->out_dma_end);
577 writel(start, ®s->out_dma_start);
579 master &= ~MST_W_BITS;
580 master |= MST_WR_ENA | MST_TIMEOUT_DIS;
582 ep->dev->int_enable |= INT_MSTWREND|INT_MSTWRTMOUT;
585 writel(master, ®s->dma_master);
586 writel(ep->dev->int_enable, ®s->int_enable);
590 static void dma_advance(struct goku_udc *dev, struct goku_ep *ep)
592 struct goku_request *req;
593 struct goku_udc_regs __iomem *regs = ep->dev->regs;
596 master = readl(®s->dma_master);
598 if (unlikely(list_empty(&ep->queue))) {
601 dev->int_enable &= ~INT_MSTRDEND;
603 dev->int_enable &= ~(INT_MSTWREND|INT_MSTWRTMOUT);
604 writel(dev->int_enable, ®s->int_enable);
607 req = list_entry(ep->queue.next, struct goku_request, queue);
609 /* normal hw dma completion (not abort) */
610 if (likely(ep->is_in)) {
611 if (unlikely(master & MST_RD_ENA))
613 req->req.actual = readl(®s->in_dma_current);
615 if (unlikely(master & MST_WR_ENA))
618 /* hardware merges short packets, and also hides packet
619 * overruns. a partial packet MAY be in the fifo here.
621 req->req.actual = readl(®s->out_dma_current);
623 req->req.actual -= req->req.dma;
627 VDBG(dev, "done %s %s dma, %u/%u bytes, req %p\n",
628 ep->ep.name, ep->is_in ? "IN" : "OUT",
629 req->req.actual, req->req.length, req);
632 if (list_empty(&ep->queue))
634 req = list_entry(ep->queue.next, struct goku_request, queue);
635 (void) start_dma(ep, req);
638 static void abort_dma(struct goku_ep *ep, int status)
640 struct goku_udc_regs __iomem *regs = ep->dev->regs;
641 struct goku_request *req;
644 /* NAK future host requests, hoping the implicit delay lets the
645 * dma engine finish reading (or writing) its latest packet and
646 * empty the dma buffer (up to 16 bytes).
648 * This avoids needing to clean up a partial packet in the fifo;
649 * we can't do that for IN without side effects to HALT and TOGGLE.
651 command(regs, COMMAND_FIFO_DISABLE, ep->num);
652 req = list_entry(ep->queue.next, struct goku_request, queue);
653 master = readl(®s->dma_master) & MST_RW_BITS;
655 /* FIXME using these resets isn't usably documented. this may
656 * not work unless it's followed by disabling the endpoint.
658 * FIXME the OUT reset path doesn't even behave consistently.
661 if (unlikely((readl(®s->dma_master) & MST_RD_ENA) == 0))
663 curr = readl(®s->in_dma_current);
665 writel(curr, ®s->in_dma_end);
666 writel(curr, ®s->in_dma_start);
668 master &= ~MST_R_BITS;
669 master |= MST_RD_RESET;
670 writel(master, ®s->dma_master);
672 if (readl(®s->dma_master) & MST_RD_ENA)
673 DBG(ep->dev, "IN dma active after reset!\n");
676 if (unlikely((readl(®s->dma_master) & MST_WR_ENA) == 0))
678 curr = readl(®s->out_dma_current);
680 writel(curr, ®s->out_dma_end);
681 writel(curr, ®s->out_dma_start);
683 master &= ~MST_W_BITS;
684 master |= MST_WR_RESET;
685 writel(master, ®s->dma_master);
687 if (readl(®s->dma_master) & MST_WR_ENA)
688 DBG(ep->dev, "OUT dma active after reset!\n");
690 req->req.actual = (curr - req->req.dma) + 1;
691 req->req.status = status;
693 VDBG(ep->dev, "%s %s %s %d/%d\n", __func__, ep->ep.name,
694 ep->is_in ? "IN" : "OUT",
695 req->req.actual, req->req.length);
697 command(regs, COMMAND_FIFO_ENABLE, ep->num);
702 /* dma already completed; no abort needed */
703 command(regs, COMMAND_FIFO_ENABLE, ep->num);
704 req->req.actual = req->req.length;
708 /*-------------------------------------------------------------------------*/
711 goku_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
713 struct goku_request *req;
715 struct goku_udc *dev;
719 /* always require a cpu-view buffer so pio works */
720 req = container_of(_req, struct goku_request, req);
721 if (unlikely(!_req || !_req->complete
722 || !_req->buf || !list_empty(&req->queue)))
724 ep = container_of(_ep, struct goku_ep, ep);
725 if (unlikely(!_ep || (!ep->ep.desc && ep->num != 0)))
728 if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN))
731 /* can't touch registers when suspended */
732 if (dev->ep0state == EP0_SUSPEND)
735 /* set up dma mapping in case the caller didn't */
737 status = usb_gadget_map_request(&dev->gadget, &req->req,
744 VDBG(dev, "%s queue req %p, len %u buf %p\n",
745 _ep->name, _req, _req->length, _req->buf);
748 spin_lock_irqsave(&dev->lock, flags);
750 _req->status = -EINPROGRESS;
753 /* for ep0 IN without premature status, zlp is required and
754 * writing EOP starts the status stage (OUT).
756 if (unlikely(ep->num == 0 && ep->is_in))
759 /* kickstart this i/o queue? */
761 if (list_empty(&ep->queue) && likely(!ep->stopped)) {
762 /* dma: done after dma completion IRQ (or error)
763 * pio: done after last fifo operation
766 status = start_dma(ep, req);
768 status = (ep->is_in ? write_fifo : read_fifo)(ep, req);
770 if (unlikely(status != 0)) {
776 } /* else pio or dma irq handler advances the queue. */
778 if (likely(req != NULL))
779 list_add_tail(&req->queue, &ep->queue);
781 if (likely(!list_empty(&ep->queue))
782 && likely(ep->num != 0)
784 && !(dev->int_enable & INT_EPxDATASET (ep->num)))
785 pio_irq_enable(dev, dev->regs, ep->num);
787 spin_unlock_irqrestore(&dev->lock, flags);
789 /* pci writes may still be posted */
793 /* dequeue ALL requests */
794 static void nuke(struct goku_ep *ep, int status)
796 struct goku_request *req;
799 if (list_empty(&ep->queue))
802 abort_dma(ep, status);
803 while (!list_empty(&ep->queue)) {
804 req = list_entry(ep->queue.next, struct goku_request, queue);
805 done(ep, req, status);
809 /* dequeue JUST ONE request */
810 static int goku_dequeue(struct usb_ep *_ep, struct usb_request *_req)
812 struct goku_request *req;
814 struct goku_udc *dev;
817 ep = container_of(_ep, struct goku_ep, ep);
818 if (!_ep || !_req || (!ep->ep.desc && ep->num != 0))
824 /* we can't touch (dma) registers when suspended */
825 if (dev->ep0state == EP0_SUSPEND)
828 VDBG(dev, "%s %s %s %s %p\n", __func__, _ep->name,
829 ep->is_in ? "IN" : "OUT",
830 ep->dma ? "dma" : "pio",
833 spin_lock_irqsave(&dev->lock, flags);
835 /* make sure it's actually queued on this endpoint */
836 list_for_each_entry (req, &ep->queue, queue) {
837 if (&req->req == _req)
840 if (&req->req != _req) {
841 spin_unlock_irqrestore (&dev->lock, flags);
845 if (ep->dma && ep->queue.next == &req->queue && !ep->stopped) {
846 abort_dma(ep, -ECONNRESET);
847 done(ep, req, -ECONNRESET);
848 dma_advance(dev, ep);
849 } else if (!list_empty(&req->queue))
850 done(ep, req, -ECONNRESET);
853 spin_unlock_irqrestore(&dev->lock, flags);
855 return req ? 0 : -EOPNOTSUPP;
858 /*-------------------------------------------------------------------------*/
860 static void goku_clear_halt(struct goku_ep *ep)
862 // assert (ep->num !=0)
863 VDBG(ep->dev, "%s clear halt\n", ep->ep.name);
864 command(ep->dev->regs, COMMAND_SETDATA0, ep->num);
865 command(ep->dev->regs, COMMAND_STALL_CLEAR, ep->num);
869 struct goku_request *req;
871 if (list_empty(&ep->queue))
873 req = list_entry(ep->queue.next, struct goku_request,
875 (void) start_dma(ep, req);
881 static int goku_set_halt(struct usb_ep *_ep, int value)
889 ep = container_of (_ep, struct goku_ep, ep);
893 ep->dev->ep0state = EP0_STALL;
894 ep->dev->ep[0].stopped = 1;
898 /* don't change EPxSTATUS_EP_INVALID to READY */
899 } else if (!ep->ep.desc) {
900 DBG(ep->dev, "%s %s inactive?\n", __func__, ep->ep.name);
904 spin_lock_irqsave(&ep->dev->lock, flags);
905 if (!list_empty(&ep->queue))
907 else if (ep->is_in && value
908 /* data in (either) packet buffer? */
909 && (readl(&ep->dev->regs->DataSet)
910 & DATASET_AB(ep->num)))
916 VDBG(ep->dev, "%s set halt\n", ep->ep.name);
917 command(ep->dev->regs, COMMAND_STALL, ep->num);
918 readl(ep->reg_status);
920 spin_unlock_irqrestore(&ep->dev->lock, flags);
924 static int goku_fifo_status(struct usb_ep *_ep)
927 struct goku_udc_regs __iomem *regs;
932 ep = container_of(_ep, struct goku_ep, ep);
934 /* size is only reported sanely for OUT */
938 /* ignores 16-byte dma buffer; SizeH == 0 */
939 regs = ep->dev->regs;
940 size = readl(®s->EPxSizeLA[ep->num]) & DATASIZE;
941 size += readl(®s->EPxSizeLB[ep->num]) & DATASIZE;
942 VDBG(ep->dev, "%s %s %u\n", __func__, ep->ep.name, size);
946 static void goku_fifo_flush(struct usb_ep *_ep)
949 struct goku_udc_regs __iomem *regs;
954 ep = container_of(_ep, struct goku_ep, ep);
955 VDBG(ep->dev, "%s %s\n", __func__, ep->ep.name);
957 /* don't change EPxSTATUS_EP_INVALID to READY */
958 if (!ep->ep.desc && ep->num != 0) {
959 DBG(ep->dev, "%s %s inactive?\n", __func__, ep->ep.name);
963 regs = ep->dev->regs;
964 size = readl(®s->EPxSizeLA[ep->num]);
967 /* Non-desirable behavior: FIFO_CLEAR also clears the
968 * endpoint halt feature. For OUT, we _could_ just read
969 * the bytes out (PIO, if !ep->dma); for in, no choice.
972 command(regs, COMMAND_FIFO_CLEAR, ep->num);
975 static const struct usb_ep_ops goku_ep_ops = {
976 .enable = goku_ep_enable,
977 .disable = goku_ep_disable,
979 .alloc_request = goku_alloc_request,
980 .free_request = goku_free_request,
983 .dequeue = goku_dequeue,
985 .set_halt = goku_set_halt,
986 .fifo_status = goku_fifo_status,
987 .fifo_flush = goku_fifo_flush,
990 /*-------------------------------------------------------------------------*/
992 static int goku_get_frame(struct usb_gadget *_gadget)
997 static struct usb_ep *goku_match_ep(struct usb_gadget *g,
998 struct usb_endpoint_descriptor *desc,
999 struct usb_ss_ep_comp_descriptor *ep_comp)
1001 struct goku_udc *dev = to_goku_udc(g);
1004 switch (usb_endpoint_type(desc)) {
1005 case USB_ENDPOINT_XFER_INT:
1006 /* single buffering is enough */
1007 ep = &dev->ep[3].ep;
1008 if (usb_gadget_ep_match_desc(g, ep, desc, ep_comp))
1011 case USB_ENDPOINT_XFER_BULK:
1012 if (usb_endpoint_dir_in(desc)) {
1013 /* DMA may be available */
1014 ep = &dev->ep[2].ep;
1015 if (usb_gadget_ep_match_desc(g, ep, desc, ep_comp))
1026 static int goku_udc_start(struct usb_gadget *g,
1027 struct usb_gadget_driver *driver);
1028 static int goku_udc_stop(struct usb_gadget *g);
1030 static const struct usb_gadget_ops goku_ops = {
1031 .get_frame = goku_get_frame,
1032 .udc_start = goku_udc_start,
1033 .udc_stop = goku_udc_stop,
1034 .match_ep = goku_match_ep,
1039 /*-------------------------------------------------------------------------*/
1041 static inline const char *dmastr(void)
1044 return "(dma disabled)";
1045 else if (use_dma == 2)
1046 return "(dma IN and OUT)";
1051 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1053 static const char proc_node_name [] = "driver/udc";
1055 #define FOURBITS "%s%s%s%s"
1056 #define EIGHTBITS FOURBITS FOURBITS
1058 static void dump_intmask(struct seq_file *m, const char *label, u32 mask)
1060 /* int_status is the same format ... */
1061 seq_printf(m, "%s %05X =" FOURBITS EIGHTBITS EIGHTBITS "\n",
1063 (mask & INT_PWRDETECT) ? " power" : "",
1064 (mask & INT_SYSERROR) ? " sys" : "",
1065 (mask & INT_MSTRDEND) ? " in-dma" : "",
1066 (mask & INT_MSTWRTMOUT) ? " wrtmo" : "",
1068 (mask & INT_MSTWREND) ? " out-dma" : "",
1069 (mask & INT_MSTWRSET) ? " wrset" : "",
1070 (mask & INT_ERR) ? " err" : "",
1071 (mask & INT_SOF) ? " sof" : "",
1073 (mask & INT_EP3NAK) ? " ep3nak" : "",
1074 (mask & INT_EP2NAK) ? " ep2nak" : "",
1075 (mask & INT_EP1NAK) ? " ep1nak" : "",
1076 (mask & INT_EP3DATASET) ? " ep3" : "",
1078 (mask & INT_EP2DATASET) ? " ep2" : "",
1079 (mask & INT_EP1DATASET) ? " ep1" : "",
1080 (mask & INT_STATUSNAK) ? " ep0snak" : "",
1081 (mask & INT_STATUS) ? " ep0status" : "",
1083 (mask & INT_SETUP) ? " setup" : "",
1084 (mask & INT_ENDPOINT0) ? " ep0" : "",
1085 (mask & INT_USBRESET) ? " reset" : "",
1086 (mask & INT_SUSPEND) ? " suspend" : "");
1089 static const char *udc_ep_state(enum ep0state state)
1092 case EP0_DISCONNECT:
1093 return "ep0_disconnect";
1101 return "ep0_status";
1105 return "ep0_suspend";
1111 static const char *udc_ep_status(u32 status)
1113 switch (status & EPxSTATUS_EP_MASK) {
1114 case EPxSTATUS_EP_READY:
1116 case EPxSTATUS_EP_DATAIN:
1118 case EPxSTATUS_EP_FULL:
1120 case EPxSTATUS_EP_TX_ERR: /* host will retry */
1122 case EPxSTATUS_EP_RX_ERR:
1124 case EPxSTATUS_EP_BUSY: /* ep0 only */
1126 case EPxSTATUS_EP_STALL:
1128 case EPxSTATUS_EP_INVALID: /* these "can't happen" */
1135 static int udc_proc_read(struct seq_file *m, void *v)
1137 struct goku_udc *dev = m->private;
1138 struct goku_udc_regs __iomem *regs = dev->regs;
1139 unsigned long flags;
1140 int i, is_usb_connected;
1143 local_irq_save(flags);
1145 /* basic device status */
1146 tmp = readl(®s->power_detect);
1147 is_usb_connected = tmp & PW_DETECT;
1150 "%s version: %s %s\n"
1151 "Gadget driver: %s\n"
1154 pci_name(dev->pdev), driver_desc,
1155 driver_name, DRIVER_VERSION, dmastr(),
1156 dev->driver ? dev->driver->driver.name : "(none)",
1158 ? ((tmp & PW_PULLUP) ? "full speed" : "powered")
1160 udc_ep_state(dev->ep0state));
1162 dump_intmask(m, "int_status", readl(®s->int_status));
1163 dump_intmask(m, "int_enable", readl(®s->int_enable));
1165 if (!is_usb_connected || !dev->driver || (tmp & PW_PULLUP) == 0)
1168 /* registers for (active) device and ep0 */
1169 seq_printf(m, "\nirqs %lu\ndataset %02x single.bcs %02x.%02x state %x addr %u\n",
1170 dev->irqs, readl(®s->DataSet),
1171 readl(®s->EPxSingle), readl(®s->EPxBCS),
1172 readl(®s->UsbState),
1173 readl(®s->address));
1174 if (seq_has_overflowed(m))
1177 tmp = readl(®s->dma_master);
1178 seq_printf(m, "dma %03X =" EIGHTBITS "%s %s\n",
1180 (tmp & MST_EOPB_DIS) ? " eopb-" : "",
1181 (tmp & MST_EOPB_ENA) ? " eopb+" : "",
1182 (tmp & MST_TIMEOUT_DIS) ? " tmo-" : "",
1183 (tmp & MST_TIMEOUT_ENA) ? " tmo+" : "",
1185 (tmp & MST_RD_EOPB) ? " eopb" : "",
1186 (tmp & MST_RD_RESET) ? " in_reset" : "",
1187 (tmp & MST_WR_RESET) ? " out_reset" : "",
1188 (tmp & MST_RD_ENA) ? " IN" : "",
1190 (tmp & MST_WR_ENA) ? " OUT" : "",
1191 (tmp & MST_CONNECTION) ? "ep1in/ep2out" : "ep1out/ep2in");
1192 if (seq_has_overflowed(m))
1195 /* dump endpoint queues */
1196 for (i = 0; i < 4; i++) {
1197 struct goku_ep *ep = &dev->ep [i];
1198 struct goku_request *req;
1200 if (i && !ep->ep.desc)
1203 tmp = readl(ep->reg_status);
1204 seq_printf(m, "%s %s max %u %s, irqs %lu, status %02x (%s) " FOURBITS "\n",
1206 ep->is_in ? "in" : "out",
1208 ep->dma ? "dma" : "pio",
1210 tmp, udc_ep_status(tmp),
1211 (tmp & EPxSTATUS_TOGGLE) ? "data1" : "data0",
1212 (tmp & EPxSTATUS_SUSPEND) ? " suspend" : "",
1213 (tmp & EPxSTATUS_FIFO_DISABLE) ? " disable" : "",
1214 (tmp & EPxSTATUS_STAGE_ERROR) ? " ep0stat" : "");
1215 if (seq_has_overflowed(m))
1218 if (list_empty(&ep->queue)) {
1219 seq_puts(m, "\t(nothing queued)\n");
1220 if (seq_has_overflowed(m))
1224 list_for_each_entry(req, &ep->queue, queue) {
1225 if (ep->dma && req->queue.prev == &ep->queue) {
1226 if (i == UDC_MSTRD_ENDPOINT)
1227 tmp = readl(®s->in_dma_current);
1229 tmp = readl(®s->out_dma_current);
1230 tmp -= req->req.dma;
1233 tmp = req->req.actual;
1235 seq_printf(m, "\treq %p len %u/%u buf %p\n",
1236 &req->req, tmp, req->req.length,
1238 if (seq_has_overflowed(m))
1244 local_irq_restore(flags);
1247 #endif /* CONFIG_USB_GADGET_DEBUG_FILES */
1249 /*-------------------------------------------------------------------------*/
1251 static void udc_reinit (struct goku_udc *dev)
1253 static char *names [] = { "ep0", "ep1-bulk", "ep2-bulk", "ep3-bulk" };
1257 INIT_LIST_HEAD (&dev->gadget.ep_list);
1258 dev->gadget.ep0 = &dev->ep [0].ep;
1259 dev->gadget.speed = USB_SPEED_UNKNOWN;
1260 dev->ep0state = EP0_DISCONNECT;
1263 for (i = 0; i < 4; i++) {
1264 struct goku_ep *ep = &dev->ep[i];
1267 ep->ep.name = names[i];
1268 ep->reg_fifo = &dev->regs->ep_fifo [i];
1269 ep->reg_status = &dev->regs->ep_status [i];
1270 ep->reg_mode = &dev->regs->ep_mode[i];
1272 ep->ep.ops = &goku_ep_ops;
1273 list_add_tail (&ep->ep.ep_list, &dev->gadget.ep_list);
1275 INIT_LIST_HEAD (&ep->queue);
1280 ep->ep.caps.type_control = true;
1282 ep->ep.caps.type_bulk = true;
1284 ep->ep.caps.dir_in = true;
1285 ep->ep.caps.dir_out = true;
1288 dev->ep[0].reg_mode = NULL;
1289 usb_ep_set_maxpacket_limit(&dev->ep[0].ep, MAX_EP0_SIZE);
1290 list_del_init (&dev->ep[0].ep.ep_list);
1293 static void udc_reset(struct goku_udc *dev)
1295 struct goku_udc_regs __iomem *regs = dev->regs;
1297 writel(0, ®s->power_detect);
1298 writel(0, ®s->int_enable);
1299 readl(®s->int_enable);
1300 dev->int_enable = 0;
1302 /* deassert reset, leave USB D+ at hi-Z (no pullup)
1303 * don't let INT_PWRDETECT sequence begin
1306 writel(PW_RESETB, ®s->power_detect);
1307 readl(®s->int_enable);
1310 static void ep0_start(struct goku_udc *dev)
1312 struct goku_udc_regs __iomem *regs = dev->regs;
1315 VDBG(dev, "%s\n", __func__);
1319 //writel(MST_EOPB_ENA | MST_TIMEOUT_ENA, ®s->dma_master);
1321 /* hw handles set_address, set_feature, get_status; maybe more */
1322 writel( G_REQMODE_SET_INTF | G_REQMODE_GET_INTF
1323 | G_REQMODE_SET_CONF | G_REQMODE_GET_CONF
1324 | G_REQMODE_GET_DESC
1325 | G_REQMODE_CLEAR_FEAT
1328 for (i = 0; i < 4; i++)
1329 dev->ep[i].irqs = 0;
1331 /* can't modify descriptors after writing UsbReady */
1332 for (i = 0; i < DESC_LEN; i++)
1333 writel(0, ®s->descriptors[i]);
1334 writel(0, ®s->UsbReady);
1336 /* expect ep0 requests when the host drops reset */
1337 writel(PW_RESETB | PW_PULLUP, ®s->power_detect);
1338 dev->int_enable = INT_DEVWIDE | INT_EP0;
1339 writel(dev->int_enable, &dev->regs->int_enable);
1340 readl(®s->int_enable);
1341 dev->gadget.speed = USB_SPEED_FULL;
1342 dev->ep0state = EP0_IDLE;
1345 static void udc_enable(struct goku_udc *dev)
1347 /* start enumeration now, or after power detect irq */
1348 if (readl(&dev->regs->power_detect) & PW_DETECT)
1351 DBG(dev, "%s\n", __func__);
1352 dev->int_enable = INT_PWRDETECT;
1353 writel(dev->int_enable, &dev->regs->int_enable);
1357 /*-------------------------------------------------------------------------*/
1359 /* keeping it simple:
1360 * - one bus driver, initted first;
1361 * - one function driver, initted second
1364 /* when a driver is successfully registered, it will receive
1365 * control requests including set_configuration(), which enables
1366 * non-control requests. then usb traffic follows until a
1367 * disconnect is reported. then a host may connect again, or
1368 * the driver might get unbound.
1370 static int goku_udc_start(struct usb_gadget *g,
1371 struct usb_gadget_driver *driver)
1373 struct goku_udc *dev = to_goku_udc(g);
1375 /* hook up the driver */
1376 driver->driver.bus = NULL;
1377 dev->driver = driver;
1380 * then enable host detection and ep0; and we're ready
1381 * for set_configuration as well as eventual disconnect.
1388 static void stop_activity(struct goku_udc *dev)
1392 DBG (dev, "%s\n", __func__);
1394 /* disconnect gadget driver after quiesceing hw and the driver */
1396 for (i = 0; i < 4; i++)
1397 nuke(&dev->ep [i], -ESHUTDOWN);
1403 static int goku_udc_stop(struct usb_gadget *g)
1405 struct goku_udc *dev = to_goku_udc(g);
1406 unsigned long flags;
1408 spin_lock_irqsave(&dev->lock, flags);
1411 spin_unlock_irqrestore(&dev->lock, flags);
1416 /*-------------------------------------------------------------------------*/
1418 static void ep0_setup(struct goku_udc *dev)
1420 struct goku_udc_regs __iomem *regs = dev->regs;
1421 struct usb_ctrlrequest ctrl;
1424 /* read SETUP packet and enter DATA stage */
1425 ctrl.bRequestType = readl(®s->bRequestType);
1426 ctrl.bRequest = readl(®s->bRequest);
1427 ctrl.wValue = cpu_to_le16((readl(®s->wValueH) << 8)
1428 | readl(®s->wValueL));
1429 ctrl.wIndex = cpu_to_le16((readl(®s->wIndexH) << 8)
1430 | readl(®s->wIndexL));
1431 ctrl.wLength = cpu_to_le16((readl(®s->wLengthH) << 8)
1432 | readl(®s->wLengthL));
1433 writel(0, ®s->SetupRecv);
1435 nuke(&dev->ep[0], 0);
1436 dev->ep[0].stopped = 0;
1437 if (likely(ctrl.bRequestType & USB_DIR_IN)) {
1438 dev->ep[0].is_in = 1;
1439 dev->ep0state = EP0_IN;
1440 /* detect early status stages */
1441 writel(ICONTROL_STATUSNAK, &dev->regs->IntControl);
1443 dev->ep[0].is_in = 0;
1444 dev->ep0state = EP0_OUT;
1446 /* NOTE: CLEAR_FEATURE is done in software so that we can
1447 * synchronize transfer restarts after bulk IN stalls. data
1448 * won't even enter the fifo until the halt is cleared.
1450 switch (ctrl.bRequest) {
1451 case USB_REQ_CLEAR_FEATURE:
1452 switch (ctrl.bRequestType) {
1453 case USB_RECIP_ENDPOINT:
1454 tmp = le16_to_cpu(ctrl.wIndex) & 0x0f;
1455 /* active endpoint */
1457 (!dev->ep[tmp].ep.desc && tmp != 0))
1459 if (ctrl.wIndex & cpu_to_le16(
1461 if (!dev->ep[tmp].is_in)
1464 if (dev->ep[tmp].is_in)
1467 if (ctrl.wValue != cpu_to_le16(
1471 goku_clear_halt(&dev->ep[tmp]);
1473 /* start ep0out status stage */
1474 writel(~(1<<0), ®s->EOP);
1475 dev->ep[0].stopped = 1;
1476 dev->ep0state = EP0_STATUS;
1478 case USB_RECIP_DEVICE:
1479 /* device remote wakeup: always clear */
1480 if (ctrl.wValue != cpu_to_le16(1))
1482 VDBG(dev, "clear dev remote wakeup\n");
1484 case USB_RECIP_INTERFACE:
1486 default: /* pass to gadget driver */
1496 VDBG(dev, "SETUP %02x.%02x v%04x i%04x l%04x\n",
1497 ctrl.bRequestType, ctrl.bRequest,
1498 le16_to_cpu(ctrl.wValue), le16_to_cpu(ctrl.wIndex),
1499 le16_to_cpu(ctrl.wLength));
1502 /* hw wants to know when we're configured (or not) */
1503 dev->req_config = (ctrl.bRequest == USB_REQ_SET_CONFIGURATION
1504 && ctrl.bRequestType == USB_RECIP_DEVICE);
1505 if (unlikely(dev->req_config))
1506 dev->configured = (ctrl.wValue != cpu_to_le16(0));
1508 /* delegate everything to the gadget driver.
1509 * it may respond after this irq handler returns.
1511 spin_unlock (&dev->lock);
1512 tmp = dev->driver->setup(&dev->gadget, &ctrl);
1513 spin_lock (&dev->lock);
1514 if (unlikely(tmp < 0)) {
1517 VDBG(dev, "req %02x.%02x protocol STALL; err %d\n",
1518 ctrl.bRequestType, ctrl.bRequest, tmp);
1520 command(regs, COMMAND_STALL, 0);
1521 dev->ep[0].stopped = 1;
1522 dev->ep0state = EP0_STALL;
1525 /* expect at least one data or status stage irq */
1528 #define ACK(irqbit) { \
1530 writel(~irqbit, ®s->int_status); \
1534 static irqreturn_t goku_irq(int irq, void *_dev)
1536 struct goku_udc *dev = _dev;
1537 struct goku_udc_regs __iomem *regs = dev->regs;
1539 u32 stat, handled = 0;
1540 unsigned i, rescans = 5;
1542 spin_lock(&dev->lock);
1545 stat = readl(®s->int_status) & dev->int_enable;
1550 /* device-wide irqs */
1551 if (unlikely(stat & INT_DEVWIDE)) {
1552 if (stat & INT_SYSERROR) {
1553 ERROR(dev, "system error\n");
1557 // FIXME have a neater way to prevent re-enumeration
1561 if (stat & INT_PWRDETECT) {
1562 writel(~stat, ®s->int_status);
1563 if (readl(&dev->regs->power_detect) & PW_DETECT) {
1564 VDBG(dev, "connect\n");
1567 DBG(dev, "disconnect\n");
1568 if (dev->gadget.speed == USB_SPEED_FULL)
1570 dev->ep0state = EP0_DISCONNECT;
1571 dev->int_enable = INT_DEVWIDE;
1572 writel(dev->int_enable, &dev->regs->int_enable);
1578 if (stat & INT_SUSPEND) {
1580 if (readl(®s->ep_status[0]) & EPxSTATUS_SUSPEND) {
1581 switch (dev->ep0state) {
1582 case EP0_DISCONNECT:
1588 DBG(dev, "USB suspend\n");
1589 dev->ep0state = EP0_SUSPEND;
1590 if (dev->gadget.speed != USB_SPEED_UNKNOWN
1592 && dev->driver->suspend) {
1593 spin_unlock(&dev->lock);
1594 dev->driver->suspend(&dev->gadget);
1595 spin_lock(&dev->lock);
1598 if (dev->ep0state != EP0_SUSPEND) {
1599 DBG(dev, "bogus USB resume %d\n",
1603 DBG(dev, "USB resume\n");
1604 dev->ep0state = EP0_IDLE;
1605 if (dev->gadget.speed != USB_SPEED_UNKNOWN
1607 && dev->driver->resume) {
1608 spin_unlock(&dev->lock);
1609 dev->driver->resume(&dev->gadget);
1610 spin_lock(&dev->lock);
1615 if (stat & INT_USBRESET) { /* hub reset done */
1617 INFO(dev, "USB reset done, gadget %s\n",
1618 dev->driver->driver.name);
1620 // and INT_ERR on some endpoint's crc/bitstuff/... problem
1623 /* progress ep0 setup, data, or status stages.
1624 * no transition {EP0_STATUS, EP0_STALL} --> EP0_IDLE; saves irqs
1626 if (stat & INT_SETUP) {
1631 if (stat & INT_STATUSNAK) {
1632 ACK(INT_STATUSNAK|INT_ENDPOINT0);
1633 if (dev->ep0state == EP0_IN) {
1637 writel(~(1<<0), ®s->EOP);
1638 dev->ep0state = EP0_STATUS;
1641 if (stat & INT_ENDPOINT0) {
1648 /* dma completion */
1649 if (stat & INT_MSTRDEND) { /* IN */
1651 ep = &dev->ep[UDC_MSTRD_ENDPOINT];
1653 dma_advance(dev, ep);
1655 if (stat & INT_MSTWREND) { /* OUT */
1657 ep = &dev->ep[UDC_MSTWR_ENDPOINT];
1659 dma_advance(dev, ep);
1661 if (stat & INT_MSTWRTMOUT) { /* OUT */
1662 ACK(INT_MSTWRTMOUT);
1663 ep = &dev->ep[UDC_MSTWR_ENDPOINT];
1665 ERROR(dev, "%s write timeout ?\n", ep->ep.name);
1666 // reset dma? then dma_advance()
1670 for (i = 1; i < 4; i++) {
1671 u32 tmp = INT_EPxDATASET(i);
1677 if (list_empty (&ep->queue))
1678 pio_irq_disable(dev, regs, i);
1688 (void)readl(®s->int_enable);
1689 spin_unlock(&dev->lock);
1691 DBG(dev, "unhandled irq status: %05x (%05x, %05x)\n", stat,
1692 readl(®s->int_status), dev->int_enable);
1693 return IRQ_RETVAL(handled);
1698 /*-------------------------------------------------------------------------*/
1700 static void gadget_release(struct device *_dev)
1702 struct goku_udc *dev = dev_get_drvdata(_dev);
1707 /* tear down the binding between this driver and the pci device */
1709 static void goku_remove(struct pci_dev *pdev)
1711 struct goku_udc *dev = pci_get_drvdata(pdev);
1713 DBG(dev, "%s\n", __func__);
1715 usb_del_gadget_udc(&dev->gadget);
1717 BUG_ON(dev->driver);
1719 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1720 remove_proc_entry(proc_node_name, NULL);
1725 free_irq(pdev->irq, dev);
1728 if (dev->got_region)
1729 release_mem_region(pci_resource_start (pdev, 0),
1730 pci_resource_len (pdev, 0));
1732 pci_disable_device(pdev);
1736 INFO(dev, "unbind\n");
1739 /* wrap this driver around the specified pci device, but
1740 * don't respond over USB until a gadget driver binds to us.
1743 static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1745 struct goku_udc *dev = NULL;
1746 unsigned long resource, len;
1747 void __iomem *base = NULL;
1751 printk(KERN_ERR "Check PCI %s IRQ setup!\n", pci_name(pdev));
1756 /* alloc, and start init */
1757 dev = kzalloc (sizeof *dev, GFP_KERNEL);
1763 pci_set_drvdata(pdev, dev);
1764 spin_lock_init(&dev->lock);
1766 dev->gadget.ops = &goku_ops;
1767 dev->gadget.max_speed = USB_SPEED_FULL;
1769 /* the "gadget" abstracts/virtualizes the controller */
1770 dev->gadget.name = driver_name;
1772 /* now all the pci goodies ... */
1773 retval = pci_enable_device(pdev);
1775 DBG(dev, "can't enable, %d\n", retval);
1780 resource = pci_resource_start(pdev, 0);
1781 len = pci_resource_len(pdev, 0);
1782 if (!request_mem_region(resource, len, driver_name)) {
1783 DBG(dev, "controller already in use\n");
1787 dev->got_region = 1;
1789 base = ioremap(resource, len);
1791 DBG(dev, "can't map memory\n");
1795 dev->regs = (struct goku_udc_regs __iomem *) base;
1797 INFO(dev, "%s\n", driver_desc);
1798 INFO(dev, "version: " DRIVER_VERSION " %s\n", dmastr());
1799 INFO(dev, "irq %d, pci mem %p\n", pdev->irq, base);
1801 /* init to known state, then setup irqs */
1804 if (request_irq(pdev->irq, goku_irq, IRQF_SHARED,
1805 driver_name, dev) != 0) {
1806 DBG(dev, "request interrupt %d failed\n", pdev->irq);
1812 pci_set_master(pdev);
1815 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
1816 proc_create_single_data(proc_node_name, 0, NULL, udc_proc_read, dev);
1819 retval = usb_add_gadget_udc_release(&pdev->dev, &dev->gadget,
1829 /* gadget_release is not registered yet, kfree explicitly */
1835 /*-------------------------------------------------------------------------*/
1837 static const struct pci_device_id pci_ids[] = { {
1838 .class = PCI_CLASS_SERIAL_USB_DEVICE,
1840 .vendor = 0x102f, /* Toshiba */
1841 .device = 0x0107, /* this UDC */
1842 .subvendor = PCI_ANY_ID,
1843 .subdevice = PCI_ANY_ID,
1845 }, { /* end: all zeroes */ }
1847 MODULE_DEVICE_TABLE (pci, pci_ids);
1849 static struct pci_driver goku_pci_driver = {
1850 .name = driver_name,
1851 .id_table = pci_ids,
1853 .probe = goku_probe,
1854 .remove = goku_remove,
1856 /* FIXME add power management support */
1859 module_pci_driver(goku_pci_driver);