4 * Copyright (C) 2011 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 #include <linux/list.h>
19 #include <linux/module.h>
20 #include <linux/platform_device.h>
21 #include <linux/slab.h>
22 #include <linux/usb.h>
23 #include <linux/usb/hcd.h>
27 *** HARDWARE LIMITATION ***
29 * 1) renesas_usbhs has a limited number of controllable devices.
30 * it can control only 9 devices in generally.
31 * see DEVADDn / DCPMAXP / PIPEMAXP.
33 * 2) renesas_usbhs pipe number is limited.
34 * the pipe will be re-used for each devices.
35 * so, software should control DATA0/1 sequence of each devices.
43 * | udev 0 | --> it is used when set address
46 * +--------+ pipes are reused for each uep.
47 * | udev 1 |-+- [uep 0 (dcp) ] --+ pipe will be switched when
48 * +--------+ | | other device requested
49 * +- [uep 1 (bulk)] --|---+ +--------------+
50 * | +--------------> | pipe0 (dcp) |
51 * +- [uep 2 (bulk)] -@ | +--------------+
53 * +--------+ | +--------------+
54 * | udev 2 |-+- [uep 0 (dcp) ] -@ +----------> | pipe2 (bulk) |
55 * +--------+ | +--------------+
56 * +- [uep 1 (int) ] ----+ +------> | pipe3 (bulk) |
57 * | | +--------------+
58 * +--------+ +-----|------> | pipe4 (int) |
59 * | udev 3 |-+- [uep 0 (dcp) ] -@ | +--------------+
60 * +--------+ | | | .... |
61 * +- [uep 1 (bulk)] -@ | | .... |
63 * +- [uep 2 (bulk)]-----------+
65 * @ : uep requested free pipe, but all have been used.
66 * now it is waiting for free pipe
73 struct usbhsh_request {
78 struct usbhsh_device {
79 struct usb_device *usbv;
80 struct list_head ep_list_head; /* list of usbhsh_ep */
84 struct usbhs_pipe *pipe; /* attached pipe */
85 struct usbhsh_device *udev; /* attached udev */
86 struct usb_host_endpoint *ep;
87 struct list_head ep_list; /* list to usbhsh_device */
90 #define USBHSH_DEVICE_MAX 10 /* see DEVADDn / DCPMAXP / PIPEMAXP */
91 #define USBHSH_PORT_MAX 7 /* see DEVADDn :: HUBPORT */
94 struct usbhs_pipe *dcp;
96 struct usbhsh_device udev[USBHSH_DEVICE_MAX];
98 u32 port_stat; /* USB_PORT_STAT_xxx */
100 struct completion setup_ack_done;
104 static const char usbhsh_hcd_name[] = "renesas_usbhs host";
109 #define usbhsh_priv_to_hpriv(priv) \
110 container_of(usbhs_mod_get(priv, USBHS_HOST), struct usbhsh_hpriv, mod)
112 #define __usbhsh_for_each_udev(start, pos, h, i) \
113 for (i = start, pos = (h)->udev + i; \
114 i < USBHSH_DEVICE_MAX; \
115 i++, pos = (h)->udev + i)
117 #define usbhsh_for_each_udev(pos, hpriv, i) \
118 __usbhsh_for_each_udev(1, pos, hpriv, i)
120 #define usbhsh_for_each_udev_with_dev0(pos, hpriv, i) \
121 __usbhsh_for_each_udev(0, pos, hpriv, i)
123 #define usbhsh_hcd_to_hpriv(h) (struct usbhsh_hpriv *)((h)->hcd_priv)
124 #define usbhsh_hcd_to_dev(h) ((h)->self.controller)
126 #define usbhsh_hpriv_to_priv(h) ((h)->mod.priv)
127 #define usbhsh_hpriv_to_dcp(h) ((h)->dcp)
128 #define usbhsh_hpriv_to_hcd(h) \
129 container_of((void *)h, struct usb_hcd, hcd_priv)
131 #define usbhsh_ep_to_uep(u) ((u)->hcpriv)
132 #define usbhsh_uep_to_pipe(u) ((u)->pipe)
133 #define usbhsh_uep_to_udev(u) ((u)->udev)
134 #define usbhsh_uep_to_ep(u) ((u)->ep)
136 #define usbhsh_urb_to_ureq(u) ((u)->hcpriv)
137 #define usbhsh_urb_to_usbv(u) ((u)->dev)
139 #define usbhsh_usbv_to_udev(d) dev_get_drvdata(&(d)->dev)
141 #define usbhsh_udev_to_usbv(h) ((h)->usbv)
142 #define usbhsh_udev_is_used(h) usbhsh_udev_to_usbv(h)
144 #define usbhsh_pipe_to_uep(p) ((p)->mod_private)
146 #define usbhsh_device_parent(d) (usbhsh_usbv_to_udev((d)->usbv->parent))
147 #define usbhsh_device_hubport(d) ((d)->usbv->portnum)
148 #define usbhsh_device_number(h, d) ((int)((d) - (h)->udev))
149 #define usbhsh_device_nth(h, d) ((h)->udev + d)
150 #define usbhsh_device0(h) usbhsh_device_nth(h, 0)
152 #define usbhsh_port_stat_init(h) ((h)->port_stat = 0)
153 #define usbhsh_port_stat_set(h, s) ((h)->port_stat |= (s))
154 #define usbhsh_port_stat_clear(h, s) ((h)->port_stat &= ~(s))
155 #define usbhsh_port_stat_get(h) ((h)->port_stat)
157 #define usbhsh_pkt_to_ureq(p) \
158 container_of((void *)p, struct usbhsh_request, pkt)
163 static struct usbhsh_request *usbhsh_ureq_alloc(struct usbhsh_hpriv *hpriv,
167 struct usbhsh_request *ureq;
168 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
169 struct device *dev = usbhs_priv_to_dev(priv);
171 ureq = kzalloc(sizeof(struct usbhsh_request), mem_flags);
173 dev_err(dev, "ureq alloc fail\n");
177 usbhs_pkt_init(&ureq->pkt);
179 usbhsh_urb_to_ureq(urb) = ureq;
184 static void usbhsh_ureq_free(struct usbhsh_hpriv *hpriv,
185 struct usbhsh_request *ureq)
187 usbhsh_urb_to_ureq(ureq->urb) = NULL;
196 static void usbhsh_endpoint_sequence_save(struct usbhsh_hpriv *hpriv,
198 struct usbhs_pkt *pkt)
200 int len = urb->actual_length;
201 int maxp = usb_endpoint_maxp(&urb->ep->desc);
204 /* DCP is out of sequence control */
205 if (usb_pipecontrol(urb->pipe))
209 * renesas_usbhs pipe has a limitation in a number.
210 * So, driver should re-use the limited pipe for each device/endpoint.
211 * DATA0/1 sequence should be saved for it.
212 * see [image of mod_host]
213 * [HARDWARE LIMITATION]
217 * next sequence depends on actual_length
219 * ex) actual_length = 1147, maxp = 512
223 * data1 is the next sequence
233 usb_dotoggle(urb->dev,
234 usb_pipeendpoint(urb->pipe),
235 usb_pipeout(urb->pipe));
238 static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv,
241 static int usbhsh_pipe_attach(struct usbhsh_hpriv *hpriv,
244 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
245 struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
246 struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb);
247 struct usbhs_pipe *pipe;
248 struct usb_endpoint_descriptor *desc = &urb->ep->desc;
249 struct device *dev = usbhs_priv_to_dev(priv);
251 int dir_in_req = !!usb_pipein(urb->pipe);
252 int is_dcp = usb_endpoint_xfer_control(desc);
256 /******************** spin lock ********************/
257 usbhs_lock(priv, flags);
259 if (unlikely(usbhsh_uep_to_pipe(uep))) {
260 dev_err(dev, "uep already has pipe\n");
261 goto usbhsh_pipe_attach_done;
264 usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
266 /* check pipe type */
267 if (!usbhs_pipe_type_is(pipe, usb_endpoint_type(desc)))
270 /* check pipe direction if normal pipe */
272 dir_in = !!usbhs_pipe_is_dir_in(pipe);
273 if (0 != (dir_in - dir_in_req))
277 /* check pipe is free */
278 if (usbhsh_pipe_to_uep(pipe))
284 * usbhs_pipe_config_update() should be called after
285 * usbhs_set_device_config()
289 usbhsh_uep_to_pipe(uep) = pipe;
290 usbhsh_pipe_to_uep(pipe) = uep;
292 usbhs_pipe_config_update(pipe,
293 usbhsh_device_number(hpriv, udev),
294 usb_endpoint_num(desc),
295 usb_endpoint_maxp(desc));
297 dev_dbg(dev, "%s [%d-%d(%s:%s)]\n", __func__,
298 usbhsh_device_number(hpriv, udev),
299 usb_endpoint_num(desc),
300 usbhs_pipe_name(pipe),
301 dir_in_req ? "in" : "out");
307 usbhsh_pipe_attach_done:
308 usbhs_unlock(priv, flags);
309 /******************** spin unlock ******************/
314 static void usbhsh_pipe_detach(struct usbhsh_hpriv *hpriv,
315 struct usbhsh_ep *uep)
317 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
318 struct usbhs_pipe *pipe;
319 struct device *dev = usbhs_priv_to_dev(priv);
322 /******************** spin lock ********************/
323 usbhs_lock(priv, flags);
325 pipe = usbhsh_uep_to_pipe(uep);
327 if (unlikely(!pipe)) {
328 dev_err(dev, "uep doens't have pipe\n");
330 struct usb_host_endpoint *ep = usbhsh_uep_to_ep(uep);
331 struct usbhsh_device *udev = usbhsh_uep_to_udev(uep);
333 /* detach pipe from uep */
334 usbhsh_uep_to_pipe(uep) = NULL;
335 usbhsh_pipe_to_uep(pipe) = NULL;
337 dev_dbg(dev, "%s [%d-%d(%s)]\n", __func__,
338 usbhsh_device_number(hpriv, udev),
339 usb_endpoint_num(&ep->desc),
340 usbhs_pipe_name(pipe));
343 usbhs_unlock(priv, flags);
344 /******************** spin unlock ******************/
350 static int usbhsh_endpoint_attach(struct usbhsh_hpriv *hpriv,
354 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
355 struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb);
356 struct usb_host_endpoint *ep = urb->ep;
357 struct usbhsh_ep *uep;
358 struct device *dev = usbhs_priv_to_dev(priv);
359 struct usb_endpoint_descriptor *desc = &ep->desc;
362 uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags);
364 dev_err(dev, "usbhsh_ep alloc fail\n");
368 /******************** spin lock ********************/
369 usbhs_lock(priv, flags);
374 INIT_LIST_HEAD(&uep->ep_list);
375 list_add_tail(&uep->ep_list, &udev->ep_list_head);
377 usbhsh_uep_to_udev(uep) = udev;
378 usbhsh_uep_to_ep(uep) = ep;
379 usbhsh_ep_to_uep(ep) = uep;
381 usbhs_unlock(priv, flags);
382 /******************** spin unlock ******************/
384 dev_dbg(dev, "%s [%d-%d]\n", __func__,
385 usbhsh_device_number(hpriv, udev),
386 usb_endpoint_num(desc));
391 static void usbhsh_endpoint_detach(struct usbhsh_hpriv *hpriv,
392 struct usb_host_endpoint *ep)
394 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
395 struct device *dev = usbhs_priv_to_dev(priv);
396 struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep);
402 dev_dbg(dev, "%s [%d-%d]\n", __func__,
403 usbhsh_device_number(hpriv, usbhsh_uep_to_udev(uep)),
404 usb_endpoint_num(&ep->desc));
406 if (usbhsh_uep_to_pipe(uep))
407 usbhsh_pipe_detach(hpriv, uep);
409 /******************** spin lock ********************/
410 usbhs_lock(priv, flags);
412 /* remove this endpoint from udev */
413 list_del_init(&uep->ep_list);
415 usbhsh_uep_to_udev(uep) = NULL;
416 usbhsh_uep_to_ep(uep) = NULL;
417 usbhsh_ep_to_uep(ep) = NULL;
419 usbhs_unlock(priv, flags);
420 /******************** spin unlock ******************/
425 static void usbhsh_endpoint_detach_all(struct usbhsh_hpriv *hpriv,
426 struct usbhsh_device *udev)
428 struct usbhsh_ep *uep, *next;
430 list_for_each_entry_safe(uep, next, &udev->ep_list_head, ep_list)
431 usbhsh_endpoint_detach(hpriv, usbhsh_uep_to_ep(uep));
437 static int usbhsh_connected_to_rhdev(struct usb_hcd *hcd,
438 struct usbhsh_device *udev)
440 struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
442 return hcd->self.root_hub == usbv->parent;
445 static int usbhsh_device_has_endpoint(struct usbhsh_device *udev)
447 return !list_empty(&udev->ep_list_head);
450 static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv,
453 struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
454 struct usbhsh_device *udev = usbhsh_usbv_to_udev(usbv);
456 /* usbhsh_device_attach() is still not called */
460 /* if it is device0, return it */
461 if (0 == usb_pipedevice(urb->pipe))
462 return usbhsh_device0(hpriv);
464 /* return attached device */
468 static struct usbhsh_device *usbhsh_device_attach(struct usbhsh_hpriv *hpriv,
471 struct usbhsh_device *udev = NULL;
472 struct usbhsh_device *udev0 = usbhsh_device0(hpriv);
473 struct usbhsh_device *pos;
474 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
475 struct device *dev = usbhsh_hcd_to_dev(hcd);
476 struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
477 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
483 * This function should be called only while urb is pointing to device0.
484 * It will attach unused usbhsh_device to urb (usbv),
485 * and initialize device0.
486 * You can use usbhsh_device_get() to get "current" udev,
487 * and usbhsh_usbv_to_udev() is for "attached" udev.
489 if (0 != usb_pipedevice(urb->pipe)) {
490 dev_err(dev, "%s fail: urb isn't pointing device0\n", __func__);
494 /******************** spin lock ********************/
495 usbhs_lock(priv, flags);
500 usbhsh_for_each_udev(pos, hpriv, i) {
501 if (usbhsh_udev_is_used(pos))
509 * usbhsh_usbv_to_udev()
510 * usbhsh_udev_to_usbv()
513 dev_set_drvdata(&usbv->dev, udev);
517 usbhs_unlock(priv, flags);
518 /******************** spin unlock ******************/
521 dev_err(dev, "no free usbhsh_device\n");
525 if (usbhsh_device_has_endpoint(udev)) {
526 dev_warn(dev, "udev have old endpoint\n");
527 usbhsh_endpoint_detach_all(hpriv, udev);
530 if (usbhsh_device_has_endpoint(udev0)) {
531 dev_warn(dev, "udev0 have old endpoint\n");
532 usbhsh_endpoint_detach_all(hpriv, udev0);
535 /* uep will be attached */
536 INIT_LIST_HEAD(&udev0->ep_list_head);
537 INIT_LIST_HEAD(&udev->ep_list_head);
542 usbhs_set_device_config(priv,
543 0, 0, 0, usbv->speed);
546 * set new device config
550 if (!usbhsh_connected_to_rhdev(hcd, udev)) {
551 /* if udev is not connected to rhdev, it means parent is Hub */
552 struct usbhsh_device *parent = usbhsh_device_parent(udev);
554 upphub = usbhsh_device_number(hpriv, parent);
555 hubport = usbhsh_device_hubport(udev);
557 dev_dbg(dev, "%s connecte to Hub [%d:%d](%p)\n", __func__,
558 upphub, hubport, parent);
561 usbhs_set_device_config(priv,
562 usbhsh_device_number(hpriv, udev),
563 upphub, hubport, usbv->speed);
565 dev_dbg(dev, "%s [%d](%p)\n", __func__,
566 usbhsh_device_number(hpriv, udev), udev);
571 static void usbhsh_device_detach(struct usbhsh_hpriv *hpriv,
572 struct usbhsh_device *udev)
574 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
575 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
576 struct device *dev = usbhsh_hcd_to_dev(hcd);
577 struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
580 dev_dbg(dev, "%s [%d](%p)\n", __func__,
581 usbhsh_device_number(hpriv, udev), udev);
583 if (usbhsh_device_has_endpoint(udev)) {
584 dev_warn(dev, "udev still have endpoint\n");
585 usbhsh_endpoint_detach_all(hpriv, udev);
589 * There is nothing to do if it is device0.
591 * usbhsh_device_attach()
592 * usbhsh_device_get()
594 if (0 == usbhsh_device_number(hpriv, udev))
597 /******************** spin lock ********************/
598 usbhs_lock(priv, flags);
601 * usbhsh_usbv_to_udev()
602 * usbhsh_udev_to_usbv()
605 dev_set_drvdata(&usbv->dev, NULL);
608 usbhs_unlock(priv, flags);
609 /******************** spin unlock ******************/
615 static void usbhsh_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
617 struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt);
618 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
619 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
620 struct urb *urb = ureq->urb;
621 struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
622 struct device *dev = usbhs_priv_to_dev(priv);
624 dev_dbg(dev, "%s\n", __func__);
627 dev_warn(dev, "pkt doesn't have urb\n");
631 urb->actual_length = pkt->actual;
632 usbhsh_ureq_free(hpriv, ureq);
634 usbhsh_endpoint_sequence_save(hpriv, urb, pkt);
635 usbhsh_pipe_detach(hpriv, uep);
637 usb_hcd_unlink_urb_from_ep(hcd, urb);
638 usb_hcd_giveback_urb(hcd, urb, 0);
641 static int usbhsh_queue_push(struct usb_hcd *hcd,
645 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
646 struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
647 struct usbhs_pipe *pipe = usbhsh_uep_to_pipe(uep);
648 struct device *dev = usbhsh_hcd_to_dev(hcd);
649 struct usbhsh_request *ureq;
653 if (usb_pipeisoc(urb->pipe)) {
654 dev_err(dev, "pipe iso is not supported now\n");
658 /* this ureq will be freed on usbhsh_queue_done() */
659 ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags);
660 if (unlikely(!ureq)) {
661 dev_err(dev, "ureq alloc fail\n");
665 if (usb_pipein(urb->pipe))
666 pipe->handler = &usbhs_fifo_pio_pop_handler;
668 pipe->handler = &usbhs_fifo_pio_push_handler;
670 buf = (void *)(urb->transfer_buffer + urb->actual_length);
671 len = urb->transfer_buffer_length - urb->actual_length;
673 sequence = usb_gettoggle(urb->dev,
674 usb_pipeendpoint(urb->pipe),
675 usb_pipeout(urb->pipe));
677 dev_dbg(dev, "%s\n", __func__);
678 usbhs_pkt_push(pipe, &ureq->pkt, usbhsh_queue_done,
679 buf, len, (urb->transfer_flags & URB_ZERO_PACKET),
682 usbhs_pkt_start(pipe);
690 static int usbhsh_is_request_address(struct urb *urb)
692 struct usb_ctrlrequest *req;
694 req = (struct usb_ctrlrequest *)urb->setup_packet;
696 if ((DeviceOutRequest == req->bRequestType << 8) &&
697 (USB_REQ_SET_ADDRESS == req->bRequest))
703 static void usbhsh_setup_stage_packet_push(struct usbhsh_hpriv *hpriv,
705 struct usbhs_pipe *pipe)
707 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
708 struct usb_ctrlrequest req;
709 struct device *dev = usbhs_priv_to_dev(priv);
712 * wait setup packet ACK
714 * usbhsh_irq_setup_ack()
715 * usbhsh_irq_setup_err()
717 init_completion(&hpriv->setup_ack_done);
719 /* copy original request */
720 memcpy(&req, urb->setup_packet, sizeof(struct usb_ctrlrequest));
723 * renesas_usbhs can not use original usb address.
724 * see HARDWARE LIMITATION.
725 * modify usb address here to use attached device.
726 * see usbhsh_device_attach()
728 if (usbhsh_is_request_address(urb)) {
729 struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
730 struct usbhsh_device *udev = usbhsh_usbv_to_udev(usbv);
732 /* udev is a attached device */
733 req.wValue = usbhsh_device_number(hpriv, udev);
734 dev_dbg(dev, "create new address - %d\n", req.wValue);
738 usbhs_usbreq_set_val(priv, &req);
741 * wait setup packet ACK
743 wait_for_completion(&hpriv->setup_ack_done);
745 dev_dbg(dev, "%s done\n", __func__);
751 static void usbhsh_data_stage_packet_done(struct usbhs_priv *priv,
752 struct usbhs_pkt *pkt)
754 struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt);
755 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
757 /* this ureq was connected to urb when usbhsh_urb_enqueue() */
759 usbhsh_ureq_free(hpriv, ureq);
762 static int usbhsh_data_stage_packet_push(struct usbhsh_hpriv *hpriv,
764 struct usbhs_pipe *pipe,
768 struct usbhsh_request *ureq;
770 /* this ureq will be freed on usbhsh_data_stage_packet_done() */
771 ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags);
775 if (usb_pipein(urb->pipe))
776 pipe->handler = &usbhs_dcp_data_stage_in_handler;
778 pipe->handler = &usbhs_dcp_data_stage_out_handler;
780 usbhs_pkt_push(pipe, &ureq->pkt,
781 usbhsh_data_stage_packet_done,
782 urb->transfer_buffer,
783 urb->transfer_buffer_length,
784 (urb->transfer_flags & URB_ZERO_PACKET),
793 static int usbhsh_status_stage_packet_push(struct usbhsh_hpriv *hpriv,
795 struct usbhs_pipe *pipe,
798 struct usbhsh_request *ureq;
800 /* This ureq will be freed on usbhsh_queue_done() */
801 ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags);
805 if (usb_pipein(urb->pipe))
806 pipe->handler = &usbhs_dcp_status_stage_in_handler;
808 pipe->handler = &usbhs_dcp_status_stage_out_handler;
810 usbhs_pkt_push(pipe, &ureq->pkt,
813 urb->transfer_buffer_length,
819 static int usbhsh_dcp_queue_push(struct usb_hcd *hcd,
823 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
824 struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
825 struct usbhs_pipe *pipe = usbhsh_uep_to_pipe(uep);
826 struct device *dev = usbhsh_hcd_to_dev(hcd);
829 dev_dbg(dev, "%s\n", __func__);
834 * usbhsh_send_setup_stage_packet() wait SACK/SIGN
836 usbhsh_setup_stage_packet_push(hpriv, urb, pipe);
841 * It is pushed only when urb has buffer.
843 if (urb->transfer_buffer_length) {
844 ret = usbhsh_data_stage_packet_push(hpriv, urb, pipe, mflags);
846 dev_err(dev, "data stage failed\n");
854 ret = usbhsh_status_stage_packet_push(hpriv, urb, pipe, mflags);
856 dev_err(dev, "status stage failed\n");
861 * start pushed packets
863 usbhs_pkt_start(pipe);
871 static int usbhsh_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
879 static int usbhsh_host_start(struct usb_hcd *hcd)
884 static void usbhsh_host_stop(struct usb_hcd *hcd)
888 static int usbhsh_urb_enqueue(struct usb_hcd *hcd,
892 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
893 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
894 struct device *dev = usbhs_priv_to_dev(priv);
895 struct usb_host_endpoint *ep = urb->ep;
896 struct usbhsh_device *new_udev = NULL;
897 int is_dir_in = usb_pipein(urb->pipe);
901 dev_dbg(dev, "%s (%s)\n", __func__, is_dir_in ? "in" : "out");
903 ret = usb_hcd_link_urb_to_ep(hcd, urb);
905 goto usbhsh_urb_enqueue_error_not_linked;
908 * attach udev if needed
909 * see [image of mod_host]
911 if (!usbhsh_device_get(hpriv, urb)) {
912 new_udev = usbhsh_device_attach(hpriv, urb);
915 goto usbhsh_urb_enqueue_error_not_linked;
920 * attach endpoint if needed
921 * see [image of mod_host]
923 if (!usbhsh_ep_to_uep(ep)) {
924 ret = usbhsh_endpoint_attach(hpriv, urb, mem_flags);
926 goto usbhsh_urb_enqueue_error_free_device;
930 * attach pipe to endpoint
931 * see [image of mod_host]
933 for (i = 0; i < 1024; i++) {
934 ret = usbhsh_pipe_attach(hpriv, urb);
941 goto usbhsh_urb_enqueue_error_free_endpoint;
946 if (usb_pipecontrol(urb->pipe))
947 ret = usbhsh_dcp_queue_push(hcd, urb, mem_flags);
949 ret = usbhsh_queue_push(hcd, urb, mem_flags);
953 usbhsh_urb_enqueue_error_free_endpoint:
954 usbhsh_endpoint_detach(hpriv, ep);
955 usbhsh_urb_enqueue_error_free_device:
957 usbhsh_device_detach(hpriv, new_udev);
958 usbhsh_urb_enqueue_error_not_linked:
960 dev_dbg(dev, "%s error\n", __func__);
965 static int usbhsh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
967 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
968 struct usbhsh_request *ureq = usbhsh_urb_to_ureq(urb);
971 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
972 struct usbhs_pkt *pkt = &ureq->pkt;
974 usbhs_pkt_pop(pkt->pipe, pkt);
975 usbhsh_queue_done(priv, pkt);
981 static void usbhsh_endpoint_disable(struct usb_hcd *hcd,
982 struct usb_host_endpoint *ep)
984 struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep);
985 struct usbhsh_device *udev;
986 struct usbhsh_hpriv *hpriv;
989 * this function might be called manytimes by same hcd/ep
990 * in-endpoint == out-endpoint if ep == dcp.
995 udev = usbhsh_uep_to_udev(uep);
996 hpriv = usbhsh_hcd_to_hpriv(hcd);
998 usbhsh_endpoint_detach(hpriv, ep);
1001 * if there is no endpoint,
1004 if (!usbhsh_device_has_endpoint(udev))
1005 usbhsh_device_detach(hpriv, udev);
1008 static int usbhsh_hub_status_data(struct usb_hcd *hcd, char *buf)
1010 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
1011 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1012 struct device *dev = usbhs_priv_to_dev(priv);
1013 int roothub_id = 1; /* only 1 root hub */
1016 * does port stat was changed ?
1017 * check USB_PORT_STAT_C_xxx << 16
1019 if (usbhsh_port_stat_get(hpriv) & 0xFFFF0000)
1020 *buf = (1 << roothub_id);
1024 dev_dbg(dev, "%s (%02x)\n", __func__, *buf);
1029 static int __usbhsh_hub_hub_feature(struct usbhsh_hpriv *hpriv,
1030 u16 typeReq, u16 wValue,
1031 u16 wIndex, char *buf, u16 wLength)
1033 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1034 struct device *dev = usbhs_priv_to_dev(priv);
1037 case C_HUB_OVER_CURRENT:
1038 case C_HUB_LOCAL_POWER:
1039 dev_dbg(dev, "%s :: C_HUB_xx\n", __func__);
1046 static int __usbhsh_hub_port_feature(struct usbhsh_hpriv *hpriv,
1047 u16 typeReq, u16 wValue,
1048 u16 wIndex, char *buf, u16 wLength)
1050 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1051 struct device *dev = usbhs_priv_to_dev(priv);
1052 int enable = (typeReq == SetPortFeature);
1053 int speed, i, timeout = 128;
1054 int roothub_id = 1; /* only 1 root hub */
1057 if (wIndex > roothub_id || wLength != 0)
1062 case USB_PORT_FEAT_POWER:
1063 usbhs_vbus_ctrl(priv, enable);
1064 dev_dbg(dev, "%s :: USB_PORT_FEAT_POWER\n", __func__);
1067 case USB_PORT_FEAT_ENABLE:
1068 case USB_PORT_FEAT_SUSPEND:
1069 case USB_PORT_FEAT_C_ENABLE:
1070 case USB_PORT_FEAT_C_SUSPEND:
1071 case USB_PORT_FEAT_C_CONNECTION:
1072 case USB_PORT_FEAT_C_OVER_CURRENT:
1073 case USB_PORT_FEAT_C_RESET:
1074 dev_dbg(dev, "%s :: USB_PORT_FEAT_xxx\n", __func__);
1077 case USB_PORT_FEAT_RESET:
1081 usbhsh_port_stat_clear(hpriv,
1082 USB_PORT_STAT_HIGH_SPEED |
1083 USB_PORT_STAT_LOW_SPEED);
1085 usbhs_bus_send_reset(priv);
1087 usbhs_bus_send_sof_enable(priv);
1089 for (i = 0; i < timeout ; i++) {
1090 switch (usbhs_bus_get_speed(priv)) {
1092 speed = USB_PORT_STAT_LOW_SPEED;
1093 goto got_usb_bus_speed;
1094 case USB_SPEED_HIGH:
1095 speed = USB_PORT_STAT_HIGH_SPEED;
1096 goto got_usb_bus_speed;
1097 case USB_SPEED_FULL:
1099 goto got_usb_bus_speed;
1107 usbhsh_port_stat_set(hpriv, speed);
1108 usbhsh_port_stat_set(hpriv, USB_PORT_STAT_ENABLE);
1110 dev_dbg(dev, "%s :: USB_PORT_FEAT_RESET (speed = %d)\n",
1113 /* status change is not needed */
1120 /* set/clear status */
1122 usbhsh_port_stat_set(hpriv, (1 << wValue));
1124 usbhsh_port_stat_clear(hpriv, (1 << wValue));
1129 static int __usbhsh_hub_get_status(struct usbhsh_hpriv *hpriv,
1130 u16 typeReq, u16 wValue,
1131 u16 wIndex, char *buf, u16 wLength)
1133 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1134 struct usb_hub_descriptor *desc = (struct usb_hub_descriptor *)buf;
1135 struct device *dev = usbhs_priv_to_dev(priv);
1136 int roothub_id = 1; /* only 1 root hub */
1140 dev_dbg(dev, "%s :: GetHubStatus\n", __func__);
1146 if (wIndex != roothub_id)
1149 dev_dbg(dev, "%s :: GetPortStatus\n", __func__);
1150 *(__le32 *)buf = cpu_to_le32(usbhsh_port_stat_get(hpriv));
1153 case GetHubDescriptor:
1154 desc->bDescriptorType = 0x29;
1155 desc->bHubContrCurrent = 0;
1156 desc->bNbrPorts = roothub_id;
1157 desc->bDescLength = 9;
1158 desc->bPwrOn2PwrGood = 0;
1159 desc->wHubCharacteristics = cpu_to_le16(0x0011);
1160 desc->u.hs.DeviceRemovable[0] = (roothub_id << 1);
1161 desc->u.hs.DeviceRemovable[1] = ~0;
1162 dev_dbg(dev, "%s :: GetHubDescriptor\n", __func__);
1169 static int usbhsh_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
1170 u16 wIndex, char *buf, u16 wLength)
1172 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
1173 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1174 struct device *dev = usbhs_priv_to_dev(priv);
1180 case ClearHubFeature:
1182 ret = __usbhsh_hub_hub_feature(hpriv, typeReq,
1183 wValue, wIndex, buf, wLength);
1187 case SetPortFeature:
1188 case ClearPortFeature:
1189 ret = __usbhsh_hub_port_feature(hpriv, typeReq,
1190 wValue, wIndex, buf, wLength);
1196 case GetHubDescriptor:
1197 ret = __usbhsh_hub_get_status(hpriv, typeReq,
1198 wValue, wIndex, buf, wLength);
1202 dev_dbg(dev, "typeReq = %x, ret = %d, port_stat = %x\n",
1203 typeReq, ret, usbhsh_port_stat_get(hpriv));
1208 static struct hc_driver usbhsh_driver = {
1209 .description = usbhsh_hcd_name,
1210 .hcd_priv_size = sizeof(struct usbhsh_hpriv),
1213 * generic hardware linkage
1217 .start = usbhsh_host_start,
1218 .stop = usbhsh_host_stop,
1221 * managing i/o requests and associated device resources
1223 .urb_enqueue = usbhsh_urb_enqueue,
1224 .urb_dequeue = usbhsh_urb_dequeue,
1225 .endpoint_disable = usbhsh_endpoint_disable,
1230 .hub_status_data = usbhsh_hub_status_data,
1231 .hub_control = usbhsh_hub_control,
1235 * interrupt functions
1237 static int usbhsh_irq_attch(struct usbhs_priv *priv,
1238 struct usbhs_irq_state *irq_state)
1240 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1241 struct device *dev = usbhs_priv_to_dev(priv);
1243 dev_dbg(dev, "device attached\n");
1245 usbhsh_port_stat_set(hpriv, USB_PORT_STAT_CONNECTION);
1246 usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16);
1249 * attch interrupt might happen infinitely on some device
1250 * (on self power USB hub ?)
1253 hpriv->mod.irq_attch = NULL;
1254 usbhs_irq_callback_update(priv, &hpriv->mod);
1259 static int usbhsh_irq_dtch(struct usbhs_priv *priv,
1260 struct usbhs_irq_state *irq_state)
1262 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1263 struct device *dev = usbhs_priv_to_dev(priv);
1265 dev_dbg(dev, "device detached\n");
1267 usbhsh_port_stat_clear(hpriv, USB_PORT_STAT_CONNECTION);
1268 usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16);
1271 * enable attch interrupt again
1273 hpriv->mod.irq_attch = usbhsh_irq_attch;
1274 usbhs_irq_callback_update(priv, &hpriv->mod);
1279 static int usbhsh_irq_setup_ack(struct usbhs_priv *priv,
1280 struct usbhs_irq_state *irq_state)
1282 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1283 struct device *dev = usbhs_priv_to_dev(priv);
1285 dev_dbg(dev, "setup packet OK\n");
1287 complete(&hpriv->setup_ack_done); /* see usbhsh_urb_enqueue() */
1292 static int usbhsh_irq_setup_err(struct usbhs_priv *priv,
1293 struct usbhs_irq_state *irq_state)
1295 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1296 struct device *dev = usbhs_priv_to_dev(priv);
1298 dev_dbg(dev, "setup packet Err\n");
1300 complete(&hpriv->setup_ack_done); /* see usbhsh_urb_enqueue() */
1308 static void usbhsh_pipe_init_for_host(struct usbhs_priv *priv)
1310 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1311 struct usbhs_pipe *pipe;
1312 u32 *pipe_type = usbhs_get_dparam(priv, pipe_type);
1313 int pipe_size = usbhs_get_dparam(priv, pipe_size);
1314 int old_type, dir_in, i;
1317 old_type = USB_ENDPOINT_XFER_CONTROL;
1318 for (i = 0; i < pipe_size; i++) {
1321 * data "output" will be finished as soon as possible,
1322 * but there is no guaranty at data "input" case.
1324 * "input" needs "standby" pipe.
1325 * So, "input" direction pipe > "output" direction pipe
1328 * 1st USB_ENDPOINT_XFER_xxx will be output direction,
1329 * and the other will be input direction here.
1333 * USB_ENDPOINT_XFER_ISOC -> dir out
1334 * USB_ENDPOINT_XFER_ISOC -> dir in
1335 * USB_ENDPOINT_XFER_BULK -> dir out
1336 * USB_ENDPOINT_XFER_BULK -> dir in
1337 * USB_ENDPOINT_XFER_BULK -> dir in
1340 dir_in = (pipe_type[i] == old_type);
1341 old_type = pipe_type[i];
1343 if (USB_ENDPOINT_XFER_CONTROL == pipe_type[i]) {
1344 pipe = usbhs_dcp_malloc(priv);
1345 usbhsh_hpriv_to_dcp(hpriv) = pipe;
1347 pipe = usbhs_pipe_malloc(priv,
1352 pipe->mod_private = NULL;
1356 static int usbhsh_start(struct usbhs_priv *priv)
1358 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1359 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
1360 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
1361 struct device *dev = usbhs_priv_to_dev(priv);
1365 ret = usb_add_hcd(hcd, 0, 0);
1370 * pipe initialize and enable DCP
1372 usbhs_pipe_init(priv,
1373 usbhsh_dma_map_ctrl);
1374 usbhs_fifo_init(priv);
1375 usbhsh_pipe_init_for_host(priv);
1378 * system config enble
1383 usbhs_sys_host_ctrl(priv, 1);
1386 * enable irq callback
1388 mod->irq_attch = usbhsh_irq_attch;
1389 mod->irq_dtch = usbhsh_irq_dtch;
1390 mod->irq_sack = usbhsh_irq_setup_ack;
1391 mod->irq_sign = usbhsh_irq_setup_err;
1392 usbhs_irq_callback_update(priv, mod);
1394 dev_dbg(dev, "start host\n");
1399 static int usbhsh_stop(struct usbhs_priv *priv)
1401 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1402 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
1403 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
1404 struct device *dev = usbhs_priv_to_dev(priv);
1407 * disable irq callback
1409 mod->irq_attch = NULL;
1410 mod->irq_dtch = NULL;
1411 mod->irq_sack = NULL;
1412 mod->irq_sign = NULL;
1413 usbhs_irq_callback_update(priv, mod);
1415 usb_remove_hcd(hcd);
1418 usbhs_sys_host_ctrl(priv, 0);
1420 dev_dbg(dev, "quit host\n");
1425 int usbhs_mod_host_probe(struct usbhs_priv *priv)
1427 struct usbhsh_hpriv *hpriv;
1428 struct usb_hcd *hcd;
1429 struct usbhsh_device *udev;
1430 struct device *dev = usbhs_priv_to_dev(priv);
1433 /* initialize hcd */
1434 hcd = usb_create_hcd(&usbhsh_driver, dev, usbhsh_hcd_name);
1436 dev_err(dev, "Failed to create hcd\n");
1443 * There is no guarantee that it is possible to access usb module here.
1444 * Don't accesses to it.
1445 * The accesse will be enable after "usbhsh_start"
1448 hpriv = usbhsh_hcd_to_hpriv(hcd);
1453 usbhs_mod_register(priv, &hpriv->mod, USBHS_HOST);
1456 hpriv->mod.name = "host";
1457 hpriv->mod.start = usbhsh_start;
1458 hpriv->mod.stop = usbhsh_stop;
1459 usbhsh_port_stat_init(hpriv);
1461 /* init all device */
1462 usbhsh_for_each_udev_with_dev0(udev, hpriv, i) {
1464 INIT_LIST_HEAD(&udev->ep_list_head);
1467 dev_info(dev, "host probed\n");
1472 int usbhs_mod_host_remove(struct usbhs_priv *priv)
1474 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1475 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);