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1/*
2 * Renesas USB driver
3 *
4 * Copyright (C) 2011 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
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.
11 *
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
15 *
16 */
17#include <linux/io.h>
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>
24#include "common.h"
25
26/*
27 *** HARDWARE LIMITATION ***
28 *
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.
32 *
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.
36 */
37
38
39/*
40 * image of mod_host
41 *
42 * +--------+
43 * | udev 0 | --> it is used when set address
44 * +--------+
45 *
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)] -@ | +--------------+
52 * | | pipe1 (isoc) |
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)] -@ | | .... |
62 * | |
63 * +- [uep 2 (bulk)]-----------+
64 *
65 * @ : uep requested free pipe, but all have been used.
66 * now it is waiting for free pipe
67 */
68
69
70/*
71 * struct
72 */
73struct usbhsh_request {
74 struct urb *urb;
75 struct usbhs_pkt pkt;
76};
77
78struct usbhsh_device {
79 struct usb_device *usbv;
80 struct list_head ep_list_head; /* list of usbhsh_ep */
81};
82
83struct 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 */
88};
89
90#define USBHSH_DEVICE_MAX 10 /* see DEVADDn / DCPMAXP / PIPEMAXP */
91#define USBHSH_PORT_MAX 7 /* see DEVADDn :: HUBPORT */
92struct usbhsh_hpriv {
93 struct usbhs_mod mod;
94 struct usbhs_pipe *dcp;
95
96 struct usbhsh_device udev[USBHSH_DEVICE_MAX];
97
98 u32 port_stat; /* USB_PORT_STAT_xxx */
99
100 struct completion setup_ack_done;
101};
102
103
104static const char usbhsh_hcd_name[] = "renesas_usbhs host";
105
106/*
107 * macro
108 */
109#define usbhsh_priv_to_hpriv(priv) \
110 container_of(usbhs_mod_get(priv, USBHS_HOST), struct usbhsh_hpriv, mod)
111
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)
116
117#define usbhsh_for_each_udev(pos, hpriv, i) \
118 __usbhsh_for_each_udev(1, pos, hpriv, i)
119
120#define usbhsh_for_each_udev_with_dev0(pos, hpriv, i) \
121 __usbhsh_for_each_udev(0, pos, hpriv, i)
122
123#define usbhsh_hcd_to_hpriv(h) (struct usbhsh_hpriv *)((h)->hcd_priv)
124#define usbhsh_hcd_to_dev(h) ((h)->self.controller)
125
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)
130
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)
135
136#define usbhsh_urb_to_ureq(u) ((u)->hcpriv)
137#define usbhsh_urb_to_usbv(u) ((u)->dev)
138
139#define usbhsh_usbv_to_udev(d) dev_get_drvdata(&(d)->dev)
140
141#define usbhsh_udev_to_usbv(h) ((h)->usbv)
142#define usbhsh_udev_is_used(h) usbhsh_udev_to_usbv(h)
143
144#define usbhsh_pipe_to_uep(p) ((p)->mod_private)
145
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)
151
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)
156
157#define usbhsh_pkt_to_ureq(p) \
158 container_of((void *)p, struct usbhsh_request, pkt)
159
160/*
161 * req alloc/free
162 */
163static struct usbhsh_request *usbhsh_ureq_alloc(struct usbhsh_hpriv *hpriv,
164 struct urb *urb,
165 gfp_t mem_flags)
166{
167 struct usbhsh_request *ureq;
168 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
169 struct device *dev = usbhs_priv_to_dev(priv);
170
171 ureq = kzalloc(sizeof(struct usbhsh_request), mem_flags);
172 if (!ureq) {
173 dev_err(dev, "ureq alloc fail\n");
174 return NULL;
175 }
176
177 usbhs_pkt_init(&ureq->pkt);
178 ureq->urb = urb;
179 usbhsh_urb_to_ureq(urb) = ureq;
180
181 return ureq;
182}
183
184static void usbhsh_ureq_free(struct usbhsh_hpriv *hpriv,
185 struct usbhsh_request *ureq)
186{
187 usbhsh_urb_to_ureq(ureq->urb) = NULL;
188 ureq->urb = NULL;
189
190 kfree(ureq);
191}
192
193/*
194 * status
195 */
196static int usbhsh_is_running(struct usbhsh_hpriv *hpriv)
197{
198 /*
199 * we can decide some device is attached or not
200 * by checking mod.irq_attch
201 * see
202 * usbhsh_irq_attch()
203 * usbhsh_irq_dtch()
204 */
205 return (hpriv->mod.irq_attch == NULL);
206}
207
208/*
209 * pipe control
210 */
211static void usbhsh_endpoint_sequence_save(struct usbhsh_hpriv *hpriv,
212 struct urb *urb,
213 struct usbhs_pkt *pkt)
214{
215 int len = urb->actual_length;
216 int maxp = usb_endpoint_maxp(&urb->ep->desc);
217 int t = 0;
218
219 /* DCP is out of sequence control */
220 if (usb_pipecontrol(urb->pipe))
221 return;
222
223 /*
224 * renesas_usbhs pipe has a limitation in a number.
225 * So, driver should re-use the limited pipe for each device/endpoint.
226 * DATA0/1 sequence should be saved for it.
227 * see [image of mod_host]
228 * [HARDWARE LIMITATION]
229 */
230
231 /*
232 * next sequence depends on actual_length
233 *
234 * ex) actual_length = 1147, maxp = 512
235 * data0 : 512
236 * data1 : 512
237 * data0 : 123
238 * data1 is the next sequence
239 */
240 t = len / maxp;
241 if (len % maxp)
242 t++;
243 if (pkt->zero)
244 t++;
245 t %= 2;
246
247 if (t)
248 usb_dotoggle(urb->dev,
249 usb_pipeendpoint(urb->pipe),
250 usb_pipeout(urb->pipe));
251}
252
253static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv,
254 struct urb *urb);
255
256static int usbhsh_pipe_attach(struct usbhsh_hpriv *hpriv,
257 struct urb *urb)
258{
259 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
260 struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
261 struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb);
262 struct usbhs_pipe *pipe;
263 struct usb_endpoint_descriptor *desc = &urb->ep->desc;
264 struct device *dev = usbhs_priv_to_dev(priv);
265 unsigned long flags;
266 int dir_in_req = !!usb_pipein(urb->pipe);
267 int is_dcp = usb_endpoint_xfer_control(desc);
268 int i, dir_in;
269 int ret = -EBUSY;
270
271 /******************** spin lock ********************/
272 usbhs_lock(priv, flags);
273
274 if (unlikely(usbhsh_uep_to_pipe(uep))) {
275 dev_err(dev, "uep already has pipe\n");
276 goto usbhsh_pipe_attach_done;
277 }
278
279 usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
280
281 /* check pipe type */
282 if (!usbhs_pipe_type_is(pipe, usb_endpoint_type(desc)))
283 continue;
284
285 /* check pipe direction if normal pipe */
286 if (!is_dcp) {
287 dir_in = !!usbhs_pipe_is_dir_in(pipe);
288 if (0 != (dir_in - dir_in_req))
289 continue;
290 }
291
292 /* check pipe is free */
293 if (usbhsh_pipe_to_uep(pipe))
294 continue;
295
296 /*
297 * attach pipe to uep
298 *
299 * usbhs_pipe_config_update() should be called after
300 * usbhs_set_device_config()
301 * see
302 * DCPMAXP/PIPEMAXP
303 */
304 usbhsh_uep_to_pipe(uep) = pipe;
305 usbhsh_pipe_to_uep(pipe) = uep;
306
307 usbhs_pipe_config_update(pipe,
308 usbhsh_device_number(hpriv, udev),
309 usb_endpoint_num(desc),
310 usb_endpoint_maxp(desc));
311
312 dev_dbg(dev, "%s [%d-%d(%s:%s)]\n", __func__,
313 usbhsh_device_number(hpriv, udev),
314 usb_endpoint_num(desc),
315 usbhs_pipe_name(pipe),
316 dir_in_req ? "in" : "out");
317
318 ret = 0;
319 break;
320 }
321
322usbhsh_pipe_attach_done:
323 usbhs_unlock(priv, flags);
324 /******************** spin unlock ******************/
325
326 return ret;
327}
328
329static void usbhsh_pipe_detach(struct usbhsh_hpriv *hpriv,
330 struct usbhsh_ep *uep)
331{
332 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
333 struct usbhs_pipe *pipe;
334 struct device *dev = usbhs_priv_to_dev(priv);
335 unsigned long flags;
336
337 /******************** spin lock ********************/
338 usbhs_lock(priv, flags);
339
340 pipe = usbhsh_uep_to_pipe(uep);
341
342 if (unlikely(!pipe)) {
343 dev_err(dev, "uep doens't have pipe\n");
344 } else {
345 struct usb_host_endpoint *ep = usbhsh_uep_to_ep(uep);
346 struct usbhsh_device *udev = usbhsh_uep_to_udev(uep);
347
348 /* detach pipe from uep */
349 usbhsh_uep_to_pipe(uep) = NULL;
350 usbhsh_pipe_to_uep(pipe) = NULL;
351
352 dev_dbg(dev, "%s [%d-%d(%s)]\n", __func__,
353 usbhsh_device_number(hpriv, udev),
354 usb_endpoint_num(&ep->desc),
355 usbhs_pipe_name(pipe));
356 }
357
358 usbhs_unlock(priv, flags);
359 /******************** spin unlock ******************/
360}
361
362/*
363 * endpoint control
364 */
365static int usbhsh_endpoint_attach(struct usbhsh_hpriv *hpriv,
366 struct urb *urb,
367 gfp_t mem_flags)
368{
369 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
370 struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb);
371 struct usb_host_endpoint *ep = urb->ep;
372 struct usbhsh_ep *uep;
373 struct device *dev = usbhs_priv_to_dev(priv);
374 struct usb_endpoint_descriptor *desc = &ep->desc;
375 unsigned long flags;
376
377 uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags);
378 if (!uep) {
379 dev_err(dev, "usbhsh_ep alloc fail\n");
380 return -ENOMEM;
381 }
382
383 /******************** spin lock ********************/
384 usbhs_lock(priv, flags);
385
386 /*
387 * init endpoint
388 */
389 INIT_LIST_HEAD(&uep->ep_list);
390 list_add_tail(&uep->ep_list, &udev->ep_list_head);
391
392 usbhsh_uep_to_udev(uep) = udev;
393 usbhsh_uep_to_ep(uep) = ep;
394 usbhsh_ep_to_uep(ep) = uep;
395
396 usbhs_unlock(priv, flags);
397 /******************** spin unlock ******************/
398
399 dev_dbg(dev, "%s [%d-%d]\n", __func__,
400 usbhsh_device_number(hpriv, udev),
401 usb_endpoint_num(desc));
402
403 return 0;
404}
405
406static void usbhsh_endpoint_detach(struct usbhsh_hpriv *hpriv,
407 struct usb_host_endpoint *ep)
408{
409 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
410 struct device *dev = usbhs_priv_to_dev(priv);
411 struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep);
412 unsigned long flags;
413
414 if (!uep)
415 return;
416
417 dev_dbg(dev, "%s [%d-%d]\n", __func__,
418 usbhsh_device_number(hpriv, usbhsh_uep_to_udev(uep)),
419 usb_endpoint_num(&ep->desc));
420
421 if (usbhsh_uep_to_pipe(uep))
422 usbhsh_pipe_detach(hpriv, uep);
423
424 /******************** spin lock ********************/
425 usbhs_lock(priv, flags);
426
427 /* remove this endpoint from udev */
428 list_del_init(&uep->ep_list);
429
430 usbhsh_uep_to_udev(uep) = NULL;
431 usbhsh_uep_to_ep(uep) = NULL;
432 usbhsh_ep_to_uep(ep) = NULL;
433
434 usbhs_unlock(priv, flags);
435 /******************** spin unlock ******************/
436
437 kfree(uep);
438}
439
440static void usbhsh_endpoint_detach_all(struct usbhsh_hpriv *hpriv,
441 struct usbhsh_device *udev)
442{
443 struct usbhsh_ep *uep, *next;
444
445 list_for_each_entry_safe(uep, next, &udev->ep_list_head, ep_list)
446 usbhsh_endpoint_detach(hpriv, usbhsh_uep_to_ep(uep));
447}
448
449/*
450 * device control
451 */
452static int usbhsh_connected_to_rhdev(struct usb_hcd *hcd,
453 struct usbhsh_device *udev)
454{
455 struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
456
457 return hcd->self.root_hub == usbv->parent;
458}
459
460static int usbhsh_device_has_endpoint(struct usbhsh_device *udev)
461{
462 return !list_empty(&udev->ep_list_head);
463}
464
465static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv,
466 struct urb *urb)
467{
468 struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
469 struct usbhsh_device *udev = usbhsh_usbv_to_udev(usbv);
470
471 /* usbhsh_device_attach() is still not called */
472 if (!udev)
473 return NULL;
474
475 /* if it is device0, return it */
476 if (0 == usb_pipedevice(urb->pipe))
477 return usbhsh_device0(hpriv);
478
479 /* return attached device */
480 return udev;
481}
482
483static struct usbhsh_device *usbhsh_device_attach(struct usbhsh_hpriv *hpriv,
484 struct urb *urb)
485{
486 struct usbhsh_device *udev = NULL;
487 struct usbhsh_device *udev0 = usbhsh_device0(hpriv);
488 struct usbhsh_device *pos;
489 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
490 struct device *dev = usbhsh_hcd_to_dev(hcd);
491 struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
492 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
493 unsigned long flags;
494 u16 upphub, hubport;
495 int i;
496
497 /*
498 * This function should be called only while urb is pointing to device0.
499 * It will attach unused usbhsh_device to urb (usbv),
500 * and initialize device0.
501 * You can use usbhsh_device_get() to get "current" udev,
502 * and usbhsh_usbv_to_udev() is for "attached" udev.
503 */
504 if (0 != usb_pipedevice(urb->pipe)) {
505 dev_err(dev, "%s fail: urb isn't pointing device0\n", __func__);
506 return NULL;
507 }
508
509 /******************** spin lock ********************/
510 usbhs_lock(priv, flags);
511
512 /*
513 * find unused device
514 */
515 usbhsh_for_each_udev(pos, hpriv, i) {
516 if (usbhsh_udev_is_used(pos))
517 continue;
518 udev = pos;
519 break;
520 }
521
522 if (udev) {
523 /*
524 * usbhsh_usbv_to_udev()
525 * usbhsh_udev_to_usbv()
526 * will be enable
527 */
528 dev_set_drvdata(&usbv->dev, udev);
529 udev->usbv = usbv;
530 }
531
532 usbhs_unlock(priv, flags);
533 /******************** spin unlock ******************/
534
535 if (!udev) {
536 dev_err(dev, "no free usbhsh_device\n");
537 return NULL;
538 }
539
540 if (usbhsh_device_has_endpoint(udev)) {
541 dev_warn(dev, "udev have old endpoint\n");
542 usbhsh_endpoint_detach_all(hpriv, udev);
543 }
544
545 if (usbhsh_device_has_endpoint(udev0)) {
546 dev_warn(dev, "udev0 have old endpoint\n");
547 usbhsh_endpoint_detach_all(hpriv, udev0);
548 }
549
550 /* uep will be attached */
551 INIT_LIST_HEAD(&udev0->ep_list_head);
552 INIT_LIST_HEAD(&udev->ep_list_head);
553
554 /*
555 * set device0 config
556 */
557 usbhs_set_device_config(priv,
558 0, 0, 0, usbv->speed);
559
560 /*
561 * set new device config
562 */
563 upphub = 0;
564 hubport = 0;
565 if (!usbhsh_connected_to_rhdev(hcd, udev)) {
566 /* if udev is not connected to rhdev, it means parent is Hub */
567 struct usbhsh_device *parent = usbhsh_device_parent(udev);
568
569 upphub = usbhsh_device_number(hpriv, parent);
570 hubport = usbhsh_device_hubport(udev);
571
572 dev_dbg(dev, "%s connecte to Hub [%d:%d](%p)\n", __func__,
573 upphub, hubport, parent);
574 }
575
576 usbhs_set_device_config(priv,
577 usbhsh_device_number(hpriv, udev),
578 upphub, hubport, usbv->speed);
579
580 dev_dbg(dev, "%s [%d](%p)\n", __func__,
581 usbhsh_device_number(hpriv, udev), udev);
582
583 return udev;
584}
585
586static void usbhsh_device_detach(struct usbhsh_hpriv *hpriv,
587 struct usbhsh_device *udev)
588{
589 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
590 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
591 struct device *dev = usbhsh_hcd_to_dev(hcd);
592 struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
593 unsigned long flags;
594
595 dev_dbg(dev, "%s [%d](%p)\n", __func__,
596 usbhsh_device_number(hpriv, udev), udev);
597
598 if (usbhsh_device_has_endpoint(udev)) {
599 dev_warn(dev, "udev still have endpoint\n");
600 usbhsh_endpoint_detach_all(hpriv, udev);
601 }
602
603 /*
604 * There is nothing to do if it is device0.
605 * see
606 * usbhsh_device_attach()
607 * usbhsh_device_get()
608 */
609 if (0 == usbhsh_device_number(hpriv, udev))
610 return;
611
612 /******************** spin lock ********************/
613 usbhs_lock(priv, flags);
614
615 /*
616 * usbhsh_usbv_to_udev()
617 * usbhsh_udev_to_usbv()
618 * will be disable
619 */
620 dev_set_drvdata(&usbv->dev, NULL);
621 udev->usbv = NULL;
622
623 usbhs_unlock(priv, flags);
624 /******************** spin unlock ******************/
625}
626
627/*
628 * queue push/pop
629 */
630static void usbhsh_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
631{
632 struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt);
633 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
634 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
635 struct urb *urb = ureq->urb;
636 struct device *dev = usbhs_priv_to_dev(priv);
637 int status = 0;
638
639 dev_dbg(dev, "%s\n", __func__);
640
641 if (!urb) {
642 dev_warn(dev, "pkt doesn't have urb\n");
643 return;
644 }
645
646 if (!usbhsh_is_running(hpriv))
647 status = -ESHUTDOWN;
648
649 urb->actual_length = pkt->actual;
650 usbhsh_ureq_free(hpriv, ureq);
651
652 usbhsh_endpoint_sequence_save(hpriv, urb, pkt);
653 usbhsh_pipe_detach(hpriv, usbhsh_ep_to_uep(urb->ep));
654
655 usb_hcd_unlink_urb_from_ep(hcd, urb);
656 usb_hcd_giveback_urb(hcd, urb, status);
657}
658
659static int usbhsh_queue_push(struct usb_hcd *hcd,
660 struct urb *urb,
661 gfp_t mem_flags)
662{
663 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
664 struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
665 struct usbhs_pipe *pipe = usbhsh_uep_to_pipe(uep);
666 struct device *dev = usbhsh_hcd_to_dev(hcd);
667 struct usbhsh_request *ureq;
668 void *buf;
669 int len, sequence;
670
671 if (usb_pipeisoc(urb->pipe)) {
672 dev_err(dev, "pipe iso is not supported now\n");
673 return -EIO;
674 }
675
676 /* this ureq will be freed on usbhsh_queue_done() */
677 ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags);
678 if (unlikely(!ureq)) {
679 dev_err(dev, "ureq alloc fail\n");
680 return -ENOMEM;
681 }
682
683 if (usb_pipein(urb->pipe))
684 pipe->handler = &usbhs_fifo_pio_pop_handler;
685 else
686 pipe->handler = &usbhs_fifo_pio_push_handler;
687
688 buf = (void *)(urb->transfer_buffer + urb->actual_length);
689 len = urb->transfer_buffer_length - urb->actual_length;
690
691 sequence = usb_gettoggle(urb->dev,
692 usb_pipeendpoint(urb->pipe),
693 usb_pipeout(urb->pipe));
694
695 dev_dbg(dev, "%s\n", __func__);
696 usbhs_pkt_push(pipe, &ureq->pkt, usbhsh_queue_done,
697 buf, len, (urb->transfer_flags & URB_ZERO_PACKET),
698 sequence);
699
700 usbhs_pkt_start(pipe);
701
702 return 0;
703}
704
705static void usbhsh_queue_force_pop(struct usbhs_priv *priv,
706 struct usbhs_pipe *pipe)
707{
708 struct usbhs_pkt *pkt;
709
710 while (1) {
711 pkt = usbhs_pkt_pop(pipe, NULL);
712 if (!pkt)
713 break;
714
715 /*
716 * if all packet are gone, usbhsh_endpoint_disable()
717 * will be called.
718 * then, attached device/endpoint/pipe will be detached
719 */
720 usbhsh_queue_done(priv, pkt);
721 }
722}
723
724static void usbhsh_queue_force_pop_all(struct usbhs_priv *priv)
725{
726 struct usbhs_pipe *pos;
727 int i;
728
729 usbhs_for_each_pipe_with_dcp(pos, priv, i)
730 usbhsh_queue_force_pop(priv, pos);
731}
732
733/*
734 * DCP setup stage
735 */
736static int usbhsh_is_request_address(struct urb *urb)
737{
738 struct usb_ctrlrequest *req;
739
740 req = (struct usb_ctrlrequest *)urb->setup_packet;
741
742 if ((DeviceOutRequest == req->bRequestType << 8) &&
743 (USB_REQ_SET_ADDRESS == req->bRequest))
744 return 1;
745 else
746 return 0;
747}
748
749static void usbhsh_setup_stage_packet_push(struct usbhsh_hpriv *hpriv,
750 struct urb *urb,
751 struct usbhs_pipe *pipe)
752{
753 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
754 struct usb_ctrlrequest req;
755 struct device *dev = usbhs_priv_to_dev(priv);
756
757 /*
758 * wait setup packet ACK
759 * see
760 * usbhsh_irq_setup_ack()
761 * usbhsh_irq_setup_err()
762 */
763 init_completion(&hpriv->setup_ack_done);
764
765 /* copy original request */
766 memcpy(&req, urb->setup_packet, sizeof(struct usb_ctrlrequest));
767
768 /*
769 * renesas_usbhs can not use original usb address.
770 * see HARDWARE LIMITATION.
771 * modify usb address here to use attached device.
772 * see usbhsh_device_attach()
773 */
774 if (usbhsh_is_request_address(urb)) {
775 struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
776 struct usbhsh_device *udev = usbhsh_usbv_to_udev(usbv);
777
778 /* udev is a attached device */
779 req.wValue = usbhsh_device_number(hpriv, udev);
780 dev_dbg(dev, "create new address - %d\n", req.wValue);
781 }
782
783 /* set request */
784 usbhs_usbreq_set_val(priv, &req);
785
786 /*
787 * wait setup packet ACK
788 */
789 wait_for_completion(&hpriv->setup_ack_done);
790
791 dev_dbg(dev, "%s done\n", __func__);
792}
793
794/*
795 * DCP data stage
796 */
797static void usbhsh_data_stage_packet_done(struct usbhs_priv *priv,
798 struct usbhs_pkt *pkt)
799{
800 struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt);
801 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
802
803 /* this ureq was connected to urb when usbhsh_urb_enqueue() */
804
805 usbhsh_ureq_free(hpriv, ureq);
806}
807
808static int usbhsh_data_stage_packet_push(struct usbhsh_hpriv *hpriv,
809 struct urb *urb,
810 struct usbhs_pipe *pipe,
811 gfp_t mem_flags)
812
813{
814 struct usbhsh_request *ureq;
815
816 /* this ureq will be freed on usbhsh_data_stage_packet_done() */
817 ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags);
818 if (unlikely(!ureq))
819 return -ENOMEM;
820
821 if (usb_pipein(urb->pipe))
822 pipe->handler = &usbhs_dcp_data_stage_in_handler;
823 else
824 pipe->handler = &usbhs_dcp_data_stage_out_handler;
825
826 usbhs_pkt_push(pipe, &ureq->pkt,
827 usbhsh_data_stage_packet_done,
828 urb->transfer_buffer,
829 urb->transfer_buffer_length,
830 (urb->transfer_flags & URB_ZERO_PACKET),
831 -1);
832
833 return 0;
834}
835
836/*
837 * DCP status stage
838 */
839static int usbhsh_status_stage_packet_push(struct usbhsh_hpriv *hpriv,
840 struct urb *urb,
841 struct usbhs_pipe *pipe,
842 gfp_t mem_flags)
843{
844 struct usbhsh_request *ureq;
845
846 /* This ureq will be freed on usbhsh_queue_done() */
847 ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags);
848 if (unlikely(!ureq))
849 return -ENOMEM;
850
851 if (usb_pipein(urb->pipe))
852 pipe->handler = &usbhs_dcp_status_stage_in_handler;
853 else
854 pipe->handler = &usbhs_dcp_status_stage_out_handler;
855
856 usbhs_pkt_push(pipe, &ureq->pkt,
857 usbhsh_queue_done,
858 NULL,
859 urb->transfer_buffer_length,
860 0, -1);
861
862 return 0;
863}
864
865static int usbhsh_dcp_queue_push(struct usb_hcd *hcd,
866 struct urb *urb,
867 gfp_t mflags)
868{
869 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
870 struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
871 struct usbhs_pipe *pipe = usbhsh_uep_to_pipe(uep);
872 struct device *dev = usbhsh_hcd_to_dev(hcd);
873 int ret;
874
875 dev_dbg(dev, "%s\n", __func__);
876
877 /*
878 * setup stage
879 *
880 * usbhsh_send_setup_stage_packet() wait SACK/SIGN
881 */
882 usbhsh_setup_stage_packet_push(hpriv, urb, pipe);
883
884 /*
885 * data stage
886 *
887 * It is pushed only when urb has buffer.
888 */
889 if (urb->transfer_buffer_length) {
890 ret = usbhsh_data_stage_packet_push(hpriv, urb, pipe, mflags);
891 if (ret < 0) {
892 dev_err(dev, "data stage failed\n");
893 return ret;
894 }
895 }
896
897 /*
898 * status stage
899 */
900 ret = usbhsh_status_stage_packet_push(hpriv, urb, pipe, mflags);
901 if (ret < 0) {
902 dev_err(dev, "status stage failed\n");
903 return ret;
904 }
905
906 /*
907 * start pushed packets
908 */
909 usbhs_pkt_start(pipe);
910
911 return 0;
912}
913
914/*
915 * dma map functions
916 */
917static int usbhsh_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
918{
919 return 0;
920}
921
922/*
923 * for hc_driver
924 */
925static int usbhsh_host_start(struct usb_hcd *hcd)
926{
927 return 0;
928}
929
930static void usbhsh_host_stop(struct usb_hcd *hcd)
931{
932}
933
934static int usbhsh_urb_enqueue(struct usb_hcd *hcd,
935 struct urb *urb,
936 gfp_t mem_flags)
937{
938 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
939 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
940 struct device *dev = usbhs_priv_to_dev(priv);
941 struct usb_host_endpoint *ep = urb->ep;
942 struct usbhsh_device *new_udev = NULL;
943 int is_dir_in = usb_pipein(urb->pipe);
944 int i;
945 int ret;
946
947 dev_dbg(dev, "%s (%s)\n", __func__, is_dir_in ? "in" : "out");
948
949 if (!usbhsh_is_running(hpriv)) {
950 ret = -EIO;
951 dev_err(dev, "host is not running\n");
952 goto usbhsh_urb_enqueue_error_not_linked;
953 }
954
955 ret = usb_hcd_link_urb_to_ep(hcd, urb);
956 if (ret) {
957 dev_err(dev, "urb link failed\n");
958 goto usbhsh_urb_enqueue_error_not_linked;
959 }
960
961 /*
962 * attach udev if needed
963 * see [image of mod_host]
964 */
965 if (!usbhsh_device_get(hpriv, urb)) {
966 new_udev = usbhsh_device_attach(hpriv, urb);
967 if (!new_udev) {
968 ret = -EIO;
969 dev_err(dev, "device attach failed\n");
970 goto usbhsh_urb_enqueue_error_not_linked;
971 }
972 }
973
974 /*
975 * attach endpoint if needed
976 * see [image of mod_host]
977 */
978 if (!usbhsh_ep_to_uep(ep)) {
979 ret = usbhsh_endpoint_attach(hpriv, urb, mem_flags);
980 if (ret < 0) {
981 dev_err(dev, "endpoint attach failed\n");
982 goto usbhsh_urb_enqueue_error_free_device;
983 }
984 }
985
986 /*
987 * attach pipe to endpoint
988 * see [image of mod_host]
989 */
990 for (i = 0; i < 1024; i++) {
991 ret = usbhsh_pipe_attach(hpriv, urb);
992 if (ret < 0)
993 msleep(100);
994 else
995 break;
996 }
997 if (ret < 0) {
998 dev_err(dev, "pipe attach failed\n");
999 goto usbhsh_urb_enqueue_error_free_endpoint;
1000 }
1001
1002 /*
1003 * push packet
1004 */
1005 if (usb_pipecontrol(urb->pipe))
1006 ret = usbhsh_dcp_queue_push(hcd, urb, mem_flags);
1007 else
1008 ret = usbhsh_queue_push(hcd, urb, mem_flags);
1009
1010 return ret;
1011
1012usbhsh_urb_enqueue_error_free_endpoint:
1013 usbhsh_endpoint_detach(hpriv, ep);
1014usbhsh_urb_enqueue_error_free_device:
1015 if (new_udev)
1016 usbhsh_device_detach(hpriv, new_udev);
1017usbhsh_urb_enqueue_error_not_linked:
1018
1019 dev_dbg(dev, "%s error\n", __func__);
1020
1021 return ret;
1022}
1023
1024static int usbhsh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
1025{
1026 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
1027 struct usbhsh_request *ureq = usbhsh_urb_to_ureq(urb);
1028
1029 if (ureq) {
1030 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1031 struct usbhs_pkt *pkt = &ureq->pkt;
1032
1033 usbhs_pkt_pop(pkt->pipe, pkt);
1034 usbhsh_queue_done(priv, pkt);
1035 }
1036
1037 return 0;
1038}
1039
1040static void usbhsh_endpoint_disable(struct usb_hcd *hcd,
1041 struct usb_host_endpoint *ep)
1042{
1043 struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep);
1044 struct usbhsh_device *udev;
1045 struct usbhsh_hpriv *hpriv;
1046
1047 /*
1048 * this function might be called manytimes by same hcd/ep
1049 * in-endpoint == out-endpoint if ep == dcp.
1050 */
1051 if (!uep)
1052 return;
1053
1054 udev = usbhsh_uep_to_udev(uep);
1055 hpriv = usbhsh_hcd_to_hpriv(hcd);
1056
1057 usbhsh_endpoint_detach(hpriv, ep);
1058
1059 /*
1060 * if there is no endpoint,
1061 * free device
1062 */
1063 if (!usbhsh_device_has_endpoint(udev))
1064 usbhsh_device_detach(hpriv, udev);
1065}
1066
1067static int usbhsh_hub_status_data(struct usb_hcd *hcd, char *buf)
1068{
1069 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
1070 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1071 struct device *dev = usbhs_priv_to_dev(priv);
1072 int roothub_id = 1; /* only 1 root hub */
1073
1074 /*
1075 * does port stat was changed ?
1076 * check USB_PORT_STAT_C_xxx << 16
1077 */
1078 if (usbhsh_port_stat_get(hpriv) & 0xFFFF0000)
1079 *buf = (1 << roothub_id);
1080 else
1081 *buf = 0;
1082
1083 dev_dbg(dev, "%s (%02x)\n", __func__, *buf);
1084
1085 return !!(*buf);
1086}
1087
1088static int __usbhsh_hub_hub_feature(struct usbhsh_hpriv *hpriv,
1089 u16 typeReq, u16 wValue,
1090 u16 wIndex, char *buf, u16 wLength)
1091{
1092 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1093 struct device *dev = usbhs_priv_to_dev(priv);
1094
1095 switch (wValue) {
1096 case C_HUB_OVER_CURRENT:
1097 case C_HUB_LOCAL_POWER:
1098 dev_dbg(dev, "%s :: C_HUB_xx\n", __func__);
1099 return 0;
1100 }
1101
1102 return -EPIPE;
1103}
1104
1105static int __usbhsh_hub_port_feature(struct usbhsh_hpriv *hpriv,
1106 u16 typeReq, u16 wValue,
1107 u16 wIndex, char *buf, u16 wLength)
1108{
1109 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1110 struct device *dev = usbhs_priv_to_dev(priv);
1111 int enable = (typeReq == SetPortFeature);
1112 int speed, i, timeout = 128;
1113 int roothub_id = 1; /* only 1 root hub */
1114
1115 /* common error */
1116 if (wIndex > roothub_id || wLength != 0)
1117 return -EPIPE;
1118
1119 /* check wValue */
1120 switch (wValue) {
1121 case USB_PORT_FEAT_POWER:
1122 usbhs_vbus_ctrl(priv, enable);
1123 dev_dbg(dev, "%s :: USB_PORT_FEAT_POWER\n", __func__);
1124 break;
1125
1126 case USB_PORT_FEAT_ENABLE:
1127 case USB_PORT_FEAT_SUSPEND:
1128 case USB_PORT_FEAT_C_ENABLE:
1129 case USB_PORT_FEAT_C_SUSPEND:
1130 case USB_PORT_FEAT_C_CONNECTION:
1131 case USB_PORT_FEAT_C_OVER_CURRENT:
1132 case USB_PORT_FEAT_C_RESET:
1133 dev_dbg(dev, "%s :: USB_PORT_FEAT_xxx\n", __func__);
1134 break;
1135
1136 case USB_PORT_FEAT_RESET:
1137 if (!enable)
1138 break;
1139
1140 usbhsh_port_stat_clear(hpriv,
1141 USB_PORT_STAT_HIGH_SPEED |
1142 USB_PORT_STAT_LOW_SPEED);
1143
1144 usbhsh_queue_force_pop_all(priv);
1145
1146 usbhs_bus_send_reset(priv);
1147 msleep(20);
1148 usbhs_bus_send_sof_enable(priv);
1149
1150 for (i = 0; i < timeout ; i++) {
1151 switch (usbhs_bus_get_speed(priv)) {
1152 case USB_SPEED_LOW:
1153 speed = USB_PORT_STAT_LOW_SPEED;
1154 goto got_usb_bus_speed;
1155 case USB_SPEED_HIGH:
1156 speed = USB_PORT_STAT_HIGH_SPEED;
1157 goto got_usb_bus_speed;
1158 case USB_SPEED_FULL:
1159 speed = 0;
1160 goto got_usb_bus_speed;
1161 }
1162
1163 msleep(20);
1164 }
1165 return -EPIPE;
1166
1167got_usb_bus_speed:
1168 usbhsh_port_stat_set(hpriv, speed);
1169 usbhsh_port_stat_set(hpriv, USB_PORT_STAT_ENABLE);
1170
1171 dev_dbg(dev, "%s :: USB_PORT_FEAT_RESET (speed = %d)\n",
1172 __func__, speed);
1173
1174 /* status change is not needed */
1175 return 0;
1176
1177 default:
1178 return -EPIPE;
1179 }
1180
1181 /* set/clear status */
1182 if (enable)
1183 usbhsh_port_stat_set(hpriv, (1 << wValue));
1184 else
1185 usbhsh_port_stat_clear(hpriv, (1 << wValue));
1186
1187 return 0;
1188}
1189
1190static int __usbhsh_hub_get_status(struct usbhsh_hpriv *hpriv,
1191 u16 typeReq, u16 wValue,
1192 u16 wIndex, char *buf, u16 wLength)
1193{
1194 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1195 struct usb_hub_descriptor *desc = (struct usb_hub_descriptor *)buf;
1196 struct device *dev = usbhs_priv_to_dev(priv);
1197 int roothub_id = 1; /* only 1 root hub */
1198
1199 switch (typeReq) {
1200 case GetHubStatus:
1201 dev_dbg(dev, "%s :: GetHubStatus\n", __func__);
1202
1203 *buf = 0x00;
1204 break;
1205
1206 case GetPortStatus:
1207 if (wIndex != roothub_id)
1208 return -EPIPE;
1209
1210 dev_dbg(dev, "%s :: GetPortStatus\n", __func__);
1211 *(__le32 *)buf = cpu_to_le32(usbhsh_port_stat_get(hpriv));
1212 break;
1213
1214 case GetHubDescriptor:
1215 desc->bDescriptorType = 0x29;
1216 desc->bHubContrCurrent = 0;
1217 desc->bNbrPorts = roothub_id;
1218 desc->bDescLength = 9;
1219 desc->bPwrOn2PwrGood = 0;
1220 desc->wHubCharacteristics = cpu_to_le16(0x0011);
1221 desc->u.hs.DeviceRemovable[0] = (roothub_id << 1);
1222 desc->u.hs.DeviceRemovable[1] = ~0;
1223 dev_dbg(dev, "%s :: GetHubDescriptor\n", __func__);
1224 break;
1225 }
1226
1227 return 0;
1228}
1229
1230static int usbhsh_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
1231 u16 wIndex, char *buf, u16 wLength)
1232{
1233 struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
1234 struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
1235 struct device *dev = usbhs_priv_to_dev(priv);
1236 int ret = -EPIPE;
1237
1238 switch (typeReq) {
1239
1240 /* Hub Feature */
1241 case ClearHubFeature:
1242 case SetHubFeature:
1243 ret = __usbhsh_hub_hub_feature(hpriv, typeReq,
1244 wValue, wIndex, buf, wLength);
1245 break;
1246
1247 /* Port Feature */
1248 case SetPortFeature:
1249 case ClearPortFeature:
1250 ret = __usbhsh_hub_port_feature(hpriv, typeReq,
1251 wValue, wIndex, buf, wLength);
1252 break;
1253
1254 /* Get status */
1255 case GetHubStatus:
1256 case GetPortStatus:
1257 case GetHubDescriptor:
1258 ret = __usbhsh_hub_get_status(hpriv, typeReq,
1259 wValue, wIndex, buf, wLength);
1260 break;
1261 }
1262
1263 dev_dbg(dev, "typeReq = %x, ret = %d, port_stat = %x\n",
1264 typeReq, ret, usbhsh_port_stat_get(hpriv));
1265
1266 return ret;
1267}
1268
1269static struct hc_driver usbhsh_driver = {
1270 .description = usbhsh_hcd_name,
1271 .hcd_priv_size = sizeof(struct usbhsh_hpriv),
1272
1273 /*
1274 * generic hardware linkage
1275 */
1276 .flags = HCD_USB2,
1277
1278 .start = usbhsh_host_start,
1279 .stop = usbhsh_host_stop,
1280
1281 /*
1282 * managing i/o requests and associated device resources
1283 */
1284 .urb_enqueue = usbhsh_urb_enqueue,
1285 .urb_dequeue = usbhsh_urb_dequeue,
1286 .endpoint_disable = usbhsh_endpoint_disable,
1287
1288 /*
1289 * root hub
1290 */
1291 .hub_status_data = usbhsh_hub_status_data,
1292 .hub_control = usbhsh_hub_control,
1293};
1294
1295/*
1296 * interrupt functions
1297 */
1298static int usbhsh_irq_attch(struct usbhs_priv *priv,
1299 struct usbhs_irq_state *irq_state)
1300{
1301 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1302 struct device *dev = usbhs_priv_to_dev(priv);
1303
1304 dev_dbg(dev, "device attached\n");
1305
1306 usbhsh_port_stat_set(hpriv, USB_PORT_STAT_CONNECTION);
1307 usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16);
1308
1309 /*
1310 * attch interrupt might happen infinitely on some device
1311 * (on self power USB hub ?)
1312 * disable it here.
1313 *
1314 * usbhsh_is_running() becomes effective
1315 * according to this process.
1316 * see
1317 * usbhsh_is_running()
1318 * usbhsh_urb_enqueue()
1319 */
1320 hpriv->mod.irq_attch = NULL;
1321 usbhs_irq_callback_update(priv, &hpriv->mod);
1322
1323 return 0;
1324}
1325
1326static int usbhsh_irq_dtch(struct usbhs_priv *priv,
1327 struct usbhs_irq_state *irq_state)
1328{
1329 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1330 struct device *dev = usbhs_priv_to_dev(priv);
1331
1332 dev_dbg(dev, "device detached\n");
1333
1334 usbhsh_port_stat_clear(hpriv, USB_PORT_STAT_CONNECTION);
1335 usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16);
1336
1337 /*
1338 * enable attch interrupt again
1339 *
1340 * usbhsh_is_running() becomes invalid
1341 * according to this process.
1342 * see
1343 * usbhsh_is_running()
1344 * usbhsh_urb_enqueue()
1345 */
1346 hpriv->mod.irq_attch = usbhsh_irq_attch;
1347 usbhs_irq_callback_update(priv, &hpriv->mod);
1348
1349 /*
1350 * usbhsh_queue_force_pop_all() should be called
1351 * after usbhsh_is_running() becomes invalid.
1352 */
1353 usbhsh_queue_force_pop_all(priv);
1354
1355 return 0;
1356}
1357
1358static int usbhsh_irq_setup_ack(struct usbhs_priv *priv,
1359 struct usbhs_irq_state *irq_state)
1360{
1361 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1362 struct device *dev = usbhs_priv_to_dev(priv);
1363
1364 dev_dbg(dev, "setup packet OK\n");
1365
1366 complete(&hpriv->setup_ack_done); /* see usbhsh_urb_enqueue() */
1367
1368 return 0;
1369}
1370
1371static int usbhsh_irq_setup_err(struct usbhs_priv *priv,
1372 struct usbhs_irq_state *irq_state)
1373{
1374 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1375 struct device *dev = usbhs_priv_to_dev(priv);
1376
1377 dev_dbg(dev, "setup packet Err\n");
1378
1379 complete(&hpriv->setup_ack_done); /* see usbhsh_urb_enqueue() */
1380
1381 return 0;
1382}
1383
1384/*
1385 * module start/stop
1386 */
1387static void usbhsh_pipe_init_for_host(struct usbhs_priv *priv)
1388{
1389 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1390 struct usbhs_pipe *pipe;
1391 u32 *pipe_type = usbhs_get_dparam(priv, pipe_type);
1392 int pipe_size = usbhs_get_dparam(priv, pipe_size);
1393 int old_type, dir_in, i;
1394
1395 /* init all pipe */
1396 old_type = USB_ENDPOINT_XFER_CONTROL;
1397 for (i = 0; i < pipe_size; i++) {
1398
1399 /*
1400 * data "output" will be finished as soon as possible,
1401 * but there is no guaranty at data "input" case.
1402 *
1403 * "input" needs "standby" pipe.
1404 * So, "input" direction pipe > "output" direction pipe
1405 * is good idea.
1406 *
1407 * 1st USB_ENDPOINT_XFER_xxx will be output direction,
1408 * and the other will be input direction here.
1409 *
1410 * ex)
1411 * ...
1412 * USB_ENDPOINT_XFER_ISOC -> dir out
1413 * USB_ENDPOINT_XFER_ISOC -> dir in
1414 * USB_ENDPOINT_XFER_BULK -> dir out
1415 * USB_ENDPOINT_XFER_BULK -> dir in
1416 * USB_ENDPOINT_XFER_BULK -> dir in
1417 * ...
1418 */
1419 dir_in = (pipe_type[i] == old_type);
1420 old_type = pipe_type[i];
1421
1422 if (USB_ENDPOINT_XFER_CONTROL == pipe_type[i]) {
1423 pipe = usbhs_dcp_malloc(priv);
1424 usbhsh_hpriv_to_dcp(hpriv) = pipe;
1425 } else {
1426 pipe = usbhs_pipe_malloc(priv,
1427 pipe_type[i],
1428 dir_in);
1429 }
1430
1431 pipe->mod_private = NULL;
1432 }
1433}
1434
1435static int usbhsh_start(struct usbhs_priv *priv)
1436{
1437 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1438 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
1439 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
1440 struct device *dev = usbhs_priv_to_dev(priv);
1441 int ret;
1442
1443 /* add hcd */
1444 ret = usb_add_hcd(hcd, 0, 0);
1445 if (ret < 0)
1446 return 0;
1447
1448 /*
1449 * pipe initialize and enable DCP
1450 */
1451 usbhs_pipe_init(priv,
1452 usbhsh_dma_map_ctrl);
1453 usbhs_fifo_init(priv);
1454 usbhsh_pipe_init_for_host(priv);
1455
1456 /*
1457 * system config enble
1458 * - HI speed
1459 * - host
1460 * - usb module
1461 */
1462 usbhs_sys_host_ctrl(priv, 1);
1463
1464 /*
1465 * enable irq callback
1466 */
1467 mod->irq_attch = usbhsh_irq_attch;
1468 mod->irq_dtch = usbhsh_irq_dtch;
1469 mod->irq_sack = usbhsh_irq_setup_ack;
1470 mod->irq_sign = usbhsh_irq_setup_err;
1471 usbhs_irq_callback_update(priv, mod);
1472
1473 dev_dbg(dev, "start host\n");
1474
1475 return ret;
1476}
1477
1478static int usbhsh_stop(struct usbhs_priv *priv)
1479{
1480 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1481 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
1482 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
1483 struct device *dev = usbhs_priv_to_dev(priv);
1484
1485 /*
1486 * disable irq callback
1487 */
1488 mod->irq_attch = NULL;
1489 mod->irq_dtch = NULL;
1490 mod->irq_sack = NULL;
1491 mod->irq_sign = NULL;
1492 usbhs_irq_callback_update(priv, mod);
1493
1494 usb_remove_hcd(hcd);
1495
1496 /* disable sys */
1497 usbhs_sys_host_ctrl(priv, 0);
1498
1499 dev_dbg(dev, "quit host\n");
1500
1501 return 0;
1502}
1503
1504int usbhs_mod_host_probe(struct usbhs_priv *priv)
1505{
1506 struct usbhsh_hpriv *hpriv;
1507 struct usb_hcd *hcd;
1508 struct usbhsh_device *udev;
1509 struct device *dev = usbhs_priv_to_dev(priv);
1510 int i;
1511
1512 /* initialize hcd */
1513 hcd = usb_create_hcd(&usbhsh_driver, dev, usbhsh_hcd_name);
1514 if (!hcd) {
1515 dev_err(dev, "Failed to create hcd\n");
1516 return -ENOMEM;
1517 }
1518 hcd->has_tt = 1; /* for low/full speed */
1519
1520 /*
1521 * CAUTION
1522 *
1523 * There is no guarantee that it is possible to access usb module here.
1524 * Don't accesses to it.
1525 * The accesse will be enable after "usbhsh_start"
1526 */
1527
1528 hpriv = usbhsh_hcd_to_hpriv(hcd);
1529
1530 /*
1531 * register itself
1532 */
1533 usbhs_mod_register(priv, &hpriv->mod, USBHS_HOST);
1534
1535 /* init hpriv */
1536 hpriv->mod.name = "host";
1537 hpriv->mod.start = usbhsh_start;
1538 hpriv->mod.stop = usbhsh_stop;
1539 usbhsh_port_stat_init(hpriv);
1540
1541 /* init all device */
1542 usbhsh_for_each_udev_with_dev0(udev, hpriv, i) {
1543 udev->usbv = NULL;
1544 INIT_LIST_HEAD(&udev->ep_list_head);
1545 }
1546
1547 dev_info(dev, "host probed\n");
1548
1549 return 0;
1550}
1551
1552int usbhs_mod_host_remove(struct usbhs_priv *priv)
1553{
1554 struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
1555 struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
1556
1557 usb_put_hcd(hcd);
1558
1559 return 0;
1560}