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034d7c13 KM |
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 | |
e5679d07 | 48 | * +--------+ | | other device requested |
034d7c13 KM |
49 | * +- [uep 1 (bulk)] --|---+ +--------------+ |
50 | * | +--------------> | pipe0 (dcp) | | |
e5679d07 KM |
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)] -@ | | .... | | |
034d7c13 KM |
62 | * | | |
63 | * +- [uep 2 (bulk)]-----------+ | |
e5679d07 KM |
64 | * |
65 | * @ : uep requested free pipe, but all have been used. | |
66 | * now it is waiting for free pipe | |
034d7c13 KM |
67 | */ |
68 | ||
69 | ||
70 | /* | |
71 | * struct | |
72 | */ | |
034d7c13 KM |
73 | struct usbhsh_request { |
74 | struct urb *urb; | |
75 | struct usbhs_pkt pkt; | |
034d7c13 KM |
76 | }; |
77 | ||
78 | struct usbhsh_device { | |
79 | struct usb_device *usbv; | |
80 | struct list_head ep_list_head; /* list of usbhsh_ep */ | |
81 | }; | |
82 | ||
83 | struct usbhsh_ep { | |
e5679d07 | 84 | struct usbhs_pipe *pipe; /* attached pipe */ |
034d7c13 | 85 | struct usbhsh_device *udev; /* attached udev */ |
e4c57ded | 86 | struct usb_host_endpoint *ep; |
034d7c13 | 87 | struct list_head ep_list; /* list to usbhsh_device */ |
034d7c13 KM |
88 | }; |
89 | ||
90 | #define USBHSH_DEVICE_MAX 10 /* see DEVADDn / DCPMAXP / PIPEMAXP */ | |
91 | #define USBHSH_PORT_MAX 7 /* see DEVADDn :: HUBPORT */ | |
92 | struct usbhsh_hpriv { | |
93 | struct usbhs_mod mod; | |
94 | struct usbhs_pipe *dcp; | |
95 | ||
96 | struct usbhsh_device udev[USBHSH_DEVICE_MAX]; | |
97 | ||
034d7c13 KM |
98 | u32 port_stat; /* USB_PORT_STAT_xxx */ |
99 | ||
7fccd480 | 100 | struct completion setup_ack_done; |
034d7c13 KM |
101 | }; |
102 | ||
103 | ||
104 | static 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 | ||
034d7c13 KM |
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) | |
e4c57ded KM |
134 | #define usbhsh_uep_to_ep(u) ((u)->ep) |
135 | ||
034d7c13 KM |
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) | |
ab142308 | 142 | #define usbhsh_udev_is_used(h) usbhsh_udev_to_usbv(h) |
034d7c13 | 143 | |
e5679d07 | 144 | #define usbhsh_pipe_to_uep(p) ((p)->mod_private) |
034d7c13 | 145 | |
9c673652 KM |
146 | #define usbhsh_device_parent(d) (usbhsh_usbv_to_udev((d)->usbv->parent)) |
147 | #define usbhsh_device_hubport(d) ((d)->usbv->portnum) | |
034d7c13 KM |
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 | ||
25234b46 | 157 | #define usbhsh_pkt_to_ureq(p) \ |
034d7c13 KM |
158 | container_of((void *)p, struct usbhsh_request, pkt) |
159 | ||
160 | /* | |
161 | * req alloc/free | |
162 | */ | |
25234b46 | 163 | static struct usbhsh_request *usbhsh_ureq_alloc(struct usbhsh_hpriv *hpriv, |
034d7c13 KM |
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 | ||
c5b963f8 | 171 | ureq = kzalloc(sizeof(struct usbhsh_request), mem_flags); |
034d7c13 KM |
172 | if (!ureq) { |
173 | dev_err(dev, "ureq alloc fail\n"); | |
174 | return NULL; | |
175 | } | |
176 | ||
177 | usbhs_pkt_init(&ureq->pkt); | |
034d7c13 | 178 | ureq->urb = urb; |
fc9d5c79 | 179 | usbhsh_urb_to_ureq(urb) = ureq; |
034d7c13 KM |
180 | |
181 | return ureq; | |
182 | } | |
183 | ||
25234b46 | 184 | static void usbhsh_ureq_free(struct usbhsh_hpriv *hpriv, |
034d7c13 KM |
185 | struct usbhsh_request *ureq) |
186 | { | |
fc9d5c79 | 187 | usbhsh_urb_to_ureq(ureq->urb) = NULL; |
034d7c13 | 188 | ureq->urb = NULL; |
c5b963f8 KM |
189 | |
190 | kfree(ureq); | |
034d7c13 KM |
191 | } |
192 | ||
b1930da0 KM |
193 | /* |
194 | * status | |
195 | */ | |
196 | static 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 | ||
e4c57ded | 208 | /* |
e5679d07 | 209 | * pipe control |
e4c57ded | 210 | */ |
3edeee38 KM |
211 | static 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 | ||
e4c57ded KM |
253 | static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv, |
254 | struct urb *urb); | |
e5679d07 KM |
255 | |
256 | static int usbhsh_pipe_attach(struct usbhsh_hpriv *hpriv, | |
257 | struct urb *urb) | |
e4c57ded KM |
258 | { |
259 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
e5679d07 | 260 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep); |
e4c57ded | 261 | struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb); |
e5679d07 KM |
262 | struct usbhs_pipe *pipe; |
263 | struct usb_endpoint_descriptor *desc = &urb->ep->desc; | |
e4c57ded | 264 | struct device *dev = usbhs_priv_to_dev(priv); |
e4c57ded | 265 | unsigned long flags; |
e5679d07 KM |
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; | |
e4c57ded KM |
270 | |
271 | /******************** spin lock ********************/ | |
272 | usbhs_lock(priv, flags); | |
273 | ||
e5679d07 KM |
274 | if (unlikely(usbhsh_uep_to_pipe(uep))) { |
275 | dev_err(dev, "uep already has pipe\n"); | |
276 | goto usbhsh_pipe_attach_done; | |
277 | } | |
e4c57ded | 278 | |
e5679d07 KM |
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; | |
e4c57ded | 284 | |
e5679d07 KM |
285 | /* check pipe direction if normal pipe */ |
286 | if (!is_dcp) { | |
e4c57ded KM |
287 | dir_in = !!usbhs_pipe_is_dir_in(pipe); |
288 | if (0 != (dir_in - dir_in_req)) | |
289 | continue; | |
e5679d07 | 290 | } |
e4c57ded | 291 | |
e5679d07 KM |
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 | ||
e5679d07 KM |
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; | |
e4c57ded KM |
320 | } |
321 | ||
e5679d07 KM |
322 | usbhsh_pipe_attach_done: |
323 | usbhs_unlock(priv, flags); | |
324 | /******************** spin unlock ******************/ | |
e4c57ded | 325 | |
e5679d07 KM |
326 | return ret; |
327 | } | |
328 | ||
329 | static 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)); | |
e4c57ded KM |
356 | } |
357 | ||
358 | usbhs_unlock(priv, flags); | |
359 | /******************** spin unlock ******************/ | |
e5679d07 | 360 | } |
e4c57ded | 361 | |
e5679d07 KM |
362 | /* |
363 | * endpoint control | |
364 | */ | |
365 | static 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; | |
e4c57ded KM |
381 | } |
382 | ||
e5679d07 KM |
383 | /******************** spin lock ********************/ |
384 | usbhs_lock(priv, flags); | |
385 | ||
e4c57ded | 386 | /* |
e5679d07 | 387 | * init endpoint |
e4c57ded | 388 | */ |
e5679d07 KM |
389 | INIT_LIST_HEAD(&uep->ep_list); |
390 | list_add_tail(&uep->ep_list, &udev->ep_list_head); | |
391 | ||
e4c57ded KM |
392 | usbhsh_uep_to_udev(uep) = udev; |
393 | usbhsh_uep_to_ep(uep) = ep; | |
394 | usbhsh_ep_to_uep(ep) = uep; | |
395 | ||
e5679d07 KM |
396 | usbhs_unlock(priv, flags); |
397 | /******************** spin unlock ******************/ | |
e4c57ded | 398 | |
e5679d07 | 399 | dev_dbg(dev, "%s [%d-%d]\n", __func__, |
e4c57ded | 400 | usbhsh_device_number(hpriv, udev), |
e5679d07 | 401 | usb_endpoint_num(desc)); |
e4c57ded KM |
402 | |
403 | return 0; | |
404 | } | |
405 | ||
406 | static 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); | |
e4c57ded KM |
412 | unsigned long flags; |
413 | ||
414 | if (!uep) | |
415 | return; | |
416 | ||
e5679d07 | 417 | dev_dbg(dev, "%s [%d-%d]\n", __func__, |
e4c57ded | 418 | usbhsh_device_number(hpriv, usbhsh_uep_to_udev(uep)), |
e5679d07 KM |
419 | usb_endpoint_num(&ep->desc)); |
420 | ||
421 | if (usbhsh_uep_to_pipe(uep)) | |
422 | usbhsh_pipe_detach(hpriv, uep); | |
e4c57ded KM |
423 | |
424 | /******************** spin lock ********************/ | |
425 | usbhs_lock(priv, flags); | |
426 | ||
e4c57ded KM |
427 | /* remove this endpoint from udev */ |
428 | list_del_init(&uep->ep_list); | |
429 | ||
e4c57ded KM |
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 | ||
440 | static 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 | ||
034d7c13 KM |
449 | /* |
450 | * device control | |
451 | */ | |
9c673652 KM |
452 | static 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 | } | |
034d7c13 KM |
459 | |
460 | static int usbhsh_device_has_endpoint(struct usbhsh_device *udev) | |
461 | { | |
462 | return !list_empty(&udev->ep_list_head); | |
463 | } | |
464 | ||
c1e4877a KM |
465 | static 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 | ||
7aac8d15 | 483 | static struct usbhsh_device *usbhsh_device_attach(struct usbhsh_hpriv *hpriv, |
034d7c13 KM |
484 | struct urb *urb) |
485 | { | |
486 | struct usbhsh_device *udev = NULL; | |
c1e4877a KM |
487 | struct usbhsh_device *udev0 = usbhsh_device0(hpriv); |
488 | struct usbhsh_device *pos; | |
034d7c13 KM |
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); | |
d399f90d | 493 | unsigned long flags; |
9c673652 | 494 | u16 upphub, hubport; |
034d7c13 KM |
495 | int i; |
496 | ||
c1e4877a KM |
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 | ||
d399f90d KM |
509 | /******************** spin lock ********************/ |
510 | usbhs_lock(priv, flags); | |
511 | ||
034d7c13 | 512 | /* |
c1e4877a | 513 | * find unused device |
034d7c13 | 514 | */ |
c1e4877a KM |
515 | usbhsh_for_each_udev(pos, hpriv, i) { |
516 | if (usbhsh_udev_is_used(pos)) | |
517 | continue; | |
518 | udev = pos; | |
519 | break; | |
034d7c13 KM |
520 | } |
521 | ||
d399f90d KM |
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 | ||
ab142308 KM |
535 | if (!udev) { |
536 | dev_err(dev, "no free usbhsh_device\n"); | |
537 | return NULL; | |
034d7c13 KM |
538 | } |
539 | ||
e4c57ded | 540 | if (usbhsh_device_has_endpoint(udev)) { |
034d7c13 | 541 | dev_warn(dev, "udev have old endpoint\n"); |
e4c57ded KM |
542 | usbhsh_endpoint_detach_all(hpriv, udev); |
543 | } | |
034d7c13 | 544 | |
e4c57ded | 545 | if (usbhsh_device_has_endpoint(udev0)) { |
c1e4877a | 546 | dev_warn(dev, "udev0 have old endpoint\n"); |
e4c57ded KM |
547 | usbhsh_endpoint_detach_all(hpriv, udev0); |
548 | } | |
c1e4877a | 549 | |
034d7c13 | 550 | /* uep will be attached */ |
c1e4877a | 551 | INIT_LIST_HEAD(&udev0->ep_list_head); |
034d7c13 KM |
552 | INIT_LIST_HEAD(&udev->ep_list_head); |
553 | ||
c1e4877a KM |
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 | */ | |
9c673652 KM |
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 | ||
3dd49268 | 576 | usbhs_set_device_config(priv, |
034d7c13 | 577 | usbhsh_device_number(hpriv, udev), |
9c673652 | 578 | upphub, hubport, usbv->speed); |
034d7c13 KM |
579 | |
580 | dev_dbg(dev, "%s [%d](%p)\n", __func__, | |
581 | usbhsh_device_number(hpriv, udev), udev); | |
582 | ||
583 | return udev; | |
584 | } | |
585 | ||
7aac8d15 | 586 | static void usbhsh_device_detach(struct usbhsh_hpriv *hpriv, |
034d7c13 KM |
587 | struct usbhsh_device *udev) |
588 | { | |
589 | struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv); | |
d399f90d | 590 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); |
034d7c13 KM |
591 | struct device *dev = usbhsh_hcd_to_dev(hcd); |
592 | struct usb_device *usbv = usbhsh_udev_to_usbv(udev); | |
d399f90d | 593 | unsigned long flags; |
034d7c13 KM |
594 | |
595 | dev_dbg(dev, "%s [%d](%p)\n", __func__, | |
596 | usbhsh_device_number(hpriv, udev), udev); | |
597 | ||
e4c57ded | 598 | if (usbhsh_device_has_endpoint(udev)) { |
034d7c13 | 599 | dev_warn(dev, "udev still have endpoint\n"); |
e4c57ded KM |
600 | usbhsh_endpoint_detach_all(hpriv, udev); |
601 | } | |
034d7c13 | 602 | |
c1e4877a KM |
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 | ||
d399f90d KM |
612 | /******************** spin lock ********************/ |
613 | usbhs_lock(priv, flags); | |
614 | ||
034d7c13 KM |
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; | |
d399f90d KM |
622 | |
623 | usbhs_unlock(priv, flags); | |
624 | /******************** spin unlock ******************/ | |
034d7c13 KM |
625 | } |
626 | ||
034d7c13 KM |
627 | /* |
628 | * queue push/pop | |
629 | */ | |
630 | static void usbhsh_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt) | |
631 | { | |
25234b46 | 632 | struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt); |
034d7c13 KM |
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; | |
e5679d07 | 636 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep); |
034d7c13 | 637 | struct device *dev = usbhs_priv_to_dev(priv); |
6d0376f8 | 638 | int status = 0; |
034d7c13 KM |
639 | |
640 | dev_dbg(dev, "%s\n", __func__); | |
641 | ||
642 | if (!urb) { | |
643 | dev_warn(dev, "pkt doesn't have urb\n"); | |
644 | return; | |
645 | } | |
646 | ||
6d0376f8 KM |
647 | if (!usbhsh_is_running(hpriv)) |
648 | status = -ESHUTDOWN; | |
649 | ||
034d7c13 | 650 | urb->actual_length = pkt->actual; |
25234b46 | 651 | usbhsh_ureq_free(hpriv, ureq); |
034d7c13 | 652 | |
3edeee38 KM |
653 | usbhsh_endpoint_sequence_save(hpriv, urb, pkt); |
654 | usbhsh_pipe_detach(hpriv, uep); | |
655 | ||
034d7c13 | 656 | usb_hcd_unlink_urb_from_ep(hcd, urb); |
6d0376f8 | 657 | usb_hcd_giveback_urb(hcd, urb, status); |
034d7c13 KM |
658 | } |
659 | ||
660 | static int usbhsh_queue_push(struct usb_hcd *hcd, | |
ee8a0bf5 KM |
661 | struct urb *urb, |
662 | gfp_t mem_flags) | |
034d7c13 | 663 | { |
ee8a0bf5 | 664 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); |
3eddc9e4 KM |
665 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep); |
666 | struct usbhs_pipe *pipe = usbhsh_uep_to_pipe(uep); | |
034d7c13 | 667 | struct device *dev = usbhsh_hcd_to_dev(hcd); |
ee8a0bf5 | 668 | struct usbhsh_request *ureq; |
034d7c13 | 669 | void *buf; |
3edeee38 | 670 | int len, sequence; |
034d7c13 KM |
671 | |
672 | if (usb_pipeisoc(urb->pipe)) { | |
673 | dev_err(dev, "pipe iso is not supported now\n"); | |
674 | return -EIO; | |
675 | } | |
676 | ||
ee8a0bf5 KM |
677 | /* this ureq will be freed on usbhsh_queue_done() */ |
678 | ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags); | |
679 | if (unlikely(!ureq)) { | |
680 | dev_err(dev, "ureq alloc fail\n"); | |
681 | return -ENOMEM; | |
682 | } | |
ee8a0bf5 | 683 | |
034d7c13 KM |
684 | if (usb_pipein(urb->pipe)) |
685 | pipe->handler = &usbhs_fifo_pio_pop_handler; | |
686 | else | |
687 | pipe->handler = &usbhs_fifo_pio_push_handler; | |
688 | ||
689 | buf = (void *)(urb->transfer_buffer + urb->actual_length); | |
690 | len = urb->transfer_buffer_length - urb->actual_length; | |
691 | ||
3edeee38 KM |
692 | sequence = usb_gettoggle(urb->dev, |
693 | usb_pipeendpoint(urb->pipe), | |
694 | usb_pipeout(urb->pipe)); | |
695 | ||
034d7c13 | 696 | dev_dbg(dev, "%s\n", __func__); |
ee8a0bf5 | 697 | usbhs_pkt_push(pipe, &ureq->pkt, usbhsh_queue_done, |
3edeee38 KM |
698 | buf, len, (urb->transfer_flags & URB_ZERO_PACKET), |
699 | sequence); | |
700 | ||
034d7c13 KM |
701 | usbhs_pkt_start(pipe); |
702 | ||
703 | return 0; | |
704 | } | |
705 | ||
706 | /* | |
707 | * DCP setup stage | |
708 | */ | |
709 | static int usbhsh_is_request_address(struct urb *urb) | |
710 | { | |
25234b46 | 711 | struct usb_ctrlrequest *req; |
034d7c13 | 712 | |
25234b46 | 713 | req = (struct usb_ctrlrequest *)urb->setup_packet; |
034d7c13 | 714 | |
25234b46 KM |
715 | if ((DeviceOutRequest == req->bRequestType << 8) && |
716 | (USB_REQ_SET_ADDRESS == req->bRequest)) | |
034d7c13 KM |
717 | return 1; |
718 | else | |
719 | return 0; | |
720 | } | |
721 | ||
722 | static void usbhsh_setup_stage_packet_push(struct usbhsh_hpriv *hpriv, | |
723 | struct urb *urb, | |
724 | struct usbhs_pipe *pipe) | |
725 | { | |
726 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
727 | struct usb_ctrlrequest req; | |
728 | struct device *dev = usbhs_priv_to_dev(priv); | |
729 | ||
730 | /* | |
731 | * wait setup packet ACK | |
732 | * see | |
733 | * usbhsh_irq_setup_ack() | |
734 | * usbhsh_irq_setup_err() | |
735 | */ | |
7fccd480 | 736 | init_completion(&hpriv->setup_ack_done); |
034d7c13 KM |
737 | |
738 | /* copy original request */ | |
739 | memcpy(&req, urb->setup_packet, sizeof(struct usb_ctrlrequest)); | |
740 | ||
741 | /* | |
742 | * renesas_usbhs can not use original usb address. | |
743 | * see HARDWARE LIMITATION. | |
c1e4877a KM |
744 | * modify usb address here to use attached device. |
745 | * see usbhsh_device_attach() | |
034d7c13 KM |
746 | */ |
747 | if (usbhsh_is_request_address(urb)) { | |
c1e4877a KM |
748 | struct usb_device *usbv = usbhsh_urb_to_usbv(urb); |
749 | struct usbhsh_device *udev = usbhsh_usbv_to_udev(usbv); | |
750 | ||
751 | /* udev is a attached device */ | |
752 | req.wValue = usbhsh_device_number(hpriv, udev); | |
034d7c13 KM |
753 | dev_dbg(dev, "create new address - %d\n", req.wValue); |
754 | } | |
755 | ||
756 | /* set request */ | |
757 | usbhs_usbreq_set_val(priv, &req); | |
758 | ||
759 | /* | |
760 | * wait setup packet ACK | |
761 | */ | |
7fccd480 | 762 | wait_for_completion(&hpriv->setup_ack_done); |
034d7c13 KM |
763 | |
764 | dev_dbg(dev, "%s done\n", __func__); | |
765 | } | |
766 | ||
767 | /* | |
768 | * DCP data stage | |
769 | */ | |
770 | static void usbhsh_data_stage_packet_done(struct usbhs_priv *priv, | |
771 | struct usbhs_pkt *pkt) | |
772 | { | |
25234b46 | 773 | struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt); |
034d7c13 | 774 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); |
034d7c13 KM |
775 | |
776 | /* this ureq was connected to urb when usbhsh_urb_enqueue() */ | |
777 | ||
25234b46 | 778 | usbhsh_ureq_free(hpriv, ureq); |
034d7c13 KM |
779 | } |
780 | ||
ee8a0bf5 KM |
781 | static int usbhsh_data_stage_packet_push(struct usbhsh_hpriv *hpriv, |
782 | struct urb *urb, | |
783 | struct usbhs_pipe *pipe, | |
784 | gfp_t mem_flags) | |
785 | ||
034d7c13 KM |
786 | { |
787 | struct usbhsh_request *ureq; | |
034d7c13 | 788 | |
ee8a0bf5 KM |
789 | /* this ureq will be freed on usbhsh_data_stage_packet_done() */ |
790 | ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags); | |
791 | if (unlikely(!ureq)) | |
792 | return -ENOMEM; | |
034d7c13 KM |
793 | |
794 | if (usb_pipein(urb->pipe)) | |
795 | pipe->handler = &usbhs_dcp_data_stage_in_handler; | |
796 | else | |
797 | pipe->handler = &usbhs_dcp_data_stage_out_handler; | |
798 | ||
ee8a0bf5 | 799 | usbhs_pkt_push(pipe, &ureq->pkt, |
034d7c13 KM |
800 | usbhsh_data_stage_packet_done, |
801 | urb->transfer_buffer, | |
802 | urb->transfer_buffer_length, | |
3edeee38 KM |
803 | (urb->transfer_flags & URB_ZERO_PACKET), |
804 | -1); | |
ee8a0bf5 KM |
805 | |
806 | return 0; | |
034d7c13 KM |
807 | } |
808 | ||
809 | /* | |
810 | * DCP status stage | |
811 | */ | |
ee8a0bf5 | 812 | static int usbhsh_status_stage_packet_push(struct usbhsh_hpriv *hpriv, |
034d7c13 | 813 | struct urb *urb, |
ee8a0bf5 KM |
814 | struct usbhs_pipe *pipe, |
815 | gfp_t mem_flags) | |
034d7c13 KM |
816 | { |
817 | struct usbhsh_request *ureq; | |
034d7c13 | 818 | |
ee8a0bf5 KM |
819 | /* This ureq will be freed on usbhsh_queue_done() */ |
820 | ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags); | |
821 | if (unlikely(!ureq)) | |
822 | return -ENOMEM; | |
034d7c13 KM |
823 | |
824 | if (usb_pipein(urb->pipe)) | |
825 | pipe->handler = &usbhs_dcp_status_stage_in_handler; | |
826 | else | |
827 | pipe->handler = &usbhs_dcp_status_stage_out_handler; | |
828 | ||
ee8a0bf5 | 829 | usbhs_pkt_push(pipe, &ureq->pkt, |
034d7c13 KM |
830 | usbhsh_queue_done, |
831 | NULL, | |
832 | urb->transfer_buffer_length, | |
3edeee38 | 833 | 0, -1); |
ee8a0bf5 KM |
834 | |
835 | return 0; | |
034d7c13 KM |
836 | } |
837 | ||
838 | static int usbhsh_dcp_queue_push(struct usb_hcd *hcd, | |
ee8a0bf5 KM |
839 | struct urb *urb, |
840 | gfp_t mflags) | |
034d7c13 | 841 | { |
ee8a0bf5 | 842 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); |
3eddc9e4 KM |
843 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep); |
844 | struct usbhs_pipe *pipe = usbhsh_uep_to_pipe(uep); | |
034d7c13 | 845 | struct device *dev = usbhsh_hcd_to_dev(hcd); |
ee8a0bf5 | 846 | int ret; |
034d7c13 KM |
847 | |
848 | dev_dbg(dev, "%s\n", __func__); | |
849 | ||
850 | /* | |
851 | * setup stage | |
852 | * | |
853 | * usbhsh_send_setup_stage_packet() wait SACK/SIGN | |
854 | */ | |
855 | usbhsh_setup_stage_packet_push(hpriv, urb, pipe); | |
856 | ||
857 | /* | |
858 | * data stage | |
859 | * | |
860 | * It is pushed only when urb has buffer. | |
861 | */ | |
ee8a0bf5 KM |
862 | if (urb->transfer_buffer_length) { |
863 | ret = usbhsh_data_stage_packet_push(hpriv, urb, pipe, mflags); | |
864 | if (ret < 0) { | |
865 | dev_err(dev, "data stage failed\n"); | |
866 | return ret; | |
867 | } | |
868 | } | |
034d7c13 KM |
869 | |
870 | /* | |
871 | * status stage | |
872 | */ | |
ee8a0bf5 KM |
873 | ret = usbhsh_status_stage_packet_push(hpriv, urb, pipe, mflags); |
874 | if (ret < 0) { | |
875 | dev_err(dev, "status stage failed\n"); | |
876 | return ret; | |
877 | } | |
034d7c13 KM |
878 | |
879 | /* | |
880 | * start pushed packets | |
881 | */ | |
882 | usbhs_pkt_start(pipe); | |
883 | ||
884 | return 0; | |
885 | } | |
886 | ||
887 | /* | |
888 | * dma map functions | |
889 | */ | |
890 | static int usbhsh_dma_map_ctrl(struct usbhs_pkt *pkt, int map) | |
891 | { | |
892 | return 0; | |
893 | } | |
894 | ||
895 | /* | |
896 | * for hc_driver | |
897 | */ | |
898 | static int usbhsh_host_start(struct usb_hcd *hcd) | |
899 | { | |
900 | return 0; | |
901 | } | |
902 | ||
903 | static void usbhsh_host_stop(struct usb_hcd *hcd) | |
904 | { | |
905 | } | |
906 | ||
907 | static int usbhsh_urb_enqueue(struct usb_hcd *hcd, | |
908 | struct urb *urb, | |
909 | gfp_t mem_flags) | |
910 | { | |
911 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); | |
912 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
913 | struct device *dev = usbhs_priv_to_dev(priv); | |
034d7c13 | 914 | struct usb_host_endpoint *ep = urb->ep; |
7aac8d15 | 915 | struct usbhsh_device *new_udev = NULL; |
73ef635a | 916 | int is_dir_in = usb_pipein(urb->pipe); |
e5679d07 | 917 | int i; |
034d7c13 KM |
918 | int ret; |
919 | ||
73ef635a | 920 | dev_dbg(dev, "%s (%s)\n", __func__, is_dir_in ? "in" : "out"); |
034d7c13 | 921 | |
b1930da0 KM |
922 | if (!usbhsh_is_running(hpriv)) { |
923 | ret = -EIO; | |
924 | goto usbhsh_urb_enqueue_error_not_linked; | |
925 | } | |
926 | ||
034d7c13 KM |
927 | ret = usb_hcd_link_urb_to_ep(hcd, urb); |
928 | if (ret) | |
929 | goto usbhsh_urb_enqueue_error_not_linked; | |
930 | ||
931 | /* | |
7aac8d15 | 932 | * attach udev if needed |
e5679d07 | 933 | * see [image of mod_host] |
034d7c13 | 934 | */ |
c1e4877a | 935 | if (!usbhsh_device_get(hpriv, urb)) { |
7aac8d15 | 936 | new_udev = usbhsh_device_attach(hpriv, urb); |
37332ee0 KM |
937 | if (!new_udev) { |
938 | ret = -EIO; | |
034d7c13 | 939 | goto usbhsh_urb_enqueue_error_not_linked; |
37332ee0 | 940 | } |
034d7c13 KM |
941 | } |
942 | ||
943 | /* | |
4825093e | 944 | * attach endpoint if needed |
e5679d07 | 945 | * see [image of mod_host] |
034d7c13 | 946 | */ |
4825093e KM |
947 | if (!usbhsh_ep_to_uep(ep)) { |
948 | ret = usbhsh_endpoint_attach(hpriv, urb, mem_flags); | |
949 | if (ret < 0) | |
034d7c13 KM |
950 | goto usbhsh_urb_enqueue_error_free_device; |
951 | } | |
034d7c13 | 952 | |
e5679d07 KM |
953 | /* |
954 | * attach pipe to endpoint | |
955 | * see [image of mod_host] | |
956 | */ | |
957 | for (i = 0; i < 1024; i++) { | |
958 | ret = usbhsh_pipe_attach(hpriv, urb); | |
959 | if (ret < 0) | |
960 | msleep(100); | |
961 | else | |
962 | break; | |
963 | } | |
964 | if (ret < 0) | |
965 | goto usbhsh_urb_enqueue_error_free_endpoint; | |
966 | ||
034d7c13 KM |
967 | /* |
968 | * push packet | |
969 | */ | |
970 | if (usb_pipecontrol(urb->pipe)) | |
3eddc9e4 | 971 | ret = usbhsh_dcp_queue_push(hcd, urb, mem_flags); |
034d7c13 | 972 | else |
3eddc9e4 | 973 | ret = usbhsh_queue_push(hcd, urb, mem_flags); |
034d7c13 | 974 | |
ee8a0bf5 | 975 | return ret; |
034d7c13 | 976 | |
e5679d07 KM |
977 | usbhsh_urb_enqueue_error_free_endpoint: |
978 | usbhsh_endpoint_detach(hpriv, ep); | |
034d7c13 KM |
979 | usbhsh_urb_enqueue_error_free_device: |
980 | if (new_udev) | |
7aac8d15 | 981 | usbhsh_device_detach(hpriv, new_udev); |
034d7c13 KM |
982 | usbhsh_urb_enqueue_error_not_linked: |
983 | ||
984 | dev_dbg(dev, "%s error\n", __func__); | |
985 | ||
986 | return ret; | |
987 | } | |
988 | ||
989 | static int usbhsh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) | |
990 | { | |
991 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); | |
992 | struct usbhsh_request *ureq = usbhsh_urb_to_ureq(urb); | |
993 | ||
54796543 KM |
994 | if (ureq) { |
995 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
996 | struct usbhs_pkt *pkt = &ureq->pkt; | |
997 | ||
998 | usbhs_pkt_pop(pkt->pipe, pkt); | |
999 | usbhsh_queue_done(priv, pkt); | |
1000 | } | |
034d7c13 KM |
1001 | |
1002 | return 0; | |
1003 | } | |
1004 | ||
1005 | static void usbhsh_endpoint_disable(struct usb_hcd *hcd, | |
1006 | struct usb_host_endpoint *ep) | |
1007 | { | |
1008 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep); | |
1009 | struct usbhsh_device *udev; | |
1010 | struct usbhsh_hpriv *hpriv; | |
1011 | ||
1012 | /* | |
1013 | * this function might be called manytimes by same hcd/ep | |
fca8ab7e | 1014 | * in-endpoint == out-endpoint if ep == dcp. |
034d7c13 KM |
1015 | */ |
1016 | if (!uep) | |
1017 | return; | |
1018 | ||
1019 | udev = usbhsh_uep_to_udev(uep); | |
1020 | hpriv = usbhsh_hcd_to_hpriv(hcd); | |
1021 | ||
4825093e | 1022 | usbhsh_endpoint_detach(hpriv, ep); |
034d7c13 KM |
1023 | |
1024 | /* | |
1025 | * if there is no endpoint, | |
1026 | * free device | |
1027 | */ | |
1028 | if (!usbhsh_device_has_endpoint(udev)) | |
7aac8d15 | 1029 | usbhsh_device_detach(hpriv, udev); |
034d7c13 KM |
1030 | } |
1031 | ||
1032 | static int usbhsh_hub_status_data(struct usb_hcd *hcd, char *buf) | |
1033 | { | |
1034 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); | |
1035 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
1036 | struct device *dev = usbhs_priv_to_dev(priv); | |
1037 | int roothub_id = 1; /* only 1 root hub */ | |
1038 | ||
1039 | /* | |
1040 | * does port stat was changed ? | |
1041 | * check USB_PORT_STAT_C_xxx << 16 | |
1042 | */ | |
1043 | if (usbhsh_port_stat_get(hpriv) & 0xFFFF0000) | |
1044 | *buf = (1 << roothub_id); | |
1045 | else | |
1046 | *buf = 0; | |
1047 | ||
1048 | dev_dbg(dev, "%s (%02x)\n", __func__, *buf); | |
1049 | ||
1050 | return !!(*buf); | |
1051 | } | |
1052 | ||
1053 | static int __usbhsh_hub_hub_feature(struct usbhsh_hpriv *hpriv, | |
1054 | u16 typeReq, u16 wValue, | |
1055 | u16 wIndex, char *buf, u16 wLength) | |
1056 | { | |
1057 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
1058 | struct device *dev = usbhs_priv_to_dev(priv); | |
1059 | ||
1060 | switch (wValue) { | |
1061 | case C_HUB_OVER_CURRENT: | |
1062 | case C_HUB_LOCAL_POWER: | |
1063 | dev_dbg(dev, "%s :: C_HUB_xx\n", __func__); | |
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | return -EPIPE; | |
1068 | } | |
1069 | ||
1070 | static int __usbhsh_hub_port_feature(struct usbhsh_hpriv *hpriv, | |
1071 | u16 typeReq, u16 wValue, | |
1072 | u16 wIndex, char *buf, u16 wLength) | |
1073 | { | |
1074 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
1075 | struct device *dev = usbhs_priv_to_dev(priv); | |
1076 | int enable = (typeReq == SetPortFeature); | |
1077 | int speed, i, timeout = 128; | |
1078 | int roothub_id = 1; /* only 1 root hub */ | |
1079 | ||
1080 | /* common error */ | |
1081 | if (wIndex > roothub_id || wLength != 0) | |
1082 | return -EPIPE; | |
1083 | ||
1084 | /* check wValue */ | |
1085 | switch (wValue) { | |
1086 | case USB_PORT_FEAT_POWER: | |
1087 | usbhs_vbus_ctrl(priv, enable); | |
1088 | dev_dbg(dev, "%s :: USB_PORT_FEAT_POWER\n", __func__); | |
1089 | break; | |
1090 | ||
1091 | case USB_PORT_FEAT_ENABLE: | |
1092 | case USB_PORT_FEAT_SUSPEND: | |
1093 | case USB_PORT_FEAT_C_ENABLE: | |
1094 | case USB_PORT_FEAT_C_SUSPEND: | |
1095 | case USB_PORT_FEAT_C_CONNECTION: | |
1096 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
1097 | case USB_PORT_FEAT_C_RESET: | |
1098 | dev_dbg(dev, "%s :: USB_PORT_FEAT_xxx\n", __func__); | |
1099 | break; | |
1100 | ||
1101 | case USB_PORT_FEAT_RESET: | |
1102 | if (!enable) | |
1103 | break; | |
1104 | ||
1105 | usbhsh_port_stat_clear(hpriv, | |
1106 | USB_PORT_STAT_HIGH_SPEED | | |
1107 | USB_PORT_STAT_LOW_SPEED); | |
1108 | ||
1109 | usbhs_bus_send_reset(priv); | |
1110 | msleep(20); | |
1111 | usbhs_bus_send_sof_enable(priv); | |
1112 | ||
1113 | for (i = 0; i < timeout ; i++) { | |
1114 | switch (usbhs_bus_get_speed(priv)) { | |
1115 | case USB_SPEED_LOW: | |
1116 | speed = USB_PORT_STAT_LOW_SPEED; | |
1117 | goto got_usb_bus_speed; | |
1118 | case USB_SPEED_HIGH: | |
1119 | speed = USB_PORT_STAT_HIGH_SPEED; | |
1120 | goto got_usb_bus_speed; | |
1121 | case USB_SPEED_FULL: | |
1122 | speed = 0; | |
1123 | goto got_usb_bus_speed; | |
1124 | } | |
1125 | ||
1126 | msleep(20); | |
1127 | } | |
1128 | return -EPIPE; | |
1129 | ||
1130 | got_usb_bus_speed: | |
1131 | usbhsh_port_stat_set(hpriv, speed); | |
1132 | usbhsh_port_stat_set(hpriv, USB_PORT_STAT_ENABLE); | |
1133 | ||
1134 | dev_dbg(dev, "%s :: USB_PORT_FEAT_RESET (speed = %d)\n", | |
1135 | __func__, speed); | |
1136 | ||
1137 | /* status change is not needed */ | |
1138 | return 0; | |
1139 | ||
1140 | default: | |
1141 | return -EPIPE; | |
1142 | } | |
1143 | ||
1144 | /* set/clear status */ | |
1145 | if (enable) | |
1146 | usbhsh_port_stat_set(hpriv, (1 << wValue)); | |
1147 | else | |
1148 | usbhsh_port_stat_clear(hpriv, (1 << wValue)); | |
1149 | ||
1150 | return 0; | |
1151 | } | |
1152 | ||
1153 | static int __usbhsh_hub_get_status(struct usbhsh_hpriv *hpriv, | |
1154 | u16 typeReq, u16 wValue, | |
1155 | u16 wIndex, char *buf, u16 wLength) | |
1156 | { | |
1157 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
1158 | struct usb_hub_descriptor *desc = (struct usb_hub_descriptor *)buf; | |
1159 | struct device *dev = usbhs_priv_to_dev(priv); | |
1160 | int roothub_id = 1; /* only 1 root hub */ | |
1161 | ||
1162 | switch (typeReq) { | |
1163 | case GetHubStatus: | |
1164 | dev_dbg(dev, "%s :: GetHubStatus\n", __func__); | |
1165 | ||
1166 | *buf = 0x00; | |
1167 | break; | |
1168 | ||
1169 | case GetPortStatus: | |
1170 | if (wIndex != roothub_id) | |
1171 | return -EPIPE; | |
1172 | ||
1173 | dev_dbg(dev, "%s :: GetPortStatus\n", __func__); | |
1174 | *(__le32 *)buf = cpu_to_le32(usbhsh_port_stat_get(hpriv)); | |
1175 | break; | |
1176 | ||
1177 | case GetHubDescriptor: | |
1178 | desc->bDescriptorType = 0x29; | |
1179 | desc->bHubContrCurrent = 0; | |
1180 | desc->bNbrPorts = roothub_id; | |
1181 | desc->bDescLength = 9; | |
1182 | desc->bPwrOn2PwrGood = 0; | |
1183 | desc->wHubCharacteristics = cpu_to_le16(0x0011); | |
1184 | desc->u.hs.DeviceRemovable[0] = (roothub_id << 1); | |
1185 | desc->u.hs.DeviceRemovable[1] = ~0; | |
1186 | dev_dbg(dev, "%s :: GetHubDescriptor\n", __func__); | |
1187 | break; | |
1188 | } | |
1189 | ||
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | static int usbhsh_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, | |
1194 | u16 wIndex, char *buf, u16 wLength) | |
1195 | { | |
1196 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); | |
1197 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
1198 | struct device *dev = usbhs_priv_to_dev(priv); | |
1199 | int ret = -EPIPE; | |
1200 | ||
1201 | switch (typeReq) { | |
1202 | ||
1203 | /* Hub Feature */ | |
1204 | case ClearHubFeature: | |
1205 | case SetHubFeature: | |
1206 | ret = __usbhsh_hub_hub_feature(hpriv, typeReq, | |
1207 | wValue, wIndex, buf, wLength); | |
1208 | break; | |
1209 | ||
1210 | /* Port Feature */ | |
1211 | case SetPortFeature: | |
1212 | case ClearPortFeature: | |
1213 | ret = __usbhsh_hub_port_feature(hpriv, typeReq, | |
1214 | wValue, wIndex, buf, wLength); | |
1215 | break; | |
1216 | ||
1217 | /* Get status */ | |
1218 | case GetHubStatus: | |
1219 | case GetPortStatus: | |
1220 | case GetHubDescriptor: | |
1221 | ret = __usbhsh_hub_get_status(hpriv, typeReq, | |
1222 | wValue, wIndex, buf, wLength); | |
1223 | break; | |
1224 | } | |
1225 | ||
1226 | dev_dbg(dev, "typeReq = %x, ret = %d, port_stat = %x\n", | |
1227 | typeReq, ret, usbhsh_port_stat_get(hpriv)); | |
1228 | ||
1229 | return ret; | |
1230 | } | |
1231 | ||
1232 | static struct hc_driver usbhsh_driver = { | |
1233 | .description = usbhsh_hcd_name, | |
1234 | .hcd_priv_size = sizeof(struct usbhsh_hpriv), | |
1235 | ||
1236 | /* | |
1237 | * generic hardware linkage | |
1238 | */ | |
1239 | .flags = HCD_USB2, | |
1240 | ||
1241 | .start = usbhsh_host_start, | |
1242 | .stop = usbhsh_host_stop, | |
1243 | ||
1244 | /* | |
1245 | * managing i/o requests and associated device resources | |
1246 | */ | |
1247 | .urb_enqueue = usbhsh_urb_enqueue, | |
1248 | .urb_dequeue = usbhsh_urb_dequeue, | |
1249 | .endpoint_disable = usbhsh_endpoint_disable, | |
1250 | ||
1251 | /* | |
1252 | * root hub | |
1253 | */ | |
1254 | .hub_status_data = usbhsh_hub_status_data, | |
1255 | .hub_control = usbhsh_hub_control, | |
1256 | }; | |
1257 | ||
1258 | /* | |
1259 | * interrupt functions | |
1260 | */ | |
1261 | static int usbhsh_irq_attch(struct usbhs_priv *priv, | |
1262 | struct usbhs_irq_state *irq_state) | |
1263 | { | |
1264 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1265 | struct device *dev = usbhs_priv_to_dev(priv); | |
1266 | ||
1267 | dev_dbg(dev, "device attached\n"); | |
1268 | ||
1269 | usbhsh_port_stat_set(hpriv, USB_PORT_STAT_CONNECTION); | |
1270 | usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16); | |
1271 | ||
31e00fd1 KM |
1272 | /* |
1273 | * attch interrupt might happen infinitely on some device | |
1274 | * (on self power USB hub ?) | |
1275 | * disable it here. | |
b1930da0 KM |
1276 | * |
1277 | * usbhsh_is_running() becomes effective | |
1278 | * according to this process. | |
1279 | * see | |
1280 | * usbhsh_is_running() | |
1281 | * usbhsh_urb_enqueue() | |
31e00fd1 KM |
1282 | */ |
1283 | hpriv->mod.irq_attch = NULL; | |
1284 | usbhs_irq_callback_update(priv, &hpriv->mod); | |
1285 | ||
034d7c13 KM |
1286 | return 0; |
1287 | } | |
1288 | ||
1289 | static int usbhsh_irq_dtch(struct usbhs_priv *priv, | |
1290 | struct usbhs_irq_state *irq_state) | |
1291 | { | |
1292 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1293 | struct device *dev = usbhs_priv_to_dev(priv); | |
1294 | ||
1295 | dev_dbg(dev, "device detached\n"); | |
1296 | ||
1297 | usbhsh_port_stat_clear(hpriv, USB_PORT_STAT_CONNECTION); | |
1298 | usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16); | |
1299 | ||
31e00fd1 KM |
1300 | /* |
1301 | * enable attch interrupt again | |
b1930da0 KM |
1302 | * |
1303 | * usbhsh_is_running() becomes invalid | |
1304 | * according to this process. | |
1305 | * see | |
1306 | * usbhsh_is_running() | |
1307 | * usbhsh_urb_enqueue() | |
31e00fd1 KM |
1308 | */ |
1309 | hpriv->mod.irq_attch = usbhsh_irq_attch; | |
1310 | usbhs_irq_callback_update(priv, &hpriv->mod); | |
1311 | ||
034d7c13 KM |
1312 | return 0; |
1313 | } | |
1314 | ||
1315 | static int usbhsh_irq_setup_ack(struct usbhs_priv *priv, | |
1316 | struct usbhs_irq_state *irq_state) | |
1317 | { | |
1318 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1319 | struct device *dev = usbhs_priv_to_dev(priv); | |
1320 | ||
1321 | dev_dbg(dev, "setup packet OK\n"); | |
1322 | ||
7fccd480 | 1323 | complete(&hpriv->setup_ack_done); /* see usbhsh_urb_enqueue() */ |
034d7c13 KM |
1324 | |
1325 | return 0; | |
1326 | } | |
1327 | ||
1328 | static int usbhsh_irq_setup_err(struct usbhs_priv *priv, | |
1329 | struct usbhs_irq_state *irq_state) | |
1330 | { | |
1331 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1332 | struct device *dev = usbhs_priv_to_dev(priv); | |
1333 | ||
1334 | dev_dbg(dev, "setup packet Err\n"); | |
1335 | ||
7fccd480 | 1336 | complete(&hpriv->setup_ack_done); /* see usbhsh_urb_enqueue() */ |
034d7c13 KM |
1337 | |
1338 | return 0; | |
1339 | } | |
1340 | ||
1341 | /* | |
1342 | * module start/stop | |
1343 | */ | |
1344 | static void usbhsh_pipe_init_for_host(struct usbhs_priv *priv) | |
1345 | { | |
1346 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
034d7c13 KM |
1347 | struct usbhs_pipe *pipe; |
1348 | u32 *pipe_type = usbhs_get_dparam(priv, pipe_type); | |
1349 | int pipe_size = usbhs_get_dparam(priv, pipe_size); | |
1350 | int old_type, dir_in, i; | |
1351 | ||
1352 | /* init all pipe */ | |
1353 | old_type = USB_ENDPOINT_XFER_CONTROL; | |
1354 | for (i = 0; i < pipe_size; i++) { | |
034d7c13 KM |
1355 | |
1356 | /* | |
1357 | * data "output" will be finished as soon as possible, | |
1358 | * but there is no guaranty at data "input" case. | |
1359 | * | |
1360 | * "input" needs "standby" pipe. | |
1361 | * So, "input" direction pipe > "output" direction pipe | |
1362 | * is good idea. | |
1363 | * | |
1364 | * 1st USB_ENDPOINT_XFER_xxx will be output direction, | |
1365 | * and the other will be input direction here. | |
1366 | * | |
1367 | * ex) | |
1368 | * ... | |
1369 | * USB_ENDPOINT_XFER_ISOC -> dir out | |
1370 | * USB_ENDPOINT_XFER_ISOC -> dir in | |
1371 | * USB_ENDPOINT_XFER_BULK -> dir out | |
1372 | * USB_ENDPOINT_XFER_BULK -> dir in | |
1373 | * USB_ENDPOINT_XFER_BULK -> dir in | |
1374 | * ... | |
1375 | */ | |
1376 | dir_in = (pipe_type[i] == old_type); | |
1377 | old_type = pipe_type[i]; | |
1378 | ||
1379 | if (USB_ENDPOINT_XFER_CONTROL == pipe_type[i]) { | |
1380 | pipe = usbhs_dcp_malloc(priv); | |
1381 | usbhsh_hpriv_to_dcp(hpriv) = pipe; | |
1382 | } else { | |
1383 | pipe = usbhs_pipe_malloc(priv, | |
1384 | pipe_type[i], | |
1385 | dir_in); | |
1386 | } | |
1387 | ||
e5679d07 | 1388 | pipe->mod_private = NULL; |
034d7c13 KM |
1389 | } |
1390 | } | |
1391 | ||
1392 | static int usbhsh_start(struct usbhs_priv *priv) | |
1393 | { | |
1394 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1395 | struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv); | |
1396 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
1397 | struct device *dev = usbhs_priv_to_dev(priv); | |
1398 | int ret; | |
1399 | ||
1400 | /* add hcd */ | |
1401 | ret = usb_add_hcd(hcd, 0, 0); | |
1402 | if (ret < 0) | |
1403 | return 0; | |
1404 | ||
1405 | /* | |
1406 | * pipe initialize and enable DCP | |
1407 | */ | |
1408 | usbhs_pipe_init(priv, | |
1409 | usbhsh_dma_map_ctrl); | |
1410 | usbhs_fifo_init(priv); | |
1411 | usbhsh_pipe_init_for_host(priv); | |
1412 | ||
1413 | /* | |
1414 | * system config enble | |
1415 | * - HI speed | |
1416 | * - host | |
1417 | * - usb module | |
1418 | */ | |
034d7c13 | 1419 | usbhs_sys_host_ctrl(priv, 1); |
034d7c13 KM |
1420 | |
1421 | /* | |
1422 | * enable irq callback | |
1423 | */ | |
1424 | mod->irq_attch = usbhsh_irq_attch; | |
1425 | mod->irq_dtch = usbhsh_irq_dtch; | |
1426 | mod->irq_sack = usbhsh_irq_setup_ack; | |
1427 | mod->irq_sign = usbhsh_irq_setup_err; | |
1428 | usbhs_irq_callback_update(priv, mod); | |
1429 | ||
1430 | dev_dbg(dev, "start host\n"); | |
1431 | ||
1432 | return ret; | |
1433 | } | |
1434 | ||
1435 | static int usbhsh_stop(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); | |
146ee50a | 1439 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); |
034d7c13 KM |
1440 | struct device *dev = usbhs_priv_to_dev(priv); |
1441 | ||
146ee50a KM |
1442 | /* |
1443 | * disable irq callback | |
1444 | */ | |
1445 | mod->irq_attch = NULL; | |
1446 | mod->irq_dtch = NULL; | |
1447 | mod->irq_sack = NULL; | |
1448 | mod->irq_sign = NULL; | |
1449 | usbhs_irq_callback_update(priv, mod); | |
1450 | ||
034d7c13 KM |
1451 | usb_remove_hcd(hcd); |
1452 | ||
1453 | /* disable sys */ | |
034d7c13 | 1454 | usbhs_sys_host_ctrl(priv, 0); |
034d7c13 KM |
1455 | |
1456 | dev_dbg(dev, "quit host\n"); | |
1457 | ||
1458 | return 0; | |
1459 | } | |
1460 | ||
b7a8d17d | 1461 | int usbhs_mod_host_probe(struct usbhs_priv *priv) |
034d7c13 KM |
1462 | { |
1463 | struct usbhsh_hpriv *hpriv; | |
1464 | struct usb_hcd *hcd; | |
034d7c13 KM |
1465 | struct usbhsh_device *udev; |
1466 | struct device *dev = usbhs_priv_to_dev(priv); | |
034d7c13 KM |
1467 | int i; |
1468 | ||
1469 | /* initialize hcd */ | |
1470 | hcd = usb_create_hcd(&usbhsh_driver, dev, usbhsh_hcd_name); | |
1471 | if (!hcd) { | |
1472 | dev_err(dev, "Failed to create hcd\n"); | |
1473 | return -ENOMEM; | |
1474 | } | |
1475 | ||
034d7c13 KM |
1476 | /* |
1477 | * CAUTION | |
1478 | * | |
1479 | * There is no guarantee that it is possible to access usb module here. | |
1480 | * Don't accesses to it. | |
1481 | * The accesse will be enable after "usbhsh_start" | |
1482 | */ | |
1483 | ||
1484 | hpriv = usbhsh_hcd_to_hpriv(hcd); | |
1485 | ||
1486 | /* | |
1487 | * register itself | |
1488 | */ | |
1489 | usbhs_mod_register(priv, &hpriv->mod, USBHS_HOST); | |
1490 | ||
1491 | /* init hpriv */ | |
1492 | hpriv->mod.name = "host"; | |
1493 | hpriv->mod.start = usbhsh_start; | |
1494 | hpriv->mod.stop = usbhsh_stop; | |
034d7c13 KM |
1495 | usbhsh_port_stat_init(hpriv); |
1496 | ||
1497 | /* init all device */ | |
1498 | usbhsh_for_each_udev_with_dev0(udev, hpriv, i) { | |
1499 | udev->usbv = NULL; | |
1500 | INIT_LIST_HEAD(&udev->ep_list_head); | |
1501 | } | |
1502 | ||
1503 | dev_info(dev, "host probed\n"); | |
1504 | ||
1505 | return 0; | |
034d7c13 KM |
1506 | } |
1507 | ||
b7a8d17d | 1508 | int usbhs_mod_host_remove(struct usbhs_priv *priv) |
034d7c13 KM |
1509 | { |
1510 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1511 | struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv); | |
1512 | ||
034d7c13 KM |
1513 | usb_put_hcd(hcd); |
1514 | ||
1515 | return 0; | |
1516 | } |