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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 | ||
e4c57ded | 193 | /* |
e5679d07 | 194 | * pipe control |
e4c57ded | 195 | */ |
3edeee38 KM |
196 | static void usbhsh_endpoint_sequence_save(struct usbhsh_hpriv *hpriv, |
197 | struct urb *urb, | |
198 | struct usbhs_pkt *pkt) | |
199 | { | |
200 | int len = urb->actual_length; | |
201 | int maxp = usb_endpoint_maxp(&urb->ep->desc); | |
202 | int t = 0; | |
203 | ||
204 | /* DCP is out of sequence control */ | |
205 | if (usb_pipecontrol(urb->pipe)) | |
206 | return; | |
207 | ||
208 | /* | |
209 | * renesas_usbhs pipe has a limitation in a number. | |
210 | * So, driver should re-use the limited pipe for each device/endpoint. | |
211 | * DATA0/1 sequence should be saved for it. | |
212 | * see [image of mod_host] | |
213 | * [HARDWARE LIMITATION] | |
214 | */ | |
215 | ||
216 | /* | |
217 | * next sequence depends on actual_length | |
218 | * | |
219 | * ex) actual_length = 1147, maxp = 512 | |
220 | * data0 : 512 | |
221 | * data1 : 512 | |
222 | * data0 : 123 | |
223 | * data1 is the next sequence | |
224 | */ | |
225 | t = len / maxp; | |
226 | if (len % maxp) | |
227 | t++; | |
228 | if (pkt->zero) | |
229 | t++; | |
230 | t %= 2; | |
231 | ||
232 | if (t) | |
233 | usb_dotoggle(urb->dev, | |
234 | usb_pipeendpoint(urb->pipe), | |
235 | usb_pipeout(urb->pipe)); | |
236 | } | |
237 | ||
e4c57ded KM |
238 | static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv, |
239 | struct urb *urb); | |
e5679d07 KM |
240 | |
241 | static int usbhsh_pipe_attach(struct usbhsh_hpriv *hpriv, | |
242 | struct urb *urb) | |
e4c57ded KM |
243 | { |
244 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
e5679d07 | 245 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep); |
e4c57ded | 246 | struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb); |
e5679d07 KM |
247 | struct usbhs_pipe *pipe; |
248 | struct usb_endpoint_descriptor *desc = &urb->ep->desc; | |
e4c57ded | 249 | struct device *dev = usbhs_priv_to_dev(priv); |
e4c57ded | 250 | unsigned long flags; |
e5679d07 KM |
251 | int dir_in_req = !!usb_pipein(urb->pipe); |
252 | int is_dcp = usb_endpoint_xfer_control(desc); | |
253 | int i, dir_in; | |
254 | int ret = -EBUSY; | |
e4c57ded KM |
255 | |
256 | /******************** spin lock ********************/ | |
257 | usbhs_lock(priv, flags); | |
258 | ||
e5679d07 KM |
259 | if (unlikely(usbhsh_uep_to_pipe(uep))) { |
260 | dev_err(dev, "uep already has pipe\n"); | |
261 | goto usbhsh_pipe_attach_done; | |
262 | } | |
e4c57ded | 263 | |
e5679d07 KM |
264 | usbhs_for_each_pipe_with_dcp(pipe, priv, i) { |
265 | ||
266 | /* check pipe type */ | |
267 | if (!usbhs_pipe_type_is(pipe, usb_endpoint_type(desc))) | |
268 | continue; | |
e4c57ded | 269 | |
e5679d07 KM |
270 | /* check pipe direction if normal pipe */ |
271 | if (!is_dcp) { | |
e4c57ded KM |
272 | dir_in = !!usbhs_pipe_is_dir_in(pipe); |
273 | if (0 != (dir_in - dir_in_req)) | |
274 | continue; | |
e5679d07 | 275 | } |
e4c57ded | 276 | |
e5679d07 KM |
277 | /* check pipe is free */ |
278 | if (usbhsh_pipe_to_uep(pipe)) | |
279 | continue; | |
280 | ||
281 | /* | |
282 | * attach pipe to uep | |
283 | * | |
284 | * usbhs_pipe_config_update() should be called after | |
285 | * usbhs_set_device_config() | |
286 | * see | |
287 | * DCPMAXP/PIPEMAXP | |
288 | */ | |
289 | usbhsh_uep_to_pipe(uep) = pipe; | |
290 | usbhsh_pipe_to_uep(pipe) = uep; | |
291 | ||
e5679d07 KM |
292 | usbhs_pipe_config_update(pipe, |
293 | usbhsh_device_number(hpriv, udev), | |
294 | usb_endpoint_num(desc), | |
295 | usb_endpoint_maxp(desc)); | |
296 | ||
297 | dev_dbg(dev, "%s [%d-%d(%s:%s)]\n", __func__, | |
298 | usbhsh_device_number(hpriv, udev), | |
299 | usb_endpoint_num(desc), | |
300 | usbhs_pipe_name(pipe), | |
301 | dir_in_req ? "in" : "out"); | |
302 | ||
303 | ret = 0; | |
304 | break; | |
e4c57ded KM |
305 | } |
306 | ||
e5679d07 KM |
307 | usbhsh_pipe_attach_done: |
308 | usbhs_unlock(priv, flags); | |
309 | /******************** spin unlock ******************/ | |
e4c57ded | 310 | |
e5679d07 KM |
311 | return ret; |
312 | } | |
313 | ||
314 | static void usbhsh_pipe_detach(struct usbhsh_hpriv *hpriv, | |
315 | struct usbhsh_ep *uep) | |
316 | { | |
317 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
318 | struct usbhs_pipe *pipe; | |
319 | struct device *dev = usbhs_priv_to_dev(priv); | |
320 | unsigned long flags; | |
321 | ||
322 | /******************** spin lock ********************/ | |
323 | usbhs_lock(priv, flags); | |
324 | ||
325 | pipe = usbhsh_uep_to_pipe(uep); | |
326 | ||
327 | if (unlikely(!pipe)) { | |
328 | dev_err(dev, "uep doens't have pipe\n"); | |
329 | } else { | |
330 | struct usb_host_endpoint *ep = usbhsh_uep_to_ep(uep); | |
331 | struct usbhsh_device *udev = usbhsh_uep_to_udev(uep); | |
332 | ||
333 | /* detach pipe from uep */ | |
334 | usbhsh_uep_to_pipe(uep) = NULL; | |
335 | usbhsh_pipe_to_uep(pipe) = NULL; | |
336 | ||
337 | dev_dbg(dev, "%s [%d-%d(%s)]\n", __func__, | |
338 | usbhsh_device_number(hpriv, udev), | |
339 | usb_endpoint_num(&ep->desc), | |
340 | usbhs_pipe_name(pipe)); | |
e4c57ded KM |
341 | } |
342 | ||
343 | usbhs_unlock(priv, flags); | |
344 | /******************** spin unlock ******************/ | |
e5679d07 | 345 | } |
e4c57ded | 346 | |
e5679d07 KM |
347 | /* |
348 | * endpoint control | |
349 | */ | |
350 | static int usbhsh_endpoint_attach(struct usbhsh_hpriv *hpriv, | |
351 | struct urb *urb, | |
352 | gfp_t mem_flags) | |
353 | { | |
354 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
355 | struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb); | |
356 | struct usb_host_endpoint *ep = urb->ep; | |
357 | struct usbhsh_ep *uep; | |
358 | struct device *dev = usbhs_priv_to_dev(priv); | |
359 | struct usb_endpoint_descriptor *desc = &ep->desc; | |
360 | unsigned long flags; | |
361 | ||
362 | uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags); | |
363 | if (!uep) { | |
364 | dev_err(dev, "usbhsh_ep alloc fail\n"); | |
365 | return -ENOMEM; | |
e4c57ded KM |
366 | } |
367 | ||
e5679d07 KM |
368 | /******************** spin lock ********************/ |
369 | usbhs_lock(priv, flags); | |
370 | ||
e4c57ded | 371 | /* |
e5679d07 | 372 | * init endpoint |
e4c57ded | 373 | */ |
e5679d07 KM |
374 | INIT_LIST_HEAD(&uep->ep_list); |
375 | list_add_tail(&uep->ep_list, &udev->ep_list_head); | |
376 | ||
e4c57ded KM |
377 | usbhsh_uep_to_udev(uep) = udev; |
378 | usbhsh_uep_to_ep(uep) = ep; | |
379 | usbhsh_ep_to_uep(ep) = uep; | |
380 | ||
e5679d07 KM |
381 | usbhs_unlock(priv, flags); |
382 | /******************** spin unlock ******************/ | |
e4c57ded | 383 | |
e5679d07 | 384 | dev_dbg(dev, "%s [%d-%d]\n", __func__, |
e4c57ded | 385 | usbhsh_device_number(hpriv, udev), |
e5679d07 | 386 | usb_endpoint_num(desc)); |
e4c57ded KM |
387 | |
388 | return 0; | |
389 | } | |
390 | ||
391 | static void usbhsh_endpoint_detach(struct usbhsh_hpriv *hpriv, | |
392 | struct usb_host_endpoint *ep) | |
393 | { | |
394 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
395 | struct device *dev = usbhs_priv_to_dev(priv); | |
396 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep); | |
e4c57ded KM |
397 | unsigned long flags; |
398 | ||
399 | if (!uep) | |
400 | return; | |
401 | ||
e5679d07 | 402 | dev_dbg(dev, "%s [%d-%d]\n", __func__, |
e4c57ded | 403 | usbhsh_device_number(hpriv, usbhsh_uep_to_udev(uep)), |
e5679d07 KM |
404 | usb_endpoint_num(&ep->desc)); |
405 | ||
406 | if (usbhsh_uep_to_pipe(uep)) | |
407 | usbhsh_pipe_detach(hpriv, uep); | |
e4c57ded KM |
408 | |
409 | /******************** spin lock ********************/ | |
410 | usbhs_lock(priv, flags); | |
411 | ||
e4c57ded KM |
412 | /* remove this endpoint from udev */ |
413 | list_del_init(&uep->ep_list); | |
414 | ||
e4c57ded KM |
415 | usbhsh_uep_to_udev(uep) = NULL; |
416 | usbhsh_uep_to_ep(uep) = NULL; | |
417 | usbhsh_ep_to_uep(ep) = NULL; | |
418 | ||
419 | usbhs_unlock(priv, flags); | |
420 | /******************** spin unlock ******************/ | |
421 | ||
422 | kfree(uep); | |
423 | } | |
424 | ||
425 | static void usbhsh_endpoint_detach_all(struct usbhsh_hpriv *hpriv, | |
426 | struct usbhsh_device *udev) | |
427 | { | |
428 | struct usbhsh_ep *uep, *next; | |
429 | ||
430 | list_for_each_entry_safe(uep, next, &udev->ep_list_head, ep_list) | |
431 | usbhsh_endpoint_detach(hpriv, usbhsh_uep_to_ep(uep)); | |
432 | } | |
433 | ||
034d7c13 KM |
434 | /* |
435 | * device control | |
436 | */ | |
9c673652 KM |
437 | static int usbhsh_connected_to_rhdev(struct usb_hcd *hcd, |
438 | struct usbhsh_device *udev) | |
439 | { | |
440 | struct usb_device *usbv = usbhsh_udev_to_usbv(udev); | |
441 | ||
442 | return hcd->self.root_hub == usbv->parent; | |
443 | } | |
034d7c13 KM |
444 | |
445 | static int usbhsh_device_has_endpoint(struct usbhsh_device *udev) | |
446 | { | |
447 | return !list_empty(&udev->ep_list_head); | |
448 | } | |
449 | ||
c1e4877a KM |
450 | static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv, |
451 | struct urb *urb) | |
452 | { | |
453 | struct usb_device *usbv = usbhsh_urb_to_usbv(urb); | |
454 | struct usbhsh_device *udev = usbhsh_usbv_to_udev(usbv); | |
455 | ||
456 | /* usbhsh_device_attach() is still not called */ | |
457 | if (!udev) | |
458 | return NULL; | |
459 | ||
460 | /* if it is device0, return it */ | |
461 | if (0 == usb_pipedevice(urb->pipe)) | |
462 | return usbhsh_device0(hpriv); | |
463 | ||
464 | /* return attached device */ | |
465 | return udev; | |
466 | } | |
467 | ||
7aac8d15 | 468 | static struct usbhsh_device *usbhsh_device_attach(struct usbhsh_hpriv *hpriv, |
034d7c13 KM |
469 | struct urb *urb) |
470 | { | |
471 | struct usbhsh_device *udev = NULL; | |
c1e4877a KM |
472 | struct usbhsh_device *udev0 = usbhsh_device0(hpriv); |
473 | struct usbhsh_device *pos; | |
034d7c13 KM |
474 | struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv); |
475 | struct device *dev = usbhsh_hcd_to_dev(hcd); | |
476 | struct usb_device *usbv = usbhsh_urb_to_usbv(urb); | |
477 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
d399f90d | 478 | unsigned long flags; |
9c673652 | 479 | u16 upphub, hubport; |
034d7c13 KM |
480 | int i; |
481 | ||
c1e4877a KM |
482 | /* |
483 | * This function should be called only while urb is pointing to device0. | |
484 | * It will attach unused usbhsh_device to urb (usbv), | |
485 | * and initialize device0. | |
486 | * You can use usbhsh_device_get() to get "current" udev, | |
487 | * and usbhsh_usbv_to_udev() is for "attached" udev. | |
488 | */ | |
489 | if (0 != usb_pipedevice(urb->pipe)) { | |
490 | dev_err(dev, "%s fail: urb isn't pointing device0\n", __func__); | |
491 | return NULL; | |
492 | } | |
493 | ||
d399f90d KM |
494 | /******************** spin lock ********************/ |
495 | usbhs_lock(priv, flags); | |
496 | ||
034d7c13 | 497 | /* |
c1e4877a | 498 | * find unused device |
034d7c13 | 499 | */ |
c1e4877a KM |
500 | usbhsh_for_each_udev(pos, hpriv, i) { |
501 | if (usbhsh_udev_is_used(pos)) | |
502 | continue; | |
503 | udev = pos; | |
504 | break; | |
034d7c13 KM |
505 | } |
506 | ||
d399f90d KM |
507 | if (udev) { |
508 | /* | |
509 | * usbhsh_usbv_to_udev() | |
510 | * usbhsh_udev_to_usbv() | |
511 | * will be enable | |
512 | */ | |
513 | dev_set_drvdata(&usbv->dev, udev); | |
514 | udev->usbv = usbv; | |
515 | } | |
516 | ||
517 | usbhs_unlock(priv, flags); | |
518 | /******************** spin unlock ******************/ | |
519 | ||
ab142308 KM |
520 | if (!udev) { |
521 | dev_err(dev, "no free usbhsh_device\n"); | |
522 | return NULL; | |
034d7c13 KM |
523 | } |
524 | ||
e4c57ded | 525 | if (usbhsh_device_has_endpoint(udev)) { |
034d7c13 | 526 | dev_warn(dev, "udev have old endpoint\n"); |
e4c57ded KM |
527 | usbhsh_endpoint_detach_all(hpriv, udev); |
528 | } | |
034d7c13 | 529 | |
e4c57ded | 530 | if (usbhsh_device_has_endpoint(udev0)) { |
c1e4877a | 531 | dev_warn(dev, "udev0 have old endpoint\n"); |
e4c57ded KM |
532 | usbhsh_endpoint_detach_all(hpriv, udev0); |
533 | } | |
c1e4877a | 534 | |
034d7c13 | 535 | /* uep will be attached */ |
c1e4877a | 536 | INIT_LIST_HEAD(&udev0->ep_list_head); |
034d7c13 KM |
537 | INIT_LIST_HEAD(&udev->ep_list_head); |
538 | ||
c1e4877a KM |
539 | /* |
540 | * set device0 config | |
541 | */ | |
542 | usbhs_set_device_config(priv, | |
543 | 0, 0, 0, usbv->speed); | |
544 | ||
545 | /* | |
546 | * set new device config | |
547 | */ | |
9c673652 KM |
548 | upphub = 0; |
549 | hubport = 0; | |
550 | if (!usbhsh_connected_to_rhdev(hcd, udev)) { | |
551 | /* if udev is not connected to rhdev, it means parent is Hub */ | |
552 | struct usbhsh_device *parent = usbhsh_device_parent(udev); | |
553 | ||
554 | upphub = usbhsh_device_number(hpriv, parent); | |
555 | hubport = usbhsh_device_hubport(udev); | |
556 | ||
557 | dev_dbg(dev, "%s connecte to Hub [%d:%d](%p)\n", __func__, | |
558 | upphub, hubport, parent); | |
559 | } | |
560 | ||
3dd49268 | 561 | usbhs_set_device_config(priv, |
034d7c13 | 562 | usbhsh_device_number(hpriv, udev), |
9c673652 | 563 | upphub, hubport, usbv->speed); |
034d7c13 KM |
564 | |
565 | dev_dbg(dev, "%s [%d](%p)\n", __func__, | |
566 | usbhsh_device_number(hpriv, udev), udev); | |
567 | ||
568 | return udev; | |
569 | } | |
570 | ||
7aac8d15 | 571 | static void usbhsh_device_detach(struct usbhsh_hpriv *hpriv, |
034d7c13 KM |
572 | struct usbhsh_device *udev) |
573 | { | |
574 | struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv); | |
d399f90d | 575 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); |
034d7c13 KM |
576 | struct device *dev = usbhsh_hcd_to_dev(hcd); |
577 | struct usb_device *usbv = usbhsh_udev_to_usbv(udev); | |
d399f90d | 578 | unsigned long flags; |
034d7c13 KM |
579 | |
580 | dev_dbg(dev, "%s [%d](%p)\n", __func__, | |
581 | usbhsh_device_number(hpriv, udev), udev); | |
582 | ||
e4c57ded | 583 | if (usbhsh_device_has_endpoint(udev)) { |
034d7c13 | 584 | dev_warn(dev, "udev still have endpoint\n"); |
e4c57ded KM |
585 | usbhsh_endpoint_detach_all(hpriv, udev); |
586 | } | |
034d7c13 | 587 | |
c1e4877a KM |
588 | /* |
589 | * There is nothing to do if it is device0. | |
590 | * see | |
591 | * usbhsh_device_attach() | |
592 | * usbhsh_device_get() | |
593 | */ | |
594 | if (0 == usbhsh_device_number(hpriv, udev)) | |
595 | return; | |
596 | ||
d399f90d KM |
597 | /******************** spin lock ********************/ |
598 | usbhs_lock(priv, flags); | |
599 | ||
034d7c13 KM |
600 | /* |
601 | * usbhsh_usbv_to_udev() | |
602 | * usbhsh_udev_to_usbv() | |
603 | * will be disable | |
604 | */ | |
605 | dev_set_drvdata(&usbv->dev, NULL); | |
606 | udev->usbv = NULL; | |
d399f90d KM |
607 | |
608 | usbhs_unlock(priv, flags); | |
609 | /******************** spin unlock ******************/ | |
034d7c13 KM |
610 | } |
611 | ||
034d7c13 KM |
612 | /* |
613 | * queue push/pop | |
614 | */ | |
615 | static void usbhsh_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt) | |
616 | { | |
25234b46 | 617 | struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt); |
034d7c13 KM |
618 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); |
619 | struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv); | |
620 | struct urb *urb = ureq->urb; | |
e5679d07 | 621 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep); |
034d7c13 KM |
622 | struct device *dev = usbhs_priv_to_dev(priv); |
623 | ||
624 | dev_dbg(dev, "%s\n", __func__); | |
625 | ||
626 | if (!urb) { | |
627 | dev_warn(dev, "pkt doesn't have urb\n"); | |
628 | return; | |
629 | } | |
630 | ||
631 | urb->actual_length = pkt->actual; | |
25234b46 | 632 | usbhsh_ureq_free(hpriv, ureq); |
034d7c13 | 633 | |
3edeee38 KM |
634 | usbhsh_endpoint_sequence_save(hpriv, urb, pkt); |
635 | usbhsh_pipe_detach(hpriv, uep); | |
636 | ||
034d7c13 KM |
637 | usb_hcd_unlink_urb_from_ep(hcd, urb); |
638 | usb_hcd_giveback_urb(hcd, urb, 0); | |
639 | } | |
640 | ||
641 | static int usbhsh_queue_push(struct usb_hcd *hcd, | |
ee8a0bf5 KM |
642 | struct urb *urb, |
643 | gfp_t mem_flags) | |
034d7c13 | 644 | { |
ee8a0bf5 | 645 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); |
3eddc9e4 KM |
646 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep); |
647 | struct usbhs_pipe *pipe = usbhsh_uep_to_pipe(uep); | |
034d7c13 | 648 | struct device *dev = usbhsh_hcd_to_dev(hcd); |
ee8a0bf5 | 649 | struct usbhsh_request *ureq; |
034d7c13 | 650 | void *buf; |
3edeee38 | 651 | int len, sequence; |
034d7c13 KM |
652 | |
653 | if (usb_pipeisoc(urb->pipe)) { | |
654 | dev_err(dev, "pipe iso is not supported now\n"); | |
655 | return -EIO; | |
656 | } | |
657 | ||
ee8a0bf5 KM |
658 | /* this ureq will be freed on usbhsh_queue_done() */ |
659 | ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags); | |
660 | if (unlikely(!ureq)) { | |
661 | dev_err(dev, "ureq alloc fail\n"); | |
662 | return -ENOMEM; | |
663 | } | |
ee8a0bf5 | 664 | |
034d7c13 KM |
665 | if (usb_pipein(urb->pipe)) |
666 | pipe->handler = &usbhs_fifo_pio_pop_handler; | |
667 | else | |
668 | pipe->handler = &usbhs_fifo_pio_push_handler; | |
669 | ||
670 | buf = (void *)(urb->transfer_buffer + urb->actual_length); | |
671 | len = urb->transfer_buffer_length - urb->actual_length; | |
672 | ||
3edeee38 KM |
673 | sequence = usb_gettoggle(urb->dev, |
674 | usb_pipeendpoint(urb->pipe), | |
675 | usb_pipeout(urb->pipe)); | |
676 | ||
034d7c13 | 677 | dev_dbg(dev, "%s\n", __func__); |
ee8a0bf5 | 678 | usbhs_pkt_push(pipe, &ureq->pkt, usbhsh_queue_done, |
3edeee38 KM |
679 | buf, len, (urb->transfer_flags & URB_ZERO_PACKET), |
680 | sequence); | |
681 | ||
034d7c13 KM |
682 | usbhs_pkt_start(pipe); |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | /* | |
688 | * DCP setup stage | |
689 | */ | |
690 | static int usbhsh_is_request_address(struct urb *urb) | |
691 | { | |
25234b46 | 692 | struct usb_ctrlrequest *req; |
034d7c13 | 693 | |
25234b46 | 694 | req = (struct usb_ctrlrequest *)urb->setup_packet; |
034d7c13 | 695 | |
25234b46 KM |
696 | if ((DeviceOutRequest == req->bRequestType << 8) && |
697 | (USB_REQ_SET_ADDRESS == req->bRequest)) | |
034d7c13 KM |
698 | return 1; |
699 | else | |
700 | return 0; | |
701 | } | |
702 | ||
703 | static void usbhsh_setup_stage_packet_push(struct usbhsh_hpriv *hpriv, | |
704 | struct urb *urb, | |
705 | struct usbhs_pipe *pipe) | |
706 | { | |
707 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
708 | struct usb_ctrlrequest req; | |
709 | struct device *dev = usbhs_priv_to_dev(priv); | |
710 | ||
711 | /* | |
712 | * wait setup packet ACK | |
713 | * see | |
714 | * usbhsh_irq_setup_ack() | |
715 | * usbhsh_irq_setup_err() | |
716 | */ | |
7fccd480 | 717 | init_completion(&hpriv->setup_ack_done); |
034d7c13 KM |
718 | |
719 | /* copy original request */ | |
720 | memcpy(&req, urb->setup_packet, sizeof(struct usb_ctrlrequest)); | |
721 | ||
722 | /* | |
723 | * renesas_usbhs can not use original usb address. | |
724 | * see HARDWARE LIMITATION. | |
c1e4877a KM |
725 | * modify usb address here to use attached device. |
726 | * see usbhsh_device_attach() | |
034d7c13 KM |
727 | */ |
728 | if (usbhsh_is_request_address(urb)) { | |
c1e4877a KM |
729 | struct usb_device *usbv = usbhsh_urb_to_usbv(urb); |
730 | struct usbhsh_device *udev = usbhsh_usbv_to_udev(usbv); | |
731 | ||
732 | /* udev is a attached device */ | |
733 | req.wValue = usbhsh_device_number(hpriv, udev); | |
034d7c13 KM |
734 | dev_dbg(dev, "create new address - %d\n", req.wValue); |
735 | } | |
736 | ||
737 | /* set request */ | |
738 | usbhs_usbreq_set_val(priv, &req); | |
739 | ||
740 | /* | |
741 | * wait setup packet ACK | |
742 | */ | |
7fccd480 | 743 | wait_for_completion(&hpriv->setup_ack_done); |
034d7c13 KM |
744 | |
745 | dev_dbg(dev, "%s done\n", __func__); | |
746 | } | |
747 | ||
748 | /* | |
749 | * DCP data stage | |
750 | */ | |
751 | static void usbhsh_data_stage_packet_done(struct usbhs_priv *priv, | |
752 | struct usbhs_pkt *pkt) | |
753 | { | |
25234b46 | 754 | struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt); |
034d7c13 | 755 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); |
034d7c13 KM |
756 | |
757 | /* this ureq was connected to urb when usbhsh_urb_enqueue() */ | |
758 | ||
25234b46 | 759 | usbhsh_ureq_free(hpriv, ureq); |
034d7c13 KM |
760 | } |
761 | ||
ee8a0bf5 KM |
762 | static int usbhsh_data_stage_packet_push(struct usbhsh_hpriv *hpriv, |
763 | struct urb *urb, | |
764 | struct usbhs_pipe *pipe, | |
765 | gfp_t mem_flags) | |
766 | ||
034d7c13 KM |
767 | { |
768 | struct usbhsh_request *ureq; | |
034d7c13 | 769 | |
ee8a0bf5 KM |
770 | /* this ureq will be freed on usbhsh_data_stage_packet_done() */ |
771 | ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags); | |
772 | if (unlikely(!ureq)) | |
773 | return -ENOMEM; | |
034d7c13 KM |
774 | |
775 | if (usb_pipein(urb->pipe)) | |
776 | pipe->handler = &usbhs_dcp_data_stage_in_handler; | |
777 | else | |
778 | pipe->handler = &usbhs_dcp_data_stage_out_handler; | |
779 | ||
ee8a0bf5 | 780 | usbhs_pkt_push(pipe, &ureq->pkt, |
034d7c13 KM |
781 | usbhsh_data_stage_packet_done, |
782 | urb->transfer_buffer, | |
783 | urb->transfer_buffer_length, | |
3edeee38 KM |
784 | (urb->transfer_flags & URB_ZERO_PACKET), |
785 | -1); | |
ee8a0bf5 KM |
786 | |
787 | return 0; | |
034d7c13 KM |
788 | } |
789 | ||
790 | /* | |
791 | * DCP status stage | |
792 | */ | |
ee8a0bf5 | 793 | static int usbhsh_status_stage_packet_push(struct usbhsh_hpriv *hpriv, |
034d7c13 | 794 | struct urb *urb, |
ee8a0bf5 KM |
795 | struct usbhs_pipe *pipe, |
796 | gfp_t mem_flags) | |
034d7c13 KM |
797 | { |
798 | struct usbhsh_request *ureq; | |
034d7c13 | 799 | |
ee8a0bf5 KM |
800 | /* This ureq will be freed on usbhsh_queue_done() */ |
801 | ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags); | |
802 | if (unlikely(!ureq)) | |
803 | return -ENOMEM; | |
034d7c13 KM |
804 | |
805 | if (usb_pipein(urb->pipe)) | |
806 | pipe->handler = &usbhs_dcp_status_stage_in_handler; | |
807 | else | |
808 | pipe->handler = &usbhs_dcp_status_stage_out_handler; | |
809 | ||
ee8a0bf5 | 810 | usbhs_pkt_push(pipe, &ureq->pkt, |
034d7c13 KM |
811 | usbhsh_queue_done, |
812 | NULL, | |
813 | urb->transfer_buffer_length, | |
3edeee38 | 814 | 0, -1); |
ee8a0bf5 KM |
815 | |
816 | return 0; | |
034d7c13 KM |
817 | } |
818 | ||
819 | static int usbhsh_dcp_queue_push(struct usb_hcd *hcd, | |
ee8a0bf5 KM |
820 | struct urb *urb, |
821 | gfp_t mflags) | |
034d7c13 | 822 | { |
ee8a0bf5 | 823 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); |
3eddc9e4 KM |
824 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep); |
825 | struct usbhs_pipe *pipe = usbhsh_uep_to_pipe(uep); | |
034d7c13 | 826 | struct device *dev = usbhsh_hcd_to_dev(hcd); |
ee8a0bf5 | 827 | int ret; |
034d7c13 KM |
828 | |
829 | dev_dbg(dev, "%s\n", __func__); | |
830 | ||
831 | /* | |
832 | * setup stage | |
833 | * | |
834 | * usbhsh_send_setup_stage_packet() wait SACK/SIGN | |
835 | */ | |
836 | usbhsh_setup_stage_packet_push(hpriv, urb, pipe); | |
837 | ||
838 | /* | |
839 | * data stage | |
840 | * | |
841 | * It is pushed only when urb has buffer. | |
842 | */ | |
ee8a0bf5 KM |
843 | if (urb->transfer_buffer_length) { |
844 | ret = usbhsh_data_stage_packet_push(hpriv, urb, pipe, mflags); | |
845 | if (ret < 0) { | |
846 | dev_err(dev, "data stage failed\n"); | |
847 | return ret; | |
848 | } | |
849 | } | |
034d7c13 KM |
850 | |
851 | /* | |
852 | * status stage | |
853 | */ | |
ee8a0bf5 KM |
854 | ret = usbhsh_status_stage_packet_push(hpriv, urb, pipe, mflags); |
855 | if (ret < 0) { | |
856 | dev_err(dev, "status stage failed\n"); | |
857 | return ret; | |
858 | } | |
034d7c13 KM |
859 | |
860 | /* | |
861 | * start pushed packets | |
862 | */ | |
863 | usbhs_pkt_start(pipe); | |
864 | ||
865 | return 0; | |
866 | } | |
867 | ||
868 | /* | |
869 | * dma map functions | |
870 | */ | |
871 | static int usbhsh_dma_map_ctrl(struct usbhs_pkt *pkt, int map) | |
872 | { | |
873 | return 0; | |
874 | } | |
875 | ||
876 | /* | |
877 | * for hc_driver | |
878 | */ | |
879 | static int usbhsh_host_start(struct usb_hcd *hcd) | |
880 | { | |
881 | return 0; | |
882 | } | |
883 | ||
884 | static void usbhsh_host_stop(struct usb_hcd *hcd) | |
885 | { | |
886 | } | |
887 | ||
888 | static int usbhsh_urb_enqueue(struct usb_hcd *hcd, | |
889 | struct urb *urb, | |
890 | gfp_t mem_flags) | |
891 | { | |
892 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); | |
893 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
894 | struct device *dev = usbhs_priv_to_dev(priv); | |
034d7c13 | 895 | struct usb_host_endpoint *ep = urb->ep; |
7aac8d15 | 896 | struct usbhsh_device *new_udev = NULL; |
73ef635a | 897 | int is_dir_in = usb_pipein(urb->pipe); |
e5679d07 | 898 | int i; |
034d7c13 KM |
899 | int ret; |
900 | ||
73ef635a | 901 | dev_dbg(dev, "%s (%s)\n", __func__, is_dir_in ? "in" : "out"); |
034d7c13 KM |
902 | |
903 | ret = usb_hcd_link_urb_to_ep(hcd, urb); | |
904 | if (ret) | |
905 | goto usbhsh_urb_enqueue_error_not_linked; | |
906 | ||
907 | /* | |
7aac8d15 | 908 | * attach udev if needed |
e5679d07 | 909 | * see [image of mod_host] |
034d7c13 | 910 | */ |
c1e4877a | 911 | if (!usbhsh_device_get(hpriv, urb)) { |
7aac8d15 | 912 | new_udev = usbhsh_device_attach(hpriv, urb); |
37332ee0 KM |
913 | if (!new_udev) { |
914 | ret = -EIO; | |
034d7c13 | 915 | goto usbhsh_urb_enqueue_error_not_linked; |
37332ee0 | 916 | } |
034d7c13 KM |
917 | } |
918 | ||
919 | /* | |
4825093e | 920 | * attach endpoint if needed |
e5679d07 | 921 | * see [image of mod_host] |
034d7c13 | 922 | */ |
4825093e KM |
923 | if (!usbhsh_ep_to_uep(ep)) { |
924 | ret = usbhsh_endpoint_attach(hpriv, urb, mem_flags); | |
925 | if (ret < 0) | |
034d7c13 KM |
926 | goto usbhsh_urb_enqueue_error_free_device; |
927 | } | |
034d7c13 | 928 | |
e5679d07 KM |
929 | /* |
930 | * attach pipe to endpoint | |
931 | * see [image of mod_host] | |
932 | */ | |
933 | for (i = 0; i < 1024; i++) { | |
934 | ret = usbhsh_pipe_attach(hpriv, urb); | |
935 | if (ret < 0) | |
936 | msleep(100); | |
937 | else | |
938 | break; | |
939 | } | |
940 | if (ret < 0) | |
941 | goto usbhsh_urb_enqueue_error_free_endpoint; | |
942 | ||
034d7c13 KM |
943 | /* |
944 | * push packet | |
945 | */ | |
946 | if (usb_pipecontrol(urb->pipe)) | |
3eddc9e4 | 947 | ret = usbhsh_dcp_queue_push(hcd, urb, mem_flags); |
034d7c13 | 948 | else |
3eddc9e4 | 949 | ret = usbhsh_queue_push(hcd, urb, mem_flags); |
034d7c13 | 950 | |
ee8a0bf5 | 951 | return ret; |
034d7c13 | 952 | |
e5679d07 KM |
953 | usbhsh_urb_enqueue_error_free_endpoint: |
954 | usbhsh_endpoint_detach(hpriv, ep); | |
034d7c13 KM |
955 | usbhsh_urb_enqueue_error_free_device: |
956 | if (new_udev) | |
7aac8d15 | 957 | usbhsh_device_detach(hpriv, new_udev); |
034d7c13 KM |
958 | usbhsh_urb_enqueue_error_not_linked: |
959 | ||
960 | dev_dbg(dev, "%s error\n", __func__); | |
961 | ||
962 | return ret; | |
963 | } | |
964 | ||
965 | static int usbhsh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) | |
966 | { | |
967 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); | |
968 | struct usbhsh_request *ureq = usbhsh_urb_to_ureq(urb); | |
969 | ||
54796543 KM |
970 | if (ureq) { |
971 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
972 | struct usbhs_pkt *pkt = &ureq->pkt; | |
973 | ||
974 | usbhs_pkt_pop(pkt->pipe, pkt); | |
975 | usbhsh_queue_done(priv, pkt); | |
976 | } | |
034d7c13 KM |
977 | |
978 | return 0; | |
979 | } | |
980 | ||
981 | static void usbhsh_endpoint_disable(struct usb_hcd *hcd, | |
982 | struct usb_host_endpoint *ep) | |
983 | { | |
984 | struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep); | |
985 | struct usbhsh_device *udev; | |
986 | struct usbhsh_hpriv *hpriv; | |
987 | ||
988 | /* | |
989 | * this function might be called manytimes by same hcd/ep | |
fca8ab7e | 990 | * in-endpoint == out-endpoint if ep == dcp. |
034d7c13 KM |
991 | */ |
992 | if (!uep) | |
993 | return; | |
994 | ||
995 | udev = usbhsh_uep_to_udev(uep); | |
996 | hpriv = usbhsh_hcd_to_hpriv(hcd); | |
997 | ||
4825093e | 998 | usbhsh_endpoint_detach(hpriv, ep); |
034d7c13 KM |
999 | |
1000 | /* | |
1001 | * if there is no endpoint, | |
1002 | * free device | |
1003 | */ | |
1004 | if (!usbhsh_device_has_endpoint(udev)) | |
7aac8d15 | 1005 | usbhsh_device_detach(hpriv, udev); |
034d7c13 KM |
1006 | } |
1007 | ||
1008 | static int usbhsh_hub_status_data(struct usb_hcd *hcd, char *buf) | |
1009 | { | |
1010 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); | |
1011 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
1012 | struct device *dev = usbhs_priv_to_dev(priv); | |
1013 | int roothub_id = 1; /* only 1 root hub */ | |
1014 | ||
1015 | /* | |
1016 | * does port stat was changed ? | |
1017 | * check USB_PORT_STAT_C_xxx << 16 | |
1018 | */ | |
1019 | if (usbhsh_port_stat_get(hpriv) & 0xFFFF0000) | |
1020 | *buf = (1 << roothub_id); | |
1021 | else | |
1022 | *buf = 0; | |
1023 | ||
1024 | dev_dbg(dev, "%s (%02x)\n", __func__, *buf); | |
1025 | ||
1026 | return !!(*buf); | |
1027 | } | |
1028 | ||
1029 | static int __usbhsh_hub_hub_feature(struct usbhsh_hpriv *hpriv, | |
1030 | u16 typeReq, u16 wValue, | |
1031 | u16 wIndex, char *buf, u16 wLength) | |
1032 | { | |
1033 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
1034 | struct device *dev = usbhs_priv_to_dev(priv); | |
1035 | ||
1036 | switch (wValue) { | |
1037 | case C_HUB_OVER_CURRENT: | |
1038 | case C_HUB_LOCAL_POWER: | |
1039 | dev_dbg(dev, "%s :: C_HUB_xx\n", __func__); | |
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | return -EPIPE; | |
1044 | } | |
1045 | ||
1046 | static int __usbhsh_hub_port_feature(struct usbhsh_hpriv *hpriv, | |
1047 | u16 typeReq, u16 wValue, | |
1048 | u16 wIndex, char *buf, u16 wLength) | |
1049 | { | |
1050 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
1051 | struct device *dev = usbhs_priv_to_dev(priv); | |
1052 | int enable = (typeReq == SetPortFeature); | |
1053 | int speed, i, timeout = 128; | |
1054 | int roothub_id = 1; /* only 1 root hub */ | |
1055 | ||
1056 | /* common error */ | |
1057 | if (wIndex > roothub_id || wLength != 0) | |
1058 | return -EPIPE; | |
1059 | ||
1060 | /* check wValue */ | |
1061 | switch (wValue) { | |
1062 | case USB_PORT_FEAT_POWER: | |
1063 | usbhs_vbus_ctrl(priv, enable); | |
1064 | dev_dbg(dev, "%s :: USB_PORT_FEAT_POWER\n", __func__); | |
1065 | break; | |
1066 | ||
1067 | case USB_PORT_FEAT_ENABLE: | |
1068 | case USB_PORT_FEAT_SUSPEND: | |
1069 | case USB_PORT_FEAT_C_ENABLE: | |
1070 | case USB_PORT_FEAT_C_SUSPEND: | |
1071 | case USB_PORT_FEAT_C_CONNECTION: | |
1072 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
1073 | case USB_PORT_FEAT_C_RESET: | |
1074 | dev_dbg(dev, "%s :: USB_PORT_FEAT_xxx\n", __func__); | |
1075 | break; | |
1076 | ||
1077 | case USB_PORT_FEAT_RESET: | |
1078 | if (!enable) | |
1079 | break; | |
1080 | ||
1081 | usbhsh_port_stat_clear(hpriv, | |
1082 | USB_PORT_STAT_HIGH_SPEED | | |
1083 | USB_PORT_STAT_LOW_SPEED); | |
1084 | ||
1085 | usbhs_bus_send_reset(priv); | |
1086 | msleep(20); | |
1087 | usbhs_bus_send_sof_enable(priv); | |
1088 | ||
1089 | for (i = 0; i < timeout ; i++) { | |
1090 | switch (usbhs_bus_get_speed(priv)) { | |
1091 | case USB_SPEED_LOW: | |
1092 | speed = USB_PORT_STAT_LOW_SPEED; | |
1093 | goto got_usb_bus_speed; | |
1094 | case USB_SPEED_HIGH: | |
1095 | speed = USB_PORT_STAT_HIGH_SPEED; | |
1096 | goto got_usb_bus_speed; | |
1097 | case USB_SPEED_FULL: | |
1098 | speed = 0; | |
1099 | goto got_usb_bus_speed; | |
1100 | } | |
1101 | ||
1102 | msleep(20); | |
1103 | } | |
1104 | return -EPIPE; | |
1105 | ||
1106 | got_usb_bus_speed: | |
1107 | usbhsh_port_stat_set(hpriv, speed); | |
1108 | usbhsh_port_stat_set(hpriv, USB_PORT_STAT_ENABLE); | |
1109 | ||
1110 | dev_dbg(dev, "%s :: USB_PORT_FEAT_RESET (speed = %d)\n", | |
1111 | __func__, speed); | |
1112 | ||
1113 | /* status change is not needed */ | |
1114 | return 0; | |
1115 | ||
1116 | default: | |
1117 | return -EPIPE; | |
1118 | } | |
1119 | ||
1120 | /* set/clear status */ | |
1121 | if (enable) | |
1122 | usbhsh_port_stat_set(hpriv, (1 << wValue)); | |
1123 | else | |
1124 | usbhsh_port_stat_clear(hpriv, (1 << wValue)); | |
1125 | ||
1126 | return 0; | |
1127 | } | |
1128 | ||
1129 | static int __usbhsh_hub_get_status(struct usbhsh_hpriv *hpriv, | |
1130 | u16 typeReq, u16 wValue, | |
1131 | u16 wIndex, char *buf, u16 wLength) | |
1132 | { | |
1133 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
1134 | struct usb_hub_descriptor *desc = (struct usb_hub_descriptor *)buf; | |
1135 | struct device *dev = usbhs_priv_to_dev(priv); | |
1136 | int roothub_id = 1; /* only 1 root hub */ | |
1137 | ||
1138 | switch (typeReq) { | |
1139 | case GetHubStatus: | |
1140 | dev_dbg(dev, "%s :: GetHubStatus\n", __func__); | |
1141 | ||
1142 | *buf = 0x00; | |
1143 | break; | |
1144 | ||
1145 | case GetPortStatus: | |
1146 | if (wIndex != roothub_id) | |
1147 | return -EPIPE; | |
1148 | ||
1149 | dev_dbg(dev, "%s :: GetPortStatus\n", __func__); | |
1150 | *(__le32 *)buf = cpu_to_le32(usbhsh_port_stat_get(hpriv)); | |
1151 | break; | |
1152 | ||
1153 | case GetHubDescriptor: | |
1154 | desc->bDescriptorType = 0x29; | |
1155 | desc->bHubContrCurrent = 0; | |
1156 | desc->bNbrPorts = roothub_id; | |
1157 | desc->bDescLength = 9; | |
1158 | desc->bPwrOn2PwrGood = 0; | |
1159 | desc->wHubCharacteristics = cpu_to_le16(0x0011); | |
1160 | desc->u.hs.DeviceRemovable[0] = (roothub_id << 1); | |
1161 | desc->u.hs.DeviceRemovable[1] = ~0; | |
1162 | dev_dbg(dev, "%s :: GetHubDescriptor\n", __func__); | |
1163 | break; | |
1164 | } | |
1165 | ||
1166 | return 0; | |
1167 | } | |
1168 | ||
1169 | static int usbhsh_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, | |
1170 | u16 wIndex, char *buf, u16 wLength) | |
1171 | { | |
1172 | struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd); | |
1173 | struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); | |
1174 | struct device *dev = usbhs_priv_to_dev(priv); | |
1175 | int ret = -EPIPE; | |
1176 | ||
1177 | switch (typeReq) { | |
1178 | ||
1179 | /* Hub Feature */ | |
1180 | case ClearHubFeature: | |
1181 | case SetHubFeature: | |
1182 | ret = __usbhsh_hub_hub_feature(hpriv, typeReq, | |
1183 | wValue, wIndex, buf, wLength); | |
1184 | break; | |
1185 | ||
1186 | /* Port Feature */ | |
1187 | case SetPortFeature: | |
1188 | case ClearPortFeature: | |
1189 | ret = __usbhsh_hub_port_feature(hpriv, typeReq, | |
1190 | wValue, wIndex, buf, wLength); | |
1191 | break; | |
1192 | ||
1193 | /* Get status */ | |
1194 | case GetHubStatus: | |
1195 | case GetPortStatus: | |
1196 | case GetHubDescriptor: | |
1197 | ret = __usbhsh_hub_get_status(hpriv, typeReq, | |
1198 | wValue, wIndex, buf, wLength); | |
1199 | break; | |
1200 | } | |
1201 | ||
1202 | dev_dbg(dev, "typeReq = %x, ret = %d, port_stat = %x\n", | |
1203 | typeReq, ret, usbhsh_port_stat_get(hpriv)); | |
1204 | ||
1205 | return ret; | |
1206 | } | |
1207 | ||
1208 | static struct hc_driver usbhsh_driver = { | |
1209 | .description = usbhsh_hcd_name, | |
1210 | .hcd_priv_size = sizeof(struct usbhsh_hpriv), | |
1211 | ||
1212 | /* | |
1213 | * generic hardware linkage | |
1214 | */ | |
1215 | .flags = HCD_USB2, | |
1216 | ||
1217 | .start = usbhsh_host_start, | |
1218 | .stop = usbhsh_host_stop, | |
1219 | ||
1220 | /* | |
1221 | * managing i/o requests and associated device resources | |
1222 | */ | |
1223 | .urb_enqueue = usbhsh_urb_enqueue, | |
1224 | .urb_dequeue = usbhsh_urb_dequeue, | |
1225 | .endpoint_disable = usbhsh_endpoint_disable, | |
1226 | ||
1227 | /* | |
1228 | * root hub | |
1229 | */ | |
1230 | .hub_status_data = usbhsh_hub_status_data, | |
1231 | .hub_control = usbhsh_hub_control, | |
1232 | }; | |
1233 | ||
1234 | /* | |
1235 | * interrupt functions | |
1236 | */ | |
1237 | static int usbhsh_irq_attch(struct usbhs_priv *priv, | |
1238 | struct usbhs_irq_state *irq_state) | |
1239 | { | |
1240 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1241 | struct device *dev = usbhs_priv_to_dev(priv); | |
1242 | ||
1243 | dev_dbg(dev, "device attached\n"); | |
1244 | ||
1245 | usbhsh_port_stat_set(hpriv, USB_PORT_STAT_CONNECTION); | |
1246 | usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16); | |
1247 | ||
31e00fd1 KM |
1248 | /* |
1249 | * attch interrupt might happen infinitely on some device | |
1250 | * (on self power USB hub ?) | |
1251 | * disable it here. | |
1252 | */ | |
1253 | hpriv->mod.irq_attch = NULL; | |
1254 | usbhs_irq_callback_update(priv, &hpriv->mod); | |
1255 | ||
034d7c13 KM |
1256 | return 0; |
1257 | } | |
1258 | ||
1259 | static int usbhsh_irq_dtch(struct usbhs_priv *priv, | |
1260 | struct usbhs_irq_state *irq_state) | |
1261 | { | |
1262 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1263 | struct device *dev = usbhs_priv_to_dev(priv); | |
1264 | ||
1265 | dev_dbg(dev, "device detached\n"); | |
1266 | ||
1267 | usbhsh_port_stat_clear(hpriv, USB_PORT_STAT_CONNECTION); | |
1268 | usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16); | |
1269 | ||
31e00fd1 KM |
1270 | /* |
1271 | * enable attch interrupt again | |
1272 | */ | |
1273 | hpriv->mod.irq_attch = usbhsh_irq_attch; | |
1274 | usbhs_irq_callback_update(priv, &hpriv->mod); | |
1275 | ||
034d7c13 KM |
1276 | return 0; |
1277 | } | |
1278 | ||
1279 | static int usbhsh_irq_setup_ack(struct usbhs_priv *priv, | |
1280 | struct usbhs_irq_state *irq_state) | |
1281 | { | |
1282 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1283 | struct device *dev = usbhs_priv_to_dev(priv); | |
1284 | ||
1285 | dev_dbg(dev, "setup packet OK\n"); | |
1286 | ||
7fccd480 | 1287 | complete(&hpriv->setup_ack_done); /* see usbhsh_urb_enqueue() */ |
034d7c13 KM |
1288 | |
1289 | return 0; | |
1290 | } | |
1291 | ||
1292 | static int usbhsh_irq_setup_err(struct usbhs_priv *priv, | |
1293 | struct usbhs_irq_state *irq_state) | |
1294 | { | |
1295 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1296 | struct device *dev = usbhs_priv_to_dev(priv); | |
1297 | ||
1298 | dev_dbg(dev, "setup packet Err\n"); | |
1299 | ||
7fccd480 | 1300 | complete(&hpriv->setup_ack_done); /* see usbhsh_urb_enqueue() */ |
034d7c13 KM |
1301 | |
1302 | return 0; | |
1303 | } | |
1304 | ||
1305 | /* | |
1306 | * module start/stop | |
1307 | */ | |
1308 | static void usbhsh_pipe_init_for_host(struct usbhs_priv *priv) | |
1309 | { | |
1310 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
034d7c13 KM |
1311 | struct usbhs_pipe *pipe; |
1312 | u32 *pipe_type = usbhs_get_dparam(priv, pipe_type); | |
1313 | int pipe_size = usbhs_get_dparam(priv, pipe_size); | |
1314 | int old_type, dir_in, i; | |
1315 | ||
1316 | /* init all pipe */ | |
1317 | old_type = USB_ENDPOINT_XFER_CONTROL; | |
1318 | for (i = 0; i < pipe_size; i++) { | |
034d7c13 KM |
1319 | |
1320 | /* | |
1321 | * data "output" will be finished as soon as possible, | |
1322 | * but there is no guaranty at data "input" case. | |
1323 | * | |
1324 | * "input" needs "standby" pipe. | |
1325 | * So, "input" direction pipe > "output" direction pipe | |
1326 | * is good idea. | |
1327 | * | |
1328 | * 1st USB_ENDPOINT_XFER_xxx will be output direction, | |
1329 | * and the other will be input direction here. | |
1330 | * | |
1331 | * ex) | |
1332 | * ... | |
1333 | * USB_ENDPOINT_XFER_ISOC -> dir out | |
1334 | * USB_ENDPOINT_XFER_ISOC -> dir in | |
1335 | * USB_ENDPOINT_XFER_BULK -> dir out | |
1336 | * USB_ENDPOINT_XFER_BULK -> dir in | |
1337 | * USB_ENDPOINT_XFER_BULK -> dir in | |
1338 | * ... | |
1339 | */ | |
1340 | dir_in = (pipe_type[i] == old_type); | |
1341 | old_type = pipe_type[i]; | |
1342 | ||
1343 | if (USB_ENDPOINT_XFER_CONTROL == pipe_type[i]) { | |
1344 | pipe = usbhs_dcp_malloc(priv); | |
1345 | usbhsh_hpriv_to_dcp(hpriv) = pipe; | |
1346 | } else { | |
1347 | pipe = usbhs_pipe_malloc(priv, | |
1348 | pipe_type[i], | |
1349 | dir_in); | |
1350 | } | |
1351 | ||
e5679d07 | 1352 | pipe->mod_private = NULL; |
034d7c13 KM |
1353 | } |
1354 | } | |
1355 | ||
1356 | static int usbhsh_start(struct usbhs_priv *priv) | |
1357 | { | |
1358 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1359 | struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv); | |
1360 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
1361 | struct device *dev = usbhs_priv_to_dev(priv); | |
1362 | int ret; | |
1363 | ||
1364 | /* add hcd */ | |
1365 | ret = usb_add_hcd(hcd, 0, 0); | |
1366 | if (ret < 0) | |
1367 | return 0; | |
1368 | ||
1369 | /* | |
1370 | * pipe initialize and enable DCP | |
1371 | */ | |
1372 | usbhs_pipe_init(priv, | |
1373 | usbhsh_dma_map_ctrl); | |
1374 | usbhs_fifo_init(priv); | |
1375 | usbhsh_pipe_init_for_host(priv); | |
1376 | ||
1377 | /* | |
1378 | * system config enble | |
1379 | * - HI speed | |
1380 | * - host | |
1381 | * - usb module | |
1382 | */ | |
034d7c13 | 1383 | usbhs_sys_host_ctrl(priv, 1); |
034d7c13 KM |
1384 | |
1385 | /* | |
1386 | * enable irq callback | |
1387 | */ | |
1388 | mod->irq_attch = usbhsh_irq_attch; | |
1389 | mod->irq_dtch = usbhsh_irq_dtch; | |
1390 | mod->irq_sack = usbhsh_irq_setup_ack; | |
1391 | mod->irq_sign = usbhsh_irq_setup_err; | |
1392 | usbhs_irq_callback_update(priv, mod); | |
1393 | ||
1394 | dev_dbg(dev, "start host\n"); | |
1395 | ||
1396 | return ret; | |
1397 | } | |
1398 | ||
1399 | static int usbhsh_stop(struct usbhs_priv *priv) | |
1400 | { | |
1401 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1402 | struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv); | |
146ee50a | 1403 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); |
034d7c13 KM |
1404 | struct device *dev = usbhs_priv_to_dev(priv); |
1405 | ||
146ee50a KM |
1406 | /* |
1407 | * disable irq callback | |
1408 | */ | |
1409 | mod->irq_attch = NULL; | |
1410 | mod->irq_dtch = NULL; | |
1411 | mod->irq_sack = NULL; | |
1412 | mod->irq_sign = NULL; | |
1413 | usbhs_irq_callback_update(priv, mod); | |
1414 | ||
034d7c13 KM |
1415 | usb_remove_hcd(hcd); |
1416 | ||
1417 | /* disable sys */ | |
034d7c13 | 1418 | usbhs_sys_host_ctrl(priv, 0); |
034d7c13 KM |
1419 | |
1420 | dev_dbg(dev, "quit host\n"); | |
1421 | ||
1422 | return 0; | |
1423 | } | |
1424 | ||
b7a8d17d | 1425 | int usbhs_mod_host_probe(struct usbhs_priv *priv) |
034d7c13 KM |
1426 | { |
1427 | struct usbhsh_hpriv *hpriv; | |
1428 | struct usb_hcd *hcd; | |
034d7c13 KM |
1429 | struct usbhsh_device *udev; |
1430 | struct device *dev = usbhs_priv_to_dev(priv); | |
034d7c13 KM |
1431 | int i; |
1432 | ||
1433 | /* initialize hcd */ | |
1434 | hcd = usb_create_hcd(&usbhsh_driver, dev, usbhsh_hcd_name); | |
1435 | if (!hcd) { | |
1436 | dev_err(dev, "Failed to create hcd\n"); | |
1437 | return -ENOMEM; | |
1438 | } | |
1439 | ||
034d7c13 KM |
1440 | /* |
1441 | * CAUTION | |
1442 | * | |
1443 | * There is no guarantee that it is possible to access usb module here. | |
1444 | * Don't accesses to it. | |
1445 | * The accesse will be enable after "usbhsh_start" | |
1446 | */ | |
1447 | ||
1448 | hpriv = usbhsh_hcd_to_hpriv(hcd); | |
1449 | ||
1450 | /* | |
1451 | * register itself | |
1452 | */ | |
1453 | usbhs_mod_register(priv, &hpriv->mod, USBHS_HOST); | |
1454 | ||
1455 | /* init hpriv */ | |
1456 | hpriv->mod.name = "host"; | |
1457 | hpriv->mod.start = usbhsh_start; | |
1458 | hpriv->mod.stop = usbhsh_stop; | |
034d7c13 KM |
1459 | usbhsh_port_stat_init(hpriv); |
1460 | ||
1461 | /* init all device */ | |
1462 | usbhsh_for_each_udev_with_dev0(udev, hpriv, i) { | |
1463 | udev->usbv = NULL; | |
1464 | INIT_LIST_HEAD(&udev->ep_list_head); | |
1465 | } | |
1466 | ||
1467 | dev_info(dev, "host probed\n"); | |
1468 | ||
1469 | return 0; | |
034d7c13 KM |
1470 | } |
1471 | ||
b7a8d17d | 1472 | int usbhs_mod_host_remove(struct usbhs_priv *priv) |
034d7c13 KM |
1473 | { |
1474 | struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv); | |
1475 | struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv); | |
1476 | ||
034d7c13 KM |
1477 | usb_put_hcd(hcd); |
1478 | ||
1479 | return 0; | |
1480 | } |