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2f98382d 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 | */ | |
d128a259 | 17 | #include <linux/dma-mapping.h> |
2f98382d KM |
18 | #include <linux/io.h> |
19 | #include <linux/module.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/usb/ch9.h> | |
22 | #include <linux/usb/gadget.h> | |
23 | #include "common.h" | |
24 | ||
25 | /* | |
26 | * struct | |
27 | */ | |
28 | struct usbhsg_request { | |
29 | struct usb_request req; | |
4bd04811 | 30 | struct usbhs_pkt pkt; |
2f98382d KM |
31 | }; |
32 | ||
33 | #define EP_NAME_SIZE 8 | |
34 | struct usbhsg_gpriv; | |
2f98382d KM |
35 | struct usbhsg_uep { |
36 | struct usb_ep ep; | |
37 | struct usbhs_pipe *pipe; | |
2f98382d KM |
38 | |
39 | char ep_name[EP_NAME_SIZE]; | |
40 | ||
41 | struct usbhsg_gpriv *gpriv; | |
2f98382d KM |
42 | }; |
43 | ||
44 | struct usbhsg_gpriv { | |
45 | struct usb_gadget gadget; | |
46 | struct usbhs_mod mod; | |
3b872188 | 47 | struct list_head link; |
2f98382d KM |
48 | |
49 | struct usbhsg_uep *uep; | |
50 | int uep_size; | |
51 | ||
52 | struct usb_gadget_driver *driver; | |
53 | ||
54 | u32 status; | |
55 | #define USBHSG_STATUS_STARTED (1 << 0) | |
56 | #define USBHSG_STATUS_REGISTERD (1 << 1) | |
57 | #define USBHSG_STATUS_WEDGE (1 << 2) | |
58 | }; | |
59 | ||
2f98382d KM |
60 | struct usbhsg_recip_handle { |
61 | char *name; | |
62 | int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
63 | struct usb_ctrlrequest *ctrl); | |
64 | int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
65 | struct usb_ctrlrequest *ctrl); | |
66 | int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
67 | struct usb_ctrlrequest *ctrl); | |
68 | }; | |
69 | ||
70 | /* | |
71 | * macro | |
72 | */ | |
73 | #define usbhsg_priv_to_gpriv(priv) \ | |
74 | container_of( \ | |
75 | usbhs_mod_get(priv, USBHS_GADGET), \ | |
76 | struct usbhsg_gpriv, mod) | |
77 | ||
78 | #define __usbhsg_for_each_uep(start, pos, g, i) \ | |
e94c587e | 79 | for (i = start, pos = (g)->uep + i; \ |
2f98382d KM |
80 | i < (g)->uep_size; \ |
81 | i++, pos = (g)->uep + i) | |
82 | ||
83 | #define usbhsg_for_each_uep(pos, gpriv, i) \ | |
84 | __usbhsg_for_each_uep(1, pos, gpriv, i) | |
85 | ||
86 | #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \ | |
87 | __usbhsg_for_each_uep(0, pos, gpriv, i) | |
88 | ||
89 | #define usbhsg_gadget_to_gpriv(g)\ | |
90 | container_of(g, struct usbhsg_gpriv, gadget) | |
91 | ||
92 | #define usbhsg_req_to_ureq(r)\ | |
93 | container_of(r, struct usbhsg_request, req) | |
94 | ||
95 | #define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep) | |
2f98382d KM |
96 | #define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv) |
97 | #define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv) | |
98 | #define usbhsg_gpriv_to_dcp(gp) ((gp)->uep) | |
99 | #define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i) | |
100 | #define usbhsg_uep_to_gpriv(u) ((u)->gpriv) | |
101 | #define usbhsg_uep_to_pipe(u) ((u)->pipe) | |
102 | #define usbhsg_pipe_to_uep(p) ((p)->mod_private) | |
103 | #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv)) | |
104 | ||
4bd04811 KM |
105 | #define usbhsg_ureq_to_pkt(u) (&(u)->pkt) |
106 | #define usbhsg_pkt_to_ureq(i) \ | |
107 | container_of(i, struct usbhsg_request, pkt) | |
108 | ||
2f98382d KM |
109 | #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN) |
110 | ||
111 | /* status */ | |
112 | #define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0) | |
113 | #define usbhsg_status_set(gp, b) (gp->status |= b) | |
114 | #define usbhsg_status_clr(gp, b) (gp->status &= ~b) | |
115 | #define usbhsg_status_has(gp, b) (gp->status & b) | |
116 | ||
3b872188 KM |
117 | /* controller */ |
118 | LIST_HEAD(the_controller_link); | |
119 | ||
120 | #define usbhsg_for_each_controller(gpriv)\ | |
121 | list_for_each_entry(gpriv, &the_controller_link, link) | |
122 | #define usbhsg_controller_register(gpriv)\ | |
123 | list_add_tail(&(gpriv)->link, &the_controller_link) | |
124 | #define usbhsg_controller_unregister(gpriv)\ | |
125 | list_del_init(&(gpriv)->link) | |
126 | ||
2f98382d | 127 | /* |
233f519d | 128 | * queue push/pop |
2f98382d KM |
129 | */ |
130 | static void usbhsg_queue_push(struct usbhsg_uep *uep, | |
131 | struct usbhsg_request *ureq) | |
132 | { | |
133 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
134 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
135 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
6acb95d4 | 136 | struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); |
659d4954 | 137 | struct usb_request *req = &ureq->req; |
2f98382d | 138 | |
659d4954 KM |
139 | req->actual = 0; |
140 | req->status = -EINPROGRESS; | |
0c6ef985 | 141 | usbhs_pkt_push(pipe, pkt, req->buf, req->length, req->zero); |
2f98382d KM |
142 | |
143 | dev_dbg(dev, "pipe %d : queue push (%d)\n", | |
144 | usbhs_pipe_number(pipe), | |
659d4954 | 145 | req->length); |
2f98382d KM |
146 | } |
147 | ||
2f98382d KM |
148 | static void usbhsg_queue_pop(struct usbhsg_uep *uep, |
149 | struct usbhsg_request *ureq, | |
150 | int status) | |
151 | { | |
152 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
153 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
154 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
2f98382d KM |
155 | |
156 | dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe)); | |
157 | ||
2f98382d KM |
158 | ureq->req.status = status; |
159 | ureq->req.complete(&uep->ep, &ureq->req); | |
2f98382d KM |
160 | } |
161 | ||
2cc97197 | 162 | static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt) |
2f98382d | 163 | { |
4bd04811 KM |
164 | struct usbhs_pipe *pipe = pkt->pipe; |
165 | struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); | |
166 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); | |
2f98382d | 167 | |
659d4954 | 168 | ureq->req.actual = pkt->actual; |
2f98382d | 169 | |
659d4954 | 170 | usbhsg_queue_pop(uep, ureq, 0); |
4bd04811 KM |
171 | } |
172 | ||
233f519d KM |
173 | /* |
174 | * dma map/unmap | |
175 | */ | |
e73a9891 KM |
176 | static int usbhsg_dma_map(struct device *dev, |
177 | struct usbhs_pkt *pkt, | |
178 | enum dma_data_direction dir) | |
179 | { | |
180 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); | |
181 | struct usb_request *req = &ureq->req; | |
182 | ||
183 | if (pkt->dma != DMA_ADDR_INVALID) { | |
184 | dev_err(dev, "dma is already mapped\n"); | |
185 | return -EIO; | |
186 | } | |
187 | ||
188 | if (req->dma == DMA_ADDR_INVALID) { | |
189 | pkt->dma = dma_map_single(dev, pkt->buf, pkt->length, dir); | |
190 | } else { | |
191 | dma_sync_single_for_device(dev, req->dma, req->length, dir); | |
192 | pkt->dma = req->dma; | |
193 | } | |
194 | ||
195 | if (dma_mapping_error(dev, pkt->dma)) { | |
196 | dev_err(dev, "dma mapping error %x\n", pkt->dma); | |
197 | return -EIO; | |
198 | } | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | static int usbhsg_dma_unmap(struct device *dev, | |
204 | struct usbhs_pkt *pkt, | |
205 | enum dma_data_direction dir) | |
206 | { | |
207 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); | |
208 | struct usb_request *req = &ureq->req; | |
209 | ||
210 | if (pkt->dma == DMA_ADDR_INVALID) { | |
211 | dev_err(dev, "dma is not mapped\n"); | |
212 | return -EIO; | |
213 | } | |
214 | ||
215 | if (req->dma == DMA_ADDR_INVALID) | |
216 | dma_unmap_single(dev, pkt->dma, pkt->length, dir); | |
217 | else | |
218 | dma_sync_single_for_cpu(dev, req->dma, req->length, dir); | |
219 | ||
220 | pkt->dma = DMA_ADDR_INVALID; | |
221 | ||
222 | return 0; | |
223 | } | |
224 | ||
225 | static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map) | |
226 | { | |
227 | struct usbhs_pipe *pipe = pkt->pipe; | |
228 | struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); | |
229 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
230 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
231 | enum dma_data_direction dir; | |
232 | ||
233 | dir = usbhs_pipe_is_dir_in(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; | |
234 | ||
235 | if (map) | |
236 | return usbhsg_dma_map(dev, pkt, dir); | |
237 | else | |
238 | return usbhsg_dma_unmap(dev, pkt, dir); | |
239 | } | |
240 | ||
2f98382d KM |
241 | /* |
242 | * USB_TYPE_STANDARD / clear feature functions | |
243 | */ | |
244 | static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv, | |
245 | struct usbhsg_uep *uep, | |
246 | struct usb_ctrlrequest *ctrl) | |
247 | { | |
248 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
249 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
250 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); | |
251 | ||
252 | usbhs_dcp_control_transfer_done(pipe); | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv, | |
258 | struct usbhsg_uep *uep, | |
259 | struct usb_ctrlrequest *ctrl) | |
260 | { | |
261 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
262 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
263 | ||
264 | if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) { | |
e8d548d5 | 265 | usbhs_pipe_disable(pipe); |
2f98382d | 266 | usbhs_pipe_clear_sequence(pipe); |
e8d548d5 | 267 | usbhs_pipe_enable(pipe); |
2f98382d KM |
268 | } |
269 | ||
270 | usbhsg_recip_handler_std_control_done(priv, uep, ctrl); | |
271 | ||
2f98382d KM |
272 | return 0; |
273 | } | |
274 | ||
275 | struct usbhsg_recip_handle req_clear_feature = { | |
276 | .name = "clear feature", | |
277 | .device = usbhsg_recip_handler_std_control_done, | |
278 | .interface = usbhsg_recip_handler_std_control_done, | |
279 | .endpoint = usbhsg_recip_handler_std_clear_endpoint, | |
280 | }; | |
281 | ||
282 | /* | |
283 | * USB_TYPE handler | |
284 | */ | |
285 | static int usbhsg_recip_run_handle(struct usbhs_priv *priv, | |
286 | struct usbhsg_recip_handle *handler, | |
287 | struct usb_ctrlrequest *ctrl) | |
288 | { | |
289 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
290 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
291 | struct usbhsg_uep *uep; | |
0432eed0 | 292 | struct usbhs_pipe *pipe; |
2f98382d KM |
293 | int recip = ctrl->bRequestType & USB_RECIP_MASK; |
294 | int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; | |
295 | int ret; | |
296 | int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
297 | struct usb_ctrlrequest *ctrl); | |
298 | char *msg; | |
299 | ||
300 | uep = usbhsg_gpriv_to_nth_uep(gpriv, nth); | |
0432eed0 KM |
301 | pipe = usbhsg_uep_to_pipe(uep); |
302 | if (!pipe) { | |
9a28b7bd | 303 | dev_err(dev, "wrong recip request\n"); |
97664a20 KM |
304 | ret = -EINVAL; |
305 | goto usbhsg_recip_run_handle_end; | |
9a28b7bd | 306 | } |
2f98382d KM |
307 | |
308 | switch (recip) { | |
309 | case USB_RECIP_DEVICE: | |
310 | msg = "DEVICE"; | |
311 | func = handler->device; | |
312 | break; | |
313 | case USB_RECIP_INTERFACE: | |
314 | msg = "INTERFACE"; | |
315 | func = handler->interface; | |
316 | break; | |
317 | case USB_RECIP_ENDPOINT: | |
318 | msg = "ENDPOINT"; | |
319 | func = handler->endpoint; | |
320 | break; | |
321 | default: | |
322 | dev_warn(dev, "unsupported RECIP(%d)\n", recip); | |
323 | func = NULL; | |
324 | ret = -EINVAL; | |
325 | } | |
326 | ||
327 | if (func) { | |
97664a20 KM |
328 | unsigned long flags; |
329 | ||
2f98382d | 330 | dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg); |
97664a20 KM |
331 | |
332 | /******************** spin lock ********************/ | |
333 | usbhs_lock(priv, flags); | |
2f98382d | 334 | ret = func(priv, uep, ctrl); |
97664a20 KM |
335 | usbhs_unlock(priv, flags); |
336 | /******************** spin unlock ******************/ | |
2f98382d KM |
337 | } |
338 | ||
97664a20 | 339 | usbhsg_recip_run_handle_end: |
0432eed0 | 340 | usbhs_pkt_start(pipe); |
97664a20 | 341 | |
2f98382d KM |
342 | return ret; |
343 | } | |
344 | ||
345 | /* | |
346 | * irq functions | |
347 | * | |
348 | * it will be called from usbhs_interrupt | |
349 | */ | |
350 | static int usbhsg_irq_dev_state(struct usbhs_priv *priv, | |
351 | struct usbhs_irq_state *irq_state) | |
352 | { | |
353 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
354 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
355 | ||
75587f52 | 356 | gpriv->gadget.speed = usbhs_bus_get_speed(priv); |
2f98382d KM |
357 | |
358 | dev_dbg(dev, "state = %x : speed : %d\n", | |
359 | usbhs_status_get_device_state(irq_state), | |
360 | gpriv->gadget.speed); | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv, | |
366 | struct usbhs_irq_state *irq_state) | |
367 | { | |
368 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
369 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
370 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); | |
371 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
372 | struct usb_ctrlrequest ctrl; | |
373 | struct usbhsg_recip_handle *recip_handler = NULL; | |
374 | int stage = usbhs_status_get_ctrl_stage(irq_state); | |
375 | int ret = 0; | |
376 | ||
377 | dev_dbg(dev, "stage = %d\n", stage); | |
378 | ||
379 | /* | |
380 | * see Manual | |
381 | * | |
382 | * "Operation" | |
383 | * - "Interrupt Function" | |
384 | * - "Control Transfer Stage Transition Interrupt" | |
385 | * - Fig. "Control Transfer Stage Transitions" | |
386 | */ | |
387 | ||
388 | switch (stage) { | |
389 | case READ_DATA_STAGE: | |
0c6ef985 | 390 | pipe->handler = &usbhs_fifo_pio_push_handler; |
2f98382d KM |
391 | break; |
392 | case WRITE_DATA_STAGE: | |
0c6ef985 | 393 | pipe->handler = &usbhs_fifo_pio_pop_handler; |
2f98382d KM |
394 | break; |
395 | case NODATA_STATUS_STAGE: | |
0c6ef985 | 396 | pipe->handler = &usbhs_ctrl_stage_end_handler; |
2f98382d KM |
397 | break; |
398 | default: | |
399 | return ret; | |
400 | } | |
401 | ||
402 | /* | |
403 | * get usb request | |
404 | */ | |
405 | usbhs_usbreq_get_val(priv, &ctrl); | |
406 | ||
407 | switch (ctrl.bRequestType & USB_TYPE_MASK) { | |
408 | case USB_TYPE_STANDARD: | |
409 | switch (ctrl.bRequest) { | |
410 | case USB_REQ_CLEAR_FEATURE: | |
411 | recip_handler = &req_clear_feature; | |
412 | break; | |
413 | } | |
414 | } | |
415 | ||
416 | /* | |
417 | * setup stage / run recip | |
418 | */ | |
419 | if (recip_handler) | |
420 | ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl); | |
421 | else | |
422 | ret = gpriv->driver->setup(&gpriv->gadget, &ctrl); | |
423 | ||
424 | if (ret < 0) | |
e8d548d5 | 425 | usbhs_pipe_stall(pipe); |
2f98382d KM |
426 | |
427 | return ret; | |
428 | } | |
429 | ||
2f98382d KM |
430 | /* |
431 | * | |
432 | * usb_dcp_ops | |
433 | * | |
434 | */ | |
2f98382d KM |
435 | static int usbhsg_pipe_disable(struct usbhsg_uep *uep) |
436 | { | |
437 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
8a2c225d | 438 | struct usbhs_pkt *pkt; |
2f98382d | 439 | |
e8d548d5 | 440 | usbhs_pipe_disable(pipe); |
2f98382d | 441 | |
2f98382d | 442 | while (1) { |
97664a20 | 443 | pkt = usbhs_pkt_pop(pipe, NULL); |
8a2c225d | 444 | if (!pkt) |
2f98382d | 445 | break; |
2f98382d KM |
446 | } |
447 | ||
2f98382d KM |
448 | return 0; |
449 | } | |
450 | ||
409ba9e7 KM |
451 | static void usbhsg_uep_init(struct usbhsg_gpriv *gpriv) |
452 | { | |
453 | int i; | |
454 | struct usbhsg_uep *uep; | |
455 | ||
456 | usbhsg_for_each_uep_with_dcp(uep, gpriv, i) | |
457 | uep->pipe = NULL; | |
458 | } | |
459 | ||
2f98382d KM |
460 | /* |
461 | * | |
462 | * usb_ep_ops | |
463 | * | |
464 | */ | |
465 | static int usbhsg_ep_enable(struct usb_ep *ep, | |
466 | const struct usb_endpoint_descriptor *desc) | |
467 | { | |
468 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
469 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
470 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); | |
471 | struct usbhs_pipe *pipe; | |
2f98382d KM |
472 | int ret = -EIO; |
473 | ||
409ba9e7 KM |
474 | /* |
475 | * if it already have pipe, | |
476 | * nothing to do | |
477 | */ | |
08e6c611 KM |
478 | if (uep->pipe) { |
479 | usbhs_pipe_clear(uep->pipe); | |
480 | usbhs_pipe_clear_sequence(uep->pipe); | |
409ba9e7 | 481 | return 0; |
08e6c611 | 482 | } |
409ba9e7 | 483 | |
f5aa889f KM |
484 | pipe = usbhs_pipe_malloc(priv, |
485 | usb_endpoint_type(desc), | |
486 | usb_endpoint_dir_in(desc)); | |
2f98382d KM |
487 | if (pipe) { |
488 | uep->pipe = pipe; | |
489 | pipe->mod_private = uep; | |
2f98382d | 490 | |
f5aa889f KM |
491 | /* set epnum / maxp */ |
492 | usbhs_pipe_config_update(pipe, | |
493 | usb_endpoint_num(desc), | |
494 | usb_endpoint_maxp(desc)); | |
495 | ||
233f519d KM |
496 | /* |
497 | * usbhs_fifo_dma_push/pop_handler try to | |
498 | * use dmaengine if possible. | |
499 | * It will use pio handler if impossible. | |
500 | */ | |
2f98382d | 501 | if (usb_endpoint_dir_in(desc)) |
0c6ef985 | 502 | pipe->handler = &usbhs_fifo_dma_push_handler; |
2f98382d | 503 | else |
0c6ef985 | 504 | pipe->handler = &usbhs_fifo_dma_pop_handler; |
2f98382d KM |
505 | |
506 | ret = 0; | |
507 | } | |
cb96632c | 508 | |
2f98382d KM |
509 | return ret; |
510 | } | |
511 | ||
512 | static int usbhsg_ep_disable(struct usb_ep *ep) | |
513 | { | |
514 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
2f98382d | 515 | |
97664a20 | 516 | return usbhsg_pipe_disable(uep); |
2f98382d KM |
517 | } |
518 | ||
519 | static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep, | |
520 | gfp_t gfp_flags) | |
521 | { | |
522 | struct usbhsg_request *ureq; | |
523 | ||
524 | ureq = kzalloc(sizeof *ureq, gfp_flags); | |
525 | if (!ureq) | |
526 | return NULL; | |
527 | ||
6acb95d4 KM |
528 | usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq)); |
529 | ||
e73a9891 KM |
530 | ureq->req.dma = DMA_ADDR_INVALID; |
531 | ||
2f98382d KM |
532 | return &ureq->req; |
533 | } | |
534 | ||
535 | static void usbhsg_ep_free_request(struct usb_ep *ep, | |
536 | struct usb_request *req) | |
537 | { | |
538 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); | |
539 | ||
6acb95d4 | 540 | WARN_ON(!list_empty(&ureq->pkt.node)); |
2f98382d KM |
541 | kfree(ureq); |
542 | } | |
543 | ||
544 | static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req, | |
545 | gfp_t gfp_flags) | |
546 | { | |
547 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
548 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
549 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); | |
550 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
2f98382d KM |
551 | |
552 | /* param check */ | |
553 | if (usbhsg_is_not_connected(gpriv) || | |
554 | unlikely(!gpriv->driver) || | |
555 | unlikely(!pipe)) | |
97664a20 | 556 | return -ESHUTDOWN; |
2f98382d | 557 | |
97664a20 | 558 | usbhsg_queue_push(uep, ureq); |
2f98382d | 559 | |
97664a20 | 560 | return 0; |
2f98382d KM |
561 | } |
562 | ||
563 | static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) | |
564 | { | |
565 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
566 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); | |
97664a20 | 567 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
2f98382d | 568 | |
97664a20 | 569 | usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq)); |
2f98382d KM |
570 | usbhsg_queue_pop(uep, ureq, -ECONNRESET); |
571 | ||
2f98382d KM |
572 | return 0; |
573 | } | |
574 | ||
575 | static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge) | |
576 | { | |
577 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
578 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
579 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
97664a20 | 580 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
2f98382d | 581 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
2f98382d | 582 | unsigned long flags; |
2f98382d | 583 | |
97664a20 | 584 | usbhsg_pipe_disable(uep); |
2f98382d | 585 | |
97664a20 KM |
586 | dev_dbg(dev, "set halt %d (pipe %d)\n", |
587 | halt, usbhs_pipe_number(pipe)); | |
2f98382d | 588 | |
97664a20 KM |
589 | /******************** spin lock ********************/ |
590 | usbhs_lock(priv, flags); | |
2f98382d | 591 | |
97664a20 KM |
592 | if (halt) |
593 | usbhs_pipe_stall(pipe); | |
594 | else | |
595 | usbhs_pipe_disable(pipe); | |
2f98382d | 596 | |
97664a20 KM |
597 | if (halt && wedge) |
598 | usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE); | |
599 | else | |
600 | usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE); | |
2f98382d | 601 | |
97664a20 | 602 | usbhs_unlock(priv, flags); |
2f98382d KM |
603 | /******************** spin unlock ******************/ |
604 | ||
97664a20 | 605 | return 0; |
2f98382d KM |
606 | } |
607 | ||
608 | static int usbhsg_ep_set_halt(struct usb_ep *ep, int value) | |
609 | { | |
610 | return __usbhsg_ep_set_halt_wedge(ep, value, 0); | |
611 | } | |
612 | ||
613 | static int usbhsg_ep_set_wedge(struct usb_ep *ep) | |
614 | { | |
615 | return __usbhsg_ep_set_halt_wedge(ep, 1, 1); | |
616 | } | |
617 | ||
618 | static struct usb_ep_ops usbhsg_ep_ops = { | |
619 | .enable = usbhsg_ep_enable, | |
620 | .disable = usbhsg_ep_disable, | |
621 | ||
622 | .alloc_request = usbhsg_ep_alloc_request, | |
623 | .free_request = usbhsg_ep_free_request, | |
624 | ||
625 | .queue = usbhsg_ep_queue, | |
626 | .dequeue = usbhsg_ep_dequeue, | |
627 | ||
628 | .set_halt = usbhsg_ep_set_halt, | |
629 | .set_wedge = usbhsg_ep_set_wedge, | |
630 | }; | |
631 | ||
632 | /* | |
633 | * usb module start/end | |
634 | */ | |
635 | static int usbhsg_try_start(struct usbhs_priv *priv, u32 status) | |
636 | { | |
637 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
638 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
639 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
640 | struct device *dev = usbhs_priv_to_dev(priv); | |
2f98382d | 641 | unsigned long flags; |
97664a20 | 642 | int ret = 0; |
2f98382d KM |
643 | |
644 | /******************** spin lock ********************/ | |
97664a20 | 645 | usbhs_lock(priv, flags); |
2f98382d | 646 | |
2f98382d KM |
647 | usbhsg_status_set(gpriv, status); |
648 | if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && | |
649 | usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))) | |
97664a20 KM |
650 | ret = -1; /* not ready */ |
651 | ||
652 | usbhs_unlock(priv, flags); | |
653 | /******************** spin unlock ********************/ | |
654 | ||
655 | if (ret < 0) | |
656 | return 0; /* not ready is not error */ | |
2f98382d | 657 | |
97664a20 KM |
658 | /* |
659 | * enable interrupt and systems if ready | |
660 | */ | |
2f98382d KM |
661 | dev_dbg(dev, "start gadget\n"); |
662 | ||
663 | /* | |
664 | * pipe initialize and enable DCP | |
665 | */ | |
4bd04811 | 666 | usbhs_pipe_init(priv, |
e73a9891 KM |
667 | usbhsg_queue_done, |
668 | usbhsg_dma_map_ctrl); | |
dad67397 | 669 | usbhs_fifo_init(priv); |
409ba9e7 | 670 | usbhsg_uep_init(gpriv); |
97664a20 KM |
671 | |
672 | /* dcp init */ | |
673 | dcp->pipe = usbhs_dcp_malloc(priv); | |
674 | dcp->pipe->mod_private = dcp; | |
f5aa889f | 675 | usbhs_pipe_config_update(dcp->pipe, 0, 64); |
2f98382d KM |
676 | |
677 | /* | |
678 | * system config enble | |
679 | * - HI speed | |
680 | * - function | |
681 | * - usb module | |
682 | */ | |
683 | usbhs_sys_hispeed_ctrl(priv, 1); | |
684 | usbhs_sys_function_ctrl(priv, 1); | |
685 | usbhs_sys_usb_ctrl(priv, 1); | |
686 | ||
687 | /* | |
688 | * enable irq callback | |
689 | */ | |
690 | mod->irq_dev_state = usbhsg_irq_dev_state; | |
691 | mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage; | |
2f98382d KM |
692 | usbhs_irq_callback_update(priv, mod); |
693 | ||
2f98382d KM |
694 | return 0; |
695 | } | |
696 | ||
697 | static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status) | |
698 | { | |
699 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
700 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
701 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
702 | struct device *dev = usbhs_priv_to_dev(priv); | |
2f98382d | 703 | unsigned long flags; |
97664a20 | 704 | int ret = 0; |
2f98382d KM |
705 | |
706 | /******************** spin lock ********************/ | |
97664a20 | 707 | usbhs_lock(priv, flags); |
2f98382d | 708 | |
2f98382d KM |
709 | usbhsg_status_clr(gpriv, status); |
710 | if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && | |
711 | !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)) | |
97664a20 KM |
712 | ret = -1; /* already done */ |
713 | ||
714 | usbhs_unlock(priv, flags); | |
715 | /******************** spin unlock ********************/ | |
716 | ||
717 | if (ret < 0) | |
718 | return 0; /* already done is not error */ | |
2f98382d | 719 | |
97664a20 KM |
720 | /* |
721 | * disable interrupt and systems if 1st try | |
722 | */ | |
dad67397 KM |
723 | usbhs_fifo_quit(priv); |
724 | ||
2f98382d KM |
725 | /* disable all irq */ |
726 | mod->irq_dev_state = NULL; | |
727 | mod->irq_ctrl_stage = NULL; | |
2f98382d KM |
728 | usbhs_irq_callback_update(priv, mod); |
729 | ||
2f98382d KM |
730 | gpriv->gadget.speed = USB_SPEED_UNKNOWN; |
731 | ||
732 | /* disable sys */ | |
733 | usbhs_sys_hispeed_ctrl(priv, 0); | |
734 | usbhs_sys_function_ctrl(priv, 0); | |
735 | usbhs_sys_usb_ctrl(priv, 0); | |
736 | ||
97664a20 | 737 | usbhsg_pipe_disable(dcp); |
2f98382d | 738 | |
2f98382d KM |
739 | dev_dbg(dev, "stop gadget\n"); |
740 | ||
2f98382d KM |
741 | return 0; |
742 | } | |
743 | ||
744 | /* | |
745 | * | |
746 | * linux usb function | |
747 | * | |
748 | */ | |
af1d7056 FB |
749 | static int usbhsg_gadget_start(struct usb_gadget *gadget, |
750 | struct usb_gadget_driver *driver) | |
2f98382d | 751 | { |
af1d7056 | 752 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
2f98382d KM |
753 | struct usbhs_priv *priv; |
754 | struct device *dev; | |
755 | int ret; | |
756 | ||
af1d7056 | 757 | if (!driver || |
2f98382d KM |
758 | !driver->setup || |
759 | driver->speed != USB_SPEED_HIGH) | |
760 | return -EINVAL; | |
3b872188 | 761 | |
2f98382d KM |
762 | dev = usbhsg_gpriv_to_dev(gpriv); |
763 | priv = usbhsg_gpriv_to_priv(gpriv); | |
764 | ||
765 | /* first hook up the driver ... */ | |
766 | gpriv->driver = driver; | |
767 | gpriv->gadget.dev.driver = &driver->driver; | |
768 | ||
769 | ret = device_add(&gpriv->gadget.dev); | |
770 | if (ret) { | |
771 | dev_err(dev, "device_add error %d\n", ret); | |
772 | goto add_fail; | |
773 | } | |
774 | ||
2f98382d KM |
775 | return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD); |
776 | ||
2f98382d KM |
777 | add_fail: |
778 | gpriv->driver = NULL; | |
779 | gpriv->gadget.dev.driver = NULL; | |
780 | ||
781 | return ret; | |
782 | } | |
2f98382d | 783 | |
af1d7056 FB |
784 | static int usbhsg_gadget_stop(struct usb_gadget *gadget, |
785 | struct usb_gadget_driver *driver) | |
2f98382d | 786 | { |
af1d7056 | 787 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
2f98382d | 788 | struct usbhs_priv *priv; |
3b872188 | 789 | struct device *dev; |
2f98382d KM |
790 | |
791 | if (!driver || | |
3b872188 | 792 | !driver->unbind) |
2f98382d KM |
793 | return -EINVAL; |
794 | ||
795 | dev = usbhsg_gpriv_to_dev(gpriv); | |
796 | priv = usbhsg_gpriv_to_priv(gpriv); | |
797 | ||
798 | usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD); | |
799 | device_del(&gpriv->gadget.dev); | |
800 | gpriv->driver = NULL; | |
801 | ||
2f98382d KM |
802 | return 0; |
803 | } | |
2f98382d KM |
804 | |
805 | /* | |
806 | * usb gadget ops | |
807 | */ | |
808 | static int usbhsg_get_frame(struct usb_gadget *gadget) | |
809 | { | |
810 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); | |
811 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); | |
812 | ||
813 | return usbhs_frame_get_num(priv); | |
814 | } | |
815 | ||
816 | static struct usb_gadget_ops usbhsg_gadget_ops = { | |
817 | .get_frame = usbhsg_get_frame, | |
af1d7056 FB |
818 | .udc_start = usbhsg_gadget_start, |
819 | .udc_stop = usbhsg_gadget_stop, | |
2f98382d KM |
820 | }; |
821 | ||
822 | static int usbhsg_start(struct usbhs_priv *priv) | |
823 | { | |
824 | return usbhsg_try_start(priv, USBHSG_STATUS_STARTED); | |
825 | } | |
826 | ||
827 | static int usbhsg_stop(struct usbhs_priv *priv) | |
828 | { | |
829 | return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED); | |
830 | } | |
831 | ||
832 | int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv) | |
833 | { | |
834 | struct usbhsg_gpriv *gpriv; | |
835 | struct usbhsg_uep *uep; | |
836 | struct device *dev = usbhs_priv_to_dev(priv); | |
837 | int pipe_size = usbhs_get_dparam(priv, pipe_size); | |
838 | int i; | |
0f91349b | 839 | int ret; |
2f98382d KM |
840 | |
841 | gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL); | |
842 | if (!gpriv) { | |
843 | dev_err(dev, "Could not allocate gadget priv\n"); | |
844 | return -ENOMEM; | |
845 | } | |
846 | ||
847 | uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL); | |
848 | if (!uep) { | |
849 | dev_err(dev, "Could not allocate ep\n"); | |
0f91349b | 850 | ret = -ENOMEM; |
2f98382d KM |
851 | goto usbhs_mod_gadget_probe_err_gpriv; |
852 | } | |
853 | ||
854 | /* | |
855 | * CAUTION | |
856 | * | |
857 | * There is no guarantee that it is possible to access usb module here. | |
858 | * Don't accesses to it. | |
859 | * The accesse will be enable after "usbhsg_start" | |
860 | */ | |
861 | ||
862 | /* | |
863 | * register itself | |
864 | */ | |
865 | usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET); | |
866 | ||
867 | /* init gpriv */ | |
868 | gpriv->mod.name = "gadget"; | |
869 | gpriv->mod.start = usbhsg_start; | |
870 | gpriv->mod.stop = usbhsg_stop; | |
871 | gpriv->uep = uep; | |
872 | gpriv->uep_size = pipe_size; | |
873 | usbhsg_status_init(gpriv); | |
874 | ||
875 | /* | |
876 | * init gadget | |
877 | */ | |
878 | device_initialize(&gpriv->gadget.dev); | |
879 | dev_set_name(&gpriv->gadget.dev, "gadget"); | |
880 | gpriv->gadget.dev.parent = dev; | |
881 | gpriv->gadget.name = "renesas_usbhs_udc"; | |
882 | gpriv->gadget.ops = &usbhsg_gadget_ops; | |
883 | gpriv->gadget.is_dualspeed = 1; | |
884 | ||
885 | INIT_LIST_HEAD(&gpriv->gadget.ep_list); | |
886 | ||
887 | /* | |
888 | * init usb_ep | |
889 | */ | |
890 | usbhsg_for_each_uep_with_dcp(uep, gpriv, i) { | |
891 | uep->gpriv = gpriv; | |
892 | snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i); | |
893 | ||
894 | uep->ep.name = uep->ep_name; | |
895 | uep->ep.ops = &usbhsg_ep_ops; | |
896 | INIT_LIST_HEAD(&uep->ep.ep_list); | |
2f98382d KM |
897 | |
898 | /* init DCP */ | |
899 | if (usbhsg_is_dcp(uep)) { | |
900 | gpriv->gadget.ep0 = &uep->ep; | |
901 | uep->ep.maxpacket = 64; | |
902 | } | |
903 | /* init normal pipe */ | |
904 | else { | |
905 | uep->ep.maxpacket = 512; | |
906 | list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list); | |
907 | } | |
908 | } | |
909 | ||
3b872188 | 910 | usbhsg_controller_register(gpriv); |
2f98382d | 911 | |
0f91349b SAS |
912 | ret = usb_add_gadget_udc(dev, &gpriv->gadget); |
913 | if (ret) | |
914 | goto err_add_udc; | |
915 | ||
916 | ||
2f98382d KM |
917 | dev_info(dev, "gadget probed\n"); |
918 | ||
919 | return 0; | |
0f91349b SAS |
920 | err_add_udc: |
921 | kfree(gpriv->uep); | |
2f98382d KM |
922 | |
923 | usbhs_mod_gadget_probe_err_gpriv: | |
924 | kfree(gpriv); | |
925 | ||
0f91349b | 926 | return ret; |
2f98382d KM |
927 | } |
928 | ||
929 | void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv) | |
930 | { | |
931 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
932 | ||
0f91349b | 933 | usb_del_gadget_udc(&gpriv->gadget); |
3b872188 KM |
934 | |
935 | usbhsg_controller_unregister(gpriv); | |
936 | ||
3af51ac9 | 937 | kfree(gpriv->uep); |
2f98382d KM |
938 | kfree(gpriv); |
939 | } |