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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; | |
dad67397 | 42 | struct usbhs_pkt_handle *handler; |
2f98382d KM |
43 | }; |
44 | ||
45 | struct usbhsg_gpriv { | |
46 | struct usb_gadget gadget; | |
47 | struct usbhs_mod mod; | |
3b872188 | 48 | struct list_head link; |
2f98382d KM |
49 | |
50 | struct usbhsg_uep *uep; | |
51 | int uep_size; | |
52 | ||
53 | struct usb_gadget_driver *driver; | |
54 | ||
55 | u32 status; | |
56 | #define USBHSG_STATUS_STARTED (1 << 0) | |
57 | #define USBHSG_STATUS_REGISTERD (1 << 1) | |
58 | #define USBHSG_STATUS_WEDGE (1 << 2) | |
59 | }; | |
60 | ||
2f98382d KM |
61 | struct usbhsg_recip_handle { |
62 | char *name; | |
63 | int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
64 | struct usb_ctrlrequest *ctrl); | |
65 | int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
66 | struct usb_ctrlrequest *ctrl); | |
67 | int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
68 | struct usb_ctrlrequest *ctrl); | |
69 | }; | |
70 | ||
71 | /* | |
72 | * macro | |
73 | */ | |
74 | #define usbhsg_priv_to_gpriv(priv) \ | |
75 | container_of( \ | |
76 | usbhs_mod_get(priv, USBHS_GADGET), \ | |
77 | struct usbhsg_gpriv, mod) | |
78 | ||
79 | #define __usbhsg_for_each_uep(start, pos, g, i) \ | |
e94c587e | 80 | for (i = start, pos = (g)->uep + i; \ |
2f98382d KM |
81 | i < (g)->uep_size; \ |
82 | i++, pos = (g)->uep + i) | |
83 | ||
84 | #define usbhsg_for_each_uep(pos, gpriv, i) \ | |
85 | __usbhsg_for_each_uep(1, pos, gpriv, i) | |
86 | ||
87 | #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \ | |
88 | __usbhsg_for_each_uep(0, pos, gpriv, i) | |
89 | ||
90 | #define usbhsg_gadget_to_gpriv(g)\ | |
91 | container_of(g, struct usbhsg_gpriv, gadget) | |
92 | ||
93 | #define usbhsg_req_to_ureq(r)\ | |
94 | container_of(r, struct usbhsg_request, req) | |
95 | ||
96 | #define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep) | |
2f98382d KM |
97 | #define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv) |
98 | #define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv) | |
99 | #define usbhsg_gpriv_to_dcp(gp) ((gp)->uep) | |
100 | #define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i) | |
101 | #define usbhsg_uep_to_gpriv(u) ((u)->gpriv) | |
102 | #define usbhsg_uep_to_pipe(u) ((u)->pipe) | |
103 | #define usbhsg_pipe_to_uep(p) ((p)->mod_private) | |
104 | #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv)) | |
105 | ||
4bd04811 KM |
106 | #define usbhsg_ureq_to_pkt(u) (&(u)->pkt) |
107 | #define usbhsg_pkt_to_ureq(i) \ | |
108 | container_of(i, struct usbhsg_request, pkt) | |
109 | ||
2f98382d KM |
110 | #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN) |
111 | ||
112 | /* status */ | |
113 | #define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0) | |
114 | #define usbhsg_status_set(gp, b) (gp->status |= b) | |
115 | #define usbhsg_status_clr(gp, b) (gp->status &= ~b) | |
116 | #define usbhsg_status_has(gp, b) (gp->status & b) | |
117 | ||
3b872188 KM |
118 | /* controller */ |
119 | LIST_HEAD(the_controller_link); | |
120 | ||
121 | #define usbhsg_for_each_controller(gpriv)\ | |
122 | list_for_each_entry(gpriv, &the_controller_link, link) | |
123 | #define usbhsg_controller_register(gpriv)\ | |
124 | list_add_tail(&(gpriv)->link, &the_controller_link) | |
125 | #define usbhsg_controller_unregister(gpriv)\ | |
126 | list_del_init(&(gpriv)->link) | |
127 | ||
2f98382d | 128 | /* |
233f519d | 129 | * queue push/pop |
2f98382d KM |
130 | */ |
131 | static void usbhsg_queue_push(struct usbhsg_uep *uep, | |
132 | struct usbhsg_request *ureq) | |
133 | { | |
134 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
135 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
136 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
6acb95d4 | 137 | struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); |
659d4954 | 138 | struct usb_request *req = &ureq->req; |
2f98382d | 139 | |
659d4954 KM |
140 | req->actual = 0; |
141 | req->status = -EINPROGRESS; | |
0432eed0 KM |
142 | usbhs_pkt_push(pipe, pkt, uep->handler, |
143 | req->buf, req->length, req->zero); | |
2f98382d KM |
144 | |
145 | dev_dbg(dev, "pipe %d : queue push (%d)\n", | |
146 | usbhs_pipe_number(pipe), | |
659d4954 | 147 | req->length); |
2f98382d KM |
148 | } |
149 | ||
2f98382d KM |
150 | static void usbhsg_queue_pop(struct usbhsg_uep *uep, |
151 | struct usbhsg_request *ureq, | |
152 | int status) | |
153 | { | |
154 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
155 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
156 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
2f98382d KM |
157 | |
158 | dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe)); | |
159 | ||
2f98382d KM |
160 | ureq->req.status = status; |
161 | ureq->req.complete(&uep->ep, &ureq->req); | |
2f98382d KM |
162 | } |
163 | ||
dad67397 | 164 | static void usbhsg_queue_done(struct usbhs_pkt *pkt) |
2f98382d | 165 | { |
4bd04811 KM |
166 | struct usbhs_pipe *pipe = pkt->pipe; |
167 | struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); | |
168 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); | |
2f98382d | 169 | |
659d4954 | 170 | ureq->req.actual = pkt->actual; |
2f98382d | 171 | |
659d4954 | 172 | usbhsg_queue_pop(uep, ureq, 0); |
4bd04811 KM |
173 | } |
174 | ||
233f519d KM |
175 | /* |
176 | * dma map/unmap | |
177 | */ | |
e73a9891 KM |
178 | static int usbhsg_dma_map(struct device *dev, |
179 | struct usbhs_pkt *pkt, | |
180 | enum dma_data_direction dir) | |
181 | { | |
182 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); | |
183 | struct usb_request *req = &ureq->req; | |
184 | ||
185 | if (pkt->dma != DMA_ADDR_INVALID) { | |
186 | dev_err(dev, "dma is already mapped\n"); | |
187 | return -EIO; | |
188 | } | |
189 | ||
190 | if (req->dma == DMA_ADDR_INVALID) { | |
191 | pkt->dma = dma_map_single(dev, pkt->buf, pkt->length, dir); | |
192 | } else { | |
193 | dma_sync_single_for_device(dev, req->dma, req->length, dir); | |
194 | pkt->dma = req->dma; | |
195 | } | |
196 | ||
197 | if (dma_mapping_error(dev, pkt->dma)) { | |
198 | dev_err(dev, "dma mapping error %x\n", pkt->dma); | |
199 | return -EIO; | |
200 | } | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
205 | static int usbhsg_dma_unmap(struct device *dev, | |
206 | struct usbhs_pkt *pkt, | |
207 | enum dma_data_direction dir) | |
208 | { | |
209 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); | |
210 | struct usb_request *req = &ureq->req; | |
211 | ||
212 | if (pkt->dma == DMA_ADDR_INVALID) { | |
213 | dev_err(dev, "dma is not mapped\n"); | |
214 | return -EIO; | |
215 | } | |
216 | ||
217 | if (req->dma == DMA_ADDR_INVALID) | |
218 | dma_unmap_single(dev, pkt->dma, pkt->length, dir); | |
219 | else | |
220 | dma_sync_single_for_cpu(dev, req->dma, req->length, dir); | |
221 | ||
222 | pkt->dma = DMA_ADDR_INVALID; | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map) | |
228 | { | |
229 | struct usbhs_pipe *pipe = pkt->pipe; | |
230 | struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); | |
231 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
232 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
233 | enum dma_data_direction dir; | |
234 | ||
235 | dir = usbhs_pipe_is_dir_in(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; | |
236 | ||
237 | if (map) | |
238 | return usbhsg_dma_map(dev, pkt, dir); | |
239 | else | |
240 | return usbhsg_dma_unmap(dev, pkt, dir); | |
241 | } | |
242 | ||
2f98382d KM |
243 | /* |
244 | * USB_TYPE_STANDARD / clear feature functions | |
245 | */ | |
246 | static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv, | |
247 | struct usbhsg_uep *uep, | |
248 | struct usb_ctrlrequest *ctrl) | |
249 | { | |
250 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
251 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
252 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); | |
253 | ||
254 | usbhs_dcp_control_transfer_done(pipe); | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
259 | static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv, | |
260 | struct usbhsg_uep *uep, | |
261 | struct usb_ctrlrequest *ctrl) | |
262 | { | |
263 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
264 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
265 | ||
266 | if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) { | |
e8d548d5 | 267 | usbhs_pipe_disable(pipe); |
2f98382d | 268 | usbhs_pipe_clear_sequence(pipe); |
e8d548d5 | 269 | usbhs_pipe_enable(pipe); |
2f98382d KM |
270 | } |
271 | ||
272 | usbhsg_recip_handler_std_control_done(priv, uep, ctrl); | |
273 | ||
2f98382d KM |
274 | return 0; |
275 | } | |
276 | ||
277 | struct usbhsg_recip_handle req_clear_feature = { | |
278 | .name = "clear feature", | |
279 | .device = usbhsg_recip_handler_std_control_done, | |
280 | .interface = usbhsg_recip_handler_std_control_done, | |
281 | .endpoint = usbhsg_recip_handler_std_clear_endpoint, | |
282 | }; | |
283 | ||
284 | /* | |
285 | * USB_TYPE handler | |
286 | */ | |
287 | static int usbhsg_recip_run_handle(struct usbhs_priv *priv, | |
288 | struct usbhsg_recip_handle *handler, | |
289 | struct usb_ctrlrequest *ctrl) | |
290 | { | |
291 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
292 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
293 | struct usbhsg_uep *uep; | |
0432eed0 | 294 | struct usbhs_pipe *pipe; |
2f98382d KM |
295 | int recip = ctrl->bRequestType & USB_RECIP_MASK; |
296 | int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; | |
297 | int ret; | |
298 | int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep, | |
299 | struct usb_ctrlrequest *ctrl); | |
300 | char *msg; | |
301 | ||
302 | uep = usbhsg_gpriv_to_nth_uep(gpriv, nth); | |
0432eed0 KM |
303 | pipe = usbhsg_uep_to_pipe(uep); |
304 | if (!pipe) { | |
9a28b7bd | 305 | dev_err(dev, "wrong recip request\n"); |
97664a20 KM |
306 | ret = -EINVAL; |
307 | goto usbhsg_recip_run_handle_end; | |
9a28b7bd | 308 | } |
2f98382d KM |
309 | |
310 | switch (recip) { | |
311 | case USB_RECIP_DEVICE: | |
312 | msg = "DEVICE"; | |
313 | func = handler->device; | |
314 | break; | |
315 | case USB_RECIP_INTERFACE: | |
316 | msg = "INTERFACE"; | |
317 | func = handler->interface; | |
318 | break; | |
319 | case USB_RECIP_ENDPOINT: | |
320 | msg = "ENDPOINT"; | |
321 | func = handler->endpoint; | |
322 | break; | |
323 | default: | |
324 | dev_warn(dev, "unsupported RECIP(%d)\n", recip); | |
325 | func = NULL; | |
326 | ret = -EINVAL; | |
327 | } | |
328 | ||
329 | if (func) { | |
97664a20 KM |
330 | unsigned long flags; |
331 | ||
2f98382d | 332 | dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg); |
97664a20 KM |
333 | |
334 | /******************** spin lock ********************/ | |
335 | usbhs_lock(priv, flags); | |
2f98382d | 336 | ret = func(priv, uep, ctrl); |
97664a20 KM |
337 | usbhs_unlock(priv, flags); |
338 | /******************** spin unlock ******************/ | |
2f98382d KM |
339 | } |
340 | ||
97664a20 | 341 | usbhsg_recip_run_handle_end: |
0432eed0 | 342 | usbhs_pkt_start(pipe); |
97664a20 | 343 | |
2f98382d KM |
344 | return ret; |
345 | } | |
346 | ||
347 | /* | |
348 | * irq functions | |
349 | * | |
350 | * it will be called from usbhs_interrupt | |
351 | */ | |
352 | static int usbhsg_irq_dev_state(struct usbhs_priv *priv, | |
353 | struct usbhs_irq_state *irq_state) | |
354 | { | |
355 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
356 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
357 | ||
358 | gpriv->gadget.speed = usbhs_status_get_usb_speed(irq_state); | |
359 | ||
360 | dev_dbg(dev, "state = %x : speed : %d\n", | |
361 | usbhs_status_get_device_state(irq_state), | |
362 | gpriv->gadget.speed); | |
363 | ||
364 | return 0; | |
365 | } | |
366 | ||
367 | static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv, | |
368 | struct usbhs_irq_state *irq_state) | |
369 | { | |
370 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
371 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
372 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); | |
373 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); | |
374 | struct usb_ctrlrequest ctrl; | |
375 | struct usbhsg_recip_handle *recip_handler = NULL; | |
376 | int stage = usbhs_status_get_ctrl_stage(irq_state); | |
377 | int ret = 0; | |
378 | ||
379 | dev_dbg(dev, "stage = %d\n", stage); | |
380 | ||
381 | /* | |
382 | * see Manual | |
383 | * | |
384 | * "Operation" | |
385 | * - "Interrupt Function" | |
386 | * - "Control Transfer Stage Transition Interrupt" | |
387 | * - Fig. "Control Transfer Stage Transitions" | |
388 | */ | |
389 | ||
390 | switch (stage) { | |
391 | case READ_DATA_STAGE: | |
0cb7e61d | 392 | dcp->handler = &usbhs_fifo_pio_push_handler; |
2f98382d KM |
393 | break; |
394 | case WRITE_DATA_STAGE: | |
0cb7e61d | 395 | dcp->handler = &usbhs_fifo_pio_pop_handler; |
2f98382d KM |
396 | break; |
397 | case NODATA_STATUS_STAGE: | |
dad67397 | 398 | dcp->handler = &usbhs_ctrl_stage_end_handler; |
2f98382d KM |
399 | break; |
400 | default: | |
401 | return ret; | |
402 | } | |
403 | ||
404 | /* | |
405 | * get usb request | |
406 | */ | |
407 | usbhs_usbreq_get_val(priv, &ctrl); | |
408 | ||
409 | switch (ctrl.bRequestType & USB_TYPE_MASK) { | |
410 | case USB_TYPE_STANDARD: | |
411 | switch (ctrl.bRequest) { | |
412 | case USB_REQ_CLEAR_FEATURE: | |
413 | recip_handler = &req_clear_feature; | |
414 | break; | |
415 | } | |
416 | } | |
417 | ||
418 | /* | |
419 | * setup stage / run recip | |
420 | */ | |
421 | if (recip_handler) | |
422 | ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl); | |
423 | else | |
424 | ret = gpriv->driver->setup(&gpriv->gadget, &ctrl); | |
425 | ||
426 | if (ret < 0) | |
e8d548d5 | 427 | usbhs_pipe_stall(pipe); |
2f98382d KM |
428 | |
429 | return ret; | |
430 | } | |
431 | ||
2f98382d KM |
432 | /* |
433 | * | |
434 | * usb_dcp_ops | |
435 | * | |
436 | */ | |
2f98382d KM |
437 | static int usbhsg_pipe_disable(struct usbhsg_uep *uep) |
438 | { | |
439 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
8a2c225d | 440 | struct usbhs_pkt *pkt; |
2f98382d | 441 | |
e8d548d5 | 442 | usbhs_pipe_disable(pipe); |
2f98382d | 443 | |
2f98382d | 444 | while (1) { |
97664a20 | 445 | pkt = usbhs_pkt_pop(pipe, NULL); |
8a2c225d | 446 | if (!pkt) |
2f98382d | 447 | break; |
2f98382d KM |
448 | } |
449 | ||
2f98382d KM |
450 | return 0; |
451 | } | |
452 | ||
409ba9e7 KM |
453 | static void usbhsg_uep_init(struct usbhsg_gpriv *gpriv) |
454 | { | |
455 | int i; | |
456 | struct usbhsg_uep *uep; | |
457 | ||
458 | usbhsg_for_each_uep_with_dcp(uep, gpriv, i) | |
459 | uep->pipe = NULL; | |
460 | } | |
461 | ||
2f98382d KM |
462 | /* |
463 | * | |
464 | * usb_ep_ops | |
465 | * | |
466 | */ | |
467 | static int usbhsg_ep_enable(struct usb_ep *ep, | |
468 | const struct usb_endpoint_descriptor *desc) | |
469 | { | |
470 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
471 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
472 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); | |
473 | struct usbhs_pipe *pipe; | |
2f98382d KM |
474 | int ret = -EIO; |
475 | ||
409ba9e7 KM |
476 | /* |
477 | * if it already have pipe, | |
478 | * nothing to do | |
479 | */ | |
08e6c611 KM |
480 | if (uep->pipe) { |
481 | usbhs_pipe_clear(uep->pipe); | |
482 | usbhs_pipe_clear_sequence(uep->pipe); | |
409ba9e7 | 483 | return 0; |
08e6c611 | 484 | } |
409ba9e7 | 485 | |
f5aa889f KM |
486 | pipe = usbhs_pipe_malloc(priv, |
487 | usb_endpoint_type(desc), | |
488 | usb_endpoint_dir_in(desc)); | |
2f98382d KM |
489 | if (pipe) { |
490 | uep->pipe = pipe; | |
491 | pipe->mod_private = uep; | |
2f98382d | 492 | |
f5aa889f KM |
493 | /* set epnum / maxp */ |
494 | usbhs_pipe_config_update(pipe, | |
495 | usb_endpoint_num(desc), | |
496 | usb_endpoint_maxp(desc)); | |
497 | ||
233f519d KM |
498 | /* |
499 | * usbhs_fifo_dma_push/pop_handler try to | |
500 | * use dmaengine if possible. | |
501 | * It will use pio handler if impossible. | |
502 | */ | |
2f98382d | 503 | if (usb_endpoint_dir_in(desc)) |
6d721b29 | 504 | uep->handler = &usbhs_fifo_dma_push_handler; |
2f98382d | 505 | else |
6d721b29 | 506 | uep->handler = &usbhs_fifo_dma_pop_handler; |
2f98382d KM |
507 | |
508 | ret = 0; | |
509 | } | |
cb96632c | 510 | |
2f98382d KM |
511 | return ret; |
512 | } | |
513 | ||
514 | static int usbhsg_ep_disable(struct usb_ep *ep) | |
515 | { | |
516 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
2f98382d | 517 | |
97664a20 | 518 | return usbhsg_pipe_disable(uep); |
2f98382d KM |
519 | } |
520 | ||
521 | static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep, | |
522 | gfp_t gfp_flags) | |
523 | { | |
524 | struct usbhsg_request *ureq; | |
525 | ||
526 | ureq = kzalloc(sizeof *ureq, gfp_flags); | |
527 | if (!ureq) | |
528 | return NULL; | |
529 | ||
6acb95d4 KM |
530 | usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq)); |
531 | ||
e73a9891 KM |
532 | ureq->req.dma = DMA_ADDR_INVALID; |
533 | ||
2f98382d KM |
534 | return &ureq->req; |
535 | } | |
536 | ||
537 | static void usbhsg_ep_free_request(struct usb_ep *ep, | |
538 | struct usb_request *req) | |
539 | { | |
540 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); | |
541 | ||
6acb95d4 | 542 | WARN_ON(!list_empty(&ureq->pkt.node)); |
2f98382d KM |
543 | kfree(ureq); |
544 | } | |
545 | ||
546 | static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req, | |
547 | gfp_t gfp_flags) | |
548 | { | |
549 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
550 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
551 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); | |
552 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
2f98382d KM |
553 | |
554 | /* param check */ | |
555 | if (usbhsg_is_not_connected(gpriv) || | |
556 | unlikely(!gpriv->driver) || | |
557 | unlikely(!pipe)) | |
97664a20 | 558 | return -ESHUTDOWN; |
2f98382d | 559 | |
97664a20 | 560 | usbhsg_queue_push(uep, ureq); |
2f98382d | 561 | |
97664a20 | 562 | return 0; |
2f98382d KM |
563 | } |
564 | ||
565 | static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) | |
566 | { | |
567 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
568 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); | |
97664a20 | 569 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
2f98382d | 570 | |
97664a20 | 571 | usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq)); |
2f98382d KM |
572 | usbhsg_queue_pop(uep, ureq, -ECONNRESET); |
573 | ||
2f98382d KM |
574 | return 0; |
575 | } | |
576 | ||
577 | static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge) | |
578 | { | |
579 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); | |
580 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); | |
581 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); | |
97664a20 | 582 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
2f98382d | 583 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
2f98382d | 584 | unsigned long flags; |
2f98382d | 585 | |
97664a20 | 586 | usbhsg_pipe_disable(uep); |
2f98382d | 587 | |
97664a20 KM |
588 | dev_dbg(dev, "set halt %d (pipe %d)\n", |
589 | halt, usbhs_pipe_number(pipe)); | |
2f98382d | 590 | |
97664a20 KM |
591 | /******************** spin lock ********************/ |
592 | usbhs_lock(priv, flags); | |
2f98382d | 593 | |
97664a20 KM |
594 | if (halt) |
595 | usbhs_pipe_stall(pipe); | |
596 | else | |
597 | usbhs_pipe_disable(pipe); | |
2f98382d | 598 | |
97664a20 KM |
599 | if (halt && wedge) |
600 | usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE); | |
601 | else | |
602 | usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE); | |
2f98382d | 603 | |
97664a20 | 604 | usbhs_unlock(priv, flags); |
2f98382d KM |
605 | /******************** spin unlock ******************/ |
606 | ||
97664a20 | 607 | return 0; |
2f98382d KM |
608 | } |
609 | ||
610 | static int usbhsg_ep_set_halt(struct usb_ep *ep, int value) | |
611 | { | |
612 | return __usbhsg_ep_set_halt_wedge(ep, value, 0); | |
613 | } | |
614 | ||
615 | static int usbhsg_ep_set_wedge(struct usb_ep *ep) | |
616 | { | |
617 | return __usbhsg_ep_set_halt_wedge(ep, 1, 1); | |
618 | } | |
619 | ||
620 | static struct usb_ep_ops usbhsg_ep_ops = { | |
621 | .enable = usbhsg_ep_enable, | |
622 | .disable = usbhsg_ep_disable, | |
623 | ||
624 | .alloc_request = usbhsg_ep_alloc_request, | |
625 | .free_request = usbhsg_ep_free_request, | |
626 | ||
627 | .queue = usbhsg_ep_queue, | |
628 | .dequeue = usbhsg_ep_dequeue, | |
629 | ||
630 | .set_halt = usbhsg_ep_set_halt, | |
631 | .set_wedge = usbhsg_ep_set_wedge, | |
632 | }; | |
633 | ||
634 | /* | |
635 | * usb module start/end | |
636 | */ | |
637 | static int usbhsg_try_start(struct usbhs_priv *priv, u32 status) | |
638 | { | |
639 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
640 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
641 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
642 | struct device *dev = usbhs_priv_to_dev(priv); | |
2f98382d | 643 | unsigned long flags; |
97664a20 | 644 | int ret = 0; |
2f98382d KM |
645 | |
646 | /******************** spin lock ********************/ | |
97664a20 | 647 | usbhs_lock(priv, flags); |
2f98382d | 648 | |
2f98382d KM |
649 | usbhsg_status_set(gpriv, status); |
650 | if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && | |
651 | usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))) | |
97664a20 KM |
652 | ret = -1; /* not ready */ |
653 | ||
654 | usbhs_unlock(priv, flags); | |
655 | /******************** spin unlock ********************/ | |
656 | ||
657 | if (ret < 0) | |
658 | return 0; /* not ready is not error */ | |
2f98382d | 659 | |
97664a20 KM |
660 | /* |
661 | * enable interrupt and systems if ready | |
662 | */ | |
2f98382d KM |
663 | dev_dbg(dev, "start gadget\n"); |
664 | ||
665 | /* | |
666 | * pipe initialize and enable DCP | |
667 | */ | |
4bd04811 | 668 | usbhs_pipe_init(priv, |
e73a9891 KM |
669 | usbhsg_queue_done, |
670 | usbhsg_dma_map_ctrl); | |
dad67397 | 671 | usbhs_fifo_init(priv); |
409ba9e7 | 672 | usbhsg_uep_init(gpriv); |
97664a20 KM |
673 | |
674 | /* dcp init */ | |
675 | dcp->pipe = usbhs_dcp_malloc(priv); | |
676 | dcp->pipe->mod_private = dcp; | |
f5aa889f | 677 | usbhs_pipe_config_update(dcp->pipe, 0, 64); |
2f98382d KM |
678 | |
679 | /* | |
680 | * system config enble | |
681 | * - HI speed | |
682 | * - function | |
683 | * - usb module | |
684 | */ | |
685 | usbhs_sys_hispeed_ctrl(priv, 1); | |
686 | usbhs_sys_function_ctrl(priv, 1); | |
687 | usbhs_sys_usb_ctrl(priv, 1); | |
688 | ||
689 | /* | |
690 | * enable irq callback | |
691 | */ | |
692 | mod->irq_dev_state = usbhsg_irq_dev_state; | |
693 | mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage; | |
2f98382d KM |
694 | usbhs_irq_callback_update(priv, mod); |
695 | ||
2f98382d KM |
696 | return 0; |
697 | } | |
698 | ||
699 | static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status) | |
700 | { | |
701 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
702 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
703 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); | |
704 | struct device *dev = usbhs_priv_to_dev(priv); | |
2f98382d | 705 | unsigned long flags; |
97664a20 | 706 | int ret = 0; |
2f98382d KM |
707 | |
708 | /******************** spin lock ********************/ | |
97664a20 | 709 | usbhs_lock(priv, flags); |
2f98382d | 710 | |
2f98382d KM |
711 | usbhsg_status_clr(gpriv, status); |
712 | if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && | |
713 | !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)) | |
97664a20 KM |
714 | ret = -1; /* already done */ |
715 | ||
716 | usbhs_unlock(priv, flags); | |
717 | /******************** spin unlock ********************/ | |
718 | ||
719 | if (ret < 0) | |
720 | return 0; /* already done is not error */ | |
2f98382d | 721 | |
97664a20 KM |
722 | /* |
723 | * disable interrupt and systems if 1st try | |
724 | */ | |
dad67397 KM |
725 | usbhs_fifo_quit(priv); |
726 | ||
2f98382d KM |
727 | /* disable all irq */ |
728 | mod->irq_dev_state = NULL; | |
729 | mod->irq_ctrl_stage = NULL; | |
2f98382d KM |
730 | usbhs_irq_callback_update(priv, mod); |
731 | ||
2f98382d KM |
732 | gpriv->gadget.speed = USB_SPEED_UNKNOWN; |
733 | ||
734 | /* disable sys */ | |
735 | usbhs_sys_hispeed_ctrl(priv, 0); | |
736 | usbhs_sys_function_ctrl(priv, 0); | |
737 | usbhs_sys_usb_ctrl(priv, 0); | |
738 | ||
97664a20 | 739 | usbhsg_pipe_disable(dcp); |
2f98382d | 740 | |
2f98382d KM |
741 | dev_dbg(dev, "stop gadget\n"); |
742 | ||
2f98382d KM |
743 | return 0; |
744 | } | |
745 | ||
746 | /* | |
747 | * | |
748 | * linux usb function | |
749 | * | |
750 | */ | |
af1d7056 FB |
751 | static int usbhsg_gadget_start(struct usb_gadget *gadget, |
752 | struct usb_gadget_driver *driver) | |
2f98382d | 753 | { |
af1d7056 | 754 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
2f98382d KM |
755 | struct usbhs_priv *priv; |
756 | struct device *dev; | |
757 | int ret; | |
758 | ||
af1d7056 | 759 | if (!driver || |
2f98382d KM |
760 | !driver->setup || |
761 | driver->speed != USB_SPEED_HIGH) | |
762 | return -EINVAL; | |
3b872188 | 763 | |
2f98382d KM |
764 | dev = usbhsg_gpriv_to_dev(gpriv); |
765 | priv = usbhsg_gpriv_to_priv(gpriv); | |
766 | ||
767 | /* first hook up the driver ... */ | |
768 | gpriv->driver = driver; | |
769 | gpriv->gadget.dev.driver = &driver->driver; | |
770 | ||
771 | ret = device_add(&gpriv->gadget.dev); | |
772 | if (ret) { | |
773 | dev_err(dev, "device_add error %d\n", ret); | |
774 | goto add_fail; | |
775 | } | |
776 | ||
2f98382d KM |
777 | return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD); |
778 | ||
2f98382d KM |
779 | add_fail: |
780 | gpriv->driver = NULL; | |
781 | gpriv->gadget.dev.driver = NULL; | |
782 | ||
783 | return ret; | |
784 | } | |
2f98382d | 785 | |
af1d7056 FB |
786 | static int usbhsg_gadget_stop(struct usb_gadget *gadget, |
787 | struct usb_gadget_driver *driver) | |
2f98382d | 788 | { |
af1d7056 | 789 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
2f98382d | 790 | struct usbhs_priv *priv; |
3b872188 | 791 | struct device *dev; |
2f98382d KM |
792 | |
793 | if (!driver || | |
3b872188 | 794 | !driver->unbind) |
2f98382d KM |
795 | return -EINVAL; |
796 | ||
797 | dev = usbhsg_gpriv_to_dev(gpriv); | |
798 | priv = usbhsg_gpriv_to_priv(gpriv); | |
799 | ||
800 | usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD); | |
801 | device_del(&gpriv->gadget.dev); | |
802 | gpriv->driver = NULL; | |
803 | ||
2f98382d KM |
804 | return 0; |
805 | } | |
2f98382d KM |
806 | |
807 | /* | |
808 | * usb gadget ops | |
809 | */ | |
810 | static int usbhsg_get_frame(struct usb_gadget *gadget) | |
811 | { | |
812 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); | |
813 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); | |
814 | ||
815 | return usbhs_frame_get_num(priv); | |
816 | } | |
817 | ||
818 | static struct usb_gadget_ops usbhsg_gadget_ops = { | |
819 | .get_frame = usbhsg_get_frame, | |
af1d7056 FB |
820 | .udc_start = usbhsg_gadget_start, |
821 | .udc_stop = usbhsg_gadget_stop, | |
2f98382d KM |
822 | }; |
823 | ||
824 | static int usbhsg_start(struct usbhs_priv *priv) | |
825 | { | |
826 | return usbhsg_try_start(priv, USBHSG_STATUS_STARTED); | |
827 | } | |
828 | ||
829 | static int usbhsg_stop(struct usbhs_priv *priv) | |
830 | { | |
831 | return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED); | |
832 | } | |
833 | ||
834 | int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv) | |
835 | { | |
836 | struct usbhsg_gpriv *gpriv; | |
837 | struct usbhsg_uep *uep; | |
838 | struct device *dev = usbhs_priv_to_dev(priv); | |
839 | int pipe_size = usbhs_get_dparam(priv, pipe_size); | |
840 | int i; | |
0f91349b | 841 | int ret; |
2f98382d KM |
842 | |
843 | gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL); | |
844 | if (!gpriv) { | |
845 | dev_err(dev, "Could not allocate gadget priv\n"); | |
846 | return -ENOMEM; | |
847 | } | |
848 | ||
849 | uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL); | |
850 | if (!uep) { | |
851 | dev_err(dev, "Could not allocate ep\n"); | |
0f91349b | 852 | ret = -ENOMEM; |
2f98382d KM |
853 | goto usbhs_mod_gadget_probe_err_gpriv; |
854 | } | |
855 | ||
856 | /* | |
857 | * CAUTION | |
858 | * | |
859 | * There is no guarantee that it is possible to access usb module here. | |
860 | * Don't accesses to it. | |
861 | * The accesse will be enable after "usbhsg_start" | |
862 | */ | |
863 | ||
864 | /* | |
865 | * register itself | |
866 | */ | |
867 | usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET); | |
868 | ||
869 | /* init gpriv */ | |
870 | gpriv->mod.name = "gadget"; | |
871 | gpriv->mod.start = usbhsg_start; | |
872 | gpriv->mod.stop = usbhsg_stop; | |
873 | gpriv->uep = uep; | |
874 | gpriv->uep_size = pipe_size; | |
875 | usbhsg_status_init(gpriv); | |
876 | ||
877 | /* | |
878 | * init gadget | |
879 | */ | |
880 | device_initialize(&gpriv->gadget.dev); | |
881 | dev_set_name(&gpriv->gadget.dev, "gadget"); | |
882 | gpriv->gadget.dev.parent = dev; | |
883 | gpriv->gadget.name = "renesas_usbhs_udc"; | |
884 | gpriv->gadget.ops = &usbhsg_gadget_ops; | |
885 | gpriv->gadget.is_dualspeed = 1; | |
886 | ||
887 | INIT_LIST_HEAD(&gpriv->gadget.ep_list); | |
888 | ||
889 | /* | |
890 | * init usb_ep | |
891 | */ | |
892 | usbhsg_for_each_uep_with_dcp(uep, gpriv, i) { | |
893 | uep->gpriv = gpriv; | |
894 | snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i); | |
895 | ||
896 | uep->ep.name = uep->ep_name; | |
897 | uep->ep.ops = &usbhsg_ep_ops; | |
898 | INIT_LIST_HEAD(&uep->ep.ep_list); | |
2f98382d KM |
899 | |
900 | /* init DCP */ | |
901 | if (usbhsg_is_dcp(uep)) { | |
902 | gpriv->gadget.ep0 = &uep->ep; | |
903 | uep->ep.maxpacket = 64; | |
904 | } | |
905 | /* init normal pipe */ | |
906 | else { | |
907 | uep->ep.maxpacket = 512; | |
908 | list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list); | |
909 | } | |
910 | } | |
911 | ||
3b872188 | 912 | usbhsg_controller_register(gpriv); |
2f98382d | 913 | |
0f91349b SAS |
914 | ret = usb_add_gadget_udc(dev, &gpriv->gadget); |
915 | if (ret) | |
916 | goto err_add_udc; | |
917 | ||
918 | ||
2f98382d KM |
919 | dev_info(dev, "gadget probed\n"); |
920 | ||
921 | return 0; | |
0f91349b SAS |
922 | err_add_udc: |
923 | kfree(gpriv->uep); | |
2f98382d KM |
924 | |
925 | usbhs_mod_gadget_probe_err_gpriv: | |
926 | kfree(gpriv); | |
927 | ||
0f91349b | 928 | return ret; |
2f98382d KM |
929 | } |
930 | ||
931 | void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv) | |
932 | { | |
933 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); | |
934 | ||
0f91349b | 935 | usb_del_gadget_udc(&gpriv->gadget); |
3b872188 KM |
936 | |
937 | usbhsg_controller_unregister(gpriv); | |
938 | ||
3af51ac9 | 939 | kfree(gpriv->uep); |
2f98382d KM |
940 | kfree(gpriv); |
941 | } |