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3948f0e0 LY |
1 | /* |
2 | * driver/usb/gadget/fsl_qe_udc.c | |
3 | * | |
4 | * Copyright (c) 2006-2008 Freescale Semiconductor, Inc. All rights reserved. | |
5 | * | |
6 | * Xie Xiaobo <X.Xie@freescale.com> | |
7 | * Li Yang <leoli@freescale.com> | |
8 | * Based on bareboard code from Shlomi Gridish. | |
9 | * | |
10 | * Description: | |
11 | * Freescle QE/CPM USB Pheripheral Controller Driver | |
12 | * The controller can be found on MPC8360, MPC8272, and etc. | |
13 | * MPC8360 Rev 1.1 may need QE mircocode update | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify it | |
16 | * under the terms of the GNU General Public License as published by the | |
17 | * Free Software Foundation; either version 2 of the License, or (at your | |
18 | * option) any later version. | |
19 | */ | |
20 | ||
21 | #undef USB_TRACE | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/kernel.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/ioport.h> | |
27 | #include <linux/types.h> | |
28 | #include <linux/errno.h> | |
cd40c4c4 | 29 | #include <linux/err.h> |
3948f0e0 LY |
30 | #include <linux/slab.h> |
31 | #include <linux/list.h> | |
32 | #include <linux/interrupt.h> | |
33 | #include <linux/io.h> | |
34 | #include <linux/moduleparam.h> | |
22ae782f | 35 | #include <linux/of_address.h> |
3948f0e0 LY |
36 | #include <linux/of_platform.h> |
37 | #include <linux/dma-mapping.h> | |
38 | #include <linux/usb/ch9.h> | |
39 | #include <linux/usb/gadget.h> | |
40 | #include <linux/usb/otg.h> | |
41 | #include <asm/qe.h> | |
42 | #include <asm/cpm.h> | |
43 | #include <asm/dma.h> | |
44 | #include <asm/reg.h> | |
45 | #include "fsl_qe_udc.h" | |
46 | ||
47 | #define DRIVER_DESC "Freescale QE/CPM USB Device Controller driver" | |
48 | #define DRIVER_AUTHOR "Xie XiaoBo" | |
49 | #define DRIVER_VERSION "1.0" | |
50 | ||
51 | #define DMA_ADDR_INVALID (~(dma_addr_t)0) | |
52 | ||
53 | static const char driver_name[] = "fsl_qe_udc"; | |
54 | static const char driver_desc[] = DRIVER_DESC; | |
55 | ||
56 | /*ep name is important in gadget, it should obey the convention of ep_match()*/ | |
57 | static const char *const ep_name[] = { | |
58 | "ep0-control", /* everyone has ep0 */ | |
59 | /* 3 configurable endpoints */ | |
60 | "ep1", | |
61 | "ep2", | |
62 | "ep3", | |
63 | }; | |
64 | ||
65 | static struct usb_endpoint_descriptor qe_ep0_desc = { | |
66 | .bLength = USB_DT_ENDPOINT_SIZE, | |
67 | .bDescriptorType = USB_DT_ENDPOINT, | |
68 | ||
69 | .bEndpointAddress = 0, | |
70 | .bmAttributes = USB_ENDPOINT_XFER_CONTROL, | |
71 | .wMaxPacketSize = USB_MAX_CTRL_PAYLOAD, | |
72 | }; | |
73 | ||
74 | /* it is initialized in probe() */ | |
75 | static struct qe_udc *udc_controller; | |
76 | ||
77 | /******************************************************************** | |
78 | * Internal Used Function Start | |
79 | ********************************************************************/ | |
80 | /*----------------------------------------------------------------- | |
81 | * done() - retire a request; caller blocked irqs | |
82 | *--------------------------------------------------------------*/ | |
83 | static void done(struct qe_ep *ep, struct qe_req *req, int status) | |
84 | { | |
85 | struct qe_udc *udc = ep->udc; | |
86 | unsigned char stopped = ep->stopped; | |
87 | ||
88 | /* the req->queue pointer is used by ep_queue() func, in which | |
89 | * the request will be added into a udc_ep->queue 'd tail | |
90 | * so here the req will be dropped from the ep->queue | |
91 | */ | |
92 | list_del_init(&req->queue); | |
93 | ||
94 | /* req.status should be set as -EINPROGRESS in ep_queue() */ | |
95 | if (req->req.status == -EINPROGRESS) | |
96 | req->req.status = status; | |
97 | else | |
98 | status = req->req.status; | |
99 | ||
100 | if (req->mapped) { | |
101 | dma_unmap_single(udc->gadget.dev.parent, | |
102 | req->req.dma, req->req.length, | |
103 | ep_is_in(ep) | |
104 | ? DMA_TO_DEVICE | |
105 | : DMA_FROM_DEVICE); | |
106 | req->req.dma = DMA_ADDR_INVALID; | |
107 | req->mapped = 0; | |
108 | } else | |
109 | dma_sync_single_for_cpu(udc->gadget.dev.parent, | |
110 | req->req.dma, req->req.length, | |
111 | ep_is_in(ep) | |
112 | ? DMA_TO_DEVICE | |
113 | : DMA_FROM_DEVICE); | |
114 | ||
115 | if (status && (status != -ESHUTDOWN)) | |
116 | dev_vdbg(udc->dev, "complete %s req %p stat %d len %u/%u\n", | |
117 | ep->ep.name, &req->req, status, | |
118 | req->req.actual, req->req.length); | |
119 | ||
120 | /* don't modify queue heads during completion callback */ | |
121 | ep->stopped = 1; | |
122 | spin_unlock(&udc->lock); | |
123 | ||
124 | /* this complete() should a func implemented by gadget layer, | |
125 | * eg fsg->bulk_in_complete() */ | |
126 | if (req->req.complete) | |
127 | req->req.complete(&ep->ep, &req->req); | |
128 | ||
129 | spin_lock(&udc->lock); | |
130 | ||
131 | ep->stopped = stopped; | |
132 | } | |
133 | ||
134 | /*----------------------------------------------------------------- | |
135 | * nuke(): delete all requests related to this ep | |
136 | *--------------------------------------------------------------*/ | |
137 | static void nuke(struct qe_ep *ep, int status) | |
138 | { | |
139 | /* Whether this eq has request linked */ | |
140 | while (!list_empty(&ep->queue)) { | |
141 | struct qe_req *req = NULL; | |
142 | req = list_entry(ep->queue.next, struct qe_req, queue); | |
143 | ||
144 | done(ep, req, status); | |
145 | } | |
146 | } | |
147 | ||
148 | /*---------------------------------------------------------------------------* | |
149 | * USB and Endpoint manipulate process, include parameter and register * | |
150 | *---------------------------------------------------------------------------*/ | |
151 | /* @value: 1--set stall 0--clean stall */ | |
152 | static int qe_eprx_stall_change(struct qe_ep *ep, int value) | |
153 | { | |
154 | u16 tem_usep; | |
155 | u8 epnum = ep->epnum; | |
156 | struct qe_udc *udc = ep->udc; | |
157 | ||
158 | tem_usep = in_be16(&udc->usb_regs->usb_usep[epnum]); | |
159 | tem_usep = tem_usep & ~USB_RHS_MASK; | |
160 | if (value == 1) | |
161 | tem_usep |= USB_RHS_STALL; | |
162 | else if (ep->dir == USB_DIR_IN) | |
163 | tem_usep |= USB_RHS_IGNORE_OUT; | |
164 | ||
165 | out_be16(&udc->usb_regs->usb_usep[epnum], tem_usep); | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static int qe_eptx_stall_change(struct qe_ep *ep, int value) | |
170 | { | |
171 | u16 tem_usep; | |
172 | u8 epnum = ep->epnum; | |
173 | struct qe_udc *udc = ep->udc; | |
174 | ||
175 | tem_usep = in_be16(&udc->usb_regs->usb_usep[epnum]); | |
176 | tem_usep = tem_usep & ~USB_THS_MASK; | |
177 | if (value == 1) | |
178 | tem_usep |= USB_THS_STALL; | |
179 | else if (ep->dir == USB_DIR_OUT) | |
180 | tem_usep |= USB_THS_IGNORE_IN; | |
181 | ||
182 | out_be16(&udc->usb_regs->usb_usep[epnum], tem_usep); | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | static int qe_ep0_stall(struct qe_udc *udc) | |
188 | { | |
189 | qe_eptx_stall_change(&udc->eps[0], 1); | |
190 | qe_eprx_stall_change(&udc->eps[0], 1); | |
191 | udc_controller->ep0_state = WAIT_FOR_SETUP; | |
192 | udc_controller->ep0_dir = 0; | |
193 | return 0; | |
194 | } | |
195 | ||
196 | static int qe_eprx_nack(struct qe_ep *ep) | |
197 | { | |
198 | u8 epnum = ep->epnum; | |
199 | struct qe_udc *udc = ep->udc; | |
200 | ||
201 | if (ep->state == EP_STATE_IDLE) { | |
202 | /* Set the ep's nack */ | |
203 | clrsetbits_be16(&udc->usb_regs->usb_usep[epnum], | |
204 | USB_RHS_MASK, USB_RHS_NACK); | |
205 | ||
206 | /* Mask Rx and Busy interrupts */ | |
207 | clrbits16(&udc->usb_regs->usb_usbmr, | |
208 | (USB_E_RXB_MASK | USB_E_BSY_MASK)); | |
209 | ||
210 | ep->state = EP_STATE_NACK; | |
211 | } | |
212 | return 0; | |
213 | } | |
214 | ||
215 | static int qe_eprx_normal(struct qe_ep *ep) | |
216 | { | |
217 | struct qe_udc *udc = ep->udc; | |
218 | ||
219 | if (ep->state == EP_STATE_NACK) { | |
220 | clrsetbits_be16(&udc->usb_regs->usb_usep[ep->epnum], | |
221 | USB_RTHS_MASK, USB_THS_IGNORE_IN); | |
222 | ||
223 | /* Unmask RX interrupts */ | |
224 | out_be16(&udc->usb_regs->usb_usber, | |
225 | USB_E_BSY_MASK | USB_E_RXB_MASK); | |
226 | setbits16(&udc->usb_regs->usb_usbmr, | |
227 | (USB_E_RXB_MASK | USB_E_BSY_MASK)); | |
228 | ||
229 | ep->state = EP_STATE_IDLE; | |
230 | ep->has_data = 0; | |
231 | } | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
236 | static int qe_ep_cmd_stoptx(struct qe_ep *ep) | |
237 | { | |
238 | if (ep->udc->soc_type == PORT_CPM) | |
239 | cpm_command(CPM_USB_STOP_TX | (ep->epnum << CPM_USB_EP_SHIFT), | |
240 | CPM_USB_STOP_TX_OPCODE); | |
241 | else | |
242 | qe_issue_cmd(QE_USB_STOP_TX, QE_CR_SUBBLOCK_USB, | |
243 | ep->epnum, 0); | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
248 | static int qe_ep_cmd_restarttx(struct qe_ep *ep) | |
249 | { | |
250 | if (ep->udc->soc_type == PORT_CPM) | |
251 | cpm_command(CPM_USB_RESTART_TX | (ep->epnum << | |
252 | CPM_USB_EP_SHIFT), CPM_USB_RESTART_TX_OPCODE); | |
253 | else | |
254 | qe_issue_cmd(QE_USB_RESTART_TX, QE_CR_SUBBLOCK_USB, | |
255 | ep->epnum, 0); | |
256 | ||
257 | return 0; | |
258 | } | |
259 | ||
260 | static int qe_ep_flushtxfifo(struct qe_ep *ep) | |
261 | { | |
262 | struct qe_udc *udc = ep->udc; | |
263 | int i; | |
264 | ||
265 | i = (int)ep->epnum; | |
266 | ||
267 | qe_ep_cmd_stoptx(ep); | |
268 | out_8(&udc->usb_regs->usb_uscom, | |
269 | USB_CMD_FLUSH_FIFO | (USB_CMD_EP_MASK & (ep->epnum))); | |
270 | out_be16(&udc->ep_param[i]->tbptr, in_be16(&udc->ep_param[i]->tbase)); | |
271 | out_be32(&udc->ep_param[i]->tstate, 0); | |
272 | out_be16(&udc->ep_param[i]->tbcnt, 0); | |
273 | ||
274 | ep->c_txbd = ep->txbase; | |
275 | ep->n_txbd = ep->txbase; | |
276 | qe_ep_cmd_restarttx(ep); | |
277 | return 0; | |
278 | } | |
279 | ||
280 | static int qe_ep_filltxfifo(struct qe_ep *ep) | |
281 | { | |
282 | struct qe_udc *udc = ep->udc; | |
283 | ||
284 | out_8(&udc->usb_regs->usb_uscom, | |
285 | USB_CMD_STR_FIFO | (USB_CMD_EP_MASK & (ep->epnum))); | |
286 | return 0; | |
287 | } | |
288 | ||
289 | static int qe_epbds_reset(struct qe_udc *udc, int pipe_num) | |
290 | { | |
291 | struct qe_ep *ep; | |
292 | u32 bdring_len; | |
293 | struct qe_bd __iomem *bd; | |
294 | int i; | |
295 | ||
296 | ep = &udc->eps[pipe_num]; | |
297 | ||
298 | if (ep->dir == USB_DIR_OUT) | |
299 | bdring_len = USB_BDRING_LEN_RX; | |
300 | else | |
301 | bdring_len = USB_BDRING_LEN; | |
302 | ||
303 | bd = ep->rxbase; | |
304 | for (i = 0; i < (bdring_len - 1); i++) { | |
305 | out_be32((u32 __iomem *)bd, R_E | R_I); | |
306 | bd++; | |
307 | } | |
308 | out_be32((u32 __iomem *)bd, R_E | R_I | R_W); | |
309 | ||
310 | bd = ep->txbase; | |
311 | for (i = 0; i < USB_BDRING_LEN_TX - 1; i++) { | |
312 | out_be32(&bd->buf, 0); | |
313 | out_be32((u32 __iomem *)bd, 0); | |
314 | bd++; | |
315 | } | |
316 | out_be32((u32 __iomem *)bd, T_W); | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | static int qe_ep_reset(struct qe_udc *udc, int pipe_num) | |
322 | { | |
323 | struct qe_ep *ep; | |
324 | u16 tmpusep; | |
325 | ||
326 | ep = &udc->eps[pipe_num]; | |
327 | tmpusep = in_be16(&udc->usb_regs->usb_usep[pipe_num]); | |
328 | tmpusep &= ~USB_RTHS_MASK; | |
329 | ||
330 | switch (ep->dir) { | |
331 | case USB_DIR_BOTH: | |
332 | qe_ep_flushtxfifo(ep); | |
333 | break; | |
334 | case USB_DIR_OUT: | |
335 | tmpusep |= USB_THS_IGNORE_IN; | |
336 | break; | |
337 | case USB_DIR_IN: | |
338 | qe_ep_flushtxfifo(ep); | |
339 | tmpusep |= USB_RHS_IGNORE_OUT; | |
340 | break; | |
341 | default: | |
342 | break; | |
343 | } | |
344 | out_be16(&udc->usb_regs->usb_usep[pipe_num], tmpusep); | |
345 | ||
346 | qe_epbds_reset(udc, pipe_num); | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | static int qe_ep_toggledata01(struct qe_ep *ep) | |
352 | { | |
353 | ep->data01 ^= 0x1; | |
354 | return 0; | |
355 | } | |
356 | ||
357 | static int qe_ep_bd_init(struct qe_udc *udc, unsigned char pipe_num) | |
358 | { | |
359 | struct qe_ep *ep = &udc->eps[pipe_num]; | |
360 | unsigned long tmp_addr = 0; | |
361 | struct usb_ep_para __iomem *epparam; | |
362 | int i; | |
363 | struct qe_bd __iomem *bd; | |
364 | int bdring_len; | |
365 | ||
366 | if (ep->dir == USB_DIR_OUT) | |
367 | bdring_len = USB_BDRING_LEN_RX; | |
368 | else | |
369 | bdring_len = USB_BDRING_LEN; | |
370 | ||
371 | epparam = udc->ep_param[pipe_num]; | |
372 | /* alloc multi-ram for BD rings and set the ep parameters */ | |
373 | tmp_addr = cpm_muram_alloc(sizeof(struct qe_bd) * (bdring_len + | |
374 | USB_BDRING_LEN_TX), QE_ALIGNMENT_OF_BD); | |
cd40c4c4 AV |
375 | if (IS_ERR_VALUE(tmp_addr)) |
376 | return -ENOMEM; | |
377 | ||
3948f0e0 LY |
378 | out_be16(&epparam->rbase, (u16)tmp_addr); |
379 | out_be16(&epparam->tbase, (u16)(tmp_addr + | |
380 | (sizeof(struct qe_bd) * bdring_len))); | |
381 | ||
382 | out_be16(&epparam->rbptr, in_be16(&epparam->rbase)); | |
383 | out_be16(&epparam->tbptr, in_be16(&epparam->tbase)); | |
384 | ||
385 | ep->rxbase = cpm_muram_addr(tmp_addr); | |
386 | ep->txbase = cpm_muram_addr(tmp_addr + (sizeof(struct qe_bd) | |
387 | * bdring_len)); | |
388 | ep->n_rxbd = ep->rxbase; | |
389 | ep->e_rxbd = ep->rxbase; | |
390 | ep->n_txbd = ep->txbase; | |
391 | ep->c_txbd = ep->txbase; | |
392 | ep->data01 = 0; /* data0 */ | |
393 | ||
394 | /* Init TX and RX bds */ | |
395 | bd = ep->rxbase; | |
396 | for (i = 0; i < bdring_len - 1; i++) { | |
397 | out_be32(&bd->buf, 0); | |
398 | out_be32((u32 __iomem *)bd, 0); | |
399 | bd++; | |
400 | } | |
401 | out_be32(&bd->buf, 0); | |
402 | out_be32((u32 __iomem *)bd, R_W); | |
403 | ||
404 | bd = ep->txbase; | |
405 | for (i = 0; i < USB_BDRING_LEN_TX - 1; i++) { | |
406 | out_be32(&bd->buf, 0); | |
407 | out_be32((u32 __iomem *)bd, 0); | |
408 | bd++; | |
409 | } | |
410 | out_be32(&bd->buf, 0); | |
411 | out_be32((u32 __iomem *)bd, T_W); | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | static int qe_ep_rxbd_update(struct qe_ep *ep) | |
417 | { | |
418 | unsigned int size; | |
419 | int i; | |
420 | unsigned int tmp; | |
421 | struct qe_bd __iomem *bd; | |
422 | unsigned int bdring_len; | |
423 | ||
424 | if (ep->rxbase == NULL) | |
425 | return -EINVAL; | |
426 | ||
427 | bd = ep->rxbase; | |
428 | ||
429 | ep->rxframe = kmalloc(sizeof(*ep->rxframe), GFP_ATOMIC); | |
430 | if (ep->rxframe == NULL) { | |
431 | dev_err(ep->udc->dev, "malloc rxframe failed\n"); | |
432 | return -ENOMEM; | |
433 | } | |
434 | ||
435 | qe_frame_init(ep->rxframe); | |
436 | ||
437 | if (ep->dir == USB_DIR_OUT) | |
438 | bdring_len = USB_BDRING_LEN_RX; | |
439 | else | |
440 | bdring_len = USB_BDRING_LEN; | |
441 | ||
442 | size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (bdring_len + 1); | |
443 | ep->rxbuffer = kzalloc(size, GFP_ATOMIC); | |
444 | if (ep->rxbuffer == NULL) { | |
445 | dev_err(ep->udc->dev, "malloc rxbuffer failed,size=%d\n", | |
446 | size); | |
447 | kfree(ep->rxframe); | |
448 | return -ENOMEM; | |
449 | } | |
450 | ||
451 | ep->rxbuf_d = virt_to_phys((void *)ep->rxbuffer); | |
452 | if (ep->rxbuf_d == DMA_ADDR_INVALID) { | |
453 | ep->rxbuf_d = dma_map_single(udc_controller->gadget.dev.parent, | |
454 | ep->rxbuffer, | |
455 | size, | |
456 | DMA_FROM_DEVICE); | |
457 | ep->rxbufmap = 1; | |
458 | } else { | |
459 | dma_sync_single_for_device(udc_controller->gadget.dev.parent, | |
460 | ep->rxbuf_d, size, | |
461 | DMA_FROM_DEVICE); | |
462 | ep->rxbufmap = 0; | |
463 | } | |
464 | ||
465 | size = ep->ep.maxpacket + USB_CRC_SIZE + 2; | |
466 | tmp = ep->rxbuf_d; | |
467 | tmp = (u32)(((tmp >> 2) << 2) + 4); | |
468 | ||
469 | for (i = 0; i < bdring_len - 1; i++) { | |
470 | out_be32(&bd->buf, tmp); | |
471 | out_be32((u32 __iomem *)bd, (R_E | R_I)); | |
472 | tmp = tmp + size; | |
473 | bd++; | |
474 | } | |
475 | out_be32(&bd->buf, tmp); | |
476 | out_be32((u32 __iomem *)bd, (R_E | R_I | R_W)); | |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
481 | static int qe_ep_register_init(struct qe_udc *udc, unsigned char pipe_num) | |
482 | { | |
483 | struct qe_ep *ep = &udc->eps[pipe_num]; | |
484 | struct usb_ep_para __iomem *epparam; | |
485 | u16 usep, logepnum; | |
486 | u16 tmp; | |
487 | u8 rtfcr = 0; | |
488 | ||
489 | epparam = udc->ep_param[pipe_num]; | |
490 | ||
491 | usep = 0; | |
492 | logepnum = (ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); | |
493 | usep |= (logepnum << USB_EPNUM_SHIFT); | |
494 | ||
495 | switch (ep->desc->bmAttributes & 0x03) { | |
496 | case USB_ENDPOINT_XFER_BULK: | |
497 | usep |= USB_TRANS_BULK; | |
498 | break; | |
499 | case USB_ENDPOINT_XFER_ISOC: | |
500 | usep |= USB_TRANS_ISO; | |
501 | break; | |
502 | case USB_ENDPOINT_XFER_INT: | |
503 | usep |= USB_TRANS_INT; | |
504 | break; | |
505 | default: | |
506 | usep |= USB_TRANS_CTR; | |
507 | break; | |
508 | } | |
509 | ||
510 | switch (ep->dir) { | |
511 | case USB_DIR_OUT: | |
512 | usep |= USB_THS_IGNORE_IN; | |
513 | break; | |
514 | case USB_DIR_IN: | |
515 | usep |= USB_RHS_IGNORE_OUT; | |
516 | break; | |
517 | default: | |
518 | break; | |
519 | } | |
520 | out_be16(&udc->usb_regs->usb_usep[pipe_num], usep); | |
521 | ||
522 | rtfcr = 0x30; | |
523 | out_8(&epparam->rbmr, rtfcr); | |
524 | out_8(&epparam->tbmr, rtfcr); | |
525 | ||
526 | tmp = (u16)(ep->ep.maxpacket + USB_CRC_SIZE); | |
527 | /* MRBLR must be divisble by 4 */ | |
528 | tmp = (u16)(((tmp >> 2) << 2) + 4); | |
529 | out_be16(&epparam->mrblr, tmp); | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
534 | static int qe_ep_init(struct qe_udc *udc, | |
535 | unsigned char pipe_num, | |
536 | const struct usb_endpoint_descriptor *desc) | |
537 | { | |
538 | struct qe_ep *ep = &udc->eps[pipe_num]; | |
539 | unsigned long flags; | |
540 | int reval = 0; | |
541 | u16 max = 0; | |
542 | ||
543 | max = le16_to_cpu(desc->wMaxPacketSize); | |
544 | ||
545 | /* check the max package size validate for this endpoint */ | |
546 | /* Refer to USB2.0 spec table 9-13, | |
547 | */ | |
548 | if (pipe_num != 0) { | |
549 | switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { | |
550 | case USB_ENDPOINT_XFER_BULK: | |
551 | if (strstr(ep->ep.name, "-iso") | |
552 | || strstr(ep->ep.name, "-int")) | |
553 | goto en_done; | |
554 | switch (udc->gadget.speed) { | |
555 | case USB_SPEED_HIGH: | |
556 | if ((max == 128) || (max == 256) || (max == 512)) | |
557 | break; | |
558 | default: | |
559 | switch (max) { | |
560 | case 4: | |
561 | case 8: | |
562 | case 16: | |
563 | case 32: | |
564 | case 64: | |
565 | break; | |
566 | default: | |
567 | case USB_SPEED_LOW: | |
568 | goto en_done; | |
569 | } | |
570 | } | |
571 | break; | |
572 | case USB_ENDPOINT_XFER_INT: | |
573 | if (strstr(ep->ep.name, "-iso")) /* bulk is ok */ | |
574 | goto en_done; | |
575 | switch (udc->gadget.speed) { | |
576 | case USB_SPEED_HIGH: | |
577 | if (max <= 1024) | |
578 | break; | |
579 | case USB_SPEED_FULL: | |
580 | if (max <= 64) | |
581 | break; | |
582 | default: | |
583 | if (max <= 8) | |
584 | break; | |
585 | goto en_done; | |
586 | } | |
587 | break; | |
588 | case USB_ENDPOINT_XFER_ISOC: | |
589 | if (strstr(ep->ep.name, "-bulk") | |
590 | || strstr(ep->ep.name, "-int")) | |
591 | goto en_done; | |
592 | switch (udc->gadget.speed) { | |
593 | case USB_SPEED_HIGH: | |
594 | if (max <= 1024) | |
595 | break; | |
596 | case USB_SPEED_FULL: | |
597 | if (max <= 1023) | |
598 | break; | |
599 | default: | |
600 | goto en_done; | |
601 | } | |
602 | break; | |
603 | case USB_ENDPOINT_XFER_CONTROL: | |
604 | if (strstr(ep->ep.name, "-iso") | |
605 | || strstr(ep->ep.name, "-int")) | |
606 | goto en_done; | |
607 | switch (udc->gadget.speed) { | |
608 | case USB_SPEED_HIGH: | |
609 | case USB_SPEED_FULL: | |
610 | switch (max) { | |
611 | case 1: | |
612 | case 2: | |
613 | case 4: | |
614 | case 8: | |
615 | case 16: | |
616 | case 32: | |
617 | case 64: | |
618 | break; | |
619 | default: | |
620 | goto en_done; | |
621 | } | |
622 | case USB_SPEED_LOW: | |
623 | switch (max) { | |
624 | case 1: | |
625 | case 2: | |
626 | case 4: | |
627 | case 8: | |
628 | break; | |
629 | default: | |
630 | goto en_done; | |
631 | } | |
632 | default: | |
633 | goto en_done; | |
634 | } | |
635 | break; | |
636 | ||
637 | default: | |
638 | goto en_done; | |
639 | } | |
640 | } /* if ep0*/ | |
641 | ||
642 | spin_lock_irqsave(&udc->lock, flags); | |
643 | ||
644 | /* initialize ep structure */ | |
645 | ep->ep.maxpacket = max; | |
646 | ep->tm = (u8)(desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK); | |
647 | ep->desc = desc; | |
648 | ep->stopped = 0; | |
649 | ep->init = 1; | |
650 | ||
651 | if (pipe_num == 0) { | |
652 | ep->dir = USB_DIR_BOTH; | |
653 | udc->ep0_dir = USB_DIR_OUT; | |
654 | udc->ep0_state = WAIT_FOR_SETUP; | |
655 | } else { | |
656 | switch (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) { | |
657 | case USB_DIR_OUT: | |
658 | ep->dir = USB_DIR_OUT; | |
659 | break; | |
660 | case USB_DIR_IN: | |
661 | ep->dir = USB_DIR_IN; | |
662 | default: | |
663 | break; | |
664 | } | |
665 | } | |
666 | ||
667 | /* hardware special operation */ | |
668 | qe_ep_bd_init(udc, pipe_num); | |
669 | if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_OUT)) { | |
670 | reval = qe_ep_rxbd_update(ep); | |
671 | if (reval) | |
672 | goto en_done1; | |
673 | } | |
674 | ||
675 | if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_IN)) { | |
676 | ep->txframe = kmalloc(sizeof(*ep->txframe), GFP_ATOMIC); | |
677 | if (ep->txframe == NULL) { | |
678 | dev_err(udc->dev, "malloc txframe failed\n"); | |
679 | goto en_done2; | |
680 | } | |
681 | qe_frame_init(ep->txframe); | |
682 | } | |
683 | ||
684 | qe_ep_register_init(udc, pipe_num); | |
685 | ||
686 | /* Now HW will be NAKing transfers to that EP, | |
687 | * until a buffer is queued to it. */ | |
688 | spin_unlock_irqrestore(&udc->lock, flags); | |
689 | ||
690 | return 0; | |
691 | en_done2: | |
692 | kfree(ep->rxbuffer); | |
693 | kfree(ep->rxframe); | |
694 | en_done1: | |
695 | spin_unlock_irqrestore(&udc->lock, flags); | |
696 | en_done: | |
cd40c4c4 | 697 | dev_err(udc->dev, "failed to initialize %s\n", ep->ep.name); |
3948f0e0 LY |
698 | return -ENODEV; |
699 | } | |
700 | ||
701 | static inline void qe_usb_enable(void) | |
702 | { | |
703 | setbits8(&udc_controller->usb_regs->usb_usmod, USB_MODE_EN); | |
704 | } | |
705 | ||
706 | static inline void qe_usb_disable(void) | |
707 | { | |
708 | clrbits8(&udc_controller->usb_regs->usb_usmod, USB_MODE_EN); | |
709 | } | |
710 | ||
711 | /*----------------------------------------------------------------------------* | |
712 | * USB and EP basic manipulate function end * | |
713 | *----------------------------------------------------------------------------*/ | |
714 | ||
715 | ||
716 | /****************************************************************************** | |
717 | UDC transmit and receive process | |
718 | ******************************************************************************/ | |
719 | static void recycle_one_rxbd(struct qe_ep *ep) | |
720 | { | |
721 | u32 bdstatus; | |
722 | ||
723 | bdstatus = in_be32((u32 __iomem *)ep->e_rxbd); | |
724 | bdstatus = R_I | R_E | (bdstatus & R_W); | |
725 | out_be32((u32 __iomem *)ep->e_rxbd, bdstatus); | |
726 | ||
727 | if (bdstatus & R_W) | |
728 | ep->e_rxbd = ep->rxbase; | |
729 | else | |
730 | ep->e_rxbd++; | |
731 | } | |
732 | ||
733 | static void recycle_rxbds(struct qe_ep *ep, unsigned char stopatnext) | |
734 | { | |
735 | u32 bdstatus; | |
736 | struct qe_bd __iomem *bd, *nextbd; | |
737 | unsigned char stop = 0; | |
738 | ||
739 | nextbd = ep->n_rxbd; | |
740 | bd = ep->e_rxbd; | |
741 | bdstatus = in_be32((u32 __iomem *)bd); | |
742 | ||
743 | while (!(bdstatus & R_E) && !(bdstatus & BD_LENGTH_MASK) && !stop) { | |
744 | bdstatus = R_E | R_I | (bdstatus & R_W); | |
745 | out_be32((u32 __iomem *)bd, bdstatus); | |
746 | ||
747 | if (bdstatus & R_W) | |
748 | bd = ep->rxbase; | |
749 | else | |
750 | bd++; | |
751 | ||
752 | bdstatus = in_be32((u32 __iomem *)bd); | |
753 | if (stopatnext && (bd == nextbd)) | |
754 | stop = 1; | |
755 | } | |
756 | ||
757 | ep->e_rxbd = bd; | |
758 | } | |
759 | ||
760 | static void ep_recycle_rxbds(struct qe_ep *ep) | |
761 | { | |
762 | struct qe_bd __iomem *bd = ep->n_rxbd; | |
763 | u32 bdstatus; | |
764 | u8 epnum = ep->epnum; | |
765 | struct qe_udc *udc = ep->udc; | |
766 | ||
767 | bdstatus = in_be32((u32 __iomem *)bd); | |
768 | if (!(bdstatus & R_E) && !(bdstatus & BD_LENGTH_MASK)) { | |
769 | bd = ep->rxbase + | |
770 | ((in_be16(&udc->ep_param[epnum]->rbptr) - | |
771 | in_be16(&udc->ep_param[epnum]->rbase)) | |
772 | >> 3); | |
773 | bdstatus = in_be32((u32 __iomem *)bd); | |
774 | ||
775 | if (bdstatus & R_W) | |
776 | bd = ep->rxbase; | |
777 | else | |
778 | bd++; | |
779 | ||
780 | ep->e_rxbd = bd; | |
781 | recycle_rxbds(ep, 0); | |
782 | ep->e_rxbd = ep->n_rxbd; | |
783 | } else | |
784 | recycle_rxbds(ep, 1); | |
785 | ||
786 | if (in_be16(&udc->usb_regs->usb_usber) & USB_E_BSY_MASK) | |
787 | out_be16(&udc->usb_regs->usb_usber, USB_E_BSY_MASK); | |
788 | ||
789 | if (ep->has_data <= 0 && (!list_empty(&ep->queue))) | |
790 | qe_eprx_normal(ep); | |
791 | ||
792 | ep->localnack = 0; | |
793 | } | |
794 | ||
795 | static void setup_received_handle(struct qe_udc *udc, | |
796 | struct usb_ctrlrequest *setup); | |
797 | static int qe_ep_rxframe_handle(struct qe_ep *ep); | |
798 | static void ep0_req_complete(struct qe_udc *udc, struct qe_req *req); | |
799 | /* when BD PID is setup, handle the packet */ | |
800 | static int ep0_setup_handle(struct qe_udc *udc) | |
801 | { | |
802 | struct qe_ep *ep = &udc->eps[0]; | |
803 | struct qe_frame *pframe; | |
804 | unsigned int fsize; | |
805 | u8 *cp; | |
806 | ||
807 | pframe = ep->rxframe; | |
808 | if ((frame_get_info(pframe) & PID_SETUP) | |
809 | && (udc->ep0_state == WAIT_FOR_SETUP)) { | |
810 | fsize = frame_get_length(pframe); | |
811 | if (unlikely(fsize != 8)) | |
812 | return -EINVAL; | |
813 | cp = (u8 *)&udc->local_setup_buff; | |
814 | memcpy(cp, pframe->data, fsize); | |
815 | ep->data01 = 1; | |
816 | ||
817 | /* handle the usb command base on the usb_ctrlrequest */ | |
818 | setup_received_handle(udc, &udc->local_setup_buff); | |
819 | return 0; | |
820 | } | |
821 | return -EINVAL; | |
822 | } | |
823 | ||
824 | static int qe_ep0_rx(struct qe_udc *udc) | |
825 | { | |
826 | struct qe_ep *ep = &udc->eps[0]; | |
827 | struct qe_frame *pframe; | |
828 | struct qe_bd __iomem *bd; | |
829 | u32 bdstatus, length; | |
830 | u32 vaddr; | |
831 | ||
832 | pframe = ep->rxframe; | |
833 | ||
834 | if (ep->dir == USB_DIR_IN) { | |
835 | dev_err(udc->dev, "ep0 not a control endpoint\n"); | |
836 | return -EINVAL; | |
837 | } | |
838 | ||
839 | bd = ep->n_rxbd; | |
840 | bdstatus = in_be32((u32 __iomem *)bd); | |
841 | length = bdstatus & BD_LENGTH_MASK; | |
842 | ||
843 | while (!(bdstatus & R_E) && length) { | |
844 | if ((bdstatus & R_F) && (bdstatus & R_L) | |
845 | && !(bdstatus & R_ERROR)) { | |
846 | if (length == USB_CRC_SIZE) { | |
847 | udc->ep0_state = WAIT_FOR_SETUP; | |
848 | dev_vdbg(udc->dev, | |
849 | "receive a ZLP in status phase\n"); | |
850 | } else { | |
851 | qe_frame_clean(pframe); | |
852 | vaddr = (u32)phys_to_virt(in_be32(&bd->buf)); | |
853 | frame_set_data(pframe, (u8 *)vaddr); | |
854 | frame_set_length(pframe, | |
855 | (length - USB_CRC_SIZE)); | |
856 | frame_set_status(pframe, FRAME_OK); | |
857 | switch (bdstatus & R_PID) { | |
858 | case R_PID_SETUP: | |
859 | frame_set_info(pframe, PID_SETUP); | |
860 | break; | |
861 | case R_PID_DATA1: | |
862 | frame_set_info(pframe, PID_DATA1); | |
863 | break; | |
864 | default: | |
865 | frame_set_info(pframe, PID_DATA0); | |
866 | break; | |
867 | } | |
868 | ||
869 | if ((bdstatus & R_PID) == R_PID_SETUP) | |
870 | ep0_setup_handle(udc); | |
871 | else | |
872 | qe_ep_rxframe_handle(ep); | |
873 | } | |
874 | } else { | |
875 | dev_err(udc->dev, "The receive frame with error!\n"); | |
876 | } | |
877 | ||
878 | /* note: don't clear the rxbd's buffer address */ | |
879 | recycle_one_rxbd(ep); | |
880 | ||
881 | /* Get next BD */ | |
882 | if (bdstatus & R_W) | |
883 | bd = ep->rxbase; | |
884 | else | |
885 | bd++; | |
886 | ||
887 | bdstatus = in_be32((u32 __iomem *)bd); | |
888 | length = bdstatus & BD_LENGTH_MASK; | |
889 | ||
890 | } | |
891 | ||
892 | ep->n_rxbd = bd; | |
893 | ||
894 | return 0; | |
895 | } | |
896 | ||
897 | static int qe_ep_rxframe_handle(struct qe_ep *ep) | |
898 | { | |
899 | struct qe_frame *pframe; | |
900 | u8 framepid = 0; | |
901 | unsigned int fsize; | |
902 | u8 *cp; | |
903 | struct qe_req *req; | |
904 | ||
905 | pframe = ep->rxframe; | |
906 | ||
907 | if (frame_get_info(pframe) & PID_DATA1) | |
908 | framepid = 0x1; | |
909 | ||
910 | if (framepid != ep->data01) { | |
911 | dev_err(ep->udc->dev, "the data01 error!\n"); | |
912 | return -EIO; | |
913 | } | |
914 | ||
915 | fsize = frame_get_length(pframe); | |
916 | if (list_empty(&ep->queue)) { | |
917 | dev_err(ep->udc->dev, "the %s have no requeue!\n", ep->name); | |
918 | } else { | |
919 | req = list_entry(ep->queue.next, struct qe_req, queue); | |
920 | ||
921 | cp = (u8 *)(req->req.buf) + req->req.actual; | |
922 | if (cp) { | |
923 | memcpy(cp, pframe->data, fsize); | |
924 | req->req.actual += fsize; | |
925 | if ((fsize < ep->ep.maxpacket) || | |
926 | (req->req.actual >= req->req.length)) { | |
927 | if (ep->epnum == 0) | |
928 | ep0_req_complete(ep->udc, req); | |
929 | else | |
930 | done(ep, req, 0); | |
931 | if (list_empty(&ep->queue) && ep->epnum != 0) | |
932 | qe_eprx_nack(ep); | |
933 | } | |
934 | } | |
935 | } | |
936 | ||
937 | qe_ep_toggledata01(ep); | |
938 | ||
939 | return 0; | |
940 | } | |
941 | ||
942 | static void ep_rx_tasklet(unsigned long data) | |
943 | { | |
944 | struct qe_udc *udc = (struct qe_udc *)data; | |
945 | struct qe_ep *ep; | |
946 | struct qe_frame *pframe; | |
947 | struct qe_bd __iomem *bd; | |
948 | unsigned long flags; | |
949 | u32 bdstatus, length; | |
950 | u32 vaddr, i; | |
951 | ||
952 | spin_lock_irqsave(&udc->lock, flags); | |
953 | ||
954 | for (i = 1; i < USB_MAX_ENDPOINTS; i++) { | |
955 | ep = &udc->eps[i]; | |
956 | ||
957 | if (ep->dir == USB_DIR_IN || ep->enable_tasklet == 0) { | |
958 | dev_dbg(udc->dev, | |
959 | "This is a transmit ep or disable tasklet!\n"); | |
960 | continue; | |
961 | } | |
962 | ||
963 | pframe = ep->rxframe; | |
964 | bd = ep->n_rxbd; | |
965 | bdstatus = in_be32((u32 __iomem *)bd); | |
966 | length = bdstatus & BD_LENGTH_MASK; | |
967 | ||
968 | while (!(bdstatus & R_E) && length) { | |
969 | if (list_empty(&ep->queue)) { | |
970 | qe_eprx_nack(ep); | |
971 | dev_dbg(udc->dev, | |
972 | "The rxep have noreq %d\n", | |
973 | ep->has_data); | |
974 | break; | |
975 | } | |
976 | ||
977 | if ((bdstatus & R_F) && (bdstatus & R_L) | |
978 | && !(bdstatus & R_ERROR)) { | |
979 | qe_frame_clean(pframe); | |
980 | vaddr = (u32)phys_to_virt(in_be32(&bd->buf)); | |
981 | frame_set_data(pframe, (u8 *)vaddr); | |
982 | frame_set_length(pframe, | |
983 | (length - USB_CRC_SIZE)); | |
984 | frame_set_status(pframe, FRAME_OK); | |
985 | switch (bdstatus & R_PID) { | |
986 | case R_PID_DATA1: | |
987 | frame_set_info(pframe, PID_DATA1); | |
988 | break; | |
989 | case R_PID_SETUP: | |
990 | frame_set_info(pframe, PID_SETUP); | |
991 | break; | |
992 | default: | |
993 | frame_set_info(pframe, PID_DATA0); | |
994 | break; | |
995 | } | |
996 | /* handle the rx frame */ | |
997 | qe_ep_rxframe_handle(ep); | |
998 | } else { | |
999 | dev_err(udc->dev, | |
1000 | "error in received frame\n"); | |
1001 | } | |
1002 | /* note: don't clear the rxbd's buffer address */ | |
1003 | /*clear the length */ | |
1004 | out_be32((u32 __iomem *)bd, bdstatus & BD_STATUS_MASK); | |
1005 | ep->has_data--; | |
1006 | if (!(ep->localnack)) | |
1007 | recycle_one_rxbd(ep); | |
1008 | ||
1009 | /* Get next BD */ | |
1010 | if (bdstatus & R_W) | |
1011 | bd = ep->rxbase; | |
1012 | else | |
1013 | bd++; | |
1014 | ||
1015 | bdstatus = in_be32((u32 __iomem *)bd); | |
1016 | length = bdstatus & BD_LENGTH_MASK; | |
1017 | } | |
1018 | ||
1019 | ep->n_rxbd = bd; | |
1020 | ||
1021 | if (ep->localnack) | |
1022 | ep_recycle_rxbds(ep); | |
1023 | ||
1024 | ep->enable_tasklet = 0; | |
1025 | } /* for i=1 */ | |
1026 | ||
1027 | spin_unlock_irqrestore(&udc->lock, flags); | |
1028 | } | |
1029 | ||
1030 | static int qe_ep_rx(struct qe_ep *ep) | |
1031 | { | |
1032 | struct qe_udc *udc; | |
1033 | struct qe_frame *pframe; | |
1034 | struct qe_bd __iomem *bd; | |
1035 | u16 swoffs, ucoffs, emptybds; | |
1036 | ||
1037 | udc = ep->udc; | |
1038 | pframe = ep->rxframe; | |
1039 | ||
1040 | if (ep->dir == USB_DIR_IN) { | |
1041 | dev_err(udc->dev, "transmit ep in rx function\n"); | |
1042 | return -EINVAL; | |
1043 | } | |
1044 | ||
1045 | bd = ep->n_rxbd; | |
1046 | ||
1047 | swoffs = (u16)(bd - ep->rxbase); | |
1048 | ucoffs = (u16)((in_be16(&udc->ep_param[ep->epnum]->rbptr) - | |
1049 | in_be16(&udc->ep_param[ep->epnum]->rbase)) >> 3); | |
1050 | if (swoffs < ucoffs) | |
1051 | emptybds = USB_BDRING_LEN_RX - ucoffs + swoffs; | |
1052 | else | |
1053 | emptybds = swoffs - ucoffs; | |
1054 | ||
1055 | if (emptybds < MIN_EMPTY_BDS) { | |
1056 | qe_eprx_nack(ep); | |
1057 | ep->localnack = 1; | |
1058 | dev_vdbg(udc->dev, "%d empty bds, send NACK\n", emptybds); | |
1059 | } | |
1060 | ep->has_data = USB_BDRING_LEN_RX - emptybds; | |
1061 | ||
1062 | if (list_empty(&ep->queue)) { | |
1063 | qe_eprx_nack(ep); | |
1064 | dev_vdbg(udc->dev, "The rxep have no req queued with %d BDs\n", | |
1065 | ep->has_data); | |
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | tasklet_schedule(&udc->rx_tasklet); | |
1070 | ep->enable_tasklet = 1; | |
1071 | ||
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | /* send data from a frame, no matter what tx_req */ | |
1076 | static int qe_ep_tx(struct qe_ep *ep, struct qe_frame *frame) | |
1077 | { | |
1078 | struct qe_udc *udc = ep->udc; | |
1079 | struct qe_bd __iomem *bd; | |
1080 | u16 saveusbmr; | |
1081 | u32 bdstatus, pidmask; | |
1082 | u32 paddr; | |
1083 | ||
1084 | if (ep->dir == USB_DIR_OUT) { | |
1085 | dev_err(udc->dev, "receive ep passed to tx function\n"); | |
1086 | return -EINVAL; | |
1087 | } | |
1088 | ||
1089 | /* Disable the Tx interrupt */ | |
1090 | saveusbmr = in_be16(&udc->usb_regs->usb_usbmr); | |
1091 | out_be16(&udc->usb_regs->usb_usbmr, | |
1092 | saveusbmr & ~(USB_E_TXB_MASK | USB_E_TXE_MASK)); | |
1093 | ||
1094 | bd = ep->n_txbd; | |
1095 | bdstatus = in_be32((u32 __iomem *)bd); | |
1096 | ||
1097 | if (!(bdstatus & (T_R | BD_LENGTH_MASK))) { | |
1098 | if (frame_get_length(frame) == 0) { | |
1099 | frame_set_data(frame, udc->nullbuf); | |
1100 | frame_set_length(frame, 2); | |
1101 | frame->info |= (ZLP | NO_CRC); | |
1102 | dev_vdbg(udc->dev, "the frame size = 0\n"); | |
1103 | } | |
1104 | paddr = virt_to_phys((void *)frame->data); | |
1105 | out_be32(&bd->buf, paddr); | |
1106 | bdstatus = (bdstatus&T_W); | |
1107 | if (!(frame_get_info(frame) & NO_CRC)) | |
1108 | bdstatus |= T_R | T_I | T_L | T_TC | |
1109 | | frame_get_length(frame); | |
1110 | else | |
1111 | bdstatus |= T_R | T_I | T_L | frame_get_length(frame); | |
1112 | ||
1113 | /* if the packet is a ZLP in status phase */ | |
1114 | if ((ep->epnum == 0) && (udc->ep0_state == DATA_STATE_NEED_ZLP)) | |
1115 | ep->data01 = 0x1; | |
1116 | ||
1117 | if (ep->data01) { | |
1118 | pidmask = T_PID_DATA1; | |
1119 | frame->info |= PID_DATA1; | |
1120 | } else { | |
1121 | pidmask = T_PID_DATA0; | |
1122 | frame->info |= PID_DATA0; | |
1123 | } | |
1124 | bdstatus |= T_CNF; | |
1125 | bdstatus |= pidmask; | |
1126 | out_be32((u32 __iomem *)bd, bdstatus); | |
1127 | qe_ep_filltxfifo(ep); | |
1128 | ||
1129 | /* enable the TX interrupt */ | |
1130 | out_be16(&udc->usb_regs->usb_usbmr, saveusbmr); | |
1131 | ||
1132 | qe_ep_toggledata01(ep); | |
1133 | if (bdstatus & T_W) | |
1134 | ep->n_txbd = ep->txbase; | |
1135 | else | |
1136 | ep->n_txbd++; | |
1137 | ||
1138 | return 0; | |
1139 | } else { | |
1140 | out_be16(&udc->usb_regs->usb_usbmr, saveusbmr); | |
1141 | dev_vdbg(udc->dev, "The tx bd is not ready!\n"); | |
1142 | return -EBUSY; | |
1143 | } | |
1144 | } | |
1145 | ||
928dfa6c | 1146 | /* when a bd was transmitted, the function can |
3948f0e0 LY |
1147 | * handle the tx_req, not include ep0 */ |
1148 | static int txcomplete(struct qe_ep *ep, unsigned char restart) | |
1149 | { | |
1150 | if (ep->tx_req != NULL) { | |
1151 | if (!restart) { | |
1152 | int asent = ep->last; | |
1153 | ep->sent += asent; | |
1154 | ep->last -= asent; | |
1155 | } else { | |
1156 | ep->last = 0; | |
1157 | } | |
1158 | ||
1159 | /* a request already were transmitted completely */ | |
1160 | if ((ep->tx_req->req.length - ep->sent) <= 0) { | |
1161 | ep->tx_req->req.actual = (unsigned int)ep->sent; | |
1162 | done(ep, ep->tx_req, 0); | |
1163 | ep->tx_req = NULL; | |
1164 | ep->last = 0; | |
1165 | ep->sent = 0; | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | /* we should gain a new tx_req fot this endpoint */ | |
1170 | if (ep->tx_req == NULL) { | |
1171 | if (!list_empty(&ep->queue)) { | |
1172 | ep->tx_req = list_entry(ep->queue.next, struct qe_req, | |
1173 | queue); | |
1174 | ep->last = 0; | |
1175 | ep->sent = 0; | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | return 0; | |
1180 | } | |
1181 | ||
928dfa6c | 1182 | /* give a frame and a tx_req, send some data */ |
3948f0e0 LY |
1183 | static int qe_usb_senddata(struct qe_ep *ep, struct qe_frame *frame) |
1184 | { | |
1185 | unsigned int size; | |
1186 | u8 *buf; | |
1187 | ||
1188 | qe_frame_clean(frame); | |
1189 | size = min_t(u32, (ep->tx_req->req.length - ep->sent), | |
1190 | ep->ep.maxpacket); | |
1191 | buf = (u8 *)ep->tx_req->req.buf + ep->sent; | |
1192 | if (buf && size) { | |
1193 | ep->last = size; | |
1194 | frame_set_data(frame, buf); | |
1195 | frame_set_length(frame, size); | |
1196 | frame_set_status(frame, FRAME_OK); | |
1197 | frame_set_info(frame, 0); | |
1198 | return qe_ep_tx(ep, frame); | |
1199 | } | |
1200 | return -EIO; | |
1201 | } | |
1202 | ||
1203 | /* give a frame struct,send a ZLP */ | |
1204 | static int sendnulldata(struct qe_ep *ep, struct qe_frame *frame, uint infor) | |
1205 | { | |
1206 | struct qe_udc *udc = ep->udc; | |
1207 | ||
1208 | if (frame == NULL) | |
1209 | return -ENODEV; | |
1210 | ||
1211 | qe_frame_clean(frame); | |
1212 | frame_set_data(frame, (u8 *)udc->nullbuf); | |
1213 | frame_set_length(frame, 2); | |
1214 | frame_set_status(frame, FRAME_OK); | |
1215 | frame_set_info(frame, (ZLP | NO_CRC | infor)); | |
1216 | ||
1217 | return qe_ep_tx(ep, frame); | |
1218 | } | |
1219 | ||
1220 | static int frame_create_tx(struct qe_ep *ep, struct qe_frame *frame) | |
1221 | { | |
1222 | struct qe_req *req = ep->tx_req; | |
1223 | int reval; | |
1224 | ||
1225 | if (req == NULL) | |
1226 | return -ENODEV; | |
1227 | ||
1228 | if ((req->req.length - ep->sent) > 0) | |
1229 | reval = qe_usb_senddata(ep, frame); | |
1230 | else | |
1231 | reval = sendnulldata(ep, frame, 0); | |
1232 | ||
1233 | return reval; | |
1234 | } | |
1235 | ||
1236 | /* if direction is DIR_IN, the status is Device->Host | |
1237 | * if direction is DIR_OUT, the status transaction is Device<-Host | |
1238 | * in status phase, udc create a request and gain status */ | |
1239 | static int ep0_prime_status(struct qe_udc *udc, int direction) | |
1240 | { | |
1241 | ||
1242 | struct qe_ep *ep = &udc->eps[0]; | |
1243 | ||
1244 | if (direction == USB_DIR_IN) { | |
1245 | udc->ep0_state = DATA_STATE_NEED_ZLP; | |
1246 | udc->ep0_dir = USB_DIR_IN; | |
1247 | sendnulldata(ep, ep->txframe, SETUP_STATUS | NO_REQ); | |
1248 | } else { | |
1249 | udc->ep0_dir = USB_DIR_OUT; | |
1250 | udc->ep0_state = WAIT_FOR_OUT_STATUS; | |
1251 | } | |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | /* a request complete in ep0, whether gadget request or udc request */ | |
1257 | static void ep0_req_complete(struct qe_udc *udc, struct qe_req *req) | |
1258 | { | |
1259 | struct qe_ep *ep = &udc->eps[0]; | |
1260 | /* because usb and ep's status already been set in ch9setaddress() */ | |
1261 | ||
1262 | switch (udc->ep0_state) { | |
1263 | case DATA_STATE_XMIT: | |
1264 | done(ep, req, 0); | |
1265 | /* receive status phase */ | |
1266 | if (ep0_prime_status(udc, USB_DIR_OUT)) | |
1267 | qe_ep0_stall(udc); | |
1268 | break; | |
1269 | ||
1270 | case DATA_STATE_NEED_ZLP: | |
1271 | done(ep, req, 0); | |
1272 | udc->ep0_state = WAIT_FOR_SETUP; | |
1273 | break; | |
1274 | ||
1275 | case DATA_STATE_RECV: | |
1276 | done(ep, req, 0); | |
1277 | /* send status phase */ | |
1278 | if (ep0_prime_status(udc, USB_DIR_IN)) | |
1279 | qe_ep0_stall(udc); | |
1280 | break; | |
1281 | ||
1282 | case WAIT_FOR_OUT_STATUS: | |
1283 | done(ep, req, 0); | |
1284 | udc->ep0_state = WAIT_FOR_SETUP; | |
1285 | break; | |
1286 | ||
1287 | case WAIT_FOR_SETUP: | |
1288 | dev_vdbg(udc->dev, "Unexpected interrupt\n"); | |
1289 | break; | |
1290 | ||
1291 | default: | |
1292 | qe_ep0_stall(udc); | |
1293 | break; | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | static int ep0_txcomplete(struct qe_ep *ep, unsigned char restart) | |
1298 | { | |
1299 | struct qe_req *tx_req = NULL; | |
1300 | struct qe_frame *frame = ep->txframe; | |
1301 | ||
1302 | if ((frame_get_info(frame) & (ZLP | NO_REQ)) == (ZLP | NO_REQ)) { | |
1303 | if (!restart) | |
1304 | ep->udc->ep0_state = WAIT_FOR_SETUP; | |
1305 | else | |
1306 | sendnulldata(ep, ep->txframe, SETUP_STATUS | NO_REQ); | |
1307 | return 0; | |
1308 | } | |
1309 | ||
1310 | tx_req = ep->tx_req; | |
1311 | if (tx_req != NULL) { | |
1312 | if (!restart) { | |
1313 | int asent = ep->last; | |
1314 | ep->sent += asent; | |
1315 | ep->last -= asent; | |
1316 | } else { | |
1317 | ep->last = 0; | |
1318 | } | |
1319 | ||
1320 | /* a request already were transmitted completely */ | |
1321 | if ((ep->tx_req->req.length - ep->sent) <= 0) { | |
1322 | ep->tx_req->req.actual = (unsigned int)ep->sent; | |
1323 | ep0_req_complete(ep->udc, ep->tx_req); | |
1324 | ep->tx_req = NULL; | |
1325 | ep->last = 0; | |
1326 | ep->sent = 0; | |
1327 | } | |
1328 | } else { | |
1329 | dev_vdbg(ep->udc->dev, "the ep0_controller have no req\n"); | |
1330 | } | |
1331 | ||
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | static int ep0_txframe_handle(struct qe_ep *ep) | |
1336 | { | |
1337 | /* if have error, transmit again */ | |
1338 | if (frame_get_status(ep->txframe) & FRAME_ERROR) { | |
1339 | qe_ep_flushtxfifo(ep); | |
1340 | dev_vdbg(ep->udc->dev, "The EP0 transmit data have error!\n"); | |
1341 | if (frame_get_info(ep->txframe) & PID_DATA0) | |
1342 | ep->data01 = 0; | |
1343 | else | |
1344 | ep->data01 = 1; | |
1345 | ||
1346 | ep0_txcomplete(ep, 1); | |
1347 | } else | |
1348 | ep0_txcomplete(ep, 0); | |
1349 | ||
1350 | frame_create_tx(ep, ep->txframe); | |
1351 | return 0; | |
1352 | } | |
1353 | ||
1354 | static int qe_ep0_txconf(struct qe_ep *ep) | |
1355 | { | |
1356 | struct qe_bd __iomem *bd; | |
1357 | struct qe_frame *pframe; | |
1358 | u32 bdstatus; | |
1359 | ||
1360 | bd = ep->c_txbd; | |
1361 | bdstatus = in_be32((u32 __iomem *)bd); | |
1362 | while (!(bdstatus & T_R) && (bdstatus & ~T_W)) { | |
1363 | pframe = ep->txframe; | |
1364 | ||
1365 | /* clear and recycle the BD */ | |
1366 | out_be32((u32 __iomem *)bd, bdstatus & T_W); | |
1367 | out_be32(&bd->buf, 0); | |
1368 | if (bdstatus & T_W) | |
1369 | ep->c_txbd = ep->txbase; | |
1370 | else | |
1371 | ep->c_txbd++; | |
1372 | ||
1373 | if (ep->c_txbd == ep->n_txbd) { | |
1374 | if (bdstatus & DEVICE_T_ERROR) { | |
1375 | frame_set_status(pframe, FRAME_ERROR); | |
1376 | if (bdstatus & T_TO) | |
1377 | pframe->status |= TX_ER_TIMEOUT; | |
1378 | if (bdstatus & T_UN) | |
1379 | pframe->status |= TX_ER_UNDERUN; | |
1380 | } | |
1381 | ep0_txframe_handle(ep); | |
1382 | } | |
1383 | ||
1384 | bd = ep->c_txbd; | |
1385 | bdstatus = in_be32((u32 __iomem *)bd); | |
1386 | } | |
1387 | ||
1388 | return 0; | |
1389 | } | |
1390 | ||
1391 | static int ep_txframe_handle(struct qe_ep *ep) | |
1392 | { | |
1393 | if (frame_get_status(ep->txframe) & FRAME_ERROR) { | |
1394 | qe_ep_flushtxfifo(ep); | |
1395 | dev_vdbg(ep->udc->dev, "The EP0 transmit data have error!\n"); | |
1396 | if (frame_get_info(ep->txframe) & PID_DATA0) | |
1397 | ep->data01 = 0; | |
1398 | else | |
1399 | ep->data01 = 1; | |
1400 | ||
1401 | txcomplete(ep, 1); | |
1402 | } else | |
1403 | txcomplete(ep, 0); | |
1404 | ||
1405 | frame_create_tx(ep, ep->txframe); /* send the data */ | |
1406 | return 0; | |
1407 | } | |
1408 | ||
1409 | /* confirm the already trainsmited bd */ | |
1410 | static int qe_ep_txconf(struct qe_ep *ep) | |
1411 | { | |
1412 | struct qe_bd __iomem *bd; | |
1413 | struct qe_frame *pframe = NULL; | |
1414 | u32 bdstatus; | |
1415 | unsigned char breakonrxinterrupt = 0; | |
1416 | ||
1417 | bd = ep->c_txbd; | |
1418 | bdstatus = in_be32((u32 __iomem *)bd); | |
1419 | while (!(bdstatus & T_R) && (bdstatus & ~T_W)) { | |
1420 | pframe = ep->txframe; | |
1421 | if (bdstatus & DEVICE_T_ERROR) { | |
1422 | frame_set_status(pframe, FRAME_ERROR); | |
1423 | if (bdstatus & T_TO) | |
1424 | pframe->status |= TX_ER_TIMEOUT; | |
1425 | if (bdstatus & T_UN) | |
1426 | pframe->status |= TX_ER_UNDERUN; | |
1427 | } | |
1428 | ||
1429 | /* clear and recycle the BD */ | |
1430 | out_be32((u32 __iomem *)bd, bdstatus & T_W); | |
1431 | out_be32(&bd->buf, 0); | |
1432 | if (bdstatus & T_W) | |
1433 | ep->c_txbd = ep->txbase; | |
1434 | else | |
1435 | ep->c_txbd++; | |
1436 | ||
1437 | /* handle the tx frame */ | |
1438 | ep_txframe_handle(ep); | |
1439 | bd = ep->c_txbd; | |
1440 | bdstatus = in_be32((u32 __iomem *)bd); | |
1441 | } | |
1442 | if (breakonrxinterrupt) | |
1443 | return -EIO; | |
1444 | else | |
1445 | return 0; | |
1446 | } | |
1447 | ||
1448 | /* Add a request in queue, and try to transmit a packet */ | |
1449 | static int ep_req_send(struct qe_ep *ep, struct qe_req *req) | |
1450 | { | |
1451 | int reval = 0; | |
1452 | ||
1453 | if (ep->tx_req == NULL) { | |
1454 | ep->sent = 0; | |
1455 | ep->last = 0; | |
1456 | txcomplete(ep, 0); /* can gain a new tx_req */ | |
1457 | reval = frame_create_tx(ep, ep->txframe); | |
1458 | } | |
1459 | return reval; | |
1460 | } | |
1461 | ||
1462 | /* Maybe this is a good ideal */ | |
1463 | static int ep_req_rx(struct qe_ep *ep, struct qe_req *req) | |
1464 | { | |
1465 | struct qe_udc *udc = ep->udc; | |
1466 | struct qe_frame *pframe = NULL; | |
1467 | struct qe_bd __iomem *bd; | |
1468 | u32 bdstatus, length; | |
1469 | u32 vaddr, fsize; | |
1470 | u8 *cp; | |
1471 | u8 finish_req = 0; | |
1472 | u8 framepid; | |
1473 | ||
1474 | if (list_empty(&ep->queue)) { | |
1475 | dev_vdbg(udc->dev, "the req already finish!\n"); | |
1476 | return 0; | |
1477 | } | |
1478 | pframe = ep->rxframe; | |
1479 | ||
1480 | bd = ep->n_rxbd; | |
1481 | bdstatus = in_be32((u32 __iomem *)bd); | |
1482 | length = bdstatus & BD_LENGTH_MASK; | |
1483 | ||
1484 | while (!(bdstatus & R_E) && length) { | |
1485 | if (finish_req) | |
1486 | break; | |
1487 | if ((bdstatus & R_F) && (bdstatus & R_L) | |
1488 | && !(bdstatus & R_ERROR)) { | |
1489 | qe_frame_clean(pframe); | |
1490 | vaddr = (u32)phys_to_virt(in_be32(&bd->buf)); | |
1491 | frame_set_data(pframe, (u8 *)vaddr); | |
1492 | frame_set_length(pframe, (length - USB_CRC_SIZE)); | |
1493 | frame_set_status(pframe, FRAME_OK); | |
1494 | switch (bdstatus & R_PID) { | |
1495 | case R_PID_DATA1: | |
1496 | frame_set_info(pframe, PID_DATA1); break; | |
1497 | default: | |
1498 | frame_set_info(pframe, PID_DATA0); break; | |
1499 | } | |
1500 | /* handle the rx frame */ | |
1501 | ||
1502 | if (frame_get_info(pframe) & PID_DATA1) | |
1503 | framepid = 0x1; | |
1504 | else | |
1505 | framepid = 0; | |
1506 | ||
1507 | if (framepid != ep->data01) { | |
1508 | dev_vdbg(udc->dev, "the data01 error!\n"); | |
1509 | } else { | |
1510 | fsize = frame_get_length(pframe); | |
1511 | ||
1512 | cp = (u8 *)(req->req.buf) + req->req.actual; | |
1513 | if (cp) { | |
1514 | memcpy(cp, pframe->data, fsize); | |
1515 | req->req.actual += fsize; | |
1516 | if ((fsize < ep->ep.maxpacket) | |
1517 | || (req->req.actual >= | |
1518 | req->req.length)) { | |
1519 | finish_req = 1; | |
1520 | done(ep, req, 0); | |
1521 | if (list_empty(&ep->queue)) | |
1522 | qe_eprx_nack(ep); | |
1523 | } | |
1524 | } | |
1525 | qe_ep_toggledata01(ep); | |
1526 | } | |
1527 | } else { | |
1528 | dev_err(udc->dev, "The receive frame with error!\n"); | |
1529 | } | |
1530 | ||
1531 | /* note: don't clear the rxbd's buffer address * | |
1532 | * only Clear the length */ | |
1533 | out_be32((u32 __iomem *)bd, (bdstatus & BD_STATUS_MASK)); | |
1534 | ep->has_data--; | |
1535 | ||
1536 | /* Get next BD */ | |
1537 | if (bdstatus & R_W) | |
1538 | bd = ep->rxbase; | |
1539 | else | |
1540 | bd++; | |
1541 | ||
1542 | bdstatus = in_be32((u32 __iomem *)bd); | |
1543 | length = bdstatus & BD_LENGTH_MASK; | |
1544 | } | |
1545 | ||
1546 | ep->n_rxbd = bd; | |
1547 | ep_recycle_rxbds(ep); | |
1548 | ||
1549 | return 0; | |
1550 | } | |
1551 | ||
1552 | /* only add the request in queue */ | |
1553 | static int ep_req_receive(struct qe_ep *ep, struct qe_req *req) | |
1554 | { | |
1555 | if (ep->state == EP_STATE_NACK) { | |
1556 | if (ep->has_data <= 0) { | |
1557 | /* Enable rx and unmask rx interrupt */ | |
1558 | qe_eprx_normal(ep); | |
1559 | } else { | |
1560 | /* Copy the exist BD data */ | |
1561 | ep_req_rx(ep, req); | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | return 0; | |
1566 | } | |
1567 | ||
1568 | /******************************************************************** | |
1569 | Internal Used Function End | |
1570 | ********************************************************************/ | |
1571 | ||
1572 | /*----------------------------------------------------------------------- | |
1573 | Endpoint Management Functions For Gadget | |
1574 | -----------------------------------------------------------------------*/ | |
1575 | static int qe_ep_enable(struct usb_ep *_ep, | |
1576 | const struct usb_endpoint_descriptor *desc) | |
1577 | { | |
1578 | struct qe_udc *udc; | |
1579 | struct qe_ep *ep; | |
1580 | int retval = 0; | |
1581 | unsigned char epnum; | |
1582 | ||
1583 | ep = container_of(_ep, struct qe_ep, ep); | |
1584 | ||
1585 | /* catch various bogus parameters */ | |
1586 | if (!_ep || !desc || ep->desc || _ep->name == ep_name[0] || | |
1587 | (desc->bDescriptorType != USB_DT_ENDPOINT)) | |
1588 | return -EINVAL; | |
1589 | ||
1590 | udc = ep->udc; | |
1591 | if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN)) | |
1592 | return -ESHUTDOWN; | |
1593 | ||
1594 | epnum = (u8)desc->bEndpointAddress & 0xF; | |
1595 | ||
1596 | retval = qe_ep_init(udc, epnum, desc); | |
1597 | if (retval != 0) { | |
1598 | cpm_muram_free(cpm_muram_offset(ep->rxbase)); | |
1599 | dev_dbg(udc->dev, "enable ep%d failed\n", ep->epnum); | |
1600 | return -EINVAL; | |
1601 | } | |
1602 | dev_dbg(udc->dev, "enable ep%d successful\n", ep->epnum); | |
1603 | return 0; | |
1604 | } | |
1605 | ||
1606 | static int qe_ep_disable(struct usb_ep *_ep) | |
1607 | { | |
1608 | struct qe_udc *udc; | |
1609 | struct qe_ep *ep; | |
1610 | unsigned long flags; | |
1611 | unsigned int size; | |
1612 | ||
1613 | ep = container_of(_ep, struct qe_ep, ep); | |
1614 | udc = ep->udc; | |
1615 | ||
1616 | if (!_ep || !ep->desc) { | |
1617 | dev_dbg(udc->dev, "%s not enabled\n", _ep ? ep->ep.name : NULL); | |
1618 | return -EINVAL; | |
1619 | } | |
1620 | ||
1621 | spin_lock_irqsave(&udc->lock, flags); | |
1622 | /* Nuke all pending requests (does flush) */ | |
1623 | nuke(ep, -ESHUTDOWN); | |
1624 | ep->desc = NULL; | |
1625 | ep->stopped = 1; | |
af3ddbd7 | 1626 | ep->tx_req = NULL; |
82341b36 | 1627 | qe_ep_reset(udc, ep->epnum); |
3948f0e0 LY |
1628 | spin_unlock_irqrestore(&udc->lock, flags); |
1629 | ||
1630 | cpm_muram_free(cpm_muram_offset(ep->rxbase)); | |
1631 | ||
1632 | if (ep->dir == USB_DIR_OUT) | |
1633 | size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * | |
1634 | (USB_BDRING_LEN_RX + 1); | |
1635 | else | |
1636 | size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * | |
1637 | (USB_BDRING_LEN + 1); | |
1638 | ||
1639 | if (ep->dir != USB_DIR_IN) { | |
1640 | kfree(ep->rxframe); | |
1641 | if (ep->rxbufmap) { | |
1642 | dma_unmap_single(udc_controller->gadget.dev.parent, | |
1643 | ep->rxbuf_d, size, | |
1644 | DMA_FROM_DEVICE); | |
1645 | ep->rxbuf_d = DMA_ADDR_INVALID; | |
1646 | } else { | |
1647 | dma_sync_single_for_cpu( | |
1648 | udc_controller->gadget.dev.parent, | |
1649 | ep->rxbuf_d, size, | |
1650 | DMA_FROM_DEVICE); | |
1651 | } | |
1652 | kfree(ep->rxbuffer); | |
1653 | } | |
1654 | ||
1655 | if (ep->dir != USB_DIR_OUT) | |
1656 | kfree(ep->txframe); | |
1657 | ||
1658 | dev_dbg(udc->dev, "disabled %s OK\n", _ep->name); | |
1659 | return 0; | |
1660 | } | |
1661 | ||
1662 | static struct usb_request *qe_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) | |
1663 | { | |
1664 | struct qe_req *req; | |
1665 | ||
1666 | req = kzalloc(sizeof(*req), gfp_flags); | |
1667 | if (!req) | |
1668 | return NULL; | |
1669 | ||
1670 | req->req.dma = DMA_ADDR_INVALID; | |
1671 | ||
1672 | INIT_LIST_HEAD(&req->queue); | |
1673 | ||
1674 | return &req->req; | |
1675 | } | |
1676 | ||
1677 | static void qe_free_request(struct usb_ep *_ep, struct usb_request *_req) | |
1678 | { | |
1679 | struct qe_req *req; | |
1680 | ||
1681 | req = container_of(_req, struct qe_req, req); | |
1682 | ||
1683 | if (_req) | |
1684 | kfree(req); | |
1685 | } | |
1686 | ||
a30551db | 1687 | static int __qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req) |
3948f0e0 LY |
1688 | { |
1689 | struct qe_ep *ep = container_of(_ep, struct qe_ep, ep); | |
1690 | struct qe_req *req = container_of(_req, struct qe_req, req); | |
1691 | struct qe_udc *udc; | |
3948f0e0 LY |
1692 | int reval; |
1693 | ||
1694 | udc = ep->udc; | |
1695 | /* catch various bogus parameters */ | |
1696 | if (!_req || !req->req.complete || !req->req.buf | |
1697 | || !list_empty(&req->queue)) { | |
1698 | dev_dbg(udc->dev, "bad params\n"); | |
1699 | return -EINVAL; | |
1700 | } | |
1701 | if (!_ep || (!ep->desc && ep_index(ep))) { | |
1702 | dev_dbg(udc->dev, "bad ep\n"); | |
1703 | return -EINVAL; | |
1704 | } | |
1705 | ||
1706 | if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) | |
1707 | return -ESHUTDOWN; | |
1708 | ||
1709 | req->ep = ep; | |
1710 | ||
1711 | /* map virtual address to hardware */ | |
1712 | if (req->req.dma == DMA_ADDR_INVALID) { | |
1713 | req->req.dma = dma_map_single(ep->udc->gadget.dev.parent, | |
1714 | req->req.buf, | |
1715 | req->req.length, | |
1716 | ep_is_in(ep) | |
1717 | ? DMA_TO_DEVICE : | |
1718 | DMA_FROM_DEVICE); | |
1719 | req->mapped = 1; | |
1720 | } else { | |
1721 | dma_sync_single_for_device(ep->udc->gadget.dev.parent, | |
1722 | req->req.dma, req->req.length, | |
1723 | ep_is_in(ep) | |
1724 | ? DMA_TO_DEVICE : | |
1725 | DMA_FROM_DEVICE); | |
1726 | req->mapped = 0; | |
1727 | } | |
1728 | ||
1729 | req->req.status = -EINPROGRESS; | |
1730 | req->req.actual = 0; | |
1731 | ||
1732 | list_add_tail(&req->queue, &ep->queue); | |
1733 | dev_vdbg(udc->dev, "gadget have request in %s! %d\n", | |
1734 | ep->name, req->req.length); | |
a30551db | 1735 | |
3948f0e0 LY |
1736 | /* push the request to device */ |
1737 | if (ep_is_in(ep)) | |
1738 | reval = ep_req_send(ep, req); | |
1739 | ||
1740 | /* EP0 */ | |
1741 | if (ep_index(ep) == 0 && req->req.length > 0) { | |
1742 | if (ep_is_in(ep)) | |
1743 | udc->ep0_state = DATA_STATE_XMIT; | |
1744 | else | |
1745 | udc->ep0_state = DATA_STATE_RECV; | |
1746 | } | |
1747 | ||
1748 | if (ep->dir == USB_DIR_OUT) | |
1749 | reval = ep_req_receive(ep, req); | |
1750 | ||
3948f0e0 LY |
1751 | return 0; |
1752 | } | |
1753 | ||
a30551db AV |
1754 | /* queues (submits) an I/O request to an endpoint */ |
1755 | static int qe_ep_queue(struct usb_ep *_ep, struct usb_request *_req, | |
1756 | gfp_t gfp_flags) | |
1757 | { | |
1758 | struct qe_ep *ep = container_of(_ep, struct qe_ep, ep); | |
1759 | struct qe_udc *udc = ep->udc; | |
1760 | unsigned long flags; | |
1761 | int ret; | |
1762 | ||
1763 | spin_lock_irqsave(&udc->lock, flags); | |
1764 | ret = __qe_ep_queue(_ep, _req); | |
1765 | spin_unlock_irqrestore(&udc->lock, flags); | |
1766 | return ret; | |
1767 | } | |
1768 | ||
3948f0e0 LY |
1769 | /* dequeues (cancels, unlinks) an I/O request from an endpoint */ |
1770 | static int qe_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) | |
1771 | { | |
1772 | struct qe_ep *ep = container_of(_ep, struct qe_ep, ep); | |
1773 | struct qe_req *req; | |
1774 | unsigned long flags; | |
1775 | ||
1776 | if (!_ep || !_req) | |
1777 | return -EINVAL; | |
1778 | ||
1779 | spin_lock_irqsave(&ep->udc->lock, flags); | |
1780 | ||
1781 | /* make sure it's actually queued on this endpoint */ | |
1782 | list_for_each_entry(req, &ep->queue, queue) { | |
1783 | if (&req->req == _req) | |
1784 | break; | |
1785 | } | |
1786 | ||
1787 | if (&req->req != _req) { | |
1788 | spin_unlock_irqrestore(&ep->udc->lock, flags); | |
1789 | return -EINVAL; | |
1790 | } | |
1791 | ||
1792 | done(ep, req, -ECONNRESET); | |
1793 | ||
1794 | spin_unlock_irqrestore(&ep->udc->lock, flags); | |
1795 | return 0; | |
1796 | } | |
1797 | ||
1798 | /*----------------------------------------------------------------- | |
1799 | * modify the endpoint halt feature | |
1800 | * @ep: the non-isochronous endpoint being stalled | |
1801 | * @value: 1--set halt 0--clear halt | |
1802 | * Returns zero, or a negative error code. | |
1803 | *----------------------------------------------------------------*/ | |
1804 | static int qe_ep_set_halt(struct usb_ep *_ep, int value) | |
1805 | { | |
1806 | struct qe_ep *ep; | |
1807 | unsigned long flags; | |
1808 | int status = -EOPNOTSUPP; | |
1809 | struct qe_udc *udc; | |
1810 | ||
1811 | ep = container_of(_ep, struct qe_ep, ep); | |
1812 | if (!_ep || !ep->desc) { | |
1813 | status = -EINVAL; | |
1814 | goto out; | |
1815 | } | |
1816 | ||
3948f0e0 LY |
1817 | udc = ep->udc; |
1818 | /* Attempt to halt IN ep will fail if any transfer requests | |
1819 | * are still queue */ | |
1820 | if (value && ep_is_in(ep) && !list_empty(&ep->queue)) { | |
1821 | status = -EAGAIN; | |
1822 | goto out; | |
1823 | } | |
1824 | ||
1825 | status = 0; | |
1826 | spin_lock_irqsave(&ep->udc->lock, flags); | |
1827 | qe_eptx_stall_change(ep, value); | |
1828 | qe_eprx_stall_change(ep, value); | |
1829 | spin_unlock_irqrestore(&ep->udc->lock, flags); | |
1830 | ||
1831 | if (ep->epnum == 0) { | |
1832 | udc->ep0_state = WAIT_FOR_SETUP; | |
1833 | udc->ep0_dir = 0; | |
1834 | } | |
15d5a9ac LY |
1835 | |
1836 | /* set data toggle to DATA0 on clear halt */ | |
1837 | if (value == 0) | |
1838 | ep->data01 = 0; | |
3948f0e0 | 1839 | out: |
928dfa6c | 1840 | dev_vdbg(udc->dev, "%s %s halt stat %d\n", ep->ep.name, |
3948f0e0 LY |
1841 | value ? "set" : "clear", status); |
1842 | ||
1843 | return status; | |
1844 | } | |
1845 | ||
1846 | static struct usb_ep_ops qe_ep_ops = { | |
1847 | .enable = qe_ep_enable, | |
1848 | .disable = qe_ep_disable, | |
1849 | ||
1850 | .alloc_request = qe_alloc_request, | |
1851 | .free_request = qe_free_request, | |
1852 | ||
1853 | .queue = qe_ep_queue, | |
1854 | .dequeue = qe_ep_dequeue, | |
1855 | ||
1856 | .set_halt = qe_ep_set_halt, | |
1857 | }; | |
1858 | ||
1859 | /*------------------------------------------------------------------------ | |
1860 | Gadget Driver Layer Operations | |
1861 | ------------------------------------------------------------------------*/ | |
1862 | ||
1863 | /* Get the current frame number */ | |
1864 | static int qe_get_frame(struct usb_gadget *gadget) | |
1865 | { | |
1866 | u16 tmp; | |
1867 | ||
1868 | tmp = in_be16(&udc_controller->usb_param->frame_n); | |
1869 | if (tmp & 0x8000) | |
1870 | tmp = tmp & 0x07ff; | |
1871 | else | |
1872 | tmp = -EINVAL; | |
1873 | ||
1874 | return (int)tmp; | |
1875 | } | |
1876 | ||
1877 | /* Tries to wake up the host connected to this gadget | |
1878 | * | |
1879 | * Return : 0-success | |
1880 | * Negative-this feature not enabled by host or not supported by device hw | |
1881 | */ | |
1882 | static int qe_wakeup(struct usb_gadget *gadget) | |
1883 | { | |
1884 | return -ENOTSUPP; | |
1885 | } | |
1886 | ||
1887 | /* Notify controller that VBUS is powered, Called by whatever | |
1888 | detects VBUS sessions */ | |
1889 | static int qe_vbus_session(struct usb_gadget *gadget, int is_active) | |
1890 | { | |
1891 | return -ENOTSUPP; | |
1892 | } | |
1893 | ||
1894 | /* constrain controller's VBUS power usage | |
1895 | * This call is used by gadget drivers during SET_CONFIGURATION calls, | |
1896 | * reporting how much power the device may consume. For example, this | |
1897 | * could affect how quickly batteries are recharged. | |
1898 | * | |
1899 | * Returns zero on success, else negative errno. | |
1900 | */ | |
1901 | static int qe_vbus_draw(struct usb_gadget *gadget, unsigned mA) | |
1902 | { | |
1903 | return -ENOTSUPP; | |
1904 | } | |
1905 | ||
1906 | /* Change Data+ pullup status | |
1907 | * this func is used by usb_gadget_connect/disconnect | |
1908 | */ | |
1909 | static int qe_pullup(struct usb_gadget *gadget, int is_on) | |
1910 | { | |
1911 | return -ENOTSUPP; | |
1912 | } | |
1913 | ||
1914 | /* defined in usb_gadget.h */ | |
1915 | static struct usb_gadget_ops qe_gadget_ops = { | |
1916 | .get_frame = qe_get_frame, | |
1917 | .wakeup = qe_wakeup, | |
1918 | /* .set_selfpowered = qe_set_selfpowered,*/ /* always selfpowered */ | |
1919 | .vbus_session = qe_vbus_session, | |
1920 | .vbus_draw = qe_vbus_draw, | |
1921 | .pullup = qe_pullup, | |
1922 | }; | |
1923 | ||
1924 | /*------------------------------------------------------------------------- | |
1925 | USB ep0 Setup process in BUS Enumeration | |
1926 | -------------------------------------------------------------------------*/ | |
1927 | static int udc_reset_ep_queue(struct qe_udc *udc, u8 pipe) | |
1928 | { | |
1929 | struct qe_ep *ep = &udc->eps[pipe]; | |
1930 | ||
1931 | nuke(ep, -ECONNRESET); | |
1932 | ep->tx_req = NULL; | |
1933 | return 0; | |
1934 | } | |
1935 | ||
1936 | static int reset_queues(struct qe_udc *udc) | |
1937 | { | |
1938 | u8 pipe; | |
1939 | ||
1940 | for (pipe = 0; pipe < USB_MAX_ENDPOINTS; pipe++) | |
1941 | udc_reset_ep_queue(udc, pipe); | |
1942 | ||
1943 | /* report disconnect; the driver is already quiesced */ | |
1944 | spin_unlock(&udc->lock); | |
1945 | udc->driver->disconnect(&udc->gadget); | |
1946 | spin_lock(&udc->lock); | |
1947 | ||
1948 | return 0; | |
1949 | } | |
1950 | ||
1951 | static void ch9setaddress(struct qe_udc *udc, u16 value, u16 index, | |
1952 | u16 length) | |
1953 | { | |
1954 | /* Save the new address to device struct */ | |
1955 | udc->device_address = (u8) value; | |
1956 | /* Update usb state */ | |
1957 | udc->usb_state = USB_STATE_ADDRESS; | |
1958 | ||
1959 | /* Status phase , send a ZLP */ | |
1960 | if (ep0_prime_status(udc, USB_DIR_IN)) | |
1961 | qe_ep0_stall(udc); | |
1962 | } | |
1963 | ||
1964 | static void ownercomplete(struct usb_ep *_ep, struct usb_request *_req) | |
1965 | { | |
1966 | struct qe_req *req = container_of(_req, struct qe_req, req); | |
1967 | ||
1968 | req->req.buf = NULL; | |
1969 | kfree(req); | |
1970 | } | |
1971 | ||
928dfa6c LY |
1972 | static void ch9getstatus(struct qe_udc *udc, u8 request_type, u16 value, |
1973 | u16 index, u16 length) | |
3948f0e0 | 1974 | { |
928dfa6c | 1975 | u16 usb_status = 0; |
3948f0e0 LY |
1976 | struct qe_req *req; |
1977 | struct qe_ep *ep; | |
1978 | int status = 0; | |
1979 | ||
1980 | ep = &udc->eps[0]; | |
928dfa6c LY |
1981 | if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) { |
1982 | /* Get device status */ | |
1983 | usb_status = 1 << USB_DEVICE_SELF_POWERED; | |
1984 | } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) { | |
1985 | /* Get interface status */ | |
1986 | /* We don't have interface information in udc driver */ | |
1987 | usb_status = 0; | |
1988 | } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) { | |
1989 | /* Get endpoint status */ | |
1990 | int pipe = index & USB_ENDPOINT_NUMBER_MASK; | |
1991 | struct qe_ep *target_ep = &udc->eps[pipe]; | |
1992 | u16 usep; | |
1993 | ||
1994 | /* stall if endpoint doesn't exist */ | |
1995 | if (!target_ep->desc) | |
1996 | goto stall; | |
1997 | ||
1998 | usep = in_be16(&udc->usb_regs->usb_usep[pipe]); | |
1999 | if (index & USB_DIR_IN) { | |
2000 | if (target_ep->dir != USB_DIR_IN) | |
2001 | goto stall; | |
2002 | if ((usep & USB_THS_MASK) == USB_THS_STALL) | |
2003 | usb_status = 1 << USB_ENDPOINT_HALT; | |
2004 | } else { | |
2005 | if (target_ep->dir != USB_DIR_OUT) | |
2006 | goto stall; | |
2007 | if ((usep & USB_RHS_MASK) == USB_RHS_STALL) | |
2008 | usb_status = 1 << USB_ENDPOINT_HALT; | |
2009 | } | |
2010 | } | |
3948f0e0 LY |
2011 | |
2012 | req = container_of(qe_alloc_request(&ep->ep, GFP_KERNEL), | |
2013 | struct qe_req, req); | |
2014 | req->req.length = 2; | |
928dfa6c LY |
2015 | req->req.buf = udc->statusbuf; |
2016 | *(u16 *)req->req.buf = cpu_to_le16(usb_status); | |
3948f0e0 LY |
2017 | req->req.status = -EINPROGRESS; |
2018 | req->req.actual = 0; | |
2019 | req->req.complete = ownercomplete; | |
2020 | ||
2021 | udc->ep0_dir = USB_DIR_IN; | |
2022 | ||
2023 | /* data phase */ | |
a30551db | 2024 | status = __qe_ep_queue(&ep->ep, &req->req); |
3948f0e0 | 2025 | |
928dfa6c LY |
2026 | if (status == 0) |
2027 | return; | |
2028 | stall: | |
2029 | dev_err(udc->dev, "Can't respond to getstatus request \n"); | |
2030 | qe_ep0_stall(udc); | |
3948f0e0 LY |
2031 | } |
2032 | ||
2033 | /* only handle the setup request, suppose the device in normal status */ | |
2034 | static void setup_received_handle(struct qe_udc *udc, | |
2035 | struct usb_ctrlrequest *setup) | |
2036 | { | |
2037 | /* Fix Endian (udc->local_setup_buff is cpu Endian now)*/ | |
2038 | u16 wValue = le16_to_cpu(setup->wValue); | |
2039 | u16 wIndex = le16_to_cpu(setup->wIndex); | |
2040 | u16 wLength = le16_to_cpu(setup->wLength); | |
2041 | ||
2042 | /* clear the previous request in the ep0 */ | |
2043 | udc_reset_ep_queue(udc, 0); | |
2044 | ||
2045 | if (setup->bRequestType & USB_DIR_IN) | |
2046 | udc->ep0_dir = USB_DIR_IN; | |
2047 | else | |
2048 | udc->ep0_dir = USB_DIR_OUT; | |
2049 | ||
2050 | switch (setup->bRequest) { | |
2051 | case USB_REQ_GET_STATUS: | |
2052 | /* Data+Status phase form udc */ | |
2053 | if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK)) | |
2054 | != (USB_DIR_IN | USB_TYPE_STANDARD)) | |
2055 | break; | |
928dfa6c LY |
2056 | ch9getstatus(udc, setup->bRequestType, wValue, wIndex, |
2057 | wLength); | |
3948f0e0 LY |
2058 | return; |
2059 | ||
2060 | case USB_REQ_SET_ADDRESS: | |
2061 | /* Status phase from udc */ | |
2062 | if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD | | |
2063 | USB_RECIP_DEVICE)) | |
2064 | break; | |
2065 | ch9setaddress(udc, wValue, wIndex, wLength); | |
2066 | return; | |
2067 | ||
2068 | case USB_REQ_CLEAR_FEATURE: | |
2069 | case USB_REQ_SET_FEATURE: | |
2070 | /* Requests with no data phase, status phase from udc */ | |
928dfa6c | 2071 | if ((setup->bRequestType & USB_TYPE_MASK) |
3948f0e0 LY |
2072 | != USB_TYPE_STANDARD) |
2073 | break; | |
2074 | ||
2075 | if ((setup->bRequestType & USB_RECIP_MASK) | |
2076 | == USB_RECIP_ENDPOINT) { | |
2077 | int pipe = wIndex & USB_ENDPOINT_NUMBER_MASK; | |
2078 | struct qe_ep *ep; | |
2079 | ||
2080 | if (wValue != 0 || wLength != 0 | |
2081 | || pipe > USB_MAX_ENDPOINTS) | |
2082 | break; | |
2083 | ep = &udc->eps[pipe]; | |
2084 | ||
2085 | spin_unlock(&udc->lock); | |
2086 | qe_ep_set_halt(&ep->ep, | |
2087 | (setup->bRequest == USB_REQ_SET_FEATURE) | |
2088 | ? 1 : 0); | |
2089 | spin_lock(&udc->lock); | |
2090 | } | |
2091 | ||
2092 | ep0_prime_status(udc, USB_DIR_IN); | |
2093 | ||
2094 | return; | |
2095 | ||
2096 | default: | |
2097 | break; | |
2098 | } | |
2099 | ||
2100 | if (wLength) { | |
2101 | /* Data phase from gadget, status phase from udc */ | |
2102 | if (setup->bRequestType & USB_DIR_IN) { | |
2103 | udc->ep0_state = DATA_STATE_XMIT; | |
2104 | udc->ep0_dir = USB_DIR_IN; | |
928dfa6c | 2105 | } else { |
3948f0e0 LY |
2106 | udc->ep0_state = DATA_STATE_RECV; |
2107 | udc->ep0_dir = USB_DIR_OUT; | |
2108 | } | |
2109 | spin_unlock(&udc->lock); | |
2110 | if (udc->driver->setup(&udc->gadget, | |
2111 | &udc->local_setup_buff) < 0) | |
2112 | qe_ep0_stall(udc); | |
2113 | spin_lock(&udc->lock); | |
2114 | } else { | |
2115 | /* No data phase, IN status from gadget */ | |
2116 | udc->ep0_dir = USB_DIR_IN; | |
2117 | spin_unlock(&udc->lock); | |
2118 | if (udc->driver->setup(&udc->gadget, | |
2119 | &udc->local_setup_buff) < 0) | |
2120 | qe_ep0_stall(udc); | |
2121 | spin_lock(&udc->lock); | |
2122 | udc->ep0_state = DATA_STATE_NEED_ZLP; | |
2123 | } | |
2124 | } | |
2125 | ||
2126 | /*------------------------------------------------------------------------- | |
2127 | USB Interrupt handlers | |
2128 | -------------------------------------------------------------------------*/ | |
2129 | static void suspend_irq(struct qe_udc *udc) | |
2130 | { | |
2131 | udc->resume_state = udc->usb_state; | |
2132 | udc->usb_state = USB_STATE_SUSPENDED; | |
2133 | ||
2134 | /* report suspend to the driver ,serial.c not support this*/ | |
2135 | if (udc->driver->suspend) | |
2136 | udc->driver->suspend(&udc->gadget); | |
2137 | } | |
2138 | ||
2139 | static void resume_irq(struct qe_udc *udc) | |
2140 | { | |
2141 | udc->usb_state = udc->resume_state; | |
2142 | udc->resume_state = 0; | |
2143 | ||
2144 | /* report resume to the driver , serial.c not support this*/ | |
2145 | if (udc->driver->resume) | |
2146 | udc->driver->resume(&udc->gadget); | |
2147 | } | |
2148 | ||
2149 | static void idle_irq(struct qe_udc *udc) | |
2150 | { | |
2151 | u8 usbs; | |
2152 | ||
2153 | usbs = in_8(&udc->usb_regs->usb_usbs); | |
2154 | if (usbs & USB_IDLE_STATUS_MASK) { | |
2155 | if ((udc->usb_state) != USB_STATE_SUSPENDED) | |
2156 | suspend_irq(udc); | |
2157 | } else { | |
2158 | if (udc->usb_state == USB_STATE_SUSPENDED) | |
2159 | resume_irq(udc); | |
2160 | } | |
2161 | } | |
2162 | ||
2163 | static int reset_irq(struct qe_udc *udc) | |
2164 | { | |
2165 | unsigned char i; | |
2166 | ||
ef84e405 AV |
2167 | if (udc->usb_state == USB_STATE_DEFAULT) |
2168 | return 0; | |
2169 | ||
3948f0e0 LY |
2170 | qe_usb_disable(); |
2171 | out_8(&udc->usb_regs->usb_usadr, 0); | |
2172 | ||
2173 | for (i = 0; i < USB_MAX_ENDPOINTS; i++) { | |
2174 | if (udc->eps[i].init) | |
2175 | qe_ep_reset(udc, i); | |
2176 | } | |
2177 | ||
2178 | reset_queues(udc); | |
2179 | udc->usb_state = USB_STATE_DEFAULT; | |
2180 | udc->ep0_state = WAIT_FOR_SETUP; | |
2181 | udc->ep0_dir = USB_DIR_OUT; | |
2182 | qe_usb_enable(); | |
2183 | return 0; | |
2184 | } | |
2185 | ||
2186 | static int bsy_irq(struct qe_udc *udc) | |
2187 | { | |
2188 | return 0; | |
2189 | } | |
2190 | ||
2191 | static int txe_irq(struct qe_udc *udc) | |
2192 | { | |
2193 | return 0; | |
2194 | } | |
2195 | ||
2196 | /* ep0 tx interrupt also in here */ | |
2197 | static int tx_irq(struct qe_udc *udc) | |
2198 | { | |
2199 | struct qe_ep *ep; | |
2200 | struct qe_bd __iomem *bd; | |
2201 | int i, res = 0; | |
2202 | ||
2203 | if ((udc->usb_state == USB_STATE_ADDRESS) | |
2204 | && (in_8(&udc->usb_regs->usb_usadr) == 0)) | |
2205 | out_8(&udc->usb_regs->usb_usadr, udc->device_address); | |
2206 | ||
2207 | for (i = (USB_MAX_ENDPOINTS-1); ((i >= 0) && (res == 0)); i--) { | |
2208 | ep = &udc->eps[i]; | |
2209 | if (ep && ep->init && (ep->dir != USB_DIR_OUT)) { | |
2210 | bd = ep->c_txbd; | |
2211 | if (!(in_be32((u32 __iomem *)bd) & T_R) | |
2212 | && (in_be32(&bd->buf))) { | |
928dfa6c | 2213 | /* confirm the transmitted bd */ |
3948f0e0 LY |
2214 | if (ep->epnum == 0) |
2215 | res = qe_ep0_txconf(ep); | |
2216 | else | |
2217 | res = qe_ep_txconf(ep); | |
3948f0e0 LY |
2218 | } |
2219 | } | |
2220 | } | |
2221 | return res; | |
2222 | } | |
2223 | ||
2224 | ||
2225 | /* setup packect's rx is handle in the function too */ | |
2226 | static void rx_irq(struct qe_udc *udc) | |
2227 | { | |
2228 | struct qe_ep *ep; | |
2229 | struct qe_bd __iomem *bd; | |
2230 | int i; | |
2231 | ||
2232 | for (i = 0; i < USB_MAX_ENDPOINTS; i++) { | |
2233 | ep = &udc->eps[i]; | |
2234 | if (ep && ep->init && (ep->dir != USB_DIR_IN)) { | |
2235 | bd = ep->n_rxbd; | |
2236 | if (!(in_be32((u32 __iomem *)bd) & R_E) | |
2237 | && (in_be32(&bd->buf))) { | |
2238 | if (ep->epnum == 0) { | |
2239 | qe_ep0_rx(udc); | |
2240 | } else { | |
2241 | /*non-setup package receive*/ | |
2242 | qe_ep_rx(ep); | |
2243 | } | |
2244 | } | |
2245 | } | |
2246 | } | |
2247 | } | |
2248 | ||
2249 | static irqreturn_t qe_udc_irq(int irq, void *_udc) | |
2250 | { | |
2251 | struct qe_udc *udc = (struct qe_udc *)_udc; | |
2252 | u16 irq_src; | |
2253 | irqreturn_t status = IRQ_NONE; | |
2254 | unsigned long flags; | |
2255 | ||
3948f0e0 LY |
2256 | spin_lock_irqsave(&udc->lock, flags); |
2257 | ||
2258 | irq_src = in_be16(&udc->usb_regs->usb_usber) & | |
2259 | in_be16(&udc->usb_regs->usb_usbmr); | |
2260 | /* Clear notification bits */ | |
2261 | out_be16(&udc->usb_regs->usb_usber, irq_src); | |
2262 | /* USB Interrupt */ | |
2263 | if (irq_src & USB_E_IDLE_MASK) { | |
2264 | idle_irq(udc); | |
2265 | irq_src &= ~USB_E_IDLE_MASK; | |
2266 | status = IRQ_HANDLED; | |
2267 | } | |
2268 | ||
2269 | if (irq_src & USB_E_TXB_MASK) { | |
2270 | tx_irq(udc); | |
2271 | irq_src &= ~USB_E_TXB_MASK; | |
2272 | status = IRQ_HANDLED; | |
2273 | } | |
2274 | ||
2275 | if (irq_src & USB_E_RXB_MASK) { | |
2276 | rx_irq(udc); | |
2277 | irq_src &= ~USB_E_RXB_MASK; | |
2278 | status = IRQ_HANDLED; | |
2279 | } | |
2280 | ||
2281 | if (irq_src & USB_E_RESET_MASK) { | |
2282 | reset_irq(udc); | |
2283 | irq_src &= ~USB_E_RESET_MASK; | |
2284 | status = IRQ_HANDLED; | |
2285 | } | |
2286 | ||
2287 | if (irq_src & USB_E_BSY_MASK) { | |
2288 | bsy_irq(udc); | |
2289 | irq_src &= ~USB_E_BSY_MASK; | |
2290 | status = IRQ_HANDLED; | |
2291 | } | |
2292 | ||
2293 | if (irq_src & USB_E_TXE_MASK) { | |
2294 | txe_irq(udc); | |
2295 | irq_src &= ~USB_E_TXE_MASK; | |
2296 | status = IRQ_HANDLED; | |
2297 | } | |
2298 | ||
2299 | spin_unlock_irqrestore(&udc->lock, flags); | |
2300 | ||
2301 | return status; | |
2302 | } | |
2303 | ||
2304 | /*------------------------------------------------------------------------- | |
2305 | Gadget driver register and unregister. | |
2306 | --------------------------------------------------------------------------*/ | |
2307 | int usb_gadget_register_driver(struct usb_gadget_driver *driver) | |
2308 | { | |
2309 | int retval; | |
2310 | unsigned long flags = 0; | |
2311 | ||
2312 | /* standard operations */ | |
2313 | if (!udc_controller) | |
2314 | return -ENODEV; | |
2315 | ||
2316 | if (!driver || (driver->speed != USB_SPEED_FULL | |
2317 | && driver->speed != USB_SPEED_HIGH) | |
2318 | || !driver->bind || !driver->disconnect | |
2319 | || !driver->setup) | |
2320 | return -EINVAL; | |
2321 | ||
2322 | if (udc_controller->driver) | |
2323 | return -EBUSY; | |
2324 | ||
2325 | /* lock is needed but whether should use this lock or another */ | |
2326 | spin_lock_irqsave(&udc_controller->lock, flags); | |
2327 | ||
2328 | driver->driver.bus = NULL; | |
2329 | /* hook up the driver */ | |
2330 | udc_controller->driver = driver; | |
2331 | udc_controller->gadget.dev.driver = &driver->driver; | |
2332 | udc_controller->gadget.speed = (enum usb_device_speed)(driver->speed); | |
2333 | spin_unlock_irqrestore(&udc_controller->lock, flags); | |
2334 | ||
2335 | retval = driver->bind(&udc_controller->gadget); | |
2336 | if (retval) { | |
2337 | dev_err(udc_controller->dev, "bind to %s --> %d", | |
2338 | driver->driver.name, retval); | |
2339 | udc_controller->gadget.dev.driver = NULL; | |
2340 | udc_controller->driver = NULL; | |
2341 | return retval; | |
2342 | } | |
2343 | ||
2344 | /* Enable IRQ reg and Set usbcmd reg EN bit */ | |
2345 | qe_usb_enable(); | |
2346 | ||
2347 | out_be16(&udc_controller->usb_regs->usb_usber, 0xffff); | |
2348 | out_be16(&udc_controller->usb_regs->usb_usbmr, USB_E_DEFAULT_DEVICE); | |
2349 | udc_controller->usb_state = USB_STATE_ATTACHED; | |
2350 | udc_controller->ep0_state = WAIT_FOR_SETUP; | |
2351 | udc_controller->ep0_dir = USB_DIR_OUT; | |
2352 | dev_info(udc_controller->dev, "%s bind to driver %s \n", | |
2353 | udc_controller->gadget.name, driver->driver.name); | |
2354 | return 0; | |
2355 | } | |
2356 | EXPORT_SYMBOL(usb_gadget_register_driver); | |
2357 | ||
2358 | int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) | |
2359 | { | |
2360 | struct qe_ep *loop_ep; | |
2361 | unsigned long flags; | |
2362 | ||
2363 | if (!udc_controller) | |
2364 | return -ENODEV; | |
2365 | ||
2366 | if (!driver || driver != udc_controller->driver) | |
2367 | return -EINVAL; | |
2368 | ||
2369 | /* stop usb controller, disable intr */ | |
2370 | qe_usb_disable(); | |
2371 | ||
2372 | /* in fact, no needed */ | |
2373 | udc_controller->usb_state = USB_STATE_ATTACHED; | |
2374 | udc_controller->ep0_state = WAIT_FOR_SETUP; | |
2375 | udc_controller->ep0_dir = 0; | |
2376 | ||
2377 | /* stand operation */ | |
2378 | spin_lock_irqsave(&udc_controller->lock, flags); | |
2379 | udc_controller->gadget.speed = USB_SPEED_UNKNOWN; | |
2380 | nuke(&udc_controller->eps[0], -ESHUTDOWN); | |
2381 | list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list, | |
2382 | ep.ep_list) | |
2383 | nuke(loop_ep, -ESHUTDOWN); | |
2384 | spin_unlock_irqrestore(&udc_controller->lock, flags); | |
2385 | ||
9ac36da3 AV |
2386 | /* report disconnect; the controller is already quiesced */ |
2387 | driver->disconnect(&udc_controller->gadget); | |
2388 | ||
3948f0e0 LY |
2389 | /* unbind gadget and unhook driver. */ |
2390 | driver->unbind(&udc_controller->gadget); | |
2391 | udc_controller->gadget.dev.driver = NULL; | |
2392 | udc_controller->driver = NULL; | |
2393 | ||
2394 | dev_info(udc_controller->dev, "unregistered gadget driver '%s'\r\n", | |
2395 | driver->driver.name); | |
2396 | return 0; | |
2397 | } | |
2398 | EXPORT_SYMBOL(usb_gadget_unregister_driver); | |
2399 | ||
2400 | /* udc structure's alloc and setup, include ep-param alloc */ | |
2dc11581 | 2401 | static struct qe_udc __devinit *qe_udc_config(struct platform_device *ofdev) |
3948f0e0 LY |
2402 | { |
2403 | struct qe_udc *udc; | |
3ed38802 | 2404 | struct device_node *np = ofdev->dev.of_node; |
3948f0e0 LY |
2405 | unsigned int tmp_addr = 0; |
2406 | struct usb_device_para __iomem *usbpram; | |
2407 | unsigned int i; | |
2408 | u64 size; | |
2409 | u32 offset; | |
2410 | ||
2411 | udc = kzalloc(sizeof(*udc), GFP_KERNEL); | |
2412 | if (udc == NULL) { | |
2413 | dev_err(&ofdev->dev, "malloc udc failed\n"); | |
2414 | goto cleanup; | |
2415 | } | |
2416 | ||
2417 | udc->dev = &ofdev->dev; | |
2418 | ||
2419 | /* get default address of usb parameter in MURAM from device tree */ | |
2420 | offset = *of_get_address(np, 1, &size, NULL); | |
2421 | udc->usb_param = cpm_muram_addr(offset); | |
2422 | memset_io(udc->usb_param, 0, size); | |
2423 | ||
2424 | usbpram = udc->usb_param; | |
2425 | out_be16(&usbpram->frame_n, 0); | |
2426 | out_be32(&usbpram->rstate, 0); | |
2427 | ||
2428 | tmp_addr = cpm_muram_alloc((USB_MAX_ENDPOINTS * | |
2429 | sizeof(struct usb_ep_para)), | |
2430 | USB_EP_PARA_ALIGNMENT); | |
cd40c4c4 AV |
2431 | if (IS_ERR_VALUE(tmp_addr)) |
2432 | goto cleanup; | |
3948f0e0 LY |
2433 | |
2434 | for (i = 0; i < USB_MAX_ENDPOINTS; i++) { | |
2435 | out_be16(&usbpram->epptr[i], (u16)tmp_addr); | |
2436 | udc->ep_param[i] = cpm_muram_addr(tmp_addr); | |
2437 | tmp_addr += 32; | |
2438 | } | |
2439 | ||
2440 | memset_io(udc->ep_param[0], 0, | |
2441 | USB_MAX_ENDPOINTS * sizeof(struct usb_ep_para)); | |
2442 | ||
2443 | udc->resume_state = USB_STATE_NOTATTACHED; | |
2444 | udc->usb_state = USB_STATE_POWERED; | |
2445 | udc->ep0_dir = 0; | |
2446 | ||
2447 | spin_lock_init(&udc->lock); | |
2448 | return udc; | |
2449 | ||
2450 | cleanup: | |
2451 | kfree(udc); | |
2452 | return NULL; | |
2453 | } | |
2454 | ||
2455 | /* USB Controller register init */ | |
2456 | static int __devinit qe_udc_reg_init(struct qe_udc *udc) | |
2457 | { | |
2458 | struct usb_ctlr __iomem *qe_usbregs; | |
2459 | qe_usbregs = udc->usb_regs; | |
2460 | ||
2247818a | 2461 | /* Spec says that we must enable the USB controller to change mode. */ |
3948f0e0 | 2462 | out_8(&qe_usbregs->usb_usmod, 0x01); |
2247818a AV |
2463 | /* Mode changed, now disable it, since muram isn't initialized yet. */ |
2464 | out_8(&qe_usbregs->usb_usmod, 0x00); | |
2465 | ||
2466 | /* Initialize the rest. */ | |
3948f0e0 LY |
2467 | out_be16(&qe_usbregs->usb_usbmr, 0); |
2468 | out_8(&qe_usbregs->usb_uscom, 0); | |
2469 | out_be16(&qe_usbregs->usb_usber, USBER_ALL_CLEAR); | |
2470 | ||
2471 | return 0; | |
2472 | } | |
2473 | ||
2474 | static int __devinit qe_ep_config(struct qe_udc *udc, unsigned char pipe_num) | |
2475 | { | |
2476 | struct qe_ep *ep = &udc->eps[pipe_num]; | |
2477 | ||
2478 | ep->udc = udc; | |
2479 | strcpy(ep->name, ep_name[pipe_num]); | |
2480 | ep->ep.name = ep_name[pipe_num]; | |
2481 | ||
2482 | ep->ep.ops = &qe_ep_ops; | |
2483 | ep->stopped = 1; | |
2484 | ep->ep.maxpacket = (unsigned short) ~0; | |
2485 | ep->desc = NULL; | |
2486 | ep->dir = 0xff; | |
2487 | ep->epnum = (u8)pipe_num; | |
2488 | ep->sent = 0; | |
2489 | ep->last = 0; | |
2490 | ep->init = 0; | |
2491 | ep->rxframe = NULL; | |
2492 | ep->txframe = NULL; | |
2493 | ep->tx_req = NULL; | |
2494 | ep->state = EP_STATE_IDLE; | |
2495 | ep->has_data = 0; | |
2496 | ||
2497 | /* the queue lists any req for this ep */ | |
2498 | INIT_LIST_HEAD(&ep->queue); | |
2499 | ||
2500 | /* gagdet.ep_list used for ep_autoconfig so no ep0*/ | |
2501 | if (pipe_num != 0) | |
2502 | list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); | |
2503 | ||
2504 | ep->gadget = &udc->gadget; | |
2505 | ||
2506 | return 0; | |
2507 | } | |
2508 | ||
2509 | /*----------------------------------------------------------------------- | |
2510 | * UDC device Driver operation functions * | |
2511 | *----------------------------------------------------------------------*/ | |
2512 | static void qe_udc_release(struct device *dev) | |
2513 | { | |
2514 | int i = 0; | |
2515 | ||
2516 | complete(udc_controller->done); | |
2517 | cpm_muram_free(cpm_muram_offset(udc_controller->ep_param[0])); | |
2518 | for (i = 0; i < USB_MAX_ENDPOINTS; i++) | |
2519 | udc_controller->ep_param[i] = NULL; | |
2520 | ||
2521 | kfree(udc_controller); | |
2522 | udc_controller = NULL; | |
2523 | } | |
2524 | ||
2525 | /* Driver probe functions */ | |
2dc11581 | 2526 | static int __devinit qe_udc_probe(struct platform_device *ofdev, |
3948f0e0 LY |
2527 | const struct of_device_id *match) |
2528 | { | |
3ed38802 | 2529 | struct device_node *np = ofdev->dev.of_node; |
3948f0e0 LY |
2530 | struct qe_ep *ep; |
2531 | unsigned int ret = 0; | |
2532 | unsigned int i; | |
2533 | const void *prop; | |
2534 | ||
2535 | prop = of_get_property(np, "mode", NULL); | |
2536 | if (!prop || strcmp(prop, "peripheral")) | |
2537 | return -ENODEV; | |
2538 | ||
2539 | /* Initialize the udc structure including QH member and other member */ | |
2540 | udc_controller = qe_udc_config(ofdev); | |
2541 | if (!udc_controller) { | |
cd40c4c4 | 2542 | dev_err(&ofdev->dev, "failed to initialize\n"); |
3948f0e0 LY |
2543 | return -ENOMEM; |
2544 | } | |
2545 | ||
2546 | udc_controller->soc_type = (unsigned long)match->data; | |
2547 | udc_controller->usb_regs = of_iomap(np, 0); | |
2548 | if (!udc_controller->usb_regs) { | |
2549 | ret = -ENOMEM; | |
2550 | goto err1; | |
2551 | } | |
2552 | ||
2553 | /* initialize usb hw reg except for regs for EP, | |
2554 | * leave usbintr reg untouched*/ | |
2555 | qe_udc_reg_init(udc_controller); | |
2556 | ||
2557 | /* here comes the stand operations for probe | |
2558 | * set the qe_udc->gadget.xxx */ | |
2559 | udc_controller->gadget.ops = &qe_gadget_ops; | |
2560 | ||
2561 | /* gadget.ep0 is a pointer */ | |
2562 | udc_controller->gadget.ep0 = &udc_controller->eps[0].ep; | |
2563 | ||
2564 | INIT_LIST_HEAD(&udc_controller->gadget.ep_list); | |
2565 | ||
2566 | /* modify in register gadget process */ | |
2567 | udc_controller->gadget.speed = USB_SPEED_UNKNOWN; | |
2568 | ||
2569 | /* name: Identifies the controller hardware type. */ | |
2570 | udc_controller->gadget.name = driver_name; | |
2571 | ||
2572 | device_initialize(&udc_controller->gadget.dev); | |
2573 | ||
c682b170 | 2574 | dev_set_name(&udc_controller->gadget.dev, "gadget"); |
3948f0e0 LY |
2575 | |
2576 | udc_controller->gadget.dev.release = qe_udc_release; | |
2577 | udc_controller->gadget.dev.parent = &ofdev->dev; | |
2578 | ||
928dfa6c | 2579 | /* initialize qe_ep struct */ |
3948f0e0 | 2580 | for (i = 0; i < USB_MAX_ENDPOINTS ; i++) { |
928dfa6c | 2581 | /* because the ep type isn't decide here so |
3948f0e0 LY |
2582 | * qe_ep_init() should be called in ep_enable() */ |
2583 | ||
2584 | /* setup the qe_ep struct and link ep.ep.list | |
2585 | * into gadget.ep_list */ | |
2586 | qe_ep_config(udc_controller, (unsigned char)i); | |
2587 | } | |
2588 | ||
2589 | /* ep0 initialization in here */ | |
2590 | ret = qe_ep_init(udc_controller, 0, &qe_ep0_desc); | |
2591 | if (ret) | |
2592 | goto err2; | |
2593 | ||
928dfa6c | 2594 | /* create a buf for ZLP send, need to remain zeroed */ |
3948f0e0 LY |
2595 | udc_controller->nullbuf = kzalloc(256, GFP_KERNEL); |
2596 | if (udc_controller->nullbuf == NULL) { | |
cd40c4c4 | 2597 | dev_err(udc_controller->dev, "cannot alloc nullbuf\n"); |
3948f0e0 LY |
2598 | ret = -ENOMEM; |
2599 | goto err3; | |
2600 | } | |
2601 | ||
928dfa6c LY |
2602 | /* buffer for data of get_status request */ |
2603 | udc_controller->statusbuf = kzalloc(2, GFP_KERNEL); | |
2604 | if (udc_controller->statusbuf == NULL) { | |
2605 | ret = -ENOMEM; | |
2606 | goto err4; | |
2607 | } | |
2608 | ||
3948f0e0 LY |
2609 | udc_controller->nullp = virt_to_phys((void *)udc_controller->nullbuf); |
2610 | if (udc_controller->nullp == DMA_ADDR_INVALID) { | |
2611 | udc_controller->nullp = dma_map_single( | |
2612 | udc_controller->gadget.dev.parent, | |
2613 | udc_controller->nullbuf, | |
2614 | 256, | |
2615 | DMA_TO_DEVICE); | |
2616 | udc_controller->nullmap = 1; | |
2617 | } else { | |
2618 | dma_sync_single_for_device(udc_controller->gadget.dev.parent, | |
2619 | udc_controller->nullp, 256, | |
2620 | DMA_TO_DEVICE); | |
2621 | } | |
2622 | ||
2623 | tasklet_init(&udc_controller->rx_tasklet, ep_rx_tasklet, | |
2624 | (unsigned long)udc_controller); | |
2625 | /* request irq and disable DR */ | |
2626 | udc_controller->usb_irq = irq_of_parse_and_map(np, 0); | |
94f341db AV |
2627 | if (!udc_controller->usb_irq) { |
2628 | ret = -EINVAL; | |
2629 | goto err_noirq; | |
2630 | } | |
3948f0e0 LY |
2631 | |
2632 | ret = request_irq(udc_controller->usb_irq, qe_udc_irq, 0, | |
2633 | driver_name, udc_controller); | |
2634 | if (ret) { | |
2635 | dev_err(udc_controller->dev, "cannot request irq %d err %d \n", | |
2636 | udc_controller->usb_irq, ret); | |
928dfa6c | 2637 | goto err5; |
3948f0e0 LY |
2638 | } |
2639 | ||
2640 | ret = device_add(&udc_controller->gadget.dev); | |
2641 | if (ret) | |
928dfa6c | 2642 | goto err6; |
3948f0e0 LY |
2643 | |
2644 | dev_info(udc_controller->dev, | |
928dfa6c LY |
2645 | "%s USB controller initialized as device\n", |
2646 | (udc_controller->soc_type == PORT_QE) ? "QE" : "CPM"); | |
3948f0e0 LY |
2647 | return 0; |
2648 | ||
928dfa6c | 2649 | err6: |
3948f0e0 | 2650 | free_irq(udc_controller->usb_irq, udc_controller); |
928dfa6c | 2651 | err5: |
94f341db AV |
2652 | irq_dispose_mapping(udc_controller->usb_irq); |
2653 | err_noirq: | |
3948f0e0 LY |
2654 | if (udc_controller->nullmap) { |
2655 | dma_unmap_single(udc_controller->gadget.dev.parent, | |
2656 | udc_controller->nullp, 256, | |
2657 | DMA_TO_DEVICE); | |
2658 | udc_controller->nullp = DMA_ADDR_INVALID; | |
2659 | } else { | |
2660 | dma_sync_single_for_cpu(udc_controller->gadget.dev.parent, | |
2661 | udc_controller->nullp, 256, | |
2662 | DMA_TO_DEVICE); | |
2663 | } | |
928dfa6c LY |
2664 | kfree(udc_controller->statusbuf); |
2665 | err4: | |
3948f0e0 LY |
2666 | kfree(udc_controller->nullbuf); |
2667 | err3: | |
2668 | ep = &udc_controller->eps[0]; | |
2669 | cpm_muram_free(cpm_muram_offset(ep->rxbase)); | |
2670 | kfree(ep->rxframe); | |
2671 | kfree(ep->rxbuffer); | |
2672 | kfree(ep->txframe); | |
2673 | err2: | |
2674 | iounmap(udc_controller->usb_regs); | |
2675 | err1: | |
2676 | kfree(udc_controller); | |
94f341db | 2677 | udc_controller = NULL; |
3948f0e0 LY |
2678 | return ret; |
2679 | } | |
2680 | ||
2681 | #ifdef CONFIG_PM | |
2dc11581 | 2682 | static int qe_udc_suspend(struct platform_device *dev, pm_message_t state) |
3948f0e0 LY |
2683 | { |
2684 | return -ENOTSUPP; | |
2685 | } | |
2686 | ||
2dc11581 | 2687 | static int qe_udc_resume(struct platform_device *dev) |
3948f0e0 LY |
2688 | { |
2689 | return -ENOTSUPP; | |
2690 | } | |
2691 | #endif | |
2692 | ||
2dc11581 | 2693 | static int __devexit qe_udc_remove(struct platform_device *ofdev) |
3948f0e0 LY |
2694 | { |
2695 | struct qe_ep *ep; | |
2696 | unsigned int size; | |
2697 | ||
2698 | DECLARE_COMPLETION(done); | |
2699 | ||
2700 | if (!udc_controller) | |
2701 | return -ENODEV; | |
2702 | ||
2703 | udc_controller->done = &done; | |
2704 | tasklet_disable(&udc_controller->rx_tasklet); | |
2705 | ||
2706 | if (udc_controller->nullmap) { | |
2707 | dma_unmap_single(udc_controller->gadget.dev.parent, | |
2708 | udc_controller->nullp, 256, | |
2709 | DMA_TO_DEVICE); | |
2710 | udc_controller->nullp = DMA_ADDR_INVALID; | |
2711 | } else { | |
2712 | dma_sync_single_for_cpu(udc_controller->gadget.dev.parent, | |
2713 | udc_controller->nullp, 256, | |
2714 | DMA_TO_DEVICE); | |
2715 | } | |
928dfa6c | 2716 | kfree(udc_controller->statusbuf); |
3948f0e0 LY |
2717 | kfree(udc_controller->nullbuf); |
2718 | ||
2719 | ep = &udc_controller->eps[0]; | |
2720 | cpm_muram_free(cpm_muram_offset(ep->rxbase)); | |
2721 | size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (USB_BDRING_LEN + 1); | |
2722 | ||
2723 | kfree(ep->rxframe); | |
2724 | if (ep->rxbufmap) { | |
2725 | dma_unmap_single(udc_controller->gadget.dev.parent, | |
2726 | ep->rxbuf_d, size, | |
2727 | DMA_FROM_DEVICE); | |
2728 | ep->rxbuf_d = DMA_ADDR_INVALID; | |
2729 | } else { | |
2730 | dma_sync_single_for_cpu(udc_controller->gadget.dev.parent, | |
2731 | ep->rxbuf_d, size, | |
2732 | DMA_FROM_DEVICE); | |
2733 | } | |
2734 | ||
2735 | kfree(ep->rxbuffer); | |
2736 | kfree(ep->txframe); | |
2737 | ||
2738 | free_irq(udc_controller->usb_irq, udc_controller); | |
94f341db | 2739 | irq_dispose_mapping(udc_controller->usb_irq); |
3948f0e0 LY |
2740 | |
2741 | tasklet_kill(&udc_controller->rx_tasklet); | |
2742 | ||
2743 | iounmap(udc_controller->usb_regs); | |
2744 | ||
2745 | device_unregister(&udc_controller->gadget.dev); | |
2746 | /* wait for release() of gadget.dev to free udc */ | |
2747 | wait_for_completion(&done); | |
2748 | ||
2749 | return 0; | |
2750 | } | |
2751 | ||
2752 | /*-------------------------------------------------------------------------*/ | |
07824d3d | 2753 | static const struct of_device_id qe_udc_match[] __devinitconst = { |
04c4ab17 AV |
2754 | { |
2755 | .compatible = "fsl,mpc8323-qe-usb", | |
2756 | .data = (void *)PORT_QE, | |
2757 | }, | |
3948f0e0 LY |
2758 | { |
2759 | .compatible = "fsl,mpc8360-qe-usb", | |
2760 | .data = (void *)PORT_QE, | |
2761 | }, | |
2762 | { | |
2763 | .compatible = "fsl,mpc8272-cpm-usb", | |
2764 | .data = (void *)PORT_CPM, | |
2765 | }, | |
2766 | {}, | |
2767 | }; | |
2768 | ||
2769 | MODULE_DEVICE_TABLE(of, qe_udc_match); | |
2770 | ||
2771 | static struct of_platform_driver udc_driver = { | |
4018294b GL |
2772 | .driver = { |
2773 | .name = (char *)driver_name, | |
2774 | .owner = THIS_MODULE, | |
2775 | .of_match_table = qe_udc_match, | |
2776 | }, | |
3948f0e0 LY |
2777 | .probe = qe_udc_probe, |
2778 | .remove = __devexit_p(qe_udc_remove), | |
2779 | #ifdef CONFIG_PM | |
2780 | .suspend = qe_udc_suspend, | |
2781 | .resume = qe_udc_resume, | |
2782 | #endif | |
2783 | }; | |
2784 | ||
2785 | static int __init qe_udc_init(void) | |
2786 | { | |
2787 | printk(KERN_INFO "%s: %s, %s\n", driver_name, driver_desc, | |
2788 | DRIVER_VERSION); | |
2789 | return of_register_platform_driver(&udc_driver); | |
2790 | } | |
2791 | ||
2792 | static void __exit qe_udc_exit(void) | |
2793 | { | |
2794 | of_unregister_platform_driver(&udc_driver); | |
2795 | } | |
2796 | ||
2797 | module_init(qe_udc_init); | |
2798 | module_exit(qe_udc_exit); | |
2799 | ||
2800 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2801 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
2802 | MODULE_LICENSE("GPL"); | |
2803 |