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