Commit | Line | Data |
---|---|---|
4808a1c0 OK |
1 | /* |
2 | * ISP116x HCD (Host Controller Driver) for USB. | |
3 | * | |
4 | * Derived from the SL811 HCD, rewritten for ISP116x. | |
5 | * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee> | |
6 | * | |
7 | * Portions: | |
8 | * Copyright (C) 2004 Psion Teklogix (for NetBook PRO) | |
9 | * Copyright (C) 2004 David Brownell | |
10 | * | |
11 | * Periodic scheduling is based on Roman's OHCI code | |
12 | * Copyright (C) 1999 Roman Weissgaerber | |
13 | * | |
14 | */ | |
15 | ||
16 | /* | |
17 | * The driver basically works. A number of people have used it with a range | |
18 | * of devices. | |
19 | * | |
17f8bb73 | 20 | * The driver passes all usbtests 1-14. |
4808a1c0 OK |
21 | * |
22 | * Suspending/resuming of root hub via sysfs works. Remote wakeup works too. | |
23 | * And suspending/resuming of platform device works too. Suspend/resume | |
24 | * via HCD operations vector is not implemented. | |
25 | * | |
26 | * Iso transfer support is not implemented. Adding this would include | |
27 | * implementing recovery from the failure to service the processed ITL | |
28 | * fifo ram in time, which will involve chip reset. | |
29 | * | |
30 | * TODO: | |
31 | + More testing of suspend/resume. | |
32 | */ | |
33 | ||
34 | /* | |
35 | ISP116x chips require certain delays between accesses to its | |
36 | registers. The following timing options exist. | |
37 | ||
38 | 1. Configure your memory controller (the best) | |
39 | 2. Implement platform-specific delay function possibly | |
40 | combined with configuring the memory controller; see | |
41 | include/linux/usb-isp116x.h for more info. Some broken | |
42 | memory controllers line LH7A400 SMC need this. Also, | |
43 | uncomment for that to work the following | |
44 | USE_PLATFORM_DELAY macro. | |
45 | 3. Use ndelay (easiest, poorest). For that, uncomment | |
46 | the following USE_NDELAY macro. | |
47 | */ | |
48 | #define USE_PLATFORM_DELAY | |
49 | //#define USE_NDELAY | |
50 | ||
51 | //#define DEBUG | |
52 | //#define VERBOSE | |
53 | /* Transfer descriptors. See dump_ptd() for printout format */ | |
54 | //#define PTD_TRACE | |
55 | /* enqueuing/finishing log of urbs */ | |
56 | //#define URB_TRACE | |
57 | ||
4808a1c0 | 58 | #include <linux/module.h> |
4808a1c0 | 59 | #include <linux/delay.h> |
959eea21 OK |
60 | #include <linux/debugfs.h> |
61 | #include <linux/seq_file.h> | |
4808a1c0 OK |
62 | #include <linux/errno.h> |
63 | #include <linux/init.h> | |
64 | #include <linux/list.h> | |
4808a1c0 | 65 | #include <linux/usb.h> |
325a4af6 | 66 | #include <linux/usb/isp116x.h> |
d052d1be | 67 | #include <linux/platform_device.h> |
4808a1c0 OK |
68 | |
69 | #include <asm/io.h> | |
70 | #include <asm/irq.h> | |
71 | #include <asm/system.h> | |
72 | #include <asm/byteorder.h> | |
73 | ||
4808a1c0 OK |
74 | #include "../core/hcd.h" |
75 | #include "isp116x.h" | |
76 | ||
959eea21 | 77 | #define DRIVER_VERSION "03 Nov 2005" |
4808a1c0 OK |
78 | #define DRIVER_DESC "ISP116x USB Host Controller Driver" |
79 | ||
80 | MODULE_DESCRIPTION(DRIVER_DESC); | |
81 | MODULE_LICENSE("GPL"); | |
82 | ||
83 | static const char hcd_name[] = "isp116x-hcd"; | |
84 | ||
85 | /*-----------------------------------------------------------------*/ | |
86 | ||
87 | /* | |
88 | Write len bytes to fifo, pad till 32-bit boundary | |
89 | */ | |
90 | static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len) | |
91 | { | |
92 | u8 *dp = (u8 *) buf; | |
93 | u16 *dp2 = (u16 *) buf; | |
94 | u16 w; | |
95 | int quot = len % 4; | |
96 | ||
97 | if ((unsigned long)dp2 & 1) { | |
98 | /* not aligned */ | |
99 | for (; len > 1; len -= 2) { | |
100 | w = *dp++; | |
101 | w |= *dp++ << 8; | |
102 | isp116x_raw_write_data16(isp116x, w); | |
103 | } | |
104 | if (len) | |
105 | isp116x_write_data16(isp116x, (u16) * dp); | |
106 | } else { | |
107 | /* aligned */ | |
108 | for (; len > 1; len -= 2) | |
109 | isp116x_raw_write_data16(isp116x, *dp2++); | |
110 | if (len) | |
111 | isp116x_write_data16(isp116x, 0xff & *((u8 *) dp2)); | |
112 | } | |
113 | if (quot == 1 || quot == 2) | |
114 | isp116x_raw_write_data16(isp116x, 0); | |
115 | } | |
116 | ||
117 | /* | |
118 | Read len bytes from fifo and then read till 32-bit boundary. | |
119 | */ | |
120 | static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len) | |
121 | { | |
122 | u8 *dp = (u8 *) buf; | |
123 | u16 *dp2 = (u16 *) buf; | |
124 | u16 w; | |
125 | int quot = len % 4; | |
126 | ||
127 | if ((unsigned long)dp2 & 1) { | |
128 | /* not aligned */ | |
129 | for (; len > 1; len -= 2) { | |
130 | w = isp116x_raw_read_data16(isp116x); | |
131 | *dp++ = w & 0xff; | |
132 | *dp++ = (w >> 8) & 0xff; | |
133 | } | |
134 | if (len) | |
135 | *dp = 0xff & isp116x_read_data16(isp116x); | |
136 | } else { | |
137 | /* aligned */ | |
138 | for (; len > 1; len -= 2) | |
139 | *dp2++ = isp116x_raw_read_data16(isp116x); | |
140 | if (len) | |
141 | *(u8 *) dp2 = 0xff & isp116x_read_data16(isp116x); | |
142 | } | |
143 | if (quot == 1 || quot == 2) | |
144 | isp116x_raw_read_data16(isp116x); | |
145 | } | |
146 | ||
147 | /* | |
148 | Write ptd's and data for scheduled transfers into | |
149 | the fifo ram. Fifo must be empty and ready. | |
150 | */ | |
151 | static void pack_fifo(struct isp116x *isp116x) | |
152 | { | |
153 | struct isp116x_ep *ep; | |
154 | struct ptd *ptd; | |
155 | int buflen = isp116x->atl_last_dir == PTD_DIR_IN | |
156 | ? isp116x->atl_bufshrt : isp116x->atl_buflen; | |
4808a1c0 OK |
157 | |
158 | isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT); | |
159 | isp116x_write_reg16(isp116x, HCXFERCTR, buflen); | |
160 | isp116x_write_addr(isp116x, HCATLPORT | ISP116x_WRITE_OFFSET); | |
161 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
4808a1c0 OK |
162 | ptd = &ep->ptd; |
163 | dump_ptd(ptd); | |
164 | dump_ptd_out_data(ptd, ep->data); | |
165 | isp116x_write_data16(isp116x, ptd->count); | |
166 | isp116x_write_data16(isp116x, ptd->mps); | |
167 | isp116x_write_data16(isp116x, ptd->len); | |
168 | isp116x_write_data16(isp116x, ptd->faddr); | |
169 | buflen -= sizeof(struct ptd); | |
170 | /* Skip writing data for last IN PTD */ | |
171 | if (ep->active || (isp116x->atl_last_dir != PTD_DIR_IN)) { | |
172 | write_ptddata_to_fifo(isp116x, ep->data, ep->length); | |
173 | buflen -= ALIGN(ep->length, 4); | |
174 | } | |
175 | } | |
176 | BUG_ON(buflen); | |
177 | } | |
178 | ||
179 | /* | |
180 | Read the processed ptd's and data from fifo ram back to | |
181 | URBs' buffers. Fifo must be full and done | |
182 | */ | |
183 | static void unpack_fifo(struct isp116x *isp116x) | |
184 | { | |
185 | struct isp116x_ep *ep; | |
186 | struct ptd *ptd; | |
187 | int buflen = isp116x->atl_last_dir == PTD_DIR_IN | |
188 | ? isp116x->atl_buflen : isp116x->atl_bufshrt; | |
189 | ||
190 | isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT); | |
191 | isp116x_write_reg16(isp116x, HCXFERCTR, buflen); | |
192 | isp116x_write_addr(isp116x, HCATLPORT); | |
193 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
194 | ptd = &ep->ptd; | |
195 | ptd->count = isp116x_read_data16(isp116x); | |
196 | ptd->mps = isp116x_read_data16(isp116x); | |
197 | ptd->len = isp116x_read_data16(isp116x); | |
198 | ptd->faddr = isp116x_read_data16(isp116x); | |
199 | buflen -= sizeof(struct ptd); | |
200 | /* Skip reading data for last Setup or Out PTD */ | |
201 | if (ep->active || (isp116x->atl_last_dir == PTD_DIR_IN)) { | |
202 | read_ptddata_from_fifo(isp116x, ep->data, ep->length); | |
203 | buflen -= ALIGN(ep->length, 4); | |
204 | } | |
205 | dump_ptd(ptd); | |
206 | dump_ptd_in_data(ptd, ep->data); | |
207 | } | |
208 | BUG_ON(buflen); | |
209 | } | |
210 | ||
211 | /*---------------------------------------------------------------*/ | |
212 | ||
213 | /* | |
214 | Set up PTD's. | |
215 | */ | |
216 | static void preproc_atl_queue(struct isp116x *isp116x) | |
217 | { | |
218 | struct isp116x_ep *ep; | |
219 | struct urb *urb; | |
220 | struct ptd *ptd; | |
f10eff26 | 221 | u16 len; |
4808a1c0 OK |
222 | |
223 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
f10eff26 OK |
224 | u16 toggle = 0, dir = PTD_DIR_SETUP; |
225 | ||
4808a1c0 OK |
226 | BUG_ON(list_empty(&ep->hep->urb_list)); |
227 | urb = container_of(ep->hep->urb_list.next, | |
228 | struct urb, urb_list); | |
229 | ptd = &ep->ptd; | |
230 | len = ep->length; | |
4808a1c0 OK |
231 | ep->data = (unsigned char *)urb->transfer_buffer |
232 | + urb->actual_length; | |
233 | ||
234 | switch (ep->nextpid) { | |
235 | case USB_PID_IN: | |
236 | toggle = usb_gettoggle(urb->dev, ep->epnum, 0); | |
237 | dir = PTD_DIR_IN; | |
238 | break; | |
239 | case USB_PID_OUT: | |
240 | toggle = usb_gettoggle(urb->dev, ep->epnum, 1); | |
241 | dir = PTD_DIR_OUT; | |
242 | break; | |
243 | case USB_PID_SETUP: | |
4808a1c0 OK |
244 | len = sizeof(struct usb_ctrlrequest); |
245 | ep->data = urb->setup_packet; | |
246 | break; | |
247 | case USB_PID_ACK: | |
248 | toggle = 1; | |
249 | len = 0; | |
250 | dir = (urb->transfer_buffer_length | |
251 | && usb_pipein(urb->pipe)) | |
252 | ? PTD_DIR_OUT : PTD_DIR_IN; | |
253 | break; | |
254 | default: | |
4808a1c0 OK |
255 | ERR("%s %d: ep->nextpid %d\n", __func__, __LINE__, |
256 | ep->nextpid); | |
17f8bb73 | 257 | BUG(); |
4808a1c0 OK |
258 | } |
259 | ||
260 | ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); | |
261 | ptd->mps = PTD_MPS(ep->maxpacket) | |
262 | | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | |
263 | | PTD_EP(ep->epnum); | |
264 | ptd->len = PTD_LEN(len) | PTD_DIR(dir); | |
265 | ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); | |
4808a1c0 OK |
266 | if (!ep->active) { |
267 | ptd->mps |= PTD_LAST_MSK; | |
268 | isp116x->atl_last_dir = dir; | |
269 | } | |
270 | isp116x->atl_bufshrt = sizeof(struct ptd) + isp116x->atl_buflen; | |
271 | isp116x->atl_buflen = isp116x->atl_bufshrt + ALIGN(len, 4); | |
272 | } | |
273 | } | |
274 | ||
1b4cd43b AS |
275 | /* |
276 | Take done or failed requests out of schedule. Give back | |
277 | processed urbs. | |
278 | */ | |
279 | static void finish_request(struct isp116x *isp116x, struct isp116x_ep *ep, | |
280 | struct urb *urb) | |
281 | __releases(isp116x->lock) __acquires(isp116x->lock) | |
282 | { | |
283 | unsigned i; | |
284 | ||
285 | urb->hcpriv = NULL; | |
286 | ep->error_count = 0; | |
287 | ||
288 | if (usb_pipecontrol(urb->pipe)) | |
289 | ep->nextpid = USB_PID_SETUP; | |
290 | ||
291 | urb_dbg(urb, "Finish"); | |
292 | ||
293 | spin_unlock(&isp116x->lock); | |
294 | usb_hcd_giveback_urb(isp116x_to_hcd(isp116x), urb); | |
295 | spin_lock(&isp116x->lock); | |
296 | ||
297 | /* take idle endpoints out of the schedule */ | |
298 | if (!list_empty(&ep->hep->urb_list)) | |
299 | return; | |
300 | ||
301 | /* async deschedule */ | |
302 | if (!list_empty(&ep->schedule)) { | |
303 | list_del_init(&ep->schedule); | |
304 | return; | |
305 | } | |
306 | ||
307 | /* periodic deschedule */ | |
308 | DBG("deschedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); | |
309 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { | |
310 | struct isp116x_ep *temp; | |
311 | struct isp116x_ep **prev = &isp116x->periodic[i]; | |
312 | ||
313 | while (*prev && ((temp = *prev) != ep)) | |
314 | prev = &temp->next; | |
315 | if (*prev) | |
316 | *prev = ep->next; | |
317 | isp116x->load[i] -= ep->load; | |
318 | } | |
319 | ep->branch = PERIODIC_SIZE; | |
320 | isp116x_to_hcd(isp116x)->self.bandwidth_allocated -= | |
321 | ep->load / ep->period; | |
322 | ||
323 | /* switch irq type? */ | |
324 | if (!--isp116x->periodic_count) { | |
325 | isp116x->irqenb &= ~HCuPINT_SOF; | |
326 | isp116x->irqenb |= HCuPINT_ATL; | |
327 | } | |
328 | } | |
329 | ||
4808a1c0 OK |
330 | /* |
331 | Analyze transfer results, handle partial transfers and errors | |
332 | */ | |
333 | static void postproc_atl_queue(struct isp116x *isp116x) | |
334 | { | |
335 | struct isp116x_ep *ep; | |
336 | struct urb *urb; | |
337 | struct usb_device *udev; | |
338 | struct ptd *ptd; | |
339 | int short_not_ok; | |
1b4cd43b | 340 | int status; |
4808a1c0 OK |
341 | u8 cc; |
342 | ||
343 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
344 | BUG_ON(list_empty(&ep->hep->urb_list)); | |
345 | urb = | |
346 | container_of(ep->hep->urb_list.next, struct urb, urb_list); | |
347 | udev = urb->dev; | |
348 | ptd = &ep->ptd; | |
349 | cc = PTD_GET_CC(ptd); | |
4808a1c0 | 350 | short_not_ok = 1; |
1b4cd43b | 351 | status = -EINPROGRESS; |
4808a1c0 OK |
352 | |
353 | /* Data underrun is special. For allowed underrun | |
354 | we clear the error and continue as normal. For | |
355 | forbidden underrun we finish the DATA stage | |
356 | immediately while for control transfer, | |
357 | we do a STATUS stage. */ | |
358 | if (cc == TD_DATAUNDERRUN) { | |
1b4cd43b AS |
359 | if (!(urb->transfer_flags & URB_SHORT_NOT_OK) || |
360 | usb_pipecontrol(urb->pipe)) { | |
361 | DBG("Allowed or control data underrun\n"); | |
4808a1c0 OK |
362 | cc = TD_CC_NOERROR; |
363 | short_not_ok = 0; | |
364 | } else { | |
365 | ep->error_count = 1; | |
1b4cd43b AS |
366 | usb_settoggle(udev, ep->epnum, |
367 | ep->nextpid == USB_PID_OUT, | |
368 | PTD_GET_TOGGLE(ptd)); | |
e9b765de | 369 | urb->actual_length += PTD_GET_COUNT(ptd); |
1b4cd43b AS |
370 | status = cc_to_error[TD_DATAUNDERRUN]; |
371 | goto done; | |
4808a1c0 OK |
372 | } |
373 | } | |
4808a1c0 OK |
374 | |
375 | if (cc != TD_CC_NOERROR && cc != TD_NOTACCESSED | |
376 | && (++ep->error_count >= 3 || cc == TD_CC_STALL | |
377 | || cc == TD_DATAOVERRUN)) { | |
1b4cd43b | 378 | status = cc_to_error[cc]; |
4808a1c0 OK |
379 | if (ep->nextpid == USB_PID_ACK) |
380 | ep->nextpid = 0; | |
1b4cd43b | 381 | goto done; |
4808a1c0 OK |
382 | } |
383 | /* According to usb spec, zero-length Int transfer signals | |
384 | finishing of the urb. Hey, does this apply only | |
385 | for IN endpoints? */ | |
386 | if (usb_pipeint(urb->pipe) && !PTD_GET_LEN(ptd)) { | |
1b4cd43b AS |
387 | status = 0; |
388 | goto done; | |
4808a1c0 OK |
389 | } |
390 | ||
391 | /* Relax after previously failed, but later succeeded | |
392 | or correctly NAK'ed retransmission attempt */ | |
393 | if (ep->error_count | |
394 | && (cc == TD_CC_NOERROR || cc == TD_NOTACCESSED)) | |
395 | ep->error_count = 0; | |
396 | ||
397 | /* Take into account idiosyncracies of the isp116x chip | |
398 | regarding toggle bit for failed transfers */ | |
399 | if (ep->nextpid == USB_PID_OUT) | |
400 | usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd) | |
401 | ^ (ep->error_count > 0)); | |
402 | else if (ep->nextpid == USB_PID_IN) | |
403 | usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd) | |
404 | ^ (ep->error_count > 0)); | |
405 | ||
406 | switch (ep->nextpid) { | |
407 | case USB_PID_IN: | |
408 | case USB_PID_OUT: | |
409 | urb->actual_length += PTD_GET_COUNT(ptd); | |
410 | if (PTD_GET_ACTIVE(ptd) | |
411 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
412 | break; | |
413 | if (urb->transfer_buffer_length != urb->actual_length) { | |
414 | if (short_not_ok) | |
415 | break; | |
416 | } else { | |
417 | if (urb->transfer_flags & URB_ZERO_PACKET | |
418 | && ep->nextpid == USB_PID_OUT | |
419 | && !(PTD_GET_COUNT(ptd) % ep->maxpacket)) { | |
420 | DBG("Zero packet requested\n"); | |
421 | break; | |
422 | } | |
423 | } | |
424 | /* All data for this URB is transferred, let's finish */ | |
425 | if (usb_pipecontrol(urb->pipe)) | |
426 | ep->nextpid = USB_PID_ACK; | |
1b4cd43b AS |
427 | else |
428 | status = 0; | |
4808a1c0 OK |
429 | break; |
430 | case USB_PID_SETUP: | |
431 | if (PTD_GET_ACTIVE(ptd) | |
432 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
433 | break; | |
434 | if (urb->transfer_buffer_length == urb->actual_length) | |
435 | ep->nextpid = USB_PID_ACK; | |
436 | else if (usb_pipeout(urb->pipe)) { | |
437 | usb_settoggle(udev, 0, 1, 1); | |
438 | ep->nextpid = USB_PID_OUT; | |
439 | } else { | |
440 | usb_settoggle(udev, 0, 0, 1); | |
441 | ep->nextpid = USB_PID_IN; | |
442 | } | |
443 | break; | |
444 | case USB_PID_ACK: | |
445 | if (PTD_GET_ACTIVE(ptd) | |
446 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
447 | break; | |
1b4cd43b AS |
448 | if ((urb->transfer_flags & URB_SHORT_NOT_OK) && |
449 | urb->actual_length < | |
450 | urb->transfer_buffer_length) | |
451 | status = -EREMOTEIO; | |
452 | else | |
453 | status = 0; | |
4808a1c0 OK |
454 | ep->nextpid = 0; |
455 | break; | |
456 | default: | |
959eea21 | 457 | BUG(); |
4808a1c0 | 458 | } |
4808a1c0 | 459 | |
1b4cd43b AS |
460 | done: |
461 | if (status != -EINPROGRESS) { | |
462 | spin_lock(&urb->lock); | |
463 | if (urb->status == -EINPROGRESS) | |
464 | urb->status = status; | |
465 | spin_unlock(&urb->lock); | |
466 | } | |
467 | if (urb->status != -EINPROGRESS) | |
468 | finish_request(isp116x, ep, urb); | |
4808a1c0 OK |
469 | } |
470 | } | |
471 | ||
472 | /* | |
473 | Scan transfer lists, schedule transfers, send data off | |
474 | to chip. | |
475 | */ | |
476 | static void start_atl_transfers(struct isp116x *isp116x) | |
477 | { | |
478 | struct isp116x_ep *last_ep = NULL, *ep; | |
479 | struct urb *urb; | |
480 | u16 load = 0; | |
481 | int len, index, speed, byte_time; | |
482 | ||
483 | if (atomic_read(&isp116x->atl_finishing)) | |
484 | return; | |
485 | ||
486 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) | |
487 | return; | |
488 | ||
489 | /* FIFO not empty? */ | |
490 | if (isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_FULL) | |
491 | return; | |
492 | ||
493 | isp116x->atl_active = NULL; | |
494 | isp116x->atl_buflen = isp116x->atl_bufshrt = 0; | |
495 | ||
496 | /* Schedule int transfers */ | |
497 | if (isp116x->periodic_count) { | |
498 | isp116x->fmindex = index = | |
499 | (isp116x->fmindex + 1) & (PERIODIC_SIZE - 1); | |
500 | if ((load = isp116x->load[index])) { | |
501 | /* Bring all int transfers for this frame | |
502 | into the active queue */ | |
503 | isp116x->atl_active = last_ep = | |
504 | isp116x->periodic[index]; | |
505 | while (last_ep->next) | |
506 | last_ep = (last_ep->active = last_ep->next); | |
507 | last_ep->active = NULL; | |
508 | } | |
509 | } | |
510 | ||
511 | /* Schedule control/bulk transfers */ | |
512 | list_for_each_entry(ep, &isp116x->async, schedule) { | |
513 | urb = container_of(ep->hep->urb_list.next, | |
514 | struct urb, urb_list); | |
515 | speed = urb->dev->speed; | |
516 | byte_time = speed == USB_SPEED_LOW | |
517 | ? BYTE_TIME_LOWSPEED : BYTE_TIME_FULLSPEED; | |
518 | ||
519 | if (ep->nextpid == USB_PID_SETUP) { | |
520 | len = sizeof(struct usb_ctrlrequest); | |
521 | } else if (ep->nextpid == USB_PID_ACK) { | |
522 | len = 0; | |
523 | } else { | |
524 | /* Find current free length ... */ | |
525 | len = (MAX_LOAD_LIMIT - load) / byte_time; | |
526 | ||
527 | /* ... then limit it to configured max size ... */ | |
528 | len = min(len, speed == USB_SPEED_LOW ? | |
529 | MAX_TRANSFER_SIZE_LOWSPEED : | |
530 | MAX_TRANSFER_SIZE_FULLSPEED); | |
531 | ||
532 | /* ... and finally cut to the multiple of MaxPacketSize, | |
533 | or to the real length if there's enough room. */ | |
534 | if (len < | |
535 | (urb->transfer_buffer_length - | |
536 | urb->actual_length)) { | |
537 | len -= len % ep->maxpacket; | |
538 | if (!len) | |
539 | continue; | |
540 | } else | |
541 | len = urb->transfer_buffer_length - | |
542 | urb->actual_length; | |
543 | BUG_ON(len < 0); | |
544 | } | |
545 | ||
546 | load += len * byte_time; | |
547 | if (load > MAX_LOAD_LIMIT) | |
548 | break; | |
549 | ||
550 | ep->active = NULL; | |
551 | ep->length = len; | |
552 | if (last_ep) | |
553 | last_ep->active = ep; | |
554 | else | |
555 | isp116x->atl_active = ep; | |
556 | last_ep = ep; | |
557 | } | |
558 | ||
559 | /* Avoid starving of endpoints */ | |
560 | if ((&isp116x->async)->next != (&isp116x->async)->prev) | |
561 | list_move(&isp116x->async, (&isp116x->async)->next); | |
562 | ||
563 | if (isp116x->atl_active) { | |
564 | preproc_atl_queue(isp116x); | |
565 | pack_fifo(isp116x); | |
566 | } | |
567 | } | |
568 | ||
569 | /* | |
570 | Finish the processed transfers | |
571 | */ | |
7d12e780 | 572 | static void finish_atl_transfers(struct isp116x *isp116x) |
4808a1c0 | 573 | { |
4808a1c0 OK |
574 | if (!isp116x->atl_active) |
575 | return; | |
576 | /* Fifo not ready? */ | |
577 | if (!(isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_DONE)) | |
578 | return; | |
579 | ||
580 | atomic_inc(&isp116x->atl_finishing); | |
581 | unpack_fifo(isp116x); | |
582 | postproc_atl_queue(isp116x); | |
4808a1c0 OK |
583 | atomic_dec(&isp116x->atl_finishing); |
584 | } | |
585 | ||
7d12e780 | 586 | static irqreturn_t isp116x_irq(struct usb_hcd *hcd) |
4808a1c0 OK |
587 | { |
588 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
589 | u16 irqstat; | |
590 | irqreturn_t ret = IRQ_NONE; | |
591 | ||
592 | spin_lock(&isp116x->lock); | |
593 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
594 | irqstat = isp116x_read_reg16(isp116x, HCuPINT); | |
595 | isp116x_write_reg16(isp116x, HCuPINT, irqstat); | |
596 | ||
597 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { | |
598 | ret = IRQ_HANDLED; | |
7d12e780 | 599 | finish_atl_transfers(isp116x); |
4808a1c0 OK |
600 | } |
601 | ||
602 | if (irqstat & HCuPINT_OPR) { | |
603 | u32 intstat = isp116x_read_reg32(isp116x, HCINTSTAT); | |
604 | isp116x_write_reg32(isp116x, HCINTSTAT, intstat); | |
605 | if (intstat & HCINT_UE) { | |
959eea21 OK |
606 | ERR("Unrecoverable error, HC is dead!\n"); |
607 | /* IRQ's are off, we do no DMA, | |
608 | perfectly ready to die ... */ | |
609 | hcd->state = HC_STATE_HALT; | |
610 | ret = IRQ_HANDLED; | |
611 | goto done; | |
4808a1c0 | 612 | } |
9a57116b OK |
613 | if (intstat & HCINT_RHSC) |
614 | /* When root hub or any of its ports is going | |
615 | to come out of suspend, it may take more | |
616 | than 10ms for status bits to stabilize. */ | |
617 | mod_timer(&hcd->rh_timer, jiffies | |
618 | + msecs_to_jiffies(20) + 1); | |
4808a1c0 OK |
619 | if (intstat & HCINT_RD) { |
620 | DBG("---- remote wakeup\n"); | |
ccdcf77a | 621 | usb_hcd_resume_root_hub(hcd); |
4808a1c0 OK |
622 | } |
623 | irqstat &= ~HCuPINT_OPR; | |
624 | ret = IRQ_HANDLED; | |
625 | } | |
626 | ||
627 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { | |
628 | start_atl_transfers(isp116x); | |
629 | } | |
630 | ||
631 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); | |
959eea21 | 632 | done: |
4808a1c0 OK |
633 | spin_unlock(&isp116x->lock); |
634 | return ret; | |
635 | } | |
636 | ||
637 | /*-----------------------------------------------------------------*/ | |
638 | ||
639 | /* usb 1.1 says max 90% of a frame is available for periodic transfers. | |
640 | * this driver doesn't promise that much since it's got to handle an | |
641 | * IRQ per packet; irq handling latencies also use up that time. | |
642 | */ | |
643 | ||
644 | /* out of 1000 us */ | |
645 | #define MAX_PERIODIC_LOAD 600 | |
646 | static int balance(struct isp116x *isp116x, u16 period, u16 load) | |
647 | { | |
648 | int i, branch = -ENOSPC; | |
649 | ||
650 | /* search for the least loaded schedule branch of that period | |
651 | which has enough bandwidth left unreserved. */ | |
652 | for (i = 0; i < period; i++) { | |
653 | if (branch < 0 || isp116x->load[branch] > isp116x->load[i]) { | |
654 | int j; | |
655 | ||
656 | for (j = i; j < PERIODIC_SIZE; j += period) { | |
657 | if ((isp116x->load[j] + load) | |
658 | > MAX_PERIODIC_LOAD) | |
659 | break; | |
660 | } | |
661 | if (j < PERIODIC_SIZE) | |
662 | continue; | |
663 | branch = i; | |
664 | } | |
665 | } | |
666 | return branch; | |
667 | } | |
668 | ||
669 | /* NB! ALL the code above this point runs with isp116x->lock | |
670 | held, irqs off | |
671 | */ | |
672 | ||
673 | /*-----------------------------------------------------------------*/ | |
674 | ||
675 | static int isp116x_urb_enqueue(struct usb_hcd *hcd, | |
676 | struct usb_host_endpoint *hep, struct urb *urb, | |
55016f10 | 677 | gfp_t mem_flags) |
4808a1c0 OK |
678 | { |
679 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
680 | struct usb_device *udev = urb->dev; | |
681 | unsigned int pipe = urb->pipe; | |
682 | int is_out = !usb_pipein(pipe); | |
683 | int type = usb_pipetype(pipe); | |
684 | int epnum = usb_pipeendpoint(pipe); | |
685 | struct isp116x_ep *ep = NULL; | |
686 | unsigned long flags; | |
687 | int i; | |
688 | int ret = 0; | |
689 | ||
690 | urb_dbg(urb, "Enqueue"); | |
691 | ||
692 | if (type == PIPE_ISOCHRONOUS) { | |
693 | ERR("Isochronous transfers not supported\n"); | |
694 | urb_dbg(urb, "Refused to enqueue"); | |
695 | return -ENXIO; | |
696 | } | |
697 | /* avoid all allocations within spinlocks: request or endpoint */ | |
698 | if (!hep->hcpriv) { | |
7b842b6e | 699 | ep = kzalloc(sizeof *ep, mem_flags); |
4808a1c0 OK |
700 | if (!ep) |
701 | return -ENOMEM; | |
702 | } | |
703 | ||
704 | spin_lock_irqsave(&isp116x->lock, flags); | |
705 | if (!HC_IS_RUNNING(hcd->state)) { | |
959eea21 | 706 | kfree(ep); |
4808a1c0 OK |
707 | ret = -ENODEV; |
708 | goto fail; | |
709 | } | |
710 | ||
711 | if (hep->hcpriv) | |
712 | ep = hep->hcpriv; | |
713 | else { | |
714 | INIT_LIST_HEAD(&ep->schedule); | |
6a8e87b2 | 715 | ep->udev = udev; |
4808a1c0 OK |
716 | ep->epnum = epnum; |
717 | ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); | |
718 | usb_settoggle(udev, epnum, is_out, 0); | |
719 | ||
720 | if (type == PIPE_CONTROL) { | |
721 | ep->nextpid = USB_PID_SETUP; | |
722 | } else if (is_out) { | |
723 | ep->nextpid = USB_PID_OUT; | |
724 | } else { | |
725 | ep->nextpid = USB_PID_IN; | |
726 | } | |
727 | ||
728 | if (urb->interval) { | |
729 | /* | |
730 | With INT URBs submitted, the driver works with SOF | |
731 | interrupt enabled and ATL interrupt disabled. After | |
732 | the PTDs are written to fifo ram, the chip starts | |
733 | fifo processing and usb transfers after the next | |
734 | SOF and continues until the transfers are finished | |
735 | (succeeded or failed) or the frame ends. Therefore, | |
736 | the transfers occur only in every second frame, | |
737 | while fifo reading/writing and data processing | |
738 | occur in every other second frame. */ | |
739 | if (urb->interval < 2) | |
740 | urb->interval = 2; | |
741 | if (urb->interval > 2 * PERIODIC_SIZE) | |
742 | urb->interval = 2 * PERIODIC_SIZE; | |
743 | ep->period = urb->interval >> 1; | |
744 | ep->branch = PERIODIC_SIZE; | |
745 | ep->load = usb_calc_bus_time(udev->speed, | |
746 | !is_out, | |
747 | (type == PIPE_ISOCHRONOUS), | |
748 | usb_maxpacket(udev, pipe, | |
749 | is_out)) / | |
750 | 1000; | |
751 | } | |
752 | hep->hcpriv = ep; | |
753 | ep->hep = hep; | |
754 | } | |
755 | ||
756 | /* maybe put endpoint into schedule */ | |
757 | switch (type) { | |
758 | case PIPE_CONTROL: | |
759 | case PIPE_BULK: | |
760 | if (list_empty(&ep->schedule)) | |
761 | list_add_tail(&ep->schedule, &isp116x->async); | |
762 | break; | |
763 | case PIPE_INTERRUPT: | |
764 | urb->interval = ep->period; | |
765 | ep->length = min((int)ep->maxpacket, | |
766 | urb->transfer_buffer_length); | |
767 | ||
768 | /* urb submitted for already existing endpoint */ | |
769 | if (ep->branch < PERIODIC_SIZE) | |
770 | break; | |
771 | ||
d5ce1379 | 772 | ep->branch = ret = balance(isp116x, ep->period, ep->load); |
4808a1c0 OK |
773 | if (ret < 0) |
774 | goto fail; | |
775 | ret = 0; | |
776 | ||
777 | urb->start_frame = (isp116x->fmindex & (PERIODIC_SIZE - 1)) | |
778 | + ep->branch; | |
779 | ||
780 | /* sort each schedule branch by period (slow before fast) | |
781 | to share the faster parts of the tree without needing | |
782 | dummy/placeholder nodes */ | |
783 | DBG("schedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); | |
784 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { | |
785 | struct isp116x_ep **prev = &isp116x->periodic[i]; | |
786 | struct isp116x_ep *here = *prev; | |
787 | ||
788 | while (here && ep != here) { | |
789 | if (ep->period > here->period) | |
790 | break; | |
791 | prev = &here->next; | |
792 | here = *prev; | |
793 | } | |
794 | if (ep != here) { | |
795 | ep->next = here; | |
796 | *prev = ep; | |
797 | } | |
798 | isp116x->load[i] += ep->load; | |
799 | } | |
800 | hcd->self.bandwidth_allocated += ep->load / ep->period; | |
801 | ||
802 | /* switch over to SOFint */ | |
803 | if (!isp116x->periodic_count++) { | |
804 | isp116x->irqenb &= ~HCuPINT_ATL; | |
805 | isp116x->irqenb |= HCuPINT_SOF; | |
806 | isp116x_write_reg16(isp116x, HCuPINTENB, | |
807 | isp116x->irqenb); | |
808 | } | |
809 | } | |
810 | ||
811 | /* in case of unlink-during-submit */ | |
4808a1c0 | 812 | if (urb->status != -EINPROGRESS) { |
7d12e780 | 813 | finish_request(isp116x, ep, urb); |
4808a1c0 OK |
814 | ret = 0; |
815 | goto fail; | |
816 | } | |
817 | urb->hcpriv = hep; | |
4808a1c0 OK |
818 | start_atl_transfers(isp116x); |
819 | ||
820 | fail: | |
821 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
822 | return ret; | |
823 | } | |
824 | ||
825 | /* | |
826 | Dequeue URBs. | |
827 | */ | |
828 | static int isp116x_urb_dequeue(struct usb_hcd *hcd, struct urb *urb) | |
829 | { | |
830 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
831 | struct usb_host_endpoint *hep; | |
832 | struct isp116x_ep *ep, *ep_act; | |
833 | unsigned long flags; | |
834 | ||
835 | spin_lock_irqsave(&isp116x->lock, flags); | |
836 | hep = urb->hcpriv; | |
837 | /* URB already unlinked (or never linked)? */ | |
838 | if (!hep) { | |
839 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
840 | return 0; | |
841 | } | |
842 | ep = hep->hcpriv; | |
843 | WARN_ON(hep != ep->hep); | |
844 | ||
845 | /* In front of queue? */ | |
846 | if (ep->hep->urb_list.next == &urb->urb_list) | |
847 | /* active? */ | |
848 | for (ep_act = isp116x->atl_active; ep_act; | |
849 | ep_act = ep_act->active) | |
850 | if (ep_act == ep) { | |
851 | VDBG("dequeue, urb %p active; wait for irq\n", | |
852 | urb); | |
853 | urb = NULL; | |
854 | break; | |
855 | } | |
856 | ||
857 | if (urb) | |
7d12e780 | 858 | finish_request(isp116x, ep, urb); |
4808a1c0 OK |
859 | |
860 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
861 | return 0; | |
862 | } | |
863 | ||
864 | static void isp116x_endpoint_disable(struct usb_hcd *hcd, | |
865 | struct usb_host_endpoint *hep) | |
866 | { | |
867 | int i; | |
959eea21 | 868 | struct isp116x_ep *ep = hep->hcpriv; |
4808a1c0 OK |
869 | |
870 | if (!ep) | |
871 | return; | |
872 | ||
873 | /* assume we'd just wait for the irq */ | |
874 | for (i = 0; i < 100 && !list_empty(&hep->urb_list); i++) | |
875 | msleep(3); | |
876 | if (!list_empty(&hep->urb_list)) | |
877 | WARN("ep %p not empty?\n", ep); | |
878 | ||
4808a1c0 OK |
879 | kfree(ep); |
880 | hep->hcpriv = NULL; | |
881 | } | |
882 | ||
883 | static int isp116x_get_frame(struct usb_hcd *hcd) | |
884 | { | |
885 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
886 | u32 fmnum; | |
887 | unsigned long flags; | |
888 | ||
889 | spin_lock_irqsave(&isp116x->lock, flags); | |
890 | fmnum = isp116x_read_reg32(isp116x, HCFMNUM); | |
891 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
892 | return (int)fmnum; | |
893 | } | |
894 | ||
4808a1c0 OK |
895 | /* |
896 | Adapted from ohci-hub.c. Currently we don't support autosuspend. | |
897 | */ | |
898 | static int isp116x_hub_status_data(struct usb_hcd *hcd, char *buf) | |
899 | { | |
900 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
901 | int ports, i, changed = 0; | |
9a57116b | 902 | unsigned long flags; |
4808a1c0 OK |
903 | |
904 | if (!HC_IS_RUNNING(hcd->state)) | |
905 | return -ESHUTDOWN; | |
906 | ||
9a57116b OK |
907 | /* Report no status change now, if we are scheduled to be |
908 | called later */ | |
909 | if (timer_pending(&hcd->rh_timer)) | |
910 | return 0; | |
4808a1c0 | 911 | |
9a57116b OK |
912 | ports = isp116x->rhdesca & RH_A_NDP; |
913 | spin_lock_irqsave(&isp116x->lock, flags); | |
914 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); | |
4808a1c0 OK |
915 | if (isp116x->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) |
916 | buf[0] = changed = 1; | |
917 | else | |
918 | buf[0] = 0; | |
919 | ||
920 | for (i = 0; i < ports; i++) { | |
9a57116b OK |
921 | u32 status = isp116x->rhport[i] = |
922 | isp116x_read_reg32(isp116x, i ? HCRHPORT2 : HCRHPORT1); | |
4808a1c0 OK |
923 | |
924 | if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | |
925 | | RH_PS_OCIC | RH_PS_PRSC)) { | |
926 | changed = 1; | |
927 | buf[0] |= 1 << (i + 1); | |
928 | continue; | |
929 | } | |
930 | } | |
9a57116b | 931 | spin_unlock_irqrestore(&isp116x->lock, flags); |
4808a1c0 OK |
932 | return changed; |
933 | } | |
934 | ||
935 | static void isp116x_hub_descriptor(struct isp116x *isp116x, | |
936 | struct usb_hub_descriptor *desc) | |
937 | { | |
938 | u32 reg = isp116x->rhdesca; | |
939 | ||
940 | desc->bDescriptorType = 0x29; | |
941 | desc->bDescLength = 9; | |
942 | desc->bHubContrCurrent = 0; | |
943 | desc->bNbrPorts = (u8) (reg & 0x3); | |
944 | /* Power switching, device type, overcurrent. */ | |
959eea21 | 945 | desc->wHubCharacteristics = cpu_to_le16((u16) ((reg >> 8) & 0x1f)); |
4808a1c0 OK |
946 | desc->bPwrOn2PwrGood = (u8) ((reg >> 24) & 0xff); |
947 | /* two bitmaps: ports removable, and legacy PortPwrCtrlMask */ | |
959eea21 | 948 | desc->bitmap[0] = 0; |
4808a1c0 OK |
949 | desc->bitmap[1] = ~0; |
950 | } | |
951 | ||
952 | /* Perform reset of a given port. | |
953 | It would be great to just start the reset and let the | |
954 | USB core to clear the reset in due time. However, | |
955 | root hub ports should be reset for at least 50 ms, while | |
956 | our chip stays in reset for about 10 ms. I.e., we must | |
957 | repeatedly reset it ourself here. | |
958 | */ | |
959 | static inline void root_port_reset(struct isp116x *isp116x, unsigned port) | |
960 | { | |
961 | u32 tmp; | |
962 | unsigned long flags, t; | |
963 | ||
964 | /* Root hub reset should be 50 ms, but some devices | |
965 | want it even longer. */ | |
966 | t = jiffies + msecs_to_jiffies(100); | |
967 | ||
968 | while (time_before(jiffies, t)) { | |
969 | spin_lock_irqsave(&isp116x->lock, flags); | |
970 | /* spin until any current reset finishes */ | |
971 | for (;;) { | |
972 | tmp = isp116x_read_reg32(isp116x, port ? | |
973 | HCRHPORT2 : HCRHPORT1); | |
974 | if (!(tmp & RH_PS_PRS)) | |
975 | break; | |
976 | udelay(500); | |
977 | } | |
978 | /* Don't reset a disconnected port */ | |
979 | if (!(tmp & RH_PS_CCS)) { | |
980 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
981 | break; | |
982 | } | |
983 | /* Reset lasts 10ms (claims datasheet) */ | |
984 | isp116x_write_reg32(isp116x, port ? HCRHPORT2 : | |
985 | HCRHPORT1, (RH_PS_PRS)); | |
986 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
987 | msleep(10); | |
988 | } | |
989 | } | |
990 | ||
991 | /* Adapted from ohci-hub.c */ | |
992 | static int isp116x_hub_control(struct usb_hcd *hcd, | |
993 | u16 typeReq, | |
994 | u16 wValue, u16 wIndex, char *buf, u16 wLength) | |
995 | { | |
996 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
997 | int ret = 0; | |
998 | unsigned long flags; | |
999 | int ports = isp116x->rhdesca & RH_A_NDP; | |
1000 | u32 tmp = 0; | |
1001 | ||
1002 | switch (typeReq) { | |
1003 | case ClearHubFeature: | |
1004 | DBG("ClearHubFeature: "); | |
1005 | switch (wValue) { | |
1006 | case C_HUB_OVER_CURRENT: | |
1007 | DBG("C_HUB_OVER_CURRENT\n"); | |
1008 | spin_lock_irqsave(&isp116x->lock, flags); | |
1009 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_OCIC); | |
1010 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1011 | case C_HUB_LOCAL_POWER: | |
1012 | DBG("C_HUB_LOCAL_POWER\n"); | |
1013 | break; | |
1014 | default: | |
1015 | goto error; | |
1016 | } | |
1017 | break; | |
1018 | case SetHubFeature: | |
1019 | DBG("SetHubFeature: "); | |
1020 | switch (wValue) { | |
1021 | case C_HUB_OVER_CURRENT: | |
1022 | case C_HUB_LOCAL_POWER: | |
1023 | DBG("C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); | |
1024 | break; | |
1025 | default: | |
1026 | goto error; | |
1027 | } | |
1028 | break; | |
1029 | case GetHubDescriptor: | |
1030 | DBG("GetHubDescriptor\n"); | |
1031 | isp116x_hub_descriptor(isp116x, | |
1032 | (struct usb_hub_descriptor *)buf); | |
1033 | break; | |
1034 | case GetHubStatus: | |
1035 | DBG("GetHubStatus\n"); | |
17f8bb73 | 1036 | *(__le32 *) buf = 0; |
4808a1c0 OK |
1037 | break; |
1038 | case GetPortStatus: | |
1039 | DBG("GetPortStatus\n"); | |
1040 | if (!wIndex || wIndex > ports) | |
1041 | goto error; | |
1042 | tmp = isp116x->rhport[--wIndex]; | |
1043 | *(__le32 *) buf = cpu_to_le32(tmp); | |
1044 | DBG("GetPortStatus: port[%d] %08x\n", wIndex + 1, tmp); | |
1045 | break; | |
1046 | case ClearPortFeature: | |
1047 | DBG("ClearPortFeature: "); | |
1048 | if (!wIndex || wIndex > ports) | |
1049 | goto error; | |
1050 | wIndex--; | |
1051 | ||
1052 | switch (wValue) { | |
1053 | case USB_PORT_FEAT_ENABLE: | |
1054 | DBG("USB_PORT_FEAT_ENABLE\n"); | |
1055 | tmp = RH_PS_CCS; | |
1056 | break; | |
1057 | case USB_PORT_FEAT_C_ENABLE: | |
1058 | DBG("USB_PORT_FEAT_C_ENABLE\n"); | |
1059 | tmp = RH_PS_PESC; | |
1060 | break; | |
1061 | case USB_PORT_FEAT_SUSPEND: | |
1062 | DBG("USB_PORT_FEAT_SUSPEND\n"); | |
1063 | tmp = RH_PS_POCI; | |
1064 | break; | |
1065 | case USB_PORT_FEAT_C_SUSPEND: | |
1066 | DBG("USB_PORT_FEAT_C_SUSPEND\n"); | |
1067 | tmp = RH_PS_PSSC; | |
1068 | break; | |
1069 | case USB_PORT_FEAT_POWER: | |
1070 | DBG("USB_PORT_FEAT_POWER\n"); | |
1071 | tmp = RH_PS_LSDA; | |
1072 | break; | |
1073 | case USB_PORT_FEAT_C_CONNECTION: | |
1074 | DBG("USB_PORT_FEAT_C_CONNECTION\n"); | |
1075 | tmp = RH_PS_CSC; | |
1076 | break; | |
1077 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
1078 | DBG("USB_PORT_FEAT_C_OVER_CURRENT\n"); | |
1079 | tmp = RH_PS_OCIC; | |
1080 | break; | |
1081 | case USB_PORT_FEAT_C_RESET: | |
1082 | DBG("USB_PORT_FEAT_C_RESET\n"); | |
1083 | tmp = RH_PS_PRSC; | |
1084 | break; | |
1085 | default: | |
1086 | goto error; | |
1087 | } | |
1088 | spin_lock_irqsave(&isp116x->lock, flags); | |
1089 | isp116x_write_reg32(isp116x, wIndex | |
1090 | ? HCRHPORT2 : HCRHPORT1, tmp); | |
1091 | isp116x->rhport[wIndex] = | |
1092 | isp116x_read_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1); | |
1093 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1094 | break; | |
1095 | case SetPortFeature: | |
1096 | DBG("SetPortFeature: "); | |
1097 | if (!wIndex || wIndex > ports) | |
1098 | goto error; | |
1099 | wIndex--; | |
1100 | switch (wValue) { | |
1101 | case USB_PORT_FEAT_SUSPEND: | |
1102 | DBG("USB_PORT_FEAT_SUSPEND\n"); | |
1103 | spin_lock_irqsave(&isp116x->lock, flags); | |
1104 | isp116x_write_reg32(isp116x, wIndex | |
1105 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PSS); | |
1106 | break; | |
1107 | case USB_PORT_FEAT_POWER: | |
1108 | DBG("USB_PORT_FEAT_POWER\n"); | |
1109 | spin_lock_irqsave(&isp116x->lock, flags); | |
1110 | isp116x_write_reg32(isp116x, wIndex | |
1111 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PPS); | |
1112 | break; | |
1113 | case USB_PORT_FEAT_RESET: | |
1114 | DBG("USB_PORT_FEAT_RESET\n"); | |
1115 | root_port_reset(isp116x, wIndex); | |
1116 | spin_lock_irqsave(&isp116x->lock, flags); | |
1117 | break; | |
1118 | default: | |
1119 | goto error; | |
1120 | } | |
1121 | isp116x->rhport[wIndex] = | |
1122 | isp116x_read_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1); | |
1123 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1124 | break; | |
1125 | ||
1126 | default: | |
1127 | error: | |
1128 | /* "protocol stall" on error */ | |
1129 | DBG("PROTOCOL STALL\n"); | |
1130 | ret = -EPIPE; | |
1131 | } | |
1132 | return ret; | |
1133 | } | |
1134 | ||
4808a1c0 OK |
1135 | /*-----------------------------------------------------------------*/ |
1136 | ||
959eea21 | 1137 | #ifdef CONFIG_DEBUG_FS |
4808a1c0 OK |
1138 | |
1139 | static void dump_irq(struct seq_file *s, char *label, u16 mask) | |
1140 | { | |
1141 | seq_printf(s, "%s %04x%s%s%s%s%s%s\n", label, mask, | |
1142 | mask & HCuPINT_CLKRDY ? " clkrdy" : "", | |
1143 | mask & HCuPINT_SUSP ? " susp" : "", | |
1144 | mask & HCuPINT_OPR ? " opr" : "", | |
1145 | mask & HCuPINT_AIIEOT ? " eot" : "", | |
1146 | mask & HCuPINT_ATL ? " atl" : "", | |
1147 | mask & HCuPINT_SOF ? " sof" : ""); | |
1148 | } | |
1149 | ||
1150 | static void dump_int(struct seq_file *s, char *label, u32 mask) | |
1151 | { | |
1152 | seq_printf(s, "%s %08x%s%s%s%s%s%s%s\n", label, mask, | |
1153 | mask & HCINT_MIE ? " MIE" : "", | |
1154 | mask & HCINT_RHSC ? " rhsc" : "", | |
1155 | mask & HCINT_FNO ? " fno" : "", | |
1156 | mask & HCINT_UE ? " ue" : "", | |
1157 | mask & HCINT_RD ? " rd" : "", | |
1158 | mask & HCINT_SF ? " sof" : "", mask & HCINT_SO ? " so" : ""); | |
1159 | } | |
1160 | ||
959eea21 | 1161 | static int isp116x_show_dbg(struct seq_file *s, void *unused) |
4808a1c0 OK |
1162 | { |
1163 | struct isp116x *isp116x = s->private; | |
4808a1c0 OK |
1164 | |
1165 | seq_printf(s, "%s\n%s version %s\n", | |
1166 | isp116x_to_hcd(isp116x)->product_desc, hcd_name, | |
1167 | DRIVER_VERSION); | |
1168 | ||
1169 | if (HC_IS_SUSPENDED(isp116x_to_hcd(isp116x)->state)) { | |
1170 | seq_printf(s, "HCD is suspended\n"); | |
1171 | return 0; | |
1172 | } | |
1173 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) { | |
1174 | seq_printf(s, "HCD not running\n"); | |
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | spin_lock_irq(&isp116x->lock); | |
4808a1c0 OK |
1179 | dump_irq(s, "hc_irq_enable", isp116x_read_reg16(isp116x, HCuPINTENB)); |
1180 | dump_irq(s, "hc_irq_status", isp116x_read_reg16(isp116x, HCuPINT)); | |
1181 | dump_int(s, "hc_int_enable", isp116x_read_reg32(isp116x, HCINTENB)); | |
1182 | dump_int(s, "hc_int_status", isp116x_read_reg32(isp116x, HCINTSTAT)); | |
959eea21 | 1183 | isp116x_show_regs_seq(isp116x, s); |
4808a1c0 OK |
1184 | spin_unlock_irq(&isp116x->lock); |
1185 | seq_printf(s, "\n"); | |
1186 | ||
1187 | return 0; | |
1188 | } | |
1189 | ||
959eea21 | 1190 | static int isp116x_open_seq(struct inode *inode, struct file *file) |
4808a1c0 | 1191 | { |
8e18e294 | 1192 | return single_open(file, isp116x_show_dbg, inode->i_private); |
4808a1c0 OK |
1193 | } |
1194 | ||
066202dd | 1195 | static const struct file_operations isp116x_debug_fops = { |
959eea21 | 1196 | .open = isp116x_open_seq, |
4808a1c0 OK |
1197 | .read = seq_read, |
1198 | .llseek = seq_lseek, | |
1199 | .release = single_release, | |
1200 | }; | |
1201 | ||
959eea21 | 1202 | static int create_debug_file(struct isp116x *isp116x) |
4808a1c0 | 1203 | { |
959eea21 OK |
1204 | isp116x->dentry = debugfs_create_file(hcd_name, |
1205 | S_IRUGO, NULL, isp116x, | |
1206 | &isp116x_debug_fops); | |
1207 | if (!isp116x->dentry) | |
1208 | return -ENOMEM; | |
1209 | return 0; | |
4808a1c0 OK |
1210 | } |
1211 | ||
1212 | static void remove_debug_file(struct isp116x *isp116x) | |
1213 | { | |
959eea21 | 1214 | debugfs_remove(isp116x->dentry); |
4808a1c0 OK |
1215 | } |
1216 | ||
959eea21 OK |
1217 | #else |
1218 | ||
1219 | #define create_debug_file(d) 0 | |
1220 | #define remove_debug_file(d) do{}while(0) | |
1221 | ||
1222 | #endif /* CONFIG_DEBUG_FS */ | |
4808a1c0 OK |
1223 | |
1224 | /*-----------------------------------------------------------------*/ | |
1225 | ||
1226 | /* | |
1227 | Software reset - can be called from any contect. | |
1228 | */ | |
1229 | static int isp116x_sw_reset(struct isp116x *isp116x) | |
1230 | { | |
1231 | int retries = 15; | |
1232 | unsigned long flags; | |
1233 | int ret = 0; | |
1234 | ||
1235 | spin_lock_irqsave(&isp116x->lock, flags); | |
1236 | isp116x_write_reg16(isp116x, HCSWRES, HCSWRES_MAGIC); | |
1237 | isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR); | |
1238 | while (--retries) { | |
1239 | /* It usually resets within 1 ms */ | |
1240 | mdelay(1); | |
1241 | if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR)) | |
1242 | break; | |
1243 | } | |
1244 | if (!retries) { | |
1245 | ERR("Software reset timeout\n"); | |
1246 | ret = -ETIME; | |
1247 | } | |
1248 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1249 | return ret; | |
1250 | } | |
1251 | ||
4808a1c0 OK |
1252 | static int isp116x_reset(struct usb_hcd *hcd) |
1253 | { | |
1254 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1255 | unsigned long t; | |
1256 | u16 clkrdy = 0; | |
959eea21 | 1257 | int ret, timeout = 15 /* ms */ ; |
4808a1c0 | 1258 | |
f8d23d30 | 1259 | ret = isp116x_sw_reset(isp116x); |
4808a1c0 OK |
1260 | if (ret) |
1261 | return ret; | |
1262 | ||
1263 | t = jiffies + msecs_to_jiffies(timeout); | |
1264 | while (time_before_eq(jiffies, t)) { | |
1265 | msleep(4); | |
1266 | spin_lock_irq(&isp116x->lock); | |
1267 | clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY; | |
1268 | spin_unlock_irq(&isp116x->lock); | |
1269 | if (clkrdy) | |
1270 | break; | |
1271 | } | |
1272 | if (!clkrdy) { | |
959eea21 | 1273 | ERR("Clock not ready after %dms\n", timeout); |
589a0083 OK |
1274 | /* After sw_reset the clock won't report to be ready, if |
1275 | H_WAKEUP pin is high. */ | |
f8d23d30 | 1276 | ERR("Please make sure that the H_WAKEUP pin is pulled low!\n"); |
4808a1c0 OK |
1277 | ret = -ENODEV; |
1278 | } | |
1279 | return ret; | |
1280 | } | |
1281 | ||
1282 | static void isp116x_stop(struct usb_hcd *hcd) | |
1283 | { | |
1284 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1285 | unsigned long flags; | |
1286 | u32 val; | |
1287 | ||
1288 | spin_lock_irqsave(&isp116x->lock, flags); | |
1289 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
1290 | ||
1291 | /* Switch off ports' power, some devices don't come up | |
1292 | after next 'insmod' without this */ | |
1293 | val = isp116x_read_reg32(isp116x, HCRHDESCA); | |
1294 | val &= ~(RH_A_NPS | RH_A_PSM); | |
1295 | isp116x_write_reg32(isp116x, HCRHDESCA, val); | |
1296 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS); | |
1297 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1298 | ||
f8d23d30 | 1299 | isp116x_sw_reset(isp116x); |
4808a1c0 OK |
1300 | } |
1301 | ||
1302 | /* | |
1303 | Configure the chip. The chip must be successfully reset by now. | |
1304 | */ | |
1305 | static int isp116x_start(struct usb_hcd *hcd) | |
1306 | { | |
1307 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1308 | struct isp116x_platform_data *board = isp116x->board; | |
4808a1c0 OK |
1309 | u32 val; |
1310 | unsigned long flags; | |
1311 | ||
1312 | spin_lock_irqsave(&isp116x->lock, flags); | |
1313 | ||
1314 | /* clear interrupt status and disable all interrupt sources */ | |
1315 | isp116x_write_reg16(isp116x, HCuPINT, 0xff); | |
1316 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
1317 | ||
1318 | val = isp116x_read_reg16(isp116x, HCCHIPID); | |
1319 | if ((val & HCCHIPID_MASK) != HCCHIPID_MAGIC) { | |
1320 | ERR("Invalid chip ID %04x\n", val); | |
1321 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1322 | return -ENODEV; | |
1323 | } | |
1324 | ||
9a57116b OK |
1325 | /* To be removed in future */ |
1326 | hcd->uses_new_polling = 1; | |
1327 | ||
4808a1c0 OK |
1328 | isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE); |
1329 | isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE); | |
1330 | ||
1331 | /* ----- HW conf */ | |
1332 | val = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); | |
1333 | if (board->sel15Kres) | |
1334 | val |= HCHWCFG_15KRSEL; | |
1335 | /* Remote wakeup won't work without working clock */ | |
d4d62861 | 1336 | if (board->remote_wakeup_enable) |
4808a1c0 OK |
1337 | val |= HCHWCFG_CLKNOTSTOP; |
1338 | if (board->oc_enable) | |
1339 | val |= HCHWCFG_ANALOG_OC; | |
1340 | if (board->int_act_high) | |
1341 | val |= HCHWCFG_INT_POL; | |
1342 | if (board->int_edge_triggered) | |
1343 | val |= HCHWCFG_INT_TRIGGER; | |
1344 | isp116x_write_reg16(isp116x, HCHWCFG, val); | |
1345 | ||
1346 | /* ----- Root hub conf */ | |
dc5bed09 | 1347 | val = (25 << 24) & RH_A_POTPGT; |
165c0f39 OK |
1348 | /* AN10003_1.pdf recommends RH_A_NPS (no power switching) to |
1349 | be always set. Yet, instead, we request individual port | |
1350 | power switching. */ | |
1351 | val |= RH_A_PSM; | |
9d233d9f OK |
1352 | /* Report overcurrent per port */ |
1353 | val |= RH_A_OCPM; | |
4808a1c0 OK |
1354 | isp116x_write_reg32(isp116x, HCRHDESCA, val); |
1355 | isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA); | |
1356 | ||
1357 | val = RH_B_PPCM; | |
1358 | isp116x_write_reg32(isp116x, HCRHDESCB, val); | |
1359 | isp116x->rhdescb = isp116x_read_reg32(isp116x, HCRHDESCB); | |
1360 | ||
1361 | val = 0; | |
1362 | if (board->remote_wakeup_enable) { | |
704aa0b7 DB |
1363 | if (!device_can_wakeup(hcd->self.controller)) |
1364 | device_init_wakeup(hcd->self.controller, 1); | |
4808a1c0 OK |
1365 | val |= RH_HS_DRWE; |
1366 | } | |
1367 | isp116x_write_reg32(isp116x, HCRHSTATUS, val); | |
1368 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); | |
1369 | ||
1370 | isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf); | |
4808a1c0 | 1371 | |
4808a1c0 OK |
1372 | hcd->state = HC_STATE_RUNNING; |
1373 | ||
4808a1c0 OK |
1374 | /* Set up interrupts */ |
1375 | isp116x->intenb = HCINT_MIE | HCINT_RHSC | HCINT_UE; | |
1376 | if (board->remote_wakeup_enable) | |
1377 | isp116x->intenb |= HCINT_RD; | |
1378 | isp116x->irqenb = HCuPINT_ATL | HCuPINT_OPR; /* | HCuPINT_SUSP; */ | |
1379 | isp116x_write_reg32(isp116x, HCINTENB, isp116x->intenb); | |
1380 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); | |
1381 | ||
1382 | /* Go operational */ | |
1383 | val = HCCONTROL_USB_OPER; | |
4808a1c0 OK |
1384 | if (board->remote_wakeup_enable) |
1385 | val |= HCCONTROL_RWE; | |
1386 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1387 | ||
1388 | /* Disable ports to avoid race in device enumeration */ | |
1389 | isp116x_write_reg32(isp116x, HCRHPORT1, RH_PS_CCS); | |
1390 | isp116x_write_reg32(isp116x, HCRHPORT2, RH_PS_CCS); | |
1391 | ||
959eea21 | 1392 | isp116x_show_regs_log(isp116x); |
4808a1c0 OK |
1393 | spin_unlock_irqrestore(&isp116x->lock, flags); |
1394 | return 0; | |
1395 | } | |
1396 | ||
959eea21 OK |
1397 | #ifdef CONFIG_PM |
1398 | ||
1399 | static int isp116x_bus_suspend(struct usb_hcd *hcd) | |
1400 | { | |
1401 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1402 | unsigned long flags; | |
1403 | u32 val; | |
1404 | int ret = 0; | |
1405 | ||
1406 | spin_lock_irqsave(&isp116x->lock, flags); | |
959eea21 | 1407 | val = isp116x_read_reg32(isp116x, HCCONTROL); |
0be930c5 | 1408 | |
959eea21 OK |
1409 | switch (val & HCCONTROL_HCFS) { |
1410 | case HCCONTROL_USB_OPER: | |
0be930c5 | 1411 | spin_unlock_irqrestore(&isp116x->lock, flags); |
959eea21 OK |
1412 | val &= (~HCCONTROL_HCFS & ~HCCONTROL_RWE); |
1413 | val |= HCCONTROL_USB_SUSPEND; | |
704aa0b7 | 1414 | if (device_may_wakeup(&hcd->self.root_hub->dev)) |
959eea21 OK |
1415 | val |= HCCONTROL_RWE; |
1416 | /* Wait for usb transfers to finish */ | |
0be930c5 OK |
1417 | msleep(2); |
1418 | spin_lock_irqsave(&isp116x->lock, flags); | |
959eea21 | 1419 | isp116x_write_reg32(isp116x, HCCONTROL, val); |
0be930c5 | 1420 | spin_unlock_irqrestore(&isp116x->lock, flags); |
959eea21 | 1421 | /* Wait for devices to suspend */ |
0be930c5 | 1422 | msleep(5); |
959eea21 OK |
1423 | break; |
1424 | case HCCONTROL_USB_RESUME: | |
1425 | isp116x_write_reg32(isp116x, HCCONTROL, | |
1426 | (val & ~HCCONTROL_HCFS) | | |
1427 | HCCONTROL_USB_RESET); | |
1428 | case HCCONTROL_USB_RESET: | |
1429 | ret = -EBUSY; | |
0be930c5 OK |
1430 | default: /* HCCONTROL_USB_SUSPEND */ |
1431 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
959eea21 | 1432 | break; |
959eea21 OK |
1433 | } |
1434 | ||
959eea21 OK |
1435 | return ret; |
1436 | } | |
1437 | ||
1438 | static int isp116x_bus_resume(struct usb_hcd *hcd) | |
1439 | { | |
1440 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1441 | u32 val; | |
1442 | ||
1443 | msleep(5); | |
1444 | spin_lock_irq(&isp116x->lock); | |
1445 | ||
1446 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1447 | switch (val & HCCONTROL_HCFS) { | |
1448 | case HCCONTROL_USB_SUSPEND: | |
1449 | val &= ~HCCONTROL_HCFS; | |
1450 | val |= HCCONTROL_USB_RESUME; | |
1451 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1452 | case HCCONTROL_USB_RESUME: | |
1453 | break; | |
1454 | case HCCONTROL_USB_OPER: | |
1455 | spin_unlock_irq(&isp116x->lock); | |
1456 | /* Without setting power_state here the | |
1457 | SUSPENDED state won't be removed from | |
1458 | sysfs/usbN/power.state as a response to remote | |
1459 | wakeup. Maybe in the future. */ | |
1460 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; | |
1461 | return 0; | |
1462 | default: | |
1463 | /* HCCONTROL_USB_RESET: this may happen, when during | |
1464 | suspension the HC lost power. Reinitialize completely */ | |
1465 | spin_unlock_irq(&isp116x->lock); | |
1466 | DBG("Chip has been reset while suspended. Reinit from scratch.\n"); | |
1467 | isp116x_reset(hcd); | |
1468 | isp116x_start(hcd); | |
1469 | isp116x_hub_control(hcd, SetPortFeature, | |
1470 | USB_PORT_FEAT_POWER, 1, NULL, 0); | |
1471 | if ((isp116x->rhdesca & RH_A_NDP) == 2) | |
1472 | isp116x_hub_control(hcd, SetPortFeature, | |
1473 | USB_PORT_FEAT_POWER, 2, NULL, 0); | |
1474 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; | |
1475 | return 0; | |
1476 | } | |
1477 | ||
1478 | val = isp116x->rhdesca & RH_A_NDP; | |
1479 | while (val--) { | |
1480 | u32 stat = | |
1481 | isp116x_read_reg32(isp116x, val ? HCRHPORT2 : HCRHPORT1); | |
1482 | /* force global, not selective, resume */ | |
1483 | if (!(stat & RH_PS_PSS)) | |
1484 | continue; | |
1485 | DBG("%s: Resuming port %d\n", __func__, val); | |
1486 | isp116x_write_reg32(isp116x, RH_PS_POCI, val | |
1487 | ? HCRHPORT2 : HCRHPORT1); | |
1488 | } | |
1489 | spin_unlock_irq(&isp116x->lock); | |
1490 | ||
1491 | hcd->state = HC_STATE_RESUMING; | |
1492 | msleep(20); | |
1493 | ||
1494 | /* Go operational */ | |
1495 | spin_lock_irq(&isp116x->lock); | |
1496 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1497 | isp116x_write_reg32(isp116x, HCCONTROL, | |
1498 | (val & ~HCCONTROL_HCFS) | HCCONTROL_USB_OPER); | |
1499 | spin_unlock_irq(&isp116x->lock); | |
1500 | /* see analogous comment above */ | |
1501 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; | |
1502 | hcd->state = HC_STATE_RUNNING; | |
1503 | ||
1504 | return 0; | |
1505 | } | |
1506 | ||
1507 | #else | |
1508 | ||
1509 | #define isp116x_bus_suspend NULL | |
1510 | #define isp116x_bus_resume NULL | |
1511 | ||
1512 | #endif | |
4808a1c0 OK |
1513 | |
1514 | static struct hc_driver isp116x_hc_driver = { | |
1515 | .description = hcd_name, | |
1516 | .product_desc = "ISP116x Host Controller", | |
1517 | .hcd_priv_size = sizeof(struct isp116x), | |
1518 | ||
1519 | .irq = isp116x_irq, | |
1520 | .flags = HCD_USB11, | |
1521 | ||
1522 | .reset = isp116x_reset, | |
1523 | .start = isp116x_start, | |
1524 | .stop = isp116x_stop, | |
1525 | ||
1526 | .urb_enqueue = isp116x_urb_enqueue, | |
1527 | .urb_dequeue = isp116x_urb_dequeue, | |
1528 | .endpoint_disable = isp116x_endpoint_disable, | |
1529 | ||
1530 | .get_frame_number = isp116x_get_frame, | |
1531 | ||
1532 | .hub_status_data = isp116x_hub_status_data, | |
1533 | .hub_control = isp116x_hub_control, | |
0c0382e3 AS |
1534 | .bus_suspend = isp116x_bus_suspend, |
1535 | .bus_resume = isp116x_bus_resume, | |
4808a1c0 OK |
1536 | }; |
1537 | ||
1538 | /*----------------------------------------------------------------*/ | |
1539 | ||
b712548c | 1540 | static int isp116x_remove(struct platform_device *pdev) |
4808a1c0 | 1541 | { |
3ae5eaec | 1542 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
589a0083 | 1543 | struct isp116x *isp116x; |
4808a1c0 OK |
1544 | struct resource *res; |
1545 | ||
9a57116b | 1546 | if (!hcd) |
589a0083 OK |
1547 | return 0; |
1548 | isp116x = hcd_to_isp116x(hcd); | |
4808a1c0 OK |
1549 | remove_debug_file(isp116x); |
1550 | usb_remove_hcd(hcd); | |
1551 | ||
1552 | iounmap(isp116x->data_reg); | |
1553 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1554 | release_mem_region(res->start, 2); | |
1555 | iounmap(isp116x->addr_reg); | |
1556 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1557 | release_mem_region(res->start, 2); | |
1558 | ||
1559 | usb_put_hcd(hcd); | |
1560 | return 0; | |
1561 | } | |
1562 | ||
1563 | #define resource_len(r) (((r)->end - (r)->start) + 1) | |
1564 | ||
5bcd70eb | 1565 | static int __devinit isp116x_probe(struct platform_device *pdev) |
4808a1c0 OK |
1566 | { |
1567 | struct usb_hcd *hcd; | |
1568 | struct isp116x *isp116x; | |
4808a1c0 OK |
1569 | struct resource *addr, *data; |
1570 | void __iomem *addr_reg; | |
1571 | void __iomem *data_reg; | |
1572 | int irq; | |
1573 | int ret = 0; | |
1574 | ||
4808a1c0 OK |
1575 | if (pdev->num_resources < 3) { |
1576 | ret = -ENODEV; | |
1577 | goto err1; | |
1578 | } | |
1579 | ||
1580 | data = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1581 | addr = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1582 | irq = platform_get_irq(pdev, 0); | |
1583 | if (!addr || !data || irq < 0) { | |
1584 | ret = -ENODEV; | |
1585 | goto err1; | |
1586 | } | |
1587 | ||
3ae5eaec | 1588 | if (pdev->dev.dma_mask) { |
4808a1c0 OK |
1589 | DBG("DMA not supported\n"); |
1590 | ret = -EINVAL; | |
1591 | goto err1; | |
1592 | } | |
1593 | ||
1594 | if (!request_mem_region(addr->start, 2, hcd_name)) { | |
1595 | ret = -EBUSY; | |
1596 | goto err1; | |
1597 | } | |
1598 | addr_reg = ioremap(addr->start, resource_len(addr)); | |
1599 | if (addr_reg == NULL) { | |
1600 | ret = -ENOMEM; | |
1601 | goto err2; | |
1602 | } | |
1603 | if (!request_mem_region(data->start, 2, hcd_name)) { | |
1604 | ret = -EBUSY; | |
1605 | goto err3; | |
1606 | } | |
1607 | data_reg = ioremap(data->start, resource_len(data)); | |
1608 | if (data_reg == NULL) { | |
1609 | ret = -ENOMEM; | |
1610 | goto err4; | |
1611 | } | |
1612 | ||
1613 | /* allocate and initialize hcd */ | |
3ae5eaec | 1614 | hcd = usb_create_hcd(&isp116x_hc_driver, &pdev->dev, pdev->dev.bus_id); |
4808a1c0 OK |
1615 | if (!hcd) { |
1616 | ret = -ENOMEM; | |
1617 | goto err5; | |
1618 | } | |
1619 | /* this rsrc_start is bogus */ | |
1620 | hcd->rsrc_start = addr->start; | |
1621 | isp116x = hcd_to_isp116x(hcd); | |
1622 | isp116x->data_reg = data_reg; | |
1623 | isp116x->addr_reg = addr_reg; | |
1624 | spin_lock_init(&isp116x->lock); | |
1625 | INIT_LIST_HEAD(&isp116x->async); | |
3ae5eaec | 1626 | isp116x->board = pdev->dev.platform_data; |
4808a1c0 OK |
1627 | |
1628 | if (!isp116x->board) { | |
1629 | ERR("Platform data structure not initialized\n"); | |
1630 | ret = -ENODEV; | |
1631 | goto err6; | |
1632 | } | |
1633 | if (isp116x_check_platform_delay(isp116x)) { | |
1634 | ERR("USE_PLATFORM_DELAY defined, but delay function not " | |
1635 | "implemented.\n"); | |
1636 | ERR("See comments in drivers/usb/host/isp116x-hcd.c\n"); | |
1637 | ret = -ENODEV; | |
1638 | goto err6; | |
1639 | } | |
1640 | ||
d54b5caa | 1641 | ret = usb_add_hcd(hcd, irq, IRQF_DISABLED); |
959eea21 | 1642 | if (ret) |
4808a1c0 OK |
1643 | goto err6; |
1644 | ||
959eea21 OK |
1645 | ret = create_debug_file(isp116x); |
1646 | if (ret) { | |
1647 | ERR("Couldn't create debugfs entry\n"); | |
1648 | goto err7; | |
1649 | } | |
1650 | ||
4808a1c0 OK |
1651 | return 0; |
1652 | ||
959eea21 OK |
1653 | err7: |
1654 | usb_remove_hcd(hcd); | |
4808a1c0 OK |
1655 | err6: |
1656 | usb_put_hcd(hcd); | |
1657 | err5: | |
1658 | iounmap(data_reg); | |
1659 | err4: | |
1660 | release_mem_region(data->start, 2); | |
1661 | err3: | |
1662 | iounmap(addr_reg); | |
1663 | err2: | |
1664 | release_mem_region(addr->start, 2); | |
1665 | err1: | |
1666 | ERR("init error, %d\n", ret); | |
1667 | return ret; | |
1668 | } | |
1669 | ||
1670 | #ifdef CONFIG_PM | |
1671 | /* | |
1672 | Suspend of platform device | |
1673 | */ | |
3ae5eaec | 1674 | static int isp116x_suspend(struct platform_device *dev, pm_message_t state) |
4808a1c0 | 1675 | { |
959eea21 | 1676 | VDBG("%s: state %x\n", __func__, state.event); |
3ae5eaec | 1677 | dev->dev.power.power_state = state; |
959eea21 | 1678 | return 0; |
4808a1c0 OK |
1679 | } |
1680 | ||
1681 | /* | |
1682 | Resume platform device | |
1683 | */ | |
3ae5eaec | 1684 | static int isp116x_resume(struct platform_device *dev) |
4808a1c0 | 1685 | { |
959eea21 | 1686 | VDBG("%s: state %x\n", __func__, dev->power.power_state.event); |
3ae5eaec | 1687 | dev->dev.power.power_state = PMSG_ON; |
959eea21 | 1688 | return 0; |
4808a1c0 OK |
1689 | } |
1690 | ||
1691 | #else | |
1692 | ||
1693 | #define isp116x_suspend NULL | |
1694 | #define isp116x_resume NULL | |
1695 | ||
1696 | #endif | |
1697 | ||
3ae5eaec | 1698 | static struct platform_driver isp116x_driver = { |
4808a1c0 OK |
1699 | .probe = isp116x_probe, |
1700 | .remove = isp116x_remove, | |
1701 | .suspend = isp116x_suspend, | |
1702 | .resume = isp116x_resume, | |
0be930c5 OK |
1703 | .driver = { |
1704 | .name = (char *)hcd_name, | |
1705 | }, | |
4808a1c0 OK |
1706 | }; |
1707 | ||
1708 | /*-----------------------------------------------------------------*/ | |
1709 | ||
1710 | static int __init isp116x_init(void) | |
1711 | { | |
1712 | if (usb_disabled()) | |
1713 | return -ENODEV; | |
1714 | ||
1715 | INFO("driver %s, %s\n", hcd_name, DRIVER_VERSION); | |
3ae5eaec | 1716 | return platform_driver_register(&isp116x_driver); |
4808a1c0 OK |
1717 | } |
1718 | ||
1719 | module_init(isp116x_init); | |
1720 | ||
1721 | static void __exit isp116x_cleanup(void) | |
1722 | { | |
3ae5eaec | 1723 | platform_driver_unregister(&isp116x_driver); |
4808a1c0 OK |
1724 | } |
1725 | ||
1726 | module_exit(isp116x_cleanup); |