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Commit | Line | Data |
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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 OK |
65 | #include <linux/usb.h> |
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; | |
231 | spin_lock(&urb->lock); | |
232 | ep->data = (unsigned char *)urb->transfer_buffer | |
233 | + urb->actual_length; | |
234 | ||
235 | switch (ep->nextpid) { | |
236 | case USB_PID_IN: | |
237 | toggle = usb_gettoggle(urb->dev, ep->epnum, 0); | |
238 | dir = PTD_DIR_IN; | |
239 | break; | |
240 | case USB_PID_OUT: | |
241 | toggle = usb_gettoggle(urb->dev, ep->epnum, 1); | |
242 | dir = PTD_DIR_OUT; | |
243 | break; | |
244 | case USB_PID_SETUP: | |
4808a1c0 OK |
245 | len = sizeof(struct usb_ctrlrequest); |
246 | ep->data = urb->setup_packet; | |
247 | break; | |
248 | case USB_PID_ACK: | |
249 | toggle = 1; | |
250 | len = 0; | |
251 | dir = (urb->transfer_buffer_length | |
252 | && usb_pipein(urb->pipe)) | |
253 | ? PTD_DIR_OUT : PTD_DIR_IN; | |
254 | break; | |
255 | default: | |
4808a1c0 OK |
256 | ERR("%s %d: ep->nextpid %d\n", __func__, __LINE__, |
257 | ep->nextpid); | |
17f8bb73 | 258 | BUG(); |
4808a1c0 OK |
259 | } |
260 | ||
261 | ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); | |
262 | ptd->mps = PTD_MPS(ep->maxpacket) | |
263 | | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | |
264 | | PTD_EP(ep->epnum); | |
265 | ptd->len = PTD_LEN(len) | PTD_DIR(dir); | |
266 | ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); | |
267 | spin_unlock(&urb->lock); | |
268 | if (!ep->active) { | |
269 | ptd->mps |= PTD_LAST_MSK; | |
270 | isp116x->atl_last_dir = dir; | |
271 | } | |
272 | isp116x->atl_bufshrt = sizeof(struct ptd) + isp116x->atl_buflen; | |
273 | isp116x->atl_buflen = isp116x->atl_bufshrt + ALIGN(len, 4); | |
274 | } | |
275 | } | |
276 | ||
277 | /* | |
278 | Analyze transfer results, handle partial transfers and errors | |
279 | */ | |
280 | static void postproc_atl_queue(struct isp116x *isp116x) | |
281 | { | |
282 | struct isp116x_ep *ep; | |
283 | struct urb *urb; | |
284 | struct usb_device *udev; | |
285 | struct ptd *ptd; | |
286 | int short_not_ok; | |
287 | u8 cc; | |
288 | ||
289 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
290 | BUG_ON(list_empty(&ep->hep->urb_list)); | |
291 | urb = | |
292 | container_of(ep->hep->urb_list.next, struct urb, urb_list); | |
293 | udev = urb->dev; | |
294 | ptd = &ep->ptd; | |
295 | cc = PTD_GET_CC(ptd); | |
4808a1c0 | 296 | short_not_ok = 1; |
959eea21 | 297 | spin_lock(&urb->lock); |
4808a1c0 OK |
298 | |
299 | /* Data underrun is special. For allowed underrun | |
300 | we clear the error and continue as normal. For | |
301 | forbidden underrun we finish the DATA stage | |
302 | immediately while for control transfer, | |
303 | we do a STATUS stage. */ | |
304 | if (cc == TD_DATAUNDERRUN) { | |
305 | if (!(urb->transfer_flags & URB_SHORT_NOT_OK)) { | |
306 | DBG("Allowed data underrun\n"); | |
307 | cc = TD_CC_NOERROR; | |
308 | short_not_ok = 0; | |
309 | } else { | |
310 | ep->error_count = 1; | |
311 | if (usb_pipecontrol(urb->pipe)) | |
312 | ep->nextpid = USB_PID_ACK; | |
313 | else | |
314 | usb_settoggle(udev, ep->epnum, | |
315 | ep->nextpid == | |
316 | USB_PID_OUT, | |
e9b765de OK |
317 | PTD_GET_TOGGLE(ptd)); |
318 | urb->actual_length += PTD_GET_COUNT(ptd); | |
4808a1c0 OK |
319 | urb->status = cc_to_error[TD_DATAUNDERRUN]; |
320 | spin_unlock(&urb->lock); | |
321 | continue; | |
322 | } | |
323 | } | |
324 | /* Keep underrun error through the STATUS stage */ | |
325 | if (urb->status == cc_to_error[TD_DATAUNDERRUN]) | |
326 | cc = TD_DATAUNDERRUN; | |
327 | ||
328 | if (cc != TD_CC_NOERROR && cc != TD_NOTACCESSED | |
329 | && (++ep->error_count >= 3 || cc == TD_CC_STALL | |
330 | || cc == TD_DATAOVERRUN)) { | |
331 | if (urb->status == -EINPROGRESS) | |
332 | urb->status = cc_to_error[cc]; | |
333 | if (ep->nextpid == USB_PID_ACK) | |
334 | ep->nextpid = 0; | |
335 | spin_unlock(&urb->lock); | |
336 | continue; | |
337 | } | |
338 | /* According to usb spec, zero-length Int transfer signals | |
339 | finishing of the urb. Hey, does this apply only | |
340 | for IN endpoints? */ | |
341 | if (usb_pipeint(urb->pipe) && !PTD_GET_LEN(ptd)) { | |
342 | if (urb->status == -EINPROGRESS) | |
343 | urb->status = 0; | |
344 | spin_unlock(&urb->lock); | |
345 | continue; | |
346 | } | |
347 | ||
348 | /* Relax after previously failed, but later succeeded | |
349 | or correctly NAK'ed retransmission attempt */ | |
350 | if (ep->error_count | |
351 | && (cc == TD_CC_NOERROR || cc == TD_NOTACCESSED)) | |
352 | ep->error_count = 0; | |
353 | ||
354 | /* Take into account idiosyncracies of the isp116x chip | |
355 | regarding toggle bit for failed transfers */ | |
356 | if (ep->nextpid == USB_PID_OUT) | |
357 | usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd) | |
358 | ^ (ep->error_count > 0)); | |
359 | else if (ep->nextpid == USB_PID_IN) | |
360 | usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd) | |
361 | ^ (ep->error_count > 0)); | |
362 | ||
363 | switch (ep->nextpid) { | |
364 | case USB_PID_IN: | |
365 | case USB_PID_OUT: | |
366 | urb->actual_length += PTD_GET_COUNT(ptd); | |
367 | if (PTD_GET_ACTIVE(ptd) | |
368 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
369 | break; | |
370 | if (urb->transfer_buffer_length != urb->actual_length) { | |
371 | if (short_not_ok) | |
372 | break; | |
373 | } else { | |
374 | if (urb->transfer_flags & URB_ZERO_PACKET | |
375 | && ep->nextpid == USB_PID_OUT | |
376 | && !(PTD_GET_COUNT(ptd) % ep->maxpacket)) { | |
377 | DBG("Zero packet requested\n"); | |
378 | break; | |
379 | } | |
380 | } | |
381 | /* All data for this URB is transferred, let's finish */ | |
382 | if (usb_pipecontrol(urb->pipe)) | |
383 | ep->nextpid = USB_PID_ACK; | |
384 | else if (urb->status == -EINPROGRESS) | |
385 | urb->status = 0; | |
386 | break; | |
387 | case USB_PID_SETUP: | |
388 | if (PTD_GET_ACTIVE(ptd) | |
389 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
390 | break; | |
391 | if (urb->transfer_buffer_length == urb->actual_length) | |
392 | ep->nextpid = USB_PID_ACK; | |
393 | else if (usb_pipeout(urb->pipe)) { | |
394 | usb_settoggle(udev, 0, 1, 1); | |
395 | ep->nextpid = USB_PID_OUT; | |
396 | } else { | |
397 | usb_settoggle(udev, 0, 0, 1); | |
398 | ep->nextpid = USB_PID_IN; | |
399 | } | |
400 | break; | |
401 | case USB_PID_ACK: | |
402 | if (PTD_GET_ACTIVE(ptd) | |
403 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
404 | break; | |
405 | if (urb->status == -EINPROGRESS) | |
406 | urb->status = 0; | |
407 | ep->nextpid = 0; | |
408 | break; | |
409 | default: | |
959eea21 | 410 | BUG(); |
4808a1c0 OK |
411 | } |
412 | spin_unlock(&urb->lock); | |
413 | } | |
414 | } | |
415 | ||
416 | /* | |
417 | Take done or failed requests out of schedule. Give back | |
418 | processed urbs. | |
419 | */ | |
420 | static void finish_request(struct isp116x *isp116x, struct isp116x_ep *ep, | |
421 | struct urb *urb, struct pt_regs *regs) | |
422 | __releases(isp116x->lock) __acquires(isp116x->lock) | |
423 | { | |
424 | unsigned i; | |
425 | ||
426 | urb->hcpriv = NULL; | |
427 | ep->error_count = 0; | |
428 | ||
429 | if (usb_pipecontrol(urb->pipe)) | |
430 | ep->nextpid = USB_PID_SETUP; | |
431 | ||
432 | urb_dbg(urb, "Finish"); | |
433 | ||
434 | spin_unlock(&isp116x->lock); | |
435 | usb_hcd_giveback_urb(isp116x_to_hcd(isp116x), urb, regs); | |
436 | spin_lock(&isp116x->lock); | |
437 | ||
438 | /* take idle endpoints out of the schedule */ | |
439 | if (!list_empty(&ep->hep->urb_list)) | |
440 | return; | |
441 | ||
442 | /* async deschedule */ | |
443 | if (!list_empty(&ep->schedule)) { | |
444 | list_del_init(&ep->schedule); | |
445 | return; | |
446 | } | |
447 | ||
448 | /* periodic deschedule */ | |
449 | DBG("deschedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); | |
450 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { | |
451 | struct isp116x_ep *temp; | |
452 | struct isp116x_ep **prev = &isp116x->periodic[i]; | |
453 | ||
454 | while (*prev && ((temp = *prev) != ep)) | |
455 | prev = &temp->next; | |
456 | if (*prev) | |
457 | *prev = ep->next; | |
458 | isp116x->load[i] -= ep->load; | |
459 | } | |
460 | ep->branch = PERIODIC_SIZE; | |
461 | isp116x_to_hcd(isp116x)->self.bandwidth_allocated -= | |
462 | ep->load / ep->period; | |
463 | ||
464 | /* switch irq type? */ | |
465 | if (!--isp116x->periodic_count) { | |
466 | isp116x->irqenb &= ~HCuPINT_SOF; | |
467 | isp116x->irqenb |= HCuPINT_ATL; | |
468 | } | |
469 | } | |
470 | ||
471 | /* | |
472 | Scan transfer lists, schedule transfers, send data off | |
473 | to chip. | |
474 | */ | |
475 | static void start_atl_transfers(struct isp116x *isp116x) | |
476 | { | |
477 | struct isp116x_ep *last_ep = NULL, *ep; | |
478 | struct urb *urb; | |
479 | u16 load = 0; | |
480 | int len, index, speed, byte_time; | |
481 | ||
482 | if (atomic_read(&isp116x->atl_finishing)) | |
483 | return; | |
484 | ||
485 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) | |
486 | return; | |
487 | ||
488 | /* FIFO not empty? */ | |
489 | if (isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_FULL) | |
490 | return; | |
491 | ||
492 | isp116x->atl_active = NULL; | |
493 | isp116x->atl_buflen = isp116x->atl_bufshrt = 0; | |
494 | ||
495 | /* Schedule int transfers */ | |
496 | if (isp116x->periodic_count) { | |
497 | isp116x->fmindex = index = | |
498 | (isp116x->fmindex + 1) & (PERIODIC_SIZE - 1); | |
499 | if ((load = isp116x->load[index])) { | |
500 | /* Bring all int transfers for this frame | |
501 | into the active queue */ | |
502 | isp116x->atl_active = last_ep = | |
503 | isp116x->periodic[index]; | |
504 | while (last_ep->next) | |
505 | last_ep = (last_ep->active = last_ep->next); | |
506 | last_ep->active = NULL; | |
507 | } | |
508 | } | |
509 | ||
510 | /* Schedule control/bulk transfers */ | |
511 | list_for_each_entry(ep, &isp116x->async, schedule) { | |
512 | urb = container_of(ep->hep->urb_list.next, | |
513 | struct urb, urb_list); | |
514 | speed = urb->dev->speed; | |
515 | byte_time = speed == USB_SPEED_LOW | |
516 | ? BYTE_TIME_LOWSPEED : BYTE_TIME_FULLSPEED; | |
517 | ||
518 | if (ep->nextpid == USB_PID_SETUP) { | |
519 | len = sizeof(struct usb_ctrlrequest); | |
520 | } else if (ep->nextpid == USB_PID_ACK) { | |
521 | len = 0; | |
522 | } else { | |
523 | /* Find current free length ... */ | |
524 | len = (MAX_LOAD_LIMIT - load) / byte_time; | |
525 | ||
526 | /* ... then limit it to configured max size ... */ | |
527 | len = min(len, speed == USB_SPEED_LOW ? | |
528 | MAX_TRANSFER_SIZE_LOWSPEED : | |
529 | MAX_TRANSFER_SIZE_FULLSPEED); | |
530 | ||
531 | /* ... and finally cut to the multiple of MaxPacketSize, | |
532 | or to the real length if there's enough room. */ | |
533 | if (len < | |
534 | (urb->transfer_buffer_length - | |
535 | urb->actual_length)) { | |
536 | len -= len % ep->maxpacket; | |
537 | if (!len) | |
538 | continue; | |
539 | } else | |
540 | len = urb->transfer_buffer_length - | |
541 | urb->actual_length; | |
542 | BUG_ON(len < 0); | |
543 | } | |
544 | ||
545 | load += len * byte_time; | |
546 | if (load > MAX_LOAD_LIMIT) | |
547 | break; | |
548 | ||
549 | ep->active = NULL; | |
550 | ep->length = len; | |
551 | if (last_ep) | |
552 | last_ep->active = ep; | |
553 | else | |
554 | isp116x->atl_active = ep; | |
555 | last_ep = ep; | |
556 | } | |
557 | ||
558 | /* Avoid starving of endpoints */ | |
559 | if ((&isp116x->async)->next != (&isp116x->async)->prev) | |
560 | list_move(&isp116x->async, (&isp116x->async)->next); | |
561 | ||
562 | if (isp116x->atl_active) { | |
563 | preproc_atl_queue(isp116x); | |
564 | pack_fifo(isp116x); | |
565 | } | |
566 | } | |
567 | ||
568 | /* | |
569 | Finish the processed transfers | |
570 | */ | |
571 | static void finish_atl_transfers(struct isp116x *isp116x, struct pt_regs *regs) | |
572 | { | |
573 | struct isp116x_ep *ep; | |
574 | struct urb *urb; | |
575 | ||
576 | if (!isp116x->atl_active) | |
577 | return; | |
578 | /* Fifo not ready? */ | |
579 | if (!(isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_DONE)) | |
580 | return; | |
581 | ||
582 | atomic_inc(&isp116x->atl_finishing); | |
583 | unpack_fifo(isp116x); | |
584 | postproc_atl_queue(isp116x); | |
585 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
586 | urb = | |
587 | container_of(ep->hep->urb_list.next, struct urb, urb_list); | |
588 | /* USB_PID_ACK check here avoids finishing of | |
589 | control transfers, for which TD_DATAUNDERRUN | |
590 | occured, while URB_SHORT_NOT_OK was set */ | |
591 | if (urb && urb->status != -EINPROGRESS | |
592 | && ep->nextpid != USB_PID_ACK) | |
593 | finish_request(isp116x, ep, urb, regs); | |
594 | } | |
595 | atomic_dec(&isp116x->atl_finishing); | |
596 | } | |
597 | ||
598 | static irqreturn_t isp116x_irq(struct usb_hcd *hcd, struct pt_regs *regs) | |
599 | { | |
600 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
601 | u16 irqstat; | |
602 | irqreturn_t ret = IRQ_NONE; | |
603 | ||
604 | spin_lock(&isp116x->lock); | |
605 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
606 | irqstat = isp116x_read_reg16(isp116x, HCuPINT); | |
607 | isp116x_write_reg16(isp116x, HCuPINT, irqstat); | |
608 | ||
609 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { | |
610 | ret = IRQ_HANDLED; | |
611 | finish_atl_transfers(isp116x, regs); | |
612 | } | |
613 | ||
614 | if (irqstat & HCuPINT_OPR) { | |
615 | u32 intstat = isp116x_read_reg32(isp116x, HCINTSTAT); | |
616 | isp116x_write_reg32(isp116x, HCINTSTAT, intstat); | |
617 | if (intstat & HCINT_UE) { | |
959eea21 OK |
618 | ERR("Unrecoverable error, HC is dead!\n"); |
619 | /* IRQ's are off, we do no DMA, | |
620 | perfectly ready to die ... */ | |
621 | hcd->state = HC_STATE_HALT; | |
622 | ret = IRQ_HANDLED; | |
623 | goto done; | |
4808a1c0 | 624 | } |
9a57116b OK |
625 | if (intstat & HCINT_RHSC) |
626 | /* When root hub or any of its ports is going | |
627 | to come out of suspend, it may take more | |
628 | than 10ms for status bits to stabilize. */ | |
629 | mod_timer(&hcd->rh_timer, jiffies | |
630 | + msecs_to_jiffies(20) + 1); | |
4808a1c0 OK |
631 | if (intstat & HCINT_RD) { |
632 | DBG("---- remote wakeup\n"); | |
ccdcf77a | 633 | usb_hcd_resume_root_hub(hcd); |
4808a1c0 OK |
634 | } |
635 | irqstat &= ~HCuPINT_OPR; | |
636 | ret = IRQ_HANDLED; | |
637 | } | |
638 | ||
639 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { | |
640 | start_atl_transfers(isp116x); | |
641 | } | |
642 | ||
643 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); | |
959eea21 | 644 | done: |
4808a1c0 OK |
645 | spin_unlock(&isp116x->lock); |
646 | return ret; | |
647 | } | |
648 | ||
649 | /*-----------------------------------------------------------------*/ | |
650 | ||
651 | /* usb 1.1 says max 90% of a frame is available for periodic transfers. | |
652 | * this driver doesn't promise that much since it's got to handle an | |
653 | * IRQ per packet; irq handling latencies also use up that time. | |
654 | */ | |
655 | ||
656 | /* out of 1000 us */ | |
657 | #define MAX_PERIODIC_LOAD 600 | |
658 | static int balance(struct isp116x *isp116x, u16 period, u16 load) | |
659 | { | |
660 | int i, branch = -ENOSPC; | |
661 | ||
662 | /* search for the least loaded schedule branch of that period | |
663 | which has enough bandwidth left unreserved. */ | |
664 | for (i = 0; i < period; i++) { | |
665 | if (branch < 0 || isp116x->load[branch] > isp116x->load[i]) { | |
666 | int j; | |
667 | ||
668 | for (j = i; j < PERIODIC_SIZE; j += period) { | |
669 | if ((isp116x->load[j] + load) | |
670 | > MAX_PERIODIC_LOAD) | |
671 | break; | |
672 | } | |
673 | if (j < PERIODIC_SIZE) | |
674 | continue; | |
675 | branch = i; | |
676 | } | |
677 | } | |
678 | return branch; | |
679 | } | |
680 | ||
681 | /* NB! ALL the code above this point runs with isp116x->lock | |
682 | held, irqs off | |
683 | */ | |
684 | ||
685 | /*-----------------------------------------------------------------*/ | |
686 | ||
687 | static int isp116x_urb_enqueue(struct usb_hcd *hcd, | |
688 | struct usb_host_endpoint *hep, struct urb *urb, | |
55016f10 | 689 | gfp_t mem_flags) |
4808a1c0 OK |
690 | { |
691 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
692 | struct usb_device *udev = urb->dev; | |
693 | unsigned int pipe = urb->pipe; | |
694 | int is_out = !usb_pipein(pipe); | |
695 | int type = usb_pipetype(pipe); | |
696 | int epnum = usb_pipeendpoint(pipe); | |
697 | struct isp116x_ep *ep = NULL; | |
698 | unsigned long flags; | |
699 | int i; | |
700 | int ret = 0; | |
701 | ||
702 | urb_dbg(urb, "Enqueue"); | |
703 | ||
704 | if (type == PIPE_ISOCHRONOUS) { | |
705 | ERR("Isochronous transfers not supported\n"); | |
706 | urb_dbg(urb, "Refused to enqueue"); | |
707 | return -ENXIO; | |
708 | } | |
709 | /* avoid all allocations within spinlocks: request or endpoint */ | |
710 | if (!hep->hcpriv) { | |
7b842b6e | 711 | ep = kzalloc(sizeof *ep, mem_flags); |
4808a1c0 OK |
712 | if (!ep) |
713 | return -ENOMEM; | |
714 | } | |
715 | ||
716 | spin_lock_irqsave(&isp116x->lock, flags); | |
717 | if (!HC_IS_RUNNING(hcd->state)) { | |
959eea21 | 718 | kfree(ep); |
4808a1c0 OK |
719 | ret = -ENODEV; |
720 | goto fail; | |
721 | } | |
722 | ||
723 | if (hep->hcpriv) | |
724 | ep = hep->hcpriv; | |
725 | else { | |
726 | INIT_LIST_HEAD(&ep->schedule); | |
727 | ep->udev = usb_get_dev(udev); | |
728 | ep->epnum = epnum; | |
729 | ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); | |
730 | usb_settoggle(udev, epnum, is_out, 0); | |
731 | ||
732 | if (type == PIPE_CONTROL) { | |
733 | ep->nextpid = USB_PID_SETUP; | |
734 | } else if (is_out) { | |
735 | ep->nextpid = USB_PID_OUT; | |
736 | } else { | |
737 | ep->nextpid = USB_PID_IN; | |
738 | } | |
739 | ||
740 | if (urb->interval) { | |
741 | /* | |
742 | With INT URBs submitted, the driver works with SOF | |
743 | interrupt enabled and ATL interrupt disabled. After | |
744 | the PTDs are written to fifo ram, the chip starts | |
745 | fifo processing and usb transfers after the next | |
746 | SOF and continues until the transfers are finished | |
747 | (succeeded or failed) or the frame ends. Therefore, | |
748 | the transfers occur only in every second frame, | |
749 | while fifo reading/writing and data processing | |
750 | occur in every other second frame. */ | |
751 | if (urb->interval < 2) | |
752 | urb->interval = 2; | |
753 | if (urb->interval > 2 * PERIODIC_SIZE) | |
754 | urb->interval = 2 * PERIODIC_SIZE; | |
755 | ep->period = urb->interval >> 1; | |
756 | ep->branch = PERIODIC_SIZE; | |
757 | ep->load = usb_calc_bus_time(udev->speed, | |
758 | !is_out, | |
759 | (type == PIPE_ISOCHRONOUS), | |
760 | usb_maxpacket(udev, pipe, | |
761 | is_out)) / | |
762 | 1000; | |
763 | } | |
764 | hep->hcpriv = ep; | |
765 | ep->hep = hep; | |
766 | } | |
767 | ||
768 | /* maybe put endpoint into schedule */ | |
769 | switch (type) { | |
770 | case PIPE_CONTROL: | |
771 | case PIPE_BULK: | |
772 | if (list_empty(&ep->schedule)) | |
773 | list_add_tail(&ep->schedule, &isp116x->async); | |
774 | break; | |
775 | case PIPE_INTERRUPT: | |
776 | urb->interval = ep->period; | |
777 | ep->length = min((int)ep->maxpacket, | |
778 | urb->transfer_buffer_length); | |
779 | ||
780 | /* urb submitted for already existing endpoint */ | |
781 | if (ep->branch < PERIODIC_SIZE) | |
782 | break; | |
783 | ||
784 | ret = ep->branch = balance(isp116x, ep->period, ep->load); | |
785 | if (ret < 0) | |
786 | goto fail; | |
787 | ret = 0; | |
788 | ||
789 | urb->start_frame = (isp116x->fmindex & (PERIODIC_SIZE - 1)) | |
790 | + ep->branch; | |
791 | ||
792 | /* sort each schedule branch by period (slow before fast) | |
793 | to share the faster parts of the tree without needing | |
794 | dummy/placeholder nodes */ | |
795 | DBG("schedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); | |
796 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { | |
797 | struct isp116x_ep **prev = &isp116x->periodic[i]; | |
798 | struct isp116x_ep *here = *prev; | |
799 | ||
800 | while (here && ep != here) { | |
801 | if (ep->period > here->period) | |
802 | break; | |
803 | prev = &here->next; | |
804 | here = *prev; | |
805 | } | |
806 | if (ep != here) { | |
807 | ep->next = here; | |
808 | *prev = ep; | |
809 | } | |
810 | isp116x->load[i] += ep->load; | |
811 | } | |
812 | hcd->self.bandwidth_allocated += ep->load / ep->period; | |
813 | ||
814 | /* switch over to SOFint */ | |
815 | if (!isp116x->periodic_count++) { | |
816 | isp116x->irqenb &= ~HCuPINT_ATL; | |
817 | isp116x->irqenb |= HCuPINT_SOF; | |
818 | isp116x_write_reg16(isp116x, HCuPINTENB, | |
819 | isp116x->irqenb); | |
820 | } | |
821 | } | |
822 | ||
823 | /* in case of unlink-during-submit */ | |
824 | spin_lock(&urb->lock); | |
825 | if (urb->status != -EINPROGRESS) { | |
826 | spin_unlock(&urb->lock); | |
827 | finish_request(isp116x, ep, urb, NULL); | |
828 | ret = 0; | |
829 | goto fail; | |
830 | } | |
831 | urb->hcpriv = hep; | |
832 | spin_unlock(&urb->lock); | |
833 | start_atl_transfers(isp116x); | |
834 | ||
835 | fail: | |
836 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
837 | return ret; | |
838 | } | |
839 | ||
840 | /* | |
841 | Dequeue URBs. | |
842 | */ | |
843 | static int isp116x_urb_dequeue(struct usb_hcd *hcd, struct urb *urb) | |
844 | { | |
845 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
846 | struct usb_host_endpoint *hep; | |
847 | struct isp116x_ep *ep, *ep_act; | |
848 | unsigned long flags; | |
849 | ||
850 | spin_lock_irqsave(&isp116x->lock, flags); | |
851 | hep = urb->hcpriv; | |
852 | /* URB already unlinked (or never linked)? */ | |
853 | if (!hep) { | |
854 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
855 | return 0; | |
856 | } | |
857 | ep = hep->hcpriv; | |
858 | WARN_ON(hep != ep->hep); | |
859 | ||
860 | /* In front of queue? */ | |
861 | if (ep->hep->urb_list.next == &urb->urb_list) | |
862 | /* active? */ | |
863 | for (ep_act = isp116x->atl_active; ep_act; | |
864 | ep_act = ep_act->active) | |
865 | if (ep_act == ep) { | |
866 | VDBG("dequeue, urb %p active; wait for irq\n", | |
867 | urb); | |
868 | urb = NULL; | |
869 | break; | |
870 | } | |
871 | ||
872 | if (urb) | |
873 | finish_request(isp116x, ep, urb, NULL); | |
874 | ||
875 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
876 | return 0; | |
877 | } | |
878 | ||
879 | static void isp116x_endpoint_disable(struct usb_hcd *hcd, | |
880 | struct usb_host_endpoint *hep) | |
881 | { | |
882 | int i; | |
959eea21 | 883 | struct isp116x_ep *ep = hep->hcpriv; |
4808a1c0 OK |
884 | |
885 | if (!ep) | |
886 | return; | |
887 | ||
888 | /* assume we'd just wait for the irq */ | |
889 | for (i = 0; i < 100 && !list_empty(&hep->urb_list); i++) | |
890 | msleep(3); | |
891 | if (!list_empty(&hep->urb_list)) | |
892 | WARN("ep %p not empty?\n", ep); | |
893 | ||
894 | usb_put_dev(ep->udev); | |
895 | kfree(ep); | |
896 | hep->hcpriv = NULL; | |
897 | } | |
898 | ||
899 | static int isp116x_get_frame(struct usb_hcd *hcd) | |
900 | { | |
901 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
902 | u32 fmnum; | |
903 | unsigned long flags; | |
904 | ||
905 | spin_lock_irqsave(&isp116x->lock, flags); | |
906 | fmnum = isp116x_read_reg32(isp116x, HCFMNUM); | |
907 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
908 | return (int)fmnum; | |
909 | } | |
910 | ||
4808a1c0 OK |
911 | /* |
912 | Adapted from ohci-hub.c. Currently we don't support autosuspend. | |
913 | */ | |
914 | static int isp116x_hub_status_data(struct usb_hcd *hcd, char *buf) | |
915 | { | |
916 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
917 | int ports, i, changed = 0; | |
9a57116b | 918 | unsigned long flags; |
4808a1c0 OK |
919 | |
920 | if (!HC_IS_RUNNING(hcd->state)) | |
921 | return -ESHUTDOWN; | |
922 | ||
9a57116b OK |
923 | /* Report no status change now, if we are scheduled to be |
924 | called later */ | |
925 | if (timer_pending(&hcd->rh_timer)) | |
926 | return 0; | |
4808a1c0 | 927 | |
9a57116b OK |
928 | ports = isp116x->rhdesca & RH_A_NDP; |
929 | spin_lock_irqsave(&isp116x->lock, flags); | |
930 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); | |
4808a1c0 OK |
931 | if (isp116x->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) |
932 | buf[0] = changed = 1; | |
933 | else | |
934 | buf[0] = 0; | |
935 | ||
936 | for (i = 0; i < ports; i++) { | |
9a57116b OK |
937 | u32 status = isp116x->rhport[i] = |
938 | isp116x_read_reg32(isp116x, i ? HCRHPORT2 : HCRHPORT1); | |
4808a1c0 OK |
939 | |
940 | if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | |
941 | | RH_PS_OCIC | RH_PS_PRSC)) { | |
942 | changed = 1; | |
943 | buf[0] |= 1 << (i + 1); | |
944 | continue; | |
945 | } | |
946 | } | |
9a57116b | 947 | spin_unlock_irqrestore(&isp116x->lock, flags); |
4808a1c0 OK |
948 | return changed; |
949 | } | |
950 | ||
951 | static void isp116x_hub_descriptor(struct isp116x *isp116x, | |
952 | struct usb_hub_descriptor *desc) | |
953 | { | |
954 | u32 reg = isp116x->rhdesca; | |
955 | ||
956 | desc->bDescriptorType = 0x29; | |
957 | desc->bDescLength = 9; | |
958 | desc->bHubContrCurrent = 0; | |
959 | desc->bNbrPorts = (u8) (reg & 0x3); | |
960 | /* Power switching, device type, overcurrent. */ | |
959eea21 | 961 | desc->wHubCharacteristics = cpu_to_le16((u16) ((reg >> 8) & 0x1f)); |
4808a1c0 OK |
962 | desc->bPwrOn2PwrGood = (u8) ((reg >> 24) & 0xff); |
963 | /* two bitmaps: ports removable, and legacy PortPwrCtrlMask */ | |
959eea21 | 964 | desc->bitmap[0] = 0; |
4808a1c0 OK |
965 | desc->bitmap[1] = ~0; |
966 | } | |
967 | ||
968 | /* Perform reset of a given port. | |
969 | It would be great to just start the reset and let the | |
970 | USB core to clear the reset in due time. However, | |
971 | root hub ports should be reset for at least 50 ms, while | |
972 | our chip stays in reset for about 10 ms. I.e., we must | |
973 | repeatedly reset it ourself here. | |
974 | */ | |
975 | static inline void root_port_reset(struct isp116x *isp116x, unsigned port) | |
976 | { | |
977 | u32 tmp; | |
978 | unsigned long flags, t; | |
979 | ||
980 | /* Root hub reset should be 50 ms, but some devices | |
981 | want it even longer. */ | |
982 | t = jiffies + msecs_to_jiffies(100); | |
983 | ||
984 | while (time_before(jiffies, t)) { | |
985 | spin_lock_irqsave(&isp116x->lock, flags); | |
986 | /* spin until any current reset finishes */ | |
987 | for (;;) { | |
988 | tmp = isp116x_read_reg32(isp116x, port ? | |
989 | HCRHPORT2 : HCRHPORT1); | |
990 | if (!(tmp & RH_PS_PRS)) | |
991 | break; | |
992 | udelay(500); | |
993 | } | |
994 | /* Don't reset a disconnected port */ | |
995 | if (!(tmp & RH_PS_CCS)) { | |
996 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
997 | break; | |
998 | } | |
999 | /* Reset lasts 10ms (claims datasheet) */ | |
1000 | isp116x_write_reg32(isp116x, port ? HCRHPORT2 : | |
1001 | HCRHPORT1, (RH_PS_PRS)); | |
1002 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1003 | msleep(10); | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | /* Adapted from ohci-hub.c */ | |
1008 | static int isp116x_hub_control(struct usb_hcd *hcd, | |
1009 | u16 typeReq, | |
1010 | u16 wValue, u16 wIndex, char *buf, u16 wLength) | |
1011 | { | |
1012 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1013 | int ret = 0; | |
1014 | unsigned long flags; | |
1015 | int ports = isp116x->rhdesca & RH_A_NDP; | |
1016 | u32 tmp = 0; | |
1017 | ||
1018 | switch (typeReq) { | |
1019 | case ClearHubFeature: | |
1020 | DBG("ClearHubFeature: "); | |
1021 | switch (wValue) { | |
1022 | case C_HUB_OVER_CURRENT: | |
1023 | DBG("C_HUB_OVER_CURRENT\n"); | |
1024 | spin_lock_irqsave(&isp116x->lock, flags); | |
1025 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_OCIC); | |
1026 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1027 | case C_HUB_LOCAL_POWER: | |
1028 | DBG("C_HUB_LOCAL_POWER\n"); | |
1029 | break; | |
1030 | default: | |
1031 | goto error; | |
1032 | } | |
1033 | break; | |
1034 | case SetHubFeature: | |
1035 | DBG("SetHubFeature: "); | |
1036 | switch (wValue) { | |
1037 | case C_HUB_OVER_CURRENT: | |
1038 | case C_HUB_LOCAL_POWER: | |
1039 | DBG("C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); | |
1040 | break; | |
1041 | default: | |
1042 | goto error; | |
1043 | } | |
1044 | break; | |
1045 | case GetHubDescriptor: | |
1046 | DBG("GetHubDescriptor\n"); | |
1047 | isp116x_hub_descriptor(isp116x, | |
1048 | (struct usb_hub_descriptor *)buf); | |
1049 | break; | |
1050 | case GetHubStatus: | |
1051 | DBG("GetHubStatus\n"); | |
17f8bb73 | 1052 | *(__le32 *) buf = 0; |
4808a1c0 OK |
1053 | break; |
1054 | case GetPortStatus: | |
1055 | DBG("GetPortStatus\n"); | |
1056 | if (!wIndex || wIndex > ports) | |
1057 | goto error; | |
1058 | tmp = isp116x->rhport[--wIndex]; | |
1059 | *(__le32 *) buf = cpu_to_le32(tmp); | |
1060 | DBG("GetPortStatus: port[%d] %08x\n", wIndex + 1, tmp); | |
1061 | break; | |
1062 | case ClearPortFeature: | |
1063 | DBG("ClearPortFeature: "); | |
1064 | if (!wIndex || wIndex > ports) | |
1065 | goto error; | |
1066 | wIndex--; | |
1067 | ||
1068 | switch (wValue) { | |
1069 | case USB_PORT_FEAT_ENABLE: | |
1070 | DBG("USB_PORT_FEAT_ENABLE\n"); | |
1071 | tmp = RH_PS_CCS; | |
1072 | break; | |
1073 | case USB_PORT_FEAT_C_ENABLE: | |
1074 | DBG("USB_PORT_FEAT_C_ENABLE\n"); | |
1075 | tmp = RH_PS_PESC; | |
1076 | break; | |
1077 | case USB_PORT_FEAT_SUSPEND: | |
1078 | DBG("USB_PORT_FEAT_SUSPEND\n"); | |
1079 | tmp = RH_PS_POCI; | |
1080 | break; | |
1081 | case USB_PORT_FEAT_C_SUSPEND: | |
1082 | DBG("USB_PORT_FEAT_C_SUSPEND\n"); | |
1083 | tmp = RH_PS_PSSC; | |
1084 | break; | |
1085 | case USB_PORT_FEAT_POWER: | |
1086 | DBG("USB_PORT_FEAT_POWER\n"); | |
1087 | tmp = RH_PS_LSDA; | |
1088 | break; | |
1089 | case USB_PORT_FEAT_C_CONNECTION: | |
1090 | DBG("USB_PORT_FEAT_C_CONNECTION\n"); | |
1091 | tmp = RH_PS_CSC; | |
1092 | break; | |
1093 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
1094 | DBG("USB_PORT_FEAT_C_OVER_CURRENT\n"); | |
1095 | tmp = RH_PS_OCIC; | |
1096 | break; | |
1097 | case USB_PORT_FEAT_C_RESET: | |
1098 | DBG("USB_PORT_FEAT_C_RESET\n"); | |
1099 | tmp = RH_PS_PRSC; | |
1100 | break; | |
1101 | default: | |
1102 | goto error; | |
1103 | } | |
1104 | spin_lock_irqsave(&isp116x->lock, flags); | |
1105 | isp116x_write_reg32(isp116x, wIndex | |
1106 | ? HCRHPORT2 : HCRHPORT1, tmp); | |
1107 | isp116x->rhport[wIndex] = | |
1108 | isp116x_read_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1); | |
1109 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1110 | break; | |
1111 | case SetPortFeature: | |
1112 | DBG("SetPortFeature: "); | |
1113 | if (!wIndex || wIndex > ports) | |
1114 | goto error; | |
1115 | wIndex--; | |
1116 | switch (wValue) { | |
1117 | case USB_PORT_FEAT_SUSPEND: | |
1118 | DBG("USB_PORT_FEAT_SUSPEND\n"); | |
1119 | spin_lock_irqsave(&isp116x->lock, flags); | |
1120 | isp116x_write_reg32(isp116x, wIndex | |
1121 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PSS); | |
1122 | break; | |
1123 | case USB_PORT_FEAT_POWER: | |
1124 | DBG("USB_PORT_FEAT_POWER\n"); | |
1125 | spin_lock_irqsave(&isp116x->lock, flags); | |
1126 | isp116x_write_reg32(isp116x, wIndex | |
1127 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PPS); | |
1128 | break; | |
1129 | case USB_PORT_FEAT_RESET: | |
1130 | DBG("USB_PORT_FEAT_RESET\n"); | |
1131 | root_port_reset(isp116x, wIndex); | |
1132 | spin_lock_irqsave(&isp116x->lock, flags); | |
1133 | break; | |
1134 | default: | |
1135 | goto error; | |
1136 | } | |
1137 | isp116x->rhport[wIndex] = | |
1138 | isp116x_read_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1); | |
1139 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1140 | break; | |
1141 | ||
1142 | default: | |
1143 | error: | |
1144 | /* "protocol stall" on error */ | |
1145 | DBG("PROTOCOL STALL\n"); | |
1146 | ret = -EPIPE; | |
1147 | } | |
1148 | return ret; | |
1149 | } | |
1150 | ||
4808a1c0 OK |
1151 | /*-----------------------------------------------------------------*/ |
1152 | ||
959eea21 | 1153 | #ifdef CONFIG_DEBUG_FS |
4808a1c0 OK |
1154 | |
1155 | static void dump_irq(struct seq_file *s, char *label, u16 mask) | |
1156 | { | |
1157 | seq_printf(s, "%s %04x%s%s%s%s%s%s\n", label, mask, | |
1158 | mask & HCuPINT_CLKRDY ? " clkrdy" : "", | |
1159 | mask & HCuPINT_SUSP ? " susp" : "", | |
1160 | mask & HCuPINT_OPR ? " opr" : "", | |
1161 | mask & HCuPINT_AIIEOT ? " eot" : "", | |
1162 | mask & HCuPINT_ATL ? " atl" : "", | |
1163 | mask & HCuPINT_SOF ? " sof" : ""); | |
1164 | } | |
1165 | ||
1166 | static void dump_int(struct seq_file *s, char *label, u32 mask) | |
1167 | { | |
1168 | seq_printf(s, "%s %08x%s%s%s%s%s%s%s\n", label, mask, | |
1169 | mask & HCINT_MIE ? " MIE" : "", | |
1170 | mask & HCINT_RHSC ? " rhsc" : "", | |
1171 | mask & HCINT_FNO ? " fno" : "", | |
1172 | mask & HCINT_UE ? " ue" : "", | |
1173 | mask & HCINT_RD ? " rd" : "", | |
1174 | mask & HCINT_SF ? " sof" : "", mask & HCINT_SO ? " so" : ""); | |
1175 | } | |
1176 | ||
959eea21 | 1177 | static int isp116x_show_dbg(struct seq_file *s, void *unused) |
4808a1c0 OK |
1178 | { |
1179 | struct isp116x *isp116x = s->private; | |
4808a1c0 OK |
1180 | |
1181 | seq_printf(s, "%s\n%s version %s\n", | |
1182 | isp116x_to_hcd(isp116x)->product_desc, hcd_name, | |
1183 | DRIVER_VERSION); | |
1184 | ||
1185 | if (HC_IS_SUSPENDED(isp116x_to_hcd(isp116x)->state)) { | |
1186 | seq_printf(s, "HCD is suspended\n"); | |
1187 | return 0; | |
1188 | } | |
1189 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) { | |
1190 | seq_printf(s, "HCD not running\n"); | |
1191 | return 0; | |
1192 | } | |
1193 | ||
1194 | spin_lock_irq(&isp116x->lock); | |
4808a1c0 OK |
1195 | dump_irq(s, "hc_irq_enable", isp116x_read_reg16(isp116x, HCuPINTENB)); |
1196 | dump_irq(s, "hc_irq_status", isp116x_read_reg16(isp116x, HCuPINT)); | |
1197 | dump_int(s, "hc_int_enable", isp116x_read_reg32(isp116x, HCINTENB)); | |
1198 | dump_int(s, "hc_int_status", isp116x_read_reg32(isp116x, HCINTSTAT)); | |
959eea21 | 1199 | isp116x_show_regs_seq(isp116x, s); |
4808a1c0 OK |
1200 | spin_unlock_irq(&isp116x->lock); |
1201 | seq_printf(s, "\n"); | |
1202 | ||
1203 | return 0; | |
1204 | } | |
1205 | ||
959eea21 | 1206 | static int isp116x_open_seq(struct inode *inode, struct file *file) |
4808a1c0 | 1207 | { |
959eea21 | 1208 | return single_open(file, isp116x_show_dbg, inode->u.generic_ip); |
4808a1c0 OK |
1209 | } |
1210 | ||
959eea21 OK |
1211 | static struct file_operations isp116x_debug_fops = { |
1212 | .open = isp116x_open_seq, | |
4808a1c0 OK |
1213 | .read = seq_read, |
1214 | .llseek = seq_lseek, | |
1215 | .release = single_release, | |
1216 | }; | |
1217 | ||
959eea21 | 1218 | static int create_debug_file(struct isp116x *isp116x) |
4808a1c0 | 1219 | { |
959eea21 OK |
1220 | isp116x->dentry = debugfs_create_file(hcd_name, |
1221 | S_IRUGO, NULL, isp116x, | |
1222 | &isp116x_debug_fops); | |
1223 | if (!isp116x->dentry) | |
1224 | return -ENOMEM; | |
1225 | return 0; | |
4808a1c0 OK |
1226 | } |
1227 | ||
1228 | static void remove_debug_file(struct isp116x *isp116x) | |
1229 | { | |
959eea21 | 1230 | debugfs_remove(isp116x->dentry); |
4808a1c0 OK |
1231 | } |
1232 | ||
959eea21 OK |
1233 | #else |
1234 | ||
1235 | #define create_debug_file(d) 0 | |
1236 | #define remove_debug_file(d) do{}while(0) | |
1237 | ||
1238 | #endif /* CONFIG_DEBUG_FS */ | |
4808a1c0 OK |
1239 | |
1240 | /*-----------------------------------------------------------------*/ | |
1241 | ||
1242 | /* | |
1243 | Software reset - can be called from any contect. | |
1244 | */ | |
1245 | static int isp116x_sw_reset(struct isp116x *isp116x) | |
1246 | { | |
1247 | int retries = 15; | |
1248 | unsigned long flags; | |
1249 | int ret = 0; | |
1250 | ||
1251 | spin_lock_irqsave(&isp116x->lock, flags); | |
1252 | isp116x_write_reg16(isp116x, HCSWRES, HCSWRES_MAGIC); | |
1253 | isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR); | |
1254 | while (--retries) { | |
1255 | /* It usually resets within 1 ms */ | |
1256 | mdelay(1); | |
1257 | if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR)) | |
1258 | break; | |
1259 | } | |
1260 | if (!retries) { | |
1261 | ERR("Software reset timeout\n"); | |
1262 | ret = -ETIME; | |
1263 | } | |
1264 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1265 | return ret; | |
1266 | } | |
1267 | ||
4808a1c0 OK |
1268 | static int isp116x_reset(struct usb_hcd *hcd) |
1269 | { | |
1270 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1271 | unsigned long t; | |
1272 | u16 clkrdy = 0; | |
959eea21 | 1273 | int ret, timeout = 15 /* ms */ ; |
4808a1c0 | 1274 | |
f8d23d30 | 1275 | ret = isp116x_sw_reset(isp116x); |
4808a1c0 OK |
1276 | if (ret) |
1277 | return ret; | |
1278 | ||
1279 | t = jiffies + msecs_to_jiffies(timeout); | |
1280 | while (time_before_eq(jiffies, t)) { | |
1281 | msleep(4); | |
1282 | spin_lock_irq(&isp116x->lock); | |
1283 | clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY; | |
1284 | spin_unlock_irq(&isp116x->lock); | |
1285 | if (clkrdy) | |
1286 | break; | |
1287 | } | |
1288 | if (!clkrdy) { | |
959eea21 | 1289 | ERR("Clock not ready after %dms\n", timeout); |
589a0083 OK |
1290 | /* After sw_reset the clock won't report to be ready, if |
1291 | H_WAKEUP pin is high. */ | |
f8d23d30 | 1292 | ERR("Please make sure that the H_WAKEUP pin is pulled low!\n"); |
4808a1c0 OK |
1293 | ret = -ENODEV; |
1294 | } | |
1295 | return ret; | |
1296 | } | |
1297 | ||
1298 | static void isp116x_stop(struct usb_hcd *hcd) | |
1299 | { | |
1300 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1301 | unsigned long flags; | |
1302 | u32 val; | |
1303 | ||
1304 | spin_lock_irqsave(&isp116x->lock, flags); | |
1305 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
1306 | ||
1307 | /* Switch off ports' power, some devices don't come up | |
1308 | after next 'insmod' without this */ | |
1309 | val = isp116x_read_reg32(isp116x, HCRHDESCA); | |
1310 | val &= ~(RH_A_NPS | RH_A_PSM); | |
1311 | isp116x_write_reg32(isp116x, HCRHDESCA, val); | |
1312 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS); | |
1313 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1314 | ||
f8d23d30 | 1315 | isp116x_sw_reset(isp116x); |
4808a1c0 OK |
1316 | } |
1317 | ||
1318 | /* | |
1319 | Configure the chip. The chip must be successfully reset by now. | |
1320 | */ | |
1321 | static int isp116x_start(struct usb_hcd *hcd) | |
1322 | { | |
1323 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1324 | struct isp116x_platform_data *board = isp116x->board; | |
4808a1c0 OK |
1325 | u32 val; |
1326 | unsigned long flags; | |
1327 | ||
1328 | spin_lock_irqsave(&isp116x->lock, flags); | |
1329 | ||
1330 | /* clear interrupt status and disable all interrupt sources */ | |
1331 | isp116x_write_reg16(isp116x, HCuPINT, 0xff); | |
1332 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
1333 | ||
1334 | val = isp116x_read_reg16(isp116x, HCCHIPID); | |
1335 | if ((val & HCCHIPID_MASK) != HCCHIPID_MAGIC) { | |
1336 | ERR("Invalid chip ID %04x\n", val); | |
1337 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1338 | return -ENODEV; | |
1339 | } | |
1340 | ||
9a57116b OK |
1341 | /* To be removed in future */ |
1342 | hcd->uses_new_polling = 1; | |
1343 | ||
4808a1c0 OK |
1344 | isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE); |
1345 | isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE); | |
1346 | ||
1347 | /* ----- HW conf */ | |
1348 | val = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); | |
1349 | if (board->sel15Kres) | |
1350 | val |= HCHWCFG_15KRSEL; | |
1351 | /* Remote wakeup won't work without working clock */ | |
d4d62861 | 1352 | if (board->remote_wakeup_enable) |
4808a1c0 OK |
1353 | val |= HCHWCFG_CLKNOTSTOP; |
1354 | if (board->oc_enable) | |
1355 | val |= HCHWCFG_ANALOG_OC; | |
1356 | if (board->int_act_high) | |
1357 | val |= HCHWCFG_INT_POL; | |
1358 | if (board->int_edge_triggered) | |
1359 | val |= HCHWCFG_INT_TRIGGER; | |
1360 | isp116x_write_reg16(isp116x, HCHWCFG, val); | |
1361 | ||
1362 | /* ----- Root hub conf */ | |
dc5bed09 | 1363 | val = (25 << 24) & RH_A_POTPGT; |
165c0f39 OK |
1364 | /* AN10003_1.pdf recommends RH_A_NPS (no power switching) to |
1365 | be always set. Yet, instead, we request individual port | |
1366 | power switching. */ | |
1367 | val |= RH_A_PSM; | |
9d233d9f OK |
1368 | /* Report overcurrent per port */ |
1369 | val |= RH_A_OCPM; | |
4808a1c0 OK |
1370 | isp116x_write_reg32(isp116x, HCRHDESCA, val); |
1371 | isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA); | |
1372 | ||
1373 | val = RH_B_PPCM; | |
1374 | isp116x_write_reg32(isp116x, HCRHDESCB, val); | |
1375 | isp116x->rhdescb = isp116x_read_reg32(isp116x, HCRHDESCB); | |
1376 | ||
1377 | val = 0; | |
1378 | if (board->remote_wakeup_enable) { | |
704aa0b7 DB |
1379 | if (!device_can_wakeup(hcd->self.controller)) |
1380 | device_init_wakeup(hcd->self.controller, 1); | |
4808a1c0 OK |
1381 | val |= RH_HS_DRWE; |
1382 | } | |
1383 | isp116x_write_reg32(isp116x, HCRHSTATUS, val); | |
1384 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); | |
1385 | ||
1386 | isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf); | |
4808a1c0 | 1387 | |
4808a1c0 OK |
1388 | hcd->state = HC_STATE_RUNNING; |
1389 | ||
4808a1c0 OK |
1390 | /* Set up interrupts */ |
1391 | isp116x->intenb = HCINT_MIE | HCINT_RHSC | HCINT_UE; | |
1392 | if (board->remote_wakeup_enable) | |
1393 | isp116x->intenb |= HCINT_RD; | |
1394 | isp116x->irqenb = HCuPINT_ATL | HCuPINT_OPR; /* | HCuPINT_SUSP; */ | |
1395 | isp116x_write_reg32(isp116x, HCINTENB, isp116x->intenb); | |
1396 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); | |
1397 | ||
1398 | /* Go operational */ | |
1399 | val = HCCONTROL_USB_OPER; | |
4808a1c0 OK |
1400 | if (board->remote_wakeup_enable) |
1401 | val |= HCCONTROL_RWE; | |
1402 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1403 | ||
1404 | /* Disable ports to avoid race in device enumeration */ | |
1405 | isp116x_write_reg32(isp116x, HCRHPORT1, RH_PS_CCS); | |
1406 | isp116x_write_reg32(isp116x, HCRHPORT2, RH_PS_CCS); | |
1407 | ||
959eea21 | 1408 | isp116x_show_regs_log(isp116x); |
4808a1c0 OK |
1409 | spin_unlock_irqrestore(&isp116x->lock, flags); |
1410 | return 0; | |
1411 | } | |
1412 | ||
959eea21 OK |
1413 | #ifdef CONFIG_PM |
1414 | ||
1415 | static int isp116x_bus_suspend(struct usb_hcd *hcd) | |
1416 | { | |
1417 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1418 | unsigned long flags; | |
1419 | u32 val; | |
1420 | int ret = 0; | |
1421 | ||
1422 | spin_lock_irqsave(&isp116x->lock, flags); | |
1423 | ||
1424 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1425 | switch (val & HCCONTROL_HCFS) { | |
1426 | case HCCONTROL_USB_OPER: | |
959eea21 OK |
1427 | val &= (~HCCONTROL_HCFS & ~HCCONTROL_RWE); |
1428 | val |= HCCONTROL_USB_SUSPEND; | |
704aa0b7 | 1429 | if (device_may_wakeup(&hcd->self.root_hub->dev)) |
959eea21 OK |
1430 | val |= HCCONTROL_RWE; |
1431 | /* Wait for usb transfers to finish */ | |
1432 | mdelay(2); | |
1433 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
959eea21 OK |
1434 | /* Wait for devices to suspend */ |
1435 | mdelay(5); | |
1436 | case HCCONTROL_USB_SUSPEND: | |
1437 | break; | |
1438 | case HCCONTROL_USB_RESUME: | |
1439 | isp116x_write_reg32(isp116x, HCCONTROL, | |
1440 | (val & ~HCCONTROL_HCFS) | | |
1441 | HCCONTROL_USB_RESET); | |
1442 | case HCCONTROL_USB_RESET: | |
1443 | ret = -EBUSY; | |
1444 | break; | |
1445 | default: | |
1446 | ret = -EINVAL; | |
1447 | } | |
1448 | ||
1449 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1450 | return ret; | |
1451 | } | |
1452 | ||
1453 | static int isp116x_bus_resume(struct usb_hcd *hcd) | |
1454 | { | |
1455 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1456 | u32 val; | |
1457 | ||
1458 | msleep(5); | |
1459 | spin_lock_irq(&isp116x->lock); | |
1460 | ||
1461 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1462 | switch (val & HCCONTROL_HCFS) { | |
1463 | case HCCONTROL_USB_SUSPEND: | |
1464 | val &= ~HCCONTROL_HCFS; | |
1465 | val |= HCCONTROL_USB_RESUME; | |
1466 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1467 | case HCCONTROL_USB_RESUME: | |
1468 | break; | |
1469 | case HCCONTROL_USB_OPER: | |
1470 | spin_unlock_irq(&isp116x->lock); | |
1471 | /* Without setting power_state here the | |
1472 | SUSPENDED state won't be removed from | |
1473 | sysfs/usbN/power.state as a response to remote | |
1474 | wakeup. Maybe in the future. */ | |
1475 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; | |
1476 | return 0; | |
1477 | default: | |
1478 | /* HCCONTROL_USB_RESET: this may happen, when during | |
1479 | suspension the HC lost power. Reinitialize completely */ | |
1480 | spin_unlock_irq(&isp116x->lock); | |
1481 | DBG("Chip has been reset while suspended. Reinit from scratch.\n"); | |
1482 | isp116x_reset(hcd); | |
1483 | isp116x_start(hcd); | |
1484 | isp116x_hub_control(hcd, SetPortFeature, | |
1485 | USB_PORT_FEAT_POWER, 1, NULL, 0); | |
1486 | if ((isp116x->rhdesca & RH_A_NDP) == 2) | |
1487 | isp116x_hub_control(hcd, SetPortFeature, | |
1488 | USB_PORT_FEAT_POWER, 2, NULL, 0); | |
1489 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; | |
1490 | return 0; | |
1491 | } | |
1492 | ||
1493 | val = isp116x->rhdesca & RH_A_NDP; | |
1494 | while (val--) { | |
1495 | u32 stat = | |
1496 | isp116x_read_reg32(isp116x, val ? HCRHPORT2 : HCRHPORT1); | |
1497 | /* force global, not selective, resume */ | |
1498 | if (!(stat & RH_PS_PSS)) | |
1499 | continue; | |
1500 | DBG("%s: Resuming port %d\n", __func__, val); | |
1501 | isp116x_write_reg32(isp116x, RH_PS_POCI, val | |
1502 | ? HCRHPORT2 : HCRHPORT1); | |
1503 | } | |
1504 | spin_unlock_irq(&isp116x->lock); | |
1505 | ||
1506 | hcd->state = HC_STATE_RESUMING; | |
1507 | msleep(20); | |
1508 | ||
1509 | /* Go operational */ | |
1510 | spin_lock_irq(&isp116x->lock); | |
1511 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1512 | isp116x_write_reg32(isp116x, HCCONTROL, | |
1513 | (val & ~HCCONTROL_HCFS) | HCCONTROL_USB_OPER); | |
1514 | spin_unlock_irq(&isp116x->lock); | |
1515 | /* see analogous comment above */ | |
1516 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; | |
1517 | hcd->state = HC_STATE_RUNNING; | |
1518 | ||
1519 | return 0; | |
1520 | } | |
1521 | ||
1522 | #else | |
1523 | ||
1524 | #define isp116x_bus_suspend NULL | |
1525 | #define isp116x_bus_resume NULL | |
1526 | ||
1527 | #endif | |
4808a1c0 OK |
1528 | |
1529 | static struct hc_driver isp116x_hc_driver = { | |
1530 | .description = hcd_name, | |
1531 | .product_desc = "ISP116x Host Controller", | |
1532 | .hcd_priv_size = sizeof(struct isp116x), | |
1533 | ||
1534 | .irq = isp116x_irq, | |
1535 | .flags = HCD_USB11, | |
1536 | ||
1537 | .reset = isp116x_reset, | |
1538 | .start = isp116x_start, | |
1539 | .stop = isp116x_stop, | |
1540 | ||
1541 | .urb_enqueue = isp116x_urb_enqueue, | |
1542 | .urb_dequeue = isp116x_urb_dequeue, | |
1543 | .endpoint_disable = isp116x_endpoint_disable, | |
1544 | ||
1545 | .get_frame_number = isp116x_get_frame, | |
1546 | ||
1547 | .hub_status_data = isp116x_hub_status_data, | |
1548 | .hub_control = isp116x_hub_control, | |
0c0382e3 AS |
1549 | .bus_suspend = isp116x_bus_suspend, |
1550 | .bus_resume = isp116x_bus_resume, | |
4808a1c0 OK |
1551 | }; |
1552 | ||
1553 | /*----------------------------------------------------------------*/ | |
1554 | ||
3ae5eaec | 1555 | static int __init_or_module isp116x_remove(struct platform_device *pdev) |
4808a1c0 | 1556 | { |
3ae5eaec | 1557 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
589a0083 | 1558 | struct isp116x *isp116x; |
4808a1c0 OK |
1559 | struct resource *res; |
1560 | ||
9a57116b | 1561 | if (!hcd) |
589a0083 OK |
1562 | return 0; |
1563 | isp116x = hcd_to_isp116x(hcd); | |
4808a1c0 OK |
1564 | remove_debug_file(isp116x); |
1565 | usb_remove_hcd(hcd); | |
1566 | ||
1567 | iounmap(isp116x->data_reg); | |
1568 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1569 | release_mem_region(res->start, 2); | |
1570 | iounmap(isp116x->addr_reg); | |
1571 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1572 | release_mem_region(res->start, 2); | |
1573 | ||
1574 | usb_put_hcd(hcd); | |
1575 | return 0; | |
1576 | } | |
1577 | ||
1578 | #define resource_len(r) (((r)->end - (r)->start) + 1) | |
1579 | ||
3ae5eaec | 1580 | static int __init isp116x_probe(struct platform_device *pdev) |
4808a1c0 OK |
1581 | { |
1582 | struct usb_hcd *hcd; | |
1583 | struct isp116x *isp116x; | |
4808a1c0 OK |
1584 | struct resource *addr, *data; |
1585 | void __iomem *addr_reg; | |
1586 | void __iomem *data_reg; | |
1587 | int irq; | |
1588 | int ret = 0; | |
1589 | ||
4808a1c0 OK |
1590 | if (pdev->num_resources < 3) { |
1591 | ret = -ENODEV; | |
1592 | goto err1; | |
1593 | } | |
1594 | ||
1595 | data = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1596 | addr = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1597 | irq = platform_get_irq(pdev, 0); | |
1598 | if (!addr || !data || irq < 0) { | |
1599 | ret = -ENODEV; | |
1600 | goto err1; | |
1601 | } | |
1602 | ||
3ae5eaec | 1603 | if (pdev->dev.dma_mask) { |
4808a1c0 OK |
1604 | DBG("DMA not supported\n"); |
1605 | ret = -EINVAL; | |
1606 | goto err1; | |
1607 | } | |
1608 | ||
1609 | if (!request_mem_region(addr->start, 2, hcd_name)) { | |
1610 | ret = -EBUSY; | |
1611 | goto err1; | |
1612 | } | |
1613 | addr_reg = ioremap(addr->start, resource_len(addr)); | |
1614 | if (addr_reg == NULL) { | |
1615 | ret = -ENOMEM; | |
1616 | goto err2; | |
1617 | } | |
1618 | if (!request_mem_region(data->start, 2, hcd_name)) { | |
1619 | ret = -EBUSY; | |
1620 | goto err3; | |
1621 | } | |
1622 | data_reg = ioremap(data->start, resource_len(data)); | |
1623 | if (data_reg == NULL) { | |
1624 | ret = -ENOMEM; | |
1625 | goto err4; | |
1626 | } | |
1627 | ||
1628 | /* allocate and initialize hcd */ | |
3ae5eaec | 1629 | hcd = usb_create_hcd(&isp116x_hc_driver, &pdev->dev, pdev->dev.bus_id); |
4808a1c0 OK |
1630 | if (!hcd) { |
1631 | ret = -ENOMEM; | |
1632 | goto err5; | |
1633 | } | |
1634 | /* this rsrc_start is bogus */ | |
1635 | hcd->rsrc_start = addr->start; | |
1636 | isp116x = hcd_to_isp116x(hcd); | |
1637 | isp116x->data_reg = data_reg; | |
1638 | isp116x->addr_reg = addr_reg; | |
1639 | spin_lock_init(&isp116x->lock); | |
1640 | INIT_LIST_HEAD(&isp116x->async); | |
3ae5eaec | 1641 | isp116x->board = pdev->dev.platform_data; |
4808a1c0 OK |
1642 | |
1643 | if (!isp116x->board) { | |
1644 | ERR("Platform data structure not initialized\n"); | |
1645 | ret = -ENODEV; | |
1646 | goto err6; | |
1647 | } | |
1648 | if (isp116x_check_platform_delay(isp116x)) { | |
1649 | ERR("USE_PLATFORM_DELAY defined, but delay function not " | |
1650 | "implemented.\n"); | |
1651 | ERR("See comments in drivers/usb/host/isp116x-hcd.c\n"); | |
1652 | ret = -ENODEV; | |
1653 | goto err6; | |
1654 | } | |
1655 | ||
1656 | ret = usb_add_hcd(hcd, irq, SA_INTERRUPT); | |
959eea21 | 1657 | if (ret) |
4808a1c0 OK |
1658 | goto err6; |
1659 | ||
959eea21 OK |
1660 | ret = create_debug_file(isp116x); |
1661 | if (ret) { | |
1662 | ERR("Couldn't create debugfs entry\n"); | |
1663 | goto err7; | |
1664 | } | |
1665 | ||
4808a1c0 OK |
1666 | return 0; |
1667 | ||
959eea21 OK |
1668 | err7: |
1669 | usb_remove_hcd(hcd); | |
4808a1c0 OK |
1670 | err6: |
1671 | usb_put_hcd(hcd); | |
1672 | err5: | |
1673 | iounmap(data_reg); | |
1674 | err4: | |
1675 | release_mem_region(data->start, 2); | |
1676 | err3: | |
1677 | iounmap(addr_reg); | |
1678 | err2: | |
1679 | release_mem_region(addr->start, 2); | |
1680 | err1: | |
1681 | ERR("init error, %d\n", ret); | |
1682 | return ret; | |
1683 | } | |
1684 | ||
1685 | #ifdef CONFIG_PM | |
1686 | /* | |
1687 | Suspend of platform device | |
1688 | */ | |
3ae5eaec | 1689 | static int isp116x_suspend(struct platform_device *dev, pm_message_t state) |
4808a1c0 | 1690 | { |
959eea21 | 1691 | VDBG("%s: state %x\n", __func__, state.event); |
3ae5eaec | 1692 | dev->dev.power.power_state = state; |
959eea21 | 1693 | return 0; |
4808a1c0 OK |
1694 | } |
1695 | ||
1696 | /* | |
1697 | Resume platform device | |
1698 | */ | |
3ae5eaec | 1699 | static int isp116x_resume(struct platform_device *dev) |
4808a1c0 | 1700 | { |
959eea21 | 1701 | VDBG("%s: state %x\n", __func__, dev->power.power_state.event); |
3ae5eaec | 1702 | dev->dev.power.power_state = PMSG_ON; |
959eea21 | 1703 | return 0; |
4808a1c0 OK |
1704 | } |
1705 | ||
1706 | #else | |
1707 | ||
1708 | #define isp116x_suspend NULL | |
1709 | #define isp116x_resume NULL | |
1710 | ||
1711 | #endif | |
1712 | ||
3ae5eaec | 1713 | static struct platform_driver isp116x_driver = { |
4808a1c0 OK |
1714 | .probe = isp116x_probe, |
1715 | .remove = isp116x_remove, | |
1716 | .suspend = isp116x_suspend, | |
1717 | .resume = isp116x_resume, | |
3ae5eaec RK |
1718 | .driver = { |
1719 | .name = (char *)hcd_name, | |
1720 | }, | |
4808a1c0 OK |
1721 | }; |
1722 | ||
1723 | /*-----------------------------------------------------------------*/ | |
1724 | ||
1725 | static int __init isp116x_init(void) | |
1726 | { | |
1727 | if (usb_disabled()) | |
1728 | return -ENODEV; | |
1729 | ||
1730 | INFO("driver %s, %s\n", hcd_name, DRIVER_VERSION); | |
3ae5eaec | 1731 | return platform_driver_register(&isp116x_driver); |
4808a1c0 OK |
1732 | } |
1733 | ||
1734 | module_init(isp116x_init); | |
1735 | ||
1736 | static void __exit isp116x_cleanup(void) | |
1737 | { | |
3ae5eaec | 1738 | platform_driver_unregister(&isp116x_driver); |
4808a1c0 OK |
1739 | } |
1740 | ||
1741 | module_exit(isp116x_cleanup); |