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 | ||
58 | #include <linux/config.h> | |
59 | #include <linux/module.h> | |
60 | #include <linux/moduleparam.h> | |
61 | #include <linux/kernel.h> | |
62 | #include <linux/delay.h> | |
63 | #include <linux/ioport.h> | |
64 | #include <linux/sched.h> | |
65 | #include <linux/slab.h> | |
66 | #include <linux/smp_lock.h> | |
67 | #include <linux/errno.h> | |
68 | #include <linux/init.h> | |
69 | #include <linux/list.h> | |
70 | #include <linux/interrupt.h> | |
71 | #include <linux/usb.h> | |
72 | #include <linux/usb_isp116x.h> | |
73 | ||
74 | #include <asm/io.h> | |
75 | #include <asm/irq.h> | |
76 | #include <asm/system.h> | |
77 | #include <asm/byteorder.h> | |
78 | ||
79 | #ifndef DEBUG | |
80 | # define STUB_DEBUG_FILE | |
81 | #endif | |
82 | ||
83 | #include "../core/hcd.h" | |
84 | #include "isp116x.h" | |
85 | ||
9a57116b | 86 | #define DRIVER_VERSION "05 Aug 2005" |
4808a1c0 OK |
87 | #define DRIVER_DESC "ISP116x USB Host Controller Driver" |
88 | ||
89 | MODULE_DESCRIPTION(DRIVER_DESC); | |
90 | MODULE_LICENSE("GPL"); | |
91 | ||
92 | static const char hcd_name[] = "isp116x-hcd"; | |
93 | ||
94 | /*-----------------------------------------------------------------*/ | |
95 | ||
96 | /* | |
97 | Write len bytes to fifo, pad till 32-bit boundary | |
98 | */ | |
99 | static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len) | |
100 | { | |
101 | u8 *dp = (u8 *) buf; | |
102 | u16 *dp2 = (u16 *) buf; | |
103 | u16 w; | |
104 | int quot = len % 4; | |
105 | ||
106 | if ((unsigned long)dp2 & 1) { | |
107 | /* not aligned */ | |
108 | for (; len > 1; len -= 2) { | |
109 | w = *dp++; | |
110 | w |= *dp++ << 8; | |
111 | isp116x_raw_write_data16(isp116x, w); | |
112 | } | |
113 | if (len) | |
114 | isp116x_write_data16(isp116x, (u16) * dp); | |
115 | } else { | |
116 | /* aligned */ | |
117 | for (; len > 1; len -= 2) | |
118 | isp116x_raw_write_data16(isp116x, *dp2++); | |
119 | if (len) | |
120 | isp116x_write_data16(isp116x, 0xff & *((u8 *) dp2)); | |
121 | } | |
122 | if (quot == 1 || quot == 2) | |
123 | isp116x_raw_write_data16(isp116x, 0); | |
124 | } | |
125 | ||
126 | /* | |
127 | Read len bytes from fifo and then read till 32-bit boundary. | |
128 | */ | |
129 | static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len) | |
130 | { | |
131 | u8 *dp = (u8 *) buf; | |
132 | u16 *dp2 = (u16 *) buf; | |
133 | u16 w; | |
134 | int quot = len % 4; | |
135 | ||
136 | if ((unsigned long)dp2 & 1) { | |
137 | /* not aligned */ | |
138 | for (; len > 1; len -= 2) { | |
139 | w = isp116x_raw_read_data16(isp116x); | |
140 | *dp++ = w & 0xff; | |
141 | *dp++ = (w >> 8) & 0xff; | |
142 | } | |
143 | if (len) | |
144 | *dp = 0xff & isp116x_read_data16(isp116x); | |
145 | } else { | |
146 | /* aligned */ | |
147 | for (; len > 1; len -= 2) | |
148 | *dp2++ = isp116x_raw_read_data16(isp116x); | |
149 | if (len) | |
150 | *(u8 *) dp2 = 0xff & isp116x_read_data16(isp116x); | |
151 | } | |
152 | if (quot == 1 || quot == 2) | |
153 | isp116x_raw_read_data16(isp116x); | |
154 | } | |
155 | ||
156 | /* | |
157 | Write ptd's and data for scheduled transfers into | |
158 | the fifo ram. Fifo must be empty and ready. | |
159 | */ | |
160 | static void pack_fifo(struct isp116x *isp116x) | |
161 | { | |
162 | struct isp116x_ep *ep; | |
163 | struct ptd *ptd; | |
164 | int buflen = isp116x->atl_last_dir == PTD_DIR_IN | |
165 | ? isp116x->atl_bufshrt : isp116x->atl_buflen; | |
166 | int ptd_count = 0; | |
167 | ||
168 | isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT); | |
169 | isp116x_write_reg16(isp116x, HCXFERCTR, buflen); | |
170 | isp116x_write_addr(isp116x, HCATLPORT | ISP116x_WRITE_OFFSET); | |
171 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
172 | ++ptd_count; | |
173 | ptd = &ep->ptd; | |
174 | dump_ptd(ptd); | |
175 | dump_ptd_out_data(ptd, ep->data); | |
176 | isp116x_write_data16(isp116x, ptd->count); | |
177 | isp116x_write_data16(isp116x, ptd->mps); | |
178 | isp116x_write_data16(isp116x, ptd->len); | |
179 | isp116x_write_data16(isp116x, ptd->faddr); | |
180 | buflen -= sizeof(struct ptd); | |
181 | /* Skip writing data for last IN PTD */ | |
182 | if (ep->active || (isp116x->atl_last_dir != PTD_DIR_IN)) { | |
183 | write_ptddata_to_fifo(isp116x, ep->data, ep->length); | |
184 | buflen -= ALIGN(ep->length, 4); | |
185 | } | |
186 | } | |
187 | BUG_ON(buflen); | |
188 | } | |
189 | ||
190 | /* | |
191 | Read the processed ptd's and data from fifo ram back to | |
192 | URBs' buffers. Fifo must be full and done | |
193 | */ | |
194 | static void unpack_fifo(struct isp116x *isp116x) | |
195 | { | |
196 | struct isp116x_ep *ep; | |
197 | struct ptd *ptd; | |
198 | int buflen = isp116x->atl_last_dir == PTD_DIR_IN | |
199 | ? isp116x->atl_buflen : isp116x->atl_bufshrt; | |
200 | ||
201 | isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT); | |
202 | isp116x_write_reg16(isp116x, HCXFERCTR, buflen); | |
203 | isp116x_write_addr(isp116x, HCATLPORT); | |
204 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
205 | ptd = &ep->ptd; | |
206 | ptd->count = isp116x_read_data16(isp116x); | |
207 | ptd->mps = isp116x_read_data16(isp116x); | |
208 | ptd->len = isp116x_read_data16(isp116x); | |
209 | ptd->faddr = isp116x_read_data16(isp116x); | |
210 | buflen -= sizeof(struct ptd); | |
211 | /* Skip reading data for last Setup or Out PTD */ | |
212 | if (ep->active || (isp116x->atl_last_dir == PTD_DIR_IN)) { | |
213 | read_ptddata_from_fifo(isp116x, ep->data, ep->length); | |
214 | buflen -= ALIGN(ep->length, 4); | |
215 | } | |
216 | dump_ptd(ptd); | |
217 | dump_ptd_in_data(ptd, ep->data); | |
218 | } | |
219 | BUG_ON(buflen); | |
220 | } | |
221 | ||
222 | /*---------------------------------------------------------------*/ | |
223 | ||
224 | /* | |
225 | Set up PTD's. | |
226 | */ | |
227 | static void preproc_atl_queue(struct isp116x *isp116x) | |
228 | { | |
229 | struct isp116x_ep *ep; | |
230 | struct urb *urb; | |
231 | struct ptd *ptd; | |
f10eff26 | 232 | u16 len; |
4808a1c0 OK |
233 | |
234 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
f10eff26 OK |
235 | u16 toggle = 0, dir = PTD_DIR_SETUP; |
236 | ||
4808a1c0 OK |
237 | BUG_ON(list_empty(&ep->hep->urb_list)); |
238 | urb = container_of(ep->hep->urb_list.next, | |
239 | struct urb, urb_list); | |
240 | ptd = &ep->ptd; | |
241 | len = ep->length; | |
242 | spin_lock(&urb->lock); | |
243 | ep->data = (unsigned char *)urb->transfer_buffer | |
244 | + urb->actual_length; | |
245 | ||
246 | switch (ep->nextpid) { | |
247 | case USB_PID_IN: | |
248 | toggle = usb_gettoggle(urb->dev, ep->epnum, 0); | |
249 | dir = PTD_DIR_IN; | |
250 | break; | |
251 | case USB_PID_OUT: | |
252 | toggle = usb_gettoggle(urb->dev, ep->epnum, 1); | |
253 | dir = PTD_DIR_OUT; | |
254 | break; | |
255 | case USB_PID_SETUP: | |
4808a1c0 OK |
256 | len = sizeof(struct usb_ctrlrequest); |
257 | ep->data = urb->setup_packet; | |
258 | break; | |
259 | case USB_PID_ACK: | |
260 | toggle = 1; | |
261 | len = 0; | |
262 | dir = (urb->transfer_buffer_length | |
263 | && usb_pipein(urb->pipe)) | |
264 | ? PTD_DIR_OUT : PTD_DIR_IN; | |
265 | break; | |
266 | default: | |
4808a1c0 OK |
267 | ERR("%s %d: ep->nextpid %d\n", __func__, __LINE__, |
268 | ep->nextpid); | |
17f8bb73 | 269 | BUG(); |
4808a1c0 OK |
270 | } |
271 | ||
272 | ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); | |
273 | ptd->mps = PTD_MPS(ep->maxpacket) | |
274 | | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | |
275 | | PTD_EP(ep->epnum); | |
276 | ptd->len = PTD_LEN(len) | PTD_DIR(dir); | |
277 | ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); | |
278 | spin_unlock(&urb->lock); | |
279 | if (!ep->active) { | |
280 | ptd->mps |= PTD_LAST_MSK; | |
281 | isp116x->atl_last_dir = dir; | |
282 | } | |
283 | isp116x->atl_bufshrt = sizeof(struct ptd) + isp116x->atl_buflen; | |
284 | isp116x->atl_buflen = isp116x->atl_bufshrt + ALIGN(len, 4); | |
285 | } | |
286 | } | |
287 | ||
288 | /* | |
289 | Analyze transfer results, handle partial transfers and errors | |
290 | */ | |
291 | static void postproc_atl_queue(struct isp116x *isp116x) | |
292 | { | |
293 | struct isp116x_ep *ep; | |
294 | struct urb *urb; | |
295 | struct usb_device *udev; | |
296 | struct ptd *ptd; | |
297 | int short_not_ok; | |
298 | u8 cc; | |
299 | ||
300 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
301 | BUG_ON(list_empty(&ep->hep->urb_list)); | |
302 | urb = | |
303 | container_of(ep->hep->urb_list.next, struct urb, urb_list); | |
304 | udev = urb->dev; | |
305 | ptd = &ep->ptd; | |
306 | cc = PTD_GET_CC(ptd); | |
307 | ||
308 | spin_lock(&urb->lock); | |
309 | short_not_ok = 1; | |
310 | ||
311 | /* Data underrun is special. For allowed underrun | |
312 | we clear the error and continue as normal. For | |
313 | forbidden underrun we finish the DATA stage | |
314 | immediately while for control transfer, | |
315 | we do a STATUS stage. */ | |
316 | if (cc == TD_DATAUNDERRUN) { | |
317 | if (!(urb->transfer_flags & URB_SHORT_NOT_OK)) { | |
318 | DBG("Allowed data underrun\n"); | |
319 | cc = TD_CC_NOERROR; | |
320 | short_not_ok = 0; | |
321 | } else { | |
322 | ep->error_count = 1; | |
323 | if (usb_pipecontrol(urb->pipe)) | |
324 | ep->nextpid = USB_PID_ACK; | |
325 | else | |
326 | usb_settoggle(udev, ep->epnum, | |
327 | ep->nextpid == | |
328 | USB_PID_OUT, | |
e9b765de OK |
329 | PTD_GET_TOGGLE(ptd)); |
330 | urb->actual_length += PTD_GET_COUNT(ptd); | |
4808a1c0 OK |
331 | urb->status = cc_to_error[TD_DATAUNDERRUN]; |
332 | spin_unlock(&urb->lock); | |
333 | continue; | |
334 | } | |
335 | } | |
336 | /* Keep underrun error through the STATUS stage */ | |
337 | if (urb->status == cc_to_error[TD_DATAUNDERRUN]) | |
338 | cc = TD_DATAUNDERRUN; | |
339 | ||
340 | if (cc != TD_CC_NOERROR && cc != TD_NOTACCESSED | |
341 | && (++ep->error_count >= 3 || cc == TD_CC_STALL | |
342 | || cc == TD_DATAOVERRUN)) { | |
343 | if (urb->status == -EINPROGRESS) | |
344 | urb->status = cc_to_error[cc]; | |
345 | if (ep->nextpid == USB_PID_ACK) | |
346 | ep->nextpid = 0; | |
347 | spin_unlock(&urb->lock); | |
348 | continue; | |
349 | } | |
350 | /* According to usb spec, zero-length Int transfer signals | |
351 | finishing of the urb. Hey, does this apply only | |
352 | for IN endpoints? */ | |
353 | if (usb_pipeint(urb->pipe) && !PTD_GET_LEN(ptd)) { | |
354 | if (urb->status == -EINPROGRESS) | |
355 | urb->status = 0; | |
356 | spin_unlock(&urb->lock); | |
357 | continue; | |
358 | } | |
359 | ||
360 | /* Relax after previously failed, but later succeeded | |
361 | or correctly NAK'ed retransmission attempt */ | |
362 | if (ep->error_count | |
363 | && (cc == TD_CC_NOERROR || cc == TD_NOTACCESSED)) | |
364 | ep->error_count = 0; | |
365 | ||
366 | /* Take into account idiosyncracies of the isp116x chip | |
367 | regarding toggle bit for failed transfers */ | |
368 | if (ep->nextpid == USB_PID_OUT) | |
369 | usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd) | |
370 | ^ (ep->error_count > 0)); | |
371 | else if (ep->nextpid == USB_PID_IN) | |
372 | usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd) | |
373 | ^ (ep->error_count > 0)); | |
374 | ||
375 | switch (ep->nextpid) { | |
376 | case USB_PID_IN: | |
377 | case USB_PID_OUT: | |
378 | urb->actual_length += PTD_GET_COUNT(ptd); | |
379 | if (PTD_GET_ACTIVE(ptd) | |
380 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
381 | break; | |
382 | if (urb->transfer_buffer_length != urb->actual_length) { | |
383 | if (short_not_ok) | |
384 | break; | |
385 | } else { | |
386 | if (urb->transfer_flags & URB_ZERO_PACKET | |
387 | && ep->nextpid == USB_PID_OUT | |
388 | && !(PTD_GET_COUNT(ptd) % ep->maxpacket)) { | |
389 | DBG("Zero packet requested\n"); | |
390 | break; | |
391 | } | |
392 | } | |
393 | /* All data for this URB is transferred, let's finish */ | |
394 | if (usb_pipecontrol(urb->pipe)) | |
395 | ep->nextpid = USB_PID_ACK; | |
396 | else if (urb->status == -EINPROGRESS) | |
397 | urb->status = 0; | |
398 | break; | |
399 | case USB_PID_SETUP: | |
400 | if (PTD_GET_ACTIVE(ptd) | |
401 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
402 | break; | |
403 | if (urb->transfer_buffer_length == urb->actual_length) | |
404 | ep->nextpid = USB_PID_ACK; | |
405 | else if (usb_pipeout(urb->pipe)) { | |
406 | usb_settoggle(udev, 0, 1, 1); | |
407 | ep->nextpid = USB_PID_OUT; | |
408 | } else { | |
409 | usb_settoggle(udev, 0, 0, 1); | |
410 | ep->nextpid = USB_PID_IN; | |
411 | } | |
412 | break; | |
413 | case USB_PID_ACK: | |
414 | if (PTD_GET_ACTIVE(ptd) | |
415 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
416 | break; | |
417 | if (urb->status == -EINPROGRESS) | |
418 | urb->status = 0; | |
419 | ep->nextpid = 0; | |
420 | break; | |
421 | default: | |
422 | BUG_ON(1); | |
423 | } | |
424 | spin_unlock(&urb->lock); | |
425 | } | |
426 | } | |
427 | ||
428 | /* | |
429 | Take done or failed requests out of schedule. Give back | |
430 | processed urbs. | |
431 | */ | |
432 | static void finish_request(struct isp116x *isp116x, struct isp116x_ep *ep, | |
433 | struct urb *urb, struct pt_regs *regs) | |
434 | __releases(isp116x->lock) __acquires(isp116x->lock) | |
435 | { | |
436 | unsigned i; | |
437 | ||
438 | urb->hcpriv = NULL; | |
439 | ep->error_count = 0; | |
440 | ||
441 | if (usb_pipecontrol(urb->pipe)) | |
442 | ep->nextpid = USB_PID_SETUP; | |
443 | ||
444 | urb_dbg(urb, "Finish"); | |
445 | ||
446 | spin_unlock(&isp116x->lock); | |
447 | usb_hcd_giveback_urb(isp116x_to_hcd(isp116x), urb, regs); | |
448 | spin_lock(&isp116x->lock); | |
449 | ||
450 | /* take idle endpoints out of the schedule */ | |
451 | if (!list_empty(&ep->hep->urb_list)) | |
452 | return; | |
453 | ||
454 | /* async deschedule */ | |
455 | if (!list_empty(&ep->schedule)) { | |
456 | list_del_init(&ep->schedule); | |
457 | return; | |
458 | } | |
459 | ||
460 | /* periodic deschedule */ | |
461 | DBG("deschedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); | |
462 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { | |
463 | struct isp116x_ep *temp; | |
464 | struct isp116x_ep **prev = &isp116x->periodic[i]; | |
465 | ||
466 | while (*prev && ((temp = *prev) != ep)) | |
467 | prev = &temp->next; | |
468 | if (*prev) | |
469 | *prev = ep->next; | |
470 | isp116x->load[i] -= ep->load; | |
471 | } | |
472 | ep->branch = PERIODIC_SIZE; | |
473 | isp116x_to_hcd(isp116x)->self.bandwidth_allocated -= | |
474 | ep->load / ep->period; | |
475 | ||
476 | /* switch irq type? */ | |
477 | if (!--isp116x->periodic_count) { | |
478 | isp116x->irqenb &= ~HCuPINT_SOF; | |
479 | isp116x->irqenb |= HCuPINT_ATL; | |
480 | } | |
481 | } | |
482 | ||
483 | /* | |
484 | Scan transfer lists, schedule transfers, send data off | |
485 | to chip. | |
486 | */ | |
487 | static void start_atl_transfers(struct isp116x *isp116x) | |
488 | { | |
489 | struct isp116x_ep *last_ep = NULL, *ep; | |
490 | struct urb *urb; | |
491 | u16 load = 0; | |
492 | int len, index, speed, byte_time; | |
493 | ||
494 | if (atomic_read(&isp116x->atl_finishing)) | |
495 | return; | |
496 | ||
497 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) | |
498 | return; | |
499 | ||
500 | /* FIFO not empty? */ | |
501 | if (isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_FULL) | |
502 | return; | |
503 | ||
504 | isp116x->atl_active = NULL; | |
505 | isp116x->atl_buflen = isp116x->atl_bufshrt = 0; | |
506 | ||
507 | /* Schedule int transfers */ | |
508 | if (isp116x->periodic_count) { | |
509 | isp116x->fmindex = index = | |
510 | (isp116x->fmindex + 1) & (PERIODIC_SIZE - 1); | |
511 | if ((load = isp116x->load[index])) { | |
512 | /* Bring all int transfers for this frame | |
513 | into the active queue */ | |
514 | isp116x->atl_active = last_ep = | |
515 | isp116x->periodic[index]; | |
516 | while (last_ep->next) | |
517 | last_ep = (last_ep->active = last_ep->next); | |
518 | last_ep->active = NULL; | |
519 | } | |
520 | } | |
521 | ||
522 | /* Schedule control/bulk transfers */ | |
523 | list_for_each_entry(ep, &isp116x->async, schedule) { | |
524 | urb = container_of(ep->hep->urb_list.next, | |
525 | struct urb, urb_list); | |
526 | speed = urb->dev->speed; | |
527 | byte_time = speed == USB_SPEED_LOW | |
528 | ? BYTE_TIME_LOWSPEED : BYTE_TIME_FULLSPEED; | |
529 | ||
530 | if (ep->nextpid == USB_PID_SETUP) { | |
531 | len = sizeof(struct usb_ctrlrequest); | |
532 | } else if (ep->nextpid == USB_PID_ACK) { | |
533 | len = 0; | |
534 | } else { | |
535 | /* Find current free length ... */ | |
536 | len = (MAX_LOAD_LIMIT - load) / byte_time; | |
537 | ||
538 | /* ... then limit it to configured max size ... */ | |
539 | len = min(len, speed == USB_SPEED_LOW ? | |
540 | MAX_TRANSFER_SIZE_LOWSPEED : | |
541 | MAX_TRANSFER_SIZE_FULLSPEED); | |
542 | ||
543 | /* ... and finally cut to the multiple of MaxPacketSize, | |
544 | or to the real length if there's enough room. */ | |
545 | if (len < | |
546 | (urb->transfer_buffer_length - | |
547 | urb->actual_length)) { | |
548 | len -= len % ep->maxpacket; | |
549 | if (!len) | |
550 | continue; | |
551 | } else | |
552 | len = urb->transfer_buffer_length - | |
553 | urb->actual_length; | |
554 | BUG_ON(len < 0); | |
555 | } | |
556 | ||
557 | load += len * byte_time; | |
558 | if (load > MAX_LOAD_LIMIT) | |
559 | break; | |
560 | ||
561 | ep->active = NULL; | |
562 | ep->length = len; | |
563 | if (last_ep) | |
564 | last_ep->active = ep; | |
565 | else | |
566 | isp116x->atl_active = ep; | |
567 | last_ep = ep; | |
568 | } | |
569 | ||
570 | /* Avoid starving of endpoints */ | |
571 | if ((&isp116x->async)->next != (&isp116x->async)->prev) | |
572 | list_move(&isp116x->async, (&isp116x->async)->next); | |
573 | ||
574 | if (isp116x->atl_active) { | |
575 | preproc_atl_queue(isp116x); | |
576 | pack_fifo(isp116x); | |
577 | } | |
578 | } | |
579 | ||
580 | /* | |
581 | Finish the processed transfers | |
582 | */ | |
583 | static void finish_atl_transfers(struct isp116x *isp116x, struct pt_regs *regs) | |
584 | { | |
585 | struct isp116x_ep *ep; | |
586 | struct urb *urb; | |
587 | ||
588 | if (!isp116x->atl_active) | |
589 | return; | |
590 | /* Fifo not ready? */ | |
591 | if (!(isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_DONE)) | |
592 | return; | |
593 | ||
594 | atomic_inc(&isp116x->atl_finishing); | |
595 | unpack_fifo(isp116x); | |
596 | postproc_atl_queue(isp116x); | |
597 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
598 | urb = | |
599 | container_of(ep->hep->urb_list.next, struct urb, urb_list); | |
600 | /* USB_PID_ACK check here avoids finishing of | |
601 | control transfers, for which TD_DATAUNDERRUN | |
602 | occured, while URB_SHORT_NOT_OK was set */ | |
603 | if (urb && urb->status != -EINPROGRESS | |
604 | && ep->nextpid != USB_PID_ACK) | |
605 | finish_request(isp116x, ep, urb, regs); | |
606 | } | |
607 | atomic_dec(&isp116x->atl_finishing); | |
608 | } | |
609 | ||
610 | static irqreturn_t isp116x_irq(struct usb_hcd *hcd, struct pt_regs *regs) | |
611 | { | |
612 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
613 | u16 irqstat; | |
614 | irqreturn_t ret = IRQ_NONE; | |
615 | ||
616 | spin_lock(&isp116x->lock); | |
617 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
618 | irqstat = isp116x_read_reg16(isp116x, HCuPINT); | |
619 | isp116x_write_reg16(isp116x, HCuPINT, irqstat); | |
620 | ||
621 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { | |
622 | ret = IRQ_HANDLED; | |
623 | finish_atl_transfers(isp116x, regs); | |
624 | } | |
625 | ||
626 | if (irqstat & HCuPINT_OPR) { | |
627 | u32 intstat = isp116x_read_reg32(isp116x, HCINTSTAT); | |
628 | isp116x_write_reg32(isp116x, HCINTSTAT, intstat); | |
629 | if (intstat & HCINT_UE) { | |
630 | ERR("Unrecoverable error\n"); | |
631 | /* What should we do here? Reset? */ | |
632 | } | |
9a57116b OK |
633 | if (intstat & HCINT_RHSC) |
634 | /* When root hub or any of its ports is going | |
635 | to come out of suspend, it may take more | |
636 | than 10ms for status bits to stabilize. */ | |
637 | mod_timer(&hcd->rh_timer, jiffies | |
638 | + msecs_to_jiffies(20) + 1); | |
4808a1c0 OK |
639 | if (intstat & HCINT_RD) { |
640 | DBG("---- remote wakeup\n"); | |
641 | schedule_work(&isp116x->rh_resume); | |
642 | ret = IRQ_HANDLED; | |
643 | } | |
644 | irqstat &= ~HCuPINT_OPR; | |
645 | ret = IRQ_HANDLED; | |
646 | } | |
647 | ||
648 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { | |
649 | start_atl_transfers(isp116x); | |
650 | } | |
651 | ||
652 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); | |
653 | spin_unlock(&isp116x->lock); | |
654 | return ret; | |
655 | } | |
656 | ||
657 | /*-----------------------------------------------------------------*/ | |
658 | ||
659 | /* usb 1.1 says max 90% of a frame is available for periodic transfers. | |
660 | * this driver doesn't promise that much since it's got to handle an | |
661 | * IRQ per packet; irq handling latencies also use up that time. | |
662 | */ | |
663 | ||
664 | /* out of 1000 us */ | |
665 | #define MAX_PERIODIC_LOAD 600 | |
666 | static int balance(struct isp116x *isp116x, u16 period, u16 load) | |
667 | { | |
668 | int i, branch = -ENOSPC; | |
669 | ||
670 | /* search for the least loaded schedule branch of that period | |
671 | which has enough bandwidth left unreserved. */ | |
672 | for (i = 0; i < period; i++) { | |
673 | if (branch < 0 || isp116x->load[branch] > isp116x->load[i]) { | |
674 | int j; | |
675 | ||
676 | for (j = i; j < PERIODIC_SIZE; j += period) { | |
677 | if ((isp116x->load[j] + load) | |
678 | > MAX_PERIODIC_LOAD) | |
679 | break; | |
680 | } | |
681 | if (j < PERIODIC_SIZE) | |
682 | continue; | |
683 | branch = i; | |
684 | } | |
685 | } | |
686 | return branch; | |
687 | } | |
688 | ||
689 | /* NB! ALL the code above this point runs with isp116x->lock | |
690 | held, irqs off | |
691 | */ | |
692 | ||
693 | /*-----------------------------------------------------------------*/ | |
694 | ||
695 | static int isp116x_urb_enqueue(struct usb_hcd *hcd, | |
696 | struct usb_host_endpoint *hep, struct urb *urb, | |
55016f10 | 697 | gfp_t mem_flags) |
4808a1c0 OK |
698 | { |
699 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
700 | struct usb_device *udev = urb->dev; | |
701 | unsigned int pipe = urb->pipe; | |
702 | int is_out = !usb_pipein(pipe); | |
703 | int type = usb_pipetype(pipe); | |
704 | int epnum = usb_pipeendpoint(pipe); | |
705 | struct isp116x_ep *ep = NULL; | |
706 | unsigned long flags; | |
707 | int i; | |
708 | int ret = 0; | |
709 | ||
710 | urb_dbg(urb, "Enqueue"); | |
711 | ||
712 | if (type == PIPE_ISOCHRONOUS) { | |
713 | ERR("Isochronous transfers not supported\n"); | |
714 | urb_dbg(urb, "Refused to enqueue"); | |
715 | return -ENXIO; | |
716 | } | |
717 | /* avoid all allocations within spinlocks: request or endpoint */ | |
718 | if (!hep->hcpriv) { | |
7b842b6e | 719 | ep = kzalloc(sizeof *ep, mem_flags); |
4808a1c0 OK |
720 | if (!ep) |
721 | return -ENOMEM; | |
722 | } | |
723 | ||
724 | spin_lock_irqsave(&isp116x->lock, flags); | |
725 | if (!HC_IS_RUNNING(hcd->state)) { | |
726 | ret = -ENODEV; | |
727 | goto fail; | |
728 | } | |
729 | ||
730 | if (hep->hcpriv) | |
731 | ep = hep->hcpriv; | |
732 | else { | |
733 | INIT_LIST_HEAD(&ep->schedule); | |
734 | ep->udev = usb_get_dev(udev); | |
735 | ep->epnum = epnum; | |
736 | ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); | |
737 | usb_settoggle(udev, epnum, is_out, 0); | |
738 | ||
739 | if (type == PIPE_CONTROL) { | |
740 | ep->nextpid = USB_PID_SETUP; | |
741 | } else if (is_out) { | |
742 | ep->nextpid = USB_PID_OUT; | |
743 | } else { | |
744 | ep->nextpid = USB_PID_IN; | |
745 | } | |
746 | ||
747 | if (urb->interval) { | |
748 | /* | |
749 | With INT URBs submitted, the driver works with SOF | |
750 | interrupt enabled and ATL interrupt disabled. After | |
751 | the PTDs are written to fifo ram, the chip starts | |
752 | fifo processing and usb transfers after the next | |
753 | SOF and continues until the transfers are finished | |
754 | (succeeded or failed) or the frame ends. Therefore, | |
755 | the transfers occur only in every second frame, | |
756 | while fifo reading/writing and data processing | |
757 | occur in every other second frame. */ | |
758 | if (urb->interval < 2) | |
759 | urb->interval = 2; | |
760 | if (urb->interval > 2 * PERIODIC_SIZE) | |
761 | urb->interval = 2 * PERIODIC_SIZE; | |
762 | ep->period = urb->interval >> 1; | |
763 | ep->branch = PERIODIC_SIZE; | |
764 | ep->load = usb_calc_bus_time(udev->speed, | |
765 | !is_out, | |
766 | (type == PIPE_ISOCHRONOUS), | |
767 | usb_maxpacket(udev, pipe, | |
768 | is_out)) / | |
769 | 1000; | |
770 | } | |
771 | hep->hcpriv = ep; | |
772 | ep->hep = hep; | |
773 | } | |
774 | ||
775 | /* maybe put endpoint into schedule */ | |
776 | switch (type) { | |
777 | case PIPE_CONTROL: | |
778 | case PIPE_BULK: | |
779 | if (list_empty(&ep->schedule)) | |
780 | list_add_tail(&ep->schedule, &isp116x->async); | |
781 | break; | |
782 | case PIPE_INTERRUPT: | |
783 | urb->interval = ep->period; | |
784 | ep->length = min((int)ep->maxpacket, | |
785 | urb->transfer_buffer_length); | |
786 | ||
787 | /* urb submitted for already existing endpoint */ | |
788 | if (ep->branch < PERIODIC_SIZE) | |
789 | break; | |
790 | ||
791 | ret = ep->branch = balance(isp116x, ep->period, ep->load); | |
792 | if (ret < 0) | |
793 | goto fail; | |
794 | ret = 0; | |
795 | ||
796 | urb->start_frame = (isp116x->fmindex & (PERIODIC_SIZE - 1)) | |
797 | + ep->branch; | |
798 | ||
799 | /* sort each schedule branch by period (slow before fast) | |
800 | to share the faster parts of the tree without needing | |
801 | dummy/placeholder nodes */ | |
802 | DBG("schedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); | |
803 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { | |
804 | struct isp116x_ep **prev = &isp116x->periodic[i]; | |
805 | struct isp116x_ep *here = *prev; | |
806 | ||
807 | while (here && ep != here) { | |
808 | if (ep->period > here->period) | |
809 | break; | |
810 | prev = &here->next; | |
811 | here = *prev; | |
812 | } | |
813 | if (ep != here) { | |
814 | ep->next = here; | |
815 | *prev = ep; | |
816 | } | |
817 | isp116x->load[i] += ep->load; | |
818 | } | |
819 | hcd->self.bandwidth_allocated += ep->load / ep->period; | |
820 | ||
821 | /* switch over to SOFint */ | |
822 | if (!isp116x->periodic_count++) { | |
823 | isp116x->irqenb &= ~HCuPINT_ATL; | |
824 | isp116x->irqenb |= HCuPINT_SOF; | |
825 | isp116x_write_reg16(isp116x, HCuPINTENB, | |
826 | isp116x->irqenb); | |
827 | } | |
828 | } | |
829 | ||
830 | /* in case of unlink-during-submit */ | |
831 | spin_lock(&urb->lock); | |
832 | if (urb->status != -EINPROGRESS) { | |
833 | spin_unlock(&urb->lock); | |
834 | finish_request(isp116x, ep, urb, NULL); | |
835 | ret = 0; | |
836 | goto fail; | |
837 | } | |
838 | urb->hcpriv = hep; | |
839 | spin_unlock(&urb->lock); | |
840 | start_atl_transfers(isp116x); | |
841 | ||
842 | fail: | |
843 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
844 | return ret; | |
845 | } | |
846 | ||
847 | /* | |
848 | Dequeue URBs. | |
849 | */ | |
850 | static int isp116x_urb_dequeue(struct usb_hcd *hcd, struct urb *urb) | |
851 | { | |
852 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
853 | struct usb_host_endpoint *hep; | |
854 | struct isp116x_ep *ep, *ep_act; | |
855 | unsigned long flags; | |
856 | ||
857 | spin_lock_irqsave(&isp116x->lock, flags); | |
858 | hep = urb->hcpriv; | |
859 | /* URB already unlinked (or never linked)? */ | |
860 | if (!hep) { | |
861 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
862 | return 0; | |
863 | } | |
864 | ep = hep->hcpriv; | |
865 | WARN_ON(hep != ep->hep); | |
866 | ||
867 | /* In front of queue? */ | |
868 | if (ep->hep->urb_list.next == &urb->urb_list) | |
869 | /* active? */ | |
870 | for (ep_act = isp116x->atl_active; ep_act; | |
871 | ep_act = ep_act->active) | |
872 | if (ep_act == ep) { | |
873 | VDBG("dequeue, urb %p active; wait for irq\n", | |
874 | urb); | |
875 | urb = NULL; | |
876 | break; | |
877 | } | |
878 | ||
879 | if (urb) | |
880 | finish_request(isp116x, ep, urb, NULL); | |
881 | ||
882 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
883 | return 0; | |
884 | } | |
885 | ||
886 | static void isp116x_endpoint_disable(struct usb_hcd *hcd, | |
887 | struct usb_host_endpoint *hep) | |
888 | { | |
889 | int i; | |
890 | struct isp116x_ep *ep = hep->hcpriv;; | |
891 | ||
892 | if (!ep) | |
893 | return; | |
894 | ||
895 | /* assume we'd just wait for the irq */ | |
896 | for (i = 0; i < 100 && !list_empty(&hep->urb_list); i++) | |
897 | msleep(3); | |
898 | if (!list_empty(&hep->urb_list)) | |
899 | WARN("ep %p not empty?\n", ep); | |
900 | ||
901 | usb_put_dev(ep->udev); | |
902 | kfree(ep); | |
903 | hep->hcpriv = NULL; | |
904 | } | |
905 | ||
906 | static int isp116x_get_frame(struct usb_hcd *hcd) | |
907 | { | |
908 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
909 | u32 fmnum; | |
910 | unsigned long flags; | |
911 | ||
912 | spin_lock_irqsave(&isp116x->lock, flags); | |
913 | fmnum = isp116x_read_reg32(isp116x, HCFMNUM); | |
914 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
915 | return (int)fmnum; | |
916 | } | |
917 | ||
918 | /*----------------------------------------------------------------*/ | |
919 | ||
920 | /* | |
921 | Adapted from ohci-hub.c. Currently we don't support autosuspend. | |
922 | */ | |
923 | static int isp116x_hub_status_data(struct usb_hcd *hcd, char *buf) | |
924 | { | |
925 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
926 | int ports, i, changed = 0; | |
9a57116b | 927 | unsigned long flags; |
4808a1c0 OK |
928 | |
929 | if (!HC_IS_RUNNING(hcd->state)) | |
930 | return -ESHUTDOWN; | |
931 | ||
9a57116b OK |
932 | /* Report no status change now, if we are scheduled to be |
933 | called later */ | |
934 | if (timer_pending(&hcd->rh_timer)) | |
935 | return 0; | |
4808a1c0 | 936 | |
9a57116b OK |
937 | ports = isp116x->rhdesca & RH_A_NDP; |
938 | spin_lock_irqsave(&isp116x->lock, flags); | |
939 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); | |
4808a1c0 OK |
940 | if (isp116x->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) |
941 | buf[0] = changed = 1; | |
942 | else | |
943 | buf[0] = 0; | |
944 | ||
945 | for (i = 0; i < ports; i++) { | |
9a57116b OK |
946 | u32 status = isp116x->rhport[i] = |
947 | isp116x_read_reg32(isp116x, i ? HCRHPORT2 : HCRHPORT1); | |
4808a1c0 OK |
948 | |
949 | if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | |
950 | | RH_PS_OCIC | RH_PS_PRSC)) { | |
951 | changed = 1; | |
952 | buf[0] |= 1 << (i + 1); | |
953 | continue; | |
954 | } | |
955 | } | |
9a57116b | 956 | spin_unlock_irqrestore(&isp116x->lock, flags); |
4808a1c0 OK |
957 | return changed; |
958 | } | |
959 | ||
960 | static void isp116x_hub_descriptor(struct isp116x *isp116x, | |
961 | struct usb_hub_descriptor *desc) | |
962 | { | |
963 | u32 reg = isp116x->rhdesca; | |
964 | ||
965 | desc->bDescriptorType = 0x29; | |
966 | desc->bDescLength = 9; | |
967 | desc->bHubContrCurrent = 0; | |
968 | desc->bNbrPorts = (u8) (reg & 0x3); | |
969 | /* Power switching, device type, overcurrent. */ | |
970 | desc->wHubCharacteristics = | |
971 | (__force __u16) cpu_to_le16((u16) ((reg >> 8) & 0x1f)); | |
972 | desc->bPwrOn2PwrGood = (u8) ((reg >> 24) & 0xff); | |
973 | /* two bitmaps: ports removable, and legacy PortPwrCtrlMask */ | |
974 | desc->bitmap[0] = desc->bNbrPorts == 1 ? 1 << 1 : 3 << 1; | |
975 | desc->bitmap[1] = ~0; | |
976 | } | |
977 | ||
978 | /* Perform reset of a given port. | |
979 | It would be great to just start the reset and let the | |
980 | USB core to clear the reset in due time. However, | |
981 | root hub ports should be reset for at least 50 ms, while | |
982 | our chip stays in reset for about 10 ms. I.e., we must | |
983 | repeatedly reset it ourself here. | |
984 | */ | |
985 | static inline void root_port_reset(struct isp116x *isp116x, unsigned port) | |
986 | { | |
987 | u32 tmp; | |
988 | unsigned long flags, t; | |
989 | ||
990 | /* Root hub reset should be 50 ms, but some devices | |
991 | want it even longer. */ | |
992 | t = jiffies + msecs_to_jiffies(100); | |
993 | ||
994 | while (time_before(jiffies, t)) { | |
995 | spin_lock_irqsave(&isp116x->lock, flags); | |
996 | /* spin until any current reset finishes */ | |
997 | for (;;) { | |
998 | tmp = isp116x_read_reg32(isp116x, port ? | |
999 | HCRHPORT2 : HCRHPORT1); | |
1000 | if (!(tmp & RH_PS_PRS)) | |
1001 | break; | |
1002 | udelay(500); | |
1003 | } | |
1004 | /* Don't reset a disconnected port */ | |
1005 | if (!(tmp & RH_PS_CCS)) { | |
1006 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1007 | break; | |
1008 | } | |
1009 | /* Reset lasts 10ms (claims datasheet) */ | |
1010 | isp116x_write_reg32(isp116x, port ? HCRHPORT2 : | |
1011 | HCRHPORT1, (RH_PS_PRS)); | |
1012 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1013 | msleep(10); | |
1014 | } | |
1015 | } | |
1016 | ||
1017 | /* Adapted from ohci-hub.c */ | |
1018 | static int isp116x_hub_control(struct usb_hcd *hcd, | |
1019 | u16 typeReq, | |
1020 | u16 wValue, u16 wIndex, char *buf, u16 wLength) | |
1021 | { | |
1022 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1023 | int ret = 0; | |
1024 | unsigned long flags; | |
1025 | int ports = isp116x->rhdesca & RH_A_NDP; | |
1026 | u32 tmp = 0; | |
1027 | ||
1028 | switch (typeReq) { | |
1029 | case ClearHubFeature: | |
1030 | DBG("ClearHubFeature: "); | |
1031 | switch (wValue) { | |
1032 | case C_HUB_OVER_CURRENT: | |
1033 | DBG("C_HUB_OVER_CURRENT\n"); | |
1034 | spin_lock_irqsave(&isp116x->lock, flags); | |
1035 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_OCIC); | |
1036 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1037 | case C_HUB_LOCAL_POWER: | |
1038 | DBG("C_HUB_LOCAL_POWER\n"); | |
1039 | break; | |
1040 | default: | |
1041 | goto error; | |
1042 | } | |
1043 | break; | |
1044 | case SetHubFeature: | |
1045 | DBG("SetHubFeature: "); | |
1046 | switch (wValue) { | |
1047 | case C_HUB_OVER_CURRENT: | |
1048 | case C_HUB_LOCAL_POWER: | |
1049 | DBG("C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); | |
1050 | break; | |
1051 | default: | |
1052 | goto error; | |
1053 | } | |
1054 | break; | |
1055 | case GetHubDescriptor: | |
1056 | DBG("GetHubDescriptor\n"); | |
1057 | isp116x_hub_descriptor(isp116x, | |
1058 | (struct usb_hub_descriptor *)buf); | |
1059 | break; | |
1060 | case GetHubStatus: | |
1061 | DBG("GetHubStatus\n"); | |
17f8bb73 | 1062 | *(__le32 *) buf = 0; |
4808a1c0 OK |
1063 | break; |
1064 | case GetPortStatus: | |
1065 | DBG("GetPortStatus\n"); | |
1066 | if (!wIndex || wIndex > ports) | |
1067 | goto error; | |
1068 | tmp = isp116x->rhport[--wIndex]; | |
1069 | *(__le32 *) buf = cpu_to_le32(tmp); | |
1070 | DBG("GetPortStatus: port[%d] %08x\n", wIndex + 1, tmp); | |
1071 | break; | |
1072 | case ClearPortFeature: | |
1073 | DBG("ClearPortFeature: "); | |
1074 | if (!wIndex || wIndex > ports) | |
1075 | goto error; | |
1076 | wIndex--; | |
1077 | ||
1078 | switch (wValue) { | |
1079 | case USB_PORT_FEAT_ENABLE: | |
1080 | DBG("USB_PORT_FEAT_ENABLE\n"); | |
1081 | tmp = RH_PS_CCS; | |
1082 | break; | |
1083 | case USB_PORT_FEAT_C_ENABLE: | |
1084 | DBG("USB_PORT_FEAT_C_ENABLE\n"); | |
1085 | tmp = RH_PS_PESC; | |
1086 | break; | |
1087 | case USB_PORT_FEAT_SUSPEND: | |
1088 | DBG("USB_PORT_FEAT_SUSPEND\n"); | |
1089 | tmp = RH_PS_POCI; | |
1090 | break; | |
1091 | case USB_PORT_FEAT_C_SUSPEND: | |
1092 | DBG("USB_PORT_FEAT_C_SUSPEND\n"); | |
1093 | tmp = RH_PS_PSSC; | |
1094 | break; | |
1095 | case USB_PORT_FEAT_POWER: | |
1096 | DBG("USB_PORT_FEAT_POWER\n"); | |
1097 | tmp = RH_PS_LSDA; | |
1098 | break; | |
1099 | case USB_PORT_FEAT_C_CONNECTION: | |
1100 | DBG("USB_PORT_FEAT_C_CONNECTION\n"); | |
1101 | tmp = RH_PS_CSC; | |
1102 | break; | |
1103 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
1104 | DBG("USB_PORT_FEAT_C_OVER_CURRENT\n"); | |
1105 | tmp = RH_PS_OCIC; | |
1106 | break; | |
1107 | case USB_PORT_FEAT_C_RESET: | |
1108 | DBG("USB_PORT_FEAT_C_RESET\n"); | |
1109 | tmp = RH_PS_PRSC; | |
1110 | break; | |
1111 | default: | |
1112 | goto error; | |
1113 | } | |
1114 | spin_lock_irqsave(&isp116x->lock, flags); | |
1115 | isp116x_write_reg32(isp116x, wIndex | |
1116 | ? HCRHPORT2 : HCRHPORT1, tmp); | |
1117 | isp116x->rhport[wIndex] = | |
1118 | isp116x_read_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1); | |
1119 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1120 | break; | |
1121 | case SetPortFeature: | |
1122 | DBG("SetPortFeature: "); | |
1123 | if (!wIndex || wIndex > ports) | |
1124 | goto error; | |
1125 | wIndex--; | |
1126 | switch (wValue) { | |
1127 | case USB_PORT_FEAT_SUSPEND: | |
1128 | DBG("USB_PORT_FEAT_SUSPEND\n"); | |
1129 | spin_lock_irqsave(&isp116x->lock, flags); | |
1130 | isp116x_write_reg32(isp116x, wIndex | |
1131 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PSS); | |
1132 | break; | |
1133 | case USB_PORT_FEAT_POWER: | |
1134 | DBG("USB_PORT_FEAT_POWER\n"); | |
1135 | spin_lock_irqsave(&isp116x->lock, flags); | |
1136 | isp116x_write_reg32(isp116x, wIndex | |
1137 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PPS); | |
1138 | break; | |
1139 | case USB_PORT_FEAT_RESET: | |
1140 | DBG("USB_PORT_FEAT_RESET\n"); | |
1141 | root_port_reset(isp116x, wIndex); | |
1142 | spin_lock_irqsave(&isp116x->lock, flags); | |
1143 | break; | |
1144 | default: | |
1145 | goto error; | |
1146 | } | |
1147 | isp116x->rhport[wIndex] = | |
1148 | isp116x_read_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1); | |
1149 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1150 | break; | |
1151 | ||
1152 | default: | |
1153 | error: | |
1154 | /* "protocol stall" on error */ | |
1155 | DBG("PROTOCOL STALL\n"); | |
1156 | ret = -EPIPE; | |
1157 | } | |
1158 | return ret; | |
1159 | } | |
1160 | ||
1161 | #ifdef CONFIG_PM | |
1162 | ||
1163 | static int isp116x_hub_suspend(struct usb_hcd *hcd) | |
1164 | { | |
1165 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1166 | unsigned long flags; | |
1167 | u32 val; | |
1168 | int ret = 0; | |
1169 | ||
1170 | spin_lock_irqsave(&isp116x->lock, flags); | |
1171 | ||
1172 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1173 | switch (val & HCCONTROL_HCFS) { | |
1174 | case HCCONTROL_USB_OPER: | |
1175 | hcd->state = HC_STATE_QUIESCING; | |
1176 | val &= (~HCCONTROL_HCFS & ~HCCONTROL_RWE); | |
1177 | val |= HCCONTROL_USB_SUSPEND; | |
1178 | if (hcd->remote_wakeup) | |
1179 | val |= HCCONTROL_RWE; | |
1180 | /* Wait for usb transfers to finish */ | |
1181 | mdelay(2); | |
1182 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1183 | hcd->state = HC_STATE_SUSPENDED; | |
1184 | /* Wait for devices to suspend */ | |
1185 | mdelay(5); | |
1186 | case HCCONTROL_USB_SUSPEND: | |
1187 | break; | |
1188 | case HCCONTROL_USB_RESUME: | |
1189 | isp116x_write_reg32(isp116x, HCCONTROL, | |
1190 | (val & ~HCCONTROL_HCFS) | | |
1191 | HCCONTROL_USB_RESET); | |
1192 | case HCCONTROL_USB_RESET: | |
1193 | ret = -EBUSY; | |
1194 | break; | |
1195 | default: | |
1196 | ret = -EINVAL; | |
1197 | } | |
1198 | ||
1199 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1200 | return ret; | |
1201 | } | |
1202 | ||
1203 | static int isp116x_hub_resume(struct usb_hcd *hcd) | |
1204 | { | |
1205 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1206 | u32 val; | |
1207 | int ret = -EINPROGRESS; | |
1208 | ||
1209 | msleep(5); | |
1210 | spin_lock_irq(&isp116x->lock); | |
1211 | ||
1212 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1213 | switch (val & HCCONTROL_HCFS) { | |
1214 | case HCCONTROL_USB_SUSPEND: | |
1215 | val &= ~HCCONTROL_HCFS; | |
1216 | val |= HCCONTROL_USB_RESUME; | |
1217 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1218 | case HCCONTROL_USB_RESUME: | |
1219 | break; | |
1220 | case HCCONTROL_USB_OPER: | |
1221 | /* Without setting power_state here the | |
1222 | SUSPENDED state won't be removed from | |
1223 | sysfs/usbN/power.state as a response to remote | |
1224 | wakeup. Maybe in the future. */ | |
1225 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; | |
1226 | ret = 0; | |
1227 | break; | |
1228 | default: | |
1229 | ret = -EBUSY; | |
1230 | } | |
1231 | ||
1232 | if (ret != -EINPROGRESS) { | |
1233 | spin_unlock_irq(&isp116x->lock); | |
1234 | return ret; | |
1235 | } | |
1236 | ||
1237 | val = isp116x->rhdesca & RH_A_NDP; | |
1238 | while (val--) { | |
1239 | u32 stat = | |
1240 | isp116x_read_reg32(isp116x, val ? HCRHPORT2 : HCRHPORT1); | |
1241 | /* force global, not selective, resume */ | |
1242 | if (!(stat & RH_PS_PSS)) | |
1243 | continue; | |
1244 | DBG("%s: Resuming port %d\n", __func__, val); | |
1245 | isp116x_write_reg32(isp116x, RH_PS_POCI, val | |
1246 | ? HCRHPORT2 : HCRHPORT1); | |
1247 | } | |
1248 | spin_unlock_irq(&isp116x->lock); | |
1249 | ||
1250 | hcd->state = HC_STATE_RESUMING; | |
1251 | mdelay(20); | |
1252 | ||
1253 | /* Go operational */ | |
1254 | spin_lock_irq(&isp116x->lock); | |
1255 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1256 | isp116x_write_reg32(isp116x, HCCONTROL, | |
1257 | (val & ~HCCONTROL_HCFS) | HCCONTROL_USB_OPER); | |
1258 | spin_unlock_irq(&isp116x->lock); | |
1259 | /* see analogous comment above */ | |
1260 | hcd->self.root_hub->dev.power.power_state = PMSG_ON; | |
1261 | hcd->state = HC_STATE_RUNNING; | |
1262 | ||
1263 | return 0; | |
1264 | } | |
1265 | ||
1266 | static void isp116x_rh_resume(void *_hcd) | |
1267 | { | |
1268 | struct usb_hcd *hcd = _hcd; | |
1269 | ||
1270 | usb_resume_device(hcd->self.root_hub); | |
1271 | } | |
1272 | ||
1273 | #else | |
1274 | ||
1275 | #define isp116x_hub_suspend NULL | |
1276 | #define isp116x_hub_resume NULL | |
1277 | ||
1278 | static void isp116x_rh_resume(void *_hcd) | |
1279 | { | |
1280 | } | |
1281 | ||
1282 | #endif | |
1283 | ||
1284 | /*-----------------------------------------------------------------*/ | |
1285 | ||
1286 | #ifdef STUB_DEBUG_FILE | |
1287 | ||
1288 | static inline void create_debug_file(struct isp116x *isp116x) | |
1289 | { | |
1290 | } | |
1291 | ||
1292 | static inline void remove_debug_file(struct isp116x *isp116x) | |
1293 | { | |
1294 | } | |
1295 | ||
1296 | #else | |
1297 | ||
1298 | #include <linux/proc_fs.h> | |
1299 | #include <linux/seq_file.h> | |
1300 | ||
1301 | static void dump_irq(struct seq_file *s, char *label, u16 mask) | |
1302 | { | |
1303 | seq_printf(s, "%s %04x%s%s%s%s%s%s\n", label, mask, | |
1304 | mask & HCuPINT_CLKRDY ? " clkrdy" : "", | |
1305 | mask & HCuPINT_SUSP ? " susp" : "", | |
1306 | mask & HCuPINT_OPR ? " opr" : "", | |
1307 | mask & HCuPINT_AIIEOT ? " eot" : "", | |
1308 | mask & HCuPINT_ATL ? " atl" : "", | |
1309 | mask & HCuPINT_SOF ? " sof" : ""); | |
1310 | } | |
1311 | ||
1312 | static void dump_int(struct seq_file *s, char *label, u32 mask) | |
1313 | { | |
1314 | seq_printf(s, "%s %08x%s%s%s%s%s%s%s\n", label, mask, | |
1315 | mask & HCINT_MIE ? " MIE" : "", | |
1316 | mask & HCINT_RHSC ? " rhsc" : "", | |
1317 | mask & HCINT_FNO ? " fno" : "", | |
1318 | mask & HCINT_UE ? " ue" : "", | |
1319 | mask & HCINT_RD ? " rd" : "", | |
1320 | mask & HCINT_SF ? " sof" : "", mask & HCINT_SO ? " so" : ""); | |
1321 | } | |
1322 | ||
1323 | static int proc_isp116x_show(struct seq_file *s, void *unused) | |
1324 | { | |
1325 | struct isp116x *isp116x = s->private; | |
1326 | struct isp116x_ep *ep; | |
1327 | struct urb *urb; | |
1328 | unsigned i; | |
1329 | char *str; | |
1330 | ||
1331 | seq_printf(s, "%s\n%s version %s\n", | |
1332 | isp116x_to_hcd(isp116x)->product_desc, hcd_name, | |
1333 | DRIVER_VERSION); | |
1334 | ||
1335 | if (HC_IS_SUSPENDED(isp116x_to_hcd(isp116x)->state)) { | |
1336 | seq_printf(s, "HCD is suspended\n"); | |
1337 | return 0; | |
1338 | } | |
1339 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) { | |
1340 | seq_printf(s, "HCD not running\n"); | |
1341 | return 0; | |
1342 | } | |
1343 | ||
1344 | spin_lock_irq(&isp116x->lock); | |
1345 | ||
1346 | dump_irq(s, "hc_irq_enable", isp116x_read_reg16(isp116x, HCuPINTENB)); | |
1347 | dump_irq(s, "hc_irq_status", isp116x_read_reg16(isp116x, HCuPINT)); | |
1348 | dump_int(s, "hc_int_enable", isp116x_read_reg32(isp116x, HCINTENB)); | |
1349 | dump_int(s, "hc_int_status", isp116x_read_reg32(isp116x, HCINTSTAT)); | |
1350 | ||
1351 | list_for_each_entry(ep, &isp116x->async, schedule) { | |
1352 | ||
1353 | switch (ep->nextpid) { | |
1354 | case USB_PID_IN: | |
1355 | str = "in"; | |
1356 | break; | |
1357 | case USB_PID_OUT: | |
1358 | str = "out"; | |
1359 | break; | |
1360 | case USB_PID_SETUP: | |
1361 | str = "setup"; | |
1362 | break; | |
1363 | case USB_PID_ACK: | |
1364 | str = "status"; | |
1365 | break; | |
1366 | default: | |
1367 | str = "?"; | |
1368 | break; | |
1369 | }; | |
1370 | seq_printf(s, "%p, ep%d%s, maxpacket %d:\n", ep, | |
1371 | ep->epnum, str, ep->maxpacket); | |
1372 | list_for_each_entry(urb, &ep->hep->urb_list, urb_list) { | |
1373 | seq_printf(s, " urb%p, %d/%d\n", urb, | |
1374 | urb->actual_length, | |
1375 | urb->transfer_buffer_length); | |
1376 | } | |
1377 | } | |
1378 | if (!list_empty(&isp116x->async)) | |
1379 | seq_printf(s, "\n"); | |
1380 | ||
1381 | seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE); | |
1382 | ||
1383 | for (i = 0; i < PERIODIC_SIZE; i++) { | |
1384 | ep = isp116x->periodic[i]; | |
1385 | if (!ep) | |
1386 | continue; | |
1387 | seq_printf(s, "%2d [%3d]:\n", i, isp116x->load[i]); | |
1388 | ||
1389 | /* DUMB: prints shared entries multiple times */ | |
1390 | do { | |
1391 | seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", | |
1392 | ep->period, ep, | |
1393 | (ep->udev->speed == | |
1394 | USB_SPEED_FULL) ? "" : "ls ", | |
1395 | ep->udev->devnum, ep->epnum, | |
1396 | (ep->epnum == | |
1397 | 0) ? "" : ((ep->nextpid == | |
1398 | USB_PID_IN) ? "in" : "out"), | |
1399 | ep->maxpacket); | |
1400 | ep = ep->next; | |
1401 | } while (ep); | |
1402 | } | |
1403 | spin_unlock_irq(&isp116x->lock); | |
1404 | seq_printf(s, "\n"); | |
1405 | ||
1406 | return 0; | |
1407 | } | |
1408 | ||
1409 | static int proc_isp116x_open(struct inode *inode, struct file *file) | |
1410 | { | |
1411 | return single_open(file, proc_isp116x_show, PDE(inode)->data); | |
1412 | } | |
1413 | ||
1414 | static struct file_operations proc_ops = { | |
1415 | .open = proc_isp116x_open, | |
1416 | .read = seq_read, | |
1417 | .llseek = seq_lseek, | |
1418 | .release = single_release, | |
1419 | }; | |
1420 | ||
1421 | /* expect just one isp116x per system */ | |
1422 | static const char proc_filename[] = "driver/isp116x"; | |
1423 | ||
1424 | static void create_debug_file(struct isp116x *isp116x) | |
1425 | { | |
1426 | struct proc_dir_entry *pde; | |
1427 | ||
1428 | pde = create_proc_entry(proc_filename, 0, NULL); | |
1429 | if (pde == NULL) | |
1430 | return; | |
1431 | ||
1432 | pde->proc_fops = &proc_ops; | |
1433 | pde->data = isp116x; | |
1434 | isp116x->pde = pde; | |
1435 | } | |
1436 | ||
1437 | static void remove_debug_file(struct isp116x *isp116x) | |
1438 | { | |
1439 | if (isp116x->pde) | |
1440 | remove_proc_entry(proc_filename, NULL); | |
1441 | } | |
1442 | ||
1443 | #endif | |
1444 | ||
1445 | /*-----------------------------------------------------------------*/ | |
1446 | ||
1447 | /* | |
1448 | Software reset - can be called from any contect. | |
1449 | */ | |
1450 | static int isp116x_sw_reset(struct isp116x *isp116x) | |
1451 | { | |
1452 | int retries = 15; | |
1453 | unsigned long flags; | |
1454 | int ret = 0; | |
1455 | ||
1456 | spin_lock_irqsave(&isp116x->lock, flags); | |
1457 | isp116x_write_reg16(isp116x, HCSWRES, HCSWRES_MAGIC); | |
1458 | isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR); | |
1459 | while (--retries) { | |
1460 | /* It usually resets within 1 ms */ | |
1461 | mdelay(1); | |
1462 | if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR)) | |
1463 | break; | |
1464 | } | |
1465 | if (!retries) { | |
1466 | ERR("Software reset timeout\n"); | |
1467 | ret = -ETIME; | |
1468 | } | |
1469 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1470 | return ret; | |
1471 | } | |
1472 | ||
4808a1c0 OK |
1473 | static int isp116x_reset(struct usb_hcd *hcd) |
1474 | { | |
1475 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1476 | unsigned long t; | |
1477 | u16 clkrdy = 0; | |
1478 | int ret = 0, timeout = 15 /* ms */ ; | |
1479 | ||
f8d23d30 | 1480 | ret = isp116x_sw_reset(isp116x); |
4808a1c0 OK |
1481 | if (ret) |
1482 | return ret; | |
1483 | ||
1484 | t = jiffies + msecs_to_jiffies(timeout); | |
1485 | while (time_before_eq(jiffies, t)) { | |
1486 | msleep(4); | |
1487 | spin_lock_irq(&isp116x->lock); | |
1488 | clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY; | |
1489 | spin_unlock_irq(&isp116x->lock); | |
1490 | if (clkrdy) | |
1491 | break; | |
1492 | } | |
1493 | if (!clkrdy) { | |
1494 | ERR("Clock not ready after 20ms\n"); | |
589a0083 OK |
1495 | /* After sw_reset the clock won't report to be ready, if |
1496 | H_WAKEUP pin is high. */ | |
f8d23d30 | 1497 | ERR("Please make sure that the H_WAKEUP pin is pulled low!\n"); |
4808a1c0 OK |
1498 | ret = -ENODEV; |
1499 | } | |
1500 | return ret; | |
1501 | } | |
1502 | ||
1503 | static void isp116x_stop(struct usb_hcd *hcd) | |
1504 | { | |
1505 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1506 | unsigned long flags; | |
1507 | u32 val; | |
1508 | ||
1509 | spin_lock_irqsave(&isp116x->lock, flags); | |
1510 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
1511 | ||
1512 | /* Switch off ports' power, some devices don't come up | |
1513 | after next 'insmod' without this */ | |
1514 | val = isp116x_read_reg32(isp116x, HCRHDESCA); | |
1515 | val &= ~(RH_A_NPS | RH_A_PSM); | |
1516 | isp116x_write_reg32(isp116x, HCRHDESCA, val); | |
1517 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS); | |
1518 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1519 | ||
f8d23d30 | 1520 | isp116x_sw_reset(isp116x); |
4808a1c0 OK |
1521 | } |
1522 | ||
1523 | /* | |
1524 | Configure the chip. The chip must be successfully reset by now. | |
1525 | */ | |
1526 | static int isp116x_start(struct usb_hcd *hcd) | |
1527 | { | |
1528 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1529 | struct isp116x_platform_data *board = isp116x->board; | |
4808a1c0 OK |
1530 | u32 val; |
1531 | unsigned long flags; | |
1532 | ||
1533 | spin_lock_irqsave(&isp116x->lock, flags); | |
1534 | ||
1535 | /* clear interrupt status and disable all interrupt sources */ | |
1536 | isp116x_write_reg16(isp116x, HCuPINT, 0xff); | |
1537 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
1538 | ||
1539 | val = isp116x_read_reg16(isp116x, HCCHIPID); | |
1540 | if ((val & HCCHIPID_MASK) != HCCHIPID_MAGIC) { | |
1541 | ERR("Invalid chip ID %04x\n", val); | |
1542 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1543 | return -ENODEV; | |
1544 | } | |
1545 | ||
9a57116b OK |
1546 | /* To be removed in future */ |
1547 | hcd->uses_new_polling = 1; | |
1548 | ||
4808a1c0 OK |
1549 | isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE); |
1550 | isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE); | |
1551 | ||
1552 | /* ----- HW conf */ | |
1553 | val = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); | |
1554 | if (board->sel15Kres) | |
1555 | val |= HCHWCFG_15KRSEL; | |
1556 | /* Remote wakeup won't work without working clock */ | |
d4d62861 | 1557 | if (board->remote_wakeup_enable) |
4808a1c0 OK |
1558 | val |= HCHWCFG_CLKNOTSTOP; |
1559 | if (board->oc_enable) | |
1560 | val |= HCHWCFG_ANALOG_OC; | |
1561 | if (board->int_act_high) | |
1562 | val |= HCHWCFG_INT_POL; | |
1563 | if (board->int_edge_triggered) | |
1564 | val |= HCHWCFG_INT_TRIGGER; | |
1565 | isp116x_write_reg16(isp116x, HCHWCFG, val); | |
1566 | ||
1567 | /* ----- Root hub conf */ | |
dc5bed09 | 1568 | val = (25 << 24) & RH_A_POTPGT; |
165c0f39 OK |
1569 | /* AN10003_1.pdf recommends RH_A_NPS (no power switching) to |
1570 | be always set. Yet, instead, we request individual port | |
1571 | power switching. */ | |
1572 | val |= RH_A_PSM; | |
9d233d9f OK |
1573 | /* Report overcurrent per port */ |
1574 | val |= RH_A_OCPM; | |
4808a1c0 OK |
1575 | isp116x_write_reg32(isp116x, HCRHDESCA, val); |
1576 | isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA); | |
1577 | ||
1578 | val = RH_B_PPCM; | |
1579 | isp116x_write_reg32(isp116x, HCRHDESCB, val); | |
1580 | isp116x->rhdescb = isp116x_read_reg32(isp116x, HCRHDESCB); | |
1581 | ||
1582 | val = 0; | |
1583 | if (board->remote_wakeup_enable) { | |
1584 | hcd->can_wakeup = 1; | |
1585 | val |= RH_HS_DRWE; | |
1586 | } | |
1587 | isp116x_write_reg32(isp116x, HCRHSTATUS, val); | |
1588 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); | |
1589 | ||
1590 | isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf); | |
4808a1c0 | 1591 | |
4808a1c0 OK |
1592 | hcd->state = HC_STATE_RUNNING; |
1593 | ||
4808a1c0 OK |
1594 | /* Set up interrupts */ |
1595 | isp116x->intenb = HCINT_MIE | HCINT_RHSC | HCINT_UE; | |
1596 | if (board->remote_wakeup_enable) | |
1597 | isp116x->intenb |= HCINT_RD; | |
1598 | isp116x->irqenb = HCuPINT_ATL | HCuPINT_OPR; /* | HCuPINT_SUSP; */ | |
1599 | isp116x_write_reg32(isp116x, HCINTENB, isp116x->intenb); | |
1600 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); | |
1601 | ||
1602 | /* Go operational */ | |
1603 | val = HCCONTROL_USB_OPER; | |
4808a1c0 OK |
1604 | if (board->remote_wakeup_enable) |
1605 | val |= HCCONTROL_RWE; | |
1606 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1607 | ||
1608 | /* Disable ports to avoid race in device enumeration */ | |
1609 | isp116x_write_reg32(isp116x, HCRHPORT1, RH_PS_CCS); | |
1610 | isp116x_write_reg32(isp116x, HCRHPORT2, RH_PS_CCS); | |
1611 | ||
1612 | isp116x_show_regs(isp116x); | |
1613 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1614 | return 0; | |
1615 | } | |
1616 | ||
1617 | /*-----------------------------------------------------------------*/ | |
1618 | ||
1619 | static struct hc_driver isp116x_hc_driver = { | |
1620 | .description = hcd_name, | |
1621 | .product_desc = "ISP116x Host Controller", | |
1622 | .hcd_priv_size = sizeof(struct isp116x), | |
1623 | ||
1624 | .irq = isp116x_irq, | |
1625 | .flags = HCD_USB11, | |
1626 | ||
1627 | .reset = isp116x_reset, | |
1628 | .start = isp116x_start, | |
1629 | .stop = isp116x_stop, | |
1630 | ||
1631 | .urb_enqueue = isp116x_urb_enqueue, | |
1632 | .urb_dequeue = isp116x_urb_dequeue, | |
1633 | .endpoint_disable = isp116x_endpoint_disable, | |
1634 | ||
1635 | .get_frame_number = isp116x_get_frame, | |
1636 | ||
1637 | .hub_status_data = isp116x_hub_status_data, | |
1638 | .hub_control = isp116x_hub_control, | |
1639 | .hub_suspend = isp116x_hub_suspend, | |
1640 | .hub_resume = isp116x_hub_resume, | |
1641 | }; | |
1642 | ||
1643 | /*----------------------------------------------------------------*/ | |
1644 | ||
1645 | static int __init_or_module isp116x_remove(struct device *dev) | |
1646 | { | |
1647 | struct usb_hcd *hcd = dev_get_drvdata(dev); | |
589a0083 | 1648 | struct isp116x *isp116x; |
4808a1c0 OK |
1649 | struct platform_device *pdev; |
1650 | struct resource *res; | |
1651 | ||
9a57116b | 1652 | if (!hcd) |
589a0083 OK |
1653 | return 0; |
1654 | isp116x = hcd_to_isp116x(hcd); | |
4808a1c0 OK |
1655 | pdev = container_of(dev, struct platform_device, dev); |
1656 | remove_debug_file(isp116x); | |
1657 | usb_remove_hcd(hcd); | |
1658 | ||
1659 | iounmap(isp116x->data_reg); | |
1660 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1661 | release_mem_region(res->start, 2); | |
1662 | iounmap(isp116x->addr_reg); | |
1663 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1664 | release_mem_region(res->start, 2); | |
1665 | ||
1666 | usb_put_hcd(hcd); | |
1667 | return 0; | |
1668 | } | |
1669 | ||
1670 | #define resource_len(r) (((r)->end - (r)->start) + 1) | |
1671 | ||
1672 | static int __init isp116x_probe(struct device *dev) | |
1673 | { | |
1674 | struct usb_hcd *hcd; | |
1675 | struct isp116x *isp116x; | |
1676 | struct platform_device *pdev; | |
1677 | struct resource *addr, *data; | |
1678 | void __iomem *addr_reg; | |
1679 | void __iomem *data_reg; | |
1680 | int irq; | |
1681 | int ret = 0; | |
1682 | ||
1683 | pdev = container_of(dev, struct platform_device, dev); | |
1684 | if (pdev->num_resources < 3) { | |
1685 | ret = -ENODEV; | |
1686 | goto err1; | |
1687 | } | |
1688 | ||
1689 | data = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1690 | addr = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1691 | irq = platform_get_irq(pdev, 0); | |
1692 | if (!addr || !data || irq < 0) { | |
1693 | ret = -ENODEV; | |
1694 | goto err1; | |
1695 | } | |
1696 | ||
1697 | if (dev->dma_mask) { | |
1698 | DBG("DMA not supported\n"); | |
1699 | ret = -EINVAL; | |
1700 | goto err1; | |
1701 | } | |
1702 | ||
1703 | if (!request_mem_region(addr->start, 2, hcd_name)) { | |
1704 | ret = -EBUSY; | |
1705 | goto err1; | |
1706 | } | |
1707 | addr_reg = ioremap(addr->start, resource_len(addr)); | |
1708 | if (addr_reg == NULL) { | |
1709 | ret = -ENOMEM; | |
1710 | goto err2; | |
1711 | } | |
1712 | if (!request_mem_region(data->start, 2, hcd_name)) { | |
1713 | ret = -EBUSY; | |
1714 | goto err3; | |
1715 | } | |
1716 | data_reg = ioremap(data->start, resource_len(data)); | |
1717 | if (data_reg == NULL) { | |
1718 | ret = -ENOMEM; | |
1719 | goto err4; | |
1720 | } | |
1721 | ||
1722 | /* allocate and initialize hcd */ | |
1723 | hcd = usb_create_hcd(&isp116x_hc_driver, dev, dev->bus_id); | |
1724 | if (!hcd) { | |
1725 | ret = -ENOMEM; | |
1726 | goto err5; | |
1727 | } | |
1728 | /* this rsrc_start is bogus */ | |
1729 | hcd->rsrc_start = addr->start; | |
1730 | isp116x = hcd_to_isp116x(hcd); | |
1731 | isp116x->data_reg = data_reg; | |
1732 | isp116x->addr_reg = addr_reg; | |
1733 | spin_lock_init(&isp116x->lock); | |
1734 | INIT_LIST_HEAD(&isp116x->async); | |
1735 | INIT_WORK(&isp116x->rh_resume, isp116x_rh_resume, hcd); | |
1736 | isp116x->board = dev->platform_data; | |
1737 | ||
1738 | if (!isp116x->board) { | |
1739 | ERR("Platform data structure not initialized\n"); | |
1740 | ret = -ENODEV; | |
1741 | goto err6; | |
1742 | } | |
1743 | if (isp116x_check_platform_delay(isp116x)) { | |
1744 | ERR("USE_PLATFORM_DELAY defined, but delay function not " | |
1745 | "implemented.\n"); | |
1746 | ERR("See comments in drivers/usb/host/isp116x-hcd.c\n"); | |
1747 | ret = -ENODEV; | |
1748 | goto err6; | |
1749 | } | |
1750 | ||
1751 | ret = usb_add_hcd(hcd, irq, SA_INTERRUPT); | |
1752 | if (ret != 0) | |
1753 | goto err6; | |
1754 | ||
1755 | create_debug_file(isp116x); | |
1756 | return 0; | |
1757 | ||
1758 | err6: | |
1759 | usb_put_hcd(hcd); | |
1760 | err5: | |
1761 | iounmap(data_reg); | |
1762 | err4: | |
1763 | release_mem_region(data->start, 2); | |
1764 | err3: | |
1765 | iounmap(addr_reg); | |
1766 | err2: | |
1767 | release_mem_region(addr->start, 2); | |
1768 | err1: | |
1769 | ERR("init error, %d\n", ret); | |
1770 | return ret; | |
1771 | } | |
1772 | ||
1773 | #ifdef CONFIG_PM | |
1774 | /* | |
1775 | Suspend of platform device | |
1776 | */ | |
9480e307 | 1777 | static int isp116x_suspend(struct device *dev, pm_message_t state) |
4808a1c0 OK |
1778 | { |
1779 | int ret = 0; | |
1780 | struct usb_hcd *hcd = dev_get_drvdata(dev); | |
1781 | ||
9480e307 | 1782 | VDBG("%s: state %x\n", __func__, state); |
4808a1c0 | 1783 | |
390a8c34 | 1784 | ret = usb_suspend_device(hcd->self.root_hub); |
4808a1c0 OK |
1785 | if (!ret) { |
1786 | dev->power.power_state = state; | |
17f8bb73 | 1787 | INFO("%s suspended\n", hcd_name); |
4808a1c0 | 1788 | } else |
17f8bb73 | 1789 | ERR("%s suspend failed\n", hcd_name); |
4808a1c0 OK |
1790 | |
1791 | return ret; | |
1792 | } | |
1793 | ||
1794 | /* | |
1795 | Resume platform device | |
1796 | */ | |
9480e307 | 1797 | static int isp116x_resume(struct device *dev) |
4808a1c0 OK |
1798 | { |
1799 | int ret = 0; | |
1800 | struct usb_hcd *hcd = dev_get_drvdata(dev); | |
1801 | ||
9480e307 | 1802 | VDBG("%s: state %x\n", __func__, dev->power.power_state); |
4808a1c0 OK |
1803 | |
1804 | ret = usb_resume_device(hcd->self.root_hub); | |
1805 | if (!ret) { | |
1806 | dev->power.power_state = PMSG_ON; | |
1807 | VDBG("%s resumed\n", (char *)hcd_name); | |
1808 | } | |
1809 | return ret; | |
1810 | } | |
1811 | ||
1812 | #else | |
1813 | ||
1814 | #define isp116x_suspend NULL | |
1815 | #define isp116x_resume NULL | |
1816 | ||
1817 | #endif | |
1818 | ||
1819 | static struct device_driver isp116x_driver = { | |
1820 | .name = (char *)hcd_name, | |
1821 | .bus = &platform_bus_type, | |
1822 | .probe = isp116x_probe, | |
1823 | .remove = isp116x_remove, | |
1824 | .suspend = isp116x_suspend, | |
1825 | .resume = isp116x_resume, | |
1826 | }; | |
1827 | ||
1828 | /*-----------------------------------------------------------------*/ | |
1829 | ||
1830 | static int __init isp116x_init(void) | |
1831 | { | |
1832 | if (usb_disabled()) | |
1833 | return -ENODEV; | |
1834 | ||
1835 | INFO("driver %s, %s\n", hcd_name, DRIVER_VERSION); | |
1836 | return driver_register(&isp116x_driver); | |
1837 | } | |
1838 | ||
1839 | module_init(isp116x_init); | |
1840 | ||
1841 | static void __exit isp116x_cleanup(void) | |
1842 | { | |
1843 | driver_unregister(&isp116x_driver); | |
1844 | } | |
1845 | ||
1846 | module_exit(isp116x_cleanup); |