Commit | Line | Data |
---|---|---|
4808a1c0 OK |
1 | /* |
2 | * ISP116x HCD (Host Controller Driver) for USB. | |
3 | * | |
4 | * Derived from the SL811 HCD, rewritten for ISP116x. | |
5 | * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee> | |
6 | * | |
7 | * Portions: | |
8 | * Copyright (C) 2004 Psion Teklogix (for NetBook PRO) | |
9 | * Copyright (C) 2004 David Brownell | |
10 | * | |
11 | * Periodic scheduling is based on Roman's OHCI code | |
12 | * Copyright (C) 1999 Roman Weissgaerber | |
13 | * | |
14 | */ | |
15 | ||
16 | /* | |
17 | * The driver basically works. A number of people have used it with a range | |
18 | * of devices. | |
19 | * | |
17f8bb73 | 20 | * The driver passes all usbtests 1-14. |
4808a1c0 OK |
21 | * |
22 | * Suspending/resuming of root hub via sysfs works. Remote wakeup works too. | |
23 | * And suspending/resuming of platform device works too. Suspend/resume | |
24 | * via HCD operations vector is not implemented. | |
25 | * | |
26 | * Iso transfer support is not implemented. Adding this would include | |
27 | * implementing recovery from the failure to service the processed ITL | |
28 | * fifo ram in time, which will involve chip reset. | |
29 | * | |
30 | * TODO: | |
31 | + More testing of suspend/resume. | |
32 | */ | |
33 | ||
34 | /* | |
35 | ISP116x chips require certain delays between accesses to its | |
36 | registers. The following timing options exist. | |
37 | ||
38 | 1. Configure your memory controller (the best) | |
39 | 2. Implement platform-specific delay function possibly | |
40 | combined with configuring the memory controller; see | |
41 | include/linux/usb-isp116x.h for more info. Some broken | |
42 | memory controllers line LH7A400 SMC need this. Also, | |
43 | uncomment for that to work the following | |
44 | USE_PLATFORM_DELAY macro. | |
45 | 3. Use ndelay (easiest, poorest). For that, uncomment | |
46 | the following USE_NDELAY macro. | |
47 | */ | |
48 | #define USE_PLATFORM_DELAY | |
49 | //#define USE_NDELAY | |
50 | ||
51 | //#define DEBUG | |
52 | //#define VERBOSE | |
53 | /* Transfer descriptors. See dump_ptd() for printout format */ | |
54 | //#define PTD_TRACE | |
55 | /* enqueuing/finishing log of urbs */ | |
56 | //#define URB_TRACE | |
57 | ||
4808a1c0 | 58 | #include <linux/module.h> |
4808a1c0 | 59 | #include <linux/delay.h> |
959eea21 OK |
60 | #include <linux/debugfs.h> |
61 | #include <linux/seq_file.h> | |
4808a1c0 | 62 | #include <linux/errno.h> |
4808a1c0 | 63 | #include <linux/list.h> |
5a0e3ad6 | 64 | #include <linux/slab.h> |
4808a1c0 | 65 | #include <linux/usb.h> |
325a4af6 | 66 | #include <linux/usb/isp116x.h> |
27729aad | 67 | #include <linux/usb/hcd.h> |
d052d1be | 68 | #include <linux/platform_device.h> |
4808a1c0 OK |
69 | |
70 | #include <asm/io.h> | |
71 | #include <asm/irq.h> | |
4808a1c0 OK |
72 | #include <asm/byteorder.h> |
73 | ||
4808a1c0 OK |
74 | #include "isp116x.h" |
75 | ||
959eea21 | 76 | #define DRIVER_VERSION "03 Nov 2005" |
4808a1c0 OK |
77 | #define DRIVER_DESC "ISP116x USB Host Controller Driver" |
78 | ||
79 | MODULE_DESCRIPTION(DRIVER_DESC); | |
80 | MODULE_LICENSE("GPL"); | |
81 | ||
82 | static const char hcd_name[] = "isp116x-hcd"; | |
83 | ||
84 | /*-----------------------------------------------------------------*/ | |
85 | ||
86 | /* | |
87 | Write len bytes to fifo, pad till 32-bit boundary | |
88 | */ | |
89 | static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len) | |
90 | { | |
91 | u8 *dp = (u8 *) buf; | |
92 | u16 *dp2 = (u16 *) buf; | |
93 | u16 w; | |
94 | int quot = len % 4; | |
95 | ||
28874b7e JM |
96 | /* buffer is already in 'usb data order', which is LE. */ |
97 | /* When reading buffer as u16, we have to take care byte order */ | |
98 | /* doesn't get mixed up */ | |
99 | ||
4808a1c0 OK |
100 | if ((unsigned long)dp2 & 1) { |
101 | /* not aligned */ | |
102 | for (; len > 1; len -= 2) { | |
103 | w = *dp++; | |
104 | w |= *dp++ << 8; | |
105 | isp116x_raw_write_data16(isp116x, w); | |
106 | } | |
107 | if (len) | |
108 | isp116x_write_data16(isp116x, (u16) * dp); | |
109 | } else { | |
110 | /* aligned */ | |
28874b7e JM |
111 | for (; len > 1; len -= 2) { |
112 | /* Keep byte order ! */ | |
113 | isp116x_raw_write_data16(isp116x, cpu_to_le16(*dp2++)); | |
114 | } | |
115 | ||
4808a1c0 OK |
116 | if (len) |
117 | isp116x_write_data16(isp116x, 0xff & *((u8 *) dp2)); | |
118 | } | |
119 | if (quot == 1 || quot == 2) | |
120 | isp116x_raw_write_data16(isp116x, 0); | |
121 | } | |
122 | ||
123 | /* | |
124 | Read len bytes from fifo and then read till 32-bit boundary. | |
125 | */ | |
126 | static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len) | |
127 | { | |
128 | u8 *dp = (u8 *) buf; | |
129 | u16 *dp2 = (u16 *) buf; | |
130 | u16 w; | |
131 | int quot = len % 4; | |
132 | ||
28874b7e JM |
133 | /* buffer is already in 'usb data order', which is LE. */ |
134 | /* When reading buffer as u16, we have to take care byte order */ | |
135 | /* doesn't get mixed up */ | |
136 | ||
4808a1c0 OK |
137 | if ((unsigned long)dp2 & 1) { |
138 | /* not aligned */ | |
139 | for (; len > 1; len -= 2) { | |
140 | w = isp116x_raw_read_data16(isp116x); | |
141 | *dp++ = w & 0xff; | |
142 | *dp++ = (w >> 8) & 0xff; | |
143 | } | |
28874b7e | 144 | |
4808a1c0 OK |
145 | if (len) |
146 | *dp = 0xff & isp116x_read_data16(isp116x); | |
147 | } else { | |
148 | /* aligned */ | |
28874b7e JM |
149 | for (; len > 1; len -= 2) { |
150 | /* Keep byte order! */ | |
151 | *dp2++ = le16_to_cpu(isp116x_raw_read_data16(isp116x)); | |
152 | } | |
153 | ||
4808a1c0 OK |
154 | if (len) |
155 | *(u8 *) dp2 = 0xff & isp116x_read_data16(isp116x); | |
156 | } | |
157 | if (quot == 1 || quot == 2) | |
158 | isp116x_raw_read_data16(isp116x); | |
159 | } | |
160 | ||
161 | /* | |
162 | Write ptd's and data for scheduled transfers into | |
163 | the fifo ram. Fifo must be empty and ready. | |
164 | */ | |
165 | static void pack_fifo(struct isp116x *isp116x) | |
166 | { | |
167 | struct isp116x_ep *ep; | |
168 | struct ptd *ptd; | |
169 | int buflen = isp116x->atl_last_dir == PTD_DIR_IN | |
170 | ? isp116x->atl_bufshrt : isp116x->atl_buflen; | |
4808a1c0 OK |
171 | |
172 | isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT); | |
173 | isp116x_write_reg16(isp116x, HCXFERCTR, buflen); | |
174 | isp116x_write_addr(isp116x, HCATLPORT | ISP116x_WRITE_OFFSET); | |
175 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
4808a1c0 OK |
176 | ptd = &ep->ptd; |
177 | dump_ptd(ptd); | |
178 | dump_ptd_out_data(ptd, ep->data); | |
179 | isp116x_write_data16(isp116x, ptd->count); | |
180 | isp116x_write_data16(isp116x, ptd->mps); | |
181 | isp116x_write_data16(isp116x, ptd->len); | |
182 | isp116x_write_data16(isp116x, ptd->faddr); | |
183 | buflen -= sizeof(struct ptd); | |
184 | /* Skip writing data for last IN PTD */ | |
185 | if (ep->active || (isp116x->atl_last_dir != PTD_DIR_IN)) { | |
186 | write_ptddata_to_fifo(isp116x, ep->data, ep->length); | |
187 | buflen -= ALIGN(ep->length, 4); | |
188 | } | |
189 | } | |
190 | BUG_ON(buflen); | |
191 | } | |
192 | ||
193 | /* | |
194 | Read the processed ptd's and data from fifo ram back to | |
195 | URBs' buffers. Fifo must be full and done | |
196 | */ | |
197 | static void unpack_fifo(struct isp116x *isp116x) | |
198 | { | |
199 | struct isp116x_ep *ep; | |
200 | struct ptd *ptd; | |
201 | int buflen = isp116x->atl_last_dir == PTD_DIR_IN | |
202 | ? isp116x->atl_buflen : isp116x->atl_bufshrt; | |
203 | ||
204 | isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT); | |
205 | isp116x_write_reg16(isp116x, HCXFERCTR, buflen); | |
206 | isp116x_write_addr(isp116x, HCATLPORT); | |
207 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
208 | ptd = &ep->ptd; | |
209 | ptd->count = isp116x_read_data16(isp116x); | |
210 | ptd->mps = isp116x_read_data16(isp116x); | |
211 | ptd->len = isp116x_read_data16(isp116x); | |
212 | ptd->faddr = isp116x_read_data16(isp116x); | |
213 | buflen -= sizeof(struct ptd); | |
214 | /* Skip reading data for last Setup or Out PTD */ | |
215 | if (ep->active || (isp116x->atl_last_dir == PTD_DIR_IN)) { | |
216 | read_ptddata_from_fifo(isp116x, ep->data, ep->length); | |
217 | buflen -= ALIGN(ep->length, 4); | |
218 | } | |
219 | dump_ptd(ptd); | |
220 | dump_ptd_in_data(ptd, ep->data); | |
221 | } | |
222 | BUG_ON(buflen); | |
223 | } | |
224 | ||
225 | /*---------------------------------------------------------------*/ | |
226 | ||
227 | /* | |
228 | Set up PTD's. | |
229 | */ | |
230 | static void preproc_atl_queue(struct isp116x *isp116x) | |
231 | { | |
232 | struct isp116x_ep *ep; | |
233 | struct urb *urb; | |
234 | struct ptd *ptd; | |
f10eff26 | 235 | u16 len; |
4808a1c0 OK |
236 | |
237 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
f10eff26 OK |
238 | u16 toggle = 0, dir = PTD_DIR_SETUP; |
239 | ||
4808a1c0 OK |
240 | BUG_ON(list_empty(&ep->hep->urb_list)); |
241 | urb = container_of(ep->hep->urb_list.next, | |
242 | struct urb, urb_list); | |
243 | ptd = &ep->ptd; | |
244 | len = ep->length; | |
4808a1c0 OK |
245 | ep->data = (unsigned char *)urb->transfer_buffer |
246 | + urb->actual_length; | |
247 | ||
248 | switch (ep->nextpid) { | |
249 | case USB_PID_IN: | |
250 | toggle = usb_gettoggle(urb->dev, ep->epnum, 0); | |
251 | dir = PTD_DIR_IN; | |
252 | break; | |
253 | case USB_PID_OUT: | |
254 | toggle = usb_gettoggle(urb->dev, ep->epnum, 1); | |
255 | dir = PTD_DIR_OUT; | |
256 | break; | |
257 | case USB_PID_SETUP: | |
4808a1c0 OK |
258 | len = sizeof(struct usb_ctrlrequest); |
259 | ep->data = urb->setup_packet; | |
260 | break; | |
261 | case USB_PID_ACK: | |
262 | toggle = 1; | |
263 | len = 0; | |
264 | dir = (urb->transfer_buffer_length | |
265 | && usb_pipein(urb->pipe)) | |
266 | ? PTD_DIR_OUT : PTD_DIR_IN; | |
267 | break; | |
268 | default: | |
4808a1c0 OK |
269 | ERR("%s %d: ep->nextpid %d\n", __func__, __LINE__, |
270 | ep->nextpid); | |
17f8bb73 | 271 | BUG(); |
4808a1c0 OK |
272 | } |
273 | ||
274 | ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); | |
275 | ptd->mps = PTD_MPS(ep->maxpacket) | |
276 | | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | |
277 | | PTD_EP(ep->epnum); | |
278 | ptd->len = PTD_LEN(len) | PTD_DIR(dir); | |
279 | ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); | |
4808a1c0 OK |
280 | if (!ep->active) { |
281 | ptd->mps |= PTD_LAST_MSK; | |
282 | isp116x->atl_last_dir = dir; | |
283 | } | |
284 | isp116x->atl_bufshrt = sizeof(struct ptd) + isp116x->atl_buflen; | |
285 | isp116x->atl_buflen = isp116x->atl_bufshrt + ALIGN(len, 4); | |
286 | } | |
287 | } | |
288 | ||
1b4cd43b AS |
289 | /* |
290 | Take done or failed requests out of schedule. Give back | |
291 | processed urbs. | |
292 | */ | |
293 | static void finish_request(struct isp116x *isp116x, struct isp116x_ep *ep, | |
4a00027d | 294 | struct urb *urb, int status) |
1b4cd43b AS |
295 | __releases(isp116x->lock) __acquires(isp116x->lock) |
296 | { | |
297 | unsigned i; | |
298 | ||
1b4cd43b AS |
299 | ep->error_count = 0; |
300 | ||
301 | if (usb_pipecontrol(urb->pipe)) | |
302 | ep->nextpid = USB_PID_SETUP; | |
303 | ||
304 | urb_dbg(urb, "Finish"); | |
305 | ||
e9df41c5 | 306 | usb_hcd_unlink_urb_from_ep(isp116x_to_hcd(isp116x), urb); |
1b4cd43b | 307 | spin_unlock(&isp116x->lock); |
4a00027d | 308 | usb_hcd_giveback_urb(isp116x_to_hcd(isp116x), urb, status); |
1b4cd43b AS |
309 | spin_lock(&isp116x->lock); |
310 | ||
311 | /* take idle endpoints out of the schedule */ | |
312 | if (!list_empty(&ep->hep->urb_list)) | |
313 | return; | |
314 | ||
315 | /* async deschedule */ | |
316 | if (!list_empty(&ep->schedule)) { | |
317 | list_del_init(&ep->schedule); | |
318 | return; | |
319 | } | |
320 | ||
321 | /* periodic deschedule */ | |
322 | DBG("deschedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); | |
323 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { | |
324 | struct isp116x_ep *temp; | |
325 | struct isp116x_ep **prev = &isp116x->periodic[i]; | |
326 | ||
327 | while (*prev && ((temp = *prev) != ep)) | |
328 | prev = &temp->next; | |
329 | if (*prev) | |
330 | *prev = ep->next; | |
331 | isp116x->load[i] -= ep->load; | |
332 | } | |
333 | ep->branch = PERIODIC_SIZE; | |
334 | isp116x_to_hcd(isp116x)->self.bandwidth_allocated -= | |
335 | ep->load / ep->period; | |
336 | ||
337 | /* switch irq type? */ | |
338 | if (!--isp116x->periodic_count) { | |
339 | isp116x->irqenb &= ~HCuPINT_SOF; | |
340 | isp116x->irqenb |= HCuPINT_ATL; | |
341 | } | |
342 | } | |
343 | ||
4808a1c0 OK |
344 | /* |
345 | Analyze transfer results, handle partial transfers and errors | |
346 | */ | |
347 | static void postproc_atl_queue(struct isp116x *isp116x) | |
348 | { | |
349 | struct isp116x_ep *ep; | |
350 | struct urb *urb; | |
351 | struct usb_device *udev; | |
352 | struct ptd *ptd; | |
353 | int short_not_ok; | |
1b4cd43b | 354 | int status; |
4808a1c0 OK |
355 | u8 cc; |
356 | ||
357 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
358 | BUG_ON(list_empty(&ep->hep->urb_list)); | |
359 | urb = | |
360 | container_of(ep->hep->urb_list.next, struct urb, urb_list); | |
361 | udev = urb->dev; | |
362 | ptd = &ep->ptd; | |
363 | cc = PTD_GET_CC(ptd); | |
4808a1c0 | 364 | short_not_ok = 1; |
1b4cd43b | 365 | status = -EINPROGRESS; |
4808a1c0 OK |
366 | |
367 | /* Data underrun is special. For allowed underrun | |
368 | we clear the error and continue as normal. For | |
369 | forbidden underrun we finish the DATA stage | |
370 | immediately while for control transfer, | |
371 | we do a STATUS stage. */ | |
372 | if (cc == TD_DATAUNDERRUN) { | |
1b4cd43b AS |
373 | if (!(urb->transfer_flags & URB_SHORT_NOT_OK) || |
374 | usb_pipecontrol(urb->pipe)) { | |
375 | DBG("Allowed or control data underrun\n"); | |
4808a1c0 OK |
376 | cc = TD_CC_NOERROR; |
377 | short_not_ok = 0; | |
378 | } else { | |
379 | ep->error_count = 1; | |
1b4cd43b AS |
380 | usb_settoggle(udev, ep->epnum, |
381 | ep->nextpid == USB_PID_OUT, | |
382 | PTD_GET_TOGGLE(ptd)); | |
e9b765de | 383 | urb->actual_length += PTD_GET_COUNT(ptd); |
1b4cd43b AS |
384 | status = cc_to_error[TD_DATAUNDERRUN]; |
385 | goto done; | |
4808a1c0 OK |
386 | } |
387 | } | |
4808a1c0 OK |
388 | |
389 | if (cc != TD_CC_NOERROR && cc != TD_NOTACCESSED | |
390 | && (++ep->error_count >= 3 || cc == TD_CC_STALL | |
391 | || cc == TD_DATAOVERRUN)) { | |
1b4cd43b | 392 | status = cc_to_error[cc]; |
4808a1c0 OK |
393 | if (ep->nextpid == USB_PID_ACK) |
394 | ep->nextpid = 0; | |
1b4cd43b | 395 | goto done; |
4808a1c0 OK |
396 | } |
397 | /* According to usb spec, zero-length Int transfer signals | |
398 | finishing of the urb. Hey, does this apply only | |
399 | for IN endpoints? */ | |
400 | if (usb_pipeint(urb->pipe) && !PTD_GET_LEN(ptd)) { | |
1b4cd43b AS |
401 | status = 0; |
402 | goto done; | |
4808a1c0 OK |
403 | } |
404 | ||
405 | /* Relax after previously failed, but later succeeded | |
406 | or correctly NAK'ed retransmission attempt */ | |
407 | if (ep->error_count | |
408 | && (cc == TD_CC_NOERROR || cc == TD_NOTACCESSED)) | |
409 | ep->error_count = 0; | |
410 | ||
411 | /* Take into account idiosyncracies of the isp116x chip | |
412 | regarding toggle bit for failed transfers */ | |
413 | if (ep->nextpid == USB_PID_OUT) | |
414 | usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd) | |
415 | ^ (ep->error_count > 0)); | |
416 | else if (ep->nextpid == USB_PID_IN) | |
417 | usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd) | |
418 | ^ (ep->error_count > 0)); | |
419 | ||
420 | switch (ep->nextpid) { | |
421 | case USB_PID_IN: | |
422 | case USB_PID_OUT: | |
423 | urb->actual_length += PTD_GET_COUNT(ptd); | |
424 | if (PTD_GET_ACTIVE(ptd) | |
425 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
426 | break; | |
427 | if (urb->transfer_buffer_length != urb->actual_length) { | |
428 | if (short_not_ok) | |
429 | break; | |
430 | } else { | |
431 | if (urb->transfer_flags & URB_ZERO_PACKET | |
432 | && ep->nextpid == USB_PID_OUT | |
433 | && !(PTD_GET_COUNT(ptd) % ep->maxpacket)) { | |
434 | DBG("Zero packet requested\n"); | |
435 | break; | |
436 | } | |
437 | } | |
438 | /* All data for this URB is transferred, let's finish */ | |
439 | if (usb_pipecontrol(urb->pipe)) | |
440 | ep->nextpid = USB_PID_ACK; | |
1b4cd43b AS |
441 | else |
442 | status = 0; | |
4808a1c0 OK |
443 | break; |
444 | case USB_PID_SETUP: | |
445 | if (PTD_GET_ACTIVE(ptd) | |
446 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
447 | break; | |
448 | if (urb->transfer_buffer_length == urb->actual_length) | |
449 | ep->nextpid = USB_PID_ACK; | |
450 | else if (usb_pipeout(urb->pipe)) { | |
451 | usb_settoggle(udev, 0, 1, 1); | |
452 | ep->nextpid = USB_PID_OUT; | |
453 | } else { | |
454 | usb_settoggle(udev, 0, 0, 1); | |
455 | ep->nextpid = USB_PID_IN; | |
456 | } | |
457 | break; | |
458 | case USB_PID_ACK: | |
459 | if (PTD_GET_ACTIVE(ptd) | |
460 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
461 | break; | |
b0d9efba | 462 | status = 0; |
4808a1c0 OK |
463 | ep->nextpid = 0; |
464 | break; | |
465 | default: | |
959eea21 | 466 | BUG(); |
4808a1c0 | 467 | } |
4808a1c0 | 468 | |
1b4cd43b | 469 | done: |
4a00027d AS |
470 | if (status != -EINPROGRESS || urb->unlinked) |
471 | finish_request(isp116x, ep, urb, status); | |
4808a1c0 OK |
472 | } |
473 | } | |
474 | ||
475 | /* | |
476 | Scan transfer lists, schedule transfers, send data off | |
477 | to chip. | |
478 | */ | |
479 | static void start_atl_transfers(struct isp116x *isp116x) | |
480 | { | |
481 | struct isp116x_ep *last_ep = NULL, *ep; | |
482 | struct urb *urb; | |
483 | u16 load = 0; | |
484 | int len, index, speed, byte_time; | |
485 | ||
486 | if (atomic_read(&isp116x->atl_finishing)) | |
487 | return; | |
488 | ||
489 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) | |
490 | return; | |
491 | ||
492 | /* FIFO not empty? */ | |
493 | if (isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_FULL) | |
494 | return; | |
495 | ||
496 | isp116x->atl_active = NULL; | |
497 | isp116x->atl_buflen = isp116x->atl_bufshrt = 0; | |
498 | ||
499 | /* Schedule int transfers */ | |
500 | if (isp116x->periodic_count) { | |
501 | isp116x->fmindex = index = | |
502 | (isp116x->fmindex + 1) & (PERIODIC_SIZE - 1); | |
503 | if ((load = isp116x->load[index])) { | |
504 | /* Bring all int transfers for this frame | |
505 | into the active queue */ | |
506 | isp116x->atl_active = last_ep = | |
507 | isp116x->periodic[index]; | |
508 | while (last_ep->next) | |
509 | last_ep = (last_ep->active = last_ep->next); | |
510 | last_ep->active = NULL; | |
511 | } | |
512 | } | |
513 | ||
514 | /* Schedule control/bulk transfers */ | |
515 | list_for_each_entry(ep, &isp116x->async, schedule) { | |
516 | urb = container_of(ep->hep->urb_list.next, | |
517 | struct urb, urb_list); | |
518 | speed = urb->dev->speed; | |
519 | byte_time = speed == USB_SPEED_LOW | |
520 | ? BYTE_TIME_LOWSPEED : BYTE_TIME_FULLSPEED; | |
521 | ||
522 | if (ep->nextpid == USB_PID_SETUP) { | |
523 | len = sizeof(struct usb_ctrlrequest); | |
524 | } else if (ep->nextpid == USB_PID_ACK) { | |
525 | len = 0; | |
526 | } else { | |
527 | /* Find current free length ... */ | |
528 | len = (MAX_LOAD_LIMIT - load) / byte_time; | |
529 | ||
530 | /* ... then limit it to configured max size ... */ | |
531 | len = min(len, speed == USB_SPEED_LOW ? | |
532 | MAX_TRANSFER_SIZE_LOWSPEED : | |
533 | MAX_TRANSFER_SIZE_FULLSPEED); | |
534 | ||
535 | /* ... and finally cut to the multiple of MaxPacketSize, | |
536 | or to the real length if there's enough room. */ | |
537 | if (len < | |
538 | (urb->transfer_buffer_length - | |
539 | urb->actual_length)) { | |
540 | len -= len % ep->maxpacket; | |
541 | if (!len) | |
542 | continue; | |
543 | } else | |
544 | len = urb->transfer_buffer_length - | |
545 | urb->actual_length; | |
546 | BUG_ON(len < 0); | |
547 | } | |
548 | ||
549 | load += len * byte_time; | |
550 | if (load > MAX_LOAD_LIMIT) | |
551 | break; | |
552 | ||
553 | ep->active = NULL; | |
554 | ep->length = len; | |
555 | if (last_ep) | |
556 | last_ep->active = ep; | |
557 | else | |
558 | isp116x->atl_active = ep; | |
559 | last_ep = ep; | |
560 | } | |
561 | ||
562 | /* Avoid starving of endpoints */ | |
563 | if ((&isp116x->async)->next != (&isp116x->async)->prev) | |
564 | list_move(&isp116x->async, (&isp116x->async)->next); | |
565 | ||
566 | if (isp116x->atl_active) { | |
567 | preproc_atl_queue(isp116x); | |
568 | pack_fifo(isp116x); | |
569 | } | |
570 | } | |
571 | ||
572 | /* | |
573 | Finish the processed transfers | |
574 | */ | |
7d12e780 | 575 | static void finish_atl_transfers(struct isp116x *isp116x) |
4808a1c0 | 576 | { |
4808a1c0 OK |
577 | if (!isp116x->atl_active) |
578 | return; | |
579 | /* Fifo not ready? */ | |
580 | if (!(isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_DONE)) | |
581 | return; | |
582 | ||
583 | atomic_inc(&isp116x->atl_finishing); | |
584 | unpack_fifo(isp116x); | |
585 | postproc_atl_queue(isp116x); | |
4808a1c0 OK |
586 | atomic_dec(&isp116x->atl_finishing); |
587 | } | |
588 | ||
7d12e780 | 589 | static irqreturn_t isp116x_irq(struct usb_hcd *hcd) |
4808a1c0 OK |
590 | { |
591 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
592 | u16 irqstat; | |
593 | irqreturn_t ret = IRQ_NONE; | |
594 | ||
595 | spin_lock(&isp116x->lock); | |
596 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
597 | irqstat = isp116x_read_reg16(isp116x, HCuPINT); | |
598 | isp116x_write_reg16(isp116x, HCuPINT, irqstat); | |
599 | ||
600 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { | |
601 | ret = IRQ_HANDLED; | |
7d12e780 | 602 | finish_atl_transfers(isp116x); |
4808a1c0 OK |
603 | } |
604 | ||
605 | if (irqstat & HCuPINT_OPR) { | |
606 | u32 intstat = isp116x_read_reg32(isp116x, HCINTSTAT); | |
607 | isp116x_write_reg32(isp116x, HCINTSTAT, intstat); | |
608 | if (intstat & HCINT_UE) { | |
959eea21 OK |
609 | ERR("Unrecoverable error, HC is dead!\n"); |
610 | /* IRQ's are off, we do no DMA, | |
611 | perfectly ready to die ... */ | |
612 | hcd->state = HC_STATE_HALT; | |
69fff59d | 613 | usb_hc_died(hcd); |
959eea21 OK |
614 | ret = IRQ_HANDLED; |
615 | goto done; | |
4808a1c0 | 616 | } |
9a57116b OK |
617 | if (intstat & HCINT_RHSC) |
618 | /* When root hub or any of its ports is going | |
619 | to come out of suspend, it may take more | |
620 | than 10ms for status bits to stabilize. */ | |
621 | mod_timer(&hcd->rh_timer, jiffies | |
622 | + msecs_to_jiffies(20) + 1); | |
4808a1c0 OK |
623 | if (intstat & HCINT_RD) { |
624 | DBG("---- remote wakeup\n"); | |
ccdcf77a | 625 | usb_hcd_resume_root_hub(hcd); |
4808a1c0 OK |
626 | } |
627 | irqstat &= ~HCuPINT_OPR; | |
628 | ret = IRQ_HANDLED; | |
629 | } | |
630 | ||
631 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { | |
632 | start_atl_transfers(isp116x); | |
633 | } | |
634 | ||
635 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); | |
959eea21 | 636 | done: |
4808a1c0 OK |
637 | spin_unlock(&isp116x->lock); |
638 | return ret; | |
639 | } | |
640 | ||
641 | /*-----------------------------------------------------------------*/ | |
642 | ||
643 | /* usb 1.1 says max 90% of a frame is available for periodic transfers. | |
644 | * this driver doesn't promise that much since it's got to handle an | |
645 | * IRQ per packet; irq handling latencies also use up that time. | |
646 | */ | |
647 | ||
648 | /* out of 1000 us */ | |
649 | #define MAX_PERIODIC_LOAD 600 | |
650 | static int balance(struct isp116x *isp116x, u16 period, u16 load) | |
651 | { | |
652 | int i, branch = -ENOSPC; | |
653 | ||
654 | /* search for the least loaded schedule branch of that period | |
655 | which has enough bandwidth left unreserved. */ | |
656 | for (i = 0; i < period; i++) { | |
657 | if (branch < 0 || isp116x->load[branch] > isp116x->load[i]) { | |
658 | int j; | |
659 | ||
660 | for (j = i; j < PERIODIC_SIZE; j += period) { | |
661 | if ((isp116x->load[j] + load) | |
662 | > MAX_PERIODIC_LOAD) | |
663 | break; | |
664 | } | |
665 | if (j < PERIODIC_SIZE) | |
666 | continue; | |
667 | branch = i; | |
668 | } | |
669 | } | |
670 | return branch; | |
671 | } | |
672 | ||
673 | /* NB! ALL the code above this point runs with isp116x->lock | |
674 | held, irqs off | |
675 | */ | |
676 | ||
677 | /*-----------------------------------------------------------------*/ | |
678 | ||
679 | static int isp116x_urb_enqueue(struct usb_hcd *hcd, | |
e9df41c5 | 680 | struct urb *urb, |
55016f10 | 681 | gfp_t mem_flags) |
4808a1c0 OK |
682 | { |
683 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
684 | struct usb_device *udev = urb->dev; | |
685 | unsigned int pipe = urb->pipe; | |
686 | int is_out = !usb_pipein(pipe); | |
687 | int type = usb_pipetype(pipe); | |
688 | int epnum = usb_pipeendpoint(pipe); | |
e9df41c5 | 689 | struct usb_host_endpoint *hep = urb->ep; |
4808a1c0 OK |
690 | struct isp116x_ep *ep = NULL; |
691 | unsigned long flags; | |
692 | int i; | |
693 | int ret = 0; | |
694 | ||
695 | urb_dbg(urb, "Enqueue"); | |
696 | ||
697 | if (type == PIPE_ISOCHRONOUS) { | |
698 | ERR("Isochronous transfers not supported\n"); | |
699 | urb_dbg(urb, "Refused to enqueue"); | |
700 | return -ENXIO; | |
701 | } | |
702 | /* avoid all allocations within spinlocks: request or endpoint */ | |
703 | if (!hep->hcpriv) { | |
7b842b6e | 704 | ep = kzalloc(sizeof *ep, mem_flags); |
4808a1c0 OK |
705 | if (!ep) |
706 | return -ENOMEM; | |
707 | } | |
708 | ||
709 | spin_lock_irqsave(&isp116x->lock, flags); | |
710 | if (!HC_IS_RUNNING(hcd->state)) { | |
959eea21 | 711 | kfree(ep); |
4808a1c0 | 712 | ret = -ENODEV; |
e9df41c5 AS |
713 | goto fail_not_linked; |
714 | } | |
715 | ret = usb_hcd_link_urb_to_ep(hcd, urb); | |
716 | if (ret) { | |
717 | kfree(ep); | |
718 | goto fail_not_linked; | |
4808a1c0 OK |
719 | } |
720 | ||
721 | if (hep->hcpriv) | |
722 | ep = hep->hcpriv; | |
723 | else { | |
724 | INIT_LIST_HEAD(&ep->schedule); | |
6a8e87b2 | 725 | ep->udev = udev; |
4808a1c0 OK |
726 | ep->epnum = epnum; |
727 | ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); | |
728 | usb_settoggle(udev, epnum, is_out, 0); | |
729 | ||
730 | if (type == PIPE_CONTROL) { | |
731 | ep->nextpid = USB_PID_SETUP; | |
732 | } else if (is_out) { | |
733 | ep->nextpid = USB_PID_OUT; | |
734 | } else { | |
735 | ep->nextpid = USB_PID_IN; | |
736 | } | |
737 | ||
738 | if (urb->interval) { | |
739 | /* | |
740 | With INT URBs submitted, the driver works with SOF | |
741 | interrupt enabled and ATL interrupt disabled. After | |
742 | the PTDs are written to fifo ram, the chip starts | |
743 | fifo processing and usb transfers after the next | |
744 | SOF and continues until the transfers are finished | |
745 | (succeeded or failed) or the frame ends. Therefore, | |
746 | the transfers occur only in every second frame, | |
747 | while fifo reading/writing and data processing | |
748 | occur in every other second frame. */ | |
749 | if (urb->interval < 2) | |
750 | urb->interval = 2; | |
751 | if (urb->interval > 2 * PERIODIC_SIZE) | |
752 | urb->interval = 2 * PERIODIC_SIZE; | |
753 | ep->period = urb->interval >> 1; | |
754 | ep->branch = PERIODIC_SIZE; | |
755 | ep->load = usb_calc_bus_time(udev->speed, | |
756 | !is_out, | |
757 | (type == PIPE_ISOCHRONOUS), | |
758 | usb_maxpacket(udev, pipe, | |
759 | is_out)) / | |
760 | 1000; | |
761 | } | |
762 | hep->hcpriv = ep; | |
763 | ep->hep = hep; | |
764 | } | |
765 | ||
766 | /* maybe put endpoint into schedule */ | |
767 | switch (type) { | |
768 | case PIPE_CONTROL: | |
769 | case PIPE_BULK: | |
770 | if (list_empty(&ep->schedule)) | |
771 | list_add_tail(&ep->schedule, &isp116x->async); | |
772 | break; | |
773 | case PIPE_INTERRUPT: | |
774 | urb->interval = ep->period; | |
16e2e5f6 | 775 | ep->length = min_t(u32, ep->maxpacket, |
4808a1c0 OK |
776 | urb->transfer_buffer_length); |
777 | ||
778 | /* urb submitted for already existing endpoint */ | |
779 | if (ep->branch < PERIODIC_SIZE) | |
780 | break; | |
781 | ||
d5ce1379 | 782 | ep->branch = ret = balance(isp116x, ep->period, ep->load); |
4808a1c0 OK |
783 | if (ret < 0) |
784 | goto fail; | |
785 | ret = 0; | |
786 | ||
787 | urb->start_frame = (isp116x->fmindex & (PERIODIC_SIZE - 1)) | |
788 | + ep->branch; | |
789 | ||
790 | /* sort each schedule branch by period (slow before fast) | |
791 | to share the faster parts of the tree without needing | |
792 | dummy/placeholder nodes */ | |
793 | DBG("schedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); | |
794 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { | |
795 | struct isp116x_ep **prev = &isp116x->periodic[i]; | |
796 | struct isp116x_ep *here = *prev; | |
797 | ||
798 | while (here && ep != here) { | |
799 | if (ep->period > here->period) | |
800 | break; | |
801 | prev = &here->next; | |
802 | here = *prev; | |
803 | } | |
804 | if (ep != here) { | |
805 | ep->next = here; | |
806 | *prev = ep; | |
807 | } | |
808 | isp116x->load[i] += ep->load; | |
809 | } | |
810 | hcd->self.bandwidth_allocated += ep->load / ep->period; | |
811 | ||
812 | /* switch over to SOFint */ | |
813 | if (!isp116x->periodic_count++) { | |
814 | isp116x->irqenb &= ~HCuPINT_ATL; | |
815 | isp116x->irqenb |= HCuPINT_SOF; | |
816 | isp116x_write_reg16(isp116x, HCuPINTENB, | |
817 | isp116x->irqenb); | |
818 | } | |
819 | } | |
820 | ||
4808a1c0 | 821 | urb->hcpriv = hep; |
4808a1c0 OK |
822 | start_atl_transfers(isp116x); |
823 | ||
824 | fail: | |
e9df41c5 AS |
825 | if (ret) |
826 | usb_hcd_unlink_urb_from_ep(hcd, urb); | |
827 | fail_not_linked: | |
4808a1c0 OK |
828 | spin_unlock_irqrestore(&isp116x->lock, flags); |
829 | return ret; | |
830 | } | |
831 | ||
832 | /* | |
833 | Dequeue URBs. | |
834 | */ | |
e9df41c5 AS |
835 | static int isp116x_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, |
836 | int status) | |
4808a1c0 OK |
837 | { |
838 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
839 | struct usb_host_endpoint *hep; | |
840 | struct isp116x_ep *ep, *ep_act; | |
841 | unsigned long flags; | |
e9df41c5 | 842 | int rc; |
4808a1c0 OK |
843 | |
844 | spin_lock_irqsave(&isp116x->lock, flags); | |
e9df41c5 AS |
845 | rc = usb_hcd_check_unlink_urb(hcd, urb, status); |
846 | if (rc) | |
847 | goto done; | |
848 | ||
4808a1c0 | 849 | hep = urb->hcpriv; |
4808a1c0 OK |
850 | ep = hep->hcpriv; |
851 | WARN_ON(hep != ep->hep); | |
852 | ||
853 | /* In front of queue? */ | |
854 | if (ep->hep->urb_list.next == &urb->urb_list) | |
855 | /* active? */ | |
856 | for (ep_act = isp116x->atl_active; ep_act; | |
857 | ep_act = ep_act->active) | |
858 | if (ep_act == ep) { | |
859 | VDBG("dequeue, urb %p active; wait for irq\n", | |
860 | urb); | |
861 | urb = NULL; | |
862 | break; | |
863 | } | |
864 | ||
865 | if (urb) | |
4a00027d | 866 | finish_request(isp116x, ep, urb, status); |
e9df41c5 | 867 | done: |
4808a1c0 | 868 | spin_unlock_irqrestore(&isp116x->lock, flags); |
e9df41c5 | 869 | return rc; |
4808a1c0 OK |
870 | } |
871 | ||
872 | static void isp116x_endpoint_disable(struct usb_hcd *hcd, | |
873 | struct usb_host_endpoint *hep) | |
874 | { | |
875 | int i; | |
959eea21 | 876 | struct isp116x_ep *ep = hep->hcpriv; |
4808a1c0 OK |
877 | |
878 | if (!ep) | |
879 | return; | |
880 | ||
881 | /* assume we'd just wait for the irq */ | |
882 | for (i = 0; i < 100 && !list_empty(&hep->urb_list); i++) | |
883 | msleep(3); | |
884 | if (!list_empty(&hep->urb_list)) | |
b6c63937 | 885 | WARNING("ep %p not empty?\n", ep); |
4808a1c0 | 886 | |
4808a1c0 OK |
887 | kfree(ep); |
888 | hep->hcpriv = NULL; | |
889 | } | |
890 | ||
891 | static int isp116x_get_frame(struct usb_hcd *hcd) | |
892 | { | |
893 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
894 | u32 fmnum; | |
895 | unsigned long flags; | |
896 | ||
897 | spin_lock_irqsave(&isp116x->lock, flags); | |
898 | fmnum = isp116x_read_reg32(isp116x, HCFMNUM); | |
899 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
900 | return (int)fmnum; | |
901 | } | |
902 | ||
4808a1c0 OK |
903 | /* |
904 | Adapted from ohci-hub.c. Currently we don't support autosuspend. | |
905 | */ | |
906 | static int isp116x_hub_status_data(struct usb_hcd *hcd, char *buf) | |
907 | { | |
908 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
909 | int ports, i, changed = 0; | |
9a57116b | 910 | unsigned long flags; |
4808a1c0 OK |
911 | |
912 | if (!HC_IS_RUNNING(hcd->state)) | |
913 | return -ESHUTDOWN; | |
914 | ||
9a57116b OK |
915 | /* Report no status change now, if we are scheduled to be |
916 | called later */ | |
917 | if (timer_pending(&hcd->rh_timer)) | |
918 | return 0; | |
4808a1c0 | 919 | |
9a57116b OK |
920 | ports = isp116x->rhdesca & RH_A_NDP; |
921 | spin_lock_irqsave(&isp116x->lock, flags); | |
922 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); | |
4808a1c0 OK |
923 | if (isp116x->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) |
924 | buf[0] = changed = 1; | |
925 | else | |
926 | buf[0] = 0; | |
927 | ||
928 | for (i = 0; i < ports; i++) { | |
0ed930bf | 929 | u32 status = isp116x_read_reg32(isp116x, i ? HCRHPORT2 : HCRHPORT1); |
4808a1c0 OK |
930 | |
931 | if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | |
932 | | RH_PS_OCIC | RH_PS_PRSC)) { | |
933 | changed = 1; | |
934 | buf[0] |= 1 << (i + 1); | |
4808a1c0 OK |
935 | } |
936 | } | |
9a57116b | 937 | spin_unlock_irqrestore(&isp116x->lock, flags); |
4808a1c0 OK |
938 | return changed; |
939 | } | |
940 | ||
941 | static void isp116x_hub_descriptor(struct isp116x *isp116x, | |
942 | struct usb_hub_descriptor *desc) | |
943 | { | |
944 | u32 reg = isp116x->rhdesca; | |
945 | ||
946 | desc->bDescriptorType = 0x29; | |
947 | desc->bDescLength = 9; | |
948 | desc->bHubContrCurrent = 0; | |
949 | desc->bNbrPorts = (u8) (reg & 0x3); | |
950 | /* Power switching, device type, overcurrent. */ | |
f3c4140d SS |
951 | desc->wHubCharacteristics = cpu_to_le16((u16) ((reg >> 8) & |
952 | (HUB_CHAR_LPSM | | |
953 | HUB_CHAR_COMPOUND | | |
954 | HUB_CHAR_OCPM))); | |
4808a1c0 | 955 | desc->bPwrOn2PwrGood = (u8) ((reg >> 24) & 0xff); |
da13051c | 956 | /* ports removable, and legacy PortPwrCtrlMask */ |
dbe79bbe JY |
957 | desc->u.hs.DeviceRemovable[0] = 0; |
958 | desc->u.hs.DeviceRemovable[1] = ~0; | |
4808a1c0 OK |
959 | } |
960 | ||
961 | /* Perform reset of a given port. | |
962 | It would be great to just start the reset and let the | |
963 | USB core to clear the reset in due time. However, | |
964 | root hub ports should be reset for at least 50 ms, while | |
965 | our chip stays in reset for about 10 ms. I.e., we must | |
966 | repeatedly reset it ourself here. | |
967 | */ | |
968 | static inline void root_port_reset(struct isp116x *isp116x, unsigned port) | |
969 | { | |
970 | u32 tmp; | |
971 | unsigned long flags, t; | |
972 | ||
973 | /* Root hub reset should be 50 ms, but some devices | |
974 | want it even longer. */ | |
975 | t = jiffies + msecs_to_jiffies(100); | |
976 | ||
977 | while (time_before(jiffies, t)) { | |
978 | spin_lock_irqsave(&isp116x->lock, flags); | |
979 | /* spin until any current reset finishes */ | |
980 | for (;;) { | |
981 | tmp = isp116x_read_reg32(isp116x, port ? | |
982 | HCRHPORT2 : HCRHPORT1); | |
983 | if (!(tmp & RH_PS_PRS)) | |
984 | break; | |
985 | udelay(500); | |
986 | } | |
987 | /* Don't reset a disconnected port */ | |
988 | if (!(tmp & RH_PS_CCS)) { | |
989 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
990 | break; | |
991 | } | |
992 | /* Reset lasts 10ms (claims datasheet) */ | |
993 | isp116x_write_reg32(isp116x, port ? HCRHPORT2 : | |
994 | HCRHPORT1, (RH_PS_PRS)); | |
995 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
996 | msleep(10); | |
997 | } | |
998 | } | |
999 | ||
1000 | /* Adapted from ohci-hub.c */ | |
1001 | static int isp116x_hub_control(struct usb_hcd *hcd, | |
1002 | u16 typeReq, | |
1003 | u16 wValue, u16 wIndex, char *buf, u16 wLength) | |
1004 | { | |
1005 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1006 | int ret = 0; | |
1007 | unsigned long flags; | |
1008 | int ports = isp116x->rhdesca & RH_A_NDP; | |
1009 | u32 tmp = 0; | |
1010 | ||
1011 | switch (typeReq) { | |
1012 | case ClearHubFeature: | |
1013 | DBG("ClearHubFeature: "); | |
1014 | switch (wValue) { | |
1015 | case C_HUB_OVER_CURRENT: | |
1016 | DBG("C_HUB_OVER_CURRENT\n"); | |
1017 | spin_lock_irqsave(&isp116x->lock, flags); | |
1018 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_OCIC); | |
1019 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1020 | case C_HUB_LOCAL_POWER: | |
1021 | DBG("C_HUB_LOCAL_POWER\n"); | |
1022 | break; | |
1023 | default: | |
1024 | goto error; | |
1025 | } | |
1026 | break; | |
1027 | case SetHubFeature: | |
1028 | DBG("SetHubFeature: "); | |
1029 | switch (wValue) { | |
1030 | case C_HUB_OVER_CURRENT: | |
1031 | case C_HUB_LOCAL_POWER: | |
1032 | DBG("C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); | |
1033 | break; | |
1034 | default: | |
1035 | goto error; | |
1036 | } | |
1037 | break; | |
1038 | case GetHubDescriptor: | |
1039 | DBG("GetHubDescriptor\n"); | |
1040 | isp116x_hub_descriptor(isp116x, | |
1041 | (struct usb_hub_descriptor *)buf); | |
1042 | break; | |
1043 | case GetHubStatus: | |
1044 | DBG("GetHubStatus\n"); | |
17f8bb73 | 1045 | *(__le32 *) buf = 0; |
4808a1c0 OK |
1046 | break; |
1047 | case GetPortStatus: | |
1048 | DBG("GetPortStatus\n"); | |
1049 | if (!wIndex || wIndex > ports) | |
1050 | goto error; | |
0ed930bf AS |
1051 | spin_lock_irqsave(&isp116x->lock, flags); |
1052 | tmp = isp116x_read_reg32(isp116x, (--wIndex) ? HCRHPORT2 : HCRHPORT1); | |
1053 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
4808a1c0 OK |
1054 | *(__le32 *) buf = cpu_to_le32(tmp); |
1055 | DBG("GetPortStatus: port[%d] %08x\n", wIndex + 1, tmp); | |
1056 | break; | |
1057 | case ClearPortFeature: | |
1058 | DBG("ClearPortFeature: "); | |
1059 | if (!wIndex || wIndex > ports) | |
1060 | goto error; | |
1061 | wIndex--; | |
1062 | ||
1063 | switch (wValue) { | |
1064 | case USB_PORT_FEAT_ENABLE: | |
1065 | DBG("USB_PORT_FEAT_ENABLE\n"); | |
1066 | tmp = RH_PS_CCS; | |
1067 | break; | |
1068 | case USB_PORT_FEAT_C_ENABLE: | |
1069 | DBG("USB_PORT_FEAT_C_ENABLE\n"); | |
1070 | tmp = RH_PS_PESC; | |
1071 | break; | |
1072 | case USB_PORT_FEAT_SUSPEND: | |
1073 | DBG("USB_PORT_FEAT_SUSPEND\n"); | |
1074 | tmp = RH_PS_POCI; | |
1075 | break; | |
1076 | case USB_PORT_FEAT_C_SUSPEND: | |
1077 | DBG("USB_PORT_FEAT_C_SUSPEND\n"); | |
1078 | tmp = RH_PS_PSSC; | |
1079 | break; | |
1080 | case USB_PORT_FEAT_POWER: | |
1081 | DBG("USB_PORT_FEAT_POWER\n"); | |
1082 | tmp = RH_PS_LSDA; | |
1083 | break; | |
1084 | case USB_PORT_FEAT_C_CONNECTION: | |
1085 | DBG("USB_PORT_FEAT_C_CONNECTION\n"); | |
1086 | tmp = RH_PS_CSC; | |
1087 | break; | |
1088 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
1089 | DBG("USB_PORT_FEAT_C_OVER_CURRENT\n"); | |
1090 | tmp = RH_PS_OCIC; | |
1091 | break; | |
1092 | case USB_PORT_FEAT_C_RESET: | |
1093 | DBG("USB_PORT_FEAT_C_RESET\n"); | |
1094 | tmp = RH_PS_PRSC; | |
1095 | break; | |
1096 | default: | |
1097 | goto error; | |
1098 | } | |
1099 | spin_lock_irqsave(&isp116x->lock, flags); | |
1100 | isp116x_write_reg32(isp116x, wIndex | |
1101 | ? HCRHPORT2 : HCRHPORT1, tmp); | |
4808a1c0 OK |
1102 | spin_unlock_irqrestore(&isp116x->lock, flags); |
1103 | break; | |
1104 | case SetPortFeature: | |
1105 | DBG("SetPortFeature: "); | |
1106 | if (!wIndex || wIndex > ports) | |
1107 | goto error; | |
1108 | wIndex--; | |
1109 | switch (wValue) { | |
1110 | case USB_PORT_FEAT_SUSPEND: | |
1111 | DBG("USB_PORT_FEAT_SUSPEND\n"); | |
1112 | spin_lock_irqsave(&isp116x->lock, flags); | |
1113 | isp116x_write_reg32(isp116x, wIndex | |
1114 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PSS); | |
0ed930bf | 1115 | spin_unlock_irqrestore(&isp116x->lock, flags); |
4808a1c0 OK |
1116 | break; |
1117 | case USB_PORT_FEAT_POWER: | |
1118 | DBG("USB_PORT_FEAT_POWER\n"); | |
1119 | spin_lock_irqsave(&isp116x->lock, flags); | |
1120 | isp116x_write_reg32(isp116x, wIndex | |
1121 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PPS); | |
0ed930bf | 1122 | spin_unlock_irqrestore(&isp116x->lock, flags); |
4808a1c0 OK |
1123 | break; |
1124 | case USB_PORT_FEAT_RESET: | |
1125 | DBG("USB_PORT_FEAT_RESET\n"); | |
1126 | root_port_reset(isp116x, wIndex); | |
4808a1c0 OK |
1127 | break; |
1128 | default: | |
1129 | goto error; | |
1130 | } | |
4808a1c0 OK |
1131 | break; |
1132 | ||
1133 | default: | |
1134 | error: | |
1135 | /* "protocol stall" on error */ | |
1136 | DBG("PROTOCOL STALL\n"); | |
1137 | ret = -EPIPE; | |
1138 | } | |
1139 | return ret; | |
1140 | } | |
1141 | ||
4808a1c0 OK |
1142 | /*-----------------------------------------------------------------*/ |
1143 | ||
959eea21 | 1144 | #ifdef CONFIG_DEBUG_FS |
4808a1c0 OK |
1145 | |
1146 | static void dump_irq(struct seq_file *s, char *label, u16 mask) | |
1147 | { | |
1148 | seq_printf(s, "%s %04x%s%s%s%s%s%s\n", label, mask, | |
1149 | mask & HCuPINT_CLKRDY ? " clkrdy" : "", | |
1150 | mask & HCuPINT_SUSP ? " susp" : "", | |
1151 | mask & HCuPINT_OPR ? " opr" : "", | |
1152 | mask & HCuPINT_AIIEOT ? " eot" : "", | |
1153 | mask & HCuPINT_ATL ? " atl" : "", | |
1154 | mask & HCuPINT_SOF ? " sof" : ""); | |
1155 | } | |
1156 | ||
1157 | static void dump_int(struct seq_file *s, char *label, u32 mask) | |
1158 | { | |
1159 | seq_printf(s, "%s %08x%s%s%s%s%s%s%s\n", label, mask, | |
1160 | mask & HCINT_MIE ? " MIE" : "", | |
1161 | mask & HCINT_RHSC ? " rhsc" : "", | |
1162 | mask & HCINT_FNO ? " fno" : "", | |
1163 | mask & HCINT_UE ? " ue" : "", | |
1164 | mask & HCINT_RD ? " rd" : "", | |
1165 | mask & HCINT_SF ? " sof" : "", mask & HCINT_SO ? " so" : ""); | |
1166 | } | |
1167 | ||
959eea21 | 1168 | static int isp116x_show_dbg(struct seq_file *s, void *unused) |
4808a1c0 OK |
1169 | { |
1170 | struct isp116x *isp116x = s->private; | |
4808a1c0 OK |
1171 | |
1172 | seq_printf(s, "%s\n%s version %s\n", | |
1173 | isp116x_to_hcd(isp116x)->product_desc, hcd_name, | |
1174 | DRIVER_VERSION); | |
1175 | ||
1176 | if (HC_IS_SUSPENDED(isp116x_to_hcd(isp116x)->state)) { | |
1177 | seq_printf(s, "HCD is suspended\n"); | |
1178 | return 0; | |
1179 | } | |
1180 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) { | |
1181 | seq_printf(s, "HCD not running\n"); | |
1182 | return 0; | |
1183 | } | |
1184 | ||
1185 | spin_lock_irq(&isp116x->lock); | |
4808a1c0 OK |
1186 | dump_irq(s, "hc_irq_enable", isp116x_read_reg16(isp116x, HCuPINTENB)); |
1187 | dump_irq(s, "hc_irq_status", isp116x_read_reg16(isp116x, HCuPINT)); | |
1188 | dump_int(s, "hc_int_enable", isp116x_read_reg32(isp116x, HCINTENB)); | |
1189 | dump_int(s, "hc_int_status", isp116x_read_reg32(isp116x, HCINTSTAT)); | |
959eea21 | 1190 | isp116x_show_regs_seq(isp116x, s); |
4808a1c0 OK |
1191 | spin_unlock_irq(&isp116x->lock); |
1192 | seq_printf(s, "\n"); | |
1193 | ||
1194 | return 0; | |
1195 | } | |
1196 | ||
959eea21 | 1197 | static int isp116x_open_seq(struct inode *inode, struct file *file) |
4808a1c0 | 1198 | { |
8e18e294 | 1199 | return single_open(file, isp116x_show_dbg, inode->i_private); |
4808a1c0 OK |
1200 | } |
1201 | ||
066202dd | 1202 | static const struct file_operations isp116x_debug_fops = { |
959eea21 | 1203 | .open = isp116x_open_seq, |
4808a1c0 OK |
1204 | .read = seq_read, |
1205 | .llseek = seq_lseek, | |
1206 | .release = single_release, | |
1207 | }; | |
1208 | ||
959eea21 | 1209 | static int create_debug_file(struct isp116x *isp116x) |
4808a1c0 | 1210 | { |
959eea21 OK |
1211 | isp116x->dentry = debugfs_create_file(hcd_name, |
1212 | S_IRUGO, NULL, isp116x, | |
1213 | &isp116x_debug_fops); | |
1214 | if (!isp116x->dentry) | |
1215 | return -ENOMEM; | |
1216 | return 0; | |
4808a1c0 OK |
1217 | } |
1218 | ||
1219 | static void remove_debug_file(struct isp116x *isp116x) | |
1220 | { | |
959eea21 | 1221 | debugfs_remove(isp116x->dentry); |
4808a1c0 OK |
1222 | } |
1223 | ||
959eea21 OK |
1224 | #else |
1225 | ||
1226 | #define create_debug_file(d) 0 | |
1227 | #define remove_debug_file(d) do{}while(0) | |
1228 | ||
1229 | #endif /* CONFIG_DEBUG_FS */ | |
4808a1c0 OK |
1230 | |
1231 | /*-----------------------------------------------------------------*/ | |
1232 | ||
1233 | /* | |
1234 | Software reset - can be called from any contect. | |
1235 | */ | |
1236 | static int isp116x_sw_reset(struct isp116x *isp116x) | |
1237 | { | |
1238 | int retries = 15; | |
1239 | unsigned long flags; | |
1240 | int ret = 0; | |
1241 | ||
1242 | spin_lock_irqsave(&isp116x->lock, flags); | |
1243 | isp116x_write_reg16(isp116x, HCSWRES, HCSWRES_MAGIC); | |
1244 | isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR); | |
1245 | while (--retries) { | |
1246 | /* It usually resets within 1 ms */ | |
1247 | mdelay(1); | |
1248 | if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR)) | |
1249 | break; | |
1250 | } | |
1251 | if (!retries) { | |
1252 | ERR("Software reset timeout\n"); | |
1253 | ret = -ETIME; | |
1254 | } | |
1255 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1256 | return ret; | |
1257 | } | |
1258 | ||
4808a1c0 OK |
1259 | static int isp116x_reset(struct usb_hcd *hcd) |
1260 | { | |
1261 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1262 | unsigned long t; | |
1263 | u16 clkrdy = 0; | |
959eea21 | 1264 | int ret, timeout = 15 /* ms */ ; |
4808a1c0 | 1265 | |
f8d23d30 | 1266 | ret = isp116x_sw_reset(isp116x); |
4808a1c0 OK |
1267 | if (ret) |
1268 | return ret; | |
1269 | ||
1270 | t = jiffies + msecs_to_jiffies(timeout); | |
1271 | while (time_before_eq(jiffies, t)) { | |
1272 | msleep(4); | |
1273 | spin_lock_irq(&isp116x->lock); | |
1274 | clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY; | |
1275 | spin_unlock_irq(&isp116x->lock); | |
1276 | if (clkrdy) | |
1277 | break; | |
1278 | } | |
1279 | if (!clkrdy) { | |
959eea21 | 1280 | ERR("Clock not ready after %dms\n", timeout); |
589a0083 OK |
1281 | /* After sw_reset the clock won't report to be ready, if |
1282 | H_WAKEUP pin is high. */ | |
f8d23d30 | 1283 | ERR("Please make sure that the H_WAKEUP pin is pulled low!\n"); |
4808a1c0 OK |
1284 | ret = -ENODEV; |
1285 | } | |
1286 | return ret; | |
1287 | } | |
1288 | ||
1289 | static void isp116x_stop(struct usb_hcd *hcd) | |
1290 | { | |
1291 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1292 | unsigned long flags; | |
1293 | u32 val; | |
1294 | ||
1295 | spin_lock_irqsave(&isp116x->lock, flags); | |
1296 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
1297 | ||
1298 | /* Switch off ports' power, some devices don't come up | |
1299 | after next 'insmod' without this */ | |
1300 | val = isp116x_read_reg32(isp116x, HCRHDESCA); | |
1301 | val &= ~(RH_A_NPS | RH_A_PSM); | |
1302 | isp116x_write_reg32(isp116x, HCRHDESCA, val); | |
1303 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS); | |
1304 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1305 | ||
f8d23d30 | 1306 | isp116x_sw_reset(isp116x); |
4808a1c0 OK |
1307 | } |
1308 | ||
1309 | /* | |
1310 | Configure the chip. The chip must be successfully reset by now. | |
1311 | */ | |
1312 | static int isp116x_start(struct usb_hcd *hcd) | |
1313 | { | |
1314 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1315 | struct isp116x_platform_data *board = isp116x->board; | |
4808a1c0 OK |
1316 | u32 val; |
1317 | unsigned long flags; | |
1318 | ||
1319 | spin_lock_irqsave(&isp116x->lock, flags); | |
1320 | ||
1321 | /* clear interrupt status and disable all interrupt sources */ | |
1322 | isp116x_write_reg16(isp116x, HCuPINT, 0xff); | |
1323 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
1324 | ||
1325 | val = isp116x_read_reg16(isp116x, HCCHIPID); | |
1326 | if ((val & HCCHIPID_MASK) != HCCHIPID_MAGIC) { | |
1327 | ERR("Invalid chip ID %04x\n", val); | |
1328 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1329 | return -ENODEV; | |
1330 | } | |
1331 | ||
9a57116b OK |
1332 | /* To be removed in future */ |
1333 | hcd->uses_new_polling = 1; | |
1334 | ||
4808a1c0 OK |
1335 | isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE); |
1336 | isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE); | |
1337 | ||
1338 | /* ----- HW conf */ | |
1339 | val = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); | |
1340 | if (board->sel15Kres) | |
1341 | val |= HCHWCFG_15KRSEL; | |
1342 | /* Remote wakeup won't work without working clock */ | |
d4d62861 | 1343 | if (board->remote_wakeup_enable) |
4808a1c0 OK |
1344 | val |= HCHWCFG_CLKNOTSTOP; |
1345 | if (board->oc_enable) | |
1346 | val |= HCHWCFG_ANALOG_OC; | |
1347 | if (board->int_act_high) | |
1348 | val |= HCHWCFG_INT_POL; | |
1349 | if (board->int_edge_triggered) | |
1350 | val |= HCHWCFG_INT_TRIGGER; | |
1351 | isp116x_write_reg16(isp116x, HCHWCFG, val); | |
1352 | ||
1353 | /* ----- Root hub conf */ | |
dc5bed09 | 1354 | val = (25 << 24) & RH_A_POTPGT; |
165c0f39 OK |
1355 | /* AN10003_1.pdf recommends RH_A_NPS (no power switching) to |
1356 | be always set. Yet, instead, we request individual port | |
1357 | power switching. */ | |
1358 | val |= RH_A_PSM; | |
9d233d9f OK |
1359 | /* Report overcurrent per port */ |
1360 | val |= RH_A_OCPM; | |
4808a1c0 OK |
1361 | isp116x_write_reg32(isp116x, HCRHDESCA, val); |
1362 | isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA); | |
1363 | ||
1364 | val = RH_B_PPCM; | |
1365 | isp116x_write_reg32(isp116x, HCRHDESCB, val); | |
1366 | isp116x->rhdescb = isp116x_read_reg32(isp116x, HCRHDESCB); | |
1367 | ||
1368 | val = 0; | |
1369 | if (board->remote_wakeup_enable) { | |
704aa0b7 DB |
1370 | if (!device_can_wakeup(hcd->self.controller)) |
1371 | device_init_wakeup(hcd->self.controller, 1); | |
4808a1c0 OK |
1372 | val |= RH_HS_DRWE; |
1373 | } | |
1374 | isp116x_write_reg32(isp116x, HCRHSTATUS, val); | |
1375 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); | |
1376 | ||
1377 | isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf); | |
4808a1c0 | 1378 | |
4808a1c0 OK |
1379 | hcd->state = HC_STATE_RUNNING; |
1380 | ||
4808a1c0 OK |
1381 | /* Set up interrupts */ |
1382 | isp116x->intenb = HCINT_MIE | HCINT_RHSC | HCINT_UE; | |
1383 | if (board->remote_wakeup_enable) | |
1384 | isp116x->intenb |= HCINT_RD; | |
1385 | isp116x->irqenb = HCuPINT_ATL | HCuPINT_OPR; /* | HCuPINT_SUSP; */ | |
1386 | isp116x_write_reg32(isp116x, HCINTENB, isp116x->intenb); | |
1387 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); | |
1388 | ||
1389 | /* Go operational */ | |
1390 | val = HCCONTROL_USB_OPER; | |
4808a1c0 OK |
1391 | if (board->remote_wakeup_enable) |
1392 | val |= HCCONTROL_RWE; | |
1393 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1394 | ||
1395 | /* Disable ports to avoid race in device enumeration */ | |
1396 | isp116x_write_reg32(isp116x, HCRHPORT1, RH_PS_CCS); | |
1397 | isp116x_write_reg32(isp116x, HCRHPORT2, RH_PS_CCS); | |
1398 | ||
959eea21 | 1399 | isp116x_show_regs_log(isp116x); |
4808a1c0 OK |
1400 | spin_unlock_irqrestore(&isp116x->lock, flags); |
1401 | return 0; | |
1402 | } | |
1403 | ||
959eea21 OK |
1404 | #ifdef CONFIG_PM |
1405 | ||
1406 | static int isp116x_bus_suspend(struct usb_hcd *hcd) | |
1407 | { | |
1408 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1409 | unsigned long flags; | |
1410 | u32 val; | |
1411 | int ret = 0; | |
1412 | ||
1413 | spin_lock_irqsave(&isp116x->lock, flags); | |
959eea21 | 1414 | val = isp116x_read_reg32(isp116x, HCCONTROL); |
0be930c5 | 1415 | |
959eea21 OK |
1416 | switch (val & HCCONTROL_HCFS) { |
1417 | case HCCONTROL_USB_OPER: | |
0be930c5 | 1418 | spin_unlock_irqrestore(&isp116x->lock, flags); |
959eea21 OK |
1419 | val &= (~HCCONTROL_HCFS & ~HCCONTROL_RWE); |
1420 | val |= HCCONTROL_USB_SUSPEND; | |
58a97ffe | 1421 | if (hcd->self.root_hub->do_remote_wakeup) |
959eea21 OK |
1422 | val |= HCCONTROL_RWE; |
1423 | /* Wait for usb transfers to finish */ | |
0be930c5 OK |
1424 | msleep(2); |
1425 | spin_lock_irqsave(&isp116x->lock, flags); | |
959eea21 | 1426 | isp116x_write_reg32(isp116x, HCCONTROL, val); |
0be930c5 | 1427 | spin_unlock_irqrestore(&isp116x->lock, flags); |
959eea21 | 1428 | /* Wait for devices to suspend */ |
0be930c5 | 1429 | msleep(5); |
959eea21 OK |
1430 | break; |
1431 | case HCCONTROL_USB_RESUME: | |
1432 | isp116x_write_reg32(isp116x, HCCONTROL, | |
1433 | (val & ~HCCONTROL_HCFS) | | |
1434 | HCCONTROL_USB_RESET); | |
1435 | case HCCONTROL_USB_RESET: | |
1436 | ret = -EBUSY; | |
0be930c5 OK |
1437 | default: /* HCCONTROL_USB_SUSPEND */ |
1438 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
959eea21 | 1439 | break; |
959eea21 OK |
1440 | } |
1441 | ||
959eea21 OK |
1442 | return ret; |
1443 | } | |
1444 | ||
1445 | static int isp116x_bus_resume(struct usb_hcd *hcd) | |
1446 | { | |
1447 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1448 | u32 val; | |
1449 | ||
1450 | msleep(5); | |
1451 | spin_lock_irq(&isp116x->lock); | |
1452 | ||
1453 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1454 | switch (val & HCCONTROL_HCFS) { | |
1455 | case HCCONTROL_USB_SUSPEND: | |
1456 | val &= ~HCCONTROL_HCFS; | |
1457 | val |= HCCONTROL_USB_RESUME; | |
1458 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1459 | case HCCONTROL_USB_RESUME: | |
1460 | break; | |
1461 | case HCCONTROL_USB_OPER: | |
1462 | spin_unlock_irq(&isp116x->lock); | |
959eea21 OK |
1463 | return 0; |
1464 | default: | |
1465 | /* HCCONTROL_USB_RESET: this may happen, when during | |
1466 | suspension the HC lost power. Reinitialize completely */ | |
1467 | spin_unlock_irq(&isp116x->lock); | |
1468 | DBG("Chip has been reset while suspended. Reinit from scratch.\n"); | |
1469 | isp116x_reset(hcd); | |
1470 | isp116x_start(hcd); | |
1471 | isp116x_hub_control(hcd, SetPortFeature, | |
1472 | USB_PORT_FEAT_POWER, 1, NULL, 0); | |
1473 | if ((isp116x->rhdesca & RH_A_NDP) == 2) | |
1474 | isp116x_hub_control(hcd, SetPortFeature, | |
1475 | USB_PORT_FEAT_POWER, 2, NULL, 0); | |
959eea21 OK |
1476 | return 0; |
1477 | } | |
1478 | ||
1479 | val = isp116x->rhdesca & RH_A_NDP; | |
1480 | while (val--) { | |
1481 | u32 stat = | |
1482 | isp116x_read_reg32(isp116x, val ? HCRHPORT2 : HCRHPORT1); | |
1483 | /* force global, not selective, resume */ | |
1484 | if (!(stat & RH_PS_PSS)) | |
1485 | continue; | |
1486 | DBG("%s: Resuming port %d\n", __func__, val); | |
1487 | isp116x_write_reg32(isp116x, RH_PS_POCI, val | |
1488 | ? HCRHPORT2 : HCRHPORT1); | |
1489 | } | |
1490 | spin_unlock_irq(&isp116x->lock); | |
1491 | ||
1492 | hcd->state = HC_STATE_RESUMING; | |
1493 | msleep(20); | |
1494 | ||
1495 | /* Go operational */ | |
1496 | spin_lock_irq(&isp116x->lock); | |
1497 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1498 | isp116x_write_reg32(isp116x, HCCONTROL, | |
1499 | (val & ~HCCONTROL_HCFS) | HCCONTROL_USB_OPER); | |
1500 | spin_unlock_irq(&isp116x->lock); | |
959eea21 OK |
1501 | hcd->state = HC_STATE_RUNNING; |
1502 | ||
1503 | return 0; | |
1504 | } | |
1505 | ||
1506 | #else | |
1507 | ||
1508 | #define isp116x_bus_suspend NULL | |
1509 | #define isp116x_bus_resume NULL | |
1510 | ||
1511 | #endif | |
4808a1c0 OK |
1512 | |
1513 | static struct hc_driver isp116x_hc_driver = { | |
1514 | .description = hcd_name, | |
1515 | .product_desc = "ISP116x Host Controller", | |
1516 | .hcd_priv_size = sizeof(struct isp116x), | |
1517 | ||
1518 | .irq = isp116x_irq, | |
1519 | .flags = HCD_USB11, | |
1520 | ||
1521 | .reset = isp116x_reset, | |
1522 | .start = isp116x_start, | |
1523 | .stop = isp116x_stop, | |
1524 | ||
1525 | .urb_enqueue = isp116x_urb_enqueue, | |
1526 | .urb_dequeue = isp116x_urb_dequeue, | |
1527 | .endpoint_disable = isp116x_endpoint_disable, | |
1528 | ||
1529 | .get_frame_number = isp116x_get_frame, | |
1530 | ||
1531 | .hub_status_data = isp116x_hub_status_data, | |
1532 | .hub_control = isp116x_hub_control, | |
0c0382e3 AS |
1533 | .bus_suspend = isp116x_bus_suspend, |
1534 | .bus_resume = isp116x_bus_resume, | |
4808a1c0 OK |
1535 | }; |
1536 | ||
1537 | /*----------------------------------------------------------------*/ | |
1538 | ||
b712548c | 1539 | static int isp116x_remove(struct platform_device *pdev) |
4808a1c0 | 1540 | { |
3ae5eaec | 1541 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
589a0083 | 1542 | struct isp116x *isp116x; |
4808a1c0 OK |
1543 | struct resource *res; |
1544 | ||
9a57116b | 1545 | if (!hcd) |
589a0083 OK |
1546 | return 0; |
1547 | isp116x = hcd_to_isp116x(hcd); | |
4808a1c0 OK |
1548 | remove_debug_file(isp116x); |
1549 | usb_remove_hcd(hcd); | |
1550 | ||
1551 | iounmap(isp116x->data_reg); | |
1552 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1553 | release_mem_region(res->start, 2); | |
1554 | iounmap(isp116x->addr_reg); | |
1555 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1556 | release_mem_region(res->start, 2); | |
1557 | ||
1558 | usb_put_hcd(hcd); | |
1559 | return 0; | |
1560 | } | |
1561 | ||
41ac7b3a | 1562 | static int isp116x_probe(struct platform_device *pdev) |
4808a1c0 OK |
1563 | { |
1564 | struct usb_hcd *hcd; | |
1565 | struct isp116x *isp116x; | |
27140219 | 1566 | struct resource *addr, *data, *ires; |
4808a1c0 OK |
1567 | void __iomem *addr_reg; |
1568 | void __iomem *data_reg; | |
1569 | int irq; | |
1570 | int ret = 0; | |
27140219 | 1571 | unsigned long irqflags; |
4808a1c0 | 1572 | |
2e8d3fe4 TK |
1573 | if (usb_disabled()) |
1574 | return -ENODEV; | |
1575 | ||
4808a1c0 OK |
1576 | if (pdev->num_resources < 3) { |
1577 | ret = -ENODEV; | |
1578 | goto err1; | |
1579 | } | |
1580 | ||
1581 | data = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1582 | addr = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
27140219 MZ |
1583 | ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
1584 | ||
1585 | if (!addr || !data || !ires) { | |
4808a1c0 OK |
1586 | ret = -ENODEV; |
1587 | goto err1; | |
1588 | } | |
1589 | ||
27140219 MZ |
1590 | irq = ires->start; |
1591 | irqflags = ires->flags & IRQF_TRIGGER_MASK; | |
1592 | ||
3ae5eaec | 1593 | if (pdev->dev.dma_mask) { |
4808a1c0 OK |
1594 | DBG("DMA not supported\n"); |
1595 | ret = -EINVAL; | |
1596 | goto err1; | |
1597 | } | |
1598 | ||
1599 | if (!request_mem_region(addr->start, 2, hcd_name)) { | |
1600 | ret = -EBUSY; | |
1601 | goto err1; | |
1602 | } | |
7a9d93e5 | 1603 | addr_reg = ioremap(addr->start, resource_size(addr)); |
4808a1c0 OK |
1604 | if (addr_reg == NULL) { |
1605 | ret = -ENOMEM; | |
1606 | goto err2; | |
1607 | } | |
1608 | if (!request_mem_region(data->start, 2, hcd_name)) { | |
1609 | ret = -EBUSY; | |
1610 | goto err3; | |
1611 | } | |
7a9d93e5 | 1612 | data_reg = ioremap(data->start, resource_size(data)); |
4808a1c0 OK |
1613 | if (data_reg == NULL) { |
1614 | ret = -ENOMEM; | |
1615 | goto err4; | |
1616 | } | |
1617 | ||
1618 | /* allocate and initialize hcd */ | |
7071a3ce | 1619 | hcd = usb_create_hcd(&isp116x_hc_driver, &pdev->dev, dev_name(&pdev->dev)); |
4808a1c0 OK |
1620 | if (!hcd) { |
1621 | ret = -ENOMEM; | |
1622 | goto err5; | |
1623 | } | |
1624 | /* this rsrc_start is bogus */ | |
1625 | hcd->rsrc_start = addr->start; | |
1626 | isp116x = hcd_to_isp116x(hcd); | |
1627 | isp116x->data_reg = data_reg; | |
1628 | isp116x->addr_reg = addr_reg; | |
1629 | spin_lock_init(&isp116x->lock); | |
1630 | INIT_LIST_HEAD(&isp116x->async); | |
d4f09e28 | 1631 | isp116x->board = dev_get_platdata(&pdev->dev); |
4808a1c0 OK |
1632 | |
1633 | if (!isp116x->board) { | |
1634 | ERR("Platform data structure not initialized\n"); | |
1635 | ret = -ENODEV; | |
1636 | goto err6; | |
1637 | } | |
1638 | if (isp116x_check_platform_delay(isp116x)) { | |
1639 | ERR("USE_PLATFORM_DELAY defined, but delay function not " | |
1640 | "implemented.\n"); | |
1641 | ERR("See comments in drivers/usb/host/isp116x-hcd.c\n"); | |
1642 | ret = -ENODEV; | |
1643 | goto err6; | |
1644 | } | |
1645 | ||
b5dd18d8 | 1646 | ret = usb_add_hcd(hcd, irq, irqflags); |
959eea21 | 1647 | if (ret) |
4808a1c0 OK |
1648 | goto err6; |
1649 | ||
3c9740a1 PC |
1650 | device_wakeup_enable(hcd->self.controller); |
1651 | ||
959eea21 OK |
1652 | ret = create_debug_file(isp116x); |
1653 | if (ret) { | |
1654 | ERR("Couldn't create debugfs entry\n"); | |
1655 | goto err7; | |
1656 | } | |
1657 | ||
4808a1c0 OK |
1658 | return 0; |
1659 | ||
959eea21 OK |
1660 | err7: |
1661 | usb_remove_hcd(hcd); | |
4808a1c0 OK |
1662 | err6: |
1663 | usb_put_hcd(hcd); | |
1664 | err5: | |
1665 | iounmap(data_reg); | |
1666 | err4: | |
1667 | release_mem_region(data->start, 2); | |
1668 | err3: | |
1669 | iounmap(addr_reg); | |
1670 | err2: | |
1671 | release_mem_region(addr->start, 2); | |
1672 | err1: | |
1673 | ERR("init error, %d\n", ret); | |
1674 | return ret; | |
1675 | } | |
1676 | ||
1677 | #ifdef CONFIG_PM | |
1678 | /* | |
1679 | Suspend of platform device | |
1680 | */ | |
3ae5eaec | 1681 | static int isp116x_suspend(struct platform_device *dev, pm_message_t state) |
4808a1c0 | 1682 | { |
959eea21 | 1683 | VDBG("%s: state %x\n", __func__, state.event); |
959eea21 | 1684 | return 0; |
4808a1c0 OK |
1685 | } |
1686 | ||
1687 | /* | |
1688 | Resume platform device | |
1689 | */ | |
3ae5eaec | 1690 | static int isp116x_resume(struct platform_device *dev) |
4808a1c0 | 1691 | { |
70a1c9e0 | 1692 | VDBG("%s\n", __func__); |
959eea21 | 1693 | return 0; |
4808a1c0 OK |
1694 | } |
1695 | ||
1696 | #else | |
1697 | ||
1698 | #define isp116x_suspend NULL | |
1699 | #define isp116x_resume NULL | |
1700 | ||
1701 | #endif | |
1702 | ||
f4fce61d KS |
1703 | /* work with hotplug and coldplug */ |
1704 | MODULE_ALIAS("platform:isp116x-hcd"); | |
1705 | ||
3ae5eaec | 1706 | static struct platform_driver isp116x_driver = { |
4808a1c0 OK |
1707 | .probe = isp116x_probe, |
1708 | .remove = isp116x_remove, | |
1709 | .suspend = isp116x_suspend, | |
1710 | .resume = isp116x_resume, | |
0be930c5 | 1711 | .driver = { |
a458677d | 1712 | .name = hcd_name, |
f4fce61d | 1713 | }, |
4808a1c0 OK |
1714 | }; |
1715 | ||
2e8d3fe4 | 1716 | module_platform_driver(isp116x_driver); |