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Commit | Line | Data |
---|---|---|
4808a1c0 OK |
1 | /* |
2 | * ISP116x HCD (Host Controller Driver) for USB. | |
3 | * | |
4 | * Derived from the SL811 HCD, rewritten for ISP116x. | |
5 | * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee> | |
6 | * | |
7 | * Portions: | |
8 | * Copyright (C) 2004 Psion Teklogix (for NetBook PRO) | |
9 | * Copyright (C) 2004 David Brownell | |
10 | * | |
11 | * Periodic scheduling is based on Roman's OHCI code | |
12 | * Copyright (C) 1999 Roman Weissgaerber | |
13 | * | |
14 | */ | |
15 | ||
16 | /* | |
17 | * The driver basically works. A number of people have used it with a range | |
18 | * of devices. | |
19 | * | |
17f8bb73 | 20 | * The driver passes all usbtests 1-14. |
4808a1c0 OK |
21 | * |
22 | * Suspending/resuming of root hub via sysfs works. Remote wakeup works too. | |
23 | * And suspending/resuming of platform device works too. Suspend/resume | |
24 | * via HCD operations vector is not implemented. | |
25 | * | |
26 | * Iso transfer support is not implemented. Adding this would include | |
27 | * implementing recovery from the failure to service the processed ITL | |
28 | * fifo ram in time, which will involve chip reset. | |
29 | * | |
30 | * TODO: | |
31 | + More testing of suspend/resume. | |
32 | */ | |
33 | ||
34 | /* | |
35 | ISP116x chips require certain delays between accesses to its | |
36 | registers. The following timing options exist. | |
37 | ||
38 | 1. Configure your memory controller (the best) | |
39 | 2. Implement platform-specific delay function possibly | |
40 | combined with configuring the memory controller; see | |
41 | include/linux/usb-isp116x.h for more info. Some broken | |
42 | memory controllers line LH7A400 SMC need this. Also, | |
43 | uncomment for that to work the following | |
44 | USE_PLATFORM_DELAY macro. | |
45 | 3. Use ndelay (easiest, poorest). For that, uncomment | |
46 | the following USE_NDELAY macro. | |
47 | */ | |
48 | #define USE_PLATFORM_DELAY | |
49 | //#define USE_NDELAY | |
50 | ||
51 | //#define DEBUG | |
52 | //#define VERBOSE | |
53 | /* Transfer descriptors. See dump_ptd() for printout format */ | |
54 | //#define PTD_TRACE | |
55 | /* enqueuing/finishing log of urbs */ | |
56 | //#define URB_TRACE | |
57 | ||
4808a1c0 | 58 | #include <linux/module.h> |
4808a1c0 | 59 | #include <linux/delay.h> |
959eea21 OK |
60 | #include <linux/debugfs.h> |
61 | #include <linux/seq_file.h> | |
4808a1c0 OK |
62 | #include <linux/errno.h> |
63 | #include <linux/init.h> | |
64 | #include <linux/list.h> | |
5a0e3ad6 | 65 | #include <linux/slab.h> |
4808a1c0 | 66 | #include <linux/usb.h> |
325a4af6 | 67 | #include <linux/usb/isp116x.h> |
27729aad | 68 | #include <linux/usb/hcd.h> |
d052d1be | 69 | #include <linux/platform_device.h> |
4808a1c0 OK |
70 | |
71 | #include <asm/io.h> | |
72 | #include <asm/irq.h> | |
73 | #include <asm/system.h> | |
74 | #include <asm/byteorder.h> | |
75 | ||
4808a1c0 OK |
76 | #include "isp116x.h" |
77 | ||
959eea21 | 78 | #define DRIVER_VERSION "03 Nov 2005" |
4808a1c0 OK |
79 | #define DRIVER_DESC "ISP116x USB Host Controller Driver" |
80 | ||
81 | MODULE_DESCRIPTION(DRIVER_DESC); | |
82 | MODULE_LICENSE("GPL"); | |
83 | ||
84 | static const char hcd_name[] = "isp116x-hcd"; | |
85 | ||
86 | /*-----------------------------------------------------------------*/ | |
87 | ||
88 | /* | |
89 | Write len bytes to fifo, pad till 32-bit boundary | |
90 | */ | |
91 | static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len) | |
92 | { | |
93 | u8 *dp = (u8 *) buf; | |
94 | u16 *dp2 = (u16 *) buf; | |
95 | u16 w; | |
96 | int quot = len % 4; | |
97 | ||
28874b7e JM |
98 | /* buffer is already in 'usb data order', which is LE. */ |
99 | /* When reading buffer as u16, we have to take care byte order */ | |
100 | /* doesn't get mixed up */ | |
101 | ||
4808a1c0 OK |
102 | if ((unsigned long)dp2 & 1) { |
103 | /* not aligned */ | |
104 | for (; len > 1; len -= 2) { | |
105 | w = *dp++; | |
106 | w |= *dp++ << 8; | |
107 | isp116x_raw_write_data16(isp116x, w); | |
108 | } | |
109 | if (len) | |
110 | isp116x_write_data16(isp116x, (u16) * dp); | |
111 | } else { | |
112 | /* aligned */ | |
28874b7e JM |
113 | for (; len > 1; len -= 2) { |
114 | /* Keep byte order ! */ | |
115 | isp116x_raw_write_data16(isp116x, cpu_to_le16(*dp2++)); | |
116 | } | |
117 | ||
4808a1c0 OK |
118 | if (len) |
119 | isp116x_write_data16(isp116x, 0xff & *((u8 *) dp2)); | |
120 | } | |
121 | if (quot == 1 || quot == 2) | |
122 | isp116x_raw_write_data16(isp116x, 0); | |
123 | } | |
124 | ||
125 | /* | |
126 | Read len bytes from fifo and then read till 32-bit boundary. | |
127 | */ | |
128 | static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len) | |
129 | { | |
130 | u8 *dp = (u8 *) buf; | |
131 | u16 *dp2 = (u16 *) buf; | |
132 | u16 w; | |
133 | int quot = len % 4; | |
134 | ||
28874b7e JM |
135 | /* buffer is already in 'usb data order', which is LE. */ |
136 | /* When reading buffer as u16, we have to take care byte order */ | |
137 | /* doesn't get mixed up */ | |
138 | ||
4808a1c0 OK |
139 | if ((unsigned long)dp2 & 1) { |
140 | /* not aligned */ | |
141 | for (; len > 1; len -= 2) { | |
142 | w = isp116x_raw_read_data16(isp116x); | |
143 | *dp++ = w & 0xff; | |
144 | *dp++ = (w >> 8) & 0xff; | |
145 | } | |
28874b7e | 146 | |
4808a1c0 OK |
147 | if (len) |
148 | *dp = 0xff & isp116x_read_data16(isp116x); | |
149 | } else { | |
150 | /* aligned */ | |
28874b7e JM |
151 | for (; len > 1; len -= 2) { |
152 | /* Keep byte order! */ | |
153 | *dp2++ = le16_to_cpu(isp116x_raw_read_data16(isp116x)); | |
154 | } | |
155 | ||
4808a1c0 OK |
156 | if (len) |
157 | *(u8 *) dp2 = 0xff & isp116x_read_data16(isp116x); | |
158 | } | |
159 | if (quot == 1 || quot == 2) | |
160 | isp116x_raw_read_data16(isp116x); | |
161 | } | |
162 | ||
163 | /* | |
164 | Write ptd's and data for scheduled transfers into | |
165 | the fifo ram. Fifo must be empty and ready. | |
166 | */ | |
167 | static void pack_fifo(struct isp116x *isp116x) | |
168 | { | |
169 | struct isp116x_ep *ep; | |
170 | struct ptd *ptd; | |
171 | int buflen = isp116x->atl_last_dir == PTD_DIR_IN | |
172 | ? isp116x->atl_bufshrt : isp116x->atl_buflen; | |
4808a1c0 OK |
173 | |
174 | isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT); | |
175 | isp116x_write_reg16(isp116x, HCXFERCTR, buflen); | |
176 | isp116x_write_addr(isp116x, HCATLPORT | ISP116x_WRITE_OFFSET); | |
177 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
4808a1c0 OK |
178 | ptd = &ep->ptd; |
179 | dump_ptd(ptd); | |
180 | dump_ptd_out_data(ptd, ep->data); | |
181 | isp116x_write_data16(isp116x, ptd->count); | |
182 | isp116x_write_data16(isp116x, ptd->mps); | |
183 | isp116x_write_data16(isp116x, ptd->len); | |
184 | isp116x_write_data16(isp116x, ptd->faddr); | |
185 | buflen -= sizeof(struct ptd); | |
186 | /* Skip writing data for last IN PTD */ | |
187 | if (ep->active || (isp116x->atl_last_dir != PTD_DIR_IN)) { | |
188 | write_ptddata_to_fifo(isp116x, ep->data, ep->length); | |
189 | buflen -= ALIGN(ep->length, 4); | |
190 | } | |
191 | } | |
192 | BUG_ON(buflen); | |
193 | } | |
194 | ||
195 | /* | |
196 | Read the processed ptd's and data from fifo ram back to | |
197 | URBs' buffers. Fifo must be full and done | |
198 | */ | |
199 | static void unpack_fifo(struct isp116x *isp116x) | |
200 | { | |
201 | struct isp116x_ep *ep; | |
202 | struct ptd *ptd; | |
203 | int buflen = isp116x->atl_last_dir == PTD_DIR_IN | |
204 | ? isp116x->atl_buflen : isp116x->atl_bufshrt; | |
205 | ||
206 | isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT); | |
207 | isp116x_write_reg16(isp116x, HCXFERCTR, buflen); | |
208 | isp116x_write_addr(isp116x, HCATLPORT); | |
209 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
210 | ptd = &ep->ptd; | |
211 | ptd->count = isp116x_read_data16(isp116x); | |
212 | ptd->mps = isp116x_read_data16(isp116x); | |
213 | ptd->len = isp116x_read_data16(isp116x); | |
214 | ptd->faddr = isp116x_read_data16(isp116x); | |
215 | buflen -= sizeof(struct ptd); | |
216 | /* Skip reading data for last Setup or Out PTD */ | |
217 | if (ep->active || (isp116x->atl_last_dir == PTD_DIR_IN)) { | |
218 | read_ptddata_from_fifo(isp116x, ep->data, ep->length); | |
219 | buflen -= ALIGN(ep->length, 4); | |
220 | } | |
221 | dump_ptd(ptd); | |
222 | dump_ptd_in_data(ptd, ep->data); | |
223 | } | |
224 | BUG_ON(buflen); | |
225 | } | |
226 | ||
227 | /*---------------------------------------------------------------*/ | |
228 | ||
229 | /* | |
230 | Set up PTD's. | |
231 | */ | |
232 | static void preproc_atl_queue(struct isp116x *isp116x) | |
233 | { | |
234 | struct isp116x_ep *ep; | |
235 | struct urb *urb; | |
236 | struct ptd *ptd; | |
f10eff26 | 237 | u16 len; |
4808a1c0 OK |
238 | |
239 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
f10eff26 OK |
240 | u16 toggle = 0, dir = PTD_DIR_SETUP; |
241 | ||
4808a1c0 OK |
242 | BUG_ON(list_empty(&ep->hep->urb_list)); |
243 | urb = container_of(ep->hep->urb_list.next, | |
244 | struct urb, urb_list); | |
245 | ptd = &ep->ptd; | |
246 | len = ep->length; | |
4808a1c0 OK |
247 | ep->data = (unsigned char *)urb->transfer_buffer |
248 | + urb->actual_length; | |
249 | ||
250 | switch (ep->nextpid) { | |
251 | case USB_PID_IN: | |
252 | toggle = usb_gettoggle(urb->dev, ep->epnum, 0); | |
253 | dir = PTD_DIR_IN; | |
254 | break; | |
255 | case USB_PID_OUT: | |
256 | toggle = usb_gettoggle(urb->dev, ep->epnum, 1); | |
257 | dir = PTD_DIR_OUT; | |
258 | break; | |
259 | case USB_PID_SETUP: | |
4808a1c0 OK |
260 | len = sizeof(struct usb_ctrlrequest); |
261 | ep->data = urb->setup_packet; | |
262 | break; | |
263 | case USB_PID_ACK: | |
264 | toggle = 1; | |
265 | len = 0; | |
266 | dir = (urb->transfer_buffer_length | |
267 | && usb_pipein(urb->pipe)) | |
268 | ? PTD_DIR_OUT : PTD_DIR_IN; | |
269 | break; | |
270 | default: | |
4808a1c0 OK |
271 | ERR("%s %d: ep->nextpid %d\n", __func__, __LINE__, |
272 | ep->nextpid); | |
17f8bb73 | 273 | BUG(); |
4808a1c0 OK |
274 | } |
275 | ||
276 | ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); | |
277 | ptd->mps = PTD_MPS(ep->maxpacket) | |
278 | | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | |
279 | | PTD_EP(ep->epnum); | |
280 | ptd->len = PTD_LEN(len) | PTD_DIR(dir); | |
281 | ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); | |
4808a1c0 OK |
282 | if (!ep->active) { |
283 | ptd->mps |= PTD_LAST_MSK; | |
284 | isp116x->atl_last_dir = dir; | |
285 | } | |
286 | isp116x->atl_bufshrt = sizeof(struct ptd) + isp116x->atl_buflen; | |
287 | isp116x->atl_buflen = isp116x->atl_bufshrt + ALIGN(len, 4); | |
288 | } | |
289 | } | |
290 | ||
1b4cd43b AS |
291 | /* |
292 | Take done or failed requests out of schedule. Give back | |
293 | processed urbs. | |
294 | */ | |
295 | static void finish_request(struct isp116x *isp116x, struct isp116x_ep *ep, | |
4a00027d | 296 | struct urb *urb, int status) |
1b4cd43b AS |
297 | __releases(isp116x->lock) __acquires(isp116x->lock) |
298 | { | |
299 | unsigned i; | |
300 | ||
1b4cd43b AS |
301 | ep->error_count = 0; |
302 | ||
303 | if (usb_pipecontrol(urb->pipe)) | |
304 | ep->nextpid = USB_PID_SETUP; | |
305 | ||
306 | urb_dbg(urb, "Finish"); | |
307 | ||
e9df41c5 | 308 | usb_hcd_unlink_urb_from_ep(isp116x_to_hcd(isp116x), urb); |
1b4cd43b | 309 | spin_unlock(&isp116x->lock); |
4a00027d | 310 | usb_hcd_giveback_urb(isp116x_to_hcd(isp116x), urb, status); |
1b4cd43b AS |
311 | spin_lock(&isp116x->lock); |
312 | ||
313 | /* take idle endpoints out of the schedule */ | |
314 | if (!list_empty(&ep->hep->urb_list)) | |
315 | return; | |
316 | ||
317 | /* async deschedule */ | |
318 | if (!list_empty(&ep->schedule)) { | |
319 | list_del_init(&ep->schedule); | |
320 | return; | |
321 | } | |
322 | ||
323 | /* periodic deschedule */ | |
324 | DBG("deschedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); | |
325 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { | |
326 | struct isp116x_ep *temp; | |
327 | struct isp116x_ep **prev = &isp116x->periodic[i]; | |
328 | ||
329 | while (*prev && ((temp = *prev) != ep)) | |
330 | prev = &temp->next; | |
331 | if (*prev) | |
332 | *prev = ep->next; | |
333 | isp116x->load[i] -= ep->load; | |
334 | } | |
335 | ep->branch = PERIODIC_SIZE; | |
336 | isp116x_to_hcd(isp116x)->self.bandwidth_allocated -= | |
337 | ep->load / ep->period; | |
338 | ||
339 | /* switch irq type? */ | |
340 | if (!--isp116x->periodic_count) { | |
341 | isp116x->irqenb &= ~HCuPINT_SOF; | |
342 | isp116x->irqenb |= HCuPINT_ATL; | |
343 | } | |
344 | } | |
345 | ||
4808a1c0 OK |
346 | /* |
347 | Analyze transfer results, handle partial transfers and errors | |
348 | */ | |
349 | static void postproc_atl_queue(struct isp116x *isp116x) | |
350 | { | |
351 | struct isp116x_ep *ep; | |
352 | struct urb *urb; | |
353 | struct usb_device *udev; | |
354 | struct ptd *ptd; | |
355 | int short_not_ok; | |
1b4cd43b | 356 | int status; |
4808a1c0 OK |
357 | u8 cc; |
358 | ||
359 | for (ep = isp116x->atl_active; ep; ep = ep->active) { | |
360 | BUG_ON(list_empty(&ep->hep->urb_list)); | |
361 | urb = | |
362 | container_of(ep->hep->urb_list.next, struct urb, urb_list); | |
363 | udev = urb->dev; | |
364 | ptd = &ep->ptd; | |
365 | cc = PTD_GET_CC(ptd); | |
4808a1c0 | 366 | short_not_ok = 1; |
1b4cd43b | 367 | status = -EINPROGRESS; |
4808a1c0 OK |
368 | |
369 | /* Data underrun is special. For allowed underrun | |
370 | we clear the error and continue as normal. For | |
371 | forbidden underrun we finish the DATA stage | |
372 | immediately while for control transfer, | |
373 | we do a STATUS stage. */ | |
374 | if (cc == TD_DATAUNDERRUN) { | |
1b4cd43b AS |
375 | if (!(urb->transfer_flags & URB_SHORT_NOT_OK) || |
376 | usb_pipecontrol(urb->pipe)) { | |
377 | DBG("Allowed or control data underrun\n"); | |
4808a1c0 OK |
378 | cc = TD_CC_NOERROR; |
379 | short_not_ok = 0; | |
380 | } else { | |
381 | ep->error_count = 1; | |
1b4cd43b AS |
382 | usb_settoggle(udev, ep->epnum, |
383 | ep->nextpid == USB_PID_OUT, | |
384 | PTD_GET_TOGGLE(ptd)); | |
e9b765de | 385 | urb->actual_length += PTD_GET_COUNT(ptd); |
1b4cd43b AS |
386 | status = cc_to_error[TD_DATAUNDERRUN]; |
387 | goto done; | |
4808a1c0 OK |
388 | } |
389 | } | |
4808a1c0 OK |
390 | |
391 | if (cc != TD_CC_NOERROR && cc != TD_NOTACCESSED | |
392 | && (++ep->error_count >= 3 || cc == TD_CC_STALL | |
393 | || cc == TD_DATAOVERRUN)) { | |
1b4cd43b | 394 | status = cc_to_error[cc]; |
4808a1c0 OK |
395 | if (ep->nextpid == USB_PID_ACK) |
396 | ep->nextpid = 0; | |
1b4cd43b | 397 | goto done; |
4808a1c0 OK |
398 | } |
399 | /* According to usb spec, zero-length Int transfer signals | |
400 | finishing of the urb. Hey, does this apply only | |
401 | for IN endpoints? */ | |
402 | if (usb_pipeint(urb->pipe) && !PTD_GET_LEN(ptd)) { | |
1b4cd43b AS |
403 | status = 0; |
404 | goto done; | |
4808a1c0 OK |
405 | } |
406 | ||
407 | /* Relax after previously failed, but later succeeded | |
408 | or correctly NAK'ed retransmission attempt */ | |
409 | if (ep->error_count | |
410 | && (cc == TD_CC_NOERROR || cc == TD_NOTACCESSED)) | |
411 | ep->error_count = 0; | |
412 | ||
413 | /* Take into account idiosyncracies of the isp116x chip | |
414 | regarding toggle bit for failed transfers */ | |
415 | if (ep->nextpid == USB_PID_OUT) | |
416 | usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd) | |
417 | ^ (ep->error_count > 0)); | |
418 | else if (ep->nextpid == USB_PID_IN) | |
419 | usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd) | |
420 | ^ (ep->error_count > 0)); | |
421 | ||
422 | switch (ep->nextpid) { | |
423 | case USB_PID_IN: | |
424 | case USB_PID_OUT: | |
425 | urb->actual_length += PTD_GET_COUNT(ptd); | |
426 | if (PTD_GET_ACTIVE(ptd) | |
427 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
428 | break; | |
429 | if (urb->transfer_buffer_length != urb->actual_length) { | |
430 | if (short_not_ok) | |
431 | break; | |
432 | } else { | |
433 | if (urb->transfer_flags & URB_ZERO_PACKET | |
434 | && ep->nextpid == USB_PID_OUT | |
435 | && !(PTD_GET_COUNT(ptd) % ep->maxpacket)) { | |
436 | DBG("Zero packet requested\n"); | |
437 | break; | |
438 | } | |
439 | } | |
440 | /* All data for this URB is transferred, let's finish */ | |
441 | if (usb_pipecontrol(urb->pipe)) | |
442 | ep->nextpid = USB_PID_ACK; | |
1b4cd43b AS |
443 | else |
444 | status = 0; | |
4808a1c0 OK |
445 | break; |
446 | case USB_PID_SETUP: | |
447 | if (PTD_GET_ACTIVE(ptd) | |
448 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
449 | break; | |
450 | if (urb->transfer_buffer_length == urb->actual_length) | |
451 | ep->nextpid = USB_PID_ACK; | |
452 | else if (usb_pipeout(urb->pipe)) { | |
453 | usb_settoggle(udev, 0, 1, 1); | |
454 | ep->nextpid = USB_PID_OUT; | |
455 | } else { | |
456 | usb_settoggle(udev, 0, 0, 1); | |
457 | ep->nextpid = USB_PID_IN; | |
458 | } | |
459 | break; | |
460 | case USB_PID_ACK: | |
461 | if (PTD_GET_ACTIVE(ptd) | |
462 | || (cc != TD_CC_NOERROR && cc < 0x0E)) | |
463 | break; | |
b0d9efba | 464 | status = 0; |
4808a1c0 OK |
465 | ep->nextpid = 0; |
466 | break; | |
467 | default: | |
959eea21 | 468 | BUG(); |
4808a1c0 | 469 | } |
4808a1c0 | 470 | |
1b4cd43b | 471 | done: |
4a00027d AS |
472 | if (status != -EINPROGRESS || urb->unlinked) |
473 | finish_request(isp116x, ep, urb, status); | |
4808a1c0 OK |
474 | } |
475 | } | |
476 | ||
477 | /* | |
478 | Scan transfer lists, schedule transfers, send data off | |
479 | to chip. | |
480 | */ | |
481 | static void start_atl_transfers(struct isp116x *isp116x) | |
482 | { | |
483 | struct isp116x_ep *last_ep = NULL, *ep; | |
484 | struct urb *urb; | |
485 | u16 load = 0; | |
486 | int len, index, speed, byte_time; | |
487 | ||
488 | if (atomic_read(&isp116x->atl_finishing)) | |
489 | return; | |
490 | ||
491 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) | |
492 | return; | |
493 | ||
494 | /* FIFO not empty? */ | |
495 | if (isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_FULL) | |
496 | return; | |
497 | ||
498 | isp116x->atl_active = NULL; | |
499 | isp116x->atl_buflen = isp116x->atl_bufshrt = 0; | |
500 | ||
501 | /* Schedule int transfers */ | |
502 | if (isp116x->periodic_count) { | |
503 | isp116x->fmindex = index = | |
504 | (isp116x->fmindex + 1) & (PERIODIC_SIZE - 1); | |
505 | if ((load = isp116x->load[index])) { | |
506 | /* Bring all int transfers for this frame | |
507 | into the active queue */ | |
508 | isp116x->atl_active = last_ep = | |
509 | isp116x->periodic[index]; | |
510 | while (last_ep->next) | |
511 | last_ep = (last_ep->active = last_ep->next); | |
512 | last_ep->active = NULL; | |
513 | } | |
514 | } | |
515 | ||
516 | /* Schedule control/bulk transfers */ | |
517 | list_for_each_entry(ep, &isp116x->async, schedule) { | |
518 | urb = container_of(ep->hep->urb_list.next, | |
519 | struct urb, urb_list); | |
520 | speed = urb->dev->speed; | |
521 | byte_time = speed == USB_SPEED_LOW | |
522 | ? BYTE_TIME_LOWSPEED : BYTE_TIME_FULLSPEED; | |
523 | ||
524 | if (ep->nextpid == USB_PID_SETUP) { | |
525 | len = sizeof(struct usb_ctrlrequest); | |
526 | } else if (ep->nextpid == USB_PID_ACK) { | |
527 | len = 0; | |
528 | } else { | |
529 | /* Find current free length ... */ | |
530 | len = (MAX_LOAD_LIMIT - load) / byte_time; | |
531 | ||
532 | /* ... then limit it to configured max size ... */ | |
533 | len = min(len, speed == USB_SPEED_LOW ? | |
534 | MAX_TRANSFER_SIZE_LOWSPEED : | |
535 | MAX_TRANSFER_SIZE_FULLSPEED); | |
536 | ||
537 | /* ... and finally cut to the multiple of MaxPacketSize, | |
538 | or to the real length if there's enough room. */ | |
539 | if (len < | |
540 | (urb->transfer_buffer_length - | |
541 | urb->actual_length)) { | |
542 | len -= len % ep->maxpacket; | |
543 | if (!len) | |
544 | continue; | |
545 | } else | |
546 | len = urb->transfer_buffer_length - | |
547 | urb->actual_length; | |
548 | BUG_ON(len < 0); | |
549 | } | |
550 | ||
551 | load += len * byte_time; | |
552 | if (load > MAX_LOAD_LIMIT) | |
553 | break; | |
554 | ||
555 | ep->active = NULL; | |
556 | ep->length = len; | |
557 | if (last_ep) | |
558 | last_ep->active = ep; | |
559 | else | |
560 | isp116x->atl_active = ep; | |
561 | last_ep = ep; | |
562 | } | |
563 | ||
564 | /* Avoid starving of endpoints */ | |
565 | if ((&isp116x->async)->next != (&isp116x->async)->prev) | |
566 | list_move(&isp116x->async, (&isp116x->async)->next); | |
567 | ||
568 | if (isp116x->atl_active) { | |
569 | preproc_atl_queue(isp116x); | |
570 | pack_fifo(isp116x); | |
571 | } | |
572 | } | |
573 | ||
574 | /* | |
575 | Finish the processed transfers | |
576 | */ | |
7d12e780 | 577 | static void finish_atl_transfers(struct isp116x *isp116x) |
4808a1c0 | 578 | { |
4808a1c0 OK |
579 | if (!isp116x->atl_active) |
580 | return; | |
581 | /* Fifo not ready? */ | |
582 | if (!(isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_DONE)) | |
583 | return; | |
584 | ||
585 | atomic_inc(&isp116x->atl_finishing); | |
586 | unpack_fifo(isp116x); | |
587 | postproc_atl_queue(isp116x); | |
4808a1c0 OK |
588 | atomic_dec(&isp116x->atl_finishing); |
589 | } | |
590 | ||
7d12e780 | 591 | static irqreturn_t isp116x_irq(struct usb_hcd *hcd) |
4808a1c0 OK |
592 | { |
593 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
594 | u16 irqstat; | |
595 | irqreturn_t ret = IRQ_NONE; | |
596 | ||
597 | spin_lock(&isp116x->lock); | |
598 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
599 | irqstat = isp116x_read_reg16(isp116x, HCuPINT); | |
600 | isp116x_write_reg16(isp116x, HCuPINT, irqstat); | |
601 | ||
602 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { | |
603 | ret = IRQ_HANDLED; | |
7d12e780 | 604 | finish_atl_transfers(isp116x); |
4808a1c0 OK |
605 | } |
606 | ||
607 | if (irqstat & HCuPINT_OPR) { | |
608 | u32 intstat = isp116x_read_reg32(isp116x, HCINTSTAT); | |
609 | isp116x_write_reg32(isp116x, HCINTSTAT, intstat); | |
610 | if (intstat & HCINT_UE) { | |
959eea21 OK |
611 | ERR("Unrecoverable error, HC is dead!\n"); |
612 | /* IRQ's are off, we do no DMA, | |
613 | perfectly ready to die ... */ | |
614 | hcd->state = HC_STATE_HALT; | |
615 | ret = IRQ_HANDLED; | |
616 | goto done; | |
4808a1c0 | 617 | } |
9a57116b OK |
618 | if (intstat & HCINT_RHSC) |
619 | /* When root hub or any of its ports is going | |
620 | to come out of suspend, it may take more | |
621 | than 10ms for status bits to stabilize. */ | |
622 | mod_timer(&hcd->rh_timer, jiffies | |
623 | + msecs_to_jiffies(20) + 1); | |
4808a1c0 OK |
624 | if (intstat & HCINT_RD) { |
625 | DBG("---- remote wakeup\n"); | |
ccdcf77a | 626 | usb_hcd_resume_root_hub(hcd); |
4808a1c0 OK |
627 | } |
628 | irqstat &= ~HCuPINT_OPR; | |
629 | ret = IRQ_HANDLED; | |
630 | } | |
631 | ||
632 | if (irqstat & (HCuPINT_ATL | HCuPINT_SOF)) { | |
633 | start_atl_transfers(isp116x); | |
634 | } | |
635 | ||
636 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); | |
959eea21 | 637 | done: |
4808a1c0 OK |
638 | spin_unlock(&isp116x->lock); |
639 | return ret; | |
640 | } | |
641 | ||
642 | /*-----------------------------------------------------------------*/ | |
643 | ||
644 | /* usb 1.1 says max 90% of a frame is available for periodic transfers. | |
645 | * this driver doesn't promise that much since it's got to handle an | |
646 | * IRQ per packet; irq handling latencies also use up that time. | |
647 | */ | |
648 | ||
649 | /* out of 1000 us */ | |
650 | #define MAX_PERIODIC_LOAD 600 | |
651 | static int balance(struct isp116x *isp116x, u16 period, u16 load) | |
652 | { | |
653 | int i, branch = -ENOSPC; | |
654 | ||
655 | /* search for the least loaded schedule branch of that period | |
656 | which has enough bandwidth left unreserved. */ | |
657 | for (i = 0; i < period; i++) { | |
658 | if (branch < 0 || isp116x->load[branch] > isp116x->load[i]) { | |
659 | int j; | |
660 | ||
661 | for (j = i; j < PERIODIC_SIZE; j += period) { | |
662 | if ((isp116x->load[j] + load) | |
663 | > MAX_PERIODIC_LOAD) | |
664 | break; | |
665 | } | |
666 | if (j < PERIODIC_SIZE) | |
667 | continue; | |
668 | branch = i; | |
669 | } | |
670 | } | |
671 | return branch; | |
672 | } | |
673 | ||
674 | /* NB! ALL the code above this point runs with isp116x->lock | |
675 | held, irqs off | |
676 | */ | |
677 | ||
678 | /*-----------------------------------------------------------------*/ | |
679 | ||
680 | static int isp116x_urb_enqueue(struct usb_hcd *hcd, | |
e9df41c5 | 681 | struct urb *urb, |
55016f10 | 682 | gfp_t mem_flags) |
4808a1c0 OK |
683 | { |
684 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
685 | struct usb_device *udev = urb->dev; | |
686 | unsigned int pipe = urb->pipe; | |
687 | int is_out = !usb_pipein(pipe); | |
688 | int type = usb_pipetype(pipe); | |
689 | int epnum = usb_pipeendpoint(pipe); | |
e9df41c5 | 690 | struct usb_host_endpoint *hep = urb->ep; |
4808a1c0 OK |
691 | struct isp116x_ep *ep = NULL; |
692 | unsigned long flags; | |
693 | int i; | |
694 | int ret = 0; | |
695 | ||
696 | urb_dbg(urb, "Enqueue"); | |
697 | ||
698 | if (type == PIPE_ISOCHRONOUS) { | |
699 | ERR("Isochronous transfers not supported\n"); | |
700 | urb_dbg(urb, "Refused to enqueue"); | |
701 | return -ENXIO; | |
702 | } | |
703 | /* avoid all allocations within spinlocks: request or endpoint */ | |
704 | if (!hep->hcpriv) { | |
7b842b6e | 705 | ep = kzalloc(sizeof *ep, mem_flags); |
4808a1c0 OK |
706 | if (!ep) |
707 | return -ENOMEM; | |
708 | } | |
709 | ||
710 | spin_lock_irqsave(&isp116x->lock, flags); | |
711 | if (!HC_IS_RUNNING(hcd->state)) { | |
959eea21 | 712 | kfree(ep); |
4808a1c0 | 713 | ret = -ENODEV; |
e9df41c5 AS |
714 | goto fail_not_linked; |
715 | } | |
716 | ret = usb_hcd_link_urb_to_ep(hcd, urb); | |
717 | if (ret) { | |
718 | kfree(ep); | |
719 | goto fail_not_linked; | |
4808a1c0 OK |
720 | } |
721 | ||
722 | if (hep->hcpriv) | |
723 | ep = hep->hcpriv; | |
724 | else { | |
725 | INIT_LIST_HEAD(&ep->schedule); | |
6a8e87b2 | 726 | ep->udev = udev; |
4808a1c0 OK |
727 | ep->epnum = epnum; |
728 | ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out); | |
729 | usb_settoggle(udev, epnum, is_out, 0); | |
730 | ||
731 | if (type == PIPE_CONTROL) { | |
732 | ep->nextpid = USB_PID_SETUP; | |
733 | } else if (is_out) { | |
734 | ep->nextpid = USB_PID_OUT; | |
735 | } else { | |
736 | ep->nextpid = USB_PID_IN; | |
737 | } | |
738 | ||
739 | if (urb->interval) { | |
740 | /* | |
741 | With INT URBs submitted, the driver works with SOF | |
742 | interrupt enabled and ATL interrupt disabled. After | |
743 | the PTDs are written to fifo ram, the chip starts | |
744 | fifo processing and usb transfers after the next | |
745 | SOF and continues until the transfers are finished | |
746 | (succeeded or failed) or the frame ends. Therefore, | |
747 | the transfers occur only in every second frame, | |
748 | while fifo reading/writing and data processing | |
749 | occur in every other second frame. */ | |
750 | if (urb->interval < 2) | |
751 | urb->interval = 2; | |
752 | if (urb->interval > 2 * PERIODIC_SIZE) | |
753 | urb->interval = 2 * PERIODIC_SIZE; | |
754 | ep->period = urb->interval >> 1; | |
755 | ep->branch = PERIODIC_SIZE; | |
756 | ep->load = usb_calc_bus_time(udev->speed, | |
757 | !is_out, | |
758 | (type == PIPE_ISOCHRONOUS), | |
759 | usb_maxpacket(udev, pipe, | |
760 | is_out)) / | |
761 | 1000; | |
762 | } | |
763 | hep->hcpriv = ep; | |
764 | ep->hep = hep; | |
765 | } | |
766 | ||
767 | /* maybe put endpoint into schedule */ | |
768 | switch (type) { | |
769 | case PIPE_CONTROL: | |
770 | case PIPE_BULK: | |
771 | if (list_empty(&ep->schedule)) | |
772 | list_add_tail(&ep->schedule, &isp116x->async); | |
773 | break; | |
774 | case PIPE_INTERRUPT: | |
775 | urb->interval = ep->period; | |
16e2e5f6 | 776 | ep->length = min_t(u32, ep->maxpacket, |
4808a1c0 OK |
777 | urb->transfer_buffer_length); |
778 | ||
779 | /* urb submitted for already existing endpoint */ | |
780 | if (ep->branch < PERIODIC_SIZE) | |
781 | break; | |
782 | ||
d5ce1379 | 783 | ep->branch = ret = balance(isp116x, ep->period, ep->load); |
4808a1c0 OK |
784 | if (ret < 0) |
785 | goto fail; | |
786 | ret = 0; | |
787 | ||
788 | urb->start_frame = (isp116x->fmindex & (PERIODIC_SIZE - 1)) | |
789 | + ep->branch; | |
790 | ||
791 | /* sort each schedule branch by period (slow before fast) | |
792 | to share the faster parts of the tree without needing | |
793 | dummy/placeholder nodes */ | |
794 | DBG("schedule qh%d/%p branch %d\n", ep->period, ep, ep->branch); | |
795 | for (i = ep->branch; i < PERIODIC_SIZE; i += ep->period) { | |
796 | struct isp116x_ep **prev = &isp116x->periodic[i]; | |
797 | struct isp116x_ep *here = *prev; | |
798 | ||
799 | while (here && ep != here) { | |
800 | if (ep->period > here->period) | |
801 | break; | |
802 | prev = &here->next; | |
803 | here = *prev; | |
804 | } | |
805 | if (ep != here) { | |
806 | ep->next = here; | |
807 | *prev = ep; | |
808 | } | |
809 | isp116x->load[i] += ep->load; | |
810 | } | |
811 | hcd->self.bandwidth_allocated += ep->load / ep->period; | |
812 | ||
813 | /* switch over to SOFint */ | |
814 | if (!isp116x->periodic_count++) { | |
815 | isp116x->irqenb &= ~HCuPINT_ATL; | |
816 | isp116x->irqenb |= HCuPINT_SOF; | |
817 | isp116x_write_reg16(isp116x, HCuPINTENB, | |
818 | isp116x->irqenb); | |
819 | } | |
820 | } | |
821 | ||
4808a1c0 | 822 | urb->hcpriv = hep; |
4808a1c0 OK |
823 | start_atl_transfers(isp116x); |
824 | ||
825 | fail: | |
e9df41c5 AS |
826 | if (ret) |
827 | usb_hcd_unlink_urb_from_ep(hcd, urb); | |
828 | fail_not_linked: | |
4808a1c0 OK |
829 | spin_unlock_irqrestore(&isp116x->lock, flags); |
830 | return ret; | |
831 | } | |
832 | ||
833 | /* | |
834 | Dequeue URBs. | |
835 | */ | |
e9df41c5 AS |
836 | static int isp116x_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, |
837 | int status) | |
4808a1c0 OK |
838 | { |
839 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
840 | struct usb_host_endpoint *hep; | |
841 | struct isp116x_ep *ep, *ep_act; | |
842 | unsigned long flags; | |
e9df41c5 | 843 | int rc; |
4808a1c0 OK |
844 | |
845 | spin_lock_irqsave(&isp116x->lock, flags); | |
e9df41c5 AS |
846 | rc = usb_hcd_check_unlink_urb(hcd, urb, status); |
847 | if (rc) | |
848 | goto done; | |
849 | ||
4808a1c0 | 850 | hep = urb->hcpriv; |
4808a1c0 OK |
851 | ep = hep->hcpriv; |
852 | WARN_ON(hep != ep->hep); | |
853 | ||
854 | /* In front of queue? */ | |
855 | if (ep->hep->urb_list.next == &urb->urb_list) | |
856 | /* active? */ | |
857 | for (ep_act = isp116x->atl_active; ep_act; | |
858 | ep_act = ep_act->active) | |
859 | if (ep_act == ep) { | |
860 | VDBG("dequeue, urb %p active; wait for irq\n", | |
861 | urb); | |
862 | urb = NULL; | |
863 | break; | |
864 | } | |
865 | ||
866 | if (urb) | |
4a00027d | 867 | finish_request(isp116x, ep, urb, status); |
e9df41c5 | 868 | done: |
4808a1c0 | 869 | spin_unlock_irqrestore(&isp116x->lock, flags); |
e9df41c5 | 870 | return rc; |
4808a1c0 OK |
871 | } |
872 | ||
873 | static void isp116x_endpoint_disable(struct usb_hcd *hcd, | |
874 | struct usb_host_endpoint *hep) | |
875 | { | |
876 | int i; | |
959eea21 | 877 | struct isp116x_ep *ep = hep->hcpriv; |
4808a1c0 OK |
878 | |
879 | if (!ep) | |
880 | return; | |
881 | ||
882 | /* assume we'd just wait for the irq */ | |
883 | for (i = 0; i < 100 && !list_empty(&hep->urb_list); i++) | |
884 | msleep(3); | |
885 | if (!list_empty(&hep->urb_list)) | |
b6c63937 | 886 | WARNING("ep %p not empty?\n", ep); |
4808a1c0 | 887 | |
4808a1c0 OK |
888 | kfree(ep); |
889 | hep->hcpriv = NULL; | |
890 | } | |
891 | ||
892 | static int isp116x_get_frame(struct usb_hcd *hcd) | |
893 | { | |
894 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
895 | u32 fmnum; | |
896 | unsigned long flags; | |
897 | ||
898 | spin_lock_irqsave(&isp116x->lock, flags); | |
899 | fmnum = isp116x_read_reg32(isp116x, HCFMNUM); | |
900 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
901 | return (int)fmnum; | |
902 | } | |
903 | ||
4808a1c0 OK |
904 | /* |
905 | Adapted from ohci-hub.c. Currently we don't support autosuspend. | |
906 | */ | |
907 | static int isp116x_hub_status_data(struct usb_hcd *hcd, char *buf) | |
908 | { | |
909 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
910 | int ports, i, changed = 0; | |
9a57116b | 911 | unsigned long flags; |
4808a1c0 OK |
912 | |
913 | if (!HC_IS_RUNNING(hcd->state)) | |
914 | return -ESHUTDOWN; | |
915 | ||
9a57116b OK |
916 | /* Report no status change now, if we are scheduled to be |
917 | called later */ | |
918 | if (timer_pending(&hcd->rh_timer)) | |
919 | return 0; | |
4808a1c0 | 920 | |
9a57116b OK |
921 | ports = isp116x->rhdesca & RH_A_NDP; |
922 | spin_lock_irqsave(&isp116x->lock, flags); | |
923 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); | |
4808a1c0 OK |
924 | if (isp116x->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) |
925 | buf[0] = changed = 1; | |
926 | else | |
927 | buf[0] = 0; | |
928 | ||
929 | for (i = 0; i < ports; i++) { | |
0ed930bf | 930 | u32 status = isp116x_read_reg32(isp116x, i ? HCRHPORT2 : HCRHPORT1); |
4808a1c0 OK |
931 | |
932 | if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | |
933 | | RH_PS_OCIC | RH_PS_PRSC)) { | |
934 | changed = 1; | |
935 | buf[0] |= 1 << (i + 1); | |
4808a1c0 OK |
936 | } |
937 | } | |
9a57116b | 938 | spin_unlock_irqrestore(&isp116x->lock, flags); |
4808a1c0 OK |
939 | return changed; |
940 | } | |
941 | ||
942 | static void isp116x_hub_descriptor(struct isp116x *isp116x, | |
943 | struct usb_hub_descriptor *desc) | |
944 | { | |
945 | u32 reg = isp116x->rhdesca; | |
946 | ||
947 | desc->bDescriptorType = 0x29; | |
948 | desc->bDescLength = 9; | |
949 | desc->bHubContrCurrent = 0; | |
950 | desc->bNbrPorts = (u8) (reg & 0x3); | |
951 | /* Power switching, device type, overcurrent. */ | |
959eea21 | 952 | desc->wHubCharacteristics = cpu_to_le16((u16) ((reg >> 8) & 0x1f)); |
4808a1c0 | 953 | desc->bPwrOn2PwrGood = (u8) ((reg >> 24) & 0xff); |
da13051c SS |
954 | /* ports removable, and legacy PortPwrCtrlMask */ |
955 | desc->DeviceRemovable[0] = 0; | |
956 | desc->DeviceRemovable[1] = ~0; | |
4808a1c0 OK |
957 | } |
958 | ||
959 | /* Perform reset of a given port. | |
960 | It would be great to just start the reset and let the | |
961 | USB core to clear the reset in due time. However, | |
962 | root hub ports should be reset for at least 50 ms, while | |
963 | our chip stays in reset for about 10 ms. I.e., we must | |
964 | repeatedly reset it ourself here. | |
965 | */ | |
966 | static inline void root_port_reset(struct isp116x *isp116x, unsigned port) | |
967 | { | |
968 | u32 tmp; | |
969 | unsigned long flags, t; | |
970 | ||
971 | /* Root hub reset should be 50 ms, but some devices | |
972 | want it even longer. */ | |
973 | t = jiffies + msecs_to_jiffies(100); | |
974 | ||
975 | while (time_before(jiffies, t)) { | |
976 | spin_lock_irqsave(&isp116x->lock, flags); | |
977 | /* spin until any current reset finishes */ | |
978 | for (;;) { | |
979 | tmp = isp116x_read_reg32(isp116x, port ? | |
980 | HCRHPORT2 : HCRHPORT1); | |
981 | if (!(tmp & RH_PS_PRS)) | |
982 | break; | |
983 | udelay(500); | |
984 | } | |
985 | /* Don't reset a disconnected port */ | |
986 | if (!(tmp & RH_PS_CCS)) { | |
987 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
988 | break; | |
989 | } | |
990 | /* Reset lasts 10ms (claims datasheet) */ | |
991 | isp116x_write_reg32(isp116x, port ? HCRHPORT2 : | |
992 | HCRHPORT1, (RH_PS_PRS)); | |
993 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
994 | msleep(10); | |
995 | } | |
996 | } | |
997 | ||
998 | /* Adapted from ohci-hub.c */ | |
999 | static int isp116x_hub_control(struct usb_hcd *hcd, | |
1000 | u16 typeReq, | |
1001 | u16 wValue, u16 wIndex, char *buf, u16 wLength) | |
1002 | { | |
1003 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1004 | int ret = 0; | |
1005 | unsigned long flags; | |
1006 | int ports = isp116x->rhdesca & RH_A_NDP; | |
1007 | u32 tmp = 0; | |
1008 | ||
1009 | switch (typeReq) { | |
1010 | case ClearHubFeature: | |
1011 | DBG("ClearHubFeature: "); | |
1012 | switch (wValue) { | |
1013 | case C_HUB_OVER_CURRENT: | |
1014 | DBG("C_HUB_OVER_CURRENT\n"); | |
1015 | spin_lock_irqsave(&isp116x->lock, flags); | |
1016 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_OCIC); | |
1017 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1018 | case C_HUB_LOCAL_POWER: | |
1019 | DBG("C_HUB_LOCAL_POWER\n"); | |
1020 | break; | |
1021 | default: | |
1022 | goto error; | |
1023 | } | |
1024 | break; | |
1025 | case SetHubFeature: | |
1026 | DBG("SetHubFeature: "); | |
1027 | switch (wValue) { | |
1028 | case C_HUB_OVER_CURRENT: | |
1029 | case C_HUB_LOCAL_POWER: | |
1030 | DBG("C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); | |
1031 | break; | |
1032 | default: | |
1033 | goto error; | |
1034 | } | |
1035 | break; | |
1036 | case GetHubDescriptor: | |
1037 | DBG("GetHubDescriptor\n"); | |
1038 | isp116x_hub_descriptor(isp116x, | |
1039 | (struct usb_hub_descriptor *)buf); | |
1040 | break; | |
1041 | case GetHubStatus: | |
1042 | DBG("GetHubStatus\n"); | |
17f8bb73 | 1043 | *(__le32 *) buf = 0; |
4808a1c0 OK |
1044 | break; |
1045 | case GetPortStatus: | |
1046 | DBG("GetPortStatus\n"); | |
1047 | if (!wIndex || wIndex > ports) | |
1048 | goto error; | |
0ed930bf AS |
1049 | spin_lock_irqsave(&isp116x->lock, flags); |
1050 | tmp = isp116x_read_reg32(isp116x, (--wIndex) ? HCRHPORT2 : HCRHPORT1); | |
1051 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
4808a1c0 OK |
1052 | *(__le32 *) buf = cpu_to_le32(tmp); |
1053 | DBG("GetPortStatus: port[%d] %08x\n", wIndex + 1, tmp); | |
1054 | break; | |
1055 | case ClearPortFeature: | |
1056 | DBG("ClearPortFeature: "); | |
1057 | if (!wIndex || wIndex > ports) | |
1058 | goto error; | |
1059 | wIndex--; | |
1060 | ||
1061 | switch (wValue) { | |
1062 | case USB_PORT_FEAT_ENABLE: | |
1063 | DBG("USB_PORT_FEAT_ENABLE\n"); | |
1064 | tmp = RH_PS_CCS; | |
1065 | break; | |
1066 | case USB_PORT_FEAT_C_ENABLE: | |
1067 | DBG("USB_PORT_FEAT_C_ENABLE\n"); | |
1068 | tmp = RH_PS_PESC; | |
1069 | break; | |
1070 | case USB_PORT_FEAT_SUSPEND: | |
1071 | DBG("USB_PORT_FEAT_SUSPEND\n"); | |
1072 | tmp = RH_PS_POCI; | |
1073 | break; | |
1074 | case USB_PORT_FEAT_C_SUSPEND: | |
1075 | DBG("USB_PORT_FEAT_C_SUSPEND\n"); | |
1076 | tmp = RH_PS_PSSC; | |
1077 | break; | |
1078 | case USB_PORT_FEAT_POWER: | |
1079 | DBG("USB_PORT_FEAT_POWER\n"); | |
1080 | tmp = RH_PS_LSDA; | |
1081 | break; | |
1082 | case USB_PORT_FEAT_C_CONNECTION: | |
1083 | DBG("USB_PORT_FEAT_C_CONNECTION\n"); | |
1084 | tmp = RH_PS_CSC; | |
1085 | break; | |
1086 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
1087 | DBG("USB_PORT_FEAT_C_OVER_CURRENT\n"); | |
1088 | tmp = RH_PS_OCIC; | |
1089 | break; | |
1090 | case USB_PORT_FEAT_C_RESET: | |
1091 | DBG("USB_PORT_FEAT_C_RESET\n"); | |
1092 | tmp = RH_PS_PRSC; | |
1093 | break; | |
1094 | default: | |
1095 | goto error; | |
1096 | } | |
1097 | spin_lock_irqsave(&isp116x->lock, flags); | |
1098 | isp116x_write_reg32(isp116x, wIndex | |
1099 | ? HCRHPORT2 : HCRHPORT1, tmp); | |
4808a1c0 OK |
1100 | spin_unlock_irqrestore(&isp116x->lock, flags); |
1101 | break; | |
1102 | case SetPortFeature: | |
1103 | DBG("SetPortFeature: "); | |
1104 | if (!wIndex || wIndex > ports) | |
1105 | goto error; | |
1106 | wIndex--; | |
1107 | switch (wValue) { | |
1108 | case USB_PORT_FEAT_SUSPEND: | |
1109 | DBG("USB_PORT_FEAT_SUSPEND\n"); | |
1110 | spin_lock_irqsave(&isp116x->lock, flags); | |
1111 | isp116x_write_reg32(isp116x, wIndex | |
1112 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PSS); | |
0ed930bf | 1113 | spin_unlock_irqrestore(&isp116x->lock, flags); |
4808a1c0 OK |
1114 | break; |
1115 | case USB_PORT_FEAT_POWER: | |
1116 | DBG("USB_PORT_FEAT_POWER\n"); | |
1117 | spin_lock_irqsave(&isp116x->lock, flags); | |
1118 | isp116x_write_reg32(isp116x, wIndex | |
1119 | ? HCRHPORT2 : HCRHPORT1, RH_PS_PPS); | |
0ed930bf | 1120 | spin_unlock_irqrestore(&isp116x->lock, flags); |
4808a1c0 OK |
1121 | break; |
1122 | case USB_PORT_FEAT_RESET: | |
1123 | DBG("USB_PORT_FEAT_RESET\n"); | |
1124 | root_port_reset(isp116x, wIndex); | |
4808a1c0 OK |
1125 | break; |
1126 | default: | |
1127 | goto error; | |
1128 | } | |
4808a1c0 OK |
1129 | break; |
1130 | ||
1131 | default: | |
1132 | error: | |
1133 | /* "protocol stall" on error */ | |
1134 | DBG("PROTOCOL STALL\n"); | |
1135 | ret = -EPIPE; | |
1136 | } | |
1137 | return ret; | |
1138 | } | |
1139 | ||
4808a1c0 OK |
1140 | /*-----------------------------------------------------------------*/ |
1141 | ||
959eea21 | 1142 | #ifdef CONFIG_DEBUG_FS |
4808a1c0 OK |
1143 | |
1144 | static void dump_irq(struct seq_file *s, char *label, u16 mask) | |
1145 | { | |
1146 | seq_printf(s, "%s %04x%s%s%s%s%s%s\n", label, mask, | |
1147 | mask & HCuPINT_CLKRDY ? " clkrdy" : "", | |
1148 | mask & HCuPINT_SUSP ? " susp" : "", | |
1149 | mask & HCuPINT_OPR ? " opr" : "", | |
1150 | mask & HCuPINT_AIIEOT ? " eot" : "", | |
1151 | mask & HCuPINT_ATL ? " atl" : "", | |
1152 | mask & HCuPINT_SOF ? " sof" : ""); | |
1153 | } | |
1154 | ||
1155 | static void dump_int(struct seq_file *s, char *label, u32 mask) | |
1156 | { | |
1157 | seq_printf(s, "%s %08x%s%s%s%s%s%s%s\n", label, mask, | |
1158 | mask & HCINT_MIE ? " MIE" : "", | |
1159 | mask & HCINT_RHSC ? " rhsc" : "", | |
1160 | mask & HCINT_FNO ? " fno" : "", | |
1161 | mask & HCINT_UE ? " ue" : "", | |
1162 | mask & HCINT_RD ? " rd" : "", | |
1163 | mask & HCINT_SF ? " sof" : "", mask & HCINT_SO ? " so" : ""); | |
1164 | } | |
1165 | ||
959eea21 | 1166 | static int isp116x_show_dbg(struct seq_file *s, void *unused) |
4808a1c0 OK |
1167 | { |
1168 | struct isp116x *isp116x = s->private; | |
4808a1c0 OK |
1169 | |
1170 | seq_printf(s, "%s\n%s version %s\n", | |
1171 | isp116x_to_hcd(isp116x)->product_desc, hcd_name, | |
1172 | DRIVER_VERSION); | |
1173 | ||
1174 | if (HC_IS_SUSPENDED(isp116x_to_hcd(isp116x)->state)) { | |
1175 | seq_printf(s, "HCD is suspended\n"); | |
1176 | return 0; | |
1177 | } | |
1178 | if (!HC_IS_RUNNING(isp116x_to_hcd(isp116x)->state)) { | |
1179 | seq_printf(s, "HCD not running\n"); | |
1180 | return 0; | |
1181 | } | |
1182 | ||
1183 | spin_lock_irq(&isp116x->lock); | |
4808a1c0 OK |
1184 | dump_irq(s, "hc_irq_enable", isp116x_read_reg16(isp116x, HCuPINTENB)); |
1185 | dump_irq(s, "hc_irq_status", isp116x_read_reg16(isp116x, HCuPINT)); | |
1186 | dump_int(s, "hc_int_enable", isp116x_read_reg32(isp116x, HCINTENB)); | |
1187 | dump_int(s, "hc_int_status", isp116x_read_reg32(isp116x, HCINTSTAT)); | |
959eea21 | 1188 | isp116x_show_regs_seq(isp116x, s); |
4808a1c0 OK |
1189 | spin_unlock_irq(&isp116x->lock); |
1190 | seq_printf(s, "\n"); | |
1191 | ||
1192 | return 0; | |
1193 | } | |
1194 | ||
959eea21 | 1195 | static int isp116x_open_seq(struct inode *inode, struct file *file) |
4808a1c0 | 1196 | { |
8e18e294 | 1197 | return single_open(file, isp116x_show_dbg, inode->i_private); |
4808a1c0 OK |
1198 | } |
1199 | ||
066202dd | 1200 | static const struct file_operations isp116x_debug_fops = { |
959eea21 | 1201 | .open = isp116x_open_seq, |
4808a1c0 OK |
1202 | .read = seq_read, |
1203 | .llseek = seq_lseek, | |
1204 | .release = single_release, | |
1205 | }; | |
1206 | ||
959eea21 | 1207 | static int create_debug_file(struct isp116x *isp116x) |
4808a1c0 | 1208 | { |
959eea21 OK |
1209 | isp116x->dentry = debugfs_create_file(hcd_name, |
1210 | S_IRUGO, NULL, isp116x, | |
1211 | &isp116x_debug_fops); | |
1212 | if (!isp116x->dentry) | |
1213 | return -ENOMEM; | |
1214 | return 0; | |
4808a1c0 OK |
1215 | } |
1216 | ||
1217 | static void remove_debug_file(struct isp116x *isp116x) | |
1218 | { | |
959eea21 | 1219 | debugfs_remove(isp116x->dentry); |
4808a1c0 OK |
1220 | } |
1221 | ||
959eea21 OK |
1222 | #else |
1223 | ||
1224 | #define create_debug_file(d) 0 | |
1225 | #define remove_debug_file(d) do{}while(0) | |
1226 | ||
1227 | #endif /* CONFIG_DEBUG_FS */ | |
4808a1c0 OK |
1228 | |
1229 | /*-----------------------------------------------------------------*/ | |
1230 | ||
1231 | /* | |
1232 | Software reset - can be called from any contect. | |
1233 | */ | |
1234 | static int isp116x_sw_reset(struct isp116x *isp116x) | |
1235 | { | |
1236 | int retries = 15; | |
1237 | unsigned long flags; | |
1238 | int ret = 0; | |
1239 | ||
1240 | spin_lock_irqsave(&isp116x->lock, flags); | |
1241 | isp116x_write_reg16(isp116x, HCSWRES, HCSWRES_MAGIC); | |
1242 | isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR); | |
1243 | while (--retries) { | |
1244 | /* It usually resets within 1 ms */ | |
1245 | mdelay(1); | |
1246 | if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR)) | |
1247 | break; | |
1248 | } | |
1249 | if (!retries) { | |
1250 | ERR("Software reset timeout\n"); | |
1251 | ret = -ETIME; | |
1252 | } | |
1253 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1254 | return ret; | |
1255 | } | |
1256 | ||
4808a1c0 OK |
1257 | static int isp116x_reset(struct usb_hcd *hcd) |
1258 | { | |
1259 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1260 | unsigned long t; | |
1261 | u16 clkrdy = 0; | |
959eea21 | 1262 | int ret, timeout = 15 /* ms */ ; |
4808a1c0 | 1263 | |
f8d23d30 | 1264 | ret = isp116x_sw_reset(isp116x); |
4808a1c0 OK |
1265 | if (ret) |
1266 | return ret; | |
1267 | ||
1268 | t = jiffies + msecs_to_jiffies(timeout); | |
1269 | while (time_before_eq(jiffies, t)) { | |
1270 | msleep(4); | |
1271 | spin_lock_irq(&isp116x->lock); | |
1272 | clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY; | |
1273 | spin_unlock_irq(&isp116x->lock); | |
1274 | if (clkrdy) | |
1275 | break; | |
1276 | } | |
1277 | if (!clkrdy) { | |
959eea21 | 1278 | ERR("Clock not ready after %dms\n", timeout); |
589a0083 OK |
1279 | /* After sw_reset the clock won't report to be ready, if |
1280 | H_WAKEUP pin is high. */ | |
f8d23d30 | 1281 | ERR("Please make sure that the H_WAKEUP pin is pulled low!\n"); |
4808a1c0 OK |
1282 | ret = -ENODEV; |
1283 | } | |
1284 | return ret; | |
1285 | } | |
1286 | ||
1287 | static void isp116x_stop(struct usb_hcd *hcd) | |
1288 | { | |
1289 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1290 | unsigned long flags; | |
1291 | u32 val; | |
1292 | ||
1293 | spin_lock_irqsave(&isp116x->lock, flags); | |
1294 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
1295 | ||
1296 | /* Switch off ports' power, some devices don't come up | |
1297 | after next 'insmod' without this */ | |
1298 | val = isp116x_read_reg32(isp116x, HCRHDESCA); | |
1299 | val &= ~(RH_A_NPS | RH_A_PSM); | |
1300 | isp116x_write_reg32(isp116x, HCRHDESCA, val); | |
1301 | isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS); | |
1302 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1303 | ||
f8d23d30 | 1304 | isp116x_sw_reset(isp116x); |
4808a1c0 OK |
1305 | } |
1306 | ||
1307 | /* | |
1308 | Configure the chip. The chip must be successfully reset by now. | |
1309 | */ | |
1310 | static int isp116x_start(struct usb_hcd *hcd) | |
1311 | { | |
1312 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1313 | struct isp116x_platform_data *board = isp116x->board; | |
4808a1c0 OK |
1314 | u32 val; |
1315 | unsigned long flags; | |
1316 | ||
1317 | spin_lock_irqsave(&isp116x->lock, flags); | |
1318 | ||
1319 | /* clear interrupt status and disable all interrupt sources */ | |
1320 | isp116x_write_reg16(isp116x, HCuPINT, 0xff); | |
1321 | isp116x_write_reg16(isp116x, HCuPINTENB, 0); | |
1322 | ||
1323 | val = isp116x_read_reg16(isp116x, HCCHIPID); | |
1324 | if ((val & HCCHIPID_MASK) != HCCHIPID_MAGIC) { | |
1325 | ERR("Invalid chip ID %04x\n", val); | |
1326 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
1327 | return -ENODEV; | |
1328 | } | |
1329 | ||
9a57116b OK |
1330 | /* To be removed in future */ |
1331 | hcd->uses_new_polling = 1; | |
1332 | ||
4808a1c0 OK |
1333 | isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE); |
1334 | isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE); | |
1335 | ||
1336 | /* ----- HW conf */ | |
1337 | val = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); | |
1338 | if (board->sel15Kres) | |
1339 | val |= HCHWCFG_15KRSEL; | |
1340 | /* Remote wakeup won't work without working clock */ | |
d4d62861 | 1341 | if (board->remote_wakeup_enable) |
4808a1c0 OK |
1342 | val |= HCHWCFG_CLKNOTSTOP; |
1343 | if (board->oc_enable) | |
1344 | val |= HCHWCFG_ANALOG_OC; | |
1345 | if (board->int_act_high) | |
1346 | val |= HCHWCFG_INT_POL; | |
1347 | if (board->int_edge_triggered) | |
1348 | val |= HCHWCFG_INT_TRIGGER; | |
1349 | isp116x_write_reg16(isp116x, HCHWCFG, val); | |
1350 | ||
1351 | /* ----- Root hub conf */ | |
dc5bed09 | 1352 | val = (25 << 24) & RH_A_POTPGT; |
165c0f39 OK |
1353 | /* AN10003_1.pdf recommends RH_A_NPS (no power switching) to |
1354 | be always set. Yet, instead, we request individual port | |
1355 | power switching. */ | |
1356 | val |= RH_A_PSM; | |
9d233d9f OK |
1357 | /* Report overcurrent per port */ |
1358 | val |= RH_A_OCPM; | |
4808a1c0 OK |
1359 | isp116x_write_reg32(isp116x, HCRHDESCA, val); |
1360 | isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA); | |
1361 | ||
1362 | val = RH_B_PPCM; | |
1363 | isp116x_write_reg32(isp116x, HCRHDESCB, val); | |
1364 | isp116x->rhdescb = isp116x_read_reg32(isp116x, HCRHDESCB); | |
1365 | ||
1366 | val = 0; | |
1367 | if (board->remote_wakeup_enable) { | |
704aa0b7 DB |
1368 | if (!device_can_wakeup(hcd->self.controller)) |
1369 | device_init_wakeup(hcd->self.controller, 1); | |
4808a1c0 OK |
1370 | val |= RH_HS_DRWE; |
1371 | } | |
1372 | isp116x_write_reg32(isp116x, HCRHSTATUS, val); | |
1373 | isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS); | |
1374 | ||
1375 | isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf); | |
4808a1c0 | 1376 | |
4808a1c0 OK |
1377 | hcd->state = HC_STATE_RUNNING; |
1378 | ||
4808a1c0 OK |
1379 | /* Set up interrupts */ |
1380 | isp116x->intenb = HCINT_MIE | HCINT_RHSC | HCINT_UE; | |
1381 | if (board->remote_wakeup_enable) | |
1382 | isp116x->intenb |= HCINT_RD; | |
1383 | isp116x->irqenb = HCuPINT_ATL | HCuPINT_OPR; /* | HCuPINT_SUSP; */ | |
1384 | isp116x_write_reg32(isp116x, HCINTENB, isp116x->intenb); | |
1385 | isp116x_write_reg16(isp116x, HCuPINTENB, isp116x->irqenb); | |
1386 | ||
1387 | /* Go operational */ | |
1388 | val = HCCONTROL_USB_OPER; | |
4808a1c0 OK |
1389 | if (board->remote_wakeup_enable) |
1390 | val |= HCCONTROL_RWE; | |
1391 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1392 | ||
1393 | /* Disable ports to avoid race in device enumeration */ | |
1394 | isp116x_write_reg32(isp116x, HCRHPORT1, RH_PS_CCS); | |
1395 | isp116x_write_reg32(isp116x, HCRHPORT2, RH_PS_CCS); | |
1396 | ||
959eea21 | 1397 | isp116x_show_regs_log(isp116x); |
4808a1c0 OK |
1398 | spin_unlock_irqrestore(&isp116x->lock, flags); |
1399 | return 0; | |
1400 | } | |
1401 | ||
959eea21 OK |
1402 | #ifdef CONFIG_PM |
1403 | ||
1404 | static int isp116x_bus_suspend(struct usb_hcd *hcd) | |
1405 | { | |
1406 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1407 | unsigned long flags; | |
1408 | u32 val; | |
1409 | int ret = 0; | |
1410 | ||
1411 | spin_lock_irqsave(&isp116x->lock, flags); | |
959eea21 | 1412 | val = isp116x_read_reg32(isp116x, HCCONTROL); |
0be930c5 | 1413 | |
959eea21 OK |
1414 | switch (val & HCCONTROL_HCFS) { |
1415 | case HCCONTROL_USB_OPER: | |
0be930c5 | 1416 | spin_unlock_irqrestore(&isp116x->lock, flags); |
959eea21 OK |
1417 | val &= (~HCCONTROL_HCFS & ~HCCONTROL_RWE); |
1418 | val |= HCCONTROL_USB_SUSPEND; | |
58a97ffe | 1419 | if (hcd->self.root_hub->do_remote_wakeup) |
959eea21 OK |
1420 | val |= HCCONTROL_RWE; |
1421 | /* Wait for usb transfers to finish */ | |
0be930c5 OK |
1422 | msleep(2); |
1423 | spin_lock_irqsave(&isp116x->lock, flags); | |
959eea21 | 1424 | isp116x_write_reg32(isp116x, HCCONTROL, val); |
0be930c5 | 1425 | spin_unlock_irqrestore(&isp116x->lock, flags); |
959eea21 | 1426 | /* Wait for devices to suspend */ |
0be930c5 | 1427 | msleep(5); |
959eea21 OK |
1428 | break; |
1429 | case HCCONTROL_USB_RESUME: | |
1430 | isp116x_write_reg32(isp116x, HCCONTROL, | |
1431 | (val & ~HCCONTROL_HCFS) | | |
1432 | HCCONTROL_USB_RESET); | |
1433 | case HCCONTROL_USB_RESET: | |
1434 | ret = -EBUSY; | |
0be930c5 OK |
1435 | default: /* HCCONTROL_USB_SUSPEND */ |
1436 | spin_unlock_irqrestore(&isp116x->lock, flags); | |
959eea21 | 1437 | break; |
959eea21 OK |
1438 | } |
1439 | ||
959eea21 OK |
1440 | return ret; |
1441 | } | |
1442 | ||
1443 | static int isp116x_bus_resume(struct usb_hcd *hcd) | |
1444 | { | |
1445 | struct isp116x *isp116x = hcd_to_isp116x(hcd); | |
1446 | u32 val; | |
1447 | ||
1448 | msleep(5); | |
1449 | spin_lock_irq(&isp116x->lock); | |
1450 | ||
1451 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1452 | switch (val & HCCONTROL_HCFS) { | |
1453 | case HCCONTROL_USB_SUSPEND: | |
1454 | val &= ~HCCONTROL_HCFS; | |
1455 | val |= HCCONTROL_USB_RESUME; | |
1456 | isp116x_write_reg32(isp116x, HCCONTROL, val); | |
1457 | case HCCONTROL_USB_RESUME: | |
1458 | break; | |
1459 | case HCCONTROL_USB_OPER: | |
1460 | spin_unlock_irq(&isp116x->lock); | |
959eea21 OK |
1461 | return 0; |
1462 | default: | |
1463 | /* HCCONTROL_USB_RESET: this may happen, when during | |
1464 | suspension the HC lost power. Reinitialize completely */ | |
1465 | spin_unlock_irq(&isp116x->lock); | |
1466 | DBG("Chip has been reset while suspended. Reinit from scratch.\n"); | |
1467 | isp116x_reset(hcd); | |
1468 | isp116x_start(hcd); | |
1469 | isp116x_hub_control(hcd, SetPortFeature, | |
1470 | USB_PORT_FEAT_POWER, 1, NULL, 0); | |
1471 | if ((isp116x->rhdesca & RH_A_NDP) == 2) | |
1472 | isp116x_hub_control(hcd, SetPortFeature, | |
1473 | USB_PORT_FEAT_POWER, 2, NULL, 0); | |
959eea21 OK |
1474 | return 0; |
1475 | } | |
1476 | ||
1477 | val = isp116x->rhdesca & RH_A_NDP; | |
1478 | while (val--) { | |
1479 | u32 stat = | |
1480 | isp116x_read_reg32(isp116x, val ? HCRHPORT2 : HCRHPORT1); | |
1481 | /* force global, not selective, resume */ | |
1482 | if (!(stat & RH_PS_PSS)) | |
1483 | continue; | |
1484 | DBG("%s: Resuming port %d\n", __func__, val); | |
1485 | isp116x_write_reg32(isp116x, RH_PS_POCI, val | |
1486 | ? HCRHPORT2 : HCRHPORT1); | |
1487 | } | |
1488 | spin_unlock_irq(&isp116x->lock); | |
1489 | ||
1490 | hcd->state = HC_STATE_RESUMING; | |
1491 | msleep(20); | |
1492 | ||
1493 | /* Go operational */ | |
1494 | spin_lock_irq(&isp116x->lock); | |
1495 | val = isp116x_read_reg32(isp116x, HCCONTROL); | |
1496 | isp116x_write_reg32(isp116x, HCCONTROL, | |
1497 | (val & ~HCCONTROL_HCFS) | HCCONTROL_USB_OPER); | |
1498 | spin_unlock_irq(&isp116x->lock); | |
959eea21 OK |
1499 | hcd->state = HC_STATE_RUNNING; |
1500 | ||
1501 | return 0; | |
1502 | } | |
1503 | ||
1504 | #else | |
1505 | ||
1506 | #define isp116x_bus_suspend NULL | |
1507 | #define isp116x_bus_resume NULL | |
1508 | ||
1509 | #endif | |
4808a1c0 OK |
1510 | |
1511 | static struct hc_driver isp116x_hc_driver = { | |
1512 | .description = hcd_name, | |
1513 | .product_desc = "ISP116x Host Controller", | |
1514 | .hcd_priv_size = sizeof(struct isp116x), | |
1515 | ||
1516 | .irq = isp116x_irq, | |
1517 | .flags = HCD_USB11, | |
1518 | ||
1519 | .reset = isp116x_reset, | |
1520 | .start = isp116x_start, | |
1521 | .stop = isp116x_stop, | |
1522 | ||
1523 | .urb_enqueue = isp116x_urb_enqueue, | |
1524 | .urb_dequeue = isp116x_urb_dequeue, | |
1525 | .endpoint_disable = isp116x_endpoint_disable, | |
1526 | ||
1527 | .get_frame_number = isp116x_get_frame, | |
1528 | ||
1529 | .hub_status_data = isp116x_hub_status_data, | |
1530 | .hub_control = isp116x_hub_control, | |
0c0382e3 AS |
1531 | .bus_suspend = isp116x_bus_suspend, |
1532 | .bus_resume = isp116x_bus_resume, | |
4808a1c0 OK |
1533 | }; |
1534 | ||
1535 | /*----------------------------------------------------------------*/ | |
1536 | ||
b712548c | 1537 | static int isp116x_remove(struct platform_device *pdev) |
4808a1c0 | 1538 | { |
3ae5eaec | 1539 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
589a0083 | 1540 | struct isp116x *isp116x; |
4808a1c0 OK |
1541 | struct resource *res; |
1542 | ||
9a57116b | 1543 | if (!hcd) |
589a0083 OK |
1544 | return 0; |
1545 | isp116x = hcd_to_isp116x(hcd); | |
4808a1c0 OK |
1546 | remove_debug_file(isp116x); |
1547 | usb_remove_hcd(hcd); | |
1548 | ||
1549 | iounmap(isp116x->data_reg); | |
1550 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1551 | release_mem_region(res->start, 2); | |
1552 | iounmap(isp116x->addr_reg); | |
1553 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1554 | release_mem_region(res->start, 2); | |
1555 | ||
1556 | usb_put_hcd(hcd); | |
1557 | return 0; | |
1558 | } | |
1559 | ||
5bcd70eb | 1560 | static int __devinit isp116x_probe(struct platform_device *pdev) |
4808a1c0 OK |
1561 | { |
1562 | struct usb_hcd *hcd; | |
1563 | struct isp116x *isp116x; | |
27140219 | 1564 | struct resource *addr, *data, *ires; |
4808a1c0 OK |
1565 | void __iomem *addr_reg; |
1566 | void __iomem *data_reg; | |
1567 | int irq; | |
1568 | int ret = 0; | |
27140219 | 1569 | unsigned long irqflags; |
4808a1c0 | 1570 | |
4808a1c0 OK |
1571 | if (pdev->num_resources < 3) { |
1572 | ret = -ENODEV; | |
1573 | goto err1; | |
1574 | } | |
1575 | ||
1576 | data = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1577 | addr = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
27140219 MZ |
1578 | ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
1579 | ||
1580 | if (!addr || !data || !ires) { | |
4808a1c0 OK |
1581 | ret = -ENODEV; |
1582 | goto err1; | |
1583 | } | |
1584 | ||
27140219 MZ |
1585 | irq = ires->start; |
1586 | irqflags = ires->flags & IRQF_TRIGGER_MASK; | |
1587 | ||
3ae5eaec | 1588 | if (pdev->dev.dma_mask) { |
4808a1c0 OK |
1589 | DBG("DMA not supported\n"); |
1590 | ret = -EINVAL; | |
1591 | goto err1; | |
1592 | } | |
1593 | ||
1594 | if (!request_mem_region(addr->start, 2, hcd_name)) { | |
1595 | ret = -EBUSY; | |
1596 | goto err1; | |
1597 | } | |
7a9d93e5 | 1598 | addr_reg = ioremap(addr->start, resource_size(addr)); |
4808a1c0 OK |
1599 | if (addr_reg == NULL) { |
1600 | ret = -ENOMEM; | |
1601 | goto err2; | |
1602 | } | |
1603 | if (!request_mem_region(data->start, 2, hcd_name)) { | |
1604 | ret = -EBUSY; | |
1605 | goto err3; | |
1606 | } | |
7a9d93e5 | 1607 | data_reg = ioremap(data->start, resource_size(data)); |
4808a1c0 OK |
1608 | if (data_reg == NULL) { |
1609 | ret = -ENOMEM; | |
1610 | goto err4; | |
1611 | } | |
1612 | ||
1613 | /* allocate and initialize hcd */ | |
7071a3ce | 1614 | hcd = usb_create_hcd(&isp116x_hc_driver, &pdev->dev, dev_name(&pdev->dev)); |
4808a1c0 OK |
1615 | if (!hcd) { |
1616 | ret = -ENOMEM; | |
1617 | goto err5; | |
1618 | } | |
1619 | /* this rsrc_start is bogus */ | |
1620 | hcd->rsrc_start = addr->start; | |
1621 | isp116x = hcd_to_isp116x(hcd); | |
1622 | isp116x->data_reg = data_reg; | |
1623 | isp116x->addr_reg = addr_reg; | |
1624 | spin_lock_init(&isp116x->lock); | |
1625 | INIT_LIST_HEAD(&isp116x->async); | |
3ae5eaec | 1626 | isp116x->board = pdev->dev.platform_data; |
4808a1c0 OK |
1627 | |
1628 | if (!isp116x->board) { | |
1629 | ERR("Platform data structure not initialized\n"); | |
1630 | ret = -ENODEV; | |
1631 | goto err6; | |
1632 | } | |
1633 | if (isp116x_check_platform_delay(isp116x)) { | |
1634 | ERR("USE_PLATFORM_DELAY defined, but delay function not " | |
1635 | "implemented.\n"); | |
1636 | ERR("See comments in drivers/usb/host/isp116x-hcd.c\n"); | |
1637 | ret = -ENODEV; | |
1638 | goto err6; | |
1639 | } | |
1640 | ||
27140219 | 1641 | ret = usb_add_hcd(hcd, irq, irqflags | IRQF_DISABLED); |
959eea21 | 1642 | if (ret) |
4808a1c0 OK |
1643 | goto err6; |
1644 | ||
959eea21 OK |
1645 | ret = create_debug_file(isp116x); |
1646 | if (ret) { | |
1647 | ERR("Couldn't create debugfs entry\n"); | |
1648 | goto err7; | |
1649 | } | |
1650 | ||
4808a1c0 OK |
1651 | return 0; |
1652 | ||
959eea21 OK |
1653 | err7: |
1654 | usb_remove_hcd(hcd); | |
4808a1c0 OK |
1655 | err6: |
1656 | usb_put_hcd(hcd); | |
1657 | err5: | |
1658 | iounmap(data_reg); | |
1659 | err4: | |
1660 | release_mem_region(data->start, 2); | |
1661 | err3: | |
1662 | iounmap(addr_reg); | |
1663 | err2: | |
1664 | release_mem_region(addr->start, 2); | |
1665 | err1: | |
1666 | ERR("init error, %d\n", ret); | |
1667 | return ret; | |
1668 | } | |
1669 | ||
1670 | #ifdef CONFIG_PM | |
1671 | /* | |
1672 | Suspend of platform device | |
1673 | */ | |
3ae5eaec | 1674 | static int isp116x_suspend(struct platform_device *dev, pm_message_t state) |
4808a1c0 | 1675 | { |
959eea21 | 1676 | VDBG("%s: state %x\n", __func__, state.event); |
959eea21 | 1677 | return 0; |
4808a1c0 OK |
1678 | } |
1679 | ||
1680 | /* | |
1681 | Resume platform device | |
1682 | */ | |
3ae5eaec | 1683 | static int isp116x_resume(struct platform_device *dev) |
4808a1c0 | 1684 | { |
70a1c9e0 | 1685 | VDBG("%s\n", __func__); |
959eea21 | 1686 | return 0; |
4808a1c0 OK |
1687 | } |
1688 | ||
1689 | #else | |
1690 | ||
1691 | #define isp116x_suspend NULL | |
1692 | #define isp116x_resume NULL | |
1693 | ||
1694 | #endif | |
1695 | ||
f4fce61d KS |
1696 | /* work with hotplug and coldplug */ |
1697 | MODULE_ALIAS("platform:isp116x-hcd"); | |
1698 | ||
3ae5eaec | 1699 | static struct platform_driver isp116x_driver = { |
4808a1c0 OK |
1700 | .probe = isp116x_probe, |
1701 | .remove = isp116x_remove, | |
1702 | .suspend = isp116x_suspend, | |
1703 | .resume = isp116x_resume, | |
0be930c5 | 1704 | .driver = { |
f4fce61d KS |
1705 | .name = (char *)hcd_name, |
1706 | .owner = THIS_MODULE, | |
1707 | }, | |
4808a1c0 OK |
1708 | }; |
1709 | ||
1710 | /*-----------------------------------------------------------------*/ | |
1711 | ||
1712 | static int __init isp116x_init(void) | |
1713 | { | |
1714 | if (usb_disabled()) | |
1715 | return -ENODEV; | |
1716 | ||
1717 | INFO("driver %s, %s\n", hcd_name, DRIVER_VERSION); | |
3ae5eaec | 1718 | return platform_driver_register(&isp116x_driver); |
4808a1c0 OK |
1719 | } |
1720 | ||
1721 | module_init(isp116x_init); | |
1722 | ||
1723 | static void __exit isp116x_cleanup(void) | |
1724 | { | |
3ae5eaec | 1725 | platform_driver_unregister(&isp116x_driver); |
4808a1c0 OK |
1726 | } |
1727 | ||
1728 | module_exit(isp116x_cleanup); |