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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[deliverable/linux.git] / drivers / usb / host / isp1362-hcd.c
1 /*
2 * ISP1362 HCD (Host Controller Driver) for USB.
3 *
4 * Copyright (C) 2005 Lothar Wassmann <LW@KARO-electronics.de>
5 *
6 * Derived from the SL811 HCD, rewritten for ISP116x.
7 * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee>
8 *
9 * Portions:
10 * Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
11 * Copyright (C) 2004 David Brownell
12 */
13
14 /*
15 * The ISP1362 chip requires a large delay (300ns and 462ns) between
16 * accesses to the address and data register.
17 * The following timing options exist:
18 *
19 * 1. Configure your memory controller to add such delays if it can (the best)
20 * 2. Implement platform-specific delay function possibly
21 * combined with configuring the memory controller; see
22 * include/linux/usb_isp1362.h for more info.
23 * 3. Use ndelay (easiest, poorest).
24 *
25 * Use the corresponding macros USE_PLATFORM_DELAY and USE_NDELAY in the
26 * platform specific section of isp1362.h to select the appropriate variant.
27 *
28 * Also note that according to the Philips "ISP1362 Errata" document
29 * Rev 1.00 from 27 May data corruption may occur when the #WR signal
30 * is reasserted (even with #CS deasserted) within 132ns after a
31 * write cycle to any controller register. If the hardware doesn't
32 * implement the recommended fix (gating the #WR with #CS) software
33 * must ensure that no further write cycle (not necessarily to the chip!)
34 * is issued by the CPU within this interval.
35
36 * For PXA25x this can be ensured by using VLIO with the maximum
37 * recovery time (MSCx = 0x7f8c) with a memory clock of 99.53 MHz.
38 */
39
40 #ifdef CONFIG_USB_DEBUG
41 # define ISP1362_DEBUG
42 #else
43 # undef ISP1362_DEBUG
44 #endif
45
46 /*
47 * The PXA255 UDC apparently doesn't handle GET_STATUS, GET_CONFIG and
48 * GET_INTERFACE requests correctly when the SETUP and DATA stages of the
49 * requests are carried out in separate frames. This will delay any SETUP
50 * packets until the start of the next frame so that this situation is
51 * unlikely to occur (and makes usbtest happy running with a PXA255 target
52 * device).
53 */
54 #undef BUGGY_PXA2XX_UDC_USBTEST
55
56 #undef PTD_TRACE
57 #undef URB_TRACE
58 #undef VERBOSE
59 #undef REGISTERS
60
61 /* This enables a memory test on the ISP1362 chip memory to make sure the
62 * chip access timing is correct.
63 */
64 #undef CHIP_BUFFER_TEST
65
66 #include <linux/module.h>
67 #include <linux/moduleparam.h>
68 #include <linux/kernel.h>
69 #include <linux/delay.h>
70 #include <linux/ioport.h>
71 #include <linux/sched.h>
72 #include <linux/slab.h>
73 #include <linux/errno.h>
74 #include <linux/init.h>
75 #include <linux/list.h>
76 #include <linux/interrupt.h>
77 #include <linux/usb.h>
78 #include <linux/usb/isp1362.h>
79 #include <linux/usb/hcd.h>
80 #include <linux/platform_device.h>
81 #include <linux/pm.h>
82 #include <linux/io.h>
83 #include <linux/bitmap.h>
84
85 #include <asm/irq.h>
86 #include <asm/system.h>
87 #include <asm/byteorder.h>
88 #include <asm/unaligned.h>
89
90 static int dbg_level;
91 #ifdef ISP1362_DEBUG
92 module_param(dbg_level, int, 0644);
93 #else
94 module_param(dbg_level, int, 0);
95 #define STUB_DEBUG_FILE
96 #endif
97
98 #include "../core/usb.h"
99 #include "isp1362.h"
100
101
102 #define DRIVER_VERSION "2005-04-04"
103 #define DRIVER_DESC "ISP1362 USB Host Controller Driver"
104
105 MODULE_DESCRIPTION(DRIVER_DESC);
106 MODULE_LICENSE("GPL");
107
108 static const char hcd_name[] = "isp1362-hcd";
109
110 static void isp1362_hc_stop(struct usb_hcd *hcd);
111 static int isp1362_hc_start(struct usb_hcd *hcd);
112
113 /*-------------------------------------------------------------------------*/
114
115 /*
116 * When called from the interrupthandler only isp1362_hcd->irqenb is modified,
117 * since the interrupt handler will write isp1362_hcd->irqenb to HCuPINT upon
118 * completion.
119 * We don't need a 'disable' counterpart, since interrupts will be disabled
120 * only by the interrupt handler.
121 */
122 static inline void isp1362_enable_int(struct isp1362_hcd *isp1362_hcd, u16 mask)
123 {
124 if ((isp1362_hcd->irqenb | mask) == isp1362_hcd->irqenb)
125 return;
126 if (mask & ~isp1362_hcd->irqenb)
127 isp1362_write_reg16(isp1362_hcd, HCuPINT, mask & ~isp1362_hcd->irqenb);
128 isp1362_hcd->irqenb |= mask;
129 if (isp1362_hcd->irq_active)
130 return;
131 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb);
132 }
133
134 /*-------------------------------------------------------------------------*/
135
136 static inline struct isp1362_ep_queue *get_ptd_queue(struct isp1362_hcd *isp1362_hcd,
137 u16 offset)
138 {
139 struct isp1362_ep_queue *epq = NULL;
140
141 if (offset < isp1362_hcd->istl_queue[1].buf_start)
142 epq = &isp1362_hcd->istl_queue[0];
143 else if (offset < isp1362_hcd->intl_queue.buf_start)
144 epq = &isp1362_hcd->istl_queue[1];
145 else if (offset < isp1362_hcd->atl_queue.buf_start)
146 epq = &isp1362_hcd->intl_queue;
147 else if (offset < isp1362_hcd->atl_queue.buf_start +
148 isp1362_hcd->atl_queue.buf_size)
149 epq = &isp1362_hcd->atl_queue;
150
151 if (epq)
152 DBG(1, "%s: PTD $%04x is on %s queue\n", __func__, offset, epq->name);
153 else
154 pr_warning("%s: invalid PTD $%04x\n", __func__, offset);
155
156 return epq;
157 }
158
159 static inline int get_ptd_offset(struct isp1362_ep_queue *epq, u8 index)
160 {
161 int offset;
162
163 if (index * epq->blk_size > epq->buf_size) {
164 pr_warning("%s: Bad %s index %d(%d)\n", __func__, epq->name, index,
165 epq->buf_size / epq->blk_size);
166 return -EINVAL;
167 }
168 offset = epq->buf_start + index * epq->blk_size;
169 DBG(3, "%s: %s PTD[%02x] # %04x\n", __func__, epq->name, index, offset);
170
171 return offset;
172 }
173
174 /*-------------------------------------------------------------------------*/
175
176 static inline u16 max_transfer_size(struct isp1362_ep_queue *epq, size_t size,
177 int mps)
178 {
179 u16 xfer_size = min_t(size_t, MAX_XFER_SIZE, size);
180
181 xfer_size = min_t(size_t, xfer_size, epq->buf_avail * epq->blk_size - PTD_HEADER_SIZE);
182 if (xfer_size < size && xfer_size % mps)
183 xfer_size -= xfer_size % mps;
184
185 return xfer_size;
186 }
187
188 static int claim_ptd_buffers(struct isp1362_ep_queue *epq,
189 struct isp1362_ep *ep, u16 len)
190 {
191 int ptd_offset = -EINVAL;
192 int num_ptds = ((len + PTD_HEADER_SIZE - 1) / epq->blk_size) + 1;
193 int found;
194
195 BUG_ON(len > epq->buf_size);
196
197 if (!epq->buf_avail)
198 return -ENOMEM;
199
200 if (ep->num_ptds)
201 pr_err("%s: %s len %d/%d num_ptds %d buf_map %08lx skip_map %08lx\n", __func__,
202 epq->name, len, epq->blk_size, num_ptds, epq->buf_map, epq->skip_map);
203 BUG_ON(ep->num_ptds != 0);
204
205 found = bitmap_find_next_zero_area(&epq->buf_map, epq->buf_count, 0,
206 num_ptds, 0);
207 if (found >= epq->buf_count)
208 return -EOVERFLOW;
209
210 DBG(1, "%s: Found %d PTDs[%d] for %d/%d byte\n", __func__,
211 num_ptds, found, len, (int)(epq->blk_size - PTD_HEADER_SIZE));
212 ptd_offset = get_ptd_offset(epq, found);
213 WARN_ON(ptd_offset < 0);
214 ep->ptd_offset = ptd_offset;
215 ep->num_ptds += num_ptds;
216 epq->buf_avail -= num_ptds;
217 BUG_ON(epq->buf_avail > epq->buf_count);
218 ep->ptd_index = found;
219 bitmap_set(&epq->buf_map, found, num_ptds);
220 DBG(1, "%s: Done %s PTD[%d] $%04x, avail %d count %d claimed %d %08lx:%08lx\n",
221 __func__, epq->name, ep->ptd_index, ep->ptd_offset,
222 epq->buf_avail, epq->buf_count, num_ptds, epq->buf_map, epq->skip_map);
223
224 return found;
225 }
226
227 static inline void release_ptd_buffers(struct isp1362_ep_queue *epq, struct isp1362_ep *ep)
228 {
229 int index = ep->ptd_index;
230 int last = ep->ptd_index + ep->num_ptds;
231
232 if (last > epq->buf_count)
233 pr_err("%s: ep %p req %d len %d %s PTD[%d] $%04x num_ptds %d buf_count %d buf_avail %d buf_map %08lx skip_map %08lx\n",
234 __func__, ep, ep->num_req, ep->length, epq->name, ep->ptd_index,
235 ep->ptd_offset, ep->num_ptds, epq->buf_count, epq->buf_avail,
236 epq->buf_map, epq->skip_map);
237 BUG_ON(last > epq->buf_count);
238
239 for (; index < last; index++) {
240 __clear_bit(index, &epq->buf_map);
241 __set_bit(index, &epq->skip_map);
242 }
243 epq->buf_avail += ep->num_ptds;
244 epq->ptd_count--;
245
246 BUG_ON(epq->buf_avail > epq->buf_count);
247 BUG_ON(epq->ptd_count > epq->buf_count);
248
249 DBG(1, "%s: Done %s PTDs $%04x released %d avail %d count %d\n",
250 __func__, epq->name,
251 ep->ptd_offset, ep->num_ptds, epq->buf_avail, epq->buf_count);
252 DBG(1, "%s: buf_map %08lx skip_map %08lx\n", __func__,
253 epq->buf_map, epq->skip_map);
254
255 ep->num_ptds = 0;
256 ep->ptd_offset = -EINVAL;
257 ep->ptd_index = -EINVAL;
258 }
259
260 /*-------------------------------------------------------------------------*/
261
262 /*
263 Set up PTD's.
264 */
265 static void prepare_ptd(struct isp1362_hcd *isp1362_hcd, struct urb *urb,
266 struct isp1362_ep *ep, struct isp1362_ep_queue *epq,
267 u16 fno)
268 {
269 struct ptd *ptd;
270 int toggle;
271 int dir;
272 u16 len;
273 size_t buf_len = urb->transfer_buffer_length - urb->actual_length;
274
275 DBG(3, "%s: %s ep %p\n", __func__, epq->name, ep);
276
277 ptd = &ep->ptd;
278
279 ep->data = (unsigned char *)urb->transfer_buffer + urb->actual_length;
280
281 switch (ep->nextpid) {
282 case USB_PID_IN:
283 toggle = usb_gettoggle(urb->dev, ep->epnum, 0);
284 dir = PTD_DIR_IN;
285 if (usb_pipecontrol(urb->pipe)) {
286 len = min_t(size_t, ep->maxpacket, buf_len);
287 } else if (usb_pipeisoc(urb->pipe)) {
288 len = min_t(size_t, urb->iso_frame_desc[fno].length, MAX_XFER_SIZE);
289 ep->data = urb->transfer_buffer + urb->iso_frame_desc[fno].offset;
290 } else
291 len = max_transfer_size(epq, buf_len, ep->maxpacket);
292 DBG(1, "%s: IN len %d/%d/%d from URB\n", __func__, len, ep->maxpacket,
293 (int)buf_len);
294 break;
295 case USB_PID_OUT:
296 toggle = usb_gettoggle(urb->dev, ep->epnum, 1);
297 dir = PTD_DIR_OUT;
298 if (usb_pipecontrol(urb->pipe))
299 len = min_t(size_t, ep->maxpacket, buf_len);
300 else if (usb_pipeisoc(urb->pipe))
301 len = min_t(size_t, urb->iso_frame_desc[0].length, MAX_XFER_SIZE);
302 else
303 len = max_transfer_size(epq, buf_len, ep->maxpacket);
304 if (len == 0)
305 pr_info("%s: Sending ZERO packet: %d\n", __func__,
306 urb->transfer_flags & URB_ZERO_PACKET);
307 DBG(1, "%s: OUT len %d/%d/%d from URB\n", __func__, len, ep->maxpacket,
308 (int)buf_len);
309 break;
310 case USB_PID_SETUP:
311 toggle = 0;
312 dir = PTD_DIR_SETUP;
313 len = sizeof(struct usb_ctrlrequest);
314 DBG(1, "%s: SETUP len %d\n", __func__, len);
315 ep->data = urb->setup_packet;
316 break;
317 case USB_PID_ACK:
318 toggle = 1;
319 len = 0;
320 dir = (urb->transfer_buffer_length && usb_pipein(urb->pipe)) ?
321 PTD_DIR_OUT : PTD_DIR_IN;
322 DBG(1, "%s: ACK len %d\n", __func__, len);
323 break;
324 default:
325 toggle = dir = len = 0;
326 pr_err("%s@%d: ep->nextpid %02x\n", __func__, __LINE__, ep->nextpid);
327 BUG_ON(1);
328 }
329
330 ep->length = len;
331 if (!len)
332 ep->data = NULL;
333
334 ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle);
335 ptd->mps = PTD_MPS(ep->maxpacket) | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) |
336 PTD_EP(ep->epnum);
337 ptd->len = PTD_LEN(len) | PTD_DIR(dir);
338 ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe));
339
340 if (usb_pipeint(urb->pipe)) {
341 ptd->faddr |= PTD_SF_INT(ep->branch);
342 ptd->faddr |= PTD_PR(ep->interval ? __ffs(ep->interval) : 0);
343 }
344 if (usb_pipeisoc(urb->pipe))
345 ptd->faddr |= PTD_SF_ISO(fno);
346
347 DBG(1, "%s: Finished\n", __func__);
348 }
349
350 static void isp1362_write_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep,
351 struct isp1362_ep_queue *epq)
352 {
353 struct ptd *ptd = &ep->ptd;
354 int len = PTD_GET_DIR(ptd) == PTD_DIR_IN ? 0 : ep->length;
355
356 _BUG_ON(ep->ptd_offset < 0);
357
358 prefetch(ptd);
359 isp1362_write_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE);
360 if (len)
361 isp1362_write_buffer(isp1362_hcd, ep->data,
362 ep->ptd_offset + PTD_HEADER_SIZE, len);
363
364 dump_ptd(ptd);
365 dump_ptd_out_data(ptd, ep->data);
366 }
367
368 static void isp1362_read_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep,
369 struct isp1362_ep_queue *epq)
370 {
371 struct ptd *ptd = &ep->ptd;
372 int act_len;
373
374 WARN_ON(list_empty(&ep->active));
375 BUG_ON(ep->ptd_offset < 0);
376
377 list_del_init(&ep->active);
378 DBG(1, "%s: ep %p removed from active list %p\n", __func__, ep, &epq->active);
379
380 prefetchw(ptd);
381 isp1362_read_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE);
382 dump_ptd(ptd);
383 act_len = PTD_GET_COUNT(ptd);
384 if (PTD_GET_DIR(ptd) != PTD_DIR_IN || act_len == 0)
385 return;
386 if (act_len > ep->length)
387 pr_err("%s: ep %p PTD $%04x act_len %d ep->length %d\n", __func__, ep,
388 ep->ptd_offset, act_len, ep->length);
389 BUG_ON(act_len > ep->length);
390 /* Only transfer the amount of data that has actually been overwritten
391 * in the chip buffer. We don't want any data that doesn't belong to the
392 * transfer to leak out of the chip to the callers transfer buffer!
393 */
394 prefetchw(ep->data);
395 isp1362_read_buffer(isp1362_hcd, ep->data,
396 ep->ptd_offset + PTD_HEADER_SIZE, act_len);
397 dump_ptd_in_data(ptd, ep->data);
398 }
399
400 /*
401 * INT PTDs will stay in the chip until data is available.
402 * This function will remove a PTD from the chip when the URB is dequeued.
403 * Must be called with the spinlock held and IRQs disabled
404 */
405 static void remove_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep)
406
407 {
408 int index;
409 struct isp1362_ep_queue *epq;
410
411 DBG(1, "%s: ep %p PTD[%d] $%04x\n", __func__, ep, ep->ptd_index, ep->ptd_offset);
412 BUG_ON(ep->ptd_offset < 0);
413
414 epq = get_ptd_queue(isp1362_hcd, ep->ptd_offset);
415 BUG_ON(!epq);
416
417 /* put ep in remove_list for cleanup */
418 WARN_ON(!list_empty(&ep->remove_list));
419 list_add_tail(&ep->remove_list, &isp1362_hcd->remove_list);
420 /* let SOF interrupt handle the cleanup */
421 isp1362_enable_int(isp1362_hcd, HCuPINT_SOF);
422
423 index = ep->ptd_index;
424 if (index < 0)
425 /* ISO queues don't have SKIP registers */
426 return;
427
428 DBG(1, "%s: Disabling PTD[%02x] $%04x %08lx|%08x\n", __func__,
429 index, ep->ptd_offset, epq->skip_map, 1 << index);
430
431 /* prevent further processing of PTD (will be effective after next SOF) */
432 epq->skip_map |= 1 << index;
433 if (epq == &isp1362_hcd->atl_queue) {
434 DBG(2, "%s: ATLSKIP = %08x -> %08lx\n", __func__,
435 isp1362_read_reg32(isp1362_hcd, HCATLSKIP), epq->skip_map);
436 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, epq->skip_map);
437 if (~epq->skip_map == 0)
438 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE);
439 } else if (epq == &isp1362_hcd->intl_queue) {
440 DBG(2, "%s: INTLSKIP = %08x -> %08lx\n", __func__,
441 isp1362_read_reg32(isp1362_hcd, HCINTLSKIP), epq->skip_map);
442 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, epq->skip_map);
443 if (~epq->skip_map == 0)
444 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE);
445 }
446 }
447
448 /*
449 Take done or failed requests out of schedule. Give back
450 processed urbs.
451 */
452 static void finish_request(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep,
453 struct urb *urb, int status)
454 __releases(isp1362_hcd->lock)
455 __acquires(isp1362_hcd->lock)
456 {
457 urb->hcpriv = NULL;
458 ep->error_count = 0;
459
460 if (usb_pipecontrol(urb->pipe))
461 ep->nextpid = USB_PID_SETUP;
462
463 URB_DBG("%s: req %d FA %d ep%d%s %s: len %d/%d %s stat %d\n", __func__,
464 ep->num_req, usb_pipedevice(urb->pipe),
465 usb_pipeendpoint(urb->pipe),
466 !usb_pipein(urb->pipe) ? "out" : "in",
467 usb_pipecontrol(urb->pipe) ? "ctrl" :
468 usb_pipeint(urb->pipe) ? "int" :
469 usb_pipebulk(urb->pipe) ? "bulk" :
470 "iso",
471 urb->actual_length, urb->transfer_buffer_length,
472 !(urb->transfer_flags & URB_SHORT_NOT_OK) ?
473 "short_ok" : "", urb->status);
474
475
476 usb_hcd_unlink_urb_from_ep(isp1362_hcd_to_hcd(isp1362_hcd), urb);
477 spin_unlock(&isp1362_hcd->lock);
478 usb_hcd_giveback_urb(isp1362_hcd_to_hcd(isp1362_hcd), urb, status);
479 spin_lock(&isp1362_hcd->lock);
480
481 /* take idle endpoints out of the schedule right away */
482 if (!list_empty(&ep->hep->urb_list))
483 return;
484
485 /* async deschedule */
486 if (!list_empty(&ep->schedule)) {
487 list_del_init(&ep->schedule);
488 return;
489 }
490
491
492 if (ep->interval) {
493 /* periodic deschedule */
494 DBG(1, "deschedule qh%d/%p branch %d load %d bandwidth %d -> %d\n", ep->interval,
495 ep, ep->branch, ep->load,
496 isp1362_hcd->load[ep->branch],
497 isp1362_hcd->load[ep->branch] - ep->load);
498 isp1362_hcd->load[ep->branch] -= ep->load;
499 ep->branch = PERIODIC_SIZE;
500 }
501 }
502
503 /*
504 * Analyze transfer results, handle partial transfers and errors
505 */
506 static void postproc_ep(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep)
507 {
508 struct urb *urb = get_urb(ep);
509 struct usb_device *udev;
510 struct ptd *ptd;
511 int short_ok;
512 u16 len;
513 int urbstat = -EINPROGRESS;
514 u8 cc;
515
516 DBG(2, "%s: ep %p req %d\n", __func__, ep, ep->num_req);
517
518 udev = urb->dev;
519 ptd = &ep->ptd;
520 cc = PTD_GET_CC(ptd);
521 if (cc == PTD_NOTACCESSED) {
522 pr_err("%s: req %d PTD %p Untouched by ISP1362\n", __func__,
523 ep->num_req, ptd);
524 cc = PTD_DEVNOTRESP;
525 }
526
527 short_ok = !(urb->transfer_flags & URB_SHORT_NOT_OK);
528 len = urb->transfer_buffer_length - urb->actual_length;
529
530 /* Data underrun is special. For allowed underrun
531 we clear the error and continue as normal. For
532 forbidden underrun we finish the DATA stage
533 immediately while for control transfer,
534 we do a STATUS stage.
535 */
536 if (cc == PTD_DATAUNDERRUN) {
537 if (short_ok) {
538 DBG(1, "%s: req %d Allowed data underrun short_%sok %d/%d/%d byte\n",
539 __func__, ep->num_req, short_ok ? "" : "not_",
540 PTD_GET_COUNT(ptd), ep->maxpacket, len);
541 cc = PTD_CC_NOERROR;
542 urbstat = 0;
543 } else {
544 DBG(1, "%s: req %d Data Underrun %s nextpid %02x short_%sok %d/%d/%d byte\n",
545 __func__, ep->num_req,
546 usb_pipein(urb->pipe) ? "IN" : "OUT", ep->nextpid,
547 short_ok ? "" : "not_",
548 PTD_GET_COUNT(ptd), ep->maxpacket, len);
549 if (usb_pipecontrol(urb->pipe)) {
550 ep->nextpid = USB_PID_ACK;
551 /* save the data underrun error code for later and
552 * procede with the status stage
553 */
554 urb->actual_length += PTD_GET_COUNT(ptd);
555 BUG_ON(urb->actual_length > urb->transfer_buffer_length);
556
557 if (urb->status == -EINPROGRESS)
558 urb->status = cc_to_error[PTD_DATAUNDERRUN];
559 } else {
560 usb_settoggle(udev, ep->epnum, ep->nextpid == USB_PID_OUT,
561 PTD_GET_TOGGLE(ptd));
562 urbstat = cc_to_error[PTD_DATAUNDERRUN];
563 }
564 goto out;
565 }
566 }
567
568 if (cc != PTD_CC_NOERROR) {
569 if (++ep->error_count >= 3 || cc == PTD_CC_STALL || cc == PTD_DATAOVERRUN) {
570 urbstat = cc_to_error[cc];
571 DBG(1, "%s: req %d nextpid %02x, status %d, error %d, error_count %d\n",
572 __func__, ep->num_req, ep->nextpid, urbstat, cc,
573 ep->error_count);
574 }
575 goto out;
576 }
577
578 switch (ep->nextpid) {
579 case USB_PID_OUT:
580 if (PTD_GET_COUNT(ptd) != ep->length)
581 pr_err("%s: count=%d len=%d\n", __func__,
582 PTD_GET_COUNT(ptd), ep->length);
583 BUG_ON(PTD_GET_COUNT(ptd) != ep->length);
584 urb->actual_length += ep->length;
585 BUG_ON(urb->actual_length > urb->transfer_buffer_length);
586 usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd));
587 if (urb->actual_length == urb->transfer_buffer_length) {
588 DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__,
589 ep->num_req, len, ep->maxpacket, urbstat);
590 if (usb_pipecontrol(urb->pipe)) {
591 DBG(3, "%s: req %d %s Wait for ACK\n", __func__,
592 ep->num_req,
593 usb_pipein(urb->pipe) ? "IN" : "OUT");
594 ep->nextpid = USB_PID_ACK;
595 } else {
596 if (len % ep->maxpacket ||
597 !(urb->transfer_flags & URB_ZERO_PACKET)) {
598 urbstat = 0;
599 DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n",
600 __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT",
601 urbstat, len, ep->maxpacket, urb->actual_length);
602 }
603 }
604 }
605 break;
606 case USB_PID_IN:
607 len = PTD_GET_COUNT(ptd);
608 BUG_ON(len > ep->length);
609 urb->actual_length += len;
610 BUG_ON(urb->actual_length > urb->transfer_buffer_length);
611 usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd));
612 /* if transfer completed or (allowed) data underrun */
613 if ((urb->transfer_buffer_length == urb->actual_length) ||
614 len % ep->maxpacket) {
615 DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__,
616 ep->num_req, len, ep->maxpacket, urbstat);
617 if (usb_pipecontrol(urb->pipe)) {
618 DBG(3, "%s: req %d %s Wait for ACK\n", __func__,
619 ep->num_req,
620 usb_pipein(urb->pipe) ? "IN" : "OUT");
621 ep->nextpid = USB_PID_ACK;
622 } else {
623 urbstat = 0;
624 DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n",
625 __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT",
626 urbstat, len, ep->maxpacket, urb->actual_length);
627 }
628 }
629 break;
630 case USB_PID_SETUP:
631 if (urb->transfer_buffer_length == urb->actual_length) {
632 ep->nextpid = USB_PID_ACK;
633 } else if (usb_pipeout(urb->pipe)) {
634 usb_settoggle(udev, 0, 1, 1);
635 ep->nextpid = USB_PID_OUT;
636 } else {
637 usb_settoggle(udev, 0, 0, 1);
638 ep->nextpid = USB_PID_IN;
639 }
640 break;
641 case USB_PID_ACK:
642 DBG(3, "%s: req %d got ACK %d -> 0\n", __func__, ep->num_req,
643 urbstat);
644 WARN_ON(urbstat != -EINPROGRESS);
645 urbstat = 0;
646 ep->nextpid = 0;
647 break;
648 default:
649 BUG_ON(1);
650 }
651
652 out:
653 if (urbstat != -EINPROGRESS) {
654 DBG(2, "%s: Finishing ep %p req %d urb %p status %d\n", __func__,
655 ep, ep->num_req, urb, urbstat);
656 finish_request(isp1362_hcd, ep, urb, urbstat);
657 }
658 }
659
660 static void finish_unlinks(struct isp1362_hcd *isp1362_hcd)
661 {
662 struct isp1362_ep *ep;
663 struct isp1362_ep *tmp;
664
665 list_for_each_entry_safe(ep, tmp, &isp1362_hcd->remove_list, remove_list) {
666 struct isp1362_ep_queue *epq =
667 get_ptd_queue(isp1362_hcd, ep->ptd_offset);
668 int index = ep->ptd_index;
669
670 BUG_ON(epq == NULL);
671 if (index >= 0) {
672 DBG(1, "%s: remove PTD[%d] $%04x\n", __func__, index, ep->ptd_offset);
673 BUG_ON(ep->num_ptds == 0);
674 release_ptd_buffers(epq, ep);
675 }
676 if (!list_empty(&ep->hep->urb_list)) {
677 struct urb *urb = get_urb(ep);
678
679 DBG(1, "%s: Finishing req %d ep %p from remove_list\n", __func__,
680 ep->num_req, ep);
681 finish_request(isp1362_hcd, ep, urb, -ESHUTDOWN);
682 }
683 WARN_ON(list_empty(&ep->active));
684 if (!list_empty(&ep->active)) {
685 list_del_init(&ep->active);
686 DBG(1, "%s: ep %p removed from active list\n", __func__, ep);
687 }
688 list_del_init(&ep->remove_list);
689 DBG(1, "%s: ep %p removed from remove_list\n", __func__, ep);
690 }
691 DBG(1, "%s: Done\n", __func__);
692 }
693
694 static inline void enable_atl_transfers(struct isp1362_hcd *isp1362_hcd, int count)
695 {
696 if (count > 0) {
697 if (count < isp1362_hcd->atl_queue.ptd_count)
698 isp1362_write_reg16(isp1362_hcd, HCATLDTC, count);
699 isp1362_enable_int(isp1362_hcd, HCuPINT_ATL);
700 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, isp1362_hcd->atl_queue.skip_map);
701 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE);
702 } else
703 isp1362_enable_int(isp1362_hcd, HCuPINT_SOF);
704 }
705
706 static inline void enable_intl_transfers(struct isp1362_hcd *isp1362_hcd)
707 {
708 isp1362_enable_int(isp1362_hcd, HCuPINT_INTL);
709 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE);
710 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, isp1362_hcd->intl_queue.skip_map);
711 }
712
713 static inline void enable_istl_transfers(struct isp1362_hcd *isp1362_hcd, int flip)
714 {
715 isp1362_enable_int(isp1362_hcd, flip ? HCuPINT_ISTL1 : HCuPINT_ISTL0);
716 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, flip ?
717 HCBUFSTAT_ISTL1_FULL : HCBUFSTAT_ISTL0_FULL);
718 }
719
720 static int submit_req(struct isp1362_hcd *isp1362_hcd, struct urb *urb,
721 struct isp1362_ep *ep, struct isp1362_ep_queue *epq)
722 {
723 int index = epq->free_ptd;
724
725 prepare_ptd(isp1362_hcd, urb, ep, epq, 0);
726 index = claim_ptd_buffers(epq, ep, ep->length);
727 if (index == -ENOMEM) {
728 DBG(1, "%s: req %d No free %s PTD available: %d, %08lx:%08lx\n", __func__,
729 ep->num_req, epq->name, ep->num_ptds, epq->buf_map, epq->skip_map);
730 return index;
731 } else if (index == -EOVERFLOW) {
732 DBG(1, "%s: req %d Not enough space for %d byte %s PTD %d %08lx:%08lx\n",
733 __func__, ep->num_req, ep->length, epq->name, ep->num_ptds,
734 epq->buf_map, epq->skip_map);
735 return index;
736 } else
737 BUG_ON(index < 0);
738 list_add_tail(&ep->active, &epq->active);
739 DBG(1, "%s: ep %p req %d len %d added to active list %p\n", __func__,
740 ep, ep->num_req, ep->length, &epq->active);
741 DBG(1, "%s: Submitting %s PTD $%04x for ep %p req %d\n", __func__, epq->name,
742 ep->ptd_offset, ep, ep->num_req);
743 isp1362_write_ptd(isp1362_hcd, ep, epq);
744 __clear_bit(ep->ptd_index, &epq->skip_map);
745
746 return 0;
747 }
748
749 static void start_atl_transfers(struct isp1362_hcd *isp1362_hcd)
750 {
751 int ptd_count = 0;
752 struct isp1362_ep_queue *epq = &isp1362_hcd->atl_queue;
753 struct isp1362_ep *ep;
754 int defer = 0;
755
756 if (atomic_read(&epq->finishing)) {
757 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name);
758 return;
759 }
760
761 list_for_each_entry(ep, &isp1362_hcd->async, schedule) {
762 struct urb *urb = get_urb(ep);
763 int ret;
764
765 if (!list_empty(&ep->active)) {
766 DBG(2, "%s: Skipping active %s ep %p\n", __func__, epq->name, ep);
767 continue;
768 }
769
770 DBG(1, "%s: Processing %s ep %p req %d\n", __func__, epq->name,
771 ep, ep->num_req);
772
773 ret = submit_req(isp1362_hcd, urb, ep, epq);
774 if (ret == -ENOMEM) {
775 defer = 1;
776 break;
777 } else if (ret == -EOVERFLOW) {
778 defer = 1;
779 continue;
780 }
781 #ifdef BUGGY_PXA2XX_UDC_USBTEST
782 defer = ep->nextpid == USB_PID_SETUP;
783 #endif
784 ptd_count++;
785 }
786
787 /* Avoid starving of endpoints */
788 if (isp1362_hcd->async.next != isp1362_hcd->async.prev) {
789 DBG(2, "%s: Cycling ASYNC schedule %d\n", __func__, ptd_count);
790 list_move(&isp1362_hcd->async, isp1362_hcd->async.next);
791 }
792 if (ptd_count || defer)
793 enable_atl_transfers(isp1362_hcd, defer ? 0 : ptd_count);
794
795 epq->ptd_count += ptd_count;
796 if (epq->ptd_count > epq->stat_maxptds) {
797 epq->stat_maxptds = epq->ptd_count;
798 DBG(0, "%s: max_ptds: %d\n", __func__, epq->stat_maxptds);
799 }
800 }
801
802 static void start_intl_transfers(struct isp1362_hcd *isp1362_hcd)
803 {
804 int ptd_count = 0;
805 struct isp1362_ep_queue *epq = &isp1362_hcd->intl_queue;
806 struct isp1362_ep *ep;
807
808 if (atomic_read(&epq->finishing)) {
809 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name);
810 return;
811 }
812
813 list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) {
814 struct urb *urb = get_urb(ep);
815 int ret;
816
817 if (!list_empty(&ep->active)) {
818 DBG(1, "%s: Skipping active %s ep %p\n", __func__,
819 epq->name, ep);
820 continue;
821 }
822
823 DBG(1, "%s: Processing %s ep %p req %d\n", __func__,
824 epq->name, ep, ep->num_req);
825 ret = submit_req(isp1362_hcd, urb, ep, epq);
826 if (ret == -ENOMEM)
827 break;
828 else if (ret == -EOVERFLOW)
829 continue;
830 ptd_count++;
831 }
832
833 if (ptd_count) {
834 static int last_count;
835
836 if (ptd_count != last_count) {
837 DBG(0, "%s: ptd_count: %d\n", __func__, ptd_count);
838 last_count = ptd_count;
839 }
840 enable_intl_transfers(isp1362_hcd);
841 }
842
843 epq->ptd_count += ptd_count;
844 if (epq->ptd_count > epq->stat_maxptds)
845 epq->stat_maxptds = epq->ptd_count;
846 }
847
848 static inline int next_ptd(struct isp1362_ep_queue *epq, struct isp1362_ep *ep)
849 {
850 u16 ptd_offset = ep->ptd_offset;
851 int num_ptds = (ep->length + PTD_HEADER_SIZE + (epq->blk_size - 1)) / epq->blk_size;
852
853 DBG(2, "%s: PTD offset $%04x + %04x => %d * %04x -> $%04x\n", __func__, ptd_offset,
854 ep->length, num_ptds, epq->blk_size, ptd_offset + num_ptds * epq->blk_size);
855
856 ptd_offset += num_ptds * epq->blk_size;
857 if (ptd_offset < epq->buf_start + epq->buf_size)
858 return ptd_offset;
859 else
860 return -ENOMEM;
861 }
862
863 static void start_iso_transfers(struct isp1362_hcd *isp1362_hcd)
864 {
865 int ptd_count = 0;
866 int flip = isp1362_hcd->istl_flip;
867 struct isp1362_ep_queue *epq;
868 int ptd_offset;
869 struct isp1362_ep *ep;
870 struct isp1362_ep *tmp;
871 u16 fno = isp1362_read_reg32(isp1362_hcd, HCFMNUM);
872
873 fill2:
874 epq = &isp1362_hcd->istl_queue[flip];
875 if (atomic_read(&epq->finishing)) {
876 DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name);
877 return;
878 }
879
880 if (!list_empty(&epq->active))
881 return;
882
883 ptd_offset = epq->buf_start;
884 list_for_each_entry_safe(ep, tmp, &isp1362_hcd->isoc, schedule) {
885 struct urb *urb = get_urb(ep);
886 s16 diff = fno - (u16)urb->start_frame;
887
888 DBG(1, "%s: Processing %s ep %p\n", __func__, epq->name, ep);
889
890 if (diff > urb->number_of_packets) {
891 /* time frame for this URB has elapsed */
892 finish_request(isp1362_hcd, ep, urb, -EOVERFLOW);
893 continue;
894 } else if (diff < -1) {
895 /* URB is not due in this frame or the next one.
896 * Comparing with '-1' instead of '0' accounts for double
897 * buffering in the ISP1362 which enables us to queue the PTD
898 * one frame ahead of time
899 */
900 } else if (diff == -1) {
901 /* submit PTD's that are due in the next frame */
902 prepare_ptd(isp1362_hcd, urb, ep, epq, fno);
903 if (ptd_offset + PTD_HEADER_SIZE + ep->length >
904 epq->buf_start + epq->buf_size) {
905 pr_err("%s: Not enough ISO buffer space for %d byte PTD\n",
906 __func__, ep->length);
907 continue;
908 }
909 ep->ptd_offset = ptd_offset;
910 list_add_tail(&ep->active, &epq->active);
911
912 ptd_offset = next_ptd(epq, ep);
913 if (ptd_offset < 0) {
914 pr_warning("%s: req %d No more %s PTD buffers available\n", __func__,
915 ep->num_req, epq->name);
916 break;
917 }
918 }
919 }
920 list_for_each_entry(ep, &epq->active, active) {
921 if (epq->active.next == &ep->active)
922 ep->ptd.mps |= PTD_LAST_MSK;
923 isp1362_write_ptd(isp1362_hcd, ep, epq);
924 ptd_count++;
925 }
926
927 if (ptd_count)
928 enable_istl_transfers(isp1362_hcd, flip);
929
930 epq->ptd_count += ptd_count;
931 if (epq->ptd_count > epq->stat_maxptds)
932 epq->stat_maxptds = epq->ptd_count;
933
934 /* check, whether the second ISTL buffer may also be filled */
935 if (!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) &
936 (flip ? HCBUFSTAT_ISTL0_FULL : HCBUFSTAT_ISTL1_FULL))) {
937 fno++;
938 ptd_count = 0;
939 flip = 1 - flip;
940 goto fill2;
941 }
942 }
943
944 static void finish_transfers(struct isp1362_hcd *isp1362_hcd, unsigned long done_map,
945 struct isp1362_ep_queue *epq)
946 {
947 struct isp1362_ep *ep;
948 struct isp1362_ep *tmp;
949
950 if (list_empty(&epq->active)) {
951 DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name);
952 return;
953 }
954
955 DBG(1, "%s: Finishing %s transfers %08lx\n", __func__, epq->name, done_map);
956
957 atomic_inc(&epq->finishing);
958 list_for_each_entry_safe(ep, tmp, &epq->active, active) {
959 int index = ep->ptd_index;
960
961 DBG(1, "%s: Checking %s PTD[%02x] $%04x\n", __func__, epq->name,
962 index, ep->ptd_offset);
963
964 BUG_ON(index < 0);
965 if (__test_and_clear_bit(index, &done_map)) {
966 isp1362_read_ptd(isp1362_hcd, ep, epq);
967 epq->free_ptd = index;
968 BUG_ON(ep->num_ptds == 0);
969 release_ptd_buffers(epq, ep);
970
971 DBG(1, "%s: ep %p req %d removed from active list\n", __func__,
972 ep, ep->num_req);
973 if (!list_empty(&ep->remove_list)) {
974 list_del_init(&ep->remove_list);
975 DBG(1, "%s: ep %p removed from remove list\n", __func__, ep);
976 }
977 DBG(1, "%s: Postprocessing %s ep %p req %d\n", __func__, epq->name,
978 ep, ep->num_req);
979 postproc_ep(isp1362_hcd, ep);
980 }
981 if (!done_map)
982 break;
983 }
984 if (done_map)
985 pr_warning("%s: done_map not clear: %08lx:%08lx\n", __func__, done_map,
986 epq->skip_map);
987 atomic_dec(&epq->finishing);
988 }
989
990 static void finish_iso_transfers(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep_queue *epq)
991 {
992 struct isp1362_ep *ep;
993 struct isp1362_ep *tmp;
994
995 if (list_empty(&epq->active)) {
996 DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name);
997 return;
998 }
999
1000 DBG(1, "%s: Finishing %s transfers\n", __func__, epq->name);
1001
1002 atomic_inc(&epq->finishing);
1003 list_for_each_entry_safe(ep, tmp, &epq->active, active) {
1004 DBG(1, "%s: Checking PTD $%04x\n", __func__, ep->ptd_offset);
1005
1006 isp1362_read_ptd(isp1362_hcd, ep, epq);
1007 DBG(1, "%s: Postprocessing %s ep %p\n", __func__, epq->name, ep);
1008 postproc_ep(isp1362_hcd, ep);
1009 }
1010 WARN_ON(epq->blk_size != 0);
1011 atomic_dec(&epq->finishing);
1012 }
1013
1014 static irqreturn_t isp1362_irq(struct usb_hcd *hcd)
1015 {
1016 int handled = 0;
1017 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
1018 u16 irqstat;
1019 u16 svc_mask;
1020
1021 spin_lock(&isp1362_hcd->lock);
1022
1023 BUG_ON(isp1362_hcd->irq_active++);
1024
1025 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0);
1026
1027 irqstat = isp1362_read_reg16(isp1362_hcd, HCuPINT);
1028 DBG(3, "%s: got IRQ %04x:%04x\n", __func__, irqstat, isp1362_hcd->irqenb);
1029
1030 /* only handle interrupts that are currently enabled */
1031 irqstat &= isp1362_hcd->irqenb;
1032 isp1362_write_reg16(isp1362_hcd, HCuPINT, irqstat);
1033 svc_mask = irqstat;
1034
1035 if (irqstat & HCuPINT_SOF) {
1036 isp1362_hcd->irqenb &= ~HCuPINT_SOF;
1037 isp1362_hcd->irq_stat[ISP1362_INT_SOF]++;
1038 handled = 1;
1039 svc_mask &= ~HCuPINT_SOF;
1040 DBG(3, "%s: SOF\n", __func__);
1041 isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM);
1042 if (!list_empty(&isp1362_hcd->remove_list))
1043 finish_unlinks(isp1362_hcd);
1044 if (!list_empty(&isp1362_hcd->async) && !(irqstat & HCuPINT_ATL)) {
1045 if (list_empty(&isp1362_hcd->atl_queue.active)) {
1046 start_atl_transfers(isp1362_hcd);
1047 } else {
1048 isp1362_enable_int(isp1362_hcd, HCuPINT_ATL);
1049 isp1362_write_reg32(isp1362_hcd, HCATLSKIP,
1050 isp1362_hcd->atl_queue.skip_map);
1051 isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE);
1052 }
1053 }
1054 }
1055
1056 if (irqstat & HCuPINT_ISTL0) {
1057 isp1362_hcd->irq_stat[ISP1362_INT_ISTL0]++;
1058 handled = 1;
1059 svc_mask &= ~HCuPINT_ISTL0;
1060 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL0_FULL);
1061 DBG(1, "%s: ISTL0\n", __func__);
1062 WARN_ON((int)!!isp1362_hcd->istl_flip);
1063 WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) &
1064 HCBUFSTAT_ISTL0_ACTIVE);
1065 WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) &
1066 HCBUFSTAT_ISTL0_DONE));
1067 isp1362_hcd->irqenb &= ~HCuPINT_ISTL0;
1068 }
1069
1070 if (irqstat & HCuPINT_ISTL1) {
1071 isp1362_hcd->irq_stat[ISP1362_INT_ISTL1]++;
1072 handled = 1;
1073 svc_mask &= ~HCuPINT_ISTL1;
1074 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL1_FULL);
1075 DBG(1, "%s: ISTL1\n", __func__);
1076 WARN_ON(!(int)isp1362_hcd->istl_flip);
1077 WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) &
1078 HCBUFSTAT_ISTL1_ACTIVE);
1079 WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) &
1080 HCBUFSTAT_ISTL1_DONE));
1081 isp1362_hcd->irqenb &= ~HCuPINT_ISTL1;
1082 }
1083
1084 if (irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) {
1085 WARN_ON((irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) ==
1086 (HCuPINT_ISTL0 | HCuPINT_ISTL1));
1087 finish_iso_transfers(isp1362_hcd,
1088 &isp1362_hcd->istl_queue[isp1362_hcd->istl_flip]);
1089 start_iso_transfers(isp1362_hcd);
1090 isp1362_hcd->istl_flip = 1 - isp1362_hcd->istl_flip;
1091 }
1092
1093 if (irqstat & HCuPINT_INTL) {
1094 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE);
1095 u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCINTLSKIP);
1096 isp1362_hcd->irq_stat[ISP1362_INT_INTL]++;
1097
1098 DBG(2, "%s: INTL\n", __func__);
1099
1100 svc_mask &= ~HCuPINT_INTL;
1101
1102 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, skip_map | done_map);
1103 if (~(done_map | skip_map) == 0)
1104 /* All PTDs are finished, disable INTL processing entirely */
1105 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE);
1106
1107 handled = 1;
1108 WARN_ON(!done_map);
1109 if (done_map) {
1110 DBG(3, "%s: INTL done_map %08x\n", __func__, done_map);
1111 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue);
1112 start_intl_transfers(isp1362_hcd);
1113 }
1114 }
1115
1116 if (irqstat & HCuPINT_ATL) {
1117 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE);
1118 u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCATLSKIP);
1119 isp1362_hcd->irq_stat[ISP1362_INT_ATL]++;
1120
1121 DBG(2, "%s: ATL\n", __func__);
1122
1123 svc_mask &= ~HCuPINT_ATL;
1124
1125 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, skip_map | done_map);
1126 if (~(done_map | skip_map) == 0)
1127 isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE);
1128 if (done_map) {
1129 DBG(3, "%s: ATL done_map %08x\n", __func__, done_map);
1130 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue);
1131 start_atl_transfers(isp1362_hcd);
1132 }
1133 handled = 1;
1134 }
1135
1136 if (irqstat & HCuPINT_OPR) {
1137 u32 intstat = isp1362_read_reg32(isp1362_hcd, HCINTSTAT);
1138 isp1362_hcd->irq_stat[ISP1362_INT_OPR]++;
1139
1140 svc_mask &= ~HCuPINT_OPR;
1141 DBG(2, "%s: OPR %08x:%08x\n", __func__, intstat, isp1362_hcd->intenb);
1142 intstat &= isp1362_hcd->intenb;
1143 if (intstat & OHCI_INTR_UE) {
1144 pr_err("Unrecoverable error\n");
1145 /* FIXME: do here reset or cleanup or whatever */
1146 }
1147 if (intstat & OHCI_INTR_RHSC) {
1148 isp1362_hcd->rhstatus = isp1362_read_reg32(isp1362_hcd, HCRHSTATUS);
1149 isp1362_hcd->rhport[0] = isp1362_read_reg32(isp1362_hcd, HCRHPORT1);
1150 isp1362_hcd->rhport[1] = isp1362_read_reg32(isp1362_hcd, HCRHPORT2);
1151 }
1152 if (intstat & OHCI_INTR_RD) {
1153 pr_info("%s: RESUME DETECTED\n", __func__);
1154 isp1362_show_reg(isp1362_hcd, HCCONTROL);
1155 usb_hcd_resume_root_hub(hcd);
1156 }
1157 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, intstat);
1158 irqstat &= ~HCuPINT_OPR;
1159 handled = 1;
1160 }
1161
1162 if (irqstat & HCuPINT_SUSP) {
1163 isp1362_hcd->irq_stat[ISP1362_INT_SUSP]++;
1164 handled = 1;
1165 svc_mask &= ~HCuPINT_SUSP;
1166
1167 pr_info("%s: SUSPEND IRQ\n", __func__);
1168 }
1169
1170 if (irqstat & HCuPINT_CLKRDY) {
1171 isp1362_hcd->irq_stat[ISP1362_INT_CLKRDY]++;
1172 handled = 1;
1173 isp1362_hcd->irqenb &= ~HCuPINT_CLKRDY;
1174 svc_mask &= ~HCuPINT_CLKRDY;
1175 pr_info("%s: CLKRDY IRQ\n", __func__);
1176 }
1177
1178 if (svc_mask)
1179 pr_err("%s: Unserviced interrupt(s) %04x\n", __func__, svc_mask);
1180
1181 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb);
1182 isp1362_hcd->irq_active--;
1183 spin_unlock(&isp1362_hcd->lock);
1184
1185 return IRQ_RETVAL(handled);
1186 }
1187
1188 /*-------------------------------------------------------------------------*/
1189
1190 #define MAX_PERIODIC_LOAD 900 /* out of 1000 usec */
1191 static int balance(struct isp1362_hcd *isp1362_hcd, u16 interval, u16 load)
1192 {
1193 int i, branch = -ENOSPC;
1194
1195 /* search for the least loaded schedule branch of that interval
1196 * which has enough bandwidth left unreserved.
1197 */
1198 for (i = 0; i < interval; i++) {
1199 if (branch < 0 || isp1362_hcd->load[branch] > isp1362_hcd->load[i]) {
1200 int j;
1201
1202 for (j = i; j < PERIODIC_SIZE; j += interval) {
1203 if ((isp1362_hcd->load[j] + load) > MAX_PERIODIC_LOAD) {
1204 pr_err("%s: new load %d load[%02x] %d max %d\n", __func__,
1205 load, j, isp1362_hcd->load[j], MAX_PERIODIC_LOAD);
1206 break;
1207 }
1208 }
1209 if (j < PERIODIC_SIZE)
1210 continue;
1211 branch = i;
1212 }
1213 }
1214 return branch;
1215 }
1216
1217 /* NB! ALL the code above this point runs with isp1362_hcd->lock
1218 held, irqs off
1219 */
1220
1221 /*-------------------------------------------------------------------------*/
1222
1223 static int isp1362_urb_enqueue(struct usb_hcd *hcd,
1224 struct urb *urb,
1225 gfp_t mem_flags)
1226 {
1227 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
1228 struct usb_device *udev = urb->dev;
1229 unsigned int pipe = urb->pipe;
1230 int is_out = !usb_pipein(pipe);
1231 int type = usb_pipetype(pipe);
1232 int epnum = usb_pipeendpoint(pipe);
1233 struct usb_host_endpoint *hep = urb->ep;
1234 struct isp1362_ep *ep = NULL;
1235 unsigned long flags;
1236 int retval = 0;
1237
1238 DBG(3, "%s: urb %p\n", __func__, urb);
1239
1240 if (type == PIPE_ISOCHRONOUS) {
1241 pr_err("Isochronous transfers not supported\n");
1242 return -ENOSPC;
1243 }
1244
1245 URB_DBG("%s: FA %d ep%d%s %s: len %d %s%s\n", __func__,
1246 usb_pipedevice(pipe), epnum,
1247 is_out ? "out" : "in",
1248 usb_pipecontrol(pipe) ? "ctrl" :
1249 usb_pipeint(pipe) ? "int" :
1250 usb_pipebulk(pipe) ? "bulk" :
1251 "iso",
1252 urb->transfer_buffer_length,
1253 (urb->transfer_flags & URB_ZERO_PACKET) ? "ZERO_PACKET " : "",
1254 !(urb->transfer_flags & URB_SHORT_NOT_OK) ?
1255 "short_ok" : "");
1256
1257 /* avoid all allocations within spinlocks: request or endpoint */
1258 if (!hep->hcpriv) {
1259 ep = kzalloc(sizeof *ep, mem_flags);
1260 if (!ep)
1261 return -ENOMEM;
1262 }
1263 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1264
1265 /* don't submit to a dead or disabled port */
1266 if (!((isp1362_hcd->rhport[0] | isp1362_hcd->rhport[1]) &
1267 USB_PORT_STAT_ENABLE) ||
1268 !HC_IS_RUNNING(hcd->state)) {
1269 kfree(ep);
1270 retval = -ENODEV;
1271 goto fail_not_linked;
1272 }
1273
1274 retval = usb_hcd_link_urb_to_ep(hcd, urb);
1275 if (retval) {
1276 kfree(ep);
1277 goto fail_not_linked;
1278 }
1279
1280 if (hep->hcpriv) {
1281 ep = hep->hcpriv;
1282 } else {
1283 INIT_LIST_HEAD(&ep->schedule);
1284 INIT_LIST_HEAD(&ep->active);
1285 INIT_LIST_HEAD(&ep->remove_list);
1286 ep->udev = usb_get_dev(udev);
1287 ep->hep = hep;
1288 ep->epnum = epnum;
1289 ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
1290 ep->ptd_offset = -EINVAL;
1291 ep->ptd_index = -EINVAL;
1292 usb_settoggle(udev, epnum, is_out, 0);
1293
1294 if (type == PIPE_CONTROL)
1295 ep->nextpid = USB_PID_SETUP;
1296 else if (is_out)
1297 ep->nextpid = USB_PID_OUT;
1298 else
1299 ep->nextpid = USB_PID_IN;
1300
1301 switch (type) {
1302 case PIPE_ISOCHRONOUS:
1303 case PIPE_INTERRUPT:
1304 if (urb->interval > PERIODIC_SIZE)
1305 urb->interval = PERIODIC_SIZE;
1306 ep->interval = urb->interval;
1307 ep->branch = PERIODIC_SIZE;
1308 ep->load = usb_calc_bus_time(udev->speed, !is_out,
1309 (type == PIPE_ISOCHRONOUS),
1310 usb_maxpacket(udev, pipe, is_out)) / 1000;
1311 break;
1312 }
1313 hep->hcpriv = ep;
1314 }
1315 ep->num_req = isp1362_hcd->req_serial++;
1316
1317 /* maybe put endpoint into schedule */
1318 switch (type) {
1319 case PIPE_CONTROL:
1320 case PIPE_BULK:
1321 if (list_empty(&ep->schedule)) {
1322 DBG(1, "%s: Adding ep %p req %d to async schedule\n",
1323 __func__, ep, ep->num_req);
1324 list_add_tail(&ep->schedule, &isp1362_hcd->async);
1325 }
1326 break;
1327 case PIPE_ISOCHRONOUS:
1328 case PIPE_INTERRUPT:
1329 urb->interval = ep->interval;
1330
1331 /* urb submitted for already existing EP */
1332 if (ep->branch < PERIODIC_SIZE)
1333 break;
1334
1335 retval = balance(isp1362_hcd, ep->interval, ep->load);
1336 if (retval < 0) {
1337 pr_err("%s: balance returned %d\n", __func__, retval);
1338 goto fail;
1339 }
1340 ep->branch = retval;
1341 retval = 0;
1342 isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM);
1343 DBG(1, "%s: Current frame %04x branch %02x start_frame %04x(%04x)\n",
1344 __func__, isp1362_hcd->fmindex, ep->branch,
1345 ((isp1362_hcd->fmindex + PERIODIC_SIZE - 1) &
1346 ~(PERIODIC_SIZE - 1)) + ep->branch,
1347 (isp1362_hcd->fmindex & (PERIODIC_SIZE - 1)) + ep->branch);
1348
1349 if (list_empty(&ep->schedule)) {
1350 if (type == PIPE_ISOCHRONOUS) {
1351 u16 frame = isp1362_hcd->fmindex;
1352
1353 frame += max_t(u16, 8, ep->interval);
1354 frame &= ~(ep->interval - 1);
1355 frame |= ep->branch;
1356 if (frame_before(frame, isp1362_hcd->fmindex))
1357 frame += ep->interval;
1358 urb->start_frame = frame;
1359
1360 DBG(1, "%s: Adding ep %p to isoc schedule\n", __func__, ep);
1361 list_add_tail(&ep->schedule, &isp1362_hcd->isoc);
1362 } else {
1363 DBG(1, "%s: Adding ep %p to periodic schedule\n", __func__, ep);
1364 list_add_tail(&ep->schedule, &isp1362_hcd->periodic);
1365 }
1366 } else
1367 DBG(1, "%s: ep %p already scheduled\n", __func__, ep);
1368
1369 DBG(2, "%s: load %d bandwidth %d -> %d\n", __func__,
1370 ep->load / ep->interval, isp1362_hcd->load[ep->branch],
1371 isp1362_hcd->load[ep->branch] + ep->load);
1372 isp1362_hcd->load[ep->branch] += ep->load;
1373 }
1374
1375 urb->hcpriv = hep;
1376 ALIGNSTAT(isp1362_hcd, urb->transfer_buffer);
1377
1378 switch (type) {
1379 case PIPE_CONTROL:
1380 case PIPE_BULK:
1381 start_atl_transfers(isp1362_hcd);
1382 break;
1383 case PIPE_INTERRUPT:
1384 start_intl_transfers(isp1362_hcd);
1385 break;
1386 case PIPE_ISOCHRONOUS:
1387 start_iso_transfers(isp1362_hcd);
1388 break;
1389 default:
1390 BUG();
1391 }
1392 fail:
1393 if (retval)
1394 usb_hcd_unlink_urb_from_ep(hcd, urb);
1395
1396
1397 fail_not_linked:
1398 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1399 if (retval)
1400 DBG(0, "%s: urb %p failed with %d\n", __func__, urb, retval);
1401 return retval;
1402 }
1403
1404 static int isp1362_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
1405 {
1406 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
1407 struct usb_host_endpoint *hep;
1408 unsigned long flags;
1409 struct isp1362_ep *ep;
1410 int retval = 0;
1411
1412 DBG(3, "%s: urb %p\n", __func__, urb);
1413
1414 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1415 retval = usb_hcd_check_unlink_urb(hcd, urb, status);
1416 if (retval)
1417 goto done;
1418
1419 hep = urb->hcpriv;
1420
1421 if (!hep) {
1422 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1423 return -EIDRM;
1424 }
1425
1426 ep = hep->hcpriv;
1427 if (ep) {
1428 /* In front of queue? */
1429 if (ep->hep->urb_list.next == &urb->urb_list) {
1430 if (!list_empty(&ep->active)) {
1431 DBG(1, "%s: urb %p ep %p req %d active PTD[%d] $%04x\n", __func__,
1432 urb, ep, ep->num_req, ep->ptd_index, ep->ptd_offset);
1433 /* disable processing and queue PTD for removal */
1434 remove_ptd(isp1362_hcd, ep);
1435 urb = NULL;
1436 }
1437 }
1438 if (urb) {
1439 DBG(1, "%s: Finishing ep %p req %d\n", __func__, ep,
1440 ep->num_req);
1441 finish_request(isp1362_hcd, ep, urb, status);
1442 } else
1443 DBG(1, "%s: urb %p active; wait4irq\n", __func__, urb);
1444 } else {
1445 pr_warning("%s: No EP in URB %p\n", __func__, urb);
1446 retval = -EINVAL;
1447 }
1448 done:
1449 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1450
1451 DBG(3, "%s: exit\n", __func__);
1452
1453 return retval;
1454 }
1455
1456 static void isp1362_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep)
1457 {
1458 struct isp1362_ep *ep = hep->hcpriv;
1459 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
1460 unsigned long flags;
1461
1462 DBG(1, "%s: ep %p\n", __func__, ep);
1463 if (!ep)
1464 return;
1465 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1466 if (!list_empty(&hep->urb_list)) {
1467 if (!list_empty(&ep->active) && list_empty(&ep->remove_list)) {
1468 DBG(1, "%s: Removing ep %p req %d PTD[%d] $%04x\n", __func__,
1469 ep, ep->num_req, ep->ptd_index, ep->ptd_offset);
1470 remove_ptd(isp1362_hcd, ep);
1471 pr_info("%s: Waiting for Interrupt to clean up\n", __func__);
1472 }
1473 }
1474 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1475 /* Wait for interrupt to clear out active list */
1476 while (!list_empty(&ep->active))
1477 msleep(1);
1478
1479 DBG(1, "%s: Freeing EP %p\n", __func__, ep);
1480
1481 usb_put_dev(ep->udev);
1482 kfree(ep);
1483 hep->hcpriv = NULL;
1484 }
1485
1486 static int isp1362_get_frame(struct usb_hcd *hcd)
1487 {
1488 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
1489 u32 fmnum;
1490 unsigned long flags;
1491
1492 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1493 fmnum = isp1362_read_reg32(isp1362_hcd, HCFMNUM);
1494 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1495
1496 return (int)fmnum;
1497 }
1498
1499 /*-------------------------------------------------------------------------*/
1500
1501 /* Adapted from ohci-hub.c */
1502 static int isp1362_hub_status_data(struct usb_hcd *hcd, char *buf)
1503 {
1504 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
1505 int ports, i, changed = 0;
1506 unsigned long flags;
1507
1508 if (!HC_IS_RUNNING(hcd->state))
1509 return -ESHUTDOWN;
1510
1511 /* Report no status change now, if we are scheduled to be
1512 called later */
1513 if (timer_pending(&hcd->rh_timer))
1514 return 0;
1515
1516 ports = isp1362_hcd->rhdesca & RH_A_NDP;
1517 BUG_ON(ports > 2);
1518
1519 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1520 /* init status */
1521 if (isp1362_hcd->rhstatus & (RH_HS_LPSC | RH_HS_OCIC))
1522 buf[0] = changed = 1;
1523 else
1524 buf[0] = 0;
1525
1526 for (i = 0; i < ports; i++) {
1527 u32 status = isp1362_hcd->rhport[i];
1528
1529 if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC |
1530 RH_PS_OCIC | RH_PS_PRSC)) {
1531 changed = 1;
1532 buf[0] |= 1 << (i + 1);
1533 continue;
1534 }
1535
1536 if (!(status & RH_PS_CCS))
1537 continue;
1538 }
1539 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1540 return changed;
1541 }
1542
1543 static void isp1362_hub_descriptor(struct isp1362_hcd *isp1362_hcd,
1544 struct usb_hub_descriptor *desc)
1545 {
1546 u32 reg = isp1362_hcd->rhdesca;
1547
1548 DBG(3, "%s: enter\n", __func__);
1549
1550 desc->bDescriptorType = 0x29;
1551 desc->bDescLength = 9;
1552 desc->bHubContrCurrent = 0;
1553 desc->bNbrPorts = reg & 0x3;
1554 /* Power switching, device type, overcurrent. */
1555 desc->wHubCharacteristics = cpu_to_le16((reg >> 8) & 0x1f);
1556 DBG(0, "%s: hubcharacteristics = %02x\n", __func__, cpu_to_le16((reg >> 8) & 0x1f));
1557 desc->bPwrOn2PwrGood = (reg >> 24) & 0xff;
1558 /* two bitmaps: ports removable, and legacy PortPwrCtrlMask */
1559 desc->bitmap[0] = desc->bNbrPorts == 1 ? 1 << 1 : 3 << 1;
1560 desc->bitmap[1] = ~0;
1561
1562 DBG(3, "%s: exit\n", __func__);
1563 }
1564
1565 /* Adapted from ohci-hub.c */
1566 static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
1567 u16 wIndex, char *buf, u16 wLength)
1568 {
1569 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
1570 int retval = 0;
1571 unsigned long flags;
1572 unsigned long t1;
1573 int ports = isp1362_hcd->rhdesca & RH_A_NDP;
1574 u32 tmp = 0;
1575
1576 switch (typeReq) {
1577 case ClearHubFeature:
1578 DBG(0, "ClearHubFeature: ");
1579 switch (wValue) {
1580 case C_HUB_OVER_CURRENT:
1581 _DBG(0, "C_HUB_OVER_CURRENT\n");
1582 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1583 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_OCIC);
1584 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1585 case C_HUB_LOCAL_POWER:
1586 _DBG(0, "C_HUB_LOCAL_POWER\n");
1587 break;
1588 default:
1589 goto error;
1590 }
1591 break;
1592 case SetHubFeature:
1593 DBG(0, "SetHubFeature: ");
1594 switch (wValue) {
1595 case C_HUB_OVER_CURRENT:
1596 case C_HUB_LOCAL_POWER:
1597 _DBG(0, "C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n");
1598 break;
1599 default:
1600 goto error;
1601 }
1602 break;
1603 case GetHubDescriptor:
1604 DBG(0, "GetHubDescriptor\n");
1605 isp1362_hub_descriptor(isp1362_hcd, (struct usb_hub_descriptor *)buf);
1606 break;
1607 case GetHubStatus:
1608 DBG(0, "GetHubStatus\n");
1609 put_unaligned(cpu_to_le32(0), (__le32 *) buf);
1610 break;
1611 case GetPortStatus:
1612 #ifndef VERBOSE
1613 DBG(0, "GetPortStatus\n");
1614 #endif
1615 if (!wIndex || wIndex > ports)
1616 goto error;
1617 tmp = isp1362_hcd->rhport[--wIndex];
1618 put_unaligned(cpu_to_le32(tmp), (__le32 *) buf);
1619 break;
1620 case ClearPortFeature:
1621 DBG(0, "ClearPortFeature: ");
1622 if (!wIndex || wIndex > ports)
1623 goto error;
1624 wIndex--;
1625
1626 switch (wValue) {
1627 case USB_PORT_FEAT_ENABLE:
1628 _DBG(0, "USB_PORT_FEAT_ENABLE\n");
1629 tmp = RH_PS_CCS;
1630 break;
1631 case USB_PORT_FEAT_C_ENABLE:
1632 _DBG(0, "USB_PORT_FEAT_C_ENABLE\n");
1633 tmp = RH_PS_PESC;
1634 break;
1635 case USB_PORT_FEAT_SUSPEND:
1636 _DBG(0, "USB_PORT_FEAT_SUSPEND\n");
1637 tmp = RH_PS_POCI;
1638 break;
1639 case USB_PORT_FEAT_C_SUSPEND:
1640 _DBG(0, "USB_PORT_FEAT_C_SUSPEND\n");
1641 tmp = RH_PS_PSSC;
1642 break;
1643 case USB_PORT_FEAT_POWER:
1644 _DBG(0, "USB_PORT_FEAT_POWER\n");
1645 tmp = RH_PS_LSDA;
1646
1647 break;
1648 case USB_PORT_FEAT_C_CONNECTION:
1649 _DBG(0, "USB_PORT_FEAT_C_CONNECTION\n");
1650 tmp = RH_PS_CSC;
1651 break;
1652 case USB_PORT_FEAT_C_OVER_CURRENT:
1653 _DBG(0, "USB_PORT_FEAT_C_OVER_CURRENT\n");
1654 tmp = RH_PS_OCIC;
1655 break;
1656 case USB_PORT_FEAT_C_RESET:
1657 _DBG(0, "USB_PORT_FEAT_C_RESET\n");
1658 tmp = RH_PS_PRSC;
1659 break;
1660 default:
1661 goto error;
1662 }
1663
1664 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1665 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, tmp);
1666 isp1362_hcd->rhport[wIndex] =
1667 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex);
1668 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1669 break;
1670 case SetPortFeature:
1671 DBG(0, "SetPortFeature: ");
1672 if (!wIndex || wIndex > ports)
1673 goto error;
1674 wIndex--;
1675 switch (wValue) {
1676 case USB_PORT_FEAT_SUSPEND:
1677 _DBG(0, "USB_PORT_FEAT_SUSPEND\n");
1678 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1679 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PSS);
1680 isp1362_hcd->rhport[wIndex] =
1681 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex);
1682 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1683 break;
1684 case USB_PORT_FEAT_POWER:
1685 _DBG(0, "USB_PORT_FEAT_POWER\n");
1686 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1687 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PPS);
1688 isp1362_hcd->rhport[wIndex] =
1689 isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex);
1690 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1691 break;
1692 case USB_PORT_FEAT_RESET:
1693 _DBG(0, "USB_PORT_FEAT_RESET\n");
1694 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1695
1696 t1 = jiffies + msecs_to_jiffies(USB_RESET_WIDTH);
1697 while (time_before(jiffies, t1)) {
1698 /* spin until any current reset finishes */
1699 for (;;) {
1700 tmp = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex);
1701 if (!(tmp & RH_PS_PRS))
1702 break;
1703 udelay(500);
1704 }
1705 if (!(tmp & RH_PS_CCS))
1706 break;
1707 /* Reset lasts 10ms (claims datasheet) */
1708 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, (RH_PS_PRS));
1709
1710 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1711 msleep(10);
1712 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1713 }
1714
1715 isp1362_hcd->rhport[wIndex] = isp1362_read_reg32(isp1362_hcd,
1716 HCRHPORT1 + wIndex);
1717 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1718 break;
1719 default:
1720 goto error;
1721 }
1722 break;
1723
1724 default:
1725 error:
1726 /* "protocol stall" on error */
1727 _DBG(0, "PROTOCOL STALL\n");
1728 retval = -EPIPE;
1729 }
1730
1731 return retval;
1732 }
1733
1734 #ifdef CONFIG_PM
1735 static int isp1362_bus_suspend(struct usb_hcd *hcd)
1736 {
1737 int status = 0;
1738 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
1739 unsigned long flags;
1740
1741 if (time_before(jiffies, isp1362_hcd->next_statechange))
1742 msleep(5);
1743
1744 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1745
1746 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL);
1747 switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) {
1748 case OHCI_USB_RESUME:
1749 DBG(0, "%s: resume/suspend?\n", __func__);
1750 isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS;
1751 isp1362_hcd->hc_control |= OHCI_USB_RESET;
1752 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
1753 /* FALL THROUGH */
1754 case OHCI_USB_RESET:
1755 status = -EBUSY;
1756 pr_warning("%s: needs reinit!\n", __func__);
1757 goto done;
1758 case OHCI_USB_SUSPEND:
1759 pr_warning("%s: already suspended?\n", __func__);
1760 goto done;
1761 }
1762 DBG(0, "%s: suspend root hub\n", __func__);
1763
1764 /* First stop any processing */
1765 hcd->state = HC_STATE_QUIESCING;
1766 if (!list_empty(&isp1362_hcd->atl_queue.active) ||
1767 !list_empty(&isp1362_hcd->intl_queue.active) ||
1768 !list_empty(&isp1362_hcd->istl_queue[0] .active) ||
1769 !list_empty(&isp1362_hcd->istl_queue[1] .active)) {
1770 int limit;
1771
1772 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0);
1773 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0);
1774 isp1362_write_reg16(isp1362_hcd, HCBUFSTAT, 0);
1775 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0);
1776 isp1362_write_reg32(isp1362_hcd, HCINTSTAT, OHCI_INTR_SF);
1777
1778 DBG(0, "%s: stopping schedules ...\n", __func__);
1779 limit = 2000;
1780 while (limit > 0) {
1781 udelay(250);
1782 limit -= 250;
1783 if (isp1362_read_reg32(isp1362_hcd, HCINTSTAT) & OHCI_INTR_SF)
1784 break;
1785 }
1786 mdelay(7);
1787 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ATL) {
1788 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE);
1789 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue);
1790 }
1791 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_INTL) {
1792 u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE);
1793 finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue);
1794 }
1795 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL0)
1796 finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[0]);
1797 if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL1)
1798 finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[1]);
1799 }
1800 DBG(0, "%s: HCINTSTAT: %08x\n", __func__,
1801 isp1362_read_reg32(isp1362_hcd, HCINTSTAT));
1802 isp1362_write_reg32(isp1362_hcd, HCINTSTAT,
1803 isp1362_read_reg32(isp1362_hcd, HCINTSTAT));
1804
1805 /* Suspend hub */
1806 isp1362_hcd->hc_control = OHCI_USB_SUSPEND;
1807 isp1362_show_reg(isp1362_hcd, HCCONTROL);
1808 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
1809 isp1362_show_reg(isp1362_hcd, HCCONTROL);
1810
1811 #if 1
1812 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL);
1813 if ((isp1362_hcd->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_SUSPEND) {
1814 pr_err("%s: controller won't suspend %08x\n", __func__,
1815 isp1362_hcd->hc_control);
1816 status = -EBUSY;
1817 } else
1818 #endif
1819 {
1820 /* no resumes until devices finish suspending */
1821 isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(5);
1822 }
1823 done:
1824 if (status == 0) {
1825 hcd->state = HC_STATE_SUSPENDED;
1826 DBG(0, "%s: HCD suspended: %08x\n", __func__,
1827 isp1362_read_reg32(isp1362_hcd, HCCONTROL));
1828 }
1829 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1830 return status;
1831 }
1832
1833 static int isp1362_bus_resume(struct usb_hcd *hcd)
1834 {
1835 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
1836 u32 port;
1837 unsigned long flags;
1838 int status = -EINPROGRESS;
1839
1840 if (time_before(jiffies, isp1362_hcd->next_statechange))
1841 msleep(5);
1842
1843 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1844 isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL);
1845 pr_info("%s: HCCONTROL: %08x\n", __func__, isp1362_hcd->hc_control);
1846 if (hcd->state == HC_STATE_RESUMING) {
1847 pr_warning("%s: duplicate resume\n", __func__);
1848 status = 0;
1849 } else
1850 switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) {
1851 case OHCI_USB_SUSPEND:
1852 DBG(0, "%s: resume root hub\n", __func__);
1853 isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS;
1854 isp1362_hcd->hc_control |= OHCI_USB_RESUME;
1855 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
1856 break;
1857 case OHCI_USB_RESUME:
1858 /* HCFS changes sometime after INTR_RD */
1859 DBG(0, "%s: remote wakeup\n", __func__);
1860 break;
1861 case OHCI_USB_OPER:
1862 DBG(0, "%s: odd resume\n", __func__);
1863 status = 0;
1864 hcd->self.root_hub->dev.power.power_state = PMSG_ON;
1865 break;
1866 default: /* RESET, we lost power */
1867 DBG(0, "%s: root hub hardware reset\n", __func__);
1868 status = -EBUSY;
1869 }
1870 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1871 if (status == -EBUSY) {
1872 DBG(0, "%s: Restarting HC\n", __func__);
1873 isp1362_hc_stop(hcd);
1874 return isp1362_hc_start(hcd);
1875 }
1876 if (status != -EINPROGRESS)
1877 return status;
1878 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1879 port = isp1362_read_reg32(isp1362_hcd, HCRHDESCA) & RH_A_NDP;
1880 while (port--) {
1881 u32 stat = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + port);
1882
1883 /* force global, not selective, resume */
1884 if (!(stat & RH_PS_PSS)) {
1885 DBG(0, "%s: Not Resuming RH port %d\n", __func__, port);
1886 continue;
1887 }
1888 DBG(0, "%s: Resuming RH port %d\n", __func__, port);
1889 isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + port, RH_PS_POCI);
1890 }
1891 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1892
1893 /* Some controllers (lucent) need extra-long delays */
1894 hcd->state = HC_STATE_RESUMING;
1895 mdelay(20 /* usb 11.5.1.10 */ + 15);
1896
1897 isp1362_hcd->hc_control = OHCI_USB_OPER;
1898 spin_lock_irqsave(&isp1362_hcd->lock, flags);
1899 isp1362_show_reg(isp1362_hcd, HCCONTROL);
1900 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
1901 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
1902 /* TRSMRCY */
1903 msleep(10);
1904
1905 /* keep it alive for ~5x suspend + resume costs */
1906 isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(250);
1907
1908 hcd->self.root_hub->dev.power.power_state = PMSG_ON;
1909 hcd->state = HC_STATE_RUNNING;
1910 return 0;
1911 }
1912 #else
1913 #define isp1362_bus_suspend NULL
1914 #define isp1362_bus_resume NULL
1915 #endif
1916
1917 /*-------------------------------------------------------------------------*/
1918
1919 #ifdef STUB_DEBUG_FILE
1920
1921 static inline void create_debug_file(struct isp1362_hcd *isp1362_hcd)
1922 {
1923 }
1924 static inline void remove_debug_file(struct isp1362_hcd *isp1362_hcd)
1925 {
1926 }
1927
1928 #else
1929
1930 #include <linux/proc_fs.h>
1931 #include <linux/seq_file.h>
1932
1933 static void dump_irq(struct seq_file *s, char *label, u16 mask)
1934 {
1935 seq_printf(s, "%-15s %04x%s%s%s%s%s%s\n", label, mask,
1936 mask & HCuPINT_CLKRDY ? " clkrdy" : "",
1937 mask & HCuPINT_SUSP ? " susp" : "",
1938 mask & HCuPINT_OPR ? " opr" : "",
1939 mask & HCuPINT_EOT ? " eot" : "",
1940 mask & HCuPINT_ATL ? " atl" : "",
1941 mask & HCuPINT_SOF ? " sof" : "");
1942 }
1943
1944 static void dump_int(struct seq_file *s, char *label, u32 mask)
1945 {
1946 seq_printf(s, "%-15s %08x%s%s%s%s%s%s%s\n", label, mask,
1947 mask & OHCI_INTR_MIE ? " MIE" : "",
1948 mask & OHCI_INTR_RHSC ? " rhsc" : "",
1949 mask & OHCI_INTR_FNO ? " fno" : "",
1950 mask & OHCI_INTR_UE ? " ue" : "",
1951 mask & OHCI_INTR_RD ? " rd" : "",
1952 mask & OHCI_INTR_SF ? " sof" : "",
1953 mask & OHCI_INTR_SO ? " so" : "");
1954 }
1955
1956 static void dump_ctrl(struct seq_file *s, char *label, u32 mask)
1957 {
1958 seq_printf(s, "%-15s %08x%s%s%s\n", label, mask,
1959 mask & OHCI_CTRL_RWC ? " rwc" : "",
1960 mask & OHCI_CTRL_RWE ? " rwe" : "",
1961 ({
1962 char *hcfs;
1963 switch (mask & OHCI_CTRL_HCFS) {
1964 case OHCI_USB_OPER:
1965 hcfs = " oper";
1966 break;
1967 case OHCI_USB_RESET:
1968 hcfs = " reset";
1969 break;
1970 case OHCI_USB_RESUME:
1971 hcfs = " resume";
1972 break;
1973 case OHCI_USB_SUSPEND:
1974 hcfs = " suspend";
1975 break;
1976 default:
1977 hcfs = " ?";
1978 }
1979 hcfs;
1980 }));
1981 }
1982
1983 static void dump_regs(struct seq_file *s, struct isp1362_hcd *isp1362_hcd)
1984 {
1985 seq_printf(s, "HCREVISION [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCREVISION),
1986 isp1362_read_reg32(isp1362_hcd, HCREVISION));
1987 seq_printf(s, "HCCONTROL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCONTROL),
1988 isp1362_read_reg32(isp1362_hcd, HCCONTROL));
1989 seq_printf(s, "HCCMDSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCMDSTAT),
1990 isp1362_read_reg32(isp1362_hcd, HCCMDSTAT));
1991 seq_printf(s, "HCINTSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTSTAT),
1992 isp1362_read_reg32(isp1362_hcd, HCINTSTAT));
1993 seq_printf(s, "HCINTENB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTENB),
1994 isp1362_read_reg32(isp1362_hcd, HCINTENB));
1995 seq_printf(s, "HCFMINTVL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMINTVL),
1996 isp1362_read_reg32(isp1362_hcd, HCFMINTVL));
1997 seq_printf(s, "HCFMREM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMREM),
1998 isp1362_read_reg32(isp1362_hcd, HCFMREM));
1999 seq_printf(s, "HCFMNUM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMNUM),
2000 isp1362_read_reg32(isp1362_hcd, HCFMNUM));
2001 seq_printf(s, "HCLSTHRESH [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCLSTHRESH),
2002 isp1362_read_reg32(isp1362_hcd, HCLSTHRESH));
2003 seq_printf(s, "HCRHDESCA [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCA),
2004 isp1362_read_reg32(isp1362_hcd, HCRHDESCA));
2005 seq_printf(s, "HCRHDESCB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCB),
2006 isp1362_read_reg32(isp1362_hcd, HCRHDESCB));
2007 seq_printf(s, "HCRHSTATUS [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHSTATUS),
2008 isp1362_read_reg32(isp1362_hcd, HCRHSTATUS));
2009 seq_printf(s, "HCRHPORT1 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT1),
2010 isp1362_read_reg32(isp1362_hcd, HCRHPORT1));
2011 seq_printf(s, "HCRHPORT2 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT2),
2012 isp1362_read_reg32(isp1362_hcd, HCRHPORT2));
2013 seq_printf(s, "\n");
2014 seq_printf(s, "HCHWCFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCHWCFG),
2015 isp1362_read_reg16(isp1362_hcd, HCHWCFG));
2016 seq_printf(s, "HCDMACFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCDMACFG),
2017 isp1362_read_reg16(isp1362_hcd, HCDMACFG));
2018 seq_printf(s, "HCXFERCTR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCXFERCTR),
2019 isp1362_read_reg16(isp1362_hcd, HCXFERCTR));
2020 seq_printf(s, "HCuPINT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINT),
2021 isp1362_read_reg16(isp1362_hcd, HCuPINT));
2022 seq_printf(s, "HCuPINTENB [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINTENB),
2023 isp1362_read_reg16(isp1362_hcd, HCuPINTENB));
2024 seq_printf(s, "HCCHIPID [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCCHIPID),
2025 isp1362_read_reg16(isp1362_hcd, HCCHIPID));
2026 seq_printf(s, "HCSCRATCH [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCSCRATCH),
2027 isp1362_read_reg16(isp1362_hcd, HCSCRATCH));
2028 seq_printf(s, "HCBUFSTAT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCBUFSTAT),
2029 isp1362_read_reg16(isp1362_hcd, HCBUFSTAT));
2030 seq_printf(s, "HCDIRADDR [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCDIRADDR),
2031 isp1362_read_reg32(isp1362_hcd, HCDIRADDR));
2032 #if 0
2033 seq_printf(s, "HCDIRDATA [%02x] %04x\n", ISP1362_REG_NO(HCDIRDATA),
2034 isp1362_read_reg16(isp1362_hcd, HCDIRDATA));
2035 #endif
2036 seq_printf(s, "HCISTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLBUFSZ),
2037 isp1362_read_reg16(isp1362_hcd, HCISTLBUFSZ));
2038 seq_printf(s, "HCISTLRATE [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLRATE),
2039 isp1362_read_reg16(isp1362_hcd, HCISTLRATE));
2040 seq_printf(s, "\n");
2041 seq_printf(s, "HCINTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBUFSZ),
2042 isp1362_read_reg16(isp1362_hcd, HCINTLBUFSZ));
2043 seq_printf(s, "HCINTLBLKSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBLKSZ),
2044 isp1362_read_reg16(isp1362_hcd, HCINTLBLKSZ));
2045 seq_printf(s, "HCINTLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLDONE),
2046 isp1362_read_reg32(isp1362_hcd, HCINTLDONE));
2047 seq_printf(s, "HCINTLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLSKIP),
2048 isp1362_read_reg32(isp1362_hcd, HCINTLSKIP));
2049 seq_printf(s, "HCINTLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLLAST),
2050 isp1362_read_reg32(isp1362_hcd, HCINTLLAST));
2051 seq_printf(s, "HCINTLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLCURR),
2052 isp1362_read_reg16(isp1362_hcd, HCINTLCURR));
2053 seq_printf(s, "\n");
2054 seq_printf(s, "HCATLBUFSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBUFSZ),
2055 isp1362_read_reg16(isp1362_hcd, HCATLBUFSZ));
2056 seq_printf(s, "HCATLBLKSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBLKSZ),
2057 isp1362_read_reg16(isp1362_hcd, HCATLBLKSZ));
2058 #if 0
2059 seq_printf(s, "HCATLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDONE),
2060 isp1362_read_reg32(isp1362_hcd, HCATLDONE));
2061 #endif
2062 seq_printf(s, "HCATLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLSKIP),
2063 isp1362_read_reg32(isp1362_hcd, HCATLSKIP));
2064 seq_printf(s, "HCATLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLLAST),
2065 isp1362_read_reg32(isp1362_hcd, HCATLLAST));
2066 seq_printf(s, "HCATLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLCURR),
2067 isp1362_read_reg16(isp1362_hcd, HCATLCURR));
2068 seq_printf(s, "\n");
2069 seq_printf(s, "HCATLDTC [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTC),
2070 isp1362_read_reg16(isp1362_hcd, HCATLDTC));
2071 seq_printf(s, "HCATLDTCTO [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTCTO),
2072 isp1362_read_reg16(isp1362_hcd, HCATLDTCTO));
2073 }
2074
2075 static int proc_isp1362_show(struct seq_file *s, void *unused)
2076 {
2077 struct isp1362_hcd *isp1362_hcd = s->private;
2078 struct isp1362_ep *ep;
2079 int i;
2080
2081 seq_printf(s, "%s\n%s version %s\n",
2082 isp1362_hcd_to_hcd(isp1362_hcd)->product_desc, hcd_name, DRIVER_VERSION);
2083
2084 /* collect statistics to help estimate potential win for
2085 * DMA engines that care about alignment (PXA)
2086 */
2087 seq_printf(s, "alignment: 16b/%ld 8b/%ld 4b/%ld 2b/%ld 1b/%ld\n",
2088 isp1362_hcd->stat16, isp1362_hcd->stat8, isp1362_hcd->stat4,
2089 isp1362_hcd->stat2, isp1362_hcd->stat1);
2090 seq_printf(s, "max # ptds in ATL fifo: %d\n", isp1362_hcd->atl_queue.stat_maxptds);
2091 seq_printf(s, "max # ptds in INTL fifo: %d\n", isp1362_hcd->intl_queue.stat_maxptds);
2092 seq_printf(s, "max # ptds in ISTL fifo: %d\n",
2093 max(isp1362_hcd->istl_queue[0] .stat_maxptds,
2094 isp1362_hcd->istl_queue[1] .stat_maxptds));
2095
2096 /* FIXME: don't show the following in suspended state */
2097 spin_lock_irq(&isp1362_hcd->lock);
2098
2099 dump_irq(s, "hc_irq_enable", isp1362_read_reg16(isp1362_hcd, HCuPINTENB));
2100 dump_irq(s, "hc_irq_status", isp1362_read_reg16(isp1362_hcd, HCuPINT));
2101 dump_int(s, "ohci_int_enable", isp1362_read_reg32(isp1362_hcd, HCINTENB));
2102 dump_int(s, "ohci_int_status", isp1362_read_reg32(isp1362_hcd, HCINTSTAT));
2103 dump_ctrl(s, "ohci_control", isp1362_read_reg32(isp1362_hcd, HCCONTROL));
2104
2105 for (i = 0; i < NUM_ISP1362_IRQS; i++)
2106 if (isp1362_hcd->irq_stat[i])
2107 seq_printf(s, "%-15s: %d\n",
2108 ISP1362_INT_NAME(i), isp1362_hcd->irq_stat[i]);
2109
2110 dump_regs(s, isp1362_hcd);
2111 list_for_each_entry(ep, &isp1362_hcd->async, schedule) {
2112 struct urb *urb;
2113
2114 seq_printf(s, "%p, ep%d%s, maxpacket %d:\n", ep, ep->epnum,
2115 ({
2116 char *s;
2117 switch (ep->nextpid) {
2118 case USB_PID_IN:
2119 s = "in";
2120 break;
2121 case USB_PID_OUT:
2122 s = "out";
2123 break;
2124 case USB_PID_SETUP:
2125 s = "setup";
2126 break;
2127 case USB_PID_ACK:
2128 s = "status";
2129 break;
2130 default:
2131 s = "?";
2132 break;
2133 };
2134 s;}), ep->maxpacket) ;
2135 list_for_each_entry(urb, &ep->hep->urb_list, urb_list) {
2136 seq_printf(s, " urb%p, %d/%d\n", urb,
2137 urb->actual_length,
2138 urb->transfer_buffer_length);
2139 }
2140 }
2141 if (!list_empty(&isp1362_hcd->async))
2142 seq_printf(s, "\n");
2143 dump_ptd_queue(&isp1362_hcd->atl_queue);
2144
2145 seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE);
2146
2147 list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) {
2148 seq_printf(s, "branch:%2d load:%3d PTD[%d] $%04x:\n", ep->branch,
2149 isp1362_hcd->load[ep->branch], ep->ptd_index, ep->ptd_offset);
2150
2151 seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n",
2152 ep->interval, ep,
2153 (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ",
2154 ep->udev->devnum, ep->epnum,
2155 (ep->epnum == 0) ? "" :
2156 ((ep->nextpid == USB_PID_IN) ?
2157 "in" : "out"), ep->maxpacket);
2158 }
2159 dump_ptd_queue(&isp1362_hcd->intl_queue);
2160
2161 seq_printf(s, "ISO:\n");
2162
2163 list_for_each_entry(ep, &isp1362_hcd->isoc, schedule) {
2164 seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n",
2165 ep->interval, ep,
2166 (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ",
2167 ep->udev->devnum, ep->epnum,
2168 (ep->epnum == 0) ? "" :
2169 ((ep->nextpid == USB_PID_IN) ?
2170 "in" : "out"), ep->maxpacket);
2171 }
2172
2173 spin_unlock_irq(&isp1362_hcd->lock);
2174 seq_printf(s, "\n");
2175
2176 return 0;
2177 }
2178
2179 static int proc_isp1362_open(struct inode *inode, struct file *file)
2180 {
2181 return single_open(file, proc_isp1362_show, PDE(inode)->data);
2182 }
2183
2184 static const struct file_operations proc_ops = {
2185 .open = proc_isp1362_open,
2186 .read = seq_read,
2187 .llseek = seq_lseek,
2188 .release = single_release,
2189 };
2190
2191 /* expect just one isp1362_hcd per system */
2192 static const char proc_filename[] = "driver/isp1362";
2193
2194 static void create_debug_file(struct isp1362_hcd *isp1362_hcd)
2195 {
2196 struct proc_dir_entry *pde;
2197
2198 pde = create_proc_entry(proc_filename, 0, NULL);
2199 if (pde == NULL) {
2200 pr_warning("%s: Failed to create debug file '%s'\n", __func__, proc_filename);
2201 return;
2202 }
2203
2204 pde->proc_fops = &proc_ops;
2205 pde->data = isp1362_hcd;
2206 isp1362_hcd->pde = pde;
2207 }
2208
2209 static void remove_debug_file(struct isp1362_hcd *isp1362_hcd)
2210 {
2211 if (isp1362_hcd->pde)
2212 remove_proc_entry(proc_filename, NULL);
2213 }
2214
2215 #endif
2216
2217 /*-------------------------------------------------------------------------*/
2218
2219 static void __isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd)
2220 {
2221 int tmp = 20;
2222
2223 isp1362_write_reg16(isp1362_hcd, HCSWRES, HCSWRES_MAGIC);
2224 isp1362_write_reg32(isp1362_hcd, HCCMDSTAT, OHCI_HCR);
2225 while (--tmp) {
2226 mdelay(1);
2227 if (!(isp1362_read_reg32(isp1362_hcd, HCCMDSTAT) & OHCI_HCR))
2228 break;
2229 }
2230 if (!tmp)
2231 pr_err("Software reset timeout\n");
2232 }
2233
2234 static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd)
2235 {
2236 unsigned long flags;
2237
2238 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2239 __isp1362_sw_reset(isp1362_hcd);
2240 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2241 }
2242
2243 static int isp1362_mem_config(struct usb_hcd *hcd)
2244 {
2245 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
2246 unsigned long flags;
2247 u32 total;
2248 u16 istl_size = ISP1362_ISTL_BUFSIZE;
2249 u16 intl_blksize = ISP1362_INTL_BLKSIZE + PTD_HEADER_SIZE;
2250 u16 intl_size = ISP1362_INTL_BUFFERS * intl_blksize;
2251 u16 atl_blksize = ISP1362_ATL_BLKSIZE + PTD_HEADER_SIZE;
2252 u16 atl_buffers = (ISP1362_BUF_SIZE - (istl_size + intl_size)) / atl_blksize;
2253 u16 atl_size;
2254 int i;
2255
2256 WARN_ON(istl_size & 3);
2257 WARN_ON(atl_blksize & 3);
2258 WARN_ON(intl_blksize & 3);
2259 WARN_ON(atl_blksize < PTD_HEADER_SIZE);
2260 WARN_ON(intl_blksize < PTD_HEADER_SIZE);
2261
2262 BUG_ON((unsigned)ISP1362_INTL_BUFFERS > 32);
2263 if (atl_buffers > 32)
2264 atl_buffers = 32;
2265 atl_size = atl_buffers * atl_blksize;
2266 total = atl_size + intl_size + istl_size;
2267 dev_info(hcd->self.controller, "ISP1362 Memory usage:\n");
2268 dev_info(hcd->self.controller, " ISTL: 2 * %4d: %4d @ $%04x:$%04x\n",
2269 istl_size / 2, istl_size, 0, istl_size / 2);
2270 dev_info(hcd->self.controller, " INTL: %4d * (%3zu+8): %4d @ $%04x\n",
2271 ISP1362_INTL_BUFFERS, intl_blksize - PTD_HEADER_SIZE,
2272 intl_size, istl_size);
2273 dev_info(hcd->self.controller, " ATL : %4d * (%3zu+8): %4d @ $%04x\n",
2274 atl_buffers, atl_blksize - PTD_HEADER_SIZE,
2275 atl_size, istl_size + intl_size);
2276 dev_info(hcd->self.controller, " USED/FREE: %4d %4d\n", total,
2277 ISP1362_BUF_SIZE - total);
2278
2279 if (total > ISP1362_BUF_SIZE) {
2280 dev_err(hcd->self.controller, "%s: Memory requested: %d, available %d\n",
2281 __func__, total, ISP1362_BUF_SIZE);
2282 return -ENOMEM;
2283 }
2284
2285 total = istl_size + intl_size + atl_size;
2286 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2287
2288 for (i = 0; i < 2; i++) {
2289 isp1362_hcd->istl_queue[i].buf_start = i * istl_size / 2,
2290 isp1362_hcd->istl_queue[i].buf_size = istl_size / 2;
2291 isp1362_hcd->istl_queue[i].blk_size = 4;
2292 INIT_LIST_HEAD(&isp1362_hcd->istl_queue[i].active);
2293 snprintf(isp1362_hcd->istl_queue[i].name,
2294 sizeof(isp1362_hcd->istl_queue[i].name), "ISTL%d", i);
2295 DBG(3, "%s: %5s buf $%04x %d\n", __func__,
2296 isp1362_hcd->istl_queue[i].name,
2297 isp1362_hcd->istl_queue[i].buf_start,
2298 isp1362_hcd->istl_queue[i].buf_size);
2299 }
2300 isp1362_write_reg16(isp1362_hcd, HCISTLBUFSZ, istl_size / 2);
2301
2302 isp1362_hcd->intl_queue.buf_start = istl_size;
2303 isp1362_hcd->intl_queue.buf_size = intl_size;
2304 isp1362_hcd->intl_queue.buf_count = ISP1362_INTL_BUFFERS;
2305 isp1362_hcd->intl_queue.blk_size = intl_blksize;
2306 isp1362_hcd->intl_queue.buf_avail = isp1362_hcd->intl_queue.buf_count;
2307 isp1362_hcd->intl_queue.skip_map = ~0;
2308 INIT_LIST_HEAD(&isp1362_hcd->intl_queue.active);
2309
2310 isp1362_write_reg16(isp1362_hcd, HCINTLBUFSZ,
2311 isp1362_hcd->intl_queue.buf_size);
2312 isp1362_write_reg16(isp1362_hcd, HCINTLBLKSZ,
2313 isp1362_hcd->intl_queue.blk_size - PTD_HEADER_SIZE);
2314 isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0);
2315 isp1362_write_reg32(isp1362_hcd, HCINTLLAST,
2316 1 << (ISP1362_INTL_BUFFERS - 1));
2317
2318 isp1362_hcd->atl_queue.buf_start = istl_size + intl_size;
2319 isp1362_hcd->atl_queue.buf_size = atl_size;
2320 isp1362_hcd->atl_queue.buf_count = atl_buffers;
2321 isp1362_hcd->atl_queue.blk_size = atl_blksize;
2322 isp1362_hcd->atl_queue.buf_avail = isp1362_hcd->atl_queue.buf_count;
2323 isp1362_hcd->atl_queue.skip_map = ~0;
2324 INIT_LIST_HEAD(&isp1362_hcd->atl_queue.active);
2325
2326 isp1362_write_reg16(isp1362_hcd, HCATLBUFSZ,
2327 isp1362_hcd->atl_queue.buf_size);
2328 isp1362_write_reg16(isp1362_hcd, HCATLBLKSZ,
2329 isp1362_hcd->atl_queue.blk_size - PTD_HEADER_SIZE);
2330 isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0);
2331 isp1362_write_reg32(isp1362_hcd, HCATLLAST,
2332 1 << (atl_buffers - 1));
2333
2334 snprintf(isp1362_hcd->atl_queue.name,
2335 sizeof(isp1362_hcd->atl_queue.name), "ATL");
2336 snprintf(isp1362_hcd->intl_queue.name,
2337 sizeof(isp1362_hcd->intl_queue.name), "INTL");
2338 DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__,
2339 isp1362_hcd->intl_queue.name,
2340 isp1362_hcd->intl_queue.buf_start,
2341 ISP1362_INTL_BUFFERS, isp1362_hcd->intl_queue.blk_size,
2342 isp1362_hcd->intl_queue.buf_size);
2343 DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__,
2344 isp1362_hcd->atl_queue.name,
2345 isp1362_hcd->atl_queue.buf_start,
2346 atl_buffers, isp1362_hcd->atl_queue.blk_size,
2347 isp1362_hcd->atl_queue.buf_size);
2348
2349 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2350
2351 return 0;
2352 }
2353
2354 static int isp1362_hc_reset(struct usb_hcd *hcd)
2355 {
2356 int ret = 0;
2357 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
2358 unsigned long t;
2359 unsigned long timeout = 100;
2360 unsigned long flags;
2361 int clkrdy = 0;
2362
2363 pr_info("%s:\n", __func__);
2364
2365 if (isp1362_hcd->board && isp1362_hcd->board->reset) {
2366 isp1362_hcd->board->reset(hcd->self.controller, 1);
2367 msleep(20);
2368 if (isp1362_hcd->board->clock)
2369 isp1362_hcd->board->clock(hcd->self.controller, 1);
2370 isp1362_hcd->board->reset(hcd->self.controller, 0);
2371 } else
2372 isp1362_sw_reset(isp1362_hcd);
2373
2374 /* chip has been reset. First we need to see a clock */
2375 t = jiffies + msecs_to_jiffies(timeout);
2376 while (!clkrdy && time_before_eq(jiffies, t)) {
2377 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2378 clkrdy = isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_CLKRDY;
2379 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2380 if (!clkrdy)
2381 msleep(4);
2382 }
2383
2384 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2385 isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_CLKRDY);
2386 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2387 if (!clkrdy) {
2388 pr_err("Clock not ready after %lums\n", timeout);
2389 ret = -ENODEV;
2390 }
2391 return ret;
2392 }
2393
2394 static void isp1362_hc_stop(struct usb_hcd *hcd)
2395 {
2396 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
2397 unsigned long flags;
2398 u32 tmp;
2399
2400 pr_info("%s:\n", __func__);
2401
2402 del_timer_sync(&hcd->rh_timer);
2403
2404 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2405
2406 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0);
2407
2408 /* Switch off power for all ports */
2409 tmp = isp1362_read_reg32(isp1362_hcd, HCRHDESCA);
2410 tmp &= ~(RH_A_NPS | RH_A_PSM);
2411 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, tmp);
2412 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS);
2413
2414 /* Reset the chip */
2415 if (isp1362_hcd->board && isp1362_hcd->board->reset)
2416 isp1362_hcd->board->reset(hcd->self.controller, 1);
2417 else
2418 __isp1362_sw_reset(isp1362_hcd);
2419
2420 if (isp1362_hcd->board && isp1362_hcd->board->clock)
2421 isp1362_hcd->board->clock(hcd->self.controller, 0);
2422
2423 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2424 }
2425
2426 #ifdef CHIP_BUFFER_TEST
2427 static int isp1362_chip_test(struct isp1362_hcd *isp1362_hcd)
2428 {
2429 int ret = 0;
2430 u16 *ref;
2431 unsigned long flags;
2432
2433 ref = kmalloc(2 * ISP1362_BUF_SIZE, GFP_KERNEL);
2434 if (ref) {
2435 int offset;
2436 u16 *tst = &ref[ISP1362_BUF_SIZE / 2];
2437
2438 for (offset = 0; offset < ISP1362_BUF_SIZE / 2; offset++) {
2439 ref[offset] = ~offset;
2440 tst[offset] = offset;
2441 }
2442
2443 for (offset = 0; offset < 4; offset++) {
2444 int j;
2445
2446 for (j = 0; j < 8; j++) {
2447 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2448 isp1362_write_buffer(isp1362_hcd, (u8 *)ref + offset, 0, j);
2449 isp1362_read_buffer(isp1362_hcd, (u8 *)tst + offset, 0, j);
2450 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2451
2452 if (memcmp(ref, tst, j)) {
2453 ret = -ENODEV;
2454 pr_err("%s: memory check with %d byte offset %d failed\n",
2455 __func__, j, offset);
2456 dump_data((u8 *)ref + offset, j);
2457 dump_data((u8 *)tst + offset, j);
2458 }
2459 }
2460 }
2461
2462 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2463 isp1362_write_buffer(isp1362_hcd, ref, 0, ISP1362_BUF_SIZE);
2464 isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE);
2465 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2466
2467 if (memcmp(ref, tst, ISP1362_BUF_SIZE)) {
2468 ret = -ENODEV;
2469 pr_err("%s: memory check failed\n", __func__);
2470 dump_data((u8 *)tst, ISP1362_BUF_SIZE / 2);
2471 }
2472
2473 for (offset = 0; offset < 256; offset++) {
2474 int test_size = 0;
2475
2476 yield();
2477
2478 memset(tst, 0, ISP1362_BUF_SIZE);
2479 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2480 isp1362_write_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE);
2481 isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE);
2482 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2483 if (memcmp(tst, tst + (ISP1362_BUF_SIZE / (2 * sizeof(*tst))),
2484 ISP1362_BUF_SIZE / 2)) {
2485 pr_err("%s: Failed to clear buffer\n", __func__);
2486 dump_data((u8 *)tst, ISP1362_BUF_SIZE);
2487 break;
2488 }
2489 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2490 isp1362_write_buffer(isp1362_hcd, ref, offset * 2, PTD_HEADER_SIZE);
2491 isp1362_write_buffer(isp1362_hcd, ref + PTD_HEADER_SIZE / sizeof(*ref),
2492 offset * 2 + PTD_HEADER_SIZE, test_size);
2493 isp1362_read_buffer(isp1362_hcd, tst, offset * 2,
2494 PTD_HEADER_SIZE + test_size);
2495 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2496 if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) {
2497 dump_data(((u8 *)ref) + offset, PTD_HEADER_SIZE + test_size);
2498 dump_data((u8 *)tst, PTD_HEADER_SIZE + test_size);
2499 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2500 isp1362_read_buffer(isp1362_hcd, tst, offset * 2,
2501 PTD_HEADER_SIZE + test_size);
2502 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2503 if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) {
2504 ret = -ENODEV;
2505 pr_err("%s: memory check with offset %02x failed\n",
2506 __func__, offset);
2507 break;
2508 }
2509 pr_warning("%s: memory check with offset %02x ok after second read\n",
2510 __func__, offset);
2511 }
2512 }
2513 kfree(ref);
2514 }
2515 return ret;
2516 }
2517 #endif
2518
2519 static int isp1362_hc_start(struct usb_hcd *hcd)
2520 {
2521 int ret;
2522 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
2523 struct isp1362_platform_data *board = isp1362_hcd->board;
2524 u16 hwcfg;
2525 u16 chipid;
2526 unsigned long flags;
2527
2528 pr_info("%s:\n", __func__);
2529
2530 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2531 chipid = isp1362_read_reg16(isp1362_hcd, HCCHIPID);
2532 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2533
2534 if ((chipid & HCCHIPID_MASK) != HCCHIPID_MAGIC) {
2535 pr_err("%s: Invalid chip ID %04x\n", __func__, chipid);
2536 return -ENODEV;
2537 }
2538
2539 #ifdef CHIP_BUFFER_TEST
2540 ret = isp1362_chip_test(isp1362_hcd);
2541 if (ret)
2542 return -ENODEV;
2543 #endif
2544 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2545 /* clear interrupt status and disable all interrupt sources */
2546 isp1362_write_reg16(isp1362_hcd, HCuPINT, 0xff);
2547 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0);
2548
2549 /* HW conf */
2550 hwcfg = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1);
2551 if (board->sel15Kres)
2552 hwcfg |= HCHWCFG_PULLDOWN_DS2 |
2553 ((MAX_ROOT_PORTS > 1) ? HCHWCFG_PULLDOWN_DS1 : 0);
2554 if (board->clknotstop)
2555 hwcfg |= HCHWCFG_CLKNOTSTOP;
2556 if (board->oc_enable)
2557 hwcfg |= HCHWCFG_ANALOG_OC;
2558 if (board->int_act_high)
2559 hwcfg |= HCHWCFG_INT_POL;
2560 if (board->int_edge_triggered)
2561 hwcfg |= HCHWCFG_INT_TRIGGER;
2562 if (board->dreq_act_high)
2563 hwcfg |= HCHWCFG_DREQ_POL;
2564 if (board->dack_act_high)
2565 hwcfg |= HCHWCFG_DACK_POL;
2566 isp1362_write_reg16(isp1362_hcd, HCHWCFG, hwcfg);
2567 isp1362_show_reg(isp1362_hcd, HCHWCFG);
2568 isp1362_write_reg16(isp1362_hcd, HCDMACFG, 0);
2569 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2570
2571 ret = isp1362_mem_config(hcd);
2572 if (ret)
2573 return ret;
2574
2575 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2576
2577 /* Root hub conf */
2578 isp1362_hcd->rhdesca = 0;
2579 if (board->no_power_switching)
2580 isp1362_hcd->rhdesca |= RH_A_NPS;
2581 if (board->power_switching_mode)
2582 isp1362_hcd->rhdesca |= RH_A_PSM;
2583 if (board->potpg)
2584 isp1362_hcd->rhdesca |= (board->potpg << 24) & RH_A_POTPGT;
2585 else
2586 isp1362_hcd->rhdesca |= (25 << 24) & RH_A_POTPGT;
2587
2588 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca & ~RH_A_OCPM);
2589 isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca | RH_A_OCPM);
2590 isp1362_hcd->rhdesca = isp1362_read_reg32(isp1362_hcd, HCRHDESCA);
2591
2592 isp1362_hcd->rhdescb = RH_B_PPCM;
2593 isp1362_write_reg32(isp1362_hcd, HCRHDESCB, isp1362_hcd->rhdescb);
2594 isp1362_hcd->rhdescb = isp1362_read_reg32(isp1362_hcd, HCRHDESCB);
2595
2596 isp1362_read_reg32(isp1362_hcd, HCFMINTVL);
2597 isp1362_write_reg32(isp1362_hcd, HCFMINTVL, (FSMP(FI) << 16) | FI);
2598 isp1362_write_reg32(isp1362_hcd, HCLSTHRESH, LSTHRESH);
2599
2600 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2601
2602 isp1362_hcd->hc_control = OHCI_USB_OPER;
2603 hcd->state = HC_STATE_RUNNING;
2604
2605 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2606 /* Set up interrupts */
2607 isp1362_hcd->intenb = OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE;
2608 isp1362_hcd->intenb |= OHCI_INTR_RD;
2609 isp1362_hcd->irqenb = HCuPINT_OPR | HCuPINT_SUSP;
2610 isp1362_write_reg32(isp1362_hcd, HCINTENB, isp1362_hcd->intenb);
2611 isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb);
2612
2613 /* Go operational */
2614 isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control);
2615 /* enable global power */
2616 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC | RH_HS_DRWE);
2617
2618 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2619
2620 return 0;
2621 }
2622
2623 /*-------------------------------------------------------------------------*/
2624
2625 static struct hc_driver isp1362_hc_driver = {
2626 .description = hcd_name,
2627 .product_desc = "ISP1362 Host Controller",
2628 .hcd_priv_size = sizeof(struct isp1362_hcd),
2629
2630 .irq = isp1362_irq,
2631 .flags = HCD_USB11 | HCD_MEMORY,
2632
2633 .reset = isp1362_hc_reset,
2634 .start = isp1362_hc_start,
2635 .stop = isp1362_hc_stop,
2636
2637 .urb_enqueue = isp1362_urb_enqueue,
2638 .urb_dequeue = isp1362_urb_dequeue,
2639 .endpoint_disable = isp1362_endpoint_disable,
2640
2641 .get_frame_number = isp1362_get_frame,
2642
2643 .hub_status_data = isp1362_hub_status_data,
2644 .hub_control = isp1362_hub_control,
2645 .bus_suspend = isp1362_bus_suspend,
2646 .bus_resume = isp1362_bus_resume,
2647 };
2648
2649 /*-------------------------------------------------------------------------*/
2650
2651 static int __devexit isp1362_remove(struct platform_device *pdev)
2652 {
2653 struct usb_hcd *hcd = platform_get_drvdata(pdev);
2654 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
2655 struct resource *res;
2656
2657 remove_debug_file(isp1362_hcd);
2658 DBG(0, "%s: Removing HCD\n", __func__);
2659 usb_remove_hcd(hcd);
2660
2661 DBG(0, "%s: Unmapping data_reg @ %p\n", __func__,
2662 isp1362_hcd->data_reg);
2663 iounmap(isp1362_hcd->data_reg);
2664
2665 DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__,
2666 isp1362_hcd->addr_reg);
2667 iounmap(isp1362_hcd->addr_reg);
2668
2669 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2670 DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start);
2671 if (res)
2672 release_mem_region(res->start, resource_size(res));
2673
2674 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2675 DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start);
2676 if (res)
2677 release_mem_region(res->start, resource_size(res));
2678
2679 DBG(0, "%s: put_hcd\n", __func__);
2680 usb_put_hcd(hcd);
2681 DBG(0, "%s: Done\n", __func__);
2682
2683 return 0;
2684 }
2685
2686 static int __devinit isp1362_probe(struct platform_device *pdev)
2687 {
2688 struct usb_hcd *hcd;
2689 struct isp1362_hcd *isp1362_hcd;
2690 struct resource *addr, *data;
2691 void __iomem *addr_reg;
2692 void __iomem *data_reg;
2693 int irq;
2694 int retval = 0;
2695 struct resource *irq_res;
2696 unsigned int irq_flags = 0;
2697
2698 /* basic sanity checks first. board-specific init logic should
2699 * have initialized this the three resources and probably board
2700 * specific platform_data. we don't probe for IRQs, and do only
2701 * minimal sanity checking.
2702 */
2703 if (pdev->num_resources < 3) {
2704 retval = -ENODEV;
2705 goto err1;
2706 }
2707
2708 data = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2709 addr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2710 irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2711 if (!addr || !data || !irq_res) {
2712 retval = -ENODEV;
2713 goto err1;
2714 }
2715 irq = irq_res->start;
2716
2717 if (pdev->dev.dma_mask) {
2718 DBG(1, "won't do DMA");
2719 retval = -ENODEV;
2720 goto err1;
2721 }
2722
2723 if (!request_mem_region(addr->start, resource_size(addr), hcd_name)) {
2724 retval = -EBUSY;
2725 goto err1;
2726 }
2727 addr_reg = ioremap(addr->start, resource_size(addr));
2728 if (addr_reg == NULL) {
2729 retval = -ENOMEM;
2730 goto err2;
2731 }
2732
2733 if (!request_mem_region(data->start, resource_size(data), hcd_name)) {
2734 retval = -EBUSY;
2735 goto err3;
2736 }
2737 data_reg = ioremap(data->start, resource_size(data));
2738 if (data_reg == NULL) {
2739 retval = -ENOMEM;
2740 goto err4;
2741 }
2742
2743 /* allocate and initialize hcd */
2744 hcd = usb_create_hcd(&isp1362_hc_driver, &pdev->dev, dev_name(&pdev->dev));
2745 if (!hcd) {
2746 retval = -ENOMEM;
2747 goto err5;
2748 }
2749 hcd->rsrc_start = data->start;
2750 isp1362_hcd = hcd_to_isp1362_hcd(hcd);
2751 isp1362_hcd->data_reg = data_reg;
2752 isp1362_hcd->addr_reg = addr_reg;
2753
2754 isp1362_hcd->next_statechange = jiffies;
2755 spin_lock_init(&isp1362_hcd->lock);
2756 INIT_LIST_HEAD(&isp1362_hcd->async);
2757 INIT_LIST_HEAD(&isp1362_hcd->periodic);
2758 INIT_LIST_HEAD(&isp1362_hcd->isoc);
2759 INIT_LIST_HEAD(&isp1362_hcd->remove_list);
2760 isp1362_hcd->board = pdev->dev.platform_data;
2761 #if USE_PLATFORM_DELAY
2762 if (!isp1362_hcd->board->delay) {
2763 dev_err(hcd->self.controller, "No platform delay function given\n");
2764 retval = -ENODEV;
2765 goto err6;
2766 }
2767 #endif
2768
2769 if (irq_res->flags & IORESOURCE_IRQ_HIGHEDGE)
2770 irq_flags |= IRQF_TRIGGER_RISING;
2771 if (irq_res->flags & IORESOURCE_IRQ_LOWEDGE)
2772 irq_flags |= IRQF_TRIGGER_FALLING;
2773 if (irq_res->flags & IORESOURCE_IRQ_HIGHLEVEL)
2774 irq_flags |= IRQF_TRIGGER_HIGH;
2775 if (irq_res->flags & IORESOURCE_IRQ_LOWLEVEL)
2776 irq_flags |= IRQF_TRIGGER_LOW;
2777
2778 retval = usb_add_hcd(hcd, irq, irq_flags | IRQF_DISABLED | IRQF_SHARED);
2779 if (retval != 0)
2780 goto err6;
2781 pr_info("%s, irq %d\n", hcd->product_desc, irq);
2782
2783 create_debug_file(isp1362_hcd);
2784
2785 return 0;
2786
2787 err6:
2788 DBG(0, "%s: Freeing dev %p\n", __func__, isp1362_hcd);
2789 usb_put_hcd(hcd);
2790 err5:
2791 DBG(0, "%s: Unmapping data_reg @ %p\n", __func__, data_reg);
2792 iounmap(data_reg);
2793 err4:
2794 DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)data->start);
2795 release_mem_region(data->start, resource_size(data));
2796 err3:
2797 DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__, addr_reg);
2798 iounmap(addr_reg);
2799 err2:
2800 DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)addr->start);
2801 release_mem_region(addr->start, resource_size(addr));
2802 err1:
2803 pr_err("%s: init error, %d\n", __func__, retval);
2804
2805 return retval;
2806 }
2807
2808 #ifdef CONFIG_PM
2809 static int isp1362_suspend(struct platform_device *pdev, pm_message_t state)
2810 {
2811 struct usb_hcd *hcd = platform_get_drvdata(pdev);
2812 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
2813 unsigned long flags;
2814 int retval = 0;
2815
2816 DBG(0, "%s: Suspending device\n", __func__);
2817
2818 if (state.event == PM_EVENT_FREEZE) {
2819 DBG(0, "%s: Suspending root hub\n", __func__);
2820 retval = isp1362_bus_suspend(hcd);
2821 } else {
2822 DBG(0, "%s: Suspending RH ports\n", __func__);
2823 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2824 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS);
2825 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2826 }
2827 if (retval == 0)
2828 pdev->dev.power.power_state = state;
2829 return retval;
2830 }
2831
2832 static int isp1362_resume(struct platform_device *pdev)
2833 {
2834 struct usb_hcd *hcd = platform_get_drvdata(pdev);
2835 struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
2836 unsigned long flags;
2837
2838 DBG(0, "%s: Resuming\n", __func__);
2839
2840 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2841 DBG(0, "%s: Resume RH ports\n", __func__);
2842 spin_lock_irqsave(&isp1362_hcd->lock, flags);
2843 isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC);
2844 spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
2845 return 0;
2846 }
2847
2848 pdev->dev.power.power_state = PMSG_ON;
2849
2850 return isp1362_bus_resume(isp1362_hcd_to_hcd(isp1362_hcd));
2851 }
2852 #else
2853 #define isp1362_suspend NULL
2854 #define isp1362_resume NULL
2855 #endif
2856
2857 static struct platform_driver isp1362_driver = {
2858 .probe = isp1362_probe,
2859 .remove = __devexit_p(isp1362_remove),
2860
2861 .suspend = isp1362_suspend,
2862 .resume = isp1362_resume,
2863 .driver = {
2864 .name = (char *)hcd_name,
2865 .owner = THIS_MODULE,
2866 },
2867 };
2868
2869 /*-------------------------------------------------------------------------*/
2870
2871 static int __init isp1362_init(void)
2872 {
2873 if (usb_disabled())
2874 return -ENODEV;
2875 pr_info("driver %s, %s\n", hcd_name, DRIVER_VERSION);
2876 return platform_driver_register(&isp1362_driver);
2877 }
2878 module_init(isp1362_init);
2879
2880 static void __exit isp1362_cleanup(void)
2881 {
2882 platform_driver_unregister(&isp1362_driver);
2883 }
2884 module_exit(isp1362_cleanup);
Linux kernel - Deliverables
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