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9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/slab.h>
12
13#include "xhci.h"
14#include "xhci-mtk.h"
15
16#define SSP_BW_BOUNDARY 130000
17#define SS_BW_BOUNDARY 51000
18
19#define HS_BW_BOUNDARY 6144
20
21#define FS_PAYLOAD_MAX 188
22
23
24
25
26#define TT_MICROFRAMES_MAX 9
27
28#define DBG_BUF_EN 64
29
30
31#define ESCH_SS_Y6 1001
32#define ESCH_SS_OVERLAP 1002
33#define ESCH_CS_OVERFLOW 1003
34#define ESCH_BW_OVERFLOW 1004
35#define ESCH_FIXME 1005
36
37
38#define EP_BPKTS(p) ((p) & 0x7f)
39#define EP_BCSCOUNT(p) (((p) & 0x7) << 8)
40#define EP_BBM(p) ((p) << 11)
41#define EP_BOFFSET(p) ((p) & 0x3fff)
42#define EP_BREPEAT(p) (((p) & 0x7fff) << 16)
43
44static char *sch_error_string(int err_num)
45{
46 switch (err_num) {
47 case ESCH_SS_Y6:
48 return "Can't schedule Start-Split in Y6";
49 case ESCH_SS_OVERLAP:
50 return "Can't find a suitable Start-Split location";
51 case ESCH_CS_OVERFLOW:
52 return "The last Complete-Split is greater than 7";
53 case ESCH_BW_OVERFLOW:
54 return "Bandwidth exceeds the maximum limit";
55 case ESCH_FIXME:
56 return "FIXME, to be resolved";
57 default:
58 return "Unknown";
59 }
60}
61
62static int is_fs_or_ls(enum usb_device_speed speed)
63{
64 return speed == USB_SPEED_FULL || speed == USB_SPEED_LOW;
65}
66
67static const char *
68decode_ep(struct usb_host_endpoint *ep, enum usb_device_speed speed)
69{
70 static char buf[DBG_BUF_EN];
71 struct usb_endpoint_descriptor *epd = &ep->desc;
72 unsigned int interval;
73 const char *unit;
74
75 interval = usb_decode_interval(epd, speed);
76 if (interval % 1000) {
77 unit = "us";
78 } else {
79 unit = "ms";
80 interval /= 1000;
81 }
82
83 snprintf(buf, DBG_BUF_EN, "%s ep%d%s %s, mpkt:%d, interval:%d/%d%s\n",
84 usb_speed_string(speed), usb_endpoint_num(epd),
85 usb_endpoint_dir_in(epd) ? "in" : "out",
86 usb_ep_type_string(usb_endpoint_type(epd)),
87 usb_endpoint_maxp(epd), epd->bInterval, interval, unit);
88
89 return buf;
90}
91
92static u32 get_bw_boundary(enum usb_device_speed speed)
93{
94 u32 boundary;
95
96 switch (speed) {
97 case USB_SPEED_SUPER_PLUS:
98 boundary = SSP_BW_BOUNDARY;
99 break;
100 case USB_SPEED_SUPER:
101 boundary = SS_BW_BOUNDARY;
102 break;
103 default:
104 boundary = HS_BW_BOUNDARY;
105 break;
106 }
107
108 return boundary;
109}
110
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115
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120
121
122
123static struct mu3h_sch_bw_info *
124get_bw_info(struct xhci_hcd_mtk *mtk, struct usb_device *udev,
125 struct usb_host_endpoint *ep)
126{
127 struct xhci_hcd *xhci = hcd_to_xhci(mtk->hcd);
128 struct xhci_virt_device *virt_dev;
129 int bw_index;
130
131 virt_dev = xhci->devs[udev->slot_id];
132
133 if (udev->speed >= USB_SPEED_SUPER) {
134 if (usb_endpoint_dir_out(&ep->desc))
135 bw_index = (virt_dev->real_port - 1) * 2;
136 else
137 bw_index = (virt_dev->real_port - 1) * 2 + 1;
138 } else {
139
140 bw_index = virt_dev->real_port + xhci->usb3_rhub.num_ports - 1;
141 }
142
143 return &mtk->sch_array[bw_index];
144}
145
146static u32 get_esit(struct xhci_ep_ctx *ep_ctx)
147{
148 u32 esit;
149
150 esit = 1 << CTX_TO_EP_INTERVAL(le32_to_cpu(ep_ctx->ep_info));
151 if (esit > XHCI_MTK_MAX_ESIT)
152 esit = XHCI_MTK_MAX_ESIT;
153
154 return esit;
155}
156
157static struct mu3h_sch_tt *find_tt(struct usb_device *udev)
158{
159 struct usb_tt *utt = udev->tt;
160 struct mu3h_sch_tt *tt, **tt_index, **ptt;
161 bool allocated_index = false;
162
163 if (!utt)
164 return NULL;
165
166
167
168
169
170
171 tt_index = NULL;
172 if (utt->multi) {
173 tt_index = utt->hcpriv;
174 if (!tt_index) {
175 tt_index = kcalloc(utt->hub->maxchild,
176 sizeof(*tt_index), GFP_KERNEL);
177 if (!tt_index)
178 return ERR_PTR(-ENOMEM);
179 utt->hcpriv = tt_index;
180 allocated_index = true;
181 }
182 ptt = &tt_index[udev->ttport - 1];
183 } else {
184 ptt = (struct mu3h_sch_tt **) &utt->hcpriv;
185 }
186
187 tt = *ptt;
188 if (!tt) {
189 tt = kzalloc(sizeof(*tt), GFP_KERNEL);
190 if (!tt) {
191 if (allocated_index) {
192 utt->hcpriv = NULL;
193 kfree(tt_index);
194 }
195 return ERR_PTR(-ENOMEM);
196 }
197 INIT_LIST_HEAD(&tt->ep_list);
198 *ptt = tt;
199 }
200
201 return tt;
202}
203
204
205static void drop_tt(struct usb_device *udev)
206{
207 struct usb_tt *utt = udev->tt;
208 struct mu3h_sch_tt *tt, **tt_index, **ptt;
209 int i, cnt;
210
211 if (!utt || !utt->hcpriv)
212 return;
213
214 cnt = 0;
215 if (utt->multi) {
216 tt_index = utt->hcpriv;
217 ptt = &tt_index[udev->ttport - 1];
218
219 for (i = 0; i < utt->hub->maxchild; ++i)
220 cnt += !!tt_index[i];
221 } else {
222 tt_index = NULL;
223 ptt = (struct mu3h_sch_tt **)&utt->hcpriv;
224 }
225
226 tt = *ptt;
227 if (!tt || !list_empty(&tt->ep_list))
228 return;
229
230 *ptt = NULL;
231 kfree(tt);
232
233 if (cnt == 1) {
234 utt->hcpriv = NULL;
235 kfree(tt_index);
236 }
237}
238
239static struct mu3h_sch_ep_info *create_sch_ep(struct usb_device *udev,
240 struct usb_host_endpoint *ep, struct xhci_ep_ctx *ep_ctx)
241{
242 struct mu3h_sch_ep_info *sch_ep;
243 struct mu3h_sch_tt *tt = NULL;
244 u32 len_bw_budget_table;
245 size_t mem_size;
246
247 if (is_fs_or_ls(udev->speed))
248 len_bw_budget_table = TT_MICROFRAMES_MAX;
249 else if ((udev->speed >= USB_SPEED_SUPER)
250 && usb_endpoint_xfer_isoc(&ep->desc))
251 len_bw_budget_table = get_esit(ep_ctx);
252 else
253 len_bw_budget_table = 1;
254
255 mem_size = sizeof(struct mu3h_sch_ep_info) +
256 len_bw_budget_table * sizeof(u32);
257 sch_ep = kzalloc(mem_size, GFP_KERNEL);
258 if (!sch_ep)
259 return ERR_PTR(-ENOMEM);
260
261 if (is_fs_or_ls(udev->speed)) {
262 tt = find_tt(udev);
263 if (IS_ERR(tt)) {
264 kfree(sch_ep);
265 return ERR_PTR(-ENOMEM);
266 }
267 }
268
269 sch_ep->sch_tt = tt;
270 sch_ep->ep = ep;
271 sch_ep->speed = udev->speed;
272 INIT_LIST_HEAD(&sch_ep->endpoint);
273 INIT_LIST_HEAD(&sch_ep->tt_endpoint);
274
275 return sch_ep;
276}
277
278static void setup_sch_info(struct xhci_ep_ctx *ep_ctx,
279 struct mu3h_sch_ep_info *sch_ep)
280{
281 u32 ep_type;
282 u32 maxpkt;
283 u32 max_burst;
284 u32 mult;
285 u32 esit_pkts;
286 u32 max_esit_payload;
287 u32 *bwb_table = sch_ep->bw_budget_table;
288 int i;
289
290 ep_type = CTX_TO_EP_TYPE(le32_to_cpu(ep_ctx->ep_info2));
291 maxpkt = MAX_PACKET_DECODED(le32_to_cpu(ep_ctx->ep_info2));
292 max_burst = CTX_TO_MAX_BURST(le32_to_cpu(ep_ctx->ep_info2));
293 mult = CTX_TO_EP_MULT(le32_to_cpu(ep_ctx->ep_info));
294 max_esit_payload =
295 (CTX_TO_MAX_ESIT_PAYLOAD_HI(
296 le32_to_cpu(ep_ctx->ep_info)) << 16) |
297 CTX_TO_MAX_ESIT_PAYLOAD(le32_to_cpu(ep_ctx->tx_info));
298
299 sch_ep->esit = get_esit(ep_ctx);
300 sch_ep->ep_type = ep_type;
301 sch_ep->maxpkt = maxpkt;
302 sch_ep->offset = 0;
303 sch_ep->burst_mode = 0;
304 sch_ep->repeat = 0;
305
306 if (sch_ep->speed == USB_SPEED_HIGH) {
307 sch_ep->cs_count = 0;
308
309
310
311
312
313
314 sch_ep->num_budget_microframes = 1;
315
316
317
318
319
320
321 sch_ep->pkts = max_burst + 1;
322 sch_ep->bw_cost_per_microframe = maxpkt * sch_ep->pkts;
323 bwb_table[0] = sch_ep->bw_cost_per_microframe;
324 } else if (sch_ep->speed >= USB_SPEED_SUPER) {
325
326 sch_ep->cs_count = 0;
327 sch_ep->burst_mode = 1;
328
329
330
331
332
333 esit_pkts = DIV_ROUND_UP(max_esit_payload, maxpkt);
334 if (esit_pkts == 0)
335 esit_pkts = (mult + 1) * (max_burst + 1);
336
337 if (ep_type == INT_IN_EP || ep_type == INT_OUT_EP) {
338 sch_ep->pkts = esit_pkts;
339 sch_ep->num_budget_microframes = 1;
340 bwb_table[0] = maxpkt * sch_ep->pkts;
341 }
342
343 if (ep_type == ISOC_IN_EP || ep_type == ISOC_OUT_EP) {
344
345 if (sch_ep->esit == 1)
346 sch_ep->pkts = esit_pkts;
347 else if (esit_pkts <= sch_ep->esit)
348 sch_ep->pkts = 1;
349 else
350 sch_ep->pkts = roundup_pow_of_two(esit_pkts)
351 / sch_ep->esit;
352
353 sch_ep->num_budget_microframes =
354 DIV_ROUND_UP(esit_pkts, sch_ep->pkts);
355
356 sch_ep->repeat = !!(sch_ep->num_budget_microframes > 1);
357 sch_ep->bw_cost_per_microframe = maxpkt * sch_ep->pkts;
358
359 for (i = 0; i < sch_ep->num_budget_microframes - 1; i++)
360 bwb_table[i] = sch_ep->bw_cost_per_microframe;
361
362
363 bwb_table[i] = maxpkt * esit_pkts
364 - i * sch_ep->bw_cost_per_microframe;
365 }
366 } else if (is_fs_or_ls(sch_ep->speed)) {
367 sch_ep->pkts = 1;
368
369
370
371
372
373 sch_ep->cs_count = DIV_ROUND_UP(maxpkt, FS_PAYLOAD_MAX);
374 sch_ep->num_budget_microframes = sch_ep->cs_count;
375 sch_ep->bw_cost_per_microframe =
376 (maxpkt < FS_PAYLOAD_MAX) ? maxpkt : FS_PAYLOAD_MAX;
377
378
379 if (ep_type == ISOC_OUT_EP) {
380 for (i = 0; i < sch_ep->num_budget_microframes; i++)
381 bwb_table[i] = sch_ep->bw_cost_per_microframe;
382 } else if (ep_type == INT_OUT_EP) {
383
384 bwb_table[0] = sch_ep->bw_cost_per_microframe;
385 } else {
386 bwb_table[0] = 0;
387 bwb_table[1] = 0;
388
389
390
391
392
393
394 for (i = 2; i < TT_MICROFRAMES_MAX; i++)
395 bwb_table[i] = sch_ep->bw_cost_per_microframe;
396 }
397 }
398}
399
400
401static u32 get_max_bw(struct mu3h_sch_bw_info *sch_bw,
402 struct mu3h_sch_ep_info *sch_ep, u32 offset)
403{
404 u32 num_esit;
405 u32 max_bw = 0;
406 u32 bw;
407 int i;
408 int j;
409
410 num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit;
411 for (i = 0; i < num_esit; i++) {
412 u32 base = offset + i * sch_ep->esit;
413
414 for (j = 0; j < sch_ep->num_budget_microframes; j++) {
415 bw = sch_bw->bus_bw[base + j] +
416 sch_ep->bw_budget_table[j];
417 if (bw > max_bw)
418 max_bw = bw;
419 }
420 }
421 return max_bw;
422}
423
424static void update_bus_bw(struct mu3h_sch_bw_info *sch_bw,
425 struct mu3h_sch_ep_info *sch_ep, bool used)
426{
427 u32 num_esit;
428 u32 base;
429 int i;
430 int j;
431
432 num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit;
433 for (i = 0; i < num_esit; i++) {
434 base = sch_ep->offset + i * sch_ep->esit;
435 for (j = 0; j < sch_ep->num_budget_microframes; j++) {
436 if (used)
437 sch_bw->bus_bw[base + j] +=
438 sch_ep->bw_budget_table[j];
439 else
440 sch_bw->bus_bw[base + j] -=
441 sch_ep->bw_budget_table[j];
442 }
443 }
444}
445
446static int check_fs_bus_bw(struct mu3h_sch_ep_info *sch_ep, int offset)
447{
448 struct mu3h_sch_tt *tt = sch_ep->sch_tt;
449 u32 num_esit, tmp;
450 int base;
451 int i, j;
452
453 num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit;
454 for (i = 0; i < num_esit; i++) {
455 base = offset + i * sch_ep->esit;
456
457
458
459
460
461 for (j = 0; j < sch_ep->cs_count; j++) {
462 tmp = tt->fs_bus_bw[base + j] + sch_ep->bw_cost_per_microframe;
463 if (tmp > FS_PAYLOAD_MAX)
464 return -ESCH_BW_OVERFLOW;
465 }
466 }
467
468 return 0;
469}
470
471static int check_sch_tt(struct mu3h_sch_ep_info *sch_ep, u32 offset)
472{
473 u32 extra_cs_count;
474 u32 start_ss, last_ss;
475 u32 start_cs, last_cs;
476
477 if (!sch_ep->sch_tt)
478 return 0;
479
480 start_ss = offset % 8;
481
482 if (sch_ep->ep_type == ISOC_OUT_EP) {
483 last_ss = start_ss + sch_ep->cs_count - 1;
484
485
486
487
488
489 if (!(start_ss == 7 || last_ss < 6))
490 return -ESCH_SS_Y6;
491
492 } else {
493 u32 cs_count = DIV_ROUND_UP(sch_ep->maxpkt, FS_PAYLOAD_MAX);
494
495
496
497
498
499 if (start_ss == 6)
500 return -ESCH_SS_Y6;
501
502
503 start_cs = (start_ss + 2) % 8;
504 last_cs = start_cs + cs_count - 1;
505
506 if (last_cs > 7)
507 return -ESCH_CS_OVERFLOW;
508
509 if (sch_ep->ep_type == ISOC_IN_EP)
510 extra_cs_count = (last_cs == 7) ? 1 : 2;
511 else
512 extra_cs_count = 1;
513
514 cs_count += extra_cs_count;
515 if (cs_count > 7)
516 cs_count = 7;
517
518 sch_ep->cs_count = cs_count;
519
520 sch_ep->num_budget_microframes = cs_count + 2;
521
522
523
524
525
526 if (sch_ep->num_budget_microframes > sch_ep->esit)
527 sch_ep->num_budget_microframes = sch_ep->esit;
528 }
529
530 return check_fs_bus_bw(sch_ep, offset);
531}
532
533static void update_sch_tt(struct mu3h_sch_ep_info *sch_ep, bool used)
534{
535 struct mu3h_sch_tt *tt = sch_ep->sch_tt;
536 u32 base, num_esit;
537 int bw_updated;
538 int i, j;
539
540 num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit;
541
542 if (used)
543 bw_updated = sch_ep->bw_cost_per_microframe;
544 else
545 bw_updated = -sch_ep->bw_cost_per_microframe;
546
547 for (i = 0; i < num_esit; i++) {
548 base = sch_ep->offset + i * sch_ep->esit;
549
550 for (j = 0; j < sch_ep->cs_count; j++)
551 tt->fs_bus_bw[base + j] += bw_updated;
552 }
553
554 if (used)
555 list_add_tail(&sch_ep->tt_endpoint, &tt->ep_list);
556 else
557 list_del(&sch_ep->tt_endpoint);
558}
559
560static int load_ep_bw(struct mu3h_sch_bw_info *sch_bw,
561 struct mu3h_sch_ep_info *sch_ep, bool loaded)
562{
563 if (sch_ep->sch_tt)
564 update_sch_tt(sch_ep, loaded);
565
566
567 update_bus_bw(sch_bw, sch_ep, loaded);
568 sch_ep->allocated = loaded;
569
570 return 0;
571}
572
573static u32 get_esit_boundary(struct mu3h_sch_ep_info *sch_ep)
574{
575 u32 boundary = sch_ep->esit;
576
577 if (sch_ep->sch_tt) {
578
579 if (sch_ep->ep_type != ISOC_OUT_EP)
580 boundary++;
581 else if (boundary > 1)
582 boundary--;
583 }
584
585 return boundary;
586}
587
588static int check_sch_bw(struct mu3h_sch_bw_info *sch_bw,
589 struct mu3h_sch_ep_info *sch_ep)
590{
591 const u32 esit_boundary = get_esit_boundary(sch_ep);
592 const u32 bw_boundary = get_bw_boundary(sch_ep->speed);
593 u32 offset;
594 u32 worst_bw;
595 u32 min_bw = ~0;
596 int min_index = -1;
597 int ret = 0;
598
599
600
601
602
603 for (offset = 0; offset < sch_ep->esit; offset++) {
604 ret = check_sch_tt(sch_ep, offset);
605 if (ret)
606 continue;
607
608 if ((offset + sch_ep->num_budget_microframes) > esit_boundary)
609 break;
610
611 worst_bw = get_max_bw(sch_bw, sch_ep, offset);
612 if (worst_bw > bw_boundary)
613 continue;
614
615 if (min_bw > worst_bw) {
616 min_bw = worst_bw;
617 min_index = offset;
618 }
619
620
621 if (sch_ep->sch_tt && min_index >= 0)
622 break;
623
624 if (min_bw == 0)
625 break;
626 }
627
628 if (min_index < 0)
629 return ret ? ret : -ESCH_BW_OVERFLOW;
630
631 sch_ep->offset = min_index;
632
633 return load_ep_bw(sch_bw, sch_ep, true);
634}
635
636static void destroy_sch_ep(struct usb_device *udev,
637 struct mu3h_sch_bw_info *sch_bw, struct mu3h_sch_ep_info *sch_ep)
638{
639
640 if (sch_ep->allocated)
641 load_ep_bw(sch_bw, sch_ep, false);
642
643 if (sch_ep->sch_tt)
644 drop_tt(udev);
645
646 list_del(&sch_ep->endpoint);
647 kfree(sch_ep);
648}
649
650static bool need_bw_sch(struct usb_host_endpoint *ep,
651 enum usb_device_speed speed, int has_tt)
652{
653
654 if (usb_endpoint_xfer_control(&ep->desc)
655 || usb_endpoint_xfer_bulk(&ep->desc))
656 return false;
657
658
659
660
661
662
663 if (is_fs_or_ls(speed) && !has_tt)
664 return false;
665
666
667 if (usb_endpoint_maxp(&ep->desc) == 0)
668 return false;
669
670 return true;
671}
672
673int xhci_mtk_sch_init(struct xhci_hcd_mtk *mtk)
674{
675 struct xhci_hcd *xhci = hcd_to_xhci(mtk->hcd);
676 struct mu3h_sch_bw_info *sch_array;
677 int num_usb_bus;
678 int i;
679
680
681 num_usb_bus = xhci->usb3_rhub.num_ports * 2 + xhci->usb2_rhub.num_ports;
682
683 sch_array = kcalloc(num_usb_bus, sizeof(*sch_array), GFP_KERNEL);
684 if (sch_array == NULL)
685 return -ENOMEM;
686
687 for (i = 0; i < num_usb_bus; i++)
688 INIT_LIST_HEAD(&sch_array[i].bw_ep_list);
689
690 mtk->sch_array = sch_array;
691
692 INIT_LIST_HEAD(&mtk->bw_ep_chk_list);
693
694 return 0;
695}
696
697void xhci_mtk_sch_exit(struct xhci_hcd_mtk *mtk)
698{
699 kfree(mtk->sch_array);
700}
701
702static int add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
703 struct usb_host_endpoint *ep)
704{
705 struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
706 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
707 struct xhci_ep_ctx *ep_ctx;
708 struct xhci_virt_device *virt_dev;
709 struct mu3h_sch_ep_info *sch_ep;
710 unsigned int ep_index;
711
712 virt_dev = xhci->devs[udev->slot_id];
713 ep_index = xhci_get_endpoint_index(&ep->desc);
714 ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);
715
716 xhci_dbg(xhci, "%s %s\n", __func__, decode_ep(ep, udev->speed));
717
718 if (!need_bw_sch(ep, udev->speed, !!virt_dev->tt_info)) {
719
720
721
722
723 if (usb_endpoint_xfer_int(&ep->desc)
724 || usb_endpoint_xfer_isoc(&ep->desc))
725 ep_ctx->reserved[0] = cpu_to_le32(EP_BPKTS(1));
726
727 return 0;
728 }
729
730 sch_ep = create_sch_ep(udev, ep, ep_ctx);
731 if (IS_ERR_OR_NULL(sch_ep))
732 return -ENOMEM;
733
734 setup_sch_info(ep_ctx, sch_ep);
735
736 list_add_tail(&sch_ep->endpoint, &mtk->bw_ep_chk_list);
737
738 return 0;
739}
740
741static void drop_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
742 struct usb_host_endpoint *ep)
743{
744 struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
745 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
746 struct xhci_virt_device *virt_dev;
747 struct mu3h_sch_bw_info *sch_bw;
748 struct mu3h_sch_ep_info *sch_ep, *tmp;
749
750 virt_dev = xhci->devs[udev->slot_id];
751
752 xhci_dbg(xhci, "%s %s\n", __func__, decode_ep(ep, udev->speed));
753
754 if (!need_bw_sch(ep, udev->speed, !!virt_dev->tt_info))
755 return;
756
757 sch_bw = get_bw_info(mtk, udev, ep);
758
759 list_for_each_entry_safe(sch_ep, tmp, &sch_bw->bw_ep_list, endpoint) {
760 if (sch_ep->ep == ep) {
761 destroy_sch_ep(udev, sch_bw, sch_ep);
762 break;
763 }
764 }
765}
766
767int xhci_mtk_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
768{
769 struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
770 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
771 struct xhci_virt_device *virt_dev = xhci->devs[udev->slot_id];
772 struct mu3h_sch_bw_info *sch_bw;
773 struct mu3h_sch_ep_info *sch_ep, *tmp;
774 int ret;
775
776 xhci_dbg(xhci, "%s() udev %s\n", __func__, dev_name(&udev->dev));
777
778 list_for_each_entry(sch_ep, &mtk->bw_ep_chk_list, endpoint) {
779 sch_bw = get_bw_info(mtk, udev, sch_ep->ep);
780
781 ret = check_sch_bw(sch_bw, sch_ep);
782 if (ret) {
783 xhci_err(xhci, "Not enough bandwidth! (%s)\n",
784 sch_error_string(-ret));
785 return -ENOSPC;
786 }
787 }
788
789 list_for_each_entry_safe(sch_ep, tmp, &mtk->bw_ep_chk_list, endpoint) {
790 struct xhci_ep_ctx *ep_ctx;
791 struct usb_host_endpoint *ep = sch_ep->ep;
792 unsigned int ep_index = xhci_get_endpoint_index(&ep->desc);
793
794 sch_bw = get_bw_info(mtk, udev, ep);
795 list_move_tail(&sch_ep->endpoint, &sch_bw->bw_ep_list);
796
797 ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);
798 ep_ctx->reserved[0] = cpu_to_le32(EP_BPKTS(sch_ep->pkts)
799 | EP_BCSCOUNT(sch_ep->cs_count)
800 | EP_BBM(sch_ep->burst_mode));
801 ep_ctx->reserved[1] = cpu_to_le32(EP_BOFFSET(sch_ep->offset)
802 | EP_BREPEAT(sch_ep->repeat));
803
804 xhci_dbg(xhci, " PKTS:%x, CSCOUNT:%x, BM:%x, OFFSET:%x, REPEAT:%x\n",
805 sch_ep->pkts, sch_ep->cs_count, sch_ep->burst_mode,
806 sch_ep->offset, sch_ep->repeat);
807 }
808
809 return xhci_check_bandwidth(hcd, udev);
810}
811
812void xhci_mtk_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
813{
814 struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
815 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
816 struct mu3h_sch_bw_info *sch_bw;
817 struct mu3h_sch_ep_info *sch_ep, *tmp;
818
819 xhci_dbg(xhci, "%s() udev %s\n", __func__, dev_name(&udev->dev));
820
821 list_for_each_entry_safe(sch_ep, tmp, &mtk->bw_ep_chk_list, endpoint) {
822 sch_bw = get_bw_info(mtk, udev, sch_ep->ep);
823 destroy_sch_ep(udev, sch_bw, sch_ep);
824 }
825
826 xhci_reset_bandwidth(hcd, udev);
827}
828
829int xhci_mtk_add_ep(struct usb_hcd *hcd, struct usb_device *udev,
830 struct usb_host_endpoint *ep)
831{
832 int ret;
833
834 ret = xhci_add_endpoint(hcd, udev, ep);
835 if (ret)
836 return ret;
837
838 if (ep->hcpriv)
839 ret = add_ep_quirk(hcd, udev, ep);
840
841 return ret;
842}
843
844int xhci_mtk_drop_ep(struct usb_hcd *hcd, struct usb_device *udev,
845 struct usb_host_endpoint *ep)
846{
847 int ret;
848
849 ret = xhci_drop_endpoint(hcd, udev, ep);
850 if (ret)
851 return ret;
852
853 if (ep->hcpriv)
854 drop_ep_quirk(hcd, udev, ep);
855
856 return 0;
857}
858