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7
8
9#define pr_fmt(fmt) "%s: " fmt, __func__
10
11#include <linux/bitmap.h>
12#include <linux/debugfs.h>
13#include <linux/export.h>
14#include <linux/io.h>
15#include <linux/kernel.h>
16#include <linux/mailbox_client.h>
17#include <linux/module.h>
18#include <linux/of_device.h>
19#include <linux/semaphore.h>
20#include <linux/slab.h>
21#include <linux/soc/ti/ti-msgmgr.h>
22#include <linux/soc/ti/ti_sci_protocol.h>
23#include <linux/reboot.h>
24
25#include "ti_sci.h"
26
27
28static LIST_HEAD(ti_sci_list);
29
30static DEFINE_MUTEX(ti_sci_list_mutex);
31
32
33
34
35
36
37
38
39
40
41
42struct ti_sci_xfer {
43 struct ti_msgmgr_message tx_message;
44 u8 rx_len;
45 u8 *xfer_buf;
46 struct completion done;
47};
48
49
50
51
52
53
54
55
56
57
58
59struct ti_sci_xfers_info {
60 struct semaphore sem_xfer_count;
61 struct ti_sci_xfer *xfer_block;
62 unsigned long *xfer_alloc_table;
63
64 spinlock_t xfer_lock;
65};
66
67
68
69
70
71
72
73
74
75struct ti_sci_desc {
76 u8 default_host_id;
77 int max_rx_timeout_ms;
78 int max_msgs;
79 int max_msg_size;
80};
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100struct ti_sci_info {
101 struct device *dev;
102 struct notifier_block nb;
103 const struct ti_sci_desc *desc;
104 struct dentry *d;
105 void __iomem *debug_region;
106 char *debug_buffer;
107 size_t debug_region_size;
108 struct ti_sci_handle handle;
109 struct mbox_client cl;
110 struct mbox_chan *chan_tx;
111 struct mbox_chan *chan_rx;
112 struct ti_sci_xfers_info minfo;
113 struct list_head node;
114 u8 host_id;
115
116 int users;
117
118};
119
120#define cl_to_ti_sci_info(c) container_of(c, struct ti_sci_info, cl)
121#define handle_to_ti_sci_info(h) container_of(h, struct ti_sci_info, handle)
122#define reboot_to_ti_sci_info(n) container_of(n, struct ti_sci_info, nb)
123
124#ifdef CONFIG_DEBUG_FS
125
126
127
128
129
130
131
132
133static int ti_sci_debug_show(struct seq_file *s, void *unused)
134{
135 struct ti_sci_info *info = s->private;
136
137 memcpy_fromio(info->debug_buffer, info->debug_region,
138 info->debug_region_size);
139
140
141
142
143
144
145 seq_puts(s, info->debug_buffer);
146 return 0;
147}
148
149
150DEFINE_SHOW_ATTRIBUTE(ti_sci_debug);
151
152
153
154
155
156
157
158
159static int ti_sci_debugfs_create(struct platform_device *pdev,
160 struct ti_sci_info *info)
161{
162 struct device *dev = &pdev->dev;
163 struct resource *res;
164 char debug_name[50] = "ti_sci_debug@";
165
166
167 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
168 "debug_messages");
169 info->debug_region = devm_ioremap_resource(dev, res);
170 if (IS_ERR(info->debug_region))
171 return 0;
172 info->debug_region_size = resource_size(res);
173
174 info->debug_buffer = devm_kcalloc(dev, info->debug_region_size + 1,
175 sizeof(char), GFP_KERNEL);
176 if (!info->debug_buffer)
177 return -ENOMEM;
178
179 info->debug_buffer[info->debug_region_size] = 0;
180
181 info->d = debugfs_create_file(strncat(debug_name, dev_name(dev),
182 sizeof(debug_name) -
183 sizeof("ti_sci_debug@")),
184 0444, NULL, info, &ti_sci_debug_fops);
185 if (IS_ERR(info->d))
186 return PTR_ERR(info->d);
187
188 dev_dbg(dev, "Debug region => %p, size = %zu bytes, resource: %pr\n",
189 info->debug_region, info->debug_region_size, res);
190 return 0;
191}
192
193
194
195
196
197
198static void ti_sci_debugfs_destroy(struct platform_device *pdev,
199 struct ti_sci_info *info)
200{
201 if (IS_ERR(info->debug_region))
202 return;
203
204 debugfs_remove(info->d);
205}
206#else
207static inline int ti_sci_debugfs_create(struct platform_device *dev,
208 struct ti_sci_info *info)
209{
210 return 0;
211}
212
213static inline void ti_sci_debugfs_destroy(struct platform_device *dev,
214 struct ti_sci_info *info)
215{
216}
217#endif
218
219
220
221
222
223
224static inline void ti_sci_dump_header_dbg(struct device *dev,
225 struct ti_sci_msg_hdr *hdr)
226{
227 dev_dbg(dev, "MSGHDR:type=0x%04x host=0x%02x seq=0x%02x flags=0x%08x\n",
228 hdr->type, hdr->host, hdr->seq, hdr->flags);
229}
230
231
232
233
234
235
236
237
238
239
240
241
242static void ti_sci_rx_callback(struct mbox_client *cl, void *m)
243{
244 struct ti_sci_info *info = cl_to_ti_sci_info(cl);
245 struct device *dev = info->dev;
246 struct ti_sci_xfers_info *minfo = &info->minfo;
247 struct ti_msgmgr_message *mbox_msg = m;
248 struct ti_sci_msg_hdr *hdr = (struct ti_sci_msg_hdr *)mbox_msg->buf;
249 struct ti_sci_xfer *xfer;
250 u8 xfer_id;
251
252 xfer_id = hdr->seq;
253
254
255
256
257
258 if (!test_bit(xfer_id, minfo->xfer_alloc_table)) {
259 dev_err(dev, "Message for %d is not expected!\n", xfer_id);
260 return;
261 }
262
263 xfer = &minfo->xfer_block[xfer_id];
264
265
266 if (mbox_msg->len > info->desc->max_msg_size) {
267 dev_err(dev, "Unable to handle %zu xfer(max %d)\n",
268 mbox_msg->len, info->desc->max_msg_size);
269 ti_sci_dump_header_dbg(dev, hdr);
270 return;
271 }
272 if (mbox_msg->len < xfer->rx_len) {
273 dev_err(dev, "Recv xfer %zu < expected %d length\n",
274 mbox_msg->len, xfer->rx_len);
275 ti_sci_dump_header_dbg(dev, hdr);
276 return;
277 }
278
279 ti_sci_dump_header_dbg(dev, hdr);
280
281 memcpy(xfer->xfer_buf, mbox_msg->buf, xfer->rx_len);
282 complete(&xfer->done);
283}
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302static struct ti_sci_xfer *ti_sci_get_one_xfer(struct ti_sci_info *info,
303 u16 msg_type, u32 msg_flags,
304 size_t tx_message_size,
305 size_t rx_message_size)
306{
307 struct ti_sci_xfers_info *minfo = &info->minfo;
308 struct ti_sci_xfer *xfer;
309 struct ti_sci_msg_hdr *hdr;
310 unsigned long flags;
311 unsigned long bit_pos;
312 u8 xfer_id;
313 int ret;
314 int timeout;
315
316
317 if (rx_message_size > info->desc->max_msg_size ||
318 tx_message_size > info->desc->max_msg_size ||
319 rx_message_size < sizeof(*hdr) || tx_message_size < sizeof(*hdr))
320 return ERR_PTR(-ERANGE);
321
322
323
324
325
326
327 timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms) * 5;
328 ret = down_timeout(&minfo->sem_xfer_count, timeout);
329 if (ret < 0)
330 return ERR_PTR(ret);
331
332
333 spin_lock_irqsave(&minfo->xfer_lock, flags);
334 bit_pos = find_first_zero_bit(minfo->xfer_alloc_table,
335 info->desc->max_msgs);
336 set_bit(bit_pos, minfo->xfer_alloc_table);
337 spin_unlock_irqrestore(&minfo->xfer_lock, flags);
338
339
340
341
342
343
344
345
346 xfer_id = (u8)bit_pos;
347
348 xfer = &minfo->xfer_block[xfer_id];
349
350 hdr = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
351 xfer->tx_message.len = tx_message_size;
352 xfer->rx_len = (u8)rx_message_size;
353
354 reinit_completion(&xfer->done);
355
356 hdr->seq = xfer_id;
357 hdr->type = msg_type;
358 hdr->host = info->host_id;
359 hdr->flags = msg_flags;
360
361 return xfer;
362}
363
364
365
366
367
368
369
370
371static void ti_sci_put_one_xfer(struct ti_sci_xfers_info *minfo,
372 struct ti_sci_xfer *xfer)
373{
374 unsigned long flags;
375 struct ti_sci_msg_hdr *hdr;
376 u8 xfer_id;
377
378 hdr = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
379 xfer_id = hdr->seq;
380
381
382
383
384
385
386 spin_lock_irqsave(&minfo->xfer_lock, flags);
387 clear_bit(xfer_id, minfo->xfer_alloc_table);
388 spin_unlock_irqrestore(&minfo->xfer_lock, flags);
389
390
391 up(&minfo->sem_xfer_count);
392}
393
394
395
396
397
398
399
400
401
402
403static inline int ti_sci_do_xfer(struct ti_sci_info *info,
404 struct ti_sci_xfer *xfer)
405{
406 int ret;
407 int timeout;
408 struct device *dev = info->dev;
409
410 ret = mbox_send_message(info->chan_tx, &xfer->tx_message);
411 if (ret < 0)
412 return ret;
413
414 ret = 0;
415
416
417 timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms);
418 if (!wait_for_completion_timeout(&xfer->done, timeout)) {
419 dev_err(dev, "Mbox timedout in resp(caller: %pS)\n",
420 (void *)_RET_IP_);
421 ret = -ETIMEDOUT;
422 }
423
424
425
426
427
428
429 mbox_client_txdone(info->chan_tx, ret);
430
431 return ret;
432}
433
434
435
436
437
438
439
440
441
442static int ti_sci_cmd_get_revision(struct ti_sci_info *info)
443{
444 struct device *dev = info->dev;
445 struct ti_sci_handle *handle = &info->handle;
446 struct ti_sci_version_info *ver = &handle->version;
447 struct ti_sci_msg_resp_version *rev_info;
448 struct ti_sci_xfer *xfer;
449 int ret;
450
451 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_VERSION,
452 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
453 sizeof(struct ti_sci_msg_hdr),
454 sizeof(*rev_info));
455 if (IS_ERR(xfer)) {
456 ret = PTR_ERR(xfer);
457 dev_err(dev, "Message alloc failed(%d)\n", ret);
458 return ret;
459 }
460
461 rev_info = (struct ti_sci_msg_resp_version *)xfer->xfer_buf;
462
463 ret = ti_sci_do_xfer(info, xfer);
464 if (ret) {
465 dev_err(dev, "Mbox send fail %d\n", ret);
466 goto fail;
467 }
468
469 ver->abi_major = rev_info->abi_major;
470 ver->abi_minor = rev_info->abi_minor;
471 ver->firmware_revision = rev_info->firmware_revision;
472 strncpy(ver->firmware_description, rev_info->firmware_description,
473 sizeof(ver->firmware_description));
474
475fail:
476 ti_sci_put_one_xfer(&info->minfo, xfer);
477 return ret;
478}
479
480
481
482
483
484
485
486static inline bool ti_sci_is_response_ack(void *r)
487{
488 struct ti_sci_msg_hdr *hdr = r;
489
490 return hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK ? true : false;
491}
492
493
494
495
496
497
498
499
500
501
502static int ti_sci_set_device_state(const struct ti_sci_handle *handle,
503 u32 id, u32 flags, u8 state)
504{
505 struct ti_sci_info *info;
506 struct ti_sci_msg_req_set_device_state *req;
507 struct ti_sci_msg_hdr *resp;
508 struct ti_sci_xfer *xfer;
509 struct device *dev;
510 int ret = 0;
511
512 if (IS_ERR(handle))
513 return PTR_ERR(handle);
514 if (!handle)
515 return -EINVAL;
516
517 info = handle_to_ti_sci_info(handle);
518 dev = info->dev;
519
520 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_DEVICE_STATE,
521 flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
522 sizeof(*req), sizeof(*resp));
523 if (IS_ERR(xfer)) {
524 ret = PTR_ERR(xfer);
525 dev_err(dev, "Message alloc failed(%d)\n", ret);
526 return ret;
527 }
528 req = (struct ti_sci_msg_req_set_device_state *)xfer->xfer_buf;
529 req->id = id;
530 req->state = state;
531
532 ret = ti_sci_do_xfer(info, xfer);
533 if (ret) {
534 dev_err(dev, "Mbox send fail %d\n", ret);
535 goto fail;
536 }
537
538 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
539
540 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
541
542fail:
543 ti_sci_put_one_xfer(&info->minfo, xfer);
544
545 return ret;
546}
547
548
549
550
551
552
553
554
555
556
557
558
559static int ti_sci_get_device_state(const struct ti_sci_handle *handle,
560 u32 id, u32 *clcnt, u32 *resets,
561 u8 *p_state, u8 *c_state)
562{
563 struct ti_sci_info *info;
564 struct ti_sci_msg_req_get_device_state *req;
565 struct ti_sci_msg_resp_get_device_state *resp;
566 struct ti_sci_xfer *xfer;
567 struct device *dev;
568 int ret = 0;
569
570 if (IS_ERR(handle))
571 return PTR_ERR(handle);
572 if (!handle)
573 return -EINVAL;
574
575 if (!clcnt && !resets && !p_state && !c_state)
576 return -EINVAL;
577
578 info = handle_to_ti_sci_info(handle);
579 dev = info->dev;
580
581 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_DEVICE_STATE,
582 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
583 sizeof(*req), sizeof(*resp));
584 if (IS_ERR(xfer)) {
585 ret = PTR_ERR(xfer);
586 dev_err(dev, "Message alloc failed(%d)\n", ret);
587 return ret;
588 }
589 req = (struct ti_sci_msg_req_get_device_state *)xfer->xfer_buf;
590 req->id = id;
591
592 ret = ti_sci_do_xfer(info, xfer);
593 if (ret) {
594 dev_err(dev, "Mbox send fail %d\n", ret);
595 goto fail;
596 }
597
598 resp = (struct ti_sci_msg_resp_get_device_state *)xfer->xfer_buf;
599 if (!ti_sci_is_response_ack(resp)) {
600 ret = -ENODEV;
601 goto fail;
602 }
603
604 if (clcnt)
605 *clcnt = resp->context_loss_count;
606 if (resets)
607 *resets = resp->resets;
608 if (p_state)
609 *p_state = resp->programmed_state;
610 if (c_state)
611 *c_state = resp->current_state;
612fail:
613 ti_sci_put_one_xfer(&info->minfo, xfer);
614
615 return ret;
616}
617
618
619
620
621
622
623
624
625
626
627
628
629
630static int ti_sci_cmd_get_device(const struct ti_sci_handle *handle, u32 id)
631{
632 return ti_sci_set_device_state(handle, id, 0,
633 MSG_DEVICE_SW_STATE_ON);
634}
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649static int ti_sci_cmd_get_device_exclusive(const struct ti_sci_handle *handle,
650 u32 id)
651{
652 return ti_sci_set_device_state(handle, id,
653 MSG_FLAG_DEVICE_EXCLUSIVE,
654 MSG_DEVICE_SW_STATE_ON);
655}
656
657
658
659
660
661
662
663
664
665
666
667
668static int ti_sci_cmd_idle_device(const struct ti_sci_handle *handle, u32 id)
669{
670 return ti_sci_set_device_state(handle, id, 0,
671 MSG_DEVICE_SW_STATE_RETENTION);
672}
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687static int ti_sci_cmd_idle_device_exclusive(const struct ti_sci_handle *handle,
688 u32 id)
689{
690 return ti_sci_set_device_state(handle, id,
691 MSG_FLAG_DEVICE_EXCLUSIVE,
692 MSG_DEVICE_SW_STATE_RETENTION);
693}
694
695
696
697
698
699
700
701
702
703
704
705
706static int ti_sci_cmd_put_device(const struct ti_sci_handle *handle, u32 id)
707{
708 return ti_sci_set_device_state(handle, id,
709 0, MSG_DEVICE_SW_STATE_AUTO_OFF);
710}
711
712
713
714
715
716
717
718
719
720static int ti_sci_cmd_dev_is_valid(const struct ti_sci_handle *handle, u32 id)
721{
722 u8 unused;
723
724
725 return ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &unused);
726}
727
728
729
730
731
732
733
734
735
736static int ti_sci_cmd_dev_get_clcnt(const struct ti_sci_handle *handle, u32 id,
737 u32 *count)
738{
739 return ti_sci_get_device_state(handle, id, count, NULL, NULL, NULL);
740}
741
742
743
744
745
746
747
748
749
750static int ti_sci_cmd_dev_is_idle(const struct ti_sci_handle *handle, u32 id,
751 bool *r_state)
752{
753 int ret;
754 u8 state;
755
756 if (!r_state)
757 return -EINVAL;
758
759 ret = ti_sci_get_device_state(handle, id, NULL, NULL, &state, NULL);
760 if (ret)
761 return ret;
762
763 *r_state = (state == MSG_DEVICE_SW_STATE_RETENTION);
764
765 return 0;
766}
767
768
769
770
771
772
773
774
775
776
777static int ti_sci_cmd_dev_is_stop(const struct ti_sci_handle *handle, u32 id,
778 bool *r_state, bool *curr_state)
779{
780 int ret;
781 u8 p_state, c_state;
782
783 if (!r_state && !curr_state)
784 return -EINVAL;
785
786 ret =
787 ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state);
788 if (ret)
789 return ret;
790
791 if (r_state)
792 *r_state = (p_state == MSG_DEVICE_SW_STATE_AUTO_OFF);
793 if (curr_state)
794 *curr_state = (c_state == MSG_DEVICE_HW_STATE_OFF);
795
796 return 0;
797}
798
799
800
801
802
803
804
805
806
807
808static int ti_sci_cmd_dev_is_on(const struct ti_sci_handle *handle, u32 id,
809 bool *r_state, bool *curr_state)
810{
811 int ret;
812 u8 p_state, c_state;
813
814 if (!r_state && !curr_state)
815 return -EINVAL;
816
817 ret =
818 ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state);
819 if (ret)
820 return ret;
821
822 if (r_state)
823 *r_state = (p_state == MSG_DEVICE_SW_STATE_ON);
824 if (curr_state)
825 *curr_state = (c_state == MSG_DEVICE_HW_STATE_ON);
826
827 return 0;
828}
829
830
831
832
833
834
835
836
837
838static int ti_sci_cmd_dev_is_trans(const struct ti_sci_handle *handle, u32 id,
839 bool *curr_state)
840{
841 int ret;
842 u8 state;
843
844 if (!curr_state)
845 return -EINVAL;
846
847 ret = ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &state);
848 if (ret)
849 return ret;
850
851 *curr_state = (state == MSG_DEVICE_HW_STATE_TRANS);
852
853 return 0;
854}
855
856
857
858
859
860
861
862
863
864
865static int ti_sci_cmd_set_device_resets(const struct ti_sci_handle *handle,
866 u32 id, u32 reset_state)
867{
868 struct ti_sci_info *info;
869 struct ti_sci_msg_req_set_device_resets *req;
870 struct ti_sci_msg_hdr *resp;
871 struct ti_sci_xfer *xfer;
872 struct device *dev;
873 int ret = 0;
874
875 if (IS_ERR(handle))
876 return PTR_ERR(handle);
877 if (!handle)
878 return -EINVAL;
879
880 info = handle_to_ti_sci_info(handle);
881 dev = info->dev;
882
883 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_DEVICE_RESETS,
884 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
885 sizeof(*req), sizeof(*resp));
886 if (IS_ERR(xfer)) {
887 ret = PTR_ERR(xfer);
888 dev_err(dev, "Message alloc failed(%d)\n", ret);
889 return ret;
890 }
891 req = (struct ti_sci_msg_req_set_device_resets *)xfer->xfer_buf;
892 req->id = id;
893 req->resets = reset_state;
894
895 ret = ti_sci_do_xfer(info, xfer);
896 if (ret) {
897 dev_err(dev, "Mbox send fail %d\n", ret);
898 goto fail;
899 }
900
901 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
902
903 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
904
905fail:
906 ti_sci_put_one_xfer(&info->minfo, xfer);
907
908 return ret;
909}
910
911
912
913
914
915
916
917
918
919
920static int ti_sci_cmd_get_device_resets(const struct ti_sci_handle *handle,
921 u32 id, u32 *reset_state)
922{
923 return ti_sci_get_device_state(handle, id, NULL, reset_state, NULL,
924 NULL);
925}
926
927
928
929
930
931
932
933
934
935
936
937
938
939static int ti_sci_set_clock_state(const struct ti_sci_handle *handle,
940 u32 dev_id, u32 clk_id,
941 u32 flags, u8 state)
942{
943 struct ti_sci_info *info;
944 struct ti_sci_msg_req_set_clock_state *req;
945 struct ti_sci_msg_hdr *resp;
946 struct ti_sci_xfer *xfer;
947 struct device *dev;
948 int ret = 0;
949
950 if (IS_ERR(handle))
951 return PTR_ERR(handle);
952 if (!handle)
953 return -EINVAL;
954
955 info = handle_to_ti_sci_info(handle);
956 dev = info->dev;
957
958 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_STATE,
959 flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
960 sizeof(*req), sizeof(*resp));
961 if (IS_ERR(xfer)) {
962 ret = PTR_ERR(xfer);
963 dev_err(dev, "Message alloc failed(%d)\n", ret);
964 return ret;
965 }
966 req = (struct ti_sci_msg_req_set_clock_state *)xfer->xfer_buf;
967 req->dev_id = dev_id;
968 if (clk_id < 255) {
969 req->clk_id = clk_id;
970 } else {
971 req->clk_id = 255;
972 req->clk_id_32 = clk_id;
973 }
974 req->request_state = state;
975
976 ret = ti_sci_do_xfer(info, xfer);
977 if (ret) {
978 dev_err(dev, "Mbox send fail %d\n", ret);
979 goto fail;
980 }
981
982 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
983
984 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
985
986fail:
987 ti_sci_put_one_xfer(&info->minfo, xfer);
988
989 return ret;
990}
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004static int ti_sci_cmd_get_clock_state(const struct ti_sci_handle *handle,
1005 u32 dev_id, u32 clk_id,
1006 u8 *programmed_state, u8 *current_state)
1007{
1008 struct ti_sci_info *info;
1009 struct ti_sci_msg_req_get_clock_state *req;
1010 struct ti_sci_msg_resp_get_clock_state *resp;
1011 struct ti_sci_xfer *xfer;
1012 struct device *dev;
1013 int ret = 0;
1014
1015 if (IS_ERR(handle))
1016 return PTR_ERR(handle);
1017 if (!handle)
1018 return -EINVAL;
1019
1020 if (!programmed_state && !current_state)
1021 return -EINVAL;
1022
1023 info = handle_to_ti_sci_info(handle);
1024 dev = info->dev;
1025
1026 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_STATE,
1027 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1028 sizeof(*req), sizeof(*resp));
1029 if (IS_ERR(xfer)) {
1030 ret = PTR_ERR(xfer);
1031 dev_err(dev, "Message alloc failed(%d)\n", ret);
1032 return ret;
1033 }
1034 req = (struct ti_sci_msg_req_get_clock_state *)xfer->xfer_buf;
1035 req->dev_id = dev_id;
1036 if (clk_id < 255) {
1037 req->clk_id = clk_id;
1038 } else {
1039 req->clk_id = 255;
1040 req->clk_id_32 = clk_id;
1041 }
1042
1043 ret = ti_sci_do_xfer(info, xfer);
1044 if (ret) {
1045 dev_err(dev, "Mbox send fail %d\n", ret);
1046 goto fail;
1047 }
1048
1049 resp = (struct ti_sci_msg_resp_get_clock_state *)xfer->xfer_buf;
1050
1051 if (!ti_sci_is_response_ack(resp)) {
1052 ret = -ENODEV;
1053 goto fail;
1054 }
1055
1056 if (programmed_state)
1057 *programmed_state = resp->programmed_state;
1058 if (current_state)
1059 *current_state = resp->current_state;
1060
1061fail:
1062 ti_sci_put_one_xfer(&info->minfo, xfer);
1063
1064 return ret;
1065}
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080static int ti_sci_cmd_get_clock(const struct ti_sci_handle *handle, u32 dev_id,
1081 u32 clk_id, bool needs_ssc,
1082 bool can_change_freq, bool enable_input_term)
1083{
1084 u32 flags = 0;
1085
1086 flags |= needs_ssc ? MSG_FLAG_CLOCK_ALLOW_SSC : 0;
1087 flags |= can_change_freq ? MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE : 0;
1088 flags |= enable_input_term ? MSG_FLAG_CLOCK_INPUT_TERM : 0;
1089
1090 return ti_sci_set_clock_state(handle, dev_id, clk_id, flags,
1091 MSG_CLOCK_SW_STATE_REQ);
1092}
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle,
1107 u32 dev_id, u32 clk_id)
1108{
1109 return ti_sci_set_clock_state(handle, dev_id, clk_id,
1110 MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE,
1111 MSG_CLOCK_SW_STATE_UNREQ);
1112}
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126static int ti_sci_cmd_put_clock(const struct ti_sci_handle *handle,
1127 u32 dev_id, u32 clk_id)
1128{
1129 return ti_sci_set_clock_state(handle, dev_id, clk_id,
1130 MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE,
1131 MSG_CLOCK_SW_STATE_AUTO);
1132}
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145static int ti_sci_cmd_clk_is_auto(const struct ti_sci_handle *handle,
1146 u32 dev_id, u32 clk_id, bool *req_state)
1147{
1148 u8 state = 0;
1149 int ret;
1150
1151 if (!req_state)
1152 return -EINVAL;
1153
1154 ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, &state, NULL);
1155 if (ret)
1156 return ret;
1157
1158 *req_state = (state == MSG_CLOCK_SW_STATE_AUTO);
1159 return 0;
1160}
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174static int ti_sci_cmd_clk_is_on(const struct ti_sci_handle *handle, u32 dev_id,
1175 u32 clk_id, bool *req_state, bool *curr_state)
1176{
1177 u8 c_state = 0, r_state = 0;
1178 int ret;
1179
1180 if (!req_state && !curr_state)
1181 return -EINVAL;
1182
1183 ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id,
1184 &r_state, &c_state);
1185 if (ret)
1186 return ret;
1187
1188 if (req_state)
1189 *req_state = (r_state == MSG_CLOCK_SW_STATE_REQ);
1190 if (curr_state)
1191 *curr_state = (c_state == MSG_CLOCK_HW_STATE_READY);
1192 return 0;
1193}
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207static int ti_sci_cmd_clk_is_off(const struct ti_sci_handle *handle, u32 dev_id,
1208 u32 clk_id, bool *req_state, bool *curr_state)
1209{
1210 u8 c_state = 0, r_state = 0;
1211 int ret;
1212
1213 if (!req_state && !curr_state)
1214 return -EINVAL;
1215
1216 ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id,
1217 &r_state, &c_state);
1218 if (ret)
1219 return ret;
1220
1221 if (req_state)
1222 *req_state = (r_state == MSG_CLOCK_SW_STATE_UNREQ);
1223 if (curr_state)
1224 *curr_state = (c_state == MSG_CLOCK_HW_STATE_NOT_READY);
1225 return 0;
1226}
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239static int ti_sci_cmd_clk_set_parent(const struct ti_sci_handle *handle,
1240 u32 dev_id, u32 clk_id, u32 parent_id)
1241{
1242 struct ti_sci_info *info;
1243 struct ti_sci_msg_req_set_clock_parent *req;
1244 struct ti_sci_msg_hdr *resp;
1245 struct ti_sci_xfer *xfer;
1246 struct device *dev;
1247 int ret = 0;
1248
1249 if (IS_ERR(handle))
1250 return PTR_ERR(handle);
1251 if (!handle)
1252 return -EINVAL;
1253
1254 info = handle_to_ti_sci_info(handle);
1255 dev = info->dev;
1256
1257 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_PARENT,
1258 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1259 sizeof(*req), sizeof(*resp));
1260 if (IS_ERR(xfer)) {
1261 ret = PTR_ERR(xfer);
1262 dev_err(dev, "Message alloc failed(%d)\n", ret);
1263 return ret;
1264 }
1265 req = (struct ti_sci_msg_req_set_clock_parent *)xfer->xfer_buf;
1266 req->dev_id = dev_id;
1267 if (clk_id < 255) {
1268 req->clk_id = clk_id;
1269 } else {
1270 req->clk_id = 255;
1271 req->clk_id_32 = clk_id;
1272 }
1273 if (parent_id < 255) {
1274 req->parent_id = parent_id;
1275 } else {
1276 req->parent_id = 255;
1277 req->parent_id_32 = parent_id;
1278 }
1279
1280 ret = ti_sci_do_xfer(info, xfer);
1281 if (ret) {
1282 dev_err(dev, "Mbox send fail %d\n", ret);
1283 goto fail;
1284 }
1285
1286 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
1287
1288 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
1289
1290fail:
1291 ti_sci_put_one_xfer(&info->minfo, xfer);
1292
1293 return ret;
1294}
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307static int ti_sci_cmd_clk_get_parent(const struct ti_sci_handle *handle,
1308 u32 dev_id, u32 clk_id, u32 *parent_id)
1309{
1310 struct ti_sci_info *info;
1311 struct ti_sci_msg_req_get_clock_parent *req;
1312 struct ti_sci_msg_resp_get_clock_parent *resp;
1313 struct ti_sci_xfer *xfer;
1314 struct device *dev;
1315 int ret = 0;
1316
1317 if (IS_ERR(handle))
1318 return PTR_ERR(handle);
1319 if (!handle || !parent_id)
1320 return -EINVAL;
1321
1322 info = handle_to_ti_sci_info(handle);
1323 dev = info->dev;
1324
1325 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_PARENT,
1326 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1327 sizeof(*req), sizeof(*resp));
1328 if (IS_ERR(xfer)) {
1329 ret = PTR_ERR(xfer);
1330 dev_err(dev, "Message alloc failed(%d)\n", ret);
1331 return ret;
1332 }
1333 req = (struct ti_sci_msg_req_get_clock_parent *)xfer->xfer_buf;
1334 req->dev_id = dev_id;
1335 if (clk_id < 255) {
1336 req->clk_id = clk_id;
1337 } else {
1338 req->clk_id = 255;
1339 req->clk_id_32 = clk_id;
1340 }
1341
1342 ret = ti_sci_do_xfer(info, xfer);
1343 if (ret) {
1344 dev_err(dev, "Mbox send fail %d\n", ret);
1345 goto fail;
1346 }
1347
1348 resp = (struct ti_sci_msg_resp_get_clock_parent *)xfer->xfer_buf;
1349
1350 if (!ti_sci_is_response_ack(resp)) {
1351 ret = -ENODEV;
1352 } else {
1353 if (resp->parent_id < 255)
1354 *parent_id = resp->parent_id;
1355 else
1356 *parent_id = resp->parent_id_32;
1357 }
1358
1359fail:
1360 ti_sci_put_one_xfer(&info->minfo, xfer);
1361
1362 return ret;
1363}
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376static int ti_sci_cmd_clk_get_num_parents(const struct ti_sci_handle *handle,
1377 u32 dev_id, u32 clk_id,
1378 u32 *num_parents)
1379{
1380 struct ti_sci_info *info;
1381 struct ti_sci_msg_req_get_clock_num_parents *req;
1382 struct ti_sci_msg_resp_get_clock_num_parents *resp;
1383 struct ti_sci_xfer *xfer;
1384 struct device *dev;
1385 int ret = 0;
1386
1387 if (IS_ERR(handle))
1388 return PTR_ERR(handle);
1389 if (!handle || !num_parents)
1390 return -EINVAL;
1391
1392 info = handle_to_ti_sci_info(handle);
1393 dev = info->dev;
1394
1395 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_NUM_CLOCK_PARENTS,
1396 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1397 sizeof(*req), sizeof(*resp));
1398 if (IS_ERR(xfer)) {
1399 ret = PTR_ERR(xfer);
1400 dev_err(dev, "Message alloc failed(%d)\n", ret);
1401 return ret;
1402 }
1403 req = (struct ti_sci_msg_req_get_clock_num_parents *)xfer->xfer_buf;
1404 req->dev_id = dev_id;
1405 if (clk_id < 255) {
1406 req->clk_id = clk_id;
1407 } else {
1408 req->clk_id = 255;
1409 req->clk_id_32 = clk_id;
1410 }
1411
1412 ret = ti_sci_do_xfer(info, xfer);
1413 if (ret) {
1414 dev_err(dev, "Mbox send fail %d\n", ret);
1415 goto fail;
1416 }
1417
1418 resp = (struct ti_sci_msg_resp_get_clock_num_parents *)xfer->xfer_buf;
1419
1420 if (!ti_sci_is_response_ack(resp)) {
1421 ret = -ENODEV;
1422 } else {
1423 if (resp->num_parents < 255)
1424 *num_parents = resp->num_parents;
1425 else
1426 *num_parents = resp->num_parents_32;
1427 }
1428
1429fail:
1430 ti_sci_put_one_xfer(&info->minfo, xfer);
1431
1432 return ret;
1433}
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454static int ti_sci_cmd_clk_get_match_freq(const struct ti_sci_handle *handle,
1455 u32 dev_id, u32 clk_id, u64 min_freq,
1456 u64 target_freq, u64 max_freq,
1457 u64 *match_freq)
1458{
1459 struct ti_sci_info *info;
1460 struct ti_sci_msg_req_query_clock_freq *req;
1461 struct ti_sci_msg_resp_query_clock_freq *resp;
1462 struct ti_sci_xfer *xfer;
1463 struct device *dev;
1464 int ret = 0;
1465
1466 if (IS_ERR(handle))
1467 return PTR_ERR(handle);
1468 if (!handle || !match_freq)
1469 return -EINVAL;
1470
1471 info = handle_to_ti_sci_info(handle);
1472 dev = info->dev;
1473
1474 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_QUERY_CLOCK_FREQ,
1475 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1476 sizeof(*req), sizeof(*resp));
1477 if (IS_ERR(xfer)) {
1478 ret = PTR_ERR(xfer);
1479 dev_err(dev, "Message alloc failed(%d)\n", ret);
1480 return ret;
1481 }
1482 req = (struct ti_sci_msg_req_query_clock_freq *)xfer->xfer_buf;
1483 req->dev_id = dev_id;
1484 if (clk_id < 255) {
1485 req->clk_id = clk_id;
1486 } else {
1487 req->clk_id = 255;
1488 req->clk_id_32 = clk_id;
1489 }
1490 req->min_freq_hz = min_freq;
1491 req->target_freq_hz = target_freq;
1492 req->max_freq_hz = max_freq;
1493
1494 ret = ti_sci_do_xfer(info, xfer);
1495 if (ret) {
1496 dev_err(dev, "Mbox send fail %d\n", ret);
1497 goto fail;
1498 }
1499
1500 resp = (struct ti_sci_msg_resp_query_clock_freq *)xfer->xfer_buf;
1501
1502 if (!ti_sci_is_response_ack(resp))
1503 ret = -ENODEV;
1504 else
1505 *match_freq = resp->freq_hz;
1506
1507fail:
1508 ti_sci_put_one_xfer(&info->minfo, xfer);
1509
1510 return ret;
1511}
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531static int ti_sci_cmd_clk_set_freq(const struct ti_sci_handle *handle,
1532 u32 dev_id, u32 clk_id, u64 min_freq,
1533 u64 target_freq, u64 max_freq)
1534{
1535 struct ti_sci_info *info;
1536 struct ti_sci_msg_req_set_clock_freq *req;
1537 struct ti_sci_msg_hdr *resp;
1538 struct ti_sci_xfer *xfer;
1539 struct device *dev;
1540 int ret = 0;
1541
1542 if (IS_ERR(handle))
1543 return PTR_ERR(handle);
1544 if (!handle)
1545 return -EINVAL;
1546
1547 info = handle_to_ti_sci_info(handle);
1548 dev = info->dev;
1549
1550 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_FREQ,
1551 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1552 sizeof(*req), sizeof(*resp));
1553 if (IS_ERR(xfer)) {
1554 ret = PTR_ERR(xfer);
1555 dev_err(dev, "Message alloc failed(%d)\n", ret);
1556 return ret;
1557 }
1558 req = (struct ti_sci_msg_req_set_clock_freq *)xfer->xfer_buf;
1559 req->dev_id = dev_id;
1560 if (clk_id < 255) {
1561 req->clk_id = clk_id;
1562 } else {
1563 req->clk_id = 255;
1564 req->clk_id_32 = clk_id;
1565 }
1566 req->min_freq_hz = min_freq;
1567 req->target_freq_hz = target_freq;
1568 req->max_freq_hz = max_freq;
1569
1570 ret = ti_sci_do_xfer(info, xfer);
1571 if (ret) {
1572 dev_err(dev, "Mbox send fail %d\n", ret);
1573 goto fail;
1574 }
1575
1576 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
1577
1578 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
1579
1580fail:
1581 ti_sci_put_one_xfer(&info->minfo, xfer);
1582
1583 return ret;
1584}
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597static int ti_sci_cmd_clk_get_freq(const struct ti_sci_handle *handle,
1598 u32 dev_id, u32 clk_id, u64 *freq)
1599{
1600 struct ti_sci_info *info;
1601 struct ti_sci_msg_req_get_clock_freq *req;
1602 struct ti_sci_msg_resp_get_clock_freq *resp;
1603 struct ti_sci_xfer *xfer;
1604 struct device *dev;
1605 int ret = 0;
1606
1607 if (IS_ERR(handle))
1608 return PTR_ERR(handle);
1609 if (!handle || !freq)
1610 return -EINVAL;
1611
1612 info = handle_to_ti_sci_info(handle);
1613 dev = info->dev;
1614
1615 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_FREQ,
1616 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1617 sizeof(*req), sizeof(*resp));
1618 if (IS_ERR(xfer)) {
1619 ret = PTR_ERR(xfer);
1620 dev_err(dev, "Message alloc failed(%d)\n", ret);
1621 return ret;
1622 }
1623 req = (struct ti_sci_msg_req_get_clock_freq *)xfer->xfer_buf;
1624 req->dev_id = dev_id;
1625 if (clk_id < 255) {
1626 req->clk_id = clk_id;
1627 } else {
1628 req->clk_id = 255;
1629 req->clk_id_32 = clk_id;
1630 }
1631
1632 ret = ti_sci_do_xfer(info, xfer);
1633 if (ret) {
1634 dev_err(dev, "Mbox send fail %d\n", ret);
1635 goto fail;
1636 }
1637
1638 resp = (struct ti_sci_msg_resp_get_clock_freq *)xfer->xfer_buf;
1639
1640 if (!ti_sci_is_response_ack(resp))
1641 ret = -ENODEV;
1642 else
1643 *freq = resp->freq_hz;
1644
1645fail:
1646 ti_sci_put_one_xfer(&info->minfo, xfer);
1647
1648 return ret;
1649}
1650
1651static int ti_sci_cmd_core_reboot(const struct ti_sci_handle *handle)
1652{
1653 struct ti_sci_info *info;
1654 struct ti_sci_msg_req_reboot *req;
1655 struct ti_sci_msg_hdr *resp;
1656 struct ti_sci_xfer *xfer;
1657 struct device *dev;
1658 int ret = 0;
1659
1660 if (IS_ERR(handle))
1661 return PTR_ERR(handle);
1662 if (!handle)
1663 return -EINVAL;
1664
1665 info = handle_to_ti_sci_info(handle);
1666 dev = info->dev;
1667
1668 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SYS_RESET,
1669 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1670 sizeof(*req), sizeof(*resp));
1671 if (IS_ERR(xfer)) {
1672 ret = PTR_ERR(xfer);
1673 dev_err(dev, "Message alloc failed(%d)\n", ret);
1674 return ret;
1675 }
1676 req = (struct ti_sci_msg_req_reboot *)xfer->xfer_buf;
1677
1678 ret = ti_sci_do_xfer(info, xfer);
1679 if (ret) {
1680 dev_err(dev, "Mbox send fail %d\n", ret);
1681 goto fail;
1682 }
1683
1684 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
1685
1686 if (!ti_sci_is_response_ack(resp))
1687 ret = -ENODEV;
1688 else
1689 ret = 0;
1690
1691fail:
1692 ti_sci_put_one_xfer(&info->minfo, xfer);
1693
1694 return ret;
1695}
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
1712 u32 dev_id, u8 subtype, u8 s_host,
1713 struct ti_sci_resource_desc *desc)
1714{
1715 struct ti_sci_msg_resp_get_resource_range *resp;
1716 struct ti_sci_msg_req_get_resource_range *req;
1717 struct ti_sci_xfer *xfer;
1718 struct ti_sci_info *info;
1719 struct device *dev;
1720 int ret = 0;
1721
1722 if (IS_ERR(handle))
1723 return PTR_ERR(handle);
1724 if (!handle || !desc)
1725 return -EINVAL;
1726
1727 info = handle_to_ti_sci_info(handle);
1728 dev = info->dev;
1729
1730 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_RESOURCE_RANGE,
1731 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1732 sizeof(*req), sizeof(*resp));
1733 if (IS_ERR(xfer)) {
1734 ret = PTR_ERR(xfer);
1735 dev_err(dev, "Message alloc failed(%d)\n", ret);
1736 return ret;
1737 }
1738
1739 req = (struct ti_sci_msg_req_get_resource_range *)xfer->xfer_buf;
1740 req->secondary_host = s_host;
1741 req->type = dev_id & MSG_RM_RESOURCE_TYPE_MASK;
1742 req->subtype = subtype & MSG_RM_RESOURCE_SUBTYPE_MASK;
1743
1744 ret = ti_sci_do_xfer(info, xfer);
1745 if (ret) {
1746 dev_err(dev, "Mbox send fail %d\n", ret);
1747 goto fail;
1748 }
1749
1750 resp = (struct ti_sci_msg_resp_get_resource_range *)xfer->xfer_buf;
1751
1752 if (!ti_sci_is_response_ack(resp)) {
1753 ret = -ENODEV;
1754 } else if (!resp->range_num && !resp->range_num_sec) {
1755
1756 ret = -ENODEV;
1757 } else {
1758 desc->start = resp->range_start;
1759 desc->num = resp->range_num;
1760 desc->start_sec = resp->range_start_sec;
1761 desc->num_sec = resp->range_num_sec;
1762 };
1763
1764fail:
1765 ti_sci_put_one_xfer(&info->minfo, xfer);
1766
1767 return ret;
1768}
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782static int ti_sci_cmd_get_resource_range(const struct ti_sci_handle *handle,
1783 u32 dev_id, u8 subtype,
1784 struct ti_sci_resource_desc *desc)
1785{
1786 return ti_sci_get_resource_range(handle, dev_id, subtype,
1787 TI_SCI_IRQ_SECONDARY_HOST_INVALID,
1788 desc);
1789}
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804static
1805int ti_sci_cmd_get_resource_range_from_shost(const struct ti_sci_handle *handle,
1806 u32 dev_id, u8 subtype, u8 s_host,
1807 struct ti_sci_resource_desc *desc)
1808{
1809 return ti_sci_get_resource_range(handle, dev_id, subtype, s_host, desc);
1810}
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831static int ti_sci_manage_irq(const struct ti_sci_handle *handle,
1832 u32 valid_params, u16 src_id, u16 src_index,
1833 u16 dst_id, u16 dst_host_irq, u16 ia_id, u16 vint,
1834 u16 global_event, u8 vint_status_bit, u8 s_host,
1835 u16 type)
1836{
1837 struct ti_sci_msg_req_manage_irq *req;
1838 struct ti_sci_msg_hdr *resp;
1839 struct ti_sci_xfer *xfer;
1840 struct ti_sci_info *info;
1841 struct device *dev;
1842 int ret = 0;
1843
1844 if (IS_ERR(handle))
1845 return PTR_ERR(handle);
1846 if (!handle)
1847 return -EINVAL;
1848
1849 info = handle_to_ti_sci_info(handle);
1850 dev = info->dev;
1851
1852 xfer = ti_sci_get_one_xfer(info, type, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
1853 sizeof(*req), sizeof(*resp));
1854 if (IS_ERR(xfer)) {
1855 ret = PTR_ERR(xfer);
1856 dev_err(dev, "Message alloc failed(%d)\n", ret);
1857 return ret;
1858 }
1859 req = (struct ti_sci_msg_req_manage_irq *)xfer->xfer_buf;
1860 req->valid_params = valid_params;
1861 req->src_id = src_id;
1862 req->src_index = src_index;
1863 req->dst_id = dst_id;
1864 req->dst_host_irq = dst_host_irq;
1865 req->ia_id = ia_id;
1866 req->vint = vint;
1867 req->global_event = global_event;
1868 req->vint_status_bit = vint_status_bit;
1869 req->secondary_host = s_host;
1870
1871 ret = ti_sci_do_xfer(info, xfer);
1872 if (ret) {
1873 dev_err(dev, "Mbox send fail %d\n", ret);
1874 goto fail;
1875 }
1876
1877 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
1878
1879 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
1880
1881fail:
1882 ti_sci_put_one_xfer(&info->minfo, xfer);
1883
1884 return ret;
1885}
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905static int ti_sci_set_irq(const struct ti_sci_handle *handle, u32 valid_params,
1906 u16 src_id, u16 src_index, u16 dst_id,
1907 u16 dst_host_irq, u16 ia_id, u16 vint,
1908 u16 global_event, u8 vint_status_bit, u8 s_host)
1909{
1910 pr_debug("%s: IRQ set with valid_params = 0x%x from src = %d, index = %d, to dst = %d, irq = %d,via ia_id = %d, vint = %d, global event = %d,status_bit = %d\n",
1911 __func__, valid_params, src_id, src_index,
1912 dst_id, dst_host_irq, ia_id, vint, global_event,
1913 vint_status_bit);
1914
1915 return ti_sci_manage_irq(handle, valid_params, src_id, src_index,
1916 dst_id, dst_host_irq, ia_id, vint,
1917 global_event, vint_status_bit, s_host,
1918 TI_SCI_MSG_SET_IRQ);
1919}
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939static int ti_sci_free_irq(const struct ti_sci_handle *handle, u32 valid_params,
1940 u16 src_id, u16 src_index, u16 dst_id,
1941 u16 dst_host_irq, u16 ia_id, u16 vint,
1942 u16 global_event, u8 vint_status_bit, u8 s_host)
1943{
1944 pr_debug("%s: IRQ release with valid_params = 0x%x from src = %d, index = %d, to dst = %d, irq = %d,via ia_id = %d, vint = %d, global event = %d,status_bit = %d\n",
1945 __func__, valid_params, src_id, src_index,
1946 dst_id, dst_host_irq, ia_id, vint, global_event,
1947 vint_status_bit);
1948
1949 return ti_sci_manage_irq(handle, valid_params, src_id, src_index,
1950 dst_id, dst_host_irq, ia_id, vint,
1951 global_event, vint_status_bit, s_host,
1952 TI_SCI_MSG_FREE_IRQ);
1953}
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968static int ti_sci_cmd_set_irq(const struct ti_sci_handle *handle, u16 src_id,
1969 u16 src_index, u16 dst_id, u16 dst_host_irq)
1970{
1971 u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID;
1972
1973 return ti_sci_set_irq(handle, valid_params, src_id, src_index, dst_id,
1974 dst_host_irq, 0, 0, 0, 0, 0);
1975}
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990static int ti_sci_cmd_set_event_map(const struct ti_sci_handle *handle,
1991 u16 src_id, u16 src_index, u16 ia_id,
1992 u16 vint, u16 global_event,
1993 u8 vint_status_bit)
1994{
1995 u32 valid_params = MSG_FLAG_IA_ID_VALID | MSG_FLAG_VINT_VALID |
1996 MSG_FLAG_GLB_EVNT_VALID |
1997 MSG_FLAG_VINT_STS_BIT_VALID;
1998
1999 return ti_sci_set_irq(handle, valid_params, src_id, src_index, 0, 0,
2000 ia_id, vint, global_event, vint_status_bit, 0);
2001}
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016static int ti_sci_cmd_free_irq(const struct ti_sci_handle *handle, u16 src_id,
2017 u16 src_index, u16 dst_id, u16 dst_host_irq)
2018{
2019 u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID;
2020
2021 return ti_sci_free_irq(handle, valid_params, src_id, src_index, dst_id,
2022 dst_host_irq, 0, 0, 0, 0, 0);
2023}
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038static int ti_sci_cmd_free_event_map(const struct ti_sci_handle *handle,
2039 u16 src_id, u16 src_index, u16 ia_id,
2040 u16 vint, u16 global_event,
2041 u8 vint_status_bit)
2042{
2043 u32 valid_params = MSG_FLAG_IA_ID_VALID |
2044 MSG_FLAG_VINT_VALID | MSG_FLAG_GLB_EVNT_VALID |
2045 MSG_FLAG_VINT_STS_BIT_VALID;
2046
2047 return ti_sci_free_irq(handle, valid_params, src_id, src_index, 0, 0,
2048 ia_id, vint, global_event, vint_status_bit, 0);
2049}
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061static int ti_sci_cmd_rm_ring_cfg(const struct ti_sci_handle *handle,
2062 const struct ti_sci_msg_rm_ring_cfg *params)
2063{
2064 struct ti_sci_msg_rm_ring_cfg_req *req;
2065 struct ti_sci_msg_hdr *resp;
2066 struct ti_sci_xfer *xfer;
2067 struct ti_sci_info *info;
2068 struct device *dev;
2069 int ret = 0;
2070
2071 if (IS_ERR_OR_NULL(handle))
2072 return -EINVAL;
2073
2074 info = handle_to_ti_sci_info(handle);
2075 dev = info->dev;
2076
2077 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_RING_CFG,
2078 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2079 sizeof(*req), sizeof(*resp));
2080 if (IS_ERR(xfer)) {
2081 ret = PTR_ERR(xfer);
2082 dev_err(dev, "RM_RA:Message config failed(%d)\n", ret);
2083 return ret;
2084 }
2085 req = (struct ti_sci_msg_rm_ring_cfg_req *)xfer->xfer_buf;
2086 req->valid_params = params->valid_params;
2087 req->nav_id = params->nav_id;
2088 req->index = params->index;
2089 req->addr_lo = params->addr_lo;
2090 req->addr_hi = params->addr_hi;
2091 req->count = params->count;
2092 req->mode = params->mode;
2093 req->size = params->size;
2094 req->order_id = params->order_id;
2095 req->virtid = params->virtid;
2096 req->asel = params->asel;
2097
2098 ret = ti_sci_do_xfer(info, xfer);
2099 if (ret) {
2100 dev_err(dev, "RM_RA:Mbox config send fail %d\n", ret);
2101 goto fail;
2102 }
2103
2104 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2105 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2106
2107fail:
2108 ti_sci_put_one_xfer(&info->minfo, xfer);
2109 dev_dbg(dev, "RM_RA:config ring %u ret:%d\n", params->index, ret);
2110 return ret;
2111}
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123static int ti_sci_cmd_rm_psil_pair(const struct ti_sci_handle *handle,
2124 u32 nav_id, u32 src_thread, u32 dst_thread)
2125{
2126 struct ti_sci_msg_psil_pair *req;
2127 struct ti_sci_msg_hdr *resp;
2128 struct ti_sci_xfer *xfer;
2129 struct ti_sci_info *info;
2130 struct device *dev;
2131 int ret = 0;
2132
2133 if (IS_ERR(handle))
2134 return PTR_ERR(handle);
2135 if (!handle)
2136 return -EINVAL;
2137
2138 info = handle_to_ti_sci_info(handle);
2139 dev = info->dev;
2140
2141 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_PSIL_PAIR,
2142 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2143 sizeof(*req), sizeof(*resp));
2144 if (IS_ERR(xfer)) {
2145 ret = PTR_ERR(xfer);
2146 dev_err(dev, "RM_PSIL:Message reconfig failed(%d)\n", ret);
2147 return ret;
2148 }
2149 req = (struct ti_sci_msg_psil_pair *)xfer->xfer_buf;
2150 req->nav_id = nav_id;
2151 req->src_thread = src_thread;
2152 req->dst_thread = dst_thread;
2153
2154 ret = ti_sci_do_xfer(info, xfer);
2155 if (ret) {
2156 dev_err(dev, "RM_PSIL:Mbox send fail %d\n", ret);
2157 goto fail;
2158 }
2159
2160 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2161 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2162
2163fail:
2164 ti_sci_put_one_xfer(&info->minfo, xfer);
2165
2166 return ret;
2167}
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179static int ti_sci_cmd_rm_psil_unpair(const struct ti_sci_handle *handle,
2180 u32 nav_id, u32 src_thread, u32 dst_thread)
2181{
2182 struct ti_sci_msg_psil_unpair *req;
2183 struct ti_sci_msg_hdr *resp;
2184 struct ti_sci_xfer *xfer;
2185 struct ti_sci_info *info;
2186 struct device *dev;
2187 int ret = 0;
2188
2189 if (IS_ERR(handle))
2190 return PTR_ERR(handle);
2191 if (!handle)
2192 return -EINVAL;
2193
2194 info = handle_to_ti_sci_info(handle);
2195 dev = info->dev;
2196
2197 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_PSIL_UNPAIR,
2198 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2199 sizeof(*req), sizeof(*resp));
2200 if (IS_ERR(xfer)) {
2201 ret = PTR_ERR(xfer);
2202 dev_err(dev, "RM_PSIL:Message reconfig failed(%d)\n", ret);
2203 return ret;
2204 }
2205 req = (struct ti_sci_msg_psil_unpair *)xfer->xfer_buf;
2206 req->nav_id = nav_id;
2207 req->src_thread = src_thread;
2208 req->dst_thread = dst_thread;
2209
2210 ret = ti_sci_do_xfer(info, xfer);
2211 if (ret) {
2212 dev_err(dev, "RM_PSIL:Mbox send fail %d\n", ret);
2213 goto fail;
2214 }
2215
2216 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2217 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2218
2219fail:
2220 ti_sci_put_one_xfer(&info->minfo, xfer);
2221
2222 return ret;
2223}
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236static int ti_sci_cmd_rm_udmap_tx_ch_cfg(const struct ti_sci_handle *handle,
2237 const struct ti_sci_msg_rm_udmap_tx_ch_cfg *params)
2238{
2239 struct ti_sci_msg_rm_udmap_tx_ch_cfg_req *req;
2240 struct ti_sci_msg_hdr *resp;
2241 struct ti_sci_xfer *xfer;
2242 struct ti_sci_info *info;
2243 struct device *dev;
2244 int ret = 0;
2245
2246 if (IS_ERR_OR_NULL(handle))
2247 return -EINVAL;
2248
2249 info = handle_to_ti_sci_info(handle);
2250 dev = info->dev;
2251
2252 xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_TX_CH_CFG,
2253 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2254 sizeof(*req), sizeof(*resp));
2255 if (IS_ERR(xfer)) {
2256 ret = PTR_ERR(xfer);
2257 dev_err(dev, "Message TX_CH_CFG alloc failed(%d)\n", ret);
2258 return ret;
2259 }
2260 req = (struct ti_sci_msg_rm_udmap_tx_ch_cfg_req *)xfer->xfer_buf;
2261 req->valid_params = params->valid_params;
2262 req->nav_id = params->nav_id;
2263 req->index = params->index;
2264 req->tx_pause_on_err = params->tx_pause_on_err;
2265 req->tx_filt_einfo = params->tx_filt_einfo;
2266 req->tx_filt_pswords = params->tx_filt_pswords;
2267 req->tx_atype = params->tx_atype;
2268 req->tx_chan_type = params->tx_chan_type;
2269 req->tx_supr_tdpkt = params->tx_supr_tdpkt;
2270 req->tx_fetch_size = params->tx_fetch_size;
2271 req->tx_credit_count = params->tx_credit_count;
2272 req->txcq_qnum = params->txcq_qnum;
2273 req->tx_priority = params->tx_priority;
2274 req->tx_qos = params->tx_qos;
2275 req->tx_orderid = params->tx_orderid;
2276 req->fdepth = params->fdepth;
2277 req->tx_sched_priority = params->tx_sched_priority;
2278 req->tx_burst_size = params->tx_burst_size;
2279 req->tx_tdtype = params->tx_tdtype;
2280 req->extended_ch_type = params->extended_ch_type;
2281
2282 ret = ti_sci_do_xfer(info, xfer);
2283 if (ret) {
2284 dev_err(dev, "Mbox send TX_CH_CFG fail %d\n", ret);
2285 goto fail;
2286 }
2287
2288 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2289 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2290
2291fail:
2292 ti_sci_put_one_xfer(&info->minfo, xfer);
2293 dev_dbg(dev, "TX_CH_CFG: chn %u ret:%u\n", params->index, ret);
2294 return ret;
2295}
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308static int ti_sci_cmd_rm_udmap_rx_ch_cfg(const struct ti_sci_handle *handle,
2309 const struct ti_sci_msg_rm_udmap_rx_ch_cfg *params)
2310{
2311 struct ti_sci_msg_rm_udmap_rx_ch_cfg_req *req;
2312 struct ti_sci_msg_hdr *resp;
2313 struct ti_sci_xfer *xfer;
2314 struct ti_sci_info *info;
2315 struct device *dev;
2316 int ret = 0;
2317
2318 if (IS_ERR_OR_NULL(handle))
2319 return -EINVAL;
2320
2321 info = handle_to_ti_sci_info(handle);
2322 dev = info->dev;
2323
2324 xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_RX_CH_CFG,
2325 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2326 sizeof(*req), sizeof(*resp));
2327 if (IS_ERR(xfer)) {
2328 ret = PTR_ERR(xfer);
2329 dev_err(dev, "Message RX_CH_CFG alloc failed(%d)\n", ret);
2330 return ret;
2331 }
2332 req = (struct ti_sci_msg_rm_udmap_rx_ch_cfg_req *)xfer->xfer_buf;
2333 req->valid_params = params->valid_params;
2334 req->nav_id = params->nav_id;
2335 req->index = params->index;
2336 req->rx_fetch_size = params->rx_fetch_size;
2337 req->rxcq_qnum = params->rxcq_qnum;
2338 req->rx_priority = params->rx_priority;
2339 req->rx_qos = params->rx_qos;
2340 req->rx_orderid = params->rx_orderid;
2341 req->rx_sched_priority = params->rx_sched_priority;
2342 req->flowid_start = params->flowid_start;
2343 req->flowid_cnt = params->flowid_cnt;
2344 req->rx_pause_on_err = params->rx_pause_on_err;
2345 req->rx_atype = params->rx_atype;
2346 req->rx_chan_type = params->rx_chan_type;
2347 req->rx_ignore_short = params->rx_ignore_short;
2348 req->rx_ignore_long = params->rx_ignore_long;
2349 req->rx_burst_size = params->rx_burst_size;
2350
2351 ret = ti_sci_do_xfer(info, xfer);
2352 if (ret) {
2353 dev_err(dev, "Mbox send RX_CH_CFG fail %d\n", ret);
2354 goto fail;
2355 }
2356
2357 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2358 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2359
2360fail:
2361 ti_sci_put_one_xfer(&info->minfo, xfer);
2362 dev_dbg(dev, "RX_CH_CFG: chn %u ret:%d\n", params->index, ret);
2363 return ret;
2364}
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377static int ti_sci_cmd_rm_udmap_rx_flow_cfg(const struct ti_sci_handle *handle,
2378 const struct ti_sci_msg_rm_udmap_flow_cfg *params)
2379{
2380 struct ti_sci_msg_rm_udmap_flow_cfg_req *req;
2381 struct ti_sci_msg_hdr *resp;
2382 struct ti_sci_xfer *xfer;
2383 struct ti_sci_info *info;
2384 struct device *dev;
2385 int ret = 0;
2386
2387 if (IS_ERR_OR_NULL(handle))
2388 return -EINVAL;
2389
2390 info = handle_to_ti_sci_info(handle);
2391 dev = info->dev;
2392
2393 xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_FLOW_CFG,
2394 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2395 sizeof(*req), sizeof(*resp));
2396 if (IS_ERR(xfer)) {
2397 ret = PTR_ERR(xfer);
2398 dev_err(dev, "RX_FL_CFG: Message alloc failed(%d)\n", ret);
2399 return ret;
2400 }
2401 req = (struct ti_sci_msg_rm_udmap_flow_cfg_req *)xfer->xfer_buf;
2402 req->valid_params = params->valid_params;
2403 req->nav_id = params->nav_id;
2404 req->flow_index = params->flow_index;
2405 req->rx_einfo_present = params->rx_einfo_present;
2406 req->rx_psinfo_present = params->rx_psinfo_present;
2407 req->rx_error_handling = params->rx_error_handling;
2408 req->rx_desc_type = params->rx_desc_type;
2409 req->rx_sop_offset = params->rx_sop_offset;
2410 req->rx_dest_qnum = params->rx_dest_qnum;
2411 req->rx_src_tag_hi = params->rx_src_tag_hi;
2412 req->rx_src_tag_lo = params->rx_src_tag_lo;
2413 req->rx_dest_tag_hi = params->rx_dest_tag_hi;
2414 req->rx_dest_tag_lo = params->rx_dest_tag_lo;
2415 req->rx_src_tag_hi_sel = params->rx_src_tag_hi_sel;
2416 req->rx_src_tag_lo_sel = params->rx_src_tag_lo_sel;
2417 req->rx_dest_tag_hi_sel = params->rx_dest_tag_hi_sel;
2418 req->rx_dest_tag_lo_sel = params->rx_dest_tag_lo_sel;
2419 req->rx_fdq0_sz0_qnum = params->rx_fdq0_sz0_qnum;
2420 req->rx_fdq1_qnum = params->rx_fdq1_qnum;
2421 req->rx_fdq2_qnum = params->rx_fdq2_qnum;
2422 req->rx_fdq3_qnum = params->rx_fdq3_qnum;
2423 req->rx_ps_location = params->rx_ps_location;
2424
2425 ret = ti_sci_do_xfer(info, xfer);
2426 if (ret) {
2427 dev_err(dev, "RX_FL_CFG: Mbox send fail %d\n", ret);
2428 goto fail;
2429 }
2430
2431 resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
2432 ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
2433
2434fail:
2435 ti_sci_put_one_xfer(&info->minfo, xfer);
2436 dev_dbg(info->dev, "RX_FL_CFG: %u ret:%d\n", params->flow_index, ret);
2437 return ret;
2438}
2439
2440
2441
2442
2443
2444
2445
2446
2447static int ti_sci_cmd_proc_request(const struct ti_sci_handle *handle,
2448 u8 proc_id)
2449{
2450 struct ti_sci_msg_req_proc_request *req;
2451 struct ti_sci_msg_hdr *resp;
2452 struct ti_sci_info *info;
2453 struct ti_sci_xfer *xfer;
2454 struct device *dev;
2455 int ret = 0;
2456
2457 if (!handle)
2458 return -EINVAL;
2459 if (IS_ERR(handle))
2460 return PTR_ERR(handle);
2461
2462 info = handle_to_ti_sci_info(handle);
2463 dev = info->dev;
2464
2465 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_REQUEST,
2466 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2467 sizeof(*req), sizeof(*resp));
2468 if (IS_ERR(xfer)) {
2469 ret = PTR_ERR(xfer);
2470 dev_err(dev, "Message alloc failed(%d)\n", ret);
2471 return ret;
2472 }
2473 req = (struct ti_sci_msg_req_proc_request *)xfer->xfer_buf;
2474 req->processor_id = proc_id;
2475
2476 ret = ti_sci_do_xfer(info, xfer);
2477 if (ret) {
2478 dev_err(dev, "Mbox send fail %d\n", ret);
2479 goto fail;
2480 }
2481
2482 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
2483
2484 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2485
2486fail:
2487 ti_sci_put_one_xfer(&info->minfo, xfer);
2488
2489 return ret;
2490}
2491
2492
2493
2494
2495
2496
2497
2498
2499static int ti_sci_cmd_proc_release(const struct ti_sci_handle *handle,
2500 u8 proc_id)
2501{
2502 struct ti_sci_msg_req_proc_release *req;
2503 struct ti_sci_msg_hdr *resp;
2504 struct ti_sci_info *info;
2505 struct ti_sci_xfer *xfer;
2506 struct device *dev;
2507 int ret = 0;
2508
2509 if (!handle)
2510 return -EINVAL;
2511 if (IS_ERR(handle))
2512 return PTR_ERR(handle);
2513
2514 info = handle_to_ti_sci_info(handle);
2515 dev = info->dev;
2516
2517 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_RELEASE,
2518 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2519 sizeof(*req), sizeof(*resp));
2520 if (IS_ERR(xfer)) {
2521 ret = PTR_ERR(xfer);
2522 dev_err(dev, "Message alloc failed(%d)\n", ret);
2523 return ret;
2524 }
2525 req = (struct ti_sci_msg_req_proc_release *)xfer->xfer_buf;
2526 req->processor_id = proc_id;
2527
2528 ret = ti_sci_do_xfer(info, xfer);
2529 if (ret) {
2530 dev_err(dev, "Mbox send fail %d\n", ret);
2531 goto fail;
2532 }
2533
2534 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
2535
2536 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2537
2538fail:
2539 ti_sci_put_one_xfer(&info->minfo, xfer);
2540
2541 return ret;
2542}
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554static int ti_sci_cmd_proc_handover(const struct ti_sci_handle *handle,
2555 u8 proc_id, u8 host_id)
2556{
2557 struct ti_sci_msg_req_proc_handover *req;
2558 struct ti_sci_msg_hdr *resp;
2559 struct ti_sci_info *info;
2560 struct ti_sci_xfer *xfer;
2561 struct device *dev;
2562 int ret = 0;
2563
2564 if (!handle)
2565 return -EINVAL;
2566 if (IS_ERR(handle))
2567 return PTR_ERR(handle);
2568
2569 info = handle_to_ti_sci_info(handle);
2570 dev = info->dev;
2571
2572 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_HANDOVER,
2573 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2574 sizeof(*req), sizeof(*resp));
2575 if (IS_ERR(xfer)) {
2576 ret = PTR_ERR(xfer);
2577 dev_err(dev, "Message alloc failed(%d)\n", ret);
2578 return ret;
2579 }
2580 req = (struct ti_sci_msg_req_proc_handover *)xfer->xfer_buf;
2581 req->processor_id = proc_id;
2582 req->host_id = host_id;
2583
2584 ret = ti_sci_do_xfer(info, xfer);
2585 if (ret) {
2586 dev_err(dev, "Mbox send fail %d\n", ret);
2587 goto fail;
2588 }
2589
2590 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
2591
2592 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2593
2594fail:
2595 ti_sci_put_one_xfer(&info->minfo, xfer);
2596
2597 return ret;
2598}
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610static int ti_sci_cmd_proc_set_config(const struct ti_sci_handle *handle,
2611 u8 proc_id, u64 bootvector,
2612 u32 config_flags_set,
2613 u32 config_flags_clear)
2614{
2615 struct ti_sci_msg_req_set_config *req;
2616 struct ti_sci_msg_hdr *resp;
2617 struct ti_sci_info *info;
2618 struct ti_sci_xfer *xfer;
2619 struct device *dev;
2620 int ret = 0;
2621
2622 if (!handle)
2623 return -EINVAL;
2624 if (IS_ERR(handle))
2625 return PTR_ERR(handle);
2626
2627 info = handle_to_ti_sci_info(handle);
2628 dev = info->dev;
2629
2630 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CONFIG,
2631 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2632 sizeof(*req), sizeof(*resp));
2633 if (IS_ERR(xfer)) {
2634 ret = PTR_ERR(xfer);
2635 dev_err(dev, "Message alloc failed(%d)\n", ret);
2636 return ret;
2637 }
2638 req = (struct ti_sci_msg_req_set_config *)xfer->xfer_buf;
2639 req->processor_id = proc_id;
2640 req->bootvector_low = bootvector & TI_SCI_ADDR_LOW_MASK;
2641 req->bootvector_high = (bootvector & TI_SCI_ADDR_HIGH_MASK) >>
2642 TI_SCI_ADDR_HIGH_SHIFT;
2643 req->config_flags_set = config_flags_set;
2644 req->config_flags_clear = config_flags_clear;
2645
2646 ret = ti_sci_do_xfer(info, xfer);
2647 if (ret) {
2648 dev_err(dev, "Mbox send fail %d\n", ret);
2649 goto fail;
2650 }
2651
2652 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
2653
2654 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2655
2656fail:
2657 ti_sci_put_one_xfer(&info->minfo, xfer);
2658
2659 return ret;
2660}
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672static int ti_sci_cmd_proc_set_control(const struct ti_sci_handle *handle,
2673 u8 proc_id, u32 control_flags_set,
2674 u32 control_flags_clear)
2675{
2676 struct ti_sci_msg_req_set_ctrl *req;
2677 struct ti_sci_msg_hdr *resp;
2678 struct ti_sci_info *info;
2679 struct ti_sci_xfer *xfer;
2680 struct device *dev;
2681 int ret = 0;
2682
2683 if (!handle)
2684 return -EINVAL;
2685 if (IS_ERR(handle))
2686 return PTR_ERR(handle);
2687
2688 info = handle_to_ti_sci_info(handle);
2689 dev = info->dev;
2690
2691 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CTRL,
2692 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2693 sizeof(*req), sizeof(*resp));
2694 if (IS_ERR(xfer)) {
2695 ret = PTR_ERR(xfer);
2696 dev_err(dev, "Message alloc failed(%d)\n", ret);
2697 return ret;
2698 }
2699 req = (struct ti_sci_msg_req_set_ctrl *)xfer->xfer_buf;
2700 req->processor_id = proc_id;
2701 req->control_flags_set = control_flags_set;
2702 req->control_flags_clear = control_flags_clear;
2703
2704 ret = ti_sci_do_xfer(info, xfer);
2705 if (ret) {
2706 dev_err(dev, "Mbox send fail %d\n", ret);
2707 goto fail;
2708 }
2709
2710 resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
2711
2712 ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
2713
2714fail:
2715 ti_sci_put_one_xfer(&info->minfo, xfer);
2716
2717 return ret;
2718}
2719
2720
2721
2722
2723
2724
2725
2726
2727static int ti_sci_cmd_proc_get_status(const struct ti_sci_handle *handle,
2728 u8 proc_id, u64 *bv, u32 *cfg_flags,
2729 u32 *ctrl_flags, u32 *sts_flags)
2730{
2731 struct ti_sci_msg_resp_get_status *resp;
2732 struct ti_sci_msg_req_get_status *req;
2733 struct ti_sci_info *info;
2734 struct ti_sci_xfer *xfer;
2735 struct device *dev;
2736 int ret = 0;
2737
2738 if (!handle)
2739 return -EINVAL;
2740 if (IS_ERR(handle))
2741 return PTR_ERR(handle);
2742
2743 info = handle_to_ti_sci_info(handle);
2744 dev = info->dev;
2745
2746 xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_STATUS,
2747 TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
2748 sizeof(*req), sizeof(*resp));
2749 if (IS_ERR(xfer)) {
2750 ret = PTR_ERR(xfer);
2751 dev_err(dev, "Message alloc failed(%d)\n", ret);
2752 return ret;
2753 }
2754 req = (struct ti_sci_msg_req_get_status *)xfer->xfer_buf;
2755 req->processor_id = proc_id;
2756
2757 ret = ti_sci_do_xfer(info, xfer);
2758 if (ret) {
2759 dev_err(dev, "Mbox send fail %d\n", ret);
2760 goto fail;
2761 }
2762
2763 resp = (struct ti_sci_msg_resp_get_status *)xfer->tx_message.buf;
2764
2765 if (!ti_sci_is_response_ack(resp)) {
2766 ret = -ENODEV;
2767 } else {
2768 *bv = (resp->bootvector_low & TI_SCI_ADDR_LOW_MASK) |
2769 (((u64)resp->bootvector_high << TI_SCI_ADDR_HIGH_SHIFT) &
2770 TI_SCI_ADDR_HIGH_MASK);
2771 *cfg_flags = resp->config_flags;
2772 *ctrl_flags = resp->control_flags;
2773 *sts_flags = resp->status_flags;
2774 }
2775
2776fail:
2777 ti_sci_put_one_xfer(&info->minfo, xfer);
2778
2779 return ret;
2780}
2781
2782
2783
2784
2785
2786static void ti_sci_setup_ops(struct ti_sci_info *info)
2787{
2788 struct ti_sci_ops *ops = &info->handle.ops;
2789 struct ti_sci_core_ops *core_ops = &ops->core_ops;
2790 struct ti_sci_dev_ops *dops = &ops->dev_ops;
2791 struct ti_sci_clk_ops *cops = &ops->clk_ops;
2792 struct ti_sci_rm_core_ops *rm_core_ops = &ops->rm_core_ops;
2793 struct ti_sci_rm_irq_ops *iops = &ops->rm_irq_ops;
2794 struct ti_sci_rm_ringacc_ops *rops = &ops->rm_ring_ops;
2795 struct ti_sci_rm_psil_ops *psilops = &ops->rm_psil_ops;
2796 struct ti_sci_rm_udmap_ops *udmap_ops = &ops->rm_udmap_ops;
2797 struct ti_sci_proc_ops *pops = &ops->proc_ops;
2798
2799 core_ops->reboot_device = ti_sci_cmd_core_reboot;
2800
2801 dops->get_device = ti_sci_cmd_get_device;
2802 dops->get_device_exclusive = ti_sci_cmd_get_device_exclusive;
2803 dops->idle_device = ti_sci_cmd_idle_device;
2804 dops->idle_device_exclusive = ti_sci_cmd_idle_device_exclusive;
2805 dops->put_device = ti_sci_cmd_put_device;
2806
2807 dops->is_valid = ti_sci_cmd_dev_is_valid;
2808 dops->get_context_loss_count = ti_sci_cmd_dev_get_clcnt;
2809 dops->is_idle = ti_sci_cmd_dev_is_idle;
2810 dops->is_stop = ti_sci_cmd_dev_is_stop;
2811 dops->is_on = ti_sci_cmd_dev_is_on;
2812 dops->is_transitioning = ti_sci_cmd_dev_is_trans;
2813 dops->set_device_resets = ti_sci_cmd_set_device_resets;
2814 dops->get_device_resets = ti_sci_cmd_get_device_resets;
2815
2816 cops->get_clock = ti_sci_cmd_get_clock;
2817 cops->idle_clock = ti_sci_cmd_idle_clock;
2818 cops->put_clock = ti_sci_cmd_put_clock;
2819 cops->is_auto = ti_sci_cmd_clk_is_auto;
2820 cops->is_on = ti_sci_cmd_clk_is_on;
2821 cops->is_off = ti_sci_cmd_clk_is_off;
2822
2823 cops->set_parent = ti_sci_cmd_clk_set_parent;
2824 cops->get_parent = ti_sci_cmd_clk_get_parent;
2825 cops->get_num_parents = ti_sci_cmd_clk_get_num_parents;
2826
2827 cops->get_best_match_freq = ti_sci_cmd_clk_get_match_freq;
2828 cops->set_freq = ti_sci_cmd_clk_set_freq;
2829 cops->get_freq = ti_sci_cmd_clk_get_freq;
2830
2831 rm_core_ops->get_range = ti_sci_cmd_get_resource_range;
2832 rm_core_ops->get_range_from_shost =
2833 ti_sci_cmd_get_resource_range_from_shost;
2834
2835 iops->set_irq = ti_sci_cmd_set_irq;
2836 iops->set_event_map = ti_sci_cmd_set_event_map;
2837 iops->free_irq = ti_sci_cmd_free_irq;
2838 iops->free_event_map = ti_sci_cmd_free_event_map;
2839
2840 rops->set_cfg = ti_sci_cmd_rm_ring_cfg;
2841
2842 psilops->pair = ti_sci_cmd_rm_psil_pair;
2843 psilops->unpair = ti_sci_cmd_rm_psil_unpair;
2844
2845 udmap_ops->tx_ch_cfg = ti_sci_cmd_rm_udmap_tx_ch_cfg;
2846 udmap_ops->rx_ch_cfg = ti_sci_cmd_rm_udmap_rx_ch_cfg;
2847 udmap_ops->rx_flow_cfg = ti_sci_cmd_rm_udmap_rx_flow_cfg;
2848
2849 pops->request = ti_sci_cmd_proc_request;
2850 pops->release = ti_sci_cmd_proc_release;
2851 pops->handover = ti_sci_cmd_proc_handover;
2852 pops->set_config = ti_sci_cmd_proc_set_config;
2853 pops->set_control = ti_sci_cmd_proc_set_control;
2854 pops->get_status = ti_sci_cmd_proc_get_status;
2855}
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869const struct ti_sci_handle *ti_sci_get_handle(struct device *dev)
2870{
2871 struct device_node *ti_sci_np;
2872 struct list_head *p;
2873 struct ti_sci_handle *handle = NULL;
2874 struct ti_sci_info *info;
2875
2876 if (!dev) {
2877 pr_err("I need a device pointer\n");
2878 return ERR_PTR(-EINVAL);
2879 }
2880 ti_sci_np = of_get_parent(dev->of_node);
2881 if (!ti_sci_np) {
2882 dev_err(dev, "No OF information\n");
2883 return ERR_PTR(-EINVAL);
2884 }
2885
2886 mutex_lock(&ti_sci_list_mutex);
2887 list_for_each(p, &ti_sci_list) {
2888 info = list_entry(p, struct ti_sci_info, node);
2889 if (ti_sci_np == info->dev->of_node) {
2890 handle = &info->handle;
2891 info->users++;
2892 break;
2893 }
2894 }
2895 mutex_unlock(&ti_sci_list_mutex);
2896 of_node_put(ti_sci_np);
2897
2898 if (!handle)
2899 return ERR_PTR(-EPROBE_DEFER);
2900
2901 return handle;
2902}
2903EXPORT_SYMBOL_GPL(ti_sci_get_handle);
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917int ti_sci_put_handle(const struct ti_sci_handle *handle)
2918{
2919 struct ti_sci_info *info;
2920
2921 if (IS_ERR(handle))
2922 return PTR_ERR(handle);
2923 if (!handle)
2924 return -EINVAL;
2925
2926 info = handle_to_ti_sci_info(handle);
2927 mutex_lock(&ti_sci_list_mutex);
2928 if (!WARN_ON(!info->users))
2929 info->users--;
2930 mutex_unlock(&ti_sci_list_mutex);
2931
2932 return 0;
2933}
2934EXPORT_SYMBOL_GPL(ti_sci_put_handle);
2935
2936static void devm_ti_sci_release(struct device *dev, void *res)
2937{
2938 const struct ti_sci_handle **ptr = res;
2939 const struct ti_sci_handle *handle = *ptr;
2940 int ret;
2941
2942 ret = ti_sci_put_handle(handle);
2943 if (ret)
2944 dev_err(dev, "failed to put handle %d\n", ret);
2945}
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958const struct ti_sci_handle *devm_ti_sci_get_handle(struct device *dev)
2959{
2960 const struct ti_sci_handle **ptr;
2961 const struct ti_sci_handle *handle;
2962
2963 ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL);
2964 if (!ptr)
2965 return ERR_PTR(-ENOMEM);
2966 handle = ti_sci_get_handle(dev);
2967
2968 if (!IS_ERR(handle)) {
2969 *ptr = handle;
2970 devres_add(dev, ptr);
2971 } else {
2972 devres_free(ptr);
2973 }
2974
2975 return handle;
2976}
2977EXPORT_SYMBOL_GPL(devm_ti_sci_get_handle);
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992const struct ti_sci_handle *ti_sci_get_by_phandle(struct device_node *np,
2993 const char *property)
2994{
2995 struct ti_sci_handle *handle = NULL;
2996 struct device_node *ti_sci_np;
2997 struct ti_sci_info *info;
2998 struct list_head *p;
2999
3000 if (!np) {
3001 pr_err("I need a device pointer\n");
3002 return ERR_PTR(-EINVAL);
3003 }
3004
3005 ti_sci_np = of_parse_phandle(np, property, 0);
3006 if (!ti_sci_np)
3007 return ERR_PTR(-ENODEV);
3008
3009 mutex_lock(&ti_sci_list_mutex);
3010 list_for_each(p, &ti_sci_list) {
3011 info = list_entry(p, struct ti_sci_info, node);
3012 if (ti_sci_np == info->dev->of_node) {
3013 handle = &info->handle;
3014 info->users++;
3015 break;
3016 }
3017 }
3018 mutex_unlock(&ti_sci_list_mutex);
3019 of_node_put(ti_sci_np);
3020
3021 if (!handle)
3022 return ERR_PTR(-EPROBE_DEFER);
3023
3024 return handle;
3025}
3026EXPORT_SYMBOL_GPL(ti_sci_get_by_phandle);
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040const struct ti_sci_handle *devm_ti_sci_get_by_phandle(struct device *dev,
3041 const char *property)
3042{
3043 const struct ti_sci_handle *handle;
3044 const struct ti_sci_handle **ptr;
3045
3046 ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL);
3047 if (!ptr)
3048 return ERR_PTR(-ENOMEM);
3049 handle = ti_sci_get_by_phandle(dev_of_node(dev), property);
3050
3051 if (!IS_ERR(handle)) {
3052 *ptr = handle;
3053 devres_add(dev, ptr);
3054 } else {
3055 devres_free(ptr);
3056 }
3057
3058 return handle;
3059}
3060EXPORT_SYMBOL_GPL(devm_ti_sci_get_by_phandle);
3061
3062
3063
3064
3065
3066
3067
3068u16 ti_sci_get_free_resource(struct ti_sci_resource *res)
3069{
3070 unsigned long flags;
3071 u16 set, free_bit;
3072
3073 raw_spin_lock_irqsave(&res->lock, flags);
3074 for (set = 0; set < res->sets; set++) {
3075 struct ti_sci_resource_desc *desc = &res->desc[set];
3076 int res_count = desc->num + desc->num_sec;
3077
3078 free_bit = find_first_zero_bit(desc->res_map, res_count);
3079 if (free_bit != res_count) {
3080 set_bit(free_bit, desc->res_map);
3081 raw_spin_unlock_irqrestore(&res->lock, flags);
3082
3083 if (desc->num && free_bit < desc->num)
3084 return desc->start + free_bit;
3085 else
3086 return desc->start_sec + free_bit;
3087 }
3088 }
3089 raw_spin_unlock_irqrestore(&res->lock, flags);
3090
3091 return TI_SCI_RESOURCE_NULL;
3092}
3093EXPORT_SYMBOL_GPL(ti_sci_get_free_resource);
3094
3095
3096
3097
3098
3099
3100void ti_sci_release_resource(struct ti_sci_resource *res, u16 id)
3101{
3102 unsigned long flags;
3103 u16 set;
3104
3105 raw_spin_lock_irqsave(&res->lock, flags);
3106 for (set = 0; set < res->sets; set++) {
3107 struct ti_sci_resource_desc *desc = &res->desc[set];
3108
3109 if (desc->num && desc->start <= id &&
3110 (desc->start + desc->num) > id)
3111 clear_bit(id - desc->start, desc->res_map);
3112 else if (desc->num_sec && desc->start_sec <= id &&
3113 (desc->start_sec + desc->num_sec) > id)
3114 clear_bit(id - desc->start_sec, desc->res_map);
3115 }
3116 raw_spin_unlock_irqrestore(&res->lock, flags);
3117}
3118EXPORT_SYMBOL_GPL(ti_sci_release_resource);
3119
3120
3121
3122
3123
3124
3125
3126u32 ti_sci_get_num_resources(struct ti_sci_resource *res)
3127{
3128 u32 set, count = 0;
3129
3130 for (set = 0; set < res->sets; set++)
3131 count += res->desc[set].num + res->desc[set].num_sec;
3132
3133 return count;
3134}
3135EXPORT_SYMBOL_GPL(ti_sci_get_num_resources);
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148static struct ti_sci_resource *
3149devm_ti_sci_get_resource_sets(const struct ti_sci_handle *handle,
3150 struct device *dev, u32 dev_id, u32 *sub_types,
3151 u32 sets)
3152{
3153 struct ti_sci_resource *res;
3154 bool valid_set = false;
3155 int i, ret, res_count;
3156
3157 res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL);
3158 if (!res)
3159 return ERR_PTR(-ENOMEM);
3160
3161 res->sets = sets;
3162 res->desc = devm_kcalloc(dev, res->sets, sizeof(*res->desc),
3163 GFP_KERNEL);
3164 if (!res->desc)
3165 return ERR_PTR(-ENOMEM);
3166
3167 for (i = 0; i < res->sets; i++) {
3168 ret = handle->ops.rm_core_ops.get_range(handle, dev_id,
3169 sub_types[i],
3170 &res->desc[i]);
3171 if (ret) {
3172 dev_dbg(dev, "dev = %d subtype %d not allocated for this host\n",
3173 dev_id, sub_types[i]);
3174 memset(&res->desc[i], 0, sizeof(res->desc[i]));
3175 continue;
3176 }
3177
3178 dev_dbg(dev, "dev/sub_type: %d/%d, start/num: %d/%d | %d/%d\n",
3179 dev_id, sub_types[i], res->desc[i].start,
3180 res->desc[i].num, res->desc[i].start_sec,
3181 res->desc[i].num_sec);
3182
3183 valid_set = true;
3184 res_count = res->desc[i].num + res->desc[i].num_sec;
3185 res->desc[i].res_map =
3186 devm_kzalloc(dev, BITS_TO_LONGS(res_count) *
3187 sizeof(*res->desc[i].res_map), GFP_KERNEL);
3188 if (!res->desc[i].res_map)
3189 return ERR_PTR(-ENOMEM);
3190 }
3191 raw_spin_lock_init(&res->lock);
3192
3193 if (valid_set)
3194 return res;
3195
3196 return ERR_PTR(-EINVAL);
3197}
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209struct ti_sci_resource *
3210devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle,
3211 struct device *dev, u32 dev_id, char *of_prop)
3212{
3213 struct ti_sci_resource *res;
3214 u32 *sub_types;
3215 int sets;
3216
3217 sets = of_property_count_elems_of_size(dev_of_node(dev), of_prop,
3218 sizeof(u32));
3219 if (sets < 0) {
3220 dev_err(dev, "%s resource type ids not available\n", of_prop);
3221 return ERR_PTR(sets);
3222 }
3223
3224 sub_types = kcalloc(sets, sizeof(*sub_types), GFP_KERNEL);
3225 if (!sub_types)
3226 return ERR_PTR(-ENOMEM);
3227
3228 of_property_read_u32_array(dev_of_node(dev), of_prop, sub_types, sets);
3229 res = devm_ti_sci_get_resource_sets(handle, dev, dev_id, sub_types,
3230 sets);
3231
3232 kfree(sub_types);
3233 return res;
3234}
3235EXPORT_SYMBOL_GPL(devm_ti_sci_get_of_resource);
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247struct ti_sci_resource *
3248devm_ti_sci_get_resource(const struct ti_sci_handle *handle, struct device *dev,
3249 u32 dev_id, u32 sub_type)
3250{
3251 return devm_ti_sci_get_resource_sets(handle, dev, dev_id, &sub_type, 1);
3252}
3253EXPORT_SYMBOL_GPL(devm_ti_sci_get_resource);
3254
3255static int tisci_reboot_handler(struct notifier_block *nb, unsigned long mode,
3256 void *cmd)
3257{
3258 struct ti_sci_info *info = reboot_to_ti_sci_info(nb);
3259 const struct ti_sci_handle *handle = &info->handle;
3260
3261 ti_sci_cmd_core_reboot(handle);
3262
3263
3264 return NOTIFY_BAD;
3265}
3266
3267
3268static const struct ti_sci_desc ti_sci_pmmc_k2g_desc = {
3269 .default_host_id = 2,
3270
3271 .max_rx_timeout_ms = 1000,
3272
3273 .max_msgs = 20,
3274 .max_msg_size = 64,
3275};
3276
3277
3278static const struct ti_sci_desc ti_sci_pmmc_am654_desc = {
3279 .default_host_id = 12,
3280
3281 .max_rx_timeout_ms = 10000,
3282
3283 .max_msgs = 20,
3284 .max_msg_size = 60,
3285};
3286
3287static const struct of_device_id ti_sci_of_match[] = {
3288 {.compatible = "ti,k2g-sci", .data = &ti_sci_pmmc_k2g_desc},
3289 {.compatible = "ti,am654-sci", .data = &ti_sci_pmmc_am654_desc},
3290 { },
3291};
3292MODULE_DEVICE_TABLE(of, ti_sci_of_match);
3293
3294static int ti_sci_probe(struct platform_device *pdev)
3295{
3296 struct device *dev = &pdev->dev;
3297 const struct of_device_id *of_id;
3298 const struct ti_sci_desc *desc;
3299 struct ti_sci_xfer *xfer;
3300 struct ti_sci_info *info = NULL;
3301 struct ti_sci_xfers_info *minfo;
3302 struct mbox_client *cl;
3303 int ret = -EINVAL;
3304 int i;
3305 int reboot = 0;
3306 u32 h_id;
3307
3308 of_id = of_match_device(ti_sci_of_match, dev);
3309 if (!of_id) {
3310 dev_err(dev, "OF data missing\n");
3311 return -EINVAL;
3312 }
3313 desc = of_id->data;
3314
3315 info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
3316 if (!info)
3317 return -ENOMEM;
3318
3319 info->dev = dev;
3320 info->desc = desc;
3321 ret = of_property_read_u32(dev->of_node, "ti,host-id", &h_id);
3322
3323 if (ret < 0) {
3324 info->host_id = info->desc->default_host_id;
3325 } else {
3326 if (!h_id) {
3327 dev_warn(dev, "Host ID 0 is reserved for firmware\n");
3328 info->host_id = info->desc->default_host_id;
3329 } else {
3330 info->host_id = h_id;
3331 }
3332 }
3333
3334 reboot = of_property_read_bool(dev->of_node,
3335 "ti,system-reboot-controller");
3336 INIT_LIST_HEAD(&info->node);
3337 minfo = &info->minfo;
3338
3339
3340
3341
3342
3343
3344 if (WARN_ON(desc->max_msgs >=
3345 1 << 8 * sizeof(((struct ti_sci_msg_hdr *)0)->seq)))
3346 return -EINVAL;
3347
3348 minfo->xfer_block = devm_kcalloc(dev,
3349 desc->max_msgs,
3350 sizeof(*minfo->xfer_block),
3351 GFP_KERNEL);
3352 if (!minfo->xfer_block)
3353 return -ENOMEM;
3354
3355 minfo->xfer_alloc_table = devm_kcalloc(dev,
3356 BITS_TO_LONGS(desc->max_msgs),
3357 sizeof(unsigned long),
3358 GFP_KERNEL);
3359 if (!minfo->xfer_alloc_table)
3360 return -ENOMEM;
3361 bitmap_zero(minfo->xfer_alloc_table, desc->max_msgs);
3362
3363
3364 for (i = 0, xfer = minfo->xfer_block; i < desc->max_msgs; i++, xfer++) {
3365 xfer->xfer_buf = devm_kcalloc(dev, 1, desc->max_msg_size,
3366 GFP_KERNEL);
3367 if (!xfer->xfer_buf)
3368 return -ENOMEM;
3369
3370 xfer->tx_message.buf = xfer->xfer_buf;
3371 init_completion(&xfer->done);
3372 }
3373
3374 ret = ti_sci_debugfs_create(pdev, info);
3375 if (ret)
3376 dev_warn(dev, "Failed to create debug file\n");
3377
3378 platform_set_drvdata(pdev, info);
3379
3380 cl = &info->cl;
3381 cl->dev = dev;
3382 cl->tx_block = false;
3383 cl->rx_callback = ti_sci_rx_callback;
3384 cl->knows_txdone = true;
3385
3386 spin_lock_init(&minfo->xfer_lock);
3387 sema_init(&minfo->sem_xfer_count, desc->max_msgs);
3388
3389 info->chan_rx = mbox_request_channel_byname(cl, "rx");
3390 if (IS_ERR(info->chan_rx)) {
3391 ret = PTR_ERR(info->chan_rx);
3392 goto out;
3393 }
3394
3395 info->chan_tx = mbox_request_channel_byname(cl, "tx");
3396 if (IS_ERR(info->chan_tx)) {
3397 ret = PTR_ERR(info->chan_tx);
3398 goto out;
3399 }
3400 ret = ti_sci_cmd_get_revision(info);
3401 if (ret) {
3402 dev_err(dev, "Unable to communicate with TISCI(%d)\n", ret);
3403 goto out;
3404 }
3405
3406 ti_sci_setup_ops(info);
3407
3408 if (reboot) {
3409 info->nb.notifier_call = tisci_reboot_handler;
3410 info->nb.priority = 128;
3411
3412 ret = register_restart_handler(&info->nb);
3413 if (ret) {
3414 dev_err(dev, "reboot registration fail(%d)\n", ret);
3415 return ret;
3416 }
3417 }
3418
3419 dev_info(dev, "ABI: %d.%d (firmware rev 0x%04x '%s')\n",
3420 info->handle.version.abi_major, info->handle.version.abi_minor,
3421 info->handle.version.firmware_revision,
3422 info->handle.version.firmware_description);
3423
3424 mutex_lock(&ti_sci_list_mutex);
3425 list_add_tail(&info->node, &ti_sci_list);
3426 mutex_unlock(&ti_sci_list_mutex);
3427
3428 return of_platform_populate(dev->of_node, NULL, NULL, dev);
3429out:
3430 if (!IS_ERR(info->chan_tx))
3431 mbox_free_channel(info->chan_tx);
3432 if (!IS_ERR(info->chan_rx))
3433 mbox_free_channel(info->chan_rx);
3434 debugfs_remove(info->d);
3435 return ret;
3436}
3437
3438static int ti_sci_remove(struct platform_device *pdev)
3439{
3440 struct ti_sci_info *info;
3441 struct device *dev = &pdev->dev;
3442 int ret = 0;
3443
3444 of_platform_depopulate(dev);
3445
3446 info = platform_get_drvdata(pdev);
3447
3448 if (info->nb.notifier_call)
3449 unregister_restart_handler(&info->nb);
3450
3451 mutex_lock(&ti_sci_list_mutex);
3452 if (info->users)
3453 ret = -EBUSY;
3454 else
3455 list_del(&info->node);
3456 mutex_unlock(&ti_sci_list_mutex);
3457
3458 if (!ret) {
3459 ti_sci_debugfs_destroy(pdev, info);
3460
3461
3462 mbox_free_channel(info->chan_tx);
3463 mbox_free_channel(info->chan_rx);
3464 }
3465
3466 return ret;
3467}
3468
3469static struct platform_driver ti_sci_driver = {
3470 .probe = ti_sci_probe,
3471 .remove = ti_sci_remove,
3472 .driver = {
3473 .name = "ti-sci",
3474 .of_match_table = of_match_ptr(ti_sci_of_match),
3475 },
3476};
3477module_platform_driver(ti_sci_driver);
3478
3479MODULE_LICENSE("GPL v2");
3480MODULE_DESCRIPTION("TI System Control Interface(SCI) driver");
3481MODULE_AUTHOR("Nishanth Menon");
3482MODULE_ALIAS("platform:ti-sci");
3483