forked from someone42/cgminer
-
Notifications
You must be signed in to change notification settings - Fork 0
/
driver-modminer.c
1141 lines (889 loc) · 30.3 KB
/
driver-modminer.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Copyright 2012-2013 Andrew Smith
* Copyright 2012 Luke Dashjr
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 3 of the License, or (at your option)
* any later version. See COPYING for more details.
*/
#include "config.h"
#include <stdarg.h>
#include <stdio.h>
#include <unistd.h>
#include <math.h>
#include "logging.h"
#include "miner.h"
#include "usbutils.h"
#include "fpgautils.h"
#include "util.h"
#define BITSTREAM_FILENAME "fpgaminer_top_fixed7_197MHz.ncd"
#define BISTREAM_USER_ID "\2\4$B"
#define BITSTREAM_MAGIC_0 0
#define BITSTREAM_MAGIC_1 9
#define MODMINER_CUTOFF_TEMP 60.0
#define MODMINER_OVERHEAT_TEMP 50.0
#define MODMINER_RECOVER_TEMP 46.5
#define MODMINER_TEMP_UP_LIMIT 47.0
#define MODMINER_HW_ERROR_PERCENT 0.75
// How many seconds of no nonces means there's something wrong
// First time - drop the clock and see if it revives
// Second time - (and it didn't revive) disable it
#define ITS_DEAD_JIM 300
// N.B. in the latest firmware the limit is 250
// however the voltage/temperature risks preclude that
#define MODMINER_MAX_CLOCK 230
#define MODMINER_DEF_CLOCK 200
#define MODMINER_MIN_CLOCK 160
#define MODMINER_CLOCK_UP 2
#define MODMINER_CLOCK_SET 0
#define MODMINER_CLOCK_DOWN -2
// = 0 means OVERHEAT doesn't affect the clock
#define MODMINER_CLOCK_OVERHEAT 0
#define MODMINER_CLOCK_DEAD -6
#define MODMINER_CLOCK_CUTOFF -10
// Commands
#define MODMINER_PING "\x00"
#define MODMINER_GET_VERSION "\x01"
#define MODMINER_FPGA_COUNT "\x02"
// Commands + require FPGAid
#define MODMINER_GET_IDCODE '\x03'
#define MODMINER_GET_USERCODE '\x04'
#define MODMINER_PROGRAM '\x05'
#define MODMINER_SET_CLOCK '\x06'
#define MODMINER_READ_CLOCK '\x07'
#define MODMINER_SEND_WORK '\x08'
#define MODMINER_CHECK_WORK '\x09'
// One byte temperature reply
#define MODMINER_TEMP1 '\x0a'
// Two byte temperature reply
#define MODMINER_TEMP2 '\x0d'
// +6 bytes
#define MODMINER_SET_REG '\x0b'
// +2 bytes
#define MODMINER_GET_REG '\x0c'
#define FPGAID_ALL 4
// Maximum how many good shares in a row means clock up
// 96 is ~34m22s at 200MH/s
#define MODMINER_TRY_UP 96
// Initially how many good shares in a row means clock up
// This is doubled each down clock until it reaches MODMINER_TRY_UP
// 6 is ~2m9s at 200MH/s
#define MODMINER_EARLY_UP 6
// Limit when reducing shares_to_good
#define MODMINER_MIN_BACK 12
// 45 noops sent when detecting, in case the device was left in "start job" reading
static const char NOOP[] = MODMINER_PING "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff";
static void do_ping(struct cgpu_info *modminer)
{
char buf[0x100+1];
int err, amount;
// Don't care if it fails
err = usb_write(modminer, (char *)NOOP, sizeof(NOOP)-1, &amount, C_PING);
applog(LOG_DEBUG, "%s%u: flush noop got %d err %d",
modminer->drv->name, modminer->fpgaid, amount, err);
// Clear any outstanding data
while ((err = usb_read_once(modminer, buf, sizeof(buf)-1, &amount, C_CLEAR)) == 0 && amount > 0)
applog(LOG_DEBUG, "%s%u: clear got %d",
modminer->drv->name, modminer->fpgaid, amount);
applog(LOG_DEBUG, "%s%u: final clear got %d err %d",
modminer->drv->name, modminer->fpgaid, amount, err);
}
static struct cgpu_info *modminer_detect_one(struct libusb_device *dev, struct usb_find_devices *found)
{
char buf[0x100+1];
char *devname = NULL;
char devpath[32];
int err, i, amount;
bool added = false;
struct cgpu_info *modminer = usb_alloc_cgpu(&modminer_drv, 1);
modminer->modminer_mutex = calloc(1, sizeof(*(modminer->modminer_mutex)));
mutex_init(modminer->modminer_mutex);
modminer->fpgaid = (char)0;
if (!usb_init(modminer, dev, found))
goto shin;
do_ping(modminer);
if ((err = usb_write(modminer, MODMINER_GET_VERSION, 1, &amount, C_REQUESTVERSION)) < 0 || amount != 1) {
applog(LOG_ERR, "%s detect (%s) send version request failed (%d:%d)",
modminer->drv->dname, modminer->device_path, amount, err);
goto unshin;
}
if ((err = usb_read_once(modminer, buf, sizeof(buf)-1, &amount, C_GETVERSION)) < 0 || amount < 1) {
if (err < 0)
applog(LOG_ERR, "%s detect (%s) no version reply (%d)",
modminer->drv->dname, modminer->device_path, err);
else
applog(LOG_ERR, "%s detect (%s) empty version reply (%d)",
modminer->drv->dname, modminer->device_path, amount);
applog(LOG_DEBUG, "%s detect (%s) check the firmware",
modminer->drv->dname, modminer->device_path);
goto unshin;
}
buf[amount] = '\0';
devname = strdup(buf);
applog(LOG_DEBUG, "%s (%s) identified as: %s", modminer->drv->dname, modminer->device_path, devname);
if ((err = usb_write(modminer, MODMINER_FPGA_COUNT, 1, &amount, C_REQUESTFPGACOUNT) < 0 || amount != 1)) {
applog(LOG_ERR, "%s detect (%s) FPGA count request failed (%d:%d)",
modminer->drv->dname, modminer->device_path, amount, err);
goto unshin;
}
if ((err = usb_read(modminer, buf, 1, &amount, C_GETFPGACOUNT)) < 0 || amount != 1) {
applog(LOG_ERR, "%s detect (%s) no FPGA count reply (%d:%d)",
modminer->drv->dname, modminer->device_path, amount, err);
goto unshin;
}
// TODO: flag it use 1 byte temp if it is an old firmware
// can detect with modminer->cgusb->serial ?
if (buf[0] == 0) {
applog(LOG_ERR, "%s detect (%s) zero FPGA count from %s",
modminer->drv->dname, modminer->device_path, devname);
goto unshin;
}
if (buf[0] < 1 || buf[0] > 4) {
applog(LOG_ERR, "%s detect (%s) invalid FPGA count (%u) from %s",
modminer->drv->dname, modminer->device_path, buf[0], devname);
goto unshin;
}
applog(LOG_DEBUG, "%s (%s) %s has %u FPGAs",
modminer->drv->dname, modminer->device_path, devname, buf[0]);
modminer->name = devname;
// TODO: test with 1 board missing in the middle and each end
// to see how that affects the sequence numbers
for (i = 0; i < buf[0]; i++) {
struct cgpu_info *tmp = usb_copy_cgpu(modminer);
sprintf(devpath, "%d:%d:%d",
(int)(modminer->usbinfo.bus_number),
(int)(modminer->usbinfo.device_address),
i);
tmp->device_path = strdup(devpath);
// Only the first copy gets the already used stats
if (added)
tmp->usbinfo.usbstat = USB_NOSTAT;
tmp->fpgaid = (char)i;
tmp->modminer_mutex = modminer->modminer_mutex;
if (!add_cgpu(tmp)) {
tmp = usb_free_cgpu(tmp);
goto unshin;
}
update_usb_stats(tmp);
added = true;
}
modminer = usb_free_cgpu(modminer);
return modminer;
unshin:
if (!added)
usb_uninit(modminer);
shin:
if (!added) {
free(modminer->modminer_mutex);
modminer->modminer_mutex = NULL;
}
modminer = usb_free_cgpu(modminer);
if (added)
return modminer;
else
return NULL;
}
static void modminer_detect(bool __maybe_unused hotplug)
{
usb_detect(&modminer_drv, modminer_detect_one);
}
static bool get_expect(struct cgpu_info *modminer, FILE *f, char c)
{
char buf;
if (fread(&buf, 1, 1, f) != 1) {
applog(LOG_ERR, "%s%u: Error (%d) reading bitstream (%c)",
modminer->drv->name, modminer->device_id, errno, c);
return false;
}
if (buf != c) {
applog(LOG_ERR, "%s%u: bitstream code mismatch (%c)",
modminer->drv->name, modminer->device_id, c);
return false;
}
return true;
}
static bool get_info(struct cgpu_info *modminer, FILE *f, char *buf, int bufsiz, const char *name)
{
unsigned char siz[2];
int len;
if (fread(siz, 2, 1, f) != 1) {
applog(LOG_ERR, "%s%u: Error (%d) reading bitstream '%s' len",
modminer->drv->name, modminer->device_id, errno, name);
return false;
}
len = siz[0] * 256 + siz[1];
if (len >= bufsiz) {
applog(LOG_ERR, "%s%u: Bitstream '%s' len too large (%d)",
modminer->drv->name, modminer->device_id, name, len);
return false;
}
if (fread(buf, len, 1, f) != 1) {
applog(LOG_ERR, "%s%u: Error (%d) reading bitstream '%s'",
modminer->drv->name, modminer->device_id, errno, name);
return false;
}
buf[len] = '\0';
return true;
}
#define USE_DEFAULT_TIMEOUT 0
// mutex must always be locked before calling
static bool get_status_timeout(struct cgpu_info *modminer, char *msg, unsigned int timeout, enum usb_cmds cmd)
{
int err, amount;
char buf[1];
if (timeout == USE_DEFAULT_TIMEOUT)
err = usb_read(modminer, buf, 1, &amount, cmd);
else
err = usb_read_timeout(modminer, buf, 1, &amount, timeout, cmd);
if (err < 0 || amount != 1) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Error (%d:%d) getting %s reply",
modminer->drv->name, modminer->device_id, amount, err, msg);
return false;
}
if (buf[0] != 1) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Error, invalid %s reply (was %d should be 1)",
modminer->drv->name, modminer->device_id, msg, buf[0]);
return false;
}
return true;
}
// mutex must always be locked before calling
static bool get_status(struct cgpu_info *modminer, char *msg, enum usb_cmds cmd)
{
return get_status_timeout(modminer, msg, USE_DEFAULT_TIMEOUT, cmd);
}
static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
{
const char *bsfile = BITSTREAM_FILENAME;
char buf[0x100], *p;
char devmsg[64];
unsigned char *ubuf = (unsigned char *)buf;
unsigned long totlen, len;
size_t buflen, remaining;
float nextmsg, upto;
char fpgaid = FPGAID_ALL;
int err, amount, tries;
char *ptr;
FILE *f = open_bitstream("modminer", bsfile);
if (!f) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Error (%d) opening bitstream file %s",
modminer->drv->name, modminer->device_id, errno, bsfile);
return false;
}
if (fread(buf, 2, 1, f) != 1) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Error (%d) reading bitstream magic",
modminer->drv->name, modminer->device_id, errno);
goto dame;
}
if (buf[0] != BITSTREAM_MAGIC_0 || buf[1] != BITSTREAM_MAGIC_1) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: bitstream has incorrect magic (%u,%u) instead of (%u,%u)",
modminer->drv->name, modminer->device_id,
buf[0], buf[1],
BITSTREAM_MAGIC_0, BITSTREAM_MAGIC_1);
goto dame;
}
if (fseek(f, 11L, SEEK_CUR)) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Error (%d) bitstream seek failed",
modminer->drv->name, modminer->device_id, errno);
goto dame;
}
if (!get_expect(modminer, f, 'a'))
goto undame;
if (!get_info(modminer, f, buf, sizeof(buf), "Design name"))
goto undame;
applog(LOG_DEBUG, "%s%u: bitstream file '%s' info:",
modminer->drv->name, modminer->device_id, bsfile);
applog(LOG_DEBUG, " Design name: '%s'", buf);
p = strrchr(buf, ';') ? : buf;
p = strrchr(buf, '=') ? : p;
if (p[0] == '=')
p++;
unsigned long fwusercode = (unsigned long)strtoll(p, &p, 16);
if (p[0] != '\0') {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Bad usercode in bitstream file",
modminer->drv->name, modminer->device_id);
goto dame;
}
if (fwusercode == 0xffffffff) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: bitstream doesn't support user code",
modminer->drv->name, modminer->device_id);
goto dame;
}
applog(LOG_DEBUG, " Version: %lu, build %lu", (fwusercode >> 8) & 0xff, fwusercode & 0xff);
if (!get_expect(modminer, f, 'b'))
goto undame;
if (!get_info(modminer, f, buf, sizeof(buf), "Part number"))
goto undame;
applog(LOG_DEBUG, " Part number: '%s'", buf);
if (!get_expect(modminer, f, 'c'))
goto undame;
if (!get_info(modminer, f, buf, sizeof(buf), "Build date"))
goto undame;
applog(LOG_DEBUG, " Build date: '%s'", buf);
if (!get_expect(modminer, f, 'd'))
goto undame;
if (!get_info(modminer, f, buf, sizeof(buf), "Build time"))
goto undame;
applog(LOG_DEBUG, " Build time: '%s'", buf);
if (!get_expect(modminer, f, 'e'))
goto undame;
if (fread(buf, 4, 1, f) != 1) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Error (%d) reading bitstream data len",
modminer->drv->name, modminer->device_id, errno);
goto dame;
}
len = ((unsigned long)ubuf[0] << 24) | ((unsigned long)ubuf[1] << 16) | (ubuf[2] << 8) | ubuf[3];
applog(LOG_DEBUG, " Bitstream size: %lu", len);
strcpy(devmsg, modminer->device_path);
ptr = strrchr(devmsg, ':');
if (ptr)
*ptr = '\0';
applog(LOG_WARNING, "%s%u: Programming all FPGA on %s ... Mining will not start until complete",
modminer->drv->name, modminer->device_id, devmsg);
buf[0] = MODMINER_PROGRAM;
buf[1] = fpgaid;
buf[2] = (len >> 0) & 0xff;
buf[3] = (len >> 8) & 0xff;
buf[4] = (len >> 16) & 0xff;
buf[5] = (len >> 24) & 0xff;
if ((err = usb_write(modminer, buf, 6, &amount, C_STARTPROGRAM)) < 0 || amount != 6) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Program init failed (%d:%d)",
modminer->drv->name, modminer->device_id, amount, err);
goto dame;
}
if (!get_status(modminer, "initialise", C_STARTPROGRAMSTATUS))
goto undame;
// It must be 32 bytes according to MCU legacy.c
#define WRITE_SIZE 32
totlen = len;
nextmsg = 0.1;
while (len > 0) {
buflen = len < WRITE_SIZE ? len : WRITE_SIZE;
if (fread(buf, buflen, 1, f) != 1) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: bitstream file read error %d (%lu bytes left)",
modminer->drv->name, modminer->device_id, errno, len);
goto dame;
}
tries = 0;
ptr = buf;
remaining = buflen;
while ((err = usb_write(modminer, ptr, remaining, &amount, C_PROGRAM)) < 0 || amount != (int)remaining) {
if (err == LIBUSB_ERROR_TIMEOUT && amount > 0 && ++tries < 4) {
remaining -= amount;
ptr += amount;
if (opt_debug)
applog(LOG_DEBUG, "%s%u: Program timeout (%d:%d) sent %d tries %d",
modminer->drv->name, modminer->device_id,
amount, err, (int)remaining, tries);
if (!get_status(modminer, "write status", C_PROGRAMSTATUS2))
goto dame;
} else {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Program failed (%d:%d) sent %d",
modminer->drv->name, modminer->device_id, amount, err, (int)remaining);
goto dame;
}
}
if (!get_status(modminer, "write status", C_PROGRAMSTATUS))
goto dame;
len -= buflen;
upto = (float)(totlen - len) / (float)(totlen);
if (upto >= nextmsg) {
applog(LOG_WARNING,
"%s%u: Programming %.1f%% (%lu out of %lu)",
modminer->drv->name, modminer->device_id, upto*100, (totlen - len), totlen);
nextmsg += 0.1;
}
}
if (!get_status(modminer, "final status", C_FINALPROGRAMSTATUS))
goto undame;
applog(LOG_WARNING, "%s%u: Programming completed for all FPGA on %s",
modminer->drv->name, modminer->device_id, devmsg);
// Give it a 2/3s delay after programming
cgsleep_ms(666);
usb_set_dev_start(modminer);
return true;
undame:
;
mutex_unlock(modminer->modminer_mutex);
;
dame:
fclose(f);
return false;
}
static bool modminer_fpga_prepare(struct thr_info *thr)
{
// struct cgpu_info *modminer = thr->cgpu;
struct modminer_fpga_state *state;
state = thr->cgpu_data = calloc(1, sizeof(struct modminer_fpga_state));
state->shares_to_good = MODMINER_EARLY_UP;
state->overheated = false;
return true;
}
/*
* Clocking rules:
* If device exceeds cutoff or overheat temp - stop sending work until it cools
* decrease the clock by MODMINER_CLOCK_CUTOFF/MODMINER_CLOCK_OVERHEAT
* for when it restarts
* with MODMINER_CLOCK_OVERHEAT=0 basically says that temp shouldn't
* affect the clock unless we reach CUTOFF
*
* If device overheats
* set shares_to_good back to MODMINER_MIN_BACK
* to speed up clock recovery if temp drop doesnt help
*
* When to clock down:
* If device gets MODMINER_HW_ERROR_PERCENT errors since last clock up or down
* if clock is <= default it requires 2 HW to do this test
* if clock is > default it only requires 1 HW to do this test
* also double shares_to_good
*
* When to clock up:
* If device gets shares_to_good good shares in a row
* and temp < MODMINER_TEMP_UP_LIMIT
*
* N.B. clock must always be a multiple of 2
*/
static const char *clocknodev = "clock failed - no device";
static const char *clockoldwork = "clock already changed for this work";
static const char *clocktoolow = "clock too low";
static const char *clocktoohi = "clock too high";
static const char *clocksetfail = "clock set command failed";
static const char *clockreplyfail = "clock reply failed";
static const char *modminer_delta_clock(struct thr_info *thr, int delta, bool temp, bool force)
{
struct cgpu_info *modminer = thr->cgpu;
struct modminer_fpga_state *state = thr->cgpu_data;
unsigned char cmd[6], buf[1];
int err, amount;
// Device is gone
if (modminer->usbinfo.nodev)
return clocknodev;
// Only do once if multiple shares per work or multiple reasons
if (!state->new_work && !force)
return clockoldwork;
state->new_work = false;
state->shares = 0;
state->shares_last_hw = 0;
state->hw_errors = 0;
// FYI clock drop has little effect on temp
if (delta < 0 && (modminer->clock + delta) < MODMINER_MIN_CLOCK)
return clocktoolow;
if (delta > 0 && (modminer->clock + delta) > MODMINER_MAX_CLOCK)
return clocktoohi;
if (delta < 0) {
if (temp)
state->shares_to_good = MODMINER_MIN_BACK;
else {
if ((state->shares_to_good * 2) < MODMINER_TRY_UP)
state->shares_to_good *= 2;
else
state->shares_to_good = MODMINER_TRY_UP;
}
}
modminer->clock += delta;
cmd[0] = MODMINER_SET_CLOCK;
cmd[1] = modminer->fpgaid;
cmd[2] = modminer->clock;
cmd[3] = cmd[4] = cmd[5] = '\0';
mutex_lock(modminer->modminer_mutex);
if ((err = usb_write(modminer, (char *)cmd, 6, &amount, C_SETCLOCK)) < 0 || amount != 6) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Error writing set clock speed (%d:%d)",
modminer->drv->name, modminer->device_id, amount, err);
return clocksetfail;
}
if ((err = usb_read(modminer, (char *)(&buf), 1, &amount, C_REPLYSETCLOCK)) < 0 || amount != 1) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Error reading set clock speed (%d:%d)",
modminer->drv->name, modminer->device_id, amount, err);
return clockreplyfail;
}
mutex_unlock(modminer->modminer_mutex);
applog(LOG_WARNING, "%s%u: Set clock speed %sto %u",
modminer->drv->name, modminer->device_id,
(delta < 0) ? "down " : (delta > 0 ? "up " : ""),
modminer->clock);
return NULL;
}
static bool modminer_fpga_init(struct thr_info *thr)
{
struct cgpu_info *modminer = thr->cgpu;
unsigned char cmd[2], buf[4];
int err, amount;
mutex_lock(modminer->modminer_mutex);
cmd[0] = MODMINER_GET_USERCODE;
cmd[1] = modminer->fpgaid;
if ((err = usb_write(modminer, (char *)cmd, 2, &amount, C_REQUESTUSERCODE)) < 0 || amount != 2) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Error requesting USER code (%d:%d)",
modminer->drv->name, modminer->device_id, amount, err);
return false;
}
if ((err = usb_read(modminer, (char *)buf, 4, &amount, C_GETUSERCODE)) < 0 || amount != 4) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Error reading USER code (%d:%d)",
modminer->drv->name, modminer->device_id, amount, err);
return false;
}
if (memcmp(buf, BISTREAM_USER_ID, 4)) {
applog(LOG_ERR, "%s%u: FPGA not programmed",
modminer->drv->name, modminer->device_id);
if (!modminer_fpga_upload_bitstream(modminer))
return false;
mutex_unlock(modminer->modminer_mutex);
} else {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_DEBUG, "%s%u: FPGA is already programmed :)",
modminer->drv->name, modminer->device_id);
}
modminer->clock = MODMINER_DEF_CLOCK;
modminer_delta_clock(thr, MODMINER_CLOCK_SET, false, false);
thr->primary_thread = true;
return true;
}
static void get_modminer_statline_before(char *buf, size_t bufsiz, struct cgpu_info *modminer)
{
tailsprintf(buf, bufsiz, "%s%.1fC %3uMHz",
(modminer->temp < 10) ? " " : "",
modminer->temp,
(unsigned int)(modminer->clock));
}
static bool modminer_start_work(struct thr_info *thr, struct work *work)
{
struct cgpu_info *modminer = thr->cgpu;
struct modminer_fpga_state *state = thr->cgpu_data;
int err, amount;
char cmd[48];
bool sta;
cmd[0] = MODMINER_SEND_WORK;
cmd[1] = modminer->fpgaid;
memcpy(&cmd[2], work->midstate, 32);
memcpy(&cmd[34], work->data + 64, 12);
if (state->first_work.tv_sec == 0)
cgtime(&state->first_work);
if (state->last_nonce.tv_sec == 0)
cgtime(&state->last_nonce);
mutex_lock(modminer->modminer_mutex);
if ((err = usb_write(modminer, cmd, 46, &amount, C_SENDWORK)) < 0 || amount != 46) {
mutex_unlock(modminer->modminer_mutex);
applog(LOG_ERR, "%s%u: Start work failed (%d:%d)",
modminer->drv->name, modminer->device_id, amount, err);
return false;
}
cgtime(&state->tv_workstart);
sta = get_status(modminer, "start work", C_SENDWORKSTATUS);
if (sta) {
mutex_unlock(modminer->modminer_mutex);
state->new_work = true;
}
return sta;
}
static void check_temperature(struct thr_info *thr)
{
struct cgpu_info *modminer = thr->cgpu;
struct modminer_fpga_state *state = thr->cgpu_data;
char cmd[2], temperature[2];
int tbytes, tamount;
int amount;
// Device is gone
if (modminer->usbinfo.nodev)
return;
if (state->one_byte_temp) {
cmd[0] = MODMINER_TEMP1;
tbytes = 1;
} else {
cmd[0] = MODMINER_TEMP2;
tbytes = 2;
}
cmd[1] = modminer->fpgaid;
mutex_lock(modminer->modminer_mutex);
if (usb_write(modminer, (char *)cmd, 2, &amount, C_REQUESTTEMPERATURE) == 0 && amount == 2 &&
usb_read(modminer, (char *)(&temperature), tbytes, &tamount, C_GETTEMPERATURE) == 0 && tamount == tbytes) {
mutex_unlock(modminer->modminer_mutex);
if (state->one_byte_temp)
modminer->temp = temperature[0];
else {
// Only accurate to 2 and a bit places
modminer->temp = roundf((temperature[1] * 256.0 + temperature[0]) / 0.128) / 1000.0;
state->tried_two_byte_temp = true;
}
if (state->overheated) {
// Limit recovery to lower than OVERHEAT so it doesn't just go straight over again
if (modminer->temp < MODMINER_RECOVER_TEMP) {
state->overheated = false;
applog(LOG_WARNING, "%s%u: Recovered, temp less than (%.1f) now %.3f",
modminer->drv->name, modminer->device_id,
MODMINER_RECOVER_TEMP, modminer->temp);
}
}
else if (modminer->temp >= MODMINER_OVERHEAT_TEMP) {
if (modminer->temp >= MODMINER_CUTOFF_TEMP) {
applog(LOG_WARNING, "%s%u: Hit thermal cutoff limit! (%.1f) at %.3f",
modminer->drv->name, modminer->device_id,
MODMINER_CUTOFF_TEMP, modminer->temp);
modminer_delta_clock(thr, MODMINER_CLOCK_CUTOFF, true, false);
state->overheated = true;
dev_error(modminer, REASON_DEV_THERMAL_CUTOFF);
} else {
applog(LOG_WARNING, "%s%u: Overheat limit (%.1f) reached %.3f",
modminer->drv->name, modminer->device_id,
MODMINER_OVERHEAT_TEMP, modminer->temp);
// If it's defined to be 0 then don't call modminer_delta_clock()
if (MODMINER_CLOCK_OVERHEAT != 0)
modminer_delta_clock(thr, MODMINER_CLOCK_OVERHEAT, true, false);
state->overheated = true;
dev_error(modminer, REASON_DEV_OVER_HEAT);
}
}
} else {
mutex_unlock(modminer->modminer_mutex);
if (!state->tried_two_byte_temp) {
state->tried_two_byte_temp = true;
state->one_byte_temp = true;
}
}
}
#define work_restart(thr) thr->work_restart
// 250Mhz is 17.17s - ensure we don't go idle
static const double processtime = 17.0;
// 160Mhz is 26.84 - when overheated ensure we don't throw away shares
static const double overheattime = 26.9;
static uint64_t modminer_process_results(struct thr_info *thr, struct work *work)
{
struct cgpu_info *modminer = thr->cgpu;
struct modminer_fpga_state *state = thr->cgpu_data;
struct timeval now;
char cmd[2];
uint32_t nonce;
uint32_t curr_hw_errors;
int err, amount, amount2;
int timeoutloop;
double timeout;
int temploop;
// Device is gone
if (modminer->usbinfo.nodev)
return -1;
// If we are overheated it will just keep checking for results
// since we can't stop the work
// The next work will not start until the temp drops
check_temperature(thr);
cmd[0] = MODMINER_CHECK_WORK;
cmd[1] = modminer->fpgaid;
timeoutloop = 0;
temploop = 0;
while (0x80085) {
mutex_lock(modminer->modminer_mutex);
if ((err = usb_write(modminer, cmd, 2, &amount, C_REQUESTWORKSTATUS)) < 0 || amount != 2) {
mutex_unlock(modminer->modminer_mutex);
// timeoutloop never resets so the timeouts can't
// accumulate much during a single item of work
if (err == LIBUSB_ERROR_TIMEOUT && ++timeoutloop < 5) {
state->timeout_fail++;
goto tryagain;
}
applog(LOG_ERR, "%s%u: Error sending (get nonce) (%d:%d)",
modminer->drv->name, modminer->device_id, amount, err);
return -1;
}
err = usb_read(modminer, (char *)(&nonce), 4, &amount, C_GETWORKSTATUS);
while (err == LIBUSB_SUCCESS && amount < 4) {
size_t remain = 4 - amount;
char *pos = ((char *)(&nonce)) + amount;
state->success_more++;
err = usb_read(modminer, pos, remain, &amount2, C_GETWORKSTATUS);
amount += amount2;
}
mutex_unlock(modminer->modminer_mutex);
if (err < 0 || amount < 4) {
// timeoutloop never resets so the timeouts can't
// accumulate much during a single item of work
if (err == LIBUSB_ERROR_TIMEOUT && ++timeoutloop < 10) {
state->timeout_fail++;
goto tryagain;
}
applog(LOG_ERR, "%s%u: Error reading (get nonce) (%d:%d)",
modminer->drv->name, modminer->device_id, amount+amount2, err);
}
if (memcmp(&nonce, "\xff\xff\xff\xff", 4)) {
// found 'something' ...
state->shares++;
curr_hw_errors = state->hw_errors;
submit_nonce(thr, work, nonce);
if (state->hw_errors > curr_hw_errors) {
cgtime(&now);
// Ignore initial errors that often happen
if (tdiff(&now, &state->first_work) < 2.0) {
state->shares = 0;
state->shares_last_hw = 0;
state->hw_errors = 0;
} else {
state->shares_last_hw = state->shares;
if (modminer->clock > MODMINER_DEF_CLOCK || state->hw_errors > 1) {
float pct = (state->hw_errors * 100.0 / (state->shares ? : 1.0));
if (pct >= MODMINER_HW_ERROR_PERCENT)
modminer_delta_clock(thr, MODMINER_CLOCK_DOWN, false, false);
}
}
} else {
cgtime(&state->last_nonce);
state->death_stage_one = false;
// If we've reached the required good shares in a row then clock up
if (((state->shares - state->shares_last_hw) >= state->shares_to_good) &&
modminer->temp < MODMINER_TEMP_UP_LIMIT)
modminer_delta_clock(thr, MODMINER_CLOCK_UP, false, false);
}
} else {
// on rare occasions - the MMQ can just stop returning valid nonces
double death = ITS_DEAD_JIM * (state->death_stage_one ? 2.0 : 1.0);
cgtime(&now);
if (tdiff(&now, &state->last_nonce) >= death) {
if (state->death_stage_one) {
modminer_delta_clock(thr, MODMINER_CLOCK_DEAD, false, true);
applog(LOG_ERR, "%s%u: DEATH clock down",
modminer->drv->name, modminer->device_id);
// reset the death info and DISABLE it
state->last_nonce.tv_sec = 0;
state->last_nonce.tv_usec = 0;
state->death_stage_one = false;
return -1;
} else {
modminer_delta_clock(thr, MODMINER_CLOCK_DEAD, false, true);
applog(LOG_ERR, "%s%u: death clock down",
modminer->drv->name, modminer->device_id);
state->death_stage_one = true;
}
}
}
tryagain:
if (work_restart(thr))
break;
if (state->overheated == true) {
// don't check every time (every ~1/2 sec)
if (++temploop > 4) {
check_temperature(thr);
temploop = 0;
}