forked from analogdevicesinc/linux
-
Notifications
You must be signed in to change notification settings - Fork 3
/
8139too.c
2646 lines (2188 loc) · 69.8 KB
/
8139too.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
/*
8139too.c: A RealTek RTL-8139 Fast Ethernet driver for Linux.
Maintained by Jeff Garzik <[email protected]>
Copyright 2000-2002 Jeff Garzik
Much code comes from Donald Becker's rtl8139.c driver,
versions 1.13 and older. This driver was originally based
on rtl8139.c version 1.07. Header of rtl8139.c version 1.13:
-----<snip>-----
Written 1997-2001 by Donald Becker.
This software may be used and distributed according to the
terms of the GNU General Public License (GPL), incorporated
herein by reference. Drivers based on or derived from this
code fall under the GPL and must retain the authorship,
copyright and license notice. This file is not a complete
program and may only be used when the entire operating
system is licensed under the GPL.
This driver is for boards based on the RTL8129 and RTL8139
PCI ethernet chips.
The author may be reached as [email protected], or C/O Scyld
Computing Corporation 410 Severn Ave., Suite 210 Annapolis
MD 21403
Support and updates available at
http://www.scyld.com/network/rtl8139.html
Twister-tuning table provided by Kinston
-----<snip>-----
This software may be used and distributed according to the terms
of the GNU General Public License, incorporated herein by reference.
Contributors:
Donald Becker - he wrote the original driver, kudos to him!
(but please don't e-mail him for support, this isn't his driver)
Tigran Aivazian - bug fixes, skbuff free cleanup
Martin Mares - suggestions for PCI cleanup
David S. Miller - PCI DMA and softnet updates
Ernst Gill - fixes ported from BSD driver
Daniel Kobras - identified specific locations of
posted MMIO write bugginess
Gerard Sharp - bug fix, testing and feedback
David Ford - Rx ring wrap fix
Dan DeMaggio - swapped RTL8139 cards with me, and allowed me
to find and fix a crucial bug on older chipsets.
Donald Becker/Chris Butterworth/Marcus Westergren -
Noticed various Rx packet size-related buglets.
Santiago Garcia Mantinan - testing and feedback
Jens David - 2.2.x kernel backports
Martin Dennett - incredibly helpful insight on undocumented
features of the 8139 chips
Jean-Jacques Michel - bug fix
Tobias Ringström - Rx interrupt status checking suggestion
Andrew Morton - Clear blocked signals, avoid
buffer overrun setting current->comm.
Kalle Olavi Niemitalo - Wake-on-LAN ioctls
Robert Kuebel - Save kernel thread from dying on any signal.
Submitting bug reports:
"rtl8139-diag -mmmaaavvveefN" output
enable RTL8139_DEBUG below, and look at 'dmesg' or kernel log
*/
#define DRV_NAME "8139too"
#define DRV_VERSION "0.9.28"
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/compiler.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/completion.h>
#include <linux/crc32.h>
#include <linux/io.h>
#include <linux/uaccess.h>
#include <asm/irq.h>
#define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
#define PFX DRV_NAME ": "
/* Default Message level */
#define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
NETIF_MSG_PROBE | \
NETIF_MSG_LINK)
/* define to 1, 2 or 3 to enable copious debugging info */
#define RTL8139_DEBUG 0
/* define to 1 to disable lightweight runtime debugging checks */
#undef RTL8139_NDEBUG
#ifdef RTL8139_NDEBUG
# define assert(expr) do {} while (0)
#else
# define assert(expr) \
if(unlikely(!(expr))) { \
pr_err("Assertion failed! %s,%s,%s,line=%d\n", \
#expr, __FILE__, __func__, __LINE__); \
}
#endif
/* A few user-configurable values. */
/* media options */
#define MAX_UNITS 8
static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
/* Whether to use MMIO or PIO. Default to MMIO. */
#ifdef CONFIG_8139TOO_PIO
static int use_io = 1;
#else
static int use_io = 0;
#endif
/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
The RTL chips use a 64 element hash table based on the Ethernet CRC. */
static int multicast_filter_limit = 32;
/* bitmapped message enable number */
static int debug = -1;
/*
* Receive ring size
* Warning: 64K ring has hardware issues and may lock up.
*/
#if defined(CONFIG_SH_DREAMCAST)
#define RX_BUF_IDX 0 /* 8K ring */
#else
#define RX_BUF_IDX 2 /* 32K ring */
#endif
#define RX_BUF_LEN (8192 << RX_BUF_IDX)
#define RX_BUF_PAD 16
#define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */
#if RX_BUF_LEN == 65536
#define RX_BUF_TOT_LEN RX_BUF_LEN
#else
#define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD)
#endif
/* Number of Tx descriptor registers. */
#define NUM_TX_DESC 4
/* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
#define MAX_ETH_FRAME_SIZE 1536
/* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
#define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
#define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
/* PCI Tuning Parameters
Threshold is bytes transferred to chip before transmission starts. */
#define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
/* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
#define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */
#define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */
#define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
#define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */
/* Operational parameters that usually are not changed. */
/* Time in jiffies before concluding the transmitter is hung. */
#define TX_TIMEOUT (6*HZ)
enum {
HAS_MII_XCVR = 0x010000,
HAS_CHIP_XCVR = 0x020000,
HAS_LNK_CHNG = 0x040000,
};
#define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */
#define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */
#define RTL_MIN_IO_SIZE 0x80
#define RTL8139B_IO_SIZE 256
#define RTL8129_CAPS HAS_MII_XCVR
#define RTL8139_CAPS (HAS_CHIP_XCVR|HAS_LNK_CHNG)
typedef enum {
RTL8139 = 0,
RTL8129,
} board_t;
/* indexed by board_t, above */
static const struct {
const char *name;
u32 hw_flags;
} board_info[] __devinitdata = {
{ "RealTek RTL8139", RTL8139_CAPS },
{ "RealTek RTL8129", RTL8129_CAPS },
};
static struct pci_device_id rtl8139_pci_tbl[] = {
{0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
{0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
#ifdef CONFIG_SH_SECUREEDGE5410
/* Bogus 8139 silicon reports 8129 without external PROM :-( */
{0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
#endif
#ifdef CONFIG_8139TOO_8129
{0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8129 },
#endif
/* some crazy cards report invalid vendor ids like
* 0x0001 here. The other ids are valid and constant,
* so we simply don't match on the main vendor id.
*/
{PCI_ANY_ID, 0x8139, 0x10ec, 0x8139, 0, 0, RTL8139 },
{PCI_ANY_ID, 0x8139, 0x1186, 0x1300, 0, 0, RTL8139 },
{PCI_ANY_ID, 0x8139, 0x13d1, 0xab06, 0, 0, RTL8139 },
{0,}
};
MODULE_DEVICE_TABLE (pci, rtl8139_pci_tbl);
static struct {
const char str[ETH_GSTRING_LEN];
} ethtool_stats_keys[] = {
{ "early_rx" },
{ "tx_buf_mapped" },
{ "tx_timeouts" },
{ "rx_lost_in_ring" },
};
/* The rest of these values should never change. */
/* Symbolic offsets to registers. */
enum RTL8139_registers {
MAC0 = 0, /* Ethernet hardware address. */
MAR0 = 8, /* Multicast filter. */
TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */
TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
RxBuf = 0x30,
ChipCmd = 0x37,
RxBufPtr = 0x38,
RxBufAddr = 0x3A,
IntrMask = 0x3C,
IntrStatus = 0x3E,
TxConfig = 0x40,
RxConfig = 0x44,
Timer = 0x48, /* A general-purpose counter. */
RxMissed = 0x4C, /* 24 bits valid, write clears. */
Cfg9346 = 0x50,
Config0 = 0x51,
Config1 = 0x52,
TimerInt = 0x54,
MediaStatus = 0x58,
Config3 = 0x59,
Config4 = 0x5A, /* absent on RTL-8139A */
HltClk = 0x5B,
MultiIntr = 0x5C,
TxSummary = 0x60,
BasicModeCtrl = 0x62,
BasicModeStatus = 0x64,
NWayAdvert = 0x66,
NWayLPAR = 0x68,
NWayExpansion = 0x6A,
/* Undocumented registers, but required for proper operation. */
FIFOTMS = 0x70, /* FIFO Control and test. */
CSCR = 0x74, /* Chip Status and Configuration Register. */
PARA78 = 0x78,
FlashReg = 0xD4, /* Communication with Flash ROM, four bytes. */
PARA7c = 0x7c, /* Magic transceiver parameter register. */
Config5 = 0xD8, /* absent on RTL-8139A */
};
enum ClearBitMasks {
MultiIntrClear = 0xF000,
ChipCmdClear = 0xE2,
Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
};
enum ChipCmdBits {
CmdReset = 0x10,
CmdRxEnb = 0x08,
CmdTxEnb = 0x04,
RxBufEmpty = 0x01,
};
/* Interrupt register bits, using my own meaningful names. */
enum IntrStatusBits {
PCIErr = 0x8000,
PCSTimeout = 0x4000,
RxFIFOOver = 0x40,
RxUnderrun = 0x20,
RxOverflow = 0x10,
TxErr = 0x08,
TxOK = 0x04,
RxErr = 0x02,
RxOK = 0x01,
RxAckBits = RxFIFOOver | RxOverflow | RxOK,
};
enum TxStatusBits {
TxHostOwns = 0x2000,
TxUnderrun = 0x4000,
TxStatOK = 0x8000,
TxOutOfWindow = 0x20000000,
TxAborted = 0x40000000,
TxCarrierLost = 0x80000000,
};
enum RxStatusBits {
RxMulticast = 0x8000,
RxPhysical = 0x4000,
RxBroadcast = 0x2000,
RxBadSymbol = 0x0020,
RxRunt = 0x0010,
RxTooLong = 0x0008,
RxCRCErr = 0x0004,
RxBadAlign = 0x0002,
RxStatusOK = 0x0001,
};
/* Bits in RxConfig. */
enum rx_mode_bits {
AcceptErr = 0x20,
AcceptRunt = 0x10,
AcceptBroadcast = 0x08,
AcceptMulticast = 0x04,
AcceptMyPhys = 0x02,
AcceptAllPhys = 0x01,
};
/* Bits in TxConfig. */
enum tx_config_bits {
/* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */
TxIFGShift = 24,
TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */
TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */
TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */
TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */
TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
TxCRC = (1 << 16), /* DISABLE Tx pkt CRC append */
TxClearAbt = (1 << 0), /* Clear abort (WO) */
TxDMAShift = 8, /* DMA burst value (0-7) is shifted X many bits */
TxRetryShift = 4, /* TXRR value (0-15) is shifted X many bits */
TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
};
/* Bits in Config1 */
enum Config1Bits {
Cfg1_PM_Enable = 0x01,
Cfg1_VPD_Enable = 0x02,
Cfg1_PIO = 0x04,
Cfg1_MMIO = 0x08,
LWAKE = 0x10, /* not on 8139, 8139A */
Cfg1_Driver_Load = 0x20,
Cfg1_LED0 = 0x40,
Cfg1_LED1 = 0x80,
SLEEP = (1 << 1), /* only on 8139, 8139A */
PWRDN = (1 << 0), /* only on 8139, 8139A */
};
/* Bits in Config3 */
enum Config3Bits {
Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */
Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */
Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */
Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */
Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */
Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */
Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */
Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */
};
/* Bits in Config4 */
enum Config4Bits {
LWPTN = (1 << 2), /* not on 8139, 8139A */
};
/* Bits in Config5 */
enum Config5Bits {
Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */
Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */
Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */
Cfg5_FIFOAddrPtr= (1 << 3), /* Realtek internal SRAM testing */
Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */
Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */
Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */
};
enum RxConfigBits {
/* rx fifo threshold */
RxCfgFIFOShift = 13,
RxCfgFIFONone = (7 << RxCfgFIFOShift),
/* Max DMA burst */
RxCfgDMAShift = 8,
RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
/* rx ring buffer length */
RxCfgRcv8K = 0,
RxCfgRcv16K = (1 << 11),
RxCfgRcv32K = (1 << 12),
RxCfgRcv64K = (1 << 11) | (1 << 12),
/* Disable packet wrap at end of Rx buffer. (not possible with 64k) */
RxNoWrap = (1 << 7),
};
/* Twister tuning parameters from RealTek.
Completely undocumented, but required to tune bad links on some boards. */
enum CSCRBits {
CSCR_LinkOKBit = 0x0400,
CSCR_LinkChangeBit = 0x0800,
CSCR_LinkStatusBits = 0x0f000,
CSCR_LinkDownOffCmd = 0x003c0,
CSCR_LinkDownCmd = 0x0f3c0,
};
enum Cfg9346Bits {
Cfg9346_Lock = 0x00,
Cfg9346_Unlock = 0xC0,
};
typedef enum {
CH_8139 = 0,
CH_8139_K,
CH_8139A,
CH_8139A_G,
CH_8139B,
CH_8130,
CH_8139C,
CH_8100,
CH_8100B_8139D,
CH_8101,
} chip_t;
enum chip_flags {
HasHltClk = (1 << 0),
HasLWake = (1 << 1),
};
#define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \
(b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22)
#define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
/* directly indexed by chip_t, above */
static const struct {
const char *name;
u32 version; /* from RTL8139C/RTL8139D docs */
u32 flags;
} rtl_chip_info[] = {
{ "RTL-8139",
HW_REVID(1, 0, 0, 0, 0, 0, 0),
HasHltClk,
},
{ "RTL-8139 rev K",
HW_REVID(1, 1, 0, 0, 0, 0, 0),
HasHltClk,
},
{ "RTL-8139A",
HW_REVID(1, 1, 1, 0, 0, 0, 0),
HasHltClk, /* XXX undocumented? */
},
{ "RTL-8139A rev G",
HW_REVID(1, 1, 1, 0, 0, 1, 0),
HasHltClk, /* XXX undocumented? */
},
{ "RTL-8139B",
HW_REVID(1, 1, 1, 1, 0, 0, 0),
HasLWake,
},
{ "RTL-8130",
HW_REVID(1, 1, 1, 1, 1, 0, 0),
HasLWake,
},
{ "RTL-8139C",
HW_REVID(1, 1, 1, 0, 1, 0, 0),
HasLWake,
},
{ "RTL-8100",
HW_REVID(1, 1, 1, 1, 0, 1, 0),
HasLWake,
},
{ "RTL-8100B/8139D",
HW_REVID(1, 1, 1, 0, 1, 0, 1),
HasHltClk /* XXX undocumented? */
| HasLWake,
},
{ "RTL-8101",
HW_REVID(1, 1, 1, 0, 1, 1, 1),
HasLWake,
},
};
struct rtl_extra_stats {
unsigned long early_rx;
unsigned long tx_buf_mapped;
unsigned long tx_timeouts;
unsigned long rx_lost_in_ring;
};
struct rtl8139_private {
void __iomem *mmio_addr;
int drv_flags;
struct pci_dev *pci_dev;
u32 msg_enable;
struct napi_struct napi;
struct net_device *dev;
unsigned char *rx_ring;
unsigned int cur_rx; /* RX buf index of next pkt */
dma_addr_t rx_ring_dma;
unsigned int tx_flag;
unsigned long cur_tx;
unsigned long dirty_tx;
unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
unsigned char *tx_bufs; /* Tx bounce buffer region. */
dma_addr_t tx_bufs_dma;
signed char phys[4]; /* MII device addresses. */
/* Twister tune state. */
char twistie, twist_row, twist_col;
unsigned int watchdog_fired : 1;
unsigned int default_port : 4; /* Last dev->if_port value. */
unsigned int have_thread : 1;
spinlock_t lock;
spinlock_t rx_lock;
chip_t chipset;
u32 rx_config;
struct rtl_extra_stats xstats;
struct delayed_work thread;
struct mii_if_info mii;
unsigned int regs_len;
unsigned long fifo_copy_timeout;
};
MODULE_AUTHOR ("Jeff Garzik <[email protected]>");
MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
module_param(use_io, int, 0);
MODULE_PARM_DESC(use_io, "Force use of I/O access mode. 0=MMIO 1=PIO");
module_param(multicast_filter_limit, int, 0);
module_param_array(media, int, NULL, 0);
module_param_array(full_duplex, int, NULL, 0);
module_param(debug, int, 0);
MODULE_PARM_DESC (debug, "8139too bitmapped message enable number");
MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses");
MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps");
MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)");
static int read_eeprom (void __iomem *ioaddr, int location, int addr_len);
static int rtl8139_open (struct net_device *dev);
static int mdio_read (struct net_device *dev, int phy_id, int location);
static void mdio_write (struct net_device *dev, int phy_id, int location,
int val);
static void rtl8139_start_thread(struct rtl8139_private *tp);
static void rtl8139_tx_timeout (struct net_device *dev);
static void rtl8139_init_ring (struct net_device *dev);
static netdev_tx_t rtl8139_start_xmit (struct sk_buff *skb,
struct net_device *dev);
#ifdef CONFIG_NET_POLL_CONTROLLER
static void rtl8139_poll_controller(struct net_device *dev);
#endif
static int rtl8139_set_mac_address(struct net_device *dev, void *p);
static int rtl8139_poll(struct napi_struct *napi, int budget);
static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance);
static int rtl8139_close (struct net_device *dev);
static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
static struct net_device_stats *rtl8139_get_stats (struct net_device *dev);
static void rtl8139_set_rx_mode (struct net_device *dev);
static void __set_rx_mode (struct net_device *dev);
static void rtl8139_hw_start (struct net_device *dev);
static void rtl8139_thread (struct work_struct *work);
static void rtl8139_tx_timeout_task(struct work_struct *work);
static const struct ethtool_ops rtl8139_ethtool_ops;
/* write MMIO register, with flush */
/* Flush avoids rtl8139 bug w/ posted MMIO writes */
#define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0)
#define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0)
#define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0)
/* write MMIO register */
#define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg))
#define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg))
#define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg))
/* read MMIO register */
#define RTL_R8(reg) ioread8 (ioaddr + (reg))
#define RTL_R16(reg) ioread16 (ioaddr + (reg))
#define RTL_R32(reg) ((unsigned long) ioread32 (ioaddr + (reg)))
static const u16 rtl8139_intr_mask =
PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
TxErr | TxOK | RxErr | RxOK;
static const u16 rtl8139_norx_intr_mask =
PCIErr | PCSTimeout | RxUnderrun |
TxErr | TxOK | RxErr ;
#if RX_BUF_IDX == 0
static const unsigned int rtl8139_rx_config =
RxCfgRcv8K | RxNoWrap |
(RX_FIFO_THRESH << RxCfgFIFOShift) |
(RX_DMA_BURST << RxCfgDMAShift);
#elif RX_BUF_IDX == 1
static const unsigned int rtl8139_rx_config =
RxCfgRcv16K | RxNoWrap |
(RX_FIFO_THRESH << RxCfgFIFOShift) |
(RX_DMA_BURST << RxCfgDMAShift);
#elif RX_BUF_IDX == 2
static const unsigned int rtl8139_rx_config =
RxCfgRcv32K | RxNoWrap |
(RX_FIFO_THRESH << RxCfgFIFOShift) |
(RX_DMA_BURST << RxCfgDMAShift);
#elif RX_BUF_IDX == 3
static const unsigned int rtl8139_rx_config =
RxCfgRcv64K |
(RX_FIFO_THRESH << RxCfgFIFOShift) |
(RX_DMA_BURST << RxCfgDMAShift);
#else
#error "Invalid configuration for 8139_RXBUF_IDX"
#endif
static const unsigned int rtl8139_tx_config =
TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift);
static void __rtl8139_cleanup_dev (struct net_device *dev)
{
struct rtl8139_private *tp = netdev_priv(dev);
struct pci_dev *pdev;
assert (dev != NULL);
assert (tp->pci_dev != NULL);
pdev = tp->pci_dev;
if (tp->mmio_addr)
pci_iounmap (pdev, tp->mmio_addr);
/* it's ok to call this even if we have no regions to free */
pci_release_regions (pdev);
free_netdev(dev);
pci_set_drvdata (pdev, NULL);
}
static void rtl8139_chip_reset (void __iomem *ioaddr)
{
int i;
/* Soft reset the chip. */
RTL_W8 (ChipCmd, CmdReset);
/* Check that the chip has finished the reset. */
for (i = 1000; i > 0; i--) {
barrier();
if ((RTL_R8 (ChipCmd) & CmdReset) == 0)
break;
udelay (10);
}
}
static __devinit struct net_device * rtl8139_init_board (struct pci_dev *pdev)
{
void __iomem *ioaddr;
struct net_device *dev;
struct rtl8139_private *tp;
u8 tmp8;
int rc, disable_dev_on_err = 0;
unsigned int i;
unsigned long pio_start, pio_end, pio_flags, pio_len;
unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
u32 version;
assert (pdev != NULL);
/* dev and priv zeroed in alloc_etherdev */
dev = alloc_etherdev (sizeof (*tp));
if (dev == NULL) {
dev_err(&pdev->dev, "Unable to alloc new net device\n");
return ERR_PTR(-ENOMEM);
}
SET_NETDEV_DEV(dev, &pdev->dev);
tp = netdev_priv(dev);
tp->pci_dev = pdev;
/* enable device (incl. PCI PM wakeup and hotplug setup) */
rc = pci_enable_device (pdev);
if (rc)
goto err_out;
pio_start = pci_resource_start (pdev, 0);
pio_end = pci_resource_end (pdev, 0);
pio_flags = pci_resource_flags (pdev, 0);
pio_len = pci_resource_len (pdev, 0);
mmio_start = pci_resource_start (pdev, 1);
mmio_end = pci_resource_end (pdev, 1);
mmio_flags = pci_resource_flags (pdev, 1);
mmio_len = pci_resource_len (pdev, 1);
/* set this immediately, we need to know before
* we talk to the chip directly */
pr_debug("PIO region size == 0x%02lX\n", pio_len);
pr_debug("MMIO region size == 0x%02lX\n", mmio_len);
retry:
if (use_io) {
/* make sure PCI base addr 0 is PIO */
if (!(pio_flags & IORESOURCE_IO)) {
dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
rc = -ENODEV;
goto err_out;
}
/* check for weird/broken PCI region reporting */
if (pio_len < RTL_MIN_IO_SIZE) {
dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n");
rc = -ENODEV;
goto err_out;
}
} else {
/* make sure PCI base addr 1 is MMIO */
if (!(mmio_flags & IORESOURCE_MEM)) {
dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
rc = -ENODEV;
goto err_out;
}
if (mmio_len < RTL_MIN_IO_SIZE) {
dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n");
rc = -ENODEV;
goto err_out;
}
}
rc = pci_request_regions (pdev, DRV_NAME);
if (rc)
goto err_out;
disable_dev_on_err = 1;
/* enable PCI bus-mastering */
pci_set_master (pdev);
if (use_io) {
ioaddr = pci_iomap(pdev, 0, 0);
if (!ioaddr) {
dev_err(&pdev->dev, "cannot map PIO, aborting\n");
rc = -EIO;
goto err_out;
}
dev->base_addr = pio_start;
tp->regs_len = pio_len;
} else {
/* ioremap MMIO region */
ioaddr = pci_iomap(pdev, 1, 0);
if (ioaddr == NULL) {
dev_err(&pdev->dev, "cannot remap MMIO, trying PIO\n");
pci_release_regions(pdev);
use_io = 1;
goto retry;
}
dev->base_addr = (long) ioaddr;
tp->regs_len = mmio_len;
}
tp->mmio_addr = ioaddr;
/* Bring old chips out of low-power mode. */
RTL_W8 (HltClk, 'R');
/* check for missing/broken hardware */
if (RTL_R32 (TxConfig) == 0xFFFFFFFF) {
dev_err(&pdev->dev, "Chip not responding, ignoring board\n");
rc = -EIO;
goto err_out;
}
/* identify chip attached to board */
version = RTL_R32 (TxConfig) & HW_REVID_MASK;
for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++)
if (version == rtl_chip_info[i].version) {
tp->chipset = i;
goto match;
}
/* if unknown chip, assume array element #0, original RTL-8139 in this case */
dev_dbg(&pdev->dev, "unknown chip version, assuming RTL-8139\n");
dev_dbg(&pdev->dev, "TxConfig = 0x%lx\n", RTL_R32 (TxConfig));
tp->chipset = 0;
match:
pr_debug("chipset id (%d) == index %d, '%s'\n",
version, i, rtl_chip_info[i].name);
if (tp->chipset >= CH_8139B) {
u8 new_tmp8 = tmp8 = RTL_R8 (Config1);
pr_debug("PCI PM wakeup\n");
if ((rtl_chip_info[tp->chipset].flags & HasLWake) &&
(tmp8 & LWAKE))
new_tmp8 &= ~LWAKE;
new_tmp8 |= Cfg1_PM_Enable;
if (new_tmp8 != tmp8) {
RTL_W8 (Cfg9346, Cfg9346_Unlock);
RTL_W8 (Config1, tmp8);
RTL_W8 (Cfg9346, Cfg9346_Lock);
}
if (rtl_chip_info[tp->chipset].flags & HasLWake) {
tmp8 = RTL_R8 (Config4);
if (tmp8 & LWPTN) {
RTL_W8 (Cfg9346, Cfg9346_Unlock);
RTL_W8 (Config4, tmp8 & ~LWPTN);
RTL_W8 (Cfg9346, Cfg9346_Lock);
}
}
} else {
pr_debug("Old chip wakeup\n");
tmp8 = RTL_R8 (Config1);
tmp8 &= ~(SLEEP | PWRDN);
RTL_W8 (Config1, tmp8);
}
rtl8139_chip_reset (ioaddr);
return dev;
err_out:
__rtl8139_cleanup_dev (dev);
if (disable_dev_on_err)
pci_disable_device (pdev);
return ERR_PTR(rc);
}
static const struct net_device_ops rtl8139_netdev_ops = {
.ndo_open = rtl8139_open,
.ndo_stop = rtl8139_close,
.ndo_get_stats = rtl8139_get_stats,
.ndo_change_mtu = eth_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = rtl8139_set_mac_address,
.ndo_start_xmit = rtl8139_start_xmit,
.ndo_set_multicast_list = rtl8139_set_rx_mode,
.ndo_do_ioctl = netdev_ioctl,
.ndo_tx_timeout = rtl8139_tx_timeout,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = rtl8139_poll_controller,
#endif
};
static int __devinit rtl8139_init_one (struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct net_device *dev = NULL;
struct rtl8139_private *tp;
int i, addr_len, option;
void __iomem *ioaddr;
static int board_idx = -1;
assert (pdev != NULL);
assert (ent != NULL);
board_idx++;
/* when we're built into the kernel, the driver version message
* is only printed if at least one 8139 board has been found
*/
#ifndef MODULE
{
static int printed_version;
if (!printed_version++)
pr_info(RTL8139_DRIVER_NAME "\n");
}
#endif
if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) {
dev_info(&pdev->dev,
"This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip, use 8139cp\n",
pdev->vendor, pdev->device, pdev->revision);
return -ENODEV;
}
if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
pdev->device == PCI_DEVICE_ID_REALTEK_8139 &&
pdev->subsystem_vendor == PCI_VENDOR_ID_ATHEROS &&
pdev->subsystem_device == PCI_DEVICE_ID_REALTEK_8139) {
pr_info("8139too: OQO Model 2 detected. Forcing PIO\n");
use_io = 1;
}
dev = rtl8139_init_board (pdev);
if (IS_ERR(dev))
return PTR_ERR(dev);
assert (dev != NULL);
tp = netdev_priv(dev);
tp->dev = dev;
ioaddr = tp->mmio_addr;
assert (ioaddr != NULL);
addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
for (i = 0; i < 3; i++)
((__le16 *) (dev->dev_addr))[i] =
cpu_to_le16(read_eeprom (ioaddr, i + 7, addr_len));
memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
/* The Rtl8139-specific entries in the device structure. */
dev->netdev_ops = &rtl8139_netdev_ops;
dev->ethtool_ops = &rtl8139_ethtool_ops;
dev->watchdog_timeo = TX_TIMEOUT;
netif_napi_add(dev, &tp->napi, rtl8139_poll, 64);
/* note: the hardware is not capable of sg/csum/highdma, however
* through the use of skb_copy_and_csum_dev we enable these
* features
*/
dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
dev->irq = pdev->irq;
/* tp zeroed and aligned in alloc_etherdev */
tp = netdev_priv(dev);
/* note: tp->chipset set in rtl8139_init_board */
tp->drv_flags = board_info[ent->driver_data].hw_flags;
tp->mmio_addr = ioaddr;