forked from microsoft/WSL2-Linux-Kernel
-
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathacenic.c
3236 lines (2782 loc) · 85.8 KB
/
acenic.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
/*
* acenic.c: Linux driver for the Alteon AceNIC Gigabit Ethernet card
* and other Tigon based cards.
*
* Copyright 1998-2002 by Jes Sorensen, <jes@trained-monkey.org>.
*
* Thanks to Alteon and 3Com for providing hardware and documentation
* enabling me to write this driver.
*
* A mailing list for discussing the use of this driver has been
* setup, please subscribe to the lists if you have any questions
* about the driver. Send mail to linux-acenic-help@sunsite.auc.dk to
* see how to subscribe.
*
* 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 2 of the License, or
* (at your option) any later version.
*
* Additional credits:
* Pete Wyckoff <wyckoff@ca.sandia.gov>: Initial Linux/Alpha and trace
* dump support. The trace dump support has not been
* integrated yet however.
* Troy Benjegerdes: Big Endian (PPC) patches.
* Nate Stahl: Better out of memory handling and stats support.
* Aman Singla: Nasty race between interrupt handler and tx code dealing
* with 'testing the tx_ret_csm and setting tx_full'
* David S. Miller <davem@redhat.com>: conversion to new PCI dma mapping
* infrastructure and Sparc support
* Pierrick Pinasseau (CERN): For lending me an Ultra 5 to test the
* driver under Linux/Sparc64
* Matt Domsch <Matt_Domsch@dell.com>: Detect Alteon 1000baseT cards
* ETHTOOL_GDRVINFO support
* Chip Salzenberg <chip@valinux.com>: Fix race condition between tx
* handler and close() cleanup.
* Ken Aaker <kdaaker@rchland.vnet.ibm.com>: Correct check for whether
* memory mapped IO is enabled to
* make the driver work on RS/6000.
* Takayoshi Kouchi <kouchi@hpc.bs1.fc.nec.co.jp>: Identifying problem
* where the driver would disable
* bus master mode if it had to disable
* write and invalidate.
* Stephen Hack <stephen_hack@hp.com>: Fixed ace_set_mac_addr for little
* endian systems.
* Val Henson <vhenson@esscom.com>: Reset Jumbo skb producer and
* rx producer index when
* flushing the Jumbo ring.
* Hans Grobler <grobh@sun.ac.za>: Memory leak fixes in the
* driver init path.
* Grant Grundler <grundler@cup.hp.com>: PCI write posting fixes.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/version.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/mm.h>
#include <linux/highmem.h>
#include <linux/sockios.h>
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
#include <linux/if_vlan.h>
#endif
#ifdef SIOCETHTOOL
#include <linux/ethtool.h>
#endif
#include <net/sock.h>
#include <net/ip.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/byteorder.h>
#include <asm/uaccess.h>
#define DRV_NAME "acenic"
#undef INDEX_DEBUG
#ifdef CONFIG_ACENIC_OMIT_TIGON_I
#define ACE_IS_TIGON_I(ap) 0
#define ACE_TX_RING_ENTRIES(ap) MAX_TX_RING_ENTRIES
#else
#define ACE_IS_TIGON_I(ap) (ap->version == 1)
#define ACE_TX_RING_ENTRIES(ap) ap->tx_ring_entries
#endif
#ifndef PCI_VENDOR_ID_ALTEON
#define PCI_VENDOR_ID_ALTEON 0x12ae
#endif
#ifndef PCI_DEVICE_ID_ALTEON_ACENIC_FIBRE
#define PCI_DEVICE_ID_ALTEON_ACENIC_FIBRE 0x0001
#define PCI_DEVICE_ID_ALTEON_ACENIC_COPPER 0x0002
#endif
#ifndef PCI_DEVICE_ID_3COM_3C985
#define PCI_DEVICE_ID_3COM_3C985 0x0001
#endif
#ifndef PCI_VENDOR_ID_NETGEAR
#define PCI_VENDOR_ID_NETGEAR 0x1385
#define PCI_DEVICE_ID_NETGEAR_GA620 0x620a
#endif
#ifndef PCI_DEVICE_ID_NETGEAR_GA620T
#define PCI_DEVICE_ID_NETGEAR_GA620T 0x630a
#endif
/*
* Farallon used the DEC vendor ID by mistake and they seem not
* to care - stinky!
*/
#ifndef PCI_DEVICE_ID_FARALLON_PN9000SX
#define PCI_DEVICE_ID_FARALLON_PN9000SX 0x1a
#endif
#ifndef PCI_DEVICE_ID_FARALLON_PN9100T
#define PCI_DEVICE_ID_FARALLON_PN9100T 0xfa
#endif
#ifndef PCI_VENDOR_ID_SGI
#define PCI_VENDOR_ID_SGI 0x10a9
#endif
#ifndef PCI_DEVICE_ID_SGI_ACENIC
#define PCI_DEVICE_ID_SGI_ACENIC 0x0009
#endif
static struct pci_device_id acenic_pci_tbl[] = {
{ PCI_VENDOR_ID_ALTEON, PCI_DEVICE_ID_ALTEON_ACENIC_FIBRE,
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
{ PCI_VENDOR_ID_ALTEON, PCI_DEVICE_ID_ALTEON_ACENIC_COPPER,
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
{ PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C985,
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
{ PCI_VENDOR_ID_NETGEAR, PCI_DEVICE_ID_NETGEAR_GA620,
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
{ PCI_VENDOR_ID_NETGEAR, PCI_DEVICE_ID_NETGEAR_GA620T,
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
/*
* Farallon used the DEC vendor ID on their cards incorrectly,
* then later Alteon's ID.
*/
{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_FARALLON_PN9000SX,
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
{ PCI_VENDOR_ID_ALTEON, PCI_DEVICE_ID_FARALLON_PN9100T,
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
{ PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_ACENIC,
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, },
{ }
};
MODULE_DEVICE_TABLE(pci, acenic_pci_tbl);
#define ace_sync_irq(irq) synchronize_irq(irq)
#ifndef offset_in_page
#define offset_in_page(ptr) ((unsigned long)(ptr) & ~PAGE_MASK)
#endif
#define ACE_MAX_MOD_PARMS 8
#define BOARD_IDX_STATIC 0
#define BOARD_IDX_OVERFLOW -1
#if (defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)) && \
defined(NETIF_F_HW_VLAN_RX)
#define ACENIC_DO_VLAN 1
#define ACE_RCB_VLAN_FLAG RCB_FLG_VLAN_ASSIST
#else
#define ACENIC_DO_VLAN 0
#define ACE_RCB_VLAN_FLAG 0
#endif
#include "acenic.h"
/*
* These must be defined before the firmware is included.
*/
#define MAX_TEXT_LEN 96*1024
#define MAX_RODATA_LEN 8*1024
#define MAX_DATA_LEN 2*1024
#include "acenic_firmware.h"
#ifndef tigon2FwReleaseLocal
#define tigon2FwReleaseLocal 0
#endif
/*
* This driver currently supports Tigon I and Tigon II based cards
* including the Alteon AceNIC, the 3Com 3C985[B] and NetGear
* GA620. The driver should also work on the SGI, DEC and Farallon
* versions of the card, however I have not been able to test that
* myself.
*
* This card is really neat, it supports receive hardware checksumming
* and jumbo frames (up to 9000 bytes) and does a lot of work in the
* firmware. Also the programming interface is quite neat, except for
* the parts dealing with the i2c eeprom on the card ;-)
*
* Using jumbo frames:
*
* To enable jumbo frames, simply specify an mtu between 1500 and 9000
* bytes to ifconfig. Jumbo frames can be enabled or disabled at any time
* by running `ifconfig eth<X> mtu <MTU>' with <X> being the Ethernet
* interface number and <MTU> being the MTU value.
*
* Module parameters:
*
* When compiled as a loadable module, the driver allows for a number
* of module parameters to be specified. The driver supports the
* following module parameters:
*
* trace=<val> - Firmware trace level. This requires special traced
* firmware to replace the firmware supplied with
* the driver - for debugging purposes only.
*
* link=<val> - Link state. Normally you want to use the default link
* parameters set by the driver. This can be used to
* override these in case your switch doesn't negotiate
* the link properly. Valid values are:
* 0x0001 - Force half duplex link.
* 0x0002 - Do not negotiate line speed with the other end.
* 0x0010 - 10Mbit/sec link.
* 0x0020 - 100Mbit/sec link.
* 0x0040 - 1000Mbit/sec link.
* 0x0100 - Do not negotiate flow control.
* 0x0200 - Enable RX flow control Y
* 0x0400 - Enable TX flow control Y (Tigon II NICs only).
* Default value is 0x0270, ie. enable link+flow
* control negotiation. Negotiating the highest
* possible link speed with RX flow control enabled.
*
* When disabling link speed negotiation, only one link
* speed is allowed to be specified!
*
* tx_coal_tick=<val> - number of coalescing clock ticks (us) allowed
* to wait for more packets to arive before
* interrupting the host, from the time the first
* packet arrives.
*
* rx_coal_tick=<val> - number of coalescing clock ticks (us) allowed
* to wait for more packets to arive in the transmit ring,
* before interrupting the host, after transmitting the
* first packet in the ring.
*
* max_tx_desc=<val> - maximum number of transmit descriptors
* (packets) transmitted before interrupting the host.
*
* max_rx_desc=<val> - maximum number of receive descriptors
* (packets) received before interrupting the host.
*
* tx_ratio=<val> - 7 bit value (0 - 63) specifying the split in 64th
* increments of the NIC's on board memory to be used for
* transmit and receive buffers. For the 1MB NIC app. 800KB
* is available, on the 1/2MB NIC app. 300KB is available.
* 68KB will always be available as a minimum for both
* directions. The default value is a 50/50 split.
* dis_pci_mem_inval=<val> - disable PCI memory write and invalidate
* operations, default (1) is to always disable this as
* that is what Alteon does on NT. I have not been able
* to measure any real performance differences with
* this on my systems. Set <val>=0 if you want to
* enable these operations.
*
* If you use more than one NIC, specify the parameters for the
* individual NICs with a comma, ie. trace=0,0x00001fff,0 you want to
* run tracing on NIC #2 but not on NIC #1 and #3.
*
* TODO:
*
* - Proper multicast support.
* - NIC dump support.
* - More tuning parameters.
*
* The mini ring is not used under Linux and I am not sure it makes sense
* to actually use it.
*
* New interrupt handler strategy:
*
* The old interrupt handler worked using the traditional method of
* replacing an skbuff with a new one when a packet arrives. However
* the rx rings do not need to contain a static number of buffer
* descriptors, thus it makes sense to move the memory allocation out
* of the main interrupt handler and do it in a bottom half handler
* and only allocate new buffers when the number of buffers in the
* ring is below a certain threshold. In order to avoid starving the
* NIC under heavy load it is however necessary to force allocation
* when hitting a minimum threshold. The strategy for alloction is as
* follows:
*
* RX_LOW_BUF_THRES - allocate buffers in the bottom half
* RX_PANIC_LOW_THRES - we are very low on buffers, allocate
* the buffers in the interrupt handler
* RX_RING_THRES - maximum number of buffers in the rx ring
* RX_MINI_THRES - maximum number of buffers in the mini ring
* RX_JUMBO_THRES - maximum number of buffers in the jumbo ring
*
* One advantagous side effect of this allocation approach is that the
* entire rx processing can be done without holding any spin lock
* since the rx rings and registers are totally independent of the tx
* ring and its registers. This of course includes the kmalloc's of
* new skb's. Thus start_xmit can run in parallel with rx processing
* and the memory allocation on SMP systems.
*
* Note that running the skb reallocation in a bottom half opens up
* another can of races which needs to be handled properly. In
* particular it can happen that the interrupt handler tries to run
* the reallocation while the bottom half is either running on another
* CPU or was interrupted on the same CPU. To get around this the
* driver uses bitops to prevent the reallocation routines from being
* reentered.
*
* TX handling can also be done without holding any spin lock, wheee
* this is fun! since tx_ret_csm is only written to by the interrupt
* handler. The case to be aware of is when shutting down the device
* and cleaning up where it is necessary to make sure that
* start_xmit() is not running while this is happening. Well DaveM
* informs me that this case is already protected against ... bye bye
* Mr. Spin Lock, it was nice to know you.
*
* TX interrupts are now partly disabled so the NIC will only generate
* TX interrupts for the number of coal ticks, not for the number of
* TX packets in the queue. This should reduce the number of TX only,
* ie. when no RX processing is done, interrupts seen.
*/
/*
* Threshold values for RX buffer allocation - the low water marks for
* when to start refilling the rings are set to 75% of the ring
* sizes. It seems to make sense to refill the rings entirely from the
* intrrupt handler once it gets below the panic threshold, that way
* we don't risk that the refilling is moved to another CPU when the
* one running the interrupt handler just got the slab code hot in its
* cache.
*/
#define RX_RING_SIZE 72
#define RX_MINI_SIZE 64
#define RX_JUMBO_SIZE 48
#define RX_PANIC_STD_THRES 16
#define RX_PANIC_STD_REFILL (3*RX_PANIC_STD_THRES)/2
#define RX_LOW_STD_THRES (3*RX_RING_SIZE)/4
#define RX_PANIC_MINI_THRES 12
#define RX_PANIC_MINI_REFILL (3*RX_PANIC_MINI_THRES)/2
#define RX_LOW_MINI_THRES (3*RX_MINI_SIZE)/4
#define RX_PANIC_JUMBO_THRES 6
#define RX_PANIC_JUMBO_REFILL (3*RX_PANIC_JUMBO_THRES)/2
#define RX_LOW_JUMBO_THRES (3*RX_JUMBO_SIZE)/4
/*
* Size of the mini ring entries, basically these just should be big
* enough to take TCP ACKs
*/
#define ACE_MINI_SIZE 100
#define ACE_MINI_BUFSIZE ACE_MINI_SIZE
#define ACE_STD_BUFSIZE (ACE_STD_MTU + ETH_HLEN + 4)
#define ACE_JUMBO_BUFSIZE (ACE_JUMBO_MTU + ETH_HLEN + 4)
/*
* There seems to be a magic difference in the effect between 995 and 996
* but little difference between 900 and 995 ... no idea why.
*
* There is now a default set of tuning parameters which is set, depending
* on whether or not the user enables Jumbo frames. It's assumed that if
* Jumbo frames are enabled, the user wants optimal tuning for that case.
*/
#define DEF_TX_COAL 400 /* 996 */
#define DEF_TX_MAX_DESC 60 /* was 40 */
#define DEF_RX_COAL 120 /* 1000 */
#define DEF_RX_MAX_DESC 25
#define DEF_TX_RATIO 21 /* 24 */
#define DEF_JUMBO_TX_COAL 20
#define DEF_JUMBO_TX_MAX_DESC 60
#define DEF_JUMBO_RX_COAL 30
#define DEF_JUMBO_RX_MAX_DESC 6
#define DEF_JUMBO_TX_RATIO 21
#if tigon2FwReleaseLocal < 20001118
/*
* Standard firmware and early modifications duplicate
* IRQ load without this flag (coal timer is never reset).
* Note that with this flag tx_coal should be less than
* time to xmit full tx ring.
* 400usec is not so bad for tx ring size of 128.
*/
#define TX_COAL_INTS_ONLY 1 /* worth it */
#else
/*
* With modified firmware, this is not necessary, but still useful.
*/
#define TX_COAL_INTS_ONLY 1
#endif
#define DEF_TRACE 0
#define DEF_STAT (2 * TICKS_PER_SEC)
static int link[ACE_MAX_MOD_PARMS];
static int trace[ACE_MAX_MOD_PARMS];
static int tx_coal_tick[ACE_MAX_MOD_PARMS];
static int rx_coal_tick[ACE_MAX_MOD_PARMS];
static int max_tx_desc[ACE_MAX_MOD_PARMS];
static int max_rx_desc[ACE_MAX_MOD_PARMS];
static int tx_ratio[ACE_MAX_MOD_PARMS];
static int dis_pci_mem_inval[ACE_MAX_MOD_PARMS] = {1, 1, 1, 1, 1, 1, 1, 1};
MODULE_AUTHOR("Jes Sorensen <jes@trained-monkey.org>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("AceNIC/3C985/GA620 Gigabit Ethernet driver");
module_param_array(link, int, NULL, 0);
module_param_array(trace, int, NULL, 0);
module_param_array(tx_coal_tick, int, NULL, 0);
module_param_array(max_tx_desc, int, NULL, 0);
module_param_array(rx_coal_tick, int, NULL, 0);
module_param_array(max_rx_desc, int, NULL, 0);
module_param_array(tx_ratio, int, NULL, 0);
MODULE_PARM_DESC(link, "AceNIC/3C985/NetGear link state");
MODULE_PARM_DESC(trace, "AceNIC/3C985/NetGear firmware trace level");
MODULE_PARM_DESC(tx_coal_tick, "AceNIC/3C985/GA620 max clock ticks to wait from first tx descriptor arrives");
MODULE_PARM_DESC(max_tx_desc, "AceNIC/3C985/GA620 max number of transmit descriptors to wait");
MODULE_PARM_DESC(rx_coal_tick, "AceNIC/3C985/GA620 max clock ticks to wait from first rx descriptor arrives");
MODULE_PARM_DESC(max_rx_desc, "AceNIC/3C985/GA620 max number of receive descriptors to wait");
MODULE_PARM_DESC(tx_ratio, "AceNIC/3C985/GA620 ratio of NIC memory used for TX/RX descriptors (range 0-63)");
static char version[] __devinitdata =
"acenic.c: v0.92 08/05/2002 Jes Sorensen, linux-acenic@SunSITE.dk\n"
" http://home.cern.ch/~jes/gige/acenic.html\n";
static int ace_get_settings(struct net_device *, struct ethtool_cmd *);
static int ace_set_settings(struct net_device *, struct ethtool_cmd *);
static void ace_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
static const struct ethtool_ops ace_ethtool_ops = {
.get_settings = ace_get_settings,
.set_settings = ace_set_settings,
.get_drvinfo = ace_get_drvinfo,
};
static void ace_watchdog(struct net_device *dev);
static int __devinit acenic_probe_one(struct pci_dev *pdev,
const struct pci_device_id *id)
{
struct net_device *dev;
struct ace_private *ap;
static int boards_found;
dev = alloc_etherdev(sizeof(struct ace_private));
if (dev == NULL) {
printk(KERN_ERR "acenic: Unable to allocate "
"net_device structure!\n");
return -ENOMEM;
}
SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &pdev->dev);
ap = dev->priv;
ap->pdev = pdev;
ap->name = pci_name(pdev);
dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
#if ACENIC_DO_VLAN
dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
dev->vlan_rx_register = ace_vlan_rx_register;
#endif
dev->tx_timeout = &ace_watchdog;
dev->watchdog_timeo = 5*HZ;
dev->open = &ace_open;
dev->stop = &ace_close;
dev->hard_start_xmit = &ace_start_xmit;
dev->get_stats = &ace_get_stats;
dev->set_multicast_list = &ace_set_multicast_list;
SET_ETHTOOL_OPS(dev, &ace_ethtool_ops);
dev->set_mac_address = &ace_set_mac_addr;
dev->change_mtu = &ace_change_mtu;
/* we only display this string ONCE */
if (!boards_found)
printk(version);
if (pci_enable_device(pdev))
goto fail_free_netdev;
/*
* Enable master mode before we start playing with the
* pci_command word since pci_set_master() will modify
* it.
*/
pci_set_master(pdev);
pci_read_config_word(pdev, PCI_COMMAND, &ap->pci_command);
/* OpenFirmware on Mac's does not set this - DOH.. */
if (!(ap->pci_command & PCI_COMMAND_MEMORY)) {
printk(KERN_INFO "%s: Enabling PCI Memory Mapped "
"access - was not enabled by BIOS/Firmware\n",
ap->name);
ap->pci_command = ap->pci_command | PCI_COMMAND_MEMORY;
pci_write_config_word(ap->pdev, PCI_COMMAND,
ap->pci_command);
wmb();
}
pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &ap->pci_latency);
if (ap->pci_latency <= 0x40) {
ap->pci_latency = 0x40;
pci_write_config_byte(pdev, PCI_LATENCY_TIMER, ap->pci_latency);
}
/*
* Remap the regs into kernel space - this is abuse of
* dev->base_addr since it was means for I/O port
* addresses but who gives a damn.
*/
dev->base_addr = pci_resource_start(pdev, 0);
ap->regs = ioremap(dev->base_addr, 0x4000);
if (!ap->regs) {
printk(KERN_ERR "%s: Unable to map I/O register, "
"AceNIC %i will be disabled.\n",
ap->name, boards_found);
goto fail_free_netdev;
}
switch(pdev->vendor) {
case PCI_VENDOR_ID_ALTEON:
if (pdev->device == PCI_DEVICE_ID_FARALLON_PN9100T) {
printk(KERN_INFO "%s: Farallon PN9100-T ",
ap->name);
} else {
printk(KERN_INFO "%s: Alteon AceNIC ",
ap->name);
}
break;
case PCI_VENDOR_ID_3COM:
printk(KERN_INFO "%s: 3Com 3C985 ", ap->name);
break;
case PCI_VENDOR_ID_NETGEAR:
printk(KERN_INFO "%s: NetGear GA620 ", ap->name);
break;
case PCI_VENDOR_ID_DEC:
if (pdev->device == PCI_DEVICE_ID_FARALLON_PN9000SX) {
printk(KERN_INFO "%s: Farallon PN9000-SX ",
ap->name);
break;
}
case PCI_VENDOR_ID_SGI:
printk(KERN_INFO "%s: SGI AceNIC ", ap->name);
break;
default:
printk(KERN_INFO "%s: Unknown AceNIC ", ap->name);
break;
}
printk("Gigabit Ethernet at 0x%08lx, ", dev->base_addr);
printk("irq %d\n", pdev->irq);
#ifdef CONFIG_ACENIC_OMIT_TIGON_I
if ((readl(&ap->regs->HostCtrl) >> 28) == 4) {
printk(KERN_ERR "%s: Driver compiled without Tigon I"
" support - NIC disabled\n", dev->name);
goto fail_uninit;
}
#endif
if (ace_allocate_descriptors(dev))
goto fail_free_netdev;
#ifdef MODULE
if (boards_found >= ACE_MAX_MOD_PARMS)
ap->board_idx = BOARD_IDX_OVERFLOW;
else
ap->board_idx = boards_found;
#else
ap->board_idx = BOARD_IDX_STATIC;
#endif
if (ace_init(dev))
goto fail_free_netdev;
if (register_netdev(dev)) {
printk(KERN_ERR "acenic: device registration failed\n");
goto fail_uninit;
}
ap->name = dev->name;
if (ap->pci_using_dac)
dev->features |= NETIF_F_HIGHDMA;
pci_set_drvdata(pdev, dev);
boards_found++;
return 0;
fail_uninit:
ace_init_cleanup(dev);
fail_free_netdev:
free_netdev(dev);
return -ENODEV;
}
static void __devexit acenic_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct ace_private *ap = netdev_priv(dev);
struct ace_regs __iomem *regs = ap->regs;
short i;
unregister_netdev(dev);
writel(readl(®s->CpuCtrl) | CPU_HALT, ®s->CpuCtrl);
if (ap->version >= 2)
writel(readl(®s->CpuBCtrl) | CPU_HALT, ®s->CpuBCtrl);
/*
* This clears any pending interrupts
*/
writel(1, ®s->Mb0Lo);
readl(®s->CpuCtrl); /* flush */
/*
* Make sure no other CPUs are processing interrupts
* on the card before the buffers are being released.
* Otherwise one might experience some `interesting'
* effects.
*
* Then release the RX buffers - jumbo buffers were
* already released in ace_close().
*/
ace_sync_irq(dev->irq);
for (i = 0; i < RX_STD_RING_ENTRIES; i++) {
struct sk_buff *skb = ap->skb->rx_std_skbuff[i].skb;
if (skb) {
struct ring_info *ringp;
dma_addr_t mapping;
ringp = &ap->skb->rx_std_skbuff[i];
mapping = pci_unmap_addr(ringp, mapping);
pci_unmap_page(ap->pdev, mapping,
ACE_STD_BUFSIZE,
PCI_DMA_FROMDEVICE);
ap->rx_std_ring[i].size = 0;
ap->skb->rx_std_skbuff[i].skb = NULL;
dev_kfree_skb(skb);
}
}
if (ap->version >= 2) {
for (i = 0; i < RX_MINI_RING_ENTRIES; i++) {
struct sk_buff *skb = ap->skb->rx_mini_skbuff[i].skb;
if (skb) {
struct ring_info *ringp;
dma_addr_t mapping;
ringp = &ap->skb->rx_mini_skbuff[i];
mapping = pci_unmap_addr(ringp,mapping);
pci_unmap_page(ap->pdev, mapping,
ACE_MINI_BUFSIZE,
PCI_DMA_FROMDEVICE);
ap->rx_mini_ring[i].size = 0;
ap->skb->rx_mini_skbuff[i].skb = NULL;
dev_kfree_skb(skb);
}
}
}
for (i = 0; i < RX_JUMBO_RING_ENTRIES; i++) {
struct sk_buff *skb = ap->skb->rx_jumbo_skbuff[i].skb;
if (skb) {
struct ring_info *ringp;
dma_addr_t mapping;
ringp = &ap->skb->rx_jumbo_skbuff[i];
mapping = pci_unmap_addr(ringp, mapping);
pci_unmap_page(ap->pdev, mapping,
ACE_JUMBO_BUFSIZE,
PCI_DMA_FROMDEVICE);
ap->rx_jumbo_ring[i].size = 0;
ap->skb->rx_jumbo_skbuff[i].skb = NULL;
dev_kfree_skb(skb);
}
}
ace_init_cleanup(dev);
free_netdev(dev);
}
static struct pci_driver acenic_pci_driver = {
.name = "acenic",
.id_table = acenic_pci_tbl,
.probe = acenic_probe_one,
.remove = __devexit_p(acenic_remove_one),
};
static int __init acenic_init(void)
{
return pci_register_driver(&acenic_pci_driver);
}
static void __exit acenic_exit(void)
{
pci_unregister_driver(&acenic_pci_driver);
}
module_init(acenic_init);
module_exit(acenic_exit);
static void ace_free_descriptors(struct net_device *dev)
{
struct ace_private *ap = netdev_priv(dev);
int size;
if (ap->rx_std_ring != NULL) {
size = (sizeof(struct rx_desc) *
(RX_STD_RING_ENTRIES +
RX_JUMBO_RING_ENTRIES +
RX_MINI_RING_ENTRIES +
RX_RETURN_RING_ENTRIES));
pci_free_consistent(ap->pdev, size, ap->rx_std_ring,
ap->rx_ring_base_dma);
ap->rx_std_ring = NULL;
ap->rx_jumbo_ring = NULL;
ap->rx_mini_ring = NULL;
ap->rx_return_ring = NULL;
}
if (ap->evt_ring != NULL) {
size = (sizeof(struct event) * EVT_RING_ENTRIES);
pci_free_consistent(ap->pdev, size, ap->evt_ring,
ap->evt_ring_dma);
ap->evt_ring = NULL;
}
if (ap->tx_ring != NULL && !ACE_IS_TIGON_I(ap)) {
size = (sizeof(struct tx_desc) * MAX_TX_RING_ENTRIES);
pci_free_consistent(ap->pdev, size, ap->tx_ring,
ap->tx_ring_dma);
}
ap->tx_ring = NULL;
if (ap->evt_prd != NULL) {
pci_free_consistent(ap->pdev, sizeof(u32),
(void *)ap->evt_prd, ap->evt_prd_dma);
ap->evt_prd = NULL;
}
if (ap->rx_ret_prd != NULL) {
pci_free_consistent(ap->pdev, sizeof(u32),
(void *)ap->rx_ret_prd,
ap->rx_ret_prd_dma);
ap->rx_ret_prd = NULL;
}
if (ap->tx_csm != NULL) {
pci_free_consistent(ap->pdev, sizeof(u32),
(void *)ap->tx_csm, ap->tx_csm_dma);
ap->tx_csm = NULL;
}
}
static int ace_allocate_descriptors(struct net_device *dev)
{
struct ace_private *ap = netdev_priv(dev);
int size;
size = (sizeof(struct rx_desc) *
(RX_STD_RING_ENTRIES +
RX_JUMBO_RING_ENTRIES +
RX_MINI_RING_ENTRIES +
RX_RETURN_RING_ENTRIES));
ap->rx_std_ring = pci_alloc_consistent(ap->pdev, size,
&ap->rx_ring_base_dma);
if (ap->rx_std_ring == NULL)
goto fail;
ap->rx_jumbo_ring = ap->rx_std_ring + RX_STD_RING_ENTRIES;
ap->rx_mini_ring = ap->rx_jumbo_ring + RX_JUMBO_RING_ENTRIES;
ap->rx_return_ring = ap->rx_mini_ring + RX_MINI_RING_ENTRIES;
size = (sizeof(struct event) * EVT_RING_ENTRIES);
ap->evt_ring = pci_alloc_consistent(ap->pdev, size, &ap->evt_ring_dma);
if (ap->evt_ring == NULL)
goto fail;
/*
* Only allocate a host TX ring for the Tigon II, the Tigon I
* has to use PCI registers for this ;-(
*/
if (!ACE_IS_TIGON_I(ap)) {
size = (sizeof(struct tx_desc) * MAX_TX_RING_ENTRIES);
ap->tx_ring = pci_alloc_consistent(ap->pdev, size,
&ap->tx_ring_dma);
if (ap->tx_ring == NULL)
goto fail;
}
ap->evt_prd = pci_alloc_consistent(ap->pdev, sizeof(u32),
&ap->evt_prd_dma);
if (ap->evt_prd == NULL)
goto fail;
ap->rx_ret_prd = pci_alloc_consistent(ap->pdev, sizeof(u32),
&ap->rx_ret_prd_dma);
if (ap->rx_ret_prd == NULL)
goto fail;
ap->tx_csm = pci_alloc_consistent(ap->pdev, sizeof(u32),
&ap->tx_csm_dma);
if (ap->tx_csm == NULL)
goto fail;
return 0;
fail:
/* Clean up. */
ace_init_cleanup(dev);
return 1;
}
/*
* Generic cleanup handling data allocated during init. Used when the
* module is unloaded or if an error occurs during initialization
*/
static void ace_init_cleanup(struct net_device *dev)
{
struct ace_private *ap;
ap = netdev_priv(dev);
ace_free_descriptors(dev);
if (ap->info)
pci_free_consistent(ap->pdev, sizeof(struct ace_info),
ap->info, ap->info_dma);
kfree(ap->skb);
kfree(ap->trace_buf);
if (dev->irq)
free_irq(dev->irq, dev);
iounmap(ap->regs);
}
/*
* Commands are considered to be slow.
*/
static inline void ace_issue_cmd(struct ace_regs __iomem *regs, struct cmd *cmd)
{
u32 idx;
idx = readl(®s->CmdPrd);
writel(*(u32 *)(cmd), ®s->CmdRng[idx]);
idx = (idx + 1) % CMD_RING_ENTRIES;
writel(idx, ®s->CmdPrd);
}
static int __devinit ace_init(struct net_device *dev)
{
struct ace_private *ap;
struct ace_regs __iomem *regs;
struct ace_info *info = NULL;
struct pci_dev *pdev;
unsigned long myjif;
u64 tmp_ptr;
u32 tig_ver, mac1, mac2, tmp, pci_state;
int board_idx, ecode = 0;
short i;
unsigned char cache_size;
ap = netdev_priv(dev);
regs = ap->regs;
board_idx = ap->board_idx;
/*
* aman@sgi.com - its useful to do a NIC reset here to
* address the `Firmware not running' problem subsequent
* to any crashes involving the NIC
*/
writel(HW_RESET | (HW_RESET << 24), ®s->HostCtrl);
readl(®s->HostCtrl); /* PCI write posting */
udelay(5);
/*
* Don't access any other registers before this point!
*/
#ifdef __BIG_ENDIAN
/*
* This will most likely need BYTE_SWAP once we switch
* to using __raw_writel()
*/
writel((WORD_SWAP | CLR_INT | ((WORD_SWAP | CLR_INT) << 24)),
®s->HostCtrl);
#else
writel((CLR_INT | WORD_SWAP | ((CLR_INT | WORD_SWAP) << 24)),
®s->HostCtrl);
#endif
readl(®s->HostCtrl); /* PCI write posting */
/*
* Stop the NIC CPU and clear pending interrupts
*/
writel(readl(®s->CpuCtrl) | CPU_HALT, ®s->CpuCtrl);
readl(®s->CpuCtrl); /* PCI write posting */
writel(0, ®s->Mb0Lo);
tig_ver = readl(®s->HostCtrl) >> 28;
switch(tig_ver){
#ifndef CONFIG_ACENIC_OMIT_TIGON_I
case 4:
case 5:
printk(KERN_INFO " Tigon I (Rev. %i), Firmware: %i.%i.%i, ",
tig_ver, tigonFwReleaseMajor, tigonFwReleaseMinor,
tigonFwReleaseFix);
writel(0, ®s->LocalCtrl);
ap->version = 1;
ap->tx_ring_entries = TIGON_I_TX_RING_ENTRIES;
break;
#endif
case 6:
printk(KERN_INFO " Tigon II (Rev. %i), Firmware: %i.%i.%i, ",
tig_ver, tigon2FwReleaseMajor, tigon2FwReleaseMinor,
tigon2FwReleaseFix);
writel(readl(®s->CpuBCtrl) | CPU_HALT, ®s->CpuBCtrl);
readl(®s->CpuBCtrl); /* PCI write posting */
/*
* The SRAM bank size does _not_ indicate the amount
* of memory on the card, it controls the _bank_ size!
* Ie. a 1MB AceNIC will have two banks of 512KB.
*/
writel(SRAM_BANK_512K, ®s->LocalCtrl);
writel(SYNC_SRAM_TIMING, ®s->MiscCfg);
ap->version = 2;
ap->tx_ring_entries = MAX_TX_RING_ENTRIES;
break;
default:
printk(KERN_WARNING " Unsupported Tigon version detected "
"(%i)\n", tig_ver);
ecode = -ENODEV;
goto init_error;
}
/*
* ModeStat _must_ be set after the SRAM settings as this change
* seems to corrupt the ModeStat and possible other registers.
* The SRAM settings survive resets and setting it to the same
* value a second time works as well. This is what caused the
* `Firmware not running' problem on the Tigon II.
*/
#ifdef __BIG_ENDIAN
writel(ACE_BYTE_SWAP_DMA | ACE_WARN | ACE_FATAL | ACE_BYTE_SWAP_BD |
ACE_WORD_SWAP_BD | ACE_NO_JUMBO_FRAG, ®s->ModeStat);
#else
writel(ACE_BYTE_SWAP_DMA | ACE_WARN | ACE_FATAL |
ACE_WORD_SWAP_BD | ACE_NO_JUMBO_FRAG, ®s->ModeStat);
#endif
readl(®s->ModeStat); /* PCI write posting */
mac1 = 0;
for(i = 0; i < 4; i++) {
int tmp;
mac1 = mac1 << 8;
tmp = read_eeprom_byte(dev, 0x8c+i);
if (tmp < 0) {
ecode = -EIO;
goto init_error;
} else
mac1 |= (tmp & 0xff);
}
mac2 = 0;