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[net-next-2.6.git] / drivers / net / pcmcia / nmclan_cs.c
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1da177e4
LT		 1/* ----------------------------------------------------------------------------
2Linux PCMCIA ethernet adapter driver for the New Media Ethernet LAN.
3 nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao
4
5 The Ethernet LAN uses the Advanced Micro Devices (AMD) Am79C940 Media
6 Access Controller for Ethernet (MACE). It is essentially the Am2150
7 PCMCIA Ethernet card contained in the Am2150 Demo Kit.
8
9Written by Roger C. Pao <rpao@paonet.org>
10 Copyright 1995 Roger C. Pao
11 Linux 2.5 cleanups Copyright Red Hat 2003
12
13 This software may be used and distributed according to the terms of
14 the GNU General Public License.
15
16Ported to Linux 1.3.* network driver environment by
17 Matti Aarnio <mea@utu.fi>
18
19References
20
21 Am2150 Technical Reference Manual, Revision 1.0, August 17, 1993
22 Am79C940 (MACE) Data Sheet, 1994
23 Am79C90 (C-LANCE) Data Sheet, 1994
24 Linux PCMCIA Programmer's Guide v1.17
25 /usr/src/linux/net/inet/dev.c, Linux kernel 1.2.8
26
27 Eric Mears, New Media Corporation
28 Tom Pollard, New Media Corporation
29 Dean Siasoyco, New Media Corporation
30 Ken Lesniak, Silicon Graphics, Inc. <lesniak@boston.sgi.com>
31 Donald Becker <becker@scyld.com>
32 David Hinds <dahinds@users.sourceforge.net>
33
34 The Linux client driver is based on the 3c589_cs.c client driver by
35 David Hinds.
36
37 The Linux network driver outline is based on the 3c589_cs.c driver,
38 the 8390.c driver, and the example skeleton.c kernel code, which are
39 by Donald Becker.
40
41 The Am2150 network driver hardware interface code is based on the
42 OS/9000 driver for the New Media Ethernet LAN by Eric Mears.
43
44 Special thanks for testing and help in debugging this driver goes
45 to Ken Lesniak.
46
47-------------------------------------------------------------------------------
48Driver Notes and Issues
49-------------------------------------------------------------------------------
50
511. Developed on a Dell 320SLi
52 PCMCIA Card Services 2.6.2
53 Linux dell 1.2.10 #1 Thu Jun 29 20:23:41 PDT 1995 i386
54
552. rc.pcmcia may require loading pcmcia_core with io_speed=300:
56 'insmod pcmcia_core.o io_speed=300'.
57 This will avoid problems with fast systems which causes rx_framecnt
58 to return random values.
59
603. If hot extraction does not work for you, use 'ifconfig eth0 down'
61 before extraction.
62
634. There is a bad slow-down problem in this driver.
64
655. Future: Multicast processing. In the meantime, do _not_ compile your
66 kernel with multicast ip enabled.
67
68-------------------------------------------------------------------------------
69History
70-------------------------------------------------------------------------------
71Log: nmclan_cs.c,v
113aa838 72 * 2.5.75-ac1 2003/07/11 Alan Cox <alan@lxorguk.ukuu.org.uk>
1da177e4
LT		 73 * Fixed hang on card eject as we probe it
74 * Cleaned up to use new style locking.
75 *
76 * Revision 0.16 1995/07/01 06:42:17 rpao
77 * Bug fix: nmclan_reset() called CardServices incorrectly.
78 *
79 * Revision 0.15 1995/05/24 08:09:47 rpao
80 * Re-implement MULTI_TX dev->tbusy handling.
81 *
82 * Revision 0.14 1995/05/23 03:19:30 rpao
83 * Added, in nmclan_config(), "tuple.Attributes = 0;".
84 * Modified MACE ID check to ignore chip revision level.
85 * Avoid tx_free_frames race condition between _start_xmit and _interrupt.
86 *
87 * Revision 0.13 1995/05/18 05:56:34 rpao
88 * Statistics changes.
89 * Bug fix: nmclan_reset did not enable TX and RX: call restore_multicast_list.
90 * Bug fix: mace_interrupt checks ~MACE_IMR_DEFAULT. Fixes driver lockup.
91 *
92 * Revision 0.12 1995/05/14 00:12:23 rpao
93 * Statistics overhaul.
94 *
95
9695/05/13 rpao V0.10a
97 Bug fix: MACE statistics counters used wrong I/O ports.
98 Bug fix: mace_interrupt() needed to allow statistics to be
99 processed without RX or TX interrupts pending.
10095/05/11 rpao V0.10
101 Multiple transmit request processing.
102 Modified statistics to use MACE counters where possible.
10395/05/10 rpao V0.09 Bug fix: Must use IO_DATA_PATH_WIDTH_AUTO.
104 *Released
10595/05/10 rpao V0.08
106 Bug fix: Make all non-exported functions private by using
107 static keyword.
108 Bug fix: Test IntrCnt _before_ reading MACE_IR.
10995/05/10 rpao V0.07 Statistics.
11095/05/09 rpao V0.06 Fix rx_framecnt problem by addition of PCIC wait states.
111
112---------------------------------------------------------------------------- */
113
114#define DRV_NAME "nmclan_cs"
115#define DRV_VERSION "0.16"
116
117
118/* ----------------------------------------------------------------------------
119Conditional Compilation Options
120---------------------------------------------------------------------------- */
121
122#define MULTI_TX 0
123#define RESET_ON_TIMEOUT 1
124#define TX_INTERRUPTABLE 1
125#define RESET_XILINX 0
126
127/* ----------------------------------------------------------------------------
128Include Files
129---------------------------------------------------------------------------- */
130
131#include <linux/module.h>
132#include <linux/kernel.h>
133#include <linux/init.h>
134#include <linux/ptrace.h>
135#include <linux/slab.h>
136#include <linux/string.h>
137#include <linux/timer.h>
138#include <linux/interrupt.h>
139#include <linux/in.h>
140#include <linux/delay.h>
141#include <linux/ethtool.h>
142#include <linux/netdevice.h>
143#include <linux/etherdevice.h>
144#include <linux/skbuff.h>
145#include <linux/if_arp.h>
146#include <linux/ioport.h>
147#include <linux/bitops.h>
148
1da177e4
LT		 149#include <pcmcia/cs_types.h>
150#include <pcmcia/cs.h>
151#include <pcmcia/cisreg.h>
152#include <pcmcia/cistpl.h>
153#include <pcmcia/ds.h>
154
155#include <asm/uaccess.h>
156#include <asm/io.h>
157#include <asm/system.h>
158
159/* ----------------------------------------------------------------------------
160Defines
161---------------------------------------------------------------------------- */
162
163#define ETHER_ADDR_LEN ETH_ALEN
164 /* 6 bytes in an Ethernet Address */
165#define MACE_LADRF_LEN 8
166 /* 8 bytes in Logical Address Filter */
167
168/* Loop Control Defines */
169#define MACE_MAX_IR_ITERATIONS 10
170#define MACE_MAX_RX_ITERATIONS 12
171 /*
172 TBD: Dean brought this up, and I assumed the hardware would
173 handle it:
174
175 If MACE_MAX_RX_ITERATIONS is > 1, rx_framecnt may still be
176 non-zero when the isr exits. We may not get another interrupt
177 to process the remaining packets for some time.
178 */
179
180/*
181The Am2150 has a Xilinx XC3042 field programmable gate array (FPGA)
182which manages the interface between the MACE and the PCMCIA bus. It
183also includes buffer management for the 32K x 8 SRAM to control up to
184four transmit and 12 receive frames at a time.
185*/
186#define AM2150_MAX_TX_FRAMES 4
187#define AM2150_MAX_RX_FRAMES 12
188
189/* Am2150 Ethernet Card I/O Mapping */
190#define AM2150_RCV 0x00
191#define AM2150_XMT 0x04
192#define AM2150_XMT_SKIP 0x09
193#define AM2150_RCV_NEXT 0x0A
194#define AM2150_RCV_FRAME_COUNT 0x0B
195#define AM2150_MACE_BANK 0x0C
196#define AM2150_MACE_BASE 0x10
197
198/* MACE Registers */
199#define MACE_RCVFIFO 0
200#define MACE_XMTFIFO 1
201#define MACE_XMTFC 2
202#define MACE_XMTFS 3
203#define MACE_XMTRC 4
204#define MACE_RCVFC 5
205#define MACE_RCVFS 6
206#define MACE_FIFOFC 7
207#define MACE_IR 8
208#define MACE_IMR 9
209#define MACE_PR 10
210#define MACE_BIUCC 11
211#define MACE_FIFOCC 12
212#define MACE_MACCC 13
213#define MACE_PLSCC 14
214#define MACE_PHYCC 15
215#define MACE_CHIPIDL 16
216#define MACE_CHIPIDH 17
217#define MACE_IAC 18
218/* Reserved */
219#define MACE_LADRF 20
220#define MACE_PADR 21
221/* Reserved */
222/* Reserved */
223#define MACE_MPC 24
224/* Reserved */
225#define MACE_RNTPC 26
226#define MACE_RCVCC 27
227/* Reserved */
228#define MACE_UTR 29
229#define MACE_RTR1 30
230#define MACE_RTR2 31
231
232/* MACE Bit Masks */
233#define MACE_XMTRC_EXDEF 0x80
234#define MACE_XMTRC_XMTRC 0x0F
235
236#define MACE_XMTFS_XMTSV 0x80
237#define MACE_XMTFS_UFLO 0x40
238#define MACE_XMTFS_LCOL 0x20
239#define MACE_XMTFS_MORE 0x10
240#define MACE_XMTFS_ONE 0x08
241#define MACE_XMTFS_DEFER 0x04
242#define MACE_XMTFS_LCAR 0x02
243#define MACE_XMTFS_RTRY 0x01
244
245#define MACE_RCVFS_RCVSTS 0xF000
246#define MACE_RCVFS_OFLO 0x8000
247#define MACE_RCVFS_CLSN 0x4000
248#define MACE_RCVFS_FRAM 0x2000
249#define MACE_RCVFS_FCS 0x1000
250
251#define MACE_FIFOFC_RCVFC 0xF0
252#define MACE_FIFOFC_XMTFC 0x0F
253
254#define MACE_IR_JAB 0x80
255#define MACE_IR_BABL 0x40
256#define MACE_IR_CERR 0x20
257#define MACE_IR_RCVCCO 0x10
258#define MACE_IR_RNTPCO 0x08
259#define MACE_IR_MPCO 0x04
260#define MACE_IR_RCVINT 0x02
261#define MACE_IR_XMTINT 0x01
262
263#define MACE_MACCC_PROM 0x80
264#define MACE_MACCC_DXMT2PD 0x40
265#define MACE_MACCC_EMBA 0x20
266#define MACE_MACCC_RESERVED 0x10
267#define MACE_MACCC_DRCVPA 0x08
268#define MACE_MACCC_DRCVBC 0x04
269#define MACE_MACCC_ENXMT 0x02
270#define MACE_MACCC_ENRCV 0x01
271
272#define MACE_PHYCC_LNKFL 0x80
273#define MACE_PHYCC_DLNKTST 0x40
274#define MACE_PHYCC_REVPOL 0x20
275#define MACE_PHYCC_DAPC 0x10
276#define MACE_PHYCC_LRT 0x08
277#define MACE_PHYCC_ASEL 0x04
278#define MACE_PHYCC_RWAKE 0x02
279#define MACE_PHYCC_AWAKE 0x01
280
281#define MACE_IAC_ADDRCHG 0x80
282#define MACE_IAC_PHYADDR 0x04
283#define MACE_IAC_LOGADDR 0x02
284
285#define MACE_UTR_RTRE 0x80
286#define MACE_UTR_RTRD 0x40
287#define MACE_UTR_RPA 0x20
288#define MACE_UTR_FCOLL 0x10
289#define MACE_UTR_RCVFCSE 0x08
290#define MACE_UTR_LOOP_INCL_MENDEC 0x06
291#define MACE_UTR_LOOP_NO_MENDEC 0x04
292#define MACE_UTR_LOOP_EXTERNAL 0x02
293#define MACE_UTR_LOOP_NONE 0x00
294#define MACE_UTR_RESERVED 0x01
295
296/* Switch MACE register bank (only 0 and 1 are valid) */
297#define MACEBANK(win_num) outb((win_num), ioaddr + AM2150_MACE_BANK)
298
299#define MACE_IMR_DEFAULT \
300 (0xFF - \
301 ( \
302 MACE_IR_CERR | \
303 MACE_IR_RCVCCO | \
304 MACE_IR_RNTPCO | \
305 MACE_IR_MPCO | \
306 MACE_IR_RCVINT | \
307 MACE_IR_XMTINT \
308 ) \
309 )
310#undef MACE_IMR_DEFAULT
311#define MACE_IMR_DEFAULT 0x00 /* New statistics handling: grab everything */
312
313#define TX_TIMEOUT ((400*HZ)/1000)
314
315/* ----------------------------------------------------------------------------
316Type Definitions
317---------------------------------------------------------------------------- */
318
319typedef struct _mace_statistics {
320 /* MACE_XMTFS */
321 int xmtsv;
322 int uflo;
323 int lcol;
324 int more;
325 int one;
326 int defer;
327 int lcar;
328 int rtry;
329
330 /* MACE_XMTRC */
331 int exdef;
332 int xmtrc;
333
334 /* RFS1--Receive Status (RCVSTS) */
335 int oflo;
336 int clsn;
337 int fram;
338 int fcs;
339
340 /* RFS2--Runt Packet Count (RNTPC) */
341 int rfs_rntpc;
342
343 /* RFS3--Receive Collision Count (RCVCC) */
344 int rfs_rcvcc;
345
346 /* MACE_IR */
347 int jab;
348 int babl;
349 int cerr;
350 int rcvcco;
351 int rntpco;
352 int mpco;
353
354 /* MACE_MPC */
355 int mpc;
356
357 /* MACE_RNTPC */
358 int rntpc;
359
360 /* MACE_RCVCC */
361 int rcvcc;
362} mace_statistics;
363
364typedef struct _mace_private {
fd238232 365 struct pcmcia_device *p_dev;
1da177e4
LT		 366 dev_node_t node;
367 struct net_device_stats linux_stats; /* Linux statistics counters */
368 mace_statistics mace_stats; /* MACE chip statistics counters */
369
370 /* restore_multicast_list() state variables */
371 int multicast_ladrf[MACE_LADRF_LEN]; /* Logical address filter */
372 int multicast_num_addrs;
373
374 char tx_free_frames; /* Number of free transmit frame buffers */
375 char tx_irq_disabled; /* MACE TX interrupt disabled */
376
377 spinlock_t bank_lock; /* Must be held if you step off bank 0 */
378} mace_private;
379
380/* ----------------------------------------------------------------------------
381Private Global Variables
382---------------------------------------------------------------------------- */
383
384#ifdef PCMCIA_DEBUG
385static char rcsid[] =
386"nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao";
387static char *version =
388DRV_NAME " " DRV_VERSION " (Roger C. Pao)";
389#endif
390
f71e1309 391static const char *if_names[]={
1da177e4
LT		 392 "Auto", "10baseT", "BNC",
393};
394
395/* ----------------------------------------------------------------------------
396Parameters
397 These are the parameters that can be set during loading with
398 'insmod'.
399---------------------------------------------------------------------------- */
400
401MODULE_DESCRIPTION("New Media PCMCIA ethernet driver");
402MODULE_LICENSE("GPL");
403
404#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
405
406/* 0=auto, 1=10baseT, 2 = 10base2, default=auto */
407INT_MODULE_PARM(if_port, 0);
408
409#ifdef PCMCIA_DEBUG
410INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
411#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
412#else
413#define DEBUG(n, args...)
414#endif
415
416/* ----------------------------------------------------------------------------
417Function Prototypes
418---------------------------------------------------------------------------- */
419
15b99ac1 420static int nmclan_config(struct pcmcia_device *link);
fba395ee 421static void nmclan_release(struct pcmcia_device *link);
1da177e4
LT		 422
423static void nmclan_reset(struct net_device *dev);
424static int mace_config(struct net_device *dev, struct ifmap *map);
425static int mace_open(struct net_device *dev);
426static int mace_close(struct net_device *dev);
427static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev);
428static void mace_tx_timeout(struct net_device *dev);
7d12e780 429static irqreturn_t mace_interrupt(int irq, void *dev_id);
1da177e4
LT		 430static struct net_device_stats *mace_get_stats(struct net_device *dev);
431static int mace_rx(struct net_device *dev, unsigned char RxCnt);
432static void restore_multicast_list(struct net_device *dev);
433static void set_multicast_list(struct net_device *dev);
7282d491 434static const struct ethtool_ops netdev_ethtool_ops;
1da177e4
LT		 435
436
cc3b4866 437static void nmclan_detach(struct pcmcia_device *p_dev);
1da177e4 438
28b1801d
SH		 439static const struct net_device_ops mace_netdev_ops = {
440 .ndo_open = mace_open,
441 .ndo_stop = mace_close,
442 .ndo_start_xmit = mace_start_xmit,
443 .ndo_tx_timeout = mace_tx_timeout,
444 .ndo_set_config = mace_config,
445 .ndo_get_stats = mace_get_stats,
446 .ndo_set_multicast_list = set_multicast_list,
447 .ndo_change_mtu = eth_change_mtu,
448 .ndo_set_mac_address = eth_mac_addr,
449 .ndo_validate_addr = eth_validate_addr,
450};
451
1da177e4
LT		 452/* ----------------------------------------------------------------------------
453nmclan_attach
454 Creates an "instance" of the driver, allocating local data
455 structures for one device. The device is registered with Card
456 Services.
457---------------------------------------------------------------------------- */
458
15b99ac1 459static int nmclan_probe(struct pcmcia_device *link)
1da177e4
LT		 460{
461 mace_private *lp;
1da177e4 462 struct net_device *dev;
1da177e4
LT		 463
464 DEBUG(0, "nmclan_attach()\n");
465 DEBUG(1, "%s\n", rcsid);
466
467 /* Create new ethernet device */
468 dev = alloc_etherdev(sizeof(mace_private));
469 if (!dev)
f8cfa618 470 return -ENOMEM;
1da177e4 471 lp = netdev_priv(dev);
fba395ee 472 lp->p_dev = link;
1da177e4
LT		 473 link->priv = dev;
474
475 spin_lock_init(&lp->bank_lock);
476 link->io.NumPorts1 = 32;
477 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
478 link->io.IOAddrLines = 5;
479 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
480 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
481 link->irq.Handler = &mace_interrupt;
482 link->irq.Instance = dev;
483 link->conf.Attributes = CONF_ENABLE_IRQ;
1da177e4
LT		 484 link->conf.IntType = INT_MEMORY_AND_IO;
485 link->conf.ConfigIndex = 1;
486 link->conf.Present = PRESENT_OPTION;
487
488 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
489
28b1801d 490 dev->netdev_ops = &mace_netdev_ops;
1da177e4 491 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
1da177e4 492 dev->watchdog_timeo = TX_TIMEOUT;
1da177e4 493
15b99ac1 494 return nmclan_config(link);
1da177e4
LT		 495} /* nmclan_attach */
496
497/* ----------------------------------------------------------------------------
498nmclan_detach
499 This deletes a driver "instance". The device is de-registered
500 with Card Services. If it has been released, all local data
501 structures are freed. Otherwise, the structures will be freed
502 when the device is released.
503---------------------------------------------------------------------------- */
504
fba395ee 505static void nmclan_detach(struct pcmcia_device *link)
1da177e4
LT		 506{
507 struct net_device *dev = link->priv;
1da177e4
LT		 508
509 DEBUG(0, "nmclan_detach(0x%p)\n", link);
510
fd238232 511 if (link->dev_node)
1da177e4
LT		 512 unregister_netdev(dev);
513
e2d40963 514 nmclan_release(link);
1da177e4 515
1da177e4
LT		 516 free_netdev(dev);
517} /* nmclan_detach */
518
519/* ----------------------------------------------------------------------------
520mace_read
521 Reads a MACE register. This is bank independent; however, the
522 caller must ensure that this call is not interruptable. We are
523 assuming that during normal operation, the MACE is always in
524 bank 0.
525---------------------------------------------------------------------------- */
906da809 526static int mace_read(mace_private *lp, unsigned int ioaddr, int reg)
1da177e4
LT		 527{
528 int data = 0xFF;
529 unsigned long flags;
530
531 switch (reg >> 4) {
532 case 0: /* register 0-15 */
533 data = inb(ioaddr + AM2150_MACE_BASE + reg);
534 break;
535 case 1: /* register 16-31 */
536 spin_lock_irqsave(&lp->bank_lock, flags);
537 MACEBANK(1);
538 data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
539 MACEBANK(0);
540 spin_unlock_irqrestore(&lp->bank_lock, flags);
541 break;
542 }
543 return (data & 0xFF);
544} /* mace_read */
545
546/* ----------------------------------------------------------------------------
547mace_write
548 Writes to a MACE register. This is bank independent; however,
549 the caller must ensure that this call is not interruptable. We
550 are assuming that during normal operation, the MACE is always in
551 bank 0.
552---------------------------------------------------------------------------- */
906da809
OJ		 553static void mace_write(mace_private *lp, unsigned int ioaddr, int reg,
554 int data)
1da177e4
LT		 555{
556 unsigned long flags;
557
558 switch (reg >> 4) {
559 case 0: /* register 0-15 */
560 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg);
561 break;
562 case 1: /* register 16-31 */
563 spin_lock_irqsave(&lp->bank_lock, flags);
564 MACEBANK(1);
565 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
566 MACEBANK(0);
567 spin_unlock_irqrestore(&lp->bank_lock, flags);
568 break;
569 }
570} /* mace_write */
571
572/* ----------------------------------------------------------------------------
573mace_init
574 Resets the MACE chip.
575---------------------------------------------------------------------------- */
906da809 576static int mace_init(mace_private *lp, unsigned int ioaddr, char *enet_addr)
1da177e4
LT		 577{
578 int i;
579 int ct = 0;
580
581 /* MACE Software reset */
582 mace_write(lp, ioaddr, MACE_BIUCC, 1);
583 while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) {
584 /* Wait for reset bit to be cleared automatically after <= 200ns */;
585 if(++ct > 500)
586 {
587 printk(KERN_ERR "mace: reset failed, card removed ?\n");
588 return -1;
589 }
590 udelay(1);
591 }
592 mace_write(lp, ioaddr, MACE_BIUCC, 0);
593
594 /* The Am2150 requires that the MACE FIFOs operate in burst mode. */
595 mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F);
596
597 mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */
598 mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */
599
600 /*
601 * Bit 2-1 PORTSEL[1-0] Port Select.
602 * 00 AUI/10Base-2
603 * 01 10Base-T
604 * 10 DAI Port (reserved in Am2150)
605 * 11 GPSI
606 * For this card, only the first two are valid.
607 * So, PLSCC should be set to
608 * 0x00 for 10Base-2
609 * 0x02 for 10Base-T
610 * Or just set ASEL in PHYCC below!
611 */
612 switch (if_port) {
613 case 1:
614 mace_write(lp, ioaddr, MACE_PLSCC, 0x02);
615 break;
616 case 2:
617 mace_write(lp, ioaddr, MACE_PLSCC, 0x00);
618 break;
619 default:
620 mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4);
621 /* ASEL Auto Select. When set, the PORTSEL[1-0] bits are overridden,
622 and the MACE device will automatically select the operating media
623 interface port. */
624 break;
625 }
626
627 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR);
628 /* Poll ADDRCHG bit */
629 ct = 0;
630 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
631 {
632 if(++ ct > 500)
633 {
634 printk(KERN_ERR "mace: ADDRCHG timeout, card removed ?\n");
635 return -1;
636 }
637 }
638 /* Set PADR register */
639 for (i = 0; i < ETHER_ADDR_LEN; i++)
640 mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]);
641
642 /* MAC Configuration Control Register should be written last */
643 /* Let set_multicast_list set this. */
644 /* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */
645 mace_write(lp, ioaddr, MACE_MACCC, 0x00);
646 return 0;
647} /* mace_init */
648
649/* ----------------------------------------------------------------------------
650nmclan_config
651 This routine is scheduled to run after a CARD_INSERTION event
652 is received, to configure the PCMCIA socket, and to make the
653 ethernet device available to the system.
654---------------------------------------------------------------------------- */
655
656#define CS_CHECK(fn, ret) \
657 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
658
15b99ac1 659static int nmclan_config(struct pcmcia_device *link)
1da177e4 660{
1da177e4
LT		 661 struct net_device *dev = link->priv;
662 mace_private *lp = netdev_priv(dev);
663 tuple_t tuple;
1da177e4
LT		 664 u_char buf[64];
665 int i, last_ret, last_fn;
906da809 666 unsigned int ioaddr;
1da177e4
LT		 667
668 DEBUG(0, "nmclan_config(0x%p)\n", link);
669
fba395ee
DB		 670 CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
671 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
672 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1da177e4
LT		 673 dev->irq = link->irq.AssignedIRQ;
674 dev->base_addr = link->io.BasePort1;
675
676 ioaddr = dev->base_addr;
677
678 /* Read the ethernet address from the CIS. */
679 tuple.DesiredTuple = 0x80 /* CISTPL_CFTABLE_ENTRY_MISC */;
680 tuple.TupleData = buf;
681 tuple.TupleDataMax = 64;
682 tuple.TupleOffset = 0;
af2b3b50 683 tuple.Attributes = 0;
fba395ee
DB		 684 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
685 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
1da177e4
LT		 686 memcpy(dev->dev_addr, tuple.TupleData, ETHER_ADDR_LEN);
687
688 /* Verify configuration by reading the MACE ID. */
689 {
690 char sig[2];
691
692 sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL);
693 sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH);
694 if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) {
695 DEBUG(0, "nmclan_cs configured: mace id=%x %x\n",
696 sig[0], sig[1]);
697 } else {
698 printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should"
699 " be 0x40 0x?9\n", sig[0], sig[1]);
15b99ac1 700 return -ENODEV;
1da177e4
LT		 701 }
702 }
703
704 if(mace_init(lp, ioaddr, dev->dev_addr) == -1)
705 goto failed;
706
707 /* The if_port symbol can be set when the module is loaded */
708 if (if_port <= 2)
709 dev->if_port = if_port;
710 else
711 printk(KERN_NOTICE "nmclan_cs: invalid if_port requested\n");
712
fd238232 713 link->dev_node = &lp->node;
fba395ee 714 SET_NETDEV_DEV(dev, &handle_to_dev(link));
1da177e4
LT		 715
716 i = register_netdev(dev);
717 if (i != 0) {
718 printk(KERN_NOTICE "nmclan_cs: register_netdev() failed\n");
fd238232 719 link->dev_node = NULL;
1da177e4
LT		 720 goto failed;
721 }
722
723 strcpy(lp->node.dev_name, dev->name);
724
0795af57 725 printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port,"
e174961c 726 " hw_addr %pM\n",
0795af57 727 dev->name, dev->base_addr, dev->irq, if_names[dev->if_port],
e174961c 728 dev->dev_addr);
15b99ac1 729 return 0;
1da177e4
LT		 730
731cs_failed:
15b99ac1 732 cs_error(link, last_fn, last_ret);
1da177e4 733failed:
15b99ac1
DB		 734 nmclan_release(link);
735 return -ENODEV;
1da177e4
LT		 736} /* nmclan_config */
737
738/* ----------------------------------------------------------------------------
739nmclan_release
740 After a card is removed, nmclan_release() will unregister the
741 net device, and release the PCMCIA configuration. If the device
742 is still open, this will be postponed until it is closed.
743---------------------------------------------------------------------------- */
fba395ee 744static void nmclan_release(struct pcmcia_device *link)
1da177e4 745{
5f2a71fc 746 DEBUG(0, "nmclan_release(0x%p)\n", link);
fba395ee 747 pcmcia_disable_device(link);
1da177e4
LT		 748}
749
fba395ee 750static int nmclan_suspend(struct pcmcia_device *link)
98e4c28b 751{
98e4c28b
DB		 752 struct net_device *dev = link->priv;
753
e2d40963 754 if (link->open)
8661bb5b 755 netif_device_detach(dev);
98e4c28b
DB		 756
757 return 0;
758}
759
fba395ee 760static int nmclan_resume(struct pcmcia_device *link)
98e4c28b 761{
98e4c28b
DB		 762 struct net_device *dev = link->priv;
763
e2d40963 764 if (link->open) {
8661bb5b
DB		 765 nmclan_reset(dev);
766 netif_device_attach(dev);
98e4c28b
DB		 767 }
768
769 return 0;
770}
771
1da177e4
LT		 772
773/* ----------------------------------------------------------------------------
774nmclan_reset
775 Reset and restore all of the Xilinx and MACE registers.
776---------------------------------------------------------------------------- */
777static void nmclan_reset(struct net_device *dev)
778{
779 mace_private *lp = netdev_priv(dev);
780
781#if RESET_XILINX
fba395ee 782 struct pcmcia_device *link = &lp->link;
1da177e4
LT		 783 conf_reg_t reg;
784 u_long OrigCorValue;
785
786 /* Save original COR value */
787 reg.Function = 0;
788 reg.Action = CS_READ;
789 reg.Offset = CISREG_COR;
790 reg.Value = 0;
fba395ee 791 pcmcia_access_configuration_register(link, &reg);
1da177e4
LT		 792 OrigCorValue = reg.Value;
793
794 /* Reset Xilinx */
795 reg.Action = CS_WRITE;
796 reg.Offset = CISREG_COR;
797 DEBUG(1, "nmclan_reset: OrigCorValue=0x%lX, resetting...\n",
798 OrigCorValue);
799 reg.Value = COR_SOFT_RESET;
fba395ee 800 pcmcia_access_configuration_register(link, &reg);
1da177e4
LT		 801 /* Need to wait for 20 ms for PCMCIA to finish reset. */
802
803 /* Restore original COR configuration index */
804 reg.Value = COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK);
fba395ee 805 pcmcia_access_configuration_register(link, &reg);
1da177e4
LT		 806 /* Xilinx is now completely reset along with the MACE chip. */
807 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
808
809#endif /* #if RESET_XILINX */
810
811 /* Xilinx is now completely reset along with the MACE chip. */
812 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
813
814 /* Reinitialize the MACE chip for operation. */
815 mace_init(lp, dev->base_addr, dev->dev_addr);
816 mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT);
817
818 /* Restore the multicast list and enable TX and RX. */
819 restore_multicast_list(dev);
820} /* nmclan_reset */
821
822/* ----------------------------------------------------------------------------
823mace_config
824 [Someone tell me what this is supposed to do? Is if_port a defined
825 standard? If so, there should be defines to indicate 1=10Base-T,
826 2=10Base-2, etc. including limited automatic detection.]
827---------------------------------------------------------------------------- */
828static int mace_config(struct net_device *dev, struct ifmap *map)
829{
830 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
831 if (map->port <= 2) {
832 dev->if_port = map->port;
833 printk(KERN_INFO "%s: switched to %s port\n", dev->name,
834 if_names[dev->if_port]);
835 } else
836 return -EINVAL;
837 }
838 return 0;
839} /* mace_config */
840
841/* ----------------------------------------------------------------------------
842mace_open
843 Open device driver.
844---------------------------------------------------------------------------- */
845static int mace_open(struct net_device *dev)
846{
906da809 847 unsigned int ioaddr = dev->base_addr;
1da177e4 848 mace_private *lp = netdev_priv(dev);
fba395ee 849 struct pcmcia_device *link = lp->p_dev;
1da177e4 850
9940ec36 851 if (!pcmcia_dev_present(link))
1da177e4
LT		 852 return -ENODEV;
853
854 link->open++;
855
856 MACEBANK(0);
857
858 netif_start_queue(dev);
859 nmclan_reset(dev);
860
861 return 0; /* Always succeed */
862} /* mace_open */
863
864/* ----------------------------------------------------------------------------
865mace_close
866 Closes device driver.
867---------------------------------------------------------------------------- */
868static int mace_close(struct net_device *dev)
869{
906da809 870 unsigned int ioaddr = dev->base_addr;
1da177e4 871 mace_private *lp = netdev_priv(dev);
fba395ee 872 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 873
874 DEBUG(2, "%s: shutting down ethercard.\n", dev->name);
875
876 /* Mask off all interrupts from the MACE chip. */
877 outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR);
878
879 link->open--;
880 netif_stop_queue(dev);
881
882 return 0;
883} /* mace_close */
884
885static void netdev_get_drvinfo(struct net_device *dev,
886 struct ethtool_drvinfo *info)
887{
888 strcpy(info->driver, DRV_NAME);
889 strcpy(info->version, DRV_VERSION);
890 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
891}
892
893#ifdef PCMCIA_DEBUG
894static u32 netdev_get_msglevel(struct net_device *dev)
895{
896 return pc_debug;
897}
898
899static void netdev_set_msglevel(struct net_device *dev, u32 level)
900{
901 pc_debug = level;
902}
903#endif /* PCMCIA_DEBUG */
904
7282d491 905static const struct ethtool_ops netdev_ethtool_ops = {
1da177e4
LT		 906 .get_drvinfo = netdev_get_drvinfo,
907#ifdef PCMCIA_DEBUG
908 .get_msglevel = netdev_get_msglevel,
909 .set_msglevel = netdev_set_msglevel,
910#endif /* PCMCIA_DEBUG */
911};
912
913/* ----------------------------------------------------------------------------
914mace_start_xmit
915 This routine begins the packet transmit function. When completed,
916 it will generate a transmit interrupt.
917
918 According to /usr/src/linux/net/inet/dev.c, if _start_xmit
919 returns 0, the "packet is now solely the responsibility of the
920 driver." If _start_xmit returns non-zero, the "transmission
921 failed, put skb back into a list."
922---------------------------------------------------------------------------- */
923
924static void mace_tx_timeout(struct net_device *dev)
925{
926 mace_private *lp = netdev_priv(dev);
fba395ee 927 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 928
929 printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name);
930#if RESET_ON_TIMEOUT
931 printk("resetting card\n");
994917f8 932 pcmcia_reset_card(link->socket);
1da177e4
LT		 933#else /* #if RESET_ON_TIMEOUT */
934 printk("NOT resetting card\n");
935#endif /* #if RESET_ON_TIMEOUT */
936 dev->trans_start = jiffies;
937 netif_wake_queue(dev);
938}
939
940static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev)
941{
942 mace_private *lp = netdev_priv(dev);
906da809 943 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 944
945 netif_stop_queue(dev);
946
947 DEBUG(3, "%s: mace_start_xmit(length = %ld) called.\n",
948 dev->name, (long)skb->len);
949
950#if (!TX_INTERRUPTABLE)
951 /* Disable MACE TX interrupts. */
952 outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT,
953 ioaddr + AM2150_MACE_BASE + MACE_IMR);
954 lp->tx_irq_disabled=1;
955#endif /* #if (!TX_INTERRUPTABLE) */
956
957 {
958 /* This block must not be interrupted by another transmit request!
959 mace_tx_timeout will take care of timer-based retransmissions from
960 the upper layers. The interrupt handler is guaranteed never to
961 service a transmit interrupt while we are in here.
962 */
963
964 lp->linux_stats.tx_bytes += skb->len;
965 lp->tx_free_frames--;
966
967 /* WARNING: Write the _exact_ number of bytes written in the header! */
968 /* Put out the word header [must be an outw()] . . . */
969 outw(skb->len, ioaddr + AM2150_XMT);
970 /* . . . and the packet [may be any combination of outw() and outb()] */
971 outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1);
972 if (skb->len & 1) {
973 /* Odd byte transfer */
974 outb(skb->data[skb->len-1], ioaddr + AM2150_XMT);
975 }
976
977 dev->trans_start = jiffies;
978
979#if MULTI_TX
980 if (lp->tx_free_frames > 0)
981 netif_start_queue(dev);
982#endif /* #if MULTI_TX */
983 }
984
985#if (!TX_INTERRUPTABLE)
986 /* Re-enable MACE TX interrupts. */
987 lp->tx_irq_disabled=0;
988 outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR);
989#endif /* #if (!TX_INTERRUPTABLE) */
990
991 dev_kfree_skb(skb);
992
6ed10654 993 return NETDEV_TX_OK;
1da177e4
LT		 994} /* mace_start_xmit */
995
996/* ----------------------------------------------------------------------------
997mace_interrupt
998 The interrupt handler.
999---------------------------------------------------------------------------- */
7d12e780 1000static irqreturn_t mace_interrupt(int irq, void *dev_id)
1da177e4
LT		 1001{
1002 struct net_device *dev = (struct net_device *) dev_id;
1003 mace_private *lp = netdev_priv(dev);
906da809 1004 unsigned int ioaddr;
1da177e4
LT		 1005 int status;
1006 int IntrCnt = MACE_MAX_IR_ITERATIONS;
1007
1008 if (dev == NULL) {
1009 DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.\n",
1010 irq);
1011 return IRQ_NONE;
1012 }
1013
c196d80f
MG		 1014 ioaddr = dev->base_addr;
1015
1da177e4
LT		 1016 if (lp->tx_irq_disabled) {
1017 printk(
1018 (lp->tx_irq_disabled?
1019 KERN_NOTICE "%s: Interrupt with tx_irq_disabled "
1020 "[isr=%02X, imr=%02X]\n":
1021 KERN_NOTICE "%s: Re-entering the interrupt handler "
1022 "[isr=%02X, imr=%02X]\n"),
1023 dev->name,
1024 inb(ioaddr + AM2150_MACE_BASE + MACE_IR),
1025 inb(ioaddr + AM2150_MACE_BASE + MACE_IMR)
1026 );
1027 /* WARNING: MACE_IR has been read! */
1028 return IRQ_NONE;
1029 }
1030
1031 if (!netif_device_present(dev)) {
1032 DEBUG(2, "%s: interrupt from dead card\n", dev->name);
1033 return IRQ_NONE;
1034 }
1035
1036 do {
1037 /* WARNING: MACE_IR is a READ/CLEAR port! */
1038 status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR);
1039
1040 DEBUG(3, "mace_interrupt: irq 0x%X status 0x%X.\n", irq, status);
1041
1042 if (status & MACE_IR_RCVINT) {
1043 mace_rx(dev, MACE_MAX_RX_ITERATIONS);
1044 }
1045
1046 if (status & MACE_IR_XMTINT) {
1047 unsigned char fifofc;
1048 unsigned char xmtrc;
1049 unsigned char xmtfs;
1050
1051 fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC);
1052 if ((fifofc & MACE_FIFOFC_XMTFC)==0) {
1053 lp->linux_stats.tx_errors++;
1054 outb(0xFF, ioaddr + AM2150_XMT_SKIP);
1055 }
1056
1057 /* Transmit Retry Count (XMTRC, reg 4) */
1058 xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC);
1059 if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++;
1060 lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC);
1061
1062 if (
1063 (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) &
1064 MACE_XMTFS_XMTSV /* Transmit Status Valid */
1065 ) {
1066 lp->mace_stats.xmtsv++;
1067
1068 if (xmtfs & ~MACE_XMTFS_XMTSV) {
1069 if (xmtfs & MACE_XMTFS_UFLO) {
1070 /* Underflow. Indicates that the Transmit FIFO emptied before
1071 the end of frame was reached. */
1072 lp->mace_stats.uflo++;
1073 }
1074 if (xmtfs & MACE_XMTFS_LCOL) {
1075 /* Late Collision */
1076 lp->mace_stats.lcol++;
1077 }
1078 if (xmtfs & MACE_XMTFS_MORE) {
1079 /* MORE than one retry was needed */
1080 lp->mace_stats.more++;
1081 }
1082 if (xmtfs & MACE_XMTFS_ONE) {
1083 /* Exactly ONE retry occurred */
1084 lp->mace_stats.one++;
1085 }
1086 if (xmtfs & MACE_XMTFS_DEFER) {
1087 /* Transmission was defered */
1088 lp->mace_stats.defer++;
1089 }
1090 if (xmtfs & MACE_XMTFS_LCAR) {
1091 /* Loss of carrier */
1092 lp->mace_stats.lcar++;
1093 }
1094 if (xmtfs & MACE_XMTFS_RTRY) {
1095 /* Retry error: transmit aborted after 16 attempts */
1096 lp->mace_stats.rtry++;
1097 }
1098 } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */
1099
1100 } /* if (xmtfs & MACE_XMTFS_XMTSV) */
1101
1102 lp->linux_stats.tx_packets++;
1103 lp->tx_free_frames++;
1104 netif_wake_queue(dev);
1105 } /* if (status & MACE_IR_XMTINT) */
1106
1107 if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) {
1108 if (status & MACE_IR_JAB) {
1109 /* Jabber Error. Excessive transmit duration (20-150ms). */
1110 lp->mace_stats.jab++;
1111 }
1112 if (status & MACE_IR_BABL) {
1113 /* Babble Error. >1518 bytes transmitted. */
1114 lp->mace_stats.babl++;
1115 }
1116 if (status & MACE_IR_CERR) {
1117 /* Collision Error. CERR indicates the absence of the
1118 Signal Quality Error Test message after a packet
1119 transmission. */
1120 lp->mace_stats.cerr++;
1121 }
1122 if (status & MACE_IR_RCVCCO) {
1123 /* Receive Collision Count Overflow; */
1124 lp->mace_stats.rcvcco++;
1125 }
1126 if (status & MACE_IR_RNTPCO) {
1127 /* Runt Packet Count Overflow */
1128 lp->mace_stats.rntpco++;
1129 }
1130 if (status & MACE_IR_MPCO) {
1131 /* Missed Packet Count Overflow */
1132 lp->mace_stats.mpco++;
1133 }
1134 } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */
1135
1136 } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt));
1137
1138 return IRQ_HANDLED;
1139} /* mace_interrupt */
1140
1141/* ----------------------------------------------------------------------------
1142mace_rx
1143 Receives packets.
1144---------------------------------------------------------------------------- */
1145static int mace_rx(struct net_device *dev, unsigned char RxCnt)
1146{
1147 mace_private *lp = netdev_priv(dev);
906da809 1148 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 1149 unsigned char rx_framecnt;
1150 unsigned short rx_status;
1151
1152 while (
1153 ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) &&
1154 (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */
1155 (RxCnt--)
1156 ) {
1157 rx_status = inw(ioaddr + AM2150_RCV);
1158
1159 DEBUG(3, "%s: in mace_rx(), framecnt 0x%X, rx_status"
1160 " 0x%X.\n", dev->name, rx_framecnt, rx_status);
1161
1162 if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */
1163 lp->linux_stats.rx_errors++;
1164 if (rx_status & MACE_RCVFS_OFLO) {
1165 lp->mace_stats.oflo++;
1166 }
1167 if (rx_status & MACE_RCVFS_CLSN) {
1168 lp->mace_stats.clsn++;
1169 }
1170 if (rx_status & MACE_RCVFS_FRAM) {
1171 lp->mace_stats.fram++;
1172 }
1173 if (rx_status & MACE_RCVFS_FCS) {
1174 lp->mace_stats.fcs++;
1175 }
1176 } else {
1177 short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4;
1178 /* Auto Strip is off, always subtract 4 */
1179 struct sk_buff *skb;
1180
1181 lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV);
1182 /* runt packet count */
1183 lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV);
1184 /* rcv collision count */
1185
1186 DEBUG(3, " receiving packet size 0x%X rx_status"
1187 " 0x%X.\n", pkt_len, rx_status);
1188
1189 skb = dev_alloc_skb(pkt_len+2);
1190
1191 if (skb != NULL) {
1da177e4
LT		 1192 skb_reserve(skb, 2);
1193 insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1);
1194 if (pkt_len & 1)
27a884dc 1195 *(skb_tail_pointer(skb) - 1) = inb(ioaddr + AM2150_RCV);
1da177e4
LT		 1196 skb->protocol = eth_type_trans(skb, dev);
1197
1198 netif_rx(skb); /* Send the packet to the upper (protocol) layers. */
1199
1da177e4 1200 lp->linux_stats.rx_packets++;
6f258910 1201 lp->linux_stats.rx_bytes += pkt_len;
1da177e4
LT		 1202 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1203 continue;
1204 } else {
1205 DEBUG(1, "%s: couldn't allocate a sk_buff of size"
1206 " %d.\n", dev->name, pkt_len);
1207 lp->linux_stats.rx_dropped++;
1208 }
1209 }
1210 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1211 } /* while */
1212
1213 return 0;
1214} /* mace_rx */
1215
1216/* ----------------------------------------------------------------------------
1217pr_linux_stats
1218---------------------------------------------------------------------------- */
1219static void pr_linux_stats(struct net_device_stats *pstats)
1220{
1221 DEBUG(2, "pr_linux_stats\n");
1222 DEBUG(2, " rx_packets=%-7ld tx_packets=%ld\n",
1223 (long)pstats->rx_packets, (long)pstats->tx_packets);
1224 DEBUG(2, " rx_errors=%-7ld tx_errors=%ld\n",
1225 (long)pstats->rx_errors, (long)pstats->tx_errors);
1226 DEBUG(2, " rx_dropped=%-7ld tx_dropped=%ld\n",
1227 (long)pstats->rx_dropped, (long)pstats->tx_dropped);
1228 DEBUG(2, " multicast=%-7ld collisions=%ld\n",
1229 (long)pstats->multicast, (long)pstats->collisions);
1230
1231 DEBUG(2, " rx_length_errors=%-7ld rx_over_errors=%ld\n",
1232 (long)pstats->rx_length_errors, (long)pstats->rx_over_errors);
1233 DEBUG(2, " rx_crc_errors=%-7ld rx_frame_errors=%ld\n",
1234 (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors);
1235 DEBUG(2, " rx_fifo_errors=%-7ld rx_missed_errors=%ld\n",
1236 (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors);
1237
1238 DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n",
1239 (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors);
1240 DEBUG(2, " tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n",
1241 (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors);
1242 DEBUG(2, " tx_window_errors=%ld\n",
1243 (long)pstats->tx_window_errors);
1244} /* pr_linux_stats */
1245
1246/* ----------------------------------------------------------------------------
1247pr_mace_stats
1248---------------------------------------------------------------------------- */
1249static void pr_mace_stats(mace_statistics *pstats)
1250{
1251 DEBUG(2, "pr_mace_stats\n");
1252
1253 DEBUG(2, " xmtsv=%-7d uflo=%d\n",
1254 pstats->xmtsv, pstats->uflo);
1255 DEBUG(2, " lcol=%-7d more=%d\n",
1256 pstats->lcol, pstats->more);
1257 DEBUG(2, " one=%-7d defer=%d\n",
1258 pstats->one, pstats->defer);
1259 DEBUG(2, " lcar=%-7d rtry=%d\n",
1260 pstats->lcar, pstats->rtry);
1261
1262 /* MACE_XMTRC */
1263 DEBUG(2, " exdef=%-7d xmtrc=%d\n",
1264 pstats->exdef, pstats->xmtrc);
1265
1266 /* RFS1--Receive Status (RCVSTS) */
1267 DEBUG(2, " oflo=%-7d clsn=%d\n",
1268 pstats->oflo, pstats->clsn);
1269 DEBUG(2, " fram=%-7d fcs=%d\n",
1270 pstats->fram, pstats->fcs);
1271
1272 /* RFS2--Runt Packet Count (RNTPC) */
1273 /* RFS3--Receive Collision Count (RCVCC) */
1274 DEBUG(2, " rfs_rntpc=%-7d rfs_rcvcc=%d\n",
1275 pstats->rfs_rntpc, pstats->rfs_rcvcc);
1276
1277 /* MACE_IR */
1278 DEBUG(2, " jab=%-7d babl=%d\n",
1279 pstats->jab, pstats->babl);
1280 DEBUG(2, " cerr=%-7d rcvcco=%d\n",
1281 pstats->cerr, pstats->rcvcco);
1282 DEBUG(2, " rntpco=%-7d mpco=%d\n",
1283 pstats->rntpco, pstats->mpco);
1284
1285 /* MACE_MPC */
1286 DEBUG(2, " mpc=%d\n", pstats->mpc);
1287
1288 /* MACE_RNTPC */
1289 DEBUG(2, " rntpc=%d\n", pstats->rntpc);
1290
1291 /* MACE_RCVCC */
1292 DEBUG(2, " rcvcc=%d\n", pstats->rcvcc);
1293
1294} /* pr_mace_stats */
1295
1296/* ----------------------------------------------------------------------------
1297update_stats
1298 Update statistics. We change to register window 1, so this
1299 should be run single-threaded if the device is active. This is
1300 expected to be a rare operation, and it's simpler for the rest
1301 of the driver to assume that window 0 is always valid rather
1302 than use a special window-state variable.
1303
1304 oflo & uflo should _never_ occur since it would mean the Xilinx
1305 was not able to transfer data between the MACE FIFO and the
1306 card's SRAM fast enough. If this happens, something is
1307 seriously wrong with the hardware.
1308---------------------------------------------------------------------------- */
906da809 1309static void update_stats(unsigned int ioaddr, struct net_device *dev)
1da177e4
LT		 1310{
1311 mace_private *lp = netdev_priv(dev);
1312
1313 lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC);
1314 lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC);
1315 lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC);
1316 /* At this point, mace_stats is fully updated for this call.
1317 We may now update the linux_stats. */
1318
1319 /* The MACE has no equivalent for linux_stats field which are commented
1320 out. */
1321
1322 /* lp->linux_stats.multicast; */
1323 lp->linux_stats.collisions =
1324 lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc;
1325 /* Collision: The MACE may retry sending a packet 15 times
1326 before giving up. The retry count is in XMTRC.
1327 Does each retry constitute a collision?
1328 If so, why doesn't the RCVCC record these collisions? */
1329
1330 /* detailed rx_errors: */
1331 lp->linux_stats.rx_length_errors =
1332 lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc;
1333 /* lp->linux_stats.rx_over_errors */
1334 lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs;
1335 lp->linux_stats.rx_frame_errors = lp->mace_stats.fram;
1336 lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo;
1337 lp->linux_stats.rx_missed_errors =
1338 lp->mace_stats.mpco * 256 + lp->mace_stats.mpc;
1339
1340 /* detailed tx_errors */
1341 lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry;
1342 lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar;
1343 /* LCAR usually results from bad cabling. */
1344 lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo;
1345 lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr;
1346 /* lp->linux_stats.tx_window_errors; */
1347
1348 return;
1349} /* update_stats */
1350
1351/* ----------------------------------------------------------------------------
1352mace_get_stats
1353 Gathers ethernet statistics from the MACE chip.
1354---------------------------------------------------------------------------- */
1355static struct net_device_stats *mace_get_stats(struct net_device *dev)
1356{
1357 mace_private *lp = netdev_priv(dev);
1358
1359 update_stats(dev->base_addr, dev);
1360
1361 DEBUG(1, "%s: updating the statistics.\n", dev->name);
1362 pr_linux_stats(&lp->linux_stats);
1363 pr_mace_stats(&lp->mace_stats);
1364
1365 return &lp->linux_stats;
1366} /* net_device_stats */
1367
1368/* ----------------------------------------------------------------------------
1369updateCRC
1370 Modified from Am79C90 data sheet.
1371---------------------------------------------------------------------------- */
1372
1373#ifdef BROKEN_MULTICAST
1374
1375static void updateCRC(int *CRC, int bit)
1376{
1377 int poly[]={
1378 1,1,1,0, 1,1,0,1,
1379 1,0,1,1, 1,0,0,0,
1380 1,0,0,0, 0,0,1,1,
1381 0,0,1,0, 0,0,0,0
1382 }; /* CRC polynomial. poly[n] = coefficient of the x**n term of the
1383 CRC generator polynomial. */
1384
1385 int j;
1386
1387 /* shift CRC and control bit (CRC[32]) */
1388 for (j = 32; j > 0; j--)
1389 CRC[j] = CRC[j-1];
1390 CRC[0] = 0;
1391
1392 /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */
1393 if (bit ^ CRC[32])
1394 for (j = 0; j < 32; j++)
1395 CRC[j] ^= poly[j];
1396} /* updateCRC */
1397
1398/* ----------------------------------------------------------------------------
1399BuildLAF
1400 Build logical address filter.
1401 Modified from Am79C90 data sheet.
1402
1403Input
1404 ladrf: logical address filter (contents initialized to 0)
1405 adr: ethernet address
1406---------------------------------------------------------------------------- */
1407static void BuildLAF(int *ladrf, int *adr)
1408{
1409 int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */
1410
1411 int i, byte; /* temporary array indices */
1412 int hashcode; /* the output object */
1413
1414 CRC[32]=0;
1415
1416 for (byte = 0; byte < 6; byte++)
1417 for (i = 0; i < 8; i++)
1418 updateCRC(CRC, (adr[byte] >> i) & 1);
1419
1420 hashcode = 0;
1421 for (i = 0; i < 6; i++)
1422 hashcode = (hashcode << 1) + CRC[i];
1423
1424 byte = hashcode >> 3;
1425 ladrf[byte] |= (1 << (hashcode & 7));
1426
1427#ifdef PCMCIA_DEBUG
1428 if (pc_debug > 2) {
1429 printk(KERN_DEBUG " adr =");
1430 for (i = 0; i < 6; i++)
1431 printk(" %02X", adr[i]);
1432 printk("\n" KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63]"
1433 " =", hashcode);
1434 for (i = 0; i < 8; i++)
1435 printk(" %02X", ladrf[i]);
1436 printk("\n");
1437 }
1438#endif
1439} /* BuildLAF */
1440
1441/* ----------------------------------------------------------------------------
1442restore_multicast_list
1443 Restores the multicast filter for MACE chip to the last
1444 set_multicast_list() call.
1445
1446Input
1447 multicast_num_addrs
1448 multicast_ladrf[]
1449---------------------------------------------------------------------------- */
1450static void restore_multicast_list(struct net_device *dev)
1451{
1452 mace_private *lp = netdev_priv(dev);
1453 int num_addrs = lp->multicast_num_addrs;
1454 int *ladrf = lp->multicast_ladrf;
906da809 1455 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 1456 int i;
1457
1458 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n",
1459 dev->name, num_addrs);
1460
1461 if (num_addrs > 0) {
1462
1463 DEBUG(1, "Attempt to restore multicast list detected.\n");
1464
1465 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR);
1466 /* Poll ADDRCHG bit */
1467 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
1468 ;
1469 /* Set LADRF register */
1470 for (i = 0; i < MACE_LADRF_LEN; i++)
1471 mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]);
1472
1473 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL);
1474 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1475
1476 } else if (num_addrs < 0) {
1477
1478 /* Promiscuous mode: receive all packets */
1479 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1480 mace_write(lp, ioaddr, MACE_MACCC,
1481 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1482 );
1483
1484 } else {
1485
1486 /* Normal mode */
1487 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1488 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1489
1490 }
1491} /* restore_multicast_list */
1492
1493/* ----------------------------------------------------------------------------
1494set_multicast_list
1495 Set or clear the multicast filter for this adaptor.
1496
1497Input
1498 num_addrs == -1 Promiscuous mode, receive all packets
1499 num_addrs == 0 Normal mode, clear multicast list
1500 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
1501 best-effort filtering.
1502Output
1503 multicast_num_addrs
1504 multicast_ladrf[]
1505---------------------------------------------------------------------------- */
1506
1507static void set_multicast_list(struct net_device *dev)
1508{
1509 mace_private *lp = netdev_priv(dev);
1510 int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */
1511 int i;
1512 struct dev_mc_list *dmi = dev->mc_list;
1513
1514#ifdef PCMCIA_DEBUG
1515 if (pc_debug > 1) {
1516 static int old;
1517 if (dev->mc_count != old) {
1518 old = dev->mc_count;
1519 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1520 dev->name, old);
1521 }
1522 }
1523#endif
1524
1525 /* Set multicast_num_addrs. */
1526 lp->multicast_num_addrs = dev->mc_count;
1527
1528 /* Set multicast_ladrf. */
1529 if (num_addrs > 0) {
1530 /* Calculate multicast logical address filter */
1531 memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN);
1532 for (i = 0; i < dev->mc_count; i++) {
1533 memcpy(adr, dmi->dmi_addr, ETHER_ADDR_LEN);
1534 dmi = dmi->next;
1535 BuildLAF(lp->multicast_ladrf, adr);
1536 }
1537 }
1538
1539 restore_multicast_list(dev);
1540
1541} /* set_multicast_list */
1542
1543#endif /* BROKEN_MULTICAST */
1544
1545static void restore_multicast_list(struct net_device *dev)
1546{
906da809 1547 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 1548 mace_private *lp = netdev_priv(dev);
1549
1550 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", dev->name,
1551 lp->multicast_num_addrs);
1552
1553 if (dev->flags & IFF_PROMISC) {
1554 /* Promiscuous mode: receive all packets */
1555 mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1556 mace_write(lp, ioaddr, MACE_MACCC,
1557 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1558 );
1559 } else {
1560 /* Normal mode */
1561 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1562 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1563 }
1564} /* restore_multicast_list */
1565
1566static void set_multicast_list(struct net_device *dev)
1567{
1568 mace_private *lp = netdev_priv(dev);
1569
1570#ifdef PCMCIA_DEBUG
1571 if (pc_debug > 1) {
1572 static int old;
1573 if (dev->mc_count != old) {
1574 old = dev->mc_count;
1575 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1576 dev->name, old);
1577 }
1578 }
1579#endif
1580
1581 lp->multicast_num_addrs = dev->mc_count;
1582 restore_multicast_list(dev);
1583
1584} /* set_multicast_list */
1585
a58e26cb
DB		 1586static struct pcmcia_device_id nmclan_ids[] = {
1587 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941),
d277ad0e 1588 PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet+", 0xebf1d60, 0xad673aaf),
a58e26cb
DB		 1589 PCMCIA_DEVICE_NULL,
1590};
1591MODULE_DEVICE_TABLE(pcmcia, nmclan_ids);
1592
1da177e4
LT		 1593static struct pcmcia_driver nmclan_cs_driver = {
1594 .owner = THIS_MODULE,
1595 .drv = {
1596 .name = "nmclan_cs",
1597 },
15b99ac1 1598 .probe = nmclan_probe,
cc3b4866 1599 .remove = nmclan_detach,
a58e26cb 1600 .id_table = nmclan_ids,
98e4c28b
DB		 1601 .suspend = nmclan_suspend,
1602 .resume = nmclan_resume,
1da177e4
LT		 1603};
1604
1605static int __init init_nmclan_cs(void)
1606{
1607 return pcmcia_register_driver(&nmclan_cs_driver);
1608}
1609
1610static void __exit exit_nmclan_cs(void)
1611{
1612 pcmcia_unregister_driver(&nmclan_cs_driver);
1da177e4
LT		 1613}
1614
1615module_init(init_nmclan_cs);
1616module_exit(exit_nmclan_cs);
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