1 /* ----------------------------------------------------------------------------
2 Linux 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
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.
9 Written by Roger C. Pao <rpao@paonet.org>
10 Copyright 1995 Roger C. Pao
11 Linux 2.5 cleanups Copyright Red Hat 2003
13 This software may be used and distributed according to the terms of
14 the GNU General Public License.
16 Ported to Linux 1.3.* network driver environment by
17 Matti Aarnio <mea@utu.fi>
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
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>
34 The Linux client driver is based on the 3c589_cs.c client driver by
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
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.
44 Special thanks for testing and help in debugging this driver goes
47 -------------------------------------------------------------------------------
48 Driver Notes and Issues
49 -------------------------------------------------------------------------------
51 1. 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
55 2. 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.
60 3. If hot extraction does not work for you, use 'ifconfig eth0 down'
63 4. There is a bad slow-down problem in this driver.
65 5. Future: Multicast processing. In the meantime, do _not_ compile your
66 kernel with multicast ip enabled.
68 -------------------------------------------------------------------------------
70 -------------------------------------------------------------------------------
72 * 2.5.75-ac1 2003/07/11 Alan Cox <alan@redhat.com>
73 * Fixed hang on card eject as we probe it
74 * Cleaned up to use new style locking.
76 * Revision 0.16 1995/07/01 06:42:17 rpao
77 * Bug fix: nmclan_reset() called CardServices incorrectly.
79 * Revision 0.15 1995/05/24 08:09:47 rpao
80 * Re-implement MULTI_TX dev->tbusy handling.
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.
87 * Revision 0.13 1995/05/18 05:56:34 rpao
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.
92 * Revision 0.12 1995/05/14 00:12:23 rpao
93 * Statistics overhaul.
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.
101 Multiple transmit request processing.
102 Modified statistics to use MACE counters where possible.
103 95/05/10 rpao V0.09 Bug fix: Must use IO_DATA_PATH_WIDTH_AUTO.
106 Bug fix: Make all non-exported functions private by using
108 Bug fix: Test IntrCnt _before_ reading MACE_IR.
109 95/05/10 rpao V0.07 Statistics.
110 95/05/09 rpao V0.06 Fix rx_framecnt problem by addition of PCIC wait states.
112 ---------------------------------------------------------------------------- */
114 #define DRV_NAME "nmclan_cs"
115 #define DRV_VERSION "0.16"
118 /* ----------------------------------------------------------------------------
119 Conditional Compilation Options
120 ---------------------------------------------------------------------------- */
123 #define RESET_ON_TIMEOUT 1
124 #define TX_INTERRUPTABLE 1
125 #define RESET_XILINX 0
127 /* ----------------------------------------------------------------------------
129 ---------------------------------------------------------------------------- */
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>
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>
155 #include <asm/uaccess.h>
157 #include <asm/system.h>
159 /* ----------------------------------------------------------------------------
161 ---------------------------------------------------------------------------- */
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 */
168 /* Loop Control Defines */
169 #define MACE_MAX_IR_ITERATIONS 10
170 #define MACE_MAX_RX_ITERATIONS 12
172 TBD: Dean brought this up, and I assumed the hardware would
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.
181 The Am2150 has a Xilinx XC3042 field programmable gate array (FPGA)
182 which manages the interface between the MACE and the PCMCIA bus. It
183 also includes buffer management for the 32K x 8 SRAM to control up to
184 four transmit and 12 receive frames at a time.
186 #define AM2150_MAX_TX_FRAMES 4
187 #define AM2150_MAX_RX_FRAMES 12
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
199 #define MACE_RCVFIFO 0
200 #define MACE_XMTFIFO 1
206 #define MACE_FIFOFC 7
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
219 #define MACE_LADRF 20
225 #define MACE_RNTPC 26
226 #define MACE_RCVCC 27
233 #define MACE_XMTRC_EXDEF 0x80
234 #define MACE_XMTRC_XMTRC 0x0F
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
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
251 #define MACE_FIFOFC_RCVFC 0xF0
252 #define MACE_FIFOFC_XMTFC 0x0F
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
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
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
281 #define MACE_IAC_ADDRCHG 0x80
282 #define MACE_IAC_PHYADDR 0x04
283 #define MACE_IAC_LOGADDR 0x02
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
296 /* Switch MACE register bank (only 0 and 1 are valid) */
297 #define MACEBANK(win_num) outb((win_num), ioaddr + AM2150_MACE_BANK)
299 #define MACE_IMR_DEFAULT \
310 #undef MACE_IMR_DEFAULT
311 #define MACE_IMR_DEFAULT 0x00 /* New statistics handling: grab everything */
313 #define TX_TIMEOUT ((400*HZ)/1000)
315 /* ----------------------------------------------------------------------------
317 ---------------------------------------------------------------------------- */
319 typedef struct _mace_statistics {
334 /* RFS1--Receive Status (RCVSTS) */
340 /* RFS2--Runt Packet Count (RNTPC) */
343 /* RFS3--Receive Collision Count (RCVCC) */
364 typedef struct _mace_private {
365 struct pcmcia_device *p_dev;
367 struct net_device_stats linux_stats; /* Linux statistics counters */
368 mace_statistics mace_stats; /* MACE chip statistics counters */
370 /* restore_multicast_list() state variables */
371 int multicast_ladrf[MACE_LADRF_LEN]; /* Logical address filter */
372 int multicast_num_addrs;
374 char tx_free_frames; /* Number of free transmit frame buffers */
375 char tx_irq_disabled; /* MACE TX interrupt disabled */
377 spinlock_t bank_lock; /* Must be held if you step off bank 0 */
380 /* ----------------------------------------------------------------------------
381 Private Global Variables
382 ---------------------------------------------------------------------------- */
385 static char rcsid[] =
386 "nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao";
387 static char *version =
388 DRV_NAME " " DRV_VERSION " (Roger C. Pao)";
391 static const char *if_names[]={
392 "Auto", "10baseT", "BNC",
395 /* ----------------------------------------------------------------------------
397 These are the parameters that can be set during loading with
399 ---------------------------------------------------------------------------- */
401 MODULE_DESCRIPTION("New Media PCMCIA ethernet driver");
402 MODULE_LICENSE("GPL");
404 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
406 /* 0=auto, 1=10baseT, 2 = 10base2, default=auto */
407 INT_MODULE_PARM(if_port, 0);
410 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
411 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
413 #define DEBUG(n, args...)
416 /* ----------------------------------------------------------------------------
418 ---------------------------------------------------------------------------- */
420 static int nmclan_config(struct pcmcia_device *link);
421 static void nmclan_release(struct pcmcia_device *link);
423 static void nmclan_reset(struct net_device *dev);
424 static int mace_config(struct net_device *dev, struct ifmap *map);
425 static int mace_open(struct net_device *dev);
426 static int mace_close(struct net_device *dev);
427 static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev);
428 static void mace_tx_timeout(struct net_device *dev);
429 static irqreturn_t mace_interrupt(int irq, void *dev_id, struct pt_regs *regs);
430 static struct net_device_stats *mace_get_stats(struct net_device *dev);
431 static int mace_rx(struct net_device *dev, unsigned char RxCnt);
432 static void restore_multicast_list(struct net_device *dev);
433 static void set_multicast_list(struct net_device *dev);
434 static struct ethtool_ops netdev_ethtool_ops;
437 static void nmclan_detach(struct pcmcia_device *p_dev);
439 /* ----------------------------------------------------------------------------
441 Creates an "instance" of the driver, allocating local data
442 structures for one device. The device is registered with Card
444 ---------------------------------------------------------------------------- */
446 static int nmclan_probe(struct pcmcia_device *link)
449 struct net_device *dev;
451 DEBUG(0, "nmclan_attach()\n");
452 DEBUG(1, "%s\n", rcsid);
454 /* Create new ethernet device */
455 dev = alloc_etherdev(sizeof(mace_private));
458 lp = netdev_priv(dev);
462 spin_lock_init(&lp->bank_lock);
463 link->io.NumPorts1 = 32;
464 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
465 link->io.IOAddrLines = 5;
466 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
467 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
468 link->irq.Handler = &mace_interrupt;
469 link->irq.Instance = dev;
470 link->conf.Attributes = CONF_ENABLE_IRQ;
471 link->conf.IntType = INT_MEMORY_AND_IO;
472 link->conf.ConfigIndex = 1;
473 link->conf.Present = PRESENT_OPTION;
475 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
477 SET_MODULE_OWNER(dev);
478 dev->hard_start_xmit = &mace_start_xmit;
479 dev->set_config = &mace_config;
480 dev->get_stats = &mace_get_stats;
481 dev->set_multicast_list = &set_multicast_list;
482 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
483 dev->open = &mace_open;
484 dev->stop = &mace_close;
485 #ifdef HAVE_TX_TIMEOUT
486 dev->tx_timeout = mace_tx_timeout;
487 dev->watchdog_timeo = TX_TIMEOUT;
490 return nmclan_config(link);
491 } /* nmclan_attach */
493 /* ----------------------------------------------------------------------------
495 This deletes a driver "instance". The device is de-registered
496 with Card Services. If it has been released, all local data
497 structures are freed. Otherwise, the structures will be freed
498 when the device is released.
499 ---------------------------------------------------------------------------- */
501 static void nmclan_detach(struct pcmcia_device *link)
503 struct net_device *dev = link->priv;
505 DEBUG(0, "nmclan_detach(0x%p)\n", link);
508 unregister_netdev(dev);
510 nmclan_release(link);
513 } /* nmclan_detach */
515 /* ----------------------------------------------------------------------------
517 Reads a MACE register. This is bank independent; however, the
518 caller must ensure that this call is not interruptable. We are
519 assuming that during normal operation, the MACE is always in
521 ---------------------------------------------------------------------------- */
522 static int mace_read(mace_private *lp, kio_addr_t ioaddr, int reg)
528 case 0: /* register 0-15 */
529 data = inb(ioaddr + AM2150_MACE_BASE + reg);
531 case 1: /* register 16-31 */
532 spin_lock_irqsave(&lp->bank_lock, flags);
534 data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
536 spin_unlock_irqrestore(&lp->bank_lock, flags);
539 return (data & 0xFF);
542 /* ----------------------------------------------------------------------------
544 Writes to a MACE register. This is bank independent; however,
545 the caller must ensure that this call is not interruptable. We
546 are assuming that during normal operation, the MACE is always in
548 ---------------------------------------------------------------------------- */
549 static void mace_write(mace_private *lp, kio_addr_t ioaddr, int reg, int data)
554 case 0: /* register 0-15 */
555 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg);
557 case 1: /* register 16-31 */
558 spin_lock_irqsave(&lp->bank_lock, flags);
560 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
562 spin_unlock_irqrestore(&lp->bank_lock, flags);
567 /* ----------------------------------------------------------------------------
569 Resets the MACE chip.
570 ---------------------------------------------------------------------------- */
571 static int mace_init(mace_private *lp, kio_addr_t ioaddr, char *enet_addr)
576 /* MACE Software reset */
577 mace_write(lp, ioaddr, MACE_BIUCC, 1);
578 while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) {
579 /* Wait for reset bit to be cleared automatically after <= 200ns */;
582 printk(KERN_ERR "mace: reset failed, card removed ?\n");
587 mace_write(lp, ioaddr, MACE_BIUCC, 0);
589 /* The Am2150 requires that the MACE FIFOs operate in burst mode. */
590 mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F);
592 mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */
593 mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */
596 * Bit 2-1 PORTSEL[1-0] Port Select.
599 * 10 DAI Port (reserved in Am2150)
601 * For this card, only the first two are valid.
602 * So, PLSCC should be set to
605 * Or just set ASEL in PHYCC below!
609 mace_write(lp, ioaddr, MACE_PLSCC, 0x02);
612 mace_write(lp, ioaddr, MACE_PLSCC, 0x00);
615 mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4);
616 /* ASEL Auto Select. When set, the PORTSEL[1-0] bits are overridden,
617 and the MACE device will automatically select the operating media
622 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR);
623 /* Poll ADDRCHG bit */
625 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
629 printk(KERN_ERR "mace: ADDRCHG timeout, card removed ?\n");
633 /* Set PADR register */
634 for (i = 0; i < ETHER_ADDR_LEN; i++)
635 mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]);
637 /* MAC Configuration Control Register should be written last */
638 /* Let set_multicast_list set this. */
639 /* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */
640 mace_write(lp, ioaddr, MACE_MACCC, 0x00);
644 /* ----------------------------------------------------------------------------
646 This routine is scheduled to run after a CARD_INSERTION event
647 is received, to configure the PCMCIA socket, and to make the
648 ethernet device available to the system.
649 ---------------------------------------------------------------------------- */
651 #define CS_CHECK(fn, ret) \
652 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
654 static int nmclan_config(struct pcmcia_device *link)
656 struct net_device *dev = link->priv;
657 mace_private *lp = netdev_priv(dev);
661 int i, last_ret, last_fn;
664 DEBUG(0, "nmclan_config(0x%p)\n", link);
666 tuple.Attributes = 0;
667 tuple.TupleData = buf;
668 tuple.TupleDataMax = 64;
669 tuple.TupleOffset = 0;
670 tuple.DesiredTuple = CISTPL_CONFIG;
671 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
672 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
673 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
674 link->conf.ConfigBase = parse.config.base;
676 CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
677 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
678 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
679 dev->irq = link->irq.AssignedIRQ;
680 dev->base_addr = link->io.BasePort1;
682 ioaddr = dev->base_addr;
684 /* Read the ethernet address from the CIS. */
685 tuple.DesiredTuple = 0x80 /* CISTPL_CFTABLE_ENTRY_MISC */;
686 tuple.TupleData = buf;
687 tuple.TupleDataMax = 64;
688 tuple.TupleOffset = 0;
689 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
690 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
691 memcpy(dev->dev_addr, tuple.TupleData, ETHER_ADDR_LEN);
693 /* Verify configuration by reading the MACE ID. */
697 sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL);
698 sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH);
699 if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) {
700 DEBUG(0, "nmclan_cs configured: mace id=%x %x\n",
703 printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should"
704 " be 0x40 0x?9\n", sig[0], sig[1]);
709 if(mace_init(lp, ioaddr, dev->dev_addr) == -1)
712 /* The if_port symbol can be set when the module is loaded */
714 dev->if_port = if_port;
716 printk(KERN_NOTICE "nmclan_cs: invalid if_port requested\n");
718 link->dev_node = &lp->node;
719 SET_NETDEV_DEV(dev, &handle_to_dev(link));
721 i = register_netdev(dev);
723 printk(KERN_NOTICE "nmclan_cs: register_netdev() failed\n");
724 link->dev_node = NULL;
728 strcpy(lp->node.dev_name, dev->name);
730 printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port, hw_addr ",
731 dev->name, dev->base_addr, dev->irq, if_names[dev->if_port]);
732 for (i = 0; i < 6; i++)
733 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
737 cs_error(link, last_fn, last_ret);
739 nmclan_release(link);
741 } /* nmclan_config */
743 /* ----------------------------------------------------------------------------
745 After a card is removed, nmclan_release() will unregister the
746 net device, and release the PCMCIA configuration. If the device
747 is still open, this will be postponed until it is closed.
748 ---------------------------------------------------------------------------- */
749 static void nmclan_release(struct pcmcia_device *link)
751 DEBUG(0, "nmclan_release(0x%p)\n", link);
752 pcmcia_disable_device(link);
755 static int nmclan_suspend(struct pcmcia_device *link)
757 struct net_device *dev = link->priv;
760 netif_device_detach(dev);
765 static int nmclan_resume(struct pcmcia_device *link)
767 struct net_device *dev = link->priv;
771 netif_device_attach(dev);
778 /* ----------------------------------------------------------------------------
780 Reset and restore all of the Xilinx and MACE registers.
781 ---------------------------------------------------------------------------- */
782 static void nmclan_reset(struct net_device *dev)
784 mace_private *lp = netdev_priv(dev);
787 struct pcmcia_device *link = &lp->link;
791 /* Save original COR value */
793 reg.Action = CS_READ;
794 reg.Offset = CISREG_COR;
796 pcmcia_access_configuration_register(link, ®);
797 OrigCorValue = reg.Value;
800 reg.Action = CS_WRITE;
801 reg.Offset = CISREG_COR;
802 DEBUG(1, "nmclan_reset: OrigCorValue=0x%lX, resetting...\n",
804 reg.Value = COR_SOFT_RESET;
805 pcmcia_access_configuration_register(link, ®);
806 /* Need to wait for 20 ms for PCMCIA to finish reset. */
808 /* Restore original COR configuration index */
809 reg.Value = COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK);
810 pcmcia_access_configuration_register(link, ®);
811 /* Xilinx is now completely reset along with the MACE chip. */
812 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
814 #endif /* #if RESET_XILINX */
816 /* Xilinx is now completely reset along with the MACE chip. */
817 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
819 /* Reinitialize the MACE chip for operation. */
820 mace_init(lp, dev->base_addr, dev->dev_addr);
821 mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT);
823 /* Restore the multicast list and enable TX and RX. */
824 restore_multicast_list(dev);
827 /* ----------------------------------------------------------------------------
829 [Someone tell me what this is supposed to do? Is if_port a defined
830 standard? If so, there should be defines to indicate 1=10Base-T,
831 2=10Base-2, etc. including limited automatic detection.]
832 ---------------------------------------------------------------------------- */
833 static int mace_config(struct net_device *dev, struct ifmap *map)
835 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
836 if (map->port <= 2) {
837 dev->if_port = map->port;
838 printk(KERN_INFO "%s: switched to %s port\n", dev->name,
839 if_names[dev->if_port]);
846 /* ----------------------------------------------------------------------------
849 ---------------------------------------------------------------------------- */
850 static int mace_open(struct net_device *dev)
852 kio_addr_t ioaddr = dev->base_addr;
853 mace_private *lp = netdev_priv(dev);
854 struct pcmcia_device *link = lp->p_dev;
856 if (!pcmcia_dev_present(link))
863 netif_start_queue(dev);
866 return 0; /* Always succeed */
869 /* ----------------------------------------------------------------------------
871 Closes device driver.
872 ---------------------------------------------------------------------------- */
873 static int mace_close(struct net_device *dev)
875 kio_addr_t ioaddr = dev->base_addr;
876 mace_private *lp = netdev_priv(dev);
877 struct pcmcia_device *link = lp->p_dev;
879 DEBUG(2, "%s: shutting down ethercard.\n", dev->name);
881 /* Mask off all interrupts from the MACE chip. */
882 outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR);
885 netif_stop_queue(dev);
890 static void netdev_get_drvinfo(struct net_device *dev,
891 struct ethtool_drvinfo *info)
893 strcpy(info->driver, DRV_NAME);
894 strcpy(info->version, DRV_VERSION);
895 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
899 static u32 netdev_get_msglevel(struct net_device *dev)
904 static void netdev_set_msglevel(struct net_device *dev, u32 level)
908 #endif /* PCMCIA_DEBUG */
910 static struct ethtool_ops netdev_ethtool_ops = {
911 .get_drvinfo = netdev_get_drvinfo,
913 .get_msglevel = netdev_get_msglevel,
914 .set_msglevel = netdev_set_msglevel,
915 #endif /* PCMCIA_DEBUG */
918 /* ----------------------------------------------------------------------------
920 This routine begins the packet transmit function. When completed,
921 it will generate a transmit interrupt.
923 According to /usr/src/linux/net/inet/dev.c, if _start_xmit
924 returns 0, the "packet is now solely the responsibility of the
925 driver." If _start_xmit returns non-zero, the "transmission
926 failed, put skb back into a list."
927 ---------------------------------------------------------------------------- */
929 static void mace_tx_timeout(struct net_device *dev)
931 mace_private *lp = netdev_priv(dev);
932 struct pcmcia_device *link = lp->p_dev;
934 printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name);
936 printk("resetting card\n");
937 pcmcia_reset_card(link, NULL);
938 #else /* #if RESET_ON_TIMEOUT */
939 printk("NOT resetting card\n");
940 #endif /* #if RESET_ON_TIMEOUT */
941 dev->trans_start = jiffies;
942 netif_wake_queue(dev);
945 static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev)
947 mace_private *lp = netdev_priv(dev);
948 kio_addr_t ioaddr = dev->base_addr;
950 netif_stop_queue(dev);
952 DEBUG(3, "%s: mace_start_xmit(length = %ld) called.\n",
953 dev->name, (long)skb->len);
955 #if (!TX_INTERRUPTABLE)
956 /* Disable MACE TX interrupts. */
957 outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT,
958 ioaddr + AM2150_MACE_BASE + MACE_IMR);
959 lp->tx_irq_disabled=1;
960 #endif /* #if (!TX_INTERRUPTABLE) */
963 /* This block must not be interrupted by another transmit request!
964 mace_tx_timeout will take care of timer-based retransmissions from
965 the upper layers. The interrupt handler is guaranteed never to
966 service a transmit interrupt while we are in here.
969 lp->linux_stats.tx_bytes += skb->len;
970 lp->tx_free_frames--;
972 /* WARNING: Write the _exact_ number of bytes written in the header! */
973 /* Put out the word header [must be an outw()] . . . */
974 outw(skb->len, ioaddr + AM2150_XMT);
975 /* . . . and the packet [may be any combination of outw() and outb()] */
976 outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1);
978 /* Odd byte transfer */
979 outb(skb->data[skb->len-1], ioaddr + AM2150_XMT);
982 dev->trans_start = jiffies;
985 if (lp->tx_free_frames > 0)
986 netif_start_queue(dev);
987 #endif /* #if MULTI_TX */
990 #if (!TX_INTERRUPTABLE)
991 /* Re-enable MACE TX interrupts. */
992 lp->tx_irq_disabled=0;
993 outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR);
994 #endif /* #if (!TX_INTERRUPTABLE) */
999 } /* mace_start_xmit */
1001 /* ----------------------------------------------------------------------------
1003 The interrupt handler.
1004 ---------------------------------------------------------------------------- */
1005 static irqreturn_t mace_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1007 struct net_device *dev = (struct net_device *) dev_id;
1008 mace_private *lp = netdev_priv(dev);
1009 kio_addr_t ioaddr = dev->base_addr;
1011 int IntrCnt = MACE_MAX_IR_ITERATIONS;
1014 DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.\n",
1019 if (lp->tx_irq_disabled) {
1021 (lp->tx_irq_disabled?
1022 KERN_NOTICE "%s: Interrupt with tx_irq_disabled "
1023 "[isr=%02X, imr=%02X]\n":
1024 KERN_NOTICE "%s: Re-entering the interrupt handler "
1025 "[isr=%02X, imr=%02X]\n"),
1027 inb(ioaddr + AM2150_MACE_BASE + MACE_IR),
1028 inb(ioaddr + AM2150_MACE_BASE + MACE_IMR)
1030 /* WARNING: MACE_IR has been read! */
1034 if (!netif_device_present(dev)) {
1035 DEBUG(2, "%s: interrupt from dead card\n", dev->name);
1040 /* WARNING: MACE_IR is a READ/CLEAR port! */
1041 status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR);
1043 DEBUG(3, "mace_interrupt: irq 0x%X status 0x%X.\n", irq, status);
1045 if (status & MACE_IR_RCVINT) {
1046 mace_rx(dev, MACE_MAX_RX_ITERATIONS);
1049 if (status & MACE_IR_XMTINT) {
1050 unsigned char fifofc;
1051 unsigned char xmtrc;
1052 unsigned char xmtfs;
1054 fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC);
1055 if ((fifofc & MACE_FIFOFC_XMTFC)==0) {
1056 lp->linux_stats.tx_errors++;
1057 outb(0xFF, ioaddr + AM2150_XMT_SKIP);
1060 /* Transmit Retry Count (XMTRC, reg 4) */
1061 xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC);
1062 if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++;
1063 lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC);
1066 (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) &
1067 MACE_XMTFS_XMTSV /* Transmit Status Valid */
1069 lp->mace_stats.xmtsv++;
1071 if (xmtfs & ~MACE_XMTFS_XMTSV) {
1072 if (xmtfs & MACE_XMTFS_UFLO) {
1073 /* Underflow. Indicates that the Transmit FIFO emptied before
1074 the end of frame was reached. */
1075 lp->mace_stats.uflo++;
1077 if (xmtfs & MACE_XMTFS_LCOL) {
1078 /* Late Collision */
1079 lp->mace_stats.lcol++;
1081 if (xmtfs & MACE_XMTFS_MORE) {
1082 /* MORE than one retry was needed */
1083 lp->mace_stats.more++;
1085 if (xmtfs & MACE_XMTFS_ONE) {
1086 /* Exactly ONE retry occurred */
1087 lp->mace_stats.one++;
1089 if (xmtfs & MACE_XMTFS_DEFER) {
1090 /* Transmission was defered */
1091 lp->mace_stats.defer++;
1093 if (xmtfs & MACE_XMTFS_LCAR) {
1094 /* Loss of carrier */
1095 lp->mace_stats.lcar++;
1097 if (xmtfs & MACE_XMTFS_RTRY) {
1098 /* Retry error: transmit aborted after 16 attempts */
1099 lp->mace_stats.rtry++;
1101 } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */
1103 } /* if (xmtfs & MACE_XMTFS_XMTSV) */
1105 lp->linux_stats.tx_packets++;
1106 lp->tx_free_frames++;
1107 netif_wake_queue(dev);
1108 } /* if (status & MACE_IR_XMTINT) */
1110 if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) {
1111 if (status & MACE_IR_JAB) {
1112 /* Jabber Error. Excessive transmit duration (20-150ms). */
1113 lp->mace_stats.jab++;
1115 if (status & MACE_IR_BABL) {
1116 /* Babble Error. >1518 bytes transmitted. */
1117 lp->mace_stats.babl++;
1119 if (status & MACE_IR_CERR) {
1120 /* Collision Error. CERR indicates the absence of the
1121 Signal Quality Error Test message after a packet
1123 lp->mace_stats.cerr++;
1125 if (status & MACE_IR_RCVCCO) {
1126 /* Receive Collision Count Overflow; */
1127 lp->mace_stats.rcvcco++;
1129 if (status & MACE_IR_RNTPCO) {
1130 /* Runt Packet Count Overflow */
1131 lp->mace_stats.rntpco++;
1133 if (status & MACE_IR_MPCO) {
1134 /* Missed Packet Count Overflow */
1135 lp->mace_stats.mpco++;
1137 } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */
1139 } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt));
1142 } /* mace_interrupt */
1144 /* ----------------------------------------------------------------------------
1147 ---------------------------------------------------------------------------- */
1148 static int mace_rx(struct net_device *dev, unsigned char RxCnt)
1150 mace_private *lp = netdev_priv(dev);
1151 kio_addr_t ioaddr = dev->base_addr;
1152 unsigned char rx_framecnt;
1153 unsigned short rx_status;
1156 ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) &&
1157 (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */
1160 rx_status = inw(ioaddr + AM2150_RCV);
1162 DEBUG(3, "%s: in mace_rx(), framecnt 0x%X, rx_status"
1163 " 0x%X.\n", dev->name, rx_framecnt, rx_status);
1165 if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */
1166 lp->linux_stats.rx_errors++;
1167 if (rx_status & MACE_RCVFS_OFLO) {
1168 lp->mace_stats.oflo++;
1170 if (rx_status & MACE_RCVFS_CLSN) {
1171 lp->mace_stats.clsn++;
1173 if (rx_status & MACE_RCVFS_FRAM) {
1174 lp->mace_stats.fram++;
1176 if (rx_status & MACE_RCVFS_FCS) {
1177 lp->mace_stats.fcs++;
1180 short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4;
1181 /* Auto Strip is off, always subtract 4 */
1182 struct sk_buff *skb;
1184 lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV);
1185 /* runt packet count */
1186 lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV);
1187 /* rcv collision count */
1189 DEBUG(3, " receiving packet size 0x%X rx_status"
1190 " 0x%X.\n", pkt_len, rx_status);
1192 skb = dev_alloc_skb(pkt_len+2);
1197 skb_reserve(skb, 2);
1198 insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1);
1200 *(skb->tail-1) = inb(ioaddr + AM2150_RCV);
1201 skb->protocol = eth_type_trans(skb, dev);
1203 netif_rx(skb); /* Send the packet to the upper (protocol) layers. */
1205 dev->last_rx = jiffies;
1206 lp->linux_stats.rx_packets++;
1207 lp->linux_stats.rx_bytes += pkt_len;
1208 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1211 DEBUG(1, "%s: couldn't allocate a sk_buff of size"
1212 " %d.\n", dev->name, pkt_len);
1213 lp->linux_stats.rx_dropped++;
1216 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1222 /* ----------------------------------------------------------------------------
1224 ---------------------------------------------------------------------------- */
1225 static void pr_linux_stats(struct net_device_stats *pstats)
1227 DEBUG(2, "pr_linux_stats\n");
1228 DEBUG(2, " rx_packets=%-7ld tx_packets=%ld\n",
1229 (long)pstats->rx_packets, (long)pstats->tx_packets);
1230 DEBUG(2, " rx_errors=%-7ld tx_errors=%ld\n",
1231 (long)pstats->rx_errors, (long)pstats->tx_errors);
1232 DEBUG(2, " rx_dropped=%-7ld tx_dropped=%ld\n",
1233 (long)pstats->rx_dropped, (long)pstats->tx_dropped);
1234 DEBUG(2, " multicast=%-7ld collisions=%ld\n",
1235 (long)pstats->multicast, (long)pstats->collisions);
1237 DEBUG(2, " rx_length_errors=%-7ld rx_over_errors=%ld\n",
1238 (long)pstats->rx_length_errors, (long)pstats->rx_over_errors);
1239 DEBUG(2, " rx_crc_errors=%-7ld rx_frame_errors=%ld\n",
1240 (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors);
1241 DEBUG(2, " rx_fifo_errors=%-7ld rx_missed_errors=%ld\n",
1242 (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors);
1244 DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n",
1245 (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors);
1246 DEBUG(2, " tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n",
1247 (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors);
1248 DEBUG(2, " tx_window_errors=%ld\n",
1249 (long)pstats->tx_window_errors);
1250 } /* pr_linux_stats */
1252 /* ----------------------------------------------------------------------------
1254 ---------------------------------------------------------------------------- */
1255 static void pr_mace_stats(mace_statistics *pstats)
1257 DEBUG(2, "pr_mace_stats\n");
1259 DEBUG(2, " xmtsv=%-7d uflo=%d\n",
1260 pstats->xmtsv, pstats->uflo);
1261 DEBUG(2, " lcol=%-7d more=%d\n",
1262 pstats->lcol, pstats->more);
1263 DEBUG(2, " one=%-7d defer=%d\n",
1264 pstats->one, pstats->defer);
1265 DEBUG(2, " lcar=%-7d rtry=%d\n",
1266 pstats->lcar, pstats->rtry);
1269 DEBUG(2, " exdef=%-7d xmtrc=%d\n",
1270 pstats->exdef, pstats->xmtrc);
1272 /* RFS1--Receive Status (RCVSTS) */
1273 DEBUG(2, " oflo=%-7d clsn=%d\n",
1274 pstats->oflo, pstats->clsn);
1275 DEBUG(2, " fram=%-7d fcs=%d\n",
1276 pstats->fram, pstats->fcs);
1278 /* RFS2--Runt Packet Count (RNTPC) */
1279 /* RFS3--Receive Collision Count (RCVCC) */
1280 DEBUG(2, " rfs_rntpc=%-7d rfs_rcvcc=%d\n",
1281 pstats->rfs_rntpc, pstats->rfs_rcvcc);
1284 DEBUG(2, " jab=%-7d babl=%d\n",
1285 pstats->jab, pstats->babl);
1286 DEBUG(2, " cerr=%-7d rcvcco=%d\n",
1287 pstats->cerr, pstats->rcvcco);
1288 DEBUG(2, " rntpco=%-7d mpco=%d\n",
1289 pstats->rntpco, pstats->mpco);
1292 DEBUG(2, " mpc=%d\n", pstats->mpc);
1295 DEBUG(2, " rntpc=%d\n", pstats->rntpc);
1298 DEBUG(2, " rcvcc=%d\n", pstats->rcvcc);
1300 } /* pr_mace_stats */
1302 /* ----------------------------------------------------------------------------
1304 Update statistics. We change to register window 1, so this
1305 should be run single-threaded if the device is active. This is
1306 expected to be a rare operation, and it's simpler for the rest
1307 of the driver to assume that window 0 is always valid rather
1308 than use a special window-state variable.
1310 oflo & uflo should _never_ occur since it would mean the Xilinx
1311 was not able to transfer data between the MACE FIFO and the
1312 card's SRAM fast enough. If this happens, something is
1313 seriously wrong with the hardware.
1314 ---------------------------------------------------------------------------- */
1315 static void update_stats(kio_addr_t ioaddr, struct net_device *dev)
1317 mace_private *lp = netdev_priv(dev);
1319 lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC);
1320 lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC);
1321 lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC);
1322 /* At this point, mace_stats is fully updated for this call.
1323 We may now update the linux_stats. */
1325 /* The MACE has no equivalent for linux_stats field which are commented
1328 /* lp->linux_stats.multicast; */
1329 lp->linux_stats.collisions =
1330 lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc;
1331 /* Collision: The MACE may retry sending a packet 15 times
1332 before giving up. The retry count is in XMTRC.
1333 Does each retry constitute a collision?
1334 If so, why doesn't the RCVCC record these collisions? */
1336 /* detailed rx_errors: */
1337 lp->linux_stats.rx_length_errors =
1338 lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc;
1339 /* lp->linux_stats.rx_over_errors */
1340 lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs;
1341 lp->linux_stats.rx_frame_errors = lp->mace_stats.fram;
1342 lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo;
1343 lp->linux_stats.rx_missed_errors =
1344 lp->mace_stats.mpco * 256 + lp->mace_stats.mpc;
1346 /* detailed tx_errors */
1347 lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry;
1348 lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar;
1349 /* LCAR usually results from bad cabling. */
1350 lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo;
1351 lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr;
1352 /* lp->linux_stats.tx_window_errors; */
1355 } /* update_stats */
1357 /* ----------------------------------------------------------------------------
1359 Gathers ethernet statistics from the MACE chip.
1360 ---------------------------------------------------------------------------- */
1361 static struct net_device_stats *mace_get_stats(struct net_device *dev)
1363 mace_private *lp = netdev_priv(dev);
1365 update_stats(dev->base_addr, dev);
1367 DEBUG(1, "%s: updating the statistics.\n", dev->name);
1368 pr_linux_stats(&lp->linux_stats);
1369 pr_mace_stats(&lp->mace_stats);
1371 return &lp->linux_stats;
1372 } /* net_device_stats */
1374 /* ----------------------------------------------------------------------------
1376 Modified from Am79C90 data sheet.
1377 ---------------------------------------------------------------------------- */
1379 #ifdef BROKEN_MULTICAST
1381 static void updateCRC(int *CRC, int bit)
1388 }; /* CRC polynomial. poly[n] = coefficient of the x**n term of the
1389 CRC generator polynomial. */
1393 /* shift CRC and control bit (CRC[32]) */
1394 for (j = 32; j > 0; j--)
1398 /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */
1400 for (j = 0; j < 32; j++)
1404 /* ----------------------------------------------------------------------------
1406 Build logical address filter.
1407 Modified from Am79C90 data sheet.
1410 ladrf: logical address filter (contents initialized to 0)
1411 adr: ethernet address
1412 ---------------------------------------------------------------------------- */
1413 static void BuildLAF(int *ladrf, int *adr)
1415 int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */
1417 int i, byte; /* temporary array indices */
1418 int hashcode; /* the output object */
1422 for (byte = 0; byte < 6; byte++)
1423 for (i = 0; i < 8; i++)
1424 updateCRC(CRC, (adr[byte] >> i) & 1);
1427 for (i = 0; i < 6; i++)
1428 hashcode = (hashcode << 1) + CRC[i];
1430 byte = hashcode >> 3;
1431 ladrf[byte] |= (1 << (hashcode & 7));
1435 printk(KERN_DEBUG " adr =");
1436 for (i = 0; i < 6; i++)
1437 printk(" %02X", adr[i]);
1438 printk("\n" KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63]"
1440 for (i = 0; i < 8; i++)
1441 printk(" %02X", ladrf[i]);
1447 /* ----------------------------------------------------------------------------
1448 restore_multicast_list
1449 Restores the multicast filter for MACE chip to the last
1450 set_multicast_list() call.
1455 ---------------------------------------------------------------------------- */
1456 static void restore_multicast_list(struct net_device *dev)
1458 mace_private *lp = netdev_priv(dev);
1459 int num_addrs = lp->multicast_num_addrs;
1460 int *ladrf = lp->multicast_ladrf;
1461 kio_addr_t ioaddr = dev->base_addr;
1464 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n",
1465 dev->name, num_addrs);
1467 if (num_addrs > 0) {
1469 DEBUG(1, "Attempt to restore multicast list detected.\n");
1471 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR);
1472 /* Poll ADDRCHG bit */
1473 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
1475 /* Set LADRF register */
1476 for (i = 0; i < MACE_LADRF_LEN; i++)
1477 mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]);
1479 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL);
1480 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1482 } else if (num_addrs < 0) {
1484 /* Promiscuous mode: receive all packets */
1485 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1486 mace_write(lp, ioaddr, MACE_MACCC,
1487 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1493 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1494 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1497 } /* restore_multicast_list */
1499 /* ----------------------------------------------------------------------------
1501 Set or clear the multicast filter for this adaptor.
1504 num_addrs == -1 Promiscuous mode, receive all packets
1505 num_addrs == 0 Normal mode, clear multicast list
1506 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
1507 best-effort filtering.
1511 ---------------------------------------------------------------------------- */
1513 static void set_multicast_list(struct net_device *dev)
1515 mace_private *lp = netdev_priv(dev);
1516 int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */
1518 struct dev_mc_list *dmi = dev->mc_list;
1523 if (dev->mc_count != old) {
1524 old = dev->mc_count;
1525 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1531 /* Set multicast_num_addrs. */
1532 lp->multicast_num_addrs = dev->mc_count;
1534 /* Set multicast_ladrf. */
1535 if (num_addrs > 0) {
1536 /* Calculate multicast logical address filter */
1537 memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN);
1538 for (i = 0; i < dev->mc_count; i++) {
1539 memcpy(adr, dmi->dmi_addr, ETHER_ADDR_LEN);
1541 BuildLAF(lp->multicast_ladrf, adr);
1545 restore_multicast_list(dev);
1547 } /* set_multicast_list */
1549 #endif /* BROKEN_MULTICAST */
1551 static void restore_multicast_list(struct net_device *dev)
1553 kio_addr_t ioaddr = dev->base_addr;
1554 mace_private *lp = netdev_priv(dev);
1556 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", dev->name,
1557 lp->multicast_num_addrs);
1559 if (dev->flags & IFF_PROMISC) {
1560 /* Promiscuous mode: receive all packets */
1561 mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1562 mace_write(lp, ioaddr, MACE_MACCC,
1563 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1567 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1568 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1570 } /* restore_multicast_list */
1572 static void set_multicast_list(struct net_device *dev)
1574 mace_private *lp = netdev_priv(dev);
1579 if (dev->mc_count != old) {
1580 old = dev->mc_count;
1581 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1587 lp->multicast_num_addrs = dev->mc_count;
1588 restore_multicast_list(dev);
1590 } /* set_multicast_list */
1592 static struct pcmcia_device_id nmclan_ids[] = {
1593 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941),
1594 PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet+", 0xebf1d60, 0xad673aaf),
1597 MODULE_DEVICE_TABLE(pcmcia, nmclan_ids);
1599 static struct pcmcia_driver nmclan_cs_driver = {
1600 .owner = THIS_MODULE,
1602 .name = "nmclan_cs",
1604 .probe = nmclan_probe,
1605 .remove = nmclan_detach,
1606 .id_table = nmclan_ids,
1607 .suspend = nmclan_suspend,
1608 .resume = nmclan_resume,
1611 static int __init init_nmclan_cs(void)
1613 return pcmcia_register_driver(&nmclan_cs_driver);
1616 static void __exit exit_nmclan_cs(void)
1618 pcmcia_unregister_driver(&nmclan_cs_driver);
1621 module_init(init_nmclan_cs);
1622 module_exit(exit_nmclan_cs);