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);
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 const 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 dev->hard_start_xmit = &mace_start_xmit;
478 dev->set_config = &mace_config;
479 dev->get_stats = &mace_get_stats;
480 dev->set_multicast_list = &set_multicast_list;
481 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
482 dev->open = &mace_open;
483 dev->stop = &mace_close;
484 #ifdef HAVE_TX_TIMEOUT
485 dev->tx_timeout = mace_tx_timeout;
486 dev->watchdog_timeo = TX_TIMEOUT;
489 return nmclan_config(link);
490 } /* nmclan_attach */
492 /* ----------------------------------------------------------------------------
494 This deletes a driver "instance". The device is de-registered
495 with Card Services. If it has been released, all local data
496 structures are freed. Otherwise, the structures will be freed
497 when the device is released.
498 ---------------------------------------------------------------------------- */
500 static void nmclan_detach(struct pcmcia_device *link)
502 struct net_device *dev = link->priv;
504 DEBUG(0, "nmclan_detach(0x%p)\n", link);
507 unregister_netdev(dev);
509 nmclan_release(link);
512 } /* nmclan_detach */
514 /* ----------------------------------------------------------------------------
516 Reads a MACE register. This is bank independent; however, the
517 caller must ensure that this call is not interruptable. We are
518 assuming that during normal operation, the MACE is always in
520 ---------------------------------------------------------------------------- */
521 static int mace_read(mace_private *lp, kio_addr_t ioaddr, int reg)
527 case 0: /* register 0-15 */
528 data = inb(ioaddr + AM2150_MACE_BASE + reg);
530 case 1: /* register 16-31 */
531 spin_lock_irqsave(&lp->bank_lock, flags);
533 data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
535 spin_unlock_irqrestore(&lp->bank_lock, flags);
538 return (data & 0xFF);
541 /* ----------------------------------------------------------------------------
543 Writes to a MACE register. This is bank independent; however,
544 the caller must ensure that this call is not interruptable. We
545 are assuming that during normal operation, the MACE is always in
547 ---------------------------------------------------------------------------- */
548 static void mace_write(mace_private *lp, kio_addr_t ioaddr, int reg, int data)
553 case 0: /* register 0-15 */
554 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg);
556 case 1: /* register 16-31 */
557 spin_lock_irqsave(&lp->bank_lock, flags);
559 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
561 spin_unlock_irqrestore(&lp->bank_lock, flags);
566 /* ----------------------------------------------------------------------------
568 Resets the MACE chip.
569 ---------------------------------------------------------------------------- */
570 static int mace_init(mace_private *lp, kio_addr_t ioaddr, char *enet_addr)
575 /* MACE Software reset */
576 mace_write(lp, ioaddr, MACE_BIUCC, 1);
577 while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) {
578 /* Wait for reset bit to be cleared automatically after <= 200ns */;
581 printk(KERN_ERR "mace: reset failed, card removed ?\n");
586 mace_write(lp, ioaddr, MACE_BIUCC, 0);
588 /* The Am2150 requires that the MACE FIFOs operate in burst mode. */
589 mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F);
591 mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */
592 mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */
595 * Bit 2-1 PORTSEL[1-0] Port Select.
598 * 10 DAI Port (reserved in Am2150)
600 * For this card, only the first two are valid.
601 * So, PLSCC should be set to
604 * Or just set ASEL in PHYCC below!
608 mace_write(lp, ioaddr, MACE_PLSCC, 0x02);
611 mace_write(lp, ioaddr, MACE_PLSCC, 0x00);
614 mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4);
615 /* ASEL Auto Select. When set, the PORTSEL[1-0] bits are overridden,
616 and the MACE device will automatically select the operating media
621 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR);
622 /* Poll ADDRCHG bit */
624 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
628 printk(KERN_ERR "mace: ADDRCHG timeout, card removed ?\n");
632 /* Set PADR register */
633 for (i = 0; i < ETHER_ADDR_LEN; i++)
634 mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]);
636 /* MAC Configuration Control Register should be written last */
637 /* Let set_multicast_list set this. */
638 /* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */
639 mace_write(lp, ioaddr, MACE_MACCC, 0x00);
643 /* ----------------------------------------------------------------------------
645 This routine is scheduled to run after a CARD_INSERTION event
646 is received, to configure the PCMCIA socket, and to make the
647 ethernet device available to the system.
648 ---------------------------------------------------------------------------- */
650 #define CS_CHECK(fn, ret) \
651 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
653 static int nmclan_config(struct pcmcia_device *link)
655 struct net_device *dev = link->priv;
656 mace_private *lp = netdev_priv(dev);
659 int i, last_ret, last_fn;
662 DEBUG(0, "nmclan_config(0x%p)\n", link);
664 CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
665 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
666 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
667 dev->irq = link->irq.AssignedIRQ;
668 dev->base_addr = link->io.BasePort1;
670 ioaddr = dev->base_addr;
672 /* Read the ethernet address from the CIS. */
673 tuple.DesiredTuple = 0x80 /* CISTPL_CFTABLE_ENTRY_MISC */;
674 tuple.TupleData = buf;
675 tuple.TupleDataMax = 64;
676 tuple.TupleOffset = 0;
677 tuple.Attributes = 0;
678 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
679 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
680 memcpy(dev->dev_addr, tuple.TupleData, ETHER_ADDR_LEN);
682 /* Verify configuration by reading the MACE ID. */
686 sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL);
687 sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH);
688 if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) {
689 DEBUG(0, "nmclan_cs configured: mace id=%x %x\n",
692 printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should"
693 " be 0x40 0x?9\n", sig[0], sig[1]);
698 if(mace_init(lp, ioaddr, dev->dev_addr) == -1)
701 /* The if_port symbol can be set when the module is loaded */
703 dev->if_port = if_port;
705 printk(KERN_NOTICE "nmclan_cs: invalid if_port requested\n");
707 link->dev_node = &lp->node;
708 SET_NETDEV_DEV(dev, &handle_to_dev(link));
710 i = register_netdev(dev);
712 printk(KERN_NOTICE "nmclan_cs: register_netdev() failed\n");
713 link->dev_node = NULL;
717 strcpy(lp->node.dev_name, dev->name);
719 printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port, hw_addr ",
720 dev->name, dev->base_addr, dev->irq, if_names[dev->if_port]);
721 for (i = 0; i < 6; i++)
722 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
726 cs_error(link, last_fn, last_ret);
728 nmclan_release(link);
730 } /* nmclan_config */
732 /* ----------------------------------------------------------------------------
734 After a card is removed, nmclan_release() will unregister the
735 net device, and release the PCMCIA configuration. If the device
736 is still open, this will be postponed until it is closed.
737 ---------------------------------------------------------------------------- */
738 static void nmclan_release(struct pcmcia_device *link)
740 DEBUG(0, "nmclan_release(0x%p)\n", link);
741 pcmcia_disable_device(link);
744 static int nmclan_suspend(struct pcmcia_device *link)
746 struct net_device *dev = link->priv;
749 netif_device_detach(dev);
754 static int nmclan_resume(struct pcmcia_device *link)
756 struct net_device *dev = link->priv;
760 netif_device_attach(dev);
767 /* ----------------------------------------------------------------------------
769 Reset and restore all of the Xilinx and MACE registers.
770 ---------------------------------------------------------------------------- */
771 static void nmclan_reset(struct net_device *dev)
773 mace_private *lp = netdev_priv(dev);
776 struct pcmcia_device *link = &lp->link;
780 /* Save original COR value */
782 reg.Action = CS_READ;
783 reg.Offset = CISREG_COR;
785 pcmcia_access_configuration_register(link, ®);
786 OrigCorValue = reg.Value;
789 reg.Action = CS_WRITE;
790 reg.Offset = CISREG_COR;
791 DEBUG(1, "nmclan_reset: OrigCorValue=0x%lX, resetting...\n",
793 reg.Value = COR_SOFT_RESET;
794 pcmcia_access_configuration_register(link, ®);
795 /* Need to wait for 20 ms for PCMCIA to finish reset. */
797 /* Restore original COR configuration index */
798 reg.Value = COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK);
799 pcmcia_access_configuration_register(link, ®);
800 /* Xilinx is now completely reset along with the MACE chip. */
801 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
803 #endif /* #if RESET_XILINX */
805 /* Xilinx is now completely reset along with the MACE chip. */
806 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
808 /* Reinitialize the MACE chip for operation. */
809 mace_init(lp, dev->base_addr, dev->dev_addr);
810 mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT);
812 /* Restore the multicast list and enable TX and RX. */
813 restore_multicast_list(dev);
816 /* ----------------------------------------------------------------------------
818 [Someone tell me what this is supposed to do? Is if_port a defined
819 standard? If so, there should be defines to indicate 1=10Base-T,
820 2=10Base-2, etc. including limited automatic detection.]
821 ---------------------------------------------------------------------------- */
822 static int mace_config(struct net_device *dev, struct ifmap *map)
824 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
825 if (map->port <= 2) {
826 dev->if_port = map->port;
827 printk(KERN_INFO "%s: switched to %s port\n", dev->name,
828 if_names[dev->if_port]);
835 /* ----------------------------------------------------------------------------
838 ---------------------------------------------------------------------------- */
839 static int mace_open(struct net_device *dev)
841 kio_addr_t ioaddr = dev->base_addr;
842 mace_private *lp = netdev_priv(dev);
843 struct pcmcia_device *link = lp->p_dev;
845 if (!pcmcia_dev_present(link))
852 netif_start_queue(dev);
855 return 0; /* Always succeed */
858 /* ----------------------------------------------------------------------------
860 Closes device driver.
861 ---------------------------------------------------------------------------- */
862 static int mace_close(struct net_device *dev)
864 kio_addr_t ioaddr = dev->base_addr;
865 mace_private *lp = netdev_priv(dev);
866 struct pcmcia_device *link = lp->p_dev;
868 DEBUG(2, "%s: shutting down ethercard.\n", dev->name);
870 /* Mask off all interrupts from the MACE chip. */
871 outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR);
874 netif_stop_queue(dev);
879 static void netdev_get_drvinfo(struct net_device *dev,
880 struct ethtool_drvinfo *info)
882 strcpy(info->driver, DRV_NAME);
883 strcpy(info->version, DRV_VERSION);
884 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
888 static u32 netdev_get_msglevel(struct net_device *dev)
893 static void netdev_set_msglevel(struct net_device *dev, u32 level)
897 #endif /* PCMCIA_DEBUG */
899 static const struct ethtool_ops netdev_ethtool_ops = {
900 .get_drvinfo = netdev_get_drvinfo,
902 .get_msglevel = netdev_get_msglevel,
903 .set_msglevel = netdev_set_msglevel,
904 #endif /* PCMCIA_DEBUG */
907 /* ----------------------------------------------------------------------------
909 This routine begins the packet transmit function. When completed,
910 it will generate a transmit interrupt.
912 According to /usr/src/linux/net/inet/dev.c, if _start_xmit
913 returns 0, the "packet is now solely the responsibility of the
914 driver." If _start_xmit returns non-zero, the "transmission
915 failed, put skb back into a list."
916 ---------------------------------------------------------------------------- */
918 static void mace_tx_timeout(struct net_device *dev)
920 mace_private *lp = netdev_priv(dev);
921 struct pcmcia_device *link = lp->p_dev;
923 printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name);
925 printk("resetting card\n");
926 pcmcia_reset_card(link, NULL);
927 #else /* #if RESET_ON_TIMEOUT */
928 printk("NOT resetting card\n");
929 #endif /* #if RESET_ON_TIMEOUT */
930 dev->trans_start = jiffies;
931 netif_wake_queue(dev);
934 static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev)
936 mace_private *lp = netdev_priv(dev);
937 kio_addr_t ioaddr = dev->base_addr;
939 netif_stop_queue(dev);
941 DEBUG(3, "%s: mace_start_xmit(length = %ld) called.\n",
942 dev->name, (long)skb->len);
944 #if (!TX_INTERRUPTABLE)
945 /* Disable MACE TX interrupts. */
946 outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT,
947 ioaddr + AM2150_MACE_BASE + MACE_IMR);
948 lp->tx_irq_disabled=1;
949 #endif /* #if (!TX_INTERRUPTABLE) */
952 /* This block must not be interrupted by another transmit request!
953 mace_tx_timeout will take care of timer-based retransmissions from
954 the upper layers. The interrupt handler is guaranteed never to
955 service a transmit interrupt while we are in here.
958 lp->linux_stats.tx_bytes += skb->len;
959 lp->tx_free_frames--;
961 /* WARNING: Write the _exact_ number of bytes written in the header! */
962 /* Put out the word header [must be an outw()] . . . */
963 outw(skb->len, ioaddr + AM2150_XMT);
964 /* . . . and the packet [may be any combination of outw() and outb()] */
965 outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1);
967 /* Odd byte transfer */
968 outb(skb->data[skb->len-1], ioaddr + AM2150_XMT);
971 dev->trans_start = jiffies;
974 if (lp->tx_free_frames > 0)
975 netif_start_queue(dev);
976 #endif /* #if MULTI_TX */
979 #if (!TX_INTERRUPTABLE)
980 /* Re-enable MACE TX interrupts. */
981 lp->tx_irq_disabled=0;
982 outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR);
983 #endif /* #if (!TX_INTERRUPTABLE) */
988 } /* mace_start_xmit */
990 /* ----------------------------------------------------------------------------
992 The interrupt handler.
993 ---------------------------------------------------------------------------- */
994 static irqreturn_t mace_interrupt(int irq, void *dev_id)
996 struct net_device *dev = (struct net_device *) dev_id;
997 mace_private *lp = netdev_priv(dev);
1000 int IntrCnt = MACE_MAX_IR_ITERATIONS;
1003 DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.\n",
1008 ioaddr = dev->base_addr;
1010 if (lp->tx_irq_disabled) {
1012 (lp->tx_irq_disabled?
1013 KERN_NOTICE "%s: Interrupt with tx_irq_disabled "
1014 "[isr=%02X, imr=%02X]\n":
1015 KERN_NOTICE "%s: Re-entering the interrupt handler "
1016 "[isr=%02X, imr=%02X]\n"),
1018 inb(ioaddr + AM2150_MACE_BASE + MACE_IR),
1019 inb(ioaddr + AM2150_MACE_BASE + MACE_IMR)
1021 /* WARNING: MACE_IR has been read! */
1025 if (!netif_device_present(dev)) {
1026 DEBUG(2, "%s: interrupt from dead card\n", dev->name);
1031 /* WARNING: MACE_IR is a READ/CLEAR port! */
1032 status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR);
1034 DEBUG(3, "mace_interrupt: irq 0x%X status 0x%X.\n", irq, status);
1036 if (status & MACE_IR_RCVINT) {
1037 mace_rx(dev, MACE_MAX_RX_ITERATIONS);
1040 if (status & MACE_IR_XMTINT) {
1041 unsigned char fifofc;
1042 unsigned char xmtrc;
1043 unsigned char xmtfs;
1045 fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC);
1046 if ((fifofc & MACE_FIFOFC_XMTFC)==0) {
1047 lp->linux_stats.tx_errors++;
1048 outb(0xFF, ioaddr + AM2150_XMT_SKIP);
1051 /* Transmit Retry Count (XMTRC, reg 4) */
1052 xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC);
1053 if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++;
1054 lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC);
1057 (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) &
1058 MACE_XMTFS_XMTSV /* Transmit Status Valid */
1060 lp->mace_stats.xmtsv++;
1062 if (xmtfs & ~MACE_XMTFS_XMTSV) {
1063 if (xmtfs & MACE_XMTFS_UFLO) {
1064 /* Underflow. Indicates that the Transmit FIFO emptied before
1065 the end of frame was reached. */
1066 lp->mace_stats.uflo++;
1068 if (xmtfs & MACE_XMTFS_LCOL) {
1069 /* Late Collision */
1070 lp->mace_stats.lcol++;
1072 if (xmtfs & MACE_XMTFS_MORE) {
1073 /* MORE than one retry was needed */
1074 lp->mace_stats.more++;
1076 if (xmtfs & MACE_XMTFS_ONE) {
1077 /* Exactly ONE retry occurred */
1078 lp->mace_stats.one++;
1080 if (xmtfs & MACE_XMTFS_DEFER) {
1081 /* Transmission was defered */
1082 lp->mace_stats.defer++;
1084 if (xmtfs & MACE_XMTFS_LCAR) {
1085 /* Loss of carrier */
1086 lp->mace_stats.lcar++;
1088 if (xmtfs & MACE_XMTFS_RTRY) {
1089 /* Retry error: transmit aborted after 16 attempts */
1090 lp->mace_stats.rtry++;
1092 } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */
1094 } /* if (xmtfs & MACE_XMTFS_XMTSV) */
1096 lp->linux_stats.tx_packets++;
1097 lp->tx_free_frames++;
1098 netif_wake_queue(dev);
1099 } /* if (status & MACE_IR_XMTINT) */
1101 if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) {
1102 if (status & MACE_IR_JAB) {
1103 /* Jabber Error. Excessive transmit duration (20-150ms). */
1104 lp->mace_stats.jab++;
1106 if (status & MACE_IR_BABL) {
1107 /* Babble Error. >1518 bytes transmitted. */
1108 lp->mace_stats.babl++;
1110 if (status & MACE_IR_CERR) {
1111 /* Collision Error. CERR indicates the absence of the
1112 Signal Quality Error Test message after a packet
1114 lp->mace_stats.cerr++;
1116 if (status & MACE_IR_RCVCCO) {
1117 /* Receive Collision Count Overflow; */
1118 lp->mace_stats.rcvcco++;
1120 if (status & MACE_IR_RNTPCO) {
1121 /* Runt Packet Count Overflow */
1122 lp->mace_stats.rntpco++;
1124 if (status & MACE_IR_MPCO) {
1125 /* Missed Packet Count Overflow */
1126 lp->mace_stats.mpco++;
1128 } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */
1130 } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt));
1133 } /* mace_interrupt */
1135 /* ----------------------------------------------------------------------------
1138 ---------------------------------------------------------------------------- */
1139 static int mace_rx(struct net_device *dev, unsigned char RxCnt)
1141 mace_private *lp = netdev_priv(dev);
1142 kio_addr_t ioaddr = dev->base_addr;
1143 unsigned char rx_framecnt;
1144 unsigned short rx_status;
1147 ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) &&
1148 (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */
1151 rx_status = inw(ioaddr + AM2150_RCV);
1153 DEBUG(3, "%s: in mace_rx(), framecnt 0x%X, rx_status"
1154 " 0x%X.\n", dev->name, rx_framecnt, rx_status);
1156 if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */
1157 lp->linux_stats.rx_errors++;
1158 if (rx_status & MACE_RCVFS_OFLO) {
1159 lp->mace_stats.oflo++;
1161 if (rx_status & MACE_RCVFS_CLSN) {
1162 lp->mace_stats.clsn++;
1164 if (rx_status & MACE_RCVFS_FRAM) {
1165 lp->mace_stats.fram++;
1167 if (rx_status & MACE_RCVFS_FCS) {
1168 lp->mace_stats.fcs++;
1171 short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4;
1172 /* Auto Strip is off, always subtract 4 */
1173 struct sk_buff *skb;
1175 lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV);
1176 /* runt packet count */
1177 lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV);
1178 /* rcv collision count */
1180 DEBUG(3, " receiving packet size 0x%X rx_status"
1181 " 0x%X.\n", pkt_len, rx_status);
1183 skb = dev_alloc_skb(pkt_len+2);
1186 skb_reserve(skb, 2);
1187 insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1);
1189 *(skb_tail_pointer(skb) - 1) = inb(ioaddr + AM2150_RCV);
1190 skb->protocol = eth_type_trans(skb, dev);
1192 netif_rx(skb); /* Send the packet to the upper (protocol) layers. */
1194 dev->last_rx = jiffies;
1195 lp->linux_stats.rx_packets++;
1196 lp->linux_stats.rx_bytes += pkt_len;
1197 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1200 DEBUG(1, "%s: couldn't allocate a sk_buff of size"
1201 " %d.\n", dev->name, pkt_len);
1202 lp->linux_stats.rx_dropped++;
1205 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1211 /* ----------------------------------------------------------------------------
1213 ---------------------------------------------------------------------------- */
1214 static void pr_linux_stats(struct net_device_stats *pstats)
1216 DEBUG(2, "pr_linux_stats\n");
1217 DEBUG(2, " rx_packets=%-7ld tx_packets=%ld\n",
1218 (long)pstats->rx_packets, (long)pstats->tx_packets);
1219 DEBUG(2, " rx_errors=%-7ld tx_errors=%ld\n",
1220 (long)pstats->rx_errors, (long)pstats->tx_errors);
1221 DEBUG(2, " rx_dropped=%-7ld tx_dropped=%ld\n",
1222 (long)pstats->rx_dropped, (long)pstats->tx_dropped);
1223 DEBUG(2, " multicast=%-7ld collisions=%ld\n",
1224 (long)pstats->multicast, (long)pstats->collisions);
1226 DEBUG(2, " rx_length_errors=%-7ld rx_over_errors=%ld\n",
1227 (long)pstats->rx_length_errors, (long)pstats->rx_over_errors);
1228 DEBUG(2, " rx_crc_errors=%-7ld rx_frame_errors=%ld\n",
1229 (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors);
1230 DEBUG(2, " rx_fifo_errors=%-7ld rx_missed_errors=%ld\n",
1231 (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors);
1233 DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n",
1234 (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors);
1235 DEBUG(2, " tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n",
1236 (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors);
1237 DEBUG(2, " tx_window_errors=%ld\n",
1238 (long)pstats->tx_window_errors);
1239 } /* pr_linux_stats */
1241 /* ----------------------------------------------------------------------------
1243 ---------------------------------------------------------------------------- */
1244 static void pr_mace_stats(mace_statistics *pstats)
1246 DEBUG(2, "pr_mace_stats\n");
1248 DEBUG(2, " xmtsv=%-7d uflo=%d\n",
1249 pstats->xmtsv, pstats->uflo);
1250 DEBUG(2, " lcol=%-7d more=%d\n",
1251 pstats->lcol, pstats->more);
1252 DEBUG(2, " one=%-7d defer=%d\n",
1253 pstats->one, pstats->defer);
1254 DEBUG(2, " lcar=%-7d rtry=%d\n",
1255 pstats->lcar, pstats->rtry);
1258 DEBUG(2, " exdef=%-7d xmtrc=%d\n",
1259 pstats->exdef, pstats->xmtrc);
1261 /* RFS1--Receive Status (RCVSTS) */
1262 DEBUG(2, " oflo=%-7d clsn=%d\n",
1263 pstats->oflo, pstats->clsn);
1264 DEBUG(2, " fram=%-7d fcs=%d\n",
1265 pstats->fram, pstats->fcs);
1267 /* RFS2--Runt Packet Count (RNTPC) */
1268 /* RFS3--Receive Collision Count (RCVCC) */
1269 DEBUG(2, " rfs_rntpc=%-7d rfs_rcvcc=%d\n",
1270 pstats->rfs_rntpc, pstats->rfs_rcvcc);
1273 DEBUG(2, " jab=%-7d babl=%d\n",
1274 pstats->jab, pstats->babl);
1275 DEBUG(2, " cerr=%-7d rcvcco=%d\n",
1276 pstats->cerr, pstats->rcvcco);
1277 DEBUG(2, " rntpco=%-7d mpco=%d\n",
1278 pstats->rntpco, pstats->mpco);
1281 DEBUG(2, " mpc=%d\n", pstats->mpc);
1284 DEBUG(2, " rntpc=%d\n", pstats->rntpc);
1287 DEBUG(2, " rcvcc=%d\n", pstats->rcvcc);
1289 } /* pr_mace_stats */
1291 /* ----------------------------------------------------------------------------
1293 Update statistics. We change to register window 1, so this
1294 should be run single-threaded if the device is active. This is
1295 expected to be a rare operation, and it's simpler for the rest
1296 of the driver to assume that window 0 is always valid rather
1297 than use a special window-state variable.
1299 oflo & uflo should _never_ occur since it would mean the Xilinx
1300 was not able to transfer data between the MACE FIFO and the
1301 card's SRAM fast enough. If this happens, something is
1302 seriously wrong with the hardware.
1303 ---------------------------------------------------------------------------- */
1304 static void update_stats(kio_addr_t ioaddr, struct net_device *dev)
1306 mace_private *lp = netdev_priv(dev);
1308 lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC);
1309 lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC);
1310 lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC);
1311 /* At this point, mace_stats is fully updated for this call.
1312 We may now update the linux_stats. */
1314 /* The MACE has no equivalent for linux_stats field which are commented
1317 /* lp->linux_stats.multicast; */
1318 lp->linux_stats.collisions =
1319 lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc;
1320 /* Collision: The MACE may retry sending a packet 15 times
1321 before giving up. The retry count is in XMTRC.
1322 Does each retry constitute a collision?
1323 If so, why doesn't the RCVCC record these collisions? */
1325 /* detailed rx_errors: */
1326 lp->linux_stats.rx_length_errors =
1327 lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc;
1328 /* lp->linux_stats.rx_over_errors */
1329 lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs;
1330 lp->linux_stats.rx_frame_errors = lp->mace_stats.fram;
1331 lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo;
1332 lp->linux_stats.rx_missed_errors =
1333 lp->mace_stats.mpco * 256 + lp->mace_stats.mpc;
1335 /* detailed tx_errors */
1336 lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry;
1337 lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar;
1338 /* LCAR usually results from bad cabling. */
1339 lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo;
1340 lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr;
1341 /* lp->linux_stats.tx_window_errors; */
1344 } /* update_stats */
1346 /* ----------------------------------------------------------------------------
1348 Gathers ethernet statistics from the MACE chip.
1349 ---------------------------------------------------------------------------- */
1350 static struct net_device_stats *mace_get_stats(struct net_device *dev)
1352 mace_private *lp = netdev_priv(dev);
1354 update_stats(dev->base_addr, dev);
1356 DEBUG(1, "%s: updating the statistics.\n", dev->name);
1357 pr_linux_stats(&lp->linux_stats);
1358 pr_mace_stats(&lp->mace_stats);
1360 return &lp->linux_stats;
1361 } /* net_device_stats */
1363 /* ----------------------------------------------------------------------------
1365 Modified from Am79C90 data sheet.
1366 ---------------------------------------------------------------------------- */
1368 #ifdef BROKEN_MULTICAST
1370 static void updateCRC(int *CRC, int bit)
1377 }; /* CRC polynomial. poly[n] = coefficient of the x**n term of the
1378 CRC generator polynomial. */
1382 /* shift CRC and control bit (CRC[32]) */
1383 for (j = 32; j > 0; j--)
1387 /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */
1389 for (j = 0; j < 32; j++)
1393 /* ----------------------------------------------------------------------------
1395 Build logical address filter.
1396 Modified from Am79C90 data sheet.
1399 ladrf: logical address filter (contents initialized to 0)
1400 adr: ethernet address
1401 ---------------------------------------------------------------------------- */
1402 static void BuildLAF(int *ladrf, int *adr)
1404 int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */
1406 int i, byte; /* temporary array indices */
1407 int hashcode; /* the output object */
1411 for (byte = 0; byte < 6; byte++)
1412 for (i = 0; i < 8; i++)
1413 updateCRC(CRC, (adr[byte] >> i) & 1);
1416 for (i = 0; i < 6; i++)
1417 hashcode = (hashcode << 1) + CRC[i];
1419 byte = hashcode >> 3;
1420 ladrf[byte] |= (1 << (hashcode & 7));
1424 printk(KERN_DEBUG " adr =");
1425 for (i = 0; i < 6; i++)
1426 printk(" %02X", adr[i]);
1427 printk("\n" KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63]"
1429 for (i = 0; i < 8; i++)
1430 printk(" %02X", ladrf[i]);
1436 /* ----------------------------------------------------------------------------
1437 restore_multicast_list
1438 Restores the multicast filter for MACE chip to the last
1439 set_multicast_list() call.
1444 ---------------------------------------------------------------------------- */
1445 static void restore_multicast_list(struct net_device *dev)
1447 mace_private *lp = netdev_priv(dev);
1448 int num_addrs = lp->multicast_num_addrs;
1449 int *ladrf = lp->multicast_ladrf;
1450 kio_addr_t ioaddr = dev->base_addr;
1453 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n",
1454 dev->name, num_addrs);
1456 if (num_addrs > 0) {
1458 DEBUG(1, "Attempt to restore multicast list detected.\n");
1460 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR);
1461 /* Poll ADDRCHG bit */
1462 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
1464 /* Set LADRF register */
1465 for (i = 0; i < MACE_LADRF_LEN; i++)
1466 mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]);
1468 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL);
1469 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1471 } else if (num_addrs < 0) {
1473 /* Promiscuous mode: receive all packets */
1474 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1475 mace_write(lp, ioaddr, MACE_MACCC,
1476 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1482 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1483 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1486 } /* restore_multicast_list */
1488 /* ----------------------------------------------------------------------------
1490 Set or clear the multicast filter for this adaptor.
1493 num_addrs == -1 Promiscuous mode, receive all packets
1494 num_addrs == 0 Normal mode, clear multicast list
1495 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
1496 best-effort filtering.
1500 ---------------------------------------------------------------------------- */
1502 static void set_multicast_list(struct net_device *dev)
1504 mace_private *lp = netdev_priv(dev);
1505 int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */
1507 struct dev_mc_list *dmi = dev->mc_list;
1512 if (dev->mc_count != old) {
1513 old = dev->mc_count;
1514 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1520 /* Set multicast_num_addrs. */
1521 lp->multicast_num_addrs = dev->mc_count;
1523 /* Set multicast_ladrf. */
1524 if (num_addrs > 0) {
1525 /* Calculate multicast logical address filter */
1526 memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN);
1527 for (i = 0; i < dev->mc_count; i++) {
1528 memcpy(adr, dmi->dmi_addr, ETHER_ADDR_LEN);
1530 BuildLAF(lp->multicast_ladrf, adr);
1534 restore_multicast_list(dev);
1536 } /* set_multicast_list */
1538 #endif /* BROKEN_MULTICAST */
1540 static void restore_multicast_list(struct net_device *dev)
1542 kio_addr_t ioaddr = dev->base_addr;
1543 mace_private *lp = netdev_priv(dev);
1545 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", dev->name,
1546 lp->multicast_num_addrs);
1548 if (dev->flags & IFF_PROMISC) {
1549 /* Promiscuous mode: receive all packets */
1550 mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1551 mace_write(lp, ioaddr, MACE_MACCC,
1552 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1556 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1557 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1559 } /* restore_multicast_list */
1561 static void set_multicast_list(struct net_device *dev)
1563 mace_private *lp = netdev_priv(dev);
1568 if (dev->mc_count != old) {
1569 old = dev->mc_count;
1570 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1576 lp->multicast_num_addrs = dev->mc_count;
1577 restore_multicast_list(dev);
1579 } /* set_multicast_list */
1581 static struct pcmcia_device_id nmclan_ids[] = {
1582 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941),
1583 PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet+", 0xebf1d60, 0xad673aaf),
1586 MODULE_DEVICE_TABLE(pcmcia, nmclan_ids);
1588 static struct pcmcia_driver nmclan_cs_driver = {
1589 .owner = THIS_MODULE,
1591 .name = "nmclan_cs",
1593 .probe = nmclan_probe,
1594 .remove = nmclan_detach,
1595 .id_table = nmclan_ids,
1596 .suspend = nmclan_suspend,
1597 .resume = nmclan_resume,
1600 static int __init init_nmclan_cs(void)
1602 return pcmcia_register_driver(&nmclan_cs_driver);
1605 static void __exit exit_nmclan_cs(void)
1607 pcmcia_unregister_driver(&nmclan_cs_driver);
1610 module_init(init_nmclan_cs);
1611 module_exit(exit_nmclan_cs);