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@lxorguk.ukuu.org.uk>
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 netdev_tx_t mace_start_xmit(struct sk_buff *skb,
428 struct net_device *dev);
429 static void mace_tx_timeout(struct net_device *dev);
430 static irqreturn_t mace_interrupt(int irq, void *dev_id);
431 static struct net_device_stats *mace_get_stats(struct net_device *dev);
432 static int mace_rx(struct net_device *dev, unsigned char RxCnt);
433 static void restore_multicast_list(struct net_device *dev);
434 static void set_multicast_list(struct net_device *dev);
435 static const struct ethtool_ops netdev_ethtool_ops;
438 static void nmclan_detach(struct pcmcia_device *p_dev);
440 static const struct net_device_ops mace_netdev_ops = {
441 .ndo_open = mace_open,
442 .ndo_stop = mace_close,
443 .ndo_start_xmit = mace_start_xmit,
444 .ndo_tx_timeout = mace_tx_timeout,
445 .ndo_set_config = mace_config,
446 .ndo_get_stats = mace_get_stats,
447 .ndo_set_multicast_list = set_multicast_list,
448 .ndo_change_mtu = eth_change_mtu,
449 .ndo_set_mac_address = eth_mac_addr,
450 .ndo_validate_addr = eth_validate_addr,
453 /* ----------------------------------------------------------------------------
455 Creates an "instance" of the driver, allocating local data
456 structures for one device. The device is registered with Card
458 ---------------------------------------------------------------------------- */
460 static int nmclan_probe(struct pcmcia_device *link)
463 struct net_device *dev;
465 DEBUG(0, "nmclan_attach()\n");
466 DEBUG(1, "%s\n", rcsid);
468 /* Create new ethernet device */
469 dev = alloc_etherdev(sizeof(mace_private));
472 lp = netdev_priv(dev);
476 spin_lock_init(&lp->bank_lock);
477 link->io.NumPorts1 = 32;
478 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
479 link->io.IOAddrLines = 5;
480 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
481 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
482 link->irq.Handler = &mace_interrupt;
483 link->irq.Instance = dev;
484 link->conf.Attributes = CONF_ENABLE_IRQ;
485 link->conf.IntType = INT_MEMORY_AND_IO;
486 link->conf.ConfigIndex = 1;
487 link->conf.Present = PRESENT_OPTION;
489 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
491 dev->netdev_ops = &mace_netdev_ops;
492 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
493 dev->watchdog_timeo = TX_TIMEOUT;
495 return nmclan_config(link);
496 } /* nmclan_attach */
498 /* ----------------------------------------------------------------------------
500 This deletes a driver "instance". The device is de-registered
501 with Card Services. If it has been released, all local data
502 structures are freed. Otherwise, the structures will be freed
503 when the device is released.
504 ---------------------------------------------------------------------------- */
506 static void nmclan_detach(struct pcmcia_device *link)
508 struct net_device *dev = link->priv;
510 DEBUG(0, "nmclan_detach(0x%p)\n", link);
513 unregister_netdev(dev);
515 nmclan_release(link);
518 } /* nmclan_detach */
520 /* ----------------------------------------------------------------------------
522 Reads a MACE register. This is bank independent; however, the
523 caller must ensure that this call is not interruptable. We are
524 assuming that during normal operation, the MACE is always in
526 ---------------------------------------------------------------------------- */
527 static int mace_read(mace_private *lp, unsigned int ioaddr, int reg)
533 case 0: /* register 0-15 */
534 data = inb(ioaddr + AM2150_MACE_BASE + reg);
536 case 1: /* register 16-31 */
537 spin_lock_irqsave(&lp->bank_lock, flags);
539 data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
541 spin_unlock_irqrestore(&lp->bank_lock, flags);
544 return (data & 0xFF);
547 /* ----------------------------------------------------------------------------
549 Writes to a MACE register. This is bank independent; however,
550 the caller must ensure that this call is not interruptable. We
551 are assuming that during normal operation, the MACE is always in
553 ---------------------------------------------------------------------------- */
554 static void mace_write(mace_private *lp, unsigned int ioaddr, int reg,
560 case 0: /* register 0-15 */
561 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg);
563 case 1: /* register 16-31 */
564 spin_lock_irqsave(&lp->bank_lock, flags);
566 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
568 spin_unlock_irqrestore(&lp->bank_lock, flags);
573 /* ----------------------------------------------------------------------------
575 Resets the MACE chip.
576 ---------------------------------------------------------------------------- */
577 static int mace_init(mace_private *lp, unsigned int ioaddr, char *enet_addr)
582 /* MACE Software reset */
583 mace_write(lp, ioaddr, MACE_BIUCC, 1);
584 while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) {
585 /* Wait for reset bit to be cleared automatically after <= 200ns */;
588 printk(KERN_ERR "mace: reset failed, card removed ?\n");
593 mace_write(lp, ioaddr, MACE_BIUCC, 0);
595 /* The Am2150 requires that the MACE FIFOs operate in burst mode. */
596 mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F);
598 mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */
599 mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */
602 * Bit 2-1 PORTSEL[1-0] Port Select.
605 * 10 DAI Port (reserved in Am2150)
607 * For this card, only the first two are valid.
608 * So, PLSCC should be set to
611 * Or just set ASEL in PHYCC below!
615 mace_write(lp, ioaddr, MACE_PLSCC, 0x02);
618 mace_write(lp, ioaddr, MACE_PLSCC, 0x00);
621 mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4);
622 /* ASEL Auto Select. When set, the PORTSEL[1-0] bits are overridden,
623 and the MACE device will automatically select the operating media
628 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR);
629 /* Poll ADDRCHG bit */
631 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
635 printk(KERN_ERR "mace: ADDRCHG timeout, card removed ?\n");
639 /* Set PADR register */
640 for (i = 0; i < ETHER_ADDR_LEN; i++)
641 mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]);
643 /* MAC Configuration Control Register should be written last */
644 /* Let set_multicast_list set this. */
645 /* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */
646 mace_write(lp, ioaddr, MACE_MACCC, 0x00);
650 /* ----------------------------------------------------------------------------
652 This routine is scheduled to run after a CARD_INSERTION event
653 is received, to configure the PCMCIA socket, and to make the
654 ethernet device available to the system.
655 ---------------------------------------------------------------------------- */
657 #define CS_CHECK(fn, ret) \
658 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
660 static int nmclan_config(struct pcmcia_device *link)
662 struct net_device *dev = link->priv;
663 mace_private *lp = netdev_priv(dev);
666 int i, last_ret, last_fn;
669 DEBUG(0, "nmclan_config(0x%p)\n", link);
671 CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
672 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
673 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
674 dev->irq = link->irq.AssignedIRQ;
675 dev->base_addr = link->io.BasePort1;
677 ioaddr = dev->base_addr;
679 /* Read the ethernet address from the CIS. */
680 len = pcmcia_get_tuple(link, 0x80, &buf);
681 if (!buf || len < ETHER_ADDR_LEN) {
685 memcpy(dev->dev_addr, buf, ETHER_ADDR_LEN);
688 /* Verify configuration by reading the MACE ID. */
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",
698 printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should"
699 " be 0x40 0x?9\n", sig[0], sig[1]);
704 if(mace_init(lp, ioaddr, dev->dev_addr) == -1)
707 /* The if_port symbol can be set when the module is loaded */
709 dev->if_port = if_port;
711 printk(KERN_NOTICE "nmclan_cs: invalid if_port requested\n");
713 link->dev_node = &lp->node;
714 SET_NETDEV_DEV(dev, &handle_to_dev(link));
716 i = register_netdev(dev);
718 printk(KERN_NOTICE "nmclan_cs: register_netdev() failed\n");
719 link->dev_node = NULL;
723 strcpy(lp->node.dev_name, dev->name);
725 printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port,"
727 dev->name, dev->base_addr, dev->irq, if_names[dev->if_port],
732 cs_error(link, last_fn, last_ret);
734 nmclan_release(link);
736 } /* nmclan_config */
738 /* ----------------------------------------------------------------------------
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 ---------------------------------------------------------------------------- */
744 static void nmclan_release(struct pcmcia_device *link)
746 DEBUG(0, "nmclan_release(0x%p)\n", link);
747 pcmcia_disable_device(link);
750 static int nmclan_suspend(struct pcmcia_device *link)
752 struct net_device *dev = link->priv;
755 netif_device_detach(dev);
760 static int nmclan_resume(struct pcmcia_device *link)
762 struct net_device *dev = link->priv;
766 netif_device_attach(dev);
773 /* ----------------------------------------------------------------------------
775 Reset and restore all of the Xilinx and MACE registers.
776 ---------------------------------------------------------------------------- */
777 static void nmclan_reset(struct net_device *dev)
779 mace_private *lp = netdev_priv(dev);
782 struct pcmcia_device *link = &lp->link;
786 /* Save original COR value */
788 reg.Action = CS_READ;
789 reg.Offset = CISREG_COR;
791 pcmcia_access_configuration_register(link, ®);
792 OrigCorValue = reg.Value;
795 reg.Action = CS_WRITE;
796 reg.Offset = CISREG_COR;
797 DEBUG(1, "nmclan_reset: OrigCorValue=0x%lX, resetting...\n",
799 reg.Value = COR_SOFT_RESET;
800 pcmcia_access_configuration_register(link, ®);
801 /* Need to wait for 20 ms for PCMCIA to finish reset. */
803 /* Restore original COR configuration index */
804 reg.Value = COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK);
805 pcmcia_access_configuration_register(link, ®);
806 /* Xilinx is now completely reset along with the MACE chip. */
807 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
809 #endif /* #if RESET_XILINX */
811 /* Xilinx is now completely reset along with the MACE chip. */
812 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
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);
818 /* Restore the multicast list and enable TX and RX. */
819 restore_multicast_list(dev);
822 /* ----------------------------------------------------------------------------
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 ---------------------------------------------------------------------------- */
828 static int mace_config(struct net_device *dev, struct ifmap *map)
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]);
841 /* ----------------------------------------------------------------------------
844 ---------------------------------------------------------------------------- */
845 static int mace_open(struct net_device *dev)
847 unsigned int ioaddr = dev->base_addr;
848 mace_private *lp = netdev_priv(dev);
849 struct pcmcia_device *link = lp->p_dev;
851 if (!pcmcia_dev_present(link))
858 netif_start_queue(dev);
861 return 0; /* Always succeed */
864 /* ----------------------------------------------------------------------------
866 Closes device driver.
867 ---------------------------------------------------------------------------- */
868 static int mace_close(struct net_device *dev)
870 unsigned int ioaddr = dev->base_addr;
871 mace_private *lp = netdev_priv(dev);
872 struct pcmcia_device *link = lp->p_dev;
874 DEBUG(2, "%s: shutting down ethercard.\n", dev->name);
876 /* Mask off all interrupts from the MACE chip. */
877 outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR);
880 netif_stop_queue(dev);
885 static void netdev_get_drvinfo(struct net_device *dev,
886 struct ethtool_drvinfo *info)
888 strcpy(info->driver, DRV_NAME);
889 strcpy(info->version, DRV_VERSION);
890 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
894 static u32 netdev_get_msglevel(struct net_device *dev)
899 static void netdev_set_msglevel(struct net_device *dev, u32 level)
903 #endif /* PCMCIA_DEBUG */
905 static const struct ethtool_ops netdev_ethtool_ops = {
906 .get_drvinfo = netdev_get_drvinfo,
908 .get_msglevel = netdev_get_msglevel,
909 .set_msglevel = netdev_set_msglevel,
910 #endif /* PCMCIA_DEBUG */
913 /* ----------------------------------------------------------------------------
915 This routine begins the packet transmit function. When completed,
916 it will generate a transmit interrupt.
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 ---------------------------------------------------------------------------- */
924 static void mace_tx_timeout(struct net_device *dev)
926 mace_private *lp = netdev_priv(dev);
927 struct pcmcia_device *link = lp->p_dev;
929 printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name);
931 printk("resetting card\n");
932 pcmcia_reset_card(link->socket);
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);
940 static netdev_tx_t mace_start_xmit(struct sk_buff *skb,
941 struct net_device *dev)
943 mace_private *lp = netdev_priv(dev);
944 unsigned int ioaddr = dev->base_addr;
946 netif_stop_queue(dev);
948 DEBUG(3, "%s: mace_start_xmit(length = %ld) called.\n",
949 dev->name, (long)skb->len);
951 #if (!TX_INTERRUPTABLE)
952 /* Disable MACE TX interrupts. */
953 outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT,
954 ioaddr + AM2150_MACE_BASE + MACE_IMR);
955 lp->tx_irq_disabled=1;
956 #endif /* #if (!TX_INTERRUPTABLE) */
959 /* This block must not be interrupted by another transmit request!
960 mace_tx_timeout will take care of timer-based retransmissions from
961 the upper layers. The interrupt handler is guaranteed never to
962 service a transmit interrupt while we are in here.
965 lp->linux_stats.tx_bytes += skb->len;
966 lp->tx_free_frames--;
968 /* WARNING: Write the _exact_ number of bytes written in the header! */
969 /* Put out the word header [must be an outw()] . . . */
970 outw(skb->len, ioaddr + AM2150_XMT);
971 /* . . . and the packet [may be any combination of outw() and outb()] */
972 outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1);
974 /* Odd byte transfer */
975 outb(skb->data[skb->len-1], ioaddr + AM2150_XMT);
978 dev->trans_start = jiffies;
981 if (lp->tx_free_frames > 0)
982 netif_start_queue(dev);
983 #endif /* #if MULTI_TX */
986 #if (!TX_INTERRUPTABLE)
987 /* Re-enable MACE TX interrupts. */
988 lp->tx_irq_disabled=0;
989 outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR);
990 #endif /* #if (!TX_INTERRUPTABLE) */
995 } /* mace_start_xmit */
997 /* ----------------------------------------------------------------------------
999 The interrupt handler.
1000 ---------------------------------------------------------------------------- */
1001 static irqreturn_t mace_interrupt(int irq, void *dev_id)
1003 struct net_device *dev = (struct net_device *) dev_id;
1004 mace_private *lp = netdev_priv(dev);
1005 unsigned int ioaddr;
1007 int IntrCnt = MACE_MAX_IR_ITERATIONS;
1010 DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.\n",
1015 ioaddr = dev->base_addr;
1017 if (lp->tx_irq_disabled) {
1019 (lp->tx_irq_disabled?
1020 KERN_NOTICE "%s: Interrupt with tx_irq_disabled "
1021 "[isr=%02X, imr=%02X]\n":
1022 KERN_NOTICE "%s: Re-entering the interrupt handler "
1023 "[isr=%02X, imr=%02X]\n"),
1025 inb(ioaddr + AM2150_MACE_BASE + MACE_IR),
1026 inb(ioaddr + AM2150_MACE_BASE + MACE_IMR)
1028 /* WARNING: MACE_IR has been read! */
1032 if (!netif_device_present(dev)) {
1033 DEBUG(2, "%s: interrupt from dead card\n", dev->name);
1038 /* WARNING: MACE_IR is a READ/CLEAR port! */
1039 status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR);
1041 DEBUG(3, "mace_interrupt: irq 0x%X status 0x%X.\n", irq, status);
1043 if (status & MACE_IR_RCVINT) {
1044 mace_rx(dev, MACE_MAX_RX_ITERATIONS);
1047 if (status & MACE_IR_XMTINT) {
1048 unsigned char fifofc;
1049 unsigned char xmtrc;
1050 unsigned char xmtfs;
1052 fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC);
1053 if ((fifofc & MACE_FIFOFC_XMTFC)==0) {
1054 lp->linux_stats.tx_errors++;
1055 outb(0xFF, ioaddr + AM2150_XMT_SKIP);
1058 /* Transmit Retry Count (XMTRC, reg 4) */
1059 xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC);
1060 if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++;
1061 lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC);
1064 (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) &
1065 MACE_XMTFS_XMTSV /* Transmit Status Valid */
1067 lp->mace_stats.xmtsv++;
1069 if (xmtfs & ~MACE_XMTFS_XMTSV) {
1070 if (xmtfs & MACE_XMTFS_UFLO) {
1071 /* Underflow. Indicates that the Transmit FIFO emptied before
1072 the end of frame was reached. */
1073 lp->mace_stats.uflo++;
1075 if (xmtfs & MACE_XMTFS_LCOL) {
1076 /* Late Collision */
1077 lp->mace_stats.lcol++;
1079 if (xmtfs & MACE_XMTFS_MORE) {
1080 /* MORE than one retry was needed */
1081 lp->mace_stats.more++;
1083 if (xmtfs & MACE_XMTFS_ONE) {
1084 /* Exactly ONE retry occurred */
1085 lp->mace_stats.one++;
1087 if (xmtfs & MACE_XMTFS_DEFER) {
1088 /* Transmission was defered */
1089 lp->mace_stats.defer++;
1091 if (xmtfs & MACE_XMTFS_LCAR) {
1092 /* Loss of carrier */
1093 lp->mace_stats.lcar++;
1095 if (xmtfs & MACE_XMTFS_RTRY) {
1096 /* Retry error: transmit aborted after 16 attempts */
1097 lp->mace_stats.rtry++;
1099 } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */
1101 } /* if (xmtfs & MACE_XMTFS_XMTSV) */
1103 lp->linux_stats.tx_packets++;
1104 lp->tx_free_frames++;
1105 netif_wake_queue(dev);
1106 } /* if (status & MACE_IR_XMTINT) */
1108 if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) {
1109 if (status & MACE_IR_JAB) {
1110 /* Jabber Error. Excessive transmit duration (20-150ms). */
1111 lp->mace_stats.jab++;
1113 if (status & MACE_IR_BABL) {
1114 /* Babble Error. >1518 bytes transmitted. */
1115 lp->mace_stats.babl++;
1117 if (status & MACE_IR_CERR) {
1118 /* Collision Error. CERR indicates the absence of the
1119 Signal Quality Error Test message after a packet
1121 lp->mace_stats.cerr++;
1123 if (status & MACE_IR_RCVCCO) {
1124 /* Receive Collision Count Overflow; */
1125 lp->mace_stats.rcvcco++;
1127 if (status & MACE_IR_RNTPCO) {
1128 /* Runt Packet Count Overflow */
1129 lp->mace_stats.rntpco++;
1131 if (status & MACE_IR_MPCO) {
1132 /* Missed Packet Count Overflow */
1133 lp->mace_stats.mpco++;
1135 } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */
1137 } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt));
1140 } /* mace_interrupt */
1142 /* ----------------------------------------------------------------------------
1145 ---------------------------------------------------------------------------- */
1146 static int mace_rx(struct net_device *dev, unsigned char RxCnt)
1148 mace_private *lp = netdev_priv(dev);
1149 unsigned int ioaddr = dev->base_addr;
1150 unsigned char rx_framecnt;
1151 unsigned short rx_status;
1154 ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) &&
1155 (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */
1158 rx_status = inw(ioaddr + AM2150_RCV);
1160 DEBUG(3, "%s: in mace_rx(), framecnt 0x%X, rx_status"
1161 " 0x%X.\n", dev->name, rx_framecnt, rx_status);
1163 if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */
1164 lp->linux_stats.rx_errors++;
1165 if (rx_status & MACE_RCVFS_OFLO) {
1166 lp->mace_stats.oflo++;
1168 if (rx_status & MACE_RCVFS_CLSN) {
1169 lp->mace_stats.clsn++;
1171 if (rx_status & MACE_RCVFS_FRAM) {
1172 lp->mace_stats.fram++;
1174 if (rx_status & MACE_RCVFS_FCS) {
1175 lp->mace_stats.fcs++;
1178 short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4;
1179 /* Auto Strip is off, always subtract 4 */
1180 struct sk_buff *skb;
1182 lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV);
1183 /* runt packet count */
1184 lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV);
1185 /* rcv collision count */
1187 DEBUG(3, " receiving packet size 0x%X rx_status"
1188 " 0x%X.\n", pkt_len, rx_status);
1190 skb = dev_alloc_skb(pkt_len+2);
1193 skb_reserve(skb, 2);
1194 insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1);
1196 *(skb_tail_pointer(skb) - 1) = inb(ioaddr + AM2150_RCV);
1197 skb->protocol = eth_type_trans(skb, dev);
1199 netif_rx(skb); /* Send the packet to the upper (protocol) layers. */
1201 lp->linux_stats.rx_packets++;
1202 lp->linux_stats.rx_bytes += pkt_len;
1203 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1206 DEBUG(1, "%s: couldn't allocate a sk_buff of size"
1207 " %d.\n", dev->name, pkt_len);
1208 lp->linux_stats.rx_dropped++;
1211 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1217 /* ----------------------------------------------------------------------------
1219 ---------------------------------------------------------------------------- */
1220 static void pr_linux_stats(struct net_device_stats *pstats)
1222 DEBUG(2, "pr_linux_stats\n");
1223 DEBUG(2, " rx_packets=%-7ld tx_packets=%ld\n",
1224 (long)pstats->rx_packets, (long)pstats->tx_packets);
1225 DEBUG(2, " rx_errors=%-7ld tx_errors=%ld\n",
1226 (long)pstats->rx_errors, (long)pstats->tx_errors);
1227 DEBUG(2, " rx_dropped=%-7ld tx_dropped=%ld\n",
1228 (long)pstats->rx_dropped, (long)pstats->tx_dropped);
1229 DEBUG(2, " multicast=%-7ld collisions=%ld\n",
1230 (long)pstats->multicast, (long)pstats->collisions);
1232 DEBUG(2, " rx_length_errors=%-7ld rx_over_errors=%ld\n",
1233 (long)pstats->rx_length_errors, (long)pstats->rx_over_errors);
1234 DEBUG(2, " rx_crc_errors=%-7ld rx_frame_errors=%ld\n",
1235 (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors);
1236 DEBUG(2, " rx_fifo_errors=%-7ld rx_missed_errors=%ld\n",
1237 (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors);
1239 DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n",
1240 (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors);
1241 DEBUG(2, " tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n",
1242 (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors);
1243 DEBUG(2, " tx_window_errors=%ld\n",
1244 (long)pstats->tx_window_errors);
1245 } /* pr_linux_stats */
1247 /* ----------------------------------------------------------------------------
1249 ---------------------------------------------------------------------------- */
1250 static void pr_mace_stats(mace_statistics *pstats)
1252 DEBUG(2, "pr_mace_stats\n");
1254 DEBUG(2, " xmtsv=%-7d uflo=%d\n",
1255 pstats->xmtsv, pstats->uflo);
1256 DEBUG(2, " lcol=%-7d more=%d\n",
1257 pstats->lcol, pstats->more);
1258 DEBUG(2, " one=%-7d defer=%d\n",
1259 pstats->one, pstats->defer);
1260 DEBUG(2, " lcar=%-7d rtry=%d\n",
1261 pstats->lcar, pstats->rtry);
1264 DEBUG(2, " exdef=%-7d xmtrc=%d\n",
1265 pstats->exdef, pstats->xmtrc);
1267 /* RFS1--Receive Status (RCVSTS) */
1268 DEBUG(2, " oflo=%-7d clsn=%d\n",
1269 pstats->oflo, pstats->clsn);
1270 DEBUG(2, " fram=%-7d fcs=%d\n",
1271 pstats->fram, pstats->fcs);
1273 /* RFS2--Runt Packet Count (RNTPC) */
1274 /* RFS3--Receive Collision Count (RCVCC) */
1275 DEBUG(2, " rfs_rntpc=%-7d rfs_rcvcc=%d\n",
1276 pstats->rfs_rntpc, pstats->rfs_rcvcc);
1279 DEBUG(2, " jab=%-7d babl=%d\n",
1280 pstats->jab, pstats->babl);
1281 DEBUG(2, " cerr=%-7d rcvcco=%d\n",
1282 pstats->cerr, pstats->rcvcco);
1283 DEBUG(2, " rntpco=%-7d mpco=%d\n",
1284 pstats->rntpco, pstats->mpco);
1287 DEBUG(2, " mpc=%d\n", pstats->mpc);
1290 DEBUG(2, " rntpc=%d\n", pstats->rntpc);
1293 DEBUG(2, " rcvcc=%d\n", pstats->rcvcc);
1295 } /* pr_mace_stats */
1297 /* ----------------------------------------------------------------------------
1299 Update statistics. We change to register window 1, so this
1300 should be run single-threaded if the device is active. This is
1301 expected to be a rare operation, and it's simpler for the rest
1302 of the driver to assume that window 0 is always valid rather
1303 than use a special window-state variable.
1305 oflo & uflo should _never_ occur since it would mean the Xilinx
1306 was not able to transfer data between the MACE FIFO and the
1307 card's SRAM fast enough. If this happens, something is
1308 seriously wrong with the hardware.
1309 ---------------------------------------------------------------------------- */
1310 static void update_stats(unsigned int ioaddr, struct net_device *dev)
1312 mace_private *lp = netdev_priv(dev);
1314 lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC);
1315 lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC);
1316 lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC);
1317 /* At this point, mace_stats is fully updated for this call.
1318 We may now update the linux_stats. */
1320 /* The MACE has no equivalent for linux_stats field which are commented
1323 /* lp->linux_stats.multicast; */
1324 lp->linux_stats.collisions =
1325 lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc;
1326 /* Collision: The MACE may retry sending a packet 15 times
1327 before giving up. The retry count is in XMTRC.
1328 Does each retry constitute a collision?
1329 If so, why doesn't the RCVCC record these collisions? */
1331 /* detailed rx_errors: */
1332 lp->linux_stats.rx_length_errors =
1333 lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc;
1334 /* lp->linux_stats.rx_over_errors */
1335 lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs;
1336 lp->linux_stats.rx_frame_errors = lp->mace_stats.fram;
1337 lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo;
1338 lp->linux_stats.rx_missed_errors =
1339 lp->mace_stats.mpco * 256 + lp->mace_stats.mpc;
1341 /* detailed tx_errors */
1342 lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry;
1343 lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar;
1344 /* LCAR usually results from bad cabling. */
1345 lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo;
1346 lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr;
1347 /* lp->linux_stats.tx_window_errors; */
1350 } /* update_stats */
1352 /* ----------------------------------------------------------------------------
1354 Gathers ethernet statistics from the MACE chip.
1355 ---------------------------------------------------------------------------- */
1356 static struct net_device_stats *mace_get_stats(struct net_device *dev)
1358 mace_private *lp = netdev_priv(dev);
1360 update_stats(dev->base_addr, dev);
1362 DEBUG(1, "%s: updating the statistics.\n", dev->name);
1363 pr_linux_stats(&lp->linux_stats);
1364 pr_mace_stats(&lp->mace_stats);
1366 return &lp->linux_stats;
1367 } /* net_device_stats */
1369 /* ----------------------------------------------------------------------------
1371 Modified from Am79C90 data sheet.
1372 ---------------------------------------------------------------------------- */
1374 #ifdef BROKEN_MULTICAST
1376 static void updateCRC(int *CRC, int bit)
1383 }; /* CRC polynomial. poly[n] = coefficient of the x**n term of the
1384 CRC generator polynomial. */
1388 /* shift CRC and control bit (CRC[32]) */
1389 for (j = 32; j > 0; j--)
1393 /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */
1395 for (j = 0; j < 32; j++)
1399 /* ----------------------------------------------------------------------------
1401 Build logical address filter.
1402 Modified from Am79C90 data sheet.
1405 ladrf: logical address filter (contents initialized to 0)
1406 adr: ethernet address
1407 ---------------------------------------------------------------------------- */
1408 static void BuildLAF(int *ladrf, int *adr)
1410 int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */
1412 int i, byte; /* temporary array indices */
1413 int hashcode; /* the output object */
1417 for (byte = 0; byte < 6; byte++)
1418 for (i = 0; i < 8; i++)
1419 updateCRC(CRC, (adr[byte] >> i) & 1);
1422 for (i = 0; i < 6; i++)
1423 hashcode = (hashcode << 1) + CRC[i];
1425 byte = hashcode >> 3;
1426 ladrf[byte] |= (1 << (hashcode & 7));
1430 printk(KERN_DEBUG " adr =%pM\n", adr);
1431 printk(KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63] =", hashcode);
1432 for (i = 0; i < 8; i++)
1433 printk(KERN_CONT " %02X", ladrf[i]);
1434 printk(KERN_CONT "\n");
1439 /* ----------------------------------------------------------------------------
1440 restore_multicast_list
1441 Restores the multicast filter for MACE chip to the last
1442 set_multicast_list() call.
1447 ---------------------------------------------------------------------------- */
1448 static void restore_multicast_list(struct net_device *dev)
1450 mace_private *lp = netdev_priv(dev);
1451 int num_addrs = lp->multicast_num_addrs;
1452 int *ladrf = lp->multicast_ladrf;
1453 unsigned int ioaddr = dev->base_addr;
1456 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n",
1457 dev->name, num_addrs);
1459 if (num_addrs > 0) {
1461 DEBUG(1, "Attempt to restore multicast list detected.\n");
1463 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR);
1464 /* Poll ADDRCHG bit */
1465 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
1467 /* Set LADRF register */
1468 for (i = 0; i < MACE_LADRF_LEN; i++)
1469 mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]);
1471 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL);
1472 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1474 } else if (num_addrs < 0) {
1476 /* Promiscuous mode: receive all packets */
1477 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1478 mace_write(lp, ioaddr, MACE_MACCC,
1479 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1485 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1486 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1489 } /* restore_multicast_list */
1491 /* ----------------------------------------------------------------------------
1493 Set or clear the multicast filter for this adaptor.
1496 num_addrs == -1 Promiscuous mode, receive all packets
1497 num_addrs == 0 Normal mode, clear multicast list
1498 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
1499 best-effort filtering.
1503 ---------------------------------------------------------------------------- */
1505 static void set_multicast_list(struct net_device *dev)
1507 mace_private *lp = netdev_priv(dev);
1508 int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */
1510 struct dev_mc_list *dmi = dev->mc_list;
1515 if (dev->mc_count != old) {
1516 old = dev->mc_count;
1517 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1523 /* Set multicast_num_addrs. */
1524 lp->multicast_num_addrs = dev->mc_count;
1526 /* Set multicast_ladrf. */
1527 if (num_addrs > 0) {
1528 /* Calculate multicast logical address filter */
1529 memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN);
1530 for (i = 0; i < dev->mc_count; i++) {
1531 memcpy(adr, dmi->dmi_addr, ETHER_ADDR_LEN);
1533 BuildLAF(lp->multicast_ladrf, adr);
1537 restore_multicast_list(dev);
1539 } /* set_multicast_list */
1541 #endif /* BROKEN_MULTICAST */
1543 static void restore_multicast_list(struct net_device *dev)
1545 unsigned int ioaddr = dev->base_addr;
1546 mace_private *lp = netdev_priv(dev);
1548 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", dev->name,
1549 lp->multicast_num_addrs);
1551 if (dev->flags & IFF_PROMISC) {
1552 /* Promiscuous mode: receive all packets */
1553 mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1554 mace_write(lp, ioaddr, MACE_MACCC,
1555 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1559 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1560 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1562 } /* restore_multicast_list */
1564 static void set_multicast_list(struct net_device *dev)
1566 mace_private *lp = netdev_priv(dev);
1571 if (dev->mc_count != old) {
1572 old = dev->mc_count;
1573 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1579 lp->multicast_num_addrs = dev->mc_count;
1580 restore_multicast_list(dev);
1582 } /* set_multicast_list */
1584 static struct pcmcia_device_id nmclan_ids[] = {
1585 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941),
1586 PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet+", 0xebf1d60, 0xad673aaf),
1589 MODULE_DEVICE_TABLE(pcmcia, nmclan_ids);
1591 static struct pcmcia_driver nmclan_cs_driver = {
1592 .owner = THIS_MODULE,
1594 .name = "nmclan_cs",
1596 .probe = nmclan_probe,
1597 .remove = nmclan_detach,
1598 .id_table = nmclan_ids,
1599 .suspend = nmclan_suspend,
1600 .resume = nmclan_resume,
1603 static int __init init_nmclan_cs(void)
1605 return pcmcia_register_driver(&nmclan_cs_driver);
1608 static void __exit exit_nmclan_cs(void)
1610 pcmcia_unregister_driver(&nmclan_cs_driver);
1613 module_init(init_nmclan_cs);
1614 module_exit(exit_nmclan_cs);