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 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);
660 int i, last_ret, last_fn;
663 DEBUG(0, "nmclan_config(0x%p)\n", link);
665 CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
666 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
667 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
668 dev->irq = link->irq.AssignedIRQ;
669 dev->base_addr = link->io.BasePort1;
671 ioaddr = dev->base_addr;
673 /* Read the ethernet address from the CIS. */
674 tuple.DesiredTuple = 0x80 /* CISTPL_CFTABLE_ENTRY_MISC */;
675 tuple.TupleData = buf;
676 tuple.TupleDataMax = 64;
677 tuple.TupleOffset = 0;
678 tuple.Attributes = 0;
679 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
680 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
681 memcpy(dev->dev_addr, tuple.TupleData, ETHER_ADDR_LEN);
683 /* Verify configuration by reading the MACE ID. */
687 sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL);
688 sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH);
689 if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) {
690 DEBUG(0, "nmclan_cs configured: mace id=%x %x\n",
693 printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should"
694 " be 0x40 0x?9\n", sig[0], sig[1]);
699 if(mace_init(lp, ioaddr, dev->dev_addr) == -1)
702 /* The if_port symbol can be set when the module is loaded */
704 dev->if_port = if_port;
706 printk(KERN_NOTICE "nmclan_cs: invalid if_port requested\n");
708 link->dev_node = &lp->node;
709 SET_NETDEV_DEV(dev, &handle_to_dev(link));
711 i = register_netdev(dev);
713 printk(KERN_NOTICE "nmclan_cs: register_netdev() failed\n");
714 link->dev_node = NULL;
718 strcpy(lp->node.dev_name, dev->name);
720 printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port, hw_addr ",
721 dev->name, dev->base_addr, dev->irq, if_names[dev->if_port]);
722 for (i = 0; i < 6; i++)
723 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
727 cs_error(link, last_fn, last_ret);
729 nmclan_release(link);
731 } /* nmclan_config */
733 /* ----------------------------------------------------------------------------
735 After a card is removed, nmclan_release() will unregister the
736 net device, and release the PCMCIA configuration. If the device
737 is still open, this will be postponed until it is closed.
738 ---------------------------------------------------------------------------- */
739 static void nmclan_release(struct pcmcia_device *link)
741 DEBUG(0, "nmclan_release(0x%p)\n", link);
742 pcmcia_disable_device(link);
745 static int nmclan_suspend(struct pcmcia_device *link)
747 struct net_device *dev = link->priv;
750 netif_device_detach(dev);
755 static int nmclan_resume(struct pcmcia_device *link)
757 struct net_device *dev = link->priv;
761 netif_device_attach(dev);
768 /* ----------------------------------------------------------------------------
770 Reset and restore all of the Xilinx and MACE registers.
771 ---------------------------------------------------------------------------- */
772 static void nmclan_reset(struct net_device *dev)
774 mace_private *lp = netdev_priv(dev);
777 struct pcmcia_device *link = &lp->link;
781 /* Save original COR value */
783 reg.Action = CS_READ;
784 reg.Offset = CISREG_COR;
786 pcmcia_access_configuration_register(link, ®);
787 OrigCorValue = reg.Value;
790 reg.Action = CS_WRITE;
791 reg.Offset = CISREG_COR;
792 DEBUG(1, "nmclan_reset: OrigCorValue=0x%lX, resetting...\n",
794 reg.Value = COR_SOFT_RESET;
795 pcmcia_access_configuration_register(link, ®);
796 /* Need to wait for 20 ms for PCMCIA to finish reset. */
798 /* Restore original COR configuration index */
799 reg.Value = COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK);
800 pcmcia_access_configuration_register(link, ®);
801 /* Xilinx is now completely reset along with the MACE chip. */
802 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
804 #endif /* #if RESET_XILINX */
806 /* Xilinx is now completely reset along with the MACE chip. */
807 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
809 /* Reinitialize the MACE chip for operation. */
810 mace_init(lp, dev->base_addr, dev->dev_addr);
811 mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT);
813 /* Restore the multicast list and enable TX and RX. */
814 restore_multicast_list(dev);
817 /* ----------------------------------------------------------------------------
819 [Someone tell me what this is supposed to do? Is if_port a defined
820 standard? If so, there should be defines to indicate 1=10Base-T,
821 2=10Base-2, etc. including limited automatic detection.]
822 ---------------------------------------------------------------------------- */
823 static int mace_config(struct net_device *dev, struct ifmap *map)
825 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
826 if (map->port <= 2) {
827 dev->if_port = map->port;
828 printk(KERN_INFO "%s: switched to %s port\n", dev->name,
829 if_names[dev->if_port]);
836 /* ----------------------------------------------------------------------------
839 ---------------------------------------------------------------------------- */
840 static int mace_open(struct net_device *dev)
842 kio_addr_t ioaddr = dev->base_addr;
843 mace_private *lp = netdev_priv(dev);
844 struct pcmcia_device *link = lp->p_dev;
846 if (!pcmcia_dev_present(link))
853 netif_start_queue(dev);
856 return 0; /* Always succeed */
859 /* ----------------------------------------------------------------------------
861 Closes device driver.
862 ---------------------------------------------------------------------------- */
863 static int mace_close(struct net_device *dev)
865 kio_addr_t ioaddr = dev->base_addr;
866 mace_private *lp = netdev_priv(dev);
867 struct pcmcia_device *link = lp->p_dev;
869 DEBUG(2, "%s: shutting down ethercard.\n", dev->name);
871 /* Mask off all interrupts from the MACE chip. */
872 outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR);
875 netif_stop_queue(dev);
880 static void netdev_get_drvinfo(struct net_device *dev,
881 struct ethtool_drvinfo *info)
883 strcpy(info->driver, DRV_NAME);
884 strcpy(info->version, DRV_VERSION);
885 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
889 static u32 netdev_get_msglevel(struct net_device *dev)
894 static void netdev_set_msglevel(struct net_device *dev, u32 level)
898 #endif /* PCMCIA_DEBUG */
900 static const struct ethtool_ops netdev_ethtool_ops = {
901 .get_drvinfo = netdev_get_drvinfo,
903 .get_msglevel = netdev_get_msglevel,
904 .set_msglevel = netdev_set_msglevel,
905 #endif /* PCMCIA_DEBUG */
908 /* ----------------------------------------------------------------------------
910 This routine begins the packet transmit function. When completed,
911 it will generate a transmit interrupt.
913 According to /usr/src/linux/net/inet/dev.c, if _start_xmit
914 returns 0, the "packet is now solely the responsibility of the
915 driver." If _start_xmit returns non-zero, the "transmission
916 failed, put skb back into a list."
917 ---------------------------------------------------------------------------- */
919 static void mace_tx_timeout(struct net_device *dev)
921 mace_private *lp = netdev_priv(dev);
922 struct pcmcia_device *link = lp->p_dev;
924 printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name);
926 printk("resetting card\n");
927 pcmcia_reset_card(link, NULL);
928 #else /* #if RESET_ON_TIMEOUT */
929 printk("NOT resetting card\n");
930 #endif /* #if RESET_ON_TIMEOUT */
931 dev->trans_start = jiffies;
932 netif_wake_queue(dev);
935 static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev)
937 mace_private *lp = netdev_priv(dev);
938 kio_addr_t ioaddr = dev->base_addr;
940 netif_stop_queue(dev);
942 DEBUG(3, "%s: mace_start_xmit(length = %ld) called.\n",
943 dev->name, (long)skb->len);
945 #if (!TX_INTERRUPTABLE)
946 /* Disable MACE TX interrupts. */
947 outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT,
948 ioaddr + AM2150_MACE_BASE + MACE_IMR);
949 lp->tx_irq_disabled=1;
950 #endif /* #if (!TX_INTERRUPTABLE) */
953 /* This block must not be interrupted by another transmit request!
954 mace_tx_timeout will take care of timer-based retransmissions from
955 the upper layers. The interrupt handler is guaranteed never to
956 service a transmit interrupt while we are in here.
959 lp->linux_stats.tx_bytes += skb->len;
960 lp->tx_free_frames--;
962 /* WARNING: Write the _exact_ number of bytes written in the header! */
963 /* Put out the word header [must be an outw()] . . . */
964 outw(skb->len, ioaddr + AM2150_XMT);
965 /* . . . and the packet [may be any combination of outw() and outb()] */
966 outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1);
968 /* Odd byte transfer */
969 outb(skb->data[skb->len-1], ioaddr + AM2150_XMT);
972 dev->trans_start = jiffies;
975 if (lp->tx_free_frames > 0)
976 netif_start_queue(dev);
977 #endif /* #if MULTI_TX */
980 #if (!TX_INTERRUPTABLE)
981 /* Re-enable MACE TX interrupts. */
982 lp->tx_irq_disabled=0;
983 outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR);
984 #endif /* #if (!TX_INTERRUPTABLE) */
989 } /* mace_start_xmit */
991 /* ----------------------------------------------------------------------------
993 The interrupt handler.
994 ---------------------------------------------------------------------------- */
995 static irqreturn_t mace_interrupt(int irq, void *dev_id)
997 struct net_device *dev = (struct net_device *) dev_id;
998 mace_private *lp = netdev_priv(dev);
999 kio_addr_t ioaddr = dev->base_addr;
1001 int IntrCnt = MACE_MAX_IR_ITERATIONS;
1004 DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.\n",
1009 if (lp->tx_irq_disabled) {
1011 (lp->tx_irq_disabled?
1012 KERN_NOTICE "%s: Interrupt with tx_irq_disabled "
1013 "[isr=%02X, imr=%02X]\n":
1014 KERN_NOTICE "%s: Re-entering the interrupt handler "
1015 "[isr=%02X, imr=%02X]\n"),
1017 inb(ioaddr + AM2150_MACE_BASE + MACE_IR),
1018 inb(ioaddr + AM2150_MACE_BASE + MACE_IMR)
1020 /* WARNING: MACE_IR has been read! */
1024 if (!netif_device_present(dev)) {
1025 DEBUG(2, "%s: interrupt from dead card\n", dev->name);
1030 /* WARNING: MACE_IR is a READ/CLEAR port! */
1031 status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR);
1033 DEBUG(3, "mace_interrupt: irq 0x%X status 0x%X.\n", irq, status);
1035 if (status & MACE_IR_RCVINT) {
1036 mace_rx(dev, MACE_MAX_RX_ITERATIONS);
1039 if (status & MACE_IR_XMTINT) {
1040 unsigned char fifofc;
1041 unsigned char xmtrc;
1042 unsigned char xmtfs;
1044 fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC);
1045 if ((fifofc & MACE_FIFOFC_XMTFC)==0) {
1046 lp->linux_stats.tx_errors++;
1047 outb(0xFF, ioaddr + AM2150_XMT_SKIP);
1050 /* Transmit Retry Count (XMTRC, reg 4) */
1051 xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC);
1052 if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++;
1053 lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC);
1056 (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) &
1057 MACE_XMTFS_XMTSV /* Transmit Status Valid */
1059 lp->mace_stats.xmtsv++;
1061 if (xmtfs & ~MACE_XMTFS_XMTSV) {
1062 if (xmtfs & MACE_XMTFS_UFLO) {
1063 /* Underflow. Indicates that the Transmit FIFO emptied before
1064 the end of frame was reached. */
1065 lp->mace_stats.uflo++;
1067 if (xmtfs & MACE_XMTFS_LCOL) {
1068 /* Late Collision */
1069 lp->mace_stats.lcol++;
1071 if (xmtfs & MACE_XMTFS_MORE) {
1072 /* MORE than one retry was needed */
1073 lp->mace_stats.more++;
1075 if (xmtfs & MACE_XMTFS_ONE) {
1076 /* Exactly ONE retry occurred */
1077 lp->mace_stats.one++;
1079 if (xmtfs & MACE_XMTFS_DEFER) {
1080 /* Transmission was defered */
1081 lp->mace_stats.defer++;
1083 if (xmtfs & MACE_XMTFS_LCAR) {
1084 /* Loss of carrier */
1085 lp->mace_stats.lcar++;
1087 if (xmtfs & MACE_XMTFS_RTRY) {
1088 /* Retry error: transmit aborted after 16 attempts */
1089 lp->mace_stats.rtry++;
1091 } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */
1093 } /* if (xmtfs & MACE_XMTFS_XMTSV) */
1095 lp->linux_stats.tx_packets++;
1096 lp->tx_free_frames++;
1097 netif_wake_queue(dev);
1098 } /* if (status & MACE_IR_XMTINT) */
1100 if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) {
1101 if (status & MACE_IR_JAB) {
1102 /* Jabber Error. Excessive transmit duration (20-150ms). */
1103 lp->mace_stats.jab++;
1105 if (status & MACE_IR_BABL) {
1106 /* Babble Error. >1518 bytes transmitted. */
1107 lp->mace_stats.babl++;
1109 if (status & MACE_IR_CERR) {
1110 /* Collision Error. CERR indicates the absence of the
1111 Signal Quality Error Test message after a packet
1113 lp->mace_stats.cerr++;
1115 if (status & MACE_IR_RCVCCO) {
1116 /* Receive Collision Count Overflow; */
1117 lp->mace_stats.rcvcco++;
1119 if (status & MACE_IR_RNTPCO) {
1120 /* Runt Packet Count Overflow */
1121 lp->mace_stats.rntpco++;
1123 if (status & MACE_IR_MPCO) {
1124 /* Missed Packet Count Overflow */
1125 lp->mace_stats.mpco++;
1127 } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */
1129 } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt));
1132 } /* mace_interrupt */
1134 /* ----------------------------------------------------------------------------
1137 ---------------------------------------------------------------------------- */
1138 static int mace_rx(struct net_device *dev, unsigned char RxCnt)
1140 mace_private *lp = netdev_priv(dev);
1141 kio_addr_t ioaddr = dev->base_addr;
1142 unsigned char rx_framecnt;
1143 unsigned short rx_status;
1146 ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) &&
1147 (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */
1150 rx_status = inw(ioaddr + AM2150_RCV);
1152 DEBUG(3, "%s: in mace_rx(), framecnt 0x%X, rx_status"
1153 " 0x%X.\n", dev->name, rx_framecnt, rx_status);
1155 if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */
1156 lp->linux_stats.rx_errors++;
1157 if (rx_status & MACE_RCVFS_OFLO) {
1158 lp->mace_stats.oflo++;
1160 if (rx_status & MACE_RCVFS_CLSN) {
1161 lp->mace_stats.clsn++;
1163 if (rx_status & MACE_RCVFS_FRAM) {
1164 lp->mace_stats.fram++;
1166 if (rx_status & MACE_RCVFS_FCS) {
1167 lp->mace_stats.fcs++;
1170 short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4;
1171 /* Auto Strip is off, always subtract 4 */
1172 struct sk_buff *skb;
1174 lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV);
1175 /* runt packet count */
1176 lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV);
1177 /* rcv collision count */
1179 DEBUG(3, " receiving packet size 0x%X rx_status"
1180 " 0x%X.\n", pkt_len, rx_status);
1182 skb = dev_alloc_skb(pkt_len+2);
1185 skb_reserve(skb, 2);
1186 insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1);
1188 *(skb_tail_pointer(skb) - 1) = inb(ioaddr + AM2150_RCV);
1189 skb->protocol = eth_type_trans(skb, dev);
1191 netif_rx(skb); /* Send the packet to the upper (protocol) layers. */
1193 dev->last_rx = jiffies;
1194 lp->linux_stats.rx_packets++;
1195 lp->linux_stats.rx_bytes += pkt_len;
1196 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1199 DEBUG(1, "%s: couldn't allocate a sk_buff of size"
1200 " %d.\n", dev->name, pkt_len);
1201 lp->linux_stats.rx_dropped++;
1204 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1210 /* ----------------------------------------------------------------------------
1212 ---------------------------------------------------------------------------- */
1213 static void pr_linux_stats(struct net_device_stats *pstats)
1215 DEBUG(2, "pr_linux_stats\n");
1216 DEBUG(2, " rx_packets=%-7ld tx_packets=%ld\n",
1217 (long)pstats->rx_packets, (long)pstats->tx_packets);
1218 DEBUG(2, " rx_errors=%-7ld tx_errors=%ld\n",
1219 (long)pstats->rx_errors, (long)pstats->tx_errors);
1220 DEBUG(2, " rx_dropped=%-7ld tx_dropped=%ld\n",
1221 (long)pstats->rx_dropped, (long)pstats->tx_dropped);
1222 DEBUG(2, " multicast=%-7ld collisions=%ld\n",
1223 (long)pstats->multicast, (long)pstats->collisions);
1225 DEBUG(2, " rx_length_errors=%-7ld rx_over_errors=%ld\n",
1226 (long)pstats->rx_length_errors, (long)pstats->rx_over_errors);
1227 DEBUG(2, " rx_crc_errors=%-7ld rx_frame_errors=%ld\n",
1228 (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors);
1229 DEBUG(2, " rx_fifo_errors=%-7ld rx_missed_errors=%ld\n",
1230 (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors);
1232 DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n",
1233 (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors);
1234 DEBUG(2, " tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n",
1235 (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors);
1236 DEBUG(2, " tx_window_errors=%ld\n",
1237 (long)pstats->tx_window_errors);
1238 } /* pr_linux_stats */
1240 /* ----------------------------------------------------------------------------
1242 ---------------------------------------------------------------------------- */
1243 static void pr_mace_stats(mace_statistics *pstats)
1245 DEBUG(2, "pr_mace_stats\n");
1247 DEBUG(2, " xmtsv=%-7d uflo=%d\n",
1248 pstats->xmtsv, pstats->uflo);
1249 DEBUG(2, " lcol=%-7d more=%d\n",
1250 pstats->lcol, pstats->more);
1251 DEBUG(2, " one=%-7d defer=%d\n",
1252 pstats->one, pstats->defer);
1253 DEBUG(2, " lcar=%-7d rtry=%d\n",
1254 pstats->lcar, pstats->rtry);
1257 DEBUG(2, " exdef=%-7d xmtrc=%d\n",
1258 pstats->exdef, pstats->xmtrc);
1260 /* RFS1--Receive Status (RCVSTS) */
1261 DEBUG(2, " oflo=%-7d clsn=%d\n",
1262 pstats->oflo, pstats->clsn);
1263 DEBUG(2, " fram=%-7d fcs=%d\n",
1264 pstats->fram, pstats->fcs);
1266 /* RFS2--Runt Packet Count (RNTPC) */
1267 /* RFS3--Receive Collision Count (RCVCC) */
1268 DEBUG(2, " rfs_rntpc=%-7d rfs_rcvcc=%d\n",
1269 pstats->rfs_rntpc, pstats->rfs_rcvcc);
1272 DEBUG(2, " jab=%-7d babl=%d\n",
1273 pstats->jab, pstats->babl);
1274 DEBUG(2, " cerr=%-7d rcvcco=%d\n",
1275 pstats->cerr, pstats->rcvcco);
1276 DEBUG(2, " rntpco=%-7d mpco=%d\n",
1277 pstats->rntpco, pstats->mpco);
1280 DEBUG(2, " mpc=%d\n", pstats->mpc);
1283 DEBUG(2, " rntpc=%d\n", pstats->rntpc);
1286 DEBUG(2, " rcvcc=%d\n", pstats->rcvcc);
1288 } /* pr_mace_stats */
1290 /* ----------------------------------------------------------------------------
1292 Update statistics. We change to register window 1, so this
1293 should be run single-threaded if the device is active. This is
1294 expected to be a rare operation, and it's simpler for the rest
1295 of the driver to assume that window 0 is always valid rather
1296 than use a special window-state variable.
1298 oflo & uflo should _never_ occur since it would mean the Xilinx
1299 was not able to transfer data between the MACE FIFO and the
1300 card's SRAM fast enough. If this happens, something is
1301 seriously wrong with the hardware.
1302 ---------------------------------------------------------------------------- */
1303 static void update_stats(kio_addr_t ioaddr, struct net_device *dev)
1305 mace_private *lp = netdev_priv(dev);
1307 lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC);
1308 lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC);
1309 lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC);
1310 /* At this point, mace_stats is fully updated for this call.
1311 We may now update the linux_stats. */
1313 /* The MACE has no equivalent for linux_stats field which are commented
1316 /* lp->linux_stats.multicast; */
1317 lp->linux_stats.collisions =
1318 lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc;
1319 /* Collision: The MACE may retry sending a packet 15 times
1320 before giving up. The retry count is in XMTRC.
1321 Does each retry constitute a collision?
1322 If so, why doesn't the RCVCC record these collisions? */
1324 /* detailed rx_errors: */
1325 lp->linux_stats.rx_length_errors =
1326 lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc;
1327 /* lp->linux_stats.rx_over_errors */
1328 lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs;
1329 lp->linux_stats.rx_frame_errors = lp->mace_stats.fram;
1330 lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo;
1331 lp->linux_stats.rx_missed_errors =
1332 lp->mace_stats.mpco * 256 + lp->mace_stats.mpc;
1334 /* detailed tx_errors */
1335 lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry;
1336 lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar;
1337 /* LCAR usually results from bad cabling. */
1338 lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo;
1339 lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr;
1340 /* lp->linux_stats.tx_window_errors; */
1343 } /* update_stats */
1345 /* ----------------------------------------------------------------------------
1347 Gathers ethernet statistics from the MACE chip.
1348 ---------------------------------------------------------------------------- */
1349 static struct net_device_stats *mace_get_stats(struct net_device *dev)
1351 mace_private *lp = netdev_priv(dev);
1353 update_stats(dev->base_addr, dev);
1355 DEBUG(1, "%s: updating the statistics.\n", dev->name);
1356 pr_linux_stats(&lp->linux_stats);
1357 pr_mace_stats(&lp->mace_stats);
1359 return &lp->linux_stats;
1360 } /* net_device_stats */
1362 /* ----------------------------------------------------------------------------
1364 Modified from Am79C90 data sheet.
1365 ---------------------------------------------------------------------------- */
1367 #ifdef BROKEN_MULTICAST
1369 static void updateCRC(int *CRC, int bit)
1376 }; /* CRC polynomial. poly[n] = coefficient of the x**n term of the
1377 CRC generator polynomial. */
1381 /* shift CRC and control bit (CRC[32]) */
1382 for (j = 32; j > 0; j--)
1386 /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */
1388 for (j = 0; j < 32; j++)
1392 /* ----------------------------------------------------------------------------
1394 Build logical address filter.
1395 Modified from Am79C90 data sheet.
1398 ladrf: logical address filter (contents initialized to 0)
1399 adr: ethernet address
1400 ---------------------------------------------------------------------------- */
1401 static void BuildLAF(int *ladrf, int *adr)
1403 int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */
1405 int i, byte; /* temporary array indices */
1406 int hashcode; /* the output object */
1410 for (byte = 0; byte < 6; byte++)
1411 for (i = 0; i < 8; i++)
1412 updateCRC(CRC, (adr[byte] >> i) & 1);
1415 for (i = 0; i < 6; i++)
1416 hashcode = (hashcode << 1) + CRC[i];
1418 byte = hashcode >> 3;
1419 ladrf[byte] |= (1 << (hashcode & 7));
1423 printk(KERN_DEBUG " adr =");
1424 for (i = 0; i < 6; i++)
1425 printk(" %02X", adr[i]);
1426 printk("\n" KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63]"
1428 for (i = 0; i < 8; i++)
1429 printk(" %02X", ladrf[i]);
1435 /* ----------------------------------------------------------------------------
1436 restore_multicast_list
1437 Restores the multicast filter for MACE chip to the last
1438 set_multicast_list() call.
1443 ---------------------------------------------------------------------------- */
1444 static void restore_multicast_list(struct net_device *dev)
1446 mace_private *lp = netdev_priv(dev);
1447 int num_addrs = lp->multicast_num_addrs;
1448 int *ladrf = lp->multicast_ladrf;
1449 kio_addr_t ioaddr = dev->base_addr;
1452 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n",
1453 dev->name, num_addrs);
1455 if (num_addrs > 0) {
1457 DEBUG(1, "Attempt to restore multicast list detected.\n");
1459 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR);
1460 /* Poll ADDRCHG bit */
1461 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
1463 /* Set LADRF register */
1464 for (i = 0; i < MACE_LADRF_LEN; i++)
1465 mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]);
1467 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL);
1468 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1470 } else if (num_addrs < 0) {
1472 /* Promiscuous mode: receive all packets */
1473 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1474 mace_write(lp, ioaddr, MACE_MACCC,
1475 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1481 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1482 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1485 } /* restore_multicast_list */
1487 /* ----------------------------------------------------------------------------
1489 Set or clear the multicast filter for this adaptor.
1492 num_addrs == -1 Promiscuous mode, receive all packets
1493 num_addrs == 0 Normal mode, clear multicast list
1494 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
1495 best-effort filtering.
1499 ---------------------------------------------------------------------------- */
1501 static void set_multicast_list(struct net_device *dev)
1503 mace_private *lp = netdev_priv(dev);
1504 int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */
1506 struct dev_mc_list *dmi = dev->mc_list;
1511 if (dev->mc_count != old) {
1512 old = dev->mc_count;
1513 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1519 /* Set multicast_num_addrs. */
1520 lp->multicast_num_addrs = dev->mc_count;
1522 /* Set multicast_ladrf. */
1523 if (num_addrs > 0) {
1524 /* Calculate multicast logical address filter */
1525 memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN);
1526 for (i = 0; i < dev->mc_count; i++) {
1527 memcpy(adr, dmi->dmi_addr, ETHER_ADDR_LEN);
1529 BuildLAF(lp->multicast_ladrf, adr);
1533 restore_multicast_list(dev);
1535 } /* set_multicast_list */
1537 #endif /* BROKEN_MULTICAST */
1539 static void restore_multicast_list(struct net_device *dev)
1541 kio_addr_t ioaddr = dev->base_addr;
1542 mace_private *lp = netdev_priv(dev);
1544 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", dev->name,
1545 lp->multicast_num_addrs);
1547 if (dev->flags & IFF_PROMISC) {
1548 /* Promiscuous mode: receive all packets */
1549 mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1550 mace_write(lp, ioaddr, MACE_MACCC,
1551 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1555 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1556 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1558 } /* restore_multicast_list */
1560 static void set_multicast_list(struct net_device *dev)
1562 mace_private *lp = netdev_priv(dev);
1567 if (dev->mc_count != old) {
1568 old = dev->mc_count;
1569 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1575 lp->multicast_num_addrs = dev->mc_count;
1576 restore_multicast_list(dev);
1578 } /* set_multicast_list */
1580 static struct pcmcia_device_id nmclan_ids[] = {
1581 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941),
1582 PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet+", 0xebf1d60, 0xad673aaf),
1585 MODULE_DEVICE_TABLE(pcmcia, nmclan_ids);
1587 static struct pcmcia_driver nmclan_cs_driver = {
1588 .owner = THIS_MODULE,
1590 .name = "nmclan_cs",
1592 .probe = nmclan_probe,
1593 .remove = nmclan_detach,
1594 .id_table = nmclan_ids,
1595 .suspend = nmclan_suspend,
1596 .resume = nmclan_resume,
1599 static int __init init_nmclan_cs(void)
1601 return pcmcia_register_driver(&nmclan_cs_driver);
1604 static void __exit exit_nmclan_cs(void)
1606 pcmcia_unregister_driver(&nmclan_cs_driver);
1609 module_init(init_nmclan_cs);
1610 module_exit(exit_nmclan_cs);