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 {
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 void nmclan_config(dev_link_t *link);
421 static void nmclan_release(dev_link_t *link);
423 static void nmclan_reset(struct net_device *dev);
424 static int mace_config(struct net_device *dev, struct ifmap *map);
425 static int mace_open(struct net_device *dev);
426 static int mace_close(struct net_device *dev);
427 static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev);
428 static void mace_tx_timeout(struct net_device *dev);
429 static irqreturn_t mace_interrupt(int irq, void *dev_id, struct pt_regs *regs);
430 static struct net_device_stats *mace_get_stats(struct net_device *dev);
431 static int mace_rx(struct net_device *dev, unsigned char RxCnt);
432 static void restore_multicast_list(struct net_device *dev);
433 static void set_multicast_list(struct net_device *dev);
434 static struct ethtool_ops netdev_ethtool_ops;
437 static void nmclan_detach(struct pcmcia_device *p_dev);
439 /* ----------------------------------------------------------------------------
441 Creates an "instance" of the driver, allocating local data
442 structures for one device. The device is registered with Card
444 ---------------------------------------------------------------------------- */
446 static int nmclan_attach(struct pcmcia_device *p_dev)
450 struct net_device *dev;
452 DEBUG(0, "nmclan_attach()\n");
453 DEBUG(1, "%s\n", rcsid);
455 /* Create new ethernet device */
456 dev = alloc_etherdev(sizeof(mace_private));
459 lp = netdev_priv(dev);
463 spin_lock_init(&lp->bank_lock);
464 link->io.NumPorts1 = 32;
465 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
466 link->io.IOAddrLines = 5;
467 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
468 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
469 link->irq.Handler = &mace_interrupt;
470 link->irq.Instance = dev;
471 link->conf.Attributes = CONF_ENABLE_IRQ;
473 link->conf.IntType = INT_MEMORY_AND_IO;
474 link->conf.ConfigIndex = 1;
475 link->conf.Present = PRESENT_OPTION;
477 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
479 SET_MODULE_OWNER(dev);
480 dev->hard_start_xmit = &mace_start_xmit;
481 dev->set_config = &mace_config;
482 dev->get_stats = &mace_get_stats;
483 dev->set_multicast_list = &set_multicast_list;
484 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
485 dev->open = &mace_open;
486 dev->stop = &mace_close;
487 #ifdef HAVE_TX_TIMEOUT
488 dev->tx_timeout = mace_tx_timeout;
489 dev->watchdog_timeo = TX_TIMEOUT;
492 link->handle = p_dev;
493 p_dev->instance = link;
495 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
499 } /* nmclan_attach */
501 /* ----------------------------------------------------------------------------
503 This deletes a driver "instance". The device is de-registered
504 with Card Services. If it has been released, all local data
505 structures are freed. Otherwise, the structures will be freed
506 when the device is released.
507 ---------------------------------------------------------------------------- */
509 static void nmclan_detach(struct pcmcia_device *p_dev)
511 dev_link_t *link = dev_to_instance(p_dev);
512 struct net_device *dev = link->priv;
514 DEBUG(0, "nmclan_detach(0x%p)\n", link);
517 unregister_netdev(dev);
519 if (link->state & DEV_CONFIG)
520 nmclan_release(link);
523 } /* nmclan_detach */
525 /* ----------------------------------------------------------------------------
527 Reads a MACE register. This is bank independent; however, the
528 caller must ensure that this call is not interruptable. We are
529 assuming that during normal operation, the MACE is always in
531 ---------------------------------------------------------------------------- */
532 static int mace_read(mace_private *lp, kio_addr_t ioaddr, int reg)
538 case 0: /* register 0-15 */
539 data = inb(ioaddr + AM2150_MACE_BASE + reg);
541 case 1: /* register 16-31 */
542 spin_lock_irqsave(&lp->bank_lock, flags);
544 data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
546 spin_unlock_irqrestore(&lp->bank_lock, flags);
549 return (data & 0xFF);
552 /* ----------------------------------------------------------------------------
554 Writes to a MACE register. This is bank independent; however,
555 the caller must ensure that this call is not interruptable. We
556 are assuming that during normal operation, the MACE is always in
558 ---------------------------------------------------------------------------- */
559 static void mace_write(mace_private *lp, kio_addr_t ioaddr, int reg, int data)
564 case 0: /* register 0-15 */
565 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg);
567 case 1: /* register 16-31 */
568 spin_lock_irqsave(&lp->bank_lock, flags);
570 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
572 spin_unlock_irqrestore(&lp->bank_lock, flags);
577 /* ----------------------------------------------------------------------------
579 Resets the MACE chip.
580 ---------------------------------------------------------------------------- */
581 static int mace_init(mace_private *lp, kio_addr_t ioaddr, char *enet_addr)
586 /* MACE Software reset */
587 mace_write(lp, ioaddr, MACE_BIUCC, 1);
588 while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) {
589 /* Wait for reset bit to be cleared automatically after <= 200ns */;
592 printk(KERN_ERR "mace: reset failed, card removed ?\n");
597 mace_write(lp, ioaddr, MACE_BIUCC, 0);
599 /* The Am2150 requires that the MACE FIFOs operate in burst mode. */
600 mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F);
602 mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */
603 mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */
606 * Bit 2-1 PORTSEL[1-0] Port Select.
609 * 10 DAI Port (reserved in Am2150)
611 * For this card, only the first two are valid.
612 * So, PLSCC should be set to
615 * Or just set ASEL in PHYCC below!
619 mace_write(lp, ioaddr, MACE_PLSCC, 0x02);
622 mace_write(lp, ioaddr, MACE_PLSCC, 0x00);
625 mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4);
626 /* ASEL Auto Select. When set, the PORTSEL[1-0] bits are overridden,
627 and the MACE device will automatically select the operating media
632 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR);
633 /* Poll ADDRCHG bit */
635 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
639 printk(KERN_ERR "mace: ADDRCHG timeout, card removed ?\n");
643 /* Set PADR register */
644 for (i = 0; i < ETHER_ADDR_LEN; i++)
645 mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]);
647 /* MAC Configuration Control Register should be written last */
648 /* Let set_multicast_list set this. */
649 /* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */
650 mace_write(lp, ioaddr, MACE_MACCC, 0x00);
654 /* ----------------------------------------------------------------------------
656 This routine is scheduled to run after a CARD_INSERTION event
657 is received, to configure the PCMCIA socket, and to make the
658 ethernet device available to the system.
659 ---------------------------------------------------------------------------- */
661 #define CS_CHECK(fn, ret) \
662 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
664 static void nmclan_config(dev_link_t *link)
666 client_handle_t handle = link->handle;
667 struct net_device *dev = link->priv;
668 mace_private *lp = netdev_priv(dev);
672 int i, last_ret, last_fn;
675 DEBUG(0, "nmclan_config(0x%p)\n", link);
677 tuple.Attributes = 0;
678 tuple.TupleData = buf;
679 tuple.TupleDataMax = 64;
680 tuple.TupleOffset = 0;
681 tuple.DesiredTuple = CISTPL_CONFIG;
682 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
683 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
684 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
685 link->conf.ConfigBase = parse.config.base;
688 link->state |= DEV_CONFIG;
690 CS_CHECK(RequestIO, pcmcia_request_io(handle, &link->io));
691 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
692 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
693 dev->irq = link->irq.AssignedIRQ;
694 dev->base_addr = link->io.BasePort1;
696 ioaddr = dev->base_addr;
698 /* Read the ethernet address from the CIS. */
699 tuple.DesiredTuple = 0x80 /* CISTPL_CFTABLE_ENTRY_MISC */;
700 tuple.TupleData = buf;
701 tuple.TupleDataMax = 64;
702 tuple.TupleOffset = 0;
703 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
704 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
705 memcpy(dev->dev_addr, tuple.TupleData, ETHER_ADDR_LEN);
707 /* Verify configuration by reading the MACE ID. */
711 sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL);
712 sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH);
713 if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) {
714 DEBUG(0, "nmclan_cs configured: mace id=%x %x\n",
717 printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should"
718 " be 0x40 0x?9\n", sig[0], sig[1]);
719 link->state &= ~DEV_CONFIG_PENDING;
724 if(mace_init(lp, ioaddr, dev->dev_addr) == -1)
727 /* The if_port symbol can be set when the module is loaded */
729 dev->if_port = if_port;
731 printk(KERN_NOTICE "nmclan_cs: invalid if_port requested\n");
733 link->dev = &lp->node;
734 link->state &= ~DEV_CONFIG_PENDING;
735 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
737 i = register_netdev(dev);
739 printk(KERN_NOTICE "nmclan_cs: register_netdev() failed\n");
744 strcpy(lp->node.dev_name, dev->name);
746 printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port, hw_addr ",
747 dev->name, dev->base_addr, dev->irq, if_names[dev->if_port]);
748 for (i = 0; i < 6; i++)
749 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
753 cs_error(link->handle, last_fn, last_ret);
755 nmclan_release(link);
758 } /* nmclan_config */
760 /* ----------------------------------------------------------------------------
762 After a card is removed, nmclan_release() will unregister the
763 net device, and release the PCMCIA configuration. If the device
764 is still open, this will be postponed until it is closed.
765 ---------------------------------------------------------------------------- */
766 static void nmclan_release(dev_link_t *link)
769 DEBUG(0, "nmclan_release(0x%p)\n", link);
771 pcmcia_release_configuration(link->handle);
772 pcmcia_release_io(link->handle, &link->io);
773 pcmcia_release_irq(link->handle, &link->irq);
775 link->state &= ~DEV_CONFIG;
778 static int nmclan_suspend(struct pcmcia_device *p_dev)
780 dev_link_t *link = dev_to_instance(p_dev);
781 struct net_device *dev = link->priv;
783 link->state |= DEV_SUSPEND;
784 if (link->state & DEV_CONFIG) {
786 netif_device_detach(dev);
787 pcmcia_release_configuration(link->handle);
794 static int nmclan_resume(struct pcmcia_device *p_dev)
796 dev_link_t *link = dev_to_instance(p_dev);
797 struct net_device *dev = link->priv;
799 link->state &= ~DEV_SUSPEND;
800 if (link->state & DEV_CONFIG) {
801 pcmcia_request_configuration(link->handle, &link->conf);
804 netif_device_attach(dev);
812 /* ----------------------------------------------------------------------------
814 Reset and restore all of the Xilinx and MACE registers.
815 ---------------------------------------------------------------------------- */
816 static void nmclan_reset(struct net_device *dev)
818 mace_private *lp = netdev_priv(dev);
821 dev_link_t *link = &lp->link;
825 /* Save original COR value */
827 reg.Action = CS_READ;
828 reg.Offset = CISREG_COR;
830 pcmcia_access_configuration_register(link->handle, ®);
831 OrigCorValue = reg.Value;
834 reg.Action = CS_WRITE;
835 reg.Offset = CISREG_COR;
836 DEBUG(1, "nmclan_reset: OrigCorValue=0x%lX, resetting...\n",
838 reg.Value = COR_SOFT_RESET;
839 pcmcia_access_configuration_register(link->handle, ®);
840 /* Need to wait for 20 ms for PCMCIA to finish reset. */
842 /* Restore original COR configuration index */
843 reg.Value = COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK);
844 pcmcia_access_configuration_register(link->handle, ®);
845 /* Xilinx is now completely reset along with the MACE chip. */
846 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
848 #endif /* #if RESET_XILINX */
850 /* Xilinx is now completely reset along with the MACE chip. */
851 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
853 /* Reinitialize the MACE chip for operation. */
854 mace_init(lp, dev->base_addr, dev->dev_addr);
855 mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT);
857 /* Restore the multicast list and enable TX and RX. */
858 restore_multicast_list(dev);
861 /* ----------------------------------------------------------------------------
863 [Someone tell me what this is supposed to do? Is if_port a defined
864 standard? If so, there should be defines to indicate 1=10Base-T,
865 2=10Base-2, etc. including limited automatic detection.]
866 ---------------------------------------------------------------------------- */
867 static int mace_config(struct net_device *dev, struct ifmap *map)
869 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
870 if (map->port <= 2) {
871 dev->if_port = map->port;
872 printk(KERN_INFO "%s: switched to %s port\n", dev->name,
873 if_names[dev->if_port]);
880 /* ----------------------------------------------------------------------------
883 ---------------------------------------------------------------------------- */
884 static int mace_open(struct net_device *dev)
886 kio_addr_t ioaddr = dev->base_addr;
887 mace_private *lp = netdev_priv(dev);
888 dev_link_t *link = &lp->link;
897 netif_start_queue(dev);
900 return 0; /* Always succeed */
903 /* ----------------------------------------------------------------------------
905 Closes device driver.
906 ---------------------------------------------------------------------------- */
907 static int mace_close(struct net_device *dev)
909 kio_addr_t ioaddr = dev->base_addr;
910 mace_private *lp = netdev_priv(dev);
911 dev_link_t *link = &lp->link;
913 DEBUG(2, "%s: shutting down ethercard.\n", dev->name);
915 /* Mask off all interrupts from the MACE chip. */
916 outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR);
919 netif_stop_queue(dev);
924 static void netdev_get_drvinfo(struct net_device *dev,
925 struct ethtool_drvinfo *info)
927 strcpy(info->driver, DRV_NAME);
928 strcpy(info->version, DRV_VERSION);
929 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
933 static u32 netdev_get_msglevel(struct net_device *dev)
938 static void netdev_set_msglevel(struct net_device *dev, u32 level)
942 #endif /* PCMCIA_DEBUG */
944 static struct ethtool_ops netdev_ethtool_ops = {
945 .get_drvinfo = netdev_get_drvinfo,
947 .get_msglevel = netdev_get_msglevel,
948 .set_msglevel = netdev_set_msglevel,
949 #endif /* PCMCIA_DEBUG */
952 /* ----------------------------------------------------------------------------
954 This routine begins the packet transmit function. When completed,
955 it will generate a transmit interrupt.
957 According to /usr/src/linux/net/inet/dev.c, if _start_xmit
958 returns 0, the "packet is now solely the responsibility of the
959 driver." If _start_xmit returns non-zero, the "transmission
960 failed, put skb back into a list."
961 ---------------------------------------------------------------------------- */
963 static void mace_tx_timeout(struct net_device *dev)
965 mace_private *lp = netdev_priv(dev);
966 dev_link_t *link = &lp->link;
968 printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name);
970 printk("resetting card\n");
971 pcmcia_reset_card(link->handle, NULL);
972 #else /* #if RESET_ON_TIMEOUT */
973 printk("NOT resetting card\n");
974 #endif /* #if RESET_ON_TIMEOUT */
975 dev->trans_start = jiffies;
976 netif_wake_queue(dev);
979 static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev)
981 mace_private *lp = netdev_priv(dev);
982 kio_addr_t ioaddr = dev->base_addr;
984 netif_stop_queue(dev);
986 DEBUG(3, "%s: mace_start_xmit(length = %ld) called.\n",
987 dev->name, (long)skb->len);
989 #if (!TX_INTERRUPTABLE)
990 /* Disable MACE TX interrupts. */
991 outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT,
992 ioaddr + AM2150_MACE_BASE + MACE_IMR);
993 lp->tx_irq_disabled=1;
994 #endif /* #if (!TX_INTERRUPTABLE) */
997 /* This block must not be interrupted by another transmit request!
998 mace_tx_timeout will take care of timer-based retransmissions from
999 the upper layers. The interrupt handler is guaranteed never to
1000 service a transmit interrupt while we are in here.
1003 lp->linux_stats.tx_bytes += skb->len;
1004 lp->tx_free_frames--;
1006 /* WARNING: Write the _exact_ number of bytes written in the header! */
1007 /* Put out the word header [must be an outw()] . . . */
1008 outw(skb->len, ioaddr + AM2150_XMT);
1009 /* . . . and the packet [may be any combination of outw() and outb()] */
1010 outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1);
1012 /* Odd byte transfer */
1013 outb(skb->data[skb->len-1], ioaddr + AM2150_XMT);
1016 dev->trans_start = jiffies;
1019 if (lp->tx_free_frames > 0)
1020 netif_start_queue(dev);
1021 #endif /* #if MULTI_TX */
1024 #if (!TX_INTERRUPTABLE)
1025 /* Re-enable MACE TX interrupts. */
1026 lp->tx_irq_disabled=0;
1027 outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR);
1028 #endif /* #if (!TX_INTERRUPTABLE) */
1033 } /* mace_start_xmit */
1035 /* ----------------------------------------------------------------------------
1037 The interrupt handler.
1038 ---------------------------------------------------------------------------- */
1039 static irqreturn_t mace_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1041 struct net_device *dev = (struct net_device *) dev_id;
1042 mace_private *lp = netdev_priv(dev);
1043 kio_addr_t ioaddr = dev->base_addr;
1045 int IntrCnt = MACE_MAX_IR_ITERATIONS;
1048 DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.\n",
1053 if (lp->tx_irq_disabled) {
1055 (lp->tx_irq_disabled?
1056 KERN_NOTICE "%s: Interrupt with tx_irq_disabled "
1057 "[isr=%02X, imr=%02X]\n":
1058 KERN_NOTICE "%s: Re-entering the interrupt handler "
1059 "[isr=%02X, imr=%02X]\n"),
1061 inb(ioaddr + AM2150_MACE_BASE + MACE_IR),
1062 inb(ioaddr + AM2150_MACE_BASE + MACE_IMR)
1064 /* WARNING: MACE_IR has been read! */
1068 if (!netif_device_present(dev)) {
1069 DEBUG(2, "%s: interrupt from dead card\n", dev->name);
1074 /* WARNING: MACE_IR is a READ/CLEAR port! */
1075 status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR);
1077 DEBUG(3, "mace_interrupt: irq 0x%X status 0x%X.\n", irq, status);
1079 if (status & MACE_IR_RCVINT) {
1080 mace_rx(dev, MACE_MAX_RX_ITERATIONS);
1083 if (status & MACE_IR_XMTINT) {
1084 unsigned char fifofc;
1085 unsigned char xmtrc;
1086 unsigned char xmtfs;
1088 fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC);
1089 if ((fifofc & MACE_FIFOFC_XMTFC)==0) {
1090 lp->linux_stats.tx_errors++;
1091 outb(0xFF, ioaddr + AM2150_XMT_SKIP);
1094 /* Transmit Retry Count (XMTRC, reg 4) */
1095 xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC);
1096 if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++;
1097 lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC);
1100 (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) &
1101 MACE_XMTFS_XMTSV /* Transmit Status Valid */
1103 lp->mace_stats.xmtsv++;
1105 if (xmtfs & ~MACE_XMTFS_XMTSV) {
1106 if (xmtfs & MACE_XMTFS_UFLO) {
1107 /* Underflow. Indicates that the Transmit FIFO emptied before
1108 the end of frame was reached. */
1109 lp->mace_stats.uflo++;
1111 if (xmtfs & MACE_XMTFS_LCOL) {
1112 /* Late Collision */
1113 lp->mace_stats.lcol++;
1115 if (xmtfs & MACE_XMTFS_MORE) {
1116 /* MORE than one retry was needed */
1117 lp->mace_stats.more++;
1119 if (xmtfs & MACE_XMTFS_ONE) {
1120 /* Exactly ONE retry occurred */
1121 lp->mace_stats.one++;
1123 if (xmtfs & MACE_XMTFS_DEFER) {
1124 /* Transmission was defered */
1125 lp->mace_stats.defer++;
1127 if (xmtfs & MACE_XMTFS_LCAR) {
1128 /* Loss of carrier */
1129 lp->mace_stats.lcar++;
1131 if (xmtfs & MACE_XMTFS_RTRY) {
1132 /* Retry error: transmit aborted after 16 attempts */
1133 lp->mace_stats.rtry++;
1135 } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */
1137 } /* if (xmtfs & MACE_XMTFS_XMTSV) */
1139 lp->linux_stats.tx_packets++;
1140 lp->tx_free_frames++;
1141 netif_wake_queue(dev);
1142 } /* if (status & MACE_IR_XMTINT) */
1144 if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) {
1145 if (status & MACE_IR_JAB) {
1146 /* Jabber Error. Excessive transmit duration (20-150ms). */
1147 lp->mace_stats.jab++;
1149 if (status & MACE_IR_BABL) {
1150 /* Babble Error. >1518 bytes transmitted. */
1151 lp->mace_stats.babl++;
1153 if (status & MACE_IR_CERR) {
1154 /* Collision Error. CERR indicates the absence of the
1155 Signal Quality Error Test message after a packet
1157 lp->mace_stats.cerr++;
1159 if (status & MACE_IR_RCVCCO) {
1160 /* Receive Collision Count Overflow; */
1161 lp->mace_stats.rcvcco++;
1163 if (status & MACE_IR_RNTPCO) {
1164 /* Runt Packet Count Overflow */
1165 lp->mace_stats.rntpco++;
1167 if (status & MACE_IR_MPCO) {
1168 /* Missed Packet Count Overflow */
1169 lp->mace_stats.mpco++;
1171 } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */
1173 } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt));
1176 } /* mace_interrupt */
1178 /* ----------------------------------------------------------------------------
1181 ---------------------------------------------------------------------------- */
1182 static int mace_rx(struct net_device *dev, unsigned char RxCnt)
1184 mace_private *lp = netdev_priv(dev);
1185 kio_addr_t ioaddr = dev->base_addr;
1186 unsigned char rx_framecnt;
1187 unsigned short rx_status;
1190 ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) &&
1191 (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */
1194 rx_status = inw(ioaddr + AM2150_RCV);
1196 DEBUG(3, "%s: in mace_rx(), framecnt 0x%X, rx_status"
1197 " 0x%X.\n", dev->name, rx_framecnt, rx_status);
1199 if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */
1200 lp->linux_stats.rx_errors++;
1201 if (rx_status & MACE_RCVFS_OFLO) {
1202 lp->mace_stats.oflo++;
1204 if (rx_status & MACE_RCVFS_CLSN) {
1205 lp->mace_stats.clsn++;
1207 if (rx_status & MACE_RCVFS_FRAM) {
1208 lp->mace_stats.fram++;
1210 if (rx_status & MACE_RCVFS_FCS) {
1211 lp->mace_stats.fcs++;
1214 short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4;
1215 /* Auto Strip is off, always subtract 4 */
1216 struct sk_buff *skb;
1218 lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV);
1219 /* runt packet count */
1220 lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV);
1221 /* rcv collision count */
1223 DEBUG(3, " receiving packet size 0x%X rx_status"
1224 " 0x%X.\n", pkt_len, rx_status);
1226 skb = dev_alloc_skb(pkt_len+2);
1231 skb_reserve(skb, 2);
1232 insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1);
1234 *(skb->tail-1) = inb(ioaddr + AM2150_RCV);
1235 skb->protocol = eth_type_trans(skb, dev);
1237 netif_rx(skb); /* Send the packet to the upper (protocol) layers. */
1239 dev->last_rx = jiffies;
1240 lp->linux_stats.rx_packets++;
1241 lp->linux_stats.rx_bytes += skb->len;
1242 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1245 DEBUG(1, "%s: couldn't allocate a sk_buff of size"
1246 " %d.\n", dev->name, pkt_len);
1247 lp->linux_stats.rx_dropped++;
1250 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1256 /* ----------------------------------------------------------------------------
1258 ---------------------------------------------------------------------------- */
1259 static void pr_linux_stats(struct net_device_stats *pstats)
1261 DEBUG(2, "pr_linux_stats\n");
1262 DEBUG(2, " rx_packets=%-7ld tx_packets=%ld\n",
1263 (long)pstats->rx_packets, (long)pstats->tx_packets);
1264 DEBUG(2, " rx_errors=%-7ld tx_errors=%ld\n",
1265 (long)pstats->rx_errors, (long)pstats->tx_errors);
1266 DEBUG(2, " rx_dropped=%-7ld tx_dropped=%ld\n",
1267 (long)pstats->rx_dropped, (long)pstats->tx_dropped);
1268 DEBUG(2, " multicast=%-7ld collisions=%ld\n",
1269 (long)pstats->multicast, (long)pstats->collisions);
1271 DEBUG(2, " rx_length_errors=%-7ld rx_over_errors=%ld\n",
1272 (long)pstats->rx_length_errors, (long)pstats->rx_over_errors);
1273 DEBUG(2, " rx_crc_errors=%-7ld rx_frame_errors=%ld\n",
1274 (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors);
1275 DEBUG(2, " rx_fifo_errors=%-7ld rx_missed_errors=%ld\n",
1276 (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors);
1278 DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n",
1279 (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors);
1280 DEBUG(2, " tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n",
1281 (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors);
1282 DEBUG(2, " tx_window_errors=%ld\n",
1283 (long)pstats->tx_window_errors);
1284 } /* pr_linux_stats */
1286 /* ----------------------------------------------------------------------------
1288 ---------------------------------------------------------------------------- */
1289 static void pr_mace_stats(mace_statistics *pstats)
1291 DEBUG(2, "pr_mace_stats\n");
1293 DEBUG(2, " xmtsv=%-7d uflo=%d\n",
1294 pstats->xmtsv, pstats->uflo);
1295 DEBUG(2, " lcol=%-7d more=%d\n",
1296 pstats->lcol, pstats->more);
1297 DEBUG(2, " one=%-7d defer=%d\n",
1298 pstats->one, pstats->defer);
1299 DEBUG(2, " lcar=%-7d rtry=%d\n",
1300 pstats->lcar, pstats->rtry);
1303 DEBUG(2, " exdef=%-7d xmtrc=%d\n",
1304 pstats->exdef, pstats->xmtrc);
1306 /* RFS1--Receive Status (RCVSTS) */
1307 DEBUG(2, " oflo=%-7d clsn=%d\n",
1308 pstats->oflo, pstats->clsn);
1309 DEBUG(2, " fram=%-7d fcs=%d\n",
1310 pstats->fram, pstats->fcs);
1312 /* RFS2--Runt Packet Count (RNTPC) */
1313 /* RFS3--Receive Collision Count (RCVCC) */
1314 DEBUG(2, " rfs_rntpc=%-7d rfs_rcvcc=%d\n",
1315 pstats->rfs_rntpc, pstats->rfs_rcvcc);
1318 DEBUG(2, " jab=%-7d babl=%d\n",
1319 pstats->jab, pstats->babl);
1320 DEBUG(2, " cerr=%-7d rcvcco=%d\n",
1321 pstats->cerr, pstats->rcvcco);
1322 DEBUG(2, " rntpco=%-7d mpco=%d\n",
1323 pstats->rntpco, pstats->mpco);
1326 DEBUG(2, " mpc=%d\n", pstats->mpc);
1329 DEBUG(2, " rntpc=%d\n", pstats->rntpc);
1332 DEBUG(2, " rcvcc=%d\n", pstats->rcvcc);
1334 } /* pr_mace_stats */
1336 /* ----------------------------------------------------------------------------
1338 Update statistics. We change to register window 1, so this
1339 should be run single-threaded if the device is active. This is
1340 expected to be a rare operation, and it's simpler for the rest
1341 of the driver to assume that window 0 is always valid rather
1342 than use a special window-state variable.
1344 oflo & uflo should _never_ occur since it would mean the Xilinx
1345 was not able to transfer data between the MACE FIFO and the
1346 card's SRAM fast enough. If this happens, something is
1347 seriously wrong with the hardware.
1348 ---------------------------------------------------------------------------- */
1349 static void update_stats(kio_addr_t ioaddr, struct net_device *dev)
1351 mace_private *lp = netdev_priv(dev);
1353 lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC);
1354 lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC);
1355 lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC);
1356 /* At this point, mace_stats is fully updated for this call.
1357 We may now update the linux_stats. */
1359 /* The MACE has no equivalent for linux_stats field which are commented
1362 /* lp->linux_stats.multicast; */
1363 lp->linux_stats.collisions =
1364 lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc;
1365 /* Collision: The MACE may retry sending a packet 15 times
1366 before giving up. The retry count is in XMTRC.
1367 Does each retry constitute a collision?
1368 If so, why doesn't the RCVCC record these collisions? */
1370 /* detailed rx_errors: */
1371 lp->linux_stats.rx_length_errors =
1372 lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc;
1373 /* lp->linux_stats.rx_over_errors */
1374 lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs;
1375 lp->linux_stats.rx_frame_errors = lp->mace_stats.fram;
1376 lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo;
1377 lp->linux_stats.rx_missed_errors =
1378 lp->mace_stats.mpco * 256 + lp->mace_stats.mpc;
1380 /* detailed tx_errors */
1381 lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry;
1382 lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar;
1383 /* LCAR usually results from bad cabling. */
1384 lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo;
1385 lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr;
1386 /* lp->linux_stats.tx_window_errors; */
1389 } /* update_stats */
1391 /* ----------------------------------------------------------------------------
1393 Gathers ethernet statistics from the MACE chip.
1394 ---------------------------------------------------------------------------- */
1395 static struct net_device_stats *mace_get_stats(struct net_device *dev)
1397 mace_private *lp = netdev_priv(dev);
1399 update_stats(dev->base_addr, dev);
1401 DEBUG(1, "%s: updating the statistics.\n", dev->name);
1402 pr_linux_stats(&lp->linux_stats);
1403 pr_mace_stats(&lp->mace_stats);
1405 return &lp->linux_stats;
1406 } /* net_device_stats */
1408 /* ----------------------------------------------------------------------------
1410 Modified from Am79C90 data sheet.
1411 ---------------------------------------------------------------------------- */
1413 #ifdef BROKEN_MULTICAST
1415 static void updateCRC(int *CRC, int bit)
1422 }; /* CRC polynomial. poly[n] = coefficient of the x**n term of the
1423 CRC generator polynomial. */
1427 /* shift CRC and control bit (CRC[32]) */
1428 for (j = 32; j > 0; j--)
1432 /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */
1434 for (j = 0; j < 32; j++)
1438 /* ----------------------------------------------------------------------------
1440 Build logical address filter.
1441 Modified from Am79C90 data sheet.
1444 ladrf: logical address filter (contents initialized to 0)
1445 adr: ethernet address
1446 ---------------------------------------------------------------------------- */
1447 static void BuildLAF(int *ladrf, int *adr)
1449 int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */
1451 int i, byte; /* temporary array indices */
1452 int hashcode; /* the output object */
1456 for (byte = 0; byte < 6; byte++)
1457 for (i = 0; i < 8; i++)
1458 updateCRC(CRC, (adr[byte] >> i) & 1);
1461 for (i = 0; i < 6; i++)
1462 hashcode = (hashcode << 1) + CRC[i];
1464 byte = hashcode >> 3;
1465 ladrf[byte] |= (1 << (hashcode & 7));
1469 printk(KERN_DEBUG " adr =");
1470 for (i = 0; i < 6; i++)
1471 printk(" %02X", adr[i]);
1472 printk("\n" KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63]"
1474 for (i = 0; i < 8; i++)
1475 printk(" %02X", ladrf[i]);
1481 /* ----------------------------------------------------------------------------
1482 restore_multicast_list
1483 Restores the multicast filter for MACE chip to the last
1484 set_multicast_list() call.
1489 ---------------------------------------------------------------------------- */
1490 static void restore_multicast_list(struct net_device *dev)
1492 mace_private *lp = netdev_priv(dev);
1493 int num_addrs = lp->multicast_num_addrs;
1494 int *ladrf = lp->multicast_ladrf;
1495 kio_addr_t ioaddr = dev->base_addr;
1498 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n",
1499 dev->name, num_addrs);
1501 if (num_addrs > 0) {
1503 DEBUG(1, "Attempt to restore multicast list detected.\n");
1505 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR);
1506 /* Poll ADDRCHG bit */
1507 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
1509 /* Set LADRF register */
1510 for (i = 0; i < MACE_LADRF_LEN; i++)
1511 mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]);
1513 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL);
1514 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1516 } else if (num_addrs < 0) {
1518 /* Promiscuous mode: receive all packets */
1519 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1520 mace_write(lp, ioaddr, MACE_MACCC,
1521 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1527 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1528 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1531 } /* restore_multicast_list */
1533 /* ----------------------------------------------------------------------------
1535 Set or clear the multicast filter for this adaptor.
1538 num_addrs == -1 Promiscuous mode, receive all packets
1539 num_addrs == 0 Normal mode, clear multicast list
1540 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
1541 best-effort filtering.
1545 ---------------------------------------------------------------------------- */
1547 static void set_multicast_list(struct net_device *dev)
1549 mace_private *lp = netdev_priv(dev);
1550 int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */
1552 struct dev_mc_list *dmi = dev->mc_list;
1557 if (dev->mc_count != old) {
1558 old = dev->mc_count;
1559 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1565 /* Set multicast_num_addrs. */
1566 lp->multicast_num_addrs = dev->mc_count;
1568 /* Set multicast_ladrf. */
1569 if (num_addrs > 0) {
1570 /* Calculate multicast logical address filter */
1571 memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN);
1572 for (i = 0; i < dev->mc_count; i++) {
1573 memcpy(adr, dmi->dmi_addr, ETHER_ADDR_LEN);
1575 BuildLAF(lp->multicast_ladrf, adr);
1579 restore_multicast_list(dev);
1581 } /* set_multicast_list */
1583 #endif /* BROKEN_MULTICAST */
1585 static void restore_multicast_list(struct net_device *dev)
1587 kio_addr_t ioaddr = dev->base_addr;
1588 mace_private *lp = netdev_priv(dev);
1590 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", dev->name,
1591 lp->multicast_num_addrs);
1593 if (dev->flags & IFF_PROMISC) {
1594 /* Promiscuous mode: receive all packets */
1595 mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1596 mace_write(lp, ioaddr, MACE_MACCC,
1597 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1601 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1602 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1604 } /* restore_multicast_list */
1606 static void set_multicast_list(struct net_device *dev)
1608 mace_private *lp = netdev_priv(dev);
1613 if (dev->mc_count != old) {
1614 old = dev->mc_count;
1615 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1621 lp->multicast_num_addrs = dev->mc_count;
1622 restore_multicast_list(dev);
1624 } /* set_multicast_list */
1626 static struct pcmcia_device_id nmclan_ids[] = {
1627 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941),
1628 PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet+", 0xebf1d60, 0xad673aaf),
1631 MODULE_DEVICE_TABLE(pcmcia, nmclan_ids);
1633 static struct pcmcia_driver nmclan_cs_driver = {
1634 .owner = THIS_MODULE,
1636 .name = "nmclan_cs",
1638 .probe = nmclan_attach,
1639 .remove = nmclan_detach,
1640 .id_table = nmclan_ids,
1641 .suspend = nmclan_suspend,
1642 .resume = nmclan_resume,
1645 static int __init init_nmclan_cs(void)
1647 return pcmcia_register_driver(&nmclan_cs_driver);
1650 static void __exit exit_nmclan_cs(void)
1652 pcmcia_unregister_driver(&nmclan_cs_driver);
1655 module_init(init_nmclan_cs);
1656 module_exit(exit_nmclan_cs);