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/version.h>
150 #include <pcmcia/cs_types.h>
151 #include <pcmcia/cs.h>
152 #include <pcmcia/cisreg.h>
153 #include <pcmcia/cistpl.h>
154 #include <pcmcia/ds.h>
156 #include <asm/uaccess.h>
158 #include <asm/system.h>
160 /* ----------------------------------------------------------------------------
162 ---------------------------------------------------------------------------- */
164 #define ETHER_ADDR_LEN ETH_ALEN
165 /* 6 bytes in an Ethernet Address */
166 #define MACE_LADRF_LEN 8
167 /* 8 bytes in Logical Address Filter */
169 /* Loop Control Defines */
170 #define MACE_MAX_IR_ITERATIONS 10
171 #define MACE_MAX_RX_ITERATIONS 12
173 TBD: Dean brought this up, and I assumed the hardware would
176 If MACE_MAX_RX_ITERATIONS is > 1, rx_framecnt may still be
177 non-zero when the isr exits. We may not get another interrupt
178 to process the remaining packets for some time.
182 The Am2150 has a Xilinx XC3042 field programmable gate array (FPGA)
183 which manages the interface between the MACE and the PCMCIA bus. It
184 also includes buffer management for the 32K x 8 SRAM to control up to
185 four transmit and 12 receive frames at a time.
187 #define AM2150_MAX_TX_FRAMES 4
188 #define AM2150_MAX_RX_FRAMES 12
190 /* Am2150 Ethernet Card I/O Mapping */
191 #define AM2150_RCV 0x00
192 #define AM2150_XMT 0x04
193 #define AM2150_XMT_SKIP 0x09
194 #define AM2150_RCV_NEXT 0x0A
195 #define AM2150_RCV_FRAME_COUNT 0x0B
196 #define AM2150_MACE_BANK 0x0C
197 #define AM2150_MACE_BASE 0x10
200 #define MACE_RCVFIFO 0
201 #define MACE_XMTFIFO 1
207 #define MACE_FIFOFC 7
211 #define MACE_BIUCC 11
212 #define MACE_FIFOCC 12
213 #define MACE_MACCC 13
214 #define MACE_PLSCC 14
215 #define MACE_PHYCC 15
216 #define MACE_CHIPIDL 16
217 #define MACE_CHIPIDH 17
220 #define MACE_LADRF 20
226 #define MACE_RNTPC 26
227 #define MACE_RCVCC 27
234 #define MACE_XMTRC_EXDEF 0x80
235 #define MACE_XMTRC_XMTRC 0x0F
237 #define MACE_XMTFS_XMTSV 0x80
238 #define MACE_XMTFS_UFLO 0x40
239 #define MACE_XMTFS_LCOL 0x20
240 #define MACE_XMTFS_MORE 0x10
241 #define MACE_XMTFS_ONE 0x08
242 #define MACE_XMTFS_DEFER 0x04
243 #define MACE_XMTFS_LCAR 0x02
244 #define MACE_XMTFS_RTRY 0x01
246 #define MACE_RCVFS_RCVSTS 0xF000
247 #define MACE_RCVFS_OFLO 0x8000
248 #define MACE_RCVFS_CLSN 0x4000
249 #define MACE_RCVFS_FRAM 0x2000
250 #define MACE_RCVFS_FCS 0x1000
252 #define MACE_FIFOFC_RCVFC 0xF0
253 #define MACE_FIFOFC_XMTFC 0x0F
255 #define MACE_IR_JAB 0x80
256 #define MACE_IR_BABL 0x40
257 #define MACE_IR_CERR 0x20
258 #define MACE_IR_RCVCCO 0x10
259 #define MACE_IR_RNTPCO 0x08
260 #define MACE_IR_MPCO 0x04
261 #define MACE_IR_RCVINT 0x02
262 #define MACE_IR_XMTINT 0x01
264 #define MACE_MACCC_PROM 0x80
265 #define MACE_MACCC_DXMT2PD 0x40
266 #define MACE_MACCC_EMBA 0x20
267 #define MACE_MACCC_RESERVED 0x10
268 #define MACE_MACCC_DRCVPA 0x08
269 #define MACE_MACCC_DRCVBC 0x04
270 #define MACE_MACCC_ENXMT 0x02
271 #define MACE_MACCC_ENRCV 0x01
273 #define MACE_PHYCC_LNKFL 0x80
274 #define MACE_PHYCC_DLNKTST 0x40
275 #define MACE_PHYCC_REVPOL 0x20
276 #define MACE_PHYCC_DAPC 0x10
277 #define MACE_PHYCC_LRT 0x08
278 #define MACE_PHYCC_ASEL 0x04
279 #define MACE_PHYCC_RWAKE 0x02
280 #define MACE_PHYCC_AWAKE 0x01
282 #define MACE_IAC_ADDRCHG 0x80
283 #define MACE_IAC_PHYADDR 0x04
284 #define MACE_IAC_LOGADDR 0x02
286 #define MACE_UTR_RTRE 0x80
287 #define MACE_UTR_RTRD 0x40
288 #define MACE_UTR_RPA 0x20
289 #define MACE_UTR_FCOLL 0x10
290 #define MACE_UTR_RCVFCSE 0x08
291 #define MACE_UTR_LOOP_INCL_MENDEC 0x06
292 #define MACE_UTR_LOOP_NO_MENDEC 0x04
293 #define MACE_UTR_LOOP_EXTERNAL 0x02
294 #define MACE_UTR_LOOP_NONE 0x00
295 #define MACE_UTR_RESERVED 0x01
297 /* Switch MACE register bank (only 0 and 1 are valid) */
298 #define MACEBANK(win_num) outb((win_num), ioaddr + AM2150_MACE_BANK)
300 #define MACE_IMR_DEFAULT \
311 #undef MACE_IMR_DEFAULT
312 #define MACE_IMR_DEFAULT 0x00 /* New statistics handling: grab everything */
314 #define TX_TIMEOUT ((400*HZ)/1000)
316 /* ----------------------------------------------------------------------------
318 ---------------------------------------------------------------------------- */
320 typedef struct _mace_statistics {
335 /* RFS1--Receive Status (RCVSTS) */
341 /* RFS2--Runt Packet Count (RNTPC) */
344 /* RFS3--Receive Collision Count (RCVCC) */
365 typedef struct _mace_private {
368 struct net_device_stats linux_stats; /* Linux statistics counters */
369 mace_statistics mace_stats; /* MACE chip statistics counters */
371 /* restore_multicast_list() state variables */
372 int multicast_ladrf[MACE_LADRF_LEN]; /* Logical address filter */
373 int multicast_num_addrs;
375 char tx_free_frames; /* Number of free transmit frame buffers */
376 char tx_irq_disabled; /* MACE TX interrupt disabled */
378 spinlock_t bank_lock; /* Must be held if you step off bank 0 */
381 /* ----------------------------------------------------------------------------
382 Private Global Variables
383 ---------------------------------------------------------------------------- */
386 static char rcsid[] =
387 "nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao";
388 static char *version =
389 DRV_NAME " " DRV_VERSION " (Roger C. Pao)";
392 static dev_info_t dev_info="nmclan_cs";
393 static dev_link_t *dev_list;
395 static char *if_names[]={
396 "Auto", "10baseT", "BNC",
399 /* ----------------------------------------------------------------------------
401 These are the parameters that can be set during loading with
403 ---------------------------------------------------------------------------- */
405 MODULE_DESCRIPTION("New Media PCMCIA ethernet driver");
406 MODULE_LICENSE("GPL");
408 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
410 /* 0=auto, 1=10baseT, 2 = 10base2, default=auto */
411 INT_MODULE_PARM(if_port, 0);
414 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
415 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
417 #define DEBUG(n, args...)
420 /* ----------------------------------------------------------------------------
422 ---------------------------------------------------------------------------- */
424 static void nmclan_config(dev_link_t *link);
425 static void nmclan_release(dev_link_t *link);
426 static int nmclan_event(event_t event, int priority,
427 event_callback_args_t *args);
429 static void nmclan_reset(struct net_device *dev);
430 static int mace_config(struct net_device *dev, struct ifmap *map);
431 static int mace_open(struct net_device *dev);
432 static int mace_close(struct net_device *dev);
433 static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev);
434 static void mace_tx_timeout(struct net_device *dev);
435 static irqreturn_t mace_interrupt(int irq, void *dev_id, struct pt_regs *regs);
436 static struct net_device_stats *mace_get_stats(struct net_device *dev);
437 static int mace_rx(struct net_device *dev, unsigned char RxCnt);
438 static void restore_multicast_list(struct net_device *dev);
439 static void set_multicast_list(struct net_device *dev);
440 static struct ethtool_ops netdev_ethtool_ops;
443 static dev_link_t *nmclan_attach(void);
444 static void nmclan_detach(dev_link_t *);
446 /* ----------------------------------------------------------------------------
448 Creates an "instance" of the driver, allocating local data
449 structures for one device. The device is registered with Card
451 ---------------------------------------------------------------------------- */
453 static dev_link_t *nmclan_attach(void)
457 struct net_device *dev;
458 client_reg_t client_reg;
461 DEBUG(0, "nmclan_attach()\n");
462 DEBUG(1, "%s\n", rcsid);
464 /* Create new ethernet device */
465 dev = alloc_etherdev(sizeof(mace_private));
468 lp = netdev_priv(dev);
472 spin_lock_init(&lp->bank_lock);
473 link->io.NumPorts1 = 32;
474 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
475 link->io.IOAddrLines = 5;
476 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
477 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
478 link->irq.Handler = &mace_interrupt;
479 link->irq.Instance = dev;
480 link->conf.Attributes = CONF_ENABLE_IRQ;
482 link->conf.IntType = INT_MEMORY_AND_IO;
483 link->conf.ConfigIndex = 1;
484 link->conf.Present = PRESENT_OPTION;
486 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
488 SET_MODULE_OWNER(dev);
489 dev->hard_start_xmit = &mace_start_xmit;
490 dev->set_config = &mace_config;
491 dev->get_stats = &mace_get_stats;
492 dev->set_multicast_list = &set_multicast_list;
493 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
494 dev->open = &mace_open;
495 dev->stop = &mace_close;
496 #ifdef HAVE_TX_TIMEOUT
497 dev->tx_timeout = mace_tx_timeout;
498 dev->watchdog_timeo = TX_TIMEOUT;
501 /* Register with Card Services */
502 link->next = dev_list;
504 client_reg.dev_info = &dev_info;
505 client_reg.Version = 0x0210;
506 client_reg.event_callback_args.client_data = link;
507 ret = pcmcia_register_client(&link->handle, &client_reg);
509 cs_error(link->handle, RegisterClient, ret);
515 } /* nmclan_attach */
517 /* ----------------------------------------------------------------------------
519 This deletes a driver "instance". The device is de-registered
520 with Card Services. If it has been released, all local data
521 structures are freed. Otherwise, the structures will be freed
522 when the device is released.
523 ---------------------------------------------------------------------------- */
525 static void nmclan_detach(dev_link_t *link)
527 struct net_device *dev = link->priv;
530 DEBUG(0, "nmclan_detach(0x%p)\n", link);
532 /* Locate device structure */
533 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
534 if (*linkp == link) break;
539 unregister_netdev(dev);
541 if (link->state & DEV_CONFIG)
542 nmclan_release(link);
545 pcmcia_deregister_client(link->handle);
547 /* Unlink device structure, free bits */
550 } /* nmclan_detach */
552 /* ----------------------------------------------------------------------------
554 Reads a MACE register. This is bank independent; however, the
555 caller must ensure that this call is not interruptable. We are
556 assuming that during normal operation, the MACE is always in
558 ---------------------------------------------------------------------------- */
559 static int mace_read(mace_private *lp, kio_addr_t ioaddr, int reg)
565 case 0: /* register 0-15 */
566 data = inb(ioaddr + AM2150_MACE_BASE + reg);
568 case 1: /* register 16-31 */
569 spin_lock_irqsave(&lp->bank_lock, flags);
571 data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
573 spin_unlock_irqrestore(&lp->bank_lock, flags);
576 return (data & 0xFF);
579 /* ----------------------------------------------------------------------------
581 Writes to a MACE register. This is bank independent; however,
582 the caller must ensure that this call is not interruptable. We
583 are assuming that during normal operation, the MACE is always in
585 ---------------------------------------------------------------------------- */
586 static void mace_write(mace_private *lp, kio_addr_t ioaddr, int reg, int data)
591 case 0: /* register 0-15 */
592 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg);
594 case 1: /* register 16-31 */
595 spin_lock_irqsave(&lp->bank_lock, flags);
597 outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
599 spin_unlock_irqrestore(&lp->bank_lock, flags);
604 /* ----------------------------------------------------------------------------
606 Resets the MACE chip.
607 ---------------------------------------------------------------------------- */
608 static int mace_init(mace_private *lp, kio_addr_t ioaddr, char *enet_addr)
613 /* MACE Software reset */
614 mace_write(lp, ioaddr, MACE_BIUCC, 1);
615 while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) {
616 /* Wait for reset bit to be cleared automatically after <= 200ns */;
619 printk(KERN_ERR "mace: reset failed, card removed ?\n");
624 mace_write(lp, ioaddr, MACE_BIUCC, 0);
626 /* The Am2150 requires that the MACE FIFOs operate in burst mode. */
627 mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F);
629 mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */
630 mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */
633 * Bit 2-1 PORTSEL[1-0] Port Select.
636 * 10 DAI Port (reserved in Am2150)
638 * For this card, only the first two are valid.
639 * So, PLSCC should be set to
642 * Or just set ASEL in PHYCC below!
646 mace_write(lp, ioaddr, MACE_PLSCC, 0x02);
649 mace_write(lp, ioaddr, MACE_PLSCC, 0x00);
652 mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4);
653 /* ASEL Auto Select. When set, the PORTSEL[1-0] bits are overridden,
654 and the MACE device will automatically select the operating media
659 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR);
660 /* Poll ADDRCHG bit */
662 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
666 printk(KERN_ERR "mace: ADDRCHG timeout, card removed ?\n");
670 /* Set PADR register */
671 for (i = 0; i < ETHER_ADDR_LEN; i++)
672 mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]);
674 /* MAC Configuration Control Register should be written last */
675 /* Let set_multicast_list set this. */
676 /* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */
677 mace_write(lp, ioaddr, MACE_MACCC, 0x00);
681 /* ----------------------------------------------------------------------------
683 This routine is scheduled to run after a CARD_INSERTION event
684 is received, to configure the PCMCIA socket, and to make the
685 ethernet device available to the system.
686 ---------------------------------------------------------------------------- */
688 #define CS_CHECK(fn, ret) \
689 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
691 static void nmclan_config(dev_link_t *link)
693 client_handle_t handle = link->handle;
694 struct net_device *dev = link->priv;
695 mace_private *lp = netdev_priv(dev);
699 int i, last_ret, last_fn;
702 DEBUG(0, "nmclan_config(0x%p)\n", link);
704 tuple.Attributes = 0;
705 tuple.TupleData = buf;
706 tuple.TupleDataMax = 64;
707 tuple.TupleOffset = 0;
708 tuple.DesiredTuple = CISTPL_CONFIG;
709 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
710 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
711 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
712 link->conf.ConfigBase = parse.config.base;
715 link->state |= DEV_CONFIG;
717 CS_CHECK(RequestIO, pcmcia_request_io(handle, &link->io));
718 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
719 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
720 dev->irq = link->irq.AssignedIRQ;
721 dev->base_addr = link->io.BasePort1;
723 ioaddr = dev->base_addr;
725 /* Read the ethernet address from the CIS. */
726 tuple.DesiredTuple = 0x80 /* CISTPL_CFTABLE_ENTRY_MISC */;
727 tuple.TupleData = buf;
728 tuple.TupleDataMax = 64;
729 tuple.TupleOffset = 0;
730 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
731 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
732 memcpy(dev->dev_addr, tuple.TupleData, ETHER_ADDR_LEN);
734 /* Verify configuration by reading the MACE ID. */
738 sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL);
739 sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH);
740 if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) {
741 DEBUG(0, "nmclan_cs configured: mace id=%x %x\n",
744 printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should"
745 " be 0x40 0x?9\n", sig[0], sig[1]);
746 link->state &= ~DEV_CONFIG_PENDING;
751 if(mace_init(lp, ioaddr, dev->dev_addr) == -1)
754 /* The if_port symbol can be set when the module is loaded */
756 dev->if_port = if_port;
758 printk(KERN_NOTICE "nmclan_cs: invalid if_port requested\n");
760 link->dev = &lp->node;
761 link->state &= ~DEV_CONFIG_PENDING;
762 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
764 i = register_netdev(dev);
766 printk(KERN_NOTICE "nmclan_cs: register_netdev() failed\n");
771 strcpy(lp->node.dev_name, dev->name);
773 printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port, hw_addr ",
774 dev->name, dev->base_addr, dev->irq, if_names[dev->if_port]);
775 for (i = 0; i < 6; i++)
776 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
780 cs_error(link->handle, last_fn, last_ret);
782 nmclan_release(link);
785 } /* nmclan_config */
787 /* ----------------------------------------------------------------------------
789 After a card is removed, nmclan_release() will unregister the
790 net device, and release the PCMCIA configuration. If the device
791 is still open, this will be postponed until it is closed.
792 ---------------------------------------------------------------------------- */
793 static void nmclan_release(dev_link_t *link)
796 DEBUG(0, "nmclan_release(0x%p)\n", link);
798 pcmcia_release_configuration(link->handle);
799 pcmcia_release_io(link->handle, &link->io);
800 pcmcia_release_irq(link->handle, &link->irq);
802 link->state &= ~DEV_CONFIG;
805 /* ----------------------------------------------------------------------------
807 The card status event handler. Mostly, this schedules other
808 stuff to run after an event is received. A CARD_REMOVAL event
809 also sets some flags to discourage the net drivers from trying
810 to talk to the card any more.
811 ---------------------------------------------------------------------------- */
812 static int nmclan_event(event_t event, int priority,
813 event_callback_args_t *args)
815 dev_link_t *link = args->client_data;
816 struct net_device *dev = link->priv;
818 DEBUG(1, "nmclan_event(0x%06x)\n", event);
821 case CS_EVENT_CARD_REMOVAL:
822 link->state &= ~DEV_PRESENT;
823 if (link->state & DEV_CONFIG)
824 netif_device_detach(dev);
826 case CS_EVENT_CARD_INSERTION:
827 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
830 case CS_EVENT_PM_SUSPEND:
831 link->state |= DEV_SUSPEND;
832 /* Fall through... */
833 case CS_EVENT_RESET_PHYSICAL:
834 if (link->state & DEV_CONFIG) {
836 netif_device_detach(dev);
837 pcmcia_release_configuration(link->handle);
840 case CS_EVENT_PM_RESUME:
841 link->state &= ~DEV_SUSPEND;
842 /* Fall through... */
843 case CS_EVENT_CARD_RESET:
844 if (link->state & DEV_CONFIG) {
845 pcmcia_request_configuration(link->handle, &link->conf);
848 netif_device_attach(dev);
852 case CS_EVENT_RESET_REQUEST:
859 /* ----------------------------------------------------------------------------
861 Reset and restore all of the Xilinx and MACE registers.
862 ---------------------------------------------------------------------------- */
863 static void nmclan_reset(struct net_device *dev)
865 mace_private *lp = netdev_priv(dev);
868 dev_link_t *link = &lp->link;
872 /* Save original COR value */
874 reg.Action = CS_READ;
875 reg.Offset = CISREG_COR;
877 pcmcia_access_configuration_register(link->handle, ®);
878 OrigCorValue = reg.Value;
881 reg.Action = CS_WRITE;
882 reg.Offset = CISREG_COR;
883 DEBUG(1, "nmclan_reset: OrigCorValue=0x%lX, resetting...\n",
885 reg.Value = COR_SOFT_RESET;
886 pcmcia_access_configuration_register(link->handle, ®);
887 /* Need to wait for 20 ms for PCMCIA to finish reset. */
889 /* Restore original COR configuration index */
890 reg.Value = COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK);
891 pcmcia_access_configuration_register(link->handle, ®);
892 /* Xilinx is now completely reset along with the MACE chip. */
893 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
895 #endif /* #if RESET_XILINX */
897 /* Xilinx is now completely reset along with the MACE chip. */
898 lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
900 /* Reinitialize the MACE chip for operation. */
901 mace_init(lp, dev->base_addr, dev->dev_addr);
902 mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT);
904 /* Restore the multicast list and enable TX and RX. */
905 restore_multicast_list(dev);
908 /* ----------------------------------------------------------------------------
910 [Someone tell me what this is supposed to do? Is if_port a defined
911 standard? If so, there should be defines to indicate 1=10Base-T,
912 2=10Base-2, etc. including limited automatic detection.]
913 ---------------------------------------------------------------------------- */
914 static int mace_config(struct net_device *dev, struct ifmap *map)
916 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
917 if (map->port <= 2) {
918 dev->if_port = map->port;
919 printk(KERN_INFO "%s: switched to %s port\n", dev->name,
920 if_names[dev->if_port]);
927 /* ----------------------------------------------------------------------------
930 ---------------------------------------------------------------------------- */
931 static int mace_open(struct net_device *dev)
933 kio_addr_t ioaddr = dev->base_addr;
934 mace_private *lp = netdev_priv(dev);
935 dev_link_t *link = &lp->link;
944 netif_start_queue(dev);
947 return 0; /* Always succeed */
950 /* ----------------------------------------------------------------------------
952 Closes device driver.
953 ---------------------------------------------------------------------------- */
954 static int mace_close(struct net_device *dev)
956 kio_addr_t ioaddr = dev->base_addr;
957 mace_private *lp = netdev_priv(dev);
958 dev_link_t *link = &lp->link;
960 DEBUG(2, "%s: shutting down ethercard.\n", dev->name);
962 /* Mask off all interrupts from the MACE chip. */
963 outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR);
966 netif_stop_queue(dev);
971 static void netdev_get_drvinfo(struct net_device *dev,
972 struct ethtool_drvinfo *info)
974 strcpy(info->driver, DRV_NAME);
975 strcpy(info->version, DRV_VERSION);
976 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
980 static u32 netdev_get_msglevel(struct net_device *dev)
985 static void netdev_set_msglevel(struct net_device *dev, u32 level)
989 #endif /* PCMCIA_DEBUG */
991 static struct ethtool_ops netdev_ethtool_ops = {
992 .get_drvinfo = netdev_get_drvinfo,
994 .get_msglevel = netdev_get_msglevel,
995 .set_msglevel = netdev_set_msglevel,
996 #endif /* PCMCIA_DEBUG */
999 /* ----------------------------------------------------------------------------
1001 This routine begins the packet transmit function. When completed,
1002 it will generate a transmit interrupt.
1004 According to /usr/src/linux/net/inet/dev.c, if _start_xmit
1005 returns 0, the "packet is now solely the responsibility of the
1006 driver." If _start_xmit returns non-zero, the "transmission
1007 failed, put skb back into a list."
1008 ---------------------------------------------------------------------------- */
1010 static void mace_tx_timeout(struct net_device *dev)
1012 mace_private *lp = netdev_priv(dev);
1013 dev_link_t *link = &lp->link;
1015 printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name);
1016 #if RESET_ON_TIMEOUT
1017 printk("resetting card\n");
1018 pcmcia_reset_card(link->handle, NULL);
1019 #else /* #if RESET_ON_TIMEOUT */
1020 printk("NOT resetting card\n");
1021 #endif /* #if RESET_ON_TIMEOUT */
1022 dev->trans_start = jiffies;
1023 netif_wake_queue(dev);
1026 static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev)
1028 mace_private *lp = netdev_priv(dev);
1029 kio_addr_t ioaddr = dev->base_addr;
1031 netif_stop_queue(dev);
1033 DEBUG(3, "%s: mace_start_xmit(length = %ld) called.\n",
1034 dev->name, (long)skb->len);
1036 #if (!TX_INTERRUPTABLE)
1037 /* Disable MACE TX interrupts. */
1038 outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT,
1039 ioaddr + AM2150_MACE_BASE + MACE_IMR);
1040 lp->tx_irq_disabled=1;
1041 #endif /* #if (!TX_INTERRUPTABLE) */
1044 /* This block must not be interrupted by another transmit request!
1045 mace_tx_timeout will take care of timer-based retransmissions from
1046 the upper layers. The interrupt handler is guaranteed never to
1047 service a transmit interrupt while we are in here.
1050 lp->linux_stats.tx_bytes += skb->len;
1051 lp->tx_free_frames--;
1053 /* WARNING: Write the _exact_ number of bytes written in the header! */
1054 /* Put out the word header [must be an outw()] . . . */
1055 outw(skb->len, ioaddr + AM2150_XMT);
1056 /* . . . and the packet [may be any combination of outw() and outb()] */
1057 outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1);
1059 /* Odd byte transfer */
1060 outb(skb->data[skb->len-1], ioaddr + AM2150_XMT);
1063 dev->trans_start = jiffies;
1066 if (lp->tx_free_frames > 0)
1067 netif_start_queue(dev);
1068 #endif /* #if MULTI_TX */
1071 #if (!TX_INTERRUPTABLE)
1072 /* Re-enable MACE TX interrupts. */
1073 lp->tx_irq_disabled=0;
1074 outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR);
1075 #endif /* #if (!TX_INTERRUPTABLE) */
1080 } /* mace_start_xmit */
1082 /* ----------------------------------------------------------------------------
1084 The interrupt handler.
1085 ---------------------------------------------------------------------------- */
1086 static irqreturn_t mace_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1088 struct net_device *dev = (struct net_device *) dev_id;
1089 mace_private *lp = netdev_priv(dev);
1090 kio_addr_t ioaddr = dev->base_addr;
1092 int IntrCnt = MACE_MAX_IR_ITERATIONS;
1095 DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.\n",
1100 if (lp->tx_irq_disabled) {
1102 (lp->tx_irq_disabled?
1103 KERN_NOTICE "%s: Interrupt with tx_irq_disabled "
1104 "[isr=%02X, imr=%02X]\n":
1105 KERN_NOTICE "%s: Re-entering the interrupt handler "
1106 "[isr=%02X, imr=%02X]\n"),
1108 inb(ioaddr + AM2150_MACE_BASE + MACE_IR),
1109 inb(ioaddr + AM2150_MACE_BASE + MACE_IMR)
1111 /* WARNING: MACE_IR has been read! */
1115 if (!netif_device_present(dev)) {
1116 DEBUG(2, "%s: interrupt from dead card\n", dev->name);
1121 /* WARNING: MACE_IR is a READ/CLEAR port! */
1122 status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR);
1124 DEBUG(3, "mace_interrupt: irq 0x%X status 0x%X.\n", irq, status);
1126 if (status & MACE_IR_RCVINT) {
1127 mace_rx(dev, MACE_MAX_RX_ITERATIONS);
1130 if (status & MACE_IR_XMTINT) {
1131 unsigned char fifofc;
1132 unsigned char xmtrc;
1133 unsigned char xmtfs;
1135 fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC);
1136 if ((fifofc & MACE_FIFOFC_XMTFC)==0) {
1137 lp->linux_stats.tx_errors++;
1138 outb(0xFF, ioaddr + AM2150_XMT_SKIP);
1141 /* Transmit Retry Count (XMTRC, reg 4) */
1142 xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC);
1143 if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++;
1144 lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC);
1147 (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) &
1148 MACE_XMTFS_XMTSV /* Transmit Status Valid */
1150 lp->mace_stats.xmtsv++;
1152 if (xmtfs & ~MACE_XMTFS_XMTSV) {
1153 if (xmtfs & MACE_XMTFS_UFLO) {
1154 /* Underflow. Indicates that the Transmit FIFO emptied before
1155 the end of frame was reached. */
1156 lp->mace_stats.uflo++;
1158 if (xmtfs & MACE_XMTFS_LCOL) {
1159 /* Late Collision */
1160 lp->mace_stats.lcol++;
1162 if (xmtfs & MACE_XMTFS_MORE) {
1163 /* MORE than one retry was needed */
1164 lp->mace_stats.more++;
1166 if (xmtfs & MACE_XMTFS_ONE) {
1167 /* Exactly ONE retry occurred */
1168 lp->mace_stats.one++;
1170 if (xmtfs & MACE_XMTFS_DEFER) {
1171 /* Transmission was defered */
1172 lp->mace_stats.defer++;
1174 if (xmtfs & MACE_XMTFS_LCAR) {
1175 /* Loss of carrier */
1176 lp->mace_stats.lcar++;
1178 if (xmtfs & MACE_XMTFS_RTRY) {
1179 /* Retry error: transmit aborted after 16 attempts */
1180 lp->mace_stats.rtry++;
1182 } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */
1184 } /* if (xmtfs & MACE_XMTFS_XMTSV) */
1186 lp->linux_stats.tx_packets++;
1187 lp->tx_free_frames++;
1188 netif_wake_queue(dev);
1189 } /* if (status & MACE_IR_XMTINT) */
1191 if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) {
1192 if (status & MACE_IR_JAB) {
1193 /* Jabber Error. Excessive transmit duration (20-150ms). */
1194 lp->mace_stats.jab++;
1196 if (status & MACE_IR_BABL) {
1197 /* Babble Error. >1518 bytes transmitted. */
1198 lp->mace_stats.babl++;
1200 if (status & MACE_IR_CERR) {
1201 /* Collision Error. CERR indicates the absence of the
1202 Signal Quality Error Test message after a packet
1204 lp->mace_stats.cerr++;
1206 if (status & MACE_IR_RCVCCO) {
1207 /* Receive Collision Count Overflow; */
1208 lp->mace_stats.rcvcco++;
1210 if (status & MACE_IR_RNTPCO) {
1211 /* Runt Packet Count Overflow */
1212 lp->mace_stats.rntpco++;
1214 if (status & MACE_IR_MPCO) {
1215 /* Missed Packet Count Overflow */
1216 lp->mace_stats.mpco++;
1218 } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */
1220 } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt));
1223 } /* mace_interrupt */
1225 /* ----------------------------------------------------------------------------
1228 ---------------------------------------------------------------------------- */
1229 static int mace_rx(struct net_device *dev, unsigned char RxCnt)
1231 mace_private *lp = netdev_priv(dev);
1232 kio_addr_t ioaddr = dev->base_addr;
1233 unsigned char rx_framecnt;
1234 unsigned short rx_status;
1237 ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) &&
1238 (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */
1241 rx_status = inw(ioaddr + AM2150_RCV);
1243 DEBUG(3, "%s: in mace_rx(), framecnt 0x%X, rx_status"
1244 " 0x%X.\n", dev->name, rx_framecnt, rx_status);
1246 if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */
1247 lp->linux_stats.rx_errors++;
1248 if (rx_status & MACE_RCVFS_OFLO) {
1249 lp->mace_stats.oflo++;
1251 if (rx_status & MACE_RCVFS_CLSN) {
1252 lp->mace_stats.clsn++;
1254 if (rx_status & MACE_RCVFS_FRAM) {
1255 lp->mace_stats.fram++;
1257 if (rx_status & MACE_RCVFS_FCS) {
1258 lp->mace_stats.fcs++;
1261 short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4;
1262 /* Auto Strip is off, always subtract 4 */
1263 struct sk_buff *skb;
1265 lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV);
1266 /* runt packet count */
1267 lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV);
1268 /* rcv collision count */
1270 DEBUG(3, " receiving packet size 0x%X rx_status"
1271 " 0x%X.\n", pkt_len, rx_status);
1273 skb = dev_alloc_skb(pkt_len+2);
1278 skb_reserve(skb, 2);
1279 insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1);
1281 *(skb->tail-1) = inb(ioaddr + AM2150_RCV);
1282 skb->protocol = eth_type_trans(skb, dev);
1284 netif_rx(skb); /* Send the packet to the upper (protocol) layers. */
1286 dev->last_rx = jiffies;
1287 lp->linux_stats.rx_packets++;
1288 lp->linux_stats.rx_bytes += skb->len;
1289 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1292 DEBUG(1, "%s: couldn't allocate a sk_buff of size"
1293 " %d.\n", dev->name, pkt_len);
1294 lp->linux_stats.rx_dropped++;
1297 outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
1303 /* ----------------------------------------------------------------------------
1305 ---------------------------------------------------------------------------- */
1306 static void pr_linux_stats(struct net_device_stats *pstats)
1308 DEBUG(2, "pr_linux_stats\n");
1309 DEBUG(2, " rx_packets=%-7ld tx_packets=%ld\n",
1310 (long)pstats->rx_packets, (long)pstats->tx_packets);
1311 DEBUG(2, " rx_errors=%-7ld tx_errors=%ld\n",
1312 (long)pstats->rx_errors, (long)pstats->tx_errors);
1313 DEBUG(2, " rx_dropped=%-7ld tx_dropped=%ld\n",
1314 (long)pstats->rx_dropped, (long)pstats->tx_dropped);
1315 DEBUG(2, " multicast=%-7ld collisions=%ld\n",
1316 (long)pstats->multicast, (long)pstats->collisions);
1318 DEBUG(2, " rx_length_errors=%-7ld rx_over_errors=%ld\n",
1319 (long)pstats->rx_length_errors, (long)pstats->rx_over_errors);
1320 DEBUG(2, " rx_crc_errors=%-7ld rx_frame_errors=%ld\n",
1321 (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors);
1322 DEBUG(2, " rx_fifo_errors=%-7ld rx_missed_errors=%ld\n",
1323 (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors);
1325 DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n",
1326 (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors);
1327 DEBUG(2, " tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n",
1328 (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors);
1329 DEBUG(2, " tx_window_errors=%ld\n",
1330 (long)pstats->tx_window_errors);
1331 } /* pr_linux_stats */
1333 /* ----------------------------------------------------------------------------
1335 ---------------------------------------------------------------------------- */
1336 static void pr_mace_stats(mace_statistics *pstats)
1338 DEBUG(2, "pr_mace_stats\n");
1340 DEBUG(2, " xmtsv=%-7d uflo=%d\n",
1341 pstats->xmtsv, pstats->uflo);
1342 DEBUG(2, " lcol=%-7d more=%d\n",
1343 pstats->lcol, pstats->more);
1344 DEBUG(2, " one=%-7d defer=%d\n",
1345 pstats->one, pstats->defer);
1346 DEBUG(2, " lcar=%-7d rtry=%d\n",
1347 pstats->lcar, pstats->rtry);
1350 DEBUG(2, " exdef=%-7d xmtrc=%d\n",
1351 pstats->exdef, pstats->xmtrc);
1353 /* RFS1--Receive Status (RCVSTS) */
1354 DEBUG(2, " oflo=%-7d clsn=%d\n",
1355 pstats->oflo, pstats->clsn);
1356 DEBUG(2, " fram=%-7d fcs=%d\n",
1357 pstats->fram, pstats->fcs);
1359 /* RFS2--Runt Packet Count (RNTPC) */
1360 /* RFS3--Receive Collision Count (RCVCC) */
1361 DEBUG(2, " rfs_rntpc=%-7d rfs_rcvcc=%d\n",
1362 pstats->rfs_rntpc, pstats->rfs_rcvcc);
1365 DEBUG(2, " jab=%-7d babl=%d\n",
1366 pstats->jab, pstats->babl);
1367 DEBUG(2, " cerr=%-7d rcvcco=%d\n",
1368 pstats->cerr, pstats->rcvcco);
1369 DEBUG(2, " rntpco=%-7d mpco=%d\n",
1370 pstats->rntpco, pstats->mpco);
1373 DEBUG(2, " mpc=%d\n", pstats->mpc);
1376 DEBUG(2, " rntpc=%d\n", pstats->rntpc);
1379 DEBUG(2, " rcvcc=%d\n", pstats->rcvcc);
1381 } /* pr_mace_stats */
1383 /* ----------------------------------------------------------------------------
1385 Update statistics. We change to register window 1, so this
1386 should be run single-threaded if the device is active. This is
1387 expected to be a rare operation, and it's simpler for the rest
1388 of the driver to assume that window 0 is always valid rather
1389 than use a special window-state variable.
1391 oflo & uflo should _never_ occur since it would mean the Xilinx
1392 was not able to transfer data between the MACE FIFO and the
1393 card's SRAM fast enough. If this happens, something is
1394 seriously wrong with the hardware.
1395 ---------------------------------------------------------------------------- */
1396 static void update_stats(kio_addr_t ioaddr, struct net_device *dev)
1398 mace_private *lp = netdev_priv(dev);
1400 lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC);
1401 lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC);
1402 lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC);
1403 /* At this point, mace_stats is fully updated for this call.
1404 We may now update the linux_stats. */
1406 /* The MACE has no equivalent for linux_stats field which are commented
1409 /* lp->linux_stats.multicast; */
1410 lp->linux_stats.collisions =
1411 lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc;
1412 /* Collision: The MACE may retry sending a packet 15 times
1413 before giving up. The retry count is in XMTRC.
1414 Does each retry constitute a collision?
1415 If so, why doesn't the RCVCC record these collisions? */
1417 /* detailed rx_errors: */
1418 lp->linux_stats.rx_length_errors =
1419 lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc;
1420 /* lp->linux_stats.rx_over_errors */
1421 lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs;
1422 lp->linux_stats.rx_frame_errors = lp->mace_stats.fram;
1423 lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo;
1424 lp->linux_stats.rx_missed_errors =
1425 lp->mace_stats.mpco * 256 + lp->mace_stats.mpc;
1427 /* detailed tx_errors */
1428 lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry;
1429 lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar;
1430 /* LCAR usually results from bad cabling. */
1431 lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo;
1432 lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr;
1433 /* lp->linux_stats.tx_window_errors; */
1436 } /* update_stats */
1438 /* ----------------------------------------------------------------------------
1440 Gathers ethernet statistics from the MACE chip.
1441 ---------------------------------------------------------------------------- */
1442 static struct net_device_stats *mace_get_stats(struct net_device *dev)
1444 mace_private *lp = netdev_priv(dev);
1446 update_stats(dev->base_addr, dev);
1448 DEBUG(1, "%s: updating the statistics.\n", dev->name);
1449 pr_linux_stats(&lp->linux_stats);
1450 pr_mace_stats(&lp->mace_stats);
1452 return &lp->linux_stats;
1453 } /* net_device_stats */
1455 /* ----------------------------------------------------------------------------
1457 Modified from Am79C90 data sheet.
1458 ---------------------------------------------------------------------------- */
1460 #ifdef BROKEN_MULTICAST
1462 static void updateCRC(int *CRC, int bit)
1469 }; /* CRC polynomial. poly[n] = coefficient of the x**n term of the
1470 CRC generator polynomial. */
1474 /* shift CRC and control bit (CRC[32]) */
1475 for (j = 32; j > 0; j--)
1479 /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */
1481 for (j = 0; j < 32; j++)
1485 /* ----------------------------------------------------------------------------
1487 Build logical address filter.
1488 Modified from Am79C90 data sheet.
1491 ladrf: logical address filter (contents initialized to 0)
1492 adr: ethernet address
1493 ---------------------------------------------------------------------------- */
1494 static void BuildLAF(int *ladrf, int *adr)
1496 int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */
1498 int i, byte; /* temporary array indices */
1499 int hashcode; /* the output object */
1503 for (byte = 0; byte < 6; byte++)
1504 for (i = 0; i < 8; i++)
1505 updateCRC(CRC, (adr[byte] >> i) & 1);
1508 for (i = 0; i < 6; i++)
1509 hashcode = (hashcode << 1) + CRC[i];
1511 byte = hashcode >> 3;
1512 ladrf[byte] |= (1 << (hashcode & 7));
1516 printk(KERN_DEBUG " adr =");
1517 for (i = 0; i < 6; i++)
1518 printk(" %02X", adr[i]);
1519 printk("\n" KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63]"
1521 for (i = 0; i < 8; i++)
1522 printk(" %02X", ladrf[i]);
1528 /* ----------------------------------------------------------------------------
1529 restore_multicast_list
1530 Restores the multicast filter for MACE chip to the last
1531 set_multicast_list() call.
1536 ---------------------------------------------------------------------------- */
1537 static void restore_multicast_list(struct net_device *dev)
1539 mace_private *lp = netdev_priv(dev);
1540 int num_addrs = lp->multicast_num_addrs;
1541 int *ladrf = lp->multicast_ladrf;
1542 kio_addr_t ioaddr = dev->base_addr;
1545 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n",
1546 dev->name, num_addrs);
1548 if (num_addrs > 0) {
1550 DEBUG(1, "Attempt to restore multicast list detected.\n");
1552 mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR);
1553 /* Poll ADDRCHG bit */
1554 while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
1556 /* Set LADRF register */
1557 for (i = 0; i < MACE_LADRF_LEN; i++)
1558 mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]);
1560 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL);
1561 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1563 } else if (num_addrs < 0) {
1565 /* Promiscuous mode: receive all packets */
1566 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1567 mace_write(lp, ioaddr, MACE_MACCC,
1568 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1574 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1575 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1578 } /* restore_multicast_list */
1580 /* ----------------------------------------------------------------------------
1582 Set or clear the multicast filter for this adaptor.
1585 num_addrs == -1 Promiscuous mode, receive all packets
1586 num_addrs == 0 Normal mode, clear multicast list
1587 num_addrs > 0 Multicast mode, receive normal and MC packets, and do
1588 best-effort filtering.
1592 ---------------------------------------------------------------------------- */
1594 static void set_multicast_list(struct net_device *dev)
1596 mace_private *lp = netdev_priv(dev);
1597 int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */
1599 struct dev_mc_list *dmi = dev->mc_list;
1604 if (dev->mc_count != old) {
1605 old = dev->mc_count;
1606 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1612 /* Set multicast_num_addrs. */
1613 lp->multicast_num_addrs = dev->mc_count;
1615 /* Set multicast_ladrf. */
1616 if (num_addrs > 0) {
1617 /* Calculate multicast logical address filter */
1618 memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN);
1619 for (i = 0; i < dev->mc_count; i++) {
1620 memcpy(adr, dmi->dmi_addr, ETHER_ADDR_LEN);
1622 BuildLAF(lp->multicast_ladrf, adr);
1626 restore_multicast_list(dev);
1628 } /* set_multicast_list */
1630 #endif /* BROKEN_MULTICAST */
1632 static void restore_multicast_list(struct net_device *dev)
1634 kio_addr_t ioaddr = dev->base_addr;
1635 mace_private *lp = netdev_priv(dev);
1637 DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", dev->name,
1638 lp->multicast_num_addrs);
1640 if (dev->flags & IFF_PROMISC) {
1641 /* Promiscuous mode: receive all packets */
1642 mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1643 mace_write(lp, ioaddr, MACE_MACCC,
1644 MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
1648 mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
1649 mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
1651 } /* restore_multicast_list */
1653 static void set_multicast_list(struct net_device *dev)
1655 mace_private *lp = netdev_priv(dev);
1660 if (dev->mc_count != old) {
1661 old = dev->mc_count;
1662 DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
1668 lp->multicast_num_addrs = dev->mc_count;
1669 restore_multicast_list(dev);
1671 } /* set_multicast_list */
1673 static struct pcmcia_device_id nmclan_ids[] = {
1674 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941),
1675 PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet", 0x0ebf1d60, 0x00b2e941),
1678 MODULE_DEVICE_TABLE(pcmcia, nmclan_ids);
1680 static struct pcmcia_driver nmclan_cs_driver = {
1681 .owner = THIS_MODULE,
1683 .name = "nmclan_cs",
1685 .attach = nmclan_attach,
1686 .event = nmclan_event,
1687 .detach = nmclan_detach,
1688 .id_table = nmclan_ids,
1691 static int __init init_nmclan_cs(void)
1693 return pcmcia_register_driver(&nmclan_cs_driver);
1696 static void __exit exit_nmclan_cs(void)
1698 pcmcia_unregister_driver(&nmclan_cs_driver);
1699 BUG_ON(dev_list != NULL);
1702 module_init(init_nmclan_cs);
1703 module_exit(exit_nmclan_cs);