Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1699 insertions, 0 deletions

diff --git a/drivers/net/pcmcia/nmclan_cs.c b/drivers/net/pcmcia/nmclan_cs.c
new file mode 100644
index 000000000000..4603807fcafb
--- /dev/null
+++ b/drivers/net/pcmcia/nmclan_cs.c
@@ -0,0 +1,1699 @@
+/* ----------------------------------------------------------------------------
+Linux PCMCIA ethernet adapter driver for the New Media Ethernet LAN.
+  nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao
+
+  The Ethernet LAN uses the Advanced Micro Devices (AMD) Am79C940 Media
+  Access Controller for Ethernet (MACE).  It is essentially the Am2150
+  PCMCIA Ethernet card contained in the Am2150 Demo Kit.
+
+Written by Roger C. Pao <rpao@paonet.org>
+  Copyright 1995 Roger C. Pao
+  Linux 2.5 cleanups Copyright Red Hat 2003
+
+  This software may be used and distributed according to the terms of
+  the GNU General Public License.
+
+Ported to Linux 1.3.* network driver environment by
+  Matti Aarnio <mea@utu.fi>
+
+References
+
+  Am2150 Technical Reference Manual, Revision 1.0, August 17, 1993
+  Am79C940 (MACE) Data Sheet, 1994
+  Am79C90 (C-LANCE) Data Sheet, 1994
+  Linux PCMCIA Programmer's Guide v1.17
+  /usr/src/linux/net/inet/dev.c, Linux kernel 1.2.8
+
+  Eric Mears, New Media Corporation
+  Tom Pollard, New Media Corporation
+  Dean Siasoyco, New Media Corporation
+  Ken Lesniak, Silicon Graphics, Inc. <lesniak@boston.sgi.com>
+  Donald Becker <becker@scyld.com>
+  David Hinds <dahinds@users.sourceforge.net>
+
+  The Linux client driver is based on the 3c589_cs.c client driver by
+  David Hinds.
+
+  The Linux network driver outline is based on the 3c589_cs.c driver,
+  the 8390.c driver, and the example skeleton.c kernel code, which are
+  by Donald Becker.
+
+  The Am2150 network driver hardware interface code is based on the
+  OS/9000 driver for the New Media Ethernet LAN by Eric Mears.
+
+  Special thanks for testing and help in debugging this driver goes
+  to Ken Lesniak.
+
+-------------------------------------------------------------------------------
+Driver Notes and Issues
+-------------------------------------------------------------------------------
+
+1. Developed on a Dell 320SLi
+   PCMCIA Card Services 2.6.2
+   Linux dell 1.2.10 #1 Thu Jun 29 20:23:41 PDT 1995 i386
+
+2. rc.pcmcia may require loading pcmcia_core with io_speed=300:
+   'insmod pcmcia_core.o io_speed=300'.
+   This will avoid problems with fast systems which causes rx_framecnt
+   to return random values.
+
+3. If hot extraction does not work for you, use 'ifconfig eth0 down'
+   before extraction.
+
+4. There is a bad slow-down problem in this driver.
+
+5. Future: Multicast processing.  In the meantime, do _not_ compile your
+   kernel with multicast ip enabled.
+
+-------------------------------------------------------------------------------
+History
+-------------------------------------------------------------------------------
+Log: nmclan_cs.c,v
+ * 2.5.75-ac1 2003/07/11 Alan Cox <alan@redhat.com>
+ * Fixed hang on card eject as we probe it
+ * Cleaned up to use new style locking.
+ *
+ * Revision 0.16  1995/07/01  06:42:17  rpao
+ * Bug fix: nmclan_reset() called CardServices incorrectly.
+ *
+ * Revision 0.15  1995/05/24  08:09:47  rpao
+ * Re-implement MULTI_TX dev->tbusy handling.
+ *
+ * Revision 0.14  1995/05/23  03:19:30  rpao
+ * Added, in nmclan_config(), "tuple.Attributes = 0;".
+ * Modified MACE ID check to ignore chip revision level.
+ * Avoid tx_free_frames race condition between _start_xmit and _interrupt.
+ *
+ * Revision 0.13  1995/05/18  05:56:34  rpao
+ * Statistics changes.
+ * Bug fix: nmclan_reset did not enable TX and RX: call restore_multicast_list.
+ * Bug fix: mace_interrupt checks ~MACE_IMR_DEFAULT.  Fixes driver lockup.
+ *
+ * Revision 0.12  1995/05/14  00:12:23  rpao
+ * Statistics overhaul.
+ *
+
+95/05/13 rpao	V0.10a
+		Bug fix: MACE statistics counters used wrong I/O ports.
+		Bug fix: mace_interrupt() needed to allow statistics to be
+		processed without RX or TX interrupts pending.
+95/05/11 rpao	V0.10
+		Multiple transmit request processing.
+		Modified statistics to use MACE counters where possible.
+95/05/10 rpao	V0.09 Bug fix: Must use IO_DATA_PATH_WIDTH_AUTO.
+		*Released
+95/05/10 rpao	V0.08
+		Bug fix: Make all non-exported functions private by using
+		static keyword.
+		Bug fix: Test IntrCnt _before_ reading MACE_IR.
+95/05/10 rpao	V0.07 Statistics.
+95/05/09 rpao	V0.06 Fix rx_framecnt problem by addition of PCIC wait states.
+
+---------------------------------------------------------------------------- */
+
+#define DRV_NAME	"nmclan_cs"
+#define DRV_VERSION	"0.16"
+
+
+/* ----------------------------------------------------------------------------
+Conditional Compilation Options
+---------------------------------------------------------------------------- */
+
+#define MULTI_TX			0
+#define RESET_ON_TIMEOUT		1
+#define TX_INTERRUPTABLE		1
+#define RESET_XILINX			0
+
+/* ----------------------------------------------------------------------------
+Include Files
+---------------------------------------------------------------------------- */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/in.h>
+#include <linux/delay.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/ioport.h>
+#include <linux/bitops.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+/* ----------------------------------------------------------------------------
+Defines
+---------------------------------------------------------------------------- */
+
+#define ETHER_ADDR_LEN			ETH_ALEN
+					/* 6 bytes in an Ethernet Address */
+#define MACE_LADRF_LEN			8
+					/* 8 bytes in Logical Address Filter */
+
+/* Loop Control Defines */
+#define MACE_MAX_IR_ITERATIONS		10
+#define MACE_MAX_RX_ITERATIONS		12
+	/*
+	TBD: Dean brought this up, and I assumed the hardware would
+	handle it:
+
+	If MACE_MAX_RX_ITERATIONS is > 1, rx_framecnt may still be
+	non-zero when the isr exits.  We may not get another interrupt
+	to process the remaining packets for some time.
+	*/
+
+/*
+The Am2150 has a Xilinx XC3042 field programmable gate array (FPGA)
+which manages the interface between the MACE and the PCMCIA bus.  It
+also includes buffer management for the 32K x 8 SRAM to control up to
+four transmit and 12 receive frames at a time.
+*/
+#define AM2150_MAX_TX_FRAMES		4
+#define AM2150_MAX_RX_FRAMES		12
+
+/* Am2150 Ethernet Card I/O Mapping */
+#define AM2150_RCV			0x00
+#define AM2150_XMT			0x04
+#define AM2150_XMT_SKIP			0x09
+#define AM2150_RCV_NEXT			0x0A
+#define AM2150_RCV_FRAME_COUNT		0x0B
+#define AM2150_MACE_BANK		0x0C
+#define AM2150_MACE_BASE		0x10
+
+/* MACE Registers */
+#define MACE_RCVFIFO			0
+#define MACE_XMTFIFO			1
+#define MACE_XMTFC			2
+#define MACE_XMTFS			3
+#define MACE_XMTRC			4
+#define MACE_RCVFC			5
+#define MACE_RCVFS			6
+#define MACE_FIFOFC			7
+#define MACE_IR				8
+#define MACE_IMR			9
+#define MACE_PR				10
+#define MACE_BIUCC			11
+#define MACE_FIFOCC			12
+#define MACE_MACCC			13
+#define MACE_PLSCC			14
+#define MACE_PHYCC			15
+#define MACE_CHIPIDL			16
+#define MACE_CHIPIDH			17
+#define MACE_IAC			18
+/* Reserved */
+#define MACE_LADRF			20
+#define MACE_PADR			21
+/* Reserved */
+/* Reserved */
+#define MACE_MPC			24
+/* Reserved */
+#define MACE_RNTPC			26
+#define MACE_RCVCC			27
+/* Reserved */
+#define MACE_UTR			29
+#define MACE_RTR1			30
+#define MACE_RTR2			31
+
+/* MACE Bit Masks */
+#define MACE_XMTRC_EXDEF		0x80
+#define MACE_XMTRC_XMTRC		0x0F
+
+#define MACE_XMTFS_XMTSV		0x80
+#define MACE_XMTFS_UFLO			0x40
+#define MACE_XMTFS_LCOL			0x20
+#define MACE_XMTFS_MORE			0x10
+#define MACE_XMTFS_ONE			0x08
+#define MACE_XMTFS_DEFER		0x04
+#define MACE_XMTFS_LCAR			0x02
+#define MACE_XMTFS_RTRY			0x01
+
+#define MACE_RCVFS_RCVSTS		0xF000
+#define MACE_RCVFS_OFLO			0x8000
+#define MACE_RCVFS_CLSN			0x4000
+#define MACE_RCVFS_FRAM			0x2000
+#define MACE_RCVFS_FCS			0x1000
+
+#define MACE_FIFOFC_RCVFC		0xF0
+#define MACE_FIFOFC_XMTFC		0x0F
+
+#define MACE_IR_JAB			0x80
+#define MACE_IR_BABL			0x40
+#define MACE_IR_CERR			0x20
+#define MACE_IR_RCVCCO			0x10
+#define MACE_IR_RNTPCO			0x08
+#define MACE_IR_MPCO			0x04
+#define MACE_IR_RCVINT			0x02
+#define MACE_IR_XMTINT			0x01
+
+#define MACE_MACCC_PROM			0x80
+#define MACE_MACCC_DXMT2PD		0x40
+#define MACE_MACCC_EMBA			0x20
+#define MACE_MACCC_RESERVED		0x10
+#define MACE_MACCC_DRCVPA		0x08
+#define MACE_MACCC_DRCVBC		0x04
+#define MACE_MACCC_ENXMT		0x02
+#define MACE_MACCC_ENRCV		0x01
+
+#define MACE_PHYCC_LNKFL		0x80
+#define MACE_PHYCC_DLNKTST		0x40
+#define MACE_PHYCC_REVPOL		0x20
+#define MACE_PHYCC_DAPC			0x10
+#define MACE_PHYCC_LRT			0x08
+#define MACE_PHYCC_ASEL			0x04
+#define MACE_PHYCC_RWAKE		0x02
+#define MACE_PHYCC_AWAKE		0x01
+
+#define MACE_IAC_ADDRCHG		0x80
+#define MACE_IAC_PHYADDR		0x04
+#define MACE_IAC_LOGADDR		0x02
+
+#define MACE_UTR_RTRE			0x80
+#define MACE_UTR_RTRD			0x40
+#define MACE_UTR_RPA			0x20
+#define MACE_UTR_FCOLL			0x10
+#define MACE_UTR_RCVFCSE		0x08
+#define MACE_UTR_LOOP_INCL_MENDEC	0x06
+#define MACE_UTR_LOOP_NO_MENDEC		0x04
+#define MACE_UTR_LOOP_EXTERNAL		0x02
+#define MACE_UTR_LOOP_NONE		0x00
+#define MACE_UTR_RESERVED		0x01
+
+/* Switch MACE register bank (only 0 and 1 are valid) */
+#define MACEBANK(win_num) outb((win_num), ioaddr + AM2150_MACE_BANK)
+
+#define MACE_IMR_DEFAULT \
+  (0xFF - \
+    ( \
+      MACE_IR_CERR | \
+      MACE_IR_RCVCCO | \
+      MACE_IR_RNTPCO | \
+      MACE_IR_MPCO | \
+      MACE_IR_RCVINT | \
+      MACE_IR_XMTINT \
+    ) \
+  )
+#undef MACE_IMR_DEFAULT
+#define MACE_IMR_DEFAULT 0x00 /* New statistics handling: grab everything */
+
+#define TX_TIMEOUT		((400*HZ)/1000)
+
+/* ----------------------------------------------------------------------------
+Type Definitions
+---------------------------------------------------------------------------- */
+
+typedef struct _mace_statistics {
+    /* MACE_XMTFS */
+    int xmtsv;
+    int uflo;
+    int lcol;
+    int more;
+    int one;
+    int defer;
+    int lcar;
+    int rtry;
+
+    /* MACE_XMTRC */
+    int exdef;
+    int xmtrc;
+
+    /* RFS1--Receive Status (RCVSTS) */
+    int oflo;
+    int clsn;
+    int fram;
+    int fcs;
+
+    /* RFS2--Runt Packet Count (RNTPC) */
+    int rfs_rntpc;
+
+    /* RFS3--Receive Collision Count (RCVCC) */
+    int rfs_rcvcc;
+
+    /* MACE_IR */
+    int jab;
+    int babl;
+    int cerr;
+    int rcvcco;
+    int rntpco;
+    int mpco;
+
+    /* MACE_MPC */
+    int mpc;
+
+    /* MACE_RNTPC */
+    int rntpc;
+
+    /* MACE_RCVCC */
+    int rcvcc;
+} mace_statistics;
+
+typedef struct _mace_private {
+    dev_link_t link;
+    dev_node_t node;
+    struct net_device_stats linux_stats; /* Linux statistics counters */
+    mace_statistics mace_stats; /* MACE chip statistics counters */
+
+    /* restore_multicast_list() state variables */
+    int multicast_ladrf[MACE_LADRF_LEN]; /* Logical address filter */
+    int multicast_num_addrs;
+
+    char tx_free_frames; /* Number of free transmit frame buffers */
+    char tx_irq_disabled; /* MACE TX interrupt disabled */
+    
+    spinlock_t bank_lock; /* Must be held if you step off bank 0 */
+} mace_private;
+
+/* ----------------------------------------------------------------------------
+Private Global Variables
+---------------------------------------------------------------------------- */
+
+#ifdef PCMCIA_DEBUG
+static char rcsid[] =
+"nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao";
+static char *version =
+DRV_NAME " " DRV_VERSION " (Roger C. Pao)";
+#endif
+
+static dev_info_t dev_info="nmclan_cs";
+static dev_link_t *dev_list;
+
+static char *if_names[]={
+    "Auto", "10baseT", "BNC",
+};
+
+/* ----------------------------------------------------------------------------
+Parameters
+	These are the parameters that can be set during loading with
+	'insmod'.
+---------------------------------------------------------------------------- */
+
+MODULE_DESCRIPTION("New Media PCMCIA ethernet driver");
+MODULE_LICENSE("GPL");
+
+#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
+
+/* 0=auto, 1=10baseT, 2 = 10base2, default=auto */
+INT_MODULE_PARM(if_port, 0);
+
+#ifdef PCMCIA_DEBUG
+INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+#else
+#define DEBUG(n, args...)
+#endif
+
+/* ----------------------------------------------------------------------------
+Function Prototypes
+---------------------------------------------------------------------------- */
+
+static void nmclan_config(dev_link_t *link);
+static void nmclan_release(dev_link_t *link);
+static int nmclan_event(event_t event, int priority,
+			event_callback_args_t *args);
+
+static void nmclan_reset(struct net_device *dev);
+static int mace_config(struct net_device *dev, struct ifmap *map);
+static int mace_open(struct net_device *dev);
+static int mace_close(struct net_device *dev);
+static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static void mace_tx_timeout(struct net_device *dev);
+static irqreturn_t mace_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static struct net_device_stats *mace_get_stats(struct net_device *dev);
+static int mace_rx(struct net_device *dev, unsigned char RxCnt);
+static void restore_multicast_list(struct net_device *dev);
+static void set_multicast_list(struct net_device *dev);
+static struct ethtool_ops netdev_ethtool_ops;
+
+
+static dev_link_t *nmclan_attach(void);
+static void nmclan_detach(dev_link_t *);
+
+/* ----------------------------------------------------------------------------
+nmclan_attach
+	Creates an "instance" of the driver, allocating local data
+	structures for one device.  The device is registered with Card
+	Services.
+---------------------------------------------------------------------------- */
+
+static dev_link_t *nmclan_attach(void)
+{
+    mace_private *lp;
+    dev_link_t *link;
+    struct net_device *dev;
+    client_reg_t client_reg;
+    int ret;
+
+    DEBUG(0, "nmclan_attach()\n");
+    DEBUG(1, "%s\n", rcsid);
+
+    /* Create new ethernet device */
+    dev = alloc_etherdev(sizeof(mace_private));
+    if (!dev)
+	return NULL;
+    lp = netdev_priv(dev);
+    link = &lp->link;
+    link->priv = dev;
+    
+    spin_lock_init(&lp->bank_lock);
+    link->io.NumPorts1 = 32;
+    link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+    link->io.IOAddrLines = 5;
+    link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
+    link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+    link->irq.Handler = &mace_interrupt;
+    link->irq.Instance = dev;
+    link->conf.Attributes = CONF_ENABLE_IRQ;
+    link->conf.Vcc = 50;
+    link->conf.IntType = INT_MEMORY_AND_IO;
+    link->conf.ConfigIndex = 1;
+    link->conf.Present = PRESENT_OPTION;
+
+    lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
+
+    SET_MODULE_OWNER(dev);
+    dev->hard_start_xmit = &mace_start_xmit;
+    dev->set_config = &mace_config;
+    dev->get_stats = &mace_get_stats;
+    dev->set_multicast_list = &set_multicast_list;
+    SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
+    dev->open = &mace_open;
+    dev->stop = &mace_close;
+#ifdef HAVE_TX_TIMEOUT
+    dev->tx_timeout = mace_tx_timeout;
+    dev->watchdog_timeo = TX_TIMEOUT;
+#endif
+
+    /* Register with Card Services */
+    link->next = dev_list;
+    dev_list = link;
+    client_reg.dev_info = &dev_info;
+    client_reg.EventMask =
+	CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+	CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+	CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+    client_reg.event_handler = &nmclan_event;
+    client_reg.Version = 0x0210;
+    client_reg.event_callback_args.client_data = link;
+    ret = pcmcia_register_client(&link->handle, &client_reg);
+    if (ret != 0) {
+	cs_error(link->handle, RegisterClient, ret);
+	nmclan_detach(link);
+	return NULL;
+    }
+
+    return link;
+} /* nmclan_attach */
+
+/* ----------------------------------------------------------------------------
+nmclan_detach
+	This deletes a driver "instance".  The device is de-registered
+	with Card Services.  If it has been released, all local data
+	structures are freed.  Otherwise, the structures will be freed
+	when the device is released.
+---------------------------------------------------------------------------- */
+
+static void nmclan_detach(dev_link_t *link)
+{
+    struct net_device *dev = link->priv;
+    dev_link_t **linkp;
+
+    DEBUG(0, "nmclan_detach(0x%p)\n", link);
+
+    /* Locate device structure */
+    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+	if (*linkp == link) break;
+    if (*linkp == NULL)
+	return;
+
+    if (link->dev)
+	unregister_netdev(dev);
+
+    if (link->state & DEV_CONFIG)
+	nmclan_release(link);
+
+    if (link->handle)
+	pcmcia_deregister_client(link->handle);
+
+    /* Unlink device structure, free bits */
+    *linkp = link->next;
+    free_netdev(dev);
+} /* nmclan_detach */
+
+/* ----------------------------------------------------------------------------
+mace_read
+	Reads a MACE register.  This is bank independent; however, the
+	caller must ensure that this call is not interruptable.  We are
+	assuming that during normal operation, the MACE is always in
+	bank 0.
+---------------------------------------------------------------------------- */
+static int mace_read(mace_private *lp, kio_addr_t ioaddr, int reg)
+{
+  int data = 0xFF;
+  unsigned long flags;
+
+  switch (reg >> 4) {
+    case 0: /* register 0-15 */
+      data = inb(ioaddr + AM2150_MACE_BASE + reg);
+      break;
+    case 1: /* register 16-31 */
+      spin_lock_irqsave(&lp->bank_lock, flags);
+      MACEBANK(1);
+      data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
+      MACEBANK(0);
+      spin_unlock_irqrestore(&lp->bank_lock, flags);
+      break;
+  }
+  return (data & 0xFF);
+} /* mace_read */
+
+/* ----------------------------------------------------------------------------
+mace_write
+	Writes to a MACE register.  This is bank independent; however,
+	the caller must ensure that this call is not interruptable.  We
+	are assuming that during normal operation, the MACE is always in
+	bank 0.
+---------------------------------------------------------------------------- */
+static void mace_write(mace_private *lp, kio_addr_t ioaddr, int reg, int data)
+{
+  unsigned long flags;
+
+  switch (reg >> 4) {
+    case 0: /* register 0-15 */
+      outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg);
+      break;
+    case 1: /* register 16-31 */
+      spin_lock_irqsave(&lp->bank_lock, flags);
+      MACEBANK(1);
+      outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
+      MACEBANK(0);
+      spin_unlock_irqrestore(&lp->bank_lock, flags);
+      break;
+  }
+} /* mace_write */
+
+/* ----------------------------------------------------------------------------
+mace_init
+	Resets the MACE chip.
+---------------------------------------------------------------------------- */
+static int mace_init(mace_private *lp, kio_addr_t ioaddr, char *enet_addr)
+{
+  int i;
+  int ct = 0;
+
+  /* MACE Software reset */
+  mace_write(lp, ioaddr, MACE_BIUCC, 1);
+  while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) {
+    /* Wait for reset bit to be cleared automatically after <= 200ns */;
+    if(++ct > 500)
+    {
+    	printk(KERN_ERR "mace: reset failed, card removed ?\n");
+    	return -1;
+    }
+    udelay(1);
+  }
+  mace_write(lp, ioaddr, MACE_BIUCC, 0);
+
+  /* The Am2150 requires that the MACE FIFOs operate in burst mode. */
+  mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F);
+
+  mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */
+  mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */
+
+  /*
+   * Bit 2-1 PORTSEL[1-0] Port Select.
+   * 00 AUI/10Base-2
+   * 01 10Base-T
+   * 10 DAI Port (reserved in Am2150)
+   * 11 GPSI
+   * For this card, only the first two are valid.
+   * So, PLSCC should be set to
+   * 0x00 for 10Base-2
+   * 0x02 for 10Base-T
+   * Or just set ASEL in PHYCC below!
+   */
+  switch (if_port) {
+    case 1:
+      mace_write(lp, ioaddr, MACE_PLSCC, 0x02);
+      break;
+    case 2:
+      mace_write(lp, ioaddr, MACE_PLSCC, 0x00);
+      break;
+    default:
+      mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4);
+      /* ASEL Auto Select.  When set, the PORTSEL[1-0] bits are overridden,
+	 and the MACE device will automatically select the operating media
+	 interface port. */
+      break;
+  }
+
+  mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR);
+  /* Poll ADDRCHG bit */
+  ct = 0;
+  while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
+  {
+  	if(++ ct > 500)
+  	{
+  		printk(KERN_ERR "mace: ADDRCHG timeout, card removed ?\n");
+  		return -1;
+  	}
+  }
+  /* Set PADR register */
+  for (i = 0; i < ETHER_ADDR_LEN; i++)
+    mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]);
+
+  /* MAC Configuration Control Register should be written last */
+  /* Let set_multicast_list set this. */
+  /* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */
+  mace_write(lp, ioaddr, MACE_MACCC, 0x00);
+  return 0;
+} /* mace_init */
+
+/* ----------------------------------------------------------------------------
+nmclan_config
+	This routine is scheduled to run after a CARD_INSERTION event
+	is received, to configure the PCMCIA socket, and to make the
+	ethernet device available to the system.
+---------------------------------------------------------------------------- */
+
+#define CS_CHECK(fn, ret) \
+  do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+
+static void nmclan_config(dev_link_t *link)
+{
+  client_handle_t handle = link->handle;
+  struct net_device *dev = link->priv;
+  mace_private *lp = netdev_priv(dev);
+  tuple_t tuple;
+  cisparse_t parse;
+  u_char buf[64];
+  int i, last_ret, last_fn;
+  kio_addr_t ioaddr;
+
+  DEBUG(0, "nmclan_config(0x%p)\n", link);
+
+  tuple.Attributes = 0;
+  tuple.TupleData = buf;
+  tuple.TupleDataMax = 64;
+  tuple.TupleOffset = 0;
+  tuple.DesiredTuple = CISTPL_CONFIG;
+  CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+  CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+  CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+  link->conf.ConfigBase = parse.config.base;
+
+  /* Configure card */
+  link->state |= DEV_CONFIG;
+
+  CS_CHECK(RequestIO, pcmcia_request_io(handle, &link->io));
+  CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
+  CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
+  dev->irq = link->irq.AssignedIRQ;
+  dev->base_addr = link->io.BasePort1;
+
+  ioaddr = dev->base_addr;
+
+  /* Read the ethernet address from the CIS. */
+  tuple.DesiredTuple = 0x80 /* CISTPL_CFTABLE_ENTRY_MISC */;
+  tuple.TupleData = buf;
+  tuple.TupleDataMax = 64;
+  tuple.TupleOffset = 0;
+  CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+  CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+  memcpy(dev->dev_addr, tuple.TupleData, ETHER_ADDR_LEN);
+
+  /* Verify configuration by reading the MACE ID. */
+  {
+    char sig[2];
+
+    sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL);
+    sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH);
+    if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) {
+      DEBUG(0, "nmclan_cs configured: mace id=%x %x\n",
+	    sig[0], sig[1]);
+    } else {
+      printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should"
+	     " be 0x40 0x?9\n", sig[0], sig[1]);
+      link->state &= ~DEV_CONFIG_PENDING;
+      return;
+    }
+  }
+
+  if(mace_init(lp, ioaddr, dev->dev_addr) == -1)
+  	goto failed;
+
+  /* The if_port symbol can be set when the module is loaded */
+  if (if_port <= 2)
+    dev->if_port = if_port;
+  else
+    printk(KERN_NOTICE "nmclan_cs: invalid if_port requested\n");
+
+  link->dev = &lp->node;
+  link->state &= ~DEV_CONFIG_PENDING;
+  SET_NETDEV_DEV(dev, &handle_to_dev(handle));
+
+  i = register_netdev(dev);
+  if (i != 0) {
+    printk(KERN_NOTICE "nmclan_cs: register_netdev() failed\n");
+    link->dev = NULL;
+    goto failed;
+  }
+
+  strcpy(lp->node.dev_name, dev->name);
+
+  printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port, hw_addr ",
+	 dev->name, dev->base_addr, dev->irq, if_names[dev->if_port]);
+  for (i = 0; i < 6; i++)
+      printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
+  return;
+
+cs_failed:
+    cs_error(link->handle, last_fn, last_ret);
+failed:
+    nmclan_release(link);
+    return;
+
+} /* nmclan_config */
+
+/* ----------------------------------------------------------------------------
+nmclan_release
+	After a card is removed, nmclan_release() will unregister the
+	net device, and release the PCMCIA configuration.  If the device
+	is still open, this will be postponed until it is closed.
+---------------------------------------------------------------------------- */
+static void nmclan_release(dev_link_t *link)
+{
+
+  DEBUG(0, "nmclan_release(0x%p)\n", link);
+
+  pcmcia_release_configuration(link->handle);
+  pcmcia_release_io(link->handle, &link->io);
+  pcmcia_release_irq(link->handle, &link->irq);
+
+  link->state &= ~DEV_CONFIG;
+}
+
+/* ----------------------------------------------------------------------------
+nmclan_event
+	The card status event handler.  Mostly, this schedules other
+	stuff to run after an event is received.  A CARD_REMOVAL event
+	also sets some flags to discourage the net drivers from trying
+	to talk to the card any more.
+---------------------------------------------------------------------------- */
+static int nmclan_event(event_t event, int priority,
+		       event_callback_args_t *args)
+{
+  dev_link_t *link = args->client_data;
+  struct net_device *dev = link->priv;
+
+  DEBUG(1, "nmclan_event(0x%06x)\n", event);
+
+  switch (event) {
+    case CS_EVENT_CARD_REMOVAL:
+      link->state &= ~DEV_PRESENT;
+      if (link->state & DEV_CONFIG)
+	netif_device_detach(dev);
+      break;
+    case CS_EVENT_CARD_INSERTION:
+      link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+      nmclan_config(link);
+      break;
+    case CS_EVENT_PM_SUSPEND:
+      link->state |= DEV_SUSPEND;
+      /* Fall through... */
+    case CS_EVENT_RESET_PHYSICAL:
+      if (link->state & DEV_CONFIG) {
+	if (link->open)
+	  netif_device_detach(dev);
+	pcmcia_release_configuration(link->handle);
+      }
+      break;
+    case CS_EVENT_PM_RESUME:
+      link->state &= ~DEV_SUSPEND;
+      /* Fall through... */
+    case CS_EVENT_CARD_RESET:
+      if (link->state & DEV_CONFIG) {
+	pcmcia_request_configuration(link->handle, &link->conf);
+	if (link->open) {
+	  nmclan_reset(dev);
+	  netif_device_attach(dev);
+	}
+      }
+      break;
+    case CS_EVENT_RESET_REQUEST:
+      return 1;
+      break;
+  }
+  return 0;
+} /* nmclan_event */
+
+/* ----------------------------------------------------------------------------
+nmclan_reset
+	Reset and restore all of the Xilinx and MACE registers.
+---------------------------------------------------------------------------- */
+static void nmclan_reset(struct net_device *dev)
+{
+  mace_private *lp = netdev_priv(dev);
+
+#if RESET_XILINX
+  dev_link_t *link = &lp->link;
+  conf_reg_t reg;
+  u_long OrigCorValue; 
+
+  /* Save original COR value */
+  reg.Function = 0;
+  reg.Action = CS_READ;
+  reg.Offset = CISREG_COR;
+  reg.Value = 0;
+  pcmcia_access_configuration_register(link->handle, &reg);
+  OrigCorValue = reg.Value;
+
+  /* Reset Xilinx */
+  reg.Action = CS_WRITE;
+  reg.Offset = CISREG_COR;
+  DEBUG(1, "nmclan_reset: OrigCorValue=0x%lX, resetting...\n",
+	OrigCorValue);
+  reg.Value = COR_SOFT_RESET;
+  pcmcia_access_configuration_register(link->handle, &reg);
+  /* Need to wait for 20 ms for PCMCIA to finish reset. */
+
+  /* Restore original COR configuration index */
+  reg.Value = COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK);
+  pcmcia_access_configuration_register(link->handle, &reg);
+  /* Xilinx is now completely reset along with the MACE chip. */
+  lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
+
+#endif /* #if RESET_XILINX */
+
+  /* Xilinx is now completely reset along with the MACE chip. */
+  lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
+
+  /* Reinitialize the MACE chip for operation. */
+  mace_init(lp, dev->base_addr, dev->dev_addr);
+  mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT);
+
+  /* Restore the multicast list and enable TX and RX. */
+  restore_multicast_list(dev);
+} /* nmclan_reset */
+
+/* ----------------------------------------------------------------------------
+mace_config
+	[Someone tell me what this is supposed to do?  Is if_port a defined
+	standard?  If so, there should be defines to indicate 1=10Base-T,
+	2=10Base-2, etc. including limited automatic detection.]
+---------------------------------------------------------------------------- */
+static int mace_config(struct net_device *dev, struct ifmap *map)
+{
+  if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
+    if (map->port <= 2) {
+      dev->if_port = map->port;
+      printk(KERN_INFO "%s: switched to %s port\n", dev->name,
+	     if_names[dev->if_port]);
+    } else
+      return -EINVAL;
+  }
+  return 0;
+} /* mace_config */
+
+/* ----------------------------------------------------------------------------
+mace_open
+	Open device driver.
+---------------------------------------------------------------------------- */
+static int mace_open(struct net_device *dev)
+{
+  kio_addr_t ioaddr = dev->base_addr;
+  mace_private *lp = netdev_priv(dev);
+  dev_link_t *link = &lp->link;
+
+  if (!DEV_OK(link))
+    return -ENODEV;
+
+  link->open++;
+
+  MACEBANK(0);
+
+  netif_start_queue(dev);
+  nmclan_reset(dev);
+
+  return 0; /* Always succeed */
+} /* mace_open */
+
+/* ----------------------------------------------------------------------------
+mace_close
+	Closes device driver.
+---------------------------------------------------------------------------- */
+static int mace_close(struct net_device *dev)
+{
+  kio_addr_t ioaddr = dev->base_addr;
+  mace_private *lp = netdev_priv(dev);
+  dev_link_t *link = &lp->link;
+
+  DEBUG(2, "%s: shutting down ethercard.\n", dev->name);
+
+  /* Mask off all interrupts from the MACE chip. */
+  outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR);
+
+  link->open--;
+  netif_stop_queue(dev);
+
+  return 0;
+} /* mace_close */
+
+static void netdev_get_drvinfo(struct net_device *dev,
+			       struct ethtool_drvinfo *info)
+{
+	strcpy(info->driver, DRV_NAME);
+	strcpy(info->version, DRV_VERSION);
+	sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
+}
+
+#ifdef PCMCIA_DEBUG
+static u32 netdev_get_msglevel(struct net_device *dev)
+{
+	return pc_debug;
+}
+
+static void netdev_set_msglevel(struct net_device *dev, u32 level)
+{
+	pc_debug = level;
+}
+#endif /* PCMCIA_DEBUG */
+
+static struct ethtool_ops netdev_ethtool_ops = {
+	.get_drvinfo		= netdev_get_drvinfo,
+#ifdef PCMCIA_DEBUG
+	.get_msglevel		= netdev_get_msglevel,
+	.set_msglevel		= netdev_set_msglevel,
+#endif /* PCMCIA_DEBUG */
+};
+
+/* ----------------------------------------------------------------------------
+mace_start_xmit
+	This routine begins the packet transmit function.  When completed,
+	it will generate a transmit interrupt.
+
+	According to /usr/src/linux/net/inet/dev.c, if _start_xmit
+	returns 0, the "packet is now solely the responsibility of the
+	driver."  If _start_xmit returns non-zero, the "transmission
+	failed, put skb back into a list."
+---------------------------------------------------------------------------- */
+
+static void mace_tx_timeout(struct net_device *dev)
+{
+  mace_private *lp = netdev_priv(dev);
+  dev_link_t *link = &lp->link;
+
+  printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name);
+#if RESET_ON_TIMEOUT
+  printk("resetting card\n");
+  pcmcia_reset_card(link->handle, NULL);
+#else /* #if RESET_ON_TIMEOUT */
+  printk("NOT resetting card\n");
+#endif /* #if RESET_ON_TIMEOUT */
+  dev->trans_start = jiffies;
+  netif_wake_queue(dev);
+}
+
+static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+  mace_private *lp = netdev_priv(dev);
+  kio_addr_t ioaddr = dev->base_addr;
+
+  netif_stop_queue(dev);
+
+  DEBUG(3, "%s: mace_start_xmit(length = %ld) called.\n",
+	dev->name, (long)skb->len);
+
+#if (!TX_INTERRUPTABLE)
+  /* Disable MACE TX interrupts. */
+  outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT,
+    ioaddr + AM2150_MACE_BASE + MACE_IMR);
+  lp->tx_irq_disabled=1;
+#endif /* #if (!TX_INTERRUPTABLE) */
+
+  {
+    /* This block must not be interrupted by another transmit request!
+       mace_tx_timeout will take care of timer-based retransmissions from
+       the upper layers.  The interrupt handler is guaranteed never to
+       service a transmit interrupt while we are in here.
+    */
+
+    lp->linux_stats.tx_bytes += skb->len;
+    lp->tx_free_frames--;
+
+    /* WARNING: Write the _exact_ number of bytes written in the header! */
+    /* Put out the word header [must be an outw()] . . . */
+    outw(skb->len, ioaddr + AM2150_XMT);
+    /* . . . and the packet [may be any combination of outw() and outb()] */
+    outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1);
+    if (skb->len & 1) {
+      /* Odd byte transfer */
+      outb(skb->data[skb->len-1], ioaddr + AM2150_XMT);
+    }
+
+    dev->trans_start = jiffies;
+
+#if MULTI_TX
+    if (lp->tx_free_frames > 0)
+      netif_start_queue(dev);
+#endif /* #if MULTI_TX */
+  }
+
+#if (!TX_INTERRUPTABLE)
+  /* Re-enable MACE TX interrupts. */
+  lp->tx_irq_disabled=0;
+  outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR);
+#endif /* #if (!TX_INTERRUPTABLE) */
+
+  dev_kfree_skb(skb);
+
+  return 0;
+} /* mace_start_xmit */
+
+/* ----------------------------------------------------------------------------
+mace_interrupt
+	The interrupt handler.
+---------------------------------------------------------------------------- */
+static irqreturn_t mace_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+  struct net_device *dev = (struct net_device *) dev_id;
+  mace_private *lp = netdev_priv(dev);
+  kio_addr_t ioaddr = dev->base_addr;
+  int status;
+  int IntrCnt = MACE_MAX_IR_ITERATIONS;
+
+  if (dev == NULL) {
+    DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.\n",
+	  irq);
+    return IRQ_NONE;
+  }
+
+  if (lp->tx_irq_disabled) {
+    printk(
+      (lp->tx_irq_disabled?
+       KERN_NOTICE "%s: Interrupt with tx_irq_disabled "
+       "[isr=%02X, imr=%02X]\n": 
+       KERN_NOTICE "%s: Re-entering the interrupt handler "
+       "[isr=%02X, imr=%02X]\n"),
+      dev->name,
+      inb(ioaddr + AM2150_MACE_BASE + MACE_IR),
+      inb(ioaddr + AM2150_MACE_BASE + MACE_IMR)
+    );
+    /* WARNING: MACE_IR has been read! */
+    return IRQ_NONE;
+  }
+
+  if (!netif_device_present(dev)) {
+    DEBUG(2, "%s: interrupt from dead card\n", dev->name);
+    return IRQ_NONE;
+  }
+
+  do {
+    /* WARNING: MACE_IR is a READ/CLEAR port! */
+    status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR);
+
+    DEBUG(3, "mace_interrupt: irq 0x%X status 0x%X.\n", irq, status);
+
+    if (status & MACE_IR_RCVINT) {
+      mace_rx(dev, MACE_MAX_RX_ITERATIONS);
+    }
+
+    if (status & MACE_IR_XMTINT) {
+      unsigned char fifofc;
+      unsigned char xmtrc;
+      unsigned char xmtfs;
+
+      fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC);
+      if ((fifofc & MACE_FIFOFC_XMTFC)==0) {
+	lp->linux_stats.tx_errors++;
+	outb(0xFF, ioaddr + AM2150_XMT_SKIP);
+      }
+
+      /* Transmit Retry Count (XMTRC, reg 4) */
+      xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC);
+      if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++;
+      lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC);
+
+      if (
+        (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) &
+        MACE_XMTFS_XMTSV /* Transmit Status Valid */
+      ) {
+	lp->mace_stats.xmtsv++;
+
+	if (xmtfs & ~MACE_XMTFS_XMTSV) {
+	  if (xmtfs & MACE_XMTFS_UFLO) {
+	    /* Underflow.  Indicates that the Transmit FIFO emptied before
+	       the end of frame was reached. */
+	    lp->mace_stats.uflo++;
+	  }
+	  if (xmtfs & MACE_XMTFS_LCOL) {
+	    /* Late Collision */
+	    lp->mace_stats.lcol++;
+	  }
+	  if (xmtfs & MACE_XMTFS_MORE) {
+	    /* MORE than one retry was needed */
+	    lp->mace_stats.more++;
+	  }
+	  if (xmtfs & MACE_XMTFS_ONE) {
+	    /* Exactly ONE retry occurred */
+	    lp->mace_stats.one++;
+	  }
+	  if (xmtfs & MACE_XMTFS_DEFER) {
+	    /* Transmission was defered */
+	    lp->mace_stats.defer++;
+	  }
+	  if (xmtfs & MACE_XMTFS_LCAR) {
+	    /* Loss of carrier */
+	    lp->mace_stats.lcar++;
+	  }
+	  if (xmtfs & MACE_XMTFS_RTRY) {
+	    /* Retry error: transmit aborted after 16 attempts */
+	    lp->mace_stats.rtry++;
+	  }
+        } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */
+
+      } /* if (xmtfs & MACE_XMTFS_XMTSV) */
+
+      lp->linux_stats.tx_packets++;
+      lp->tx_free_frames++;
+      netif_wake_queue(dev);
+    } /* if (status & MACE_IR_XMTINT) */
+
+    if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) {
+      if (status & MACE_IR_JAB) {
+        /* Jabber Error.  Excessive transmit duration (20-150ms). */
+        lp->mace_stats.jab++;
+      }
+      if (status & MACE_IR_BABL) {
+        /* Babble Error.  >1518 bytes transmitted. */
+        lp->mace_stats.babl++;
+      }
+      if (status & MACE_IR_CERR) {
+	/* Collision Error.  CERR indicates the absence of the
+	   Signal Quality Error Test message after a packet
+	   transmission. */
+        lp->mace_stats.cerr++;
+      }
+      if (status & MACE_IR_RCVCCO) {
+        /* Receive Collision Count Overflow; */
+        lp->mace_stats.rcvcco++;
+      }
+      if (status & MACE_IR_RNTPCO) {
+        /* Runt Packet Count Overflow */
+        lp->mace_stats.rntpco++;
+      }
+      if (status & MACE_IR_MPCO) {
+        /* Missed Packet Count Overflow */
+        lp->mace_stats.mpco++;
+      }
+    } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */
+
+  } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt));
+
+  return IRQ_HANDLED;
+} /* mace_interrupt */
+
+/* ----------------------------------------------------------------------------
+mace_rx
+	Receives packets.
+---------------------------------------------------------------------------- */
+static int mace_rx(struct net_device *dev, unsigned char RxCnt)
+{
+  mace_private *lp = netdev_priv(dev);
+  kio_addr_t ioaddr = dev->base_addr;
+  unsigned char rx_framecnt;
+  unsigned short rx_status;
+
+  while (
+    ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) &&
+    (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */
+    (RxCnt--)
+  ) {
+    rx_status = inw(ioaddr + AM2150_RCV);
+
+    DEBUG(3, "%s: in mace_rx(), framecnt 0x%X, rx_status"
+	  " 0x%X.\n", dev->name, rx_framecnt, rx_status);
+
+    if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */
+      lp->linux_stats.rx_errors++;
+      if (rx_status & MACE_RCVFS_OFLO) {
+        lp->mace_stats.oflo++;
+      }
+      if (rx_status & MACE_RCVFS_CLSN) {
+        lp->mace_stats.clsn++;
+      }
+      if (rx_status & MACE_RCVFS_FRAM) {
+	lp->mace_stats.fram++;
+      }
+      if (rx_status & MACE_RCVFS_FCS) {
+        lp->mace_stats.fcs++;
+      }
+    } else {
+      short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4;
+        /* Auto Strip is off, always subtract 4 */
+      struct sk_buff *skb;
+
+      lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV);
+        /* runt packet count */
+      lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV);
+        /* rcv collision count */
+
+      DEBUG(3, "    receiving packet size 0x%X rx_status"
+	    " 0x%X.\n", pkt_len, rx_status);
+
+      skb = dev_alloc_skb(pkt_len+2);
+
+      if (skb != NULL) {
+	skb->dev = dev;
+
+	skb_reserve(skb, 2);
+	insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1);
+	if (pkt_len & 1)
+	    *(skb->tail-1) = inb(ioaddr + AM2150_RCV);
+	skb->protocol = eth_type_trans(skb, dev);
+	
+	netif_rx(skb); /* Send the packet to the upper (protocol) layers. */
+
+	dev->last_rx = jiffies;
+	lp->linux_stats.rx_packets++;
+	lp->linux_stats.rx_bytes += skb->len;
+	outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
+	continue;
+      } else {
+	DEBUG(1, "%s: couldn't allocate a sk_buff of size"
+	      " %d.\n", dev->name, pkt_len);
+	lp->linux_stats.rx_dropped++;
+      }
+    }
+    outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
+  } /* while */
+
+  return 0;
+} /* mace_rx */
+
+/* ----------------------------------------------------------------------------
+pr_linux_stats
+---------------------------------------------------------------------------- */
+static void pr_linux_stats(struct net_device_stats *pstats)
+{
+  DEBUG(2, "pr_linux_stats\n");
+  DEBUG(2, " rx_packets=%-7ld        tx_packets=%ld\n",
+	(long)pstats->rx_packets, (long)pstats->tx_packets);
+  DEBUG(2, " rx_errors=%-7ld         tx_errors=%ld\n",
+	(long)pstats->rx_errors, (long)pstats->tx_errors);
+  DEBUG(2, " rx_dropped=%-7ld        tx_dropped=%ld\n",
+	(long)pstats->rx_dropped, (long)pstats->tx_dropped);
+  DEBUG(2, " multicast=%-7ld         collisions=%ld\n",
+	(long)pstats->multicast, (long)pstats->collisions);
+
+  DEBUG(2, " rx_length_errors=%-7ld  rx_over_errors=%ld\n",
+	(long)pstats->rx_length_errors, (long)pstats->rx_over_errors);
+  DEBUG(2, " rx_crc_errors=%-7ld     rx_frame_errors=%ld\n",
+	(long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors);
+  DEBUG(2, " rx_fifo_errors=%-7ld    rx_missed_errors=%ld\n",
+	(long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors);
+
+  DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n",
+	(long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors);
+  DEBUG(2, " tx_fifo_errors=%-7ld    tx_heartbeat_errors=%ld\n",
+	(long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors);
+  DEBUG(2, " tx_window_errors=%ld\n",
+	(long)pstats->tx_window_errors);
+} /* pr_linux_stats */
+
+/* ----------------------------------------------------------------------------
+pr_mace_stats
+---------------------------------------------------------------------------- */
+static void pr_mace_stats(mace_statistics *pstats)
+{
+  DEBUG(2, "pr_mace_stats\n");
+
+  DEBUG(2, " xmtsv=%-7d             uflo=%d\n",
+	pstats->xmtsv, pstats->uflo);
+  DEBUG(2, " lcol=%-7d              more=%d\n",
+	pstats->lcol, pstats->more);
+  DEBUG(2, " one=%-7d               defer=%d\n",
+	pstats->one, pstats->defer);
+  DEBUG(2, " lcar=%-7d              rtry=%d\n",
+	pstats->lcar, pstats->rtry);
+
+  /* MACE_XMTRC */
+  DEBUG(2, " exdef=%-7d             xmtrc=%d\n",
+	pstats->exdef, pstats->xmtrc);
+
+  /* RFS1--Receive Status (RCVSTS) */
+  DEBUG(2, " oflo=%-7d              clsn=%d\n",
+	pstats->oflo, pstats->clsn);
+  DEBUG(2, " fram=%-7d              fcs=%d\n",
+	pstats->fram, pstats->fcs);
+
+  /* RFS2--Runt Packet Count (RNTPC) */
+  /* RFS3--Receive Collision Count (RCVCC) */
+  DEBUG(2, " rfs_rntpc=%-7d         rfs_rcvcc=%d\n",
+	pstats->rfs_rntpc, pstats->rfs_rcvcc);
+
+  /* MACE_IR */
+  DEBUG(2, " jab=%-7d               babl=%d\n",
+	pstats->jab, pstats->babl);
+  DEBUG(2, " cerr=%-7d              rcvcco=%d\n",
+	pstats->cerr, pstats->rcvcco);
+  DEBUG(2, " rntpco=%-7d            mpco=%d\n",
+	pstats->rntpco, pstats->mpco);
+
+  /* MACE_MPC */
+  DEBUG(2, " mpc=%d\n", pstats->mpc);
+
+  /* MACE_RNTPC */
+  DEBUG(2, " rntpc=%d\n", pstats->rntpc);
+
+  /* MACE_RCVCC */
+  DEBUG(2, " rcvcc=%d\n", pstats->rcvcc);
+
+} /* pr_mace_stats */
+
+/* ----------------------------------------------------------------------------
+update_stats
+	Update statistics.  We change to register window 1, so this
+	should be run single-threaded if the device is active. This is
+	expected to be a rare operation, and it's simpler for the rest
+	of the driver to assume that window 0 is always valid rather
+	than use a special window-state variable.
+
+	oflo & uflo should _never_ occur since it would mean the Xilinx
+	was not able to transfer data between the MACE FIFO and the
+	card's SRAM fast enough.  If this happens, something is
+	seriously wrong with the hardware.
+---------------------------------------------------------------------------- */
+static void update_stats(kio_addr_t ioaddr, struct net_device *dev)
+{
+  mace_private *lp = netdev_priv(dev);
+
+  lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC);
+  lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC);
+  lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC);
+  /* At this point, mace_stats is fully updated for this call.
+     We may now update the linux_stats. */
+
+  /* The MACE has no equivalent for linux_stats field which are commented
+     out. */
+
+  /* lp->linux_stats.multicast; */
+  lp->linux_stats.collisions = 
+    lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc;
+    /* Collision: The MACE may retry sending a packet 15 times
+       before giving up.  The retry count is in XMTRC.
+       Does each retry constitute a collision?
+       If so, why doesn't the RCVCC record these collisions? */
+
+  /* detailed rx_errors: */
+  lp->linux_stats.rx_length_errors = 
+    lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc;
+  /* lp->linux_stats.rx_over_errors */
+  lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs;
+  lp->linux_stats.rx_frame_errors = lp->mace_stats.fram;
+  lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo;
+  lp->linux_stats.rx_missed_errors = 
+    lp->mace_stats.mpco * 256 + lp->mace_stats.mpc;
+
+  /* detailed tx_errors */
+  lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry;
+  lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar;
+    /* LCAR usually results from bad cabling. */
+  lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo;
+  lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr;
+  /* lp->linux_stats.tx_window_errors; */
+
+  return;
+} /* update_stats */
+
+/* ----------------------------------------------------------------------------
+mace_get_stats
+	Gathers ethernet statistics from the MACE chip.
+---------------------------------------------------------------------------- */
+static struct net_device_stats *mace_get_stats(struct net_device *dev)
+{
+  mace_private *lp = netdev_priv(dev);
+
+  update_stats(dev->base_addr, dev);
+
+  DEBUG(1, "%s: updating the statistics.\n", dev->name);
+  pr_linux_stats(&lp->linux_stats);
+  pr_mace_stats(&lp->mace_stats);
+
+  return &lp->linux_stats;
+} /* net_device_stats */
+
+/* ----------------------------------------------------------------------------
+updateCRC
+	Modified from Am79C90 data sheet.
+---------------------------------------------------------------------------- */
+
+#ifdef BROKEN_MULTICAST
+
+static void updateCRC(int *CRC, int bit)
+{
+  int poly[]={
+    1,1,1,0, 1,1,0,1,
+    1,0,1,1, 1,0,0,0,
+    1,0,0,0, 0,0,1,1,
+    0,0,1,0, 0,0,0,0
+  }; /* CRC polynomial.  poly[n] = coefficient of the x**n term of the
+	CRC generator polynomial. */
+
+  int j;
+
+  /* shift CRC and control bit (CRC[32]) */
+  for (j = 32; j > 0; j--)
+    CRC[j] = CRC[j-1];
+  CRC[0] = 0;
+
+  /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */
+  if (bit ^ CRC[32])
+    for (j = 0; j < 32; j++)
+      CRC[j] ^= poly[j];
+} /* updateCRC */
+
+/* ----------------------------------------------------------------------------
+BuildLAF
+	Build logical address filter.
+	Modified from Am79C90 data sheet.
+
+Input
+	ladrf: logical address filter (contents initialized to 0)
+	adr: ethernet address
+---------------------------------------------------------------------------- */
+static void BuildLAF(int *ladrf, int *adr)
+{
+  int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */
+
+  int i, byte; /* temporary array indices */
+  int hashcode; /* the output object */
+
+  CRC[32]=0;
+
+  for (byte = 0; byte < 6; byte++)
+    for (i = 0; i < 8; i++)
+      updateCRC(CRC, (adr[byte] >> i) & 1);
+
+  hashcode = 0;
+  for (i = 0; i < 6; i++)
+    hashcode = (hashcode << 1) + CRC[i];
+
+  byte = hashcode >> 3;
+  ladrf[byte] |= (1 << (hashcode & 7));
+
+#ifdef PCMCIA_DEBUG
+  if (pc_debug > 2) {
+    printk(KERN_DEBUG "    adr =");
+    for (i = 0; i < 6; i++)
+      printk(" %02X", adr[i]);
+    printk("\n" KERN_DEBUG "    hashcode = %d(decimal), ladrf[0:63]"
+	   " =", hashcode);
+    for (i = 0; i < 8; i++)
+      printk(" %02X", ladrf[i]);
+    printk("\n");
+  }
+#endif
+} /* BuildLAF */
+
+/* ----------------------------------------------------------------------------
+restore_multicast_list
+	Restores the multicast filter for MACE chip to the last
+	set_multicast_list() call.
+
+Input
+	multicast_num_addrs
+	multicast_ladrf[]
+---------------------------------------------------------------------------- */
+static void restore_multicast_list(struct net_device *dev)
+{
+  mace_private *lp = netdev_priv(dev);
+  int num_addrs = lp->multicast_num_addrs;
+  int *ladrf = lp->multicast_ladrf;
+  kio_addr_t ioaddr = dev->base_addr;
+  int i;
+
+  DEBUG(2, "%s: restoring Rx mode to %d addresses.\n",
+	dev->name, num_addrs);
+
+  if (num_addrs > 0) {
+
+    DEBUG(1, "Attempt to restore multicast list detected.\n");
+
+    mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR);
+    /* Poll ADDRCHG bit */
+    while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
+      ;
+    /* Set LADRF register */
+    for (i = 0; i < MACE_LADRF_LEN; i++)
+      mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]);
+
+    mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL);
+    mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
+
+  } else if (num_addrs < 0) {
+
+    /* Promiscuous mode: receive all packets */
+    mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
+    mace_write(lp, ioaddr, MACE_MACCC,
+      MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
+    );
+
+  } else {
+
+    /* Normal mode */
+    mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
+    mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
+
+  }
+} /* restore_multicast_list */
+
+/* ----------------------------------------------------------------------------
+set_multicast_list
+	Set or clear the multicast filter for this adaptor.
+
+Input
+	num_addrs == -1	Promiscuous mode, receive all packets
+	num_addrs == 0	Normal mode, clear multicast list
+	num_addrs > 0	Multicast mode, receive normal and MC packets, and do
+			best-effort filtering.
+Output
+	multicast_num_addrs
+	multicast_ladrf[]
+---------------------------------------------------------------------------- */
+
+static void set_multicast_list(struct net_device *dev)
+{
+  mace_private *lp = netdev_priv(dev);
+  int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */
+  int i;
+  struct dev_mc_list *dmi = dev->mc_list;
+
+#ifdef PCMCIA_DEBUG
+  if (pc_debug > 1) {
+    static int old;
+    if (dev->mc_count != old) {
+      old = dev->mc_count;
+      DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
+	    dev->name, old);
+    }
+  }
+#endif
+
+  /* Set multicast_num_addrs. */
+  lp->multicast_num_addrs = dev->mc_count;
+
+  /* Set multicast_ladrf. */
+  if (num_addrs > 0) {
+    /* Calculate multicast logical address filter */
+    memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN);
+    for (i = 0; i < dev->mc_count; i++) {
+      memcpy(adr, dmi->dmi_addr, ETHER_ADDR_LEN);
+      dmi = dmi->next;
+      BuildLAF(lp->multicast_ladrf, adr);
+    }
+  }
+
+  restore_multicast_list(dev);
+
+} /* set_multicast_list */
+
+#endif /* BROKEN_MULTICAST */
+
+static void restore_multicast_list(struct net_device *dev)
+{
+  kio_addr_t ioaddr = dev->base_addr;
+  mace_private *lp = netdev_priv(dev);
+
+  DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", dev->name,
+	lp->multicast_num_addrs);
+
+  if (dev->flags & IFF_PROMISC) {
+    /* Promiscuous mode: receive all packets */
+    mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
+    mace_write(lp, ioaddr, MACE_MACCC,
+      MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
+    );
+  } else {
+    /* Normal mode */
+    mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
+    mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
+  }
+} /* restore_multicast_list */
+
+static void set_multicast_list(struct net_device *dev)
+{
+  mace_private *lp = netdev_priv(dev);
+
+#ifdef PCMCIA_DEBUG
+  if (pc_debug > 1) {
+    static int old;
+    if (dev->mc_count != old) {
+      old = dev->mc_count;
+      DEBUG(0, "%s: setting Rx mode to %d addresses.\n",
+	    dev->name, old);
+    }
+  }
+#endif
+
+  lp->multicast_num_addrs = dev->mc_count;
+  restore_multicast_list(dev);
+
+} /* set_multicast_list */
+
+static struct pcmcia_driver nmclan_cs_driver = {
+	.owner		= THIS_MODULE,
+	.drv		= {
+		.name	= "nmclan_cs",
+	},
+	.attach		= nmclan_attach,
+	.detach		= nmclan_detach,
+};
+
+static int __init init_nmclan_cs(void)
+{
+	return pcmcia_register_driver(&nmclan_cs_driver);
+}
+
+static void __exit exit_nmclan_cs(void)
+{
+	pcmcia_unregister_driver(&nmclan_cs_driver);
+	BUG_ON(dev_list != NULL);
+}
+
+module_init(init_nmclan_cs);
+module_exit(exit_nmclan_cs);