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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-07-13 15:38:08 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-10 20:04:12 -0700
commit115978859272b958366d4a08c99a24f9625fa663 (patch)
treee3eb08a76c0180bd5efa36985306878cbea5845f /drivers/net/ethernet/i825xx/ni52.c
parentae150435b59e68de00546330241727f2fec54517 (diff)
i825xx: Move the Intel 82586/82593/82596 based drivers
Move the drivers that use the i82586/i82593/i82596 chipsets into drivers/net/ethernet/i825xx/ and make the necessary Kconfig and Makefile changes. There were 4 3Com drivers which were initially moved into 3com/, which now reside in i825xx since they all used the i82586 chip. CC: Philip Blundell <philb@gnu.org> CC: Russell King <linux@arm.linux.org.uk> CC: <aris@cathedrallabs.org> CC: Donald Becker <becker@scyld.com> CC: Chris Beauregard <cpbeaure@undergrad.math.uwaterloo.ca> CC: Richard Procter <rnp@paradise.net.nz> CC: Andries Brouwer <aeb@cwi.nl> CC: "M.Hipp" <hippm@informatik.uni-tuebingen.de> CC: Richard Hirst <richard@sleepie.demon.co.uk> CC: Sam Creasey <sammy@oh.verio.com> CC: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/i825xx/ni52.c')
-rw-r--r--drivers/net/ethernet/i825xx/ni52.c1346
1 files changed, 1346 insertions, 0 deletions
diff --git a/drivers/net/ethernet/i825xx/ni52.c b/drivers/net/ethernet/i825xx/ni52.c
new file mode 100644
index 00000000000..d973fc6c6b8
--- /dev/null
+++ b/drivers/net/ethernet/i825xx/ni52.c
@@ -0,0 +1,1346 @@
+/*
+ * net-3-driver for the NI5210 card (i82586 Ethernet chip)
+ *
+ * This is an extension to the Linux operating system, and is covered by the
+ * same GNU General Public License that covers that work.
+ *
+ * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later)
+ * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de)
+ * [feel free to mail ....]
+ *
+ * when using as module: (no autoprobing!)
+ * run with e.g:
+ * insmod ni52.o io=0x360 irq=9 memstart=0xd0000 memend=0xd4000
+ *
+ * CAN YOU PLEASE REPORT ME YOUR PERFORMANCE EXPERIENCES !!.
+ *
+ * If you find a bug, please report me:
+ * The kernel panic output and any kmsg from the ni52 driver
+ * the ni5210-driver-version and the linux-kernel version
+ * how many shared memory (memsize) on the netcard,
+ * bootprom: yes/no, base_addr, mem_start
+ * maybe the ni5210-card revision and the i82586 version
+ *
+ * autoprobe for: base_addr: 0x300,0x280,0x360,0x320,0x340
+ * mem_start: 0xd0000,0xd2000,0xc8000,0xca000,0xd4000,0xd6000,
+ * 0xd8000,0xcc000,0xce000,0xda000,0xdc000
+ *
+ * sources:
+ * skeleton.c from Donald Becker
+ *
+ * I have also done a look in the following sources: (mail me if you need them)
+ * crynwr-packet-driver by Russ Nelson
+ * Garret A. Wollman's (fourth) i82586-driver for BSD
+ * (before getting an i82596 (yes 596 not 586) manual, the existing drivers
+ * helped me a lot to understand this tricky chip.)
+ *
+ * Known Problems:
+ * The internal sysbus seems to be slow. So we often lose packets because of
+ * overruns while receiving from a fast remote host.
+ * This can slow down TCP connections. Maybe the newer ni5210 cards are
+ * better. My experience is, that if a machine sends with more than about
+ * 500-600K/s the fifo/sysbus overflows.
+ *
+ * IMPORTANT NOTE:
+ * On fast networks, it's a (very) good idea to have 16K shared memory. With
+ * 8K, we can store only 4 receive frames, so it can (easily) happen that a
+ * remote machine 'overruns' our system.
+ *
+ * Known i82586/card problems (I'm sure, there are many more!):
+ * Running the NOP-mode, the i82586 sometimes seems to forget to report
+ * every xmit-interrupt until we restart the CU.
+ * Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit
+ * in the RBD-Struct which indicates an end of the RBD queue.
+ * Instead, the RU fetches another (randomly selected and
+ * usually used) RBD and begins to fill it. (Maybe, this happens only if
+ * the last buffer from the previous RFD fits exact into the queue and
+ * the next RFD can't fetch an initial RBD. Anyone knows more? )
+ *
+ * results from ftp performance tests with Linux 1.2.5
+ * send and receive about 350-400 KByte/s (peak up to 460 kbytes/s)
+ * sending in NOP-mode: peak performance up to 530K/s (but better don't
+ * run this mode)
+ */
+
+/*
+ * 29.Sept.96: virt_to_bus changes for new memory scheme
+ * 19.Feb.96: more Mcast changes, module support (MH)
+ *
+ * 18.Nov.95: Mcast changes (AC).
+ *
+ * 23.April.95: fixed(?) receiving problems by configuring a RFD more
+ * than the number of RBD's. Can maybe cause other problems.
+ * 18.April.95: Added MODULE support (MH)
+ * 17.April.95: MC related changes in init586() and set_multicast_list().
+ * removed use of 'jiffies' in init586() (MH)
+ *
+ * 19.Sep.94: Added Multicast support (not tested yet) (MH)
+ *
+ * 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling.
+ * Now, every RFD has exact one RBD. (MH)
+ *
+ * 14.Sep.94: added promiscuous mode, a few cleanups (MH)
+ *
+ * 19.Aug.94: changed request_irq() parameter (MH)
+ *
+ * 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH)
+ *
+ * 19.July.94: lotsa cleanups .. (MH)
+ *
+ * 17.July.94: some patches ... verified to run with 1.1.29 (MH)
+ *
+ * 4.July.94: patches for Linux 1.1.24 (MH)
+ *
+ * 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH)
+ *
+ * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff,
+ * too (MH)
+ *
+ * < 30.Sep.93: first versions
+ */
+
+static int debuglevel; /* debug-printk 0: off 1: a few 2: more */
+static int automatic_resume; /* experimental .. better should be zero */
+static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */
+static int fifo = 0x8; /* don't change */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <asm/io.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include "ni52.h"
+
+#define DRV_NAME "ni52"
+
+#define DEBUG /* debug on */
+#define SYSBUSVAL 1 /* 8 Bit */
+
+#define ni_attn586() { outb(0, dev->base_addr + NI52_ATTENTION); }
+#define ni_reset586() { outb(0, dev->base_addr + NI52_RESET); }
+#define ni_disint() { outb(0, dev->base_addr + NI52_INTDIS); }
+#define ni_enaint() { outb(0, dev->base_addr + NI52_INTENA); }
+
+#define make32(ptr16) ((void __iomem *)(p->memtop + (short) (ptr16)))
+#define make24(ptr32) ((char __iomem *)(ptr32)) - p->base
+#define make16(ptr32) ((unsigned short) ((char __iomem *)(ptr32)\
+ - p->memtop))
+
+/******************* how to calculate the buffers *****************************
+
+ * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
+ * --------------- in a different (more stable?) mode. Only in this mode it's
+ * possible to configure the driver with 'NO_NOPCOMMANDS'
+
+sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
+sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
+sizeof(rfd) = 24; sizeof(rbd) = 12;
+sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
+sizeof(nop_cmd) = 8;
+
+ * if you don't know the driver, better do not change these values: */
+
+#define RECV_BUFF_SIZE 1524 /* slightly oversized */
+#define XMIT_BUFF_SIZE 1524 /* slightly oversized */
+#define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */
+#define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */
+#define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */
+#define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
+
+/**************************************************************************/
+
+
+#define NI52_TOTAL_SIZE 16
+#define NI52_ADDR0 0x02
+#define NI52_ADDR1 0x07
+#define NI52_ADDR2 0x01
+
+static int ni52_probe1(struct net_device *dev, int ioaddr);
+static irqreturn_t ni52_interrupt(int irq, void *dev_id);
+static int ni52_open(struct net_device *dev);
+static int ni52_close(struct net_device *dev);
+static netdev_tx_t ni52_send_packet(struct sk_buff *, struct net_device *);
+static struct net_device_stats *ni52_get_stats(struct net_device *dev);
+static void set_multicast_list(struct net_device *dev);
+static void ni52_timeout(struct net_device *dev);
+
+/* helper-functions */
+static int init586(struct net_device *dev);
+static int check586(struct net_device *dev, unsigned size);
+static void alloc586(struct net_device *dev);
+static void startrecv586(struct net_device *dev);
+static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr);
+static void ni52_rcv_int(struct net_device *dev);
+static void ni52_xmt_int(struct net_device *dev);
+static void ni52_rnr_int(struct net_device *dev);
+
+struct priv {
+ char __iomem *base;
+ char __iomem *mapped;
+ char __iomem *memtop;
+ spinlock_t spinlock;
+ int reset;
+ struct rfd_struct __iomem *rfd_last, *rfd_top, *rfd_first;
+ struct scp_struct __iomem *scp;
+ struct iscp_struct __iomem *iscp;
+ struct scb_struct __iomem *scb;
+ struct tbd_struct __iomem *xmit_buffs[NUM_XMIT_BUFFS];
+#if (NUM_XMIT_BUFFS == 1)
+ struct transmit_cmd_struct __iomem *xmit_cmds[2];
+ struct nop_cmd_struct __iomem *nop_cmds[2];
+#else
+ struct transmit_cmd_struct __iomem *xmit_cmds[NUM_XMIT_BUFFS];
+ struct nop_cmd_struct __iomem *nop_cmds[NUM_XMIT_BUFFS];
+#endif
+ int nop_point, num_recv_buffs;
+ char __iomem *xmit_cbuffs[NUM_XMIT_BUFFS];
+ int xmit_count, xmit_last;
+};
+
+/* wait for command with timeout: */
+static void wait_for_scb_cmd(struct net_device *dev)
+{
+ struct priv *p = netdev_priv(dev);
+ int i;
+ for (i = 0; i < 16384; i++) {
+ if (readb(&p->scb->cmd_cuc) == 0)
+ break;
+ udelay(4);
+ if (i == 16383) {
+ printk(KERN_ERR "%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",
+ dev->name, readb(&p->scb->cmd_cuc), readb(&p->scb->cus));
+ if (!p->reset) {
+ p->reset = 1;
+ ni_reset586();
+ }
+ }
+ }
+}
+
+static void wait_for_scb_cmd_ruc(struct net_device *dev)
+{
+ struct priv *p = netdev_priv(dev);
+ int i;
+ for (i = 0; i < 16384; i++) {
+ if (readb(&p->scb->cmd_ruc) == 0)
+ break;
+ udelay(4);
+ if (i == 16383) {
+ printk(KERN_ERR "%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",
+ dev->name, readb(&p->scb->cmd_ruc),
+ readb(&p->scb->rus));
+ if (!p->reset) {
+ p->reset = 1;
+ ni_reset586();
+ }
+ }
+ }
+}
+
+static void wait_for_stat_compl(void __iomem *p)
+{
+ struct nop_cmd_struct __iomem *addr = p;
+ int i;
+ for (i = 0; i < 32767; i++) {
+ if (readw(&((addr)->cmd_status)) & STAT_COMPL)
+ break;
+ udelay(32);
+ }
+}
+
+/**********************************************
+ * close device
+ */
+static int ni52_close(struct net_device *dev)
+{
+ free_irq(dev->irq, dev);
+ ni_reset586(); /* the hard way to stop the receiver */
+ netif_stop_queue(dev);
+ return 0;
+}
+
+/**********************************************
+ * open device
+ */
+static int ni52_open(struct net_device *dev)
+{
+ int ret;
+
+ ni_disint();
+ alloc586(dev);
+ init586(dev);
+ startrecv586(dev);
+ ni_enaint();
+
+ ret = request_irq(dev->irq, ni52_interrupt, 0, dev->name, dev);
+ if (ret) {
+ ni_reset586();
+ return ret;
+ }
+ netif_start_queue(dev);
+ return 0; /* most done by init */
+}
+
+static int check_iscp(struct net_device *dev, void __iomem *addr)
+{
+ struct iscp_struct __iomem *iscp = addr;
+ struct priv *p = netdev_priv(dev);
+ memset_io(iscp, 0, sizeof(struct iscp_struct));
+
+ writel(make24(iscp), &p->scp->iscp);
+ writeb(1, &iscp->busy);
+
+ ni_reset586();
+ ni_attn586();
+ mdelay(32); /* wait a while... */
+ /* i82586 clears 'busy' after successful init */
+ if (readb(&iscp->busy))
+ return 0;
+ return 1;
+}
+
+/**********************************************
+ * Check to see if there's an 82586 out there.
+ */
+static int check586(struct net_device *dev, unsigned size)
+{
+ struct priv *p = netdev_priv(dev);
+ int i;
+
+ p->mapped = ioremap(dev->mem_start, size);
+ if (!p->mapped)
+ return 0;
+
+ p->base = p->mapped + size - 0x01000000;
+ p->memtop = p->mapped + size;
+ p->scp = (struct scp_struct __iomem *)(p->base + SCP_DEFAULT_ADDRESS);
+ p->scb = (struct scb_struct __iomem *) p->mapped;
+ p->iscp = (struct iscp_struct __iomem *)p->scp - 1;
+ memset_io(p->scp, 0, sizeof(struct scp_struct));
+ for (i = 0; i < sizeof(struct scp_struct); i++)
+ /* memory was writeable? */
+ if (readb((char __iomem *)p->scp + i))
+ goto Enodev;
+ writeb(SYSBUSVAL, &p->scp->sysbus); /* 1 = 8Bit-Bus, 0 = 16 Bit */
+ if (readb(&p->scp->sysbus) != SYSBUSVAL)
+ goto Enodev;
+
+ if (!check_iscp(dev, p->mapped))
+ goto Enodev;
+ if (!check_iscp(dev, p->iscp))
+ goto Enodev;
+ return 1;
+Enodev:
+ iounmap(p->mapped);
+ return 0;
+}
+
+/******************************************************************
+ * set iscp at the right place, called by ni52_probe1 and open586.
+ */
+static void alloc586(struct net_device *dev)
+{
+ struct priv *p = netdev_priv(dev);
+
+ ni_reset586();
+ mdelay(32);
+
+ memset_io(p->iscp, 0, sizeof(struct iscp_struct));
+ memset_io(p->scp , 0, sizeof(struct scp_struct));
+
+ writel(make24(p->iscp), &p->scp->iscp);
+ writeb(SYSBUSVAL, &p->scp->sysbus);
+ writew(make16(p->scb), &p->iscp->scb_offset);
+
+ writeb(1, &p->iscp->busy);
+ ni_reset586();
+ ni_attn586();
+
+ mdelay(32);
+
+ if (readb(&p->iscp->busy))
+ printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name);
+
+ p->reset = 0;
+
+ memset_io(p->scb, 0, sizeof(struct scb_struct));
+}
+
+/* set: io,irq,memstart,memend or set it when calling insmod */
+static int irq = 9;
+static int io = 0x300;
+static long memstart; /* e.g 0xd0000 */
+static long memend; /* e.g 0xd4000 */
+
+/**********************************************
+ * probe the ni5210-card
+ */
+struct net_device * __init ni52_probe(int unit)
+{
+ struct net_device *dev = alloc_etherdev(sizeof(struct priv));
+ static const int ports[] = {0x300, 0x280, 0x360, 0x320, 0x340, 0};
+ const int *port;
+ struct priv *p;
+ int err = 0;
+
+ if (!dev)
+ return ERR_PTR(-ENOMEM);
+
+ p = netdev_priv(dev);
+
+ if (unit >= 0) {
+ sprintf(dev->name, "eth%d", unit);
+ netdev_boot_setup_check(dev);
+ io = dev->base_addr;
+ irq = dev->irq;
+ memstart = dev->mem_start;
+ memend = dev->mem_end;
+ }
+
+ if (io > 0x1ff) { /* Check a single specified location. */
+ err = ni52_probe1(dev, io);
+ } else if (io > 0) { /* Don't probe at all. */
+ err = -ENXIO;
+ } else {
+ for (port = ports; *port && ni52_probe1(dev, *port) ; port++)
+ ;
+ if (*port)
+ goto got_it;
+#ifdef FULL_IO_PROBE
+ for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8)
+ ;
+ if (io < 0x400)
+ goto got_it;
+#endif
+ err = -ENODEV;
+ }
+ if (err)
+ goto out;
+got_it:
+ err = register_netdev(dev);
+ if (err)
+ goto out1;
+ return dev;
+out1:
+ iounmap(p->mapped);
+ release_region(dev->base_addr, NI52_TOTAL_SIZE);
+out:
+ free_netdev(dev);
+ return ERR_PTR(err);
+}
+
+static const struct net_device_ops ni52_netdev_ops = {
+ .ndo_open = ni52_open,
+ .ndo_stop = ni52_close,
+ .ndo_get_stats = ni52_get_stats,
+ .ndo_tx_timeout = ni52_timeout,
+ .ndo_start_xmit = ni52_send_packet,
+ .ndo_set_multicast_list = set_multicast_list,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+static int __init ni52_probe1(struct net_device *dev, int ioaddr)
+{
+ int i, size, retval;
+ struct priv *priv = netdev_priv(dev);
+
+ dev->base_addr = ioaddr;
+ dev->irq = irq;
+ dev->mem_start = memstart;
+ dev->mem_end = memend;
+
+ spin_lock_init(&priv->spinlock);
+
+ if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME))
+ return -EBUSY;
+
+ if (!(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) ||
+ !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) {
+ retval = -ENODEV;
+ goto out;
+ }
+
+ for (i = 0; i < ETH_ALEN; i++)
+ dev->dev_addr[i] = inb(dev->base_addr+i);
+
+ if (dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1 ||
+ dev->dev_addr[2] != NI52_ADDR2) {
+ retval = -ENODEV;
+ goto out;
+ }
+
+ printk(KERN_INFO "%s: NI5210 found at %#3lx, ",
+ dev->name, dev->base_addr);
+
+ /*
+ * check (or search) IO-Memory, 8K and 16K
+ */
+#ifdef MODULE
+ size = dev->mem_end - dev->mem_start;
+ if (size != 0x2000 && size != 0x4000) {
+ printk("\n");
+ printk(KERN_ERR "%s: Invalid memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n", dev->name, size);
+ retval = -ENODEV;
+ goto out;
+ }
+ if (!check586(dev, size)) {
+ printk(KERN_ERR "?memcheck, Can't find memory at 0x%lx with size %d!\n", dev->mem_start, size);
+ retval = -ENODEV;
+ goto out;
+ }
+#else
+ if (dev->mem_start != 0) {
+ /* no auto-mem-probe */
+ size = 0x4000; /* check for 16K mem */
+ if (!check586(dev, size)) {
+ size = 0x2000; /* check for 8K mem */
+ if (!check586(dev, size)) {
+ printk(KERN_ERR "?memprobe, Can't find memory at 0x%lx!\n", dev->mem_start);
+ retval = -ENODEV;
+ goto out;
+ }
+ }
+ } else {
+ static const unsigned long memaddrs[] = {
+ 0xc8000, 0xca000, 0xcc000, 0xce000, 0xd0000, 0xd2000,
+ 0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0
+ };
+ for (i = 0;; i++) {
+ if (!memaddrs[i]) {
+ printk(KERN_ERR "?memprobe, Can't find io-memory!\n");
+ retval = -ENODEV;
+ goto out;
+ }
+ dev->mem_start = memaddrs[i];
+ size = 0x2000; /* check for 8K mem */
+ if (check586(dev, size))
+ /* 8K-check */
+ break;
+ size = 0x4000; /* check for 16K mem */
+ if (check586(dev, size))
+ /* 16K-check */
+ break;
+ }
+ }
+ /* set mem_end showed by 'ifconfig' */
+ dev->mem_end = dev->mem_start + size;
+#endif
+
+ alloc586(dev);
+
+ /* set number of receive-buffs according to memsize */
+ if (size == 0x2000)
+ priv->num_recv_buffs = NUM_RECV_BUFFS_8;
+ else
+ priv->num_recv_buffs = NUM_RECV_BUFFS_16;
+
+ printk(KERN_DEBUG "Memaddr: 0x%lx, Memsize: %d, ",
+ dev->mem_start, size);
+
+ if (dev->irq < 2) {
+ unsigned long irq_mask;
+
+ irq_mask = probe_irq_on();
+ ni_reset586();
+ ni_attn586();
+
+ mdelay(20);
+ dev->irq = probe_irq_off(irq_mask);
+ if (!dev->irq) {
+ printk("?autoirq, Failed to detect IRQ line!\n");
+ retval = -EAGAIN;
+ iounmap(priv->mapped);
+ goto out;
+ }
+ printk("IRQ %d (autodetected).\n", dev->irq);
+ } else {
+ if (dev->irq == 2)
+ dev->irq = 9;
+ printk("IRQ %d (assigned and not checked!).\n", dev->irq);
+ }
+
+ dev->netdev_ops = &ni52_netdev_ops;
+ dev->watchdog_timeo = HZ/20;
+
+ return 0;
+out:
+ release_region(ioaddr, NI52_TOTAL_SIZE);
+ return retval;
+}
+
+/**********************************************
+ * init the chip (ni52-interrupt should be disabled?!)
+ * needs a correct 'allocated' memory
+ */
+
+static int init586(struct net_device *dev)
+{
+ void __iomem *ptr;
+ int i, result = 0;
+ struct priv *p = netdev_priv(dev);
+ struct configure_cmd_struct __iomem *cfg_cmd;
+ struct iasetup_cmd_struct __iomem *ias_cmd;
+ struct tdr_cmd_struct __iomem *tdr_cmd;
+ struct mcsetup_cmd_struct __iomem *mc_cmd;
+ struct netdev_hw_addr *ha;
+ int num_addrs = netdev_mc_count(dev);
+
+ ptr = p->scb + 1;
+
+ cfg_cmd = ptr; /* configure-command */
+ writew(0, &cfg_cmd->cmd_status);
+ writew(CMD_CONFIGURE | CMD_LAST, &cfg_cmd->cmd_cmd);
+ writew(0xFFFF, &cfg_cmd->cmd_link);
+
+ /* number of cfg bytes */
+ writeb(0x0a, &cfg_cmd->byte_cnt);
+ /* fifo-limit (8=tx:32/rx:64) */
+ writeb(fifo, &cfg_cmd->fifo);
+ /* hold or discard bad recv frames (bit 7) */
+ writeb(0x40, &cfg_cmd->sav_bf);
+ /* addr_len |!src_insert |pre-len |loopback */
+ writeb(0x2e, &cfg_cmd->adr_len);
+ writeb(0x00, &cfg_cmd->priority);
+ writeb(0x60, &cfg_cmd->ifs);
+ writeb(0x00, &cfg_cmd->time_low);
+ writeb(0xf2, &cfg_cmd->time_high);
+ writeb(0x00, &cfg_cmd->promisc);
+ if (dev->flags & IFF_ALLMULTI) {
+ int len = ((char __iomem *)p->iscp - (char __iomem *)ptr - 8) / 6;
+ if (num_addrs > len) {
+ printk(KERN_ERR "%s: switching to promisc. mode\n",
+ dev->name);
+ writeb(0x01, &cfg_cmd->promisc);
+ }
+ }
+ if (dev->flags & IFF_PROMISC)
+ writeb(0x01, &cfg_cmd->promisc);
+ writeb(0x00, &cfg_cmd->carr_coll);
+ writew(make16(cfg_cmd), &p->scb->cbl_offset);
+ writeb(0, &p->scb->cmd_ruc);
+
+ writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
+ ni_attn586();
+
+ wait_for_stat_compl(cfg_cmd);
+
+ if ((readw(&cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) !=
+ (STAT_COMPL|STAT_OK)) {
+ printk(KERN_ERR "%s: configure command failed: %x\n",
+ dev->name, readw(&cfg_cmd->cmd_status));
+ return 1;
+ }
+
+ /*
+ * individual address setup
+ */
+
+ ias_cmd = ptr;
+
+ writew(0, &ias_cmd->cmd_status);
+ writew(CMD_IASETUP | CMD_LAST, &ias_cmd->cmd_cmd);
+ writew(0xffff, &ias_cmd->cmd_link);
+
+ memcpy_toio(&ias_cmd->iaddr, (char *)dev->dev_addr, ETH_ALEN);
+
+ writew(make16(ias_cmd), &p->scb->cbl_offset);
+
+ writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
+ ni_attn586();
+
+ wait_for_stat_compl(ias_cmd);
+
+ if ((readw(&ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) !=
+ (STAT_OK|STAT_COMPL)) {
+ printk(KERN_ERR "%s (ni52): individual address setup command failed: %04x\n", dev->name, readw(&ias_cmd->cmd_status));
+ return 1;
+ }
+
+ /*
+ * TDR, wire check .. e.g. no resistor e.t.c
+ */
+
+ tdr_cmd = ptr;
+
+ writew(0, &tdr_cmd->cmd_status);
+ writew(CMD_TDR | CMD_LAST, &tdr_cmd->cmd_cmd);
+ writew(0xffff, &tdr_cmd->cmd_link);
+ writew(0, &tdr_cmd->status);
+
+ writew(make16(tdr_cmd), &p->scb->cbl_offset);
+ writeb(CUC_START, &p->scb->cmd_cuc); /* cmd.-unit start */
+ ni_attn586();
+
+ wait_for_stat_compl(tdr_cmd);
+
+ if (!(readw(&tdr_cmd->cmd_status) & STAT_COMPL))
+ printk(KERN_ERR "%s: Problems while running the TDR.\n",
+ dev->name);
+ else {
+ udelay(16);
+ result = readw(&tdr_cmd->status);
+ writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc);
+ ni_attn586(); /* ack the interrupts */
+
+ if (result & TDR_LNK_OK)
+ ;
+ else if (result & TDR_XCVR_PRB)
+ printk(KERN_ERR "%s: TDR: Transceiver problem. Check the cable(s)!\n",
+ dev->name);
+ else if (result & TDR_ET_OPN)
+ printk(KERN_ERR "%s: TDR: No correct termination %d clocks away.\n",
+ dev->name, result & TDR_TIMEMASK);
+ else if (result & TDR_ET_SRT) {
+ /* time == 0 -> strange :-) */
+ if (result & TDR_TIMEMASK)
+ printk(KERN_ERR "%s: TDR: Detected a short circuit %d clocks away.\n",
+ dev->name, result & TDR_TIMEMASK);
+ } else
+ printk(KERN_ERR "%s: TDR: Unknown status %04x\n",
+ dev->name, result);
+ }
+
+ /*
+ * Multicast setup
+ */
+ if (num_addrs && !(dev->flags & IFF_PROMISC)) {
+ mc_cmd = ptr;
+ writew(0, &mc_cmd->cmd_status);
+ writew(CMD_MCSETUP | CMD_LAST, &mc_cmd->cmd_cmd);
+ writew(0xffff, &mc_cmd->cmd_link);
+ writew(num_addrs * 6, &mc_cmd->mc_cnt);
+
+ i = 0;
+ netdev_for_each_mc_addr(ha, dev)
+ memcpy_toio(mc_cmd->mc_list[i++], ha->addr, 6);
+
+ writew(make16(mc_cmd), &p->scb->cbl_offset);
+ writeb(CUC_START, &p->scb->cmd_cuc);
+ ni_attn586();
+
+ wait_for_stat_compl(mc_cmd);
+
+ if ((readw(&mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK))
+ != (STAT_COMPL|STAT_OK))
+ printk(KERN_ERR "%s: Can't apply multicast-address-list.\n", dev->name);
+ }
+
+ /*
+ * alloc nop/xmit-cmds
+ */
+#if (NUM_XMIT_BUFFS == 1)
+ for (i = 0; i < 2; i++) {
+ p->nop_cmds[i] = ptr;
+ writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd);
+ writew(0, &p->nop_cmds[i]->cmd_status);
+ writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link);
+ ptr = ptr + sizeof(struct nop_cmd_struct);
+ }
+#else
+ for (i = 0; i < NUM_XMIT_BUFFS; i++) {
+ p->nop_cmds[i] = ptr;
+ writew(CMD_NOP, &p->nop_cmds[i]->cmd_cmd);
+ writew(0, &p->nop_cmds[i]->cmd_status);
+ writew(make16(p->nop_cmds[i]), &p->nop_cmds[i]->cmd_link);
+ ptr = ptr + sizeof(struct nop_cmd_struct);
+ }
+#endif
+
+ ptr = alloc_rfa(dev, ptr); /* init receive-frame-area */
+
+ /*
+ * alloc xmit-buffs / init xmit_cmds
+ */
+ for (i = 0; i < NUM_XMIT_BUFFS; i++) {
+ /* Transmit cmd/buff 0 */
+ p->xmit_cmds[i] = ptr;
+ ptr = ptr + sizeof(struct transmit_cmd_struct);
+ p->xmit_cbuffs[i] = ptr; /* char-buffs */
+ ptr = ptr + XMIT_BUFF_SIZE;
+ p->xmit_buffs[i] = ptr; /* TBD */
+ ptr = ptr + sizeof(struct tbd_struct);
+ if ((void __iomem *)ptr > (void __iomem *)p->iscp) {
+ printk(KERN_ERR "%s: not enough shared-mem for your configuration!\n",
+ dev->name);
+ return 1;
+ }
+ memset_io(p->xmit_cmds[i], 0,
+ sizeof(struct transmit_cmd_struct));
+ memset_io(p->xmit_buffs[i], 0,
+ sizeof(struct tbd_struct));
+ writew(make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]),
+ &p->xmit_cmds[i]->cmd_link);
+ writew(STAT_COMPL, &p->xmit_cmds[i]->cmd_status);
+ writew(CMD_XMIT|CMD_INT, &p->xmit_cmds[i]->cmd_cmd);
+ writew(make16(p->xmit_buffs[i]), &p->xmit_cmds[i]->tbd_offset);
+ writew(0xffff, &p->xmit_buffs[i]->next);
+ writel(make24(p->xmit_cbuffs[i]), &p->xmit_buffs[i]->buffer);
+ }
+
+ p->xmit_count = 0;
+ p->xmit_last = 0;
+#ifndef NO_NOPCOMMANDS
+ p->nop_point = 0;
+#endif
+
+ /*
+ * 'start transmitter'
+ */
+#ifndef NO_NOPCOMMANDS
+ writew(make16(p->nop_cmds[0]), &p->scb->cbl_offset);
+ writeb(CUC_START, &p->scb->cmd_cuc);
+ ni_attn586();
+ wait_for_scb_cmd(dev);
+#else
+ writew(make16(p->xmit_cmds[0]), &p->xmit_cmds[0]->cmd_link);
+ writew(CMD_XMIT | CMD_SUSPEND | CMD_INT, &p->xmit_cmds[0]->cmd_cmd);
+#endif
+
+ /*
+ * ack. interrupts
+ */
+ writeb(readb(&p->scb->cus) & STAT_MASK, &p->scb->cmd_cuc);
+ ni_attn586();
+ udelay(16);
+
+ ni_enaint();
+
+ return 0;
+}
+
+/******************************************************
+ * This is a helper routine for ni52_rnr_int() and init586().
+ * It sets up the Receive Frame Area (RFA).
+ */
+
+static void __iomem *alloc_rfa(struct net_device *dev, void __iomem *ptr)
+{
+ struct rfd_struct __iomem *rfd = ptr;
+ struct rbd_struct __iomem *rbd;
+ int i;
+ struct priv *p = netdev_priv(dev);
+
+ memset_io(rfd, 0,
+ sizeof(struct rfd_struct) * (p->num_recv_buffs + rfdadd));
+ p->rfd_first = rfd;
+
+ for (i = 0; i < (p->num_recv_buffs + rfdadd); i++) {
+ writew(make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd)),
+ &rfd[i].next);
+ writew(0xffff, &rfd[i].rbd_offset);
+ }
+ /* RU suspend */
+ writeb(RFD_SUSP, &rfd[p->num_recv_buffs-1+rfdadd].last);
+
+ ptr = rfd + (p->num_recv_buffs + rfdadd);
+
+ rbd = ptr;
+ ptr = rbd + p->num_recv_buffs;
+
+ /* clr descriptors */
+ memset_io(rbd, 0, sizeof(struct rbd_struct) * (p->num_recv_buffs));
+
+ for (i = 0; i < p->num_recv_buffs; i++) {
+ writew(make16(rbd + (i+1) % p->num_recv_buffs), &rbd[i].next);
+ writew(RECV_BUFF_SIZE, &rbd[i].size);
+ writel(make24(ptr), &rbd[i].buffer);
+ ptr = ptr + RECV_BUFF_SIZE;
+ }
+ p->rfd_top = p->rfd_first;
+ p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
+
+ writew(make16(p->rfd_first), &p->scb->rfa_offset);
+ writew(make16(rbd), &p->rfd_first->rbd_offset);
+
+ return ptr;
+}
+
+
+/**************************************************
+ * Interrupt Handler ...
+ */
+
+static irqreturn_t ni52_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ unsigned int stat;
+ int cnt = 0;
+ struct priv *p;
+
+ p = netdev_priv(dev);
+
+ if (debuglevel > 1)
+ printk("I");
+
+ spin_lock(&p->spinlock);
+
+ wait_for_scb_cmd(dev); /* wait for last command */
+
+ while ((stat = readb(&p->scb->cus) & STAT_MASK)) {
+ writeb(stat, &p->scb->cmd_cuc);
+ ni_attn586();
+
+ if (stat & STAT_FR) /* received a frame */
+ ni52_rcv_int(dev);
+
+ if (stat & STAT_RNR) { /* RU went 'not ready' */
+ printk("(R)");
+ if (readb(&p->scb->rus) & RU_SUSPEND) {
+ /* special case: RU_SUSPEND */
+ wait_for_scb_cmd(dev);
+ writeb(RUC_RESUME, &p->scb->cmd_ruc);
+ ni_attn586();
+ wait_for_scb_cmd_ruc(dev);
+ } else {
+ printk(KERN_ERR "%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",
+ dev->name, stat, readb(&p->scb->rus));
+ ni52_rnr_int(dev);
+ }
+ }
+
+ /* Command with I-bit set complete */
+ if (stat & STAT_CX)
+ ni52_xmt_int(dev);
+
+#ifndef NO_NOPCOMMANDS
+ if (stat & STAT_CNA) { /* CU went 'not ready' */
+ if (netif_running(dev))
+ printk(KERN_ERR "%s: oops! CU has left active state. stat: %04x/%02x.\n",
+ dev->name, stat, readb(&p->scb->cus));
+ }
+#endif
+
+ if (debuglevel > 1)
+ printk("%d", cnt++);
+
+ /* Wait for ack. (ni52_xmt_int can be faster than ack!!) */
+ wait_for_scb_cmd(dev);
+ if (readb(&p->scb->cmd_cuc)) { /* timed out? */
+ printk(KERN_ERR "%s: Acknowledge timed out.\n",
+ dev->name);
+ ni_disint();
+ break;
+ }
+ }
+ spin_unlock(&p->spinlock);
+
+ if (debuglevel > 1)
+ printk("i");
+ return IRQ_HANDLED;
+}
+
+/*******************************************************
+ * receive-interrupt
+ */
+
+static void ni52_rcv_int(struct net_device *dev)
+{
+ int status, cnt = 0;
+ unsigned short totlen;
+ struct sk_buff *skb;
+ struct rbd_struct __iomem *rbd;
+ struct priv *p = netdev_priv(dev);
+
+ if (debuglevel > 0)
+ printk("R");
+
+ for (; (status = readb(&p->rfd_top->stat_high)) & RFD_COMPL;) {
+ rbd = make32(readw(&p->rfd_top->rbd_offset));
+ if (status & RFD_OK) { /* frame received without error? */
+ totlen = readw(&rbd->status);
+ if (totlen & RBD_LAST) {
+ /* the first and the last buffer? */
+ totlen &= RBD_MASK; /* length of this frame */
+ writew(0x00, &rbd->status);
+ skb = (struct sk_buff *)dev_alloc_skb(totlen+2);
+ if (skb != NULL) {
+ skb_reserve(skb, 2);
+ skb_put(skb, totlen);
+ memcpy_fromio(skb->data, p->base + readl(&rbd->buffer), totlen);
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += totlen;
+ } else
+ dev->stats.rx_dropped++;
+ } else {
+ int rstat;
+ /* free all RBD's until RBD_LAST is set */
+ totlen = 0;
+ while (!((rstat = readw(&rbd->status)) & RBD_LAST)) {
+ totlen += rstat & RBD_MASK;
+ if (!rstat) {
+ printk(KERN_ERR "%s: Whoops .. no end mark in RBD list\n", dev->name);
+ break;
+ }
+ writew(0, &rbd->status);
+ rbd = make32(readw(&rbd->next));
+ }
+ totlen += rstat & RBD_MASK;
+ writew(0, &rbd->status);
+ printk(KERN_ERR "%s: received oversized frame! length: %d\n",
+ dev->name, totlen);
+ dev->stats.rx_dropped++;
+ }
+ } else {/* frame !(ok), only with 'save-bad-frames' */
+ printk(KERN_ERR "%s: oops! rfd-error-status: %04x\n",
+ dev->name, status);
+ dev->stats.rx_errors++;
+ }
+ writeb(0, &p->rfd_top->stat_high);
+ writeb(RFD_SUSP, &p->rfd_top->last); /* maybe exchange by RFD_LAST */
+ writew(0xffff, &p->rfd_top->rbd_offset);
+ writeb(0, &p->rfd_last->last); /* delete RFD_SUSP */
+ p->rfd_last = p->rfd_top;
+ p->rfd_top = make32(readw(&p->rfd_top->next)); /* step to next RFD */
+ writew(make16(p->rfd_top), &p->scb->rfa_offset);
+
+ if (debuglevel > 0)
+ printk("%d", cnt++);
+ }
+
+ if (automatic_resume) {
+ wait_for_scb_cmd(dev);
+ writeb(RUC_RESUME, &p->scb->cmd_ruc);
+ ni_attn586();
+ wait_for_scb_cmd_ruc(dev);
+ }
+
+#ifdef WAIT_4_BUSY
+ {
+ int i;
+ for (i = 0; i < 1024; i++) {
+ if (p->rfd_top->status)
+ break;
+ udelay(16);
+ if (i == 1023)
+ printk(KERN_ERR "%s: RU hasn't fetched next RFD (not busy/complete)\n", dev->name);
+ }
+ }
+#endif
+ if (debuglevel > 0)
+ printk("r");
+}
+
+/**********************************************************
+ * handle 'Receiver went not ready'.
+ */
+
+static void ni52_rnr_int(struct net_device *dev)
+{
+ struct priv *p = netdev_priv(dev);
+
+ dev->stats.rx_errors++;
+
+ wait_for_scb_cmd(dev); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
+ writeb(RUC_ABORT, &p->scb->cmd_ruc); /* usually the RU is in the 'no resource'-state .. abort it now. */
+ ni_attn586();
+ wait_for_scb_cmd_ruc(dev); /* wait for accept cmd. */
+
+ alloc_rfa(dev, p->rfd_first);
+ /* maybe add a check here, before restarting the RU */
+ startrecv586(dev); /* restart RU */
+
+ printk(KERN_ERR "%s: Receive-Unit restarted. Status: %04x\n",
+ dev->name, readb(&p->scb->rus));
+
+}
+
+/**********************************************************
+ * handle xmit - interrupt
+ */
+
+static void ni52_xmt_int(struct net_device *dev)
+{
+ int status;
+ struct priv *p = netdev_priv(dev);
+
+ if (debuglevel > 0)
+ printk("X");
+
+ status = readw(&p->xmit_cmds[p->xmit_last]->cmd_status);
+ if (!(status & STAT_COMPL))
+ printk(KERN_ERR "%s: strange .. xmit-int without a 'COMPLETE'\n", dev->name);
+
+ if (status & STAT_OK) {
+ dev->stats.tx_packets++;
+ dev->stats.collisions += (status & TCMD_MAXCOLLMASK);
+ } else {
+ dev->stats.tx_errors++;
+ if (status & TCMD_LATECOLL) {
+ printk(KERN_ERR "%s: late collision detected.\n",
+ dev->name);
+ dev->stats.collisions++;
+ } else if (status & TCMD_NOCARRIER) {
+ dev->stats.tx_carrier_errors++;
+ printk(KERN_ERR "%s: no carrier detected.\n",
+ dev->name);
+ } else if (status & TCMD_LOSTCTS)
+ printk(KERN_ERR "%s: loss of CTS detected.\n",
+ dev->name);
+ else if (status & TCMD_UNDERRUN) {
+ dev->stats.tx_fifo_errors++;
+ printk(KERN_ERR "%s: DMA underrun detected.\n",
+ dev->name);
+ } else if (status & TCMD_MAXCOLL) {
+ printk(KERN_ERR "%s: Max. collisions exceeded.\n",
+ dev->name);
+ dev->stats.collisions += 16;
+ }
+ }
+#if (NUM_XMIT_BUFFS > 1)
+ if ((++p->xmit_last) == NUM_XMIT_BUFFS)
+ p->xmit_last = 0;
+#endif
+ netif_wake_queue(dev);
+}
+
+/***********************************************************
+ * (re)start the receiver
+ */
+
+static void startrecv586(struct net_device *dev)
+{
+ struct priv *p = netdev_priv(dev);
+
+ wait_for_scb_cmd(dev);
+ wait_for_scb_cmd_ruc(dev);
+ writew(make16(p->rfd_first), &p->scb->rfa_offset);
+ writeb(RUC_START, &p->scb->cmd_ruc);
+ ni_attn586(); /* start cmd. */
+ wait_for_scb_cmd_ruc(dev);
+ /* wait for accept cmd. (no timeout!!) */
+}
+
+static void ni52_timeout(struct net_device *dev)
+{
+ struct priv *p = netdev_priv(dev);
+#ifndef NO_NOPCOMMANDS
+ if (readb(&p->scb->cus) & CU_ACTIVE) { /* COMMAND-UNIT active? */
+ netif_wake_queue(dev);
+#ifdef DEBUG
+ printk(KERN_ERR "%s: strange ... timeout with CU active?!?\n",
+ dev->name);
+ printk(KERN_ERR "%s: X0: %04x N0: %04x N1: %04x %d\n",
+ dev->name, (int)p->xmit_cmds[0]->cmd_status,
+ readw(&p->nop_cmds[0]->cmd_status),
+ readw(&p->nop_cmds[1]->cmd_status),
+ p->nop_point);
+#endif
+ writeb(CUC_ABORT, &p->scb->cmd_cuc);
+ ni_attn586();
+ wait_for_scb_cmd(dev);
+ writew(make16(p->nop_cmds[p->nop_point]), &p->scb->cbl_offset);
+ writeb(CUC_START, &p->scb->cmd_cuc);
+ ni_attn586();
+ wait_for_scb_cmd(dev);
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ return 0;
+ }
+#endif
+ {
+#ifdef DEBUG
+ printk(KERN_ERR "%s: xmitter timed out, try to restart! stat: %02x\n",
+ dev->name, readb(&p->scb->cus));
+ printk(KERN_ERR "%s: command-stats: %04x %04x\n",
+ dev->name,
+ readw(&p->xmit_cmds[0]->cmd_status),
+ readw(&p->xmit_cmds[1]->cmd_status));
+ printk(KERN_ERR "%s: check, whether you set the right interrupt number!\n",
+ dev->name);
+#endif
+ ni52_close(dev);
+ ni52_open(dev);
+ }
+ dev->trans_start = jiffies; /* prevent tx timeout */
+}
+
+/******************************************************
+ * send frame
+ */
+
+static netdev_tx_t ni52_send_packet(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ int len, i;
+#ifndef NO_NOPCOMMANDS
+ int next_nop;
+#endif
+ struct priv *p = netdev_priv(dev);
+
+ if (skb->len > XMIT_BUFF_SIZE) {
+ printk(KERN_ERR "%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n", dev->name, XMIT_BUFF_SIZE, skb->len);
+ return NETDEV_TX_OK;
+ }
+
+ netif_stop_queue(dev);
+
+ memcpy_toio(p->xmit_cbuffs[p->xmit_count], skb->data, skb->len);
+ len = skb->len;
+ if (len < ETH_ZLEN) {
+ len = ETH_ZLEN;
+ memset_io(p->xmit_cbuffs[p->xmit_count]+skb->len, 0,
+ len - skb->len);
+ }
+
+#if (NUM_XMIT_BUFFS == 1)
+# ifdef NO_NOPCOMMANDS
+
+#ifdef DEBUG
+ if (readb(&p->scb->cus) & CU_ACTIVE) {
+ printk(KERN_ERR "%s: Hmmm .. CU is still running and we wanna send a new packet.\n", dev->name);
+ printk(KERN_ERR "%s: stat: %04x %04x\n",
+ dev->name, readb(&p->scb->cus),
+ readw(&p->xmit_cmds[0]->cmd_status));
+ }
+#endif
+ writew(TBD_LAST | len, &p->xmit_buffs[0]->size);
+ for (i = 0; i < 16; i++) {
+ writew(0, &p->xmit_cmds[0]->cmd_status);
+ wait_for_scb_cmd(dev);
+ if ((readb(&p->scb->cus) & CU_STATUS) == CU_SUSPEND)
+ writeb(CUC_RESUME, &p->scb->cmd_cuc);
+ else {
+ writew(make16(p->xmit_cmds[0]), &p->scb->cbl_offset);
+ writeb(CUC_START, &p->scb->cmd_cuc);
+ }
+ ni_attn586();
+ if (!i)
+ dev_kfree_skb(skb);
+ wait_for_scb_cmd(dev);
+ /* test it, because CU sometimes doesn't start immediately */
+ if (readb(&p->scb->cus) & CU_ACTIVE)
+ break;
+ if (readw(&p->xmit_cmds[0]->cmd_status))
+ break;
+ if (i == 15)
+ printk(KERN_WARNING "%s: Can't start transmit-command.\n", dev->name);
+ }
+# else
+ next_nop = (p->nop_point + 1) & 0x1;
+ writew(TBD_LAST | len, &p->xmit_buffs[0]->size);
+ writew(make16(p->nop_cmds[next_nop]), &p->xmit_cmds[0]->cmd_link);
+ writew(make16(p->nop_cmds[next_nop]),
+ &p->nop_cmds[next_nop]->cmd_link);
+ writew(0, &p->xmit_cmds[0]->cmd_status);
+ writew(0, &p->nop_cmds[next_nop]->cmd_status);
+
+ writew(make16(p->xmit_cmds[0]), &p->nop_cmds[p->nop_point]->cmd_link);
+ p->nop_point = next_nop;
+ dev_kfree_skb(skb);
+# endif
+#else
+ writew(TBD_LAST | len, &p->xmit_buffs[p->xmit_count]->size);
+ next_nop = p->xmit_count + 1
+ if (next_nop == NUM_XMIT_BUFFS)
+ next_nop = 0;
+ writew(0, &p->xmit_cmds[p->xmit_count]->cmd_status);
+ /* linkpointer of xmit-command already points to next nop cmd */
+ writew(make16(p->nop_cmds[next_nop]),
+ &p->nop_cmds[next_nop]->cmd_link);
+ writew(0, &p->nop_cmds[next_nop]->cmd_status);
+ writew(make16(p->xmit_cmds[p->xmit_count]),
+ &p->nop_cmds[p->xmit_count]->cmd_link);
+ p->xmit_count = next_nop;
+ {
+ unsigned long flags;
+ spin_lock_irqsave(&p->spinlock);
+ if (p->xmit_count != p->xmit_last)
+ netif_wake_queue(dev);
+ spin_unlock_irqrestore(&p->spinlock);
+ }
+ dev_kfree_skb(skb);
+#endif
+ return NETDEV_TX_OK;
+}
+
+/*******************************************
+ * Someone wanna have the statistics
+ */
+
+static struct net_device_stats *ni52_get_stats(struct net_device *dev)
+{
+ struct priv *p = netdev_priv(dev);
+ unsigned short crc, aln, rsc, ovrn;
+
+ /* Get error-statistics from the ni82586 */
+ crc = readw(&p->scb->crc_errs);
+ writew(0, &p->scb->crc_errs);
+ aln = readw(&p->scb->aln_errs);
+ writew(0, &p->scb->aln_errs);
+ rsc = readw(&p->scb->rsc_errs);
+ writew(0, &p->scb->rsc_errs);
+ ovrn = readw(&p->scb->ovrn_errs);
+ writew(0, &p->scb->ovrn_errs);
+
+ dev->stats.rx_crc_errors += crc;
+ dev->stats.rx_fifo_errors += ovrn;
+ dev->stats.rx_frame_errors += aln;
+ dev->stats.rx_dropped += rsc;
+
+ return &dev->stats;
+}
+
+/********************************************************
+ * Set MC list ..
+ */
+
+static void set_multicast_list(struct net_device *dev)
+{
+ netif_stop_queue(dev);
+ ni_disint();
+ alloc586(dev);
+ init586(dev);
+ startrecv586(dev);
+ ni_enaint();
+ netif_wake_queue(dev);
+}
+
+#ifdef MODULE
+static struct net_device *dev_ni52;
+
+module_param(io, int, 0);
+module_param(irq, int, 0);
+module_param(memstart, long, 0);
+module_param(memend, long, 0);
+MODULE_PARM_DESC(io, "NI5210 I/O base address,required");
+MODULE_PARM_DESC(irq, "NI5210 IRQ number,required");
+MODULE_PARM_DESC(memstart, "NI5210 memory base address,required");
+MODULE_PARM_DESC(memend, "NI5210 memory end address,required");
+
+int __init init_module(void)
+{
+ if (io <= 0x0 || !memend || !memstart || irq < 2) {
+ printk(KERN_ERR "ni52: Autoprobing not allowed for modules.\n");
+ printk(KERN_ERR "ni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n");
+ return -ENODEV;
+ }
+ dev_ni52 = ni52_probe(-1);
+ if (IS_ERR(dev_ni52))
+ return PTR_ERR(dev_ni52);
+ return 0;
+}
+
+void __exit cleanup_module(void)
+{
+ struct priv *p = netdev_priv(dev_ni52);
+ unregister_netdev(dev_ni52);
+ iounmap(p->mapped);
+ release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE);
+ free_netdev(dev_ni52);
+}
+#endif /* MODULE */
+
+MODULE_LICENSE("GPL");