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-rw-r--r--drivers/net/ethernet/seeq/seeq8005.c752
1 files changed, 752 insertions, 0 deletions
diff --git a/drivers/net/ethernet/seeq/seeq8005.c b/drivers/net/ethernet/seeq/seeq8005.c
new file mode 100644
index 000000000000..d2fce98f557f
--- /dev/null
+++ b/drivers/net/ethernet/seeq/seeq8005.c
@@ -0,0 +1,752 @@
+/* seeq8005.c: A network driver for linux. */
+/*
+ Based on skeleton.c,
+ Written 1993-94 by Donald Becker.
+ See the skeleton.c file for further copyright information.
+
+ This software may be used and distributed according to the terms
+ of the GNU General Public License, incorporated herein by reference.
+
+ The author may be reached as hamish@zot.apana.org.au
+
+ This file is a network device driver for the SEEQ 8005 chipset and
+ the Linux operating system.
+
+*/
+
+static const char version[] =
+ "seeq8005.c:v1.00 8/07/95 Hamish Coleman (hamish@zot.apana.org.au)\n";
+
+/*
+ Sources:
+ SEEQ 8005 databook
+
+ Version history:
+ 1.00 Public release. cosmetic changes (no warnings now)
+ 0.68 Turning per- packet,interrupt debug messages off - testing for release.
+ 0.67 timing problems/bad buffer reads seem to be fixed now
+ 0.63 *!@$ protocol=eth_type_trans -- now packets flow
+ 0.56 Send working
+ 0.48 Receive working
+*/
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/bitops.h>
+#include <linux/jiffies.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include "seeq8005.h"
+
+/* First, a few definitions that the brave might change. */
+/* A zero-terminated list of I/O addresses to be probed. */
+static unsigned int seeq8005_portlist[] __initdata =
+ { 0x300, 0x320, 0x340, 0x360, 0};
+
+/* use 0 for production, 1 for verification, >2 for debug */
+#ifndef NET_DEBUG
+#define NET_DEBUG 1
+#endif
+static unsigned int net_debug = NET_DEBUG;
+
+/* Information that need to be kept for each board. */
+struct net_local {
+ unsigned short receive_ptr; /* What address in packet memory do we expect a recv_pkt_header? */
+ long open_time; /* Useless example local info. */
+};
+
+/* The station (ethernet) address prefix, used for IDing the board. */
+#define SA_ADDR0 0x00
+#define SA_ADDR1 0x80
+#define SA_ADDR2 0x4b
+
+/* Index to functions, as function prototypes. */
+
+static int seeq8005_probe1(struct net_device *dev, int ioaddr);
+static int seeq8005_open(struct net_device *dev);
+static void seeq8005_timeout(struct net_device *dev);
+static netdev_tx_t seeq8005_send_packet(struct sk_buff *skb,
+ struct net_device *dev);
+static irqreturn_t seeq8005_interrupt(int irq, void *dev_id);
+static void seeq8005_rx(struct net_device *dev);
+static int seeq8005_close(struct net_device *dev);
+static void set_multicast_list(struct net_device *dev);
+
+/* Example routines you must write ;->. */
+#define tx_done(dev) (inw(SEEQ_STATUS) & SEEQSTAT_TX_ON)
+static void hardware_send_packet(struct net_device *dev, char *buf, int length);
+extern void seeq8005_init(struct net_device *dev, int startp);
+static inline void wait_for_buffer(struct net_device *dev);
+
+
+/* Check for a network adaptor of this type, and return '0' iff one exists.
+ If dev->base_addr == 0, probe all likely locations.
+ If dev->base_addr == 1, always return failure.
+ */
+
+static int io = 0x320;
+static int irq = 10;
+
+struct net_device * __init seeq8005_probe(int unit)
+{
+ struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
+ unsigned *port;
+ int err = 0;
+
+ if (!dev)
+ return ERR_PTR(-ENODEV);
+
+ if (unit >= 0) {
+ sprintf(dev->name, "eth%d", unit);
+ netdev_boot_setup_check(dev);
+ io = dev->base_addr;
+ irq = dev->irq;
+ }
+
+ if (io > 0x1ff) { /* Check a single specified location. */
+ err = seeq8005_probe1(dev, io);
+ } else if (io != 0) { /* Don't probe at all. */
+ err = -ENXIO;
+ } else {
+ for (port = seeq8005_portlist; *port; port++) {
+ if (seeq8005_probe1(dev, *port) == 0)
+ break;
+ }
+ if (!*port)
+ err = -ENODEV;
+ }
+ if (err)
+ goto out;
+ err = register_netdev(dev);
+ if (err)
+ goto out1;
+ return dev;
+out1:
+ release_region(dev->base_addr, SEEQ8005_IO_EXTENT);
+out:
+ free_netdev(dev);
+ return ERR_PTR(err);
+}
+
+static const struct net_device_ops seeq8005_netdev_ops = {
+ .ndo_open = seeq8005_open,
+ .ndo_stop = seeq8005_close,
+ .ndo_start_xmit = seeq8005_send_packet,
+ .ndo_tx_timeout = seeq8005_timeout,
+ .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,
+};
+
+/* This is the real probe routine. Linux has a history of friendly device
+ probes on the ISA bus. A good device probes avoids doing writes, and
+ verifies that the correct device exists and functions. */
+
+static int __init seeq8005_probe1(struct net_device *dev, int ioaddr)
+{
+ static unsigned version_printed;
+ int i,j;
+ unsigned char SA_prom[32];
+ int old_cfg1;
+ int old_cfg2;
+ int old_stat;
+ int old_dmaar;
+ int old_rear;
+ int retval;
+
+ if (!request_region(ioaddr, SEEQ8005_IO_EXTENT, "seeq8005"))
+ return -ENODEV;
+
+ if (net_debug>1)
+ printk("seeq8005: probing at 0x%x\n",ioaddr);
+
+ old_stat = inw(SEEQ_STATUS); /* read status register */
+ if (old_stat == 0xffff) {
+ retval = -ENODEV;
+ goto out; /* assume that 0xffff == no device */
+ }
+ if ( (old_stat & 0x1800) != 0x1800 ) { /* assume that unused bits are 1, as my manual says */
+ if (net_debug>1) {
+ printk("seeq8005: reserved stat bits != 0x1800\n");
+ printk(" == 0x%04x\n",old_stat);
+ }
+ retval = -ENODEV;
+ goto out;
+ }
+
+ old_rear = inw(SEEQ_REA);
+ if (old_rear == 0xffff) {
+ outw(0,SEEQ_REA);
+ if (inw(SEEQ_REA) == 0xffff) { /* assume that 0xffff == no device */
+ retval = -ENODEV;
+ goto out;
+ }
+ } else if ((old_rear & 0xff00) != 0xff00) { /* assume that unused bits are 1 */
+ if (net_debug>1) {
+ printk("seeq8005: unused rear bits != 0xff00\n");
+ printk(" == 0x%04x\n",old_rear);
+ }
+ retval = -ENODEV;
+ goto out;
+ }
+
+ old_cfg2 = inw(SEEQ_CFG2); /* read CFG2 register */
+ old_cfg1 = inw(SEEQ_CFG1);
+ old_dmaar = inw(SEEQ_DMAAR);
+
+ if (net_debug>4) {
+ printk("seeq8005: stat = 0x%04x\n",old_stat);
+ printk("seeq8005: cfg1 = 0x%04x\n",old_cfg1);
+ printk("seeq8005: cfg2 = 0x%04x\n",old_cfg2);
+ printk("seeq8005: raer = 0x%04x\n",old_rear);
+ printk("seeq8005: dmaar= 0x%04x\n",old_dmaar);
+ }
+
+ outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD); /* setup for reading PROM */
+ outw( 0, SEEQ_DMAAR); /* set starting PROM address */
+ outw( SEEQCFG1_BUFFER_PROM, SEEQ_CFG1); /* set buffer to look at PROM */
+
+
+ j=0;
+ for(i=0; i <32; i++) {
+ j+= SA_prom[i] = inw(SEEQ_BUFFER) & 0xff;
+ }
+
+#if 0
+ /* untested because I only have the one card */
+ if ( (j&0xff) != 0 ) { /* checksum appears to be 8bit = 0 */
+ if (net_debug>1) { /* check this before deciding that we have a card */
+ printk("seeq8005: prom sum error\n");
+ }
+ outw( old_stat, SEEQ_STATUS);
+ outw( old_dmaar, SEEQ_DMAAR);
+ outw( old_cfg1, SEEQ_CFG1);
+ retval = -ENODEV;
+ goto out;
+ }
+#endif
+
+ outw( SEEQCFG2_RESET, SEEQ_CFG2); /* reset the card */
+ udelay(5);
+ outw( SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+
+ if (net_debug) {
+ printk("seeq8005: prom sum = 0x%08x\n",j);
+ for(j=0; j<32; j+=16) {
+ printk("seeq8005: prom %02x: ",j);
+ for(i=0;i<16;i++) {
+ printk("%02x ",SA_prom[j|i]);
+ }
+ printk(" ");
+ for(i=0;i<16;i++) {
+ if ((SA_prom[j|i]>31)&&(SA_prom[j|i]<127)) {
+ printk("%c", SA_prom[j|i]);
+ } else {
+ printk(" ");
+ }
+ }
+ printk("\n");
+ }
+ }
+
+#if 0
+ /*
+ * testing the packet buffer memory doesn't work yet
+ * but all other buffer accesses do
+ * - fixing is not a priority
+ */
+ if (net_debug>1) { /* test packet buffer memory */
+ printk("seeq8005: testing packet buffer ... ");
+ outw( SEEQCFG1_BUFFER_BUFFER, SEEQ_CFG1);
+ outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+ outw( 0 , SEEQ_DMAAR);
+ for(i=0;i<32768;i++) {
+ outw(0x5a5a, SEEQ_BUFFER);
+ }
+ j=jiffies+HZ;
+ while ( ((inw(SEEQ_STATUS) & SEEQSTAT_FIFO_EMPTY) != SEEQSTAT_FIFO_EMPTY) && time_before(jiffies, j) )
+ mb();
+ outw( 0 , SEEQ_DMAAR);
+ while ( ((inw(SEEQ_STATUS) & SEEQSTAT_WINDOW_INT) != SEEQSTAT_WINDOW_INT) && time_before(jiffies, j+HZ))
+ mb();
+ if ( (inw(SEEQ_STATUS) & SEEQSTAT_WINDOW_INT) == SEEQSTAT_WINDOW_INT)
+ outw( SEEQCMD_WINDOW_INT_ACK | (inw(SEEQ_STATUS)& SEEQCMD_INT_MASK), SEEQ_CMD);
+ outw( SEEQCMD_FIFO_READ | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+ j=0;
+ for(i=0;i<32768;i++) {
+ if (inw(SEEQ_BUFFER) != 0x5a5a)
+ j++;
+ }
+ if (j) {
+ printk("%i\n",j);
+ } else {
+ printk("ok.\n");
+ }
+ }
+#endif
+
+ if (net_debug && version_printed++ == 0)
+ printk(version);
+
+ printk("%s: %s found at %#3x, ", dev->name, "seeq8005", ioaddr);
+
+ /* Fill in the 'dev' fields. */
+ dev->base_addr = ioaddr;
+ dev->irq = irq;
+
+ /* Retrieve and print the ethernet address. */
+ for (i = 0; i < 6; i++)
+ dev->dev_addr[i] = SA_prom[i+6];
+ printk("%pM", dev->dev_addr);
+
+ if (dev->irq == 0xff)
+ ; /* Do nothing: a user-level program will set it. */
+ else if (dev->irq < 2) { /* "Auto-IRQ" */
+ unsigned long cookie = probe_irq_on();
+
+ outw( SEEQCMD_RX_INT_EN | SEEQCMD_SET_RX_ON | SEEQCMD_SET_RX_OFF, SEEQ_CMD );
+
+ dev->irq = probe_irq_off(cookie);
+
+ if (net_debug >= 2)
+ printk(" autoirq is %d\n", dev->irq);
+ } else if (dev->irq == 2)
+ /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
+ * or don't know which one to set.
+ */
+ dev->irq = 9;
+
+#if 0
+ {
+ int irqval = request_irq(dev->irq, seeq8005_interrupt, 0, "seeq8005", dev);
+ if (irqval) {
+ printk ("%s: unable to get IRQ %d (irqval=%d).\n", dev->name,
+ dev->irq, irqval);
+ retval = -EAGAIN;
+ goto out;
+ }
+ }
+#endif
+ dev->netdev_ops = &seeq8005_netdev_ops;
+ dev->watchdog_timeo = HZ/20;
+ dev->flags &= ~IFF_MULTICAST;
+
+ return 0;
+out:
+ release_region(ioaddr, SEEQ8005_IO_EXTENT);
+ return retval;
+}
+
+
+/* Open/initialize the board. This is called (in the current kernel)
+ sometime after booting when the 'ifconfig' program is run.
+
+ This routine should set everything up anew at each open, even
+ registers that "should" only need to be set once at boot, so that
+ there is non-reboot way to recover if something goes wrong.
+ */
+static int seeq8005_open(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+
+ {
+ int irqval = request_irq(dev->irq, seeq8005_interrupt, 0, "seeq8005", dev);
+ if (irqval) {
+ printk ("%s: unable to get IRQ %d (irqval=%d).\n", dev->name,
+ dev->irq, irqval);
+ return -EAGAIN;
+ }
+ }
+
+ /* Reset the hardware here. Don't forget to set the station address. */
+ seeq8005_init(dev, 1);
+
+ lp->open_time = jiffies;
+
+ netif_start_queue(dev);
+ return 0;
+}
+
+static void seeq8005_timeout(struct net_device *dev)
+{
+ int ioaddr = dev->base_addr;
+ printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name,
+ tx_done(dev) ? "IRQ conflict" : "network cable problem");
+ /* Try to restart the adaptor. */
+ seeq8005_init(dev, 1);
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ netif_wake_queue(dev);
+}
+
+static netdev_tx_t seeq8005_send_packet(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ short length = skb->len;
+ unsigned char *buf;
+
+ if (length < ETH_ZLEN) {
+ if (skb_padto(skb, ETH_ZLEN))
+ return NETDEV_TX_OK;
+ length = ETH_ZLEN;
+ }
+ buf = skb->data;
+
+ /* Block a timer-based transmit from overlapping */
+ netif_stop_queue(dev);
+
+ hardware_send_packet(dev, buf, length);
+ dev->stats.tx_bytes += length;
+ dev_kfree_skb (skb);
+ /* You might need to clean up and record Tx statistics here. */
+
+ return NETDEV_TX_OK;
+}
+
+/*
+ * wait_for_buffer
+ *
+ * This routine waits for the SEEQ chip to assert that the FIFO is ready
+ * by checking for a window interrupt, and then clearing it. This has to
+ * occur in the interrupt handler!
+ */
+inline void wait_for_buffer(struct net_device * dev)
+{
+ int ioaddr = dev->base_addr;
+ unsigned long tmp;
+ int status;
+
+ tmp = jiffies + HZ;
+ while ( ( ((status=inw(SEEQ_STATUS)) & SEEQSTAT_WINDOW_INT) != SEEQSTAT_WINDOW_INT) && time_before(jiffies, tmp))
+ cpu_relax();
+
+ if ( (status & SEEQSTAT_WINDOW_INT) == SEEQSTAT_WINDOW_INT)
+ outw( SEEQCMD_WINDOW_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+}
+
+/* The typical workload of the driver:
+ Handle the network interface interrupts. */
+static irqreturn_t seeq8005_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct net_local *lp;
+ int ioaddr, status, boguscount = 0;
+ int handled = 0;
+
+ ioaddr = dev->base_addr;
+ lp = netdev_priv(dev);
+
+ status = inw(SEEQ_STATUS);
+ do {
+ if (net_debug >2) {
+ printk("%s: int, status=0x%04x\n",dev->name,status);
+ }
+
+ if (status & SEEQSTAT_WINDOW_INT) {
+ handled = 1;
+ outw( SEEQCMD_WINDOW_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+ if (net_debug) {
+ printk("%s: window int!\n",dev->name);
+ }
+ }
+ if (status & SEEQSTAT_TX_INT) {
+ handled = 1;
+ outw( SEEQCMD_TX_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+ dev->stats.tx_packets++;
+ netif_wake_queue(dev); /* Inform upper layers. */
+ }
+ if (status & SEEQSTAT_RX_INT) {
+ handled = 1;
+ /* Got a packet(s). */
+ seeq8005_rx(dev);
+ }
+ status = inw(SEEQ_STATUS);
+ } while ( (++boguscount < 10) && (status & SEEQSTAT_ANY_INT)) ;
+
+ if(net_debug>2) {
+ printk("%s: eoi\n",dev->name);
+ }
+ return IRQ_RETVAL(handled);
+}
+
+/* We have a good packet(s), get it/them out of the buffers. */
+static void seeq8005_rx(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int boguscount = 10;
+ int pkt_hdr;
+ int ioaddr = dev->base_addr;
+
+ do {
+ int next_packet;
+ int pkt_len;
+ int i;
+ int status;
+
+ status = inw(SEEQ_STATUS);
+ outw( lp->receive_ptr, SEEQ_DMAAR);
+ outw(SEEQCMD_FIFO_READ | SEEQCMD_RX_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+ wait_for_buffer(dev);
+ next_packet = ntohs(inw(SEEQ_BUFFER));
+ pkt_hdr = inw(SEEQ_BUFFER);
+
+ if (net_debug>2) {
+ printk("%s: 0x%04x recv next=0x%04x, hdr=0x%04x\n",dev->name,lp->receive_ptr,next_packet,pkt_hdr);
+ }
+
+ if ((next_packet == 0) || ((pkt_hdr & SEEQPKTH_CHAIN)==0)) { /* Read all the frames? */
+ return; /* Done for now */
+ }
+
+ if ((pkt_hdr & SEEQPKTS_DONE)==0)
+ break;
+
+ if (next_packet < lp->receive_ptr) {
+ pkt_len = (next_packet + 0x10000 - ((DEFAULT_TEA+1)<<8)) - lp->receive_ptr - 4;
+ } else {
+ pkt_len = next_packet - lp->receive_ptr - 4;
+ }
+
+ if (next_packet < ((DEFAULT_TEA+1)<<8)) { /* is the next_packet address sane? */
+ printk("%s: recv packet ring corrupt, resetting board\n",dev->name);
+ seeq8005_init(dev,1);
+ return;
+ }
+
+ lp->receive_ptr = next_packet;
+
+ if (net_debug>2) {
+ printk("%s: recv len=0x%04x\n",dev->name,pkt_len);
+ }
+
+ if (pkt_hdr & SEEQPKTS_ANY_ERROR) { /* There was an error. */
+ dev->stats.rx_errors++;
+ if (pkt_hdr & SEEQPKTS_SHORT) dev->stats.rx_frame_errors++;
+ if (pkt_hdr & SEEQPKTS_DRIB) dev->stats.rx_frame_errors++;
+ if (pkt_hdr & SEEQPKTS_OVERSIZE) dev->stats.rx_over_errors++;
+ if (pkt_hdr & SEEQPKTS_CRC_ERR) dev->stats.rx_crc_errors++;
+ /* skip over this packet */
+ outw( SEEQCMD_FIFO_WRITE | SEEQCMD_DMA_INT_ACK | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+ outw( (lp->receive_ptr & 0xff00)>>8, SEEQ_REA);
+ } else {
+ /* Malloc up new buffer. */
+ struct sk_buff *skb;
+ unsigned char *buf;
+
+ skb = dev_alloc_skb(pkt_len);
+ if (skb == NULL) {
+ printk("%s: Memory squeeze, dropping packet.\n", dev->name);
+ dev->stats.rx_dropped++;
+ break;
+ }
+ skb_reserve(skb, 2); /* align data on 16 byte */
+ buf = skb_put(skb,pkt_len);
+
+ insw(SEEQ_BUFFER, buf, (pkt_len + 1) >> 1);
+
+ if (net_debug>2) {
+ char * p = buf;
+ printk("%s: recv ",dev->name);
+ for(i=0;i<14;i++) {
+ printk("%02x ",*(p++)&0xff);
+ }
+ printk("\n");
+ }
+
+ skb->protocol=eth_type_trans(skb,dev);
+ netif_rx(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += pkt_len;
+ }
+ } while ((--boguscount) && (pkt_hdr & SEEQPKTH_CHAIN));
+
+ /* If any worth-while packets have been received, netif_rx()
+ has done a mark_bh(NET_BH) for us and will work on them
+ when we get to the bottom-half routine. */
+}
+
+/* The inverse routine to net_open(). */
+static int seeq8005_close(struct net_device *dev)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int ioaddr = dev->base_addr;
+
+ lp->open_time = 0;
+
+ netif_stop_queue(dev);
+
+ /* Flush the Tx and disable Rx here. */
+ outw( SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+
+ free_irq(dev->irq, dev);
+
+ /* Update the statistics here. */
+
+ return 0;
+
+}
+
+/* Set or clear the multicast filter for this adaptor.
+ 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.
+ */
+static void set_multicast_list(struct net_device *dev)
+{
+/*
+ * I _could_ do up to 6 addresses here, but won't (yet?)
+ */
+
+#if 0
+ int ioaddr = dev->base_addr;
+/*
+ * hmm, not even sure if my matching works _anyway_ - seem to be receiving
+ * _everything_ . . .
+ */
+
+ if (num_addrs) { /* Enable promiscuous mode */
+ outw( (inw(SEEQ_CFG1) & ~SEEQCFG1_MATCH_MASK)| SEEQCFG1_MATCH_ALL, SEEQ_CFG1);
+ dev->flags|=IFF_PROMISC;
+ } else { /* Disable promiscuous mode, use normal mode */
+ outw( (inw(SEEQ_CFG1) & ~SEEQCFG1_MATCH_MASK)| SEEQCFG1_MATCH_BROAD, SEEQ_CFG1);
+ }
+#endif
+}
+
+void seeq8005_init(struct net_device *dev, int startp)
+{
+ struct net_local *lp = netdev_priv(dev);
+ int ioaddr = dev->base_addr;
+ int i;
+
+ outw(SEEQCFG2_RESET, SEEQ_CFG2); /* reset device */
+ udelay(5);
+
+ outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+ outw( 0, SEEQ_DMAAR); /* load start address into both low and high byte */
+/* wait_for_buffer(dev); */ /* I think that you only need a wait for memory buffer */
+ outw( SEEQCFG1_BUFFER_MAC0, SEEQ_CFG1);
+
+ for(i=0;i<6;i++) { /* set Station address */
+ outb(dev->dev_addr[i], SEEQ_BUFFER);
+ udelay(2);
+ }
+
+ outw( SEEQCFG1_BUFFER_TEA, SEEQ_CFG1); /* set xmit end area pointer to 16K */
+ outb( DEFAULT_TEA, SEEQ_BUFFER); /* this gives us 16K of send buffer and 48K of recv buffer */
+
+ lp->receive_ptr = (DEFAULT_TEA+1)<<8; /* so we can find our packet_header */
+ outw( lp->receive_ptr, SEEQ_RPR); /* Receive Pointer Register is set to recv buffer memory */
+
+ outw( 0x00ff, SEEQ_REA); /* Receive Area End */
+
+ if (net_debug>4) {
+ printk("%s: SA0 = ",dev->name);
+
+ outw( SEEQCMD_FIFO_READ | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
+ outw( 0, SEEQ_DMAAR);
+ outw( SEEQCFG1_BUFFER_MAC0, SEEQ_CFG1);
+
+ for(i=0;i<6;i++) {
+ printk("%02x ",inb(SEEQ_BUFFER));
+ }
+ printk("\n");
+ }
+
+ outw( SEEQCFG1_MAC0_EN | SEEQCFG1_MATCH_BROAD | SEEQCFG1_BUFFER_BUFFER, SEEQ_CFG1);
+ outw( SEEQCFG2_AUTO_REA | SEEQCFG2_CTRLO, SEEQ_CFG2);
+ outw( SEEQCMD_SET_RX_ON | SEEQCMD_TX_INT_EN | SEEQCMD_RX_INT_EN, SEEQ_CMD);
+
+ if (net_debug>4) {
+ int old_cfg1;
+ old_cfg1 = inw(SEEQ_CFG1);
+ printk("%s: stat = 0x%04x\n",dev->name,inw(SEEQ_STATUS));
+ printk("%s: cfg1 = 0x%04x\n",dev->name,old_cfg1);
+ printk("%s: cfg2 = 0x%04x\n",dev->name,inw(SEEQ_CFG2));
+ printk("%s: raer = 0x%04x\n",dev->name,inw(SEEQ_REA));
+ printk("%s: dmaar= 0x%04x\n",dev->name,inw(SEEQ_DMAAR));
+
+ }
+}
+
+
+static void hardware_send_packet(struct net_device * dev, char *buf, int length)
+{
+ int ioaddr = dev->base_addr;
+ int status = inw(SEEQ_STATUS);
+ int transmit_ptr = 0;
+ unsigned long tmp;
+
+ if (net_debug>4) {
+ printk("%s: send 0x%04x\n",dev->name,length);
+ }
+
+ /* Set FIFO to writemode and set packet-buffer address */
+ outw( SEEQCMD_FIFO_WRITE | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+ outw( transmit_ptr, SEEQ_DMAAR);
+
+ /* output SEEQ Packet header barfage */
+ outw( htons(length + 4), SEEQ_BUFFER);
+ outw( SEEQPKTH_XMIT | SEEQPKTH_DATA_FOLLOWS | SEEQPKTH_XMIT_INT_EN, SEEQ_BUFFER );
+
+ /* blat the buffer */
+ outsw( SEEQ_BUFFER, buf, (length +1) >> 1);
+ /* paranoia !! */
+ outw( 0, SEEQ_BUFFER);
+ outw( 0, SEEQ_BUFFER);
+
+ /* set address of start of transmit chain */
+ outw( transmit_ptr, SEEQ_TPR);
+
+ /* drain FIFO */
+ tmp = jiffies;
+ while ( (((status=inw(SEEQ_STATUS)) & SEEQSTAT_FIFO_EMPTY) == 0) && time_before(jiffies, tmp + HZ))
+ mb();
+
+ /* doit ! */
+ outw( SEEQCMD_WINDOW_INT_ACK | SEEQCMD_SET_TX_ON | (status & SEEQCMD_INT_MASK), SEEQ_CMD);
+
+}
+
+
+#ifdef MODULE
+
+static struct net_device *dev_seeq;
+MODULE_LICENSE("GPL");
+module_param(io, int, 0);
+module_param(irq, int, 0);
+MODULE_PARM_DESC(io, "SEEQ 8005 I/O base address");
+MODULE_PARM_DESC(irq, "SEEQ 8005 IRQ number");
+
+int __init init_module(void)
+{
+ dev_seeq = seeq8005_probe(-1);
+ if (IS_ERR(dev_seeq))
+ return PTR_ERR(dev_seeq);
+ return 0;
+}
+
+void __exit cleanup_module(void)
+{
+ unregister_netdev(dev_seeq);
+ release_region(dev_seeq->base_addr, SEEQ8005_IO_EXTENT);
+ free_netdev(dev_seeq);
+}
+
+#endif /* MODULE */