diff options
Diffstat (limited to 'drivers/net/seeq8005.c')
| -rw-r--r-- | drivers/net/seeq8005.c | 769 |
1 files changed, 769 insertions, 0 deletions
diff --git a/drivers/net/seeq8005.c b/drivers/net/seeq8005.c new file mode 100644 index 00000000000..79dca398f3a --- /dev/null +++ b/drivers/net/seeq8005.c @@ -0,0 +1,769 @@ +/* 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/slab.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 <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 { + struct net_device_stats stats; + 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 int seeq8005_send_packet(struct sk_buff *skb, struct net_device *dev); +static irqreturn_t seeq8005_interrupt(int irq, void *dev_id, struct pt_regs *regs); +static void seeq8005_rx(struct net_device *dev); +static int seeq8005_close(struct net_device *dev); +static struct net_device_stats *seeq8005_get_stats(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); +} + +/* 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++) + printk(" %2.2x", dev->dev_addr[i] = SA_prom[i+6]); + + 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->open = seeq8005_open; + dev->stop = seeq8005_close; + dev->hard_start_xmit = seeq8005_send_packet; + dev->tx_timeout = seeq8005_timeout; + dev->watchdog_timeo = HZ/20; + dev->get_stats = seeq8005_get_stats; + dev->set_multicast_list = set_multicast_list; + 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; + netif_wake_queue(dev); +} + +static int seeq8005_send_packet(struct sk_buff *skb, struct net_device *dev) +{ + struct net_local *lp = netdev_priv(dev); + short length = skb->len; + unsigned char *buf; + + if (length < ETH_ZLEN) { + skb = skb_padto(skb, ETH_ZLEN); + if (skb == NULL) + return 0; + length = ETH_ZLEN; + } + buf = skb->data; + + /* Block a timer-based transmit from overlapping */ + netif_stop_queue(dev); + + hardware_send_packet(dev, buf, length); + dev->trans_start = jiffies; + lp->stats.tx_bytes += length; + dev_kfree_skb (skb); + /* You might need to clean up and record Tx statistics here. */ + + return 0; +} + +/* + * 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 pt_regs * regs) +{ + 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); + lp->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. */ + lp->stats.rx_errors++; + if (pkt_hdr & SEEQPKTS_SHORT) lp->stats.rx_frame_errors++; + if (pkt_hdr & SEEQPKTS_DRIB) lp->stats.rx_frame_errors++; + if (pkt_hdr & SEEQPKTS_OVERSIZE) lp->stats.rx_over_errors++; + if (pkt_hdr & SEEQPKTS_CRC_ERR) lp->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); + lp->stats.rx_dropped++; + break; + } + skb->dev = dev; + 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->last_rx = jiffies; + lp->stats.rx_packets++; + lp->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. */ + return; +} + +/* 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; + +} + +/* Get the current statistics. This may be called with the card open or + closed. */ +static struct net_device_stats *seeq8005_get_stats(struct net_device *dev) +{ + struct net_local *lp = netdev_priv(dev); + + return &lp->stats; +} + +/* 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; + int 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) && (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_module(void) +{ + dev_seeq = seeq8005_probe(-1); + if (IS_ERR(dev_seeq)) + return PTR_ERR(dev_seeq); + return 0; +} + +void cleanup_module(void) +{ + unregister_netdev(dev_seeq); + release_region(dev_seeq->base_addr, SEEQ8005_IO_EXTENT); + free_netdev(dev_seeq); +} + +#endif /* MODULE */ + +/* + * Local variables: + * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c skeleton.c" + * version-control: t + * kept-new-versions: 5 + * tab-width: 4 + * End: + */ |