/*
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.
extern void seeq8005_init(struct net_device *dev, int startp);
static inline void wait_for_buffer(struct net_device *dev);
-\f
+
/* 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.
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: 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 */
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) {
}
}
-#if 0
- /*
+#if 0
+ /*
* testing the packet buffer memory doesn't work yet
- * but all other buffer accesses do
+ * but all other buffer accesses do
* - fixing is not a priority
*/
if (net_debug>1) { /* test packet buffer memory */
; /* 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.
+ * or don't know which one to set.
*/
dev->irq = 9;
return retval;
}
-\f
+
/* Open/initialize the board. This is called (in the current kernel)
sometime after booting when the 'ifconfig' program is run.
unsigned char *buf;
if (length < ETH_ZLEN) {
- skb = skb_padto(skb, ETH_ZLEN);
- if (skb == NULL)
+ if (skb_padto(skb, ETH_ZLEN))
return 0;
length = ETH_ZLEN;
}
/* Block a timer-based transmit from overlapping */
netif_stop_queue(dev);
-
- hardware_send_packet(dev, buf, length);
+
+ hardware_send_packet(dev, buf, length);
dev->trans_start = jiffies;
lp->stats.tx_bytes += length;
dev_kfree_skb (skb);
return 0;
}
-\f
+
/*
* wait_for_buffer
*
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);
}
-\f
+
/* 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)
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);
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);
}
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);
lp->open_time = 0;
netif_stop_queue(dev);
-
+
/* Flush the Tx and disable Rx here. */
outw( SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
* 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;
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) {
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);
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)
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);
-
+
}
MODULE_PARM_DESC(io, "SEEQ 8005 I/O base address");
MODULE_PARM_DESC(irq, "SEEQ 8005 IRQ number");
-int init_module(void)
+int __init init_module(void)
{
dev_seeq = seeq8005_probe(-1);
if (IS_ERR(dev_seeq))
}
#endif /* MODULE */
-\f
+
/*
* Local variables:
* compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c skeleton.c"
git.openpandora.org / pandora-kernel.git / blobdiff