/* sun3lance.c: Ethernet driver for SUN3 Lance chip */
/*
- Sun3 Lance ethernet driver, by Sam Creasey (sammy@users.qual.net).
+ Sun3 Lance ethernet driver, by Sam Creasey (sammy@users.qual.net).
This driver is a part of the linux kernel, and is thus distributed
under the GNU General Public License.
-
+
The values used in LANCE_OBIO and LANCE_IRQ seem to be empirically
true for the correct IRQ and address of the lance registers. They
have not been widely tested, however. What we probably need is a
"proper" way to search for a device in the sun3's prom, but, alas,
- linux has no such thing.
+ linux has no such thing.
This driver is largely based on atarilance.c, by Roman Hodek. Other
sources of inspiration were the NetBSD sun3 am7990 driver, and the
- linux sparc lance driver (sunlance.c).
+ linux sparc lance driver (sunlance.c).
There are more assumptions made throughout this driver, it almost
certainly still needs work, but it does work at least for RARP/BOOTP and
mounting the root NFS filesystem.
-
+
*/
static char *version = "sun3lance.c: v1.2 1/12/2001 Sam Creasey (sammy@sammy.net)\n";
#include <linux/skbuff.h>
#include <linux/bitops.h>
+#include <asm/cacheflush.h>
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/io.h>
/* sun3/60 addr/irq for the lance chip. If your sun is different,
change this. */
#define LANCE_OBIO 0x120000
-#define LANCE_IRQ IRQ3
+#define LANCE_IRQ IRQ_AUTO_3
/* Debug level:
* 0 = silent, print only serious errors
#else
static int lance_debug = 1;
#endif
-MODULE_PARM(lance_debug, "i");
+module_param(lance_debug, int, 0);
MODULE_PARM_DESC(lance_debug, "SUN3 Lance debug level (0-3)");
MODULE_LICENSE("GPL");
static int lance_open( struct net_device *dev );
static void lance_init_ring( struct net_device *dev );
static int lance_start_xmit( struct sk_buff *skb, struct net_device *dev );
-static irqreturn_t lance_interrupt( int irq, void *dev_id, struct pt_regs *fp );
+static irqreturn_t lance_interrupt( int irq, void *dev_id);
static int lance_rx( struct net_device *dev );
static int lance_close( struct net_device *dev );
static struct net_device_stats *lance_get_stats( struct net_device *dev );
out1:
#ifdef CONFIG_SUN3
- iounmap((void *)dev->base_addr);
+ iounmap((void __iomem *)dev->base_addr);
#endif
out:
free_netdev(dev);
}
static int __init lance_probe( struct net_device *dev)
-{
+{
unsigned long ioaddr;
-
+
struct lance_private *lp;
int i;
static int did_version;
/* test to see if there's really a lance here */
/* (CSRO_INIT shouldn't be readable) */
-
+
ioaddr_probe = (volatile unsigned short *)ioaddr;
tmp1 = ioaddr_probe[0];
tmp2 = ioaddr_probe[1];
ioaddr_probe[1] = tmp2;
#ifdef CONFIG_SUN3
- iounmap((void *)ioaddr);
+ iounmap((void __iomem *)ioaddr);
#endif
return 0;
}
lp->iobase = (volatile unsigned short *)ioaddr;
dev->base_addr = (unsigned long)ioaddr; /* informational only */
- REGA(CSR0) = CSR0_STOP;
+ REGA(CSR0) = CSR0_STOP;
- request_irq(LANCE_IRQ, lance_interrupt, SA_INTERRUPT, "SUN3 Lance", dev);
+ request_irq(LANCE_IRQ, lance_interrupt, IRQF_DISABLED, "SUN3 Lance", dev);
dev->irq = (unsigned short)LANCE_IRQ;
DPRINTK(2, ("initaddr: %08lx rx_ring: %08lx tx_ring: %08lx\n",
dvma_vtob(&(MEM->init)), dvma_vtob(MEM->rx_head),
- (dvma_vtob(MEM->tx_head))));
+ (dvma_vtob(MEM->tx_head))));
if (did_version++ == 0)
printk( version );
DREG = CSR0_IDON | CSR0_STRT | CSR0_INEA;
netif_start_queue(dev);
-
+
DPRINTK( 2, ( "%s: LANCE is open, csr0 %04x\n", dev->name, DREG ));
return( 0 );
for( i = 0; i < TX_RING_SIZE; i++ ) {
MEM->tx_head[i].base = dvma_vtob(MEM->tx_data[i]);
MEM->tx_head[i].flag = 0;
- MEM->tx_head[i].base_hi =
+ MEM->tx_head[i].base_hi =
(dvma_vtob(MEM->tx_data[i])) >>16;
MEM->tx_head[i].length = 0;
MEM->tx_head[i].misc = 0;
for( i = 0; i < RX_RING_SIZE; i++ ) {
MEM->rx_head[i].base = dvma_vtob(MEM->rx_data[i]);
MEM->rx_head[i].flag = RMD1_OWN_CHIP;
- MEM->rx_head[i].base_hi =
+ MEM->rx_head[i].base_hi =
(dvma_vtob(MEM->rx_data[i])) >> 16;
MEM->rx_head[i].buf_length = -PKT_BUF_SZ | 0xf000;
MEM->rx_head[i].msg_length = 0;
lance_init_ring(dev);
REGA( CSR0 ) = CSR0_INEA | CSR0_INIT | CSR0_STRT;
-
+
netif_start_queue(dev);
dev->trans_start = jiffies;
-
+
return 0;
}
-
+
/* Block a timer-based transmit from overlapping. This could better be
done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */
/* Block a timer-based transmit from overlapping with us by
stopping the queue for a bit... */
-
+
netif_stop_queue(dev);
-
+
if (test_and_set_bit( 0, (void*)&lp->lock ) != 0) {
printk( "%s: tx queue lock!.\n", dev->name);
/* don't clear dev->tbusy flag. */
printk(" data at 0x%08x len %d\n", (int)skb->data,
(int)skb->len );
}
-#endif
+#endif
/* We're not prepared for the int until the last flags are set/reset.
* And the int may happen already after setting the OWN_CHIP... */
local_irq_save(flags);
lp->lock = 0;
if ((MEM->tx_head[(entry+1) & TX_RING_MOD_MASK].flag & TMD1_OWN) ==
- TMD1_OWN_HOST)
+ TMD1_OWN_HOST)
netif_start_queue(dev);
local_irq_restore(flags);
/* The LANCE interrupt handler. */
-static irqreturn_t lance_interrupt( int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t lance_interrupt( int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct lance_private *lp = netdev_priv(dev);
if (in_interrupt)
DPRINTK( 2, ( "%s: Re-entering the interrupt handler.\n", dev->name ));
in_interrupt = 1;
-
+
still_more:
flush_cache_all();
-
+
AREG = CSR0;
csr0 = DREG;
// if(lance_debug >= 3) {
// int i;
-//
+//
// printk("%s: tx int\n", dev->name);
-//
+//
// for(i = 0; i < TX_RING_SIZE; i++)
// printk("ring %d flag=%04x\n", i,
// MEM->tx_head[i].flag);
// }
-
+
while( old_tx != lp->new_tx) {
- struct lance_tx_head *head = &(MEM->tx_head[old_tx]);
-
+ struct lance_tx_head *head = &(MEM->tx_head[old_tx]);
+
DPRINTK(3, ("on tx_ring %d\n", old_tx));
if (head->flag & TMD1_OWN_CHIP)
break; /* It still hasn't been Txed */
-
+
if (head->flag & TMD1_ERR) {
int status = head->misc;
lp->stats.tx_errors++;
if (status & (TMD3_UFLO | TMD3_BUFF)) {
lp->stats.tx_fifo_errors++;
printk("%s: Tx FIFO error\n",
- dev->name);
+ dev->name);
REGA(CSR0) = CSR0_STOP;
REGA(CSR3) = CSR3_BSWP;
lance_init_ring(dev);
return IRQ_HANDLED;
}
} else if(head->flag & (TMD1_ENP | TMD1_STP)) {
-
+
head->flag &= ~(TMD1_ENP | TMD1_STP);
if(head->flag & (TMD1_ONE | TMD1_MORE))
lp->stats.collisions++;
-
+
lp->stats.tx_packets++;
DPRINTK(3, ("cleared tx ring %d\n", old_tx));
}
if (csr0 & CSR0_RINT) /* Rx interrupt */
lance_rx( dev );
-
+
/* Log misc errors. */
if (csr0 & CSR0_BABL) lp->stats.tx_errors++; /* Tx babble. */
if (csr0 & CSR0_MISS) lp->stats.rx_errors++; /* Missed a Rx frame. */
while( (MEM->rx_head[entry].flag & RMD1_OWN) == RMD1_OWN_HOST ) {
struct lance_rx_head *head = &(MEM->rx_head[entry]);
int status = head->flag;
-
+
if (status != (RMD1_ENP|RMD1_STP)) { /* There was an error. */
/* There is a tricky error noted by John Murphy,
- <murf@perftech.com> to Russ Nelson: Even with
+ <murf@perftech.com> to Russ Nelson: Even with
full-sized buffers it's possible for a jabber packet to use two
buffers, with only the last correctly noting the error. */
if (status & RMD1_ENP) /* Only count a general error at the */
if (skb == NULL) {
DPRINTK( 1, ( "%s: Memory squeeze, deferring packet.\n",
dev->name ));
-
+
lp->stats.rx_dropped++;
head->msg_length = 0;
head->flag |= RMD1_OWN_CHIP;
if (lance_debug >= 3) {
u_char *data = PKTBUF_ADDR(head);
printk( "%s: RX pkt %d type 0x%04x len %d\n ", dev->name, entry, ((u_short *)data)[6], pkt_len);
- }
+ }
skb->dev = dev;
if (dev->flags & IFF_PROMISC) {
/* Log any net taps. */
- DPRINTK( 1, ( "%s: Promiscuous mode enabled.\n", dev->name ));
+ DPRINTK( 3, ( "%s: Promiscuous mode enabled.\n", dev->name ));
REGA( CSR15 ) = 0x8000; /* Set promiscuous mode */
} else {
short multicast_table[4];
static struct net_device *sun3lance_dev;
-int init_module(void)
+int __init init_module(void)
{
sun3lance_dev = sun3lance_probe(-1);
if (IS_ERR(sun3lance_dev))
return 0;
}
-void cleanup_module(void)
+void __exit cleanup_module(void)
{
unregister_netdev(sun3lance_dev);
#ifdef CONFIG_SUN3
- iounmap((void *)sun3lance_dev->base_addr);
+ iounmap((void __iomem *)sun3lance_dev->base_addr);
#endif
free_netdev(sun3lance_dev);
}
git://git.onelab.eu / linux-2.6.git / blobdiff