Initial magic number cleanup. Delete one unnecessary read and write.
Tested ia32 and ppc64.
Signed-off-by: Don Fry <[EMAIL PROTECTED]>
--- linux-2.6.18-rc6/drivers/net/pcnet32.c.napi Fri Sep 8 13:19:53 2006
+++ linux-2.6.18-rc6/drivers/net/pcnet32.c Fri Sep 8 13:57:13 2006
@@ -213,7 +213,7 @@ static int homepna[MAX_UNITS];
/* The PCNET32 Rx and Tx ring descriptors. */
struct pcnet32_rx_head {
u32 base;
- s16 buf_length;
+ s16 buf_length; /* two`s complement of length */
s16 status;
u32 msg_length;
u32 reserved;
@@ -221,7 +221,7 @@ struct pcnet32_rx_head {
struct pcnet32_tx_head {
u32 base;
- s16 length;
+ s16 length; /* two`s complement of length */
s16 status;
u32 misc;
u32 reserved;
@@ -901,7 +901,7 @@ static int pcnet32_loopback_test(struct
/* Reset the PCNET32 */
lp->a.reset(ioaddr);
- lp->a.write_csr(ioaddr, CSR4, 0x0915);
+ lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
/* switch pcnet32 to 32bit mode */
lp->a.write_bcr(ioaddr, 20, 2);
@@ -1393,7 +1393,7 @@ static int pcnet32_poll(struct net_devic
if (pcnet32_tx(dev)) {
/* reset the chip to clear the error condition, then restart */
lp->a.reset(ioaddr);
- lp->a.write_csr(ioaddr, CSR4, 0x0915);
+ lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
pcnet32_restart(dev, CSR0_START);
netif_wake_queue(dev);
}
@@ -1901,7 +1901,7 @@ pcnet32_probe1(unsigned long ioaddr, int
* boards will work.
*/
/* Trigger an initialization just for the interrupt. */
- a->write_csr(ioaddr, 0, 0x41);
+ a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_INIT);
mdelay(1);
dev->irq = probe_irq_off(irq_mask);
@@ -2268,9 +2268,9 @@ static int pcnet32_open(struct net_devic
#ifdef DO_DXSUFLO
if (lp->dxsuflo) { /* Disable transmit stop on underflow */
- val = lp->a.read_csr(ioaddr, 3);
+ val = lp->a.read_csr(ioaddr, CSR3);
val |= 0x40;
- lp->a.write_csr(ioaddr, 3, val);
+ lp->a.write_csr(ioaddr, CSR3, val);
}
#endif
@@ -2291,8 +2291,8 @@ static int pcnet32_open(struct net_devic
(lp->dma_addr +
offsetof(struct pcnet32_private, init_block)) >> 16);
- lp->a.write_csr(ioaddr, 4, 0x0915);
- lp->a.write_csr(ioaddr, 0, 0x0001);
+ lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
+ lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
netif_start_queue(dev);
@@ -2304,13 +2304,13 @@ static int pcnet32_open(struct net_devic
i = 0;
while (i++ < 100)
- if (lp->a.read_csr(ioaddr, 0) & 0x0100)
+ if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
break;
/*
* We used to clear the InitDone bit, 0x0100, here but Mark Stockton
* reports that doing so triggers a bug in the '974.
*/
- lp->a.write_csr(ioaddr, 0, 0x0042);
+ lp->a.write_csr(ioaddr, CSR0, CSR0_NORMAL);
if (netif_msg_ifup(lp))
printk(KERN_DEBUG
@@ -2318,7 +2318,7 @@ static int pcnet32_open(struct net_devic
dev->name, i,
(u32) (lp->dma_addr +
offsetof(struct pcnet32_private, init_block)),
- lp->a.read_csr(ioaddr, 0));
+ lp->a.read_csr(ioaddr, CSR0));
spin_unlock_irqrestore(&lp->lock, flags);
@@ -2389,7 +2389,7 @@ static int pcnet32_init_ring(struct net_
(rx_skbuff = lp->rx_skbuff[i] =
dev_alloc_skb(PKT_BUF_SZ))) {
/* there is not much, we can do at this point */
- if (pcnet32_debug & NETIF_MSG_DRV)
+ if (netif_msg_drv(lp))
printk(KERN_ERR
"%s: pcnet32_init_ring
dev_alloc_skb failed.\n",
dev->name);
@@ -2439,7 +2439,7 @@ static void pcnet32_restart(struct net_d
/* wait for stop */
for (i = 0; i < 100; i++)
- if (lp->a.read_csr(ioaddr, 0) & 0x0004)
+ if (lp->a.read_csr(ioaddr, CSR0) & CSR0_STOP)
break;
if (i >= 100 && netif_msg_drv(lp))
@@ -2452,13 +2452,13 @@ static void pcnet32_restart(struct net_d
return;
/* ReInit Ring */
- lp->a.write_csr(ioaddr, 0, 1);
+ lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
i = 0;
while (i++ < 1000)
- if (lp->a.read_csr(ioaddr, 0) & 0x0100)
+ if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
break;
- lp->a.write_csr(ioaddr, 0, csr0_bits);
+ lp->a.write_csr(ioaddr, CSR0, csr0_bits);
}
static void pcnet32_tx_timeout(struct net_device *dev)
@@ -2471,8 +2471,8 @@ static void pcnet32_tx_timeout(struct ne
if (pcnet32_debug & NETIF_MSG_DRV)
printk(KERN_ERR
"%s: transmit timed out, status %4.4x, resetting.\n",
- dev->name, lp->a.read_csr(ioaddr, 0));
- lp->a.write_csr(ioaddr, 0, 0x0004);
+ dev->name, lp->a.read_csr(ioaddr, CSR0));
+ lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
lp->stats.tx_errors++;
if (netif_msg_tx_err(lp)) {
int i;
@@ -2494,7 +2494,7 @@ static void pcnet32_tx_timeout(struct ne
le16_to_cpu(lp->tx_ring[i].status));
printk("\n");
}
- pcnet32_restart(dev, 0x0042);
+ pcnet32_restart(dev, CSR0_NORMAL);
dev->trans_start = jiffies;
netif_wake_queue(dev);
@@ -2515,7 +2515,7 @@ static int pcnet32_start_xmit(struct sk_
if (netif_msg_tx_queued(lp)) {
printk(KERN_DEBUG
"%s: pcnet32_start_xmit() called, csr0 %4.4x.\n",
- dev->name, lp->a.read_csr(ioaddr, 0));
+ dev->name, lp->a.read_csr(ioaddr, CSR0));
}
/* Default status -- will not enable Successful-TxDone
@@ -2546,7 +2546,7 @@ static int pcnet32_start_xmit(struct sk_
lp->stats.tx_bytes += skb->len;
/* Trigger an immediate send poll. */
- lp->a.write_csr(ioaddr, 0, 0x0048);
+ lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
dev->trans_start = jiffies;
@@ -2633,7 +2633,7 @@ pcnet32_interrupt(int irq, void *dev_id,
if (pcnet32_tx(dev)) {
/* reset the chip to clear the error condition, then
restart */
lp->a.reset(ioaddr);
- lp->a.write_csr(ioaddr, CSR4, 0x0915);
+ lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
pcnet32_restart(dev, CSR0_START);
netif_wake_queue(dev);
}
@@ -2672,10 +2672,10 @@ static int pcnet32_close(struct net_devi
if (netif_msg_ifdown(lp))
printk(KERN_DEBUG
"%s: Shutting down ethercard, status was %2.2x.\n",
- dev->name, lp->a.read_csr(ioaddr, 0));
+ dev->name, lp->a.read_csr(ioaddr, CSR0));
/* We stop the PCNET32 here -- it occasionally polls memory if we
don't. */
- lp->a.write_csr(ioaddr, 0, 0x0004);
+ lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
/*
* Switch back to 16bit mode to avoid problems with dumb
@@ -2701,13 +2701,10 @@ static struct net_device_stats *pcnet32_
{
struct pcnet32_private *lp = dev->priv;
unsigned long ioaddr = dev->base_addr;
- u16 saved_addr;
unsigned long flags;
spin_lock_irqsave(&lp->lock, flags);
- saved_addr = lp->a.read_rap(ioaddr);
lp->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
- lp->a.write_rap(ioaddr, saved_addr);
spin_unlock_irqrestore(&lp->lock, flags);
return &lp->stats;
--
Don Fry
[EMAIL PROTECTED]
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