Skip to content

Commit

Permalink
[PATCH] pcnet32: magic number cleanup
Browse files Browse the repository at this point in the history 
Change some magic numbers to clearer names.  A few whitespace changes.

Tested ia32 and ppc64.

Signed-off-by:  Don Fry <brazilnut@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
  • Loading branch information
Don Fry authored and Jeff Garzik committed Sep 13, 2006
1 parent 5c99346 commit b368a3f
Showing 1 changed file with 30 additions and 30 deletions.
60 changes: 30 additions & 30 deletions drivers/net/pcnet32.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -207,15 +207,15 @@ 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;
};

struct pcnet32_tx_head {
u32 base;
s16 length;
s16 length; /* two`s complement of length */
s16 status;
u32 misc;
u32 reserved;
Expand Down Expand Up @@ -804,15 +804,15 @@ static int pcnet32_set_ringparam(struct net_device *dev,
}
if ((1 << i) != lp->tx_ring_size)
pcnet32_realloc_tx_ring(dev, lp, i);

size = min(ering->rx_pending, (unsigned int)RX_MAX_RING_SIZE);
for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
if (size <= (1 << i))
break;
}
if ((1 << i) != lp->rx_ring_size)
pcnet32_realloc_rx_ring(dev, lp, i);

dev->weight = lp->rx_ring_size / 2;

if (netif_running(dev)) {
Expand Down Expand Up @@ -892,7 +892,7 @@ static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)

/* 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);
Expand Down Expand Up @@ -1602,7 +1602,7 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
* 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);
Expand Down Expand Up @@ -1965,9 +1965,9 @@ static int pcnet32_open(struct net_device *dev)

#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

Expand All @@ -1988,8 +1988,8 @@ static int pcnet32_open(struct net_device *dev)
(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);

Expand All @@ -2001,21 +2001,21 @@ static int pcnet32_open(struct net_device *dev)

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
"%s: pcnet32 open after %d ticks, init block %#x csr0 %4.4x.\n",
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);

Expand Down Expand Up @@ -2086,7 +2086,7 @@ static int pcnet32_init_ring(struct net_device *dev)
(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);
Expand Down Expand Up @@ -2136,7 +2136,7 @@ static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)

/* 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))
Expand All @@ -2149,13 +2149,13 @@ static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
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)
Expand All @@ -2168,8 +2168,8 @@ static void pcnet32_tx_timeout(struct net_device *dev)
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;
Expand All @@ -2191,7 +2191,7 @@ static void pcnet32_tx_timeout(struct net_device *dev)
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);
Expand All @@ -2212,7 +2212,7 @@ static int pcnet32_start_xmit(struct sk_buff *skb, struct net_device *dev)
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
Expand Down Expand Up @@ -2243,7 +2243,7 @@ static int pcnet32_start_xmit(struct sk_buff *skb, struct net_device *dev)
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;

Expand Down Expand Up @@ -2425,18 +2425,18 @@ pcnet32_interrupt(int irq, void *dev_id, struct pt_regs *regs)
if (must_restart) {
/* reset the chip to clear the error condition, then restart */
lp->a.reset(ioaddr);
lp->a.write_csr(ioaddr, 4, 0x0915);
pcnet32_restart(dev, 0x0002);
lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
pcnet32_restart(dev, CSR0_START);
netif_wake_queue(dev);
}
}

/* Set interrupt enable. */
lp->a.write_csr(ioaddr, 0, 0x0040);
lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN);

if (netif_msg_intr(lp))
printk(KERN_DEBUG "%s: exiting interrupt, csr0=%#4.4x.\n",
dev->name, lp->a.read_csr(ioaddr, 0));
dev->name, lp->a.read_csr(ioaddr, CSR0));

spin_unlock(&lp->lock);

Expand Down Expand Up @@ -2616,10 +2616,10 @@ static int pcnet32_close(struct net_device *dev)
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
Expand Down Expand Up @@ -2734,7 +2734,7 @@ static void pcnet32_set_multicast_list(struct net_device *dev)
/* clear SUSPEND (SPND) - CSR5 bit 0 */
csr5 = lp->a.read_csr(ioaddr, CSR5);
lp->a.write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
} else {
} else {
lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
pcnet32_restart(dev, CSR0_NORMAL);
netif_wake_queue(dev);
Expand Down

0 comments on commit b368a3f

Please sign in to comment.