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authorAl Viro <viro@ftp.linux.org.uk>2007-12-23 20:01:04 +0000
committerJeff Garzik <jeff@garzik.org>2008-01-12 17:33:03 -0500
commit6f35d5d51619a1aa463180154c2d3c18a63e3950 (patch)
treec02fdde82c990247d8a26741cc7f25e323be6f34
parent460c54b779fce3490ab70a84fd2ef59250ca3d57 (diff)
downloadlinux-stericsson-6f35d5d51619a1aa463180154c2d3c18a63e3950.tar.gz
xircom_cb endianness fixes
* descriptors inside the rx and tx rings are l-e * don't cpu_to_le32() the argument of outl() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/net/tulip/xircom_cb.c54
1 files changed, 26 insertions, 28 deletions
diff --git a/drivers/net/tulip/xircom_cb.c b/drivers/net/tulip/xircom_cb.c
index 70befe33e454..8fc7274642eb 100644
--- a/drivers/net/tulip/xircom_cb.c
+++ b/drivers/net/tulip/xircom_cb.c
@@ -83,8 +83,8 @@ static int bufferoffsets[NUMDESCRIPTORS] = {128,2048,4096,6144};
struct xircom_private {
/* Send and receive buffers, kernel-addressable and dma addressable forms */
- unsigned int *rx_buffer;
- unsigned int *tx_buffer;
+ __le32 *rx_buffer;
+ __le32 *tx_buffer;
dma_addr_t rx_dma_handle;
dma_addr_t tx_dma_handle;
@@ -412,19 +412,20 @@ static int xircom_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* FIXME: The specification tells us that the length we send HAS to be a multiple of
4 bytes. */
- card->tx_buffer[4*desc+1] = skb->len;
- if (desc == NUMDESCRIPTORS-1)
- card->tx_buffer[4*desc+1] |= (1<<25); /* bit 25: last descriptor of the ring */
+ card->tx_buffer[4*desc+1] = cpu_to_le32(skb->len);
+ if (desc == NUMDESCRIPTORS - 1) /* bit 25: last descriptor of the ring */
+ card->tx_buffer[4*desc+1] |= cpu_to_le32(1<<25);
- card->tx_buffer[4*desc+1] |= 0xF0000000;
+ card->tx_buffer[4*desc+1] |= cpu_to_le32(0xF0000000);
/* 0xF0... means want interrupts*/
card->tx_skb[desc] = skb;
wmb();
/* This gives the descriptor to the card */
- card->tx_buffer[4*desc] = 0x80000000;
+ card->tx_buffer[4*desc] = cpu_to_le32(0x80000000);
trigger_transmit(card);
- if (((int)card->tx_buffer[nextdescriptor*4])<0) { /* next descriptor is occupied... */
+ if (card->tx_buffer[nextdescriptor*4] & cpu_to_le32(0x8000000)) {
+ /* next descriptor is occupied... */
netif_stop_queue(dev);
}
card->transmit_used = nextdescriptor;
@@ -590,8 +591,7 @@ descriptors and programs the addresses into the card.
*/
static void setup_descriptors(struct xircom_private *card)
{
- unsigned int val;
- unsigned int address;
+ u32 address;
int i;
enter("setup_descriptors");
@@ -604,16 +604,16 @@ static void setup_descriptors(struct xircom_private *card)
for (i=0;i<NUMDESCRIPTORS;i++ ) {
/* Rx Descr0: It's empty, let the card own it, no errors -> 0x80000000 */
- card->rx_buffer[i*4 + 0] = 0x80000000;
+ card->rx_buffer[i*4 + 0] = cpu_to_le32(0x80000000);
/* Rx Descr1: buffer 1 is 1536 bytes, buffer 2 is 0 bytes */
- card->rx_buffer[i*4 + 1] = 1536;
- if (i==NUMDESCRIPTORS-1)
- card->rx_buffer[i*4 + 1] |= (1 << 25); /* bit 25 is "last descriptor" */
+ card->rx_buffer[i*4 + 1] = cpu_to_le32(1536);
+ if (i == NUMDESCRIPTORS - 1) /* bit 25 is "last descriptor" */
+ card->rx_buffer[i*4 + 1] |= cpu_to_le32(1 << 25);
/* Rx Descr2: address of the buffer
we store the buffer at the 2nd half of the page */
- address = (unsigned long) card->rx_dma_handle;
+ address = card->rx_dma_handle;
card->rx_buffer[i*4 + 2] = cpu_to_le32(address + bufferoffsets[i]);
/* Rx Desc3: address of 2nd buffer -> 0 */
card->rx_buffer[i*4 + 3] = 0;
@@ -621,9 +621,8 @@ static void setup_descriptors(struct xircom_private *card)
wmb();
/* Write the receive descriptor ring address to the card */
- address = (unsigned long) card->rx_dma_handle;
- val = cpu_to_le32(address);
- outl(val, card->io_port + CSR3); /* Receive descr list address */
+ address = card->rx_dma_handle;
+ outl(address, card->io_port + CSR3); /* Receive descr list address */
/* transmit descriptors */
@@ -633,13 +632,13 @@ static void setup_descriptors(struct xircom_private *card)
/* Tx Descr0: Empty, we own it, no errors -> 0x00000000 */
card->tx_buffer[i*4 + 0] = 0x00000000;
/* Tx Descr1: buffer 1 is 1536 bytes, buffer 2 is 0 bytes */
- card->tx_buffer[i*4 + 1] = 1536;
- if (i==NUMDESCRIPTORS-1)
- card->tx_buffer[i*4 + 1] |= (1 << 25); /* bit 25 is "last descriptor" */
+ card->tx_buffer[i*4 + 1] = cpu_to_le32(1536);
+ if (i == NUMDESCRIPTORS - 1) /* bit 25 is "last descriptor" */
+ card->tx_buffer[i*4 + 1] |= cpu_to_le32(1 << 25);
/* Tx Descr2: address of the buffer
we store the buffer at the 2nd half of the page */
- address = (unsigned long) card->tx_dma_handle;
+ address = card->tx_dma_handle;
card->tx_buffer[i*4 + 2] = cpu_to_le32(address + bufferoffsets[i]);
/* Tx Desc3: address of 2nd buffer -> 0 */
card->tx_buffer[i*4 + 3] = 0;
@@ -647,9 +646,8 @@ static void setup_descriptors(struct xircom_private *card)
wmb();
/* wite the transmit descriptor ring to the card */
- address = (unsigned long) card->tx_dma_handle;
- val =cpu_to_le32(address);
- outl(val, card->io_port + CSR4); /* xmit descr list address */
+ address = card->tx_dma_handle;
+ outl(address, card->io_port + CSR4); /* xmit descr list address */
leave("setup_descriptors");
}
@@ -1180,7 +1178,7 @@ static void investigate_read_descriptor(struct net_device *dev,struct xircom_pri
int status;
enter("investigate_read_descriptor");
- status = card->rx_buffer[4*descnr];
+ status = le32_to_cpu(card->rx_buffer[4*descnr]);
if ((status > 0)) { /* packet received */
@@ -1210,7 +1208,7 @@ static void investigate_read_descriptor(struct net_device *dev,struct xircom_pri
out:
/* give the buffer back to the card */
- card->rx_buffer[4*descnr] = 0x80000000;
+ card->rx_buffer[4*descnr] = cpu_to_le32(0x80000000);
trigger_receive(card);
}
@@ -1226,7 +1224,7 @@ static void investigate_write_descriptor(struct net_device *dev, struct xircom_p
enter("investigate_write_descriptor");
- status = card->tx_buffer[4*descnr];
+ status = le32_to_cpu(card->tx_buffer[4*descnr]);
#if 0
if (status & 0x8000) { /* Major error */
printk(KERN_ERR "Major transmit error status %x \n", status);