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path: root/drivers/net/pcnet.c
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Diffstat (limited to 'drivers/net/pcnet.c')
-rw-r--r--drivers/net/pcnet.c122
1 files changed, 65 insertions, 57 deletions
diff --git a/drivers/net/pcnet.c b/drivers/net/pcnet.c
index 71a3110..237fbba 100644
--- a/drivers/net/pcnet.c
+++ b/drivers/net/pcnet.c
@@ -71,12 +71,16 @@ struct pcnet_init_block {
u32 reserved2;
};
-typedef struct pcnet_priv {
+struct pcnet_uncached_priv {
struct pcnet_rx_head rx_ring[RX_RING_SIZE];
struct pcnet_tx_head tx_ring[TX_RING_SIZE];
struct pcnet_init_block init_block;
+};
+
+typedef struct pcnet_priv {
+ struct pcnet_uncached_priv *uc;
/* Receive Buffer space */
- unsigned char rx_buf[RX_RING_SIZE][PKT_BUF_SZ + 4];
+ unsigned char (*rx_buf)[RX_RING_SIZE][PKT_BUF_SZ + 4];
int cur_rx;
int cur_tx;
} pcnet_priv_t;
@@ -283,6 +287,7 @@ static int pcnet_probe(struct eth_device *dev, bd_t *bis, int dev_nr)
static int pcnet_init(struct eth_device *dev, bd_t *bis)
{
+ struct pcnet_uncached_priv *uc;
int i, val;
u32 addr;
@@ -325,24 +330,35 @@ static int pcnet_init(struct eth_device *dev, bd_t *bis)
addr = (u32)malloc(sizeof(pcnet_priv_t) + 0x10);
addr = (addr + 0xf) & ~0xf;
lp = (pcnet_priv_t *)addr;
+
+ addr = (u32)memalign(ARCH_DMA_MINALIGN, sizeof(*lp->uc));
+ flush_dcache_range(addr, addr + sizeof(*lp->uc));
+ addr = UNCACHED_SDRAM(addr);
+ lp->uc = (struct pcnet_uncached_priv *)addr;
+
+ addr = (u32)memalign(ARCH_DMA_MINALIGN, sizeof(*lp->rx_buf));
+ flush_dcache_range(addr, addr + sizeof(*lp->rx_buf));
+ lp->rx_buf = (void *)addr;
}
- lp->init_block.mode = cpu_to_le16(0x0000);
- lp->init_block.filter[0] = 0x00000000;
- lp->init_block.filter[1] = 0x00000000;
+ uc = lp->uc;
+
+ uc->init_block.mode = cpu_to_le16(0x0000);
+ uc->init_block.filter[0] = 0x00000000;
+ uc->init_block.filter[1] = 0x00000000;
/*
* Initialize the Rx ring.
*/
lp->cur_rx = 0;
for (i = 0; i < RX_RING_SIZE; i++) {
- lp->rx_ring[i].base = PCI_TO_MEM_LE(dev, lp->rx_buf[i]);
- lp->rx_ring[i].buf_length = cpu_to_le16(-PKT_BUF_SZ);
- lp->rx_ring[i].status = cpu_to_le16(0x8000);
+ uc->rx_ring[i].base = PCI_TO_MEM_LE(dev, (*lp->rx_buf)[i]);
+ uc->rx_ring[i].buf_length = cpu_to_le16(-PKT_BUF_SZ);
+ uc->rx_ring[i].status = cpu_to_le16(0x8000);
PCNET_DEBUG1
("Rx%d: base=0x%x buf_length=0x%hx status=0x%hx\n", i,
- lp->rx_ring[i].base, lp->rx_ring[i].buf_length,
- lp->rx_ring[i].status);
+ uc->rx_ring[i].base, uc->rx_ring[i].buf_length,
+ uc->rx_ring[i].status);
}
/*
@@ -351,34 +367,34 @@ static int pcnet_init(struct eth_device *dev, bd_t *bis)
*/
lp->cur_tx = 0;
for (i = 0; i < TX_RING_SIZE; i++) {
- lp->tx_ring[i].base = 0;
- lp->tx_ring[i].status = 0;
+ uc->tx_ring[i].base = 0;
+ uc->tx_ring[i].status = 0;
}
/*
* Setup Init Block.
*/
- PCNET_DEBUG1("Init block at 0x%p: MAC", &lp->init_block);
+ PCNET_DEBUG1("Init block at 0x%p: MAC", &lp->uc->init_block);
for (i = 0; i < 6; i++) {
- lp->init_block.phys_addr[i] = dev->enetaddr[i];
- PCNET_DEBUG1(" %02x", lp->init_block.phys_addr[i]);
+ lp->uc->init_block.phys_addr[i] = dev->enetaddr[i];
+ PCNET_DEBUG1(" %02x", lp->uc->init_block.phys_addr[i]);
}
- lp->init_block.tlen_rlen = cpu_to_le16(TX_RING_LEN_BITS |
+ uc->init_block.tlen_rlen = cpu_to_le16(TX_RING_LEN_BITS |
RX_RING_LEN_BITS);
- lp->init_block.rx_ring = PCI_TO_MEM_LE(dev, lp->rx_ring);
- lp->init_block.tx_ring = PCI_TO_MEM_LE(dev, lp->tx_ring);
- flush_dcache_range((unsigned long)lp, (unsigned long)&lp->rx_buf);
+ uc->init_block.rx_ring = PCI_TO_MEM_LE(dev, uc->rx_ring);
+ uc->init_block.tx_ring = PCI_TO_MEM_LE(dev, uc->tx_ring);
PCNET_DEBUG1("\ntlen_rlen=0x%x rx_ring=0x%x tx_ring=0x%x\n",
- lp->init_block.tlen_rlen,
- lp->init_block.rx_ring, lp->init_block.tx_ring);
+ uc->init_block.tlen_rlen,
+ uc->init_block.rx_ring, uc->init_block.tx_ring);
/*
* Tell the controller where the Init Block is located.
*/
- addr = PCI_TO_MEM(dev, &lp->init_block);
+ barrier();
+ addr = PCI_TO_MEM(dev, &lp->uc->init_block);
pcnet_write_csr(dev, 1, addr & 0xffff);
pcnet_write_csr(dev, 2, (addr >> 16) & 0xffff);
@@ -408,7 +424,7 @@ static int pcnet_init(struct eth_device *dev, bd_t *bis)
static int pcnet_send(struct eth_device *dev, void *packet, int pkt_len)
{
int i, status;
- struct pcnet_tx_head *entry = &lp->tx_ring[lp->cur_tx];
+ struct pcnet_tx_head *entry = &lp->uc->tx_ring[lp->cur_tx];
PCNET_DEBUG2("Tx%d: %d bytes from 0x%p ", lp->cur_tx, pkt_len,
packet);
@@ -418,9 +434,7 @@ static int pcnet_send(struct eth_device *dev, void *packet, int pkt_len)
/* Wait for completion by testing the OWN bit */
for (i = 1000; i > 0; i--) {
- invalidate_dcache_range((unsigned long)entry,
- (unsigned long)entry + sizeof(*entry));
- status = le16_to_cpu(entry->status);
+ status = readw(&entry->status);
if ((status & 0x8000) == 0)
break;
udelay(100);
@@ -437,13 +451,10 @@ static int pcnet_send(struct eth_device *dev, void *packet, int pkt_len)
* Setup Tx ring. Caution: the write order is important here,
* set the status with the "ownership" bits last.
*/
- status = 0x8300;
- entry->length = cpu_to_le16(-pkt_len);
- entry->misc = 0x00000000;
- entry->base = PCI_TO_MEM_LE(dev, packet);
- entry->status = cpu_to_le16(status);
- flush_dcache_range((unsigned long)entry,
- (unsigned long)entry + sizeof(*entry));
+ writew(-pkt_len, &entry->length);
+ writel(0, &entry->misc);
+ writel(PCI_TO_MEM(dev, packet), &entry->base);
+ writew(0x8300, &entry->status);
/* Trigger an immediate send poll. */
pcnet_write_csr(dev, 0, 0x0008);
@@ -459,54 +470,51 @@ static int pcnet_send(struct eth_device *dev, void *packet, int pkt_len)
static int pcnet_recv (struct eth_device *dev)
{
struct pcnet_rx_head *entry;
+ unsigned char *buf;
int pkt_len = 0;
- u16 status;
+ u16 status, err_status;
while (1) {
- entry = &lp->rx_ring[lp->cur_rx];
- invalidate_dcache_range((unsigned long)entry,
- (unsigned long)entry + sizeof(*entry));
+ entry = &lp->uc->rx_ring[lp->cur_rx];
/*
* If we own the next entry, it's a new packet. Send it up.
*/
- status = le16_to_cpu(entry->status);
+ status = readw(&entry->status);
if ((status & 0x8000) != 0)
break;
- status >>= 8;
+ err_status = status >> 8;
- if (status != 0x03) { /* There was an error. */
+ if (err_status != 0x03) { /* There was an error. */
printf("%s: Rx%d", dev->name, lp->cur_rx);
- PCNET_DEBUG1(" (status=0x%x)", status);
- if (status & 0x20)
+ PCNET_DEBUG1(" (status=0x%x)", err_status);
+ if (err_status & 0x20)
printf(" Frame");
- if (status & 0x10)
+ if (err_status & 0x10)
printf(" Overflow");
- if (status & 0x08)
+ if (err_status & 0x08)
printf(" CRC");
- if (status & 0x04)
+ if (err_status & 0x04)
printf(" Fifo");
printf(" Error\n");
- entry->status &= le16_to_cpu(0x03ff);
+ status &= 0x03ff;
} else {
- pkt_len = (le32_to_cpu(entry->msg_length) & 0xfff) - 4;
+ pkt_len = (readl(&entry->msg_length) & 0xfff) - 4;
if (pkt_len < 60) {
printf("%s: Rx%d: invalid packet length %d\n",
dev->name, lp->cur_rx, pkt_len);
} else {
- invalidate_dcache_range(
- (unsigned long)lp->rx_buf[lp->cur_rx],
- (unsigned long)lp->rx_buf[lp->cur_rx] +
- pkt_len);
- NetReceive(lp->rx_buf[lp->cur_rx], pkt_len);
+ buf = (*lp->rx_buf)[lp->cur_rx];
+ invalidate_dcache_range((unsigned long)buf,
+ (unsigned long)buf + pkt_len);
+ NetReceive(buf, pkt_len);
PCNET_DEBUG2("Rx%d: %d bytes from 0x%p\n",
- lp->cur_rx, pkt_len,
- lp->rx_buf[lp->cur_rx]);
+ lp->cur_rx, pkt_len, buf);
}
}
- entry->status |= cpu_to_le16(0x8000);
- flush_dcache_range((unsigned long)entry,
- (unsigned long)entry + sizeof(*entry));
+
+ status |= 0x8000;
+ writew(status, &entry->status);
if (++lp->cur_rx >= RX_RING_SIZE)
lp->cur_rx = 0;
generated by cgit v1.1 at 2024-12-18 19:13:31 +0000