TBD:
* look at deferring rx frames rather than discarding (as per tulip)
* handle tx ring full as per tulip
- * performace test to tune rx_copybreak
+ * performance test to tune rx_copybreak
Most of my modifications relate to the braindead big-endian
implementation by Intel. When the i596 is operating in
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/ioport.h>
-#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/irq.h>
+#include <linux/gfp.h>
/* DEBUG flags
*/
struct i596_tbd {
unsigned short size;
unsigned short pad;
- dma_addr_t next;
- dma_addr_t data;
+ u32 next;
+ u32 data;
u32 cache_pad[5]; /* Total 32 bytes... */
};
struct i596_cmd *v_next; /* Address from CPUs viewpoint */
unsigned short status;
unsigned short command;
- dma_addr_t b_next; /* Address from i596 viewpoint */
+ u32 b_next; /* Address from i596 viewpoint */
};
struct tx_cmd {
struct i596_cmd cmd;
- dma_addr_t tbd;
+ u32 tbd;
unsigned short size;
unsigned short pad;
struct sk_buff *skb; /* So we can free it after tx */
struct i596_rfd {
unsigned short stat;
unsigned short cmd;
- dma_addr_t b_next; /* Address from i596 viewpoint */
- dma_addr_t rbd;
+ u32 b_next; /* Address from i596 viewpoint */
+ u32 rbd;
unsigned short count;
unsigned short size;
struct i596_rfd *v_next; /* Address from CPUs viewpoint */
};
struct i596_rbd {
- /* hardware data */
- unsigned short count;
- unsigned short zero1;
- dma_addr_t b_next;
- dma_addr_t b_data; /* Address from i596 viewpoint */
- unsigned short size;
- unsigned short zero2;
- /* driver data */
- struct sk_buff *skb;
- struct i596_rbd *v_next;
- dma_addr_t b_addr; /* This rbd addr from i596 view */
- unsigned char *v_data; /* Address from CPUs viewpoint */
+ /* hardware data */
+ unsigned short count;
+ unsigned short zero1;
+ u32 b_next;
+ u32 b_data; /* Address from i596 viewpoint */
+ unsigned short size;
+ unsigned short zero2;
+ /* driver data */
+ struct sk_buff *skb;
+ struct i596_rbd *v_next;
+ u32 b_addr; /* This rbd addr from i596 view */
+ unsigned char *v_data; /* Address from CPUs viewpoint */
/* Total 32 bytes... */
#ifdef __LP64__
u32 cache_pad[4];
struct i596_scb {
unsigned short status;
unsigned short command;
- dma_addr_t cmd;
- dma_addr_t rfd;
+ u32 cmd;
+ u32 rfd;
u32 crc_err;
u32 align_err;
u32 resource_err;
};
struct i596_iscp {
- u32 stat;
- dma_addr_t scb;
+ u32 stat;
+ u32 scb;
};
struct i596_scp {
- u32 sysbus;
- u32 pad;
- dma_addr_t iscp;
+ u32 sysbus;
+ u32 pad;
+ u32 iscp;
};
struct i596_dma {
for (i = 0, rbd = dma->rbds; i < rx_ring_size; i++, rbd++) {
dma_addr_t dma_addr;
- struct sk_buff *skb = netdev_alloc_skb(dev, PKT_BUF_SZ + 4);
+ struct sk_buff *skb;
+ skb = netdev_alloc_skb_ip_align(dev, PKT_BUF_SZ);
if (skb == NULL)
return -1;
- skb_reserve(skb, 2);
dma_addr = dma_map_single(dev->dev.parent, skb->data,
PKT_BUF_SZ, DMA_FROM_DEVICE);
rbd->v_next = rbd+1;
"%s: i82596 initialization successful\n",
dev->name));
- if (request_irq(dev->irq, &i596_interrupt, 0, "i82596", dev)) {
+ if (request_irq(dev->irq, i596_interrupt, 0, "i82596", dev)) {
printk(KERN_ERR "%s: IRQ %d not free\n", dev->name, dev->irq);
goto failed;
}
(dma_addr_t)SWAP32(rbd->b_data),
PKT_BUF_SZ, DMA_FROM_DEVICE);
/* Get fresh skbuff to replace filled one. */
- newskb = netdev_alloc_skb(dev, PKT_BUF_SZ + 4);
+ newskb = netdev_alloc_skb_ip_align(dev,
+ PKT_BUF_SZ);
if (newskb == NULL) {
skb = NULL; /* drop pkt */
goto memory_squeeze;
}
- skb_reserve(newskb, 2);
/* Pass up the skb already on the Rx ring. */
skb_put(skb, pkt_len);
rbd->b_data = SWAP32(dma_addr);
DMA_WBACK_INV(dev, rbd, sizeof(struct i596_rbd));
} else
- skb = netdev_alloc_skb(dev, pkt_len + 2);
+ skb = netdev_alloc_skb_ip_align(dev, pkt_len);
memory_squeeze:
if (skb == NULL) {
/* XXX tulip.c can defer packets here!! */
dma_sync_single_for_cpu(dev->dev.parent,
(dma_addr_t)SWAP32(rbd->b_data),
PKT_BUF_SZ, DMA_FROM_DEVICE);
- skb_reserve(skb, 2);
memcpy(skb_put(skb, pkt_len), rbd->v_data, pkt_len);
dma_sync_single_for_device(dev->dev.parent,
(dma_addr_t)SWAP32(rbd->b_data),
skb->len = pkt_len;
skb->protocol = eth_type_trans(skb, dev);
netif_rx(skb);
- dev->last_rx = jiffies;
dev->stats.rx_packets++;
dev->stats.rx_bytes += pkt_len;
}
lp->last_restart = dev->stats.tx_packets;
}
- dev->trans_start = jiffies;
+ dev->trans_start = jiffies; /* prevent tx timeout */
netif_wake_queue (dev);
}
struct tx_cmd *tx_cmd;
struct i596_tbd *tbd;
short length = skb->len;
- dev->trans_start = jiffies;
DEB(DEB_STARTTX, printk(KERN_DEBUG
"%s: i596_start_xmit(%x,%p) called\n",
if (length < ETH_ZLEN) {
if (skb_padto(skb, ETH_ZLEN))
- return 0;
+ return NETDEV_TX_OK;
length = ETH_ZLEN;
}
netif_start_queue(dev);
- return 0;
+ return NETDEV_TX_OK;
}
static void print_eth(unsigned char *add, char *str)
{
- int i;
-
- printk(KERN_DEBUG "i596 0x%p, ", add);
- for (i = 0; i < 6; i++)
- printk(" %02X", add[i + 6]);
- printk(" -->");
- for (i = 0; i < 6; i++)
- printk(" %02X", add[i]);
- printk(" %02X%02X, %s\n", add[12], add[13], str);
+ printk(KERN_DEBUG "i596 0x%p, %pM --> %pM %02X%02X, %s\n",
+ add, add + 6, add, add[12], add[13], str);
}
+static const struct net_device_ops i596_netdev_ops = {
+ .ndo_open = i596_open,
+ .ndo_stop = i596_close,
+ .ndo_start_xmit = i596_start_xmit,
+ .ndo_set_multicast_list = set_multicast_list,
+ .ndo_tx_timeout = i596_tx_timeout,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = i596_poll_controller,
+#endif
+};
static int __devinit i82596_probe(struct net_device *dev)
{
return -ENOMEM;
}
- /* The 82596-specific entries in the device structure. */
- dev->open = i596_open;
- dev->stop = i596_close;
- dev->hard_start_xmit = i596_start_xmit;
- dev->set_multicast_list = set_multicast_list;
- dev->tx_timeout = i596_tx_timeout;
+ dev->netdev_ops = &i596_netdev_ops;
dev->watchdog_timeo = TX_TIMEOUT;
-#ifdef CONFIG_NET_POLL_CONTROLLER
- dev->poll_controller = i596_poll_controller;
-#endif
memset(dma, 0, sizeof(struct i596_dma));
lp->dma = dma;
DMA_FREE(dev->dev.parent, sizeof(struct i596_dma),
(void *)dma, lp->dma_addr);
return i;
- };
+ }
- DEB(DEB_PROBE, printk(KERN_INFO "%s: 82596 at %#3lx,",
- dev->name, dev->base_addr));
- for (i = 0; i < 6; i++)
- DEB(DEB_PROBE, printk(" %2.2X", dev->dev_addr[i]));
- DEB(DEB_PROBE, printk(" IRQ %d.\n", dev->irq));
+ DEB(DEB_PROBE, printk(KERN_INFO "%s: 82596 at %#3lx, %pM IRQ %d.\n",
+ dev->name, dev->base_addr, dev->dev_addr,
+ dev->irq));
DEB(DEB_INIT, printk(KERN_INFO
"%s: dma at 0x%p (%d bytes), lp->scb at 0x%p\n",
dev->name, dma, (int)sizeof(struct i596_dma),
struct i596_dma *dma;
unsigned short status, ack_cmd = 0;
- if (dev == NULL) {
- printk(KERN_WARNING "%s: irq %d for unknown device.\n",
- __FUNCTION__, irq);
- return IRQ_NONE;
- }
-
lp = netdev_priv(dev);
dma = lp->dma;
DEB(DEB_INTS, printk(KERN_DEBUG
"%s: i596 interrupt, IRQ %d, status %4.4x.\n",
- dev->name, irq, status));
+ dev->name, dev->irq, status));
ack_cmd = status & 0xf000;
}
}
- cnt = dev->mc_count;
+ cnt = netdev_mc_count(dev);
if (cnt > MAX_MC_CNT) {
cnt = MAX_MC_CNT;
printk(KERN_NOTICE "%s: Only %d multicast addresses supported",
dev->name, cnt);
}
- if (dev->mc_count > 0) {
- struct dev_mc_list *dmi;
+ if (!netdev_mc_empty(dev)) {
+ struct netdev_hw_addr *ha;
unsigned char *cp;
struct mc_cmd *cmd;
cmd = &dma->mc_cmd;
cmd->cmd.command = SWAP16(CmdMulticastList);
- cmd->mc_cnt = SWAP16(dev->mc_count * 6);
+ cmd->mc_cnt = SWAP16(netdev_mc_count(dev) * 6);
cp = cmd->mc_addrs;
- for (dmi = dev->mc_list;
- cnt && dmi != NULL;
- dmi = dmi->next, cnt--, cp += 6) {
- memcpy(cp, dmi->dmi_addr, 6);
+ netdev_for_each_mc_addr(ha, dev) {
+ if (!cnt--)
+ break;
+ memcpy(cp, ha->addr, 6);
if (i596_debug > 1)
DEB(DEB_MULTI,
printk(KERN_DEBUG
- "%s: Adding address %02x:%02x:%02x:%02x:%02x:%02x\n",
- dev->name, cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]));
+ "%s: Adding address %pM\n",
+ dev->name, cp));
+ cp += 6;
}
DMA_WBACK_INV(dev, &dma->mc_cmd, sizeof(struct mc_cmd));
i596_add_cmd(dev, &cmd->cmd);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff