- Now survives unplugging/replugging cable.
Some code was taken from wavelan_cs.
-
+
Tested on a vintage Zenith Z-Note 433Lnp+. Probably broken on
anything else. Testers (and detailed bug reports) are welcome :-).
- Understand why some traffic patterns add a 1s latency...
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
+#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include <asm/dma.h>
-/* This include could be elsewhere, since it is not wireless specific */
-#include "wireless/i82593.h"
+#include <linux/i82593.h>
static char version[] __initdata = "znet.c:v1.02 9/23/94 becker@scyld.com\n";
struct znet_private {
int rx_dma, tx_dma;
- struct net_device_stats stats;
spinlock_t lock;
short sia_base, sia_size, io_size;
struct i82593_conf_block i593_init;
};
static int znet_open(struct net_device *dev);
-static int znet_send_packet(struct sk_buff *skb, struct net_device *dev);
-static irqreturn_t znet_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static netdev_tx_t znet_send_packet(struct sk_buff *skb,
+ struct net_device *dev);
+static irqreturn_t znet_interrupt(int irq, void *dev_id);
static void znet_rx(struct net_device *dev);
static int znet_close(struct net_device *dev);
-static struct net_device_stats *net_get_stats(struct net_device *dev);
static void hardware_init(struct net_device *dev);
static void update_stop_hit(short ioaddr, unsigned short rx_stop_offset);
static void znet_tx_timeout (struct net_device *dev);
/* Request needed resources */
static int znet_request_resources (struct net_device *dev)
{
- struct znet_private *znet = dev->priv;
- unsigned long flags;
-
- if (request_irq (dev->irq, &znet_interrupt, 0, "ZNet", dev))
+ struct znet_private *znet = netdev_priv(dev);
+
+ if (request_irq (dev->irq, znet_interrupt, 0, "ZNet", dev))
goto failed;
if (request_dma (znet->rx_dma, "ZNet rx"))
goto free_irq;
free_sia:
release_region (znet->sia_base, znet->sia_size);
free_tx_dma:
- flags = claim_dma_lock();
free_dma (znet->tx_dma);
- release_dma_lock (flags);
free_rx_dma:
- flags = claim_dma_lock();
free_dma (znet->rx_dma);
- release_dma_lock (flags);
free_irq:
free_irq (dev->irq, dev);
failed:
static void znet_release_resources (struct net_device *dev)
{
- struct znet_private *znet = dev->priv;
- unsigned long flags;
-
+ struct znet_private *znet = netdev_priv(dev);
+
release_region (znet->sia_base, znet->sia_size);
release_region (dev->base_addr, znet->io_size);
- flags = claim_dma_lock();
free_dma (znet->tx_dma);
free_dma (znet->rx_dma);
- release_dma_lock (flags);
free_irq (dev->irq, dev);
}
/* Keep the magical SIA stuff in a single function... */
static void znet_transceiver_power (struct net_device *dev, int on)
{
- struct znet_private *znet = dev->priv;
+ struct znet_private *znet = netdev_priv(dev);
unsigned char v;
/* Turn on/off the 82501 SIA, using zenith-specific magic. */
v = inb(znet->sia_base + 1) | 0x84;
else
v = inb(znet->sia_base + 1) & ~0x84;
-
+
outb(v, znet->sia_base+1); /* Turn on/off LAN power (bit 2). */
}
Also used from hardware_init. */
static void znet_set_multicast_list (struct net_device *dev)
{
- struct znet_private *znet = dev->priv;
+ struct znet_private *znet = netdev_priv(dev);
short ioaddr = dev->base_addr;
struct i82593_conf_block *cfblk = &znet->i593_init;
memset(cfblk, 0x00, sizeof(struct i82593_conf_block));
-
+
/* The configuration block. What an undocumented nightmare.
The first set of values are those suggested (without explanation)
for ethernet in the Intel 82586 databook. The rest appear to be
/* maz : Rewritten to take advantage of the wanvelan includes.
At least we have names, not just blind values */
-
+
/* Byte 0 */
cfblk->fifo_limit = 10; /* = 16 B rx and 80 B tx fifo thresholds */
cfblk->forgnesi = 0; /* 0=82C501, 1=AMD7992B compatibility */
cfblk->acloc = 1; /* Disable source addr insertion by i82593 */
cfblk->preamb_len = 2; /* 8 bytes preamble */
cfblk->loopback = 0; /* Loopback off */
-
+
/* Byte 3 */
cfblk->lin_prio = 0; /* Default priorities & backoff methods. */
cfblk->tbofstop = 0;
cfblk->exp_prio = 0;
cfblk->bof_met = 0;
-
+
/* Byte 4 */
cfblk->ifrm_spc = 6; /* 96 bit times interframe spacing */
-
+
/* Byte 5 */
cfblk->slottim_low = 0; /* 512 bit times slot time (low) */
-
+
/* Byte 6 */
cfblk->slottim_hi = 2; /* 512 bit times slot time (high) */
cfblk->max_retr = 15; /* 15 collisions retries */
-
+
/* Byte 7 */
cfblk->prmisc = ((dev->flags & IFF_PROMISC) ? 1 : 0); /* Promiscuous mode */
cfblk->bc_dis = 0; /* Enable broadcast reception */
cfblk->nocrc_ins = 0; /* i82593 generates CRC */
cfblk->crc_1632 = 0; /* 32-bit Autodin-II CRC */
cfblk->crs_cdt = 0; /* CD not to be interpreted as CS */
-
+
/* Byte 8 */
cfblk->cs_filter = 0; /* CS is recognized immediately */
cfblk->crs_src = 0; /* External carrier sense */
cfblk->cd_filter = 0; /* CD is recognized immediately */
-
+
/* Byte 9 */
cfblk->min_fr_len = ETH_ZLEN >> 2; /* Minimum frame length */
-
+
/* Byte A */
cfblk->lng_typ = 1; /* Type/length checks OFF */
cfblk->lng_fld = 1; /* Disable 802.3 length field check */
cfblk->tx_jabber = 0; /* Disable jabber jam sequence */
cfblk->hash_1 = 1; /* Use bits 0-5 in mc address hash */
cfblk->lbpkpol = 0; /* Loopback pin active high */
-
+
/* Byte B */
cfblk->fdx = 0; /* Disable full duplex operation */
-
+
/* Byte C */
cfblk->dummy_6 = 0x3f; /* all ones, Default multicast addresses & backoff. */
cfblk->mult_ia = 0; /* No multiple individual addresses */
cfblk->dis_bof = 0; /* Disable the backoff algorithm ?! */
-
+
/* Byte D */
cfblk->dummy_1 = 1; /* set to 1 */
cfblk->tx_ifs_retrig = 3; /* Hmm... Disabled */
- cfblk->mc_all = (dev->mc_list || (dev->flags&IFF_ALLMULTI));/* multicast all mode */
+ cfblk->mc_all = (!netdev_mc_empty(dev) ||
+ (dev->flags & IFF_ALLMULTI)); /* multicast all mode */
cfblk->rcv_mon = 0; /* Monitor mode disabled */
cfblk->frag_acpt = 0; /* Do not accept fragments */
cfblk->tstrttrs = 0; /* No start transmission threshold */
-
+
/* Byte E */
cfblk->fretx = 1; /* FIFO automatic retransmission */
cfblk->runt_eop = 0; /* drop "runt" packets */
printk ("%02X ", c[i]);
printk ("\n");
}
-
+
*znet->tx_cur++ = sizeof(struct i82593_conf_block);
memcpy(znet->tx_cur, cfblk, sizeof(struct i82593_conf_block));
znet->tx_cur += sizeof(struct i82593_conf_block)/2;
/* XXX FIXME maz : Add multicast addresses here, so having a
* multicast address configured isn't equal to IFF_ALLMULTI */
}
-\f
+
+static const struct net_device_ops znet_netdev_ops = {
+ .ndo_open = znet_open,
+ .ndo_stop = znet_close,
+ .ndo_start_xmit = znet_send_packet,
+ .ndo_set_multicast_list = znet_set_multicast_list,
+ .ndo_tx_timeout = znet_tx_timeout,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
/* The Z-Note probe is pretty easy. The NETIDBLK exists in the safe-to-probe
BIOS area. We just scan for the signature, and pull the vital parameters
out of the structure. */
if (!dev)
return -ENOMEM;
- SET_MODULE_OWNER (dev);
-
- znet = dev->priv;
+ znet = netdev_priv(dev);
netinfo = (struct netidblk *)p;
dev->base_addr = netinfo->iobase1;
dev->irq = netinfo->irq1;
- printk(KERN_INFO "%s: ZNET at %#3lx,", dev->name, dev->base_addr);
-
/* The station address is in the "netidblk" at 0x0f0000. */
for (i = 0; i < 6; i++)
- printk(" %2.2x", dev->dev_addr[i] = netinfo->netid[i]);
+ dev->dev_addr[i] = netinfo->netid[i];
- printk(", using IRQ %d DMA %d and %d.\n", dev->irq, netinfo->dma1,
- netinfo->dma2);
+ printk(KERN_INFO "%s: ZNET at %#3lx, %pM"
+ ", using IRQ %d DMA %d and %d.\n",
+ dev->name, dev->base_addr, dev->dev_addr,
+ dev->irq, netinfo->dma1, netinfo->dma2);
if (znet_debug > 1) {
printk(KERN_INFO "%s: vendor '%16.16s' IRQ1 %d IRQ2 %d DMA1 %d DMA2 %d.\n",
printk (KERN_WARNING "tx/rx crossing DMA frontiers, giving up\n");
goto free_tx;
}
-
+
znet->rx_end = znet->rx_start + RX_BUF_SIZE/2;
znet->tx_buf_len = TX_BUF_SIZE/2;
znet->tx_end = znet->tx_start + znet->tx_buf_len;
/* The ZNET-specific entries in the device structure. */
- dev->open = &znet_open;
- dev->hard_start_xmit = &znet_send_packet;
- dev->stop = &znet_close;
- dev->get_stats = net_get_stats;
- dev->set_multicast_list = &znet_set_multicast_list;
- dev->tx_timeout = znet_tx_timeout;
+ dev->netdev_ops = &znet_netdev_ops;
dev->watchdog_timeo = TX_TIMEOUT;
err = register_netdev(dev);
if (err)
return err;
}
-\f
+
static int znet_open(struct net_device *dev)
{
int ioaddr = dev->base_addr;
}
znet_transceiver_power (dev, 1);
-
+
/* According to the Crynwr driver we should wait 50 msec. for the
LAN clock to stabilize. My experiments indicates that the '593 can
be initialized immediately. The delay is probably needed for the
* all, even if the message is completly harmless on my
* setup. */
mdelay (50);
-
+
/* This follows the packet driver's lead, and checks for success. */
if (inb(ioaddr) != 0x10 && inb(ioaddr) != 0x00)
printk(KERN_WARNING "%s: Problem turning on the transceiver power.\n",
netif_wake_queue (dev);
}
-static int znet_send_packet(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t znet_send_packet(struct sk_buff *skb, struct net_device *dev)
{
int ioaddr = dev->base_addr;
- struct znet_private *znet = dev->priv;
+ struct znet_private *znet = netdev_priv(dev);
unsigned long flags;
short length = skb->len;
if (length < ETH_ZLEN) {
if (skb_padto(skb, ETH_ZLEN))
- return 0;
+ return NETDEV_TX_OK;
length = ETH_ZLEN;
}
-
+
netif_stop_queue (dev);
-
+
/* Check that the part hasn't reset itself, probably from suspend. */
outb(CR0_STATUS_0, ioaddr);
if (inw(ioaddr) == 0x0010 &&
unsigned char *buf = (void *)skb->data;
ushort *tx_link = znet->tx_cur - 1;
ushort rnd_len = (length + 1)>>1;
-
- znet->stats.tx_bytes+=length;
+
+ dev->stats.tx_bytes+=length;
if (znet->tx_cur >= znet->tx_end)
znet->tx_cur = znet->tx_start;
if (znet_debug > 4)
printk(KERN_DEBUG "%s: Transmitter queued, length %d.\n", dev->name, length);
}
- dev_kfree_skb(skb);
- return 0;
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
}
/* The ZNET interrupt handler. */
-static irqreturn_t znet_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+static irqreturn_t znet_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
- struct znet_private *znet = dev->priv;
+ struct znet_private *znet = netdev_priv(dev);
int ioaddr;
int boguscnt = 20;
int handled = 0;
- if (dev == NULL) {
- printk(KERN_WARNING "znet_interrupt(): IRQ %d for unknown device.\n", irq);
- return IRQ_NONE;
- }
-
spin_lock (&znet->lock);
-
+
ioaddr = dev->base_addr;
outb(CR0_STATUS_0, ioaddr);
tx_status = inw(ioaddr);
/* It's undocumented, but tx_status seems to match the i82586. */
if (tx_status & TX_OK) {
- znet->stats.tx_packets++;
- znet->stats.collisions += tx_status & TX_NCOL_MASK;
+ dev->stats.tx_packets++;
+ dev->stats.collisions += tx_status & TX_NCOL_MASK;
} else {
if (tx_status & (TX_LOST_CTS | TX_LOST_CRS))
- znet->stats.tx_carrier_errors++;
+ dev->stats.tx_carrier_errors++;
if (tx_status & TX_UND_RUN)
- znet->stats.tx_fifo_errors++;
+ dev->stats.tx_fifo_errors++;
if (!(tx_status & TX_HRT_BEAT))
- znet->stats.tx_heartbeat_errors++;
+ dev->stats.tx_heartbeat_errors++;
if (tx_status & TX_MAX_COL)
- znet->stats.tx_aborted_errors++;
+ dev->stats.tx_aborted_errors++;
/* ...and the catch-all. */
if ((tx_status | (TX_LOST_CRS | TX_LOST_CTS | TX_UND_RUN | TX_HRT_BEAT | TX_MAX_COL)) != (TX_LOST_CRS | TX_LOST_CTS | TX_UND_RUN | TX_HRT_BEAT | TX_MAX_COL))
- znet->stats.tx_errors++;
+ dev->stats.tx_errors++;
/* Transceiver may be stuck if cable
* was removed while emiting a
* packet. Flip it off, then on to
* reset it. This is very empirical,
* but it seems to work. */
-
+
znet_transceiver_power (dev, 0);
znet_transceiver_power (dev, 1);
}
} while (boguscnt--);
spin_unlock (&znet->lock);
-
+
return IRQ_RETVAL(handled);
}
static void znet_rx(struct net_device *dev)
{
- struct znet_private *znet = dev->priv;
+ struct znet_private *znet = netdev_priv(dev);
int ioaddr = dev->base_addr;
int boguscount = 1;
short next_frame_end_offset = 0; /* Offset of next frame start. */
the same area of the backwards links we now have. This allows us to
pass packets to the upper layers in the order they were received --
important for fast-path sequential operations. */
- while (znet->rx_start + cur_frame_end_offset != znet->rx_cur
- && ++boguscount < 5) {
+ while (znet->rx_start + cur_frame_end_offset != znet->rx_cur &&
+ ++boguscount < 5) {
unsigned short hi_cnt, lo_cnt, hi_status, lo_status;
int count, status;
ushort *this_rfp_ptr = znet->rx_start + next_frame_end_offset;
int status = this_rfp_ptr[-4];
int pkt_len = this_rfp_ptr[-2];
-
+
if (znet_debug > 5)
printk(KERN_DEBUG "Looking at trailer ending at %04x status %04x length %03x"
" next %04x.\n", next_frame_end_offset<<1, status, pkt_len,
this_rfp_ptr[-3]<<1);
/* Once again we must assume that the i82586 docs apply. */
if ( ! (status & RX_RCV_OK)) { /* There was an error. */
- znet->stats.rx_errors++;
- if (status & RX_CRC_ERR) znet->stats.rx_crc_errors++;
- if (status & RX_ALG_ERR) znet->stats.rx_frame_errors++;
+ dev->stats.rx_errors++;
+ if (status & RX_CRC_ERR) dev->stats.rx_crc_errors++;
+ if (status & RX_ALG_ERR) dev->stats.rx_frame_errors++;
#if 0
- if (status & 0x0200) znet->stats.rx_over_errors++; /* Wrong. */
- if (status & 0x0100) znet->stats.rx_fifo_errors++;
+ if (status & 0x0200) dev->stats.rx_over_errors++; /* Wrong. */
+ if (status & 0x0100) dev->stats.rx_fifo_errors++;
#else
/* maz : Wild guess... */
- if (status & RX_OVRRUN) znet->stats.rx_over_errors++;
+ if (status & RX_OVRRUN) dev->stats.rx_over_errors++;
#endif
- if (status & RX_SRT_FRM) znet->stats.rx_length_errors++;
+ if (status & RX_SRT_FRM) dev->stats.rx_length_errors++;
} else if (pkt_len > 1536) {
- znet->stats.rx_length_errors++;
+ dev->stats.rx_length_errors++;
} else {
/* Malloc up new buffer. */
struct sk_buff *skb;
if (skb == NULL) {
if (znet_debug)
printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
- znet->stats.rx_dropped++;
+ dev->stats.rx_dropped++;
break;
}
- skb->dev = dev;
if (&znet->rx_cur[(pkt_len+1)>>1] > znet->rx_end) {
int semi_cnt = (znet->rx_end - znet->rx_cur)<<1;
}
skb->protocol=eth_type_trans(skb,dev);
netif_rx(skb);
- dev->last_rx = jiffies;
- znet->stats.rx_packets++;
- znet->stats.rx_bytes += pkt_len;
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += pkt_len;
}
znet->rx_cur = this_rfp_ptr;
if (znet->rx_cur >= znet->rx_end)
printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
/* Turn off transceiver power. */
znet_transceiver_power (dev, 0);
-
- znet_release_resources (dev);
-
- return 0;
-}
-/* Get the current statistics. This may be called with the card open or
- closed. */
-static struct net_device_stats *net_get_stats(struct net_device *dev)
-{
- struct znet_private *znet = dev->priv;
+ znet_release_resources (dev);
- return &znet->stats;
+ return 0;
}
static void show_dma(struct net_device *dev)
{
short ioaddr = dev->base_addr;
unsigned char stat = inb (ioaddr);
- struct znet_private *znet = dev->priv;
+ struct znet_private *znet = netdev_priv(dev);
unsigned long flags;
short dma_port = ((znet->tx_dma&3)<<2) + IO_DMA2_BASE;
unsigned addr = inb(dma_port);
addr |= inb(dma_port) << 8;
residue = get_dma_residue(znet->tx_dma);
-
+
if (znet_debug > 1) {
flags=claim_dma_lock();
printk(KERN_DEBUG "Stat:%02x Addr: %04x cnt:%3x\n",
{
unsigned long flags;
short ioaddr = dev->base_addr;
- struct znet_private *znet = dev->priv;
+ struct znet_private *znet = netdev_priv(dev);
znet->rx_cur = znet->rx_start;
znet->tx_cur = znet->tx_start;
set_dma_count(znet->tx_dma, znet->tx_buf_len<<1);
enable_dma(znet->tx_dma);
release_dma_lock(flags);
-
+
if (znet_debug > 1)
printk(KERN_DEBUG "%s: Initializing the i82593, rx buf %p tx buf %p\n",
dev->name, znet->rx_start,znet->tx_start);
static __exit void znet_cleanup (void)
{
if (znet_dev) {
- struct znet_private *znet = znet_dev->priv;
+ struct znet_private *znet = netdev_priv(znet_dev);
unregister_netdev (znet_dev);
kfree (znet->rx_start);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff