+++ /dev/null
-/* fmv18x.c: A network device driver for the Fujitsu FMV-181/182/183/184.
-
- Original: at1700.c (1993-94 by Donald Becker).
- Copyright 1993 United States Government as represented by the
- Director, National Security Agency.
- The author may be reached as becker@scyld.com, or C/O
- Scyld Computing Corporation
- 410 Severn Ave., Suite 210
- Annapolis MD 21403
-
- Modified by Yutaka TAMIYA (tamy@flab.fujitsu.co.jp)
- Copyright 1994 Fujitsu Laboratories Ltd.
- Special thanks to:
- Masayoshi UTAKA (utaka@ace.yk.fujitsu.co.jp)
- for testing this driver.
- H. NEGISHI (agy, negishi@sun45.psd.cs.fujitsu.co.jp)
- for suggestion of some program modification.
- Masahiro SEKIGUCHI <seki@sysrap.cs.fujitsu.co.jp>
- for suggestion of some program modification.
- Kazutoshi MORIOKA (morioka@aurora.oaks.cs.fujitsu.co.jp)
- for testing this driver.
-
- This software may be used and distributed according to the terms
- of the GNU General Public License, incorporated herein by reference.
-
- This is a device driver for the Fujitsu FMV-181/182/183/184, which
- is a straight-forward Fujitsu MB86965 implementation.
-
- Sources:
- at1700.c
- The Fujitsu MB86965 datasheet.
- The Fujitsu FMV-181/182 user's guide
-*/
-
-static const char version[] =
- "fmv18x.c:v2.2.0 09/24/98 Yutaka TAMIYA (tamy@flab.fujitsu.co.jp)\n";
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/spinlock.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/delay.h>
-#include <linux/bitops.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-
-#define DRV_NAME "fmv18x"
-
-static unsigned fmv18x_probe_list[] __initdata = {
- 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x300, 0x340, 0
-};
-
-/* use 0 for production, 1 for verification, >2 for debug */
-#ifndef NET_DEBUG
-#define NET_DEBUG 1
-#endif
-static unsigned int net_debug = NET_DEBUG;
-
-typedef unsigned char uchar;
-
-/* Information that need to be kept for each board. */
-struct net_local {
- struct net_device_stats stats;
- long open_time; /* Useless example local info. */
- uint tx_started:1; /* Number of packet on the Tx queue. */
- uint tx_queue_ready:1; /* Tx queue is ready to be sent. */
- uint rx_started:1; /* Packets are Rxing. */
- uchar tx_queue; /* Number of packet on the Tx queue. */
- ushort tx_queue_len; /* Current length of the Tx queue. */
- spinlock_t lock;
-};
-
-
-/* Offsets from the base address. */
-#define STATUS 0
-#define TX_STATUS 0
-#define RX_STATUS 1
-#define TX_INTR 2 /* Bit-mapped interrupt enable registers. */
-#define RX_INTR 3
-#define TX_MODE 4
-#define RX_MODE 5
-#define CONFIG_0 6 /* Misc. configuration settings. */
-#define CONFIG_1 7
-/* Run-time register bank 2 definitions. */
-#define DATAPORT 8 /* Word-wide DMA or programmed-I/O dataport. */
-#define TX_START 10
-#define COL16CNTL 11 /* Controll Reg for 16 collisions */
-#define MODE13 13
-/* Fujitsu FMV-18x Card Configuration */
-#define FJ_STATUS0 0x10
-#define FJ_STATUS1 0x11
-#define FJ_CONFIG0 0x12
-#define FJ_CONFIG1 0x13
-#define FJ_MACADDR 0x14 /* 0x14 - 0x19 */
-#define FJ_BUFCNTL 0x1A
-#define FJ_BUFDATA 0x1C
-#define FMV18X_IO_EXTENT 32
-
-/* Index to functions, as function prototypes. */
-
-static int fmv18x_probe1(struct net_device *dev, short ioaddr);
-static int net_open(struct net_device *dev);
-static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
-static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
-static void net_rx(struct net_device *dev);
-static void net_timeout(struct net_device *dev);
-static int net_close(struct net_device *dev);
-static struct net_device_stats *net_get_stats(struct net_device *dev);
-static void set_multicast_list(struct net_device *dev);
-
-\f
-/* Check for a network adaptor of this type, and return '0' iff one exists.
- If dev->base_addr == 0, probe all likely locations.
- If dev->base_addr == 1, always return failure.
- If dev->base_addr == 2, allocate space for the device and return success
- (detachable devices only).
- */
-
-static int io = 0x220;
-static int irq;
-
-struct net_device * __init fmv18x_probe(int unit)
-{
- struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
- unsigned *port;
- int err = 0;
-
- if (!dev)
- return ERR_PTR(-ENODEV);
-
- if (unit >= 0) {
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
- io = dev->base_addr;
- irq = dev->irq;
- }
-
- SET_MODULE_OWNER(dev);
-
- if (io > 0x1ff) { /* Check a single specified location. */
- err = fmv18x_probe1(dev, io);
- } else if (io != 0) { /* Don't probe at all. */
- err = -ENXIO;
- } else {
- for (port = fmv18x_probe_list; *port; port++)
- if (fmv18x_probe1(dev, *port) == 0)
- break;
- if (!*port)
- err = -ENODEV;
- }
- if (err)
- goto out;
- err = register_netdev(dev);
- if (err)
- goto out1;
- return dev;
-out1:
- free_irq(dev->irq, dev);
- release_region(dev->base_addr, FMV18X_IO_EXTENT);
-out:
- free_netdev(dev);
- return ERR_PTR(err);
-}
-
-/* The Fujitsu datasheet suggests that the NIC be probed for by checking its
- "signature", the default bit pattern after a reset. This *doesn't* work --
- there is no way to reset the bus interface without a complete power-cycle!
-
- It turns out that ATI came to the same conclusion I did: the only thing
- that can be done is checking a few bits and then diving right into MAC
- address check. */
-
-static int __init fmv18x_probe1(struct net_device *dev, short ioaddr)
-{
- char irqmap[4] = {3, 7, 10, 15};
- char irqmap_pnp[8] = {3, 4, 5, 7, 9, 10, 11, 15};
- unsigned int i, retval;
- struct net_local *lp;
-
- /* Resetting the chip doesn't reset the ISA interface, so don't bother.
- That means we have to be careful with the register values we probe for.
- */
-
- if (!request_region(ioaddr, FMV18X_IO_EXTENT, DRV_NAME))
- return -EBUSY;
-
- dev->irq = irq;
- dev->base_addr = ioaddr;
-
- /* Check I/O address configuration and Fujitsu vendor code */
- if (inb(ioaddr+FJ_MACADDR ) != 0x00
- || inb(ioaddr+FJ_MACADDR+1) != 0x00
- || inb(ioaddr+FJ_MACADDR+2) != 0x0e) {
- retval = -ENODEV;
- goto out;
- }
-
- /* Check PnP mode for FMV-183/184/183A/184A. */
- /* This PnP routine is very poor. IO and IRQ should be known. */
- if (inb(ioaddr + FJ_STATUS1) & 0x20) {
- for (i = 0; i < 8; i++) {
- if (dev->irq == irqmap_pnp[i])
- break;
- }
- if (i == 8) {
- retval = -ENODEV;
- goto out;
- }
- } else {
- if (fmv18x_probe_list[inb(ioaddr + FJ_CONFIG0) & 0x07] != ioaddr)
- return -ENODEV;
- dev->irq = irqmap[(inb(ioaddr + FJ_CONFIG0)>>6) & 0x03];
- }
-
- /* Snarf the interrupt vector now. */
- retval = request_irq(dev->irq, &net_interrupt, 0, DRV_NAME, dev);
- if (retval) {
- printk ("FMV-18x found at %#3x, but it's unusable due to a conflict on"
- "IRQ %d.\n", ioaddr, dev->irq);
- goto out;
- }
-
- printk("%s: FMV-18x found at %#3x, IRQ %d, address ", dev->name,
- ioaddr, dev->irq);
-
- for(i = 0; i < 6; i++) {
- unsigned char val = inb(ioaddr + FJ_MACADDR + i);
- printk("%02x", val);
- dev->dev_addr[i] = val;
- }
-
- /* "FJ_STATUS0" 12 bit 0x0400 means use regular 100 ohm 10baseT signals,
- rather than 150 ohm shielded twisted pair compensation.
- 0x0000 == auto-sense the interface
- 0x0800 == use TP interface
- 0x1800 == use coax interface
- */
- {
- const char *porttype[] = {"auto-sense", "10baseT", "auto-sense", "10base2/5"};
- ushort setup_value = inb(ioaddr + FJ_STATUS0);
-
- switch( setup_value & 0x07 ){
- case 0x01 /* 10base5 */:
- case 0x02 /* 10base2 */: dev->if_port = 0x18; break;
- case 0x04 /* 10baseT */: dev->if_port = 0x08; break;
- default /* auto-sense*/: dev->if_port = 0x00; break;
- }
- printk(" %s interface.\n", porttype[(dev->if_port>>3) & 3]);
- }
-
- /* Initialize LAN Controller and LAN Card */
- outb(0xda, ioaddr + CONFIG_0); /* Initialize LAN Controller */
- outb(0x00, ioaddr + CONFIG_1); /* Stand by mode */
- outb(0x00, ioaddr + FJ_CONFIG1); /* Disable IRQ of LAN Card */
- outb(0x00, ioaddr + FJ_BUFCNTL); /* Reset ? I'm not sure (TAMIYA) */
-
- /* wait for a while */
- udelay(200);
-
- /* Set the station address in bank zero. */
- outb(0x00, ioaddr + CONFIG_1);
- for (i = 0; i < 6; i++)
- outb(dev->dev_addr[i], ioaddr + 8 + i);
-
- /* Switch to bank 1 and set the multicast table to accept none. */
- outb(0x04, ioaddr + CONFIG_1);
- for (i = 0; i < 8; i++)
- outb(0x00, ioaddr + 8 + i);
-
- /* Switch to bank 2 and lock our I/O address. */
- outb(0x08, ioaddr + CONFIG_1);
- outb(dev->if_port, ioaddr + MODE13);
- outb(0x00, ioaddr + COL16CNTL);
-
- if (net_debug)
- printk(version);
-
- /* Initialize the device structure. */
- dev->priv = kmalloc(sizeof(struct net_local), GFP_KERNEL);
- if (!dev->priv) {
- retval = -ENOMEM;
- goto out_irq;
- }
- memset(dev->priv, 0, sizeof(struct net_local));
- lp = dev->priv;
- spin_lock_init(&lp->lock);
-
- dev->open = net_open;
- dev->stop = net_close;
- dev->hard_start_xmit = net_send_packet;
- dev->tx_timeout = net_timeout;
- dev->watchdog_timeo = HZ/10;
- dev->get_stats = net_get_stats;
- dev->set_multicast_list = set_multicast_list;
- return 0;
-
-out_irq:
- free_irq(dev->irq, dev);
-out:
- release_region(ioaddr, FMV18X_IO_EXTENT);
- return retval;
-}
-\f
-
-static int net_open(struct net_device *dev)
-{
- struct net_local *lp = dev->priv;
- int ioaddr = dev->base_addr;
-
- /* Set the configuration register 0 to 32K 100ns. byte-wide memory,
- 16 bit bus access, and two 4K Tx, enable the Rx and Tx. */
- outb(0x5a, ioaddr + CONFIG_0);
-
- /* Powerup and switch to register bank 2 for the run-time registers. */
- outb(0xe8, ioaddr + CONFIG_1);
-
- lp->tx_started = 0;
- lp->tx_queue_ready = 1;
- lp->rx_started = 0;
- lp->tx_queue = 0;
- lp->tx_queue_len = 0;
-
- /* Clear Tx and Rx Status */
- outb(0xff, ioaddr + TX_STATUS);
- outb(0xff, ioaddr + RX_STATUS);
- lp->open_time = jiffies;
-
- netif_start_queue(dev);
-
- /* Enable the IRQ of the LAN Card */
- outb(0x80, ioaddr + FJ_CONFIG1);
-
- /* Enable both Tx and Rx interrupts */
- outw(0x8182, ioaddr+TX_INTR);
-
- return 0;
-}
-
-static void net_timeout(struct net_device *dev)
-{
- struct net_local *lp = dev->priv;
- int ioaddr = dev->base_addr;
- unsigned long flags;
-
-
- printk(KERN_WARNING "%s: transmit timed out with status %04x, %s?\n", dev->name,
- htons(inw(ioaddr + TX_STATUS)),
- inb(ioaddr + TX_STATUS) & 0x80
- ? "IRQ conflict" : "network cable problem");
- printk(KERN_WARNING "%s: timeout registers: %04x %04x %04x %04x %04x %04x %04x %04x.\n",
- dev->name, htons(inw(ioaddr + 0)),
- htons(inw(ioaddr + 2)), htons(inw(ioaddr + 4)),
- htons(inw(ioaddr + 6)), htons(inw(ioaddr + 8)),
- htons(inw(ioaddr +10)), htons(inw(ioaddr +12)),
- htons(inw(ioaddr +14)));
- printk(KERN_WARNING "eth card: %04x %04x\n",
- htons(inw(ioaddr+FJ_STATUS0)),
- htons(inw(ioaddr+FJ_CONFIG0)));
- lp->stats.tx_errors++;
- /* ToDo: We should try to restart the adaptor... */
- spin_lock_irqsave(&lp->lock, flags);
-
- /* Initialize LAN Controller and LAN Card */
- outb(0xda, ioaddr + CONFIG_0); /* Initialize LAN Controller */
- outb(0x00, ioaddr + CONFIG_1); /* Stand by mode */
- outb(0x00, ioaddr + FJ_CONFIG1); /* Disable IRQ of LAN Card */
- outb(0x00, ioaddr + FJ_BUFCNTL); /* Reset ? I'm not sure */
- net_open(dev);
- spin_unlock_irqrestore(&lp->lock, flags);
-
- netif_wake_queue(dev);
-}
-
-static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
-{
- struct net_local *lp = dev->priv;
- int ioaddr = dev->base_addr;
- short length = skb->len;
- unsigned char *buf;
- unsigned long flags;
-
- /* Block a transmit from overlapping. */
-
- if (length > ETH_FRAME_LEN) {
- if (net_debug)
- printk("%s: Attempting to send a large packet (%d bytes).\n",
- dev->name, length);
- return 1;
- }
-
- if (length < ETH_ZLEN) {
- skb = skb_padto(skb, ETH_ZLEN);
- if (skb == NULL)
- return 0;
- length = ETH_ZLEN;
- }
- buf = skb->data;
-
- if (net_debug > 4)
- printk("%s: Transmitting a packet of length %lu.\n", dev->name,
- (unsigned long)skb->len);
- /* We may not start transmitting unless we finish transferring
- a packet into the Tx queue. During executing the following
- codes we possibly catch a Tx interrupt. Thus we flag off
- tx_queue_ready, so that we prevent the interrupt routine
- (net_interrupt) to start transmitting. */
- spin_lock_irqsave(&lp->lock, flags);
- lp->tx_queue_ready = 0;
- {
- outw(length, ioaddr + DATAPORT);
- outsw(ioaddr + DATAPORT, buf, (length + 1) >> 1);
- lp->tx_queue++;
- lp->tx_queue_len += length + 2;
- }
- lp->tx_queue_ready = 1;
- spin_unlock_irqrestore(&lp->lock, flags);
-
- if (lp->tx_started == 0) {
- /* If the Tx is idle, always trigger a transmit. */
- outb(0x80 | lp->tx_queue, ioaddr + TX_START);
- lp->tx_queue = 0;
- lp->tx_queue_len = 0;
- dev->trans_start = jiffies;
- lp->tx_started = 1;
- } else if (lp->tx_queue_len >= 4096 - 1502) /* No room for a packet */
- netif_stop_queue(dev);
-
- dev_kfree_skb(skb);
- return 0;
-}
-\f
-/* The typical workload of the driver:
- Handle the network interface interrupts. */
-static irqreturn_t
-net_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct net_device *dev = dev_id;
- struct net_local *lp;
- int ioaddr, status;
-
- ioaddr = dev->base_addr;
- lp = dev->priv;
- status = inw(ioaddr + TX_STATUS);
- outw(status, ioaddr + TX_STATUS);
-
- if (net_debug > 4)
- printk("%s: Interrupt with status %04x.\n", dev->name, status);
- if (lp->rx_started == 0 &&
- (status & 0xff00 || (inb(ioaddr + RX_MODE) & 0x40) == 0)) {
- /* Got a packet(s).
- We cannot execute net_rx more than once at the same time for
- the same device. During executing net_rx, we possibly catch a
- Tx interrupt. Thus we flag on rx_started, so that we prevent
- the interrupt routine (net_interrupt) to dive into net_rx
- again. */
- lp->rx_started = 1;
- outb(0x00, ioaddr + RX_INTR); /* Disable RX intr. */
- net_rx(dev);
- outb(0x81, ioaddr + RX_INTR); /* Enable RX intr. */
- lp->rx_started = 0;
- }
- if (status & 0x00ff) {
- if (status & 0x02) {
- /* More than 16 collisions occurred */
- if (net_debug > 4)
- printk("%s: 16 Collision occur during Txing.\n", dev->name);
- /* Cancel sending a packet. */
- outb(0x03, ioaddr + COL16CNTL);
- lp->stats.collisions++;
- }
- if (status & 0x82) {
- spin_lock(&lp->lock);
- lp->stats.tx_packets++;
- if (lp->tx_queue && lp->tx_queue_ready) {
- outb(0x80 | lp->tx_queue, ioaddr + TX_START);
- lp->tx_queue = 0;
- lp->tx_queue_len = 0;
- dev->trans_start = jiffies;
- netif_wake_queue(dev); /* Inform upper layers. */
- } else {
- lp->tx_started = 0;
- netif_wake_queue(dev); /* Inform upper layers. */
- }
- spin_unlock(&lp->lock);
- }
- }
- return IRQ_RETVAL(status);
-}
-
-/* We have a good packet(s), get it/them out of the buffers. */
-static void net_rx(struct net_device *dev)
-{
- struct net_local *lp = dev->priv;
- int ioaddr = dev->base_addr;
- int boguscount = 5;
-
- while ((inb(ioaddr + RX_MODE) & 0x40) == 0) {
- /* Clear PKT_RDY bit: by agy 19940922 */
- /* outb(0x80, ioaddr + RX_STATUS); */
- ushort status = inw(ioaddr + DATAPORT);
-
- if (net_debug > 4)
- printk("%s: Rxing packet mode %02x status %04x.\n",
- dev->name, inb(ioaddr + RX_MODE), status);
-#ifndef final_version
- if (status == 0) {
- outb(0x05, ioaddr + 14);
- break;
- }
-#endif
-
- if ((status & 0xF0) != 0x20) { /* There was an error. */
- lp->stats.rx_errors++;
- if (status & 0x08) lp->stats.rx_length_errors++;
- if (status & 0x04) lp->stats.rx_frame_errors++;
- if (status & 0x02) lp->stats.rx_crc_errors++;
- if (status & 0x01) lp->stats.rx_over_errors++;
- } else {
- ushort pkt_len = inw(ioaddr + DATAPORT);
- /* Malloc up new buffer. */
- struct sk_buff *skb;
-
- if (pkt_len > 1550) {
- printk("%s: The FMV-18x claimed a very large packet, size %d.\n",
- dev->name, pkt_len);
- outb(0x05, ioaddr + 14);
- lp->stats.rx_errors++;
- break;
- }
- skb = dev_alloc_skb(pkt_len+3);
- if (skb == NULL) {
- printk("%s: Memory squeeze, dropping packet (len %d).\n",
- dev->name, pkt_len);
- outb(0x05, ioaddr + 14);
- lp->stats.rx_dropped++;
- break;
- }
- skb->dev = dev;
- skb_reserve(skb,2);
-
- insw(ioaddr + DATAPORT, skb_put(skb,pkt_len), (pkt_len + 1) >> 1);
-
- if (net_debug > 5) {
- int i;
- printk("%s: Rxed packet of length %d: ", dev->name, pkt_len);
- for (i = 0; i < 14; i++)
- printk(" %02x", skb->data[i]);
- printk(".\n");
- }
-
- skb->protocol=eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->last_rx = jiffies;
- lp->stats.rx_packets++;
- lp->stats.rx_bytes += pkt_len;
- }
- if (--boguscount <= 0)
- break;
- }
-
- /* If any worth-while packets have been received, dev_rint()
- has done a mark_bh(NET_BH) for us and will work on them
- when we get to the bottom-half routine. */
- {
- int i;
- for (i = 0; i < 20; i++) {
- if ((inb(ioaddr + RX_MODE) & 0x40) == 0x40)
- break;
- (void)inw(ioaddr + DATAPORT); /* dummy status read */
- outb(0x05, ioaddr + 14);
- }
-
- if (net_debug > 5 && i > 0)
- printk("%s: Exint Rx packet with mode %02x after %d ticks.\n",
- dev->name, inb(ioaddr + RX_MODE), i);
- }
-
- return;
-}
-
-/* The inverse routine to net_open(). */
-static int net_close(struct net_device *dev)
-{
- int ioaddr = dev->base_addr;
-
- ((struct net_local *)dev->priv)->open_time = 0;
-
- netif_stop_queue(dev);
-
- /* Set configuration register 0 to disable Tx and Rx. */
- outb(0xda, ioaddr + CONFIG_0);
-
- /* Update the statistics -- ToDo. */
-
- /* Power-down the chip. Green, green, green! */
- outb(0x00, ioaddr + CONFIG_1);
-
- /* Set the ethernet adaptor disable IRQ */
- outb(0x00, ioaddr + FJ_CONFIG1);
-
- 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 net_local *lp = dev->priv;
- return &lp->stats;
-}
-
-/* Set or clear the multicast filter for this adaptor.
- num_addrs == -1 Promiscuous mode, receive all packets
- num_addrs == 0 Normal mode, clear multicast list
- num_addrs > 0 Multicast mode, receive normal and MC packets, and do
- best-effort filtering.
- */
-
-static void set_multicast_list(struct net_device *dev)
-{
- short ioaddr = dev->base_addr;
- if (dev->mc_count || dev->flags&(IFF_PROMISC|IFF_ALLMULTI))
- {
- /*
- * We must make the kernel realise we had to move
- * into promisc mode or we start all out war on
- * the cable. - AC
- */
- dev->flags|=IFF_PROMISC;
-
- outb(3, ioaddr + RX_MODE); /* Enable promiscuous mode */
- }
- else
- outb(2, ioaddr + RX_MODE); /* Disable promiscuous, use normal mode */
-}
-
-#ifdef MODULE
-static struct net_device *dev_fmv18x;
-
-MODULE_PARM(io, "i");
-MODULE_PARM(irq, "i");
-MODULE_PARM(net_debug, "i");
-MODULE_PARM_DESC(io, "FMV-18X I/O address");
-MODULE_PARM_DESC(irq, "FMV-18X IRQ number");
-MODULE_PARM_DESC(net_debug, "FMV-18X debug level (0-1,5-6)");
-MODULE_LICENSE("GPL");
-
-int init_module(void)
-{
- if (io == 0)
- printk("fmv18x: You should not use auto-probing with insmod!\n");
- dev_fmv18x = fmv18x_probe(-1);
- if (IS_ERR(dev_fmv18x))
- return PTR_ERR(dev_fmv18x);
- return 0;
-}
-
-void
-cleanup_module(void)
-{
- unregister_netdev(dev_fmv18x);
- free_irq(dev_fmv18x->irq, dev_fmv18x);
- release_region(dev_fmv18x->base_addr, FMV18X_IO_EXTENT);
- free_netdev(dev_fmv18x);
-}
-#endif /* MODULE */
-\f
-/*
- * Local variables:
- * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c fmv18x.c"
- * version-control: t
- * kept-new-versions: 5
- * tab-width: 4
- * c-indent-level: 4
- * End:
- */
+++ /dev/null
-/*-
- * Copyright (C) 1994 by PJD Weichmann & SWS Bern, Switzerland
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- * Module : sk_g16.c
- *
- * Version : $Revision: 1.1 $
- *
- * Author : Patrick J.D. Weichmann
- *
- * Date Created : 94/05/26
- * Last Updated : $Date: 1994/06/30 16:25:15 $
- *
- * Description : Schneider & Koch G16 Ethernet Device Driver for
- * Linux Kernel >= 1.1.22
- * Update History :
- * Paul Gortmaker, 03/97: Fix for v2.1.x to use read{b,w}
- * write{b,w} and memcpy -> memcpy_{to,from}io
- *
- * Jeff Garzik, 06/2000, Modularize
- *
--*/
-
-static const char rcsid[] = "$Id: sk_g16.c,v 1.1 1994/06/30 16:25:15 root Exp $";
-
-/*
- * The Schneider & Koch (SK) G16 Network device driver is based
- * on the 'ni6510' driver from Michael Hipp which can be found at
- * ftp://sunsite.unc.edu/pub/Linux/system/Network/drivers/nidrivers.tar.gz
- *
- * Sources: 1) ni6510.c by M. Hipp
- * 2) depca.c by D.C. Davies
- * 3) skeleton.c by D. Becker
- * 4) Am7990 Local Area Network Controller for Ethernet (LANCE),
- * AMD, Pub. #05698, June 1989
- *
- * Many Thanks for helping me to get things working to:
- *
- * A. Cox (A.Cox@swansea.ac.uk)
- * M. Hipp (mhipp@student.uni-tuebingen.de)
- * R. Bolz (Schneider & Koch, Germany)
- *
- * To Do:
- * - Support of SK_G8 and other SK Network Cards.
- * - Autoset memory mapped RAM. Check for free memory and then
- * configure RAM correctly.
- * - SK_close should really set card in to initial state.
- * - Test if IRQ 3 is not switched off. Use autoirq() functionality.
- * (as in /drivers/net/skeleton.c)
- * - Implement Multicast addressing. At minimum something like
- * in depca.c.
- * - Redo the statistics part.
- * - Try to find out if the board is in 8 Bit or 16 Bit slot.
- * If in 8 Bit mode don't use IRQ 11.
- * - (Try to make it slightly faster.)
- * - Power management support
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/fcntl.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/bitops.h>
-
-#include <asm/system.h>
-#include <asm/io.h>
-
-#include "sk_g16.h"
-
-/*
- * Schneider & Koch Card Definitions
- * =================================
- */
-
-#define SK_NAME "SK_G16"
-
-/*
- * SK_G16 Configuration
- * --------------------
- */
-
-/*
- * Abbreviations
- * -------------
- *
- * RAM - used for the 16KB shared memory
- * Boot_ROM, ROM - are used for referencing the BootEPROM
- *
- * SK_BOOT_ROM and SK_ADDR are symbolic constants used to configure
- * the behaviour of the driver and the SK_G16.
- *
- * ! See sk_g16.install on how to install and configure the driver !
- *
- * SK_BOOT_ROM defines if the Boot_ROM should be switched off or not.
- *
- * SK_ADDR defines the address where the RAM will be mapped into the real
- * host memory.
- * valid addresses are from 0xa0000 to 0xfc000 in 16Kbyte steps.
- */
-
-#define SK_BOOT_ROM 1 /* 1=BootROM on 0=off */
-
-#define SK_ADDR 0xcc000
-
-/*
- * In POS3 are bits A14-A19 of the address bus. These bits can be set
- * to choose the RAM address. That's why we only can choose the RAM address
- * in 16KB steps.
- */
-
-#define POS_ADDR (rom_addr>>14) /* Do not change this line */
-
-/*
- * SK_G16 I/O PORT's + IRQ's + Boot_ROM locations
- * ----------------------------------------------
- */
-
-/*
- * As nearly every card has also SK_G16 a specified I/O Port region and
- * only a few possible IRQ's.
- * In the Installation Guide from Schneider & Koch is listed a possible
- * Interrupt IRQ2. IRQ2 is always IRQ9 in boards with two cascaded interrupt
- * controllers. So we use in SK_IRQS IRQ9.
- */
-
-/* Don't touch any of the following #defines. */
-
-#define SK_IO_PORTS { 0x100, 0x180, 0x208, 0x220, 0x288, 0x320, 0x328, 0x390, 0 }
-
-#define SK_IRQS { 3, 5, 9, 11, 0 }
-
-#define SK_BOOT_ROM_LOCATIONS { 0xc0000, 0xc4000, 0xc8000, 0xcc000, 0xd0000, 0xd4000, 0xd8000, 0xdc000, 0 }
-
-#define SK_BOOT_ROM_ID { 0x55, 0xaa, 0x10, 0x50, 0x06, 0x33 }
-
-/*
- * SK_G16 POS REGISTERS
- * --------------------
- */
-
-/*
- * SK_G16 has a Programmable Option Select (POS) Register.
- * The POS is composed of 8 separate registers (POS0-7) which
- * are I/O mapped on an address set by the W1 switch.
- *
- */
-
-#define SK_POS_SIZE 8 /* 8 I/O Ports are used by SK_G16 */
-
-#define SK_POS0 ioaddr /* Card-ID Low (R) */
-#define SK_POS1 ioaddr+1 /* Card-ID High (R) */
-#define SK_POS2 ioaddr+2 /* Card-Enable, Boot-ROM Disable (RW) */
-#define SK_POS3 ioaddr+3 /* Base address of RAM */
-#define SK_POS4 ioaddr+4 /* IRQ */
-
-/* POS5 - POS7 are unused */
-
-/*
- * SK_G16 MAC PREFIX
- * -----------------
- */
-
-/*
- * Scheider & Koch manufacturer code (00:00:a5).
- * This must be checked, that we are sure it is a SK card.
- */
-
-#define SK_MAC0 0x00
-#define SK_MAC1 0x00
-#define SK_MAC2 0x5a
-
-/*
- * SK_G16 ID
- * ---------
- */
-
-/*
- * If POS0,POS1 contain the following ID, then we know
- * at which I/O Port Address we are.
- */
-
-#define SK_IDLOW 0xfd
-#define SK_IDHIGH 0x6a
-
-
-/*
- * LANCE POS Bit definitions
- * -------------------------
- */
-
-#define SK_ROM_RAM_ON (POS2_CARD)
-#define SK_ROM_RAM_OFF (POS2_EPROM)
-#define SK_ROM_ON (inb(SK_POS2) & POS2_CARD)
-#define SK_ROM_OFF (inb(SK_POS2) | POS2_EPROM)
-#define SK_RAM_ON (inb(SK_POS2) | POS2_CARD)
-#define SK_RAM_OFF (inb(SK_POS2) & POS2_EPROM)
-
-#define POS2_CARD 0x0001 /* 1 = SK_G16 on 0 = off */
-#define POS2_EPROM 0x0002 /* 1 = Boot EPROM off 0 = on */
-
-/*
- * SK_G16 Memory mapped Registers
- * ------------------------------
- *
- */
-
-#define SK_IOREG (&board->ioreg) /* LANCE data registers. */
-#define SK_PORT (&board->port) /* Control, Status register */
-#define SK_IOCOM (&board->iocom) /* I/O Command */
-
-/*
- * SK_G16 Status/Control Register bits
- * -----------------------------------
- *
- * (C) Controlreg (S) Statusreg
- */
-
-/*
- * Register transfer: 0 = no transfer
- * 1 = transferring data between LANCE and I/O reg
- */
-#define SK_IORUN 0x20
-
-/*
- * LANCE interrupt: 0 = LANCE interrupt occurred
- * 1 = no LANCE interrupt occurred
- */
-#define SK_IRQ 0x10
-
-#define SK_RESET 0x08 /* Reset SK_CARD: 0 = RESET 1 = normal */
-#define SK_RW 0x02 /* 0 = write to 1 = read from */
-#define SK_ADR 0x01 /* 0 = REG DataPort 1 = RAP Reg addr port */
-
-
-#define SK_RREG SK_RW /* Transferdirection to read from lance */
-#define SK_WREG 0 /* Transferdirection to write to lance */
-#define SK_RAP SK_ADR /* Destination Register RAP */
-#define SK_RDATA 0 /* Destination Register REG DataPort */
-
-/*
- * SK_G16 I/O Command
- * ------------------
- */
-
-/*
- * Any bitcombination sets the internal I/O bit (transfer will start)
- * when written to I/O Command
- */
-
-#define SK_DOIO 0x80 /* Do Transfer */
-
-/*
- * LANCE RAP (Register Address Port).
- * ---------------------------------
- */
-
-/*
- * The LANCE internal registers are selected through the RAP.
- * The Registers are:
- *
- * CSR0 - Status and Control flags
- * CSR1 - Low order bits of initialize block (bits 15:00)
- * CSR2 - High order bits of initialize block (bits 07:00, 15:08 are reserved)
- * CSR3 - Allows redefinition of the Bus Master Interface.
- * This register must be set to 0x0002, which means BSWAP = 0,
- * ACON = 1, BCON = 0;
- *
- */
-
-#define CSR0 0x00
-#define CSR1 0x01
-#define CSR2 0x02
-#define CSR3 0x03
-
-/*
- * General Definitions
- * ===================
- */
-
-/*
- * Set the number of Tx and Rx buffers, using Log_2(# buffers).
- * We have 16KB RAM which can be accessed by the LANCE. In the
- * memory are not only the buffers but also the ring descriptors and
- * the initialize block.
- * Don't change anything unless you really know what you do.
- */
-
-#define LC_LOG_TX_BUFFERS 1 /* (2 == 2^^1) 2 Transmit buffers */
-#define LC_LOG_RX_BUFFERS 3 /* (8 == 2^^3) 8 Receive buffers */
-
-/* Descriptor ring sizes */
-
-#define TMDNUM (1 << (LC_LOG_TX_BUFFERS)) /* 2 Transmit descriptor rings */
-#define RMDNUM (1 << (LC_LOG_RX_BUFFERS)) /* 8 Receive Buffers */
-
-/* Define Mask for setting RMD, TMD length in the LANCE init_block */
-
-#define TMDNUMMASK (LC_LOG_TX_BUFFERS << 29)
-#define RMDNUMMASK (LC_LOG_RX_BUFFERS << 29)
-
-/*
- * Data Buffer size is set to maximum packet length.
- */
-
-#define PKT_BUF_SZ 1518
-
-/*
- * The number of low I/O ports used by the ethercard.
- */
-
-#define ETHERCARD_TOTAL_SIZE SK_POS_SIZE
-
-/*
- * SK_DEBUG
- *
- * Here you can choose what level of debugging wanted.
- *
- * If SK_DEBUG and SK_DEBUG2 are undefined, then only the
- * necessary messages will be printed.
- *
- * If SK_DEBUG is defined, there will be many debugging prints
- * which can help to find some mistakes in configuration or even
- * in the driver code.
- *
- * If SK_DEBUG2 is defined, many many messages will be printed
- * which normally you don't need. I used this to check the interrupt
- * routine.
- *
- * (If you define only SK_DEBUG2 then only the messages for
- * checking interrupts will be printed!)
- *
- * Normal way of live is:
- *
- * For the whole thing get going let both symbolic constants
- * undefined. If you face any problems and you know what's going
- * on (you know something about the card and you can interpret some
- * hex LANCE register output) then define SK_DEBUG
- *
- */
-
-#undef SK_DEBUG /* debugging */
-#undef SK_DEBUG2 /* debugging with more verbose report */
-
-#ifdef SK_DEBUG
-#define PRINTK(x) printk x
-#else
-#define PRINTK(x) /**/
-#endif
-
-#ifdef SK_DEBUG2
-#define PRINTK2(x) printk x
-#else
-#define PRINTK2(x) /**/
-#endif
-
-/*
- * SK_G16 RAM
- *
- * The components are memory mapped and can be set in a region from
- * 0x00000 through 0xfc000 in 16KB steps.
- *
- * The Network components are: dual ported RAM, Prom, I/O Reg, Status-,
- * Controlregister and I/O Command.
- *
- * dual ported RAM: This is the only memory region which the LANCE chip
- * has access to. From the Lance it is addressed from 0x0000 to
- * 0x3fbf. The host accesses it normally.
- *
- * PROM: The PROM obtains the ETHERNET-MAC-Address. It is realised as a
- * 8-Bit PROM, this means only the 16 even addresses are used of the
- * 32 Byte Address region. Access to an odd address results in invalid
- * data.
- *
- * LANCE I/O Reg: The I/O Reg is build of 4 single Registers, Low-Byte Write,
- * Hi-Byte Write, Low-Byte Read, Hi-Byte Read.
- * Transfer from or to the LANCE is always in 16Bit so Low and High
- * registers are always relevant.
- *
- * The Data from the Readregister is not the data in the Writeregister!!
- *
- * Port: Status- and Controlregister.
- * Two different registers which share the same address, Status is
- * read-only, Control is write-only.
- *
- * I/O Command:
- * Any bitcombination written in here starts the transmission between
- * Host and LANCE.
- */
-
-typedef struct
-{
- unsigned char ram[0x3fc0]; /* 16KB dual ported ram */
- unsigned char rom[0x0020]; /* 32Byte PROM containing 6Byte MAC */
- unsigned char res1[0x0010]; /* reserved */
- unsigned volatile short ioreg;/* LANCE I/O Register */
- unsigned volatile char port; /* Statusregister and Controlregister */
- unsigned char iocom; /* I/O Command Register */
-} SK_RAM;
-
-/* struct */
-
-/*
- * This is the structure for the dual ported ram. We
- * have exactly 16 320 Bytes. In here there must be:
- *
- * - Initialize Block (starting at a word boundary)
- * - Receive and Transmit Descriptor Rings (quadword boundary)
- * - Data Buffers (arbitrary boundary)
- *
- * This is because LANCE has on SK_G16 only access to the dual ported
- * RAM and nowhere else.
- */
-
-struct SK_ram
-{
- struct init_block ib;
- struct tmd tmde[TMDNUM];
- struct rmd rmde[RMDNUM];
- char tmdbuf[TMDNUM][PKT_BUF_SZ];
- char rmdbuf[RMDNUM][PKT_BUF_SZ];
-};
-
-/*
- * Structure where all necessary information is for ring buffer
- * management and statistics.
- */
-
-struct priv
-{
- struct SK_ram *ram; /* dual ported ram structure */
- struct rmd *rmdhead; /* start of receive ring descriptors */
- struct tmd *tmdhead; /* start of transmit ring descriptors */
- int rmdnum; /* actual used ring descriptor */
- int tmdnum; /* actual transmit descriptor for transmitting data */
- int tmdlast; /* last sent descriptor used for error handling, etc */
- void *rmdbufs[RMDNUM]; /* pointer to the receive buffers */
- void *tmdbufs[TMDNUM]; /* pointer to the transmit buffers */
- struct net_device_stats stats; /* Device driver statistics */
-};
-
-/* global variable declaration */
-
-/* IRQ map used to reserve a IRQ (see SK_open()) */
-
-/* static variables */
-
-static SK_RAM *board; /* pointer to our memory mapped board components */
-static DEFINE_SPINLOCK(SK_lock);
-
-/* Macros */
-
-\f
-/* Function Prototypes */
-
-/*
- * Device Driver functions
- * -----------------------
- * See for short explanation of each function its definitions header.
- */
-
-static int SK_probe(struct net_device *dev, short ioaddr);
-
-static void SK_timeout(struct net_device *dev);
-static int SK_open(struct net_device *dev);
-static int SK_send_packet(struct sk_buff *skb, struct net_device *dev);
-static irqreturn_t SK_interrupt(int irq, void *dev_id, struct pt_regs * regs);
-static void SK_rxintr(struct net_device *dev);
-static void SK_txintr(struct net_device *dev);
-static int SK_close(struct net_device *dev);
-
-static struct net_device_stats *SK_get_stats(struct net_device *dev);
-
-unsigned int SK_rom_addr(void);
-
-static void set_multicast_list(struct net_device *dev);
-
-/*
- * LANCE Functions
- * ---------------
- */
-
-static int SK_lance_init(struct net_device *dev, unsigned short mode);
-void SK_reset_board(void);
-void SK_set_RAP(int reg_number);
-int SK_read_reg(int reg_number);
-int SK_rread_reg(void);
-void SK_write_reg(int reg_number, int value);
-
-/*
- * Debugging functions
- * -------------------
- */
-
-void SK_print_pos(struct net_device *dev, char *text);
-void SK_print_dev(struct net_device *dev, char *text);
-void SK_print_ram(struct net_device *dev);
-
-\f
-/*-
- * Function : SK_init
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/26
- *
- * Description : Check for a SK_G16 network adaptor and initialize it.
- * This function gets called by dev_init which initializes
- * all Network devices.
- *
- * Parameters : I : struct net_device *dev - structure preconfigured
- * from Space.c
- * Return Value : 0 = Driver Found and initialized
- * Errors : ENODEV - no device found
- * ENXIO - not probed
- * Globals : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-static int io; /* 0 == probe */
-
-/*
- * Check for a network adaptor of this type, and return '0' if one exists.
- * If dev->base_addr == 0, probe all likely locations.
- * If dev->base_addr == 1, always return failure.
- */
-
-struct net_device * __init SK_init(int unit)
-{
- int *port, ports[] = SK_IO_PORTS; /* SK_G16 supported ports */
- static unsigned version_printed;
- struct net_device *dev = alloc_etherdev(sizeof(struct priv));
- int err = -ENODEV;
-
- if (!dev)
- return ERR_PTR(-ENOMEM);
-
- if (unit >= 0) {
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
- io = dev->base_addr;
- }
-
- if (version_printed++ == 0)
- PRINTK(("%s: %s", SK_NAME, rcsid));
-
- if (io > 0xff) { /* Check a single specified address */
- err = -EBUSY;
- /* Check if on specified address is a SK_G16 */
- if (request_region(io, ETHERCARD_TOTAL_SIZE, "sk_g16")) {
- err = SK_probe(dev, io);
- if (!err)
- goto got_it;
- release_region(io, ETHERCARD_TOTAL_SIZE);
- }
- } else if (io > 0) { /* Don't probe at all */
- err = -ENXIO;
- } else {
- /* Autoprobe base_addr */
- for (port = &ports[0]; *port; port++) {
- io = *port;
-
- /* Check if I/O Port region is used by another board */
- if (!request_region(io, ETHERCARD_TOTAL_SIZE, "sk_g16"))
- continue; /* Try next Port address */
-
- /* Check if at ioaddr is a SK_G16 */
- if (SK_probe(dev, io) == 0)
- goto got_it;
-
- release_region(io, ETHERCARD_TOTAL_SIZE);
- }
- }
-err_out:
- free_netdev(dev);
- return ERR_PTR(err);
-
-got_it:
- err = register_netdev(dev);
- if (err) {
- release_region(dev->base_addr, ETHERCARD_TOTAL_SIZE);
- goto err_out;
- }
- return dev;
-
-} /* End of SK_init */
-
-
-MODULE_AUTHOR("Patrick J.D. Weichmann");
-MODULE_DESCRIPTION("Schneider & Koch G16 Ethernet Device Driver");
-MODULE_LICENSE("GPL");
-MODULE_PARM(io, "i");
-MODULE_PARM_DESC(io, "0 to probe common ports (unsafe), or the I/O base of the board");
-
-
-#ifdef MODULE
-
-static struct net_device *SK_dev;
-
-static int __init SK_init_module (void)
-{
- SK_dev = SK_init(-1);
- return IS_ERR(SK_dev) ? PTR_ERR(SK_dev) : 0;
-}
-
-static void __exit SK_cleanup_module (void)
-{
- unregister_netdev(SK_dev);
- release_region(SK_dev->base_addr, ETHERCARD_TOTAL_SIZE);
- free_netdev(SK_dev);
-}
-
-module_init(SK_init_module);
-module_exit(SK_cleanup_module);
-#endif
-
-\f
-/*-
- * Function : SK_probe
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/26
- *
- * Description : This function is called by SK_init and
- * does the main part of initialization.
- *
- * Parameters : I : struct net_device *dev - SK_G16 device structure
- * I : short ioaddr - I/O Port address where POS is.
- * Return Value : 0 = Initialization done
- * Errors : ENODEV - No SK_G16 found
- * -1 - Configuration problem
- * Globals : board - pointer to SK_RAM
- * Update History :
- * YY/MM/DD uid Description
- * 94/06/30 pwe SK_ADDR now checked and at the correct place
--*/
-
-int __init SK_probe(struct net_device *dev, short ioaddr)
-{
- int i,j; /* Counters */
- int sk_addr_flag = 0; /* SK ADDR correct? 1 - no, 0 - yes */
- unsigned int rom_addr; /* used to store RAM address used for POS_ADDR */
-
- struct priv *p = netdev_priv(dev); /* SK_G16 private structure */
-
- if (inb(SK_POS0) != SK_IDLOW || inb(SK_POS1) != SK_IDHIGH)
- return -ENODEV;
- dev->base_addr = ioaddr;
-
- if (SK_ADDR & 0x3fff || SK_ADDR < 0xa0000)
- {
-
- sk_addr_flag = 1;
-
- /*
- * Now here we could use a routine which searches for a free
- * place in the ram and set SK_ADDR if found. TODO.
- */
- }
-
- if (SK_BOOT_ROM) /* Shall we keep Boot_ROM on ? */
- {
- PRINTK(("## %s: SK_BOOT_ROM is set.\n", SK_NAME));
-
- rom_addr = SK_rom_addr();
-
- if (rom_addr == 0) /* No Boot_ROM found */
- {
- if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */
- {
- printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n",
- dev->name, SK_ADDR);
- return -1;
- }
-
- rom_addr = SK_ADDR; /* assign predefined address */
-
- PRINTK(("## %s: NO Bootrom found \n", SK_NAME));
-
- outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off */
- outb(POS_ADDR, SK_POS3); /* Set RAM address */
- outb(SK_RAM_ON, SK_POS2); /* enable RAM */
- }
- else if (rom_addr == SK_ADDR)
- {
- printk("%s: RAM + ROM are set to the same address %#08x\n"
- " Check configuration. Now switching off Boot_ROM\n",
- SK_NAME, rom_addr);
-
- outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off*/
- outb(POS_ADDR, SK_POS3); /* Set RAM address */
- outb(SK_RAM_ON, SK_POS2); /* enable RAM */
- }
- else
- {
- PRINTK(("## %s: Found ROM at %#08x\n", SK_NAME, rom_addr));
- PRINTK(("## %s: Keeping Boot_ROM on\n", SK_NAME));
-
- if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */
- {
- printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n",
- dev->name, SK_ADDR);
- return -1;
- }
-
- rom_addr = SK_ADDR;
-
- outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off */
- outb(POS_ADDR, SK_POS3); /* Set RAM address */
- outb(SK_ROM_RAM_ON, SK_POS2); /* RAM on, BOOT_ROM on */
- }
- }
- else /* Don't keep Boot_ROM */
- {
- PRINTK(("## %s: SK_BOOT_ROM is not set.\n", SK_NAME));
-
- if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */
- {
- printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n",
- dev->name, SK_ADDR);
- return -1;
- }
-
- rom_addr = SK_rom_addr(); /* Try to find a Boot_ROM */
-
- /* IF we find a Boot_ROM disable it */
-
- outb(SK_ROM_RAM_OFF, SK_POS2); /* Boot_ROM + RAM off */
-
- /* We found a Boot_ROM and it's gone. Set RAM address on
- * Boot_ROM address.
- */
-
- if (rom_addr)
- {
- printk("%s: We found Boot_ROM at %#08x. Now setting RAM on"
- "that address\n", SK_NAME, rom_addr);
-
- outb(POS_ADDR, SK_POS3); /* Set RAM on Boot_ROM address */
- }
- else /* We did not find a Boot_ROM, use predefined SK_ADDR for ram */
- {
- if (sk_addr_flag) /* No or Invalid SK_ADDR is defined */
- {
- printk("%s: SK_ADDR %#08x is not valid. Check configuration.\n",
- dev->name, SK_ADDR);
- return -1;
- }
-
- rom_addr = SK_ADDR;
-
- outb(POS_ADDR, SK_POS3); /* Set RAM address */
- }
- outb(SK_RAM_ON, SK_POS2); /* enable RAM */
- }
-
-#ifdef SK_DEBUG
- SK_print_pos(dev, "POS registers after ROM, RAM config");
-#endif
-
- board = (SK_RAM *) isa_bus_to_virt(rom_addr);
-
- /* Read in station address */
- for (i = 0, j = 0; i < ETH_ALEN; i++, j+=2)
- {
- dev->dev_addr[i] = readb(board->rom+j);
- }
-
- /* Check for manufacturer code */
- if (!(dev->dev_addr[0] == SK_MAC0 &&
- dev->dev_addr[1] == SK_MAC1 &&
- dev->dev_addr[2] == SK_MAC2) )
- {
- PRINTK(("## %s: We did not find SK_G16 at RAM location.\n",
- SK_NAME));
- return -ENODEV; /* NO SK_G16 found */
- }
-
- printk("%s: %s found at %#3x, HW addr: %#04x:%02x:%02x:%02x:%02x:%02x\n",
- dev->name,
- "Schneider & Koch Netcard",
- (unsigned int) dev->base_addr,
- dev->dev_addr[0],
- dev->dev_addr[1],
- dev->dev_addr[2],
- dev->dev_addr[3],
- dev->dev_addr[4],
- dev->dev_addr[5]);
-
- memset((char *) dev->priv, 0, sizeof(struct priv)); /* clear memory */
-
- /* Assign our Device Driver functions */
-
- dev->open = SK_open;
- dev->stop = SK_close;
- dev->hard_start_xmit = SK_send_packet;
- dev->get_stats = SK_get_stats;
- dev->set_multicast_list = set_multicast_list;
- dev->tx_timeout = SK_timeout;
- dev->watchdog_timeo = HZ/7;
-
-
- dev->flags &= ~IFF_MULTICAST;
-
- /* Initialize private structure */
-
- p->ram = (struct SK_ram *) rom_addr; /* Set dual ported RAM addr */
- p->tmdhead = &(p->ram)->tmde[0]; /* Set TMD head */
- p->rmdhead = &(p->ram)->rmde[0]; /* Set RMD head */
-
- /* Initialize buffer pointers */
-
- for (i = 0; i < TMDNUM; i++)
- {
- p->tmdbufs[i] = &(p->ram)->tmdbuf[i];
- }
-
- for (i = 0; i < RMDNUM; i++)
- {
- p->rmdbufs[i] = &(p->ram)->rmdbuf[i];
- }
-
-#ifdef SK_DEBUG
- SK_print_pos(dev, "End of SK_probe");
- SK_print_ram(dev);
-#endif
- return 0; /* Initialization done */
-} /* End of SK_probe() */
-
-\f
-/*-
- * Function : SK_open
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/26
- *
- * Description : This function is called sometimes after booting
- * when ifconfig program is run.
- *
- * This function requests an IRQ, sets the correct
- * IRQ in the card. Then calls SK_lance_init() to
- * init and start the LANCE chip. Then if everything is
- * ok returns with 0 (OK), which means SK_G16 is now
- * opened and operational.
- *
- * (Called by dev_open() /net/inet/dev.c)
- *
- * Parameters : I : struct net_device *dev - SK_G16 device structure
- * Return Value : 0 - Device opened
- * Errors : -EAGAIN - Open failed
- * Side Effects : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-static int SK_open(struct net_device *dev)
-{
- int i = 0;
- int irqval = 0;
- int ioaddr = dev->base_addr;
-
- int irqtab[] = SK_IRQS;
-
- struct priv *p = netdev_priv(dev);
-
- PRINTK(("## %s: At beginning of SK_open(). CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0)));
-
- if (dev->irq == 0) /* Autoirq */
- {
- i = 0;
-
- /*
- * Check if one IRQ out of SK_IRQS is free and install
- * interrupt handler.
- * Most done by request_irq().
- * irqval: 0 - interrupt handler installed for IRQ irqtab[i]
- * -EBUSY - interrupt busy
- * -EINVAL - irq > 15 or handler = NULL
- */
-
- do
- {
- irqval = request_irq(irqtab[i], &SK_interrupt, 0, "sk_g16", dev);
- i++;
- } while (irqval && irqtab[i]);
-
- if (irqval) /* We tried every possible IRQ but no success */
- {
- printk("%s: unable to get an IRQ\n", dev->name);
- return -EAGAIN;
- }
-
- dev->irq = irqtab[--i];
-
- outb(i<<2, SK_POS4); /* Set Card on probed IRQ */
-
- }
- else if (dev->irq == 2) /* IRQ2 is always IRQ9 */
- {
- if (request_irq(9, &SK_interrupt, 0, "sk_g16", dev))
- {
- printk("%s: unable to get IRQ 9\n", dev->name);
- return -EAGAIN;
- }
- dev->irq = 9;
-
- /*
- * Now we set card on IRQ2.
- * This can be confusing, but remember that IRQ2 on the network
- * card is in reality IRQ9
- */
- outb(0x08, SK_POS4); /* set card to IRQ2 */
-
- }
- else /* Check IRQ as defined in Space.c */
- {
- int i = 0;
-
- /* check if IRQ free and valid. Then install Interrupt handler */
-
- if (request_irq(dev->irq, &SK_interrupt, 0, "sk_g16", dev))
- {
- printk("%s: unable to get selected IRQ\n", dev->name);
- return -EAGAIN;
- }
-
- switch(dev->irq)
- {
- case 3: i = 0;
- break;
- case 5: i = 1;
- break;
- case 2: i = 2;
- break;
- case 11:i = 3;
- break;
- default:
- printk("%s: Preselected IRQ %d is invalid for %s boards",
- dev->name,
- dev->irq,
- SK_NAME);
- return -EAGAIN;
- }
-
- outb(i<<2, SK_POS4); /* Set IRQ on card */
- }
-
- printk("%s: Schneider & Koch G16 at %#3x, IRQ %d, shared mem at %#08x\n",
- dev->name, (unsigned int)dev->base_addr,
- (int) dev->irq, (unsigned int) p->ram);
-
- if (!(i = SK_lance_init(dev, 0))) /* LANCE init OK? */
- {
- netif_start_queue(dev);
-
-#ifdef SK_DEBUG
-
- /*
- * This debug block tries to stop LANCE,
- * reinit LANCE with transmitter and receiver disabled,
- * then stop again and reinit with NORMAL_MODE
- */
-
- printk("## %s: After lance init. CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0));
- SK_write_reg(CSR0, CSR0_STOP);
- printk("## %s: LANCE stopped. CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0));
- SK_lance_init(dev, MODE_DTX | MODE_DRX);
- printk("## %s: Reinit with DTX + DRX off. CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0));
- SK_write_reg(CSR0, CSR0_STOP);
- printk("## %s: LANCE stopped. CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0));
- SK_lance_init(dev, MODE_NORMAL);
- printk("## %s: LANCE back to normal mode. CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0));
- SK_print_pos(dev, "POS regs before returning OK");
-
-#endif /* SK_DEBUG */
-
- return 0; /* SK_open() is successful */
- }
- else /* LANCE init failed */
- {
-
- PRINTK(("## %s: LANCE init failed: CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0)));
-
- return -EAGAIN;
- }
-
-} /* End of SK_open() */
-
-\f
-/*-
- * Function : SK_lance_init
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/26
- *
- * Description : Reset LANCE chip, fill RMD, TMD structures with
- * start values and Start LANCE.
- *
- * Parameters : I : struct net_device *dev - SK_G16 device structure
- * I : int mode - put LANCE into "mode" see data-sheet for
- * more info.
- * Return Value : 0 - Init done
- * Errors : -1 - Init failed
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-static int SK_lance_init(struct net_device *dev, unsigned short mode)
-{
- int i;
- unsigned long flags;
- struct priv *p = netdev_priv(dev);
- struct tmd *tmdp;
- struct rmd *rmdp;
-
- PRINTK(("## %s: At beginning of LANCE init. CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0)));
-
- /* Reset LANCE */
- SK_reset_board();
-
- /* Initialize TMD's with start values */
- p->tmdnum = 0; /* First descriptor for transmitting */
- p->tmdlast = 0; /* First descriptor for reading stats */
-
- for (i = 0; i < TMDNUM; i++) /* Init all TMD's */
- {
- tmdp = p->tmdhead + i;
-
- writel((unsigned long) p->tmdbufs[i], tmdp->u.buffer); /* assign buffer */
-
- /* Mark TMD as start and end of packet */
- writeb(TX_STP | TX_ENP, &tmdp->u.s.status);
- }
-
-
- /* Initialize RMD's with start values */
-
- p->rmdnum = 0; /* First RMD which will be used */
-
- for (i = 0; i < RMDNUM; i++) /* Init all RMD's */
- {
- rmdp = p->rmdhead + i;
-
-
- writel((unsigned long) p->rmdbufs[i], rmdp->u.buffer); /* assign buffer */
-
- /*
- * LANCE must be owner at beginning so that he can fill in
- * receiving packets, set status and release RMD
- */
-
- writeb(RX_OWN, &rmdp->u.s.status);
-
- writew(-PKT_BUF_SZ, &rmdp->blen); /* Buffer Size (two's complement) */
-
- writeb(0, &rmdp->mlen); /* init message length */
-
- }
-
- /* Fill LANCE Initialize Block */
-
- writew(mode, (&((p->ram)->ib.mode))); /* Set operation mode */
-
- for (i = 0; i < ETH_ALEN; i++) /* Set physical address */
- {
- writeb(dev->dev_addr[i], (&((p->ram)->ib.paddr[i])));
- }
-
- for (i = 0; i < 8; i++) /* Set multicast, logical address */
- {
- writeb(0, (&((p->ram)->ib.laddr[i]))); /* We do not use logical addressing */
- }
-
- /* Set ring descriptor pointers and set number of descriptors */
-
- writel((int)p->rmdhead | RMDNUMMASK, (&((p->ram)->ib.rdrp)));
- writel((int)p->tmdhead | TMDNUMMASK, (&((p->ram)->ib.tdrp)));
-
- /* Prepare LANCE Control and Status Registers */
-
- spin_lock_irqsave(&SK_lock, flags);
-
- SK_write_reg(CSR3, CSR3_ACON); /* Ale Control !!!THIS MUST BE SET!!!! */
-
- /*
- * LANCE addresses the RAM from 0x0000 to 0x3fbf and has no access to
- * PC Memory locations.
- *
- * In structure SK_ram is defined that the first thing in ram
- * is the initialization block. So his address is for LANCE always
- * 0x0000
- *
- * CSR1 contains low order bits 15:0 of initialization block address
- * CSR2 is built of:
- * 7:0 High order bits 23:16 of initialization block address
- * 15:8 reserved, must be 0
- */
-
- /* Set initialization block address (must be on word boundary) */
- SK_write_reg(CSR1, 0); /* Set low order bits 15:0 */
- SK_write_reg(CSR2, 0); /* Set high order bits 23:16 */
-
-
- PRINTK(("## %s: After setting CSR1-3. CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0)));
-
- /* Initialize LANCE */
-
- /*
- * INIT = Initialize, when set, causes the LANCE to begin the
- * initialization procedure and access the Init Block.
- */
-
- SK_write_reg(CSR0, CSR0_INIT);
-
- spin_unlock_irqrestore(&SK_lock, flags);
-
- /* Wait until LANCE finished initialization */
-
- SK_set_RAP(CSR0); /* Register Address Pointer to CSR0 */
-
- for (i = 0; (i < 100) && !(SK_rread_reg() & CSR0_IDON); i++)
- ; /* Wait until init done or go ahead if problems (i>=100) */
-
- if (i >= 100) /* Something is wrong ! */
- {
- printk("%s: can't init am7990, status: %04x "
- "init_block: %#08x\n",
- dev->name, (int) SK_read_reg(CSR0),
- (unsigned int) &(p->ram)->ib);
-
-#ifdef SK_DEBUG
- SK_print_pos(dev, "LANCE INIT failed");
- SK_print_dev(dev,"Device Structure:");
-#endif
-
- return -1; /* LANCE init failed */
- }
-
- PRINTK(("## %s: init done after %d ticks\n", SK_NAME, i));
-
- /* Clear Initialize done, enable Interrupts, start LANCE */
-
- SK_write_reg(CSR0, CSR0_IDON | CSR0_INEA | CSR0_STRT);
-
- PRINTK(("## %s: LANCE started. CSR0: %#06x\n", SK_NAME,
- SK_read_reg(CSR0)));
-
- return 0; /* LANCE is up and running */
-
-} /* End of SK_lance_init() */
-
-
-\f
-/*-
- * Function : SK_send_packet
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/27
- *
- * Description : Writes an socket buffer into a transmit descriptor
- * and starts transmission.
- *
- * Parameters : I : struct sk_buff *skb - packet to transfer
- * I : struct net_device *dev - SK_G16 device structure
- * Return Value : 0 - OK
- * 1 - Could not transmit (dev_queue_xmit will queue it)
- * and try to sent it later
- * Globals : None
- * Side Effects : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-static void SK_timeout(struct net_device *dev)
-{
- printk(KERN_WARNING "%s: xmitter timed out, try to restart!\n", dev->name);
- SK_lance_init(dev, MODE_NORMAL); /* Reinit LANCE */
- netif_wake_queue(dev); /* Clear Transmitter flag */
- dev->trans_start = jiffies; /* Mark Start of transmission */
-}
-
-static int SK_send_packet(struct sk_buff *skb, struct net_device *dev)
-{
- struct priv *p = netdev_priv(dev);
- struct tmd *tmdp;
- static char pad[64];
-
- PRINTK2(("## %s: SK_send_packet() called, CSR0 %#04x.\n",
- SK_NAME, SK_read_reg(CSR0)));
-
-
- /*
- * Block a timer-based transmit from overlapping.
- * This means check if we are already in.
- */
-
- netif_stop_queue (dev);
-
- {
-
- /* Evaluate Packet length */
- short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
-
- tmdp = p->tmdhead + p->tmdnum; /* Which descriptor for transmitting */
-
- /* Fill in Transmit Message Descriptor */
-
- /* Copy data into dual ported ram */
-
- memcpy_toio((tmdp->u.buffer & 0x00ffffff), skb->data, skb->len);
- if (len != skb->len)
- memcpy_toio((tmdp->u.buffer & 0x00ffffff) + skb->len, pad, len-skb->len);
-
- writew(-len, &tmdp->blen); /* set length to transmit */
-
- /*
- * Packet start and end is always set because we use the maximum
- * packet length as buffer length.
- * Relinquish ownership to LANCE
- */
-
- writeb(TX_OWN | TX_STP | TX_ENP, &tmdp->u.s.status);
-
- /* Start Demand Transmission */
- SK_write_reg(CSR0, CSR0_TDMD | CSR0_INEA);
-
- dev->trans_start = jiffies; /* Mark start of transmission */
-
- /* Set pointer to next transmit buffer */
- p->tmdnum++;
- p->tmdnum &= TMDNUM-1;
-
- /* Do we own the next transmit buffer ? */
- if (! (readb(&((p->tmdhead + p->tmdnum)->u.s.status)) & TX_OWN) )
- {
- /*
- * We own next buffer and are ready to transmit, so
- * clear busy flag
- */
- netif_start_queue(dev);
- }
-
- p->stats.tx_bytes += skb->len;
-
- }
-
- dev_kfree_skb(skb);
- return 0;
-} /* End of SK_send_packet */
-
-\f
-/*-
- * Function : SK_interrupt
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/27
- *
- * Description : SK_G16 interrupt handler which checks for LANCE
- * Errors, handles transmit and receive interrupts
- *
- * Parameters : I : int irq, void *dev_id, struct pt_regs * regs -
- * Return Value : None
- * Errors : None
- * Globals : None
- * Side Effects : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-static irqreturn_t SK_interrupt(int irq, void *dev_id, struct pt_regs * regs)
-{
- int csr0;
- struct net_device *dev = dev_id;
- struct priv *p = netdev_priv(dev);
-
-
- PRINTK2(("## %s: SK_interrupt(). status: %#06x\n",
- SK_NAME, SK_read_reg(CSR0)));
-
- if (dev == NULL)
- {
- printk("SK_interrupt(): IRQ %d for unknown device.\n", irq);
- }
-
- spin_lock (&SK_lock);
-
- csr0 = SK_read_reg(CSR0); /* store register for checking */
-
- /*
- * Acknowledge all of the current interrupt sources, disable
- * Interrupts (INEA = 0)
- */
-
- SK_write_reg(CSR0, csr0 & CSR0_CLRALL);
-
- if (csr0 & CSR0_ERR) /* LANCE Error */
- {
- printk("%s: error: %04x\n", dev->name, csr0);
-
- if (csr0 & CSR0_MISS) /* No place to store packet ? */
- {
- p->stats.rx_dropped++;
- }
- }
-
- if (csr0 & CSR0_RINT) /* Receive Interrupt (packet arrived) */
- {
- SK_rxintr(dev);
- }
-
- if (csr0 & CSR0_TINT) /* Transmit interrupt (packet sent) */
- {
- SK_txintr(dev);
- }
-
- SK_write_reg(CSR0, CSR0_INEA); /* Enable Interrupts */
-
- spin_unlock (&SK_lock);
- return IRQ_HANDLED;
-} /* End of SK_interrupt() */
-
-\f
-/*-
- * Function : SK_txintr
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/27
- *
- * Description : After sending a packet we check status, update
- * statistics and relinquish ownership of transmit
- * descriptor ring.
- *
- * Parameters : I : struct net_device *dev - SK_G16 device structure
- * Return Value : None
- * Errors : None
- * Globals : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-static void SK_txintr(struct net_device *dev)
-{
- int tmdstat;
- struct tmd *tmdp;
- struct priv *p = netdev_priv(dev);
-
-
- PRINTK2(("## %s: SK_txintr() status: %#06x\n",
- SK_NAME, SK_read_reg(CSR0)));
-
- tmdp = p->tmdhead + p->tmdlast; /* Which buffer we sent at last ? */
-
- /* Set next buffer */
- p->tmdlast++;
- p->tmdlast &= TMDNUM-1;
-
- tmdstat = readb(&tmdp->u.s.status);
-
- /*
- * We check status of transmitted packet.
- * see LANCE data-sheet for error explanation
- */
- if (tmdstat & TX_ERR) /* Error occurred */
- {
- int stat2 = readw(&tmdp->status2);
-
- printk("%s: TX error: %04x %04x\n", dev->name, tmdstat, stat2);
-
- if (stat2 & TX_TDR) /* TDR problems? */
- {
- printk("%s: tdr-problems \n", dev->name);
- }
-
- if (stat2 & TX_RTRY) /* Failed in 16 attempts to transmit ? */
- p->stats.tx_aborted_errors++;
- if (stat2 & TX_LCOL) /* Late collision ? */
- p->stats.tx_window_errors++;
- if (stat2 & TX_LCAR) /* Loss of Carrier ? */
- p->stats.tx_carrier_errors++;
- if (stat2 & TX_UFLO) /* Underflow error ? */
- {
- p->stats.tx_fifo_errors++;
-
- /*
- * If UFLO error occurs it will turn transmitter of.
- * So we must reinit LANCE
- */
-
- SK_lance_init(dev, MODE_NORMAL);
- }
-
- p->stats.tx_errors++;
-
- writew(0, &tmdp->status2); /* Clear error flags */
- }
- else if (tmdstat & TX_MORE) /* Collisions occurred ? */
- {
- /*
- * Here I have a problem.
- * I only know that there must be one or up to 15 collisions.
- * That's why TX_MORE is set, because after 16 attempts TX_RTRY
- * will be set which means couldn't send packet aborted transfer.
- *
- * First I did not have this in but then I thought at minimum
- * we see that something was not ok.
- * If anyone knows something better than this to handle this
- * please report it.
- */
-
- p->stats.collisions++;
- }
- else /* Packet sent without any problems */
- {
- p->stats.tx_packets++;
- }
-
- /*
- * We mark transmitter not busy anymore, because now we have a free
- * transmit descriptor which can be filled by SK_send_packet and
- * afterwards sent by the LANCE
- *
- * The function which do handle slow IRQ parts is do_bottom_half()
- * which runs at normal kernel priority, that means all interrupt are
- * enabled. (see kernel/irq.c)
- *
- * net_bh does something like this:
- * - check if already in net_bh
- * - try to transmit something from the send queue
- * - if something is in the receive queue send it up to higher
- * levels if it is a known protocol
- * - try to transmit something from the send queue
- */
-
- netif_wake_queue(dev);
-
-} /* End of SK_txintr() */
-
-\f
-/*-
- * Function : SK_rxintr
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/27
- *
- * Description : Buffer sent, check for errors, relinquish ownership
- * of the receive message descriptor.
- *
- * Parameters : I : SK_G16 device structure
- * Return Value : None
- * Globals : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-static void SK_rxintr(struct net_device *dev)
-{
-
- struct rmd *rmdp;
- int rmdstat;
- struct priv *p = netdev_priv(dev);
-
- PRINTK2(("## %s: SK_rxintr(). CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0)));
-
- rmdp = p->rmdhead + p->rmdnum;
-
- /* As long as we own the next entry, check status and send
- * it up to higher layer
- */
-
- while (!( (rmdstat = readb(&rmdp->u.s.status)) & RX_OWN))
- {
- /*
- * Start and end of packet must be set, because we use
- * the ethernet maximum packet length (1518) as buffer size.
- *
- * Because our buffers are at maximum OFLO and BUFF errors are
- * not to be concerned (see Data sheet)
- */
-
- if ((rmdstat & (RX_STP | RX_ENP)) != (RX_STP | RX_ENP))
- {
- /* Start of a frame > 1518 Bytes ? */
-
- if (rmdstat & RX_STP)
- {
- p->stats.rx_errors++; /* bad packet received */
- p->stats.rx_length_errors++; /* packet too long */
-
- printk("%s: packet too long\n", dev->name);
- }
-
- /*
- * All other packets will be ignored until a new frame with
- * start (RX_STP) set follows.
- *
- * What we do is just give descriptor free for new incoming
- * packets.
- */
-
- writeb(RX_OWN, &rmdp->u.s.status); /* Relinquish ownership to LANCE */
-
- }
- else if (rmdstat & RX_ERR) /* Receive Error ? */
- {
- printk("%s: RX error: %04x\n", dev->name, (int) rmdstat);
-
- p->stats.rx_errors++;
-
- if (rmdstat & RX_FRAM) p->stats.rx_frame_errors++;
- if (rmdstat & RX_CRC) p->stats.rx_crc_errors++;
-
- writeb(RX_OWN, &rmdp->u.s.status); /* Relinquish ownership to LANCE */
-
- }
- else /* We have a packet which can be queued for the upper layers */
- {
-
- int len = readw(&rmdp->mlen) & 0x0fff; /* extract message length from receive buffer */
- struct sk_buff *skb;
-
- skb = dev_alloc_skb(len+2); /* allocate socket buffer */
-
- if (skb == NULL) /* Could not get mem ? */
- {
-
- /*
- * Couldn't allocate sk_buffer so we give descriptor back
- * to Lance, update statistics and go ahead.
- */
-
- writeb(RX_OWN, &rmdp->u.s.status); /* Relinquish ownership to LANCE */
- printk("%s: Couldn't allocate sk_buff, deferring packet.\n",
- dev->name);
- p->stats.rx_dropped++;
-
- break; /* Jump out */
- }
-
- /* Prepare sk_buff to queue for upper layers */
-
- skb->dev = dev;
- skb_reserve(skb,2); /* Align IP header on 16 byte boundary */
-
- /*
- * Copy data out of our receive descriptor into sk_buff.
- *
- * (rmdp->u.buffer & 0x00ffffff) -> get address of buffer and
- * ignore status fields)
- */
-
- memcpy_fromio(skb_put(skb,len), (rmdp->u.buffer & 0x00ffffff), len);
-
-
- /*
- * Notify the upper protocol layers that there is another packet
- * to handle
- *
- * netif_rx() always succeeds. see /net/inet/dev.c for more.
- */
-
- skb->protocol=eth_type_trans(skb,dev);
- netif_rx(skb); /* queue packet and mark it for processing */
-
- /*
- * Packet is queued and marked for processing so we
- * free our descriptor and update statistics
- */
-
- writeb(RX_OWN, &rmdp->u.s.status);
- dev->last_rx = jiffies;
- p->stats.rx_packets++;
- p->stats.rx_bytes += len;
-
-
- p->rmdnum++;
- p->rmdnum %= RMDNUM;
-
- rmdp = p->rmdhead + p->rmdnum;
- }
- }
-} /* End of SK_rxintr() */
-
-\f
-/*-
- * Function : SK_close
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/26
- *
- * Description : close gets called from dev_close() and should
- * deinstall the card (free_irq, mem etc).
- *
- * Parameters : I : struct net_device *dev - our device structure
- * Return Value : 0 - closed device driver
- * Errors : None
- * Globals : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-/* I have tried to set BOOT_ROM on and RAM off but then, after a 'ifconfig
- * down' the system stops. So I don't shut set card to init state.
- */
-
-static int SK_close(struct net_device *dev)
-{
-
- PRINTK(("## %s: SK_close(). CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0)));
-
- netif_stop_queue(dev); /* Transmitter busy */
-
- printk("%s: Shutting %s down CSR0 %#06x\n", dev->name, SK_NAME,
- (int) SK_read_reg(CSR0));
-
- SK_write_reg(CSR0, CSR0_STOP); /* STOP the LANCE */
-
- free_irq(dev->irq, dev); /* Free IRQ */
-
- return 0; /* always succeed */
-
-} /* End of SK_close() */
-
-\f
-/*-
- * Function : SK_get_stats
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/26
- *
- * Description : Return current status structure to upper layers.
- * It is called by sprintf_stats (dev.c).
- *
- * Parameters : I : struct net_device *dev - our device structure
- * Return Value : struct net_device_stats * - our current statistics
- * Errors : None
- * Side Effects : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-static struct net_device_stats *SK_get_stats(struct net_device *dev)
-{
-
- struct priv *p = netdev_priv(dev);
-
- PRINTK(("## %s: SK_get_stats(). CSR0: %#06x\n",
- SK_NAME, SK_read_reg(CSR0)));
-
- return &p->stats; /* Return Device status */
-
-} /* End of SK_get_stats() */
-
-\f
-/*-
- * Function : set_multicast_list
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/26
- *
- * Description : This function gets called when a program performs
- * a SIOCSIFFLAGS call. Ifconfig does this if you call
- * 'ifconfig [-]allmulti' which enables or disables the
- * Promiscuous mode.
- * Promiscuous mode is when the Network card accepts all
- * packets, not only the packets which match our MAC
- * Address. It is useful for writing a network monitor,
- * but it is also a security problem. You have to remember
- * that all information on the net is not encrypted.
- *
- * Parameters : I : struct net_device *dev - SK_G16 device Structure
- * Return Value : None
- * Errors : None
- * Globals : None
- * Update History :
- * YY/MM/DD uid Description
- * 95/10/18 ACox New multicast calling scheme
--*/
-
-
-/* Set or clear the multicast filter for SK_G16.
- */
-
-static void set_multicast_list(struct net_device *dev)
-{
-
- if (dev->flags&IFF_PROMISC)
- {
- /* Reinitialize LANCE with MODE_PROM set */
- SK_lance_init(dev, MODE_PROM);
- }
- else if (dev->mc_count==0 && !(dev->flags&IFF_ALLMULTI))
- {
- /* Reinitialize LANCE without MODE_PROM */
- SK_lance_init(dev, MODE_NORMAL);
- }
- else
- {
- /* Multicast with logical address filter on */
- /* Reinitialize LANCE without MODE_PROM */
- SK_lance_init(dev, MODE_NORMAL);
-
- /* Not implemented yet. */
- }
-} /* End of set_multicast_list() */
-
-
-\f
-/*-
- * Function : SK_rom_addr
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/06/01
- *
- * Description : Try to find a Boot_ROM at all possible locations
- *
- * Parameters : None
- * Return Value : Address where Boot_ROM is
- * Errors : 0 - Did not find Boot_ROM
- * Globals : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-unsigned int __init SK_rom_addr(void)
-{
- int i,j;
- int rom_found = 0;
- unsigned int rom_location[] = SK_BOOT_ROM_LOCATIONS;
- unsigned char rom_id[] = SK_BOOT_ROM_ID;
- unsigned char test_byte;
-
- /* Autodetect Boot_ROM */
- PRINTK(("## %s: Autodetection of Boot_ROM\n", SK_NAME));
-
- for (i = 0; (rom_location[i] != 0) && (rom_found == 0); i++)
- {
-
- PRINTK(("## Trying ROM location %#08x", rom_location[i]));
-
- rom_found = 1;
- for (j = 0; j < 6; j++)
- {
- test_byte = readb(rom_location[i]+j);
- PRINTK((" %02x ", *test_byte));
-
- if(test_byte != rom_id[j])
- {
- rom_found = 0;
- }
- }
- PRINTK(("\n"));
- }
-
- if (rom_found == 1)
- {
- PRINTK(("## %s: Boot_ROM found at %#08x\n",
- SK_NAME, rom_location[(i-1)]));
-
- return (rom_location[--i]);
- }
- else
- {
- PRINTK(("%s: No Boot_ROM found\n", SK_NAME));
- return 0;
- }
-} /* End of SK_rom_addr() */
-
-
-\f
-/* LANCE access functions
- *
- * ! CSR1-3 can only be accessed when in CSR0 the STOP bit is set !
- */
-
-
-/*-
- * Function : SK_reset_board
- *
- * Author : Patrick J.D. Weichmann
- *
- * Date Created : 94/05/25
- *
- * Description : This function resets SK_G16 and all components, but
- * POS registers are not changed
- *
- * Parameters : None
- * Return Value : None
- * Errors : None
- * Globals : SK_RAM *board - SK_RAM structure pointer
- *
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-void SK_reset_board(void)
-{
- writeb(0x00, SK_PORT); /* Reset active */
- mdelay(5); /* Delay min 5ms */
- writeb(SK_RESET, SK_PORT); /* Set back to normal operation */
-
-} /* End of SK_reset_board() */
-
-\f
-/*-
- * Function : SK_set_RAP
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/25
- *
- * Description : Set LANCE Register Address Port to register
- * for later data transfer.
- *
- * Parameters : I : reg_number - which CSR to read/write from/to
- * Return Value : None
- * Errors : None
- * Globals : SK_RAM *board - SK_RAM structure pointer
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-void SK_set_RAP(int reg_number)
-{
- writew(reg_number, SK_IOREG);
- writeb(SK_RESET | SK_RAP | SK_WREG, SK_PORT);
- writeb(SK_DOIO, SK_IOCOM);
-
- while (readb(SK_PORT) & SK_IORUN)
- barrier();
-} /* End of SK_set_RAP() */
-
-\f
-/*-
- * Function : SK_read_reg
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/25
- *
- * Description : Set RAP and read data from a LANCE CSR register
- *
- * Parameters : I : reg_number - which CSR to read from
- * Return Value : Register contents
- * Errors : None
- * Globals : SK_RAM *board - SK_RAM structure pointer
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-int SK_read_reg(int reg_number)
-{
- SK_set_RAP(reg_number);
-
- writeb(SK_RESET | SK_RDATA | SK_RREG, SK_PORT);
- writeb(SK_DOIO, SK_IOCOM);
-
- while (readb(SK_PORT) & SK_IORUN)
- barrier();
- return (readw(SK_IOREG));
-
-} /* End of SK_read_reg() */
-
-\f
-/*-
- * Function : SK_rread_reg
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/28
- *
- * Description : Read data from preseted register.
- * This function requires that you know which
- * Register is actually set. Be aware that CSR1-3
- * can only be accessed when in CSR0 STOP is set.
- *
- * Return Value : Register contents
- * Errors : None
- * Globals : SK_RAM *board - SK_RAM structure pointer
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-int SK_rread_reg(void)
-{
- writeb(SK_RESET | SK_RDATA | SK_RREG, SK_PORT);
-
- writeb(SK_DOIO, SK_IOCOM);
-
- while (readb(SK_PORT) & SK_IORUN)
- barrier();
- return (readw(SK_IOREG));
-
-} /* End of SK_rread_reg() */
-
-\f
-/*-
- * Function : SK_write_reg
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/25
- *
- * Description : This function sets the RAP then fills in the
- * LANCE I/O Reg and starts Transfer to LANCE.
- * It waits until transfer has ended which is max. 7 ms
- * and then it returns.
- *
- * Parameters : I : reg_number - which CSR to write to
- * I : value - what value to fill into register
- * Return Value : None
- * Errors : None
- * Globals : SK_RAM *board - SK_RAM structure pointer
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-void SK_write_reg(int reg_number, int value)
-{
- SK_set_RAP(reg_number);
-
- writew(value, SK_IOREG);
- writeb(SK_RESET | SK_RDATA | SK_WREG, SK_PORT);
- writeb(SK_DOIO, SK_IOCOM);
-
- while (readb(SK_PORT) & SK_IORUN)
- barrier();
-} /* End of SK_write_reg */
-
-\f
-
-/*
- * Debugging functions
- * -------------------
- */
-
-/*-
- * Function : SK_print_pos
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/25
- *
- * Description : This function prints out the 4 POS (Programmable
- * Option Select) Registers. Used mainly to debug operation.
- *
- * Parameters : I : struct net_device *dev - SK_G16 device structure
- * I : char * - Text which will be printed as title
- * Return Value : None
- * Errors : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-void SK_print_pos(struct net_device *dev, char *text)
-{
- int ioaddr = dev->base_addr;
-
- unsigned char pos0 = inb(SK_POS0),
- pos1 = inb(SK_POS1),
- pos2 = inb(SK_POS2),
- pos3 = inb(SK_POS3),
- pos4 = inb(SK_POS4);
-
-
- printk("## %s: %s.\n"
- "## pos0=%#4x pos1=%#4x pos2=%#04x pos3=%#08x pos4=%#04x\n",
- SK_NAME, text, pos0, pos1, pos2, (pos3<<14), pos4);
-
-} /* End of SK_print_pos() */
-
-
-\f
-/*-
- * Function : SK_print_dev
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/05/25
- *
- * Description : This function simply prints out the important fields
- * of the device structure.
- *
- * Parameters : I : struct net_device *dev - SK_G16 device structure
- * I : char *text - Title for printing
- * Return Value : None
- * Errors : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-void SK_print_dev(struct net_device *dev, char *text)
-{
- if (dev == NULL)
- {
- printk("## %s: Device Structure. %s\n", SK_NAME, text);
- printk("## DEVICE == NULL\n");
- }
- else
- {
- printk("## %s: Device Structure. %s\n", SK_NAME, text);
- printk("## Device Name: %s Base Address: %#06lx IRQ: %d\n",
- dev->name, dev->base_addr, dev->irq);
-
- printk("## next device: %#08x init function: %#08x\n",
- (int) dev->next, (int) dev->init);
- }
-
-} /* End of SK_print_dev() */
-
-
-\f
-/*-
- * Function : SK_print_ram
- * Author : Patrick J.D. Weichmann
- * Date Created : 94/06/02
- *
- * Description : This function is used to check how are things set up
- * in the 16KB RAM. Also the pointers to the receive and
- * transmit descriptor rings and rx and tx buffers locations.
- * It contains a minor bug in printing, but has no effect to the values
- * only newlines are not correct.
- *
- * Parameters : I : struct net_device *dev - SK_G16 device structure
- * Return Value : None
- * Errors : None
- * Globals : None
- * Update History :
- * YY/MM/DD uid Description
--*/
-
-void __init SK_print_ram(struct net_device *dev)
-{
-
- int i;
- struct priv *p = netdev_priv(dev);
-
- printk("## %s: RAM Details.\n"
- "## RAM at %#08x tmdhead: %#08x rmdhead: %#08x initblock: %#08x\n",
- SK_NAME,
- (unsigned int) p->ram,
- (unsigned int) p->tmdhead,
- (unsigned int) p->rmdhead,
- (unsigned int) &(p->ram)->ib);
-
- printk("## ");
-
- for(i = 0; i < TMDNUM; i++)
- {
- if (!(i % 3)) /* Every third line do a newline */
- {
- printk("\n## ");
- }
- printk("tmdbufs%d: %#08x ", (i+1), (int) p->tmdbufs[i]);
- }
- printk("## ");
-
- for(i = 0; i < RMDNUM; i++)
- {
- if (!(i % 3)) /* Every third line do a newline */
- {
- printk("\n## ");
- }
- printk("rmdbufs%d: %#08x ", (i+1), (int) p->rmdbufs[i]);
- }
- printk("\n");
-
-} /* End of SK_print_ram() */
-
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff