/* ni5010.c: A network driver for the MiCom-Interlan NI5010 ethercard.
*
* Copyright 1996,1997,2006 Jan-Pascal van Best and Andreas Mohr.
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
* The authors may be reached as:
* janpascal@vanbest.org andi@lisas.de
*
* Sources:
* Donald Becker's "skeleton.c"
* Crynwr ni5010 packet driver
*
* Changes:
* v0.0: First test version
* v0.1: First working version
* v0.2:
* v0.3->v0.90: Now demand setting io and irq when loading as module
* 970430 v0.91: modified for Linux 2.1.14
* v0.92: Implemented Andreas' (better) NI5010 probe
* 970503 v0.93: Fixed auto-irq failure on warm reboot (JB)
* 970623 v1.00: First kernel version (AM)
* 970814 v1.01: Added detection of onboard receive buffer size (AM)
* 060611 v1.02: slight cleanup: email addresses, driver modernization.
* Bugs:
* - not SMP-safe (no locking of I/O accesses)
* - Note that you have to patch ifconfig for the new /proc/net/dev
* format. It gives incorrect stats otherwise.
*
* To do:
* Fix all bugs :-)
* Move some stuff to chipset_init()
* Handle xmt errors other than collisions
* Complete merge with Andreas' driver
* Implement ring buffers (Is this useful? You can't squeeze
* too many packet in a 2k buffer!)
* Implement DMA (Again, is this useful? Some docs say DMA is
* slower than programmed I/O)
*
* Compile with:
* gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ \
* -DMODULE -c ni5010.c
*
* Insert with e.g.:
* insmod ni5010.ko io=0x300 irq=5
*/
#include <linux/module.h>
#include <linux/kernel.h>
#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/init.h>
#include <linux/bitops.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include "ni5010.h"
static const char boardname[] = "NI5010";
static char version[] __initdata =
"ni5010.c: v1.02 20060611 Jan-Pascal van Best and Andreas Mohr\n";
/* bufsize_rcv == 0 means autoprobing */
static unsigned int bufsize_rcv;
#define JUMPERED_INTERRUPTS /* IRQ line jumpered on board */
#undef JUMPERED_DMA /* No DMA used */
#undef FULL_IODETECT /* Only detect in portlist */
#ifndef FULL_IODETECT
/* A zero-terminated list of I/O addresses to be probed. */
static unsigned int ports[] __initdata =
{ 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0 };
#endif
/* Use 0 for production, 1 for verification, >2 for debug */
#ifndef NI5010_DEBUG
#define NI5010_DEBUG 0
#endif
/* Information that needs to be kept for each board. */
struct ni5010_local {
struct net_device_stats stats;
int o_pkt_size;
spinlock_t lock;
};
/* Index to functions, as function prototypes. */
static int ni5010_probe1(struct net_device *dev, int ioaddr);
static int ni5010_open(struct net_device *dev);
static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev);
static irqreturn_t ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs);
static void ni5010_rx(struct net_device *dev);
static void ni5010_timeout(struct net_device *dev);
static int ni5010_close(struct net_device *dev);
static struct net_device_stats *ni5010_get_stats(struct net_device *dev);
static void ni5010_set_multicast_list(struct net_device *dev);
static void reset_receiver(struct net_device *dev);
static int process_xmt_interrupt(struct net_device *dev);
#define tx_done(dev) 1
static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad);
static void chipset_init(struct net_device *dev, int startp);
static void dump_packet(void *buf, int len);
static void ni5010_show_registers(struct net_device *dev);
static int io;
static int irq;
struct net_device * __init ni5010_probe(int unit)
{
struct net_device *dev = alloc_etherdev(sizeof(struct ni5010_local));
int *port;
int err = 0;
if (!dev)
return ERR_PTR(-ENOMEM);
if (unit >= 0) {
sprintf(dev->name, "eth%d", unit);
netdev_boot_setup_check(dev);
io = dev->base_addr;
irq = dev->irq;
}
PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name));
SET_MODULE_OWNER(dev);
if (io > 0x1ff) { /* Check a single specified location. */
err = ni5010_probe1(dev, io);
} else if (io != 0) { /* Don't probe at all. */
err = -ENXIO;
} else {
#ifdef FULL_IODETECT
for (io=0x200; io<0x400 && ni5010_probe1(dev, io) ; io+=0x20)
;
if (io == 0x400)
err = -ENODEV;
#else
for (port = ports; *port && ni5010_probe1(dev, *port); port++)
;
if (!*port)
err = -ENODEV;
#endif /* FULL_IODETECT */
}
if (err)
goto out;
err = register_netdev(dev);
if (err)
goto out1;
return dev;
out1:
release_region(dev->base_addr, NI5010_IO_EXTENT);
out:
free_netdev(dev);
return ERR_PTR(err);
}
static inline int rd_port(int ioaddr)
{
inb(IE_RBUF);
return inb(IE_SAPROM);
}
static void __init trigger_irq(int ioaddr)
{
outb(0x00, EDLC_RESET); /* Clear EDLC hold RESET state */
outb(0x00, IE_RESET); /* Board reset */
outb(0x00, EDLC_XMASK); /* Disable all Xmt interrupts */
outb(0x00, EDLC_RMASK); /* Disable all Rcv interrupt */
outb(0xff, EDLC_XCLR); /* Clear all pending Xmt interrupts */
outb(0xff, EDLC_RCLR); /* Clear all pending Rcv interrupts */
/*
* Transmit packet mode: Ignore parity, Power xcvr,
* Enable loopback
*/
outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
outb(RMD_BROADCAST, EDLC_RMODE); /* Receive normal&broadcast */
outb(XM_ALL, EDLC_XMASK); /* Enable all Xmt interrupts */
udelay(50); /* FIXME: Necessary? */
outb(MM_EN_XMT|MM_MUX, IE_MMODE); /* Start transmission */
}
/*
* This is the real probe routine. Linux has a history of friendly device
* probes on the ISA bus. A good device probes avoids doing writes, and
* verifies that the correct device exists and functions.
*/
static int __init ni5010_probe1(struct net_device *dev, int ioaddr)
{
static unsigned version_printed;
struct ni5010_local *lp;
int i;
unsigned int data = 0;
int boguscount = 40;
int err = -ENODEV;
dev->base_addr = ioaddr;
dev->irq = irq;
if (!request_region(ioaddr, NI5010_IO_EXTENT, boardname))
return -EBUSY;
/*
* This is no "official" probe method, I've rather tested which
* probe works best with my seven NI5010 cards
* (they have very different serial numbers)
* Suggestions or failure reports are very, very welcome !
* But I think it is a relatively good probe method
* since it doesn't use any "outb"
* It should be nearly 100% reliable !
* well-known WARNING: this probe method (like many others)
* will hang the system if a NE2000 card region is probed !
*
* - Andreas
*/
PRINTK2((KERN_DEBUG "%s: entering ni5010_probe1(%#3x)\n",
dev->name, ioaddr));
if (inb(ioaddr+0) == 0xff)
goto out;
while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) &
rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff)
{
if (boguscount-- == 0)
goto out;
}
PRINTK2((KERN_DEBUG "%s: I/O #1 passed!\n", dev->name));
for (i=0; i<32; i++)
if ( (data = rd_port(ioaddr)) != 0xff) break;
if (data==0xff)
goto out;
PRINTK2((KERN_DEBUG "%s: I/O #2 passed!\n", dev->name));
if ((data != SA_ADDR0) || (rd_port(ioaddr) != SA_ADDR1) ||
(rd_port(ioaddr) != SA_ADDR2))
goto out;
for (i=0; i<4; i++)
rd_port(ioaddr);
if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) ||
(rd_port(ioaddr) != NI5010_MAGICVAL2) )
goto out;
PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name));
if (NI5010_DEBUG && version_printed++ == 0)
printk(KERN_INFO "%s", version);
printk("NI5010 ethercard probe at 0x%x: ", ioaddr);
dev->base_addr = ioaddr;
for (i=0; i<6; i++) {
outw(i, IE_GP);
printk("%2.2x ", dev->dev_addr[i] = inb(IE_SAPROM));
}
PRINTK2((KERN_DEBUG "%s: I/O #4 passed!\n", dev->name));
#ifdef JUMPERED_INTERRUPTS
if (dev->irq == 0xff)
;
else if (dev->irq < 2) {
unsigned long irq_mask;
PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name));
irq_mask = probe_irq_on();
trigger_irq(ioaddr);
mdelay(20);
dev->irq = probe_irq_off(irq_mask);
PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name));
if (dev->irq == 0) {
err = -EAGAIN;
printk(KERN_WARNING "%s: no IRQ found!\n", dev->name);
goto out;
}
PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name));
} else if (dev->irq == 2) {
dev->irq = 9;
}
#endif /* JUMPERED_INTERRUPTS */
PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name));
/* DMA is not supported (yet?), so no use detecting it */
lp = netdev_priv(dev);
spin_lock_init(&lp->lock);
PRINTK2((KERN_DEBUG "%s: I/O #10 passed!\n", dev->name));
/* get the size of the onboard receive buffer
* higher addresses than bufsize are wrapped into real buffer
* i.e. data for offs. 0x801 is written to 0x1 with a 2K onboard buffer
*/
if (!bufsize_rcv) {
outb(1, IE_MMODE); /* Put Rcv buffer on system bus */
outw(0, IE_GP); /* Point GP at start of packet */
outb(0, IE_RBUF); /* set buffer byte 0 to 0 */
for (i = 1; i < 0xff; i++) {
outw(i << 8, IE_GP); /* Point GP at packet size to be tested */
outb(i, IE_RBUF);
outw(0x0, IE_GP); /* Point GP at start of packet */
data = inb(IE_RBUF);
if (data == i) break;
}
bufsize_rcv = i << 8;
outw(0, IE_GP); /* Point GP at start of packet */
outb(0, IE_RBUF); /* set buffer byte 0 to 0 again */
}
printk("-> bufsize rcv/xmt=%d/%d\n", bufsize_rcv, NI5010_BUFSIZE);
memset(dev->priv, 0, sizeof(struct ni5010_local));
dev->open = ni5010_open;
dev->stop = ni5010_close;
dev->hard_start_xmit = ni5010_send_packet;
dev->get_stats = ni5010_get_stats;
dev->set_multicast_list = ni5010_set_multicast_list;
dev->tx_timeout = ni5010_timeout;
dev->watchdog_timeo = HZ/20;
dev->flags &= ~IFF_MULTICAST; /* Multicast doesn't work */
/* Shut up the ni5010 */
outb(0, EDLC_RMASK); /* Mask all receive interrupts */
outb(0, EDLC_XMASK); /* Mask all xmit interrupts */
outb(0xff, EDLC_RCLR); /* Kill all pending rcv interrupts */
outb(0xff, EDLC_XCLR); /* Kill all pending xmt interrupts */
printk(KERN_INFO "%s: NI5010 found at 0x%x, using IRQ %d", dev->name, ioaddr, dev->irq);
if (dev->dma)
printk(" & DMA %d", dev->dma);
printk(".\n");
return 0;
out:
release_region(dev->base_addr, NI5010_IO_EXTENT);
return err;
}
/*
* Open/initialize the board. This is called (in the current kernel)
* sometime after booting when the 'ifconfig' program is run.
*
* This routine should set everything up anew at each open, even
* registers that "should" only need to be set once at boot, so that
* there is a non-reboot way to recover if something goes wrong.
*/
static int ni5010_open(struct net_device *dev)
{
int ioaddr = dev->base_addr;
int i;
PRINTK2((KERN_DEBUG "%s: entering ni5010_open()\n", dev->name));
if (request_irq(dev->irq, &ni5010_interrupt, 0, boardname, dev)) {
printk(KERN_WARNING "%s: Cannot get irq %#2x\n", dev->name, dev->irq);
return -EAGAIN;
}
PRINTK3((KERN_DEBUG "%s: passed open() #1\n", dev->name));
/*
* Always allocate the DMA channel after the IRQ,
* and clean up on failure.
*/
#ifdef JUMPERED_DMA
if (request_dma(dev->dma, cardname)) {
printk(KERN_WARNING "%s: Cannot get dma %#2x\n", dev->name, dev->dma);
free_irq(dev->irq, NULL);
return -EAGAIN;
}
#endif /* JUMPERED_DMA */
PRINTK3((KERN_DEBUG "%s: passed open() #2\n", dev->name));
/* Reset the hardware here. Don't forget to set the station address. */
outb(RS_RESET, EDLC_RESET); /* Hold up EDLC_RESET while configing board */
outb(0, IE_RESET); /* Hardware reset of ni5010 board */
outb(XMD_LBC, EDLC_XMODE); /* Only loopback xmits */
PRINTK3((KERN_DEBUG "%s: passed open() #3\n", dev->name));
/* Set the station address */
for(i = 0;i < 6; i++) {
outb(dev->dev_addr[i], EDLC_ADDR + i);
}
PRINTK3((KERN_DEBUG "%s: Initialising ni5010\n", dev->name));
outb(0, EDLC_XMASK); /* No xmit interrupts for now */
outb(XMD_IG_PAR | XMD_T_MODE | XMD_LBC, EDLC_XMODE);
/* Normal packet xmit mode */
outb(0xff, EDLC_XCLR); /* Clear all pending xmit interrupts */
outb(RMD_BROADCAST, EDLC_RMODE);
/* Receive broadcast and normal packets */
reset_receiver(dev); /* Ready ni5010 for receiving packets */
outb(0, EDLC_RESET); /* Un-reset the ni5010 */
netif_start_queue(dev);
if (NI5010_DEBUG) ni5010_show_registers(dev);
PRINTK((KERN_DEBUG "%s: open successful\n", dev->name));
return 0;
}
static void reset_receiver(struct net_device *dev)
{
int ioaddr = dev->base_addr;
PRINTK3((KERN_DEBUG "%s: resetting receiver\n", dev->name));
outw(0, IE_GP); /* Receive packet at start of buffer */
outb(0xff, EDLC_RCLR); /* Clear all pending rcv interrupts */
outb(0, IE_MMODE); /* Put EDLC to rcv buffer */
outb(MM_EN_RCV, IE_MMODE); /* Enable rcv */
outb(0xff, EDLC_RMASK); /* Enable all rcv interrupts */
}
static void ni5010_timeout(struct net_device *dev)
{
printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name,
tx_done(dev) ? "IRQ conflict" : "network cable problem");
/* Try to restart the adaptor. */
/* FIXME: Give it a real kick here */
chipset_init(dev, 1);
dev->trans_start = jiffies;
netif_wake_queue(dev);
}
static int ni5010_send_packet(struct sk_buff *skb, struct net_device *dev)
{
int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name));
/*
* Block sending
*/
netif_stop_queue(dev);
hardware_send_packet(dev, (unsigned char *)skb->data, skb->len, length-skb->len);
dev->trans_start = jiffies;
dev_kfree_skb (skb);
return 0;
}
/*
* The typical workload of the driver:
* Handle the network interface interrupts.
*/
static irqreturn_t ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
struct net_device *dev = dev_id;
struct ni5010_local *lp;
int ioaddr, status;
int xmit_was_error = 0;
PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name));
ioaddr = dev->base_addr;
lp = netdev_priv(dev);
spin_lock(&lp->lock);
status = inb(IE_ISTAT);
PRINTK3((KERN_DEBUG "%s: IE_ISTAT = %#02x\n", dev->name, status));
if ((status & IS_R_INT) == 0) ni5010_rx(dev);
if ((status & IS_X_INT) == 0) {
xmit_was_error = process_xmt_interrupt(dev);
}
if ((status & IS_DMA_INT) == 0) {
PRINTK((KERN_DEBUG "%s: DMA complete (?)\n", dev->name));
outb(0, IE_DMA_RST); /* Reset DMA int */
}
if (!xmit_was_error)
reset_receiver(dev);
spin_unlock(&lp->lock);
return IRQ_HANDLED;
}
static void dump_packet(void *buf, int len)
{
int i;
printk(KERN_DEBUG "Packet length = %#4x\n", len);
for (i = 0; i < len; i++){
if (i % 16 == 0) printk(KERN_DEBUG "%#4.4x", i);
if (i % 2 == 0) printk(" ");
printk("%2.2x", ((unsigned char *)buf)[i]);
if (i % 16 == 15) printk("\n");
}
printk("\n");
return;
}
/* We have a good packet, get it out of the buffer. */
static void ni5010_rx(struct net_device *dev)
{
struct ni5010_local *lp = netdev_priv(dev);
int ioaddr = dev->base_addr;
unsigned char rcv_stat;
struct sk_buff *skb;
int i_pkt_size;
PRINTK2((KERN_DEBUG "%s: entering ni5010_rx()\n", dev->name));
rcv_stat = inb(EDLC_RSTAT);
PRINTK3((KERN_DEBUG "%s: EDLC_RSTAT = %#2x\n", dev->name, rcv_stat));
if ( (rcv_stat & RS_VALID_BITS) != RS_PKT_OK) {
PRINTK((KERN_INFO "%s: receive error.\n", dev->name));
lp->stats.rx_errors++;
if (rcv_stat & RS_RUNT) lp->stats.rx_length_errors++;
if (rcv_stat & RS_ALIGN) lp->stats.rx_frame_errors++;
if (rcv_stat & RS_CRC_ERR) lp->stats.rx_crc_errors++;
if (rcv_stat & RS_OFLW) lp->stats.rx_fifo_errors++;
outb(0xff, EDLC_RCLR); /* Clear the interrupt */
return;
}
outb(0xff, EDLC_RCLR); /* Clear the interrupt */
i_pkt_size = inw(IE_RCNT);
if (i_pkt_size > ETH_FRAME_LEN || i_pkt_size < 10 ) {
PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n",
dev->name, i_pkt_size));
lp->stats.rx_errors++;
lp->stats.rx_length_errors++;
return;
}
/* Malloc up new buffer. */
skb = dev_alloc_skb(i_pkt_size + 3);
if (skb == NULL) {
printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
lp->stats.rx_dropped++;
return;
}
skb->dev = dev;
skb_reserve(skb, 2);
/* Read packet into buffer */
outb(MM_MUX, IE_MMODE); /* Rcv buffer to system bus */
outw(0, IE_GP); /* Seek to beginning of packet */
insb(IE_RBUF, skb_put(skb, i_pkt_size), i_pkt_size);
if (NI5010_DEBUG >= 4)
dump_packet(skb->data, skb->len);
skb->protocol = eth_type_trans(skb,dev);
netif_rx(skb);
dev->last_rx = jiffies;
lp->stats.rx_packets++;
lp->stats.rx_bytes += i_pkt_size;
PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n",
dev->name, i_pkt_size));
}
static int process_xmt_interrupt(struct net_device *dev)
{
struct ni5010_local *lp = netdev_priv(dev);
int ioaddr = dev->base_addr;
int xmit_stat;
PRINTK2((KERN_DEBUG "%s: entering process_xmt_interrupt\n", dev->name));
xmit_stat = inb(EDLC_XSTAT);
PRINTK3((KERN_DEBUG "%s: EDLC_XSTAT = %2.2x\n", dev->name, xmit_stat));
outb(0, EDLC_XMASK); /* Disable xmit IRQ's */
outb(0xff, EDLC_XCLR); /* Clear all pending xmit IRQ's */
if (xmit_stat & XS_COLL){
PRINTK((KERN_DEBUG "%s: collision detected, retransmitting\n",
dev->name));
outw(NI5010_BUFSIZE - lp->o_pkt_size, IE_GP);
/* outb(0, IE_MMODE); */ /* xmt buf on sysbus FIXME: needed ? */
outb(MM_EN_XMT | MM_MUX, IE_MMODE);
outb(XM_ALL, EDLC_XMASK); /* Enable xmt IRQ's */
lp->stats.collisions++;
return 1;
}
/* FIXME: handle other xmt error conditions */
lp->stats.tx_packets++;
lp->stats.tx_bytes += lp->o_pkt_size;
netif_wake_queue(dev);
PRINTK2((KERN_DEBUG "%s: sent packet, size=%#4.4x\n",
dev->name, lp->o_pkt_size));
return 0;
}
/* The inverse routine to ni5010_open(). */
static int ni5010_close(struct net_device *dev)
{
int ioaddr = dev->base_addr;
PRINTK2((KERN_DEBUG "%s: entering ni5010_close\n", dev->name));
#ifdef JUMPERED_INTERRUPTS
free_irq(dev->irq, NULL);
#endif
/* Put card in held-RESET state */
outb(0, IE_MMODE);
outb(RS_RESET, EDLC_RESET);
netif_stop_queue(dev);
PRINTK((KERN_DEBUG "%s: %s closed down\n", dev->name, boardname));
return 0;
}
/* Get the current statistics. This may be called with the card open or
closed. */
static struct net_device_stats *ni5010_get_stats(struct net_device *dev)
{
struct ni5010_local *lp = netdev_priv(dev);
PRINTK2((KERN_DEBUG "%s: entering ni5010_get_stats\n", dev->name));
if (NI5010_DEBUG) ni5010_show_registers(dev);
/* cli(); */
/* Update the statistics from the device registers. */
/* We do this in the interrupt handler */
/* sti(); */
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 ni5010_set_multicast_list(struct net_device *dev)
{
short ioaddr = dev->base_addr;
PRINTK2((KERN_DEBUG "%s: entering set_multicast_list\n", dev->name));
if (dev->flags&IFF_PROMISC || dev->flags&IFF_ALLMULTI) {
dev->flags |= IFF_PROMISC;
outb(RMD_PROMISC, EDLC_RMODE); /* Enable promiscuous mode */
PRINTK((KERN_DEBUG "%s: Entering promiscuous mode\n", dev->name));
} else if (dev->mc_list) {
/* Sorry, multicast not supported */
PRINTK((KERN_DEBUG "%s: No multicast, entering broadcast mode\n", dev->name));
outb(RMD_BROADCAST, EDLC_RMODE);
} else {
PRINTK((KERN_DEBUG "%s: Entering broadcast mode\n", dev->name));
outb(RMD_BROADCAST, EDLC_RMODE); /* Disable promiscuous mode, use normal mode */
}
}
static void hardware_send_packet(struct net_device *dev, char *buf, int length, int pad)
{
struct ni5010_local *lp = netdev_priv(dev);
int ioaddr = dev->base_addr;
unsigned long flags;
unsigned int buf_offs;
PRINTK2((KERN_DEBUG "%s: entering hardware_send_packet\n", dev->name));
if (length > ETH_FRAME_LEN) {
PRINTK((KERN_WARNING "%s: packet too large, not possible\n",
dev->name));
return;
}
if (NI5010_DEBUG) ni5010_show_registers(dev);
if (inb(IE_ISTAT) & IS_EN_XMT) {
PRINTK((KERN_WARNING "%s: sending packet while already transmitting, not possible\n",
dev->name));
return;
}
if (NI5010_DEBUG > 3) dump_packet(buf, length);
buf_offs = NI5010_BUFSIZE - length - pad;
spin_lock_irqsave(&lp->lock, flags);
lp->o_pkt_size = length + pad;
outb(0, EDLC_RMASK); /* Mask all receive interrupts */
outb(0, IE_MMODE); /* Put Xmit buffer on system bus */
outb(0xff, EDLC_RCLR); /* Clear out pending rcv interrupts */
outw(buf_offs, IE_GP); /* Point GP at start of packet */
outsb(IE_XBUF, buf, length); /* Put data in buffer */
while(pad--)
outb(0, IE_XBUF);
outw(buf_offs, IE_GP); /* Rewrite where packet starts */
/* should work without that outb() (Crynwr used it) */
/*outb(MM_MUX, IE_MMODE);*/ /* Xmt buffer to EDLC bus */
outb(MM_EN_XMT | MM_MUX, IE_MMODE); /* Begin transmission */
outb(XM_ALL, EDLC_XMASK); /* Cause interrupt after completion or fail */
spin_unlock_irqrestore(&lp->lock, flags);
netif_wake_queue(dev);
if (NI5010_DEBUG) ni5010_show_registers(dev);
}
static void chipset_init(struct net_device *dev, int startp)
{
/* FIXME: Move some stuff here */
PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name));
}
static void ni5010_show_registers(struct net_device *dev)
{
int ioaddr = dev->base_addr;
PRINTK3((KERN_DEBUG "%s: XSTAT %#2.2x\n", dev->name, inb(EDLC_XSTAT)));
PRINTK3((KERN_DEBUG "%s: XMASK %#2.2x\n", dev->name, inb(EDLC_XMASK)));
PRINTK3((KERN_DEBUG "%s: RSTAT %#2.2x\n", dev->name, inb(EDLC_RSTAT)));
PRINTK3((KERN_DEBUG "%s: RMASK %#2.2x\n", dev->name, inb(EDLC_RMASK)));
PRINTK3((KERN_DEBUG "%s: RMODE %#2.2x\n", dev->name, inb(EDLC_RMODE)));
PRINTK3((KERN_DEBUG "%s: XMODE %#2.2x\n", dev->name, inb(EDLC_XMODE)));
PRINTK3((KERN_DEBUG "%s: ISTAT %#2.2x\n", dev->name, inb(IE_ISTAT)));
}
#ifdef MODULE
static struct net_device *dev_ni5010;
module_param(io, int, 0);
module_param(irq, int, 0);
MODULE_PARM_DESC(io, "ni5010 I/O base address");
MODULE_PARM_DESC(irq, "ni5010 IRQ number");
static int __init ni5010_init_module(void)
{
PRINTK2((KERN_DEBUG "%s: entering init_module\n", boardname));
/*
if(io <= 0 || irq == 0){
printk(KERN_WARNING "%s: Autoprobing not allowed for modules.\n", boardname);
printk(KERN_WARNING "%s: Set symbols 'io' and 'irq'\n", boardname);
return -EINVAL;
}
*/
if (io <= 0){
printk(KERN_WARNING "%s: Autoprobing for modules is hazardous, trying anyway..\n", boardname);
}
PRINTK2((KERN_DEBUG "%s: init_module irq=%#2x, io=%#3x\n", boardname, irq, io));
dev_ni5010 = ni5010_probe(-1);
if (IS_ERR(dev_ni5010))
return PTR_ERR(dev_ni5010);
return 0;
}
static void __exit ni5010_cleanup_module(void)
{
PRINTK2((KERN_DEBUG "%s: entering cleanup_module\n", boardname));
unregister_netdev(dev_ni5010);
release_region(dev_ni5010->base_addr, NI5010_IO_EXTENT);
free_netdev(dev_ni5010);
}
module_init(ni5010_init_module);
module_exit(ni5010_cleanup_module);
#endif /* MODULE */
MODULE_LICENSE("GPL");
/*
* Local variables:
* compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c ni5010.c"
* version-control: t
* kept-new-versions: 5
* tab-width: 4
* End:
*/
