patch-2.1.67 linux/drivers/net/ni5010.c
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- Lines: 836
- Date:
Sat Nov 29 10:33:19 1997
- Orig file:
v2.1.66/linux/drivers/net/ni5010.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.1.66/linux/drivers/net/ni5010.c linux/drivers/net/ni5010.c
@@ -0,0 +1,835 @@
+/* ni5010.c: A network driver for the MiCom-Interlan NI5010 ethercard.
+ *
+ * Copyright 1996,1997 Jan-Pascal van Best and Andreas Mohr.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU Public License, incorporated herein by reference.
+ *
+ * The authors may be reached as:
+ * jvbest@wi.leidenuniv.nl a.mohr@mailto.de
+ * or by snail mail as
+ * Jan-Pascal van Best Andreas Mohr
+ * Klikspaanweg 58-4 Stauferstr. 6
+ * 2324 LZ Leiden D-71272 Renningen
+ * The Netherlands Germany
+ *
+ * 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)
+ * Bugs:
+ * - None known...
+ * - 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 says 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.o 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/malloc.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <asm/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 =
+ "ni5010.c: v1.00 06/23/97 Jan-Pascal van Best and Andreas Mohr\n";
+
+/* bufsize_rcv == 0 means autoprobing */
+unsigned int bufsize_rcv = 0;
+
+#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 ni5010_portlist[] __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;
+ int i_pkt_size;
+};
+
+/* Index to functions, as function prototypes. */
+
+extern int ni5010_probe(struct device *dev);
+static int ni5010_probe1(struct device *dev, int ioaddr);
+static int ni5010_open(struct device *dev);
+static int ni5010_send_packet(struct sk_buff *skb, struct device *dev);
+static void ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static void ni5010_rx(struct device *dev);
+static int ni5010_close(struct device *dev);
+static struct net_device_stats *ni5010_get_stats(struct device *dev);
+static void ni5010_set_multicast_list(struct device *dev);
+static void reset_receiver(struct device *dev);
+
+static int process_xmt_interrupt(struct device *dev);
+#define tx_done(dev) 1
+extern void hardware_send_packet(struct device *dev, char *buf, int length);
+extern void chipset_init(struct device *dev, int startp);
+static void dump_packet(void *buf, int len);
+static void show_registers(struct device *dev);
+
+
+__initfunc(int ni5010_probe(struct device *dev))
+{
+ int *port;
+
+ int base_addr = dev ? dev->base_addr : 0;
+
+ PRINTK2((KERN_DEBUG "%s: Entering ni5010_probe\n", dev->name));
+
+ if (base_addr > 0x1ff) /* Check a single specified location. */
+ return ni5010_probe1(dev, base_addr);
+ else if (base_addr != 0) /* Don't probe at all. */
+ return -ENXIO;
+
+#ifdef FULL_IODETECT
+ for (int ioaddr=0x200; ioaddr<0x400; ioaddr+=0x20) {
+ if (check_region(ioaddr, NI5010_IO_EXTENT))
+ continue;
+ if (ni5010_probe1(dev, ioaddr) == 0)
+ return 0;
+ }
+#else
+ for (port = ni5010_portlist; *port; port++) {
+ int ioaddr = *port;
+ if (check_region(ioaddr, NI5010_IO_EXTENT))
+ continue;
+ if (ni5010_probe1(dev, ioaddr) == 0)
+ return 0;
+ }
+#endif /* FULL_IODETECT */
+ return -ENODEV;
+}
+
+static inline int rd_port(int ioaddr)
+{
+ inb(IE_RBUF);
+ return inb(IE_SAPROM);
+}
+
+__initfunc(void 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.
+ */
+
+__initfunc(static int ni5010_probe1(struct device *dev, int ioaddr))
+{
+ static unsigned version_printed = 0;
+ int i;
+ unsigned int data;
+ int boguscount = 40;
+
+ /*
+ * 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) return -ENODEV;
+
+ while ( (rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr) &
+ rd_port(ioaddr) & rd_port(ioaddr) & rd_port(ioaddr)) != 0xff)
+ {
+ if (boguscount-- == 0) return -ENODEV;
+ }
+
+ 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) return -ENODEV;
+
+ 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) ) {
+ for (i=0; i<4; i++) rd_port(ioaddr);
+ if ( (rd_port(ioaddr) != NI5010_MAGICVAL1) ||
+ (rd_port(ioaddr) != NI5010_MAGICVAL2) ) {
+ return -ENODEV;
+ }
+ } else return -ENODEV;
+
+ PRINTK2((KERN_DEBUG "%s: I/O #3 passed!\n", dev->name));
+
+ if (dev == NULL) {
+ dev = init_etherdev(0,0);
+ if (dev == NULL) {
+ printk(KERN_WARNING "%s: Failed to allocate device memory\n", boardname);
+ return -ENOMEM;
+ }
+ }
+
+ 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) {
+ PRINTK2((KERN_DEBUG "%s: I/O #5 passed!\n", dev->name));
+
+ autoirq_setup(0);
+ trigger_irq(ioaddr);
+ dev->irq = autoirq_report(2);
+
+ PRINTK2((KERN_DEBUG "%s: I/O #6 passed!\n", dev->name));
+
+ if (dev->irq == 0) {
+ printk(KERN_WARNING "%s: no IRQ found!\n", dev->name);
+ return -EAGAIN;
+ }
+ PRINTK2((KERN_DEBUG "%s: I/O #7 passed!\n", dev->name));
+ } else if (dev->irq == 2) {
+ dev->irq = 9;
+ }
+#endif /* jumpered_irq */
+ PRINTK2((KERN_DEBUG "%s: I/O #9 passed!\n", dev->name));
+
+ /* DMA is not supported (yet?), so no use detecting it */
+
+ if (dev->priv == NULL) {
+ dev->priv = kmalloc(sizeof(struct ni5010_local), GFP_KERNEL|GFP_DMA);
+ if (dev->priv == NULL) {
+ printk(KERN_WARNING "%s: Failed to allocate private memory\n", dev->name);
+ return -ENOMEM;
+ }
+ }
+
+ 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));
+
+ /* Grab the region so we can find another board if autoIRQ fails. */
+ request_region(ioaddr, NI5010_IO_EXTENT, boardname);
+
+ 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;
+
+ /* Fill in the fields of the device structure with ethernet values. */
+ ether_setup(dev);
+
+ dev->tbusy = 0;
+ dev->interrupt = 0;
+ dev->start = 0;
+
+ 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");
+
+ printk(KERN_INFO "Join the NI5010 driver development team!\n");
+ printk(KERN_INFO "Mail to a.mohr@mailto.de or jvbest@wi.leidenuniv.nl\n");
+ return 0;
+}
+
+/*
+ * 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 non-reboot way to recover if something goes wrong.
+ */
+
+static int ni5010_open(struct 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 */
+
+ dev->tbusy = 0;
+ dev->interrupt = 0;
+ dev->start = 1;
+
+ if (NI5010_DEBUG) show_registers(dev);
+
+ MOD_INC_USE_COUNT;
+ PRINTK((KERN_DEBUG "%s: open successful\n", dev->name));
+ return 0;
+}
+
+static void reset_receiver(struct 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 int ni5010_send_packet(struct sk_buff *skb, struct device *dev)
+{
+ PRINTK2((KERN_DEBUG "%s: entering ni5010_send_packet\n", dev->name));
+ if (dev->tbusy) {
+ /*
+ * If we get here, some higher level has decided we are broken.
+ * There should really be a "kick me" function call instead.
+ */
+ int tickssofar = jiffies - dev->trans_start;
+ if (tickssofar < 5)
+ return 1;
+ printk("tbusy\n");
+ 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->tbusy=0;
+ dev->trans_start = jiffies;
+ }
+
+ /*
+ * Block a timer-based transmit from overlapping. This could better be
+ * done with atomic_swap(1, dev->tbusy), but test_and_set_bit() works as well.
+ */
+ if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) {
+ printk(KERN_WARNING "%s: Transmitter access conflict.\n", dev->name);
+ return 1;
+ } else {
+ int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
+
+ hardware_send_packet(dev, (unsigned char *)skb->data, length);
+ dev->trans_start = jiffies;
+ }
+ dev_kfree_skb (skb, FREE_WRITE);
+
+ return 0;
+}
+
+/*
+ * The typical workload of the driver:
+ * Handle the network interface interrupts.
+ */
+static void
+ni5010_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct device *dev = dev_id;
+ struct ni5010_local *lp;
+ int ioaddr, status;
+ int xmit_was_error = 0;
+
+ if (dev == NULL || dev->irq != irq) {
+ printk(KERN_WARNING "%s: irq %d for unknown device.\n",
+ boardname, irq);
+ return;
+ }
+
+ if (dev->interrupt) printk(KERN_WARNING "%s: Reentering IRQ-handler!\n", dev->name);
+ dev->interrupt = 1;
+
+ PRINTK2((KERN_DEBUG "%s: entering ni5010_interrupt\n", dev->name));
+
+ ioaddr = dev->base_addr;
+ lp = (struct ni5010_local *)dev->priv;
+
+ 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);
+
+ dev->interrupt = 0;
+ return;
+}
+
+
+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 device *dev)
+{
+ struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
+ int ioaddr = dev->base_addr;
+ unsigned char rcv_stat;
+ struct sk_buff *skb;
+
+ 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 */
+
+ lp->i_pkt_size = inw(IE_RCNT);
+ if (lp->i_pkt_size > ETH_FRAME_LEN || lp->i_pkt_size < 10 ) {
+ PRINTK((KERN_DEBUG "%s: Packet size error, packet size = %#4.4x\n",
+ dev->name, lp->i_pkt_size));
+ lp->stats.rx_errors++;
+ lp->stats.rx_length_errors++;
+ return;
+ }
+
+ /* Malloc up new buffer. */
+ skb = dev_alloc_skb(lp->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, lp->i_pkt_size), lp->i_pkt_size);
+
+ if (NI5010_DEBUG >= 4)
+ dump_packet(skb->data, skb->len);
+
+ skb->protocol = eth_type_trans(skb,dev);
+ netif_rx(skb);
+ lp->stats.rx_packets++;
+ lp->stats.rx_bytes += lp->i_pkt_size;
+
+ PRINTK2((KERN_DEBUG "%s: Received packet, size=%#4.4x\n",
+ dev->name, lp->i_pkt_size));
+
+}
+
+static int process_xmt_interrupt(struct device *dev)
+{
+ struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
+ 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("ether collision\n"); /* FIXME: remove */
+ 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;
+ dev->tbusy = 0;
+ mark_bh(NET_BH); /* Inform upper layers. */
+
+ 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 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);
+
+ dev->tbusy = 1;
+ dev->start = 0;
+
+ MOD_DEC_USE_COUNT;
+ 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 device *dev)
+{
+ struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
+
+ PRINTK2((KERN_DEBUG "%s: entering ni5010_get_stats\n", dev->name));
+
+ if (NI5010_DEBUG) 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 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 */
+ }
+}
+
+extern void hardware_send_packet(struct device *dev, char *buf, int length)
+{
+ struct ni5010_local *lp = (struct ni5010_local *)dev->priv;
+ 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) 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;
+ lp->o_pkt_size = length;
+
+ save_flags(flags);
+ cli();
+
+ 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 */
+ 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 */
+
+ restore_flags(flags);
+
+ if (NI5010_DEBUG) show_registers(dev);
+}
+
+extern void chipset_init(struct device *dev, int startp)
+{
+ /* FIXME: Move some stuff here */
+ PRINTK3((KERN_DEBUG "%s: doing NOTHING in chipset_init\n", dev->name));
+}
+
+static void show_registers(struct 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 device dev_ni5010 = {
+ " ",
+ 0, 0, 0, 0,
+ 0, 0,
+ 0, 0, 0, NULL, ni5010_probe };
+
+int io = 0;
+int irq = 0;
+
+MODULE_PARM(io, "i");
+MODULE_PARM(irq, "i");
+
+int init_module(void)
+{
+ int result;
+
+ 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.irq=irq;
+ dev_ni5010.base_addr=io;
+ if ((result = register_netdev(&dev_ni5010)) != 0) {
+ PRINTK((KERN_WARNING "%s: register_netdev returned %d.\n",
+ boardname, result));
+ return -EIO;
+ }
+ return 0;
+}
+
+void
+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);
+ if (dev_ni5010.priv != NULL){
+ kfree(dev_ni5010.priv);
+ dev_ni5010.priv = NULL;
+ }
+}
+#endif /* MODULE */
+
+/*
+ * 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:
+ */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov