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-rw-r--r--drivers/net/ni52.c1386
1 files changed, 1386 insertions, 0 deletions
diff --git a/drivers/net/ni52.c b/drivers/net/ni52.c
new file mode 100644
index 0000000..fa854c8
--- /dev/null
+++ b/drivers/net/ni52.c
@@ -0,0 +1,1386 @@
+/*
+ * net-3-driver for the NI5210 card (i82586 Ethernet chip)
+ *
+ * This is an extension to the Linux operating system, and is covered by the
+ * same GNU General Public License that covers that work.
+ *
+ * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later)
+ * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de)
+ * [feel free to mail ....]
+ *
+ * when using as module: (no autoprobing!)
+ * compile with:
+ * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni52.c
+ * run with e.g:
+ * insmod ni52.o io=0x360 irq=9 memstart=0xd0000 memend=0xd4000
+ *
+ * CAN YOU PLEASE REPORT ME YOUR PERFORMANCE EXPERIENCES !!.
+ *
+ * If you find a bug, please report me:
+ * The kernel panic output and any kmsg from the ni52 driver
+ * the ni5210-driver-version and the linux-kernel version
+ * how many shared memory (memsize) on the netcard,
+ * bootprom: yes/no, base_addr, mem_start
+ * maybe the ni5210-card revision and the i82586 version
+ *
+ * autoprobe for: base_addr: 0x300,0x280,0x360,0x320,0x340
+ * mem_start: 0xd0000,0xd2000,0xc8000,0xca000,0xd4000,0xd6000,
+ * 0xd8000,0xcc000,0xce000,0xda000,0xdc000
+ *
+ * sources:
+ * skeleton.c from Donald Becker
+ *
+ * I have also done a look in the following sources: (mail me if you need them)
+ * crynwr-packet-driver by Russ Nelson
+ * Garret A. Wollman's (fourth) i82586-driver for BSD
+ * (before getting an i82596 (yes 596 not 586) manual, the existing drivers helped
+ * me a lot to understand this tricky chip.)
+ *
+ * Known Problems:
+ * The internal sysbus seems to be slow. So we often lose packets because of
+ * overruns while receiving from a fast remote host.
+ * This can slow down TCP connections. Maybe the newer ni5210 cards are better.
+ * my experience is, that if a machine sends with more than about 500-600K/s
+ * the fifo/sysbus overflows.
+ *
+ * IMPORTANT NOTE:
+ * On fast networks, it's a (very) good idea to have 16K shared memory. With
+ * 8K, we can store only 4 receive frames, so it can (easily) happen that a remote
+ * machine 'overruns' our system.
+ *
+ * Known i82586/card problems (I'm sure, there are many more!):
+ * Running the NOP-mode, the i82586 sometimes seems to forget to report
+ * every xmit-interrupt until we restart the CU.
+ * Another MAJOR bug is, that the RU sometimes seems to ignore the EL-Bit
+ * in the RBD-Struct which indicates an end of the RBD queue.
+ * Instead, the RU fetches another (randomly selected and
+ * usually used) RBD and begins to fill it. (Maybe, this happens only if
+ * the last buffer from the previous RFD fits exact into the queue and
+ * the next RFD can't fetch an initial RBD. Anyone knows more? )
+ *
+ * results from ftp performance tests with Linux 1.2.5
+ * send and receive about 350-400 KByte/s (peak up to 460 kbytes/s)
+ * sending in NOP-mode: peak performance up to 530K/s (but better don't run this mode)
+ */
+
+/*
+ * 29.Sept.96: virt_to_bus changes for new memory scheme
+ * 19.Feb.96: more Mcast changes, module support (MH)
+ *
+ * 18.Nov.95: Mcast changes (AC).
+ *
+ * 23.April.95: fixed(?) receiving problems by configuring a RFD more
+ * than the number of RBD's. Can maybe cause other problems.
+ * 18.April.95: Added MODULE support (MH)
+ * 17.April.95: MC related changes in init586() and set_multicast_list().
+ * removed use of 'jiffies' in init586() (MH)
+ *
+ * 19.Sep.94: Added Multicast support (not tested yet) (MH)
+ *
+ * 18.Sep.94: Workaround for 'EL-Bug'. Removed flexible RBD-handling.
+ * Now, every RFD has exact one RBD. (MH)
+ *
+ * 14.Sep.94: added promiscuous mode, a few cleanups (MH)
+ *
+ * 19.Aug.94: changed request_irq() parameter (MH)
+ *
+ * 20.July.94: removed cleanup bugs, removed a 16K-mem-probe-bug (MH)
+ *
+ * 19.July.94: lotsa cleanups .. (MH)
+ *
+ * 17.July.94: some patches ... verified to run with 1.1.29 (MH)
+ *
+ * 4.July.94: patches for Linux 1.1.24 (MH)
+ *
+ * 26.March.94: patches for Linux 1.0 and iomem-auto-probe (MH)
+ *
+ * 30.Sep.93: Added nop-chain .. driver now runs with only one Xmit-Buff, too (MH)
+ *
+ * < 30.Sep.93: first versions
+ */
+
+static int debuglevel; /* debug-printk 0: off 1: a few 2: more */
+static int automatic_resume; /* experimental .. better should be zero */
+static int rfdadd; /* rfdadd=1 may be better for 8K MEM cards */
+static int fifo=0x8; /* don't change */
+
+/* #define REALLY_SLOW_IO */
+
+#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 <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include "ni52.h"
+
+#define DRV_NAME "ni52"
+
+#define DEBUG /* debug on */
+#define SYSBUSVAL 1 /* 8 Bit */
+
+#define ni_attn586() {outb(0,dev->base_addr+NI52_ATTENTION);}
+#define ni_reset586() {outb(0,dev->base_addr+NI52_RESET);}
+#define ni_disint() {outb(0,dev->base_addr+NI52_INTDIS);}
+#define ni_enaint() {outb(0,dev->base_addr+NI52_INTENA);}
+
+#define make32(ptr16) (p->memtop + (short) (ptr16) )
+#define make24(ptr32) ( ((char *) (ptr32)) - p->base)
+#define make16(ptr32) ((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop ))
+
+/******************* how to calculate the buffers *****************************
+
+ * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
+ * --------------- in a different (more stable?) mode. Only in this mode it's
+ * possible to configure the driver with 'NO_NOPCOMMANDS'
+
+sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
+sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
+sizeof(rfd) = 24; sizeof(rbd) = 12;
+sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
+sizeof(nop_cmd) = 8;
+
+ * if you don't know the driver, better do not change these values: */
+
+#define RECV_BUFF_SIZE 1524 /* slightly oversized */
+#define XMIT_BUFF_SIZE 1524 /* slightly oversized */
+#define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */
+#define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */
+#define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */
+#define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
+
+/**************************************************************************/
+
+/* different DELAYs */
+#define DELAY(x) mdelay(32 * x);
+#define DELAY_16(); { udelay(16); }
+#define DELAY_18(); { udelay(4); }
+
+/* wait for command with timeout: */
+#define WAIT_4_SCB_CMD() \
+{ int i; \
+ for(i=0;i<16384;i++) { \
+ if(!p->scb->cmd_cuc) break; \
+ DELAY_18(); \
+ if(i == 16383) { \
+ printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
+ if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } }
+
+#define WAIT_4_SCB_CMD_RUC() { int i; \
+ for(i=0;i<16384;i++) { \
+ if(!p->scb->cmd_ruc) break; \
+ DELAY_18(); \
+ if(i == 16383) { \
+ printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
+ if(!p->reseted) { p->reseted = 1; ni_reset586(); } } } }
+
+#define WAIT_4_STAT_COMPL(addr) { int i; \
+ for(i=0;i<32767;i++) { \
+ if((addr)->cmd_status & STAT_COMPL) break; \
+ DELAY_16(); DELAY_16(); } }
+
+#define NI52_TOTAL_SIZE 16
+#define NI52_ADDR0 0x02
+#define NI52_ADDR1 0x07
+#define NI52_ADDR2 0x01
+
+static int ni52_probe1(struct net_device *dev,int ioaddr);
+static irqreturn_t ni52_interrupt(int irq,void *dev_id,struct pt_regs *reg_ptr);
+static int ni52_open(struct net_device *dev);
+static int ni52_close(struct net_device *dev);
+static int ni52_send_packet(struct sk_buff *,struct net_device *);
+static struct net_device_stats *ni52_get_stats(struct net_device *dev);
+static void set_multicast_list(struct net_device *dev);
+static void ni52_timeout(struct net_device *dev);
+#if 0
+static void ni52_dump(struct net_device *,void *);
+#endif
+
+/* helper-functions */
+static int init586(struct net_device *dev);
+static int check586(struct net_device *dev,char *where,unsigned size);
+static void alloc586(struct net_device *dev);
+static void startrecv586(struct net_device *dev);
+static void *alloc_rfa(struct net_device *dev,void *ptr);
+static void ni52_rcv_int(struct net_device *dev);
+static void ni52_xmt_int(struct net_device *dev);
+static void ni52_rnr_int(struct net_device *dev);
+
+struct priv
+{
+ struct net_device_stats stats;
+ unsigned long base;
+ char *memtop;
+ long int lock;
+ int reseted;
+ volatile struct rfd_struct *rfd_last,*rfd_top,*rfd_first;
+ volatile struct scp_struct *scp; /* volatile is important */
+ volatile struct iscp_struct *iscp; /* volatile is important */
+ volatile struct scb_struct *scb; /* volatile is important */
+ volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS];
+#if (NUM_XMIT_BUFFS == 1)
+ volatile struct transmit_cmd_struct *xmit_cmds[2];
+ volatile struct nop_cmd_struct *nop_cmds[2];
+#else
+ volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
+ volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
+#endif
+ volatile int nop_point,num_recv_buffs;
+ volatile char *xmit_cbuffs[NUM_XMIT_BUFFS];
+ volatile int xmit_count,xmit_last;
+};
+
+/**********************************************
+ * close device
+ */
+static int ni52_close(struct net_device *dev)
+{
+ free_irq(dev->irq, dev);
+
+ ni_reset586(); /* the hard way to stop the receiver */
+
+ netif_stop_queue(dev);
+
+ return 0;
+}
+
+/**********************************************
+ * open device
+ */
+static int ni52_open(struct net_device *dev)
+{
+ int ret;
+
+ ni_disint();
+ alloc586(dev);
+ init586(dev);
+ startrecv586(dev);
+ ni_enaint();
+
+ ret = request_irq(dev->irq, &ni52_interrupt,0,dev->name,dev);
+ if (ret)
+ {
+ ni_reset586();
+ return ret;
+ }
+
+ netif_start_queue(dev);
+
+ return 0; /* most done by init */
+}
+
+/**********************************************
+ * Check to see if there's an 82586 out there.
+ */
+static int check586(struct net_device *dev,char *where,unsigned size)
+{
+ struct priv pb;
+ struct priv *p = /* (struct priv *) dev->priv*/ &pb;
+ char *iscp_addrs[2];
+ int i;
+
+ p->base = (unsigned long) isa_bus_to_virt((unsigned long)where) + size - 0x01000000;
+ p->memtop = isa_bus_to_virt((unsigned long)where) + size;
+ p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
+ memset((char *)p->scp,0, sizeof(struct scp_struct));
+ for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
+ if(((char *)p->scp)[i])
+ return 0;
+ p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */
+ if(p->scp->sysbus != SYSBUSVAL)
+ return 0;
+
+ iscp_addrs[0] = isa_bus_to_virt((unsigned long)where);
+ iscp_addrs[1]= (char *) p->scp - sizeof(struct iscp_struct);
+
+ for(i=0;i<2;i++)
+ {
+ p->iscp = (struct iscp_struct *) iscp_addrs[i];
+ memset((char *)p->iscp,0, sizeof(struct iscp_struct));
+
+ p->scp->iscp = make24(p->iscp);
+ p->iscp->busy = 1;
+
+ ni_reset586();
+ ni_attn586();
+ DELAY(1); /* wait a while... */
+
+ if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
+ return 0;
+ }
+ return 1;
+}
+
+/******************************************************************
+ * set iscp at the right place, called by ni52_probe1 and open586.
+ */
+static void alloc586(struct net_device *dev)
+{
+ struct priv *p = (struct priv *) dev->priv;
+
+ ni_reset586();
+ DELAY(1);
+
+ p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
+ p->scb = (struct scb_struct *) isa_bus_to_virt(dev->mem_start);
+ p->iscp = (struct iscp_struct *) ((char *)p->scp - sizeof(struct iscp_struct));
+
+ memset((char *) p->iscp,0,sizeof(struct iscp_struct));
+ memset((char *) p->scp ,0,sizeof(struct scp_struct));
+
+ p->scp->iscp = make24(p->iscp);
+ p->scp->sysbus = SYSBUSVAL;
+ p->iscp->scb_offset = make16(p->scb);
+
+ p->iscp->busy = 1;
+ ni_reset586();
+ ni_attn586();
+
+ DELAY(1);
+
+ if(p->iscp->busy)
+ printk("%s: Init-Problems (alloc).\n",dev->name);
+
+ p->reseted = 0;
+
+ memset((char *)p->scb,0,sizeof(struct scb_struct));
+}
+
+/* set: io,irq,memstart,memend or set it when calling insmod */
+static int irq=9;
+static int io=0x300;
+static long memstart; /* e.g 0xd0000 */
+static long memend; /* e.g 0xd4000 */
+
+/**********************************************
+ * probe the ni5210-card
+ */
+struct net_device * __init ni52_probe(int unit)
+{
+ struct net_device *dev = alloc_etherdev(sizeof(struct priv));
+ static int ports[] = {0x300, 0x280, 0x360 , 0x320 , 0x340, 0};
+ 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;
+ memstart = dev->mem_start;
+ memend = dev->mem_end;
+ }
+
+ SET_MODULE_OWNER(dev);
+
+ if (io > 0x1ff) { /* Check a single specified location. */
+ err = ni52_probe1(dev, io);
+ } else if (io > 0) { /* Don't probe at all. */
+ err = -ENXIO;
+ } else {
+ for (port = ports; *port && ni52_probe1(dev, *port) ; port++)
+ ;
+ if (*port)
+ goto got_it;
+#ifdef FULL_IO_PROBE
+ for (io = 0x200; io < 0x400 && ni52_probe1(dev, io); io += 8)
+ ;
+ if (io < 0x400)
+ goto got_it;
+#endif
+ err = -ENODEV;
+ }
+ if (err)
+ goto out;
+got_it:
+ err = register_netdev(dev);
+ if (err)
+ goto out1;
+ return dev;
+out1:
+ release_region(dev->base_addr, NI52_TOTAL_SIZE);
+out:
+ free_netdev(dev);
+ return ERR_PTR(err);
+}
+
+static int __init ni52_probe1(struct net_device *dev,int ioaddr)
+{
+ int i, size, retval;
+
+ dev->base_addr = ioaddr;
+ dev->irq = irq;
+ dev->mem_start = memstart;
+ dev->mem_end = memend;
+
+ if (!request_region(ioaddr, NI52_TOTAL_SIZE, DRV_NAME))
+ return -EBUSY;
+
+ if( !(inb(ioaddr+NI52_MAGIC1) == NI52_MAGICVAL1) ||
+ !(inb(ioaddr+NI52_MAGIC2) == NI52_MAGICVAL2)) {
+ retval = -ENODEV;
+ goto out;
+ }
+
+ for(i=0;i<ETH_ALEN;i++)
+ dev->dev_addr[i] = inb(dev->base_addr+i);
+
+ if(dev->dev_addr[0] != NI52_ADDR0 || dev->dev_addr[1] != NI52_ADDR1
+ || dev->dev_addr[2] != NI52_ADDR2) {
+ retval = -ENODEV;
+ goto out;
+ }
+
+ printk(KERN_INFO "%s: NI5210 found at %#3lx, ",dev->name,dev->base_addr);
+
+ /*
+ * check (or search) IO-Memory, 8K and 16K
+ */
+#ifdef MODULE
+ size = dev->mem_end - dev->mem_start;
+ if(size != 0x2000 && size != 0x4000) {
+ printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n",dev->name,size);
+ retval = -ENODEV;
+ goto out;
+ }
+ if(!check586(dev,(char *) dev->mem_start,size)) {
+ printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
+ retval = -ENODEV;
+ goto out;
+ }
+#else
+ if(dev->mem_start != 0) /* no auto-mem-probe */
+ {
+ size = 0x4000; /* check for 16K mem */
+ if(!check586(dev,(char *) dev->mem_start,size)) {
+ size = 0x2000; /* check for 8K mem */
+ if(!check586(dev,(char *) dev->mem_start,size)) {
+ printk("?memprobe, Can't find memory at 0x%lx!\n",dev->mem_start);
+ retval = -ENODEV;
+ goto out;
+ }
+ }
+ }
+ else
+ {
+ static long memaddrs[] = { 0xc8000,0xca000,0xcc000,0xce000,0xd0000,0xd2000,
+ 0xd4000,0xd6000,0xd8000,0xda000,0xdc000, 0 };
+ for(i=0;;i++)
+ {
+ if(!memaddrs[i]) {
+ printk("?memprobe, Can't find io-memory!\n");
+ retval = -ENODEV;
+ goto out;
+ }
+ dev->mem_start = memaddrs[i];
+ size = 0x2000; /* check for 8K mem */
+ if(check586(dev,(char *)dev->mem_start,size)) /* 8K-check */
+ break;
+ size = 0x4000; /* check for 16K mem */
+ if(check586(dev,(char *)dev->mem_start,size)) /* 16K-check */
+ break;
+ }
+ }
+ dev->mem_end = dev->mem_start + size; /* set mem_end showed by 'ifconfig' */
+#endif
+
+ memset((char *) dev->priv,0,sizeof(struct priv));
+
+ ((struct priv *) (dev->priv))->memtop = isa_bus_to_virt(dev->mem_start) + size;
+ ((struct priv *) (dev->priv))->base = (unsigned long) isa_bus_to_virt(dev->mem_start) + size - 0x01000000;
+ alloc586(dev);
+
+ /* set number of receive-buffs according to memsize */
+ if(size == 0x2000)
+ ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8;
+ else
+ ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16;
+
+ printk("Memaddr: 0x%lx, Memsize: %d, ",dev->mem_start,size);
+
+ if(dev->irq < 2)
+ {
+ unsigned long irq_mask;
+
+ irq_mask = probe_irq_on();
+ ni_reset586();
+ ni_attn586();
+
+ mdelay(20);
+ dev->irq = probe_irq_off(irq_mask);
+ if(!dev->irq)
+ {
+ printk("?autoirq, Failed to detect IRQ line!\n");
+ retval = -EAGAIN;
+ goto out;
+ }
+ printk("IRQ %d (autodetected).\n",dev->irq);
+ }
+ else {
+ if(dev->irq == 2)
+ dev->irq = 9;
+ printk("IRQ %d (assigned and not checked!).\n",dev->irq);
+ }
+
+ dev->open = ni52_open;
+ dev->stop = ni52_close;
+ dev->get_stats = ni52_get_stats;
+ dev->tx_timeout = ni52_timeout;
+ dev->watchdog_timeo = HZ/20;
+ dev->hard_start_xmit = ni52_send_packet;
+ dev->set_multicast_list = set_multicast_list;
+
+ dev->if_port = 0;
+
+ return 0;
+out:
+ release_region(ioaddr, NI52_TOTAL_SIZE);
+ return retval;
+}
+
+/**********************************************
+ * init the chip (ni52-interrupt should be disabled?!)
+ * needs a correct 'allocated' memory
+ */
+
+static int init586(struct net_device *dev)
+{
+ void *ptr;
+ int i,result=0;
+ struct priv *p = (struct priv *) dev->priv;
+ volatile struct configure_cmd_struct *cfg_cmd;
+ volatile struct iasetup_cmd_struct *ias_cmd;
+ volatile struct tdr_cmd_struct *tdr_cmd;
+ volatile struct mcsetup_cmd_struct *mc_cmd;
+ struct dev_mc_list *dmi=dev->mc_list;
+ int num_addrs=dev->mc_count;
+
+ ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
+
+ cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
+ cfg_cmd->cmd_status = 0;
+ cfg_cmd->cmd_cmd = CMD_CONFIGURE | CMD_LAST;
+ cfg_cmd->cmd_link = 0xffff;
+
+ cfg_cmd->byte_cnt = 0x0a; /* number of cfg bytes */
+ cfg_cmd->fifo = fifo; /* fifo-limit (8=tx:32/rx:64) */
+ cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */
+ cfg_cmd->adr_len = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
+ cfg_cmd->priority = 0x00;
+ cfg_cmd->ifs = 0x60;
+ cfg_cmd->time_low = 0x00;
+ cfg_cmd->time_high = 0xf2;
+ cfg_cmd->promisc = 0;
+ if(dev->flags & IFF_ALLMULTI) {
+ int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
+ if(num_addrs > len) {
+ printk("%s: switching to promisc. mode\n",dev->name);
+ dev->flags|=IFF_PROMISC;
+ }
+ }
+ if(dev->flags&IFF_PROMISC)
+ {
+ cfg_cmd->promisc=1;
+ dev->flags|=IFF_PROMISC;
+ }
+ cfg_cmd->carr_coll = 0x00;
+
+ p->scb->cbl_offset = make16(cfg_cmd);
+ p->scb->cmd_ruc = 0;
+
+ p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
+ ni_attn586();
+
+ WAIT_4_STAT_COMPL(cfg_cmd);
+
+ if((cfg_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
+ {
+ printk("%s: configure command failed: %x\n",dev->name,cfg_cmd->cmd_status);
+ return 1;
+ }
+
+ /*
+ * individual address setup
+ */
+
+ ias_cmd = (struct iasetup_cmd_struct *)ptr;
+
+ ias_cmd->cmd_status = 0;
+ ias_cmd->cmd_cmd = CMD_IASETUP | CMD_LAST;
+ ias_cmd->cmd_link = 0xffff;
+
+ memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
+
+ p->scb->cbl_offset = make16(ias_cmd);
+
+ p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
+ ni_attn586();
+
+ WAIT_4_STAT_COMPL(ias_cmd);
+
+ if((ias_cmd->cmd_status & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
+ printk("%s (ni52): individual address setup command failed: %04x\n",dev->name,ias_cmd->cmd_status);
+ return 1;
+ }
+
+ /*
+ * TDR, wire check .. e.g. no resistor e.t.c
+ */
+
+ tdr_cmd = (struct tdr_cmd_struct *)ptr;
+
+ tdr_cmd->cmd_status = 0;
+ tdr_cmd->cmd_cmd = CMD_TDR | CMD_LAST;
+ tdr_cmd->cmd_link = 0xffff;
+ tdr_cmd->status = 0;
+
+ p->scb->cbl_offset = make16(tdr_cmd);
+ p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
+ ni_attn586();
+
+ WAIT_4_STAT_COMPL(tdr_cmd);
+
+ if(!(tdr_cmd->cmd_status & STAT_COMPL))
+ {
+ printk("%s: Problems while running the TDR.\n",dev->name);
+ }
+ else
+ {
+ DELAY_16(); /* wait for result */
+ result = tdr_cmd->status;
+
+ p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
+ ni_attn586(); /* ack the interrupts */
+
+ if(result & TDR_LNK_OK)
+ ;
+ else if(result & TDR_XCVR_PRB)
+ printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
+ else if(result & TDR_ET_OPN)
+ printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
+ else if(result & TDR_ET_SRT)
+ {
+ if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
+ printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
+ }
+ else
+ printk("%s: TDR: Unknown status %04x\n",dev->name,result);
+ }
+
+ /*
+ * Multicast setup
+ */
+ if(num_addrs && !(dev->flags & IFF_PROMISC) )
+ {
+ mc_cmd = (struct mcsetup_cmd_struct *) ptr;
+ mc_cmd->cmd_status = 0;
+ mc_cmd->cmd_cmd = CMD_MCSETUP | CMD_LAST;
+ mc_cmd->cmd_link = 0xffff;
+ mc_cmd->mc_cnt = num_addrs * 6;
+
+ for(i=0;i<num_addrs;i++,dmi=dmi->next)
+ memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6);
+
+ p->scb->cbl_offset = make16(mc_cmd);
+ p->scb->cmd_cuc = CUC_START;
+ ni_attn586();
+
+ WAIT_4_STAT_COMPL(mc_cmd);
+
+ if( (mc_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
+ printk("%s: Can't apply multicast-address-list.\n",dev->name);
+ }
+
+ /*
+ * alloc nop/xmit-cmds
+ */
+#if (NUM_XMIT_BUFFS == 1)
+ for(i=0;i<2;i++)
+ {
+ p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
+ p->nop_cmds[i]->cmd_cmd = CMD_NOP;
+ p->nop_cmds[i]->cmd_status = 0;
+ p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
+ ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
+ }
+#else
+ for(i=0;i<NUM_XMIT_BUFFS;i++)
+ {
+ p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
+ p->nop_cmds[i]->cmd_cmd = CMD_NOP;
+ p->nop_cmds[i]->cmd_status = 0;
+ p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
+ ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
+ }
+#endif
+
+ ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */
+
+ /*
+ * alloc xmit-buffs / init xmit_cmds
+ */
+ for(i=0;i<NUM_XMIT_BUFFS;i++)
+ {
+ p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
+ ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
+ p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
+ ptr = (char *) ptr + XMIT_BUFF_SIZE;
+ p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
+ ptr = (char *) ptr + sizeof(struct tbd_struct);
+ if((void *)ptr > (void *)p->iscp)
+ {
+ printk("%s: not enough shared-mem for your configuration!\n",dev->name);
+ return 1;
+ }
+ memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
+ memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
+ p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
+ p->xmit_cmds[i]->cmd_status = STAT_COMPL;
+ p->xmit_cmds[i]->cmd_cmd = CMD_XMIT | CMD_INT;
+ p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
+ p->xmit_buffs[i]->next = 0xffff;
+ p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
+ }
+
+ p->xmit_count = 0;
+ p->xmit_last = 0;
+#ifndef NO_NOPCOMMANDS
+ p->nop_point = 0;
+#endif
+
+ /*
+ * 'start transmitter'
+ */
+#ifndef NO_NOPCOMMANDS
+ p->scb->cbl_offset = make16(p->nop_cmds[0]);
+ p->scb->cmd_cuc = CUC_START;
+ ni_attn586();
+ WAIT_4_SCB_CMD();
+#else
+ p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
+ p->xmit_cmds[0]->cmd_cmd = CMD_XMIT | CMD_SUSPEND | CMD_INT;
+#endif
+
+ /*
+ * ack. interrupts
+ */
+ p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
+ ni_attn586();
+ DELAY_16();
+
+ ni_enaint();
+
+ return 0;
+}
+
+/******************************************************
+ * This is a helper routine for ni52_rnr_int() and init586().
+ * It sets up the Receive Frame Area (RFA).
+ */
+
+static void *alloc_rfa(struct net_device *dev,void *ptr)
+{
+ volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
+ volatile struct rbd_struct *rbd;
+ int i;
+ struct priv *p = (struct priv *) dev->priv;
+
+ memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
+ p->rfd_first = rfd;
+
+ for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
+ rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
+ rfd[i].rbd_offset = 0xffff;
+ }
+ rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP; /* RU suspend */
+
+ ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
+
+ rbd = (struct rbd_struct *) ptr;
+ ptr = (void *) (rbd + p->num_recv_buffs);
+
+ /* clr descriptors */
+ memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
+
+ for(i=0;i<p->num_recv_buffs;i++)
+ {
+ rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
+ rbd[i].size = RECV_BUFF_SIZE;
+ rbd[i].buffer = make24(ptr);
+ ptr = (char *) ptr + RECV_BUFF_SIZE;
+ }
+
+ p->rfd_top = p->rfd_first;
+ p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
+
+ p->scb->rfa_offset = make16(p->rfd_first);
+ p->rfd_first->rbd_offset = make16(rbd);
+
+ return ptr;
+}
+
+
+/**************************************************
+ * Interrupt Handler ...
+ */
+
+static irqreturn_t ni52_interrupt(int irq,void *dev_id,struct pt_regs *reg_ptr)
+{
+ struct net_device *dev = dev_id;
+ unsigned short stat;
+ int cnt=0;
+ struct priv *p;
+
+ if (!dev) {
+ printk ("ni5210-interrupt: irq %d for unknown device.\n",irq);
+ return IRQ_NONE;
+ }
+ p = (struct priv *) dev->priv;
+
+ if(debuglevel > 1)
+ printk("I");
+
+ WAIT_4_SCB_CMD(); /* wait for last command */
+
+ while((stat=p->scb->cus & STAT_MASK))
+ {
+ p->scb->cmd_cuc = stat;
+ ni_attn586();
+
+ if(stat & STAT_FR) /* received a frame */
+ ni52_rcv_int(dev);
+
+ if(stat & STAT_RNR) /* RU went 'not ready' */
+ {
+ printk("(R)");
+ if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
+ {
+ WAIT_4_SCB_CMD();
+ p->scb->cmd_ruc = RUC_RESUME;
+ ni_attn586();
+ WAIT_4_SCB_CMD_RUC();
+ }
+ else
+ {
+ printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
+ ni52_rnr_int(dev);
+ }
+ }
+
+ if(stat & STAT_CX) /* command with I-bit set complete */
+ ni52_xmt_int(dev);
+
+#ifndef NO_NOPCOMMANDS
+ if(stat & STAT_CNA) /* CU went 'not ready' */
+ {
+ if(netif_running(dev))
+ printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
+ }
+#endif
+
+ if(debuglevel > 1)
+ printk("%d",cnt++);
+
+ WAIT_4_SCB_CMD(); /* wait for ack. (ni52_xmt_int can be faster than ack!!) */
+ if(p->scb->cmd_cuc) /* timed out? */
+ {
+ printk("%s: Acknowledge timed out.\n",dev->name);
+ ni_disint();
+ break;
+ }
+ }
+
+ if(debuglevel > 1)
+ printk("i");
+ return IRQ_HANDLED;
+}
+
+/*******************************************************
+ * receive-interrupt
+ */
+
+static void ni52_rcv_int(struct net_device *dev)
+{
+ int status,cnt=0;
+ unsigned short totlen;
+ struct sk_buff *skb;
+ struct rbd_struct *rbd;
+ struct priv *p = (struct priv *) dev->priv;
+
+ if(debuglevel > 0)
+ printk("R");
+
+ for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
+ {
+ rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
+
+ if(status & RFD_OK) /* frame received without error? */
+ {
+ if( (totlen = rbd->status) & RBD_LAST) /* the first and the last buffer? */
+ {
+ totlen &= RBD_MASK; /* length of this frame */
+ rbd->status = 0;
+ skb = (struct sk_buff *) dev_alloc_skb(totlen+2);
+ if(skb != NULL)
+ {
+ skb->dev = dev;
+ skb_reserve(skb,2);
+ skb_put(skb,totlen);
+ eth_copy_and_sum(skb,(char *) p->base+(unsigned long) rbd->buffer,totlen,0);
+ skb->protocol=eth_type_trans(skb,dev);
+ netif_rx(skb);
+ dev->last_rx = jiffies;
+ p->stats.rx_packets++;
+ p->stats.rx_bytes += totlen;
+ }
+ else
+ p->stats.rx_dropped++;
+ }
+ else
+ {
+ int rstat;
+ /* free all RBD's until RBD_LAST is set */
+ totlen = 0;
+ while(!((rstat=rbd->status) & RBD_LAST))
+ {
+ totlen += rstat & RBD_MASK;
+ if(!rstat)
+ {
+ printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
+ break;
+ }
+ rbd->status = 0;
+ rbd = (struct rbd_struct *) make32(rbd->next);
+ }
+ totlen += rstat & RBD_MASK;
+ rbd->status = 0;
+ printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
+ p->stats.rx_dropped++;
+ }
+ }
+ else /* frame !(ok), only with 'save-bad-frames' */
+ {
+ printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
+ p->stats.rx_errors++;
+ }
+ p->rfd_top->stat_high = 0;
+ p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
+ p->rfd_top->rbd_offset = 0xffff;
+ p->rfd_last->last = 0; /* delete RFD_SUSP */
+ p->rfd_last = p->rfd_top;
+ p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
+ p->scb->rfa_offset = make16(p->rfd_top);
+
+ if(debuglevel > 0)
+ printk("%d",cnt++);
+ }
+
+ if(automatic_resume)
+ {
+ WAIT_4_SCB_CMD();
+ p->scb->cmd_ruc = RUC_RESUME;
+ ni_attn586();
+ WAIT_4_SCB_CMD_RUC();
+ }
+
+#ifdef WAIT_4_BUSY
+ {
+ int i;
+ for(i=0;i<1024;i++)
+ {
+ if(p->rfd_top->status)
+ break;
+ DELAY_16();
+ if(i == 1023)
+ printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
+ }
+ }
+#endif
+
+#if 0
+ if(!at_least_one)
+ {
+ int i;
+ volatile struct rfd_struct *rfds=p->rfd_top;
+ volatile struct rbd_struct *rbds;
+ printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
+ for(i=0;i< (p->num_recv_buffs+4);i++)
+ {
+ rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
+ printk("%04x:%04x ",rfds->status,rbds->status);
+ rfds = (struct rfd_struct *) make32(rfds->next);
+ }
+ printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
+ printk("\nerrs: %04x %04x rus: %02x, cus: %02x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->rus,(int)p->scb->cus);
+ }
+ old_at_least = at_least_one;
+#endif
+
+ if(debuglevel > 0)
+ printk("r");
+}
+
+/**********************************************************
+ * handle 'Receiver went not ready'.
+ */
+
+static void ni52_rnr_int(struct net_device *dev)
+{
+ struct priv *p = (struct priv *) dev->priv;
+
+ p->stats.rx_errors++;
+
+ WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
+ p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
+ ni_attn586();
+ WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */
+
+ alloc_rfa(dev,(char *)p->rfd_first);
+/* maybe add a check here, before restarting the RU */
+ startrecv586(dev); /* restart RU */
+
+ printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
+
+}
+
+/**********************************************************
+ * handle xmit - interrupt
+ */
+
+static void ni52_xmt_int(struct net_device *dev)
+{
+ int status;
+ struct priv *p = (struct priv *) dev->priv;
+
+ if(debuglevel > 0)
+ printk("X");
+
+ status = p->xmit_cmds[p->xmit_last]->cmd_status;
+ if(!(status & STAT_COMPL))
+ printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
+
+ if(status & STAT_OK)
+ {
+ p->stats.tx_packets++;
+ p->stats.collisions += (status & TCMD_MAXCOLLMASK);
+ }
+ else
+ {
+ p->stats.tx_errors++;
+ if(status & TCMD_LATECOLL) {
+ printk("%s: late collision detected.\n",dev->name);
+ p->stats.collisions++;
+ }
+ else if(status & TCMD_NOCARRIER) {
+ p->stats.tx_carrier_errors++;
+ printk("%s: no carrier detected.\n",dev->name);
+ }
+ else if(status & TCMD_LOSTCTS)
+ printk("%s: loss of CTS detected.\n",dev->name);
+ else if(status & TCMD_UNDERRUN) {
+ p->stats.tx_fifo_errors++;
+ printk("%s: DMA underrun detected.\n",dev->name);
+ }
+ else if(status & TCMD_MAXCOLL) {
+ printk("%s: Max. collisions exceeded.\n",dev->name);
+ p->stats.collisions += 16;
+ }
+ }
+
+#if (NUM_XMIT_BUFFS > 1)
+ if( (++p->xmit_last) == NUM_XMIT_BUFFS)
+ p->xmit_last = 0;
+#endif
+ netif_wake_queue(dev);
+}
+
+/***********************************************************
+ * (re)start the receiver
+ */
+
+static void startrecv586(struct net_device *dev)
+{
+ struct priv *p = (struct priv *) dev->priv;
+
+ WAIT_4_SCB_CMD();
+ WAIT_4_SCB_CMD_RUC();
+ p->scb->rfa_offset = make16(p->rfd_first);
+ p->scb->cmd_ruc = RUC_START;
+ ni_attn586(); /* start cmd. */
+ WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */
+}
+
+static void ni52_timeout(struct net_device *dev)
+{
+ struct priv *p = (struct priv *) dev->priv;
+#ifndef NO_NOPCOMMANDS
+ if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
+ {
+ netif_wake_queue(dev);
+#ifdef DEBUG
+ printk("%s: strange ... timeout with CU active?!?\n",dev->name);
+ printk("%s: X0: %04x N0: %04x N1: %04x %d\n",dev->name,(int)p->xmit_cmds[0]->cmd_status,(int)p->nop_cmds[0]->cmd_status,(int)p->nop_cmds[1]->cmd_status,(int)p->nop_point);
+#endif
+ p->scb->cmd_cuc = CUC_ABORT;
+ ni_attn586();
+ WAIT_4_SCB_CMD();
+ p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
+ p->scb->cmd_cuc = CUC_START;
+ ni_attn586();
+ WAIT_4_SCB_CMD();
+ dev->trans_start = jiffies;
+ return 0;
+ }
+#endif
+ {
+#ifdef DEBUG
+ printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
+ printk("%s: command-stats: %04x %04x\n",dev->name,p->xmit_cmds[0]->cmd_status,p->xmit_cmds[1]->cmd_status);
+ printk("%s: check, whether you set the right interrupt number!\n",dev->name);
+#endif
+ ni52_close(dev);
+ ni52_open(dev);
+ }
+ dev->trans_start = jiffies;
+}
+
+/******************************************************
+ * send frame
+ */
+
+static int ni52_send_packet(struct sk_buff *skb, struct net_device *dev)
+{
+ int len,i;
+#ifndef NO_NOPCOMMANDS
+ int next_nop;
+#endif
+ struct priv *p = (struct priv *) dev->priv;
+
+ if(skb->len > XMIT_BUFF_SIZE)
+ {
+ printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
+ return 0;
+ }
+
+ netif_stop_queue(dev);
+
+#if(NUM_XMIT_BUFFS > 1)
+ if(test_and_set_bit(0,(void *) &p->lock)) {
+ printk("%s: Queue was locked\n",dev->name);
+ return 1;
+ }
+ else
+#endif
+ {
+ memcpy((char *)p->xmit_cbuffs[p->xmit_count],(char *)(skb->data),skb->len);
+ len = skb->len;
+ if (len < ETH_ZLEN) {
+ len = ETH_ZLEN;
+ memset((char *)p->xmit_cbuffs[p->xmit_count]+skb->len, 0, len - skb->len);
+ }
+
+#if (NUM_XMIT_BUFFS == 1)
+# ifdef NO_NOPCOMMANDS
+
+#ifdef DEBUG
+ if(p->scb->cus & CU_ACTIVE)
+ {
+ printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
+ printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,p->xmit_cmds[0]->cmd_status);
+ }
+#endif
+
+ p->xmit_buffs[0]->size = TBD_LAST | len;
+ for(i=0;i<16;i++)
+ {
+ p->xmit_cmds[0]->cmd_status = 0;
+ WAIT_4_SCB_CMD();
+ if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
+ p->scb->cmd_cuc = CUC_RESUME;
+ else
+ {
+ p->scb->cbl_offset = make16(p->xmit_cmds[0]);
+ p->scb->cmd_cuc = CUC_START;
+ }
+
+ ni_attn586();
+ dev->trans_start = jiffies;
+ if(!i)
+ dev_kfree_skb(skb);
+ WAIT_4_SCB_CMD();
+ if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
+ break;
+ if(p->xmit_cmds[0]->cmd_status)
+ break;
+ if(i==15)
+ printk("%s: Can't start transmit-command.\n",dev->name);
+ }
+# else
+ next_nop = (p->nop_point + 1) & 0x1;
+ p->xmit_buffs[0]->size = TBD_LAST | len;
+
+ p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link
+ = make16((p->nop_cmds[next_nop]));
+ p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
+
+ p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
+ dev->trans_start = jiffies;
+ p->nop_point = next_nop;
+ dev_kfree_skb(skb);
+# endif
+#else
+ p->xmit_buffs[p->xmit_count]->size = TBD_LAST | len;
+ if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
+ next_nop = 0;
+
+ p->xmit_cmds[p->xmit_count]->cmd_status = 0;
+ /* linkpointer of xmit-command already points to next nop cmd */
+ p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
+ p->nop_cmds[next_nop]->cmd_status = 0;
+
+ p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
+ dev->trans_start = jiffies;
+ p->xmit_count = next_nop;
+
+ {
+ unsigned long flags;
+ save_flags(flags);
+ cli();
+ if(p->xmit_count != p->xmit_last)
+ netif_wake_queue(dev);
+ p->lock = 0;
+ restore_flags(flags);
+ }
+ dev_kfree_skb(skb);
+#endif
+ }
+ return 0;
+}
+
+/*******************************************
+ * Someone wanna have the statistics
+ */
+
+static struct net_device_stats *ni52_get_stats(struct net_device *dev)
+{
+ struct priv *p = (struct priv *) dev->priv;
+ unsigned short crc,aln,rsc,ovrn;
+
+ crc = p->scb->crc_errs; /* get error-statistic from the ni82586 */
+ p->scb->crc_errs = 0;
+ aln = p->scb->aln_errs;
+ p->scb->aln_errs = 0;
+ rsc = p->scb->rsc_errs;
+ p->scb->rsc_errs = 0;
+ ovrn = p->scb->ovrn_errs;
+ p->scb->ovrn_errs = 0;
+
+ p->stats.rx_crc_errors += crc;
+ p->stats.rx_fifo_errors += ovrn;
+ p->stats.rx_frame_errors += aln;
+ p->stats.rx_dropped += rsc;
+
+ return &p->stats;
+}
+
+/********************************************************
+ * Set MC list ..
+ */
+
+static void set_multicast_list(struct net_device *dev)
+{
+ netif_stop_queue(dev);
+ ni_disint();
+ alloc586(dev);
+ init586(dev);
+ startrecv586(dev);
+ ni_enaint();
+ netif_wake_queue(dev);
+}
+
+#ifdef MODULE
+static struct net_device *dev_ni52;
+
+module_param(io, int, 0);
+module_param(irq, int, 0);
+module_param(memstart, long, 0);
+module_param(memend, long, 0);
+MODULE_PARM_DESC(io, "NI5210 I/O base address,required");
+MODULE_PARM_DESC(irq, "NI5210 IRQ number,required");
+MODULE_PARM_DESC(memstart, "NI5210 memory base address,required");
+MODULE_PARM_DESC(memend, "NI5210 memory end address,required");
+
+int init_module(void)
+{
+ if(io <= 0x0 || !memend || !memstart || irq < 2) {
+ printk("ni52: Autoprobing not allowed for modules.\nni52: Set symbols 'io' 'irq' 'memstart' and 'memend'\n");
+ return -ENODEV;
+ }
+ dev_ni52 = ni52_probe(-1);
+ if (IS_ERR(dev_ni52))
+ return PTR_ERR(dev_ni52);
+ return 0;
+}
+
+void cleanup_module(void)
+{
+ unregister_netdev(dev_ni52);
+ release_region(dev_ni52->base_addr, NI52_TOTAL_SIZE);
+ free_netdev(dev_ni52);
+}
+#endif /* MODULE */
+
+#if 0
+/*
+ * DUMP .. we expect a not running CMD unit and enough space
+ */
+void ni52_dump(struct net_device *dev,void *ptr)
+{
+ struct priv *p = (struct priv *) dev->priv;
+ struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
+ int i;
+
+ p->scb->cmd_cuc = CUC_ABORT;
+ ni_attn586();
+ WAIT_4_SCB_CMD();
+ WAIT_4_SCB_CMD_RUC();
+
+ dump_cmd->cmd_status = 0;
+ dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
+ dump_cmd->dump_offset = make16((dump_cmd + 1));
+ dump_cmd->cmd_link = 0xffff;
+
+ p->scb->cbl_offset = make16(dump_cmd);
+ p->scb->cmd_cuc = CUC_START;
+ ni_attn586();
+ WAIT_4_STAT_COMPL(dump_cmd);
+
+ if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
+ printk("%s: Can't get dump information.\n",dev->name);
+
+ for(i=0;i<170;i++) {
+ printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
+ if(i % 24 == 23)
+ printk("\n");
+ }
+ printk("\n");
+}
+#endif
+MODULE_LICENSE("GPL");
+
+/*
+ * END: linux/drivers/net/ni52.c
+ */
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