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linux/drivers/net/ni52.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

1387 lines
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/*
* 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);
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 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 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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