2005-04-16 15:20:36 -07:00
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/*
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net-3-driver for the 3c523 Etherlink/MC card (i82586 Ethernet chip)
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This is an extension to the Linux operating system, and is covered by the
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same GNU General Public License that covers that work.
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Copyright 1995, 1996 by Chris Beauregard (cpbeaure@undergrad.math.uwaterloo.ca)
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This is basically Michael Hipp's ni52 driver, with a new probing
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algorithm and some minor changes to the 82586 CA and reset routines.
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Thanks a lot Michael for a really clean i82586 implementation! Unless
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otherwise documented in ni52.c, any bugs are mine.
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Contrary to the Ethernet-HOWTO, this isn't based on the 3c507 driver in
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any way. The ni52 is a lot easier to modify.
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sources:
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ni52.c
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Crynwr packet driver collection was a great reference for my first
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attempt at this sucker. The 3c507 driver also helped, until I noticed
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that ni52.c was a lot nicer.
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EtherLink/MC: Micro Channel Ethernet Adapter Technical Reference
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Manual, courtesy of 3Com CardFacts, documents the 3c523-specific
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stuff. Information on CardFacts is found in the Ethernet HOWTO.
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Also see <a href="http://www.3com.com/">
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Microprocessor Communications Support Chips, T.J. Byers, ISBN
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0-444-01224-9, has a section on the i82586. It tells you just enough
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to know that you really don't want to learn how to program the chip.
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The original device probe code was stolen from ps2esdi.c
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Known Problems:
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Since most of the code was stolen from ni52.c, you'll run across the
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same bugs in the 0.62 version of ni52.c, plus maybe a few because of
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the 3c523 idiosynchacies. The 3c523 has 16K of RAM though, so there
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shouldn't be the overrun problem that the 8K ni52 has.
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This driver is for a 16K adapter. It should work fine on the 64K
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adapters, but it will only use one of the 4 banks of RAM. Modifying
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this for the 64K version would require a lot of heinous bank
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switching, which I'm sure not interested in doing. If you try to
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implement a bank switching version, you'll basically have to remember
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what bank is enabled and do a switch everytime you access a memory
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location that's not current. You'll also have to remap pointers on
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the driver side, because it only knows about 16K of the memory.
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Anyone desperate or masochistic enough to try?
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It seems to be stable now when multiple transmit buffers are used. I
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can't see any performance difference, but then I'm working on a 386SX.
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Multicast doesn't work. It doesn't even pretend to work. Don't use
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it. Don't compile your kernel with multicast support. I don't know
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why.
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Features:
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This driver is useable as a loadable module. If you try to specify an
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IRQ or a IO address (via insmod 3c523.o irq=xx io=0xyyy), it will
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search the MCA slots until it finds a 3c523 with the specified
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parameters.
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This driver does support multiple ethernet cards when used as a module
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(up to MAX_3C523_CARDS, the default being 4)
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This has been tested with both BNC and TP versions, internal and
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external transceivers. Haven't tested with the 64K version (that I
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know of).
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History:
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Jan 1st, 1996
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first public release
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Feb 4th, 1996
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update to 1.3.59, incorporated multicast diffs from ni52.c
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Feb 15th, 1996
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added shared irq support
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Apr 1999
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added support for multiple cards when used as a module
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added option to disable multicast as is causes problems
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Ganesh Sittampalam <ganesh.sittampalam@magdalen.oxford.ac.uk>
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Stuart Adamson <stuart.adamson@compsoc.net>
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Nov 2001
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added support for ethtool (jgarzik)
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$Header: /fsys2/home/chrisb/linux-1.3.59-MCA/drivers/net/RCS/3c523.c,v 1.1 1996/02/05 01:53:46 chrisb Exp chrisb $
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*/
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#define DRV_NAME "3c523"
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#define DRV_VERSION "17-Nov-2001"
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#include <linux/init.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/skbuff.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/mca-legacy.h>
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#include <linux/ethtool.h>
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#include <linux/bitops.h>
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#include <asm/uaccess.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#include "3c523.h"
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/*************************************************************************/
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#define DEBUG /* debug on */
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#define SYSBUSVAL 0 /* 1 = 8 Bit, 0 = 16 bit - 3c523 only does 16 bit */
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#undef ELMC_MULTICAST /* Disable multicast support as it is somewhat seriously broken at the moment */
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#define make32(ptr16) (p->memtop + (short) (ptr16) )
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#define make24(ptr32) ((char *) (ptr32) - p->base)
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#define make16(ptr32) ((unsigned short) ((unsigned long) (ptr32) - (unsigned long) p->memtop ))
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/*************************************************************************/
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/*
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Tables to which we can map values in the configuration registers.
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*/
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static int irq_table[] __initdata = {
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12, 7, 3, 9
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};
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static int csr_table[] __initdata = {
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0x300, 0x1300, 0x2300, 0x3300
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};
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static int shm_table[] __initdata = {
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0x0c0000, 0x0c8000, 0x0d0000, 0x0d8000
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};
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/******************* how to calculate the buffers *****************************
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* IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
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* --------------- in a different (more stable?) mode. Only in this mode it's
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* possible to configure the driver with 'NO_NOPCOMMANDS'
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sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
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sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
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sizeof(rfd) = 24; sizeof(rbd) = 12;
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sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
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sizeof(nop_cmd) = 8;
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* if you don't know the driver, better do not change this values: */
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#define RECV_BUFF_SIZE 1524 /* slightly oversized */
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#define XMIT_BUFF_SIZE 1524 /* slightly oversized */
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#define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */
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#define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */
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#define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */
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#if (NUM_XMIT_BUFFS == 1)
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#define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
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#endif
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/**************************************************************************/
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#define DELAY(x) { mdelay(32 * x); }
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/* a much shorter delay: */
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#define DELAY_16(); { udelay(16) ; }
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/* wait for command with timeout: */
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#define WAIT_4_SCB_CMD() { int i; \
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for(i=0;i<1024;i++) { \
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if(!p->scb->cmd) break; \
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DELAY_16(); \
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if(i == 1023) { \
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printk(KERN_WARNING "%s:%d: scb_cmd timed out .. resetting i82586\n",\
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dev->name,__LINE__); \
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elmc_id_reset586(); } } }
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static irqreturn_t elmc_interrupt(int irq, void *dev_id, struct pt_regs *reg_ptr);
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static int elmc_open(struct net_device *dev);
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static int elmc_close(struct net_device *dev);
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static int elmc_send_packet(struct sk_buff *, struct net_device *);
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static struct net_device_stats *elmc_get_stats(struct net_device *dev);
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static void elmc_timeout(struct net_device *dev);
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#ifdef ELMC_MULTICAST
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static void set_multicast_list(struct net_device *dev);
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#endif
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static struct ethtool_ops netdev_ethtool_ops;
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/* helper-functions */
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static int init586(struct net_device *dev);
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static int check586(struct net_device *dev, unsigned long where, unsigned size);
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static void alloc586(struct net_device *dev);
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static void startrecv586(struct net_device *dev);
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static void *alloc_rfa(struct net_device *dev, void *ptr);
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static void elmc_rcv_int(struct net_device *dev);
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static void elmc_xmt_int(struct net_device *dev);
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static void elmc_rnr_int(struct net_device *dev);
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struct priv {
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struct net_device_stats stats;
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unsigned long base;
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char *memtop;
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unsigned long mapped_start; /* Start of ioremap */
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volatile struct rfd_struct *rfd_last, *rfd_top, *rfd_first;
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volatile struct scp_struct *scp; /* volatile is important */
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volatile struct iscp_struct *iscp; /* volatile is important */
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volatile struct scb_struct *scb; /* volatile is important */
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volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS];
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#if (NUM_XMIT_BUFFS == 1)
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volatile struct transmit_cmd_struct *xmit_cmds[2];
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volatile struct nop_cmd_struct *nop_cmds[2];
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#else
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volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
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volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
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#endif
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volatile int nop_point, num_recv_buffs;
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volatile char *xmit_cbuffs[NUM_XMIT_BUFFS];
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volatile int xmit_count, xmit_last;
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volatile int slot;
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};
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#define elmc_attn586() {elmc_do_attn586(dev->base_addr,ELMC_CTRL_INTE);}
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#define elmc_reset586() {elmc_do_reset586(dev->base_addr,ELMC_CTRL_INTE);}
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/* with interrupts disabled - this will clear the interrupt bit in the
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3c523 control register, and won't put it back. This effectively
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disables interrupts on the card. */
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#define elmc_id_attn586() {elmc_do_attn586(dev->base_addr,0);}
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#define elmc_id_reset586() {elmc_do_reset586(dev->base_addr,0);}
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/*************************************************************************/
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/*
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Do a Channel Attention on the 3c523. This is extremely board dependent.
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*/
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static void elmc_do_attn586(int ioaddr, int ints)
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{
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/* the 3c523 requires a minimum of 500 ns. The delays here might be
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a little too large, and hence they may cut the performance of the
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card slightly. If someone who knows a little more about Linux
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timing would care to play with these, I'd appreciate it. */
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/* this bit masking stuff is crap. I'd rather have separate
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registers with strobe triggers for each of these functions. <sigh>
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Ya take what ya got. */
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outb(ELMC_CTRL_RST | 0x3 | ELMC_CTRL_CA | ints, ioaddr + ELMC_CTRL);
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DELAY_16(); /* > 500 ns */
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outb(ELMC_CTRL_RST | 0x3 | ints, ioaddr + ELMC_CTRL);
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}
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/*************************************************************************/
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/*
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Reset the 82586 on the 3c523. Also very board dependent.
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*/
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static void elmc_do_reset586(int ioaddr, int ints)
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{
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/* toggle the RST bit low then high */
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outb(0x3 | ELMC_CTRL_LBK, ioaddr + ELMC_CTRL);
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DELAY_16(); /* > 500 ns */
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outb(ELMC_CTRL_RST | ELMC_CTRL_LBK | 0x3, ioaddr + ELMC_CTRL);
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elmc_do_attn586(ioaddr, ints);
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}
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/**********************************************
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* close device
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*/
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static int elmc_close(struct net_device *dev)
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{
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netif_stop_queue(dev);
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elmc_id_reset586(); /* the hard way to stop the receiver */
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free_irq(dev->irq, dev);
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return 0;
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}
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/**********************************************
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* open device
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*/
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static int elmc_open(struct net_device *dev)
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{
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int ret;
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elmc_id_attn586(); /* disable interrupts */
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ret = request_irq(dev->irq, &elmc_interrupt, SA_SHIRQ | SA_SAMPLE_RANDOM,
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dev->name, dev);
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if (ret) {
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printk(KERN_ERR "%s: couldn't get irq %d\n", dev->name, dev->irq);
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elmc_id_reset586();
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return ret;
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}
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alloc586(dev);
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init586(dev);
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startrecv586(dev);
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netif_start_queue(dev);
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return 0; /* most done by init */
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}
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|
/**********************************************
|
|
|
|
|
* Check to see if there's an 82586 out there.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static int __init check586(struct net_device *dev, unsigned long where, unsigned size)
|
|
|
|
|
{
|
|
|
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
|
char *iscp_addrs[2];
|
|
|
|
|
int i = 0;
|
|
|
|
|
|
|
|
|
|
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));
|
|
|
|
|
p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */
|
|
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
|
|
elmc_id_reset586();
|
|
|
|
|
|
|
|
|
|
/* reset586 does an implicit CA */
|
|
|
|
|
|
|
|
|
|
/* apparently, you sometimes have to kick the 82586 twice... */
|
|
|
|
|
elmc_id_attn586();
|
|
|
|
|
DELAY(1);
|
|
|
|
|
|
|
|
|
|
if (p->iscp->busy) { /* i82586 clears 'busy' after successful init */
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/******************************************************************
|
|
|
|
|
* set iscp at the right place, called by elmc_probe and open586.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
void alloc586(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
|
|
|
|
|
|
elmc_id_reset586();
|
|
|
|
|
DELAY(2);
|
|
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
elmc_id_reset586();
|
|
|
|
|
elmc_id_attn586();
|
|
|
|
|
|
|
|
|
|
DELAY(2);
|
|
|
|
|
|
|
|
|
|
if (p->iscp->busy) {
|
|
|
|
|
printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name);
|
|
|
|
|
}
|
|
|
|
|
memset((char *) p->scb, 0, sizeof(struct scb_struct));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*****************************************************************/
|
|
|
|
|
|
|
|
|
|
static int elmc_getinfo(char *buf, int slot, void *d)
|
|
|
|
|
{
|
|
|
|
|
int len = 0;
|
|
|
|
|
struct net_device *dev = (struct net_device *) d;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
if (dev == NULL)
|
|
|
|
|
return len;
|
|
|
|
|
|
|
|
|
|
len += sprintf(buf + len, "Revision: 0x%x\n",
|
|
|
|
|
inb(dev->base_addr + ELMC_REVISION) & 0xf);
|
|
|
|
|
len += sprintf(buf + len, "IRQ: %d\n", dev->irq);
|
|
|
|
|
len += sprintf(buf + len, "IO Address: %#lx-%#lx\n", dev->base_addr,
|
|
|
|
|
dev->base_addr + ELMC_IO_EXTENT);
|
|
|
|
|
len += sprintf(buf + len, "Memory: %#lx-%#lx\n", dev->mem_start,
|
|
|
|
|
dev->mem_end - 1);
|
|
|
|
|
len += sprintf(buf + len, "Transceiver: %s\n", dev->if_port ?
|
|
|
|
|
"External" : "Internal");
|
|
|
|
|
len += sprintf(buf + len, "Device: %s\n", dev->name);
|
|
|
|
|
len += sprintf(buf + len, "Hardware Address:");
|
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
|
|
|
len += sprintf(buf + len, " %02x", dev->dev_addr[i]);
|
|
|
|
|
}
|
|
|
|
|
buf[len++] = '\n';
|
|
|
|
|
buf[len] = 0;
|
|
|
|
|
|
|
|
|
|
return len;
|
|
|
|
|
} /* elmc_getinfo() */
|
|
|
|
|
|
|
|
|
|
/*****************************************************************/
|
|
|
|
|
|
|
|
|
|
static int __init do_elmc_probe(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
static int slot;
|
|
|
|
|
int base_addr = dev->base_addr;
|
|
|
|
|
int irq = dev->irq;
|
|
|
|
|
u_char status = 0;
|
|
|
|
|
u_char revision = 0;
|
|
|
|
|
int i = 0;
|
|
|
|
|
unsigned int size = 0;
|
|
|
|
|
int retval;
|
|
|
|
|
struct priv *pr = dev->priv;
|
|
|
|
|
|
|
|
|
|
SET_MODULE_OWNER(dev);
|
|
|
|
|
if (MCA_bus == 0) {
|
|
|
|
|
return -ENODEV;
|
|
|
|
|
}
|
|
|
|
|
/* search through the slots for the 3c523. */
|
|
|
|
|
slot = mca_find_adapter(ELMC_MCA_ID, 0);
|
|
|
|
|
while (slot != -1) {
|
|
|
|
|
status = mca_read_stored_pos(slot, 2);
|
|
|
|
|
|
|
|
|
|
dev->irq=irq_table[(status & ELMC_STATUS_IRQ_SELECT) >> 6];
|
|
|
|
|
dev->base_addr=csr_table[(status & ELMC_STATUS_CSR_SELECT) >> 1];
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
If we're trying to match a specified irq or IO address,
|
|
|
|
|
we'll reject a match unless it's what we're looking for.
|
|
|
|
|
Also reject it if the card is already in use.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
if ((irq && irq != dev->irq) ||
|
|
|
|
|
(base_addr && base_addr != dev->base_addr)) {
|
|
|
|
|
slot = mca_find_adapter(ELMC_MCA_ID, slot + 1);
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
if (!request_region(dev->base_addr, ELMC_IO_EXTENT, DRV_NAME)) {
|
|
|
|
|
slot = mca_find_adapter(ELMC_MCA_ID, slot + 1);
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* found what we're looking for... */
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* we didn't find any 3c523 in the slots we checked for */
|
|
|
|
|
if (slot == MCA_NOTFOUND)
|
|
|
|
|
return ((base_addr || irq) ? -ENXIO : -ENODEV);
|
|
|
|
|
|
|
|
|
|
mca_set_adapter_name(slot, "3Com 3c523 Etherlink/MC");
|
|
|
|
|
mca_set_adapter_procfn(slot, (MCA_ProcFn) elmc_getinfo, dev);
|
|
|
|
|
|
|
|
|
|
/* if we get this far, adapter has been found - carry on */
|
|
|
|
|
printk(KERN_INFO "%s: 3c523 adapter found in slot %d\n", dev->name, slot + 1);
|
|
|
|
|
|
|
|
|
|
/* Now we extract configuration info from the card.
|
|
|
|
|
The 3c523 provides information in two of the POS registers, but
|
|
|
|
|
the second one is only needed if we want to tell the card what IRQ
|
|
|
|
|
to use. I suspect that whoever sets the thing up initially would
|
|
|
|
|
prefer we don't screw with those things.
|
|
|
|
|
|
|
|
|
|
Note that we read the status info when we found the card...
|
|
|
|
|
|
|
|
|
|
See 3c523.h for more details.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* revision is stored in the first 4 bits of the revision register */
|
|
|
|
|
revision = inb(dev->base_addr + ELMC_REVISION) & 0xf;
|
|
|
|
|
|
|
|
|
|
/* according to docs, we read the interrupt and write it back to
|
|
|
|
|
the IRQ select register, since the POST might not configure the IRQ
|
|
|
|
|
properly. */
|
|
|
|
|
switch (dev->irq) {
|
|
|
|
|
case 3:
|
|
|
|
|
mca_write_pos(slot, 3, 0x04);
|
|
|
|
|
break;
|
|
|
|
|
case 7:
|
|
|
|
|
mca_write_pos(slot, 3, 0x02);
|
|
|
|
|
break;
|
|
|
|
|
case 9:
|
|
|
|
|
mca_write_pos(slot, 3, 0x08);
|
|
|
|
|
break;
|
|
|
|
|
case 12:
|
|
|
|
|
mca_write_pos(slot, 3, 0x01);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
memset(pr, 0, sizeof(struct priv));
|
|
|
|
|
pr->slot = slot;
|
|
|
|
|
|
|
|
|
|
printk(KERN_INFO "%s: 3Com 3c523 Rev 0x%x at %#lx\n", dev->name, (int) revision,
|
|
|
|
|
dev->base_addr);
|
|
|
|
|
|
|
|
|
|
/* Determine if we're using the on-board transceiver (i.e. coax) or
|
|
|
|
|
an external one. The information is pretty much useless, but I
|
|
|
|
|
guess it's worth brownie points. */
|
|
|
|
|
dev->if_port = (status & ELMC_STATUS_DISABLE_THIN);
|
|
|
|
|
|
|
|
|
|
/* The 3c523 has a 24K chunk of memory. The first 16K is the
|
|
|
|
|
shared memory, while the last 8K is for the EtherStart BIOS ROM.
|
|
|
|
|
Which we don't care much about here. We'll just tell Linux that
|
|
|
|
|
we're using 16K. MCA won't permit address space conflicts caused
|
|
|
|
|
by not mapping the other 8K. */
|
|
|
|
|
dev->mem_start = shm_table[(status & ELMC_STATUS_MEMORY_SELECT) >> 3];
|
|
|
|
|
|
|
|
|
|
/* We're using MCA, so it's a given that the information about memory
|
|
|
|
|
size is correct. The Crynwr drivers do something like this. */
|
|
|
|
|
|
|
|
|
|
elmc_id_reset586(); /* seems like a good idea before checking it... */
|
|
|
|
|
|
|
|
|
|
size = 0x4000; /* check for 16K mem */
|
|
|
|
|
if (!check586(dev, dev->mem_start, size)) {
|
|
|
|
|
printk(KERN_ERR "%s: memprobe, Can't find memory at 0x%lx!\n", dev->name,
|
|
|
|
|
dev->mem_start);
|
|
|
|
|
retval = -ENODEV;
|
|
|
|
|
goto err_out;
|
|
|
|
|
}
|
|
|
|
|
dev->mem_end = dev->mem_start + size; /* set mem_end showed by 'ifconfig' */
|
|
|
|
|
|
|
|
|
|
pr->memtop = isa_bus_to_virt(dev->mem_start) + size;
|
|
|
|
|
pr->base = (unsigned long) isa_bus_to_virt(dev->mem_start) + size - 0x01000000;
|
|
|
|
|
alloc586(dev);
|
|
|
|
|
|
|
|
|
|
elmc_id_reset586(); /* make sure it doesn't generate spurious ints */
|
|
|
|
|
|
|
|
|
|
/* set number of receive-buffs according to memsize */
|
|
|
|
|
pr->num_recv_buffs = NUM_RECV_BUFFS_16;
|
|
|
|
|
|
|
|
|
|
/* dump all the assorted information */
|
|
|
|
|
printk(KERN_INFO "%s: IRQ %d, %sternal xcvr, memory %#lx-%#lx.\n", dev->name,
|
|
|
|
|
dev->irq, dev->if_port ? "ex" : "in",
|
|
|
|
|
dev->mem_start, dev->mem_end - 1);
|
|
|
|
|
|
|
|
|
|
/* The hardware address for the 3c523 is stored in the first six
|
|
|
|
|
bytes of the IO address. */
|
|
|
|
|
printk(KERN_INFO "%s: hardware address ", dev->name);
|
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
|
|
|
dev->dev_addr[i] = inb(dev->base_addr + i);
|
|
|
|
|
printk(" %02x", dev->dev_addr[i]);
|
|
|
|
|
}
|
|
|
|
|
printk("\n");
|
|
|
|
|
|
|
|
|
|
dev->open = &elmc_open;
|
|
|
|
|
dev->stop = &elmc_close;
|
|
|
|
|
dev->get_stats = &elmc_get_stats;
|
|
|
|
|
dev->hard_start_xmit = &elmc_send_packet;
|
|
|
|
|
dev->tx_timeout = &elmc_timeout;
|
|
|
|
|
dev->watchdog_timeo = HZ;
|
|
|
|
|
#ifdef ELMC_MULTICAST
|
|
|
|
|
dev->set_multicast_list = &set_multicast_list;
|
|
|
|
|
#else
|
|
|
|
|
dev->set_multicast_list = NULL;
|
|
|
|
|
#endif
|
|
|
|
|
dev->ethtool_ops = &netdev_ethtool_ops;
|
|
|
|
|
|
|
|
|
|
/* note that we haven't actually requested the IRQ from the kernel.
|
|
|
|
|
That gets done in elmc_open(). I'm not sure that's such a good idea,
|
|
|
|
|
but it works, so I'll go with it. */
|
|
|
|
|
|
|
|
|
|
#ifndef ELMC_MULTICAST
|
|
|
|
|
dev->flags&=~IFF_MULTICAST; /* Multicast doesn't work */
|
|
|
|
|
#endif
|
|
|
|
|
|
2005-05-12 20:11:55 -04:00
|
|
|
retval = register_netdev(dev);
|
|
|
|
|
if (retval)
|
|
|
|
|
goto err_out;
|
|
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
return 0;
|
|
|
|
|
err_out:
|
|
|
|
|
mca_set_adapter_procfn(slot, NULL, NULL);
|
|
|
|
|
release_region(dev->base_addr, ELMC_IO_EXTENT);
|
|
|
|
|
return retval;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void cleanup_card(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
mca_set_adapter_procfn(((struct priv *) (dev->priv))->slot, NULL, NULL);
|
|
|
|
|
release_region(dev->base_addr, ELMC_IO_EXTENT);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#ifndef MODULE
|
|
|
|
|
struct net_device * __init elmc_probe(int unit)
|
|
|
|
|
{
|
|
|
|
|
struct net_device *dev = alloc_etherdev(sizeof(struct priv));
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
|
|
if (!dev)
|
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
|
|
sprintf(dev->name, "eth%d", unit);
|
|
|
|
|
netdev_boot_setup_check(dev);
|
|
|
|
|
|
|
|
|
|
err = do_elmc_probe(dev);
|
|
|
|
|
if (err)
|
|
|
|
|
goto out;
|
|
|
|
|
return dev;
|
|
|
|
|
out:
|
|
|
|
|
free_netdev(dev);
|
|
|
|
|
return ERR_PTR(err);
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/**********************************************
|
|
|
|
|
* init the chip (elmc-interrupt should be disabled?!)
|
|
|
|
|
* needs a correct 'allocated' memory
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static int init586(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
void *ptr;
|
|
|
|
|
unsigned long s;
|
|
|
|
|
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 = 0x08; /* 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 | 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 = CUC_START; /* cmd.-unit start */
|
|
|
|
|
elmc_id_attn586();
|
|
|
|
|
|
|
|
|
|
s = jiffies; /* warning: only active with interrupts on !! */
|
|
|
|
|
while (!(cfg_cmd->cmd_status & STAT_COMPL)) {
|
|
|
|
|
if (jiffies - s > 30*HZ/100)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((cfg_cmd->cmd_status & (STAT_OK | STAT_COMPL)) != (STAT_COMPL | STAT_OK)) {
|
|
|
|
|
printk(KERN_WARNING "%s (elmc): 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_START; /* cmd.-unit start */
|
|
|
|
|
elmc_id_attn586();
|
|
|
|
|
|
|
|
|
|
s = jiffies;
|
|
|
|
|
while (!(ias_cmd->cmd_status & STAT_COMPL)) {
|
|
|
|
|
if (jiffies - s > 30*HZ/100)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((ias_cmd->cmd_status & (STAT_OK | STAT_COMPL)) != (STAT_OK | STAT_COMPL)) {
|
|
|
|
|
printk(KERN_WARNING "%s (elmc): 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_START; /* cmd.-unit start */
|
|
|
|
|
elmc_attn586();
|
|
|
|
|
|
|
|
|
|
s = jiffies;
|
|
|
|
|
while (!(tdr_cmd->cmd_status & STAT_COMPL)) {
|
|
|
|
|
if (jiffies - s > 30*HZ/100) {
|
|
|
|
|
printk(KERN_WARNING "%s: %d Problems while running the TDR.\n", dev->name, __LINE__);
|
|
|
|
|
result = 1;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!result) {
|
|
|
|
|
DELAY(2); /* wait for result */
|
|
|
|
|
result = tdr_cmd->status;
|
|
|
|
|
|
|
|
|
|
p->scb->cmd = p->scb->status & STAT_MASK;
|
|
|
|
|
elmc_id_attn586(); /* ack the interrupts */
|
|
|
|
|
|
|
|
|
|
if (result & TDR_LNK_OK) {
|
|
|
|
|
/* empty */
|
|
|
|
|
} else if (result & TDR_XCVR_PRB) {
|
|
|
|
|
printk(KERN_WARNING "%s: TDR: Transceiver problem!\n", dev->name);
|
|
|
|
|
} else if (result & TDR_ET_OPN) {
|
|
|
|
|
printk(KERN_WARNING "%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(KERN_WARNING "%s: TDR: Detected a short circuit %d clocks away.\n", dev->name, result & TDR_TIMEMASK);
|
|
|
|
|
} else {
|
|
|
|
|
printk(KERN_WARNING "%s: TDR: Unknown status %04x\n", dev->name, result);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* ack interrupts
|
|
|
|
|
*/
|
|
|
|
|
p->scb->cmd = p->scb->status & STAT_MASK;
|
|
|
|
|
elmc_id_attn586();
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* 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);
|
|
|
|
|
}
|
|
|
|
|
p->xmit_cmds[0] = (struct transmit_cmd_struct *) ptr; /* transmit cmd/buff 0 */
|
|
|
|
|
ptr = (char *) ptr + sizeof(struct transmit_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);
|
|
|
|
|
p->xmit_cmds[i] = (struct transmit_cmd_struct *) ptr; /*transmit cmd/buff 0 */
|
|
|
|
|
ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
ptr = alloc_rfa(dev, (void *) ptr); /* init receive-frame-area */
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Multicast setup
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
if (dev->mc_count) {
|
|
|
|
|
/* I don't understand this: do we really need memory after the init? */
|
|
|
|
|
int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
|
|
|
|
|
if (len <= 0) {
|
|
|
|
|
printk(KERN_ERR "%s: Ooooops, no memory for MC-Setup!\n", dev->name);
|
|
|
|
|
} else {
|
|
|
|
|
if (len < num_addrs) {
|
|
|
|
|
num_addrs = len;
|
|
|
|
|
printk(KERN_WARNING "%s: Sorry, can only apply %d MC-Address(es).\n",
|
|
|
|
|
dev->name, num_addrs);
|
|
|
|
|
}
|
|
|
|
|
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++) {
|
|
|
|
|
memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr, 6);
|
|
|
|
|
dmi = dmi->next;
|
|
|
|
|
}
|
|
|
|
|
p->scb->cbl_offset = make16(mc_cmd);
|
|
|
|
|
p->scb->cmd = CUC_START;
|
|
|
|
|
elmc_id_attn586();
|
|
|
|
|
s = jiffies;
|
|
|
|
|
while (!(mc_cmd->cmd_status & STAT_COMPL)) {
|
|
|
|
|
if (jiffies - s > 30*HZ/100)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (!(mc_cmd->cmd_status & STAT_COMPL)) {
|
|
|
|
|
printk(KERN_WARNING "%s: Can't apply multicast-address-list.\n", dev->name);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
/*
|
|
|
|
|
* alloc xmit-buffs / init xmit_cmds
|
|
|
|
|
*/
|
|
|
|
|
for (i = 0; i < NUM_XMIT_BUFFS; i++) {
|
|
|
|
|
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(KERN_ERR "%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_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' (nop-loop)
|
|
|
|
|
*/
|
|
|
|
|
#ifndef NO_NOPCOMMANDS
|
|
|
|
|
p->scb->cbl_offset = make16(p->nop_cmds[0]);
|
|
|
|
|
p->scb->cmd = CUC_START;
|
|
|
|
|
elmc_id_attn586();
|
|
|
|
|
WAIT_4_SCB_CMD();
|
|
|
|
|
#else
|
|
|
|
|
p->xmit_cmds[0]->cmd_link = 0xffff;
|
|
|
|
|
p->xmit_cmds[0]->cmd_cmd = CMD_XMIT | CMD_LAST | CMD_INT;
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/******************************************************
|
|
|
|
|
* This is a helper routine for elmc_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);
|
|
|
|
|
p->rfd_first = rfd;
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < p->num_recv_buffs; i++) {
|
|
|
|
|
rfd[i].next = make16(rfd + (i + 1) % p->num_recv_buffs);
|
|
|
|
|
}
|
|
|
|
|
rfd[p->num_recv_buffs - 1].last = RFD_SUSP; /* RU suspend */
|
|
|
|
|
|
|
|
|
|
ptr = (void *) (rfd + p->num_recv_buffs);
|
|
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
|
|
p->scb->rfa_offset = make16(p->rfd_first);
|
|
|
|
|
p->rfd_first->rbd_offset = make16(rbd);
|
|
|
|
|
|
|
|
|
|
return ptr;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**************************************************
|
|
|
|
|
* Interrupt Handler ...
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static irqreturn_t
|
|
|
|
|
elmc_interrupt(int irq, void *dev_id, struct pt_regs *reg_ptr)
|
|
|
|
|
{
|
|
|
|
|
struct net_device *dev = (struct net_device *) dev_id;
|
|
|
|
|
unsigned short stat;
|
|
|
|
|
struct priv *p;
|
|
|
|
|
|
|
|
|
|
if (dev == NULL) {
|
|
|
|
|
printk(KERN_ERR "elmc-interrupt: irq %d for unknown device.\n", (int) -(((struct pt_regs *) reg_ptr)->orig_eax + 2));
|
|
|
|
|
return IRQ_NONE;
|
|
|
|
|
} else if (!netif_running(dev)) {
|
|
|
|
|
/* The 3c523 has this habit of generating interrupts during the
|
|
|
|
|
reset. I'm not sure if the ni52 has this same problem, but it's
|
|
|
|
|
really annoying if we haven't finished initializing it. I was
|
|
|
|
|
hoping all the elmc_id_* commands would disable this, but I
|
|
|
|
|
might have missed a few. */
|
|
|
|
|
|
|
|
|
|
elmc_id_attn586(); /* ack inter. and disable any more */
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
|
} else if (!(ELMC_CTRL_INT & inb(dev->base_addr + ELMC_CTRL))) {
|
|
|
|
|
/* wasn't this device */
|
|
|
|
|
return IRQ_NONE;
|
|
|
|
|
}
|
|
|
|
|
/* reading ELMC_CTRL also clears the INT bit. */
|
|
|
|
|
|
|
|
|
|
p = (struct priv *) dev->priv;
|
|
|
|
|
|
|
|
|
|
while ((stat = p->scb->status & STAT_MASK))
|
|
|
|
|
{
|
|
|
|
|
p->scb->cmd = stat;
|
|
|
|
|
elmc_attn586(); /* ack inter. */
|
|
|
|
|
|
|
|
|
|
if (stat & STAT_CX) {
|
|
|
|
|
/* command with I-bit set complete */
|
|
|
|
|
elmc_xmt_int(dev);
|
|
|
|
|
}
|
|
|
|
|
if (stat & STAT_FR) {
|
|
|
|
|
/* received a frame */
|
|
|
|
|
elmc_rcv_int(dev);
|
|
|
|
|
}
|
|
|
|
|
#ifndef NO_NOPCOMMANDS
|
|
|
|
|
if (stat & STAT_CNA) {
|
|
|
|
|
/* CU went 'not ready' */
|
|
|
|
|
if (netif_running(dev)) {
|
|
|
|
|
printk(KERN_WARNING "%s: oops! CU has left active state. stat: %04x/%04x.\n", dev->name, (int) stat, (int) p->scb->status);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
if (stat & STAT_RNR) {
|
|
|
|
|
/* RU went 'not ready' */
|
|
|
|
|
|
|
|
|
|
if (p->scb->status & RU_SUSPEND) {
|
|
|
|
|
/* special case: RU_SUSPEND */
|
|
|
|
|
|
|
|
|
|
WAIT_4_SCB_CMD();
|
|
|
|
|
p->scb->cmd = RUC_RESUME;
|
|
|
|
|
elmc_attn586();
|
|
|
|
|
} else {
|
|
|
|
|
printk(KERN_WARNING "%s: Receiver-Unit went 'NOT READY': %04x/%04x.\n", dev->name, (int) stat, (int) p->scb->status);
|
|
|
|
|
elmc_rnr_int(dev);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
WAIT_4_SCB_CMD(); /* wait for ack. (elmc_xmt_int can be faster than ack!!) */
|
|
|
|
|
if (p->scb->cmd) { /* timed out? */
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*******************************************************
|
|
|
|
|
* receive-interrupt
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static void elmc_rcv_int(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
int status;
|
|
|
|
|
unsigned short totlen;
|
|
|
|
|
struct sk_buff *skb;
|
|
|
|
|
struct rbd_struct *rbd;
|
|
|
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
|
|
|
|
|
|
for (; (status = p->rfd_top->status) & STAT_COMPL;) {
|
|
|
|
|
rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
|
|
|
|
|
|
|
|
|
|
if (status & STAT_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); /* 16 byte alignment */
|
|
|
|
|
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 {
|
|
|
|
|
printk(KERN_WARNING "%s: received oversized frame.\n", dev->name);
|
|
|
|
|
p->stats.rx_dropped++;
|
|
|
|
|
}
|
|
|
|
|
} else { /* frame !(ok), only with 'save-bad-frames' */
|
|
|
|
|
printk(KERN_WARNING "%s: oops! rfd-error-status: %04x\n", dev->name, status);
|
|
|
|
|
p->stats.rx_errors++;
|
|
|
|
|
}
|
|
|
|
|
p->rfd_top->status = 0;
|
|
|
|
|
p->rfd_top->last = RFD_SUSP;
|
|
|
|
|
p->rfd_last->last = 0; /* delete RU_SUSP */
|
|
|
|
|
p->rfd_last = p->rfd_top;
|
|
|
|
|
p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**********************************************************
|
|
|
|
|
* handle 'Receiver went not ready'.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static void elmc_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 */
|
|
|
|
|
p->scb->cmd = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
|
|
|
|
|
elmc_attn586();
|
|
|
|
|
WAIT_4_SCB_CMD(); /* wait for accept cmd. */
|
|
|
|
|
|
|
|
|
|
alloc_rfa(dev, (char *) p->rfd_first);
|
|
|
|
|
startrecv586(dev); /* restart RU */
|
|
|
|
|
|
|
|
|
|
printk(KERN_WARNING "%s: Receive-Unit restarted. Status: %04x\n", dev->name, p->scb->status);
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**********************************************************
|
|
|
|
|
* handle xmit - interrupt
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static void elmc_xmt_int(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
int status;
|
|
|
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
|
|
|
|
|
|
status = p->xmit_cmds[p->xmit_last]->cmd_status;
|
|
|
|
|
if (!(status & STAT_COMPL)) {
|
|
|
|
|
printk(KERN_WARNING "%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(KERN_WARNING "%s: late collision detected.\n", dev->name);
|
|
|
|
|
p->stats.collisions++;
|
|
|
|
|
} else if (status & TCMD_NOCARRIER) {
|
|
|
|
|
p->stats.tx_carrier_errors++;
|
|
|
|
|
printk(KERN_WARNING "%s: no carrier detected.\n", dev->name);
|
|
|
|
|
} else if (status & TCMD_LOSTCTS) {
|
|
|
|
|
printk(KERN_WARNING "%s: loss of CTS detected.\n", dev->name);
|
|
|
|
|
} else if (status & TCMD_UNDERRUN) {
|
|
|
|
|
p->stats.tx_fifo_errors++;
|
|
|
|
|
printk(KERN_WARNING "%s: DMA underrun detected.\n", dev->name);
|
|
|
|
|
} else if (status & TCMD_MAXCOLL) {
|
|
|
|
|
printk(KERN_WARNING "%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;
|
|
|
|
|
|
|
|
|
|
p->scb->rfa_offset = make16(p->rfd_first);
|
|
|
|
|
p->scb->cmd = RUC_START;
|
|
|
|
|
elmc_attn586(); /* start cmd. */
|
|
|
|
|
WAIT_4_SCB_CMD(); /* wait for accept cmd. (no timeout!!) */
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/******************************************************
|
|
|
|
|
* timeout
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static void elmc_timeout(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
|
/* COMMAND-UNIT active? */
|
|
|
|
|
if (p->scb->status & CU_ACTIVE) {
|
|
|
|
|
#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_ABORT;
|
|
|
|
|
elmc_attn586();
|
|
|
|
|
WAIT_4_SCB_CMD();
|
|
|
|
|
p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
|
|
|
|
|
p->scb->cmd = CUC_START;
|
|
|
|
|
elmc_attn586();
|
|
|
|
|
WAIT_4_SCB_CMD();
|
|
|
|
|
netif_wake_queue(dev);
|
|
|
|
|
} else {
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
|
printk("%s: xmitter timed out, try to restart! stat: %04x\n", dev->name, p->scb->status);
|
|
|
|
|
printk("%s: command-stats: %04x %04x\n", dev->name, p->xmit_cmds[0]->cmd_status, p->xmit_cmds[1]->cmd_status);
|
|
|
|
|
#endif
|
|
|
|
|
elmc_close(dev);
|
|
|
|
|
elmc_open(dev);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/******************************************************
|
|
|
|
|
* send frame
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static int elmc_send_packet(struct sk_buff *skb, struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
int len;
|
|
|
|
|
int i;
|
|
|
|
|
#ifndef NO_NOPCOMMANDS
|
|
|
|
|
int next_nop;
|
|
|
|
|
#endif
|
|
|
|
|
struct priv *p = (struct priv *) dev->priv;
|
|
|
|
|
|
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
|
|
|
|
|
|
len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
|
|
|
|
|
|
|
|
|
|
if (len != skb->len)
|
|
|
|
|
memset((char *) p->xmit_cbuffs[p->xmit_count], 0, ETH_ZLEN);
|
|
|
|
|
memcpy((char *) p->xmit_cbuffs[p->xmit_count], (char *) (skb->data), skb->len);
|
|
|
|
|
|
|
|
|
|
#if (NUM_XMIT_BUFFS == 1)
|
|
|
|
|
#ifdef NO_NOPCOMMANDS
|
|
|
|
|
p->xmit_buffs[0]->size = TBD_LAST | len;
|
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
|
|
|
p->scb->cbl_offset = make16(p->xmit_cmds[0]);
|
|
|
|
|
p->scb->cmd = CUC_START;
|
|
|
|
|
p->xmit_cmds[0]->cmd_status = 0;
|
|
|
|
|
elmc_attn586();
|
|
|
|
|
dev->trans_start = jiffies;
|
|
|
|
|
if (!i) {
|
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
|
}
|
|
|
|
|
WAIT_4_SCB_CMD();
|
|
|
|
|
if ((p->scb->status & CU_ACTIVE)) { /* test it, because CU sometimes doesn't start immediately */
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (p->xmit_cmds[0]->cmd_status) {
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (i == 15) {
|
|
|
|
|
printk(KERN_WARNING "%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;
|
|
|
|
|
p->xmit_cmds[p->xmit_count]->cmd_link = 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;
|
|
|
|
|
if (p->xmit_count != p->xmit_last)
|
|
|
|
|
netif_wake_queue(dev);
|
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
|
#endif
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*******************************************
|
|
|
|
|
* Someone wanna have the statistics
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static struct net_device_stats *elmc_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 -= crc;
|
|
|
|
|
aln = p->scb->aln_errs;
|
|
|
|
|
p->scb->aln_errs -= aln;
|
|
|
|
|
rsc = p->scb->rsc_errs;
|
|
|
|
|
p->scb->rsc_errs -= rsc;
|
|
|
|
|
ovrn = p->scb->ovrn_errs;
|
|
|
|
|
p->scb->ovrn_errs -= ovrn;
|
|
|
|
|
|
|
|
|
|
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 ..
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifdef ELMC_MULTICAST
|
|
|
|
|
static void set_multicast_list(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
if (!dev->start) {
|
|
|
|
|
/* without a running interface, promiscuous doesn't work */
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
dev->start = 0;
|
|
|
|
|
alloc586(dev);
|
|
|
|
|
init586(dev);
|
|
|
|
|
startrecv586(dev);
|
|
|
|
|
dev->start = 1;
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
static void netdev_get_drvinfo(struct net_device *dev,
|
|
|
|
|
struct ethtool_drvinfo *info)
|
|
|
|
|
{
|
|
|
|
|
strcpy(info->driver, DRV_NAME);
|
|
|
|
|
strcpy(info->version, DRV_VERSION);
|
|
|
|
|
sprintf(info->bus_info, "MCA 0x%lx", dev->base_addr);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static struct ethtool_ops netdev_ethtool_ops = {
|
|
|
|
|
.get_drvinfo = netdev_get_drvinfo,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#ifdef MODULE
|
|
|
|
|
|
|
|
|
|
/* Increase if needed ;) */
|
|
|
|
|
#define MAX_3C523_CARDS 4
|
|
|
|
|
|
|
|
|
|
static struct net_device *dev_elmc[MAX_3C523_CARDS];
|
|
|
|
|
static int irq[MAX_3C523_CARDS];
|
|
|
|
|
static int io[MAX_3C523_CARDS];
|
|
|
|
|
module_param_array(irq, int, NULL, 0);
|
|
|
|
|
module_param_array(io, int, NULL, 0);
|
|
|
|
|
MODULE_PARM_DESC(io, "EtherLink/MC I/O base address(es)");
|
|
|
|
|
MODULE_PARM_DESC(irq, "EtherLink/MC IRQ number(s)");
|
2005-06-13 12:31:53 -07:00
|
|
|
MODULE_LICENSE("GPL");
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
int init_module(void)
|
|
|
|
|
{
|
|
|
|
|
int this_dev,found = 0;
|
|
|
|
|
|
|
|
|
|
/* Loop until we either can't find any more cards, or we have MAX_3C523_CARDS */
|
|
|
|
|
for(this_dev=0; this_dev<MAX_3C523_CARDS; this_dev++) {
|
|
|
|
|
struct net_device *dev = alloc_etherdev(sizeof(struct priv));
|
|
|
|
|
if (!dev)
|
|
|
|
|
break;
|
|
|
|
|
dev->irq=irq[this_dev];
|
|
|
|
|
dev->base_addr=io[this_dev];
|
|
|
|
|
if (do_elmc_probe(dev) == 0) {
|
2005-05-12 20:11:55 -04:00
|
|
|
dev_elmc[this_dev] = dev;
|
|
|
|
|
found++;
|
|
|
|
|
continue;
|
2005-04-16 15:20:36 -07:00
|
|
|
}
|
|
|
|
|
free_netdev(dev);
|
|
|
|
|
if (io[this_dev]==0)
|
|
|
|
|
break;
|
|
|
|
|
printk(KERN_WARNING "3c523.c: No 3c523 card found at io=%#x\n",io[this_dev]);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if(found==0) {
|
|
|
|
|
if(io[0]==0) printk(KERN_NOTICE "3c523.c: No 3c523 cards found\n");
|
|
|
|
|
return -ENXIO;
|
|
|
|
|
} else return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void cleanup_module(void)
|
|
|
|
|
{
|
|
|
|
|
int this_dev;
|
|
|
|
|
for (this_dev=0; this_dev<MAX_3C523_CARDS; this_dev++) {
|
|
|
|
|
struct net_device *dev = dev_elmc[this_dev];
|
|
|
|
|
if (dev) {
|
|
|
|
|
unregister_netdev(dev);
|
|
|
|
|
cleanup_card(dev);
|
|
|
|
|
free_netdev(dev);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif /* MODULE */
|
