2005-04-17 06:20:36 +08:00
|
|
|
/*
|
|
|
|
* Linux ARCnet driver - COM20020 chipset support
|
|
|
|
*
|
|
|
|
* Written 1997 by David Woodhouse.
|
|
|
|
* Written 1994-1999 by Avery Pennarun.
|
|
|
|
* Written 1999 by Martin Mares <mj@ucw.cz>.
|
|
|
|
* Derived from skeleton.c by Donald Becker.
|
|
|
|
*
|
|
|
|
* Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
|
|
|
|
* for sponsoring the further development of this driver.
|
|
|
|
*
|
|
|
|
* **********************
|
|
|
|
*
|
|
|
|
* The original copyright of skeleton.c was as follows:
|
|
|
|
*
|
|
|
|
* skeleton.c Written 1993 by Donald Becker.
|
|
|
|
* Copyright 1993 United States Government as represented by the
|
|
|
|
* Director, National Security Agency. This software may only be used
|
|
|
|
* and distributed according to the terms of the GNU General Public License as
|
|
|
|
* modified by SRC, incorporated herein by reference.
|
|
|
|
*
|
|
|
|
* **********************
|
|
|
|
*
|
|
|
|
* For more details, see drivers/net/arcnet.c
|
|
|
|
*
|
|
|
|
* **********************
|
|
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/types.h>
|
|
|
|
#include <linux/ioport.h>
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/errno.h>
|
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/netdevice.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/arcdevice.h>
|
|
|
|
#include <linux/com20020.h>
|
|
|
|
|
|
|
|
#include <asm/io.h>
|
|
|
|
|
|
|
|
#define VERSION "arcnet: COM20020 chipset support (by David Woodhouse et al.)\n"
|
|
|
|
|
|
|
|
static char *clockrates[] =
|
|
|
|
{"10 Mb/s", "Reserved", "5 Mb/s",
|
|
|
|
"2.5 Mb/s", "1.25Mb/s", "625 Kb/s", "312.5 Kb/s",
|
|
|
|
"156.25 Kb/s", "Reserved", "Reserved", "Reserved"};
|
|
|
|
|
|
|
|
static void com20020_command(struct net_device *dev, int command);
|
|
|
|
static int com20020_status(struct net_device *dev);
|
|
|
|
static void com20020_setmask(struct net_device *dev, int mask);
|
|
|
|
static int com20020_reset(struct net_device *dev, int really_reset);
|
|
|
|
static void com20020_copy_to_card(struct net_device *dev, int bufnum,
|
|
|
|
int offset, void *buf, int count);
|
|
|
|
static void com20020_copy_from_card(struct net_device *dev, int bufnum,
|
|
|
|
int offset, void *buf, int count);
|
|
|
|
static void com20020_set_mc_list(struct net_device *dev);
|
|
|
|
static void com20020_close(struct net_device *);
|
|
|
|
|
|
|
|
static void com20020_copy_from_card(struct net_device *dev, int bufnum,
|
|
|
|
int offset, void *buf, int count)
|
|
|
|
{
|
|
|
|
int ioaddr = dev->base_addr, ofs = 512 * bufnum + offset;
|
|
|
|
|
|
|
|
/* set up the address register */
|
|
|
|
outb((ofs >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI);
|
|
|
|
outb(ofs & 0xff, _ADDR_LO);
|
|
|
|
|
|
|
|
/* copy the data */
|
|
|
|
TIME("insb", count, insb(_MEMDATA, buf, count));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void com20020_copy_to_card(struct net_device *dev, int bufnum,
|
|
|
|
int offset, void *buf, int count)
|
|
|
|
{
|
|
|
|
int ioaddr = dev->base_addr, ofs = 512 * bufnum + offset;
|
|
|
|
|
|
|
|
/* set up the address register */
|
|
|
|
outb((ofs >> 8) | AUTOINCflag, _ADDR_HI);
|
|
|
|
outb(ofs & 0xff, _ADDR_LO);
|
|
|
|
|
|
|
|
/* copy the data */
|
|
|
|
TIME("outsb", count, outsb(_MEMDATA, buf, count));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Reset the card and check some basic stuff during the detection stage. */
|
|
|
|
int com20020_check(struct net_device *dev)
|
|
|
|
{
|
|
|
|
int ioaddr = dev->base_addr, status;
|
2008-11-13 15:37:49 +08:00
|
|
|
struct arcnet_local *lp = netdev_priv(dev);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
ARCRESET0;
|
|
|
|
mdelay(RESETtime);
|
|
|
|
|
|
|
|
lp->setup = lp->clockm ? 0 : (lp->clockp << 1);
|
|
|
|
lp->setup2 = (lp->clockm << 4) | 8;
|
|
|
|
|
|
|
|
/* CHECK: should we do this for SOHARD cards ? */
|
|
|
|
/* Enable P1Mode for backplane mode */
|
|
|
|
lp->setup = lp->setup | P1MODE;
|
|
|
|
|
|
|
|
SET_SUBADR(SUB_SETUP1);
|
|
|
|
outb(lp->setup, _XREG);
|
|
|
|
|
2007-02-16 17:42:27 +08:00
|
|
|
if (lp->clockm != 0)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
SET_SUBADR(SUB_SETUP2);
|
|
|
|
outb(lp->setup2, _XREG);
|
|
|
|
|
|
|
|
/* must now write the magic "restart operation" command */
|
|
|
|
mdelay(1);
|
|
|
|
outb(0x18, _COMMAND);
|
|
|
|
}
|
|
|
|
|
|
|
|
lp->config = 0x21 | (lp->timeout << 3) | (lp->backplane << 2);
|
|
|
|
/* set node ID to 0x42 (but transmitter is disabled, so it's okay) */
|
|
|
|
SETCONF;
|
|
|
|
outb(0x42, ioaddr + BUS_ALIGN*7);
|
|
|
|
|
|
|
|
status = ASTATUS();
|
|
|
|
|
|
|
|
if ((status & 0x99) != (NORXflag | TXFREEflag | RESETflag)) {
|
|
|
|
BUGMSG(D_NORMAL, "status invalid (%Xh).\n", status);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
BUGMSG(D_INIT_REASONS, "status after reset: %X\n", status);
|
|
|
|
|
|
|
|
/* Enable TX */
|
|
|
|
outb(0x39, _CONFIG);
|
|
|
|
outb(inb(ioaddr + BUS_ALIGN*8), ioaddr + BUS_ALIGN*7);
|
|
|
|
|
|
|
|
ACOMMAND(CFLAGScmd | RESETclear | CONFIGclear);
|
|
|
|
|
|
|
|
status = ASTATUS();
|
|
|
|
BUGMSG(D_INIT_REASONS, "status after reset acknowledged: %X\n",
|
|
|
|
status);
|
|
|
|
|
|
|
|
/* Read first location of memory */
|
|
|
|
outb(0 | RDDATAflag | AUTOINCflag, _ADDR_HI);
|
|
|
|
outb(0, _ADDR_LO);
|
|
|
|
|
|
|
|
if ((status = inb(_MEMDATA)) != TESTvalue) {
|
|
|
|
BUGMSG(D_NORMAL, "Signature byte not found (%02Xh != D1h).\n",
|
|
|
|
status);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Set up the struct net_device associated with this card. Called after
|
|
|
|
* probing succeeds.
|
|
|
|
*/
|
|
|
|
int com20020_found(struct net_device *dev, int shared)
|
|
|
|
{
|
|
|
|
struct arcnet_local *lp;
|
|
|
|
int ioaddr = dev->base_addr;
|
|
|
|
|
|
|
|
/* Initialize the rest of the device structure. */
|
|
|
|
|
2008-11-13 15:37:49 +08:00
|
|
|
lp = netdev_priv(dev);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
lp->hw.owner = THIS_MODULE;
|
|
|
|
lp->hw.command = com20020_command;
|
|
|
|
lp->hw.status = com20020_status;
|
|
|
|
lp->hw.intmask = com20020_setmask;
|
|
|
|
lp->hw.reset = com20020_reset;
|
|
|
|
lp->hw.copy_to_card = com20020_copy_to_card;
|
|
|
|
lp->hw.copy_from_card = com20020_copy_from_card;
|
|
|
|
lp->hw.close = com20020_close;
|
|
|
|
|
|
|
|
dev->set_multicast_list = com20020_set_mc_list;
|
|
|
|
|
|
|
|
if (!dev->dev_addr[0])
|
|
|
|
dev->dev_addr[0] = inb(ioaddr + BUS_ALIGN*8); /* FIXME: do this some other way! */
|
|
|
|
|
|
|
|
SET_SUBADR(SUB_SETUP1);
|
|
|
|
outb(lp->setup, _XREG);
|
|
|
|
|
|
|
|
if (lp->card_flags & ARC_CAN_10MBIT)
|
|
|
|
{
|
|
|
|
SET_SUBADR(SUB_SETUP2);
|
|
|
|
outb(lp->setup2, _XREG);
|
|
|
|
|
|
|
|
/* must now write the magic "restart operation" command */
|
|
|
|
mdelay(1);
|
|
|
|
outb(0x18, _COMMAND);
|
|
|
|
}
|
|
|
|
|
|
|
|
lp->config = 0x20 | (lp->timeout << 3) | (lp->backplane << 2) | 1;
|
|
|
|
/* Default 0x38 + register: Node ID */
|
|
|
|
SETCONF;
|
|
|
|
outb(dev->dev_addr[0], _XREG);
|
|
|
|
|
|
|
|
/* reserve the irq */
|
|
|
|
if (request_irq(dev->irq, &arcnet_interrupt, shared,
|
|
|
|
"arcnet (COM20020)", dev)) {
|
|
|
|
BUGMSG(D_NORMAL, "Can't get IRQ %d!\n", dev->irq);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
dev->base_addr = ioaddr;
|
|
|
|
|
|
|
|
BUGMSG(D_NORMAL, "%s: station %02Xh found at %03lXh, IRQ %d.\n",
|
|
|
|
lp->card_name, dev->dev_addr[0], dev->base_addr, dev->irq);
|
|
|
|
|
|
|
|
if (lp->backplane)
|
|
|
|
BUGMSG(D_NORMAL, "Using backplane mode.\n");
|
|
|
|
|
|
|
|
if (lp->timeout != 3)
|
|
|
|
BUGMSG(D_NORMAL, "Using extended timeout value of %d.\n", lp->timeout);
|
|
|
|
|
|
|
|
BUGMSG(D_NORMAL, "Using CKP %d - data rate %s.\n",
|
|
|
|
lp->setup >> 1,
|
|
|
|
clockrates[3 - ((lp->setup2 & 0xF0) >> 4) + ((lp->setup & 0x0F) >> 1)]);
|
|
|
|
|
|
|
|
if (register_netdev(dev)) {
|
|
|
|
free_irq(dev->irq, dev);
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Do a hardware reset on the card, and set up necessary registers.
|
|
|
|
*
|
|
|
|
* This should be called as little as possible, because it disrupts the
|
|
|
|
* token on the network (causes a RECON) and requires a significant delay.
|
|
|
|
*
|
|
|
|
* However, it does make sure the card is in a defined state.
|
|
|
|
*/
|
|
|
|
static int com20020_reset(struct net_device *dev, int really_reset)
|
|
|
|
{
|
2008-11-13 15:37:49 +08:00
|
|
|
struct arcnet_local *lp = netdev_priv(dev);
|
2005-04-17 06:20:36 +08:00
|
|
|
u_int ioaddr = dev->base_addr;
|
|
|
|
u_char inbyte;
|
|
|
|
|
|
|
|
BUGMSG(D_DEBUG, "%s: %d: %s: dev: %p, lp: %p, dev->name: %s\n",
|
2008-08-21 07:52:04 +08:00
|
|
|
__FILE__,__LINE__,__func__,dev,lp,dev->name);
|
2005-04-17 06:20:36 +08:00
|
|
|
BUGMSG(D_INIT, "Resetting %s (status=%02Xh)\n",
|
|
|
|
dev->name, ASTATUS());
|
|
|
|
|
2008-08-21 07:52:04 +08:00
|
|
|
BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__func__);
|
2005-04-17 06:20:36 +08:00
|
|
|
lp->config = TXENcfg | (lp->timeout << 3) | (lp->backplane << 2);
|
|
|
|
/* power-up defaults */
|
|
|
|
SETCONF;
|
2008-08-21 07:52:04 +08:00
|
|
|
BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__func__);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
if (really_reset) {
|
|
|
|
/* reset the card */
|
|
|
|
ARCRESET;
|
|
|
|
mdelay(RESETtime * 2); /* COM20020 seems to be slower sometimes */
|
|
|
|
}
|
|
|
|
/* clear flags & end reset */
|
2008-08-21 07:52:04 +08:00
|
|
|
BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__func__);
|
2005-04-17 06:20:36 +08:00
|
|
|
ACOMMAND(CFLAGScmd | RESETclear | CONFIGclear);
|
|
|
|
|
|
|
|
/* verify that the ARCnet signature byte is present */
|
2008-08-21 07:52:04 +08:00
|
|
|
BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__func__);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
com20020_copy_from_card(dev, 0, 0, &inbyte, 1);
|
2008-08-21 07:52:04 +08:00
|
|
|
BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__func__);
|
2005-04-17 06:20:36 +08:00
|
|
|
if (inbyte != TESTvalue) {
|
2008-08-21 07:52:04 +08:00
|
|
|
BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__func__);
|
2005-04-17 06:20:36 +08:00
|
|
|
BUGMSG(D_NORMAL, "reset failed: TESTvalue not present.\n");
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
/* enable extended (512-byte) packets */
|
|
|
|
ACOMMAND(CONFIGcmd | EXTconf);
|
2008-08-21 07:52:04 +08:00
|
|
|
BUGMSG(D_DEBUG, "%s: %d: %s\n",__FILE__,__LINE__,__func__);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* done! return success. */
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void com20020_setmask(struct net_device *dev, int mask)
|
|
|
|
{
|
|
|
|
u_int ioaddr = dev->base_addr;
|
|
|
|
BUGMSG(D_DURING, "Setting mask to %x at %x\n",mask,ioaddr);
|
|
|
|
AINTMASK(mask);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void com20020_command(struct net_device *dev, int cmd)
|
|
|
|
{
|
|
|
|
u_int ioaddr = dev->base_addr;
|
|
|
|
ACOMMAND(cmd);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int com20020_status(struct net_device *dev)
|
|
|
|
{
|
|
|
|
u_int ioaddr = dev->base_addr;
|
|
|
|
|
|
|
|
return ASTATUS() + (ADIAGSTATUS()<<8);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void com20020_close(struct net_device *dev)
|
|
|
|
{
|
2008-11-13 15:37:49 +08:00
|
|
|
struct arcnet_local *lp = netdev_priv(dev);
|
2005-04-17 06:20:36 +08:00
|
|
|
int ioaddr = dev->base_addr;
|
|
|
|
|
|
|
|
/* disable transmitter */
|
|
|
|
lp->config &= ~TXENcfg;
|
|
|
|
SETCONF;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Set or clear the multicast filter for this adaptor.
|
|
|
|
* num_addrs == -1 Promiscuous mode, receive all packets
|
|
|
|
* num_addrs == 0 Normal mode, clear multicast list
|
|
|
|
* num_addrs > 0 Multicast mode, receive normal and MC packets, and do
|
|
|
|
* best-effort filtering.
|
|
|
|
* FIXME - do multicast stuff, not just promiscuous.
|
|
|
|
*/
|
|
|
|
static void com20020_set_mc_list(struct net_device *dev)
|
|
|
|
{
|
2008-11-13 15:37:49 +08:00
|
|
|
struct arcnet_local *lp = netdev_priv(dev);
|
2005-04-17 06:20:36 +08:00
|
|
|
int ioaddr = dev->base_addr;
|
|
|
|
|
|
|
|
if ((dev->flags & IFF_PROMISC) && (dev->flags & IFF_UP)) { /* Enable promiscuous mode */
|
|
|
|
if (!(lp->setup & PROMISCset))
|
|
|
|
BUGMSG(D_NORMAL, "Setting promiscuous flag...\n");
|
|
|
|
SET_SUBADR(SUB_SETUP1);
|
|
|
|
lp->setup |= PROMISCset;
|
|
|
|
outb(lp->setup, _XREG);
|
|
|
|
} else
|
|
|
|
/* Disable promiscuous mode, use normal mode */
|
|
|
|
{
|
|
|
|
if ((lp->setup & PROMISCset))
|
|
|
|
BUGMSG(D_NORMAL, "Resetting promiscuous flag...\n");
|
|
|
|
SET_SUBADR(SUB_SETUP1);
|
|
|
|
lp->setup &= ~PROMISCset;
|
|
|
|
outb(lp->setup, _XREG);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-11-09 11:51:03 +08:00
|
|
|
#if defined(CONFIG_ARCNET_COM20020_PCI_MODULE) || \
|
2007-02-12 16:52:22 +08:00
|
|
|
defined(CONFIG_ARCNET_COM20020_ISA_MODULE) || \
|
|
|
|
defined(CONFIG_ARCNET_COM20020_CS_MODULE)
|
2005-04-17 06:20:36 +08:00
|
|
|
EXPORT_SYMBOL(com20020_check);
|
|
|
|
EXPORT_SYMBOL(com20020_found);
|
2006-11-09 11:51:03 +08:00
|
|
|
#endif
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
2006-11-09 11:51:03 +08:00
|
|
|
#ifdef MODULE
|
|
|
|
|
2008-02-28 15:31:08 +08:00
|
|
|
static int __init com20020_module_init(void)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
BUGLVL(D_NORMAL) printk(VERSION);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-02-28 15:31:08 +08:00
|
|
|
static void __exit com20020_module_exit(void)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
}
|
2008-02-28 15:31:08 +08:00
|
|
|
module_init(com20020_module_init);
|
|
|
|
module_exit(com20020_module_exit);
|
2005-04-17 06:20:36 +08:00
|
|
|
#endif /* MODULE */
|