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linux/drivers/net/arcnet/com20020-pci.c
Jeff Morrow 52edc17f94 bugfixes and new hardware support for arcnet driver 
The modifications and bug fixes noted below were done by Realtime Control
Works and Contemporary Control Systems, Inc, Jan 2005.  They were
incorporated into the 2.6 kernel by Jeff Morrow of Sierra Analytics, Feb
2007.  <jmorrow@massspec.com>

The changes have been tested on a Contemporary Controls PCI20U-4000.

Summary of changes:

Arc-rawmode.c:
      rx():
      - Fixed error in received packet lengths; 256 byte packets were
        being received as 257 bytes packets.

      prepare_tx():
      - Fixed error in transmit length calcs; 257 byte packets were being
        transmitted as 260 byte packets.

com20020.c:
      com20020_check():
      - We now load the SETUP2 register if the 'clockm' parameter is
        non-zero, instead of checking for ARC_CAN_10MBIT. The user is
        now responsible for whether or not SETUP2 is loaded.  If the
        clock multiplier is non-zero, this means that the user wants a
        baud rate greater than 2.5Mbps. This is not possible unless the
        SETUP2 register is present (COM20020D, or COM20022). So, we're
        relying on the user to be smart about what kind of chip he's
        dealing with...

com20020-pci.c
      - Added several entries to com20020pci_id_table[].

Signed-off-by: Jeff Morrow <jmorrow@massspec.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-17 15:30:48 -05:00

193 lines
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/*
* Linux ARCnet driver - COM20020 PCI support
* Contemporary Controls PCI20 and SOHARD SH-ARC PCI
*
* Written 1994-1999 by Avery Pennarun,
* based on an ISA version by David Woodhouse.
* Written 1999-2000 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/moduleparam.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/arcdevice.h>
#include <linux/com20020.h>
#include <asm/io.h>
#define VERSION "arcnet: COM20020 PCI support\n"
/* Module parameters */
static int node;
static char device[9]; /* use eg. device="arc1" to change name */
static int timeout = 3;
static int backplane;
static int clockp;
static int clockm;
module_param(node, int, 0);
module_param_string(device, device, sizeof(device), 0);
module_param(timeout, int, 0);
module_param(backplane, int, 0);
module_param(clockp, int, 0);
module_param(clockm, int, 0);
MODULE_LICENSE("GPL");
static int __devinit com20020pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct net_device *dev;
struct arcnet_local *lp;
int ioaddr, err;
if (pci_enable_device(pdev))
return -EIO;
dev = alloc_arcdev(device);
if (!dev)
return -ENOMEM;
lp = dev->priv;
pci_set_drvdata(pdev, dev);
// SOHARD needs PCI base addr 4
if (pdev->vendor==0x10B5) {
BUGMSG(D_NORMAL, "SOHARD\n");
ioaddr = pci_resource_start(pdev, 4);
}
else {
BUGMSG(D_NORMAL, "Contemporary Controls\n");
ioaddr = pci_resource_start(pdev, 2);
}
if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "com20020-pci")) {
BUGMSG(D_INIT, "IO region %xh-%xh already allocated.\n",
ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
err = -EBUSY;
goto out_dev;
}
// Dummy access after Reset
// ARCNET controller needs this access to detect bustype
outb(0x00,ioaddr+1);
inb(ioaddr+1);
dev->base_addr = ioaddr;
dev->irq = pdev->irq;
dev->dev_addr[0] = node;
lp->card_name = "PCI COM20020";
lp->card_flags = id->driver_data;
lp->backplane = backplane;
lp->clockp = clockp & 7;
lp->clockm = clockm & 3;
lp->timeout = timeout;
lp->hw.owner = THIS_MODULE;
if (ASTATUS() == 0xFF) {
BUGMSG(D_NORMAL, "IO address %Xh was reported by PCI BIOS, "
"but seems empty!\n", ioaddr);
err = -EIO;
goto out_port;
}
if (com20020_check(dev)) {
err = -EIO;
goto out_port;
}
if ((err = com20020_found(dev, IRQF_SHARED)) != 0)
goto out_port;
return 0;
out_port:
release_region(ioaddr, ARCNET_TOTAL_SIZE);
out_dev:
free_netdev(dev);
return err;
}
static void __devexit com20020pci_remove(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
unregister_netdev(dev);
free_irq(dev->irq, dev);
release_region(dev->base_addr, ARCNET_TOTAL_SIZE);
free_netdev(dev);
}
static struct pci_device_id com20020pci_id_table[] = {
{ 0x1571, 0xa001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0x1571, 0xa002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0x1571, 0xa003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0x1571, 0xa004, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0x1571, 0xa005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0x1571, 0xa006, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0x1571, 0xa007, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0x1571, 0xa008, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0x1571, 0xa009, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
{ 0x1571, 0xa00a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
{ 0x1571, 0xa00b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
{ 0x1571, 0xa00c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
{ 0x1571, 0xa00d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
{ 0x1571, 0xa00e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_IS_5MBIT },
{ 0x1571, 0xa201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
{ 0x1571, 0xa202, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
{ 0x1571, 0xa203, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
{ 0x1571, 0xa204, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
{ 0x1571, 0xa205, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
{ 0x1571, 0xa206, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
{ 0x10B5, 0x9030, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
{ 0x10B5, 0x9050, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
{ 0x14BA, 0x6000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
{ 0x10B5, 0x2200, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ARC_CAN_10MBIT },
{0,}
};
MODULE_DEVICE_TABLE(pci, com20020pci_id_table);
static struct pci_driver com20020pci_driver = {
.name = "com20020",
.id_table = com20020pci_id_table,
.probe = com20020pci_probe,
.remove = __devexit_p(com20020pci_remove),
};
static int __init com20020pci_init(void)
{
BUGLVL(D_NORMAL) printk(VERSION);
return pci_register_driver(&com20020pci_driver);
}
static void __exit com20020pci_cleanup(void)
{
pci_unregister_driver(&com20020pci_driver);
}
module_init(com20020pci_init)
module_exit(com20020pci_cleanup)
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