/* orinoco_nortel.c
*
* Driver for Prism II devices which would usually be driven by orinoco_cs,
* but are connected to the PCI bus by a PCI-to-PCMCIA adapter used in
* Nortel emobility, Symbol LA-4113 and Symbol LA-4123.
*
* Copyright (C) 2002 Tobias Hoffmann
* (C) 2003 Christoph Jungegger <disdos@traum404.de>
*
* Some of this code is borrowed from orinoco_plx.c
* Copyright (C) 2001 Daniel Barlow
* Some of this code is borrowed from orinoco_pci.c
* Copyright (C) 2001 Jean Tourrilhes
* Some of this code is "inspired" by linux-wlan-ng-0.1.10, but nothing
* has been copied from it. linux-wlan-ng-0.1.10 is originally :
* Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License
* at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and
* limitations under the License.
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License version 2 (the "GPL"), in
* which case the provisions of the GPL are applicable instead of the
* above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use your
* version of this file under the MPL, indicate your decision by
* deleting the provisions above and replace them with the notice and
* other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file
* under either the MPL or the GPL.
*/
#define DRIVER_NAME "orinoco_nortel"
#define PFX DRIVER_NAME ": "
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <pcmcia/cisreg.h>
#include "orinoco.h"
#include "orinoco_pci.h"
#define COR_OFFSET (0xe0) /* COR attribute offset of Prism2 PC card */
#define COR_VALUE (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
/*
* Do a soft reset of the card using the Configuration Option Register
* We need this to get going...
* This is the part of the code that is strongly inspired from wlan-ng
*
* Note bis : Don't try to access HERMES_CMD during the reset phase.
* It just won't work !
*/
static int orinoco_nortel_cor_reset(struct orinoco_private *priv)
{
struct orinoco_pci_card *card = priv->card;
/* Assert the reset until the card notices */
iowrite16(8, card->bridge_io + 2);
ioread16(card->attr_io + COR_OFFSET);
iowrite16(0x80, card->attr_io + COR_OFFSET);
mdelay(1);
/* Give time for the card to recover from this hard effort */
iowrite16(0, card->attr_io + COR_OFFSET);
iowrite16(0, card->attr_io + COR_OFFSET);
mdelay(1);
/* Set COR as usual */
iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
mdelay(1);
iowrite16(0x228, card->bridge_io + 2);
return 0;
}
static int orinoco_nortel_hw_init(struct orinoco_pci_card *card)
{
int i;
u32 reg;
/* Setup bridge */
if (ioread16(card->bridge_io) & 1) {
printk(KERN_ERR PFX "brg1 answer1 wrong\n");
return -EBUSY;
}
iowrite16(0x118, card->bridge_io + 2);
iowrite16(0x108, card->bridge_io + 2);
mdelay(30);
iowrite16(0x8, card->bridge_io + 2);
for (i = 0; i < 30; i++) {
mdelay(30);
if (ioread16(card->bridge_io) & 0x10) {
break;
}
}
if (i == 30) {
printk(KERN_ERR PFX "brg1 timed out\n");
return -EBUSY;
}
if (ioread16(card->attr_io + COR_OFFSET) & 1) {
printk(KERN_ERR PFX "brg2 answer1 wrong\n");
return -EBUSY;
}
if (ioread16(card->attr_io + COR_OFFSET + 2) & 1) {
printk(KERN_ERR PFX "brg2 answer2 wrong\n");
return -EBUSY;
}
if (ioread16(card->attr_io + COR_OFFSET + 4) & 1) {
printk(KERN_ERR PFX "brg2 answer3 wrong\n");
return -EBUSY;
}
/* Set the PCMCIA COR register */
iowrite16(COR_VALUE, card->attr_io + COR_OFFSET);
mdelay(1);
reg = ioread16(card->attr_io + COR_OFFSET);
if (reg != COR_VALUE) {
printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n",
reg);
return -EBUSY;
}
/* Set LEDs */
iowrite16(1, card->bridge_io + 10);
return 0;
}
static int orinoco_nortel_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int err;
struct orinoco_private *priv;
struct orinoco_pci_card *card;
struct net_device *dev;
void __iomem *hermes_io, *bridge_io, *attr_io;
err = pci_enable_device(pdev);
if (err) {
printk(KERN_ERR PFX "Cannot enable PCI device\n");
return err;
}
err = pci_request_regions(pdev, DRIVER_NAME);
if (err) {
printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
goto fail_resources;
}
bridge_io = pci_iomap(pdev, 0, 0);
if (!bridge_io) {
printk(KERN_ERR PFX "Cannot map bridge registers\n");
err = -EIO;
goto fail_map_bridge;
}
attr_io = pci_iomap(pdev, 1, 0);
if (!attr_io) {
printk(KERN_ERR PFX "Cannot map PCMCIA attributes\n");
err = -EIO;
goto fail_map_attr;
}
hermes_io = pci_iomap(pdev, 2, 0);
if (!hermes_io) {
printk(KERN_ERR PFX "Cannot map chipset registers\n");
err = -EIO;
goto fail_map_hermes;
}
/* Allocate network device */
dev = alloc_orinocodev(sizeof(*card), orinoco_nortel_cor_reset);
if (!dev) {
printk(KERN_ERR PFX "Cannot allocate network device\n");
err = -ENOMEM;
goto fail_alloc;
}
priv = netdev_priv(dev);
card = priv->card;
card->bridge_io = bridge_io;
card->attr_io = attr_io;
SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &pdev->dev);
hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
dev->name, dev);
if (err) {
printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
err = -EBUSY;
goto fail_irq;
}
err = orinoco_nortel_hw_init(card);
if (err) {
printk(KERN_ERR PFX "Hardware initialization failed\n");
goto fail;
}
err = orinoco_nortel_cor_reset(priv);
if (err) {
printk(KERN_ERR PFX "Initial reset failed\n");
goto fail;
}
err = register_netdev(dev);
if (err) {
printk(KERN_ERR PFX "Cannot register network device\n");
goto fail;
}
pci_set_drvdata(pdev, dev);
printk(KERN_DEBUG "%s: " DRIVER_NAME " at %s\n", dev->name,
pci_name(pdev));
return 0;
fail:
free_irq(pdev->irq, dev);
fail_irq:
pci_set_drvdata(pdev, NULL);
free_orinocodev(dev);
fail_alloc:
pci_iounmap(pdev, hermes_io);
fail_map_hermes:
pci_iounmap(pdev, attr_io);
fail_map_attr:
pci_iounmap(pdev, bridge_io);
fail_map_bridge:
pci_release_regions(pdev);
fail_resources:
pci_disable_device(pdev);
return err;
}
static void __devexit orinoco_nortel_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct orinoco_private *priv = netdev_priv(dev);
struct orinoco_pci_card *card = priv->card;
/* Clear LEDs */
iowrite16(0, card->bridge_io + 10);
unregister_netdev(dev);
free_irq(pdev->irq, dev);
pci_set_drvdata(pdev, NULL);
free_orinocodev(dev);
pci_iounmap(pdev, priv->hw.iobase);
pci_iounmap(pdev, card->attr_io);
pci_iounmap(pdev, card->bridge_io);
pci_release_regions(pdev);
pci_disable_device(pdev);
}
static struct pci_device_id orinoco_nortel_id_table[] = {
/* Nortel emobility PCI */
{0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,},
/* Symbol LA-4123 PCI */
{0x1562, 0x0001, PCI_ANY_ID, PCI_ANY_ID,},
{0,},
};
MODULE_DEVICE_TABLE(pci, orinoco_nortel_id_table);
static struct pci_driver orinoco_nortel_driver = {
.name = DRIVER_NAME,
.id_table = orinoco_nortel_id_table,
.probe = orinoco_nortel_init_one,
.remove = __devexit_p(orinoco_nortel_remove_one),
.suspend = orinoco_pci_suspend,
.resume = orinoco_pci_resume,
};
static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
" (Tobias Hoffmann & Christoph Jungegger <disdos@traum404.de>)";
MODULE_AUTHOR("Christoph Jungegger <disdos@traum404.de>");
MODULE_DESCRIPTION
("Driver for wireless LAN cards using the Nortel PCI bridge");
MODULE_LICENSE("Dual MPL/GPL");
static int __init orinoco_nortel_init(void)
{
printk(KERN_DEBUG "%s\n", version);
return pci_register_driver(&orinoco_nortel_driver);
}
static void __exit orinoco_nortel_exit(void)
{
pci_unregister_driver(&orinoco_nortel_driver);
}
module_init(orinoco_nortel_init);
module_exit(orinoco_nortel_exit);
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* tab-width: 8
* End:
*/
