blob: 4938a2208a37ce72371f245c78cf9de7d3c90345 [file] [log] [blame]
/* orinoco_pci.c
* Driver for Prism 2.5/3 devices that have a direct PCI interface
* (i.e. these are not PCMCIA cards in a PCMCIA-to-PCI bridge).
* The card contains only one PCI region, which contains all the usual
* hermes registers, as well as the COR register.
* Current maintainers are:
* Pavel Roskin <proski AT>
* and David Gibson <hermes AT>
* Some of this code is borrowed from orinoco_plx.c
* Copyright (C) 2001 Daniel Barlow <dan AT>
* 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.
* This file originally written by:
* Copyright (C) 2001 Jean Tourrilhes <jt AT>
* And is now maintained by:
* (C) Copyright David Gibson, IBM Corp. 2002-2003.
* 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
* 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_pci"
#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 "orinoco.h"
#include "orinoco_pci.h"
/* Offset of the COR register of the PCI card */
#define HERMES_PCI_COR (0x26)
/* Bitmask to reset the card */
#define HERMES_PCI_COR_MASK (0x0080)
/* Magic timeouts for doing the reset.
* Those times are straight from wlan-ng, and it is claimed that they
* are necessary. Alan will kill me. Take your time and grab a coffee. */
#define HERMES_PCI_COR_ONT (250) /* ms */
#define HERMES_PCI_COR_OFFT (500) /* ms */
#define HERMES_PCI_COR_BUSYT (500) /* ms */
* 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 : This code is done with irq enabled. This mean that many
* interrupts will occur while we are there. This is why we use the
* jiffies to regulate time instead of a straight mdelay(). Usually we
* need only around 245 iteration of the loop to do 250 ms delay.
* Note bis : Don't try to access HERMES_CMD during the reset phase.
* It just won't work !
static int orinoco_pci_cor_reset(struct orinoco_private *priv)
struct hermes *hw = &priv->hw;
unsigned long timeout;
u16 reg;
/* Assert the reset until the card notices */
hermes_write_regn(hw, PCI_COR, HERMES_PCI_COR_MASK);
/* Give time for the card to recover from this hard effort */
hermes_write_regn(hw, PCI_COR, 0x0000);
/* The card is ready when it's no longer busy */
timeout = jiffies + msecs_to_jiffies(HERMES_PCI_COR_BUSYT);
reg = hermes_read_regn(hw, CMD);
while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
reg = hermes_read_regn(hw, CMD);
/* Still busy? */
if (reg & HERMES_CMD_BUSY) {
printk(KERN_ERR PFX "Busy timeout\n");
return -ETIMEDOUT;
return 0;
static int orinoco_pci_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
int err;
struct orinoco_private *priv;
struct orinoco_pci_card *card;
void __iomem *hermes_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;
hermes_io = pci_iomap(pdev, 0, 0);
if (!hermes_io) {
printk(KERN_ERR PFX "Cannot remap chipset registers\n");
err = -EIO;
goto fail_map_hermes;
/* Allocate network device */
priv = alloc_orinocodev(sizeof(*card), &pdev->dev,
orinoco_pci_cor_reset, NULL);
if (!priv) {
printk(KERN_ERR PFX "Cannot allocate network device\n");
err = -ENOMEM;
goto fail_alloc;
card = priv->card;
hermes_struct_init(&priv->hw, hermes_io, HERMES_32BIT_REGSPACING);
err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
if (err) {
printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
err = -EBUSY;
goto fail_irq;
err = orinoco_pci_cor_reset(priv);
if (err) {
printk(KERN_ERR PFX "Initial reset failed\n");
goto fail;
err = orinoco_init(priv);
if (err) {
printk(KERN_ERR PFX "orinoco_init() failed\n");
goto fail;
err = orinoco_if_add(priv, 0, 0, NULL);
if (err) {
printk(KERN_ERR PFX "orinoco_if_add() failed\n");
goto fail_wiphy;
pci_set_drvdata(pdev, priv);
return 0;
free_irq(pdev->irq, priv);
pci_iounmap(pdev, hermes_io);
return err;
static void orinoco_pci_remove_one(struct pci_dev *pdev)
struct orinoco_private *priv = pci_get_drvdata(pdev);
free_irq(pdev->irq, priv);
pci_iounmap(pdev, priv->hw.iobase);
static const struct pci_device_id orinoco_pci_id_table[] = {
/* Intersil Prism 3 */
{0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID,},
/* Intersil Prism 2.5 */
{0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID,},
/* Samsung MagicLAN SWL-2210P */
{0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID,},
MODULE_DEVICE_TABLE(pci, orinoco_pci_id_table);
static struct pci_driver orinoco_pci_driver = {
.name = DRIVER_NAME,
.id_table = orinoco_pci_id_table,
.probe = orinoco_pci_init_one,
.remove = orinoco_pci_remove_one,
.suspend = orinoco_pci_suspend,
.resume = orinoco_pci_resume,
static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
" (Pavel Roskin <>,"
" David Gibson <> &"
" Jean Tourrilhes <>)";
MODULE_AUTHOR("Pavel Roskin <> &"
" David Gibson <>");
MODULE_DESCRIPTION("Driver for wireless LAN cards using direct PCI interface");
static int __init orinoco_pci_init(void)
printk(KERN_DEBUG "%s\n", version);
return pci_register_driver(&orinoco_pci_driver);
static void __exit orinoco_pci_exit(void)
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* tab-width: 8
* End: