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