drivers/net/wireless/orinoco_nortel.c - linux/kernel/git/davem/net-next - Git at Google

 /* 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:
  */
	/* 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:
	*/