drivers/net/wireless/intersil/orinoco/orinoco_tmd.c - vendor/opensource/backports - Git at Google

 /* orinoco_tmd.c
  *
  * Driver for Prism II devices which would usually be driven by orinoco_cs,
  * but are connected to the PCI bus by a TMD7160.
  *
  * Copyright (C) 2003 Joerg Dorchain <joerg AT dorchain.net>
  * based heavily upon orinoco_plx.c Copyright (C) 2001 Daniel Barlow
  *
  * 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.
  *
  * The actual driving is done by main.c, this is just resource
  * allocation stuff.
  *
  * This driver is modeled after the orinoco_plx driver. The main
  * difference is that the TMD chip has only IO port ranges and doesn't
  * provide access to the PCMCIA attribute space.
  *
  * Pheecom sells cards with the TMD chip as "ASIC version"
  */

 #define DRIVER_NAME "orinoco_tmd"
 #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_VALUE	(COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
 #define COR_RESET     (0x80)	/* reset bit in the COR register */
 #define TMD_RESET_TIME	(500)	/* milliseconds */

 /*
  * Do a soft reset of the card using the Configuration Option Register
  */
 static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
 {
 	struct hermes *hw = &priv->hw;
 	struct orinoco_pci_card *card = priv->card;
 	unsigned long timeout;
 	u16 reg;

 	iowrite8(COR_VALUE | COR_RESET, card->bridge_io);
 	mdelay(1);

 	iowrite8(COR_VALUE, card->bridge_io);
 	mdelay(1);

 	/* Just in case, wait more until the card is no longer busy */
 	timeout = jiffies + msecs_to_jiffies(TMD_RESET_TIME);
 	reg = hermes_read_regn(hw, CMD);
 	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
 		mdelay(1);
 		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_tmd_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, *bridge_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, 1, 0);
 	if (!bridge_io) {
 		printk(KERN_ERR PFX "Cannot map bridge registers\n");
 		err = -EIO;
 		goto fail_map_bridge;
 	}

 	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 */
 	priv = alloc_orinocodev(sizeof(*card), &pdev->dev,
 				orinoco_tmd_cor_reset, NULL);
 	if (!priv) {
 		printk(KERN_ERR PFX "Cannot allocate network device\n");
 		err = -ENOMEM;
 		goto fail_alloc;
 	}

 	card = priv->card;
 	card->bridge_io = bridge_io;

 	hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);

 	err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
 			  DRIVER_NAME, priv);
 	if (err) {
 		printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
 		err = -EBUSY;
 		goto fail_irq;
 	}

 	err = orinoco_tmd_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;
 	}

 	pci_set_drvdata(pdev, priv);

 	return 0;

  fail:
 	free_irq(pdev->irq, priv);

  fail_irq:
 	free_orinocodev(priv);

  fail_alloc:
 	pci_iounmap(pdev, hermes_io);

  fail_map_hermes:
 	pci_iounmap(pdev, bridge_io);

  fail_map_bridge:
 	pci_release_regions(pdev);

  fail_resources:
 	pci_disable_device(pdev);

 	return err;
 }

 static void orinoco_tmd_remove_one(struct pci_dev *pdev)
 {
 	struct orinoco_private *priv = pci_get_drvdata(pdev);
 	struct orinoco_pci_card *card = priv->card;

 	orinoco_if_del(priv);
 	free_irq(pdev->irq, priv);
 	free_orinocodev(priv);
 	pci_iounmap(pdev, priv->hw.iobase);
 	pci_iounmap(pdev, card->bridge_io);
 	pci_release_regions(pdev);
 	pci_disable_device(pdev);
 }

 static const struct pci_device_id orinoco_tmd_id_table[] = {
 	{0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,},      /* NDC and OEMs, e.g. pheecom */
 	{0,},
 };

 MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);

 static struct pci_driver orinoco_tmd_driver = {
 	.name		= DRIVER_NAME,
 	.id_table	= orinoco_tmd_id_table,
 	.probe		= orinoco_tmd_init_one,
 	.remove		= orinoco_tmd_remove_one,
 	.suspend	= orinoco_pci_suspend,
 	.resume		= orinoco_pci_resume,
 };

 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
 	" (Joerg Dorchain <joerg@dorchain.net>)";
 MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
 MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
 MODULE_LICENSE("Dual MPL/GPL");

 static int __init orinoco_tmd_init(void)
 {
 	printk(KERN_DEBUG "%s\n", version);
 	return pci_register_driver(&orinoco_tmd_driver);
 }

 static void __exit orinoco_tmd_exit(void)
 {
 	pci_unregister_driver(&orinoco_tmd_driver);
 }

 module_init(orinoco_tmd_init);
 module_exit(orinoco_tmd_exit);

 /*
  * Local variables:
  *  c-indent-level: 8
  *  c-basic-offset: 8
  *  tab-width: 8
  * End:
  */
	/* orinoco_tmd.c
	*
	* Driver for Prism II devices which would usually be driven by orinoco_cs,
	* but are connected to the PCI bus by a TMD7160.
	*
	* Copyright (C) 2003 Joerg Dorchain <joerg AT dorchain.net>
	* based heavily upon orinoco_plx.c Copyright (C) 2001 Daniel Barlow
	*
	* 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.
	*
	* The actual driving is done by main.c, this is just resource
	* allocation stuff.
	*
	* This driver is modeled after the orinoco_plx driver. The main
	* difference is that the TMD chip has only IO port ranges and doesn't
	* provide access to the PCMCIA attribute space.
	*
	* Pheecom sells cards with the TMD chip as "ASIC version"
	*/

	#define DRIVER_NAME "orinoco_tmd"
	#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_VALUE (COR_LEVEL_REQ \| COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
	#define COR_RESET (0x80) /* reset bit in the COR register */
	#define TMD_RESET_TIME (500) /* milliseconds */

	/*
	* Do a soft reset of the card using the Configuration Option Register
	*/
	static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
	{
	struct hermes *hw = &priv->hw;
	struct orinoco_pci_card *card = priv->card;
	unsigned long timeout;
	u16 reg;

	iowrite8(COR_VALUE \| COR_RESET, card->bridge_io);
	mdelay(1);

	iowrite8(COR_VALUE, card->bridge_io);
	mdelay(1);

	/* Just in case, wait more until the card is no longer busy */
	timeout = jiffies + msecs_to_jiffies(TMD_RESET_TIME);
	reg = hermes_read_regn(hw, CMD);
	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
	mdelay(1);
	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_tmd_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, bridge_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, 1, 0);
	if (!bridge_io) {
	printk(KERN_ERR PFX "Cannot map bridge registers\n");
	err = -EIO;
	goto fail_map_bridge;
	}

	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 */
	priv = alloc_orinocodev(sizeof(*card), &pdev->dev,
	orinoco_tmd_cor_reset, NULL);
	if (!priv) {
	printk(KERN_ERR PFX "Cannot allocate network device\n");
	err = -ENOMEM;
	goto fail_alloc;
	}

	card = priv->card;
	card->bridge_io = bridge_io;

	hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);

	err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
	DRIVER_NAME, priv);
	if (err) {
	printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
	err = -EBUSY;
	goto fail_irq;
	}

	err = orinoco_tmd_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;
	}

	pci_set_drvdata(pdev, priv);

	return 0;

	fail:
	free_irq(pdev->irq, priv);

	fail_irq:
	free_orinocodev(priv);

	fail_alloc:
	pci_iounmap(pdev, hermes_io);

	fail_map_hermes:
	pci_iounmap(pdev, bridge_io);

	fail_map_bridge:
	pci_release_regions(pdev);

	fail_resources:
	pci_disable_device(pdev);

	return err;
	}

	static void orinoco_tmd_remove_one(struct pci_dev *pdev)
	{
	struct orinoco_private *priv = pci_get_drvdata(pdev);
	struct orinoco_pci_card *card = priv->card;

	orinoco_if_del(priv);
	free_irq(pdev->irq, priv);
	free_orinocodev(priv);
	pci_iounmap(pdev, priv->hw.iobase);
	pci_iounmap(pdev, card->bridge_io);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	}

	static const struct pci_device_id orinoco_tmd_id_table[] = {
	{0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,}, /* NDC and OEMs, e.g. pheecom */
	{0,},
	};

	MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);

	static struct pci_driver orinoco_tmd_driver = {
	.name = DRIVER_NAME,
	.id_table = orinoco_tmd_id_table,
	.probe = orinoco_tmd_init_one,
	.remove = orinoco_tmd_remove_one,
	.suspend = orinoco_pci_suspend,
	.resume = orinoco_pci_resume,
	};

	static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
	" (Joerg Dorchain <joerg@dorchain.net>)";
	MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
	MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
	MODULE_LICENSE("Dual MPL/GPL");

	static int __init orinoco_tmd_init(void)
	{
	printk(KERN_DEBUG "%s\n", version);
	return pci_register_driver(&orinoco_tmd_driver);
	}

	static void __exit orinoco_tmd_exit(void)
	{
	pci_unregister_driver(&orinoco_tmd_driver);
	}

	module_init(orinoco_tmd_init);
	module_exit(orinoco_tmd_exit);

	/*
	* Local variables:
	* c-indent-level: 8
	* c-basic-offset: 8
	* tab-width: 8
	* End:
	*/