drivers/net/wireless/orinoco_tmd.c - third_party/linux - 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.

  * Caution: this is experimental and probably buggy.  For success and
  * failure reports for different cards and adaptors, see
  * orinoco_tmd_pci_id_table near the end of the file.  If you have a
  * card we don't have the PCI id for, and looks like it should work,
  * drop me mail with the id and "it works"/"it doesn't work".
  *
  * Note: if everything gets detected fine but it doesn't actually send
  * or receive packets, your first port of call should probably be to
  * try newer firmware in the card.  Especially if you're doing Ad-Hoc
  * modes
  *
  * The actual driving is done by orinoco.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 no
  * memory space, i.e.  no access to the CIS. Compared to the PLX chip,
  * the io range functionalities are exchanged.
  *
  * Pheecom sells cards with the TMD chip as "ASIC version"
  */

 #define DRIVER_NAME "orinoco_tmd"
 #define PFX DRIVER_NAME ": "

 #include <linux/config.h>
 #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"

 #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 */

 /* Orinoco TMD specific data */
 struct orinoco_tmd_card {
 	u32 tmd_io;
 };


 /*
  * Do a soft reset of the card using the Configuration Option Register
  */
 static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
 {
 	hermes_t *hw = &priv->hw;
 	struct orinoco_tmd_card *card = priv->card;
 	u32 addr = card->tmd_io;
 	unsigned long timeout;
 	u16 reg;

 	outb(COR_VALUE | COR_RESET, addr);
 	mdelay(1);

 	outb(COR_VALUE, addr);
 	mdelay(1);

 	/* Just in case, wait more until the card is no longer busy */
 	timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
 	reg = hermes_read_regn(hw, CMD);
 	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
 		mdelay(1);
 		reg = hermes_read_regn(hw, CMD);
 	}

 	/* Did we timeout ? */
 	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 = 0;
 	struct orinoco_private *priv = NULL;
 	struct orinoco_tmd_card *card;
 	struct net_device *dev = NULL;
 	void __iomem *mem;

 	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 != 0) {
 		printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
 		goto fail_resources;
 	}

 	mem = pci_iomap(pdev, 2, 0);
 	if (! mem) {
 		err = -ENOMEM;
 		goto fail_iomap;
 	}

 	/* Allocate network device */
 	dev = alloc_orinocodev(sizeof(*card), orinoco_tmd_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->tmd_io = pci_resource_start(pdev, 1);
 	dev->base_addr = pci_resource_start(pdev, 2);
 	SET_MODULE_OWNER(dev);
 	SET_NETDEV_DEV(dev, &pdev->dev);

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

 	printk(KERN_DEBUG PFX "Detected Orinoco/Prism2 TMD device "
 	       "at %s irq:%d, io addr:0x%lx\n", pci_name(pdev), pdev->irq,
 	       dev->base_addr);

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

 	err = orinoco_tmd_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);

 	return 0;

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

  fail_irq:
 	pci_set_drvdata(pdev, NULL);
 	free_orinocodev(dev);

  fail_alloc:
 	pci_iounmap(pdev, mem);

  fail_iomap:
 	pci_release_regions(pdev);

  fail_resources:
 	pci_disable_device(pdev);

 	return err;
 }

 static void __devexit orinoco_tmd_remove_one(struct pci_dev *pdev)
 {
 	struct net_device *dev = pci_get_drvdata(pdev);
 	struct orinoco_private *priv = dev->priv;

 	BUG_ON(! dev);

 	unregister_netdev(dev);
 	free_irq(dev->irq, dev);
 	pci_set_drvdata(pdev, NULL);
 	free_orinocodev(dev);
 	pci_iounmap(pdev, priv->hw.iobase);
 	pci_release_regions(pdev);
 	pci_disable_device(pdev);
 }


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

 MODULE_DEVICE_TABLE(pci, orinoco_tmd_pci_id_table);

 static struct pci_driver orinoco_tmd_driver = {
 	.name		= DRIVER_NAME,
 	.id_table	= orinoco_tmd_pci_id_table,
 	.probe		= orinoco_tmd_init_one,
 	.remove		= __devexit_p(orinoco_tmd_remove_one),
 };

 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_module_init(&orinoco_tmd_driver);
 }

 static void __exit orinoco_tmd_exit(void)
 {
 	pci_unregister_driver(&orinoco_tmd_driver);
 	ssleep(1);
 }

 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.

	* Caution: this is experimental and probably buggy. For success and
	* failure reports for different cards and adaptors, see
	* orinoco_tmd_pci_id_table near the end of the file. If you have a
	* card we don't have the PCI id for, and looks like it should work,
	* drop me mail with the id and "it works"/"it doesn't work".
	*
	* Note: if everything gets detected fine but it doesn't actually send
	* or receive packets, your first port of call should probably be to
	* try newer firmware in the card. Especially if you're doing Ad-Hoc
	* modes
	*
	* The actual driving is done by orinoco.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 no
	* memory space, i.e. no access to the CIS. Compared to the PLX chip,
	* the io range functionalities are exchanged.
	*
	* Pheecom sells cards with the TMD chip as "ASIC version"
	*/

	#define DRIVER_NAME "orinoco_tmd"
	#define PFX DRIVER_NAME ": "

	#include <linux/config.h>
	#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"

	#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 */

	/* Orinoco TMD specific data */
	struct orinoco_tmd_card {
	u32 tmd_io;
	};


	/*
	* Do a soft reset of the card using the Configuration Option Register
	*/
	static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
	{
	hermes_t *hw = &priv->hw;
	struct orinoco_tmd_card *card = priv->card;
	u32 addr = card->tmd_io;
	unsigned long timeout;
	u16 reg;

	outb(COR_VALUE \| COR_RESET, addr);
	mdelay(1);

	outb(COR_VALUE, addr);
	mdelay(1);

	/* Just in case, wait more until the card is no longer busy */
	timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
	reg = hermes_read_regn(hw, CMD);
	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
	mdelay(1);
	reg = hermes_read_regn(hw, CMD);
	}

	/* Did we timeout ? */
	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 = 0;
	struct orinoco_private *priv = NULL;
	struct orinoco_tmd_card *card;
	struct net_device *dev = NULL;
	void __iomem *mem;

	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 != 0) {
	printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
	goto fail_resources;
	}

	mem = pci_iomap(pdev, 2, 0);
	if (! mem) {
	err = -ENOMEM;
	goto fail_iomap;
	}

	/* Allocate network device */
	dev = alloc_orinocodev(sizeof(*card), orinoco_tmd_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->tmd_io = pci_resource_start(pdev, 1);
	dev->base_addr = pci_resource_start(pdev, 2);
	SET_MODULE_OWNER(dev);
	SET_NETDEV_DEV(dev, &pdev->dev);

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

	printk(KERN_DEBUG PFX "Detected Orinoco/Prism2 TMD device "
	"at %s irq:%d, io addr:0x%lx\n", pci_name(pdev), pdev->irq,
	dev->base_addr);

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

	err = orinoco_tmd_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);

	return 0;

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

	fail_irq:
	pci_set_drvdata(pdev, NULL);
	free_orinocodev(dev);

	fail_alloc:
	pci_iounmap(pdev, mem);

	fail_iomap:
	pci_release_regions(pdev);

	fail_resources:
	pci_disable_device(pdev);

	return err;
	}

	static void __devexit orinoco_tmd_remove_one(struct pci_dev *pdev)
	{
	struct net_device *dev = pci_get_drvdata(pdev);
	struct orinoco_private *priv = dev->priv;

	BUG_ON(! dev);

	unregister_netdev(dev);
	free_irq(dev->irq, dev);
	pci_set_drvdata(pdev, NULL);
	free_orinocodev(dev);
	pci_iounmap(pdev, priv->hw.iobase);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	}


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

	MODULE_DEVICE_TABLE(pci, orinoco_tmd_pci_id_table);

	static struct pci_driver orinoco_tmd_driver = {
	.name = DRIVER_NAME,
	.id_table = orinoco_tmd_pci_id_table,
	.probe = orinoco_tmd_init_one,
	.remove = __devexit_p(orinoco_tmd_remove_one),
	};

	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_module_init(&orinoco_tmd_driver);
	}

	static void __exit orinoco_tmd_exit(void)
	{
	pci_unregister_driver(&orinoco_tmd_driver);
	ssleep(1);
	}

	module_init(orinoco_tmd_init);
	module_exit(orinoco_tmd_exit);

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