drivers/net/wireless/orinoco_plx.c - kernel/msm-4.9 - Gitiles

 /* orinoco_plx.c
  *
  * Driver for Prism II devices which would usually be driven by orinoco_cs,
  * but are connected to the PCI bus by a PLX9052.
  *
  * Current maintainers (as of 29 September 2003) are:
  * 	Pavel Roskin <proski AT gnu.org>
  * and	David Gibson <hermes AT gibson.dropbear.id.au>
  *
  * (C) Copyright David Gibson, IBM Corp. 2001-2003.
  * 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_plx_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.  The explanation below is courtesy of Ryan Niemi
  * on the linux-wlan-ng list at
  * http://archives.neohapsis.com/archives/dev/linux-wlan/2001-q1/0026.html
  *
  * The PLX9052-based cards (WL11000 and several others) are a
  * different beast than the usual PCMCIA-based PRISM2 configuration
  * expected by wlan-ng.  Here's the general details on how the WL11000
  * PCI adapter works:
  *
  * - Two PCI I/O address spaces, one 0x80 long which contains the
  * PLX9052 registers, and one that's 0x40 long mapped to the PCMCIA
  * slot I/O address space.
  *
  * - One PCI memory address space, mapped to the PCMCIA memory space
  * (containing the CIS).
  *
  * After identifying the I/O and memory space, you can read through
  * the memory space to confirm the CIS's device ID or manufacturer ID
  * to make sure it's the expected card.  qKeep in mind that the PCMCIA
  * spec specifies the CIS as the lower 8 bits of each word read from
  * the CIS, so to read the bytes of the CIS, read every other byte
  * (0,2,4,...). Passing that test, you need to enable the I/O address
  * space on the PCMCIA card via the PCMCIA COR register. This is the
  * first byte following the CIS. In my case (which may not have any
  * relation to what's on the PRISM2 cards), COR was at offset 0x800
  * within the PCI memory space. Write 0x41 to the COR register to
  * enable I/O mode and to select level triggered interrupts. To
  * confirm you actually succeeded, read the COR register back and make
  * sure it actually got set to 0x41, incase you have an unexpected
  * card inserted.
  *
  * Following that, you can treat the second PCI I/O address space (the
  * one that's not 0x80 in length) as the PCMCIA I/O space.
  *
  * Note that in the Eumitcom's source for their drivers, they register
  * the interrupt as edge triggered when registering it with the
  * Windows kernel. I don't recall how to register edge triggered on
  * Linux (if it can be done at all). But in some experimentation, I
  * don't see much operational difference between using either
  * interrupt mode. Don't mess with the interrupt mode in the COR
  * register though, as the PLX9052 wants level triggers with the way
  * the serial EEPROM configures it on the WL11000.
  *
  * There's some other little quirks related to timing that I bumped
  * into, but I don't recall right now. Also, there's two variants of
  * the WL11000 I've seen, revision A1 and T2. These seem to differ
  * slightly in the timings configured in the wait-state generator in
  * the PLX9052. There have also been some comments from Eumitcom that
  * cards shouldn't be hot swapped, apparently due to risk of cooking
  * the PLX9052. I'm unsure why they believe this, as I can't see
  * anything in the design that would really cause a problem, except
  * for crashing drivers not written to expect it. And having developed
  * drivers for the WL11000, I'd say it's quite tricky to write code
  * that will successfully deal with a hot unplug. Very odd things
  * happen on the I/O side of things. But anyway, be warned. Despite
  * that, I've hot-swapped a number of times during debugging and
  * driver development for various reasons (stuck WAIT# line after the
  * radio card's firmware locks up).
  *
  * Hope this is enough info for someone to add PLX9052 support to the
  * wlan-ng card. In the case of the WL11000, the PCI ID's are
  * 0x1639/0x0200, with matching subsystem ID's. Other PLX9052-based
  * manufacturers other than Eumitcom (or on cards other than the
  * WL11000) may have different PCI ID's.
  *
  * If anyone needs any more specific info, let me know. I haven't had
  * time to implement support myself yet, and with the way things are
  * going, might not have time for a while..
  */

 #define DRIVER_NAME "orinoco_plx"
 #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_OFFSET	(0x3e0)	/* COR attribute offset of Prism2 PC card */
 #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 PLX_RESET_TIME	(500)	/* milliseconds */

 #define PLX_INTCSR		0x4c /* Interrupt Control & Status Register */
 #define PLX_INTCSR_INTEN	(1<<6) /* Interrupt Enable bit */

 static const u8 cis_magic[] = {
 	0x01, 0x03, 0x00, 0x00, 0xff, 0x17, 0x04, 0x67
 };

 /* Orinoco PLX specific data */
 struct orinoco_plx_card {
 	void __iomem *attr_mem;
 };

 /*
  * Do a soft reset of the card using the Configuration Option Register
  */
 static int orinoco_plx_cor_reset(struct orinoco_private *priv)
 {
 	hermes_t *hw = &priv->hw;
 	struct orinoco_plx_card *card = priv->card;
 	u8 __iomem *attr_mem = card->attr_mem;
 	unsigned long timeout;
 	u16 reg;

 	writeb(COR_VALUE | COR_RESET, attr_mem + COR_OFFSET);
 	mdelay(1);

 	writeb(COR_VALUE, attr_mem + COR_OFFSET);
 	mdelay(1);

 	/* Just in case, wait more until the card is no longer busy */
 	timeout = jiffies + (PLX_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_plx_init_one(struct pci_dev *pdev,
 				const struct pci_device_id *ent)
 {
 	int err = 0;
 	u8 __iomem *attr_mem = NULL;
 	u32 csr_reg, plx_addr;
 	struct orinoco_private *priv = NULL;
 	struct orinoco_plx_card *card;
 	unsigned long pccard_ioaddr = 0;
 	unsigned long pccard_iolen = 0;
 	struct net_device *dev = NULL;
 	void __iomem *mem;
 	int i;

 	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;
 	}

 	/* Resource 1 is mapped to PLX-specific registers */
 	plx_addr = pci_resource_start(pdev, 1);

 	/* Resource 2 is mapped to the PCMCIA attribute memory */
 	attr_mem = ioremap(pci_resource_start(pdev, 2),
 			   pci_resource_len(pdev, 2));
 	if (!attr_mem) {
 		printk(KERN_ERR PFX "Cannot remap PCMCIA space\n");
 		goto fail_map_attr;
 	}

 	/* Resource 3 is mapped to the PCMCIA I/O address space */
 	pccard_ioaddr = pci_resource_start(pdev, 3);
 	pccard_iolen = pci_resource_len(pdev, 3);

 	mem = pci_iomap(pdev, 3, 0);
 	if (!mem) {
 		err = -ENOMEM;
 		goto fail_map_io;
 	}

 	/* Allocate network device */
 	dev = alloc_orinocodev(sizeof(*card), orinoco_plx_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->attr_mem = attr_mem;
 	dev->base_addr = pccard_ioaddr;
 	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 PLX device "
 	       "at %s irq:%d, io addr:0x%lx\n", pci_name(pdev), pdev->irq,
 	       pccard_ioaddr);

 	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;

 	/* bjoern: We need to tell the card to enable interrupts, in
 	   case the serial eprom didn't do this already.  See the
 	   PLX9052 data book, p8-1 and 8-24 for reference. */
 	csr_reg = inl(plx_addr + PLX_INTCSR);
 	if (!(csr_reg & PLX_INTCSR_INTEN)) {
 		csr_reg |= PLX_INTCSR_INTEN;
 		outl(csr_reg, plx_addr + PLX_INTCSR);
 		csr_reg = inl(plx_addr + PLX_INTCSR);
 		if (!(csr_reg & PLX_INTCSR_INTEN)) {
 			printk(KERN_ERR PFX "Cannot enable interrupts\n");
 			goto fail;
 		}
 	}

 	err = orinoco_plx_cor_reset(priv);
 	if (err) {
 		printk(KERN_ERR PFX "Initial reset failed\n");
 		goto fail;
 	}

 	printk(KERN_DEBUG PFX "CIS: ");
 	for (i = 0; i < 16; i++) {
 		printk("%02X:", readb(attr_mem + 2*i));
 	}
 	printk("\n");

 	/* Verify whether a supported PC card is present */
 	/* FIXME: we probably need to be smarted about this */
 	for (i = 0; i < sizeof(cis_magic); i++) {
 		if (cis_magic[i] != readb(attr_mem +2*i)) {
 			printk(KERN_ERR PFX "The CIS value of Prism2 PC "
 			       "card is unexpected\n");
 			err = -EIO;
 			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_map_io:
 	iounmap(attr_mem);

  fail_map_attr:
 	pci_release_regions(pdev);

  fail_resources:
 	pci_disable_device(pdev);

 	return err;
 }

 static void __devexit orinoco_plx_remove_one(struct pci_dev *pdev)
 {
 	struct net_device *dev = pci_get_drvdata(pdev);
 	struct orinoco_private *priv = netdev_priv(dev);
 	struct orinoco_plx_card *card = priv->card;
 	u8 __iomem *attr_mem = card->attr_mem;

 	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);
 	iounmap(attr_mem);
 	pci_release_regions(pdev);
 	pci_disable_device(pdev);
 }


 static struct pci_device_id orinoco_plx_pci_id_table[] = {
 	{0x111a, 0x1023, PCI_ANY_ID, PCI_ANY_ID,},	/* Siemens SpeedStream SS1023 */
 	{0x1385, 0x4100, PCI_ANY_ID, PCI_ANY_ID,},	/* Netgear MA301 */
 	{0x15e8, 0x0130, PCI_ANY_ID, PCI_ANY_ID,},	/* Correga  - does this work? */
 	{0x1638, 0x1100, PCI_ANY_ID, PCI_ANY_ID,},	/* SMC EZConnect SMC2602W,
 							   Eumitcom PCI WL11000,
 							   Addtron AWA-100 */
 	{0x16ab, 0x1100, PCI_ANY_ID, PCI_ANY_ID,},	/* Global Sun Tech GL24110P */
 	{0x16ab, 0x1101, PCI_ANY_ID, PCI_ANY_ID,},	/* Reported working, but unknown */
 	{0x16ab, 0x1102, PCI_ANY_ID, PCI_ANY_ID,},	/* Linksys WDT11 */
 	{0x16ec, 0x3685, PCI_ANY_ID, PCI_ANY_ID,},	/* USR 2415 */
 	{0xec80, 0xec00, PCI_ANY_ID, PCI_ANY_ID,},	/* Belkin F5D6000 tested by
 							   Brendan W. McAdams <rit AT jacked-in.org> */
 	{0x10b7, 0x7770, PCI_ANY_ID, PCI_ANY_ID,},	/* 3Com AirConnect PCI tested by
 							   Damien Persohn <damien AT persohn.net> */
 	{0,},
 };

 MODULE_DEVICE_TABLE(pci, orinoco_plx_pci_id_table);

 static struct pci_driver orinoco_plx_driver = {
 	.name		= DRIVER_NAME,
 	.id_table	= orinoco_plx_pci_id_table,
 	.probe		= orinoco_plx_init_one,
 	.remove		= __devexit_p(orinoco_plx_remove_one),
 };

 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
 	" (Pavel Roskin <proski@gnu.org>,"
 	" David Gibson <hermes@gibson.dropbear.id.au>,"
 	" Daniel Barlow <dan@telent.net>)";
 MODULE_AUTHOR("Daniel Barlow <dan@telent.net>");
 MODULE_DESCRIPTION("Driver for wireless LAN cards using the PLX9052 PCI bridge");
 MODULE_LICENSE("Dual MPL/GPL");

 static int __init orinoco_plx_init(void)
 {
 	printk(KERN_DEBUG "%s\n", version);
 	return pci_module_init(&orinoco_plx_driver);
 }

 static void __exit orinoco_plx_exit(void)
 {
 	pci_unregister_driver(&orinoco_plx_driver);
 	ssleep(1);
 }

 module_init(orinoco_plx_init);
 module_exit(orinoco_plx_exit);

 /*
  * Local variables:
  *  c-indent-level: 8
  *  c-basic-offset: 8
  *  tab-width: 8
  * End:
  */
	/* orinoco_plx.c
	*
	* Driver for Prism II devices which would usually be driven by orinoco_cs,
	* but are connected to the PCI bus by a PLX9052.
	*
	* Current maintainers (as of 29 September 2003) are:
	* Pavel Roskin <proski AT gnu.org>
	* and David Gibson <hermes AT gibson.dropbear.id.au>
	*
	* (C) Copyright David Gibson, IBM Corp. 2001-2003.
	* 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_plx_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. The explanation below is courtesy of Ryan Niemi
	* on the linux-wlan-ng list at
	* http://archives.neohapsis.com/archives/dev/linux-wlan/2001-q1/0026.html
	*
	* The PLX9052-based cards (WL11000 and several others) are a
	* different beast than the usual PCMCIA-based PRISM2 configuration
	* expected by wlan-ng. Here's the general details on how the WL11000
	* PCI adapter works:
	*
	* - Two PCI I/O address spaces, one 0x80 long which contains the
	* PLX9052 registers, and one that's 0x40 long mapped to the PCMCIA
	* slot I/O address space.
	*
	* - One PCI memory address space, mapped to the PCMCIA memory space
	* (containing the CIS).
	*
	* After identifying the I/O and memory space, you can read through
	* the memory space to confirm the CIS's device ID or manufacturer ID
	* to make sure it's the expected card. qKeep in mind that the PCMCIA
	* spec specifies the CIS as the lower 8 bits of each word read from
	* the CIS, so to read the bytes of the CIS, read every other byte
	* (0,2,4,...). Passing that test, you need to enable the I/O address
	* space on the PCMCIA card via the PCMCIA COR register. This is the
	* first byte following the CIS. In my case (which may not have any
	* relation to what's on the PRISM2 cards), COR was at offset 0x800
	* within the PCI memory space. Write 0x41 to the COR register to
	* enable I/O mode and to select level triggered interrupts. To
	* confirm you actually succeeded, read the COR register back and make
	* sure it actually got set to 0x41, incase you have an unexpected
	* card inserted.
	*
	* Following that, you can treat the second PCI I/O address space (the
	* one that's not 0x80 in length) as the PCMCIA I/O space.
	*
	* Note that in the Eumitcom's source for their drivers, they register
	* the interrupt as edge triggered when registering it with the
	* Windows kernel. I don't recall how to register edge triggered on
	* Linux (if it can be done at all). But in some experimentation, I
	* don't see much operational difference between using either
	* interrupt mode. Don't mess with the interrupt mode in the COR
	* register though, as the PLX9052 wants level triggers with the way
	* the serial EEPROM configures it on the WL11000.
	*
	* There's some other little quirks related to timing that I bumped
	* into, but I don't recall right now. Also, there's two variants of
	* the WL11000 I've seen, revision A1 and T2. These seem to differ
	* slightly in the timings configured in the wait-state generator in
	* the PLX9052. There have also been some comments from Eumitcom that
	* cards shouldn't be hot swapped, apparently due to risk of cooking
	* the PLX9052. I'm unsure why they believe this, as I can't see
	* anything in the design that would really cause a problem, except
	* for crashing drivers not written to expect it. And having developed
	* drivers for the WL11000, I'd say it's quite tricky to write code
	* that will successfully deal with a hot unplug. Very odd things
	* happen on the I/O side of things. But anyway, be warned. Despite
	* that, I've hot-swapped a number of times during debugging and
	* driver development for various reasons (stuck WAIT# line after the
	* radio card's firmware locks up).
	*
	* Hope this is enough info for someone to add PLX9052 support to the
	* wlan-ng card. In the case of the WL11000, the PCI ID's are
	* 0x1639/0x0200, with matching subsystem ID's. Other PLX9052-based
	* manufacturers other than Eumitcom (or on cards other than the
	* WL11000) may have different PCI ID's.
	*
	* If anyone needs any more specific info, let me know. I haven't had
	* time to implement support myself yet, and with the way things are
	* going, might not have time for a while..
	*/

	#define DRIVER_NAME "orinoco_plx"
	#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_OFFSET (0x3e0) /* COR attribute offset of Prism2 PC card */
	#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 PLX_RESET_TIME (500) /* milliseconds */

	#define PLX_INTCSR 0x4c /* Interrupt Control & Status Register */
	#define PLX_INTCSR_INTEN (1<<6) /* Interrupt Enable bit */

	static const u8 cis_magic[] = {
	0x01, 0x03, 0x00, 0x00, 0xff, 0x17, 0x04, 0x67
	};

	/* Orinoco PLX specific data */
	struct orinoco_plx_card {
	void __iomem *attr_mem;
	};

	/*
	* Do a soft reset of the card using the Configuration Option Register
	*/
	static int orinoco_plx_cor_reset(struct orinoco_private *priv)
	{
	hermes_t *hw = &priv->hw;
	struct orinoco_plx_card *card = priv->card;
	u8 __iomem *attr_mem = card->attr_mem;
	unsigned long timeout;
	u16 reg;

	writeb(COR_VALUE \| COR_RESET, attr_mem + COR_OFFSET);
	mdelay(1);

	writeb(COR_VALUE, attr_mem + COR_OFFSET);
	mdelay(1);

	/* Just in case, wait more until the card is no longer busy */
	timeout = jiffies + (PLX_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_plx_init_one(struct pci_dev *pdev,
	const struct pci_device_id *ent)
	{
	int err = 0;
	u8 __iomem *attr_mem = NULL;
	u32 csr_reg, plx_addr;
	struct orinoco_private *priv = NULL;
	struct orinoco_plx_card *card;
	unsigned long pccard_ioaddr = 0;
	unsigned long pccard_iolen = 0;
	struct net_device *dev = NULL;
	void __iomem *mem;
	int i;

	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;
	}

	/* Resource 1 is mapped to PLX-specific registers */
	plx_addr = pci_resource_start(pdev, 1);

	/* Resource 2 is mapped to the PCMCIA attribute memory */
	attr_mem = ioremap(pci_resource_start(pdev, 2),
	pci_resource_len(pdev, 2));
	if (!attr_mem) {
	printk(KERN_ERR PFX "Cannot remap PCMCIA space\n");
	goto fail_map_attr;
	}

	/* Resource 3 is mapped to the PCMCIA I/O address space */
	pccard_ioaddr = pci_resource_start(pdev, 3);
	pccard_iolen = pci_resource_len(pdev, 3);

	mem = pci_iomap(pdev, 3, 0);
	if (!mem) {
	err = -ENOMEM;
	goto fail_map_io;
	}

	/* Allocate network device */
	dev = alloc_orinocodev(sizeof(*card), orinoco_plx_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->attr_mem = attr_mem;
	dev->base_addr = pccard_ioaddr;
	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 PLX device "
	"at %s irq:%d, io addr:0x%lx\n", pci_name(pdev), pdev->irq,
	pccard_ioaddr);

	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;

	/* bjoern: We need to tell the card to enable interrupts, in
	case the serial eprom didn't do this already. See the
	PLX9052 data book, p8-1 and 8-24 for reference. */
	csr_reg = inl(plx_addr + PLX_INTCSR);
	if (!(csr_reg & PLX_INTCSR_INTEN)) {
	csr_reg \|= PLX_INTCSR_INTEN;
	outl(csr_reg, plx_addr + PLX_INTCSR);
	csr_reg = inl(plx_addr + PLX_INTCSR);
	if (!(csr_reg & PLX_INTCSR_INTEN)) {
	printk(KERN_ERR PFX "Cannot enable interrupts\n");
	goto fail;
	}
	}

	err = orinoco_plx_cor_reset(priv);
	if (err) {
	printk(KERN_ERR PFX "Initial reset failed\n");
	goto fail;
	}

	printk(KERN_DEBUG PFX "CIS: ");
	for (i = 0; i < 16; i++) {
	printk("%02X:", readb(attr_mem + 2*i));
	}
	printk("\n");

	/* Verify whether a supported PC card is present */
	/* FIXME: we probably need to be smarted about this */
	for (i = 0; i < sizeof(cis_magic); i++) {
	if (cis_magic[i] != readb(attr_mem +2*i)) {
	printk(KERN_ERR PFX "The CIS value of Prism2 PC "
	"card is unexpected\n");
	err = -EIO;
	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_map_io:
	iounmap(attr_mem);

	fail_map_attr:
	pci_release_regions(pdev);

	fail_resources:
	pci_disable_device(pdev);

	return err;
	}

	static void __devexit orinoco_plx_remove_one(struct pci_dev *pdev)
	{
	struct net_device *dev = pci_get_drvdata(pdev);
	struct orinoco_private *priv = netdev_priv(dev);
	struct orinoco_plx_card *card = priv->card;
	u8 __iomem *attr_mem = card->attr_mem;

	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);
	iounmap(attr_mem);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	}


	static struct pci_device_id orinoco_plx_pci_id_table[] = {
	{0x111a, 0x1023, PCI_ANY_ID, PCI_ANY_ID,}, /* Siemens SpeedStream SS1023 */
	{0x1385, 0x4100, PCI_ANY_ID, PCI_ANY_ID,}, /* Netgear MA301 */
	{0x15e8, 0x0130, PCI_ANY_ID, PCI_ANY_ID,}, /* Correga - does this work? */
	{0x1638, 0x1100, PCI_ANY_ID, PCI_ANY_ID,}, /* SMC EZConnect SMC2602W,
	Eumitcom PCI WL11000,
	Addtron AWA-100 */
	{0x16ab, 0x1100, PCI_ANY_ID, PCI_ANY_ID,}, /* Global Sun Tech GL24110P */
	{0x16ab, 0x1101, PCI_ANY_ID, PCI_ANY_ID,}, /* Reported working, but unknown */
	{0x16ab, 0x1102, PCI_ANY_ID, PCI_ANY_ID,}, /* Linksys WDT11 */
	{0x16ec, 0x3685, PCI_ANY_ID, PCI_ANY_ID,}, /* USR 2415 */
	{0xec80, 0xec00, PCI_ANY_ID, PCI_ANY_ID,}, /* Belkin F5D6000 tested by
	Brendan W. McAdams <rit AT jacked-in.org> */
	{0x10b7, 0x7770, PCI_ANY_ID, PCI_ANY_ID,}, /* 3Com AirConnect PCI tested by
	Damien Persohn <damien AT persohn.net> */
	{0,},
	};

	MODULE_DEVICE_TABLE(pci, orinoco_plx_pci_id_table);

	static struct pci_driver orinoco_plx_driver = {
	.name = DRIVER_NAME,
	.id_table = orinoco_plx_pci_id_table,
	.probe = orinoco_plx_init_one,
	.remove = __devexit_p(orinoco_plx_remove_one),
	};

	static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
	" (Pavel Roskin <proski@gnu.org>,"
	" David Gibson <hermes@gibson.dropbear.id.au>,"
	" Daniel Barlow <dan@telent.net>)";
	MODULE_AUTHOR("Daniel Barlow <dan@telent.net>");
	MODULE_DESCRIPTION("Driver for wireless LAN cards using the PLX9052 PCI bridge");
	MODULE_LICENSE("Dual MPL/GPL");

	static int __init orinoco_plx_init(void)
	{
	printk(KERN_DEBUG "%s\n", version);
	return pci_module_init(&orinoco_plx_driver);
	}

	static void __exit orinoco_plx_exit(void)
	{
	pci_unregister_driver(&orinoco_plx_driver);
	ssleep(1);
	}

	module_init(orinoco_plx_init);
	module_exit(orinoco_plx_exit);

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