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Pavel Roskin
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Jeff Garzik
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Sep 5, 2005
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/* 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 Nortel PCI-PCMCIA-Adapter. | ||
* | ||
* 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. | ||
*/ | ||
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#define DRIVER_NAME "orinoco_nortel" | ||
#define PFX DRIVER_NAME ": " | ||
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#include <linux/config.h> | ||
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#include <linux/module.h> | ||
#include <linux/kernel.h> | ||
#include <linux/init.h> | ||
#include <linux/sched.h> | ||
#include <linux/ptrace.h> | ||
#include <linux/slab.h> | ||
#include <linux/string.h> | ||
#include <linux/timer.h> | ||
#include <linux/ioport.h> | ||
#include <asm/uaccess.h> | ||
#include <asm/io.h> | ||
#include <asm/system.h> | ||
#include <linux/netdevice.h> | ||
#include <linux/if_arp.h> | ||
#include <linux/etherdevice.h> | ||
#include <linux/list.h> | ||
#include <linux/pci.h> | ||
#include <linux/fcntl.h> | ||
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#include <pcmcia/cisreg.h> | ||
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#include "hermes.h" | ||
#include "orinoco.h" | ||
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#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 */ | ||
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/* Nortel specific data */ | ||
struct nortel_pci_card { | ||
unsigned long iobase1; | ||
unsigned long iobase2; | ||
}; | ||
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/* | ||
* Do a soft reset of the PCI 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 nortel_pci_cor_reset(struct orinoco_private *priv) | ||
{ | ||
struct nortel_pci_card *card = priv->card; | ||
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/* Assert the reset until the card notice */ | ||
outw_p(8, card->iobase1 + 2); | ||
inw(card->iobase2 + COR_OFFSET); | ||
outw_p(0x80, card->iobase2 + COR_OFFSET); | ||
mdelay(1); | ||
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/* Give time for the card to recover from this hard effort */ | ||
outw_p(0, card->iobase2 + COR_OFFSET); | ||
outw_p(0, card->iobase2 + COR_OFFSET); | ||
mdelay(1); | ||
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/* set COR as usual */ | ||
outw_p(COR_VALUE, card->iobase2 + COR_OFFSET); | ||
outw_p(COR_VALUE, card->iobase2 + COR_OFFSET); | ||
mdelay(1); | ||
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outw_p(0x228, card->iobase1 + 2); | ||
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return 0; | ||
} | ||
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int nortel_pci_hw_init(struct nortel_pci_card *card) | ||
{ | ||
int i; | ||
u32 reg; | ||
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/* setup bridge */ | ||
if (inw(card->iobase1) & 1) { | ||
printk(KERN_ERR PFX "brg1 answer1 wrong\n"); | ||
return -EBUSY; | ||
} | ||
outw_p(0x118, card->iobase1 + 2); | ||
outw_p(0x108, card->iobase1 + 2); | ||
mdelay(30); | ||
outw_p(0x8, card->iobase1 + 2); | ||
for (i = 0; i < 30; i++) { | ||
mdelay(30); | ||
if (inw(card->iobase1) & 0x10) { | ||
break; | ||
} | ||
} | ||
if (i == 30) { | ||
printk(KERN_ERR PFX "brg1 timed out\n"); | ||
return -EBUSY; | ||
} | ||
if (inw(card->iobase2 + 0xe0) & 1) { | ||
printk(KERN_ERR PFX "brg2 answer1 wrong\n"); | ||
return -EBUSY; | ||
} | ||
if (inw(card->iobase2 + 0xe2) & 1) { | ||
printk(KERN_ERR PFX "brg2 answer2 wrong\n"); | ||
return -EBUSY; | ||
} | ||
if (inw(card->iobase2 + 0xe4) & 1) { | ||
printk(KERN_ERR PFX "brg2 answer3 wrong\n"); | ||
return -EBUSY; | ||
} | ||
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/* set the PCMCIA COR-Register */ | ||
outw_p(COR_VALUE, card->iobase2 + COR_OFFSET); | ||
mdelay(1); | ||
reg = inw(card->iobase2 + COR_OFFSET); | ||
if (reg != COR_VALUE) { | ||
printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n", | ||
reg); | ||
return -EBUSY; | ||
} | ||
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/* set leds */ | ||
outw_p(1, card->iobase1 + 10); | ||
return 0; | ||
} | ||
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static int nortel_pci_init_one(struct pci_dev *pdev, | ||
const struct pci_device_id *ent) | ||
{ | ||
int err; | ||
struct orinoco_private *priv; | ||
struct nortel_pci_card *card; | ||
struct net_device *dev; | ||
void __iomem *iomem; | ||
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err = pci_enable_device(pdev); | ||
if (err) { | ||
printk(KERN_ERR PFX "Cannot enable PCI device\n"); | ||
return err; | ||
} | ||
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err = pci_request_regions(pdev, DRIVER_NAME); | ||
if (err != 0) { | ||
printk(KERN_ERR PFX "Cannot obtain PCI resources\n"); | ||
goto fail_resources; | ||
} | ||
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iomem = pci_iomap(pdev, 3, 0); | ||
if (!iomem) { | ||
err = -ENOMEM; | ||
goto fail_map_io; | ||
} | ||
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/* Allocate network device */ | ||
dev = alloc_orinocodev(sizeof(*card), nortel_pci_cor_reset); | ||
if (!dev) { | ||
printk(KERN_ERR PFX "Cannot allocate network device\n"); | ||
err = -ENOMEM; | ||
goto fail_alloc; | ||
} | ||
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priv = netdev_priv(dev); | ||
card = priv->card; | ||
card->iobase1 = pci_resource_start(pdev, 0); | ||
card->iobase2 = pci_resource_start(pdev, 1); | ||
dev->base_addr = pci_resource_start(pdev, 2); | ||
SET_MODULE_OWNER(dev); | ||
SET_NETDEV_DEV(dev, &pdev->dev); | ||
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hermes_struct_init(&priv->hw, iomem, HERMES_16BIT_REGSPACING); | ||
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printk(KERN_DEBUG PFX "Detected Nortel PCI device at %s irq:%d, " | ||
"io addr:0x%lx\n", pci_name(pdev), pdev->irq, dev->base_addr); | ||
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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; | ||
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err = nortel_pci_hw_init(card); | ||
if (err) { | ||
printk(KERN_ERR PFX "Hardware initialization failed\n"); | ||
goto fail; | ||
} | ||
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err = nortel_pci_cor_reset(priv); | ||
if (err) { | ||
printk(KERN_ERR PFX "Initial reset failed\n"); | ||
goto fail; | ||
} | ||
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err = register_netdev(dev); | ||
if (err) { | ||
printk(KERN_ERR PFX "Cannot register network device\n"); | ||
goto fail; | ||
} | ||
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pci_set_drvdata(pdev, dev); | ||
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return 0; | ||
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fail: | ||
free_irq(pdev->irq, dev); | ||
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fail_irq: | ||
pci_set_drvdata(pdev, NULL); | ||
free_orinocodev(dev); | ||
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fail_alloc: | ||
pci_iounmap(pdev, iomem); | ||
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fail_map_io: | ||
pci_release_regions(pdev); | ||
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fail_resources: | ||
pci_disable_device(pdev); | ||
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return err; | ||
} | ||
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static void __devexit nortel_pci_remove_one(struct pci_dev *pdev) | ||
{ | ||
struct net_device *dev = pci_get_drvdata(pdev); | ||
struct orinoco_private *priv = netdev_priv(dev); | ||
struct nortel_pci_card *card = priv->card; | ||
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/* clear leds */ | ||
outw_p(0, card->iobase1 + 10); | ||
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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); | ||
} | ||
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static struct pci_device_id nortel_pci_id_table[] = { | ||
/* Nortel emobility PCI */ | ||
{0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,}, | ||
{0,}, | ||
}; | ||
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MODULE_DEVICE_TABLE(pci, nortel_pci_id_table); | ||
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static struct pci_driver nortel_pci_driver = { | ||
.name = DRIVER_NAME, | ||
.id_table = nortel_pci_id_table, | ||
.probe = nortel_pci_init_one, | ||
.remove = __devexit_p(nortel_pci_remove_one), | ||
}; | ||
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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"); | ||
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static int __init nortel_pci_init(void) | ||
{ | ||
printk(KERN_DEBUG "%s\n", version); | ||
return pci_module_init(&nortel_pci_driver); | ||
} | ||
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static void __exit nortel_pci_exit(void) | ||
{ | ||
pci_unregister_driver(&nortel_pci_driver); | ||
ssleep(1); | ||
} | ||
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module_init(nortel_pci_init); | ||
module_exit(nortel_pci_exit); | ||
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/* | ||
* Local variables: | ||
* c-indent-level: 8 | ||
* c-basic-offset: 8 | ||
* tab-width: 8 | ||
* End: | ||
*/ |