diff options
Diffstat (limited to 'drivers/net/wireless/orinoco_nortel.c')
| -rw-r--r-- | drivers/net/wireless/orinoco_nortel.c | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/drivers/net/wireless/orinoco_nortel.c b/drivers/net/wireless/orinoco_nortel.c new file mode 100644 index 000000000000..86fa58e5cfac --- /dev/null +++ b/drivers/net/wireless/orinoco_nortel.c @@ -0,0 +1,324 @@ +/* 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. + */ + +#define DRIVER_NAME "orinoco_nortel" +#define PFX DRIVER_NAME ": " + +#include <linux/config.h> + +#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> + +#include <pcmcia/cisreg.h> + +#include "hermes.h" +#include "orinoco.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 */ + + +/* Nortel specific data */ +struct nortel_pci_card { + unsigned long iobase1; + unsigned long iobase2; +}; + +/* + * 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; + + /* 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); + + /* 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); + + /* set COR as usual */ + outw_p(COR_VALUE, card->iobase2 + COR_OFFSET); + outw_p(COR_VALUE, card->iobase2 + COR_OFFSET); + mdelay(1); + + outw_p(0x228, card->iobase1 + 2); + + return 0; +} + +int nortel_pci_hw_init(struct nortel_pci_card *card) +{ + int i; + u32 reg; + + /* 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; + } + + /* 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; + } + + /* set leds */ + outw_p(1, card->iobase1 + 10); + return 0; +} + +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; + + 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; + } + + iomem = pci_iomap(pdev, 3, 0); + if (!iomem) { + err = -ENOMEM; + goto fail_map_io; + } + + /* 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; + } + + 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); + + hermes_struct_init(&priv->hw, iomem, HERMES_16BIT_REGSPACING); + + 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); + + 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 = nortel_pci_hw_init(card); + if (err) { + printk(KERN_ERR PFX "Hardware initialization failed\n"); + goto fail; + } + + err = nortel_pci_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, iomem); + + fail_map_io: + pci_release_regions(pdev); + + fail_resources: + pci_disable_device(pdev); + + return err; +} + +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; + + /* clear leds */ + outw_p(0, card->iobase1 + 10); + + 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 nortel_pci_id_table[] = { + /* Nortel emobility PCI */ + {0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,}, + {0,}, +}; + +MODULE_DEVICE_TABLE(pci, nortel_pci_id_table); + +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), +}; + +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 nortel_pci_init(void) +{ + printk(KERN_DEBUG "%s\n", version); + return pci_module_init(&nortel_pci_driver); +} + +static void __exit nortel_pci_exit(void) +{ + pci_unregister_driver(&nortel_pci_driver); + ssleep(1); +} + +module_init(nortel_pci_init); +module_exit(nortel_pci_exit); + +/* + * Local variables: + * c-indent-level: 8 + * c-basic-offset: 8 + * tab-width: 8 + * End: + */ |