drivers/net/wireless/orinoco_nortel.c

   1 /* orinoco_nortel.c
   2  *
   3  * Driver for Prism II devices which would usually be driven by orinoco_cs,
   4  * but are connected to the PCI bus by a PCI-to-PCMCIA adapter used in
   5  * Nortel emobility, Symbol LA-4113 and Symbol LA-4123.
   6  * but are connected to the PCI bus by a Nortel PCI-PCMCIA-Adapter.
   7  *
   8  * Copyright (C) 2002 Tobias Hoffmann
   9  *           (C) 2003 Christoph Jungegger <disdos@traum404.de>
  10  *
  11  * Some of this code is borrowed from orinoco_plx.c
  12  *      Copyright (C) 2001 Daniel Barlow
  13  * Some of this code is borrowed from orinoco_pci.c
  14  *  Copyright (C) 2001 Jean Tourrilhes
  15  * Some of this code is "inspired" by linux-wlan-ng-0.1.10, but nothing
  16  * has been copied from it. linux-wlan-ng-0.1.10 is originally :
  17  *      Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
  18  *
  19  * The contents of this file are subject to the Mozilla Public License
  20  * Version 1.1 (the "License"); you may not use this file except in
  21  * compliance with the License. You may obtain a copy of the License
  22  * at http://www.mozilla.org/MPL/
  23  *
  24  * Software distributed under the License is distributed on an "AS IS"
  25  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
  26  * the License for the specific language governing rights and
  27  * limitations under the License.
  28  *
  29  * Alternatively, the contents of this file may be used under the
  30  * terms of the GNU General Public License version 2 (the "GPL"), in
  31  * which case the provisions of the GPL are applicable instead of the
  32  * above.  If you wish to allow the use of your version of this file
  33  * only under the terms of the GPL and not to allow others to use your
  34  * version of this file under the MPL, indicate your decision by
  35  * deleting the provisions above and replace them with the notice and
  36  * other provisions required by the GPL.  If you do not delete the
  37  * provisions above, a recipient may use your version of this file
  38  * under either the MPL or the GPL.
  39  */
  40
  41 #define DRIVER_NAME "orinoco_nortel"
  42 #define PFX DRIVER_NAME ": "
  43
  44 #include <linux/config.h>
  45 #include <linux/module.h>
  46 #include <linux/kernel.h>
  47 #include <linux/init.h>
  48 #include <linux/delay.h>
  49 #include <linux/pci.h>
  50 #include <pcmcia/cisreg.h>
  51
  52 #include "orinoco.h"
  53
  54 #define COR_OFFSET    (0xe0)    /* COR attribute offset of Prism2 PC card */
  55 #define COR_VALUE     (COR_LEVEL_REQ | COR_FUNC_ENA)    /* Enable PC card with interrupt in level trigger */
  56
  57
  58 /* Nortel specific data */
  59 struct nortel_pci_card {
  60         unsigned long iobase1;
  61         unsigned long iobase2;
  62 };
  63
  64 /*
  65  * Do a soft reset of the PCI card using the Configuration Option Register
  66  * We need this to get going...
  67  * This is the part of the code that is strongly inspired from wlan-ng
  68  *
  69  * Note bis : Don't try to access HERMES_CMD during the reset phase.
  70  * It just won't work !
  71  */
  72 static int nortel_pci_cor_reset(struct orinoco_private *priv)
  73 {
  74         struct nortel_pci_card *card = priv->card;
  75
  76         /* Assert the reset until the card notice */
  77         outw_p(8, card->iobase1 + 2);
  78         inw(card->iobase2 + COR_OFFSET);
  79         outw_p(0x80, card->iobase2 + COR_OFFSET);
  80         mdelay(1);
  81
  82         /* Give time for the card to recover from this hard effort */
  83         outw_p(0, card->iobase2 + COR_OFFSET);
  84         outw_p(0, card->iobase2 + COR_OFFSET);
  85         mdelay(1);
  86
  87         /* set COR as usual */
  88         outw_p(COR_VALUE, card->iobase2 + COR_OFFSET);
  89         outw_p(COR_VALUE, card->iobase2 + COR_OFFSET);
  90         mdelay(1);
  91
  92         outw_p(0x228, card->iobase1 + 2);
  93
  94         return 0;
  95 }
  96
  97 static int nortel_pci_hw_init(struct nortel_pci_card *card)
  98 {
  99         int i;
 100         u32 reg;
 101
 102         /* setup bridge */
 103         if (inw(card->iobase1) & 1) {
 104                 printk(KERN_ERR PFX "brg1 answer1 wrong\n");
 105                 return -EBUSY;
 106         }
 107         outw_p(0x118, card->iobase1 + 2);
 108         outw_p(0x108, card->iobase1 + 2);
 109         mdelay(30);
 110         outw_p(0x8, card->iobase1 + 2);
 111         for (i = 0; i < 30; i++) {
 112                 mdelay(30);
 113                 if (inw(card->iobase1) & 0x10) {
 114                         break;
 115                 }
 116         }
 117         if (i == 30) {
 118                 printk(KERN_ERR PFX "brg1 timed out\n");
 119                 return -EBUSY;
 120         }
 121         if (inw(card->iobase2 + 0xe0) & 1) {
 122                 printk(KERN_ERR PFX "brg2 answer1 wrong\n");
 123                 return -EBUSY;
 124         }
 125         if (inw(card->iobase2 + 0xe2) & 1) {
 126                 printk(KERN_ERR PFX "brg2 answer2 wrong\n");
 127                 return -EBUSY;
 128         }
 129         if (inw(card->iobase2 + 0xe4) & 1) {
 130                 printk(KERN_ERR PFX "brg2 answer3 wrong\n");
 131                 return -EBUSY;
 132         }
 133
 134         /* set the PCMCIA COR-Register */
 135         outw_p(COR_VALUE, card->iobase2 + COR_OFFSET);
 136         mdelay(1);
 137         reg = inw(card->iobase2 + COR_OFFSET);
 138         if (reg != COR_VALUE) {
 139                 printk(KERN_ERR PFX "Error setting COR value (reg=%x)\n",
 140                        reg);
 141                 return -EBUSY;
 142         }
 143
 144         /* set leds */
 145         outw_p(1, card->iobase1 + 10);
 146         return 0;
 147 }
 148
 149 static int nortel_pci_init_one(struct pci_dev *pdev,
 150                                const struct pci_device_id *ent)
 151 {
 152         int err;
 153         struct orinoco_private *priv;
 154         struct nortel_pci_card *card;
 155         struct net_device *dev;
 156         void __iomem *iomem;
 157
 158         err = pci_enable_device(pdev);
 159         if (err) {
 160                 printk(KERN_ERR PFX "Cannot enable PCI device\n");
 161                 return err;
 162         }
 163
 164         err = pci_request_regions(pdev, DRIVER_NAME);
 165         if (err != 0) {
 166                 printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
 167                 goto fail_resources;
 168         }
 169
 170         iomem = pci_iomap(pdev, 2, 0);
 171         if (!iomem) {
 172                 err = -ENOMEM;
 173                 goto fail_map_io;
 174         }
 175
 176         /* Allocate network device */
 177         dev = alloc_orinocodev(sizeof(*card), nortel_pci_cor_reset);
 178         if (!dev) {
 179                 printk(KERN_ERR PFX "Cannot allocate network device\n");
 180                 err = -ENOMEM;
 181                 goto fail_alloc;
 182         }
 183
 184         priv = netdev_priv(dev);
 185         card = priv->card;
 186         card->iobase1 = pci_resource_start(pdev, 0);
 187         card->iobase2 = pci_resource_start(pdev, 1);
 188         dev->base_addr = pci_resource_start(pdev, 2);
 189         SET_MODULE_OWNER(dev);
 190         SET_NETDEV_DEV(dev, &pdev->dev);
 191
 192         hermes_struct_init(&priv->hw, iomem, HERMES_16BIT_REGSPACING);
 193
 194         printk(KERN_DEBUG PFX "Detected Nortel PCI device at %s irq:%d, "
 195                "io addr:0x%lx\n", pci_name(pdev), pdev->irq, dev->base_addr);
 196
 197         err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
 198                           dev->name, dev);
 199         if (err) {
 200                 printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
 201                 err = -EBUSY;
 202                 goto fail_irq;
 203         }
 204         dev->irq = pdev->irq;
 205
 206         err = nortel_pci_hw_init(card);
 207         if (err) {
 208                 printk(KERN_ERR PFX "Hardware initialization failed\n");
 209                 goto fail;
 210         }
 211
 212         err = nortel_pci_cor_reset(priv);
 213         if (err) {
 214                 printk(KERN_ERR PFX "Initial reset failed\n");
 215                 goto fail;
 216         }
 217
 218
 219         err = register_netdev(dev);
 220         if (err) {
 221                 printk(KERN_ERR PFX "Cannot register network device\n");
 222                 goto fail;
 223         }
 224
 225         pci_set_drvdata(pdev, dev);
 226
 227         return 0;
 228
 229  fail:
 230         free_irq(pdev->irq, dev);
 231
 232  fail_irq:
 233         pci_set_drvdata(pdev, NULL);
 234         free_orinocodev(dev);
 235
 236  fail_alloc:
 237         pci_iounmap(pdev, iomem);
 238
 239  fail_map_io:
 240         pci_release_regions(pdev);
 241
 242  fail_resources:
 243         pci_disable_device(pdev);
 244
 245         return err;
 246 }
 247
 248 static void __devexit nortel_pci_remove_one(struct pci_dev *pdev)
 249 {
 250         struct net_device *dev = pci_get_drvdata(pdev);
 251         struct orinoco_private *priv = netdev_priv(dev);
 252         struct nortel_pci_card *card = priv->card;
 253
 254         /* clear leds */
 255         outw_p(0, card->iobase1 + 10);
 256
 257         unregister_netdev(dev);
 258         free_irq(dev->irq, dev);
 259         pci_set_drvdata(pdev, NULL);
 260         free_orinocodev(dev);
 261         pci_iounmap(pdev, priv->hw.iobase);
 262         pci_release_regions(pdev);
 263         pci_disable_device(pdev);
 264 }
 265
 266
 267 static struct pci_device_id nortel_pci_id_table[] = {
 268         /* Nortel emobility PCI */
 269         {0x126c, 0x8030, PCI_ANY_ID, PCI_ANY_ID,},
 270         /* Symbol LA-4123 PCI */
 271         {0x1562, 0x0001, PCI_ANY_ID, PCI_ANY_ID,},
 272         {0,},
 273 };
 274
 275 MODULE_DEVICE_TABLE(pci, nortel_pci_id_table);
 276
 277 static struct pci_driver nortel_pci_driver = {
 278         .name = DRIVER_NAME,
 279         .id_table = nortel_pci_id_table,
 280         .probe = nortel_pci_init_one,
 281         .remove = __devexit_p(nortel_pci_remove_one),
 282 };
 283
 284 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
 285         " (Tobias Hoffmann & Christoph Jungegger <disdos@traum404.de>)";
 286 MODULE_AUTHOR("Christoph Jungegger <disdos@traum404.de>");
 287 MODULE_DESCRIPTION
 288     ("Driver for wireless LAN cards using the Nortel PCI bridge");
 289 MODULE_LICENSE("Dual MPL/GPL");
 290
 291 static int __init nortel_pci_init(void)
 292 {
 293         printk(KERN_DEBUG "%s\n", version);
 294         return pci_module_init(&nortel_pci_driver);
 295 }
 296
 297 static void __exit nortel_pci_exit(void)
 298 {
 299         pci_unregister_driver(&nortel_pci_driver);
 300         ssleep(1);
 301 }
 302
 303 module_init(nortel_pci_init);
 304 module_exit(nortel_pci_exit);
 305
 306 /*
 307  * Local variables:
 308  *  c-indent-level: 8
 309  *  c-basic-offset: 8
 310  *  tab-width: 8
 311  * End:
 312  */