drivers/net/wireless/orinoco_tmd.c

   1 /* orinoco_tmd.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 TMD7160.
   5  *
   6  * Copyright (C) 2003 Joerg Dorchain <joerg AT dorchain.net>
   7  * based heavily upon orinoco_plx.c Copyright (C) 2001 Daniel Barlow
   8  *
   9  * The contents of this file are subject to the Mozilla Public License
  10  * Version 1.1 (the "License"); you may not use this file except in
  11  * compliance with the License. You may obtain a copy of the License
  12  * at http://www.mozilla.org/MPL/
  13  *
  14  * Software distributed under the License is distributed on an "AS IS"
  15  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
  16  * the License for the specific language governing rights and
  17  * limitations under the License.
  18  *
  19  * Alternatively, the contents of this file may be used under the
  20  * terms of the GNU General Public License version 2 (the "GPL"), in
  21  * which case the provisions of the GPL are applicable instead of the
  22  * above.  If you wish to allow the use of your version of this file
  23  * only under the terms of the GPL and not to allow others to use your
  24  * version of this file under the MPL, indicate your decision by
  25  * deleting the provisions above and replace them with the notice and
  26  * other provisions required by the GPL.  If you do not delete the
  27  * provisions above, a recipient may use your version of this file
  28  * under either the MPL or the GPL.
  29  *
  30  * The actual driving is done by orinoco.c, this is just resource
  31  * allocation stuff.
  32  *
  33  * This driver is modeled after the orinoco_plx driver. The main
  34  * difference is that the TMD chip has only IO port ranges and doesn't
  35  * provide access to the PCMCIA attribute space.
  36  *
  37  * Pheecom sells cards with the TMD chip as "ASIC version"
  38  */
  39
  40 #define DRIVER_NAME "orinoco_tmd"
  41 #define PFX DRIVER_NAME ": "
  42
  43 #include <linux/config.h>
  44 #include <linux/module.h>
  45 #include <linux/kernel.h>
  46 #include <linux/init.h>
  47 #include <linux/delay.h>
  48 #include <linux/pci.h>
  49 #include <pcmcia/cisreg.h>
  50
  51 #include "orinoco.h"
  52 #include "orinoco_pci.h"
  53
  54 #define COR_VALUE       (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
  55 #define COR_RESET     (0x80)    /* reset bit in the COR register */
  56 #define TMD_RESET_TIME  (500)   /* milliseconds */
  57
  58 /*
  59  * Do a soft reset of the card using the Configuration Option Register
  60  */
  61 static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
  62 {
  63         hermes_t *hw = &priv->hw;
  64         struct orinoco_pci_card *card = priv->card;
  65         unsigned long timeout;
  66         u16 reg;
  67
  68         iowrite8(COR_VALUE | COR_RESET, card->bridge_io);
  69         mdelay(1);
  70
  71         iowrite8(COR_VALUE, card->bridge_io);
  72         mdelay(1);
  73
  74         /* Just in case, wait more until the card is no longer busy */
  75         timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
  76         reg = hermes_read_regn(hw, CMD);
  77         while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
  78                 mdelay(1);
  79                 reg = hermes_read_regn(hw, CMD);
  80         }
  81
  82         /* Still busy? */
  83         if (reg & HERMES_CMD_BUSY) {
  84                 printk(KERN_ERR PFX "Busy timeout\n");
  85                 return -ETIMEDOUT;
  86         }
  87
  88         return 0;
  89 }
  90
  91
  92 static int orinoco_tmd_init_one(struct pci_dev *pdev,
  93                                 const struct pci_device_id *ent)
  94 {
  95         int err;
  96         struct orinoco_private *priv;
  97         struct orinoco_pci_card *card;
  98         struct net_device *dev;
  99         void __iomem *hermes_io, *bridge_io;
 100
 101         err = pci_enable_device(pdev);
 102         if (err) {
 103                 printk(KERN_ERR PFX "Cannot enable PCI device\n");
 104                 return err;
 105         }
 106
 107         err = pci_request_regions(pdev, DRIVER_NAME);
 108         if (err) {
 109                 printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
 110                 goto fail_resources;
 111         }
 112
 113         bridge_io = pci_iomap(pdev, 1, 0);
 114         if (!bridge_io) {
 115                 printk(KERN_ERR PFX "Cannot map bridge registers\n");
 116                 err = -EIO;
 117                 goto fail_map_bridge;
 118         }
 119
 120         hermes_io = pci_iomap(pdev, 2, 0);
 121         if (!hermes_io) {
 122                 printk(KERN_ERR PFX "Cannot map chipset registers\n");
 123                 err = -EIO;
 124                 goto fail_map_hermes;
 125         }
 126
 127         /* Allocate network device */
 128         dev = alloc_orinocodev(sizeof(*card), orinoco_tmd_cor_reset);
 129         if (!dev) {
 130                 printk(KERN_ERR PFX "Cannot allocate network device\n");
 131                 err = -ENOMEM;
 132                 goto fail_alloc;
 133         }
 134
 135         priv = netdev_priv(dev);
 136         card = priv->card;
 137         card->bridge_io = bridge_io;
 138         SET_MODULE_OWNER(dev);
 139         SET_NETDEV_DEV(dev, &pdev->dev);
 140
 141         hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
 142
 143         err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
 144                           dev->name, dev);
 145         if (err) {
 146                 printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
 147                 err = -EBUSY;
 148                 goto fail_irq;
 149         }
 150
 151         err = orinoco_tmd_cor_reset(priv);
 152         if (err) {
 153                 printk(KERN_ERR PFX "Initial reset failed\n");
 154                 goto fail;
 155         }
 156
 157         err = register_netdev(dev);
 158         if (err) {
 159                 printk(KERN_ERR PFX "Cannot register network device\n");
 160                 goto fail;
 161         }
 162
 163         pci_set_drvdata(pdev, dev);
 164         printk(KERN_DEBUG "%s: " DRIVER_NAME " at %s\n", dev->name,
 165                pci_name(pdev));
 166
 167         return 0;
 168
 169  fail:
 170         free_irq(pdev->irq, dev);
 171
 172  fail_irq:
 173         pci_set_drvdata(pdev, NULL);
 174         free_orinocodev(dev);
 175
 176  fail_alloc:
 177         pci_iounmap(pdev, hermes_io);
 178
 179  fail_map_hermes:
 180         pci_iounmap(pdev, bridge_io);
 181
 182  fail_map_bridge:
 183         pci_release_regions(pdev);
 184
 185  fail_resources:
 186         pci_disable_device(pdev);
 187
 188         return err;
 189 }
 190
 191 static void __devexit orinoco_tmd_remove_one(struct pci_dev *pdev)
 192 {
 193         struct net_device *dev = pci_get_drvdata(pdev);
 194         struct orinoco_private *priv = dev->priv;
 195         struct orinoco_pci_card *card = priv->card;
 196
 197         unregister_netdev(dev);
 198         free_irq(pdev->irq, dev);
 199         pci_set_drvdata(pdev, NULL);
 200         free_orinocodev(dev);
 201         pci_iounmap(pdev, priv->hw.iobase);
 202         pci_iounmap(pdev, card->bridge_io);
 203         pci_release_regions(pdev);
 204         pci_disable_device(pdev);
 205 }
 206
 207 static struct pci_device_id orinoco_tmd_id_table[] = {
 208         {0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,},      /* NDC and OEMs, e.g. pheecom */
 209         {0,},
 210 };
 211
 212 MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);
 213
 214 static struct pci_driver orinoco_tmd_driver = {
 215         .name           = DRIVER_NAME,
 216         .id_table       = orinoco_tmd_id_table,
 217         .probe          = orinoco_tmd_init_one,
 218         .remove         = __devexit_p(orinoco_tmd_remove_one),
 219         .suspend        = orinoco_pci_suspend,
 220         .resume         = orinoco_pci_resume,
 221 };
 222
 223 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
 224         " (Joerg Dorchain <joerg@dorchain.net>)";
 225 MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
 226 MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
 227 MODULE_LICENSE("Dual MPL/GPL");
 228
 229 static int __init orinoco_tmd_init(void)
 230 {
 231         printk(KERN_DEBUG "%s\n", version);
 232         return pci_module_init(&orinoco_tmd_driver);
 233 }
 234
 235 static void __exit orinoco_tmd_exit(void)
 236 {
 237         pci_unregister_driver(&orinoco_tmd_driver);
 238 }
 239
 240 module_init(orinoco_tmd_init);
 241 module_exit(orinoco_tmd_exit);
 242
 243 /*
 244  * Local variables:
 245  *  c-indent-level: 8
 246  *  c-basic-offset: 8
 247  *  tab-width: 8
 248  * End:
 249  */