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  * Caution: this is experimental and probably buggy.  For success and
  31  * failure reports for different cards and adaptors, see
  32  * orinoco_tmd_id_table near the end of the file.  If you have a
  33  * card we don't have the PCI id for, and looks like it should work,
  34  * drop me mail with the id and "it works"/"it doesn't work".
  35  *
  36  * Note: if everything gets detected fine but it doesn't actually send
  37  * or receive packets, your first port of call should probably be to
  38  * try newer firmware in the card.  Especially if you're doing Ad-Hoc
  39  * modes.
  40  *
  41  * The actual driving is done by orinoco.c, this is just resource
  42  * allocation stuff.
  43  *
  44  * This driver is modeled after the orinoco_plx driver. The main
  45  * difference is that the TMD chip has only IO port ranges and no
  46  * memory space, i.e.  no access to the CIS. Compared to the PLX chip,
  47  * the io range functionalities are exchanged.
  48  *
  49  * Pheecom sells cards with the TMD chip as "ASIC version"
  50  */
  51
  52 #define DRIVER_NAME "orinoco_tmd"
  53 #define PFX DRIVER_NAME ": "
  54
  55 #include <linux/config.h>
  56 #include <linux/module.h>
  57 #include <linux/kernel.h>
  58 #include <linux/init.h>
  59 #include <linux/delay.h>
  60 #include <linux/pci.h>
  61 #include <pcmcia/cisreg.h>
  62
  63 #include "orinoco.h"
  64 #include "orinoco_pci.h"
  65
  66 #define COR_VALUE       (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
  67 #define COR_RESET     (0x80)    /* reset bit in the COR register */
  68 #define TMD_RESET_TIME  (500)   /* milliseconds */
  69
  70 /*
  71  * Do a soft reset of the card using the Configuration Option Register
  72  */
  73 static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
  74 {
  75         hermes_t *hw = &priv->hw;
  76         struct orinoco_pci_card *card = priv->card;
  77         unsigned long timeout;
  78         u16 reg;
  79
  80         iowrite8(COR_VALUE | COR_RESET, card->bridge_io);
  81         mdelay(1);
  82
  83         iowrite8(COR_VALUE, card->bridge_io);
  84         mdelay(1);
  85
  86         /* Just in case, wait more until the card is no longer busy */
  87         timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
  88         reg = hermes_read_regn(hw, CMD);
  89         while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
  90                 mdelay(1);
  91                 reg = hermes_read_regn(hw, CMD);
  92         }
  93
  94         /* Still busy? */
  95         if (reg & HERMES_CMD_BUSY) {
  96                 printk(KERN_ERR PFX "Busy timeout\n");
  97                 return -ETIMEDOUT;
  98         }
  99
 100         return 0;
 101 }
 102
 103
 104 static int orinoco_tmd_init_one(struct pci_dev *pdev,
 105                                 const struct pci_device_id *ent)
 106 {
 107         int err;
 108         struct orinoco_private *priv;
 109         struct orinoco_pci_card *card;
 110         struct net_device *dev;
 111         void __iomem *hermes_io, *bridge_io;
 112
 113         err = pci_enable_device(pdev);
 114         if (err) {
 115                 printk(KERN_ERR PFX "Cannot enable PCI device\n");
 116                 return err;
 117         }
 118
 119         err = pci_request_regions(pdev, DRIVER_NAME);
 120         if (err) {
 121                 printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
 122                 goto fail_resources;
 123         }
 124
 125         bridge_io = pci_iomap(pdev, 1, 0);
 126         if (!bridge_io) {
 127                 printk(KERN_ERR PFX "Cannot map bridge registers\n");
 128                 err = -EIO;
 129                 goto fail_map_bridge;
 130         }
 131
 132         hermes_io = pci_iomap(pdev, 2, 0);
 133         if (!hermes_io) {
 134                 printk(KERN_ERR PFX "Cannot map chipset registers\n");
 135                 err = -EIO;
 136                 goto fail_map_hermes;
 137         }
 138
 139         /* Allocate network device */
 140         dev = alloc_orinocodev(sizeof(*card), orinoco_tmd_cor_reset);
 141         if (!dev) {
 142                 printk(KERN_ERR PFX "Cannot allocate network device\n");
 143                 err = -ENOMEM;
 144                 goto fail_alloc;
 145         }
 146
 147         priv = netdev_priv(dev);
 148         card = priv->card;
 149         card->bridge_io = bridge_io;
 150         SET_MODULE_OWNER(dev);
 151         SET_NETDEV_DEV(dev, &pdev->dev);
 152
 153         hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
 154
 155         err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
 156                           dev->name, dev);
 157         if (err) {
 158                 printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
 159                 err = -EBUSY;
 160                 goto fail_irq;
 161         }
 162         orinoco_pci_setup_netdev(dev, pdev, 2);
 163
 164         err = orinoco_tmd_cor_reset(priv);
 165         if (err) {
 166                 printk(KERN_ERR PFX "Initial reset failed\n");
 167                 goto fail;
 168         }
 169
 170         err = register_netdev(dev);
 171         if (err) {
 172                 printk(KERN_ERR PFX "Cannot register network device\n");
 173                 goto fail;
 174         }
 175
 176         pci_set_drvdata(pdev, dev);
 177
 178         return 0;
 179
 180  fail:
 181         free_irq(pdev->irq, dev);
 182
 183  fail_irq:
 184         pci_set_drvdata(pdev, NULL);
 185         free_orinocodev(dev);
 186
 187  fail_alloc:
 188         pci_iounmap(pdev, hermes_io);
 189
 190  fail_map_hermes:
 191         pci_iounmap(pdev, bridge_io);
 192
 193  fail_map_bridge:
 194         pci_release_regions(pdev);
 195
 196  fail_resources:
 197         pci_disable_device(pdev);
 198
 199         return err;
 200 }
 201
 202 static void __devexit orinoco_tmd_remove_one(struct pci_dev *pdev)
 203 {
 204         struct net_device *dev = pci_get_drvdata(pdev);
 205         struct orinoco_private *priv = dev->priv;
 206         struct orinoco_pci_card *card = priv->card;
 207
 208         unregister_netdev(dev);
 209         free_irq(dev->irq, dev);
 210         pci_set_drvdata(pdev, NULL);
 211         free_orinocodev(dev);
 212         pci_iounmap(pdev, priv->hw.iobase);
 213         pci_iounmap(pdev, card->bridge_io);
 214         pci_release_regions(pdev);
 215         pci_disable_device(pdev);
 216 }
 217
 218 static struct pci_device_id orinoco_tmd_id_table[] = {
 219         {0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,},      /* NDC and OEMs, e.g. pheecom */
 220         {0,},
 221 };
 222
 223 MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);
 224
 225 static struct pci_driver orinoco_tmd_driver = {
 226         .name           = DRIVER_NAME,
 227         .id_table       = orinoco_tmd_id_table,
 228         .probe          = orinoco_tmd_init_one,
 229         .remove         = __devexit_p(orinoco_tmd_remove_one),
 230         .suspend        = orinoco_pci_suspend,
 231         .resume         = orinoco_pci_resume,
 232 };
 233
 234 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
 235         " (Joerg Dorchain <joerg@dorchain.net>)";
 236 MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
 237 MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
 238 MODULE_LICENSE("Dual MPL/GPL");
 239
 240 static int __init orinoco_tmd_init(void)
 241 {
 242         printk(KERN_DEBUG "%s\n", version);
 243         return pci_module_init(&orinoco_tmd_driver);
 244 }
 245
 246 static void __exit orinoco_tmd_exit(void)
 247 {
 248         pci_unregister_driver(&orinoco_tmd_driver);
 249 }
 250
 251 module_init(orinoco_tmd_init);
 252 module_exit(orinoco_tmd_exit);
 253
 254 /*
 255  * Local variables:
 256  *  c-indent-level: 8
 257  *  c-basic-offset: 8
 258  *  tab-width: 8
 259  * End:
 260  */