linux/drivers/net/wireless/orinoco/orinoco_tmd.c
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   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 main.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/module.h>
  44#include <linux/kernel.h>
  45#include <linux/init.h>
  46#include <linux/delay.h>
  47#include <linux/pci.h>
  48#include <pcmcia/cisreg.h>
  49
  50#include "orinoco.h"
  51#include "orinoco_pci.h"
  52
  53#define COR_VALUE       (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
  54#define COR_RESET     (0x80)    /* reset bit in the COR register */
  55#define TMD_RESET_TIME  (500)   /* milliseconds */
  56
  57/*
  58 * Do a soft reset of the card using the Configuration Option Register
  59 */
  60static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
  61{
  62        struct hermes *hw = &priv->hw;
  63        struct orinoco_pci_card *card = priv->card;
  64        unsigned long timeout;
  65        u16 reg;
  66
  67        iowrite8(COR_VALUE | COR_RESET, card->bridge_io);
  68        mdelay(1);
  69
  70        iowrite8(COR_VALUE, card->bridge_io);
  71        mdelay(1);
  72
  73        /* Just in case, wait more until the card is no longer busy */
  74        timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
  75        reg = hermes_read_regn(hw, CMD);
  76        while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
  77                mdelay(1);
  78                reg = hermes_read_regn(hw, CMD);
  79        }
  80
  81        /* Still busy? */
  82        if (reg & HERMES_CMD_BUSY) {
  83                printk(KERN_ERR PFX "Busy timeout\n");
  84                return -ETIMEDOUT;
  85        }
  86
  87        return 0;
  88}
  89
  90
  91static int orinoco_tmd_init_one(struct pci_dev *pdev,
  92                                const struct pci_device_id *ent)
  93{
  94        int err;
  95        struct orinoco_private *priv;
  96        struct orinoco_pci_card *card;
  97        void __iomem *hermes_io, *bridge_io;
  98
  99        err = pci_enable_device(pdev);
 100        if (err) {
 101                printk(KERN_ERR PFX "Cannot enable PCI device\n");
 102                return err;
 103        }
 104
 105        err = pci_request_regions(pdev, DRIVER_NAME);
 106        if (err) {
 107                printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
 108                goto fail_resources;
 109        }
 110
 111        bridge_io = pci_iomap(pdev, 1, 0);
 112        if (!bridge_io) {
 113                printk(KERN_ERR PFX "Cannot map bridge registers\n");
 114                err = -EIO;
 115                goto fail_map_bridge;
 116        }
 117
 118        hermes_io = pci_iomap(pdev, 2, 0);
 119        if (!hermes_io) {
 120                printk(KERN_ERR PFX "Cannot map chipset registers\n");
 121                err = -EIO;
 122                goto fail_map_hermes;
 123        }
 124
 125        /* Allocate network device */
 126        priv = alloc_orinocodev(sizeof(*card), &pdev->dev,
 127                                orinoco_tmd_cor_reset, NULL);
 128        if (!priv) {
 129                printk(KERN_ERR PFX "Cannot allocate network device\n");
 130                err = -ENOMEM;
 131                goto fail_alloc;
 132        }
 133
 134        card = priv->card;
 135        card->bridge_io = bridge_io;
 136
 137        hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING);
 138
 139        err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,
 140                          DRIVER_NAME, priv);
 141        if (err) {
 142                printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
 143                err = -EBUSY;
 144                goto fail_irq;
 145        }
 146
 147        err = orinoco_tmd_cor_reset(priv);
 148        if (err) {
 149                printk(KERN_ERR PFX "Initial reset failed\n");
 150                goto fail;
 151        }
 152
 153        err = orinoco_init(priv);
 154        if (err) {
 155                printk(KERN_ERR PFX "orinoco_init() failed\n");
 156                goto fail;
 157        }
 158
 159        err = orinoco_if_add(priv, 0, 0, NULL);
 160        if (err) {
 161                printk(KERN_ERR PFX "orinoco_if_add() failed\n");
 162                goto fail;
 163        }
 164
 165        pci_set_drvdata(pdev, priv);
 166
 167        return 0;
 168
 169 fail:
 170        free_irq(pdev->irq, priv);
 171
 172 fail_irq:
 173        free_orinocodev(priv);
 174
 175 fail_alloc:
 176        pci_iounmap(pdev, hermes_io);
 177
 178 fail_map_hermes:
 179        pci_iounmap(pdev, bridge_io);
 180
 181 fail_map_bridge:
 182        pci_release_regions(pdev);
 183
 184 fail_resources:
 185        pci_disable_device(pdev);
 186
 187        return err;
 188}
 189
 190static void orinoco_tmd_remove_one(struct pci_dev *pdev)
 191{
 192        struct orinoco_private *priv = pci_get_drvdata(pdev);
 193        struct orinoco_pci_card *card = priv->card;
 194
 195        orinoco_if_del(priv);
 196        free_irq(pdev->irq, priv);
 197        free_orinocodev(priv);
 198        pci_iounmap(pdev, priv->hw.iobase);
 199        pci_iounmap(pdev, card->bridge_io);
 200        pci_release_regions(pdev);
 201        pci_disable_device(pdev);
 202}
 203
 204static DEFINE_PCI_DEVICE_TABLE(orinoco_tmd_id_table) = {
 205        {0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,},      /* NDC and OEMs, e.g. pheecom */
 206        {0,},
 207};
 208
 209MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);
 210
 211static struct pci_driver orinoco_tmd_driver = {
 212        .name           = DRIVER_NAME,
 213        .id_table       = orinoco_tmd_id_table,
 214        .probe          = orinoco_tmd_init_one,
 215        .remove         = orinoco_tmd_remove_one,
 216        .suspend        = orinoco_pci_suspend,
 217        .resume         = orinoco_pci_resume,
 218};
 219
 220static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
 221        " (Joerg Dorchain <joerg@dorchain.net>)";
 222MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
 223MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
 224MODULE_LICENSE("Dual MPL/GPL");
 225
 226static int __init orinoco_tmd_init(void)
 227{
 228        printk(KERN_DEBUG "%s\n", version);
 229        return pci_register_driver(&orinoco_tmd_driver);
 230}
 231
 232static void __exit orinoco_tmd_exit(void)
 233{
 234        pci_unregister_driver(&orinoco_tmd_driver);
 235}
 236
 237module_init(orinoco_tmd_init);
 238module_exit(orinoco_tmd_exit);
 239
 240/*
 241 * Local variables:
 242 *  c-indent-level: 8
 243 *  c-basic-offset: 8
 244 *  tab-width: 8
 245 * End:
 246 */
 247
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