drivers/net/wireless/orinoco/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 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  */
  60 static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
  61 {
  62         hermes_t *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
  91 static 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);
 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         pci_set_drvdata(pdev, NULL);
 174         free_orinocodev(priv);
 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 orinoco_private *priv = pci_get_drvdata(pdev);
 194         struct orinoco_pci_card *card = priv->card;
 195
 196         orinoco_if_del(priv);
 197         free_irq(pdev->irq, priv);
 198         pci_set_drvdata(pdev, NULL);
 199         free_orinocodev(priv);
 200         pci_iounmap(pdev, priv->hw.iobase);
 201         pci_iounmap(pdev, card->bridge_io);
 202         pci_release_regions(pdev);
 203         pci_disable_device(pdev);
 204 }
 205
 206 static DEFINE_PCI_DEVICE_TABLE(orinoco_tmd_id_table) = {
 207         {0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,},      /* NDC and OEMs, e.g. pheecom */
 208         {0,},
 209 };
 210
 211 MODULE_DEVICE_TABLE(pci, orinoco_tmd_id_table);
 212
 213 static struct pci_driver orinoco_tmd_driver = {
 214         .name           = DRIVER_NAME,
 215         .id_table       = orinoco_tmd_id_table,
 216         .probe          = orinoco_tmd_init_one,
 217         .remove         = __devexit_p(orinoco_tmd_remove_one),
 218         .suspend        = orinoco_pci_suspend,
 219         .resume         = orinoco_pci_resume,
 220 };
 221
 222 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
 223         " (Joerg Dorchain <joerg@dorchain.net>)";
 224 MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
 225 MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
 226 MODULE_LICENSE("Dual MPL/GPL");
 227
 228 static int __init orinoco_tmd_init(void)
 229 {
 230         printk(KERN_DEBUG "%s\n", version);
 231         return pci_register_driver(&orinoco_tmd_driver);
 232 }
 233
 234 static void __exit orinoco_tmd_exit(void)
 235 {
 236         pci_unregister_driver(&orinoco_tmd_driver);
 237 }
 238
 239 module_init(orinoco_tmd_init);
 240 module_exit(orinoco_tmd_exit);
 241
 242 /*
 243  * Local variables:
 244  *  c-indent-level: 8
 245  *  c-basic-offset: 8
 246  *  tab-width: 8
 247  * End:
 248  */