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_pci_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
  57 #include <linux/module.h>
  58 #include <linux/kernel.h>
  59 #include <linux/init.h>
  60 #include <linux/sched.h>
  61 #include <linux/ptrace.h>
  62 #include <linux/slab.h>
  63 #include <linux/string.h>
  64 #include <linux/timer.h>
  65 #include <linux/ioport.h>
  66 #include <asm/uaccess.h>
  67 #include <asm/io.h>
  68 #include <asm/system.h>
  69 #include <linux/netdevice.h>
  70 #include <linux/if_arp.h>
  71 #include <linux/etherdevice.h>
  72 #include <linux/list.h>
  73 #include <linux/pci.h>
  74 #include <linux/fcntl.h>
  75
  76 #include <pcmcia/cisreg.h>
  77
  78 #include "hermes.h"
  79 #include "orinoco.h"
  80
  81 #define COR_VALUE       (COR_LEVEL_REQ | COR_FUNC_ENA) /* Enable PC card with interrupt in level trigger */
  82 #define COR_RESET     (0x80)    /* reset bit in the COR register */
  83 #define TMD_RESET_TIME  (500)   /* milliseconds */
  84
  85 /* Orinoco TMD specific data */
  86 struct orinoco_tmd_card {
  87         u32 tmd_io;
  88 };
  89
  90
  91 /*
  92  * Do a soft reset of the card using the Configuration Option Register
  93  */
  94 static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
  95 {
  96         hermes_t *hw = &priv->hw;
  97         struct orinoco_tmd_card *card = priv->card;
  98         u32 addr = card->tmd_io;
  99         unsigned long timeout;
 100         u16 reg;
 101
 102         outb(COR_VALUE | COR_RESET, addr);
 103         mdelay(1);
 104
 105         outb(COR_VALUE, addr);
 106         mdelay(1);
 107
 108         /* Just in case, wait more until the card is no longer busy */
 109         timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
 110         reg = hermes_read_regn(hw, CMD);
 111         while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
 112                 mdelay(1);
 113                 reg = hermes_read_regn(hw, CMD);
 114         }
 115
 116         /* Did we timeout ? */
 117         if (reg & HERMES_CMD_BUSY) {
 118                 printk(KERN_ERR PFX "Busy timeout\n");
 119                 return -ETIMEDOUT;
 120         }
 121
 122         return 0;
 123 }
 124
 125
 126 static int orinoco_tmd_init_one(struct pci_dev *pdev,
 127                                 const struct pci_device_id *ent)
 128 {
 129         int err = 0;
 130         struct orinoco_private *priv = NULL;
 131         struct orinoco_tmd_card *card;
 132         struct net_device *dev = NULL;
 133         void __iomem *mem;
 134
 135         err = pci_enable_device(pdev);
 136         if (err) {
 137                 printk(KERN_ERR PFX "Cannot enable PCI device\n");
 138                 return err;
 139         }
 140
 141         err = pci_request_regions(pdev, DRIVER_NAME);
 142         if (err != 0) {
 143                 printk(KERN_ERR PFX "Cannot obtain PCI resources\n");
 144                 goto fail_resources;
 145         }
 146
 147         mem = pci_iomap(pdev, 2, 0);
 148         if (! mem) {
 149                 err = -ENOMEM;
 150                 goto fail_iomap;
 151         }
 152
 153         /* Allocate network device */
 154         dev = alloc_orinocodev(sizeof(*card), orinoco_tmd_cor_reset);
 155         if (! dev) {
 156                 printk(KERN_ERR PFX "Cannot allocate network device\n");
 157                 err = -ENOMEM;
 158                 goto fail_alloc;
 159         }
 160
 161         priv = netdev_priv(dev);
 162         card = priv->card;
 163         card->tmd_io = pci_resource_start(pdev, 1);
 164         dev->base_addr = pci_resource_start(pdev, 2);
 165         SET_MODULE_OWNER(dev);
 166         SET_NETDEV_DEV(dev, &pdev->dev);
 167
 168         hermes_struct_init(&priv->hw, mem, HERMES_16BIT_REGSPACING);
 169
 170         printk(KERN_DEBUG PFX "Detected Orinoco/Prism2 TMD device "
 171                "at %s irq:%d, io addr:0x%lx\n", pci_name(pdev), pdev->irq,
 172                dev->base_addr);
 173
 174         err = request_irq(pdev->irq, orinoco_interrupt, SA_SHIRQ,
 175                           dev->name, dev);
 176         if (err) {
 177                 printk(KERN_ERR PFX "Cannot allocate IRQ %d\n", pdev->irq);
 178                 err = -EBUSY;
 179                 goto fail_irq;
 180         }
 181         dev->irq = pdev->irq;
 182
 183         err = orinoco_tmd_cor_reset(priv);
 184         if (err) {
 185                 printk(KERN_ERR PFX "Initial reset failed\n");
 186                 goto fail;
 187         }
 188
 189         err = register_netdev(dev);
 190         if (err) {
 191                 printk(KERN_ERR PFX "Cannot register network device\n");
 192                 goto fail;
 193         }
 194
 195         pci_set_drvdata(pdev, dev);
 196
 197         return 0;
 198
 199  fail:
 200         free_irq(pdev->irq, dev);
 201
 202  fail_irq:
 203         pci_set_drvdata(pdev, NULL);
 204         free_orinocodev(dev);
 205
 206  fail_alloc:
 207         pci_iounmap(pdev, mem);
 208
 209  fail_iomap:
 210         pci_release_regions(pdev);
 211
 212  fail_resources:
 213         pci_disable_device(pdev);
 214
 215         return err;
 216 }
 217
 218 static void __devexit orinoco_tmd_remove_one(struct pci_dev *pdev)
 219 {
 220         struct net_device *dev = pci_get_drvdata(pdev);
 221         struct orinoco_private *priv = dev->priv;
 222
 223         BUG_ON(! dev);
 224
 225         unregister_netdev(dev);
 226         free_irq(dev->irq, dev);
 227         pci_set_drvdata(pdev, NULL);
 228         free_orinocodev(dev);
 229         pci_iounmap(pdev, priv->hw.iobase);
 230         pci_release_regions(pdev);
 231         pci_disable_device(pdev);
 232 }
 233
 234
 235 static struct pci_device_id orinoco_tmd_pci_id_table[] = {
 236         {0x15e8, 0x0131, PCI_ANY_ID, PCI_ANY_ID,},      /* NDC and OEMs, e.g. pheecom */
 237         {0,},
 238 };
 239
 240 MODULE_DEVICE_TABLE(pci, orinoco_tmd_pci_id_table);
 241
 242 static struct pci_driver orinoco_tmd_driver = {
 243         .name           = DRIVER_NAME,
 244         .id_table       = orinoco_tmd_pci_id_table,
 245         .probe          = orinoco_tmd_init_one,
 246         .remove         = __devexit_p(orinoco_tmd_remove_one),
 247 };
 248
 249 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
 250         " (Joerg Dorchain <joerg@dorchain.net>)";
 251 MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
 252 MODULE_DESCRIPTION("Driver for wireless LAN cards using the TMD7160 PCI bridge");
 253 MODULE_LICENSE("Dual MPL/GPL");
 254
 255 static int __init orinoco_tmd_init(void)
 256 {
 257         printk(KERN_DEBUG "%s\n", version);
 258         return pci_module_init(&orinoco_tmd_driver);
 259 }
 260
 261 static void __exit orinoco_tmd_exit(void)
 262 {
 263         pci_unregister_driver(&orinoco_tmd_driver);
 264         ssleep(1);
 265 }
 266
 267 module_init(orinoco_tmd_init);
 268 module_exit(orinoco_tmd_exit);
 269
 270 /*
 271  * Local variables:
 272  *  c-indent-level: 8
 273  *  c-basic-offset: 8
 274  *  tab-width: 8
 275  * End:
 276  */