drivers/staging/otus/zdusb.c

   1 /*
   2  * Copyright (c) 2007-2008 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 /*                                                                      */
  17 /*  Module Name : zdusb.c                                               */
  18 /*                                                                      */
  19 /*  Abstract                                                            */
  20 /*     This module contains plug and play handling for USB device driver*/
  21 /*                                                                      */
  22 /*  NOTES                                                               */
  23 /*     Platform dependent.                                              */
  24 /*                                                                      */
  25 /************************************************************************/
  26
  27 #ifdef MODVERSIONS
  28 #include <linux/modversions.h>
  29 #endif
  30
  31 #include <linux/module.h>
  32 #include <linux/usb.h>
  33
  34 #include "usbdrv.h"
  35 #include "zdusb.h"
  36
  37 int zfLnxAllocAllUrbs(struct usbdrv_private *macp);
  38 void zfLnxFreeAllUrbs(struct usbdrv_private *macp);
  39 void zfLnxUnlinkAllUrbs(struct usbdrv_private *macp);
  40
  41 MODULE_AUTHOR("Atheros Communications");
  42 MODULE_DESCRIPTION("Atheros 802.11n Wireless LAN adapter");
  43 MODULE_LICENSE("Dual BSD/GPL");
  44
  45 static const char driver_name[] = "Otus";
  46
  47 /* table of devices that work with this driver */
  48 static struct usb_device_id zd1221_ids [] = {
  49         { USB_DEVICE(VENDOR_ATHR, PRODUCT_AR9170) },
  50         { USB_DEVICE(VENDOR_DLINK, PRODUCT_DWA160A) },
  51         { USB_DEVICE(0x0846, 0x9010) },
  52         { }                                     /* Terminating entry */
  53 };
  54
  55 MODULE_DEVICE_TABLE(usb, zd1221_ids);
  56
  57 extern u8_t zfLnxInitSetup(struct net_device *dev, struct usbdrv_private *macp);
  58 extern int usbdrv_close(struct net_device *dev);
  59 extern u8_t zfLnxClearStructs(struct net_device *dev);
  60 extern int zfWdsClose(struct net_device *dev);
  61 extern int zfUnregisterWdsDev(struct net_device* parentDev, u16_t wdsId);
  62 extern int zfLnxVapClose(struct net_device *dev);
  63 extern int zfLnxUnregisterVapDev(struct net_device* parentDev, u16_t vapId);
  64
  65 /* WDS */
  66 extern struct zsWdsStruct wds[ZM_WDS_PORT_NUMBER];
  67
  68 /* VAP */
  69 extern struct zsVapStruct vap[ZM_VAP_PORT_NUMBER];
  70
  71 static int zfLnxProbe(struct usb_interface *interface,
  72         const struct usb_device_id *id)
  73 {
  74     struct usb_device *dev = interface_to_usbdev(interface);
  75
  76     struct net_device *net = NULL;
  77     struct usbdrv_private *macp = NULL;
  78     int vendor_id, product_id;
  79     int result = 0;
  80
  81     usb_get_dev(dev);
  82
  83     vendor_id = dev->descriptor.idVendor;
  84     product_id = dev->descriptor.idProduct;
  85
  86 #ifdef HMAC_DEBUG
  87     printk(KERN_NOTICE "vendor_id = %04x\n", vendor_id);
  88     printk(KERN_NOTICE "product_id = %04x\n", product_id);
  89
  90     if (dev->speed == USB_SPEED_HIGH)
  91         printk(KERN_NOTICE "USB 2.0 Host\n");
  92     else
  93         printk(KERN_NOTICE "USB 1.1 Host\n");
  94 #endif
  95
  96     if (!(macp = kmalloc(sizeof(struct usbdrv_private), GFP_KERNEL)))
  97     {
  98         printk(KERN_ERR "out of memory allocating device structure\n");
  99         result = -ENOMEM;
 100         goto fail;
 101     }
 102
 103     /* Zero the memory */
 104     memset(macp, 0, sizeof(struct usbdrv_private));
 105
 106     net = alloc_etherdev(0);
 107
 108     if (net == NULL)
 109     {
 110         printk(KERN_ERR "zfLnxProbe: Not able to alloc etherdev struct\n");
 111         result = -ENOMEM;
 112         goto fail1;
 113     }
 114
 115     strcpy(net->name, "ath%d");
 116
 117     net->ml_priv = macp;   //kernel 2.6
 118     macp->udev = dev;
 119     macp->device = net;
 120
 121     /* set up the endpoint information */
 122     /* check out the endpoints */
 123     macp->interface = interface;
 124
 125     //init_waitqueue_head(&macp->regSet_wait);
 126     //init_waitqueue_head(&macp->iorwRsp_wait);
 127     //init_waitqueue_head(&macp->term_wait);
 128
 129     if (!zfLnxAllocAllUrbs(macp))
 130     {
 131         result = -ENOMEM;
 132         goto fail2;
 133     }
 134
 135     if (!zfLnxInitSetup(net, macp))
 136     {
 137         result = -EIO;
 138         goto fail3;
 139     }
 140     else
 141     {
 142         usb_set_intfdata(interface, macp);
 143         SET_NETDEV_DEV(net, &interface->dev);
 144
 145         if (register_netdev(net) != 0)
 146         {
 147             usb_set_intfdata(interface, NULL);
 148             goto fail3;
 149         }
 150     }
 151
 152     netif_carrier_off(net);
 153     goto done;
 154
 155 fail3:
 156     zfLnxFreeAllUrbs(macp);
 157 fail2:
 158     free_netdev(net);  //kernel 2.6
 159 fail1:
 160     kfree(macp);
 161
 162 fail:
 163     usb_put_dev(dev);
 164     macp = NULL;
 165
 166 done:
 167     return result;
 168 }
 169
 170 static void zfLnxDisconnect(struct usb_interface *interface)
 171 {
 172     struct usbdrv_private *macp = (struct usbdrv_private *) usb_get_intfdata(interface);
 173
 174     printk(KERN_DEBUG "zfLnxDisconnect\n");
 175
 176     if (!macp)
 177     {
 178         printk(KERN_ERR "unregistering non-existant device\n");
 179         return;
 180     }
 181
 182     if (macp->driver_isolated)
 183     {
 184         if (macp->device->flags & IFF_UP)
 185             usbdrv_close(macp->device);
 186     }
 187
 188 #if 0
 189     /* Close WDS */
 190     //zfWdsClose(wds[0].dev);
 191     /* Unregister WDS */
 192     //zfUnregisterWdsDev(macp->device, 0);
 193
 194     /* Close VAP */
 195     zfLnxVapClose(vap[0].dev);
 196     /* Unregister VAP */
 197     zfLnxUnregisterVapDev(macp->device, 0);
 198 #endif
 199
 200     zfLnxClearStructs(macp->device);
 201
 202     unregister_netdev(macp->device);
 203
 204     usb_put_dev(interface_to_usbdev(interface));
 205
 206     //printk(KERN_ERR "3. zfLnxUnlinkAllUrbs\n");
 207     //zfLnxUnlinkAllUrbs(macp);
 208
 209     /* Free network interface */
 210     free_netdev(macp->device);
 211
 212     zfLnxFreeAllUrbs(macp);
 213     //zfLnxClearStructs(macp->device);
 214     kfree(macp);
 215     macp = NULL;
 216
 217     usb_set_intfdata(interface, NULL);
 218 }
 219
 220 static struct usb_driver zd1221_driver = {
 221         .name         = driver_name,
 222         .probe        = zfLnxProbe,
 223         .disconnect   = zfLnxDisconnect,
 224         .id_table     = zd1221_ids,
 225 };
 226
 227 int __init zfLnxIinit(void)
 228 {
 229     printk(KERN_NOTICE "%s - version %s\n",  DRIVER_NAME, VERSIONID);
 230     return usb_register(&zd1221_driver);
 231 }
 232
 233 void __exit zfLnxExit(void)
 234 {
 235     usb_deregister(&zd1221_driver);
 236 }
 237
 238 module_init(zfLnxIinit);
 239 module_exit(zfLnxExit);