drivers/staging/wlan-ng/prism2_pci.c

   1 #define WLAN_HOSTIF WLAN_PCI
   2 #include "hfa384x.c"
   3 #include "prism2mgmt.c"
   4 #include "prism2mib.c"
   5 #include "prism2sta.c"
   6
   7 #define PCI_SIZE                0x1000          /* Memory size - 4K bytes */
   8
   9 /* ISL3874A 11Mb/s WLAN controller */
  10 #define PCIVENDOR_INTERSIL      0x1260UL
  11 #define PCIDEVICE_ISL3874       0x3873UL /* [MSM] yeah I know...the ID says
  12                                             3873. Trust me, it's a 3874. */
  13
  14 /* Samsung SWL-2210P 11Mb/s WLAN controller (uses ISL3874A) */
  15 #define PCIVENDOR_SAMSUNG      0x167dUL
  16 #define PCIDEVICE_SWL_2210P    0xa000UL
  17
  18 #define PCIVENDOR_NETGEAR      0x1385UL /* for MA311 */
  19
  20 /* PCI Class & Sub-Class code, Network-'Other controller' */
  21 #define PCI_CLASS_NETWORK_OTHERS 0x280
  22
  23
  24 /*----------------------------------------------------------------
  25 * prism2sta_probe_pci
  26 *
  27 * Probe routine called when a PCI device w/ matching ID is found.
  28 * The ISL3874 implementation uses the following map:
  29 *   BAR0: Prism2.x registers memory mapped, size=4k
  30 * Here's the sequence:
  31 *   - Allocate the PCI resources.
  32 *   - Read the PCMCIA attribute memory to make sure we have a WLAN card
  33 *   - Reset the MAC
  34 *   - Initialize the netdev and wlan data
  35 *   - Initialize the MAC
  36 *
  37 * Arguments:
  38 *       pdev            ptr to pci device structure containing info about
  39 *                       pci configuration.
  40 *       id              ptr to the device id entry that matched this device.
  41 *
  42 * Returns:
  43 *       zero            - success
  44 *       negative        - failed
  45 *
  46 * Side effects:
  47 *
  48 *
  49 * Call context:
  50 *       process thread
  51 *
  52 ----------------------------------------------------------------*/
  53 static int __devinit
  54 prism2sta_probe_pci(
  55         struct pci_dev *pdev,
  56         const struct pci_device_id *id)
  57 {
  58         int             result;
  59         phys_t          phymem = 0;
  60         void            __iomem *mem = NULL;
  61         wlandevice_t    *wlandev = NULL;
  62         hfa384x_t       *hw = NULL;
  63
  64         DBFENTER;
  65
  66         /* Enable the pci device */
  67         if (pci_enable_device(pdev)) {
  68                 WLAN_LOG_ERROR("%s: pci_enable_device() failed.\n", dev_info);
  69                 result = -EIO;
  70                 goto fail;
  71         }
  72
  73         /* Figure out our resources */
  74         phymem = pci_resource_start(pdev, 0);
  75
  76         if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) {
  77                 printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n");
  78                 result = -EIO;
  79                 goto fail;
  80         }
  81
  82         mem = ioremap(phymem, PCI_SIZE);
  83         if ( mem == 0 ) {
  84                 WLAN_LOG_ERROR("%s: ioremap() failed.\n", dev_info);
  85                 result = -EIO;
  86                 goto fail;
  87         }
  88
  89         /* Log the device */
  90         WLAN_LOG_INFO("A Prism2.5 PCI device found, "
  91                 "phymem:0x%llx, irq:%d, mem:0x%p\n",
  92                 (unsigned long long)phymem, pdev->irq, mem);
  93
  94         if ((wlandev = create_wlan()) == NULL) {
  95                 WLAN_LOG_ERROR("%s: Memory allocation failure.\n", dev_info);
  96                 result = -EIO;
  97                 goto fail;
  98         }
  99         hw = wlandev->priv;
 100
 101         if ( wlan_setup(wlandev) != 0 ) {
 102                 WLAN_LOG_ERROR("%s: wlan_setup() failed.\n", dev_info);
 103                 result = -EIO;
 104                 goto fail;
 105         }
 106
 107         /* Setup netdevice's ability to report resources
 108          * Note: the netdevice was allocated by wlan_setup()
 109          */
 110         wlandev->netdev->irq = pdev->irq;
 111         wlandev->netdev->mem_start = (unsigned long) mem;
 112         wlandev->netdev->mem_end = wlandev->netdev->mem_start +
 113                 pci_resource_len(pdev, 0);
 114
 115         /* Initialize the hw data */
 116         hfa384x_create(hw, wlandev->netdev->irq, 0, mem);
 117         hw->wlandev = wlandev;
 118
 119         /* Register the wlandev, this gets us a name and registers the
 120          * linux netdevice.
 121          */
 122         SET_MODULE_OWNER(wlandev->netdev);
 123 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
 124        SET_NETDEV_DEV(wlandev->netdev, &(pdev->dev));
 125 #endif
 126         if ( register_wlandev(wlandev) != 0 ) {
 127                 WLAN_LOG_ERROR("%s: register_wlandev() failed.\n", dev_info);
 128                 result = -EIO;
 129                 goto fail;
 130         }
 131
 132 #if 0
 133         /* TODO: Move this and an irq test into an hfa384x_testif() routine.
 134          */
 135         outw(PRISM2STA_MAGIC, HFA384x_SWSUPPORT(wlandev->netdev->base_addr));
 136         reg=inw( HFA384x_SWSUPPORT(wlandev->netdev->base_addr));
 137         if ( reg != PRISM2STA_MAGIC ) {
 138                 WLAN_LOG_ERROR("MAC register access test failed!\n");
 139                 result = -EIO;
 140                 goto fail;
 141         }
 142 #endif
 143
 144         /* Do a chip-level reset on the MAC */
 145         if (prism2_doreset) {
 146                 result = hfa384x_corereset(hw,
 147                                 prism2_reset_holdtime,
 148                                 prism2_reset_settletime, 0);
 149                 if (result != 0) {
 150                         WLAN_LOG_ERROR(
 151                                 "%s: hfa384x_corereset() failed.\n",
 152                                 dev_info);
 153                         unregister_wlandev(wlandev);
 154                         hfa384x_destroy(hw);
 155                         result = -EIO;
 156                         goto fail;
 157                 }
 158         }
 159
 160         pci_set_drvdata(pdev, wlandev);
 161
 162         /* Shouldn't actually hook up the IRQ until we
 163          * _know_ things are alright.  A test routine would help.
 164          */
 165         request_irq(wlandev->netdev->irq, hfa384x_interrupt,
 166                 SA_SHIRQ, wlandev->name, wlandev);
 167
 168         wlandev->msdstate = WLAN_MSD_HWPRESENT;
 169
 170         result = 0;
 171         goto done;
 172
 173  fail:
 174         pci_set_drvdata(pdev, NULL);
 175         if (wlandev)    kfree(wlandev);
 176         if (hw)         kfree(hw);
 177         if (mem)        iounmap(mem);
 178         pci_release_regions(pdev);
 179         pci_disable_device(pdev);
 180
 181  done:
 182         DBFEXIT;
 183         return result;
 184 }
 185
 186 static void __devexit prism2sta_remove_pci(struct pci_dev *pdev)
 187 {
 188         wlandevice_t            *wlandev;
 189         hfa384x_t       *hw;
 190
 191         wlandev = (wlandevice_t *) pci_get_drvdata(pdev);
 192         hw = wlandev->priv;
 193
 194         p80211netdev_hwremoved(wlandev);
 195
 196         /* reset hardware */
 197         prism2sta_ifstate(wlandev, P80211ENUM_ifstate_disable);
 198
 199         if (pdev->irq)
 200                 free_irq(pdev->irq, wlandev);
 201
 202         unregister_wlandev(wlandev);
 203
 204         /* free local stuff */
 205         if (hw) {
 206                 hfa384x_destroy(hw);
 207                 kfree(hw);
 208         }
 209
 210         iounmap((void __iomem *)wlandev->netdev->mem_start);
 211         wlan_unsetup(wlandev);
 212
 213         pci_release_regions(pdev);
 214         pci_disable_device(pdev);
 215         pci_set_drvdata(pdev, NULL);
 216
 217         kfree(wlandev);
 218 }
 219
 220
 221 static struct pci_device_id pci_id_tbl[] = {
 222         {
 223                 PCIVENDOR_INTERSIL, PCIDEVICE_ISL3874,
 224                 PCI_ANY_ID, PCI_ANY_ID,
 225                 0, 0,
 226                 /* Driver data, we just put the name here */
 227                 (unsigned long)"Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller"
 228         },
 229         {
 230                 PCIVENDOR_INTERSIL, 0x3872,
 231                 PCI_ANY_ID, PCI_ANY_ID,
 232                 0, 0,
 233                 /* Driver data, we just put the name here */
 234                 (unsigned long)"Intersil Prism2.5 ISL3872 11Mb/s WLAN Controller"
 235         },
 236         {
 237                PCIVENDOR_SAMSUNG, PCIDEVICE_SWL_2210P,
 238                PCI_ANY_ID, PCI_ANY_ID,
 239                0, 0,
 240                /* Driver data, we just put the name here */
 241                (unsigned long)"Samsung MagicLAN SWL-2210P 11Mb/s WLAN Controller"
 242         },
 243         { /* for NetGear MA311 */
 244                 PCIVENDOR_NETGEAR, 0x3872,
 245                 PCI_ANY_ID, PCI_ANY_ID,
 246                 0, 0,
 247                 /* Driver data, we just put the name here */
 248                 (unsigned long)"Netgear MA311 WLAN Controller"
 249         },
 250         {
 251                 0, 0, 0, 0, 0, 0, 0
 252         }
 253 };
 254
 255 MODULE_DEVICE_TABLE(pci, pci_id_tbl);
 256
 257 /* Function declared here because of ptr reference below */
 258 static int  __devinit prism2sta_probe_pci(struct pci_dev *pdev,
 259                                 const struct pci_device_id *id);
 260 static void  __devexit prism2sta_remove_pci(struct pci_dev *pdev);
 261
 262 static struct pci_driver prism2_pci_drv_id = {
 263         .name = "prism2_pci",
 264         .id_table = pci_id_tbl,
 265         .probe = prism2sta_probe_pci,
 266         .remove = prism2sta_remove_pci,
 267 #ifdef CONFIG_PM
 268         .suspend = prism2sta_suspend_pci,
 269         .resume = prism2sta_resume_pci,
 270 #endif
 271 };
 272
 273 #ifdef MODULE
 274
 275 static int __init prism2pci_init(void)
 276 {
 277         WLAN_LOG_NOTICE("%s Loaded\n", version);
 278         return pci_module_init(&prism2_pci_drv_id);
 279 };
 280
 281 static void __exit prism2pci_cleanup(void)
 282 {
 283         pci_unregister_driver(&prism2_pci_drv_id);
 284 };
 285
 286 module_init(prism2pci_init);
 287 module_exit(prism2pci_cleanup);
 288
 289 #endif
 290
 291 int hfa384x_corereset(hfa384x_t *hw, int holdtime, int settletime, int genesis)
 292 {
 293         int             result = 0;
 294         unsigned long   timeout;
 295         UINT16  reg;
 296         DBFENTER;
 297
 298         /* Assert reset and wait awhile
 299          * (note: these delays are _really_ long, but they appear to be
 300          *        necessary.)
 301          */
 302         hfa384x_setreg(hw, 0xc5, HFA384x_PCICOR);
 303         timeout = jiffies + HZ/4;
 304         while(time_before(jiffies, timeout)) udelay(5);
 305
 306         if (genesis) {
 307                 hfa384x_setreg(hw, genesis, HFA384x_PCIHCR);
 308                 timeout = jiffies + HZ/4;
 309                 while(time_before(jiffies, timeout)) udelay(5);
 310         }
 311
 312         /* Clear the reset and wait some more
 313          */
 314         hfa384x_setreg(hw, 0x45, HFA384x_PCICOR);
 315         timeout = jiffies + HZ/2;
 316         while(time_before(jiffies, timeout)) udelay(5);
 317
 318         /* Wait for f/w to complete initialization (CMD:BUSY == 0)
 319          */
 320         timeout = jiffies + 2*HZ;
 321         reg = hfa384x_getreg(hw, HFA384x_CMD);
 322         while ( HFA384x_CMD_ISBUSY(reg) && time_before( jiffies, timeout) ) {
 323                 reg = hfa384x_getreg(hw, HFA384x_CMD);
 324                 udelay(10);
 325         }
 326         if (HFA384x_CMD_ISBUSY(reg)) {
 327                 WLAN_LOG_WARNING("corereset: Timed out waiting for cmd register.\n");
 328                 result=1;
 329         }
 330         DBFEXIT;
 331         return result;
 332 }