drivers/net/wireless/hostap/hostap_plx.c

   1 #define PRISM2_PLX
   2
   3 /* Host AP driver's support for PC Cards on PCI adapters using PLX9052 is
   4  * based on:
   5  * - Host AP driver patch from james@madingley.org
   6  * - linux-wlan-ng driver, Copyright (C) AbsoluteValue Systems, Inc.
   7  */
   8
   9
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/if.h>
  13 #include <linux/skbuff.h>
  14 #include <linux/netdevice.h>
  15 #include <linux/workqueue.h>
  16 #include <linux/wireless.h>
  17 #include <net/iw_handler.h>
  18
  19 #include <linux/ioport.h>
  20 #include <linux/pci.h>
  21 #include <asm/io.h>
  22
  23 #include "hostap_wlan.h"
  24
  25
  26 static char *dev_info = "hostap_plx";
  27
  28
  29 MODULE_AUTHOR("Jouni Malinen");
  30 MODULE_DESCRIPTION("Support for Intersil Prism2-based 802.11 wireless LAN "
  31                    "cards (PLX).");
  32 MODULE_SUPPORTED_DEVICE("Intersil Prism2-based WLAN cards (PLX)");
  33 MODULE_LICENSE("GPL");
  34
  35
  36 static int ignore_cis;
  37 module_param(ignore_cis, int, 0444);
  38 MODULE_PARM_DESC(ignore_cis, "Do not verify manfid information in CIS");
  39
  40
  41 /* struct local_info::hw_priv */
  42 struct hostap_plx_priv {
  43         void __iomem *attr_mem;
  44         unsigned int cor_offset;
  45 };
  46
  47
  48 #define PLX_MIN_ATTR_LEN 512    /* at least 2 x 256 is needed for CIS */
  49 #define COR_SRESET       0x80
  50 #define COR_LEVLREQ      0x40
  51 #define COR_ENABLE_FUNC  0x01
  52 /* PCI Configuration Registers */
  53 #define PLX_PCIIPR       0x3d   /* PCI Interrupt Pin */
  54 /* Local Configuration Registers */
  55 #define PLX_INTCSR       0x4c   /* Interrupt Control/Status Register */
  56 #define PLX_INTCSR_PCI_INTEN BIT(6) /* PCI Interrupt Enable */
  57 #define PLX_CNTRL        0x50
  58 #define PLX_CNTRL_SERIAL_EEPROM_PRESENT BIT(28)
  59
  60
  61 #define PLXDEV(vendor,dev,str) { vendor, dev, PCI_ANY_ID, PCI_ANY_ID }
  62
  63 static struct pci_device_id prism2_plx_id_table[] __devinitdata = {
  64         PLXDEV(0x10b7, 0x7770, "3Com AirConnect PCI 777A"),
  65         PLXDEV(0x111a, 0x1023, "Siemens SpeedStream SS1023"),
  66         PLXDEV(0x126c, 0x8030, "Nortel emobility"),
  67         PLXDEV(0x1562, 0x0001, "Symbol LA-4123"),
  68         PLXDEV(0x1385, 0x4100, "Netgear MA301"),
  69         PLXDEV(0x15e8, 0x0130, "National Datacomm NCP130 (PLX9052)"),
  70         PLXDEV(0x15e8, 0x0131, "National Datacomm NCP130 (TMD7160)"),
  71         PLXDEV(0x1638, 0x1100, "Eumitcom WL11000"),
  72         PLXDEV(0x16ab, 0x1100, "Global Sun Tech GL24110P"),
  73         PLXDEV(0x16ab, 0x1101, "Global Sun Tech GL24110P (?)"),
  74         PLXDEV(0x16ab, 0x1102, "Linksys WPC11 with WDT11"),
  75         PLXDEV(0x16ab, 0x1103, "Longshine 8031"),
  76         PLXDEV(0x16ec, 0x3685, "US Robotics USR2415"),
  77         PLXDEV(0xec80, 0xec00, "Belkin F5D6000"),
  78         { 0 }
  79 };
  80
  81
  82 /* Array of known Prism2/2.5 PC Card manufactured ids. If your card's manfid
  83  * is not listed here, you will need to add it here to get the driver
  84  * initialized. */
  85 static struct prism2_plx_manfid {
  86         u16 manfid1, manfid2;
  87 } prism2_plx_known_manfids[] = {
  88         { 0x000b, 0x7110 } /* D-Link DWL-650 Rev. P1 */,
  89         { 0x000b, 0x7300 } /* Philips 802.11b WLAN PCMCIA */,
  90         { 0x0101, 0x0777 } /* 3Com AirConnect PCI 777A */,
  91         { 0x0126, 0x8000 } /* Proxim RangeLAN */,
  92         { 0x0138, 0x0002 } /* Compaq WL100 */,
  93         { 0x0156, 0x0002 } /* Intersil Prism II Ref. Design (and others) */,
  94         { 0x026f, 0x030b } /* Buffalo WLI-CF-S11G */,
  95         { 0x0274, 0x1612 } /* Linksys WPC11 Ver 2.5 */,
  96         { 0x0274, 0x1613 } /* Linksys WPC11 Ver 3 */,
  97         { 0x028a, 0x0002 } /* D-Link DRC-650 */,
  98         { 0x0250, 0x0002 } /* Samsung SWL2000-N */,
  99         { 0xc250, 0x0002 } /* EMTAC A2424i */,
 100         { 0xd601, 0x0002 } /* Z-Com XI300 */,
 101         { 0xd601, 0x0005 } /* Zcomax XI-325H 200mW */,
 102         { 0, 0}
 103 };
 104
 105
 106 #ifdef PRISM2_IO_DEBUG
 107
 108 static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
 109 {
 110         struct hostap_interface *iface;
 111         local_info_t *local;
 112         unsigned long flags;
 113
 114         iface = netdev_priv(dev);
 115         local = iface->local;
 116
 117         spin_lock_irqsave(&local->lock, flags);
 118         prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
 119         outb(v, dev->base_addr + a);
 120         spin_unlock_irqrestore(&local->lock, flags);
 121 }
 122
 123 static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
 124 {
 125         struct hostap_interface *iface;
 126         local_info_t *local;
 127         unsigned long flags;
 128         u8 v;
 129
 130         iface = netdev_priv(dev);
 131         local = iface->local;
 132
 133         spin_lock_irqsave(&local->lock, flags);
 134         v = inb(dev->base_addr + a);
 135         prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v);
 136         spin_unlock_irqrestore(&local->lock, flags);
 137         return v;
 138 }
 139
 140 static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
 141 {
 142         struct hostap_interface *iface;
 143         local_info_t *local;
 144         unsigned long flags;
 145
 146         iface = netdev_priv(dev);
 147         local = iface->local;
 148
 149         spin_lock_irqsave(&local->lock, flags);
 150         prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
 151         outw(v, dev->base_addr + a);
 152         spin_unlock_irqrestore(&local->lock, flags);
 153 }
 154
 155 static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
 156 {
 157         struct hostap_interface *iface;
 158         local_info_t *local;
 159         unsigned long flags;
 160         u16 v;
 161
 162         iface = netdev_priv(dev);
 163         local = iface->local;
 164
 165         spin_lock_irqsave(&local->lock, flags);
 166         v = inw(dev->base_addr + a);
 167         prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
 168         spin_unlock_irqrestore(&local->lock, flags);
 169         return v;
 170 }
 171
 172 static inline void hfa384x_outsw_debug(struct net_device *dev, int a,
 173                                        u8 *buf, int wc)
 174 {
 175         struct hostap_interface *iface;
 176         local_info_t *local;
 177         unsigned long flags;
 178
 179         iface = netdev_priv(dev);
 180         local = iface->local;
 181
 182         spin_lock_irqsave(&local->lock, flags);
 183         prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTSW, a, wc);
 184         outsw(dev->base_addr + a, buf, wc);
 185         spin_unlock_irqrestore(&local->lock, flags);
 186 }
 187
 188 static inline void hfa384x_insw_debug(struct net_device *dev, int a,
 189                                       u8 *buf, int wc)
 190 {
 191         struct hostap_interface *iface;
 192         local_info_t *local;
 193         unsigned long flags;
 194
 195         iface = netdev_priv(dev);
 196         local = iface->local;
 197
 198         spin_lock_irqsave(&local->lock, flags);
 199         prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INSW, a, wc);
 200         insw(dev->base_addr + a, buf, wc);
 201         spin_unlock_irqrestore(&local->lock, flags);
 202 }
 203
 204 #define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
 205 #define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
 206 #define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
 207 #define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
 208 #define HFA384X_OUTSW(a, buf, wc) hfa384x_outsw_debug(dev, (a), (buf), (wc))
 209 #define HFA384X_INSW(a, buf, wc) hfa384x_insw_debug(dev, (a), (buf), (wc))
 210
 211 #else /* PRISM2_IO_DEBUG */
 212
 213 #define HFA384X_OUTB(v,a) outb((v), dev->base_addr + (a))
 214 #define HFA384X_INB(a) inb(dev->base_addr + (a))
 215 #define HFA384X_OUTW(v,a) outw((v), dev->base_addr + (a))
 216 #define HFA384X_INW(a) inw(dev->base_addr + (a))
 217 #define HFA384X_INSW(a, buf, wc) insw(dev->base_addr + (a), buf, wc)
 218 #define HFA384X_OUTSW(a, buf, wc) outsw(dev->base_addr + (a), buf, wc)
 219
 220 #endif /* PRISM2_IO_DEBUG */
 221
 222
 223 static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
 224                             int len)
 225 {
 226         u16 d_off;
 227         u16 *pos;
 228
 229         d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
 230         pos = (u16 *) buf;
 231
 232         if (len / 2)
 233                 HFA384X_INSW(d_off, buf, len / 2);
 234         pos += len / 2;
 235
 236         if (len & 1)
 237                 *((char *) pos) = HFA384X_INB(d_off);
 238
 239         return 0;
 240 }
 241
 242
 243 static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
 244 {
 245         u16 d_off;
 246         u16 *pos;
 247
 248         d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
 249         pos = (u16 *) buf;
 250
 251         if (len / 2)
 252                 HFA384X_OUTSW(d_off, buf, len / 2);
 253         pos += len / 2;
 254
 255         if (len & 1)
 256                 HFA384X_OUTB(*((char *) pos), d_off);
 257
 258         return 0;
 259 }
 260
 261
 262 /* FIX: This might change at some point.. */
 263 #include "hostap_hw.c"
 264
 265
 266 static void prism2_plx_cor_sreset(local_info_t *local)
 267 {
 268         unsigned char corsave;
 269         struct hostap_plx_priv *hw_priv = local->hw_priv;
 270
 271         printk(KERN_DEBUG "%s: Doing reset via direct COR access.\n",
 272                dev_info);
 273
 274         /* Set sreset bit of COR and clear it after hold time */
 275
 276         if (hw_priv->attr_mem == NULL) {
 277                 /* TMD7160 - COR at card's first I/O addr */
 278                 corsave = inb(hw_priv->cor_offset);
 279                 outb(corsave | COR_SRESET, hw_priv->cor_offset);
 280                 mdelay(2);
 281                 outb(corsave & ~COR_SRESET, hw_priv->cor_offset);
 282                 mdelay(2);
 283         } else {
 284                 /* PLX9052 */
 285                 corsave = readb(hw_priv->attr_mem + hw_priv->cor_offset);
 286                 writeb(corsave | COR_SRESET,
 287                        hw_priv->attr_mem + hw_priv->cor_offset);
 288                 mdelay(2);
 289                 writeb(corsave & ~COR_SRESET,
 290                        hw_priv->attr_mem + hw_priv->cor_offset);
 291                 mdelay(2);
 292         }
 293 }
 294
 295
 296 static void prism2_plx_genesis_reset(local_info_t *local, int hcr)
 297 {
 298         unsigned char corsave;
 299         struct hostap_plx_priv *hw_priv = local->hw_priv;
 300
 301         if (hw_priv->attr_mem == NULL) {
 302                 /* TMD7160 - COR at card's first I/O addr */
 303                 corsave = inb(hw_priv->cor_offset);
 304                 outb(corsave | COR_SRESET, hw_priv->cor_offset);
 305                 mdelay(10);
 306                 outb(hcr, hw_priv->cor_offset + 2);
 307                 mdelay(10);
 308                 outb(corsave & ~COR_SRESET, hw_priv->cor_offset);
 309                 mdelay(10);
 310         } else {
 311                 /* PLX9052 */
 312                 corsave = readb(hw_priv->attr_mem + hw_priv->cor_offset);
 313                 writeb(corsave | COR_SRESET,
 314                        hw_priv->attr_mem + hw_priv->cor_offset);
 315                 mdelay(10);
 316                 writeb(hcr, hw_priv->attr_mem + hw_priv->cor_offset + 2);
 317                 mdelay(10);
 318                 writeb(corsave & ~COR_SRESET,
 319                        hw_priv->attr_mem + hw_priv->cor_offset);
 320                 mdelay(10);
 321         }
 322 }
 323
 324
 325 static struct prism2_helper_functions prism2_plx_funcs =
 326 {
 327         .card_present   = NULL,
 328         .cor_sreset     = prism2_plx_cor_sreset,
 329         .genesis_reset  = prism2_plx_genesis_reset,
 330         .hw_type        = HOSTAP_HW_PLX,
 331 };
 332
 333
 334 static int prism2_plx_check_cis(void __iomem *attr_mem, int attr_len,
 335                                 unsigned int *cor_offset,
 336                                 unsigned int *cor_index)
 337 {
 338 #define CISTPL_CONFIG 0x1A
 339 #define CISTPL_MANFID 0x20
 340 #define CISTPL_END 0xFF
 341 #define CIS_MAX_LEN 256
 342         u8 *cis;
 343         int i, pos;
 344         unsigned int rmsz, rasz, manfid1, manfid2;
 345         struct prism2_plx_manfid *manfid;
 346
 347         cis = kmalloc(CIS_MAX_LEN, GFP_KERNEL);
 348         if (cis == NULL)
 349                 return -ENOMEM;
 350
 351         /* read CIS; it is in even offsets in the beginning of attr_mem */
 352         for (i = 0; i < CIS_MAX_LEN; i++)
 353                 cis[i] = readb(attr_mem + 2 * i);
 354         printk(KERN_DEBUG "%s: CIS: %02x %02x %02x %02x %02x %02x ...\n",
 355                dev_info, cis[0], cis[1], cis[2], cis[3], cis[4], cis[5]);
 356
 357         /* set reasonable defaults for Prism2 cards just in case CIS parsing
 358          * fails */
 359         *cor_offset = 0x3e0;
 360         *cor_index = 0x01;
 361         manfid1 = manfid2 = 0;
 362
 363         pos = 0;
 364         while (pos < CIS_MAX_LEN - 1 && cis[pos] != CISTPL_END) {
 365                 if (pos + 2 + cis[pos + 1] > CIS_MAX_LEN)
 366                         goto cis_error;
 367
 368                 switch (cis[pos]) {
 369                 case CISTPL_CONFIG:
 370                         if (cis[pos + 1] < 2)
 371                                 goto cis_error;
 372                         rmsz = (cis[pos + 2] & 0x3c) >> 2;
 373                         rasz = cis[pos + 2] & 0x03;
 374                         if (4 + rasz + rmsz > cis[pos + 1])
 375                                 goto cis_error;
 376                         *cor_index = cis[pos + 3] & 0x3F;
 377                         *cor_offset = 0;
 378                         for (i = 0; i <= rasz; i++)
 379                                 *cor_offset += cis[pos + 4 + i] << (8 * i);
 380                         printk(KERN_DEBUG "%s: cor_index=0x%x "
 381                                "cor_offset=0x%x\n", dev_info,
 382                                *cor_index, *cor_offset);
 383                         if (*cor_offset > attr_len) {
 384                                 printk(KERN_ERR "%s: COR offset not within "
 385                                        "attr_mem\n", dev_info);
 386                                 kfree(cis);
 387                                 return -1;
 388                         }
 389                         break;
 390
 391                 case CISTPL_MANFID:
 392                         if (cis[pos + 1] < 4)
 393                                 goto cis_error;
 394                         manfid1 = cis[pos + 2] + (cis[pos + 3] << 8);
 395                         manfid2 = cis[pos + 4] + (cis[pos + 5] << 8);
 396                         printk(KERN_DEBUG "%s: manfid=0x%04x, 0x%04x\n",
 397                                dev_info, manfid1, manfid2);
 398                         break;
 399                 }
 400
 401                 pos += cis[pos + 1] + 2;
 402         }
 403
 404         if (pos >= CIS_MAX_LEN || cis[pos] != CISTPL_END)
 405                 goto cis_error;
 406
 407         for (manfid = prism2_plx_known_manfids; manfid->manfid1 != 0; manfid++)
 408                 if (manfid1 == manfid->manfid1 && manfid2 == manfid->manfid2) {
 409                         kfree(cis);
 410                         return 0;
 411                 }
 412
 413         printk(KERN_INFO "%s: unknown manfid 0x%04x, 0x%04x - assuming this is"
 414                " not supported card\n", dev_info, manfid1, manfid2);
 415         goto fail;
 416
 417  cis_error:
 418         printk(KERN_WARNING "%s: invalid CIS data\n", dev_info);
 419
 420  fail:
 421         kfree(cis);
 422         if (ignore_cis) {
 423                 printk(KERN_INFO "%s: ignore_cis parameter set - ignoring "
 424                        "errors during CIS verification\n", dev_info);
 425                 return 0;
 426         }
 427         return -1;
 428 }
 429
 430
 431 static int prism2_plx_probe(struct pci_dev *pdev,
 432                             const struct pci_device_id *id)
 433 {
 434         unsigned int pccard_ioaddr, plx_ioaddr;
 435         unsigned long pccard_attr_mem;
 436         unsigned int pccard_attr_len;
 437         void __iomem *attr_mem = NULL;
 438         unsigned int cor_offset, cor_index;
 439         u32 reg;
 440         local_info_t *local = NULL;
 441         struct net_device *dev = NULL;
 442         struct hostap_interface *iface;
 443         static int cards_found /* = 0 */;
 444         int irq_registered = 0;
 445         int tmd7160;
 446         struct hostap_plx_priv *hw_priv;
 447
 448         hw_priv = kzalloc(sizeof(*hw_priv), GFP_KERNEL);
 449         if (hw_priv == NULL)
 450                 return -ENOMEM;
 451
 452         if (pci_enable_device(pdev))
 453                 goto err_out_free;
 454
 455         /* National Datacomm NCP130 based on TMD7160, not PLX9052. */
 456         tmd7160 = (pdev->vendor == 0x15e8) && (pdev->device == 0x0131);
 457
 458         plx_ioaddr = pci_resource_start(pdev, 1);
 459         pccard_ioaddr = pci_resource_start(pdev, tmd7160 ? 2 : 3);
 460
 461         if (tmd7160) {
 462                 /* TMD7160 */
 463                 attr_mem = NULL; /* no access to PC Card attribute memory */
 464
 465                 printk(KERN_INFO "TMD7160 PCI/PCMCIA adapter: io=0x%x, "
 466                        "irq=%d, pccard_io=0x%x\n",
 467                        plx_ioaddr, pdev->irq, pccard_ioaddr);
 468
 469                 cor_offset = plx_ioaddr;
 470                 cor_index = 0x04;
 471
 472                 outb(cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, plx_ioaddr);
 473                 mdelay(1);
 474                 reg = inb(plx_ioaddr);
 475                 if (reg != (cor_index | COR_LEVLREQ | COR_ENABLE_FUNC)) {
 476                         printk(KERN_ERR "%s: Error setting COR (expected="
 477                                "0x%02x, was=0x%02x)\n", dev_info,
 478                                cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, reg);
 479                         goto fail;
 480                 }
 481         } else {
 482                 /* PLX9052 */
 483                 pccard_attr_mem = pci_resource_start(pdev, 2);
 484                 pccard_attr_len = pci_resource_len(pdev, 2);
 485                 if (pccard_attr_len < PLX_MIN_ATTR_LEN)
 486                         goto fail;
 487
 488
 489                 attr_mem = ioremap(pccard_attr_mem, pccard_attr_len);
 490                 if (attr_mem == NULL) {
 491                         printk(KERN_ERR "%s: cannot remap attr_mem\n",
 492                                dev_info);
 493                         goto fail;
 494                 }
 495
 496                 printk(KERN_INFO "PLX9052 PCI/PCMCIA adapter: "
 497                        "mem=0x%lx, plx_io=0x%x, irq=%d, pccard_io=0x%x\n",
 498                        pccard_attr_mem, plx_ioaddr, pdev->irq, pccard_ioaddr);
 499
 500                 if (prism2_plx_check_cis(attr_mem, pccard_attr_len,
 501                                          &cor_offset, &cor_index)) {
 502                         printk(KERN_INFO "Unknown PC Card CIS - not a "
 503                                "Prism2/2.5 card?\n");
 504                         goto fail;
 505                 }
 506
 507                 printk(KERN_DEBUG "Prism2/2.5 PC Card detected in PLX9052 "
 508                        "adapter\n");
 509
 510                 /* Write COR to enable PC Card */
 511                 writeb(cor_index | COR_LEVLREQ | COR_ENABLE_FUNC,
 512                        attr_mem + cor_offset);
 513
 514                 /* Enable PCI interrupts if they are not already enabled */
 515                 reg = inl(plx_ioaddr + PLX_INTCSR);
 516                 printk(KERN_DEBUG "PLX_INTCSR=0x%x\n", reg);
 517                 if (!(reg & PLX_INTCSR_PCI_INTEN)) {
 518                         outl(reg | PLX_INTCSR_PCI_INTEN,
 519                              plx_ioaddr + PLX_INTCSR);
 520                         if (!(inl(plx_ioaddr + PLX_INTCSR) &
 521                               PLX_INTCSR_PCI_INTEN)) {
 522                                 printk(KERN_WARNING "%s: Could not enable "
 523                                        "Local Interrupts\n", dev_info);
 524                                 goto fail;
 525                         }
 526                 }
 527
 528                 reg = inl(plx_ioaddr + PLX_CNTRL);
 529                 printk(KERN_DEBUG "PLX_CNTRL=0x%x (Serial EEPROM "
 530                        "present=%d)\n",
 531                        reg, (reg & PLX_CNTRL_SERIAL_EEPROM_PRESENT) != 0);
 532                 /* should set PLX_PCIIPR to 0x01 (INTA#) if Serial EEPROM is
 533                  * not present; but are there really such cards in use(?) */
 534         }
 535
 536         dev = prism2_init_local_data(&prism2_plx_funcs, cards_found,
 537                                      &pdev->dev);
 538         if (dev == NULL)
 539                 goto fail;
 540         iface = netdev_priv(dev);
 541         local = iface->local;
 542         local->hw_priv = hw_priv;
 543         cards_found++;
 544
 545         dev->irq = pdev->irq;
 546         dev->base_addr = pccard_ioaddr;
 547         hw_priv->attr_mem = attr_mem;
 548         hw_priv->cor_offset = cor_offset;
 549
 550         pci_set_drvdata(pdev, dev);
 551
 552         if (request_irq(dev->irq, prism2_interrupt, IRQF_SHARED, dev->name,
 553                         dev)) {
 554                 printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
 555                 goto fail;
 556         } else
 557                 irq_registered = 1;
 558
 559         if (prism2_hw_config(dev, 1)) {
 560                 printk(KERN_DEBUG "%s: hardware initialization failed\n",
 561                        dev_info);
 562                 goto fail;
 563         }
 564
 565         return hostap_hw_ready(dev);
 566
 567  fail:
 568         if (irq_registered && dev)
 569                 free_irq(dev->irq, dev);
 570
 571         if (attr_mem)
 572                 iounmap(attr_mem);
 573
 574         pci_disable_device(pdev);
 575         prism2_free_local_data(dev);
 576
 577  err_out_free:
 578         kfree(hw_priv);
 579
 580         return -ENODEV;
 581 }
 582
 583
 584 static void prism2_plx_remove(struct pci_dev *pdev)
 585 {
 586         struct net_device *dev;
 587         struct hostap_interface *iface;
 588         struct hostap_plx_priv *hw_priv;
 589
 590         dev = pci_get_drvdata(pdev);
 591         iface = netdev_priv(dev);
 592         hw_priv = iface->local->hw_priv;
 593
 594         /* Reset the hardware, and ensure interrupts are disabled. */
 595         prism2_plx_cor_sreset(iface->local);
 596         hfa384x_disable_interrupts(dev);
 597
 598         if (hw_priv->attr_mem)
 599                 iounmap(hw_priv->attr_mem);
 600         if (dev->irq)
 601                 free_irq(dev->irq, dev);
 602
 603         prism2_free_local_data(dev);
 604         kfree(hw_priv);
 605         pci_disable_device(pdev);
 606 }
 607
 608
 609 MODULE_DEVICE_TABLE(pci, prism2_plx_id_table);
 610
 611 static struct pci_driver prism2_plx_driver = {
 612         .name           = "hostap_plx",
 613         .id_table       = prism2_plx_id_table,
 614         .probe          = prism2_plx_probe,
 615         .remove         = prism2_plx_remove,
 616 };
 617
 618
 619 static int __init init_prism2_plx(void)
 620 {
 621         return pci_register_driver(&prism2_plx_driver);
 622 }
 623
 624
 625 static void __exit exit_prism2_plx(void)
 626 {
 627         pci_unregister_driver(&prism2_plx_driver);
 628 }
 629
 630
 631 module_init(init_prism2_plx);
 632 module_exit(exit_prism2_plx);