hostap_plx.c (16440B)
1// SPDX-License-Identifier: GPL-2.0-only 2#define PRISM2_PLX 3 4/* Host AP driver's support for PC Cards on PCI adapters using PLX9052 is 5 * based on: 6 * - Host AP driver patch from james@madingley.org 7 * - linux-wlan-ng driver, Copyright (C) AbsoluteValue Systems, Inc. 8 */ 9 10 11#include <linux/module.h> 12#include <linux/if.h> 13#include <linux/skbuff.h> 14#include <linux/netdevice.h> 15#include <linux/slab.h> 16#include <linux/workqueue.h> 17#include <linux/wireless.h> 18#include <net/iw_handler.h> 19 20#include <linux/ioport.h> 21#include <linux/pci.h> 22#include <asm/io.h> 23 24#include "hostap_wlan.h" 25 26 27static char *dev_info = "hostap_plx"; 28 29 30MODULE_AUTHOR("Jouni Malinen"); 31MODULE_DESCRIPTION("Support for Intersil Prism2-based 802.11 wireless LAN " 32 "cards (PLX)."); 33MODULE_LICENSE("GPL"); 34 35 36static int ignore_cis; 37module_param(ignore_cis, int, 0444); 38MODULE_PARM_DESC(ignore_cis, "Do not verify manfid information in CIS"); 39 40 41/* struct local_info::hw_priv */ 42struct 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 63static const struct pci_device_id prism2_plx_id_table[] = { 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. */ 85static 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 108static 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 123static 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 140static 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 155static 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 172static 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 188static 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 223static 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 243static 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 266static 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 296static 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 325static 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 334static 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: %6ph ...\n", dev_info, cis); 355 356 /* set reasonable defaults for Prism2 cards just in case CIS parsing 357 * fails */ 358 *cor_offset = 0x3e0; 359 *cor_index = 0x01; 360 manfid1 = manfid2 = 0; 361 362 pos = 0; 363 while (pos < CIS_MAX_LEN - 1 && cis[pos] != CISTPL_END) { 364 if (pos + 2 + cis[pos + 1] > CIS_MAX_LEN) 365 goto cis_error; 366 367 switch (cis[pos]) { 368 case CISTPL_CONFIG: 369 if (cis[pos + 1] < 2) 370 goto cis_error; 371 rmsz = (cis[pos + 2] & 0x3c) >> 2; 372 rasz = cis[pos + 2] & 0x03; 373 if (4 + rasz + rmsz > cis[pos + 1]) 374 goto cis_error; 375 *cor_index = cis[pos + 3] & 0x3F; 376 *cor_offset = 0; 377 for (i = 0; i <= rasz; i++) 378 *cor_offset += cis[pos + 4 + i] << (8 * i); 379 printk(KERN_DEBUG "%s: cor_index=0x%x " 380 "cor_offset=0x%x\n", dev_info, 381 *cor_index, *cor_offset); 382 if (*cor_offset > attr_len) { 383 printk(KERN_ERR "%s: COR offset not within " 384 "attr_mem\n", dev_info); 385 kfree(cis); 386 return -1; 387 } 388 break; 389 390 case CISTPL_MANFID: 391 if (cis[pos + 1] < 4) 392 goto cis_error; 393 manfid1 = cis[pos + 2] + (cis[pos + 3] << 8); 394 manfid2 = cis[pos + 4] + (cis[pos + 5] << 8); 395 printk(KERN_DEBUG "%s: manfid=0x%04x, 0x%04x\n", 396 dev_info, manfid1, manfid2); 397 break; 398 } 399 400 pos += cis[pos + 1] + 2; 401 } 402 403 if (pos >= CIS_MAX_LEN || cis[pos] != CISTPL_END) 404 goto cis_error; 405 406 for (manfid = prism2_plx_known_manfids; manfid->manfid1 != 0; manfid++) 407 if (manfid1 == manfid->manfid1 && manfid2 == manfid->manfid2) { 408 kfree(cis); 409 return 0; 410 } 411 412 printk(KERN_INFO "%s: unknown manfid 0x%04x, 0x%04x - assuming this is" 413 " not supported card\n", dev_info, manfid1, manfid2); 414 goto fail; 415 416 cis_error: 417 printk(KERN_WARNING "%s: invalid CIS data\n", dev_info); 418 419 fail: 420 kfree(cis); 421 if (ignore_cis) { 422 printk(KERN_INFO "%s: ignore_cis parameter set - ignoring " 423 "errors during CIS verification\n", dev_info); 424 return 0; 425 } 426 return -1; 427} 428 429 430static int prism2_plx_probe(struct pci_dev *pdev, 431 const struct pci_device_id *id) 432{ 433 unsigned int pccard_ioaddr, plx_ioaddr; 434 unsigned long pccard_attr_mem; 435 unsigned int pccard_attr_len; 436 void __iomem *attr_mem = NULL; 437 unsigned int cor_offset = 0, cor_index = 0; 438 u32 reg; 439 local_info_t *local = NULL; 440 struct net_device *dev = NULL; 441 struct hostap_interface *iface; 442 static int cards_found /* = 0 */; 443 int irq_registered = 0; 444 int tmd7160; 445 struct hostap_plx_priv *hw_priv; 446 447 hw_priv = kzalloc(sizeof(*hw_priv), GFP_KERNEL); 448 if (hw_priv == NULL) 449 return -ENOMEM; 450 451 if (pci_enable_device(pdev)) 452 goto err_out_free; 453 454 /* National Datacomm NCP130 based on TMD7160, not PLX9052. */ 455 tmd7160 = (pdev->vendor == 0x15e8) && (pdev->device == 0x0131); 456 457 plx_ioaddr = pci_resource_start(pdev, 1); 458 pccard_ioaddr = pci_resource_start(pdev, tmd7160 ? 2 : 3); 459 460 if (tmd7160) { 461 /* TMD7160 */ 462 attr_mem = NULL; /* no access to PC Card attribute memory */ 463 464 printk(KERN_INFO "TMD7160 PCI/PCMCIA adapter: io=0x%x, " 465 "irq=%d, pccard_io=0x%x\n", 466 plx_ioaddr, pdev->irq, pccard_ioaddr); 467 468 cor_offset = plx_ioaddr; 469 cor_index = 0x04; 470 471 outb(cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, plx_ioaddr); 472 mdelay(1); 473 reg = inb(plx_ioaddr); 474 if (reg != (cor_index | COR_LEVLREQ | COR_ENABLE_FUNC)) { 475 printk(KERN_ERR "%s: Error setting COR (expected=" 476 "0x%02x, was=0x%02x)\n", dev_info, 477 cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, reg); 478 goto fail; 479 } 480 } else { 481 /* PLX9052 */ 482 pccard_attr_mem = pci_resource_start(pdev, 2); 483 pccard_attr_len = pci_resource_len(pdev, 2); 484 if (pccard_attr_len < PLX_MIN_ATTR_LEN) 485 goto fail; 486 487 488 attr_mem = ioremap(pccard_attr_mem, pccard_attr_len); 489 if (attr_mem == NULL) { 490 printk(KERN_ERR "%s: cannot remap attr_mem\n", 491 dev_info); 492 goto fail; 493 } 494 495 printk(KERN_INFO "PLX9052 PCI/PCMCIA adapter: " 496 "mem=0x%lx, plx_io=0x%x, irq=%d, pccard_io=0x%x\n", 497 pccard_attr_mem, plx_ioaddr, pdev->irq, pccard_ioaddr); 498 499 if (prism2_plx_check_cis(attr_mem, pccard_attr_len, 500 &cor_offset, &cor_index)) { 501 printk(KERN_INFO "Unknown PC Card CIS - not a " 502 "Prism2/2.5 card?\n"); 503 goto fail; 504 } 505 506 printk(KERN_DEBUG "Prism2/2.5 PC Card detected in PLX9052 " 507 "adapter\n"); 508 509 /* Write COR to enable PC Card */ 510 writeb(cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, 511 attr_mem + cor_offset); 512 513 /* Enable PCI interrupts if they are not already enabled */ 514 reg = inl(plx_ioaddr + PLX_INTCSR); 515 printk(KERN_DEBUG "PLX_INTCSR=0x%x\n", reg); 516 if (!(reg & PLX_INTCSR_PCI_INTEN)) { 517 outl(reg | PLX_INTCSR_PCI_INTEN, 518 plx_ioaddr + PLX_INTCSR); 519 if (!(inl(plx_ioaddr + PLX_INTCSR) & 520 PLX_INTCSR_PCI_INTEN)) { 521 printk(KERN_WARNING "%s: Could not enable " 522 "Local Interrupts\n", dev_info); 523 goto fail; 524 } 525 } 526 527 reg = inl(plx_ioaddr + PLX_CNTRL); 528 printk(KERN_DEBUG "PLX_CNTRL=0x%x (Serial EEPROM " 529 "present=%d)\n", 530 reg, (reg & PLX_CNTRL_SERIAL_EEPROM_PRESENT) != 0); 531 /* should set PLX_PCIIPR to 0x01 (INTA#) if Serial EEPROM is 532 * not present; but are there really such cards in use(?) */ 533 } 534 535 dev = prism2_init_local_data(&prism2_plx_funcs, cards_found, 536 &pdev->dev); 537 if (dev == NULL) 538 goto fail; 539 iface = netdev_priv(dev); 540 local = iface->local; 541 local->hw_priv = hw_priv; 542 cards_found++; 543 544 dev->irq = pdev->irq; 545 dev->base_addr = pccard_ioaddr; 546 hw_priv->attr_mem = attr_mem; 547 hw_priv->cor_offset = cor_offset; 548 549 pci_set_drvdata(pdev, dev); 550 551 if (request_irq(dev->irq, prism2_interrupt, IRQF_SHARED, dev->name, 552 dev)) { 553 printk(KERN_WARNING "%s: request_irq failed\n", dev->name); 554 goto fail; 555 } else 556 irq_registered = 1; 557 558 if (prism2_hw_config(dev, 1)) { 559 printk(KERN_DEBUG "%s: hardware initialization failed\n", 560 dev_info); 561 goto fail; 562 } 563 564 return hostap_hw_ready(dev); 565 566 fail: 567 if (irq_registered && dev) 568 free_irq(dev->irq, dev); 569 570 if (attr_mem) 571 iounmap(attr_mem); 572 573 pci_disable_device(pdev); 574 prism2_free_local_data(dev); 575 576 err_out_free: 577 kfree(hw_priv); 578 579 return -ENODEV; 580} 581 582 583static void prism2_plx_remove(struct pci_dev *pdev) 584{ 585 struct net_device *dev; 586 struct hostap_interface *iface; 587 struct hostap_plx_priv *hw_priv; 588 589 dev = pci_get_drvdata(pdev); 590 iface = netdev_priv(dev); 591 hw_priv = iface->local->hw_priv; 592 593 /* Reset the hardware, and ensure interrupts are disabled. */ 594 prism2_plx_cor_sreset(iface->local); 595 hfa384x_disable_interrupts(dev); 596 597 if (hw_priv->attr_mem) 598 iounmap(hw_priv->attr_mem); 599 if (dev->irq) 600 free_irq(dev->irq, dev); 601 602 prism2_free_local_data(dev); 603 kfree(hw_priv); 604 pci_disable_device(pdev); 605} 606 607 608MODULE_DEVICE_TABLE(pci, prism2_plx_id_table); 609 610static struct pci_driver prism2_plx_driver = { 611 .name = "hostap_plx", 612 .id_table = prism2_plx_id_table, 613 .probe = prism2_plx_probe, 614 .remove = prism2_plx_remove, 615}; 616 617module_pci_driver(prism2_plx_driver);