3 /* Host AP driver's support for PC Cards on PCI adapters using PLX9052 is
5 * - Host AP driver patch from james@madingley.org
6 * - linux-wlan-ng driver, Copyright (C) AbsoluteValue Systems, Inc.
10 #include <linux/config.h>
11 #include <linux/version.h>
12 #include <linux/module.h>
13 #include <linux/init.h>
15 #include <linux/skbuff.h>
16 #include <linux/netdevice.h>
17 #include <linux/workqueue.h>
18 #include <linux/wireless.h>
19 #include <net/iw_handler.h>
21 #include <linux/ioport.h>
22 #include <linux/pci.h>
25 #include "hostap_wlan.h"
28 static char *version = PRISM2_VERSION " (Jouni Malinen <jkmaline@cc.hut.fi>)";
29 static char *dev_info = "hostap_plx";
32 MODULE_AUTHOR("Jouni Malinen");
33 MODULE_DESCRIPTION("Support for Intersil Prism2-based 802.11 wireless LAN "
35 MODULE_SUPPORTED_DEVICE("Intersil Prism2-based WLAN cards (PLX)");
36 MODULE_LICENSE("GPL");
37 MODULE_VERSION(PRISM2_VERSION);
40 static int ignore_cis;
41 module_param(ignore_cis, int, 0444);
42 MODULE_PARM_DESC(ignore_cis, "Do not verify manfid information in CIS");
45 #define PLX_MIN_ATTR_LEN 512 /* at least 2 x 256 is needed for CIS */
46 #define COR_SRESET 0x80
47 #define COR_LEVLREQ 0x40
48 #define COR_ENABLE_FUNC 0x01
49 /* PCI Configuration Registers */
50 #define PLX_PCIIPR 0x3d /* PCI Interrupt Pin */
51 /* Local Configuration Registers */
52 #define PLX_INTCSR 0x4c /* Interrupt Control/Status Register */
53 #define PLX_INTCSR_PCI_INTEN BIT(6) /* PCI Interrupt Enable */
54 #define PLX_CNTRL 0x50
55 #define PLX_CNTRL_SERIAL_EEPROM_PRESENT BIT(28)
58 #define PLXDEV(vendor,dev,str) { vendor, dev, PCI_ANY_ID, PCI_ANY_ID }
60 static struct pci_device_id prism2_plx_id_table[] __devinitdata = {
61 PLXDEV(0x10b7, 0x7770, "3Com AirConnect PCI 777A"),
62 PLXDEV(0x111a, 0x1023, "Siemens SpeedStream SS1023"),
63 PLXDEV(0x126c, 0x8030, "Nortel emobility"),
64 PLXDEV(0x1385, 0x4100, "Netgear MA301"),
65 PLXDEV(0x15e8, 0x0130, "National Datacomm NCP130 (PLX9052)"),
66 PLXDEV(0x15e8, 0x0131, "National Datacomm NCP130 (TMD7160)"),
67 PLXDEV(0x1638, 0x1100, "Eumitcom WL11000"),
68 PLXDEV(0x16ab, 0x1101, "Global Sun Tech GL24110P (?)"),
69 PLXDEV(0x16ab, 0x1102, "Linksys WPC11 with WDT11"),
70 PLXDEV(0x16ab, 0x1103, "Longshine 8031"),
71 PLXDEV(0x16ec, 0x3685, "US Robotics USR2415"),
72 PLXDEV(0xec80, 0xec00, "Belkin F5D6000"),
77 /* Array of known Prism2/2.5 PC Card manufactured ids. If your card's manfid
78 * is not listed here, you will need to add it here to get the driver
80 static struct prism2_plx_manfid {
82 } prism2_plx_known_manfids[] = {
83 { 0x000b, 0x7110 } /* D-Link DWL-650 Rev. P1 */,
84 { 0x000b, 0x7300 } /* Philips 802.11b WLAN PCMCIA */,
85 { 0x0101, 0x0777 } /* 3Com AirConnect PCI 777A */,
86 { 0x0126, 0x8000 } /* Proxim RangeLAN */,
87 { 0x0138, 0x0002 } /* Compaq WL100 */,
88 { 0x0156, 0x0002 } /* Intersil Prism II Ref. Design (and others) */,
89 { 0x026f, 0x030b } /* Buffalo WLI-CF-S11G */,
90 { 0x0274, 0x1612 } /* Linksys WPC11 Ver 2.5 */,
91 { 0x0274, 0x1613 } /* Linksys WPC11 Ver 3 */,
92 { 0x028a, 0x0002 } /* D-Link DRC-650 */,
93 { 0x0250, 0x0002 } /* Samsung SWL2000-N */,
94 { 0xc250, 0x0002 } /* EMTAC A2424i */,
95 { 0xd601, 0x0002 } /* Z-Com XI300 */,
96 { 0xd601, 0x0005 } /* Zcomax XI-325H 200mW */,
101 #ifdef PRISM2_IO_DEBUG
103 static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
105 struct hostap_interface *iface;
109 iface = netdev_priv(dev);
110 local = iface->local;
112 spin_lock_irqsave(&local->lock, flags);
113 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
114 outb(v, dev->base_addr + a);
115 spin_unlock_irqrestore(&local->lock, flags);
118 static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
120 struct hostap_interface *iface;
125 iface = netdev_priv(dev);
126 local = iface->local;
128 spin_lock_irqsave(&local->lock, flags);
129 v = inb(dev->base_addr + a);
130 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v);
131 spin_unlock_irqrestore(&local->lock, flags);
135 static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
137 struct hostap_interface *iface;
141 iface = netdev_priv(dev);
142 local = iface->local;
144 spin_lock_irqsave(&local->lock, flags);
145 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
146 outw(v, dev->base_addr + a);
147 spin_unlock_irqrestore(&local->lock, flags);
150 static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
152 struct hostap_interface *iface;
157 iface = netdev_priv(dev);
158 local = iface->local;
160 spin_lock_irqsave(&local->lock, flags);
161 v = inw(dev->base_addr + a);
162 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
163 spin_unlock_irqrestore(&local->lock, flags);
167 static inline void hfa384x_outsw_debug(struct net_device *dev, int a,
170 struct hostap_interface *iface;
174 iface = netdev_priv(dev);
175 local = iface->local;
177 spin_lock_irqsave(&local->lock, flags);
178 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTSW, a, wc);
179 outsw(dev->base_addr + a, buf, wc);
180 spin_unlock_irqrestore(&local->lock, flags);
183 static inline void hfa384x_insw_debug(struct net_device *dev, int a,
186 struct hostap_interface *iface;
190 iface = netdev_priv(dev);
191 local = iface->local;
193 spin_lock_irqsave(&local->lock, flags);
194 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INSW, a, wc);
195 insw(dev->base_addr + a, buf, wc);
196 spin_unlock_irqrestore(&local->lock, flags);
199 #define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
200 #define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
201 #define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
202 #define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
203 #define HFA384X_OUTSW(a, buf, wc) hfa384x_outsw_debug(dev, (a), (buf), (wc))
204 #define HFA384X_INSW(a, buf, wc) hfa384x_insw_debug(dev, (a), (buf), (wc))
206 #else /* PRISM2_IO_DEBUG */
208 #define HFA384X_OUTB(v,a) outb((v), dev->base_addr + (a))
209 #define HFA384X_INB(a) inb(dev->base_addr + (a))
210 #define HFA384X_OUTW(v,a) outw((v), dev->base_addr + (a))
211 #define HFA384X_INW(a) inw(dev->base_addr + (a))
212 #define HFA384X_INSW(a, buf, wc) insw(dev->base_addr + (a), buf, wc)
213 #define HFA384X_OUTSW(a, buf, wc) outsw(dev->base_addr + (a), buf, wc)
215 #endif /* PRISM2_IO_DEBUG */
218 static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
224 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
228 HFA384X_INSW(d_off, buf, len / 2);
232 *((char *) pos) = HFA384X_INB(d_off);
238 static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
243 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
247 HFA384X_OUTSW(d_off, buf, len / 2);
251 HFA384X_OUTB(*((char *) pos), d_off);
257 /* FIX: This might change at some point.. */
258 #include "hostap_hw.c"
261 static void prism2_plx_cor_sreset(local_info_t *local)
263 unsigned char corsave;
265 printk(KERN_DEBUG "%s: Doing reset via direct COR access.\n",
268 /* Set sreset bit of COR and clear it after hold time */
270 if (local->attr_mem == NULL) {
271 /* TMD7160 - COR at card's first I/O addr */
272 corsave = inb(local->cor_offset);
273 outb(corsave | COR_SRESET, local->cor_offset);
275 outb(corsave & ~COR_SRESET, local->cor_offset);
279 corsave = readb(local->attr_mem + local->cor_offset);
280 writeb(corsave | COR_SRESET,
281 local->attr_mem + local->cor_offset);
283 writeb(corsave & ~COR_SRESET,
284 local->attr_mem + local->cor_offset);
290 static void prism2_plx_genesis_reset(local_info_t *local, int hcr)
292 unsigned char corsave;
294 if (local->attr_mem == NULL) {
295 /* TMD7160 - COR at card's first I/O addr */
296 corsave = inb(local->cor_offset);
297 outb(corsave | COR_SRESET, local->cor_offset);
299 outb(hcr, local->cor_offset + 2);
301 outb(corsave & ~COR_SRESET, local->cor_offset);
305 corsave = readb(local->attr_mem + local->cor_offset);
306 writeb(corsave | COR_SRESET,
307 local->attr_mem + local->cor_offset);
309 writeb(hcr, local->attr_mem + local->cor_offset + 2);
311 writeb(corsave & ~COR_SRESET,
312 local->attr_mem + local->cor_offset);
318 static struct prism2_helper_functions prism2_plx_funcs =
320 .card_present = NULL,
321 .cor_sreset = prism2_plx_cor_sreset,
324 .genesis_reset = prism2_plx_genesis_reset,
325 .hw_type = HOSTAP_HW_PLX,
329 static int prism2_plx_check_cis(void __iomem *attr_mem, int attr_len,
330 unsigned int *cor_offset,
331 unsigned int *cor_index)
333 #define CISTPL_CONFIG 0x1A
334 #define CISTPL_MANFID 0x20
335 #define CISTPL_END 0xFF
336 #define CIS_MAX_LEN 256
339 unsigned int rmsz, rasz, manfid1, manfid2;
340 struct prism2_plx_manfid *manfid;
342 cis = kmalloc(CIS_MAX_LEN, GFP_KERNEL);
346 /* read CIS; it is in even offsets in the beginning of attr_mem */
347 for (i = 0; i < CIS_MAX_LEN; i++)
348 cis[i] = readb(attr_mem + 2 * i);
349 printk(KERN_DEBUG "%s: CIS: %02x %02x %02x %02x %02x %02x ...\n",
350 dev_info, cis[0], cis[1], cis[2], cis[3], cis[4], cis[5]);
352 /* set reasonable defaults for Prism2 cards just in case CIS parsing
356 manfid1 = manfid2 = 0;
359 while (pos < CIS_MAX_LEN - 1 && cis[pos] != CISTPL_END) {
360 if (pos + cis[pos + 1] >= CIS_MAX_LEN)
365 if (cis[pos + 1] < 1)
367 rmsz = (cis[pos + 2] & 0x3c) >> 2;
368 rasz = cis[pos + 2] & 0x03;
369 if (4 + rasz + rmsz > cis[pos + 1])
371 *cor_index = cis[pos + 3] & 0x3F;
373 for (i = 0; i <= rasz; i++)
374 *cor_offset += cis[pos + 4 + i] << (8 * i);
375 printk(KERN_DEBUG "%s: cor_index=0x%x "
376 "cor_offset=0x%x\n", dev_info,
377 *cor_index, *cor_offset);
378 if (*cor_offset > attr_len) {
379 printk(KERN_ERR "%s: COR offset not within "
380 "attr_mem\n", dev_info);
387 if (cis[pos + 1] < 4)
389 manfid1 = cis[pos + 2] + (cis[pos + 3] << 8);
390 manfid2 = cis[pos + 4] + (cis[pos + 5] << 8);
391 printk(KERN_DEBUG "%s: manfid=0x%04x, 0x%04x\n",
392 dev_info, manfid1, manfid2);
396 pos += cis[pos + 1] + 2;
399 if (pos >= CIS_MAX_LEN || cis[pos] != CISTPL_END)
402 for (manfid = prism2_plx_known_manfids; manfid->manfid1 != 0; manfid++)
403 if (manfid1 == manfid->manfid1 && manfid2 == manfid->manfid2) {
408 printk(KERN_INFO "%s: unknown manfid 0x%04x, 0x%04x - assuming this is"
409 " not supported card\n", dev_info, manfid1, manfid2);
413 printk(KERN_WARNING "%s: invalid CIS data\n", dev_info);
418 printk(KERN_INFO "%s: ignore_cis parameter set - ignoring "
419 "errors during CIS verification\n", dev_info);
426 static int prism2_plx_probe(struct pci_dev *pdev,
427 const struct pci_device_id *id)
429 unsigned int pccard_ioaddr, plx_ioaddr;
430 unsigned long pccard_attr_mem;
431 unsigned int pccard_attr_len;
432 void __iomem *attr_mem = NULL;
433 unsigned int cor_offset, cor_index;
435 local_info_t *local = NULL;
436 struct net_device *dev = NULL;
437 struct hostap_interface *iface;
438 static int cards_found /* = 0 */;
439 int irq_registered = 0;
442 if (pci_enable_device(pdev))
445 /* National Datacomm NCP130 based on TMD7160, not PLX9052. */
446 tmd7160 = (pdev->vendor == 0x15e8) && (pdev->device == 0x0131);
448 plx_ioaddr = pci_resource_start(pdev, 1);
449 pccard_ioaddr = pci_resource_start(pdev, tmd7160 ? 2 : 3);
453 attr_mem = NULL; /* no access to PC Card attribute memory */
455 printk(KERN_INFO "TMD7160 PCI/PCMCIA adapter: io=0x%x, "
456 "irq=%d, pccard_io=0x%x\n",
457 plx_ioaddr, pdev->irq, pccard_ioaddr);
459 cor_offset = plx_ioaddr;
462 outb(cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, plx_ioaddr);
464 reg = inb(plx_ioaddr);
465 if (reg != (cor_index | COR_LEVLREQ | COR_ENABLE_FUNC)) {
466 printk(KERN_ERR "%s: Error setting COR (expected="
467 "0x%02x, was=0x%02x)\n", dev_info,
468 cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, reg);
473 pccard_attr_mem = pci_resource_start(pdev, 2);
474 pccard_attr_len = pci_resource_len(pdev, 2);
475 if (pccard_attr_len < PLX_MIN_ATTR_LEN)
479 attr_mem = ioremap(pccard_attr_mem, pccard_attr_len);
480 if (attr_mem == NULL) {
481 printk(KERN_ERR "%s: cannot remap attr_mem\n",
486 printk(KERN_INFO "PLX9052 PCI/PCMCIA adapter: "
487 "mem=0x%lx, plx_io=0x%x, irq=%d, pccard_io=0x%x\n",
488 pccard_attr_mem, plx_ioaddr, pdev->irq, pccard_ioaddr);
490 if (prism2_plx_check_cis(attr_mem, pccard_attr_len,
491 &cor_offset, &cor_index)) {
492 printk(KERN_INFO "Unknown PC Card CIS - not a "
493 "Prism2/2.5 card?\n");
497 printk(KERN_DEBUG "Prism2/2.5 PC Card detected in PLX9052 "
500 /* Write COR to enable PC Card */
501 writeb(cor_index | COR_LEVLREQ | COR_ENABLE_FUNC,
502 attr_mem + cor_offset);
504 /* Enable PCI interrupts if they are not already enabled */
505 reg = inl(plx_ioaddr + PLX_INTCSR);
506 printk(KERN_DEBUG "PLX_INTCSR=0x%x\n", reg);
507 if (!(reg & PLX_INTCSR_PCI_INTEN)) {
508 outl(reg | PLX_INTCSR_PCI_INTEN,
509 plx_ioaddr + PLX_INTCSR);
510 if (!(inl(plx_ioaddr + PLX_INTCSR) &
511 PLX_INTCSR_PCI_INTEN)) {
512 printk(KERN_WARNING "%s: Could not enable "
513 "Local Interrupts\n", dev_info);
518 reg = inl(plx_ioaddr + PLX_CNTRL);
519 printk(KERN_DEBUG "PLX_CNTRL=0x%x (Serial EEPROM "
521 reg, (reg & PLX_CNTRL_SERIAL_EEPROM_PRESENT) != 0);
522 /* should set PLX_PCIIPR to 0x01 (INTA#) if Serial EEPROM is
523 * not present; but are there really such cards in use(?) */
526 dev = prism2_init_local_data(&prism2_plx_funcs, cards_found,
530 iface = netdev_priv(dev);
531 local = iface->local;
534 dev->irq = pdev->irq;
535 dev->base_addr = pccard_ioaddr;
536 local->attr_mem = attr_mem;
537 local->cor_offset = cor_offset;
539 pci_set_drvdata(pdev, dev);
541 if (request_irq(dev->irq, prism2_interrupt, SA_SHIRQ, dev->name,
543 printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
548 if (prism2_hw_config(dev, 1)) {
549 printk(KERN_DEBUG "%s: hardware initialization failed\n",
554 return hostap_hw_ready(dev);
557 prism2_free_local_data(dev);
559 if (irq_registered && dev)
560 free_irq(dev->irq, dev);
565 pci_disable_device(pdev);
571 static void prism2_plx_remove(struct pci_dev *pdev)
573 struct net_device *dev;
574 struct hostap_interface *iface;
576 dev = pci_get_drvdata(pdev);
577 iface = netdev_priv(dev);
579 /* Reset the hardware, and ensure interrupts are disabled. */
580 prism2_plx_cor_sreset(iface->local);
581 hfa384x_disable_interrupts(dev);
583 if (iface->local->attr_mem)
584 iounmap(iface->local->attr_mem);
586 free_irq(dev->irq, dev);
588 prism2_free_local_data(dev);
589 pci_disable_device(pdev);
593 MODULE_DEVICE_TABLE(pci, prism2_plx_id_table);
595 static struct pci_driver prism2_plx_drv_id = {
596 .name = "prism2_plx",
597 .id_table = prism2_plx_id_table,
598 .probe = prism2_plx_probe,
599 .remove = prism2_plx_remove,
606 static int __init init_prism2_plx(void)
608 printk(KERN_INFO "%s: %s\n", dev_info, version);
610 return pci_register_driver(&prism2_plx_drv_id);
614 static void __exit exit_prism2_plx(void)
616 pci_unregister_driver(&prism2_plx_drv_id);
617 printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
621 module_init(init_prism2_plx);
622 module_exit(exit_prism2_plx);