Commit | Line | Data |
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ff1d2767 JM |
1 | #define PRISM2_PCI |
2 | ||
3 | /* Host AP driver's support for Intersil Prism2.5 PCI cards is based on | |
4 | * driver patches from Reyk Floeter <reyk@vantronix.net> and | |
5 | * Andy Warner <andyw@pobox.com> */ | |
6 | ||
ff1d2767 JM |
7 | #include <linux/module.h> |
8 | #include <linux/init.h> | |
9 | #include <linux/if.h> | |
10 | #include <linux/skbuff.h> | |
11 | #include <linux/netdevice.h> | |
5a0e3ad6 | 12 | #include <linux/slab.h> |
ff1d2767 JM |
13 | #include <linux/workqueue.h> |
14 | #include <linux/wireless.h> | |
15 | #include <net/iw_handler.h> | |
16 | ||
17 | #include <linux/ioport.h> | |
18 | #include <linux/pci.h> | |
19 | #include <asm/io.h> | |
20 | ||
21 | #include "hostap_wlan.h" | |
22 | ||
23 | ||
ff1d2767 JM |
24 | static char *dev_info = "hostap_pci"; |
25 | ||
26 | ||
27 | MODULE_AUTHOR("Jouni Malinen"); | |
28 | MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN " | |
29 | "PCI cards."); | |
30 | MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards"); | |
31 | MODULE_LICENSE("GPL"); | |
32 | ||
33 | ||
67e0e473 JM |
34 | /* struct local_info::hw_priv */ |
35 | struct hostap_pci_priv { | |
36 | void __iomem *mem_start; | |
37 | }; | |
38 | ||
39 | ||
ff1d2767 JM |
40 | /* FIX: do we need mb/wmb/rmb with memory operations? */ |
41 | ||
42 | ||
a3aa1884 | 43 | static DEFINE_PCI_DEVICE_TABLE(prism2_pci_id_table) = { |
ff1d2767 JM |
44 | /* Intersil Prism3 ISL3872 11Mb/s WLAN Controller */ |
45 | { 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID }, | |
46 | /* Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller */ | |
47 | { 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID }, | |
48 | /* Samsung MagicLAN SWL-2210P */ | |
49 | { 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID }, | |
50 | { 0 } | |
51 | }; | |
52 | ||
53 | ||
54 | #ifdef PRISM2_IO_DEBUG | |
55 | ||
56 | static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v) | |
57 | { | |
58 | struct hostap_interface *iface; | |
f7a74447 | 59 | struct hostap_pci_priv *hw_priv; |
ff1d2767 JM |
60 | local_info_t *local; |
61 | unsigned long flags; | |
62 | ||
63 | iface = netdev_priv(dev); | |
64 | local = iface->local; | |
f7a74447 | 65 | hw_priv = local->hw_priv; |
ff1d2767 JM |
66 | |
67 | spin_lock_irqsave(&local->lock, flags); | |
68 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v); | |
67e0e473 | 69 | writeb(v, hw_priv->mem_start + a); |
ff1d2767 JM |
70 | spin_unlock_irqrestore(&local->lock, flags); |
71 | } | |
72 | ||
73 | static inline u8 hfa384x_inb_debug(struct net_device *dev, int a) | |
74 | { | |
75 | struct hostap_interface *iface; | |
f7a74447 | 76 | struct hostap_pci_priv *hw_priv; |
ff1d2767 JM |
77 | local_info_t *local; |
78 | unsigned long flags; | |
79 | u8 v; | |
80 | ||
81 | iface = netdev_priv(dev); | |
82 | local = iface->local; | |
f7a74447 | 83 | hw_priv = local->hw_priv; |
ff1d2767 JM |
84 | |
85 | spin_lock_irqsave(&local->lock, flags); | |
67e0e473 | 86 | v = readb(hw_priv->mem_start + a); |
ff1d2767 JM |
87 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v); |
88 | spin_unlock_irqrestore(&local->lock, flags); | |
89 | return v; | |
90 | } | |
91 | ||
92 | static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v) | |
93 | { | |
94 | struct hostap_interface *iface; | |
f7a74447 | 95 | struct hostap_pci_priv *hw_priv; |
ff1d2767 JM |
96 | local_info_t *local; |
97 | unsigned long flags; | |
98 | ||
99 | iface = netdev_priv(dev); | |
100 | local = iface->local; | |
f7a74447 | 101 | hw_priv = local->hw_priv; |
ff1d2767 JM |
102 | |
103 | spin_lock_irqsave(&local->lock, flags); | |
104 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v); | |
67e0e473 | 105 | writew(v, hw_priv->mem_start + a); |
ff1d2767 JM |
106 | spin_unlock_irqrestore(&local->lock, flags); |
107 | } | |
108 | ||
109 | static inline u16 hfa384x_inw_debug(struct net_device *dev, int a) | |
110 | { | |
111 | struct hostap_interface *iface; | |
f7a74447 | 112 | struct hostap_pci_priv *hw_priv; |
ff1d2767 JM |
113 | local_info_t *local; |
114 | unsigned long flags; | |
115 | u16 v; | |
116 | ||
117 | iface = netdev_priv(dev); | |
118 | local = iface->local; | |
f7a74447 | 119 | hw_priv = local->hw_priv; |
ff1d2767 JM |
120 | |
121 | spin_lock_irqsave(&local->lock, flags); | |
67e0e473 | 122 | v = readw(hw_priv->mem_start + a); |
ff1d2767 JM |
123 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v); |
124 | spin_unlock_irqrestore(&local->lock, flags); | |
125 | return v; | |
126 | } | |
127 | ||
128 | #define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v)) | |
129 | #define HFA384X_INB(a) hfa384x_inb_debug(dev, (a)) | |
130 | #define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v)) | |
131 | #define HFA384X_INW(a) hfa384x_inw_debug(dev, (a)) | |
8a9faf3c AV |
132 | #define HFA384X_OUTW_DATA(v,a) hfa384x_outw_debug(dev, (a), le16_to_cpu((v))) |
133 | #define HFA384X_INW_DATA(a) cpu_to_le16(hfa384x_inw_debug(dev, (a))) | |
ff1d2767 JM |
134 | |
135 | #else /* PRISM2_IO_DEBUG */ | |
136 | ||
137 | static inline void hfa384x_outb(struct net_device *dev, int a, u8 v) | |
138 | { | |
139 | struct hostap_interface *iface; | |
67e0e473 | 140 | struct hostap_pci_priv *hw_priv; |
ff1d2767 | 141 | iface = netdev_priv(dev); |
67e0e473 JM |
142 | hw_priv = iface->local->hw_priv; |
143 | writeb(v, hw_priv->mem_start + a); | |
ff1d2767 JM |
144 | } |
145 | ||
146 | static inline u8 hfa384x_inb(struct net_device *dev, int a) | |
147 | { | |
148 | struct hostap_interface *iface; | |
67e0e473 | 149 | struct hostap_pci_priv *hw_priv; |
ff1d2767 | 150 | iface = netdev_priv(dev); |
67e0e473 JM |
151 | hw_priv = iface->local->hw_priv; |
152 | return readb(hw_priv->mem_start + a); | |
ff1d2767 JM |
153 | } |
154 | ||
155 | static inline void hfa384x_outw(struct net_device *dev, int a, u16 v) | |
156 | { | |
157 | struct hostap_interface *iface; | |
67e0e473 | 158 | struct hostap_pci_priv *hw_priv; |
ff1d2767 | 159 | iface = netdev_priv(dev); |
67e0e473 JM |
160 | hw_priv = iface->local->hw_priv; |
161 | writew(v, hw_priv->mem_start + a); | |
ff1d2767 JM |
162 | } |
163 | ||
164 | static inline u16 hfa384x_inw(struct net_device *dev, int a) | |
165 | { | |
166 | struct hostap_interface *iface; | |
67e0e473 | 167 | struct hostap_pci_priv *hw_priv; |
ff1d2767 | 168 | iface = netdev_priv(dev); |
67e0e473 JM |
169 | hw_priv = iface->local->hw_priv; |
170 | return readw(hw_priv->mem_start + a); | |
ff1d2767 JM |
171 | } |
172 | ||
173 | #define HFA384X_OUTB(v,a) hfa384x_outb(dev, (a), (v)) | |
174 | #define HFA384X_INB(a) hfa384x_inb(dev, (a)) | |
175 | #define HFA384X_OUTW(v,a) hfa384x_outw(dev, (a), (v)) | |
176 | #define HFA384X_INW(a) hfa384x_inw(dev, (a)) | |
8a9faf3c AV |
177 | #define HFA384X_OUTW_DATA(v,a) hfa384x_outw(dev, (a), le16_to_cpu((v))) |
178 | #define HFA384X_INW_DATA(a) cpu_to_le16(hfa384x_inw(dev, (a))) | |
ff1d2767 JM |
179 | |
180 | #endif /* PRISM2_IO_DEBUG */ | |
181 | ||
182 | ||
183 | static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf, | |
184 | int len) | |
185 | { | |
186 | u16 d_off; | |
8a9faf3c | 187 | __le16 *pos; |
ff1d2767 JM |
188 | |
189 | d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF; | |
8a9faf3c | 190 | pos = (__le16 *) buf; |
ff1d2767 JM |
191 | |
192 | for ( ; len > 1; len -= 2) | |
193 | *pos++ = HFA384X_INW_DATA(d_off); | |
194 | ||
195 | if (len & 1) | |
196 | *((char *) pos) = HFA384X_INB(d_off); | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | ||
202 | static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len) | |
203 | { | |
204 | u16 d_off; | |
8a9faf3c | 205 | __le16 *pos; |
ff1d2767 JM |
206 | |
207 | d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF; | |
8a9faf3c | 208 | pos = (__le16 *) buf; |
ff1d2767 JM |
209 | |
210 | for ( ; len > 1; len -= 2) | |
211 | HFA384X_OUTW_DATA(*pos++, d_off); | |
212 | ||
213 | if (len & 1) | |
214 | HFA384X_OUTB(*((char *) pos), d_off); | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
219 | ||
220 | /* FIX: This might change at some point.. */ | |
221 | #include "hostap_hw.c" | |
222 | ||
223 | static void prism2_pci_cor_sreset(local_info_t *local) | |
224 | { | |
225 | struct net_device *dev = local->dev; | |
226 | u16 reg; | |
227 | ||
228 | reg = HFA384X_INB(HFA384X_PCICOR_OFF); | |
229 | printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg); | |
230 | ||
231 | /* linux-wlan-ng uses extremely long hold and settle times for | |
232 | * COR sreset. A comment in the driver code mentions that the long | |
233 | * delays appear to be necessary. However, at least IBM 22P6901 seems | |
234 | * to work fine with shorter delays. | |
235 | * | |
236 | * Longer delays can be configured by uncommenting following line: */ | |
237 | /* #define PRISM2_PCI_USE_LONG_DELAYS */ | |
238 | ||
239 | #ifdef PRISM2_PCI_USE_LONG_DELAYS | |
240 | int i; | |
241 | ||
242 | HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF); | |
243 | mdelay(250); | |
244 | ||
245 | HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF); | |
246 | mdelay(500); | |
247 | ||
248 | /* Wait for f/w to complete initialization (CMD:BUSY == 0) */ | |
249 | i = 2000000 / 10; | |
250 | while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i) | |
251 | udelay(10); | |
252 | ||
253 | #else /* PRISM2_PCI_USE_LONG_DELAYS */ | |
254 | ||
255 | HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF); | |
256 | mdelay(2); | |
257 | HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF); | |
258 | mdelay(2); | |
259 | ||
260 | #endif /* PRISM2_PCI_USE_LONG_DELAYS */ | |
261 | ||
262 | if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) { | |
263 | printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name); | |
264 | } | |
265 | } | |
266 | ||
267 | ||
268 | static void prism2_pci_genesis_reset(local_info_t *local, int hcr) | |
269 | { | |
270 | struct net_device *dev = local->dev; | |
271 | ||
272 | HFA384X_OUTW(0x00C5, HFA384X_PCICOR_OFF); | |
273 | mdelay(10); | |
274 | HFA384X_OUTW(hcr, HFA384X_PCIHCR_OFF); | |
275 | mdelay(10); | |
276 | HFA384X_OUTW(0x0045, HFA384X_PCICOR_OFF); | |
277 | mdelay(10); | |
278 | } | |
279 | ||
280 | ||
281 | static struct prism2_helper_functions prism2_pci_funcs = | |
282 | { | |
283 | .card_present = NULL, | |
284 | .cor_sreset = prism2_pci_cor_sreset, | |
ff1d2767 JM |
285 | .genesis_reset = prism2_pci_genesis_reset, |
286 | .hw_type = HOSTAP_HW_PCI, | |
287 | }; | |
288 | ||
289 | ||
290 | static int prism2_pci_probe(struct pci_dev *pdev, | |
291 | const struct pci_device_id *id) | |
292 | { | |
293 | unsigned long phymem; | |
294 | void __iomem *mem = NULL; | |
295 | local_info_t *local = NULL; | |
296 | struct net_device *dev = NULL; | |
297 | static int cards_found /* = 0 */; | |
298 | int irq_registered = 0; | |
299 | struct hostap_interface *iface; | |
67e0e473 JM |
300 | struct hostap_pci_priv *hw_priv; |
301 | ||
b0471bb7 | 302 | hw_priv = kzalloc(sizeof(*hw_priv), GFP_KERNEL); |
67e0e473 JM |
303 | if (hw_priv == NULL) |
304 | return -ENOMEM; | |
ff1d2767 JM |
305 | |
306 | if (pci_enable_device(pdev)) | |
93201999 | 307 | goto err_out_free; |
ff1d2767 JM |
308 | |
309 | phymem = pci_resource_start(pdev, 0); | |
310 | ||
311 | if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) { | |
312 | printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n"); | |
313 | goto err_out_disable; | |
314 | } | |
315 | ||
275f165f | 316 | mem = pci_ioremap_bar(pdev, 0); |
ff1d2767 JM |
317 | if (mem == NULL) { |
318 | printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ; | |
319 | goto fail; | |
320 | } | |
321 | ||
0cd545d6 DH |
322 | dev = prism2_init_local_data(&prism2_pci_funcs, cards_found, |
323 | &pdev->dev); | |
ff1d2767 JM |
324 | if (dev == NULL) |
325 | goto fail; | |
326 | iface = netdev_priv(dev); | |
327 | local = iface->local; | |
67e0e473 | 328 | local->hw_priv = hw_priv; |
ff1d2767 JM |
329 | cards_found++; |
330 | ||
331 | dev->irq = pdev->irq; | |
67e0e473 | 332 | hw_priv->mem_start = mem; |
0f4da2d7 | 333 | dev->base_addr = (unsigned long) mem; |
ff1d2767 JM |
334 | |
335 | prism2_pci_cor_sreset(local); | |
336 | ||
337 | pci_set_drvdata(pdev, dev); | |
338 | ||
1fb9df5d | 339 | if (request_irq(dev->irq, prism2_interrupt, IRQF_SHARED, dev->name, |
ff1d2767 JM |
340 | dev)) { |
341 | printk(KERN_WARNING "%s: request_irq failed\n", dev->name); | |
342 | goto fail; | |
343 | } else | |
344 | irq_registered = 1; | |
345 | ||
346 | if (!local->pri_only && prism2_hw_config(dev, 1)) { | |
347 | printk(KERN_DEBUG "%s: hardware initialization failed\n", | |
348 | dev_info); | |
349 | goto fail; | |
350 | } | |
351 | ||
352 | printk(KERN_INFO "%s: Intersil Prism2.5 PCI: " | |
353 | "mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq); | |
354 | ||
355 | return hostap_hw_ready(dev); | |
356 | ||
357 | fail: | |
358 | if (irq_registered && dev) | |
359 | free_irq(dev->irq, dev); | |
360 | ||
361 | if (mem) | |
362 | iounmap(mem); | |
363 | ||
364 | release_mem_region(phymem, pci_resource_len(pdev, 0)); | |
365 | ||
366 | err_out_disable: | |
367 | pci_disable_device(pdev); | |
368 | prism2_free_local_data(dev); | |
93201999 JM |
369 | |
370 | err_out_free: | |
c355184c | 371 | kfree(hw_priv); |
ff1d2767 JM |
372 | |
373 | return -ENODEV; | |
374 | } | |
375 | ||
376 | ||
377 | static void prism2_pci_remove(struct pci_dev *pdev) | |
378 | { | |
379 | struct net_device *dev; | |
380 | struct hostap_interface *iface; | |
381 | void __iomem *mem_start; | |
67e0e473 | 382 | struct hostap_pci_priv *hw_priv; |
ff1d2767 JM |
383 | |
384 | dev = pci_get_drvdata(pdev); | |
385 | iface = netdev_priv(dev); | |
67e0e473 | 386 | hw_priv = iface->local->hw_priv; |
ff1d2767 JM |
387 | |
388 | /* Reset the hardware, and ensure interrupts are disabled. */ | |
389 | prism2_pci_cor_sreset(iface->local); | |
390 | hfa384x_disable_interrupts(dev); | |
391 | ||
392 | if (dev->irq) | |
393 | free_irq(dev->irq, dev); | |
394 | ||
67e0e473 | 395 | mem_start = hw_priv->mem_start; |
ff1d2767 | 396 | prism2_free_local_data(dev); |
c355184c | 397 | kfree(hw_priv); |
ff1d2767 JM |
398 | |
399 | iounmap(mem_start); | |
400 | ||
401 | release_mem_region(pci_resource_start(pdev, 0), | |
402 | pci_resource_len(pdev, 0)); | |
403 | pci_disable_device(pdev); | |
404 | } | |
405 | ||
406 | ||
407 | #ifdef CONFIG_PM | |
b2dabd5a | 408 | static int prism2_pci_suspend(struct pci_dev *pdev, pm_message_t state) |
ff1d2767 JM |
409 | { |
410 | struct net_device *dev = pci_get_drvdata(pdev); | |
411 | ||
412 | if (netif_running(dev)) { | |
413 | netif_stop_queue(dev); | |
414 | netif_device_detach(dev); | |
415 | } | |
416 | prism2_suspend(dev); | |
417 | pci_save_state(pdev); | |
418 | pci_disable_device(pdev); | |
583a4e88 | 419 | pci_set_power_state(pdev, PCI_D3hot); |
ff1d2767 JM |
420 | |
421 | return 0; | |
422 | } | |
423 | ||
424 | static int prism2_pci_resume(struct pci_dev *pdev) | |
425 | { | |
426 | struct net_device *dev = pci_get_drvdata(pdev); | |
02e0e5e9 | 427 | int err; |
ff1d2767 | 428 | |
02e0e5e9 JL |
429 | err = pci_enable_device(pdev); |
430 | if (err) { | |
431 | printk(KERN_ERR "%s: pci_enable_device failed on resume\n", | |
432 | dev->name); | |
433 | return err; | |
434 | } | |
ff1d2767 JM |
435 | pci_restore_state(pdev); |
436 | prism2_hw_config(dev, 0); | |
437 | if (netif_running(dev)) { | |
438 | netif_device_attach(dev); | |
439 | netif_start_queue(dev); | |
440 | } | |
441 | ||
442 | return 0; | |
443 | } | |
444 | #endif /* CONFIG_PM */ | |
445 | ||
446 | ||
447 | MODULE_DEVICE_TABLE(pci, prism2_pci_id_table); | |
448 | ||
2493d8e4 | 449 | static struct pci_driver prism2_pci_driver = { |
7a716536 | 450 | .name = "hostap_pci", |
ff1d2767 JM |
451 | .id_table = prism2_pci_id_table, |
452 | .probe = prism2_pci_probe, | |
453 | .remove = prism2_pci_remove, | |
454 | #ifdef CONFIG_PM | |
455 | .suspend = prism2_pci_suspend, | |
456 | .resume = prism2_pci_resume, | |
457 | #endif /* CONFIG_PM */ | |
ff1d2767 JM |
458 | }; |
459 | ||
460 | ||
461 | static int __init init_prism2_pci(void) | |
462 | { | |
2493d8e4 | 463 | return pci_register_driver(&prism2_pci_driver); |
ff1d2767 JM |
464 | } |
465 | ||
466 | ||
467 | static void __exit exit_prism2_pci(void) | |
468 | { | |
2493d8e4 | 469 | pci_unregister_driver(&prism2_pci_driver); |
ff1d2767 JM |
470 | } |
471 | ||
472 | ||
473 | module_init(init_prism2_pci); | |
474 | module_exit(exit_prism2_pci); |