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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 | ||
7 | #include <linux/config.h> | |
8 | #include <linux/version.h> | |
9 | #include <linux/module.h> | |
10 | #include <linux/init.h> | |
11 | #include <linux/if.h> | |
12 | #include <linux/skbuff.h> | |
13 | #include <linux/netdevice.h> | |
14 | #include <linux/workqueue.h> | |
15 | #include <linux/wireless.h> | |
16 | #include <net/iw_handler.h> | |
17 | ||
18 | #include <linux/ioport.h> | |
19 | #include <linux/pci.h> | |
20 | #include <asm/io.h> | |
21 | ||
22 | #include "hostap_wlan.h" | |
23 | ||
24 | ||
25 | static char *version = PRISM2_VERSION " (Jouni Malinen <jkmaline@cc.hut.fi>)"; | |
26 | static char *dev_info = "hostap_pci"; | |
27 | ||
28 | ||
29 | MODULE_AUTHOR("Jouni Malinen"); | |
30 | MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN " | |
31 | "PCI cards."); | |
32 | MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards"); | |
33 | MODULE_LICENSE("GPL"); | |
34 | ||
35 | ||
36 | /* FIX: do we need mb/wmb/rmb with memory operations? */ | |
37 | ||
38 | ||
39 | static struct pci_device_id prism2_pci_id_table[] __devinitdata = { | |
40 | /* Intersil Prism3 ISL3872 11Mb/s WLAN Controller */ | |
41 | { 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID }, | |
42 | /* Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller */ | |
43 | { 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID }, | |
44 | /* Samsung MagicLAN SWL-2210P */ | |
45 | { 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID }, | |
46 | { 0 } | |
47 | }; | |
48 | ||
49 | ||
50 | #ifdef PRISM2_IO_DEBUG | |
51 | ||
52 | static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v) | |
53 | { | |
54 | struct hostap_interface *iface; | |
55 | local_info_t *local; | |
56 | unsigned long flags; | |
57 | ||
58 | iface = netdev_priv(dev); | |
59 | local = iface->local; | |
60 | ||
61 | spin_lock_irqsave(&local->lock, flags); | |
62 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v); | |
63 | writeb(v, local->mem_start + a); | |
64 | spin_unlock_irqrestore(&local->lock, flags); | |
65 | } | |
66 | ||
67 | static inline u8 hfa384x_inb_debug(struct net_device *dev, int a) | |
68 | { | |
69 | struct hostap_interface *iface; | |
70 | local_info_t *local; | |
71 | unsigned long flags; | |
72 | u8 v; | |
73 | ||
74 | iface = netdev_priv(dev); | |
75 | local = iface->local; | |
76 | ||
77 | spin_lock_irqsave(&local->lock, flags); | |
78 | v = readb(local->mem_start + a); | |
79 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v); | |
80 | spin_unlock_irqrestore(&local->lock, flags); | |
81 | return v; | |
82 | } | |
83 | ||
84 | static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v) | |
85 | { | |
86 | struct hostap_interface *iface; | |
87 | local_info_t *local; | |
88 | unsigned long flags; | |
89 | ||
90 | iface = netdev_priv(dev); | |
91 | local = iface->local; | |
92 | ||
93 | spin_lock_irqsave(&local->lock, flags); | |
94 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v); | |
95 | writew(v, local->mem_start + a); | |
96 | spin_unlock_irqrestore(&local->lock, flags); | |
97 | } | |
98 | ||
99 | static inline u16 hfa384x_inw_debug(struct net_device *dev, int a) | |
100 | { | |
101 | struct hostap_interface *iface; | |
102 | local_info_t *local; | |
103 | unsigned long flags; | |
104 | u16 v; | |
105 | ||
106 | iface = netdev_priv(dev); | |
107 | local = iface->local; | |
108 | ||
109 | spin_lock_irqsave(&local->lock, flags); | |
110 | v = readw(local->mem_start + a); | |
111 | prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v); | |
112 | spin_unlock_irqrestore(&local->lock, flags); | |
113 | return v; | |
114 | } | |
115 | ||
116 | #define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v)) | |
117 | #define HFA384X_INB(a) hfa384x_inb_debug(dev, (a)) | |
118 | #define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v)) | |
119 | #define HFA384X_INW(a) hfa384x_inw_debug(dev, (a)) | |
120 | #define HFA384X_OUTW_DATA(v,a) hfa384x_outw_debug(dev, (a), cpu_to_le16((v))) | |
121 | #define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw_debug(dev, (a))) | |
122 | ||
123 | #else /* PRISM2_IO_DEBUG */ | |
124 | ||
125 | static inline void hfa384x_outb(struct net_device *dev, int a, u8 v) | |
126 | { | |
127 | struct hostap_interface *iface; | |
128 | local_info_t *local; | |
129 | iface = netdev_priv(dev); | |
130 | local = iface->local; | |
131 | writeb(v, local->mem_start + a); | |
132 | } | |
133 | ||
134 | static inline u8 hfa384x_inb(struct net_device *dev, int a) | |
135 | { | |
136 | struct hostap_interface *iface; | |
137 | local_info_t *local; | |
138 | iface = netdev_priv(dev); | |
139 | local = iface->local; | |
140 | return readb(local->mem_start + a); | |
141 | } | |
142 | ||
143 | static inline void hfa384x_outw(struct net_device *dev, int a, u16 v) | |
144 | { | |
145 | struct hostap_interface *iface; | |
146 | local_info_t *local; | |
147 | iface = netdev_priv(dev); | |
148 | local = iface->local; | |
149 | writew(v, local->mem_start + a); | |
150 | } | |
151 | ||
152 | static inline u16 hfa384x_inw(struct net_device *dev, int a) | |
153 | { | |
154 | struct hostap_interface *iface; | |
155 | local_info_t *local; | |
156 | iface = netdev_priv(dev); | |
157 | local = iface->local; | |
158 | return readw(local->mem_start + a); | |
159 | } | |
160 | ||
161 | #define HFA384X_OUTB(v,a) hfa384x_outb(dev, (a), (v)) | |
162 | #define HFA384X_INB(a) hfa384x_inb(dev, (a)) | |
163 | #define HFA384X_OUTW(v,a) hfa384x_outw(dev, (a), (v)) | |
164 | #define HFA384X_INW(a) hfa384x_inw(dev, (a)) | |
165 | #define HFA384X_OUTW_DATA(v,a) hfa384x_outw(dev, (a), cpu_to_le16((v))) | |
166 | #define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw(dev, (a))) | |
167 | ||
168 | #endif /* PRISM2_IO_DEBUG */ | |
169 | ||
170 | ||
171 | static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf, | |
172 | int len) | |
173 | { | |
174 | u16 d_off; | |
175 | u16 *pos; | |
176 | ||
177 | d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF; | |
178 | pos = (u16 *) buf; | |
179 | ||
180 | for ( ; len > 1; len -= 2) | |
181 | *pos++ = HFA384X_INW_DATA(d_off); | |
182 | ||
183 | if (len & 1) | |
184 | *((char *) pos) = HFA384X_INB(d_off); | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
189 | ||
190 | static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len) | |
191 | { | |
192 | u16 d_off; | |
193 | u16 *pos; | |
194 | ||
195 | d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF; | |
196 | pos = (u16 *) buf; | |
197 | ||
198 | for ( ; len > 1; len -= 2) | |
199 | HFA384X_OUTW_DATA(*pos++, d_off); | |
200 | ||
201 | if (len & 1) | |
202 | HFA384X_OUTB(*((char *) pos), d_off); | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | ||
208 | /* FIX: This might change at some point.. */ | |
209 | #include "hostap_hw.c" | |
210 | ||
211 | static void prism2_pci_cor_sreset(local_info_t *local) | |
212 | { | |
213 | struct net_device *dev = local->dev; | |
214 | u16 reg; | |
215 | ||
216 | reg = HFA384X_INB(HFA384X_PCICOR_OFF); | |
217 | printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg); | |
218 | ||
219 | /* linux-wlan-ng uses extremely long hold and settle times for | |
220 | * COR sreset. A comment in the driver code mentions that the long | |
221 | * delays appear to be necessary. However, at least IBM 22P6901 seems | |
222 | * to work fine with shorter delays. | |
223 | * | |
224 | * Longer delays can be configured by uncommenting following line: */ | |
225 | /* #define PRISM2_PCI_USE_LONG_DELAYS */ | |
226 | ||
227 | #ifdef PRISM2_PCI_USE_LONG_DELAYS | |
228 | int i; | |
229 | ||
230 | HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF); | |
231 | mdelay(250); | |
232 | ||
233 | HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF); | |
234 | mdelay(500); | |
235 | ||
236 | /* Wait for f/w to complete initialization (CMD:BUSY == 0) */ | |
237 | i = 2000000 / 10; | |
238 | while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i) | |
239 | udelay(10); | |
240 | ||
241 | #else /* PRISM2_PCI_USE_LONG_DELAYS */ | |
242 | ||
243 | HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF); | |
244 | mdelay(2); | |
245 | HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF); | |
246 | mdelay(2); | |
247 | ||
248 | #endif /* PRISM2_PCI_USE_LONG_DELAYS */ | |
249 | ||
250 | if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) { | |
251 | printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name); | |
252 | } | |
253 | } | |
254 | ||
255 | ||
256 | static void prism2_pci_genesis_reset(local_info_t *local, int hcr) | |
257 | { | |
258 | struct net_device *dev = local->dev; | |
259 | ||
260 | HFA384X_OUTW(0x00C5, HFA384X_PCICOR_OFF); | |
261 | mdelay(10); | |
262 | HFA384X_OUTW(hcr, HFA384X_PCIHCR_OFF); | |
263 | mdelay(10); | |
264 | HFA384X_OUTW(0x0045, HFA384X_PCICOR_OFF); | |
265 | mdelay(10); | |
266 | } | |
267 | ||
268 | ||
269 | static struct prism2_helper_functions prism2_pci_funcs = | |
270 | { | |
271 | .card_present = NULL, | |
272 | .cor_sreset = prism2_pci_cor_sreset, | |
273 | .dev_open = NULL, | |
274 | .dev_close = NULL, | |
275 | .genesis_reset = prism2_pci_genesis_reset, | |
276 | .hw_type = HOSTAP_HW_PCI, | |
277 | }; | |
278 | ||
279 | ||
280 | static int prism2_pci_probe(struct pci_dev *pdev, | |
281 | const struct pci_device_id *id) | |
282 | { | |
283 | unsigned long phymem; | |
284 | void __iomem *mem = NULL; | |
285 | local_info_t *local = NULL; | |
286 | struct net_device *dev = NULL; | |
287 | static int cards_found /* = 0 */; | |
288 | int irq_registered = 0; | |
289 | struct hostap_interface *iface; | |
290 | ||
291 | if (pci_enable_device(pdev)) | |
292 | return -EIO; | |
293 | ||
294 | phymem = pci_resource_start(pdev, 0); | |
295 | ||
296 | if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) { | |
297 | printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n"); | |
298 | goto err_out_disable; | |
299 | } | |
300 | ||
301 | mem = ioremap(phymem, pci_resource_len(pdev, 0)); | |
302 | if (mem == NULL) { | |
303 | printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ; | |
304 | goto fail; | |
305 | } | |
306 | ||
307 | #ifdef PRISM2_BUS_MASTER | |
308 | pci_set_master(pdev); | |
309 | #endif /* PRISM2_BUS_MASTER */ | |
310 | ||
311 | dev = prism2_init_local_data(&prism2_pci_funcs, cards_found); | |
312 | if (dev == NULL) | |
313 | goto fail; | |
314 | iface = netdev_priv(dev); | |
315 | local = iface->local; | |
316 | cards_found++; | |
317 | ||
318 | dev->irq = pdev->irq; | |
319 | local->mem_start = mem; | |
320 | ||
321 | prism2_pci_cor_sreset(local); | |
322 | ||
323 | pci_set_drvdata(pdev, dev); | |
324 | ||
325 | if (request_irq(dev->irq, prism2_interrupt, SA_SHIRQ, dev->name, | |
326 | dev)) { | |
327 | printk(KERN_WARNING "%s: request_irq failed\n", dev->name); | |
328 | goto fail; | |
329 | } else | |
330 | irq_registered = 1; | |
331 | ||
332 | if (!local->pri_only && prism2_hw_config(dev, 1)) { | |
333 | printk(KERN_DEBUG "%s: hardware initialization failed\n", | |
334 | dev_info); | |
335 | goto fail; | |
336 | } | |
337 | ||
338 | printk(KERN_INFO "%s: Intersil Prism2.5 PCI: " | |
339 | "mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq); | |
340 | ||
341 | return hostap_hw_ready(dev); | |
342 | ||
343 | fail: | |
344 | if (irq_registered && dev) | |
345 | free_irq(dev->irq, dev); | |
346 | ||
347 | if (mem) | |
348 | iounmap(mem); | |
349 | ||
350 | release_mem_region(phymem, pci_resource_len(pdev, 0)); | |
351 | ||
352 | err_out_disable: | |
353 | pci_disable_device(pdev); | |
354 | prism2_free_local_data(dev); | |
355 | ||
356 | return -ENODEV; | |
357 | } | |
358 | ||
359 | ||
360 | static void prism2_pci_remove(struct pci_dev *pdev) | |
361 | { | |
362 | struct net_device *dev; | |
363 | struct hostap_interface *iface; | |
364 | void __iomem *mem_start; | |
365 | ||
366 | dev = pci_get_drvdata(pdev); | |
367 | iface = netdev_priv(dev); | |
368 | ||
369 | /* Reset the hardware, and ensure interrupts are disabled. */ | |
370 | prism2_pci_cor_sreset(iface->local); | |
371 | hfa384x_disable_interrupts(dev); | |
372 | ||
373 | if (dev->irq) | |
374 | free_irq(dev->irq, dev); | |
375 | ||
376 | mem_start = iface->local->mem_start; | |
377 | prism2_free_local_data(dev); | |
378 | ||
379 | iounmap(mem_start); | |
380 | ||
381 | release_mem_region(pci_resource_start(pdev, 0), | |
382 | pci_resource_len(pdev, 0)); | |
383 | pci_disable_device(pdev); | |
384 | } | |
385 | ||
386 | ||
387 | #ifdef CONFIG_PM | |
388 | static int prism2_pci_suspend(struct pci_dev *pdev, u32 state) | |
389 | { | |
390 | struct net_device *dev = pci_get_drvdata(pdev); | |
391 | ||
392 | if (netif_running(dev)) { | |
393 | netif_stop_queue(dev); | |
394 | netif_device_detach(dev); | |
395 | } | |
396 | prism2_suspend(dev); | |
397 | pci_save_state(pdev); | |
398 | pci_disable_device(pdev); | |
399 | pci_set_power_state(pdev, 3); | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
404 | static int prism2_pci_resume(struct pci_dev *pdev) | |
405 | { | |
406 | struct net_device *dev = pci_get_drvdata(pdev); | |
407 | ||
408 | pci_enable_device(pdev); | |
409 | pci_restore_state(pdev); | |
410 | prism2_hw_config(dev, 0); | |
411 | if (netif_running(dev)) { | |
412 | netif_device_attach(dev); | |
413 | netif_start_queue(dev); | |
414 | } | |
415 | ||
416 | return 0; | |
417 | } | |
418 | #endif /* CONFIG_PM */ | |
419 | ||
420 | ||
421 | MODULE_DEVICE_TABLE(pci, prism2_pci_id_table); | |
422 | ||
423 | static struct pci_driver prism2_pci_drv_id = { | |
424 | .name = "prism2_pci", | |
425 | .id_table = prism2_pci_id_table, | |
426 | .probe = prism2_pci_probe, | |
427 | .remove = prism2_pci_remove, | |
428 | #ifdef CONFIG_PM | |
429 | .suspend = prism2_pci_suspend, | |
430 | .resume = prism2_pci_resume, | |
431 | #endif /* CONFIG_PM */ | |
432 | /* Linux 2.4.6 added save_state and enable_wake that are not used here | |
433 | */ | |
434 | }; | |
435 | ||
436 | ||
437 | static int __init init_prism2_pci(void) | |
438 | { | |
439 | printk(KERN_INFO "%s: %s\n", dev_info, version); | |
440 | ||
441 | return pci_register_driver(&prism2_pci_drv_id); | |
442 | } | |
443 | ||
444 | ||
445 | static void __exit exit_prism2_pci(void) | |
446 | { | |
447 | pci_unregister_driver(&prism2_pci_drv_id); | |
448 | printk(KERN_INFO "%s: Driver unloaded\n", dev_info); | |
449 | } | |
450 | ||
451 | ||
452 | module_init(init_prism2_pci); | |
453 | module_exit(exit_prism2_pci); |