1#define PRISM2_PCI
2
3
4
5
6
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>
12#include <linux/slab.h>
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
24static char *dev_info = "hostap_pci";
25
26
27MODULE_AUTHOR("Jouni Malinen");
28MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN "
29 "PCI cards.");
30MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards");
31MODULE_LICENSE("GPL");
32
33
34
35struct hostap_pci_priv {
36 void __iomem *mem_start;
37};
38
39
40
41
42
43static DEFINE_PCI_DEVICE_TABLE(prism2_pci_id_table) = {
44
45 { 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID },
46
47 { 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID },
48
49 { 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID },
50 { 0 }
51};
52
53
54#ifdef PRISM2_IO_DEBUG
55
56static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
57{
58 struct hostap_interface *iface;
59 struct hostap_pci_priv *hw_priv;
60 local_info_t *local;
61 unsigned long flags;
62
63 iface = netdev_priv(dev);
64 local = iface->local;
65 hw_priv = local->hw_priv;
66
67 spin_lock_irqsave(&local->lock, flags);
68 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
69 writeb(v, hw_priv->mem_start + a);
70 spin_unlock_irqrestore(&local->lock, flags);
71}
72
73static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
74{
75 struct hostap_interface *iface;
76 struct hostap_pci_priv *hw_priv;
77 local_info_t *local;
78 unsigned long flags;
79 u8 v;
80
81 iface = netdev_priv(dev);
82 local = iface->local;
83 hw_priv = local->hw_priv;
84
85 spin_lock_irqsave(&local->lock, flags);
86 v = readb(hw_priv->mem_start + a);
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
92static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
93{
94 struct hostap_interface *iface;
95 struct hostap_pci_priv *hw_priv;
96 local_info_t *local;
97 unsigned long flags;
98
99 iface = netdev_priv(dev);
100 local = iface->local;
101 hw_priv = local->hw_priv;
102
103 spin_lock_irqsave(&local->lock, flags);
104 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
105 writew(v, hw_priv->mem_start + a);
106 spin_unlock_irqrestore(&local->lock, flags);
107}
108
109static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
110{
111 struct hostap_interface *iface;
112 struct hostap_pci_priv *hw_priv;
113 local_info_t *local;
114 unsigned long flags;
115 u16 v;
116
117 iface = netdev_priv(dev);
118 local = iface->local;
119 hw_priv = local->hw_priv;
120
121 spin_lock_irqsave(&local->lock, flags);
122 v = readw(hw_priv->mem_start + a);
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))
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)))
134
135#else
136
137static inline void hfa384x_outb(struct net_device *dev, int a, u8 v)
138{
139 struct hostap_interface *iface;
140 struct hostap_pci_priv *hw_priv;
141 iface = netdev_priv(dev);
142 hw_priv = iface->local->hw_priv;
143 writeb(v, hw_priv->mem_start + a);
144}
145
146static inline u8 hfa384x_inb(struct net_device *dev, int a)
147{
148 struct hostap_interface *iface;
149 struct hostap_pci_priv *hw_priv;
150 iface = netdev_priv(dev);
151 hw_priv = iface->local->hw_priv;
152 return readb(hw_priv->mem_start + a);
153}
154
155static inline void hfa384x_outw(struct net_device *dev, int a, u16 v)
156{
157 struct hostap_interface *iface;
158 struct hostap_pci_priv *hw_priv;
159 iface = netdev_priv(dev);
160 hw_priv = iface->local->hw_priv;
161 writew(v, hw_priv->mem_start + a);
162}
163
164static inline u16 hfa384x_inw(struct net_device *dev, int a)
165{
166 struct hostap_interface *iface;
167 struct hostap_pci_priv *hw_priv;
168 iface = netdev_priv(dev);
169 hw_priv = iface->local->hw_priv;
170 return readw(hw_priv->mem_start + a);
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))
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)))
179
180#endif
181
182
183static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
184 int len)
185{
186 u16 d_off;
187 __le16 *pos;
188
189 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
190 pos = (__le16 *) buf;
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
202static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
203{
204 u16 d_off;
205 __le16 *pos;
206
207 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
208 pos = (__le16 *) buf;
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
221#include "hostap_hw.c"
222
223static 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
232
233
234
235
236
237
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
249 i = 2000000 / 10;
250 while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i)
251 udelay(10);
252
253#else
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
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
268static 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
281static struct prism2_helper_functions prism2_pci_funcs =
282{
283 .card_present = NULL,
284 .cor_sreset = prism2_pci_cor_sreset,
285 .genesis_reset = prism2_pci_genesis_reset,
286 .hw_type = HOSTAP_HW_PCI,
287};
288
289
290static 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 ;
298 int irq_registered = 0;
299 struct hostap_interface *iface;
300 struct hostap_pci_priv *hw_priv;
301
302 hw_priv = kzalloc(sizeof(*hw_priv), GFP_KERNEL);
303 if (hw_priv == NULL)
304 return -ENOMEM;
305
306 if (pci_enable_device(pdev))
307 goto err_out_free;
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
316 mem = pci_ioremap_bar(pdev, 0);
317 if (mem == NULL) {
318 printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ;
319 goto fail;
320 }
321
322 dev = prism2_init_local_data(&prism2_pci_funcs, cards_found,
323 &pdev->dev);
324 if (dev == NULL)
325 goto fail;
326 iface = netdev_priv(dev);
327 local = iface->local;
328 local->hw_priv = hw_priv;
329 cards_found++;
330
331 dev->irq = pdev->irq;
332 hw_priv->mem_start = mem;
333 dev->base_addr = (unsigned long) mem;
334
335 prism2_pci_cor_sreset(local);
336
337 pci_set_drvdata(pdev, dev);
338
339 if (request_irq(dev->irq, prism2_interrupt, IRQF_SHARED, dev->name,
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);
369
370 err_out_free:
371 kfree(hw_priv);
372
373 return -ENODEV;
374}
375
376
377static void prism2_pci_remove(struct pci_dev *pdev)
378{
379 struct net_device *dev;
380 struct hostap_interface *iface;
381 void __iomem *mem_start;
382 struct hostap_pci_priv *hw_priv;
383
384 dev = pci_get_drvdata(pdev);
385 iface = netdev_priv(dev);
386 hw_priv = iface->local->hw_priv;
387
388
389 prism2_pci_cor_sreset(iface->local);
390 hfa384x_disable_interrupts(dev);
391
392 if (dev->irq)
393 free_irq(dev->irq, dev);
394
395 mem_start = hw_priv->mem_start;
396 prism2_free_local_data(dev);
397 kfree(hw_priv);
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
408static int prism2_pci_suspend(struct pci_dev *pdev, pm_message_t state)
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);
419 pci_set_power_state(pdev, PCI_D3hot);
420
421 return 0;
422}
423
424static int prism2_pci_resume(struct pci_dev *pdev)
425{
426 struct net_device *dev = pci_get_drvdata(pdev);
427 int err;
428
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 }
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
445
446
447MODULE_DEVICE_TABLE(pci, prism2_pci_id_table);
448
449static struct pci_driver prism2_pci_driver = {
450 .name = "hostap_pci",
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
458};
459
460
461static int __init init_prism2_pci(void)
462{
463 return pci_register_driver(&prism2_pci_driver);
464}
465
466
467static void __exit exit_prism2_pci(void)
468{
469 pci_unregister_driver(&prism2_pci_driver);
470}
471
472
473module_init(init_prism2_pci);
474module_exit(exit_prism2_pci);
475
