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