Pull bugzilla-9429 into release branch
[pv_ops_mirror.git] / drivers / net / wireless / hostap / hostap_pci.c
blobfc876ba185721533649f6fa3a31565afdd7e117c
1 #define PRISM2_PCI
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> */
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/workqueue.h>
13 #include <linux/wireless.h>
14 #include <net/iw_handler.h>
16 #include <linux/ioport.h>
17 #include <linux/pci.h>
18 #include <asm/io.h>
20 #include "hostap_wlan.h"
23 static char *dev_info = "hostap_pci";
26 MODULE_AUTHOR("Jouni Malinen");
27 MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN "
28 "PCI cards.");
29 MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards");
30 MODULE_LICENSE("GPL");
33 /* struct local_info::hw_priv */
34 struct hostap_pci_priv {
35 void __iomem *mem_start;
39 /* FIX: do we need mb/wmb/rmb with memory operations? */
42 static struct pci_device_id prism2_pci_id_table[] __devinitdata = {
43 /* Intersil Prism3 ISL3872 11Mb/s WLAN Controller */
44 { 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID },
45 /* Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller */
46 { 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID },
47 /* Samsung MagicLAN SWL-2210P */
48 { 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID },
49 { 0 }
53 #ifdef PRISM2_IO_DEBUG
55 static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
57 struct hostap_interface *iface;
58 struct hostap_pci_priv *hw_priv;
59 local_info_t *local;
60 unsigned long flags;
62 iface = netdev_priv(dev);
63 local = iface->local;
64 hw_priv = local->hw_priv;
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);
72 static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
74 struct hostap_interface *iface;
75 struct hostap_pci_priv *hw_priv;
76 local_info_t *local;
77 unsigned long flags;
78 u8 v;
80 iface = netdev_priv(dev);
81 local = iface->local;
82 hw_priv = local->hw_priv;
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;
91 static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
93 struct hostap_interface *iface;
94 struct hostap_pci_priv *hw_priv;
95 local_info_t *local;
96 unsigned long flags;
98 iface = netdev_priv(dev);
99 local = iface->local;
100 hw_priv = local->hw_priv;
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);
108 static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
110 struct hostap_interface *iface;
111 struct hostap_pci_priv *hw_priv;
112 local_info_t *local;
113 unsigned long flags;
114 u16 v;
116 iface = netdev_priv(dev);
117 local = iface->local;
118 hw_priv = local->hw_priv;
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;
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), cpu_to_le16((v)))
132 #define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw_debug(dev, (a)))
134 #else /* PRISM2_IO_DEBUG */
136 static inline void hfa384x_outb(struct net_device *dev, int a, u8 v)
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);
145 static inline u8 hfa384x_inb(struct net_device *dev, int a)
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);
154 static inline void hfa384x_outw(struct net_device *dev, int a, u16 v)
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);
163 static inline u16 hfa384x_inw(struct net_device *dev, int a)
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);
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), cpu_to_le16((v)))
177 #define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw(dev, (a)))
179 #endif /* PRISM2_IO_DEBUG */
182 static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
183 int len)
185 u16 d_off;
186 u16 *pos;
188 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
189 pos = (u16 *) buf;
191 for ( ; len > 1; len -= 2)
192 *pos++ = HFA384X_INW_DATA(d_off);
194 if (len & 1)
195 *((char *) pos) = HFA384X_INB(d_off);
197 return 0;
201 static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
203 u16 d_off;
204 u16 *pos;
206 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
207 pos = (u16 *) buf;
209 for ( ; len > 1; len -= 2)
210 HFA384X_OUTW_DATA(*pos++, d_off);
212 if (len & 1)
213 HFA384X_OUTB(*((char *) pos), d_off);
215 return 0;
219 /* FIX: This might change at some point.. */
220 #include "hostap_hw.c"
222 static void prism2_pci_cor_sreset(local_info_t *local)
224 struct net_device *dev = local->dev;
225 u16 reg;
227 reg = HFA384X_INB(HFA384X_PCICOR_OFF);
228 printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg);
230 /* linux-wlan-ng uses extremely long hold and settle times for
231 * COR sreset. A comment in the driver code mentions that the long
232 * delays appear to be necessary. However, at least IBM 22P6901 seems
233 * to work fine with shorter delays.
235 * Longer delays can be configured by uncommenting following line: */
236 /* #define PRISM2_PCI_USE_LONG_DELAYS */
238 #ifdef PRISM2_PCI_USE_LONG_DELAYS
239 int i;
241 HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
242 mdelay(250);
244 HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
245 mdelay(500);
247 /* Wait for f/w to complete initialization (CMD:BUSY == 0) */
248 i = 2000000 / 10;
249 while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i)
250 udelay(10);
252 #else /* PRISM2_PCI_USE_LONG_DELAYS */
254 HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
255 mdelay(2);
256 HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
257 mdelay(2);
259 #endif /* PRISM2_PCI_USE_LONG_DELAYS */
261 if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) {
262 printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name);
267 static void prism2_pci_genesis_reset(local_info_t *local, int hcr)
269 struct net_device *dev = local->dev;
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);
280 static struct prism2_helper_functions prism2_pci_funcs =
282 .card_present = NULL,
283 .cor_sreset = prism2_pci_cor_sreset,
284 .genesis_reset = prism2_pci_genesis_reset,
285 .hw_type = HOSTAP_HW_PCI,
289 static int prism2_pci_probe(struct pci_dev *pdev,
290 const struct pci_device_id *id)
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 /* = 0 */;
297 int irq_registered = 0;
298 struct hostap_interface *iface;
299 struct hostap_pci_priv *hw_priv;
301 hw_priv = kzalloc(sizeof(*hw_priv), GFP_KERNEL);
302 if (hw_priv == NULL)
303 return -ENOMEM;
305 if (pci_enable_device(pdev))
306 goto err_out_free;
308 phymem = pci_resource_start(pdev, 0);
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;
315 mem = ioremap(phymem, pci_resource_len(pdev, 0));
316 if (mem == NULL) {
317 printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ;
318 goto fail;
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++;
330 dev->irq = pdev->irq;
331 hw_priv->mem_start = mem;
333 prism2_pci_cor_sreset(local);
335 pci_set_drvdata(pdev, dev);
337 if (request_irq(dev->irq, prism2_interrupt, IRQF_SHARED, dev->name,
338 dev)) {
339 printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
340 goto fail;
341 } else
342 irq_registered = 1;
344 if (!local->pri_only && prism2_hw_config(dev, 1)) {
345 printk(KERN_DEBUG "%s: hardware initialization failed\n",
346 dev_info);
347 goto fail;
350 printk(KERN_INFO "%s: Intersil Prism2.5 PCI: "
351 "mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq);
353 return hostap_hw_ready(dev);
355 fail:
356 if (irq_registered && dev)
357 free_irq(dev->irq, dev);
359 if (mem)
360 iounmap(mem);
362 release_mem_region(phymem, pci_resource_len(pdev, 0));
364 err_out_disable:
365 pci_disable_device(pdev);
366 prism2_free_local_data(dev);
368 err_out_free:
369 kfree(hw_priv);
371 return -ENODEV;
375 static void prism2_pci_remove(struct pci_dev *pdev)
377 struct net_device *dev;
378 struct hostap_interface *iface;
379 void __iomem *mem_start;
380 struct hostap_pci_priv *hw_priv;
382 dev = pci_get_drvdata(pdev);
383 iface = netdev_priv(dev);
384 hw_priv = iface->local->hw_priv;
386 /* Reset the hardware, and ensure interrupts are disabled. */
387 prism2_pci_cor_sreset(iface->local);
388 hfa384x_disable_interrupts(dev);
390 if (dev->irq)
391 free_irq(dev->irq, dev);
393 mem_start = hw_priv->mem_start;
394 prism2_free_local_data(dev);
395 kfree(hw_priv);
397 iounmap(mem_start);
399 release_mem_region(pci_resource_start(pdev, 0),
400 pci_resource_len(pdev, 0));
401 pci_disable_device(pdev);
405 #ifdef CONFIG_PM
406 static int prism2_pci_suspend(struct pci_dev *pdev, pm_message_t state)
408 struct net_device *dev = pci_get_drvdata(pdev);
410 if (netif_running(dev)) {
411 netif_stop_queue(dev);
412 netif_device_detach(dev);
414 prism2_suspend(dev);
415 pci_save_state(pdev);
416 pci_disable_device(pdev);
417 pci_set_power_state(pdev, PCI_D3hot);
419 return 0;
422 static int prism2_pci_resume(struct pci_dev *pdev)
424 struct net_device *dev = pci_get_drvdata(pdev);
425 int err;
427 err = pci_enable_device(pdev);
428 if (err) {
429 printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
430 dev->name);
431 return err;
433 pci_restore_state(pdev);
434 prism2_hw_config(dev, 0);
435 if (netif_running(dev)) {
436 netif_device_attach(dev);
437 netif_start_queue(dev);
440 return 0;
442 #endif /* CONFIG_PM */
445 MODULE_DEVICE_TABLE(pci, prism2_pci_id_table);
447 static struct pci_driver prism2_pci_driver = {
448 .name = "hostap_pci",
449 .id_table = prism2_pci_id_table,
450 .probe = prism2_pci_probe,
451 .remove = prism2_pci_remove,
452 #ifdef CONFIG_PM
453 .suspend = prism2_pci_suspend,
454 .resume = prism2_pci_resume,
455 #endif /* CONFIG_PM */
459 static int __init init_prism2_pci(void)
461 return pci_register_driver(&prism2_pci_driver);
465 static void __exit exit_prism2_pci(void)
467 pci_unregister_driver(&prism2_pci_driver);
471 module_init(init_prism2_pci);
472 module_exit(exit_prism2_pci);