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/config.h>
8 #include <linux/version.h>
9 #include <linux/module.h>
10 #include <linux/init.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>
18 #include <linux/ioport.h>
19 #include <linux/pci.h>
22 #include "hostap_wlan.h"
25 static char *version = PRISM2_VERSION " (Jouni Malinen <jkmaline@cc.hut.fi>)";
26 static char *dev_info = "hostap_pci";
29 MODULE_AUTHOR("Jouni Malinen");
30 MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN "
32 MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards");
33 MODULE_LICENSE("GPL");
34 MODULE_VERSION(PRISM2_VERSION);
37 /* struct local_info::hw_priv */
38 struct hostap_pci_priv {
39 void __iomem *mem_start;
43 /* FIX: do we need mb/wmb/rmb with memory operations? */
46 static struct pci_device_id prism2_pci_id_table[] __devinitdata = {
47 /* Intersil Prism3 ISL3872 11Mb/s WLAN Controller */
48 { 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID },
49 /* Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller */
50 { 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID },
51 /* Samsung MagicLAN SWL-2210P */
52 { 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID },
57 #ifdef PRISM2_IO_DEBUG
59 static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
61 struct hostap_interface *iface;
65 iface = netdev_priv(dev);
68 spin_lock_irqsave(&local->lock, flags);
69 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
70 writeb(v, hw_priv->mem_start + a);
71 spin_unlock_irqrestore(&local->lock, flags);
74 static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
76 struct hostap_interface *iface;
81 iface = netdev_priv(dev);
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);
91 static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
93 struct hostap_interface *iface;
97 iface = netdev_priv(dev);
100 spin_lock_irqsave(&local->lock, flags);
101 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
102 writew(v, hw_priv->mem_start + a);
103 spin_unlock_irqrestore(&local->lock, flags);
106 static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
108 struct hostap_interface *iface;
113 iface = netdev_priv(dev);
114 local = iface->local;
116 spin_lock_irqsave(&local->lock, flags);
117 v = readw(hw_priv->mem_start + a);
118 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
119 spin_unlock_irqrestore(&local->lock, flags);
123 #define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
124 #define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
125 #define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
126 #define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
127 #define HFA384X_OUTW_DATA(v,a) hfa384x_outw_debug(dev, (a), cpu_to_le16((v)))
128 #define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw_debug(dev, (a)))
130 #else /* PRISM2_IO_DEBUG */
132 static inline void hfa384x_outb(struct net_device *dev, int a, u8 v)
134 struct hostap_interface *iface;
135 struct hostap_pci_priv *hw_priv;
136 iface = netdev_priv(dev);
137 hw_priv = iface->local->hw_priv;
138 writeb(v, hw_priv->mem_start + a);
141 static inline u8 hfa384x_inb(struct net_device *dev, int a)
143 struct hostap_interface *iface;
144 struct hostap_pci_priv *hw_priv;
145 iface = netdev_priv(dev);
146 hw_priv = iface->local->hw_priv;
147 return readb(hw_priv->mem_start + a);
150 static inline void hfa384x_outw(struct net_device *dev, int a, u16 v)
152 struct hostap_interface *iface;
153 struct hostap_pci_priv *hw_priv;
154 iface = netdev_priv(dev);
155 hw_priv = iface->local->hw_priv;
156 writew(v, hw_priv->mem_start + a);
159 static inline u16 hfa384x_inw(struct net_device *dev, int a)
161 struct hostap_interface *iface;
162 struct hostap_pci_priv *hw_priv;
163 iface = netdev_priv(dev);
164 hw_priv = iface->local->hw_priv;
165 return readw(hw_priv->mem_start + a);
168 #define HFA384X_OUTB(v,a) hfa384x_outb(dev, (a), (v))
169 #define HFA384X_INB(a) hfa384x_inb(dev, (a))
170 #define HFA384X_OUTW(v,a) hfa384x_outw(dev, (a), (v))
171 #define HFA384X_INW(a) hfa384x_inw(dev, (a))
172 #define HFA384X_OUTW_DATA(v,a) hfa384x_outw(dev, (a), cpu_to_le16((v)))
173 #define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw(dev, (a)))
175 #endif /* PRISM2_IO_DEBUG */
178 static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
184 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
187 for ( ; len > 1; len -= 2)
188 *pos++ = HFA384X_INW_DATA(d_off);
191 *((char *) pos) = HFA384X_INB(d_off);
197 static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
202 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
205 for ( ; len > 1; len -= 2)
206 HFA384X_OUTW_DATA(*pos++, d_off);
209 HFA384X_OUTB(*((char *) pos), d_off);
215 /* FIX: This might change at some point.. */
216 #include "hostap_hw.c"
218 static void prism2_pci_cor_sreset(local_info_t *local)
220 struct net_device *dev = local->dev;
223 reg = HFA384X_INB(HFA384X_PCICOR_OFF);
224 printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg);
226 /* linux-wlan-ng uses extremely long hold and settle times for
227 * COR sreset. A comment in the driver code mentions that the long
228 * delays appear to be necessary. However, at least IBM 22P6901 seems
229 * to work fine with shorter delays.
231 * Longer delays can be configured by uncommenting following line: */
232 /* #define PRISM2_PCI_USE_LONG_DELAYS */
234 #ifdef PRISM2_PCI_USE_LONG_DELAYS
237 HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
240 HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
243 /* Wait for f/w to complete initialization (CMD:BUSY == 0) */
245 while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i)
248 #else /* PRISM2_PCI_USE_LONG_DELAYS */
250 HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
252 HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
255 #endif /* PRISM2_PCI_USE_LONG_DELAYS */
257 if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) {
258 printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name);
263 static void prism2_pci_genesis_reset(local_info_t *local, int hcr)
265 struct net_device *dev = local->dev;
267 HFA384X_OUTW(0x00C5, HFA384X_PCICOR_OFF);
269 HFA384X_OUTW(hcr, HFA384X_PCIHCR_OFF);
271 HFA384X_OUTW(0x0045, HFA384X_PCICOR_OFF);
276 static struct prism2_helper_functions prism2_pci_funcs =
278 .card_present = NULL,
279 .cor_sreset = prism2_pci_cor_sreset,
280 .genesis_reset = prism2_pci_genesis_reset,
281 .hw_type = HOSTAP_HW_PCI,
285 static int prism2_pci_probe(struct pci_dev *pdev,
286 const struct pci_device_id *id)
288 unsigned long phymem;
289 void __iomem *mem = NULL;
290 local_info_t *local = NULL;
291 struct net_device *dev = NULL;
292 static int cards_found /* = 0 */;
293 int irq_registered = 0;
294 struct hostap_interface *iface;
295 struct hostap_pci_priv *hw_priv;
297 hw_priv = kmalloc(sizeof(*hw_priv), GFP_KERNEL);
300 memset(hw_priv, 0, sizeof(*hw_priv));
302 if (pci_enable_device(pdev))
305 phymem = pci_resource_start(pdev, 0);
307 if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) {
308 printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n");
309 goto err_out_disable;
312 mem = ioremap(phymem, pci_resource_len(pdev, 0));
314 printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ;
318 dev = prism2_init_local_data(&prism2_pci_funcs, cards_found,
322 iface = netdev_priv(dev);
323 local = iface->local;
324 local->hw_priv = hw_priv;
327 dev->irq = pdev->irq;
328 hw_priv->mem_start = mem;
330 prism2_pci_cor_sreset(local);
332 pci_set_drvdata(pdev, dev);
334 if (request_irq(dev->irq, prism2_interrupt, SA_SHIRQ, dev->name,
336 printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
341 if (!local->pri_only && prism2_hw_config(dev, 1)) {
342 printk(KERN_DEBUG "%s: hardware initialization failed\n",
347 printk(KERN_INFO "%s: Intersil Prism2.5 PCI: "
348 "mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq);
350 return hostap_hw_ready(dev);
355 if (irq_registered && dev)
356 free_irq(dev->irq, dev);
361 release_mem_region(phymem, pci_resource_len(pdev, 0));
364 pci_disable_device(pdev);
367 local->hw_priv = NULL;
368 prism2_free_local_data(dev);
374 static void prism2_pci_remove(struct pci_dev *pdev)
376 struct net_device *dev;
377 struct hostap_interface *iface;
378 void __iomem *mem_start;
379 struct hostap_pci_priv *hw_priv;
381 dev = pci_get_drvdata(pdev);
382 iface = netdev_priv(dev);
383 hw_priv = iface->local->hw_priv;
385 /* Reset the hardware, and ensure interrupts are disabled. */
386 prism2_pci_cor_sreset(iface->local);
387 hfa384x_disable_interrupts(dev);
390 free_irq(dev->irq, dev);
392 mem_start = hw_priv->mem_start;
394 iface->local->hw_priv = NULL;
395 prism2_free_local_data(dev);
399 release_mem_region(pci_resource_start(pdev, 0),
400 pci_resource_len(pdev, 0));
401 pci_disable_device(pdev);
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);
415 pci_save_state(pdev);
416 pci_disable_device(pdev);
417 pci_set_power_state(pdev, PCI_D3hot);
422 static int prism2_pci_resume(struct pci_dev *pdev)
424 struct net_device *dev = pci_get_drvdata(pdev);
426 pci_enable_device(pdev);
427 pci_restore_state(pdev);
428 prism2_hw_config(dev, 0);
429 if (netif_running(dev)) {
430 netif_device_attach(dev);
431 netif_start_queue(dev);
436 #endif /* CONFIG_PM */
439 MODULE_DEVICE_TABLE(pci, prism2_pci_id_table);
441 static struct pci_driver prism2_pci_drv_id = {
442 .name = "hostap_pci",
443 .id_table = prism2_pci_id_table,
444 .probe = prism2_pci_probe,
445 .remove = prism2_pci_remove,
447 .suspend = prism2_pci_suspend,
448 .resume = prism2_pci_resume,
449 #endif /* CONFIG_PM */
450 /* Linux 2.4.6 added save_state and enable_wake that are not used here
455 static int __init init_prism2_pci(void)
457 printk(KERN_INFO "%s: %s\n", dev_info, version);
459 return pci_register_driver(&prism2_pci_drv_id);
463 static void __exit exit_prism2_pci(void)
465 pci_unregister_driver(&prism2_pci_drv_id);
466 printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
470 module_init(init_prism2_pci);
471 module_exit(exit_prism2_pci);