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");
36 /* FIX: do we need mb/wmb/rmb with memory operations? */
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 },
50 #ifdef PRISM2_IO_DEBUG
52 static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
54 struct hostap_interface *iface;
58 iface = netdev_priv(dev);
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);
67 static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
69 struct hostap_interface *iface;
74 iface = netdev_priv(dev);
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);
84 static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
86 struct hostap_interface *iface;
90 iface = netdev_priv(dev);
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);
99 static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
101 struct hostap_interface *iface;
106 iface = netdev_priv(dev);
107 local = iface->local;
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);
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)))
123 #else /* PRISM2_IO_DEBUG */
125 static inline void hfa384x_outb(struct net_device *dev, int a, u8 v)
127 struct hostap_interface *iface;
129 iface = netdev_priv(dev);
130 local = iface->local;
131 writeb(v, local->mem_start + a);
134 static inline u8 hfa384x_inb(struct net_device *dev, int a)
136 struct hostap_interface *iface;
138 iface = netdev_priv(dev);
139 local = iface->local;
140 return readb(local->mem_start + a);
143 static inline void hfa384x_outw(struct net_device *dev, int a, u16 v)
145 struct hostap_interface *iface;
147 iface = netdev_priv(dev);
148 local = iface->local;
149 writew(v, local->mem_start + a);
152 static inline u16 hfa384x_inw(struct net_device *dev, int a)
154 struct hostap_interface *iface;
156 iface = netdev_priv(dev);
157 local = iface->local;
158 return readw(local->mem_start + a);
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)))
168 #endif /* PRISM2_IO_DEBUG */
171 static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
177 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
180 for ( ; len > 1; len -= 2)
181 *pos++ = HFA384X_INW_DATA(d_off);
184 *((char *) pos) = HFA384X_INB(d_off);
190 static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
195 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
198 for ( ; len > 1; len -= 2)
199 HFA384X_OUTW_DATA(*pos++, d_off);
202 HFA384X_OUTB(*((char *) pos), d_off);
208 /* FIX: This might change at some point.. */
209 #include "hostap_hw.c"
211 static void prism2_pci_cor_sreset(local_info_t *local)
213 struct net_device *dev = local->dev;
216 reg = HFA384X_INB(HFA384X_PCICOR_OFF);
217 printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg);
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.
224 * Longer delays can be configured by uncommenting following line: */
225 /* #define PRISM2_PCI_USE_LONG_DELAYS */
227 #ifdef PRISM2_PCI_USE_LONG_DELAYS
230 HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
233 HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
236 /* Wait for f/w to complete initialization (CMD:BUSY == 0) */
238 while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i)
241 #else /* PRISM2_PCI_USE_LONG_DELAYS */
243 HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
245 HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
248 #endif /* PRISM2_PCI_USE_LONG_DELAYS */
250 if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) {
251 printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name);
256 static void prism2_pci_genesis_reset(local_info_t *local, int hcr)
258 struct net_device *dev = local->dev;
260 HFA384X_OUTW(0x00C5, HFA384X_PCICOR_OFF);
262 HFA384X_OUTW(hcr, HFA384X_PCIHCR_OFF);
264 HFA384X_OUTW(0x0045, HFA384X_PCICOR_OFF);
269 static struct prism2_helper_functions prism2_pci_funcs =
271 .card_present = NULL,
272 .cor_sreset = prism2_pci_cor_sreset,
275 .genesis_reset = prism2_pci_genesis_reset,
276 .hw_type = HOSTAP_HW_PCI,
280 static int prism2_pci_probe(struct pci_dev *pdev,
281 const struct pci_device_id *id)
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;
291 if (pci_enable_device(pdev))
294 phymem = pci_resource_start(pdev, 0);
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;
301 mem = ioremap(phymem, pci_resource_len(pdev, 0));
303 printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ;
307 #ifdef PRISM2_BUS_MASTER
308 pci_set_master(pdev);
309 #endif /* PRISM2_BUS_MASTER */
311 dev = prism2_init_local_data(&prism2_pci_funcs, cards_found,
315 iface = netdev_priv(dev);
316 local = iface->local;
319 dev->irq = pdev->irq;
320 local->mem_start = mem;
322 prism2_pci_cor_sreset(local);
324 pci_set_drvdata(pdev, dev);
326 if (request_irq(dev->irq, prism2_interrupt, SA_SHIRQ, dev->name,
328 printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
333 if (!local->pri_only && prism2_hw_config(dev, 1)) {
334 printk(KERN_DEBUG "%s: hardware initialization failed\n",
339 printk(KERN_INFO "%s: Intersil Prism2.5 PCI: "
340 "mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq);
342 return hostap_hw_ready(dev);
345 if (irq_registered && dev)
346 free_irq(dev->irq, dev);
351 release_mem_region(phymem, pci_resource_len(pdev, 0));
354 pci_disable_device(pdev);
355 prism2_free_local_data(dev);
361 static void prism2_pci_remove(struct pci_dev *pdev)
363 struct net_device *dev;
364 struct hostap_interface *iface;
365 void __iomem *mem_start;
367 dev = pci_get_drvdata(pdev);
368 iface = netdev_priv(dev);
370 /* Reset the hardware, and ensure interrupts are disabled. */
371 prism2_pci_cor_sreset(iface->local);
372 hfa384x_disable_interrupts(dev);
375 free_irq(dev->irq, dev);
377 mem_start = iface->local->mem_start;
378 prism2_free_local_data(dev);
382 release_mem_region(pci_resource_start(pdev, 0),
383 pci_resource_len(pdev, 0));
384 pci_disable_device(pdev);
389 static int prism2_pci_suspend(struct pci_dev *pdev, u32 state)
391 struct net_device *dev = pci_get_drvdata(pdev);
393 if (netif_running(dev)) {
394 netif_stop_queue(dev);
395 netif_device_detach(dev);
398 pci_save_state(pdev);
399 pci_disable_device(pdev);
400 pci_set_power_state(pdev, 3);
405 static int prism2_pci_resume(struct pci_dev *pdev)
407 struct net_device *dev = pci_get_drvdata(pdev);
409 pci_enable_device(pdev);
410 pci_restore_state(pdev);
411 prism2_hw_config(dev, 0);
412 if (netif_running(dev)) {
413 netif_device_attach(dev);
414 netif_start_queue(dev);
419 #endif /* CONFIG_PM */
422 MODULE_DEVICE_TABLE(pci, prism2_pci_id_table);
424 static struct pci_driver prism2_pci_drv_id = {
425 .name = "prism2_pci",
426 .id_table = prism2_pci_id_table,
427 .probe = prism2_pci_probe,
428 .remove = prism2_pci_remove,
430 .suspend = prism2_pci_suspend,
431 .resume = prism2_pci_resume,
432 #endif /* CONFIG_PM */
433 /* Linux 2.4.6 added save_state and enable_wake that are not used here
438 static int __init init_prism2_pci(void)
440 printk(KERN_INFO "%s: %s\n", dev_info, version);
442 return pci_register_driver(&prism2_pci_drv_id);
446 static void __exit exit_prism2_pci(void)
448 pci_unregister_driver(&prism2_pci_drv_id);
449 printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
453 module_init(init_prism2_pci);
454 module_exit(exit_prism2_pci);