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/module.h>
9 #include <linux/init.h>
11 #include <linux/skbuff.h>
12 #include <linux/netdevice.h>
13 #include <linux/workqueue.h>
14 #include <linux/wireless.h>
15 #include <net/iw_handler.h>
17 #include <linux/ioport.h>
18 #include <linux/pci.h>
21 #include "hostap_wlan.h"
24 static char *version = PRISM2_VERSION " (Jouni Malinen <jkmaline@cc.hut.fi>)";
25 static char *dev_info = "hostap_pci";
28 MODULE_AUTHOR("Jouni Malinen");
29 MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN "
31 MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards");
32 MODULE_LICENSE("GPL");
33 MODULE_VERSION(PRISM2_VERSION);
36 /* struct local_info::hw_priv */
37 struct hostap_pci_priv {
38 void __iomem *mem_start;
42 /* FIX: do we need mb/wmb/rmb with memory operations? */
45 static struct pci_device_id prism2_pci_id_table[] __devinitdata = {
46 /* Intersil Prism3 ISL3872 11Mb/s WLAN Controller */
47 { 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID },
48 /* Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller */
49 { 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID },
50 /* Samsung MagicLAN SWL-2210P */
51 { 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID },
56 #ifdef PRISM2_IO_DEBUG
58 static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
60 struct hostap_interface *iface;
61 struct hostap_pci_priv *hw_priv;
65 iface = netdev_priv(dev);
67 hw_priv = local->hw_priv;
69 spin_lock_irqsave(&local->lock, flags);
70 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
71 writeb(v, hw_priv->mem_start + a);
72 spin_unlock_irqrestore(&local->lock, flags);
75 static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
77 struct hostap_interface *iface;
78 struct hostap_pci_priv *hw_priv;
83 iface = netdev_priv(dev);
85 hw_priv = local->hw_priv;
87 spin_lock_irqsave(&local->lock, flags);
88 v = readb(hw_priv->mem_start + a);
89 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v);
90 spin_unlock_irqrestore(&local->lock, flags);
94 static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
96 struct hostap_interface *iface;
97 struct hostap_pci_priv *hw_priv;
101 iface = netdev_priv(dev);
102 local = iface->local;
103 hw_priv = local->hw_priv;
105 spin_lock_irqsave(&local->lock, flags);
106 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
107 writew(v, hw_priv->mem_start + a);
108 spin_unlock_irqrestore(&local->lock, flags);
111 static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
113 struct hostap_interface *iface;
114 struct hostap_pci_priv *hw_priv;
119 iface = netdev_priv(dev);
120 local = iface->local;
121 hw_priv = local->hw_priv;
123 spin_lock_irqsave(&local->lock, flags);
124 v = readw(hw_priv->mem_start + a);
125 prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
126 spin_unlock_irqrestore(&local->lock, flags);
130 #define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
131 #define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
132 #define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
133 #define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
134 #define HFA384X_OUTW_DATA(v,a) hfa384x_outw_debug(dev, (a), cpu_to_le16((v)))
135 #define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw_debug(dev, (a)))
137 #else /* PRISM2_IO_DEBUG */
139 static inline void hfa384x_outb(struct net_device *dev, int a, u8 v)
141 struct hostap_interface *iface;
142 struct hostap_pci_priv *hw_priv;
143 iface = netdev_priv(dev);
144 hw_priv = iface->local->hw_priv;
145 writeb(v, hw_priv->mem_start + a);
148 static inline u8 hfa384x_inb(struct net_device *dev, int a)
150 struct hostap_interface *iface;
151 struct hostap_pci_priv *hw_priv;
152 iface = netdev_priv(dev);
153 hw_priv = iface->local->hw_priv;
154 return readb(hw_priv->mem_start + a);
157 static inline void hfa384x_outw(struct net_device *dev, int a, u16 v)
159 struct hostap_interface *iface;
160 struct hostap_pci_priv *hw_priv;
161 iface = netdev_priv(dev);
162 hw_priv = iface->local->hw_priv;
163 writew(v, hw_priv->mem_start + a);
166 static inline u16 hfa384x_inw(struct net_device *dev, int a)
168 struct hostap_interface *iface;
169 struct hostap_pci_priv *hw_priv;
170 iface = netdev_priv(dev);
171 hw_priv = iface->local->hw_priv;
172 return readw(hw_priv->mem_start + a);
175 #define HFA384X_OUTB(v,a) hfa384x_outb(dev, (a), (v))
176 #define HFA384X_INB(a) hfa384x_inb(dev, (a))
177 #define HFA384X_OUTW(v,a) hfa384x_outw(dev, (a), (v))
178 #define HFA384X_INW(a) hfa384x_inw(dev, (a))
179 #define HFA384X_OUTW_DATA(v,a) hfa384x_outw(dev, (a), cpu_to_le16((v)))
180 #define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw(dev, (a)))
182 #endif /* PRISM2_IO_DEBUG */
185 static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
191 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
194 for ( ; len > 1; len -= 2)
195 *pos++ = HFA384X_INW_DATA(d_off);
198 *((char *) pos) = HFA384X_INB(d_off);
204 static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
209 d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
212 for ( ; len > 1; len -= 2)
213 HFA384X_OUTW_DATA(*pos++, d_off);
216 HFA384X_OUTB(*((char *) pos), d_off);
222 /* FIX: This might change at some point.. */
223 #include "hostap_hw.c"
225 static void prism2_pci_cor_sreset(local_info_t *local)
227 struct net_device *dev = local->dev;
230 reg = HFA384X_INB(HFA384X_PCICOR_OFF);
231 printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg);
233 /* linux-wlan-ng uses extremely long hold and settle times for
234 * COR sreset. A comment in the driver code mentions that the long
235 * delays appear to be necessary. However, at least IBM 22P6901 seems
236 * to work fine with shorter delays.
238 * Longer delays can be configured by uncommenting following line: */
239 /* #define PRISM2_PCI_USE_LONG_DELAYS */
241 #ifdef PRISM2_PCI_USE_LONG_DELAYS
244 HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
247 HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
250 /* Wait for f/w to complete initialization (CMD:BUSY == 0) */
252 while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i)
255 #else /* PRISM2_PCI_USE_LONG_DELAYS */
257 HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
259 HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
262 #endif /* PRISM2_PCI_USE_LONG_DELAYS */
264 if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) {
265 printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name);
270 static void prism2_pci_genesis_reset(local_info_t *local, int hcr)
272 struct net_device *dev = local->dev;
274 HFA384X_OUTW(0x00C5, HFA384X_PCICOR_OFF);
276 HFA384X_OUTW(hcr, HFA384X_PCIHCR_OFF);
278 HFA384X_OUTW(0x0045, HFA384X_PCICOR_OFF);
283 static struct prism2_helper_functions prism2_pci_funcs =
285 .card_present = NULL,
286 .cor_sreset = prism2_pci_cor_sreset,
287 .genesis_reset = prism2_pci_genesis_reset,
288 .hw_type = HOSTAP_HW_PCI,
292 static int prism2_pci_probe(struct pci_dev *pdev,
293 const struct pci_device_id *id)
295 unsigned long phymem;
296 void __iomem *mem = NULL;
297 local_info_t *local = NULL;
298 struct net_device *dev = NULL;
299 static int cards_found /* = 0 */;
300 int irq_registered = 0;
301 struct hostap_interface *iface;
302 struct hostap_pci_priv *hw_priv;
304 hw_priv = kmalloc(sizeof(*hw_priv), GFP_KERNEL);
307 memset(hw_priv, 0, sizeof(*hw_priv));
309 if (pci_enable_device(pdev))
312 phymem = pci_resource_start(pdev, 0);
314 if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) {
315 printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n");
316 goto err_out_disable;
319 mem = ioremap(phymem, pci_resource_len(pdev, 0));
321 printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ;
325 dev = prism2_init_local_data(&prism2_pci_funcs, cards_found,
329 iface = netdev_priv(dev);
330 local = iface->local;
331 local->hw_priv = hw_priv;
334 dev->irq = pdev->irq;
335 hw_priv->mem_start = mem;
337 prism2_pci_cor_sreset(local);
339 pci_set_drvdata(pdev, dev);
341 if (request_irq(dev->irq, prism2_interrupt, SA_SHIRQ, dev->name,
343 printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
348 if (!local->pri_only && prism2_hw_config(dev, 1)) {
349 printk(KERN_DEBUG "%s: hardware initialization failed\n",
354 printk(KERN_INFO "%s: Intersil Prism2.5 PCI: "
355 "mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq);
357 return hostap_hw_ready(dev);
360 if (irq_registered && dev)
361 free_irq(dev->irq, dev);
366 release_mem_region(phymem, pci_resource_len(pdev, 0));
369 pci_disable_device(pdev);
370 prism2_free_local_data(dev);
377 static void prism2_pci_remove(struct pci_dev *pdev)
379 struct net_device *dev;
380 struct hostap_interface *iface;
381 void __iomem *mem_start;
382 struct hostap_pci_priv *hw_priv;
384 dev = pci_get_drvdata(pdev);
385 iface = netdev_priv(dev);
386 hw_priv = iface->local->hw_priv;
388 /* Reset the hardware, and ensure interrupts are disabled. */
389 prism2_pci_cor_sreset(iface->local);
390 hfa384x_disable_interrupts(dev);
393 free_irq(dev->irq, dev);
395 mem_start = hw_priv->mem_start;
396 prism2_free_local_data(dev);
401 release_mem_region(pci_resource_start(pdev, 0),
402 pci_resource_len(pdev, 0));
403 pci_disable_device(pdev);
408 static int prism2_pci_suspend(struct pci_dev *pdev, pm_message_t state)
410 struct net_device *dev = pci_get_drvdata(pdev);
412 if (netif_running(dev)) {
413 netif_stop_queue(dev);
414 netif_device_detach(dev);
417 pci_save_state(pdev);
418 pci_disable_device(pdev);
419 pci_set_power_state(pdev, PCI_D3hot);
424 static int prism2_pci_resume(struct pci_dev *pdev)
426 struct net_device *dev = pci_get_drvdata(pdev);
428 pci_enable_device(pdev);
429 pci_restore_state(pdev);
430 prism2_hw_config(dev, 0);
431 if (netif_running(dev)) {
432 netif_device_attach(dev);
433 netif_start_queue(dev);
438 #endif /* CONFIG_PM */
441 MODULE_DEVICE_TABLE(pci, prism2_pci_id_table);
443 static struct pci_driver prism2_pci_drv_id = {
444 .name = "hostap_pci",
445 .id_table = prism2_pci_id_table,
446 .probe = prism2_pci_probe,
447 .remove = prism2_pci_remove,
449 .suspend = prism2_pci_suspend,
450 .resume = prism2_pci_resume,
451 #endif /* CONFIG_PM */
452 /* Linux 2.4.6 added save_state and enable_wake that are not used here
457 static int __init init_prism2_pci(void)
459 printk(KERN_INFO "%s: %s\n", dev_info, version);
461 return pci_register_driver(&prism2_pci_drv_id);
465 static void __exit exit_prism2_pci(void)
467 pci_unregister_driver(&prism2_pci_drv_id);
468 printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
472 module_init(init_prism2_pci);
473 module_exit(exit_prism2_pci);