Add HostAP wireless driver.
Includes minor cleanups from Adrian Bunk <bunk@stusta.de>.
diff --git a/drivers/net/wireless/hostap/hostap_pci.c b/drivers/net/wireless/hostap/hostap_pci.c
new file mode 100644
index 0000000..3a20898
--- /dev/null
+++ b/drivers/net/wireless/hostap/hostap_pci.c
@@ -0,0 +1,453 @@
+#define PRISM2_PCI
+
+/* Host AP driver's support for Intersil Prism2.5 PCI cards is based on
+ * driver patches from Reyk Floeter <reyk@vantronix.net> and
+ * Andy Warner <andyw@pobox.com> */
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/if.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/workqueue.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+
+#include "hostap_wlan.h"
+
+
+static char *version = PRISM2_VERSION " (Jouni Malinen <jkmaline@cc.hut.fi>)";
+static char *dev_info = "hostap_pci";
+
+
+MODULE_AUTHOR("Jouni Malinen");
+MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN "
+ "PCI cards.");
+MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards");
+MODULE_LICENSE("GPL");
+
+
+/* FIX: do we need mb/wmb/rmb with memory operations? */
+
+
+static struct pci_device_id prism2_pci_id_table[] __devinitdata = {
+ /* Intersil Prism3 ISL3872 11Mb/s WLAN Controller */
+ { 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID },
+ /* Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller */
+ { 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID },
+ /* Samsung MagicLAN SWL-2210P */
+ { 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID },
+ { 0 }
+};
+
+
+#ifdef PRISM2_IO_DEBUG
+
+static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ unsigned long flags;
+
+ iface = netdev_priv(dev);
+ local = iface->local;
+
+ spin_lock_irqsave(&local->lock, flags);
+ prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
+ writeb(v, local->mem_start + a);
+ spin_unlock_irqrestore(&local->lock, flags);
+}
+
+static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ unsigned long flags;
+ u8 v;
+
+ iface = netdev_priv(dev);
+ local = iface->local;
+
+ spin_lock_irqsave(&local->lock, flags);
+ v = readb(local->mem_start + a);
+ prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v);
+ spin_unlock_irqrestore(&local->lock, flags);
+ return v;
+}
+
+static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ unsigned long flags;
+
+ iface = netdev_priv(dev);
+ local = iface->local;
+
+ spin_lock_irqsave(&local->lock, flags);
+ prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
+ writew(v, local->mem_start + a);
+ spin_unlock_irqrestore(&local->lock, flags);
+}
+
+static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ unsigned long flags;
+ u16 v;
+
+ iface = netdev_priv(dev);
+ local = iface->local;
+
+ spin_lock_irqsave(&local->lock, flags);
+ v = readw(local->mem_start + a);
+ prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
+ spin_unlock_irqrestore(&local->lock, flags);
+ return v;
+}
+
+#define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
+#define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
+#define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
+#define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
+#define HFA384X_OUTW_DATA(v,a) hfa384x_outw_debug(dev, (a), cpu_to_le16((v)))
+#define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw_debug(dev, (a)))
+
+#else /* PRISM2_IO_DEBUG */
+
+static inline void hfa384x_outb(struct net_device *dev, int a, u8 v)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ iface = netdev_priv(dev);
+ local = iface->local;
+ writeb(v, local->mem_start + a);
+}
+
+static inline u8 hfa384x_inb(struct net_device *dev, int a)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ iface = netdev_priv(dev);
+ local = iface->local;
+ return readb(local->mem_start + a);
+}
+
+static inline void hfa384x_outw(struct net_device *dev, int a, u16 v)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ iface = netdev_priv(dev);
+ local = iface->local;
+ writew(v, local->mem_start + a);
+}
+
+static inline u16 hfa384x_inw(struct net_device *dev, int a)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ iface = netdev_priv(dev);
+ local = iface->local;
+ return readw(local->mem_start + a);
+}
+
+#define HFA384X_OUTB(v,a) hfa384x_outb(dev, (a), (v))
+#define HFA384X_INB(a) hfa384x_inb(dev, (a))
+#define HFA384X_OUTW(v,a) hfa384x_outw(dev, (a), (v))
+#define HFA384X_INW(a) hfa384x_inw(dev, (a))
+#define HFA384X_OUTW_DATA(v,a) hfa384x_outw(dev, (a), cpu_to_le16((v)))
+#define HFA384X_INW_DATA(a) (u16) le16_to_cpu(hfa384x_inw(dev, (a)))
+
+#endif /* PRISM2_IO_DEBUG */
+
+
+static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
+ int len)
+{
+ u16 d_off;
+ u16 *pos;
+
+ d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
+ pos = (u16 *) buf;
+
+ for ( ; len > 1; len -= 2)
+ *pos++ = HFA384X_INW_DATA(d_off);
+
+ if (len & 1)
+ *((char *) pos) = HFA384X_INB(d_off);
+
+ return 0;
+}
+
+
+static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
+{
+ u16 d_off;
+ u16 *pos;
+
+ d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
+ pos = (u16 *) buf;
+
+ for ( ; len > 1; len -= 2)
+ HFA384X_OUTW_DATA(*pos++, d_off);
+
+ if (len & 1)
+ HFA384X_OUTB(*((char *) pos), d_off);
+
+ return 0;
+}
+
+
+/* FIX: This might change at some point.. */
+#include "hostap_hw.c"
+
+static void prism2_pci_cor_sreset(local_info_t *local)
+{
+ struct net_device *dev = local->dev;
+ u16 reg;
+
+ reg = HFA384X_INB(HFA384X_PCICOR_OFF);
+ printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg);
+
+ /* linux-wlan-ng uses extremely long hold and settle times for
+ * COR sreset. A comment in the driver code mentions that the long
+ * delays appear to be necessary. However, at least IBM 22P6901 seems
+ * to work fine with shorter delays.
+ *
+ * Longer delays can be configured by uncommenting following line: */
+/* #define PRISM2_PCI_USE_LONG_DELAYS */
+
+#ifdef PRISM2_PCI_USE_LONG_DELAYS
+ int i;
+
+ HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
+ mdelay(250);
+
+ HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
+ mdelay(500);
+
+ /* Wait for f/w to complete initialization (CMD:BUSY == 0) */
+ i = 2000000 / 10;
+ while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i)
+ udelay(10);
+
+#else /* PRISM2_PCI_USE_LONG_DELAYS */
+
+ HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
+ mdelay(2);
+ HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
+ mdelay(2);
+
+#endif /* PRISM2_PCI_USE_LONG_DELAYS */
+
+ if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) {
+ printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name);
+ }
+}
+
+
+static void prism2_pci_genesis_reset(local_info_t *local, int hcr)
+{
+ struct net_device *dev = local->dev;
+
+ HFA384X_OUTW(0x00C5, HFA384X_PCICOR_OFF);
+ mdelay(10);
+ HFA384X_OUTW(hcr, HFA384X_PCIHCR_OFF);
+ mdelay(10);
+ HFA384X_OUTW(0x0045, HFA384X_PCICOR_OFF);
+ mdelay(10);
+}
+
+
+static struct prism2_helper_functions prism2_pci_funcs =
+{
+ .card_present = NULL,
+ .cor_sreset = prism2_pci_cor_sreset,
+ .dev_open = NULL,
+ .dev_close = NULL,
+ .genesis_reset = prism2_pci_genesis_reset,
+ .hw_type = HOSTAP_HW_PCI,
+};
+
+
+static int prism2_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ unsigned long phymem;
+ void __iomem *mem = NULL;
+ local_info_t *local = NULL;
+ struct net_device *dev = NULL;
+ static int cards_found /* = 0 */;
+ int irq_registered = 0;
+ struct hostap_interface *iface;
+
+ if (pci_enable_device(pdev))
+ return -EIO;
+
+ phymem = pci_resource_start(pdev, 0);
+
+ if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) {
+ printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n");
+ goto err_out_disable;
+ }
+
+ mem = ioremap(phymem, pci_resource_len(pdev, 0));
+ if (mem == NULL) {
+ printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ;
+ goto fail;
+ }
+
+#ifdef PRISM2_BUS_MASTER
+ pci_set_master(pdev);
+#endif /* PRISM2_BUS_MASTER */
+
+ dev = prism2_init_local_data(&prism2_pci_funcs, cards_found);
+ if (dev == NULL)
+ goto fail;
+ iface = netdev_priv(dev);
+ local = iface->local;
+ cards_found++;
+
+ dev->irq = pdev->irq;
+ local->mem_start = mem;
+
+ prism2_pci_cor_sreset(local);
+
+ pci_set_drvdata(pdev, dev);
+
+ if (request_irq(dev->irq, prism2_interrupt, SA_SHIRQ, dev->name,
+ dev)) {
+ printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
+ goto fail;
+ } else
+ irq_registered = 1;
+
+ if (!local->pri_only && prism2_hw_config(dev, 1)) {
+ printk(KERN_DEBUG "%s: hardware initialization failed\n",
+ dev_info);
+ goto fail;
+ }
+
+ printk(KERN_INFO "%s: Intersil Prism2.5 PCI: "
+ "mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq);
+
+ return hostap_hw_ready(dev);
+
+ fail:
+ if (irq_registered && dev)
+ free_irq(dev->irq, dev);
+
+ if (mem)
+ iounmap(mem);
+
+ release_mem_region(phymem, pci_resource_len(pdev, 0));
+
+ err_out_disable:
+ pci_disable_device(pdev);
+ prism2_free_local_data(dev);
+
+ return -ENODEV;
+}
+
+
+static void prism2_pci_remove(struct pci_dev *pdev)
+{
+ struct net_device *dev;
+ struct hostap_interface *iface;
+ void __iomem *mem_start;
+
+ dev = pci_get_drvdata(pdev);
+ iface = netdev_priv(dev);
+
+ /* Reset the hardware, and ensure interrupts are disabled. */
+ prism2_pci_cor_sreset(iface->local);
+ hfa384x_disable_interrupts(dev);
+
+ if (dev->irq)
+ free_irq(dev->irq, dev);
+
+ mem_start = iface->local->mem_start;
+ prism2_free_local_data(dev);
+
+ iounmap(mem_start);
+
+ release_mem_region(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0));
+ pci_disable_device(pdev);
+}
+
+
+#ifdef CONFIG_PM
+static int prism2_pci_suspend(struct pci_dev *pdev, u32 state)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+
+ if (netif_running(dev)) {
+ netif_stop_queue(dev);
+ netif_device_detach(dev);
+ }
+ prism2_suspend(dev);
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, 3);
+
+ return 0;
+}
+
+static int prism2_pci_resume(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+
+ pci_enable_device(pdev);
+ pci_restore_state(pdev);
+ prism2_hw_config(dev, 0);
+ if (netif_running(dev)) {
+ netif_device_attach(dev);
+ netif_start_queue(dev);
+ }
+
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+
+MODULE_DEVICE_TABLE(pci, prism2_pci_id_table);
+
+static struct pci_driver prism2_pci_drv_id = {
+ .name = "prism2_pci",
+ .id_table = prism2_pci_id_table,
+ .probe = prism2_pci_probe,
+ .remove = prism2_pci_remove,
+#ifdef CONFIG_PM
+ .suspend = prism2_pci_suspend,
+ .resume = prism2_pci_resume,
+#endif /* CONFIG_PM */
+ /* Linux 2.4.6 added save_state and enable_wake that are not used here
+ */
+};
+
+
+static int __init init_prism2_pci(void)
+{
+ printk(KERN_INFO "%s: %s\n", dev_info, version);
+
+ return pci_register_driver(&prism2_pci_drv_id);
+}
+
+
+static void __exit exit_prism2_pci(void)
+{
+ pci_unregister_driver(&prism2_pci_drv_id);
+ printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
+}
+
+
+module_init(init_prism2_pci);
+module_exit(exit_prism2_pci);