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orinoco.h

/* orinoco.h
 * 
 * Common definitions to all pieces of the various orinoco
 * drivers
 */

#ifndef _ORINOCO_H
#define _ORINOCO_H

#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/netdevice.h>
#include <linux/wireless.h>
#include <linux/version.h>
#include "hermes.h"

/* Workqueue / task queue backwards compatibility stuff */

#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,41)
#include <linux/workqueue.h>
#else
#include <linux/tqueue.h>
#define work_struct tq_struct
#define INIT_WORK INIT_TQUEUE
#define schedule_work schedule_task
#endif

/* Interrupt handler backwards compatibility stuff */
#ifndef IRQ_NONE

#define IRQ_NONE
#define IRQ_HANDLED
typedef void irqreturn_t;

#endif

/* To enable debug messages */
//#define ORINOCO_DEBUG       3

#if (! defined (WIRELESS_EXT)) || (WIRELESS_EXT < 10)
#error "orinoco driver requires Wireless extensions v10 or later."
#endif /* (! defined (WIRELESS_EXT)) || (WIRELESS_EXT < 10) */
#define WIRELESS_SPY          // enable iwspy support

#define ORINOCO_MAX_KEY_SIZE  14
#define ORINOCO_MAX_KEYS      4

struct orinoco_key {
      u16 len;    /* always stored as little-endian */
      char data[ORINOCO_MAX_KEY_SIZE];
} __attribute__ ((packed));

#define ORINOCO_INTEN         ( HERMES_EV_RX | HERMES_EV_ALLOC | HERMES_EV_TX | \
                        HERMES_EV_TXEXC | HERMES_EV_WTERR | HERMES_EV_INFO | \
                        HERMES_EV_INFDROP )


struct orinoco_private {
      void *card; /* Pointer to card dependent structure */
      int (*hard_reset)(struct orinoco_private *);

      /* Synchronisation stuff */
      spinlock_t lock;
      int hw_unavailable;
      struct work_struct reset_work;

      /* driver state */
      int open;
      u16 last_linkstatus;
      int connected;

      /* Net device stuff */
      struct net_device *ndev;
      struct net_device_stats stats;
      struct iw_statistics wstats;

      /* Hardware control variables */
      hermes_t hw;
      u16 txfid;


      /* Capabilities of the hardware/firmware */
      int firmware_type;
#define FIRMWARE_TYPE_AGERE 1
#define FIRMWARE_TYPE_INTERSIL 2
#define FIRMWARE_TYPE_SYMBOL 3
      int has_ibss, has_port3, has_ibss_any, ibss_port;
      int has_wep, has_big_wep;
      int has_mwo;
      int has_pm;
      int has_preamble;
      int has_sensitivity;
      int nicbuf_size;
      u16 channel_mask;
      int broken_disableport;

      /* Configuration paramaters */
      u32 iw_mode;
      int prefer_port3;
      u16 wep_on, wep_restrict, tx_key;
      struct orinoco_key keys[ORINOCO_MAX_KEYS];
      int bitratemode;
      char nick[IW_ESSID_MAX_SIZE+1];
      char desired_essid[IW_ESSID_MAX_SIZE+1];
      u16 frag_thresh, mwo_robust;
      u16 channel;
      u16 ap_density, rts_thresh;
      u16 pm_on, pm_mcast, pm_period, pm_timeout;
      u16 preamble;
#ifdef WIRELESS_SPY
      int               spy_number;
      u_char                  spy_address[IW_MAX_SPY][ETH_ALEN];
      struct iw_quality spy_stat[IW_MAX_SPY];
#endif

      /* Configuration dependent variables */
      int port_type, createibss;
      int promiscuous, mc_count;
};

#ifdef ORINOCO_DEBUG
extern int orinoco_debug;
#define DEBUG(n, args...) do { if (orinoco_debug>(n)) printk(KERN_DEBUG args); } while(0)
#else
#define DEBUG(n, args...) do { } while (0)
#endif      /* ORINOCO_DEBUG */

#define TRACE_ENTER(devname) DEBUG(2, "%s: -> " __FUNCTION__ "()\n", devname);
#define TRACE_EXIT(devname)  DEBUG(2, "%s: <- " __FUNCTION__ "()\n", devname);

extern struct net_device *alloc_orinocodev(int sizeof_card,
                                 int (*hard_reset)(struct orinoco_private *));
extern int __orinoco_up(struct net_device *dev);
extern int __orinoco_down(struct net_device *dev);
extern int orinoco_stop(struct net_device *dev);
extern int orinoco_reinit_firmware(struct net_device *dev);
extern irqreturn_t orinoco_interrupt(int irq, void * dev_id, struct pt_regs *regs);

/********************************************************************/
/* Locking and synchronization functions                            */
/********************************************************************/

/* These functions *must* be inline or they will break horribly on
 * SPARC, due to its weird semantics for save/restore flags. extern
 * inline should prevent the kernel from linking or module from
 * loading if they are not inlined. */
extern inline int orinoco_lock(struct orinoco_private *priv,
                         unsigned long *flags)
{
      spin_lock_irqsave(&priv->lock, *flags);
      if (priv->hw_unavailable) {
            printk(KERN_DEBUG "orinoco_lock() called with hw_unavailable (dev=%p)\n",
                   priv->ndev);
            spin_unlock_irqrestore(&priv->lock, *flags);
            return -EBUSY;
      }
      return 0;
}

extern inline void orinoco_unlock(struct orinoco_private *priv,
                          unsigned long *flags)
{
      spin_unlock_irqrestore(&priv->lock, *flags);
}

#endif /* _ORINOCO_H */

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