LXR linux/drivers/net/wireless/rsi/rsi

   1/**
   2 * Copyright (c) 2014 Redpine Signals Inc.
   3 *
   4 * Permission to use, copy, modify, and/or distribute this software for any
   5 * purpose with or without fee is hereby granted, provided that the above
   6 * copyright notice and this permission notice appear in all copies.
   7 *
   8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15 */
  16
  17#ifndef __RSI_COMMON_H__
  18#define __RSI_COMMON_H__
  19
  20#include <linux/kthread.h>
  21
  22#define EVENT_WAIT_FOREVER              0
  23#define TA_LOAD_ADDRESS                 0x00
  24#define FIRMWARE_RSI9113                "rsi_91x.fw"
  25#define QUEUE_NOT_FULL                  1
  26#define QUEUE_FULL                      0
  27
  28static inline int rsi_init_event(struct rsi_event *pevent)
  29{
  30        atomic_set(&pevent->event_condition, 1);
  31        init_waitqueue_head(&pevent->event_queue);
  32        return 0;
  33}
  34
  35static inline int rsi_wait_event(struct rsi_event *event, u32 timeout)
  36{
  37        int status = 0;
  38
  39        if (!timeout)
  40                status = wait_event_interruptible(event->event_queue,
  41                                (atomic_read(&event->event_condition) == 0));
  42        else
  43                status = wait_event_interruptible_timeout(event->event_queue,
  44                                (atomic_read(&event->event_condition) == 0),
  45                                timeout);
  46        return status;
  47}
  48
  49static inline void rsi_set_event(struct rsi_event *event)
  50{
  51        atomic_set(&event->event_condition, 0);
  52        wake_up_interruptible(&event->event_queue);
  53}
  54
  55static inline void rsi_reset_event(struct rsi_event *event)
  56{
  57        atomic_set(&event->event_condition, 1);
  58}
  59
  60static inline int rsi_create_kthread(struct rsi_common *common,
  61                                     struct rsi_thread *thread,
  62                                     void *func_ptr,
  63                                     u8 *name)
  64{
  65        init_completion(&thread->completion);
  66        thread->task = kthread_run(func_ptr, common, "%s", name);
  67        if (IS_ERR(thread->task))
  68                return (int)PTR_ERR(thread->task);
  69
  70        return 0;
  71}
  72
  73static inline int rsi_kill_thread(struct rsi_thread *handle)
  74{
  75        atomic_inc(&handle->thread_done);
  76        rsi_set_event(&handle->event);
  77
  78        wait_for_completion(&handle->completion);
  79        return kthread_stop(handle->task);
  80}
  81
  82void rsi_mac80211_detach(struct rsi_hw *hw);
  83u16 rsi_get_connected_channel(struct rsi_hw *adapter);
  84struct rsi_hw *rsi_91x_init(void);
  85void rsi_91x_deinit(struct rsi_hw *adapter);
  86int rsi_read_pkt(struct rsi_common *common, s32 rcv_pkt_len);
  87#endif
  88