drivers/net/wireless/rsi/rsi_common.h

   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
  28 static 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
  35 static 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
  49 static 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
  55 static inline void rsi_reset_event(struct rsi_event *event)
  56 {
  57         atomic_set(&event->event_condition, 1);
  58 }
  59
  60 static 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
  73 static 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
  82 void rsi_mac80211_detach(struct rsi_hw *hw);
  83 u16 rsi_get_connected_channel(struct rsi_hw *adapter);
  84 struct rsi_hw *rsi_91x_init(void);
  85 void rsi_91x_deinit(struct rsi_hw *adapter);
  86 int rsi_read_pkt(struct rsi_common *common, s32 rcv_pkt_len);
  87 #endif