drivers/net/wireless/ath/ath10k/hif.h

   1 /*
   2  * Copyright (c) 2005-2011 Atheros Communications Inc.
   3  * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #ifndef _HIF_H_
  19 #define _HIF_H_
  20
  21 #include <linux/kernel.h>
  22 #include "core.h"
  23
  24 struct ath10k_hif_cb {
  25         int (*tx_completion)(struct ath10k *ar,
  26                              struct sk_buff *wbuf,
  27                              unsigned transfer_id);
  28         int (*rx_completion)(struct ath10k *ar,
  29                              struct sk_buff *wbuf,
  30                              u8 pipe_id);
  31 };
  32
  33 struct ath10k_hif_ops {
  34         /* Send the head of a buffer to HIF for transmission to the target. */
  35         int (*send_head)(struct ath10k *ar, u8 pipe_id,
  36                          unsigned int transfer_id,
  37                          unsigned int nbytes,
  38                          struct sk_buff *buf);
  39
  40         /*
  41          * API to handle HIF-specific BMI message exchanges, this API is
  42          * synchronous and only allowed to be called from a context that
  43          * can block (sleep)
  44          */
  45         int (*exchange_bmi_msg)(struct ath10k *ar,
  46                                 void *request, u32 request_len,
  47                                 void *response, u32 *response_len);
  48
  49         /* Post BMI phase, after FW is loaded. Starts regular operation */
  50         int (*start)(struct ath10k *ar);
  51
  52         /* Clean up what start() did. This does not revert to BMI phase. If
  53          * desired so, call power_down() and power_up() */
  54         void (*stop)(struct ath10k *ar);
  55
  56         int (*map_service_to_pipe)(struct ath10k *ar, u16 service_id,
  57                                    u8 *ul_pipe, u8 *dl_pipe,
  58                                    int *ul_is_polled, int *dl_is_polled);
  59
  60         void (*get_default_pipe)(struct ath10k *ar, u8 *ul_pipe, u8 *dl_pipe);
  61
  62         /*
  63          * Check if prior sends have completed.
  64          *
  65          * Check whether the pipe in question has any completed
  66          * sends that have not yet been processed.
  67          * This function is only relevant for HIF pipes that are configured
  68          * to be polled rather than interrupt-driven.
  69          */
  70         void (*send_complete_check)(struct ath10k *ar, u8 pipe_id, int force);
  71
  72         void (*set_callbacks)(struct ath10k *ar,
  73                               struct ath10k_hif_cb *callbacks);
  74
  75         u16 (*get_free_queue_number)(struct ath10k *ar, u8 pipe_id);
  76
  77         /* Power up the device and enter BMI transfer mode for FW download */
  78         int (*power_up)(struct ath10k *ar);
  79
  80         /* Power down the device and free up resources. stop() must be called
  81          * before this if start() was called earlier */
  82         void (*power_down)(struct ath10k *ar);
  83
  84         int (*suspend)(struct ath10k *ar);
  85         int (*resume)(struct ath10k *ar);
  86 };
  87
  88
  89 static inline int ath10k_hif_send_head(struct ath10k *ar, u8 pipe_id,
  90                                        unsigned int transfer_id,
  91                                        unsigned int nbytes,
  92                                        struct sk_buff *buf)
  93 {
  94         return ar->hif.ops->send_head(ar, pipe_id, transfer_id, nbytes, buf);
  95 }
  96
  97 static inline int ath10k_hif_exchange_bmi_msg(struct ath10k *ar,
  98                                               void *request, u32 request_len,
  99                                               void *response, u32 *response_len)
 100 {
 101         return ar->hif.ops->exchange_bmi_msg(ar, request, request_len,
 102                                              response, response_len);
 103 }
 104
 105 static inline int ath10k_hif_start(struct ath10k *ar)
 106 {
 107         return ar->hif.ops->start(ar);
 108 }
 109
 110 static inline void ath10k_hif_stop(struct ath10k *ar)
 111 {
 112         return ar->hif.ops->stop(ar);
 113 }
 114
 115 static inline int ath10k_hif_map_service_to_pipe(struct ath10k *ar,
 116                                                  u16 service_id,
 117                                                  u8 *ul_pipe, u8 *dl_pipe,
 118                                                  int *ul_is_polled,
 119                                                  int *dl_is_polled)
 120 {
 121         return ar->hif.ops->map_service_to_pipe(ar, service_id,
 122                                                 ul_pipe, dl_pipe,
 123                                                 ul_is_polled, dl_is_polled);
 124 }
 125
 126 static inline void ath10k_hif_get_default_pipe(struct ath10k *ar,
 127                                                u8 *ul_pipe, u8 *dl_pipe)
 128 {
 129         ar->hif.ops->get_default_pipe(ar, ul_pipe, dl_pipe);
 130 }
 131
 132 static inline void ath10k_hif_send_complete_check(struct ath10k *ar,
 133                                                   u8 pipe_id, int force)
 134 {
 135         ar->hif.ops->send_complete_check(ar, pipe_id, force);
 136 }
 137
 138 static inline void ath10k_hif_set_callbacks(struct ath10k *ar,
 139                                             struct ath10k_hif_cb *callbacks)
 140 {
 141         ar->hif.ops->set_callbacks(ar, callbacks);
 142 }
 143
 144 static inline u16 ath10k_hif_get_free_queue_number(struct ath10k *ar,
 145                                                    u8 pipe_id)
 146 {
 147         return ar->hif.ops->get_free_queue_number(ar, pipe_id);
 148 }
 149
 150 static inline int ath10k_hif_power_up(struct ath10k *ar)
 151 {
 152         return ar->hif.ops->power_up(ar);
 153 }
 154
 155 static inline void ath10k_hif_power_down(struct ath10k *ar)
 156 {
 157         ar->hif.ops->power_down(ar);
 158 }
 159
 160 static inline int ath10k_hif_suspend(struct ath10k *ar)
 161 {
 162         if (!ar->hif.ops->suspend)
 163                 return -EOPNOTSUPP;
 164
 165         return ar->hif.ops->suspend(ar);
 166 }
 167
 168 static inline int ath10k_hif_resume(struct ath10k *ar)
 169 {
 170         if (!ar->hif.ops->resume)
 171                 return -EOPNOTSUPP;
 172
 173         return ar->hif.ops->resume(ar);
 174 }
 175
 176 #endif /* _HIF_H_ */