carlfw/include/carl9170.h

   1 /*
   2  * carl9170 firmware - used by the ar9170 wireless device
   3  *
   4  * Firmware context definition
   5  *
   6  * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #ifndef __CARL9170FW_CARL9170_H
  24 #define __CARL9170FW_CARL9170_H
  25
  26 #include "generated/autoconf.h"
  27 #include "version.h"
  28 #include "config.h"
  29 #include "types.h"
  30 #include "compiler.h"
  31 #include "fwcmd.h"
  32 #include "hw.h"
  33 #include "dma.h"
  34 #include "usb.h"
  35 #include "cmd.h"
  36
  37 struct carl9170_bar_ctx {
  38         uint8_t ta[6];
  39         uint8_t ra[6];
  40         __le16 start_seq_num;
  41         __le16 control;
  42 };
  43
  44 enum carl9170_cab_trigger {
  45         CARL9170_CAB_TRIGGER_EMPTY      = 0,
  46         CARL9170_CAB_TRIGGER_ARMED      = BIT(0),
  47         CARL9170_CAB_TRIGGER_DEFER      = BIT(1),
  48 };
  49
  50 enum carl9170_ep0_action {
  51         CARL9170_EP0_NO_ACTION          = 0,
  52         CARL9170_EP0_STALL              = BIT(0),
  53         CARL9170_EP0_TRIGGER            = BIT(1),
  54 };
  55
  56 enum carl9170_mac_reset_state {
  57         CARL9170_MAC_RESET_OFF          = 0,
  58         CARL9170_MAC_RESET_ARMED,
  59         CARL9170_MAC_RESET_RESET,
  60         CARL9170_MAC_RESET_FORCE,
  61 };
  62
  63 enum carl9170_suspend_mode {
  64         CARL9170_HOST_AWAKE                     = 0,
  65         CARL9170_HOST_SUSPENDED,
  66         CARL9170_AWAKE_HOST,
  67 };
  68
  69 enum carl9170_phy_state {
  70         CARL9170_PHY_OFF                = 0,
  71         CARL9170_PHY_ON
  72 };
  73
  74 typedef void (*fw_desc_callback_t)(void *, const bool);
  75
  76 /*
  77  * This platform - being an odd 32-bit architecture - prefers to
  78  * have 32-Bit variables.
  79  */
  80
  81 struct firmware_context_struct {
  82         /* timer / clocks */
  83         unsigned int ticks_per_usec;
  84         unsigned int counter;                   /* main() cycles */
  85
  86         /* misc */
  87         unsigned int watchdog_enable;
  88         unsigned int reboot;
  89         unsigned int suspend_mode;
  90
  91         struct {
  92                 /* Host Interface DMA queues */
  93                 struct dma_queue up_queue;      /* used to send frames to the host */
  94                 struct dma_queue down_queue;    /* stores incoming frames from the host */
  95         } pta;
  96
  97         struct {
  98                 /* Hardware DMA queues */
  99                 struct dma_queue tx_queue[__AR9170_NUM_TX_QUEUES];      /* wlan tx queue */
 100                 struct dma_queue tx_retry;
 101                 struct dma_queue rx_queue;                              /* wlan rx queue */
 102
 103                 /* tx aggregate scheduling */
 104                 struct carl9170_tx_superframe *ampdu_prev[__AR9170_NUM_TX_QUEUES];
 105
 106                 /* Hardware DMA queue unstuck/fix detection */
 107                 unsigned int last_super_num[__AR9170_NUM_TX_QUEUES];
 108                 struct carl9170_tx_superframe *last_super[__AR9170_NUM_TX_QUEUES];
 109                 unsigned int mac_reset;
 110                 unsigned int soft_int;
 111
 112                 /* rx filter */
 113                 unsigned int rx_filter;
 114
 115                 /* tx sequence control counters */
 116                 unsigned int sequence[CARL9170_INTF_NUM];
 117
 118                 /* CAB */
 119                 struct dma_queue cab_queue[CARL9170_INTF_NUM];
 120                 unsigned int cab_queue_len[CARL9170_INTF_NUM];
 121                 unsigned int cab_flush_time;
 122                 enum carl9170_cab_trigger cab_flush_trigger[CARL9170_INTF_NUM];
 123
 124                 /* tx status */
 125                 unsigned int tx_status_pending,
 126                              tx_status_head_idx,
 127                              tx_status_tail_idx;
 128                 struct carl9170_tx_status tx_status_cache[CARL9170_TX_STATUS_NUM];
 129
 130                 /* internal descriptor for use within the service routines */
 131                 struct dma_desc *fw_desc;
 132                 unsigned int fw_desc_available;
 133                 void *fw_desc_data;
 134                 fw_desc_callback_t fw_desc_callback;
 135
 136                 /* BA(R) Request Handler */
 137                 struct carl9170_bar_ctx ba_cache[CONFIG_CARL9170FW_BACK_REQS_NUM];
 138                 unsigned int ba_tail_idx,
 139                              ba_head_idx,
 140                              queued_ba;
 141
 142                 unsigned int queued_bar;
 143         } wlan;
 144
 145         struct {
 146                 unsigned int config,
 147                              interface_setting,
 148                              alternate_interface_setting,
 149                              device_feature;
 150                 enum carl9170_ep0_action ep0_action;
 151
 152                 void *ep0_txrx_buffer;
 153                 unsigned int ep0_txrx_len,
 154                              ep0_txrx_pos;
 155
 156                 struct ar9170_usb_config *cfg_desc;
 157                 struct ar9170_usb_config *os_cfg_desc;
 158
 159                 /*
 160                  * special buffers for command & response handling
 161                  *
 162                  * the firmware uses a sort of ring-buffer to communicate
 163                  * to the host.
 164                  */
 165                 unsigned int int_pending,
 166                              int_desc_available,
 167                              int_head_index,
 168                              int_tail_index;
 169                 struct dma_desc *int_desc;
 170                 struct carl9170_rsp int_buf[CARL9170_INT_RQ_CACHES];
 171
 172 #ifdef CONFIG_CARL9170FW_DEBUG_USB
 173                 /* USB printf */
 174                 unsigned int put_index;
 175                 uint8_t put_buffer[CARL9170_MAX_CMD_PAYLOAD_LEN];
 176 #endif /* CONFIG_CARL9170FW_DEBUG_USB */
 177
 178         } usb;
 179
 180         struct {
 181 #ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
 182                 /* (cached) ar9170_rf_init */
 183
 184                 /* PHY/RF state */
 185                 unsigned int frequency;
 186                 unsigned int ht_settings;
 187
 188                 enum carl9170_phy_state state;
 189                 struct carl9170_psm psm;
 190 #endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
 191         } phy;
 192
 193         unsigned int tally_clock;
 194         struct carl9170_tally_rsp tally;
 195         unsigned int tx_time;
 196
 197 #ifdef CONFIG_CARL9170FW_WOL
 198         struct {
 199                 struct carl9170_wol_cmd cmd;
 200                 unsigned int last_beacon;
 201                 unsigned int lost_null;
 202                 unsigned int last_null;
 203                 bool wake_up;
 204         } wol;
 205 #endif /* CONFIG_CARL9170FW_WOL */
 206
 207 #ifdef CONFIG_CARL9170FW_GPIO_INTERRUPT
 208         struct carl9170_gpio cached_gpio_state;
 209 #endif /*CONFIG_CARL9170FW_GPIO_INTERRUPT */
 210 };
 211
 212 /*
 213  * global firmware context struct.
 214  *
 215  * NOTE: This struct will zeroed out in start()
 216  */
 217 extern struct firmware_context_struct fw;
 218 #endif /* __CARL9170FW_CARL9170_H */