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         __le32 phy;
  43 };
  44
  45 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
  46 enum carl9170_cab_trigger {
  47         CARL9170_CAB_TRIGGER_EMPTY      = 0,
  48         CARL9170_CAB_TRIGGER_ARMED      = BIT(0),
  49         CARL9170_CAB_TRIGGER_DEFER      = BIT(1),
  50 };
  51 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
  52
  53 enum carl9170_ep0_action {
  54         CARL9170_EP0_NO_ACTION          = 0,
  55         CARL9170_EP0_STALL              = BIT(0),
  56         CARL9170_EP0_TRIGGER            = BIT(1),
  57 };
  58
  59 enum carl9170_mac_reset_state {
  60         CARL9170_MAC_RESET_OFF          = 0,
  61         CARL9170_MAC_RESET_ARMED,
  62         CARL9170_MAC_RESET_RESET,
  63         CARL9170_MAC_RESET_FORCE,
  64 };
  65
  66 enum carl9170_suspend_mode {
  67         CARL9170_HOST_AWAKE                     = 0,
  68         CARL9170_HOST_SUSPENDED,
  69         CARL9170_AWAKE_HOST,
  70 };
  71
  72 /*
  73  * This platform - being an odd 32-bit architecture - prefers to
  74  * have 32-Bit variables.
  75  */
  76
  77 struct firmware_context_struct {
  78         /* timer / clocks */
  79         unsigned int ticks_per_msec;
  80         unsigned int counter;                   /* main() cycles */
  81
  82         /* misc */
  83         unsigned int watchdog_enable;
  84         unsigned int reboot;
  85         unsigned int suspend_mode;
  86
  87         struct {
  88                 /* Host Interface DMA queues */
  89                 struct dma_queue up_queue;      /* used to send frames to the host */
  90                 struct dma_queue down_queue;    /* stores incoming frames from the host */
  91         } pta;
  92
  93         struct {
  94                 /* Hardware DMA queues */
  95                 struct dma_queue tx_queue[__AR9170_NUM_TX_QUEUES];      /* wlan tx queue */
  96                 struct dma_queue tx_retry;
  97                 struct dma_queue rx_queue;                              /* wlan rx queue */
  98
  99                 /* tx aggregate scheduling */
 100                 struct carl9170_tx_superframe *ampdu_prev[__AR9170_NUM_TX_QUEUES];
 101
 102                 /* Hardware DMA queue unstuck/fix detection */
 103                 unsigned int last_tx_desc_num[__AR9170_NUM_TX_QUEUES];
 104                 struct dma_desc *last_tx_desc[__AR9170_NUM_TX_QUEUES];
 105                 unsigned int mac_reset;
 106                 unsigned int soft_int;
 107
 108                 /* rx filter */
 109                 unsigned int rx_filter;
 110
 111                 /* rx statistics */
 112                 unsigned int rx_total;
 113                 unsigned int rx_overruns;
 114
 115                 /* tx sequence control counters */
 116                 unsigned int sequence[CARL9170_INTF_NUM];
 117
 118 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
 119                 /* CAB */
 120                 struct dma_queue cab_queue[CARL9170_INTF_NUM];
 121                 unsigned int cab_queue_len[CARL9170_INTF_NUM];
 122                 unsigned int cab_flush_time;
 123                 enum carl9170_cab_trigger cab_flush_trigger[CARL9170_INTF_NUM];
 124 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 125
 126                 /* tx status */
 127                 unsigned int tx_status_pending,
 128                              tx_status_head_idx,
 129                              tx_status_tail_idx;
 130                 struct carl9170_tx_status tx_status_cache[CARL9170_TX_STATUS_NUM];
 131
 132 #ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
 133                 /* BA(R) Request Handler */
 134                 struct dma_desc *ba_desc;
 135                 struct carl9170_bar_ctx ba_cache[CONFIG_CARL9170FW_BACK_REQS_NUM];
 136                 unsigned int ba_desc_available,
 137                              ba_tail_idx,
 138                              ba_head_idx;
 139 #endif /* CONFIG_CARL9170FW_HANDLE_BACK_REQ */
 140         } wlan;
 141
 142         struct {
 143                 unsigned int config,
 144                              interface_setting,
 145                              alternate_interface_setting,
 146                              device_feature;
 147                 enum carl9170_ep0_action ep0_action;
 148
 149                 void *ep0_txrx_buffer;
 150                 unsigned int ep0_txrx_len,
 151                              ep0_txrx_pos;
 152
 153                 struct ar9170_usb_config *cfg_desc;
 154                 struct ar9170_usb_config *os_cfg_desc;
 155
 156                 /*
 157                  * special buffers for command & response handling
 158                  *
 159                  * the firmware uses a sort of ring-buffer to communicate
 160                  * to the host.
 161                  */
 162                 unsigned int int_pending,
 163                              int_desc_available,
 164                              int_head_index,
 165                              int_tail_index;
 166                 struct dma_desc *int_desc;
 167                 struct carl9170_rsp int_buf[CARL9170_INT_RQ_CACHES];
 168
 169 #ifdef CONFIG_CARL9170FW_DEBUG_USB
 170                 /* USB printf */
 171                 unsigned int put_index;
 172                 uint8_t put_buffer[CARL9170_MAX_CMD_PAYLOAD_LEN];
 173 #endif /* CONFIG_CARL9170FW_DEBUG_USB */
 174
 175         } usb;
 176
 177         struct {
 178 #ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
 179                 /* (cached) ar9170_rf_init */
 180
 181                 /* PHY/RF state */
 182                 unsigned int frequency;
 183                 unsigned int ht_settings;
 184
 185                 struct carl9170_psm psm;
 186 #endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
 187         } phy;
 188
 189 #ifdef CONFIG_CARL9170FW_GPIO_INTERRUPT
 190         struct carl9170_gpio cached_gpio_state;
 191 #endif /*CONFIG_CARL9170FW_GPIO_INTERRUPT */
 192 };
 193
 194 /*
 195  * global firmware context struct.
 196  *
 197  * NOTE: This struct will zeroed out in start()
 198  */
 199 extern struct firmware_context_struct fw;
 200 #endif /* __CARL9170FW_CARL9170_H */