carlfw/include/carl9170.h

   1 /*
   2  * carl9170 firmware - used by the ar9170 wireless device
   3  *
   4  * Firmware context definition
   5  *
   6  * Copyright 2009, 2010 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 /*
  67  * This platform - being an odd 32-bit architecture - prefers to
  68  * have 32-Bit variables.
  69  */
  70
  71 struct firmware_context_struct {
  72         /* timer / clocks */
  73         unsigned int bogoclock;                 /* supposed to be CPU clock in KHz */
  74         unsigned int counter;                   /* main() cycles */
  75
  76         /* misc */
  77         unsigned int watchdog_enable;
  78         unsigned int reboot;
  79
  80         struct {
  81                 /* Host Interface DMA queues */
  82                 struct dma_queue up_queue;      /* used to send frames to the host */
  83                 struct dma_queue down_queue;    /* stores incoming frames from the host */
  84         } pta;
  85
  86         struct {
  87                 /* Hardware DMA queues */
  88                 struct dma_queue tx_queue[__AR9170_NUM_TX_QUEUES];      /* wlan tx queue */
  89                 struct dma_queue rx_queue;                              /* wlan rx queue */
  90
  91 #ifdef CONFIG_CARL9170FW_DELAYED_TX
  92                 struct dma_queue tx_delay[__AR9170_NUM_TX_QUEUES];
  93                 struct dma_queue tx_retry;
  94                 unsigned int tx_trigger;
  95 #endif /* CONFIG_CARL9170FW_DELAYED_TX */
  96
  97                 /* Hardware DMA queue unstuck/fix detection */
  98                 unsigned int last_tx_desc_num[__AR9170_NUM_TX_QUEUES];
  99                 struct dma_desc *last_tx_desc[__AR9170_NUM_TX_QUEUES];
 100                 unsigned int rx_total;
 101                 unsigned int rx_overruns;
 102                 unsigned int mac_reset;
 103
 104 #ifdef CONFIG_CARL9170FW_CAB_QUEUE
 105                 /* CAB */
 106                 struct dma_queue cab_queue;
 107                 unsigned int cab_queue_len,
 108                              cab_flush_time;
 109                 enum carl9170_cab_trigger cab_flush_trigger;
 110 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 111
 112                 /* tx status */
 113                 unsigned int tx_status_pending,
 114                              tx_status_head_idx,
 115                              tx_status_tail_idx;
 116                 struct carl9170_tx_status tx_status_cache[CARL9170_TX_STATUS_NUM];
 117
 118 #ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
 119                 /* BA(R) Request Handler */
 120                 struct dma_desc *ba_desc;
 121                 struct carl9170_bar_ctx ba_cache[CONFIG_CARL9170FW_BACK_REQS_NUM];
 122                 unsigned int ba_desc_available,
 123                              ba_tail_idx,
 124                              ba_head_idx;
 125 #endif /* CONFIG_CARL9170FW_HANDLE_BACK_REQ */
 126         } wlan;
 127
 128         struct {
 129                 unsigned int config,
 130                              interface_setting,
 131                              alternate_interface_setting;
 132                 enum carl9170_ep0_action ep0_action;
 133
 134                 void *ep0_txrx_buffer;
 135                 unsigned int ep0_txrx_len,
 136                              ep0_txrx_pos;
 137
 138                 struct ar9170_usb_config *cfg_desc;
 139                 struct ar9170_usb_config *os_cfg_desc;
 140
 141                 /*
 142                  * special buffers for command & response handling
 143                  *
 144                  * the firmware uses a sort of ring-buffer to communicate
 145                  * to the host.
 146                  */
 147                 unsigned int int_pending,
 148                              int_desc_available,
 149                              int_head_index,
 150                              int_tail_index;
 151                 struct dma_desc *int_desc;
 152                 struct carl9170_rsp int_buf[CARL9170_INT_RQ_CACHES];
 153
 154 #ifdef CONFIG_CARL9170FW_DEBUG_USB
 155                 /* USB printf */
 156                 unsigned int put_index;
 157                 uint8_t put_buffer[CARL9170_MAX_CMD_PAYLOAD_LEN];
 158 #endif /* CONFIG_CARL9170FW_DEBUG_USB */
 159
 160         } usb;
 161
 162         struct {
 163 #ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
 164                 /* (cached) ar9170_rf_init */
 165
 166                 /* PHY/RF state */
 167                 unsigned int frequency;
 168                 unsigned int ht_settings;
 169
 170 #ifdef CONFIG_CARL9170FW_PSM
 171                 struct carl9170_psm psm;
 172 #endif /* CONFIG_CARL9170FW_PSM */
 173 #endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
 174         } phy;
 175
 176 #ifdef CONFIG_CARL9170FW_GPIO_INTERRUPT
 177         struct carl9170_gpio cached_gpio_state;
 178 #endif /*CONFIG_CARL9170FW_GPIO_INTERRUPT */
 179 };
 180
 181 /*
 182  * global firmware context struct.
 183  *
 184  * NOTE: This struct will zeroed out in start()
 185  */
 186 extern struct firmware_context_struct fw;
 187 #endif /* __CARL9170FW_CARL9170_H */