drivers/net/wireless/ath/carl9170/fwdesc.h

   1 /*
   2  * Shared CARL9170 Header
   3  *
   4  * Firmware descriptor format
   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.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; see the file COPYING.  If not, see
  19  * http://www.gnu.org/licenses/.
  20  */
  21
  22 #ifndef __CARL9170_SHARED_FWDESC_H
  23 #define __CARL9170_SHARED_FWDESC_H
  24
  25 /* NOTE: Don't mess with the order of the flags! */
  26 enum carl9170fw_feature_list {
  27         /* Always set */
  28         CARL9170FW_DUMMY_FEATURE,
  29
  30         /*
  31          * Indicates that this image has special boot block which prevents
  32          * legacy drivers to drive the firmware.
  33          */
  34         CARL9170FW_MINIBOOT,
  35
  36         /* usb registers are initialized by the firmware */
  37         CARL9170FW_USB_INIT_FIRMWARE,
  38
  39         /* command traps & notifications are send through EP2 */
  40         CARL9170FW_USB_RESP_EP2,
  41
  42         /* usb download (app -> fw) stream */
  43         CARL9170FW_USB_DOWN_STREAM,
  44
  45         /* usb upload (fw -> app) stream */
  46         CARL9170FW_USB_UP_STREAM,
  47
  48         /* unusable - reserved to flag non-functional debug firmwares */
  49         CARL9170FW_UNUSABLE,
  50
  51         /* AR9170_CMD_RF_INIT, AR9170_CMD_FREQ_START, AR9170_CMD_FREQUENCY */
  52         CARL9170FW_COMMAND_PHY,
  53
  54         /* AR9170_CMD_EKEY, AR9170_CMD_DKEY */
  55         CARL9170FW_COMMAND_CAM,
  56
  57         /* Firmware has a software Content After Beacon Queueing mechanism */
  58         CARL9170FW_WLANTX_CAB,
  59
  60         /* The firmware is capable of responding to incoming BAR frames */
  61         CARL9170FW_HANDLE_BACK_REQ,
  62
  63         /* GPIO Interrupt | CARL9170_RSP_GPIO */
  64         CARL9170FW_GPIO_INTERRUPT,
  65
  66         /* Firmware PSM support | CARL9170_CMD_PSM */
  67         CARL9170FW_PSM,
  68
  69         /* Firmware RX filter | CARL9170_CMD_RX_FILTER */
  70         CARL9170FW_RX_FILTER,
  71
  72         /* Wake up on WLAN */
  73         CARL9170FW_WOL,
  74
  75         /* KEEP LAST */
  76         __CARL9170FW_FEATURE_NUM
  77 };
  78
  79 #define OTUS_MAGIC      "OTAR"
  80 #define MOTD_MAGIC      "MOTD"
  81 #define FIX_MAGIC       "FIX\0"
  82 #define DBG_MAGIC       "DBG\0"
  83 #define CHK_MAGIC       "CHK\0"
  84 #define TXSQ_MAGIC      "TXSQ"
  85 #define LAST_MAGIC      "LAST"
  86
  87 #define CARL9170FW_SET_DAY(d) (((d) - 1) % 31)
  88 #define CARL9170FW_SET_MONTH(m) ((((m) - 1) % 12) * 31)
  89 #define CARL9170FW_SET_YEAR(y) (((y) - 10) * 372)
  90
  91 #define CARL9170FW_GET_DAY(d) (((d) % 31) + 1)
  92 #define CARL9170FW_GET_MONTH(m) ((((m) / 31) % 12) + 1)
  93 #define CARL9170FW_GET_YEAR(y) ((y) / 372 + 10)
  94
  95 #define CARL9170FW_MAGIC_SIZE                   4
  96
  97 struct carl9170fw_desc_head {
  98         u8      magic[CARL9170FW_MAGIC_SIZE];
  99         __le16 length;
 100         u8 min_ver;
 101         u8 cur_ver;
 102 } __packed;
 103 #define CARL9170FW_DESC_HEAD_SIZE                       \
 104         (sizeof(struct carl9170fw_desc_head))
 105
 106 #define CARL9170FW_OTUS_DESC_MIN_VER            6
 107 #define CARL9170FW_OTUS_DESC_CUR_VER            6
 108 struct carl9170fw_otus_desc {
 109         struct carl9170fw_desc_head head;
 110         __le32 feature_set;
 111         __le32 fw_address;
 112         __le32 bcn_addr;
 113         __le16 bcn_len;
 114         __le16 miniboot_size;
 115         __le16 tx_frag_len;
 116         __le16 rx_max_frame_len;
 117         u8 tx_descs;
 118         u8 cmd_bufs;
 119         u8 api_ver;
 120         u8 vif_num;
 121 } __packed;
 122 #define CARL9170FW_OTUS_DESC_SIZE                       \
 123         (sizeof(struct carl9170fw_otus_desc))
 124
 125 #define CARL9170FW_MOTD_STRING_LEN                      24
 126 #define CARL9170FW_MOTD_RELEASE_LEN                     20
 127 #define CARL9170FW_MOTD_DESC_MIN_VER                    1
 128 #define CARL9170FW_MOTD_DESC_CUR_VER                    2
 129 struct carl9170fw_motd_desc {
 130         struct carl9170fw_desc_head head;
 131         __le32 fw_year_month_day;
 132         char desc[CARL9170FW_MOTD_STRING_LEN];
 133         char release[CARL9170FW_MOTD_RELEASE_LEN];
 134 } __packed;
 135 #define CARL9170FW_MOTD_DESC_SIZE                       \
 136         (sizeof(struct carl9170fw_motd_desc))
 137
 138 #define CARL9170FW_FIX_DESC_MIN_VER                     1
 139 #define CARL9170FW_FIX_DESC_CUR_VER                     2
 140 struct carl9170fw_fix_entry {
 141         __le32 address;
 142         __le32 mask;
 143         __le32 value;
 144 } __packed;
 145
 146 struct carl9170fw_fix_desc {
 147         struct carl9170fw_desc_head head;
 148         struct carl9170fw_fix_entry data[0];
 149 } __packed;
 150 #define CARL9170FW_FIX_DESC_SIZE                        \
 151         (sizeof(struct carl9170fw_fix_desc))
 152
 153 #define CARL9170FW_DBG_DESC_MIN_VER                     1
 154 #define CARL9170FW_DBG_DESC_CUR_VER                     3
 155 struct carl9170fw_dbg_desc {
 156         struct carl9170fw_desc_head head;
 157
 158         __le32 bogoclock_addr;
 159         __le32 counter_addr;
 160         __le32 rx_total_addr;
 161         __le32 rx_overrun_addr;
 162         __le32 rx_filter;
 163
 164         /* Put your debugging definitions here */
 165 } __packed;
 166 #define CARL9170FW_DBG_DESC_SIZE                        \
 167         (sizeof(struct carl9170fw_dbg_desc))
 168
 169 #define CARL9170FW_CHK_DESC_MIN_VER                     1
 170 #define CARL9170FW_CHK_DESC_CUR_VER                     2
 171 struct carl9170fw_chk_desc {
 172         struct carl9170fw_desc_head head;
 173         __le32 fw_crc32;
 174         __le32 hdr_crc32;
 175 } __packed;
 176 #define CARL9170FW_CHK_DESC_SIZE                        \
 177         (sizeof(struct carl9170fw_chk_desc))
 178
 179 #define CARL9170FW_TXSQ_DESC_MIN_VER                    1
 180 #define CARL9170FW_TXSQ_DESC_CUR_VER                    1
 181 struct carl9170fw_txsq_desc {
 182         struct carl9170fw_desc_head head;
 183
 184         __le32 seq_table_addr;
 185 } __packed;
 186 #define CARL9170FW_TXSQ_DESC_SIZE                       \
 187         (sizeof(struct carl9170fw_txsq_desc))
 188
 189 #define CARL9170FW_LAST_DESC_MIN_VER                    1
 190 #define CARL9170FW_LAST_DESC_CUR_VER                    2
 191 struct carl9170fw_last_desc {
 192         struct carl9170fw_desc_head head;
 193 } __packed;
 194 #define CARL9170FW_LAST_DESC_SIZE                       \
 195         (sizeof(struct carl9170fw_fix_desc))
 196
 197 #define CARL9170FW_DESC_MAX_LENGTH                      8192
 198
 199 #define CARL9170FW_FILL_DESC(_magic, _length, _min_ver, _cur_ver)       \
 200         .head = {                                                       \
 201                 .magic = _magic,                                        \
 202                 .length = cpu_to_le16(_length),                         \
 203                 .min_ver = _min_ver,                                    \
 204                 .cur_ver = _cur_ver,                                    \
 205         }
 206
 207 static inline void carl9170fw_fill_desc(struct carl9170fw_desc_head *head,
 208                                          u8 magic[CARL9170FW_MAGIC_SIZE],
 209                                          __le16 length, u8 min_ver, u8 cur_ver)
 210 {
 211         head->magic[0] = magic[0];
 212         head->magic[1] = magic[1];
 213         head->magic[2] = magic[2];
 214         head->magic[3] = magic[3];
 215
 216         head->length = length;
 217         head->min_ver = min_ver;
 218         head->cur_ver = cur_ver;
 219 }
 220
 221 #define carl9170fw_for_each_hdr(desc, fw_desc)                          \
 222         for (desc = fw_desc;                                            \
 223              memcmp(desc->magic, LAST_MAGIC, CARL9170FW_MAGIC_SIZE) &&  \
 224              le16_to_cpu(desc->length) >= CARL9170FW_DESC_HEAD_SIZE &&  \
 225              le16_to_cpu(desc->length) < CARL9170FW_DESC_MAX_LENGTH;    \
 226              desc = (void *)((unsigned long)desc + le16_to_cpu(desc->length)))
 227
 228 #define CHECK_HDR_VERSION(head, _min_ver)                               \
 229         (((head)->cur_ver < _min_ver) || ((head)->min_ver > _min_ver))  \
 230
 231 static inline bool carl9170fw_supports(__le32 list, u8 feature)
 232 {
 233         return le32_to_cpu(list) & BIT(feature);
 234 }
 235
 236 static inline bool carl9170fw_desc_cmp(const struct carl9170fw_desc_head *head,
 237                                        const u8 descid[CARL9170FW_MAGIC_SIZE],
 238                                        u16 min_len, u8 compatible_revision)
 239 {
 240         if (descid[0] == head->magic[0] && descid[1] == head->magic[1] &&
 241             descid[2] == head->magic[2] && descid[3] == head->magic[3] &&
 242             !CHECK_HDR_VERSION(head, compatible_revision) &&
 243             (le16_to_cpu(head->length) >= min_len))
 244                 return true;
 245
 246         return false;
 247 }
 248
 249 #define CARL9170FW_MIN_SIZE     32
 250 #define CARL9170FW_MAX_SIZE     16384
 251
 252 static inline bool carl9170fw_size_check(unsigned int len)
 253 {
 254         return (len <= CARL9170FW_MAX_SIZE && len >= CARL9170FW_MIN_SIZE);
 255 }
 256
 257 #endif /* __CARL9170_SHARED_FWDESC_H */