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

   1 /* SPDX-License-Identifier: ISC */
   2 /*
   3  * Copyright (c) 2005-2011 Atheros Communications Inc.
   4  * Copyright (c) 2011-2015,2017 Qualcomm Atheros, Inc.
   5  */
   6
   7 #ifndef _BMI_H_
   8 #define _BMI_H_
   9
  10 #include "core.h"
  11
  12 /*
  13  * Bootloader Messaging Interface (BMI)
  14  *
  15  * BMI is a very simple messaging interface used during initialization
  16  * to read memory, write memory, execute code, and to define an
  17  * application entry PC.
  18  *
  19  * It is used to download an application to QCA988x, to provide
  20  * patches to code that is already resident on QCA988x, and generally
  21  * to examine and modify state.  The Host has an opportunity to use
  22  * BMI only once during bootup.  Once the Host issues a BMI_DONE
  23  * command, this opportunity ends.
  24  *
  25  * The Host writes BMI requests to mailbox0, and reads BMI responses
  26  * from mailbox0.   BMI requests all begin with a command
  27  * (see below for specific commands), and are followed by
  28  * command-specific data.
  29  *
  30  * Flow control:
  31  * The Host can only issue a command once the Target gives it a
  32  * "BMI Command Credit", using AR8K Counter #4.  As soon as the
  33  * Target has completed a command, it issues another BMI Command
  34  * Credit (so the Host can issue the next command).
  35  *
  36  * BMI handles all required Target-side cache flushing.
  37  */
  38
  39 /* Maximum data size used for BMI transfers */
  40 #define BMI_MAX_DATA_SIZE       256
  41
  42 /* len = cmd + addr + length */
  43 #define BMI_MAX_CMDBUF_SIZE (BMI_MAX_DATA_SIZE + \
  44                         sizeof(u32) + \
  45                         sizeof(u32) + \
  46                         sizeof(u32))
  47
  48 /* Maximum data size used for large BMI transfers */
  49 #define BMI_MAX_LARGE_DATA_SIZE 2048
  50
  51 /* len = cmd + addr + length */
  52 #define BMI_MAX_LARGE_CMDBUF_SIZE (BMI_MAX_LARGE_DATA_SIZE + \
  53                         sizeof(u32) + \
  54                         sizeof(u32) + \
  55                         sizeof(u32))
  56
  57 /* BMI Commands */
  58
  59 enum bmi_cmd_id {
  60         BMI_NO_COMMAND          = 0,
  61         BMI_DONE                = 1,
  62         BMI_READ_MEMORY         = 2,
  63         BMI_WRITE_MEMORY        = 3,
  64         BMI_EXECUTE             = 4,
  65         BMI_SET_APP_START       = 5,
  66         BMI_READ_SOC_REGISTER   = 6,
  67         BMI_READ_SOC_WORD       = 6,
  68         BMI_WRITE_SOC_REGISTER  = 7,
  69         BMI_WRITE_SOC_WORD      = 7,
  70         BMI_GET_TARGET_ID       = 8,
  71         BMI_GET_TARGET_INFO     = 8,
  72         BMI_ROMPATCH_INSTALL    = 9,
  73         BMI_ROMPATCH_UNINSTALL  = 10,
  74         BMI_ROMPATCH_ACTIVATE   = 11,
  75         BMI_ROMPATCH_DEACTIVATE = 12,
  76         BMI_LZ_STREAM_START     = 13, /* should be followed by LZ_DATA */
  77         BMI_LZ_DATA             = 14,
  78         BMI_NVRAM_PROCESS       = 15,
  79 };
  80
  81 #define BMI_NVRAM_SEG_NAME_SZ 16
  82
  83 #define BMI_PARAM_GET_EEPROM_BOARD_ID 0x10
  84 #define BMI_PARAM_GET_FLASH_BOARD_ID 0x8000
  85 #define BMI_PARAM_FLASH_SECTION_ALL 0x10000
  86
  87 /* Dual-band Extended Board ID */
  88 #define BMI_PARAM_GET_EXT_BOARD_ID 0x40000
  89 #define ATH10K_BMI_EXT_BOARD_ID_SUPPORT 0x40000
  90
  91 #define ATH10K_BMI_BOARD_ID_FROM_OTP_MASK   0x7c00
  92 #define ATH10K_BMI_BOARD_ID_FROM_OTP_LSB    10
  93
  94 #define ATH10K_BMI_CHIP_ID_FROM_OTP_MASK    0x18000
  95 #define ATH10K_BMI_CHIP_ID_FROM_OTP_LSB     15
  96
  97 #define ATH10K_BMI_BOARD_ID_STATUS_MASK 0xff
  98 #define ATH10K_BMI_EBOARD_ID_STATUS_MASK 0xff
  99
 100 struct bmi_cmd {
 101         __le32 id; /* enum bmi_cmd_id */
 102         union {
 103                 struct {
 104                 } done;
 105                 struct {
 106                         __le32 addr;
 107                         __le32 len;
 108                 } read_mem;
 109                 struct {
 110                         __le32 addr;
 111                         __le32 len;
 112                         u8 payload[0];
 113                 } write_mem;
 114                 struct {
 115                         __le32 addr;
 116                         __le32 param;
 117                 } execute;
 118                 struct {
 119                         __le32 addr;
 120                 } set_app_start;
 121                 struct {
 122                         __le32 addr;
 123                 } read_soc_reg;
 124                 struct {
 125                         __le32 addr;
 126                         __le32 value;
 127                 } write_soc_reg;
 128                 struct {
 129                 } get_target_info;
 130                 struct {
 131                         __le32 rom_addr;
 132                         __le32 ram_addr; /* or value */
 133                         __le32 size;
 134                         __le32 activate; /* 0=install, but dont activate */
 135                 } rompatch_install;
 136                 struct {
 137                         __le32 patch_id;
 138                 } rompatch_uninstall;
 139                 struct {
 140                         __le32 count;
 141                         __le32 patch_ids[0]; /* length of @count */
 142                 } rompatch_activate;
 143                 struct {
 144                         __le32 count;
 145                         __le32 patch_ids[0]; /* length of @count */
 146                 } rompatch_deactivate;
 147                 struct {
 148                         __le32 addr;
 149                 } lz_start;
 150                 struct {
 151                         __le32 len; /* max BMI_MAX_DATA_SIZE */
 152                         u8 payload[0]; /* length of @len */
 153                 } lz_data;
 154                 struct {
 155                         u8 name[BMI_NVRAM_SEG_NAME_SZ];
 156                 } nvram_process;
 157                 u8 payload[BMI_MAX_CMDBUF_SIZE];
 158         };
 159 } __packed;
 160
 161 union bmi_resp {
 162         struct {
 163                 u8 payload[0];
 164         } read_mem;
 165         struct {
 166                 __le32 result;
 167         } execute;
 168         struct {
 169                 __le32 value;
 170         } read_soc_reg;
 171         struct {
 172                 __le32 len;
 173                 __le32 version;
 174                 __le32 type;
 175         } get_target_info;
 176         struct {
 177                 __le32 patch_id;
 178         } rompatch_install;
 179         struct {
 180                 __le32 patch_id;
 181         } rompatch_uninstall;
 182         struct {
 183                 /* 0 = nothing executed
 184                  * otherwise = NVRAM segment return value
 185                  */
 186                 __le32 result;
 187         } nvram_process;
 188         u8 payload[BMI_MAX_CMDBUF_SIZE];
 189 } __packed;
 190
 191 struct bmi_target_info {
 192         u32 version;
 193         u32 type;
 194 };
 195
 196 struct bmi_segmented_file_header {
 197         __le32 magic_num;
 198         __le32 file_flags;
 199         u8 data[];
 200 };
 201
 202 struct bmi_segmented_metadata {
 203         __le32 addr;
 204         __le32 length;
 205         u8 data[];
 206 };
 207
 208 #define BMI_SGMTFILE_MAGIC_NUM          0x544d4753 /* "SGMT" */
 209 #define BMI_SGMTFILE_FLAG_COMPRESS      1
 210
 211 /* Special values for bmi_segmented_metadata.length (all have high bit set) */
 212
 213 /* end of segmented data */
 214 #define BMI_SGMTFILE_DONE               0xffffffff
 215
 216 /* Board Data segment */
 217 #define BMI_SGMTFILE_BDDATA             0xfffffffe
 218
 219 /* set beginning address */
 220 #define BMI_SGMTFILE_BEGINADDR          0xfffffffd
 221
 222 /* immediate function execution */
 223 #define BMI_SGMTFILE_EXEC               0xfffffffc
 224
 225 /* in jiffies */
 226 #define BMI_COMMUNICATION_TIMEOUT_HZ (3 * HZ)
 227
 228 #define BMI_CE_NUM_TO_TARG 0
 229 #define BMI_CE_NUM_TO_HOST 1
 230
 231 void ath10k_bmi_start(struct ath10k *ar);
 232 int ath10k_bmi_done(struct ath10k *ar);
 233 int ath10k_bmi_get_target_info(struct ath10k *ar,
 234                                struct bmi_target_info *target_info);
 235 int ath10k_bmi_get_target_info_sdio(struct ath10k *ar,
 236                                     struct bmi_target_info *target_info);
 237 int ath10k_bmi_read_memory(struct ath10k *ar, u32 address,
 238                            void *buffer, u32 length);
 239 int ath10k_bmi_write_memory(struct ath10k *ar, u32 address,
 240                             const void *buffer, u32 length);
 241
 242 #define ath10k_bmi_read32(ar, item, val)                                \
 243         ({                                                              \
 244                 int ret;                                                \
 245                 u32 addr;                                               \
 246                 __le32 tmp;                                             \
 247                                                                         \
 248                 addr = host_interest_item_address(HI_ITEM(item));       \
 249                 ret = ath10k_bmi_read_memory(ar, addr, (u8 *)&tmp, 4); \
 250                 if (!ret)                                               \
 251                         *val = __le32_to_cpu(tmp);                      \
 252                 ret;                                                    \
 253          })
 254
 255 #define ath10k_bmi_write32(ar, item, val)                               \
 256         ({                                                              \
 257                 int ret;                                                \
 258                 u32 address;                                            \
 259                 __le32 v = __cpu_to_le32(val);                          \
 260                                                                         \
 261                 address = host_interest_item_address(HI_ITEM(item));    \
 262                 ret = ath10k_bmi_write_memory(ar, address,              \
 263                                               (u8 *)&v, sizeof(v));     \
 264                 ret;                                                    \
 265         })
 266
 267 int ath10k_bmi_execute(struct ath10k *ar, u32 address, u32 param, u32 *result);
 268 int ath10k_bmi_lz_stream_start(struct ath10k *ar, u32 address);
 269 int ath10k_bmi_lz_data(struct ath10k *ar, const void *buffer, u32 length);
 270
 271 int ath10k_bmi_fast_download(struct ath10k *ar, u32 address,
 272                              const void *buffer, u32 length);
 273 int ath10k_bmi_read_soc_reg(struct ath10k *ar, u32 address, u32 *reg_val);
 274 int ath10k_bmi_write_soc_reg(struct ath10k *ar, u32 address, u32 reg_val);
 275 int ath10k_bmi_set_start(struct ath10k *ar, u32 address);
 276
 277 #endif /* _BMI_H_ */