SceSdif

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SceSdif is a kernel module that is primary responsible for communicating with SD devices. This includes onboard eMMC, game card MMC, wi-fi/bluetooth SDIO devices. To communicate with particular device SceSdif module uses device index (sd_ctx_index)

Device Index Type Description
0 MMC onboard eMMC
1 MMC game card
2 SDIO wi-fi/bluetooth

There is one more index value that closely correlates with device index. This is speculated to be device type index. It is initialized by internal subroutine that does preinitialization (cmd0, cmd8, cmd5_sdio, cmd55, acmd41). Value is typically stored in sd_context_data structure in field dev_type_idx.

Device Type Index Description
0 unknown (invalid ?)
1 MMC
2 SD
3 SDIO

Device type index will be validated when sd_context_part* will be aquired through these functions:


Module

Known NIDs

Version Name World Privilege NID
1.69 SceSdif Non-secure Kernel 0xCA882EE3
3.60 SceSdif ? Kernel 0x2E7C52F7

Libraries

Known NIDs

Version Name World Visibility NID
1.69 SceSdifForDriver Non-secure Kernel 0x96D306FA
3.60 SceSdifForDriver ? Kernel 0x96D306FA

Data segment layout

Address Size Description
0x0000 0x40 unknown
0x0040 0x24C0 sd_context_global eMMC
0x2500 0x24C0 sd_context_global game card
0x49C0 0x24C0 sd_context_global wlan/bt
0x6E80 0x0x398 sd_context_part eMMC
0x7218 0x398 sd_context_part game card
0x75B0 0xC0 custom context used in c1271539
0x7670 0xC0 custom context used in c1271539
0x7730 0xC0 custom context used in c1271539
0x77F0 0xD38 custom context used in aabaa0f0
0x8528 0xD38 custom context used in aabaa0f0
0x9260 0x398 sd_context_part wlan/bt
0x95F8 0x888 unknown
0x9E80 0x118 some wlan/bt data

SceSdifForDriver

typedef struct output_23a4ef01
{
    uint32_t unk_0;
    uint32_t unk_4;
    uint32_t unk_8;
    uint32_t unk_C;
};

typedef struct output_24
{
    uint32_t unk_0;
    uint32_t unk_4;
    uint32_t unk_8;
    uint32_t unk_C;
    uint32_t unk_10;
    uint8_t unk_14;
    uint8_t unk_15;
    uint8_t unk_16;
    uint8_t unk_17;
    uint32_t unk_18;
    uint32_t unk_1C;
    uint32_t unk_20;
    uint32_t unk_24;
};

typedef struct output_76d2b87b
{
    uint32_t unk_0;
    uint32_t unk_4;
    uint16_t unk_8;
};

typedef struct cmd_input // size is 0x240
{
   uint32_t size; // 0x240
   uint32_t unk_4;
   uint32_t command;
   uint32_t argument;
   
   uint8_t data0[0x50];   
   
   struct cmd_input* next_cmd;
   uint32_t unk_64;
   uint32_t unk_68;
   uint32_t unk_6C;
   
   uint32_t unk_70;
   uint32_t unk_74;
   struct sd_context_global* gctx_ptr;
   uint32_t unk_7C;
   
   uint8_t data1[0x1C0];
} cmd_input;

typedef struct sd_context_data // size is 0xC0
{
    struct cmd_input* cmd_ptr;
    struct cmd_input* cmd_ptr_next;
    uint32_t unk_8;
    uint32_t unk_C;
    
    uint32_t dev_type_idx;
    struct sd_context_part* ctx;
    uint32_t unk_18;
    uint32_t unk_1C;
       
    uint8_t data[0xA0];
} sd_context_data;

typedef struct sd_context_part // size is 0x398
{
   struct sd_context_global* gctx_ptr;
   
   uint8_t data[0x38C];
   
   void* unk_390;
   uint32_t unk_394;
} sd_context_part;

typedef struct sd_context_global // size is 0x24C0
{
    struct cmd_input commands[16];
    struct sd_context_data ctx_data;
} sd_context_global;

module_start

Version NID
3.60 0x935cd196 
int module_start();

init

Version NID
3.60 0x0eb0ef86 
int init();

deinit

Version NID
3.60 0xe5e5f42e 
int deinit();

return_error

Version NID
3.60 0x235ad556 
int return_error();

enable_slow_mode

Version NID
3.60 0xf37cf8e5 
int enable_slow_mode();

get_card_insert_state1

Version NID
3.60 0x36a2b01b 
int get_card_insert_state1(int sd_ctx_index);

get_card_insert_state2

Version NID
3.60 0xfd9e5cfa 
int get_card_insert_state2(int sd_ctx_index);

gc_cmd56_response

Version NID
3.60 0x134e06c4 
int gc_cmd56_response(sd_context_part* ctx, char* buffer, int length);

gc_cmd56_request

Version NID
3.60 0xb0996641 
int gc_cmd56_request(sd_context_part* ctx, char* buffer, int length);

get_sd_context_global

Version NID
3.60 0xdc8f52f8 
sd_context_global* get_sd_context_global(int sd_ctx_index);

get_sd_context_part_validate_mmc

Version NID
3.60 0x6a71987f 
sd_context_part* get_sd_context_part_validate_mmc(int sd_ctx_index);

get_sd_context_part_game_cart

Version NID
3.60 0xb9ea5b1e 
sd_context_part* get_sd_context_part_game_cart(int sd_ctx_index);

get_sd_context_part_wlan_bt

Version NID
3.60 0x6a8235fc 
sd_context_part* get_sd_context_part_wlan_bt(int sd_ctx_index);

initialize_sd_context_part

Version NID
3.60 0x22c82e79

this function only initializes devices with sd_ctx_index 0 and 1 returns 0x80320013 on any other sd_ctx_index 

int initialize_sd_context_part(int sd_ctx_index, sd_context_part** result);

wlan_bt_cmd52_sdio

Version NID
3.60 0x3428884d 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx);

wlan_bt_cmd52_sdio

Version NID
3.60 0xe80293ef 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx);

wlan_bt_cmd52_sdio

Version NID
3.60 0xd0f78d9b 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx, int num0, int num1, void* unk2, int num3);

wlan_bt_cmd52_sdio

Version NID
3.60 0x3c4cdc8b 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx, int num0, int num1, void* unk2, int num3);

wlan_bt_cmd52_sdio

Version NID
3.60 0x733bc373 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx, int num);

wlan_bt_cmd52_sdio

Version NID
3.60 0xdece963b 
int wlan_bt_cmd52_sdio(sd_context_part* ctx, int num0, int num1, void* unk2);

wlan_bt_cmd52_sdio

Version NID
3.60 0x5d65e66b 
int wlan_bt_cmd52_sdio(sd_context_part* ctx, int num0, int num1, void* unk2);

wlan_bt_cmd52_sdio

Version NID
3.60 0xbc45c83d 
int wlan_bt_cmd52_sdio(sd_context_part* ctx, int num);

wlan_bt_initialize_custom_context2

Version NID
3.60 0xaabaa0f0

this function can send these commands: cmd3, cmd52_sdio, cmd0, cmd5_sdio, cmd55, acmd41, cmd7, cmd8

this function uses array of 2 custom contexts.

this function can either set device type index to 3 and use custom context for initialization.

or it can use preinitialization (cmd0, cmd8, cmd5_sdio, cmd55, acmd41) and then check that device type index is 3.

if device type index is not 3 then 0x80320017 error is returned. 

int wlan_bt_initialize_custom_context2(int sd_ctx_index, sd_context_part** ctx);

wlan_bt

Version NID
3.60 0x855c95e1 
int wlan_bt(wlan_context* wlan_ctx, void* unk0, void* unk1);

wlan_bt

Version NID
3.60 0x0c66e36f 
int wlan_bt(sd_context_part* ctx, void* unk0);

wlan_bt_cmd7

Version NID
3.60 0xab0222f2 
int wlan_bt_cmd7(sd_context_part* ctx);

wlan_bt_cmd52_sdio

Version NID
3.60 0x55baeb2d 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx);

wlan_bt_cmd52_sdio

Version NID
3.60 0xfe6f3e7b 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx);

wlan_bt_cmd52_sdio

Version NID
3.60 0xf1a24edd 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx);

wlan_bt_cmd52_sdio

Version NID
3.60 0x1847b18c 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx);

wlan_bt_cmd52_sdio

Version NID
3.60 0xd3c1e2b6 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx, int unk0, int unk1, int unk2);

wlan_bt_cmd52_sdio

Version NID
3.60 0x5bac6e70 
int wlan_bt_cmd52_sdio(wlan_context* wlan_ctx, int unk0, int unk1, int unk2);

wlan_bt_cmd52_sdio

Version NID
3.60 0x01e8eb6c 
int wlan_bt_cmd52_sdio(sd_context_part* ctx, char* output, int destLength_100);

wlan_bt_cmd52_sdio

Version NID
3.60 0x763f1075 
int wlan_bt_cmd52_sdio(sd_context_part* ctx);

wlan_bt_initialize_custom_context1

Version NID
3.60 0x53962379

this function is just a wrapper for wlan_bt_initialize_custom_context2 (aabaa0f0) 

int wlan_bt_initialize_custom_context1(int sd_ctx_index);

wlan_bt_cmd0

Version NID
3.60 0x3b6ab29e 
int wlan_bt_cmd0(wlan_context* wlan_ctx, void* unk0, int* result);

wlan_bt_cmd0_cmd52_sdio

Version NID
3.60 0x180e7395 
int wlan_bt_cmd0_cmd52_sdio(wlan_context* wlan_ctx, char* output, int destLength_100);

wlan_bt

Version NID
3.60 0x0f157f49 
int wlan_bt(wlan_context* wlan_ctx);

wlan_bt

Version NID
3.60 0x849e3216 
int wlan_bt(wlan_context* wlan_ctx);

wlan_bt

Version NID
3.60 0xb05eff68 
int wlan_bt(wlan_context *wlan_ctx, int unk0);

sdstor_read_sector_async

Version NID
3.60 0x6f8d529b 
int sdstor_read_sector_async(sd_context_part* ctx, int sector, char* buffer, int nSectors);

sdstor_read_sector

Version NID
3.60 0xb9593652 
int sdstor_read_sector(sd_context_part* ctx, int sector, char* buffer, int nSectors);

sdstor_write_sector_async

Version NID
3.60 0x175543d2 
int sdstor_write_sector_async(sd_context_part* ctx, int sector, char* buffer, int nSectors);

sdstor_write_sector

Version NID
3.60 0xe0781171 
int sdstor_write_sector(sd_context_part* ctx, int sector, char* buffer, int nSectors);

sdstor_copy_ctx

Version NID
3.60 0x23a4ef01 
int sdstor_copy_ctx(sd_context_part* ctx, output_23a4ef01* unk0);

sdstor_cmd0_cmd13

Version NID
3.60 0x6cc8e28d 
int sdstor_cmd0_cmd13(int sd_ctx_index);

sdstor_cmd32_cmd33_cmd38_sdio

Version NID
3.60 0x35ba9df8 
int sdstor_cmd32_cmd33_cmd38_sdio(int sd_ctx_index, int unk0);

sdstor_initialize_sd_context_part2

Version NID
3.60 0xc1271539

this function can execute all initialization commands just as initialize_sd_context_part (22c82e79) function.

these commands include: cmd0, cmd2, cmd3, cmd5_sdio, cmd6, cmd55, acmd41, cmd9, cmd7, cmd16, cmd8

there are couple of differences however:

  • it can execute cmd42 lock/unlock command.
  • it does not check sd_ctx_index argument.
  • it uses array of 3 custom contexts instead of sd_context_part structures.
  • it checks device type index after preinitialization (cmd0, cmd8, cmd5_sdio, cmd55, acmd41)
  • it only initializes device with device type index 2. otherwice 0x80320017 error is returned.
int sdstor_initialize_sd_context_part2(int sd_ctx_index, int* result);

sdstor_cmd6_cmd30

Version NID
3.60 0x995748ea 
int sdstor_cmd6_cmd30(sd_context_part *input, int unk0, int unk1, void *unk2);

sdstor

Version NID
3.60 0xe091ba2e 
int sdstor(sd_context_part* unk, int unk0, int unk1, int* unk2);

sdif_write

Version NID
3.60 0x60642f49 
int sdif_write(sd_context_part *ctx, int unk0, int unk1);

sdif_write

Version NID
3.60 0x0203ecdc 
int sdif_write(sd_context_part *ctx, int unk0, int unk1);

sdif

Version NID
3.60 0x29a71e7f 
int sdif();

sdif_cmd0_cmd13

Version NID
3.60 0x53518827 
int sdif_cmd0_cmd13(sd_context_global *ctx, int *result);

sdif_cmd0

Version NID
3.60 0x475d8e45 
int sdif_cmd0(int sd_ctx_index);

sdif

Version NID
3.60 0x3df7e207 
int sdif(int sd_ctx_index, output_24* result);

sdif

Version NID
3.60 0x76d2b87b 
int sdif(int sd_ctx_index, output_76d2b87b* result);

sdif_cmd_unk

Version NID
3.60 0xb83f7518 
int sdif_cmd_unk(int sd_ctx_index, output_24* result);

sdif_cmd0_cmd16

Version NID
3.60 0xb32776c7 
int sdif_cmd0_cmd16(sd_context_part* ctx, int num_200);

sdif_cmd0_cmd16

Version NID
3.60 0xaf702fe7 
int sdif_cmd0_cmd16(sd_context_part* ctx, int num_200);
Retrieved from "http://wiki.henkaku.xyz/vita/index.php?title=SceSdif&oldid=2539"