SceKernelDmacMgr

Direct memory access control Manager

Module

Version	World	Privilege
1.69-3.60	Non-secure	Kernel

Libraries

Known NIDs

Version	Name	World	Visibility	NID
0.990-3.60	SceDmacmgrForDriver	Non-secure	Kernel	0xEB4E3738
0.990	SceDmacmgr	Non-secure	User	not present
3.60	SceDmacmgr	Non-secure	User	0xA9E5B2F0

Data segment layout

Address	Size	Description
0x0000	0x04	void* SceDmacmgrDmac0Reg membase
0x0004	0x04	void* SceDmacmgrDmac1Reg membase
0x0008	0x04	void* SceDmacmgrDmac2Reg membase
0x000C	0x04	void* SceDmacmgrDmac3Reg membase
0x0010	0x04	void* SceDmacmgrDmac4Reg membase
0x0014	0x04	void* SceDmacmgrDmac5Reg membase
0x0018	0x04	void* SceDmacmgrDmac6Reg membase
0x001C	0x1284

Types

typedef SceInt32 SceDmaOpId;

// Using internally
typedef struct SceDmaOpAlloc { // size is 0x60 on FW 0.990
	uint unk_0;
	uint unk_4;
	uint magic; // 0x81005001
	SceUID evfId;
	uint unk_10;
	uint16_t unk_14; // 1
	uint16_t unk_16;
	uint maybe_callback_1;
	uint stat;
	char unk_20[0x14];
	int curchain;
	uint unk_38; // 0
	uint unk_3C;
	const char opname[0x20];
} SceDmaOpAlloc;

typedef struct SceKernelDmaOp { // Size is 0x40-bytes on 3.60
	int data_0x00;
	int data_0x04;
	int data_0x08;
	int data_0x0C;
	void *data_0x10;
	int data_0x14;
	int data_0x18;
	int data_0x1C;
	int data_0x20;
	int data_0x24;
	void *data_0x28;
	int cpu_intr;
	uintptr_t data_0x30;
	SceUID evfid;
	SceUInt16 data_0x38;
	SceUInt16 data_0x3A;
	char *name;
} SceKernelDmaOp;

SceDmacmgrForDriver

sceKernelDmaOpSetupChainForDriver

Version	NID
0.990-3.60	0x167079FC

int sceKernelDmaOpSetupChainForDriver(uint32_t opid, void *pTag, int *a3, uint32_t flag);

sceKernelDmaOpQuitForDriver

Version	NID
0.990-3.60	0x03052D0D

int sceKernelDmaOpQuitForDriver(int opid);

sceKernelDmaOpAllocForDriver

Version	NID
0.990-3.60	0x7CD5088A

Usages:

Module	Name
SceSblSsMgr	SceSblDmac5Common, Dmac5Test_Direct
SceDisplay	SceDisplay
SceAudio	SceSrcMix%d%d
SceCodecEngineWrapper	SceVeneziaDmacMemcpy%02u, SceHwd0DmacMemcpy%02u

Allocate 0x60 bytes of heap.

Return opid = (uint)dma_op_heap_addr >> 1 | 1;

SceDmaOpId sceKernelDmaOpAllocForDriver(const char *name);

sceKernelDmaOpAssignForDriver

Version	NID
0.990-3.60	0xFCE4171A

Executes Dmac5 command.

int sceKernelDmaOpAssignForDriver(SceDmaOpId opid, SceUInt32 unk1, SceUInt32 unk2);

sceKernelDmaOpFreeForDriver

Version	NID
0.990-3.60	0xADFF1186

int sceKernelDmaOpFreeForDriver(int opid);

sceKernelDmaOpConcatenateForDriver

Version	NID
0.990-3.60	0xA4454DEA

sceKernelDmaOpEnQueueForDriver

Version	NID
0.990-3.60	0x543F54CF

int sceKernelDmaOpEnQueueForDriver(int opid);

sceKernelDmaOpDeQueueForDriver

Version	NID
0.990-3.60	0x7433F70F

sceKernelDmaOpSetCallbackForDriver

Version	NID
0.990-3.60	0xCF627CFD

int sceKernelDmaOpSetCallbackForDriver(int opid, int a2, int a3);

sceKernelDmaOpSyncForDriver

Version	NID
0.990-3.60	0x397A917C

int sceKernelDmaOpSyncForDriver(int opid, SceUInt32 op_sync_mode, SceUInt32 timeout, SceInt32 *result);

sceKernelDmacMemcpyForDriver

Version	NID
0.990-3.60	0x00896B11

Synchronous memcpy, wrapper around SceKernelDmacMgr#sceKernelDmacMemcpyAsyncForDriver.

SceInt32 sceKernelDmacMemcpyForDriver(void* dst, void* src, SceSize size);

sceKernelDmacMemsetForDriver

Version	NID
0.990-3.60	0x4BAC049B

sceKernelDmaOpSetupDirectForDriver

Version	NID
0.990-3.60	0x01A599E0

typedef struct SceDmaOpKey {
	char data[0x4C];
} SceDmaOpKey;

int sceKernelDmaOpSetupDirectForDriver(int opid, SceDmaOpKey *a2, int a3);

sceKernelDmacMemcpyAsyncForDriver

Version	NID
0.990	0x6E81B8BF
3.60	not present

sceKernelDmacMemsetAsyncForDriver

Version	NID
0.990	0x6FD7F708
3.60	not present

SceDmacmgrForDriver_BCBB5E85

Version	NID
0.990-3.60	0xBCBB5E85

A big function. TO RE.

SceDmacmgrForDriver_893FCB80

Version	NID
0.990-3.60	0x893FCB80

On FW 0.990 simply returns SCE_KERNEL_ERROR_NOT_IMPLEMENTED.

SceDmacmgr

This library doesn't exist on FW 0.990.

sceDmacMemcpy

Version	NID
3.60	0x9B2FF739

sceDmacMemset

Version	NID
3.60	0xA4C33F11