Dmae.rpl

dmae.rpl is the system librairy that provides direct access to the memory. (DMA = Direct Memory Access)

Functions

Every non-bool functions returns a uint64_t timestamp that can be used with DMAEWaitDone

Wait

Name	Prototype	Description
DMAEWaitDone	`bool DMAEWaitDone(uint64_t ts);`	Return true if all goes normally, return false if a time-out occured E.g of usage: DMAEWaitDone(DMAECopyMem(mem_ptr, 0, 0x100, DMAE_ENDIAN_8IN32));

Semaphore

Name	Prototype	Description
DMAEInitSemaphore	`void DMAEInitSemaphore(uint64_t *semaphoreAddr, uint64_t semaphoreCount)`	Initialize a Semaphore to synchronize DMA Engine to the GPU (GPU7)
DMAESemaphore	`void DMAESemaphore(u64 *semaphoreAddr, DMAESemaphoreAction semaphoreAction)`	Create a Semaphore at the specified address

Memory

Name	Prototype	Description
DMAECopyMem	`void DMAECopyMem(void dst, const void src, uint32_t size, DMAEEndian endian)`	Copy src to dest (kinda high-level memcpy)
DMAECopyMemWait	`bool DMAECopyMemWait(void dst, const void src, uint32_t size, DMAEEndian endian)`	Returns true when all goes normally, return false if a time-out occured
DMAEFillMem	`void DMAEFillMem(void *dst, uint32_t fillData, uint32_t size)`	Fill a virtual memory range with "fillData" (exist in DMAEFillMemWait version)
DMAEFillMemPhys	`void DMAEFillMemPhys(uint32_t dst_pa, uint32_t fillData, uint32_t size`	Fill a physical memory range with "fillData" (exist in DMAEFillMemPhysWait version)

Enumeration

Semaphore

Name

Prototype

DMAESemaphoreAction

typedef enum _DMAESemaphoreAction {
    DMAE_SEMAPHORE_WAIT   = 0x00000000,   ///< Wait before processing next command
    DMAE_SEMAPHORE_SIGNAL = 0x00000001,   ///< Signal after all previous work is done
} DMAESemaphoreAction;

Endian

Name

Prototype

DMAEEndian

typedef enum DMAEEndian {
    DMAE_ENDIAN_NONE  = 0x00000000,   ///< do-nothing
    DMAE_ENDIAN_8IN16 = 0x00000001,   ///< 8IN16 swapping mode. Endian swap in 16-bit int buffer. 
    DMAE_ENDIAN_8IN32 = 0x00000002,   ///< 8IN32 swapping mode. Endian swap in 32-bit int buffer. 
    DMAE_ENDIAN_8IN64 = 0x00000003,   ///< 8IN64 swapping mode. Endian swap in 64-bit int buffer. /// Directly from the SDK
} DMAEEndian;