dmae.rpl is the system library that provides DMA (Direct Memory Access) functions.
Functions
All uint64_t values returned from functions are timestamps that can be used with DMAEWaitDone.
Timing
| Name
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Prototype
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Description
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| DMAEWaitDone
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bool DMAEWaitDone(uint64_t ts);
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Return true if all goes normally, return false if a time-out occurred. Usage: DMAEWaitDone(DMAECopyMem(mem_ptr, 0, 0x100, DMAE_ENDIAN_8IN32));
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Semaphore
| Name
|
Prototype
|
Description
|
| DMAEInitSemaphore
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uint64_t DMAEInitSemaphore(uint64_t *semaphoreAddr, uint64_t semaphoreCount)
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Initialize a Semaphore to synchronize DMA Engine to the GPU (GPU7)
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| DMAESemaphore
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uint64_t DMAESemaphore(u64 *semaphoreAddr, DMAESemaphoreAction semaphoreAction)
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Create a Semaphore at the specified address
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Memory
| Name
|
Prototype
|
Description
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| DMAECopyMem
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uint64_t DMAECopyMem(void *dst, const void *src, uint32_t size, DMAEEndian endian)
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Copy src to dst (high-level memcpy)
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| DMAECopyMemWait
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bool DMAECopyMemWait(void *dst, const void *src, uint32_t size, DMAEEndian endian)
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Returns true when all goes normally, return false if a time-out occurred
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| DMAEFillMem
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uint64_t DMAEFillMem(void *dst, uint32_t fillData, uint32_t size)
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Fill a virtual memory range with "fillData" (also has DMAEFillMemWait version)
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| DMAEFillMemPhys
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uint64_t DMAEFillMemPhys(uint32_t dst_pa, uint32_t fillData, uint32_t size)
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Fill a physical memory range with "fillData" (also has DMAEFillMemPhysWait version)
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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
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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; |