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hw/sd/allwinner-sdhost: Use AddressSpace for DMA transfers

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Allow the device to execute the DMA transfers in a different
AddressSpace.

The A10 and H3 SoC keep using the system_memory address space,
but via the proper dma_memory_access() API.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Message-id: 20200814110057.307-1-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2020-08-28 10:02:45 +01:00 • committed by Peter Maydell
parent 9a4670be7f
commit b3aec952bf
4 changed files with 41 additions and 6 deletions
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6
include/hw/sd/allwinner-sdhost.h
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@ -71,6 +71,12 @@ typedef struct AwSdHostState {
/** Interrupt output signal to notify CPU */
qemu_irq irq;
/** Memory region where DMA transfers are done */
MemoryRegion *dma_mr;
/** Address space used internally for DMA transfers */
AddressSpace dma_as;
/** Number of bytes left in current DMA transfer */
uint32_t transfer_cnt;