ArmPkg/ArmDmaLib: add support for fixed host-to-device DMA offset
authorArd Biesheuvel <ard.biesheuvel@linaro.org>
Sat, 12 Nov 2016 13:02:28 +0000 (14:02 +0100)
committerLeif Lindholm <leif.lindholm@linaro.org>
Wed, 30 Nov 2016 16:43:14 +0000 (16:43 +0000)
commitbfe34275a9bf56a7f8ea9d19fe10cbbee599148d
tree9d9997bc52c2e3c450c3d85a0d6365657ddc149f
parentdf8c2668d7277030cf98e7b218549e0466fa5f6b
ArmPkg/ArmDmaLib: add support for fixed host-to-device DMA offset

Some devices, such as the Raspberry Pi3, have a fixed offset between memory
addresses as seen by the host and as seen by the other bus masters. So add
a new PCD that allows this fixed offset to be recorded, and to be used when
returning device addresses from the DmaLib mapping routines.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
ArmPkg/ArmPkg.dec
ArmPkg/Library/ArmDmaLib/ArmDmaLib.c
ArmPkg/Library/ArmDmaLib/ArmDmaLib.inf