diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2019-11-21 09:32:26 +0100 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2019-12-06 14:55:45 +0000 |
| commit | 62a75650e4f918a7aed8e325b8beed37247e4513 (patch) | |
| tree | 68a341d99f8873072d054ae64ccc114ebddfcdae /EmbeddedPkg/EmbeddedPkg.dec | |
| parent | 9caaa79dd7e078ebb4012dde3b3d3a5d451df609 (diff) | |
| download | edk2-62a75650e4f918a7aed8e325b8beed37247e4513.zip edk2-62a75650e4f918a7aed8e325b8beed37247e4513.tar.gz edk2-62a75650e4f918a7aed8e325b8beed37247e4513.tar.bz2 | |
EmbeddedPkg/NonCoherentDmaLib: implement support for DMA range limits
Implement support for driving peripherals with limited DMA ranges to
NonCoherentDmaLib, by adding a device address limit, and taking it,
along with the device offset, into account when allocating or mapping
DMA buffers.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Pete Batard <pete@akeo.ie>
Acked-by: Philippe Mathieu-Daude <philmd@redhat.com>
Acked-by: Leif Lindholm <leif.lindholm@linaro.org>
Diffstat (limited to 'EmbeddedPkg/EmbeddedPkg.dec')
| -rw-r--r-- | EmbeddedPkg/EmbeddedPkg.dec | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/EmbeddedPkg/EmbeddedPkg.dec b/EmbeddedPkg/EmbeddedPkg.dec index 8812a6d..6992280 100644 --- a/EmbeddedPkg/EmbeddedPkg.dec +++ b/EmbeddedPkg/EmbeddedPkg.dec @@ -187,6 +187,12 @@ gEmbeddedTokenSpaceGuid.PcdDmaDeviceOffset|0x0|UINT64|0x0000058
#
+ # Highest address value supported by the device for DMA addressing. Note
+ # that this value should be strictly greater than PcdDmaDeviceOffset.
+ #
+ gEmbeddedTokenSpaceGuid.PcdDmaDeviceLimit|0xFFFFFFFFFFFFFFFF|UINT64|0x000005A
+
+ #
# Selection between DT and ACPI as a default
#
gEmbeddedTokenSpaceGuid.PcdDefaultDtPref|TRUE|BOOLEAN|0x0000059
|