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OvmfPkg/QemuFwCfg: introduce FW_CFG_IO_DMA_ADDRESS, adapt the package

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Introduce the FW_CFG_IO_DMA_ADDRESS macro for IO Ports 0x514 and 0x518
(most significant and least significant halves of the DMA Address
Register, respectively), and update all references in OvmfPkg.

Cc: Jordan Justen <jordan.l.justen@intel.com>
Suggested-by: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Laszlo Ersek
2017-02-21 14:43:00 +01:00
parent 509e6b5a03
commit ed1a2d42d5
4 changed files with 6 additions and 5 deletions
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4
OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c
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@@ -94,8 +94,8 @@ InternalQemuFwCfgDmaBytes (
//
AccessHigh = (UINT32)RShiftU64 ((UINTN)&Access, 32);
AccessLow = (UINT32)(UINTN)&Access;
IoWrite32 (0x514, SwapBytes32 (AccessHigh));
IoWrite32 (0x518, SwapBytes32 (AccessLow));
IoWrite32 (FW_CFG_IO_DMA_ADDRESS, SwapBytes32 (AccessHigh));
IoWrite32 (FW_CFG_IO_DMA_ADDRESS + 4, SwapBytes32 (AccessLow));
//
// Don't look at Access.Control before starting the transfer.