Update InternalQemuFwCfgDmaBytes() to work with DMA Access pointer.
The change provides the flexibility to dynamically allocate the "Access"
when SEV is enabled.
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
IN UINT32 Control\r
)\r
{\r
IN UINT32 Control\r
)\r
{\r
- volatile FW_CFG_DMA_ACCESS Access;\r
+ volatile FW_CFG_DMA_ACCESS LocalAccess;\r
+ volatile FW_CFG_DMA_ACCESS *Access;\r
UINT32 AccessHigh, AccessLow;\r
UINT32 Status;\r
\r
UINT32 AccessHigh, AccessLow;\r
UINT32 Status;\r
\r
- Access.Control = SwapBytes32 (Control);\r
- Access.Length = SwapBytes32 (Size);\r
- Access.Address = SwapBytes64 ((UINTN)Buffer);\r
+ Access = &LocalAccess;\r
+\r
+ Access->Control = SwapBytes32 (Control);\r
+ Access->Length = SwapBytes32 (Size);\r
+ Access->Address = SwapBytes64 ((UINTN)Buffer);\r
\r
//\r
// Delimit the transfer from (a) modifications to Access, (b) in case of a\r
\r
//\r
// Delimit the transfer from (a) modifications to Access, (b) in case of a\r
//\r
// Start the transfer.\r
//\r
//\r
// Start the transfer.\r
//\r
- AccessHigh = (UINT32)RShiftU64 ((UINTN)&Access, 32);\r
- AccessLow = (UINT32)(UINTN)&Access;\r
+ AccessHigh = (UINT32)RShiftU64 ((UINTN)Access, 32);\r
+ AccessLow = (UINT32)(UINTN)Access;\r
IoWrite32 (FW_CFG_IO_DMA_ADDRESS, SwapBytes32 (AccessHigh));\r
IoWrite32 (FW_CFG_IO_DMA_ADDRESS + 4, SwapBytes32 (AccessLow));\r
\r
IoWrite32 (FW_CFG_IO_DMA_ADDRESS, SwapBytes32 (AccessHigh));\r
IoWrite32 (FW_CFG_IO_DMA_ADDRESS + 4, SwapBytes32 (AccessLow));\r
\r
// Wait for the transfer to complete.\r
//\r
do {\r
// Wait for the transfer to complete.\r
//\r
do {\r
- Status = SwapBytes32 (Access.Control);\r
+ Status = SwapBytes32 (Access->Control);\r
ASSERT ((Status & FW_CFG_DMA_CTL_ERROR) == 0);\r
} while (Status != 0);\r
\r
ASSERT ((Status & FW_CFG_DMA_CTL_ERROR) == 0);\r
} while (Status != 0);\r
\r