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MdePkg: Add IOCSR operation for LoongArch

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Add IoCsrRead8, IoCsrRead16, IoCsrRead32, IoCsrRead64, IoCsrWrite8,
IoCsrWrite16, IoCsrWrite32, IoCsrWrite64 to operate the IOCSR registers
of LoongArch architecture.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Signed-off-by: Chao Li <lichao@loongson.cn>
Acked-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
This commit is contained in:
Chao Li
2023-10-12 11:35:11 +08:00
committed by Liming Gao
parent 0565a8e885
commit bc0b418cba
3 changed files with 233 additions and 0 deletions
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112
MdePkg/Include/Library/BaseLib.h
View File

@@ -396,6 +396,118 @@ CsrXChg (
IN UINTN Mask
);
/**
IO CSR read byte operation.
@param[in] Select IO CSR read instruction select values.
@return The return value of iocsrrd.b instruction.
**/
UINT8
IoCsrRead8 (
IN UINTN Select
);
/**
IO CSR read half word operation.
@param[in] Select IO CSR read instruction select values.
@return The return value of iocsrrd.h instruction.
**/
UINT16
IoCsrRead16 (
IN UINTN Select
);
/**
IO CSR read word operation.
@param[in] Select IO CSR read instruction select values.
@return The return value of iocsrrd.w instruction.
**/
UINT32
IoCsrRead32 (
IN UINTN Select
);
/**
IO CSR read double word operation. Only for LoongArch64.
@param[in] Select IO CSR read instruction select values.
@return The return value of iocsrrd.d instruction.
**/
UINT64
IoCsrRead64 (
IN UINTN Select
);
/**
IO CSR write byte operation.
@param[in] Select IO CSR write instruction select values.
@param[in] Value The iocsrwr.b will write the value.
@return VOID.
**/
VOID
IoCsrWrite8 (
IN UINTN Select,
IN UINT8 Value
);
/**
IO CSR write half word operation.
@param[in] Select IO CSR write instruction select values.
@param[in] Value The iocsrwr.h will write the value.
@return VOID.
**/
VOID
IoCsrWrite16 (
IN UINTN Select,
IN UINT16 Value
);
/**
IO CSR write word operation.
@param[in] Select IO CSR write instruction select values.
@param[in] Value The iocsrwr.w will write the value.
@return VOID.
**/
VOID
IoCsrWrite32 (
IN UINTN Select,
IN UINT32 Value
);
/**
IO CSR write double word operation. Only for LoongArch64.
@param[in] Select IO CSR write instruction select values.
@param[in] Value The iocsrwr.d will write the value.
@return VOID.
**/
VOID
IoCsrWrite64 (
IN UINTN Select,
IN UINT64 Value
);
#endif // defined (MDE_CPU_LOONGARCH64)
//