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.kin...@intel.com> Cc: Liming Gao <gaolim...@byosoft.com.cn> Cc: Zhiguang Liu <zhiguang....@intel.com> Signed-off-by: Chao Li <lic...@loongson.cn> Acked-by: Michael D Kinney <michael.d.kin...@intel.com> Reviewed-by: Liming Gao <gaolim...@byosoft.com.cn> --- MdePkg/Include/Library/BaseLib.h | 112 +++++++++++++++++++ MdePkg/Library/BaseLib/BaseLib.inf | 1 + MdePkg/Library/BaseLib/LoongArch64/IoCsr.S | 120 +++++++++++++++++++++ 3 files changed, 233 insertions(+) create mode 100644 MdePkg/Library/BaseLib/LoongArch64/IoCsr.S diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h index 4e97368ae2..1fff0fb224 100644 --- a/MdePkg/Include/Library/BaseLib.h +++ b/MdePkg/Include/Library/BaseLib.h @@ -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) // diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf index 7c46306883..4dbe94be71 100644 --- a/MdePkg/Library/BaseLib/BaseLib.inf +++ b/MdePkg/Library/BaseLib/BaseLib.inf @@ -413,6 +413,7 @@ LoongArch64/Csr.c LoongArch64/InternalSwitchStack.c LoongArch64/AsmCsr.S | GCC + LoongArch64/IoCsr.S | GCC LoongArch64/GetInterruptState.S | GCC LoongArch64/EnableInterrupts.S | GCC LoongArch64/DisableInterrupts.S | GCC diff --git a/MdePkg/Library/BaseLib/LoongArch64/IoCsr.S b/MdePkg/Library/BaseLib/LoongArch64/IoCsr.S new file mode 100644 index 0000000000..a659908bc4 --- /dev/null +++ b/MdePkg/Library/BaseLib/LoongArch64/IoCsr.S @@ -0,0 +1,120 @@ +#------------------------------------------------------------------------------ +# +# LoongArch ASM IO CSR operation functions +# +# Copyright (c) 2024, Loongson Technology Corporation Limited. All rights reserved.<BR> +# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +#------------------------------------------------------------------------------ + +ASM_GLOBAL ASM_PFX (IoCsrRead8) +ASM_GLOBAL ASM_PFX (IoCsrRead16) +ASM_GLOBAL ASM_PFX (IoCsrRead32) +ASM_GLOBAL ASM_PFX (IoCsrRead64) + +ASM_GLOBAL ASM_PFX (IoCsrWrite8) +ASM_GLOBAL ASM_PFX (IoCsrWrite16) +ASM_GLOBAL ASM_PFX (IoCsrWrite32) +ASM_GLOBAL ASM_PFX (IoCsrWrite64) + +#/** +# IO CSR read byte operation. +# +# @param[in] Select IO CSR read instruction select values. +# +# @return The return value of iocsrrd.b instruction. +# +#**/ +ASM_PFX (IoCsrRead8): + iocsrrd.b $a0, $a0 + jirl $zero, $ra, 0 + +#/** +# IO CSR read half word operation. +# +# @param[in] Select IO CSR read instruction select values. +# +# @return The return value of iocsrrd.h instruction. +# +#**/ +ASM_PFX (IoCsrRead16): + iocsrrd.h $a0, $a0 + jirl $zero, $ra, 0 + +#/** +# IO CSR read word operation. +# +# @param[in] Select IO CSR read instruction select values. +# +# @return The return value of iocsrrd.w instruction. +# +#**/ +ASM_PFX (IoCsrRead32): + iocsrrd.w $a0, $a0 + jirl $zero, $ra, 0 + +#/** +# 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. +# +#**/ +ASM_PFX (IoCsrRead64): + iocsrrd.d $a0, $a0 + jirl $zero, $ra, 0 + +#/** +# 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. +# +#**/ +ASM_PFX (IoCsrWrite8): + iocsrwr.b $a1, $a0 + jirl $zero, $ra, 0 + +#/** +# 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. +# +#**/ +ASM_PFX (IoCsrWrite16): + iocsrwr.h $a1, $a0 + jirl $zero, $ra, 0 + +#/** +# 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. +# +#**/ +ASM_PFX (IoCsrWrite32): + iocsrwr.w $a1, $a0 + jirl $zero, $ra, 0 + +#/** +# 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. +# +#**/ +ASM_PFX (IoCsrWrite64): + iocsrwr.d $a1, $a0 + jirl $zero, $ra, 0 + .end -- 2.27.0 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#114534): https://edk2.groups.io/g/devel/message/114534 Mute This Topic: https://groups.io/mt/103971647/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
