From nobody Thu Mar 28 19:14:14 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+96279+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+96279+1787277+3901457@groups.io ARC-Seal: i=1; a=rsa-sha256; t=1668157965; cv=none; d=zohomail.com; s=zohoarc; b=TsKVLvmGFMkreW70fNy+L5BMJ12isuVBp7ad/b1irNIvmhOd3RsygzX6zGRBXrHsHpzFvlgHCQCKQq5PpQSlkarTsVbxUFYYgvFXnxb3UGyciHPoTlQMMRVE9mwp/QJg1KiVSs1vyphI43IdjZLkImoN29K2n9FPe2Wh7jDcYkk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1668157965; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=OMZw6Emv/uQR5nPIYEfVgES0YQucg+p7Xckkfz7zk7w=; b=RjcfUiCfCI/35ZA5liRvIw3bp7zURErLpWCdvH4cb80qBPFGzRNkjZQO0NrqRdlXKO0ejJnq2tMLuacGlY/Aujv8icem2UzaeysYNViup/zH/f6ita3d7uT7dI3wllFGx+QRvlwHgYPuZ9auQaEPL9zmm3Pu2KzMYaJX4w4DxHs= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+96279+1787277+3901457@groups.io Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1668157965594192.7228195972425; Fri, 11 Nov 2022 01:12:45 -0800 (PST) Return-Path: X-Received: by 127.0.0.2 with SMTP id ixY6YY1788612xmofRlddbgT; Fri, 11 Nov 2022 01:12:45 -0800 X-Received: from loongson.cn (loongson.cn [114.242.206.163]) by mx.groups.io with SMTP id smtpd.web08.3551.1668157963687024175 for ; Fri, 11 Nov 2022 01:12:44 -0800 X-Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8CxjdoKEm5jlRMGAA--.18816S3; Fri, 11 Nov 2022 17:12:42 +0800 (CST) X-Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8BxFlcAEm5jXc0QAA--.27651S11; Fri, 11 Nov 2022 17:12:41 +0800 (CST) From: "xianglai" To: devel@edk2.groups.io Cc: Bibo Mao , Chao Li , Leif Lindholm , Liming Gao , Michael D Kinney Subject: [edk2-devel] [edk2-platforms][PATCH V5 09/15] Platform/Loongson: Add PciCpuIoDxe driver. Date: Fri, 11 Nov 2022 17:12:24 +0800 Message-Id: In-Reply-To: References: MIME-Version: 1.0 X-CM-TRANSID: AQAAf8BxFlcAEm5jXc0QAA--.27651S11 X-CM-SenderInfo: 5ol0xt5qjotxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBjvAXoWfXrW3tF13CrW8Cw13AFyftFb_yoW5Zr43Ao W093yIvws8Jw1rGrZ5C3sYya17XFnrWFsaqF4rAF1UWa1qqrn8Ka4rX3WUG34rt3yDuFWD Ja4UX3yxJrsYqa4fn29KB7ZKAUJUUUU7529EdanIXcx71UUUUU7KY7ZEXasCq-sGcSsGvf J3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnRJU UUym1xkIjI8I6I8E6xAIw20EY4v20xvaj40_Wr0E3s1l8cAvFVAK0II2c7xJM28CjxkF64 kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW7JVWDJwA2z4x0Y4vE2Ix0cI8IcVCY 1x0267AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv6x kF7I0E14v26F4UJVW0owAaw2AFwI0_Jrv_JF1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAq jxCEc2xF0cIa020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E74AGY7Cv6c x26rWlOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JMxAIw28IcxkI7VAKI48J MxAIw28IcVCjz48v1sIEY20_WwCFx2IqxVCFs4IE7xkEbVWUJVW8JwCFI7km07C267AKxV WUAVWUtwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF 67kF1VAFwI0_JF0_Jw1lIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVW5JVW7JwCI42 IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF 0xvEx4A2jsIE14v26r4UJVWxJr1lIxAIcVC2z280aVCY1x0267AKxVW8Jr0_Cr1UYxBIda VFxhVjvjDU0xZFpf9x0zRByIUUUUUU= Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,lixianglai@loongson.cn X-Gm-Message-State: a2LwhuBF0bfVoTOWWUnnbUEJx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1668157965; bh=HFPGoaCCzwpGkSeDE+Xot/u/zFP3vTC5PHMfDA/gl6E=; h=Cc:Date:From:Reply-To:Subject:To; b=aptuNL+XWLQs5ry5rQrZFu00fTbVBxXmO0cCX0ikSqSEuu1ANHfIn7vCgeUogtrsnf9 FcG6UZhNQ8PVyyM39hnDLnk+7i+8qB1vmfNeLhbk/bkamcOxlXV1yv/dPB6rJu3aaDkwQ FU7b10zJ1d066n459aOxzjxlweDCv70dhBk= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1668157966479100034 Content-Type: text/plain; charset="utf-8" Add PCI CpuIo protocol.there is no fix translation offset between I/O port accesses and MMIO accesses. Add PciCpuIo2Dxe driver to implement EFI_CPU_IO2_PROTOCOL to add the translation for IO access. REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3D4054 Cc: Bibo Mao Cc: Chao Li Cc: Leif Lindholm Cc: Liming Gao Cc: Michael D Kinney Signed-off-by: xianglai li Reviewed-by: Chao Li --- .../Drivers/PciCpuIo2Dxe/PciCpuIo2Dxe.c | 538 ++++++++++++++++++ .../Drivers/PciCpuIo2Dxe/PciCpuIo2Dxe.h | 207 +++++++ .../Drivers/PciCpuIo2Dxe/PciCpuIo2Dxe.inf | 44 ++ 3 files changed, 789 insertions(+) create mode 100644 Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe= /PciCpuIo2Dxe.c create mode 100644 Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe= /PciCpuIo2Dxe.h create mode 100644 Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe= /PciCpuIo2Dxe.inf diff --git a/Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe/PciCpu= Io2Dxe.c b/Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe/PciCpuIo= 2Dxe.c new file mode 100644 index 0000000000..25417ff101 --- /dev/null +++ b/Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe/PciCpuIo2Dxe.c @@ -0,0 +1,538 @@ +/** @file + Produces the CPU I/O 2 Protocol. + + Copyright (c) 2022 Loongson Technology Corporation Limited. All rights r= eserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include + +#include + +#include +#include +#include +#include +#include +#include "PciCpuIo2Dxe.h" + +// +// Handle for the CPU I/O 2 Protocol +// +STATIC EFI_HANDLE mHandle =3D NULL; + +// +// Lookup table for increment values based on transfer widths +// +STATIC CONST UINT8 mInStride[] =3D { + 1, // EfiCpuIoWidthUint8 + 2, // EfiCpuIoWidthUint16 + 4, // EfiCpuIoWidthUint32 + 8, // EfiCpuIoWidthUint64 + 0, // EfiCpuIoWidthFifoUint8 + 0, // EfiCpuIoWidthFifoUint16 + 0, // EfiCpuIoWidthFifoUint32 + 0, // EfiCpuIoWidthFifoUint64 + 1, // EfiCpuIoWidthFillUint8 + 2, // EfiCpuIoWidthFillUint16 + 4, // EfiCpuIoWidthFillUint32 + 8 // EfiCpuIoWidthFillUint64 +}; + +// +// Lookup table for increment values based on transfer widths +// +STATIC CONST UINT8 mOutStride[] =3D { + 1, // EfiCpuIoWidthUint8 + 2, // EfiCpuIoWidthUint16 + 4, // EfiCpuIoWidthUint32 + 8, // EfiCpuIoWidthUint64 + 1, // EfiCpuIoWidthFifoUint8 + 2, // EfiCpuIoWidthFifoUint16 + 4, // EfiCpuIoWidthFifoUint32 + 8, // EfiCpuIoWidthFifoUint64 + 0, // EfiCpuIoWidthFillUint8 + 0, // EfiCpuIoWidthFillUint16 + 0, // EfiCpuIoWidthFillUint32 + 0 // EfiCpuIoWidthFillUint64 +}; + +/** + Check parameters to a CPU I/O 2 Protocol service request. + + The I/O operations are carried out exactly as requested. The caller is r= esponsible + for satisfying any alignment and I/O width restrictions that a PI System= on a + platform might require. For example on some platforms, width requests of + EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, = will + be handled by the driver. + + @param[in] MmioOperation TRUE for an MMIO operation, FALSE for I/O Port= operation. + @param[in] Width Signifies the width of the I/O or Memory opera= tion. + @param[in] Address The base address of the I/O operation. + @param[in] Count The number of I/O operations to perform. The n= umber of + bytes moved is Width size * Count, starting at= Address. + @param[in] Buffer For read operations, the destination buffer to= store the results. + For write operations, the source buffer from w= hich to write data. + + @retval EFI_SUCCESS The parameters for this request pass the = checks. + @retval EFI_INVALID_PARAMETER Width is invalid for this PI system. + @retval EFI_INVALID_PARAMETER Buffer is NULL. + @retval EFI_UNSUPPORTED The Buffer is not aligned for the given W= idth. + @retval EFI_UNSUPPORTED The address range specified by Address, W= idth, + and Count is not valid for this PI system. +**/ +EFI_STATUS +CpuIoCheckParameter ( + IN BOOLEAN MmioOperation, + IN EFI_CPU_IO_PROTOCOL_WIDTH Width, + IN UINT64 Address, + IN UINTN Count, + IN VOID *Buffer + ) +{ + UINT64 MaxCount; + UINT64 Limit; + + // + // Check to see if Buffer is NULL + // + if (Buffer =3D=3D NULL) { + return EFI_INVALID_PARAMETER; + } + + // + // Check to see if Width is in the valid range + // + if ((UINT32)Width >=3D EfiCpuIoWidthMaximum) { + return EFI_INVALID_PARAMETER; + } + + // + // For FIFO type, the target address won't increase during the access, + // so treat Count as 1 + // + if ((Width >=3D EfiCpuIoWidthFifoUint8) + && (Width <=3D EfiCpuIoWidthFifoUint64)) + { + Count =3D 1; + } + + // + // Check to see if Width is in the valid range for I/O Port operations + // + Width =3D (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03); + if ((!MmioOperation) + && (Width =3D=3D EfiCpuIoWidthUint64)) + { + return EFI_INVALID_PARAMETER; + } + + // + // Check to see if Address is aligned + // + if ((Address & (UINT64) (mInStride[Width] - 1)) !=3D 0) { + return EFI_UNSUPPORTED; + } + + // + // Check to see if any address associated with this transfer exceeds the= maximum + // allowed address. The maximum address implied by the parameters passe= d in is + // Address + Size * Count. If the following condition is met, then the = transfer + // is not supported. + // + // Address + Size * Count > (MmioOperation ? MAX_ADDRESS : MAX_IO_POR= T_ADDRESS) + 1 + // + // Since MAX_ADDRESS can be the maximum integer value supported by the C= PU and Count + // can also be the maximum integer value supported by the CPU, this range + // check must be adjusted to avoid all overflow conditions. + // + // The following form of the range check is equivalent but assumes that + // MAX_ADDRESS and MAX_IO_PORT_ADDRESS are of the form (2^n - 1). + // + Limit =3D (MmioOperation ? MAX_ADDRESS : MAX_IO_PORT_ADDRESS); + if (Count =3D=3D 0) { + if (Address > Limit) { + return EFI_UNSUPPORTED; + } + } else { + MaxCount =3D RShiftU64 (Limit, Width); + if (MaxCount < (Count - 1)) { + return EFI_UNSUPPORTED; + } + if (Address > LShiftU64 (MaxCount - Count + 1, Width)) { + return EFI_UNSUPPORTED; + } + } + + // + // Check to see if Buffer is aligned + // + if (((UINTN)Buffer & ((MIN (sizeof (UINTN), mInStride[Width]) - 1))) != =3D 0) { + return EFI_UNSUPPORTED; + } + + return EFI_SUCCESS; +} + +/** + Reads memory-mapped registers. + + The I/O operations are carried out exactly as requested. The caller is r= esponsible + for satisfying any alignment and I/O width restrictions that a PI System= on a + platform might require. For example on some platforms, width requests of + EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, = will + be handled by the driver. + + If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32, + or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for + each of the Count operations that is performed. + + If Width is EfiCpuIoWidthFifoUint8, EfiCpuIoWidthFifoUint16, + EfiCpuIoWidthFifoUint32, or EfiCpuIoWidthFifoUint64, then only Buffer is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times on the same Address. + + If Width is EfiCpuIoWidthFillUint8, EfiCpuIoWidthFillUint16, + EfiCpuIoWidthFillUint32, or EfiCpuIoWidthFillUint64, then only Address is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times from the first element of Buffe= r. + + @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance. + @param[in] Width Signifies the width of the I/O or Memory operation. + @param[in] Address The base address of the I/O operation. + @param[in] Count The number of I/O operations to perform. The number= of + bytes moved is Width size * Count, starting at Addr= ess. + @param[out] Buffer For read operations, the destination buffer to stor= e the results. + For write operations, the source buffer from which = to write data. + + @retval EFI_SUCCESS The data was read from or written to the = PI system. + @retval EFI_INVALID_PARAMETER Width is invalid for this PI system. + @retval EFI_INVALID_PARAMETER Buffer is NULL. + @retval EFI_UNSUPPORTED The Buffer is not aligned for the given W= idth. + @retval EFI_UNSUPPORTED The address range specified by Address, W= idth, + and Count is not valid for this PI system. +**/ +EFI_STATUS +EFIAPI +CpuMemoryServiceRead ( + IN EFI_CPU_IO2_PROTOCOL *This, + IN EFI_CPU_IO_PROTOCOL_WIDTH Width, + IN UINT64 Address, + IN UINTN Count, + OUT VOID *Buffer + ) +{ + EFI_STATUS Status; + UINT8 InStride; + UINT8 OutStride; + EFI_CPU_IO_PROTOCOL_WIDTH OperationWidth; + UINT8 *Uint8Buffer; + Status =3D CpuIoCheckParameter (TRUE, Width, Address, Count, Buffer); + if (EFI_ERROR (Status)) { + return Status; + } + + // + // Select loop based on the width of the transfer + // + InStride =3D mInStride[Width]; + OutStride =3D mOutStride[Width]; + OperationWidth =3D (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03); + for (Uint8Buffer =3D Buffer; Count > 0; Address +=3D InStride, Uint8Buff= er +=3D OutStride, Count--) { + if (OperationWidth =3D=3D EfiCpuIoWidthUint8) { + *Uint8Buffer =3D MmioRead8 ((UINTN)Address); + } else if (OperationWidth =3D=3D EfiCpuIoWidthUint16) { + *((UINT16 *)Uint8Buffer) =3D MmioRead16 ((UINTN)Address); + } else if (OperationWidth =3D=3D EfiCpuIoWidthUint32) { + *((UINT32 *)Uint8Buffer) =3D MmioRead32 ((UINTN)Address); + } else if (OperationWidth =3D=3D EfiCpuIoWidthUint64) { + *((UINT64 *)Uint8Buffer) =3D MmioRead64 ((UINTN)Address); + } + } + return EFI_SUCCESS; +} + +/** + Writes memory-mapped registers. + + The I/O operations are carried out exactly as requested. The caller is r= esponsible + for satisfying any alignment and I/O width restrictions that a PI System= on a + platform might require. For example on some platforms, width requests of + EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, = will + be handled by the driver. + + If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32, + or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for + each of the Count operations that is performed. + + If Width is EfiCpuIoWidthFifoUint8, EfiCpuIoWidthFifoUint16, + EfiCpuIoWidthFifoUint32, or EfiCpuIoWidthFifoUint64, then only Buffer is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times on the same Address. + + If Width is EfiCpuIoWidthFillUint8, EfiCpuIoWidthFillUint16, + EfiCpuIoWidthFillUint32, or EfiCpuIoWidthFillUint64, then only Address is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times from the first element of Buffe= r. + + @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance. + @param[in] Width Signifies the width of the I/O or Memory operation. + @param[in] Address The base address of the I/O operation. + @param[in] Count The number of I/O operations to perform. The number= of + bytes moved is Width size * Count, starting at Addr= ess. + @param[in] Buffer For read operations, the destination buffer to stor= e the results. + For write operations, the source buffer from which = to write data. + + @retval EFI_SUCCESS The data was read from or written to the = PI system. + @retval EFI_INVALID_PARAMETER Width is invalid for this PI system. + @retval EFI_INVALID_PARAMETER Buffer is NULL. + @retval EFI_UNSUPPORTED The Buffer is not aligned for the given W= idth. + @retval EFI_UNSUPPORTED The address range specified by Address, W= idth, + and Count is not valid for this PI system. +**/ +EFI_STATUS +EFIAPI +CpuMemoryServiceWrite ( + IN EFI_CPU_IO2_PROTOCOL *This, + IN EFI_CPU_IO_PROTOCOL_WIDTH Width, + IN UINT64 Address, + IN UINTN Count, + IN VOID *Buffer + ) +{ + EFI_STATUS Status; + UINT8 InStride; + UINT8 OutStride; + EFI_CPU_IO_PROTOCOL_WIDTH OperationWidth; + UINT8 *Uint8Buffer; + + Status =3D CpuIoCheckParameter (TRUE, Width, Address, Count, Buffer); + if (EFI_ERROR (Status)) { + return Status; + } + + // + // Select loop based on the width of the transfer + // + InStride =3D mInStride[Width]; + OutStride =3D mOutStride[Width]; + OperationWidth =3D (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03); + for (Uint8Buffer =3D Buffer; Count > 0; Address +=3D InStride, Uint8Buff= er +=3D OutStride, Count--) { + if (OperationWidth =3D=3D EfiCpuIoWidthUint8) { + MmioWrite8 ((UINTN)Address, *Uint8Buffer); + } else if (OperationWidth =3D=3D EfiCpuIoWidthUint16) { + MmioWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer)); + } else if (OperationWidth =3D=3D EfiCpuIoWidthUint32) { + MmioWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer)); + } else if (OperationWidth =3D=3D EfiCpuIoWidthUint64) { + MmioWrite64 ((UINTN)Address, *((UINT64 *)Uint8Buffer)); + } + } + return EFI_SUCCESS; +} + +/** + Reads I/O registers. + + The I/O operations are carried out exactly as requested. The caller is r= esponsible + for satisfying any alignment and I/O width restrictions that a PI System= on a + platform might require. For example on some platforms, width requests of + EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, = will + be handled by the driver. + + If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32, + or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for + each of the Count operations that is performed. + + If Width is EfiCpuIoWidthFifoUint8, EfiCpuIoWidthFifoUint16, + EfiCpuIoWidthFifoUint32, or EfiCpuIoWidthFifoUint64, then only Buffer is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times on the same Address. + + If Width is EfiCpuIoWidthFillUint8, EfiCpuIoWidthFillUint16, + EfiCpuIoWidthFillUint32, or EfiCpuIoWidthFillUint64, then only Address is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times from the first element of Buffe= r. + + @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance. + @param[in] Width Signifies the width of the I/O or Memory operation. + @param[in] Address The base address of the I/O operation. + @param[in] Count The number of I/O operations to perform. The number= of + bytes moved is Width size * Count, starting at Addr= ess. + @param[out] Buffer For read operations, the destination buffer to stor= e the results. + For write operations, the source buffer from which = to write data. + + @retval EFI_SUCCESS The data was read from or written to the = PI system. + @retval EFI_INVALID_PARAMETER Width is invalid for this PI system. + @retval EFI_INVALID_PARAMETER Buffer is NULL. + @retval EFI_UNSUPPORTED The Buffer is not aligned for the given W= idth. + @retval EFI_UNSUPPORTED The address range specified by Address, W= idth, + and Count is not valid for this PI system. +**/ +EFI_STATUS +EFIAPI +CpuIoServiceRead ( + IN EFI_CPU_IO2_PROTOCOL *This, + IN EFI_CPU_IO_PROTOCOL_WIDTH Width, + IN UINT64 Address, + IN UINTN Count, + OUT VOID *Buffer + ) +{ + EFI_STATUS Status; + UINT8 InStride; + UINT8 OutStride; + EFI_CPU_IO_PROTOCOL_WIDTH OperationWidth; + UINT8 *Uint8Buffer; + + Status =3D CpuIoCheckParameter (FALSE, Width, Address, Count, Buffer); + if (EFI_ERROR (Status)) { + return Status; + } + Address +=3D PcdGet64 (PcdPciIoTranslation); + + // + // Select loop based on the width of the transfer + // + InStride =3D mInStride[Width]; + OutStride =3D mOutStride[Width]; + OperationWidth =3D (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03); + + for (Uint8Buffer =3D Buffer; Count > 0; Address +=3D InStride, Uint8Buff= er +=3D OutStride, Count--) { + if (OperationWidth =3D=3D EfiCpuIoWidthUint8) { + *Uint8Buffer =3D MmioRead8 ((UINTN)Address); + } else if (OperationWidth =3D=3D EfiCpuIoWidthUint16) { + *((UINT16 *)Uint8Buffer) =3D MmioRead16 ((UINTN)Address); + } else if (OperationWidth =3D=3D EfiCpuIoWidthUint32) { + *((UINT32 *)Uint8Buffer) =3D MmioRead32 ((UINTN)Address); + } + } + return EFI_SUCCESS; +} + +/** + Write I/O registers. + + The I/O operations are carried out exactly as requested. The caller is r= esponsible + for satisfying any alignment and I/O width restrictions that a PI System= on a + platform might require. For example on some platforms, width requests of + EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, = will + be handled by the driver. + + If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32, + or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for + each of the Count operations that is performed. + + If Width is EfiCpuIoWidthFifoUint8, EfiCpuIoWidthFifoUint16, + EfiCpuIoWidthFifoUint32, or EfiCpuIoWidthFifoUint64, then only Buffer is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times on the same Address. + + If Width is EfiCpuIoWidthFillUint8, EfiCpuIoWidthFillUint16, + EfiCpuIoWidthFillUint32, or EfiCpuIoWidthFillUint64, then only Address is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times from the first element of Buffe= r. + + @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance. + @param[in] Width Signifies the width of the I/O or Memory operation. + @param[in] Address The base address of the I/O operation. + @param[in] Count The number of I/O operations to perform. The number= of + bytes moved is Width size * Count, starting at Addr= ess. + @param[in] Buffer For read operations, the destination buffer to stor= e the results. + For write operations, the source buffer from which = to write data. + + @retval EFI_SUCCESS The data was read from or written to the = PI system. + @retval EFI_INVALID_PARAMETER Width is invalid for this PI system. + @retval EFI_INVALID_PARAMETER Buffer is NULL. + @retval EFI_UNSUPPORTED The Buffer is not aligned for the given W= idth. + @retval EFI_UNSUPPORTED The address range specified by Address, W= idth, + and Count is not valid for this PI system. +**/ +EFI_STATUS +EFIAPI +CpuIoServiceWrite ( + IN EFI_CPU_IO2_PROTOCOL *This, + IN EFI_CPU_IO_PROTOCOL_WIDTH Width, + IN UINT64 Address, + IN UINTN Count, + IN VOID *Buffer + ) +{ + EFI_STATUS Status; + UINT8 InStride; + UINT8 OutStride; + EFI_CPU_IO_PROTOCOL_WIDTH OperationWidth; + UINT8 *Uint8Buffer; + + // + // Make sure the parameters are valid + // + Status =3D CpuIoCheckParameter (FALSE, Width, Address, Count, Buffer); + if (EFI_ERROR (Status)) { + return Status; + } + + Address +=3D PcdGet64 (PcdPciIoTranslation); + + // + // Select loop based on the width of the transfer + // + InStride =3D mInStride[Width]; + OutStride =3D mOutStride[Width]; + OperationWidth =3D (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03); + + for (Uint8Buffer =3D (UINT8 *)Buffer; Count > 0; Address +=3D InStride, = Uint8Buffer +=3D OutStride, Count--) { + if (OperationWidth =3D=3D EfiCpuIoWidthUint8) { + MmioWrite8 ((UINTN)Address, *Uint8Buffer); + } else if (OperationWidth =3D=3D EfiCpuIoWidthUint16) { + MmioWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer)); + } else if (OperationWidth =3D=3D EfiCpuIoWidthUint32) { + MmioWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer)); + } + } + return EFI_SUCCESS; +} + +// +// CPU I/O 2 Protocol instance +// +STATIC EFI_CPU_IO2_PROTOCOL mCpuIo2 =3D { + { + CpuMemoryServiceRead, + CpuMemoryServiceWrite + }, + { + CpuIoServiceRead, + CpuIoServiceWrite + } +}; + +/** + The user Entry Point for module CpuIo2Dxe. The user code starts with thi= s function. + + @param[in] ImageHandle The firmware allocated handle for the EFI imag= e. + @param[in] SystemTable A pointer to the EFI System Table. + + @retval EFI_SUCCESS The entry point is executed successfully. + @retval other Some error occurs when executing this entry po= int. +**/ +EFI_STATUS +EFIAPI +PciCpuIo2Initialize ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_STATUS Status; + + ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiCpuIo2ProtocolGuid); + Status =3D gBS->InstallMultipleProtocolInterfaces ( + &mHandle, + &gEfiCpuIo2ProtocolGuid, &mCpuIo2, + NULL + ); + ASSERT_EFI_ERROR (Status); + return Status; +} diff --git a/Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe/PciCpu= Io2Dxe.h b/Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe/PciCpuIo= 2Dxe.h new file mode 100644 index 0000000000..2489429df7 --- /dev/null +++ b/Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe/PciCpuIo2Dxe.h @@ -0,0 +1,207 @@ +/** @file + Internal include file for the CPU I/O 2 Protocol. + + Copyright (c) 2022 Loongson Technology Corporation Limited. All rights r= eserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef PCI_CPU_IO2_DXE_H_ +#define PCI_CPU_IO2_DXE_H_ + +#define MAX_IO_PORT_ADDRESS 0xFFFF + +/** + Reads memory-mapped registers. + + The I/O operations are carried out exactly as requested. The caller is r= esponsible + for satisfying any alignment and I/O width restrictions that a PI System= on a + platform might require. For example on some platforms, width requests of + EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, = will + be handled by the driver. + + If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32, + or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for + each of the Count operations that is performed. + + If Width is EfiCpuIoWidthFifoUint8, EfiCpuIoWidthFifoUint16, + EfiCpuIoWidthFifoUint32, or EfiCpuIoWidthFifoUint64, then only Buffer is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times on the same Address. + + If Width is EfiCpuIoWidthFillUint8, EfiCpuIoWidthFillUint16, + EfiCpuIoWidthFillUint32, or EfiCpuIoWidthFillUint64, then only Address is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times from the first element of Buffe= r. + + @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance. + @param[in] Width Signifies the width of the I/O or Memory operation. + @param[in] Address The base address of the I/O operation. + @param[in] Count The number of I/O operations to perform. The number= of + bytes moved is Width size * Count, starting at Addr= ess. + @param[out] Buffer For read operations, the destination buffer to stor= e the results. + For write operations, the source buffer from which = to write data. + + @retval EFI_SUCCESS The data was read from or written to the = PI system. + @retval EFI_INVALID_PARAMETER Width is invalid for this PI system. + @retval EFI_INVALID_PARAMETER Buffer is NULL. + @retval EFI_UNSUPPORTED The Buffer is not aligned for the given W= idth. + @retval EFI_UNSUPPORTED The address range specified by Address, W= idth, + and Count is not valid for this PI system. +**/ +EFI_STATUS +EFIAPI +CpuMemoryServiceRead ( + IN EFI_CPU_IO2_PROTOCOL *This, + IN EFI_CPU_IO_PROTOCOL_WIDTH Width, + IN UINT64 Address, + IN UINTN Count, + OUT VOID *Buffer + ); + +/** + Writes memory-mapped registers. + + The I/O operations are carried out exactly as requested. The caller is r= esponsible + for satisfying any alignment and I/O width restrictions that a PI System= on a + platform might require. For example on some platforms, width requests of + EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, = will + be handled by the driver. + + If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32, + or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for + each of the Count operations that is performed. + + If Width is EfiCpuIoWidthFifoUint8, EfiCpuIoWidthFifoUint16, + EfiCpuIoWidthFifoUint32, or EfiCpuIoWidthFifoUint64, then only Buffer is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times on the same Address. + + If Width is EfiCpuIoWidthFillUint8, EfiCpuIoWidthFillUint16, + EfiCpuIoWidthFillUint32, or EfiCpuIoWidthFillUint64, then only Address is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times from the first element of Buffe= r. + + @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance. + @param[in] Width Signifies the width of the I/O or Memory operation. + @param[in] Address The base address of the I/O operation. + @param[in] Count The number of I/O operations to perform. The number= of + bytes moved is Width size * Count, starting at Addr= ess. + @param[in] Buffer For read operations, the destination buffer to stor= e the results. + For write operations, the source buffer from which = to write data. + + @retval EFI_SUCCESS The data was read from or written to the = PI system. + @retval EFI_INVALID_PARAMETER Width is invalid for this PI system. + @retval EFI_INVALID_PARAMETER Buffer is NULL. + @retval EFI_UNSUPPORTED The Buffer is not aligned for the given W= idth. + @retval EFI_UNSUPPORTED The address range specified by Address, W= idth, + and Count is not valid for this PI system. +**/ +EFI_STATUS +EFIAPI +CpuMemoryServiceWrite ( + IN EFI_CPU_IO2_PROTOCOL *This, + IN EFI_CPU_IO_PROTOCOL_WIDTH Width, + IN UINT64 Address, + IN UINTN Count, + IN VOID *Buffer + ); + +/** + Reads I/O registers. + + The I/O operations are carried out exactly as requested. The caller is r= esponsible + for satisfying any alignment and I/O width restrictions that a PI System= on a + platform might require. For example on some platforms, width requests of + EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, = will + be handled by the driver. + + If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32, + or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for + each of the Count operations that is performed. + + If Width is EfiCpuIoWidthFifoUint8, EfiCpuIoWidthFifoUint16, + EfiCpuIoWidthFifoUint32, or EfiCpuIoWidthFifoUint64, then only Buffer is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times on the same Address. + + If Width is EfiCpuIoWidthFillUint8, EfiCpuIoWidthFillUint16, + EfiCpuIoWidthFillUint32, or EfiCpuIoWidthFillUint64, then only Address is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times from the first element of Buffe= r. + + @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance. + @param[in] Width Signifies the width of the I/O or Memory operation. + @param[in] Address The base address of the I/O operation. + @param[in] Count The number of I/O operations to perform. The number= of + bytes moved is Width size * Count, starting at Addr= ess. + @param[out] Buffer For read operations, the destination buffer to stor= e the results. + For write operations, the source buffer from which = to write data. + + @retval EFI_SUCCESS The data was read from or written to the = PI system. + @retval EFI_INVALID_PARAMETER Width is invalid for this PI system. + @retval EFI_INVALID_PARAMETER Buffer is NULL. + @retval EFI_UNSUPPORTED The Buffer is not aligned for the given W= idth. + @retval EFI_UNSUPPORTED The address range specified by Address, W= idth, + and Count is not valid for this PI system. +**/ +EFI_STATUS +EFIAPI +CpuIoServiceRead ( + IN EFI_CPU_IO2_PROTOCOL *This, + IN EFI_CPU_IO_PROTOCOL_WIDTH Width, + IN UINT64 Address, + IN UINTN Count, + OUT VOID *Buffer + ); + +/** + Write I/O registers. + + The I/O operations are carried out exactly as requested. The caller is r= esponsible + for satisfying any alignment and I/O width restrictions that a PI System= on a + platform might require. For example on some platforms, width requests of + EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other hand, = will + be handled by the driver. + + If Width is EfiCpuIoWidthUint8, EfiCpuIoWidthUint16, EfiCpuIoWidthUint32, + or EfiCpuIoWidthUint64, then both Address and Buffer are incremented for + each of the Count operations that is performed. + + If Width is EfiCpuIoWidthFifoUint8, EfiCpuIoWidthFifoUint16, + EfiCpuIoWidthFifoUint32, or EfiCpuIoWidthFifoUint64, then only Buffer is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times on the same Address. + + If Width is EfiCpuIoWidthFillUint8, EfiCpuIoWidthFillUint16, + EfiCpuIoWidthFillUint32, or EfiCpuIoWidthFillUint64, then only Address is + incremented for each of the Count operations that is performed. The read= or + write operation is performed Count times from the first element of Buffe= r. + + @param[in] This A pointer to the EFI_CPU_IO2_PROTOCOL instance. + @param[in] Width Signifies the width of the I/O or Memory operation. + @param[in] Address The base address of the I/O operation. + @param[in] Count The number of I/O operations to perform. The number= of + bytes moved is Width size * Count, starting at Addr= ess. + @param[in] Buffer For read operations, the destination buffer to stor= e the results. + For write operations, the source buffer from which = to write data. + + @retval EFI_SUCCESS The data was read from or written to the = PI system. + @retval EFI_INVALID_PARAMETER Width is invalid for this PI system. + @retval EFI_INVALID_PARAMETER Buffer is NULL. + @retval EFI_UNSUPPORTED The Buffer is not aligned for the given W= idth. + @retval EFI_UNSUPPORTED The address range specified by Address, W= idth, + and Count is not valid for this PI system. +**/ +EFI_STATUS +EFIAPI +CpuIoServiceWrite ( + IN EFI_CPU_IO2_PROTOCOL *This, + IN EFI_CPU_IO_PROTOCOL_WIDTH Width, + IN UINT64 Address, + IN UINTN Count, + IN VOID *Buffer + ); + +#endif // PCI_CPU_IO2_DXE_H_ diff --git a/Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe/PciCpu= Io2Dxe.inf b/Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe/PciCpu= Io2Dxe.inf new file mode 100644 index 0000000000..a8a14cddd2 --- /dev/null +++ b/Platform/Loongson/LoongArchQemuPkg/Drivers/PciCpuIo2Dxe/PciCpuIo2Dxe.= inf @@ -0,0 +1,44 @@ +## @file +# Produces the CPU I/O 2 Protocol by using the services of the I/O Librar= y. +# +# Copyright (c) 2022 Loongson Technology Corporation Limited. All rights = reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION =3D 0x00010005 + BASE_NAME =3D PciCpuIo2Dxe + FILE_GUID =3D 168D1A6E-F4A5-448A-9E95-795661BB3067 + MODULE_TYPE =3D DXE_DRIVER + VERSION_STRING =3D 1.0 + ENTRY_POINT =3D PciCpuIo2Initialize + +# +# VALID_ARCHITECTURES =3D LOONGARCH64 +# + +[Sources] + PciCpuIo2Dxe.c + +[Packages] + Platform/Loongson/LoongArchQemuPkg/Loongson.dec + MdePkg/MdePkg.dec + +[LibraryClasses] + UefiDriverEntryPoint + BaseLib + DebugLib + IoLib + PcdLib + UefiBootServicesTableLib + +[Pcd] + gEfiMdePkgTokenSpaceGuid.PcdPciIoTranslation + +[Protocols] + gEfiCpuIo2ProtocolGuid ## PRODUCES + +[Depex] + TRUE --=20 2.31.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#96279): https://edk2.groups.io/g/devel/message/96279 Mute This Topic: https://groups.io/mt/94955176/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-