diff options
| author | Chao Li <lichao@loongson.cn> | 2024-04-30 15:48:02 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-04-30 11:10:10 +0000 |
| commit | 5e31c5666d95de55b9a910944c83ecddb19334ab (patch) | |
| tree | d1a7bd72a5039672a5b60d96612a3f4cd62010d7 /OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibMmioInternal.h | |
| parent | e942b85a213fe75114289418d7b6061731ccafd3 (diff) | |
| download | edk2-5e31c5666d95de55b9a910944c83ecddb19334ab.tar.gz edk2-5e31c5666d95de55b9a910944c83ecddb19334ab.tar.bz2 edk2-5e31c5666d95de55b9a910944c83ecddb19334ab.zip | |
OvmfPkg: Separate QemuFwCfgLibMmio.c into two files
Separate QemuFwCfgLibMmio.c into two files named QemuFwCfgLibMmio.c and
QemuFwCfgLibMmioDxe.c, added a new header named
QemuFwCfgLibMmioInternal.h for MMIO version.
Some DXE stage variables became non-static in this patch, they will be
restored to static in the next patch.
Build-tested only (with "ArmVirtQemu.dsc and RiscVVirtQemu.dsc").
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4755
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Cc: Andrei Warkentin <andrei.warkentin@intel.com>
Signed-off-by: Chao Li <lichao@loongson.cn>
Diffstat (limited to 'OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibMmioInternal.h')
| -rw-r--r-- | OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibMmioInternal.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibMmioInternal.h b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibMmioInternal.h new file mode 100644 index 0000000000..8c63cf12ef --- /dev/null +++ b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibMmioInternal.h @@ -0,0 +1,173 @@ +/** @file
+ Internal interfaces specific to the QemuFwCfgLibMmio instances in OvmfPkg.
+
+ Copyright (C) 2016, Red Hat, Inc.
+ Copyright (C) 2017, Advanced Micro Devices. All rights reserved
+ Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef QEMU_FW_CFG_LIB_MMIO_INTERNAL_H_
+#define QEMU_FW_CFG_LIB_MMIO_INTERNAL_H_
+
+extern UINTN mFwCfgSelectorAddress;
+extern UINTN mFwCfgDataAddress;
+extern UINTN mFwCfgDmaAddress;
+
+/**
+ Reads firmware configuration bytes into a buffer
+
+ @param[in] Size Size in bytes to read
+ @param[in] Buffer Buffer to store data into (OPTIONAL if Size is 0)
+
+**/
+typedef
+VOID(EFIAPI READ_BYTES_FUNCTION)(
+ IN UINTN Size,
+ IN VOID *Buffer OPTIONAL
+ );
+
+/**
+ Writes bytes from a buffer to firmware configuration
+
+ @param[in] Size Size in bytes to write
+ @param[in] Buffer Buffer to transfer data from (OPTIONAL if Size is 0)
+
+**/
+typedef
+VOID(EFIAPI WRITE_BYTES_FUNCTION)(
+ IN UINTN Size,
+ IN VOID *Buffer OPTIONAL
+ );
+
+/**
+ Skips bytes in firmware configuration
+
+ @param[in] Size Size in bytes to skip
+
+**/
+typedef
+VOID(EFIAPI SKIP_BYTES_FUNCTION)(
+ IN UINTN Size
+ );
+
+/**
+ Reads firmware configuration bytes into a buffer
+
+ @param[in] Size Size in bytes to read
+ @param[in] Buffer Buffer to store data into (OPTIONAL if Size is 0)
+
+**/
+extern
+VOID (EFIAPI *InternalQemuFwCfgReadBytes)(
+ IN UINTN Size,
+ IN VOID *Buffer OPTIONAL
+ );
+
+/**
+ Writes bytes from a buffer to firmware configuration
+
+ @param[in] Size Size in bytes to write
+ @param[in] Buffer Buffer to transfer data from (OPTIONAL if Size is 0)
+
+**/
+extern
+VOID (EFIAPI *InternalQemuFwCfgWriteBytes)(
+ IN UINTN Size,
+ IN VOID *Buffer OPTIONAL
+ );
+
+/**
+ Skips bytes in firmware configuration
+
+ @param[in] Size Size in bytes to skip
+
+**/
+extern
+VOID (EFIAPI *InternalQemuFwCfgSkipBytes)(
+ IN UINTN Size
+ );
+
+/**
+ Slow READ_BYTES_FUNCTION.
+**/
+VOID
+EFIAPI
+MmioReadBytes (
+ IN UINTN Size,
+ IN VOID *Buffer OPTIONAL
+ );
+
+/**
+ Slow WRITE_BYTES_FUNCTION.
+**/
+VOID
+EFIAPI
+MmioWriteBytes (
+ IN UINTN Size,
+ IN VOID *Buffer OPTIONAL
+ );
+
+/**
+ Slow SKIP_BYTES_FUNCTION.
+**/
+VOID
+EFIAPI
+MmioSkipBytes (
+ IN UINTN Size
+ );
+
+/**
+ Fast READ_BYTES_FUNCTION.
+**/
+VOID
+EFIAPI
+DmaReadBytes (
+ IN UINTN Size,
+ IN VOID *Buffer OPTIONAL
+ );
+
+/**
+ Fast WRITE_BYTES_FUNCTION.
+**/
+VOID
+EFIAPI
+DmaWriteBytes (
+ IN UINTN Size,
+ IN VOID *Buffer OPTIONAL
+ );
+
+/**
+ Fast SKIP_BYTES_FUNCTION.
+**/
+VOID
+EFIAPI
+DmaSkipBytes (
+ IN UINTN Size
+ );
+
+/**
+ Transfer an array of bytes, or skip a number of bytes, using the DMA
+ interface.
+
+ @param[in] Size Size in bytes to transfer or skip.
+
+ @param[in,out] Buffer Buffer to read data into or write data from. Ignored,
+ and may be NULL, if Size is zero, or Control is
+ FW_CFG_DMA_CTL_SKIP.
+
+ @param[in] Control One of the following:
+ FW_CFG_DMA_CTL_WRITE - write to fw_cfg from Buffer.
+ FW_CFG_DMA_CTL_READ - read from fw_cfg into Buffer.
+ FW_CFG_DMA_CTL_SKIP - skip bytes in fw_cfg.
+**/
+VOID
+DmaTransferBytes (
+ IN UINTN Size,
+ IN OUT VOID *Buffer OPTIONAL,
+ IN UINT32 Control
+ );
+
+#endif
|