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Diffstat (limited to 'ReferenceCode/Chipset/SystemAgent/MemoryInit/Pei/MrcOemMmio.c')
| -rw-r--r-- | ReferenceCode/Chipset/SystemAgent/MemoryInit/Pei/MrcOemMmio.c | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/ReferenceCode/Chipset/SystemAgent/MemoryInit/Pei/MrcOemMmio.c b/ReferenceCode/Chipset/SystemAgent/MemoryInit/Pei/MrcOemMmio.c new file mode 100644 index 0000000..c2d80e6 --- /dev/null +++ b/ReferenceCode/Chipset/SystemAgent/MemoryInit/Pei/MrcOemMmio.c @@ -0,0 +1,302 @@ +/** @file + This file contains the memory mapped I/O manipulation functions. + +@copyright + Copyright (c) 1999 - 2012 Intel Corporation. All rights reserved. + This software and associated documentation (if any) is furnished + under a license and may only be used or copied in accordance + with the terms of the license. Except as permitted by such + license, no part of this software or documentation may be + reproduced, stored in a retrieval system, or transmitted in any + form or by any means without the express written consent of + Intel Corporation. + + This file contains an 'Intel Peripheral Driver' and uniquely + identified as "Intel Reference Module" and is + licensed for Intel CPUs and chipsets under the terms of your + license agreement with Intel or your vendor. This file may + be modified by the user, subject to additional terms of the + license agreement. +**/ + +#include "MrcTypes.h" +#include "MrcOemMmio.h" + +/** +@brief + Read 64 bits from the Memory Mapped I/O space. + + @param[in] Offset - Offset from the specified base address. + @param[out] Value - Where to store the read value. + @param[in] BaseAddress - MMIO space base address. + + @retval Nothing. +**/ +void +MrcOemMmioRead64 ( + IN U32 Offset, + OUT U64 *Value, + IN U32 BaseAddress + ) +{ + U64 MmxSave; + U64 *MmioOffset; + + MmioOffset = (U64 *) (Offset + BaseAddress); + +#if defined __GNUC__ // GCC compiler + __asm__ __volatile__ ( + "\n\t movq %%mm0, %0" + "\n\t movq %2, %%mm0" + "\n\t movq %%mm0, %1" + "\n\t movq %3, %%mm0" + "\n\t emms" + : "=m" (MmxSave), + "=m" (Value[0]) + : "m" (MmioOffset[0]), + "m" (MmxSave) + ); +#else // MSFT compiler + ASM { + + ; Save mm0 + movq MmxSave, mm0 + + mov edi, MmioOffset + + movq mm0, QWORD PTR DS:[edi] + + mov edi, Value + movq QWORD PTR DS:[edi], mm0 + + ; Restore mm0 + movq mm0, MmxSave + emms ; Exit mmx Instruction + } +#endif + + MmioReadCount (); + return; +} + +/** +@brief + Read 32 bits from the Memory Mapped I/O space. + + @param[in] Offset - Offset from the specified base address. + @param[out] Value - Where to store the read value. + @param[in] BaseAddress - MMIO space base address. + + @retval Nothing. +**/ +void +MrcOemMmioRead ( + IN U32 Offset, + OUT U32 *Value, + IN U32 BaseAddress + ) +{ + *Value = (*((volatile U32 *) (Offset + BaseAddress))); + MmioReadCount (); + return; +} + +/** +@brief + Read 16 bits from the Memory Mapped I/O space. + + @param[in] Offset - Offset from the specified base address. + @param[out] Value - Where to store the read value. + @param[in] BaseAddress - MMIO space base address. + + @retval Nothing. +**/ +void +MrcOemMmioRead16 ( + IN U32 Offset, + OUT U16 *Value, + IN U32 BaseAddress + ) +{ + *Value = (*((volatile U16 *) (Offset + BaseAddress))); + MmioReadCount (); + return; +} + +/** +@brief + Read 8 bits from the Memory Mapped I/O space. + + @param[in] Offset - Offset from the specified base address. + @param[out] Value - Where to store the read value. + @param[in] BaseAddress - MMIO space base address. + + @retval Nothing. +**/ +void +MrcOemMmioRead8 ( + IN U32 Offset, + OUT U8 *Value, + IN U32 BaseAddress + ) +{ + *Value = (*((volatile U8 *) (Offset + BaseAddress))); + MmioReadCount (); + return; +} + +/** +@brief + Write 64 bits to the Memory Mapped I/O space. + + @param[in] Offset - Offset from the specified base address. + @param[in] Value - The value to write. + @param[in] BaseAddress - MMIO space base address. + + @retval Nothing. +**/ +void +MrcOemMmioWrite64 ( + IN U32 Offset, + IN U64 Value, + IN U32 BaseAddress + ) +{ + U64 MmxSave; + U64 *MmioOffset; + + MmioOffset = (U64 *) (Offset + BaseAddress); + +#if defined __GNUC__ // GCC compiler + __asm__ __volatile__ ( + "\n\t movq %%mm0, %0" + "\n\t movq %2, %%mm0" + "\n\t movq %%mm0, %1" + "\n\t movq %3, %%mm0" + "\n\t emms" + : "=m" (MmxSave) + : "m" (MmioOffset[0]), + "m" (Value), + "m" (MmxSave) + ); +#else //MSFT compiler + ASM { + + ; Save mm0 + movq MmxSave, mm0 + + mov edi, MmioOffset + movq mm0, Value + + movq QWORD PTR DS:[edi], mm0 + + ; Restore mm0 + movq mm0, MmxSave + emms ; Exit mmx Instruction + + } +#endif + + MmioWriteCount (); + return; +} + +/** +@brief + Write 32 bits to the Memory Mapped I/O space. + + @param[in] Offset - Offset from the specified base address. + @param[in] Value - The value to write. + @param[in] BaseAddress - MMIO space base address. + + @retval Nothing. +**/ +void +MrcOemMmioWrite ( + IN U32 Offset, + IN U32 Value, + IN U32 BaseAddress + ) +{ + (*((volatile U32 *) (Offset + BaseAddress))) = Value; + MmioWriteCount (); + return; +} + +/** +@brief + Write 16 bits to the Memory Mapped I/O space. + + @param[in] Offset - Offset from the specified base address. + @param[in] Value - The value to write. + @param[in] BaseAddress - MMIO space base address. + + @retval Nothing. +**/ +void +MrcOemMmioWrite16 ( + IN U32 Offset, + IN U16 Value, + IN U32 BaseAddress + ) +{ + (*((volatile U16 *) (Offset + BaseAddress))) = Value; + MmioWriteCount (); + return; +} + +/** +@brief + Write 8 bits to the Memory Mapped I/O space. + + @param[in] Offset - Offset from the specified base address. + @param[in] Value - The value to write. + @param[in] BaseAddress - MMIO space base address. + + @retval Nothing. +**/ +void +MrcOemMmioWrite8 ( + IN U32 Offset, + IN U8 Value, + IN U32 BaseAddress + ) +{ + (*((volatile U8 *) (Offset + BaseAddress))) = Value; + MmioWriteCount (); + return; +} +#ifndef MRC_MINIBIOS_BUILD +/*++ + +@brief + This function count the number of access to writes MMIO registers. + + @param[in] Nothing. + + @retval Nothing. +**/ +void +MmioWriteCount ( + void + ) +{ + return; +} + +/** +@brief + This function count the number of access to reads MMIO registers. + + @param[in] Nothing. + + @retval Nothing. +**/ +void +MmioReadCount ( + void + ) +{ + return; +} +#endif // MRC_MINIBIOS_BUILD |