85ad9a6e0a
Update the EmmcBlockIoPei driver to consume IOMMU_PPI to allocate DMA buffer. If no IOMMU_PPI exists, this driver still calls PEI service to allocate DMA buffer, with assumption that DRAM==DMA. This is a compatible change. Cc: Jiewen Yao <jiewen.yao@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/** @file
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Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions
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of the BSD License which accompanies this distribution. The
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full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _EMMC_PEIM_MEM_H_
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#define _EMMC_PEIM_MEM_H_
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#define EMMC_PEIM_MEM_BIT(a) ((UINTN)(1 << (a)))
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#define EMMC_PEIM_MEM_BIT_IS_SET(Data, Bit) \
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((BOOLEAN)(((Data) & EMMC_PEIM_MEM_BIT(Bit)) == EMMC_PEIM_MEM_BIT(Bit)))
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typedef struct _EMMC_PEIM_MEM_BLOCK EMMC_PEIM_MEM_BLOCK;
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struct _EMMC_PEIM_MEM_BLOCK {
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UINT8 *Bits; // Bit array to record which unit is allocated
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UINTN BitsLen;
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UINT8 *Buf;
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UINT8 *BufHost;
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UINTN BufLen; // Memory size in bytes
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VOID *Mapping;
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EMMC_PEIM_MEM_BLOCK *Next;
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};
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typedef struct _EMMC_PEIM_MEM_POOL {
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EMMC_PEIM_MEM_BLOCK *Head;
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} EMMC_PEIM_MEM_POOL;
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//
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// Memory allocation unit, note that the value must meet EMMC spec alignment requirement.
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//
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#define EMMC_PEIM_MEM_UNIT 128
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#define EMMC_PEIM_MEM_UNIT_MASK (EMMC_PEIM_MEM_UNIT - 1)
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#define EMMC_PEIM_MEM_DEFAULT_PAGES 16
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#define EMMC_PEIM_MEM_ROUND(Len) (((Len) + EMMC_PEIM_MEM_UNIT_MASK) & (~EMMC_PEIM_MEM_UNIT_MASK))
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//
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// Advance the byte and bit to the next bit, adjust byte accordingly.
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//
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#define EMMC_PEIM_NEXT_BIT(Byte, Bit) \
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do { \
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(Bit)++; \
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if ((Bit) > 7) { \
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(Byte)++; \
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(Bit) = 0; \
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} \
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} while (0)
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#endif
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