MdeModulePkg/SdMmc: Add EDKII SD/MMC stack
This stack includes: 1. Dxe phase support by: 1) SdMmcPciHcDxe driver to consume PciIo and produce SdMmcPassThru. 2) SdDxe driver to consume SdMmcPassThru to produce BlkIo1/BlkIo2. 3) EmmcDxe driver to consume SdMmcPassThru to produce BlkIo1/BlkIo2/SSP. 2. Pei phase support 1) SdBlockIoPei driver to consume SdMmcHostController Ppi and produce VirutalBlkIo1&2. 2) EmmcBlockIoPei driver to consume SdMmcHostController Ppi and produce VirutalBlkIo1&2. 3) SdMmcPciHcPei driver to produce SdMmcHostController Ppi. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Feng Tian <feng.tian@intel.com> Reviewed-by: Hao Wu <hao.a.wu@intel.com>
This commit is contained in:
455
MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHcMem.c
Normal file
455
MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHcMem.c
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/** @file
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Copyright (c) 2015, 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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#include "SdBlockIoPei.h"
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/**
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Allocate a block of memory to be used by the buffer pool.
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@param Pages How many pages to allocate.
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@return The allocated memory block or NULL if failed.
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**/
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SD_PEIM_MEM_BLOCK *
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SdPeimAllocMemBlock (
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IN UINTN Pages
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)
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{
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SD_PEIM_MEM_BLOCK *Block;
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EFI_STATUS Status;
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VOID *TempPtr;
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EFI_PHYSICAL_ADDRESS Address;
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TempPtr = NULL;
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Block = NULL;
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Status = PeiServicesAllocatePool (sizeof(SD_PEIM_MEM_BLOCK), &TempPtr);
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if (EFI_ERROR (Status)) {
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return NULL;
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}
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ZeroMem ((VOID*)(UINTN)TempPtr, sizeof(SD_PEIM_MEM_BLOCK));
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//
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// each bit in the bit array represents SD_PEIM_MEM_UNIT
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// bytes of memory in the memory block.
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//
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ASSERT (SD_PEIM_MEM_UNIT * 8 <= EFI_PAGE_SIZE);
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Block = (SD_PEIM_MEM_BLOCK*)(UINTN)TempPtr;
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Block->BufLen = EFI_PAGES_TO_SIZE (Pages);
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Block->BitsLen = Block->BufLen / (SD_PEIM_MEM_UNIT * 8);
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Status = PeiServicesAllocatePool (Block->BitsLen, &TempPtr);
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if (EFI_ERROR (Status)) {
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return NULL;
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}
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ZeroMem ((VOID*)(UINTN)TempPtr, Block->BitsLen);
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Block->Bits = (UINT8*)(UINTN)TempPtr;
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Status = PeiServicesAllocatePages (
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EfiBootServicesCode,
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Pages,
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&Address
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);
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if (EFI_ERROR (Status)) {
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return NULL;
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}
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ZeroMem ((VOID*)(UINTN)Address, EFI_PAGES_TO_SIZE (Pages));
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Block->Buf = (UINT8*)((UINTN)Address);
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Block->Next = NULL;
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return Block;
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}
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/**
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Free the memory block from the memory pool.
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@param Pool The memory pool to free the block from.
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@param Block The memory block to free.
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**/
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VOID
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SdPeimFreeMemBlock (
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IN SD_PEIM_MEM_POOL *Pool,
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IN SD_PEIM_MEM_BLOCK *Block
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)
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{
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ASSERT ((Pool != NULL) && (Block != NULL));
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}
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/**
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Alloc some memory from the block.
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@param Block The memory block to allocate memory from.
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@param Units Number of memory units to allocate.
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@return The pointer to the allocated memory. If couldn't allocate the needed memory,
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the return value is NULL.
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**/
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VOID *
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SdPeimAllocMemFromBlock (
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IN SD_PEIM_MEM_BLOCK *Block,
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IN UINTN Units
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)
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{
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UINTN Byte;
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UINT8 Bit;
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UINTN StartByte;
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UINT8 StartBit;
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UINTN Available;
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UINTN Count;
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ASSERT ((Block != 0) && (Units != 0));
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StartByte = 0;
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StartBit = 0;
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Available = 0;
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for (Byte = 0, Bit = 0; Byte < Block->BitsLen;) {
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//
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// If current bit is zero, the corresponding memory unit is
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// available, otherwise we need to restart our searching.
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// Available counts the consective number of zero bit.
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//
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if (!SD_PEIM_MEM_BIT_IS_SET (Block->Bits[Byte], Bit)) {
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Available++;
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if (Available >= Units) {
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break;
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}
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SD_PEIM_NEXT_BIT (Byte, Bit);
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} else {
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SD_PEIM_NEXT_BIT (Byte, Bit);
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Available = 0;
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StartByte = Byte;
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StartBit = Bit;
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}
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}
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if (Available < Units) {
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return NULL;
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}
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//
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// Mark the memory as allocated
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//
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Byte = StartByte;
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Bit = StartBit;
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for (Count = 0; Count < Units; Count++) {
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ASSERT (!SD_PEIM_MEM_BIT_IS_SET (Block->Bits[Byte], Bit));
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Block->Bits[Byte] = (UINT8) (Block->Bits[Byte] | (UINT8) SD_PEIM_MEM_BIT (Bit));
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SD_PEIM_NEXT_BIT (Byte, Bit);
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}
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return Block->Buf + (StartByte * 8 + StartBit) * SD_PEIM_MEM_UNIT;
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}
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/**
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Insert the memory block to the pool's list of the blocks.
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@param Head The head of the memory pool's block list.
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@param Block The memory block to insert.
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**/
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VOID
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SdPeimInsertMemBlockToPool (
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IN SD_PEIM_MEM_BLOCK *Head,
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IN SD_PEIM_MEM_BLOCK *Block
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)
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{
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ASSERT ((Head != NULL) && (Block != NULL));
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Block->Next = Head->Next;
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Head->Next = Block;
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}
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/**
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Is the memory block empty?
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@param Block The memory block to check.
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@retval TRUE The memory block is empty.
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@retval FALSE The memory block isn't empty.
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**/
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BOOLEAN
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SdPeimIsMemBlockEmpty (
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IN SD_PEIM_MEM_BLOCK *Block
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)
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{
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UINTN Index;
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for (Index = 0; Index < Block->BitsLen; Index++) {
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if (Block->Bits[Index] != 0) {
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return FALSE;
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}
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}
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return TRUE;
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}
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/**
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Unlink the memory block from the pool's list.
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@param Head The block list head of the memory's pool.
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@param BlockToUnlink The memory block to unlink.
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**/
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VOID
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SdPeimUnlinkMemBlock (
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IN SD_PEIM_MEM_BLOCK *Head,
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IN SD_PEIM_MEM_BLOCK *BlockToUnlink
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)
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{
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SD_PEIM_MEM_BLOCK *Block;
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ASSERT ((Head != NULL) && (BlockToUnlink != NULL));
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for (Block = Head; Block != NULL; Block = Block->Next) {
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if (Block->Next == BlockToUnlink) {
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Block->Next = BlockToUnlink->Next;
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BlockToUnlink->Next = NULL;
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break;
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}
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}
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}
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/**
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Initialize the memory management pool for the host controller.
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@param Private The Sd Peim driver private data.
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@retval EFI_SUCCESS The memory pool is initialized.
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@retval Others Fail to init the memory pool.
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**/
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EFI_STATUS
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SdPeimInitMemPool (
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IN SD_PEIM_HC_PRIVATE_DATA *Private
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)
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{
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SD_PEIM_MEM_POOL *Pool;
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EFI_STATUS Status;
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VOID *TempPtr;
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TempPtr = NULL;
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Pool = NULL;
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Status = PeiServicesAllocatePool (sizeof (SD_PEIM_MEM_POOL), &TempPtr);
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if (EFI_ERROR (Status)) {
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return EFI_OUT_OF_RESOURCES;
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}
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ZeroMem ((VOID*)(UINTN)TempPtr, sizeof (SD_PEIM_MEM_POOL));
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Pool = (SD_PEIM_MEM_POOL *)((UINTN)TempPtr);
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Pool->Head = SdPeimAllocMemBlock (SD_PEIM_MEM_DEFAULT_PAGES);
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if (Pool->Head == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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Private->Pool = Pool;
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return EFI_SUCCESS;
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}
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/**
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Release the memory management pool.
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@param Pool The memory pool to free.
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@retval EFI_DEVICE_ERROR Fail to free the memory pool.
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@retval EFI_SUCCESS The memory pool is freed.
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**/
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EFI_STATUS
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SdPeimFreeMemPool (
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IN SD_PEIM_MEM_POOL *Pool
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)
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{
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SD_PEIM_MEM_BLOCK *Block;
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ASSERT (Pool->Head != NULL);
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//
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// Unlink all the memory blocks from the pool, then free them.
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// SdPeimUnlinkMemBlock can't be used to unlink and free the
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// first block.
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//
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for (Block = Pool->Head->Next; Block != NULL; Block = Pool->Head->Next) {
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SdPeimFreeMemBlock (Pool, Block);
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}
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SdPeimFreeMemBlock (Pool, Pool->Head);
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return EFI_SUCCESS;
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}
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/**
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Allocate some memory from the host controller's memory pool
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which can be used to communicate with host controller.
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@param Pool The host controller's memory pool.
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@param Size Size of the memory to allocate.
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@return The allocated memory or NULL.
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**/
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VOID *
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SdPeimAllocateMem (
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IN SD_PEIM_MEM_POOL *Pool,
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IN UINTN Size
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)
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{
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SD_PEIM_MEM_BLOCK *Head;
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SD_PEIM_MEM_BLOCK *Block;
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SD_PEIM_MEM_BLOCK *NewBlock;
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VOID *Mem;
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UINTN AllocSize;
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UINTN Pages;
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Mem = NULL;
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AllocSize = SD_PEIM_MEM_ROUND (Size);
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Head = Pool->Head;
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ASSERT (Head != NULL);
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//
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// First check whether current memory blocks can satisfy the allocation.
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//
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for (Block = Head; Block != NULL; Block = Block->Next) {
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Mem = SdPeimAllocMemFromBlock (Block, AllocSize / SD_PEIM_MEM_UNIT);
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if (Mem != NULL) {
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ZeroMem (Mem, Size);
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break;
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}
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}
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if (Mem != NULL) {
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return Mem;
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}
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//
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// Create a new memory block if there is not enough memory
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// in the pool. If the allocation size is larger than the
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// default page number, just allocate a large enough memory
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// block. Otherwise allocate default pages.
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//
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if (AllocSize > EFI_PAGES_TO_SIZE (SD_PEIM_MEM_DEFAULT_PAGES)) {
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Pages = EFI_SIZE_TO_PAGES (AllocSize) + 1;
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} else {
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Pages = SD_PEIM_MEM_DEFAULT_PAGES;
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}
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NewBlock = SdPeimAllocMemBlock (Pages);
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if (NewBlock == NULL) {
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return NULL;
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}
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//
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// Add the new memory block to the pool, then allocate memory from it
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//
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SdPeimInsertMemBlockToPool (Head, NewBlock);
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Mem = SdPeimAllocMemFromBlock (NewBlock, AllocSize / SD_PEIM_MEM_UNIT);
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if (Mem != NULL) {
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ZeroMem (Mem, Size);
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}
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return Mem;
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}
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/**
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Free the allocated memory back to the memory pool.
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@param Pool The memory pool of the host controller.
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@param Mem The memory to free.
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@param Size The size of the memory to free.
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**/
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VOID
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SdPeimFreeMem (
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IN SD_PEIM_MEM_POOL *Pool,
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IN VOID *Mem,
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IN UINTN Size
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)
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{
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SD_PEIM_MEM_BLOCK *Head;
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SD_PEIM_MEM_BLOCK *Block;
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UINT8 *ToFree;
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UINTN AllocSize;
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UINTN Byte;
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UINTN Bit;
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UINTN Count;
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Head = Pool->Head;
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AllocSize = SD_PEIM_MEM_ROUND (Size);
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ToFree = (UINT8 *) Mem;
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for (Block = Head; Block != NULL; Block = Block->Next) {
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//
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// scan the memory block list for the memory block that
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// completely contains the memory to free.
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//
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if ((Block->Buf <= ToFree) && ((ToFree + AllocSize) <= (Block->Buf + Block->BufLen))) {
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//
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// compute the start byte and bit in the bit array
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//
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Byte = ((ToFree - Block->Buf) / SD_PEIM_MEM_UNIT) / 8;
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Bit = ((ToFree - Block->Buf) / SD_PEIM_MEM_UNIT) % 8;
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//
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// reset associated bits in bit arry
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//
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for (Count = 0; Count < (AllocSize / SD_PEIM_MEM_UNIT); Count++) {
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ASSERT (SD_PEIM_MEM_BIT_IS_SET (Block->Bits[Byte], Bit));
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Block->Bits[Byte] = (UINT8) (Block->Bits[Byte] ^ SD_PEIM_MEM_BIT (Bit));
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SD_PEIM_NEXT_BIT (Byte, Bit);
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}
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break;
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}
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}
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//
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// If Block == NULL, it means that the current memory isn't
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// in the host controller's pool. This is critical because
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// the caller has passed in a wrong memory point
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//
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ASSERT (Block != NULL);
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//
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// Release the current memory block if it is empty and not the head
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//
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if ((Block != Head) && SdPeimIsMemBlockEmpty (Block)) {
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SdPeimFreeMemBlock (Pool, Block);
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}
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return ;
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}
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Reference in New Issue
Block a user