MdeModulePkg/EmmcBlockIoPei: Support IoMmu
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>
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@@ -1,6 +1,6 @@
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/** @file
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Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
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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 of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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@@ -136,6 +136,11 @@ EMMC_PEIM_HC_PRIVATE_DATA gEmmcHcPrivateTemplate = {
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&gEfiPeiVirtualBlockIo2PpiGuid,
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NULL
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},
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{ // EndOfPeiNotifyList
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(EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEfiEndOfPeiSignalPpiGuid,
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EmmcBlockIoPeimEndOfPei
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},
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{ // Slot
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{
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0,
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@@ -618,6 +623,36 @@ EmmcBlockIoPeimReadBlocks2 (
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return Status;
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}
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/**
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One notified function to cleanup the allocated DMA buffers at the end of PEI.
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@param[in] PeiServices Pointer to PEI Services Table.
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@param[in] NotifyDescriptor Pointer to the descriptor for the Notification
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event that caused this function to execute.
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@param[in] Ppi Pointer to the PPI data associated with this function.
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@retval EFI_SUCCESS The function completes successfully
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**/
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EFI_STATUS
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EFIAPI
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EmmcBlockIoPeimEndOfPei (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
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IN VOID *Ppi
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)
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{
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EMMC_PEIM_HC_PRIVATE_DATA *Private;
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Private = GET_EMMC_PEIM_HC_PRIVATE_DATA_FROM_THIS_NOTIFY (NotifyDescriptor);
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if ((Private->Pool != NULL) && (Private->Pool->Head != NULL)) {
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EmmcPeimFreeMemPool (Private->Pool);
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}
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return EFI_SUCCESS;
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}
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/**
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The user code starts with this function.
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@@ -672,6 +707,8 @@ InitializeEmmcBlockIoPeim (
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return EFI_DEVICE_ERROR;
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}
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IoMmuInit ();
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Controller = 0;
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MmioBase = NULL;
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while (TRUE) {
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@@ -800,6 +837,11 @@ InitializeEmmcBlockIoPeim (
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if (!EFI_ERROR (Status)) {
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PeiServicesInstallPpi (&Private->BlkIoPpiList);
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PeiServicesNotifyPpi (&Private->EndOfPeiNotifyList);
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} else {
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if (Private->Pool->Head != NULL) {
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EmmcPeimFreeMemPool (Private->Pool);
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}
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}
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}
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