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- /** @file
- @copyright
- Copyright 1999 - 2021 Intel Corporation. <BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include <Guid/SocketPciResourceData.h>
- #include <Guid/SocketIioVariable.h>
- #include <Protocol/IioUds.h>
- #include "PciHostBridge.h"
- #include "PciRootBridge.h"
- #include "PciRebalance.h"
- extern EFI_IIO_UDS_PROTOCOL *mIioUds;
- /**
- Adjust resource assignments among sockets to fit the low
- MMIO resources (32-bit addresses) from the PCI(e) devices in the system
- @param[in,out] SocketResources - CPU_RESOURCE structure pointer that stores all resources need per socket
- @param[in] ResourceType - Type of resource that requires alignment
- @param[in] ValidSockets - Number of Valid Sockets, need it to calculate how resources need to be splitted
- @retval EFI_SUCCESS - Succeed.
- @retval EFI_OUT_OF_RESOURCES - Not enough resources to be adjusted within the socket.
- */
- EFI_STATUS
- AdjustSocketMmioL (
- IN OUT CPU_RESOURCE *SocketResources,
- IN UINT8 ResourceType,
- IN UINT8 ValidSockets
- )
- {
- CONST UINT8 LastSocket = ValidSockets - 1;
- UINT8 Socket;
- UINT8 Stack;
- UINT8 LastStack;
- UINT64 Take;
- UINT32 UboxMmioSize;
- UINT64 ResourceSize;
- UINT64 TotalResourceSize;
- UINT32 TempMmioBase;
- UINT32 TempMmioLimit;
- Take = 0;
- UboxMmioSize = mIioUds->IioUdsPtr->PlatformData.UboxMmioSize;
- //
- // Get first and last MMIOL address
- //
- TempMmioBase = mIioUds->IioUdsPtr->PlatformData.PlatGlobalMmio32Base;
- TempMmioLimit = mIioUds->IioUdsPtr->PlatformData.PlatGlobalMmio32Limit;
- //
- // Find all the extra space left
- //
- for (Socket = 0; Socket < ValidSockets; Socket++) {
- if ((SocketResources[Socket].MmiolResourceNeeds == 0) && (SocketResources[Socket].MmiolResourcesLeft != 0)) {
- Take += SocketResources[Socket].MmiolResourcesLeft + 1;
- SocketResources[Socket].MmiolResourcesLeft = 0;
- }
- }
- //
- // Give space to sockets that needs more space favoring first come first served
- //
- for (Socket = 0; Socket < ValidSockets; Socket++) {
- if ((SocketResources[Socket].MmiolResourceNeeds != 0) && (Take >= SocketResources[Socket].MmiolResourceNeeds)) {
- Take -= SocketResources[Socket].MmiolResourceNeeds;
- DEBUG((DEBUG_ERROR, "SocketResources[%x].MmiolResourceNeeds = %x\n", Socket, SocketResources[Socket].MmiolResourceNeeds));
- SocketResources[Socket].MmiolResourceNeeds = 0;
- }
- }
- //
- // Give away leftover resources
- //
- LastStack = LastStackOfSocket (LastSocket);
- if (Take != 0) {
- if (SocketResources[LastSocket].StackRes[LastStack].MmiolLength != 0) {
- SocketResources[LastSocket].StackRes[LastStack].MmiolLength += (UINT32)Take;
- } else{
- SocketResources[LastSocket].StackRes[LastStack].MmiolLength += ((UINT32)Take - 1);
- }
- }
- //
- // Verify all resource requested can fit into the systems address range.
- //
- TotalResourceSize = 0;
- for (Socket = 0; Socket < ValidSockets; Socket++) {
- LastStackWithResources (&SocketResources[Socket], Socket, ResourceType, &LastStack, &ResourceSize);
- TotalResourceSize += ResourceSize + UboxMmioSize;
- }
- DEBUG ((DEBUG_INFO, "Total Request MMIOL Range = %08Xh\n", TotalResourceSize));
- DEBUG ((DEBUG_INFO, "Total System MMIOL Range = %08Xh\n", (TempMmioLimit - TempMmioBase + 1)));
- if (TotalResourceSize > (TempMmioLimit - TempMmioBase + 1)) {
- //
- // Not enough system resources to support the request.
- // Remove all request to update NVRAM variable for this resource type.
- //
- for (Socket = 0; Socket < ValidSockets; Socket ++) {
- for (Stack = 0; Stack < MAX_IIO_STACK; Stack ++) {
- if (!(mIioUds->IioUdsPtr->PlatformData.CpuQpiInfo[Socket].stackPresentBitmap & (1 << Stack))) {
- continue;
- }
- SocketResources[Socket].StackRes[Stack].MmiolUpdate = 0;
- }
- }
- DEBUG ((DEBUG_ERROR, "[PCI] ERROR: Out of adjustable MMIOL resources. Can't adjust across sockets\n"));
- return EFI_OUT_OF_RESOURCES;
- }
- DEBUG ((DEBUG_ERROR, "Assigning new socket MMIOL range...\n"));
- for (Socket = 0, TempMmioLimit = TempMmioBase - 1; Socket < ValidSockets; Socket ++) {
- SocketResources[Socket].MmiolBase = TempMmioLimit + 1;
- //
- // Update the stacks base and limit values.
- //
- for (Stack = 0; Stack < MAX_IIO_STACK; Stack++) {
- if (!(mIioUds->IioUdsPtr->PlatformData.CpuQpiInfo[Socket].stackPresentBitmap & (1 << Stack))) {
- SocketResources[Socket].StackRes[Stack].MmiolBase = 0;
- SocketResources[Socket].StackRes[Stack].MmiolLimit = 0;
- } else {
- SocketResources[Socket].StackRes[Stack].MmiolBase = TempMmioLimit + 1;
- if (SocketResources[Socket].StackRes[Stack].MmiolLength != 0) {
- //
- // MmiolLength is actually length-1, so we should move TempMmioLimit by MmiolLength+1,
- // but only when it is >0, i.e. only for stack that has resources.
- //
- TempMmioLimit += SocketResources[Socket].StackRes[Stack].MmiolLength + 1;
- SocketResources[Socket].StackRes[Stack].MmiolLimit = TempMmioLimit;
- } else {
- SocketResources[Socket].StackRes[Stack].MmiolLimit = SocketResources[Socket].StackRes[Stack].MmiolBase;
- }
- SocketResources[Socket].StackRes[Stack].MmiolUpdate = 1;
- }
- DEBUG ((DEBUG_ERROR, "SocketResources[%x].StackRes[%x].MmiolBase = %X newLength = %x\n", Socket, Stack,
- SocketResources[Socket].StackRes[Stack].MmiolBase, SocketResources[Socket].StackRes[Stack].MmiolLength));
- DEBUG ((DEBUG_ERROR, "SocketResources[%x].StackRes[%x].MmiolLimit = %X\n", Socket, Stack,
- SocketResources[Socket].StackRes[Stack].MmiolLimit));
- DEBUG ((DEBUG_ERROR, "SocketResources[%x].StackRes[%x].MmiolUpdate= %d\n", Socket, Stack,
- SocketResources[Socket].StackRes[Stack].MmiolUpdate));
- } // for (Stack...)
- //
- // In the socket resources there can be UBOX, unfortunatelly not exposed in stackPresentBitmap
- // so it has to be handled with such uguly hacks.
- //
- TempMmioLimit += UboxMmioSize;
- SocketResources[Socket].MmiolLimit = TempMmioLimit;
- } // for (Socket...)
- return EFI_SUCCESS;
- }
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