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-rw-r--r--Lesson_31/UefiLessonsPkg/ListPCI/ListPCI.c267
-rw-r--r--Lesson_31/UefiLessonsPkg/ListPCI/ListPCI.inf22
2 files changed, 289 insertions, 0 deletions
diff --git a/Lesson_31/UefiLessonsPkg/ListPCI/ListPCI.c b/Lesson_31/UefiLessonsPkg/ListPCI/ListPCI.c
new file mode 100644
index 0000000..6eb2eef
--- /dev/null
+++ b/Lesson_31/UefiLessonsPkg/ListPCI/ListPCI.c
@@ -0,0 +1,267 @@
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+
+#include <Protocol/PciRootBridgeIo.h>
+#include <Library/MemoryAllocationLib.h>
+#include <IndustryStandard/Pci.h>
+#include <Library/ShellLib.h>
+#include <Library/PrintLib.h>
+
+
+#define DESCRIPTOR_STR_MAX_SIZE 200
+#define BLOCK_READ_SIZE (1024*4)
+
+VOID ToLowerASCII(CHAR8* Str, UINTN Size)
+{
+ for (UINT8 i=0; i<Size; i++) {
+ if ((Str[i]>='A')&&(Str[i]<='Z')) {
+ Str[i]+=32;
+ }
+ }
+}
+
+EFI_STATUS FindPCIDevDescription(UINT16 VendorId,
+ UINT16 DeviceId,
+ CHAR16* VendorDesc,
+ CHAR16* DeviceDesc,
+ UINTN DescBufferSize)
+{
+ EFI_STATUS Status = ShellFileExists(L"pci.ids");
+ if (EFI_ERROR(Status))
+ {
+ Print(L"No file pci.ids: %r\n", Status);
+ return Status;
+ }
+
+ SHELL_FILE_HANDLE FileHandle;
+ Status = ShellOpenFileByName(L"pci.ids",
+ &FileHandle,
+ EFI_FILE_MODE_READ,
+ 0);
+ if (EFI_ERROR(Status))
+ {
+ Print(L"Can't open file pci.ids: %r\n", Status);
+ return Status;
+ }
+
+ UINT64 FileSize;
+ Status = ShellGetFileSize(FileHandle, &FileSize);
+ if (EFI_ERROR(Status))
+ {
+ Print(L"Can't get file size for file pci.ids: %r\n", Status);
+ goto end;
+ }
+
+ CHAR8 VendorStr[5];
+ CHAR8 DeviceStr[5];
+ AsciiValueToStringS(VendorStr,
+ 5,
+ RADIX_HEX | PREFIX_ZERO,
+ VendorId,
+ 4);
+ AsciiValueToStringS(DeviceStr,
+ 5,
+ RADIX_HEX | PREFIX_ZERO,
+ DeviceId,
+ 4);
+ ToLowerASCII(VendorStr, 4);
+ ToLowerASCII(DeviceStr, 4);
+
+ CHAR8 Buffer[BLOCK_READ_SIZE];
+ UINTN Size;
+ UINT64 FilePos = 0;
+ BOOLEAN Vendor_found = FALSE;
+ BOOLEAN Device_found = FALSE;
+ while (TRUE)
+ {
+ Size = BLOCK_READ_SIZE;
+ Status = ShellReadFile(FileHandle, &Size, Buffer);
+ if (EFI_ERROR(Status))
+ {
+ Print(L"Can't read file pci.ids: %r\n", Status);
+ goto end;
+ }
+ UINTN StrStart = 0;
+ UINTN StrEnd = 0;
+ for (UINTN i=0; i<Size; i++) {
+ if (Buffer[i]=='\n') {
+ StrEnd=i;
+ if (!Vendor_found){
+ // 0123456 7
+ //\nXXXX |<desc>|\n
+ if ((StrEnd - StrStart) > 7) {
+ if ((Buffer[StrStart+1]==VendorStr[0]) &&
+ (Buffer[StrStart+2]==VendorStr[1]) &&
+ (Buffer[StrStart+3]==VendorStr[2]) &&
+ (Buffer[StrStart+4]==VendorStr[3])) {
+ Buffer[StrEnd] = 0;
+ UnicodeSPrintAsciiFormat(VendorDesc, DescBufferSize, "%a", &Buffer[StrStart+1+4+2]);
+ Vendor_found = TRUE;
+ }
+ }
+ } else {
+ // 0 1234567 8
+ //\n\tXXXX |<desc>|\n
+ if ((StrEnd - StrStart) > 8) {
+ if ((Buffer[StrStart+1]=='\t') &&
+ (Buffer[StrStart+2]==DeviceStr[0]) &&
+ (Buffer[StrStart+3]==DeviceStr[1]) &&
+ (Buffer[StrStart+4]==DeviceStr[2]) &&
+ (Buffer[StrStart+5]==DeviceStr[3])) {
+ Buffer[StrEnd] = 0;
+ UnicodeSPrintAsciiFormat(DeviceDesc, DescBufferSize, "%a", &Buffer[StrStart+1+1+4+2]);
+ Device_found = TRUE;
+ break;
+ }
+ }
+ }
+ StrStart = StrEnd;
+ }
+ }
+
+ if (FilePos+Size >= FileSize) {
+ break;
+ }
+ FilePos += StrEnd;
+ Status = ShellSetFilePosition(FileHandle, FilePos);
+ if (EFI_ERROR(Status))
+ {
+ Print(L"Can't set file position pci.ids: %r\n", Status);
+ goto end;
+ }
+ }
+
+end:
+ if (!Vendor_found) {
+ UnicodeSPrint(VendorDesc, DescBufferSize, L"Undefined");
+ }
+ if (!Device_found) {
+ UnicodeSPrint(DeviceDesc, DescBufferSize, L"Undefined");
+ }
+ ShellCloseFile(&FileHandle);
+
+ return Status;
+}
+
+
+UINT64 PciConfigurationAddress(UINT8 Bus,
+ UINT8 Device,
+ UINT8 Function,
+ UINT32 Register)
+{
+ UINT64 Address = (((UINT64)Bus) << 24) + (((UINT64)Device) << 16) + (((UINT64)Function) << 8);
+ if (Register & 0xFFFFFF00) {
+ Address += (((UINT64)Register) << 32);
+ } else {
+ Address += (((UINT64)Register) << 0);
+ }
+ return Address;
+}
+
+
+EFI_STATUS PrintRootBridge(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL* PciRootBridgeIo)
+{
+ EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR* AddressDescriptor;
+ EFI_STATUS Status = PciRootBridgeIo->Configuration(
+ PciRootBridgeIo,
+ (VOID**)&AddressDescriptor
+ );
+ if (EFI_ERROR(Status)) {
+ Print(L"\tError! Can't get EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR: %r\n", Status);
+ return Status;
+ }
+ while (AddressDescriptor->Desc != ACPI_END_TAG_DESCRIPTOR) {
+ if (AddressDescriptor->ResType == ACPI_ADDRESS_SPACE_TYPE_BUS) {
+ for (UINT8 Bus = AddressDescriptor->AddrRangeMin; Bus <= AddressDescriptor->AddrRangeMax; Bus++) {
+ for (UINT8 Device = 0; Device <= PCI_MAX_DEVICE; Device++) {
+ for (UINT8 Func = 0; Func <= PCI_MAX_FUNC; Func++) {
+ UINT64 Address = PciConfigurationAddress(Bus, Device, Func, 0);
+ PCI_DEVICE_INDEPENDENT_REGION PCIConfHdr;
+ Status = PciRootBridgeIo->Pci.Read(
+ PciRootBridgeIo,
+ EfiPciWidthUint8,
+ Address,
+ sizeof(PCI_DEVICE_INDEPENDENT_REGION),
+ &PCIConfHdr
+ );
+ if (!EFI_ERROR(Status)) {
+ if (PCIConfHdr.VendorId != 0xffff) {
+ Print(L"\t%02x:%02x.%02x - Vendor:%04x, Device:%04x",
+ Bus,
+ Device,
+ Func,
+ PCIConfHdr.VendorId,
+ PCIConfHdr.DeviceId);
+
+ CHAR16 VendorDesc[DESCRIPTOR_STR_MAX_SIZE];
+ CHAR16 DeviceDesc[DESCRIPTOR_STR_MAX_SIZE];
+ Status = FindPCIDevDescription(PCIConfHdr.VendorId,
+ PCIConfHdr.DeviceId,
+ VendorDesc,
+ DeviceDesc,
+ DESCRIPTOR_STR_MAX_SIZE);
+ if (!EFI_ERROR(Status)) {
+ Print(L": %s, %s\n", VendorDesc, DeviceDesc);
+ } else {
+ Print(L"\n");
+ }
+ }
+ } else {
+ Print(L"\tError in PCI read: %r\n", Status);
+ }
+ }
+ }
+ }
+ }
+ AddressDescriptor++;
+ }
+ return Status;
+}
+
+EFI_STATUS
+EFIAPI
+UefiMain (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ UINTN HandleCount;
+ EFI_HANDLE *HandleBuffer;
+ Status = gBS->LocateHandleBuffer(
+ ByProtocol,
+ &gEfiPciRootBridgeIoProtocolGuid,
+ NULL,
+ &HandleCount,
+ &HandleBuffer
+ );
+ if (EFI_ERROR (Status)) {
+ Print(L"Can't locate EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL: %r\n", Status);
+ return Status;
+ }
+
+ Print(L"Number of PCI root bridges in the system: %d\n", HandleCount);
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL* PciRootBridgeIo;
+ for (UINTN Index = 0; Index < HandleCount; Index++) {
+ Status = gBS->OpenProtocol (
+ HandleBuffer[Index],
+ &gEfiPciRootBridgeIoProtocolGuid,
+ (VOID **)&PciRootBridgeIo,
+ ImageHandle,
+ NULL,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR(Status)) {
+ Print(L"Can't open protocol: %r\n", Status);
+ return Status;
+ }
+ Print(L"\nPCI Root Bridge %d\n", Index);
+ Status = PrintRootBridge(PciRootBridgeIo);
+ if (EFI_ERROR(Status)) {
+ Print(L"Error in PCI Root Bridge printing\n");
+ }
+ }
+ FreePool(HandleBuffer);
+
+ return EFI_SUCCESS;
+}
diff --git a/Lesson_31/UefiLessonsPkg/ListPCI/ListPCI.inf b/Lesson_31/UefiLessonsPkg/ListPCI/ListPCI.inf
new file mode 100644
index 0000000..0080d75
--- /dev/null
+++ b/Lesson_31/UefiLessonsPkg/ListPCI/ListPCI.inf
@@ -0,0 +1,22 @@
+[Defines]
+ INF_VERSION = 1.25
+ BASE_NAME = ListPCI
+ FILE_GUID = 07aceb78-97df-4e49-84a8-28997896e42a
+ MODULE_TYPE = UEFI_APPLICATION
+ VERSION_STRING = 1.0
+ ENTRY_POINT = UefiMain
+
+[Sources]
+ ListPCI.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ ShellPkg/ShellPkg.dec
+
+[LibraryClasses]
+ UefiApplicationEntryPoint
+ UefiLib
+ ShellLib
+
+[Protocols]
+ gEfiPciRootBridgeIoProtocolGuid
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-27 08:03:10 +0000