diff options
Diffstat (limited to 'OvmfPkg/Csm/CsmSupportLib/LegacyInterrupt.c')
| -rw-r--r-- | OvmfPkg/Csm/CsmSupportLib/LegacyInterrupt.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/OvmfPkg/Csm/CsmSupportLib/LegacyInterrupt.c b/OvmfPkg/Csm/CsmSupportLib/LegacyInterrupt.c deleted file mode 100644 index 410e4e457d..0000000000 --- a/OvmfPkg/Csm/CsmSupportLib/LegacyInterrupt.c +++ /dev/null @@ -1,212 +0,0 @@ -/** @file
- Legacy Interrupt Support
-
- Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
-
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "LegacyInterrupt.h"
-
-//
-// Handle for the Legacy Interrupt Protocol instance produced by this driver
-//
-STATIC EFI_HANDLE mLegacyInterruptHandle = NULL;
-
-//
-// Legacy Interrupt Device number (0x01 on piix4, 0x1f on q35/mch)
-//
-STATIC UINT8 mLegacyInterruptDevice;
-
-//
-// The Legacy Interrupt Protocol instance produced by this driver
-//
-STATIC EFI_LEGACY_INTERRUPT_PROTOCOL mLegacyInterrupt = {
- GetNumberPirqs,
- GetLocation,
- ReadPirq,
- WritePirq
-};
-
-STATIC UINT8 PirqReg[MAX_PIRQ_NUMBER] = { PIRQA, PIRQB, PIRQC, PIRQD, PIRQE, PIRQF, PIRQG, PIRQH };
-
-/**
- Return the number of PIRQs supported by this chipset.
-
- @param[in] This Pointer to LegacyInterrupt Protocol
- @param[out] NumberPirqs The pointer to return the max IRQ number supported
-
- @retval EFI_SUCCESS Max PIRQs successfully returned
-
-**/
-EFI_STATUS
-EFIAPI
-GetNumberPirqs (
- IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
- OUT UINT8 *NumberPirqs
- )
-{
- *NumberPirqs = MAX_PIRQ_NUMBER;
-
- return EFI_SUCCESS;
-}
-
-/**
- Return PCI location of this device.
- $PIR table requires this info.
-
- @param[in] This - Protocol instance pointer.
- @param[out] Bus - PCI Bus
- @param[out] Device - PCI Device
- @param[out] Function - PCI Function
-
- @retval EFI_SUCCESS Bus/Device/Function returned
-
-**/
-EFI_STATUS
-EFIAPI
-GetLocation (
- IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
- OUT UINT8 *Bus,
- OUT UINT8 *Device,
- OUT UINT8 *Function
- )
-{
- *Bus = LEGACY_INT_BUS;
- *Device = mLegacyInterruptDevice;
- *Function = LEGACY_INT_FUNC;
-
- return EFI_SUCCESS;
-}
-
-/**
- Builds the PCI configuration address for the register specified by PirqNumber
-
- @param[in] PirqNumber - The PIRQ number to build the PCI configuration address for
-
- @return The PCI Configuration address for the PIRQ
-**/
-UINTN
-GetAddress (
- UINT8 PirqNumber
- )
-{
- return PCI_LIB_ADDRESS (
- LEGACY_INT_BUS,
- mLegacyInterruptDevice,
- LEGACY_INT_FUNC,
- PirqReg[PirqNumber]
- );
-}
-
-/**
- Read the given PIRQ register
-
- @param[in] This Protocol instance pointer
- @param[in] PirqNumber The Pirq register 0 = A, 1 = B etc
- @param[out] PirqData Value read
-
- @retval EFI_SUCCESS Decoding change affected.
- @retval EFI_INVALID_PARAMETER Invalid PIRQ number
-
-**/
-EFI_STATUS
-EFIAPI
-ReadPirq (
- IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
- IN UINT8 PirqNumber,
- OUT UINT8 *PirqData
- )
-{
- if (PirqNumber >= MAX_PIRQ_NUMBER) {
- return EFI_INVALID_PARAMETER;
- }
-
- *PirqData = PciRead8 (GetAddress (PirqNumber));
- *PirqData = (UINT8)(*PirqData & 0x7f);
-
- return EFI_SUCCESS;
-}
-
-/**
- Write the given PIRQ register
-
- @param[in] This Protocol instance pointer
- @param[in] PirqNumber The Pirq register 0 = A, 1 = B etc
- @param[out] PirqData Value to write
-
- @retval EFI_SUCCESS Decoding change affected.
- @retval EFI_INVALID_PARAMETER Invalid PIRQ number
-
-**/
-EFI_STATUS
-EFIAPI
-WritePirq (
- IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
- IN UINT8 PirqNumber,
- IN UINT8 PirqData
- )
-{
- if (PirqNumber >= MAX_PIRQ_NUMBER) {
- return EFI_INVALID_PARAMETER;
- }
-
- PciWrite8 (GetAddress (PirqNumber), PirqData);
- return EFI_SUCCESS;
-}
-
-/**
- Initialize Legacy Interrupt support
-
- @retval EFI_SUCCESS Successfully initialized
-
-**/
-EFI_STATUS
-LegacyInterruptInstall (
- VOID
- )
-{
- UINT16 HostBridgeDevId;
- EFI_STATUS Status;
-
- //
- // Make sure the Legacy Interrupt Protocol is not already installed in the system
- //
- ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiLegacyInterruptProtocolGuid);
-
- //
- // Query Host Bridge DID to determine platform type, then set device number
- //
- HostBridgeDevId = PcdGet16 (PcdOvmfHostBridgePciDevId);
- switch (HostBridgeDevId) {
- case INTEL_82441_DEVICE_ID:
- mLegacyInterruptDevice = LEGACY_INT_DEV_PIIX4;
- break;
- case INTEL_Q35_MCH_DEVICE_ID:
- mLegacyInterruptDevice = LEGACY_INT_DEV_Q35;
- break;
- default:
- DEBUG ((
- DEBUG_ERROR,
- "%a: Unknown Host Bridge Device ID: 0x%04x\n",
- __func__,
- HostBridgeDevId
- ));
- ASSERT (FALSE);
- return EFI_UNSUPPORTED;
- }
-
- //
- // Make a new handle and install the protocol
- //
- Status = gBS->InstallMultipleProtocolInterfaces (
- &mLegacyInterruptHandle,
- &gEfiLegacyInterruptProtocolGuid,
- &mLegacyInterrupt,
- NULL
- );
- ASSERT_EFI_ERROR (Status);
-
- return Status;
-}
|