| /****************************************************************************** |
| * |
| * Module Name: exregion - ACPI default OpRegion (address space) handlers |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2023, Intel Corp. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acinterp.h" |
| |
| |
| #define _COMPONENT ACPI_EXECUTER |
| ACPI_MODULE_NAME ("exregion") |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExSystemMemorySpaceHandler |
| * |
| * PARAMETERS: Function - Read or Write operation |
| * Address - Where in the space to read or write |
| * BitWidth - Field width in bits (8, 16, or 32) |
| * Value - Pointer to in or out value |
| * HandlerContext - Pointer to Handler's context |
| * RegionContext - Pointer to context specific to the |
| * accessed region |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Handler for the System Memory address space (Op Region) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExSystemMemorySpaceHandler ( |
| UINT32 Function, |
| ACPI_PHYSICAL_ADDRESS Address, |
| UINT32 BitWidth, |
| UINT64 *Value, |
| void *HandlerContext, |
| void *RegionContext) |
| { |
| ACPI_STATUS Status = AE_OK; |
| void *LogicalAddrPtr = NULL; |
| ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext; |
| ACPI_MEM_MAPPING *Mm = MemInfo->CurMm; |
| UINT32 Length; |
| ACPI_SIZE MapLength; |
| ACPI_SIZE PageBoundaryMapLength; |
| #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
| UINT32 Remainder; |
| #endif |
| |
| |
| ACPI_FUNCTION_TRACE (ExSystemMemorySpaceHandler); |
| |
| |
| /* Validate and translate the bit width */ |
| |
| switch (BitWidth) |
| { |
| case 8: |
| |
| Length = 1; |
| break; |
| |
| case 16: |
| |
| Length = 2; |
| break; |
| |
| case 32: |
| |
| Length = 4; |
| break; |
| |
| case 64: |
| |
| Length = 8; |
| break; |
| |
| default: |
| |
| ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %u", |
| BitWidth)); |
| return_ACPI_STATUS (AE_AML_OPERAND_VALUE); |
| } |
| |
| #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
| /* |
| * Hardware does not support non-aligned data transfers, we must verify |
| * the request. |
| */ |
| (void) AcpiUtShortDivide ((UINT64) Address, Length, NULL, &Remainder); |
| if (Remainder != 0) |
| { |
| return_ACPI_STATUS (AE_AML_ALIGNMENT); |
| } |
| #endif |
| |
| /* |
| * Does the request fit into the cached memory mapping? |
| * Is 1) Address below the current mapping? OR |
| * 2) Address beyond the current mapping? |
| */ |
| if (!Mm || (Address < Mm->PhysicalAddress) || |
| ((UINT64) Address + Length > (UINT64) Mm->PhysicalAddress + Mm->Length)) |
| { |
| /* |
| * The request cannot be resolved by the current memory mapping. |
| * |
| * Look for an existing saved mapping covering the address range |
| * at hand. If found, save it as the current one and carry out |
| * the access. |
| */ |
| for (Mm = MemInfo->FirstMm; Mm; Mm = Mm->NextMm) |
| { |
| if (Mm == MemInfo->CurMm) |
| { |
| continue; |
| } |
| |
| if (Address < Mm->PhysicalAddress) |
| { |
| continue; |
| } |
| |
| if ((UINT64) Address + Length > (UINT64) Mm->PhysicalAddress + Mm->Length) |
| { |
| continue; |
| } |
| |
| MemInfo->CurMm = Mm; |
| goto access; |
| } |
| |
| /* Create a new mappings list entry */ |
| |
| Mm = ACPI_ALLOCATE_ZEROED(sizeof(*Mm)); |
| if (!Mm) |
| { |
| ACPI_ERROR((AE_INFO, |
| "Unable to save memory mapping at 0x%8.8X%8.8X, size %u", |
| ACPI_FORMAT_UINT64(Address), Length)); |
| return_ACPI_STATUS(AE_NO_MEMORY); |
| } |
| |
| /* |
| * October 2009: Attempt to map from the requested address to the |
| * end of the region. However, we will never map more than one |
| * page, nor will we cross a page boundary. |
| */ |
| MapLength = (ACPI_SIZE) |
| ((MemInfo->Address + MemInfo->Length) - Address); |
| |
| /* |
| * If mapping the entire remaining portion of the region will cross |
| * a page boundary, just map up to the page boundary, do not cross. |
| * On some systems, crossing a page boundary while mapping regions |
| * can cause warnings if the pages have different attributes |
| * due to resource management. |
| * |
| * This has the added benefit of constraining a single mapping to |
| * one page, which is similar to the original code that used a 4k |
| * maximum window. |
| */ |
| PageBoundaryMapLength = (ACPI_SIZE) |
| (ACPI_ROUND_UP (Address, ACPI_DEFAULT_PAGE_SIZE) - Address); |
| if (PageBoundaryMapLength == 0) |
| { |
| PageBoundaryMapLength = ACPI_DEFAULT_PAGE_SIZE; |
| } |
| |
| if (MapLength > PageBoundaryMapLength) |
| { |
| MapLength = PageBoundaryMapLength; |
| } |
| |
| /* Create a new mapping starting at the address given */ |
| |
| LogicalAddrPtr = AcpiOsMapMemory(Address, MapLength); |
| if (!LogicalAddrPtr) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Could not map memory at 0x%8.8X%8.8X, size %u", |
| ACPI_FORMAT_UINT64 (Address), (UINT32) MapLength)); |
| ACPI_FREE(Mm); |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| /* Save the physical address and mapping size */ |
| |
| Mm->LogicalAddress = LogicalAddrPtr; |
| Mm->PhysicalAddress = Address; |
| Mm->Length = MapLength; |
| |
| /* |
| * Add the new entry to the mappigs list and save it as the |
| * current mapping. |
| */ |
| Mm->NextMm = MemInfo->FirstMm; |
| MemInfo->FirstMm = Mm; |
| MemInfo->CurMm = Mm; |
| } |
| |
| access: |
| /* |
| * Generate a logical pointer corresponding to the address we want to |
| * access |
| */ |
| LogicalAddrPtr = Mm->LogicalAddress + |
| ((UINT64) Address - (UINT64) Mm->PhysicalAddress); |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
| "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n", |
| BitWidth, Function, ACPI_FORMAT_UINT64 (Address))); |
| |
| /* |
| * Perform the memory read or write |
| * |
| * Note: For machines that do not support non-aligned transfers, the target |
| * address was checked for alignment above. We do not attempt to break the |
| * transfer up into smaller (byte-size) chunks because the AML specifically |
| * asked for a transfer width that the hardware may require. |
| */ |
| switch (Function) |
| { |
| case ACPI_READ: |
| |
| *Value = 0; |
| switch (BitWidth) |
| { |
| case 8: |
| |
| *Value = (UINT64) ACPI_GET8 (LogicalAddrPtr); |
| break; |
| |
| case 16: |
| |
| *Value = (UINT64) ACPI_GET16 (LogicalAddrPtr); |
| break; |
| |
| case 32: |
| |
| *Value = (UINT64) ACPI_GET32 (LogicalAddrPtr); |
| break; |
| |
| case 64: |
| |
| *Value = (UINT64) ACPI_GET64 (LogicalAddrPtr); |
| break; |
| |
| default: |
| |
| /* BitWidth was already validated */ |
| |
| break; |
| } |
| break; |
| |
| case ACPI_WRITE: |
| |
| switch (BitWidth) |
| { |
| case 8: |
| |
| ACPI_SET8 (LogicalAddrPtr, *Value); |
| break; |
| |
| case 16: |
| |
| ACPI_SET16 (LogicalAddrPtr, *Value); |
| break; |
| |
| case 32: |
| |
| ACPI_SET32 (LogicalAddrPtr, *Value); |
| break; |
| |
| case 64: |
| |
| ACPI_SET64 (LogicalAddrPtr, *Value); |
| break; |
| |
| default: |
| |
| /* BitWidth was already validated */ |
| |
| break; |
| } |
| break; |
| |
| default: |
| |
| Status = AE_BAD_PARAMETER; |
| break; |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExSystemIoSpaceHandler |
| * |
| * PARAMETERS: Function - Read or Write operation |
| * Address - Where in the space to read or write |
| * BitWidth - Field width in bits (8, 16, or 32) |
| * Value - Pointer to in or out value |
| * HandlerContext - Pointer to Handler's context |
| * RegionContext - Pointer to context specific to the |
| * accessed region |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Handler for the System IO address space (Op Region) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExSystemIoSpaceHandler ( |
| UINT32 Function, |
| ACPI_PHYSICAL_ADDRESS Address, |
| UINT32 BitWidth, |
| UINT64 *Value, |
| void *HandlerContext, |
| void *RegionContext) |
| { |
| ACPI_STATUS Status = AE_OK; |
| UINT32 Value32; |
| |
| |
| ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler); |
| |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
| "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n", |
| BitWidth, Function, ACPI_FORMAT_UINT64 (Address))); |
| |
| /* Decode the function parameter */ |
| |
| switch (Function) |
| { |
| case ACPI_READ: |
| |
| Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address, |
| &Value32, BitWidth); |
| *Value = Value32; |
| break; |
| |
| case ACPI_WRITE: |
| |
| Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address, |
| (UINT32) *Value, BitWidth); |
| break; |
| |
| default: |
| |
| Status = AE_BAD_PARAMETER; |
| break; |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExPciConfigSpaceHandler |
| * |
| * PARAMETERS: Function - Read or Write operation |
| * Address - Where in the space to read or write |
| * BitWidth - Field width in bits (8, 16, or 32) |
| * Value - Pointer to in or out value |
| * HandlerContext - Pointer to Handler's context |
| * RegionContext - Pointer to context specific to the |
| * accessed region |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Handler for the PCI Config address space (Op Region) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExPciConfigSpaceHandler ( |
| UINT32 Function, |
| ACPI_PHYSICAL_ADDRESS Address, |
| UINT32 BitWidth, |
| UINT64 *Value, |
| void *HandlerContext, |
| void *RegionContext) |
| { |
| ACPI_STATUS Status = AE_OK; |
| ACPI_PCI_ID *PciId; |
| UINT16 PciRegister; |
| |
| |
| ACPI_FUNCTION_TRACE (ExPciConfigSpaceHandler); |
| |
| |
| /* |
| * The arguments to AcpiOs(Read|Write)PciConfiguration are: |
| * |
| * PciSegment is the PCI bus segment range 0-31 |
| * PciBus is the PCI bus number range 0-255 |
| * PciDevice is the PCI device number range 0-31 |
| * PciFunction is the PCI device function number |
| * PciRegister is the Config space register range 0-255 bytes |
| * |
| * Value - input value for write, output address for read |
| * |
| */ |
| PciId = (ACPI_PCI_ID *) RegionContext; |
| PciRegister = (UINT16) (UINT32) Address; |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
| "Pci-Config %u (%u) Seg(%04x) Bus(%04x) " |
| "Dev(%04x) Func(%04x) Reg(%04x)\n", |
| Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device, |
| PciId->Function, PciRegister)); |
| |
| switch (Function) |
| { |
| case ACPI_READ: |
| |
| *Value = 0; |
| Status = AcpiOsReadPciConfiguration ( |
| PciId, PciRegister, Value, BitWidth); |
| break; |
| |
| case ACPI_WRITE: |
| |
| Status = AcpiOsWritePciConfiguration ( |
| PciId, PciRegister, *Value, BitWidth); |
| break; |
| |
| default: |
| |
| Status = AE_BAD_PARAMETER; |
| break; |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExCmosSpaceHandler |
| * |
| * PARAMETERS: Function - Read or Write operation |
| * Address - Where in the space to read or write |
| * BitWidth - Field width in bits (8, 16, or 32) |
| * Value - Pointer to in or out value |
| * HandlerContext - Pointer to Handler's context |
| * RegionContext - Pointer to context specific to the |
| * accessed region |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Handler for the CMOS address space (Op Region) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExCmosSpaceHandler ( |
| UINT32 Function, |
| ACPI_PHYSICAL_ADDRESS Address, |
| UINT32 BitWidth, |
| UINT64 *Value, |
| void *HandlerContext, |
| void *RegionContext) |
| { |
| ACPI_STATUS Status = AE_OK; |
| |
| |
| ACPI_FUNCTION_TRACE (ExCmosSpaceHandler); |
| |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExPciBarSpaceHandler |
| * |
| * PARAMETERS: Function - Read or Write operation |
| * Address - Where in the space to read or write |
| * BitWidth - Field width in bits (8, 16, or 32) |
| * Value - Pointer to in or out value |
| * HandlerContext - Pointer to Handler's context |
| * RegionContext - Pointer to context specific to the |
| * accessed region |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExPciBarSpaceHandler ( |
| UINT32 Function, |
| ACPI_PHYSICAL_ADDRESS Address, |
| UINT32 BitWidth, |
| UINT64 *Value, |
| void *HandlerContext, |
| void *RegionContext) |
| { |
| ACPI_STATUS Status = AE_OK; |
| |
| |
| ACPI_FUNCTION_TRACE (ExPciBarSpaceHandler); |
| |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiExDataTableSpaceHandler |
| * |
| * PARAMETERS: Function - Read or Write operation |
| * Address - Where in the space to read or write |
| * BitWidth - Field width in bits (8, 16, or 32) |
| * Value - Pointer to in or out value |
| * HandlerContext - Pointer to Handler's context |
| * RegionContext - Pointer to context specific to the |
| * accessed region |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Handler for the Data Table address space (Op Region) |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiExDataTableSpaceHandler ( |
| UINT32 Function, |
| ACPI_PHYSICAL_ADDRESS Address, |
| UINT32 BitWidth, |
| UINT64 *Value, |
| void *HandlerContext, |
| void *RegionContext) |
| { |
| ACPI_DATA_TABLE_MAPPING *Mapping; |
| char *Pointer; |
| |
| |
| ACPI_FUNCTION_TRACE (ExDataTableSpaceHandler); |
| |
| |
| Mapping = (ACPI_DATA_TABLE_MAPPING *) RegionContext; |
| Pointer = ACPI_CAST_PTR (char, Mapping->Pointer) + |
| (Address - ACPI_PTR_TO_PHYSADDR (Mapping->Pointer)); |
| |
| /* |
| * Perform the memory read or write. The BitWidth was already |
| * validated. |
| */ |
| switch (Function) |
| { |
| case ACPI_READ: |
| |
| memcpy (ACPI_CAST_PTR (char, Value), Pointer, ACPI_DIV_8 (BitWidth)); |
| break; |
| |
| case ACPI_WRITE: |
| |
| memcpy (Pointer, ACPI_CAST_PTR (char, Value), ACPI_DIV_8 (BitWidth)); |
| break; |
| |
| default: |
| |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| return_ACPI_STATUS (AE_OK); |
| } |
