diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/executer/exregion.c')
-rw-r--r-- | sys/contrib/dev/acpica/components/executer/exregion.c | 565 |
1 files changed, 565 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/executer/exregion.c b/sys/contrib/dev/acpica/components/executer/exregion.c new file mode 100644 index 000000000000..036a5cbf8cd2 --- /dev/null +++ b/sys/contrib/dev/acpica/components/executer/exregion.c @@ -0,0 +1,565 @@ + +/****************************************************************************** + * + * Module Name: exregion - ACPI default OpRegion (address space) handlers + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, 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 MERCHANTIBILITY 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. + */ + + +#define __EXREGION_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/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; + 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 ((Address < MemInfo->MappedPhysicalAddress) || + (((UINT64) Address + Length) > + ((UINT64) + MemInfo->MappedPhysicalAddress + MemInfo->MappedLength))) + { + /* + * The request cannot be resolved by the current memory mapping; + * Delete the existing mapping and create a new one. + */ + if (MemInfo->MappedLength) + { + /* Valid mapping, delete it */ + + AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress, + MemInfo->MappedLength); + } + + /* + * 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_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 */ + + MemInfo->MappedLogicalAddress = AcpiOsMapMemory ( + (ACPI_PHYSICAL_ADDRESS) Address, MapLength); + if (!MemInfo->MappedLogicalAddress) + { + ACPI_ERROR ((AE_INFO, + "Could not map memory at 0x%8.8X%8.8X, size %u", + ACPI_FORMAT_NATIVE_UINT (Address), (UINT32) MapLength)); + MemInfo->MappedLength = 0; + return_ACPI_STATUS (AE_NO_MEMORY); + } + + /* Save the physical address and mapping size */ + + MemInfo->MappedPhysicalAddress = Address; + MemInfo->MappedLength = MapLength; + } + + /* + * Generate a logical pointer corresponding to the address we want to + * access + */ + LogicalAddrPtr = MemInfo->MappedLogicalAddress + + ((UINT64) Address - (UINT64) MemInfo->MappedPhysicalAddress); + + ACPI_DEBUG_PRINT ((ACPI_DB_INFO, + "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n", + BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (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) = (UINT8) *Value; + break; + + case 16: + ACPI_SET16 (LogicalAddrPtr) = (UINT16) *Value; + break; + + case 32: + ACPI_SET32 ( LogicalAddrPtr) = (UINT32) *Value; + break; + + case 64: + ACPI_SET64 (LogicalAddrPtr) = (UINT64) *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_NATIVE_UINT (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_FUNCTION_TRACE (ExDataTableSpaceHandler); + + + /* + * Perform the memory read or write. The BitWidth was already + * validated. + */ + switch (Function) + { + case ACPI_READ: + + ACPI_MEMCPY (ACPI_CAST_PTR (char, Value), ACPI_PHYSADDR_TO_PTR (Address), + ACPI_DIV_8 (BitWidth)); + break; + + case ACPI_WRITE: + + ACPI_MEMCPY (ACPI_PHYSADDR_TO_PTR (Address), ACPI_CAST_PTR (char, Value), + ACPI_DIV_8 (BitWidth)); + break; + + default: + + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + return_ACPI_STATUS (AE_OK); +} + + |