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+
+/******************************************************************************
+ *
+ * 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);
+}
+
+
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