diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/tables/tbxface.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/tables/tbxface.c | 527 |
1 files changed, 527 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/tables/tbxface.c b/sys/contrib/dev/acpica/components/tables/tbxface.c new file mode 100644 index 0000000..80381aa --- /dev/null +++ b/sys/contrib/dev/acpica/components/tables/tbxface.c @@ -0,0 +1,527 @@ +/****************************************************************************** + * + * Module Name: tbxface - ACPI table-oriented external interfaces + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2013, 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 __TBXFACE_C__ + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/include/actables.h> + +#define _COMPONENT ACPI_TABLES + ACPI_MODULE_NAME ("tbxface") + + +/******************************************************************************* + * + * FUNCTION: AcpiAllocateRootTable + * + * PARAMETERS: InitialTableCount - Size of InitialTableArray, in number of + * ACPI_TABLE_DESC structures + * + * RETURN: Status + * + * DESCRIPTION: Allocate a root table array. Used by iASL compiler and + * AcpiInitializeTables. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiAllocateRootTable ( + UINT32 InitialTableCount) +{ + + AcpiGbl_RootTableList.MaxTableCount = InitialTableCount; + AcpiGbl_RootTableList.Flags = ACPI_ROOT_ALLOW_RESIZE; + + return (AcpiTbResizeRootTableList ()); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiInitializeTables + * + * PARAMETERS: InitialTableArray - Pointer to an array of pre-allocated + * ACPI_TABLE_DESC structures. If NULL, the + * array is dynamically allocated. + * InitialTableCount - Size of InitialTableArray, in number of + * ACPI_TABLE_DESC structures + * AllowResize - Flag to tell Table Manager if resize of + * pre-allocated array is allowed. Ignored + * if InitialTableArray is NULL. + * + * RETURN: Status + * + * DESCRIPTION: Initialize the table manager, get the RSDP and RSDT/XSDT. + * + * NOTE: Allows static allocation of the initial table array in order + * to avoid the use of dynamic memory in confined environments + * such as the kernel boot sequence where it may not be available. + * + * If the host OS memory managers are initialized, use NULL for + * InitialTableArray, and the table will be dynamically allocated. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiInitializeTables ( + ACPI_TABLE_DESC *InitialTableArray, + UINT32 InitialTableCount, + BOOLEAN AllowResize) +{ + ACPI_PHYSICAL_ADDRESS RsdpAddress; + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (AcpiInitializeTables); + + + /* + * Setup the Root Table Array and allocate the table array + * if requested + */ + if (!InitialTableArray) + { + Status = AcpiAllocateRootTable (InitialTableCount); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + } + else + { + /* Root Table Array has been statically allocated by the host */ + + ACPI_MEMSET (InitialTableArray, 0, + (ACPI_SIZE) InitialTableCount * sizeof (ACPI_TABLE_DESC)); + + AcpiGbl_RootTableList.Tables = InitialTableArray; + AcpiGbl_RootTableList.MaxTableCount = InitialTableCount; + AcpiGbl_RootTableList.Flags = ACPI_ROOT_ORIGIN_UNKNOWN; + if (AllowResize) + { + AcpiGbl_RootTableList.Flags |= ACPI_ROOT_ALLOW_RESIZE; + } + } + + /* Get the address of the RSDP */ + + RsdpAddress = AcpiOsGetRootPointer (); + if (!RsdpAddress) + { + return_ACPI_STATUS (AE_NOT_FOUND); + } + + /* + * Get the root table (RSDT or XSDT) and extract all entries to the local + * Root Table Array. This array contains the information of the RSDT/XSDT + * in a common, more useable format. + */ + Status = AcpiTbParseRootTable (RsdpAddress); + return_ACPI_STATUS (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiInitializeTables) + + +/******************************************************************************* + * + * FUNCTION: AcpiReallocateRootTable + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Reallocate Root Table List into dynamic memory. Copies the + * root list from the previously provided scratch area. Should + * be called once dynamic memory allocation is available in the + * kernel. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiReallocateRootTable ( + void) +{ + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (AcpiReallocateRootTable); + + + /* + * Only reallocate the root table if the host provided a static buffer + * for the table array in the call to AcpiInitializeTables. + */ + if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) + { + return_ACPI_STATUS (AE_SUPPORT); + } + + AcpiGbl_RootTableList.Flags |= ACPI_ROOT_ALLOW_RESIZE; + + Status = AcpiTbResizeRootTableList (); + return_ACPI_STATUS (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiReallocateRootTable) + + +/******************************************************************************* + * + * FUNCTION: AcpiGetTableHeader + * + * PARAMETERS: Signature - ACPI signature of needed table + * Instance - Which instance (for SSDTs) + * OutTableHeader - The pointer to the table header to fill + * + * RETURN: Status and pointer to mapped table header + * + * DESCRIPTION: Finds an ACPI table header. + * + * NOTE: Caller is responsible in unmapping the header with + * AcpiOsUnmapMemory + * + ******************************************************************************/ + +ACPI_STATUS +AcpiGetTableHeader ( + char *Signature, + UINT32 Instance, + ACPI_TABLE_HEADER *OutTableHeader) +{ + UINT32 i; + UINT32 j; + ACPI_TABLE_HEADER *Header; + + + /* Parameter validation */ + + if (!Signature || !OutTableHeader) + { + return (AE_BAD_PARAMETER); + } + + /* Walk the root table list */ + + for (i = 0, j = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) + { + if (!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), + Signature)) + { + continue; + } + + if (++j < Instance) + { + continue; + } + + if (!AcpiGbl_RootTableList.Tables[i].Pointer) + { + if ((AcpiGbl_RootTableList.Tables[i].Flags & + ACPI_TABLE_ORIGIN_MASK) == + ACPI_TABLE_ORIGIN_MAPPED) + { + Header = AcpiOsMapMemory ( + AcpiGbl_RootTableList.Tables[i].Address, + sizeof (ACPI_TABLE_HEADER)); + if (!Header) + { + return (AE_NO_MEMORY); + } + + ACPI_MEMCPY (OutTableHeader, Header, + sizeof (ACPI_TABLE_HEADER)); + AcpiOsUnmapMemory (Header, sizeof (ACPI_TABLE_HEADER)); + } + else + { + return (AE_NOT_FOUND); + } + } + else + { + ACPI_MEMCPY (OutTableHeader, + AcpiGbl_RootTableList.Tables[i].Pointer, + sizeof (ACPI_TABLE_HEADER)); + } + + return (AE_OK); + } + + return (AE_NOT_FOUND); +} + +ACPI_EXPORT_SYMBOL (AcpiGetTableHeader) + + +/******************************************************************************* + * + * FUNCTION: AcpiGetTable + * + * PARAMETERS: Signature - ACPI signature of needed table + * Instance - Which instance (for SSDTs) + * OutTable - Where the pointer to the table is returned + * + * RETURN: Status and pointer to the requested table + * + * DESCRIPTION: Finds and verifies an ACPI table. Table must be in the + * RSDT/XSDT. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiGetTable ( + char *Signature, + UINT32 Instance, + ACPI_TABLE_HEADER **OutTable) +{ + UINT32 i; + UINT32 j; + ACPI_STATUS Status; + + + /* Parameter validation */ + + if (!Signature || !OutTable) + { + return (AE_BAD_PARAMETER); + } + + /* Walk the root table list */ + + for (i = 0, j = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) + { + if (!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), + Signature)) + { + continue; + } + + if (++j < Instance) + { + continue; + } + + Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); + if (ACPI_SUCCESS (Status)) + { + *OutTable = AcpiGbl_RootTableList.Tables[i].Pointer; + } + + return (Status); + } + + return (AE_NOT_FOUND); +} + +ACPI_EXPORT_SYMBOL (AcpiGetTable) + + +/******************************************************************************* + * + * FUNCTION: AcpiGetTableByIndex + * + * PARAMETERS: TableIndex - Table index + * Table - Where the pointer to the table is returned + * + * RETURN: Status and pointer to the requested table + * + * DESCRIPTION: Obtain a table by an index into the global table list. Used + * internally also. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiGetTableByIndex ( + UINT32 TableIndex, + ACPI_TABLE_HEADER **Table) +{ + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (AcpiGetTableByIndex); + + + /* Parameter validation */ + + if (!Table) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); + + /* Validate index */ + + if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount) + { + (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + if (!AcpiGbl_RootTableList.Tables[TableIndex].Pointer) + { + /* Table is not mapped, map it */ + + Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[TableIndex]); + if (ACPI_FAILURE (Status)) + { + (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); + return_ACPI_STATUS (Status); + } + } + + *Table = AcpiGbl_RootTableList.Tables[TableIndex].Pointer; + (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); + return_ACPI_STATUS (AE_OK); +} + +ACPI_EXPORT_SYMBOL (AcpiGetTableByIndex) + + +/******************************************************************************* + * + * FUNCTION: AcpiInstallTableHandler + * + * PARAMETERS: Handler - Table event handler + * Context - Value passed to the handler on each event + * + * RETURN: Status + * + * DESCRIPTION: Install a global table event handler. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiInstallTableHandler ( + ACPI_TABLE_HANDLER Handler, + void *Context) +{ + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (AcpiInstallTableHandler); + + + if (!Handler) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Don't allow more than one handler */ + + if (AcpiGbl_TableHandler) + { + Status = AE_ALREADY_EXISTS; + goto Cleanup; + } + + /* Install the handler */ + + AcpiGbl_TableHandler = Handler; + AcpiGbl_TableHandlerContext = Context; + +Cleanup: + (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); + return_ACPI_STATUS (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiInstallTableHandler) + + +/******************************************************************************* + * + * FUNCTION: AcpiRemoveTableHandler + * + * PARAMETERS: Handler - Table event handler that was installed + * previously. + * + * RETURN: Status + * + * DESCRIPTION: Remove a table event handler + * + ******************************************************************************/ + +ACPI_STATUS +AcpiRemoveTableHandler ( + ACPI_TABLE_HANDLER Handler) +{ + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE (AcpiRemoveTableHandler); + + + Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Make sure that the installed handler is the same */ + + if (!Handler || + Handler != AcpiGbl_TableHandler) + { + Status = AE_BAD_PARAMETER; + goto Cleanup; + } + + /* Remove the handler */ + + AcpiGbl_TableHandler = NULL; + +Cleanup: + (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); + return_ACPI_STATUS (Status); +} + +ACPI_EXPORT_SYMBOL (AcpiRemoveTableHandler) |
