static ACPI_STATUS AcpiDbDisplayNonRootHandlers ( ACPI_HANDLE ObjHandle, UINT32 NestingLevel, void *Context, void **ReturnValue) { ACPI_NAMESPACE_NODE *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle); ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; char *Pathname; ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { return (AE_OK); } Pathname = AcpiNsGetNormalizedPathname (Node, TRUE); if (!Pathname) { return (AE_OK); } /* Display all handlers associated with this device */ HandlerObj = ObjDesc->Device.Handler; while (HandlerObj) { AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, AcpiUtGetRegionName ((UINT8) HandlerObj->AddressSpace.SpaceId), HandlerObj->AddressSpace.SpaceId); AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING2, (HandlerObj->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) ? "Default" : "User", HandlerObj->AddressSpace.Handler); AcpiOsPrintf (" Device Name: %s (%p)\n", Pathname, Node); HandlerObj = HandlerObj->AddressSpace.Next; } ACPI_FREE (Pathname); return (AE_OK); }
ACPI_STATUS AcpiHwWrite ( UINT32 Value, ACPI_GENERIC_ADDRESS *Reg) { UINT64 Address; ACPI_STATUS Status; ACPI_FUNCTION_NAME (HwWrite); /* Validate contents of the GAS register */ Status = AcpiHwValidateRegister (Reg, 32, &Address); if (ACPI_FAILURE (Status)) { return (Status); } /* * Two address spaces supported: Memory or IO. PCI_Config is * not supported here because the GAS structure is insufficient */ if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY) { Status = AcpiOsWriteMemory ((ACPI_PHYSICAL_ADDRESS) Address, (UINT64) Value, Reg->BitWidth); } else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ { Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address, Value, Reg->BitWidth); } ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Wrote: %8.8X width %2d to %8.8X%8.8X (%s)\n", Value, Reg->BitWidth, ACPI_FORMAT_UINT64 (Address), AcpiUtGetRegionName (Reg->SpaceId))); return (Status); }
static ACPI_STATUS AcpiDbTestOneObject ( ACPI_HANDLE ObjHandle, UINT32 NestingLevel, void *Context, void **ReturnValue) { ACPI_NAMESPACE_NODE *Node; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *RegionObj; ACPI_OBJECT_TYPE LocalType; UINT32 BitLength = 0; UINT32 ByteLength = 0; ACPI_STATUS Status = AE_OK; Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle); ObjDesc = Node->Object; /* * For the supported types, get the actual bit length or * byte length. Map the type to one of Integer/String/Buffer. */ switch (Node->Type) { case ACPI_TYPE_INTEGER: /* Integer width is either 32 or 64 */ LocalType = ACPI_TYPE_INTEGER; BitLength = AcpiGbl_IntegerBitWidth; break; case ACPI_TYPE_STRING: LocalType = ACPI_TYPE_STRING; ByteLength = ObjDesc->String.Length; break; case ACPI_TYPE_BUFFER: LocalType = ACPI_TYPE_BUFFER; ByteLength = ObjDesc->Buffer.Length; BitLength = ByteLength * 8; break; case ACPI_TYPE_FIELD_UNIT: case ACPI_TYPE_BUFFER_FIELD: case ACPI_TYPE_LOCAL_REGION_FIELD: case ACPI_TYPE_LOCAL_INDEX_FIELD: case ACPI_TYPE_LOCAL_BANK_FIELD: LocalType = ACPI_TYPE_INTEGER; if (ObjDesc) { /* * Returned object will be a Buffer if the field length * is larger than the size of an Integer (32 or 64 bits * depending on the DSDT version). */ BitLength = ObjDesc->CommonField.BitLength; ByteLength = ACPI_ROUND_BITS_UP_TO_BYTES (BitLength); if (BitLength > AcpiGbl_IntegerBitWidth) { LocalType = ACPI_TYPE_BUFFER; } } break; default: /* Ignore all other types */ return (AE_OK); } /* Emit the common prefix: Type:Name */ AcpiOsPrintf ("%14s: %4.4s", AcpiUtGetTypeName (Node->Type), Node->Name.Ascii); if (!ObjDesc) { AcpiOsPrintf (" Ignoring, no attached object\n"); return (AE_OK); } /* * Check for unsupported region types. Note: AcpiExec simulates * access to SystemMemory, SystemIO, PCI_Config, and EC. */ switch (Node->Type) { case ACPI_TYPE_LOCAL_REGION_FIELD: RegionObj = ObjDesc->Field.RegionObj; switch (RegionObj->Region.SpaceId) { case ACPI_ADR_SPACE_SYSTEM_MEMORY: case ACPI_ADR_SPACE_SYSTEM_IO: case ACPI_ADR_SPACE_PCI_CONFIG: case ACPI_ADR_SPACE_EC: break; default: AcpiOsPrintf (" %s space is not supported [%4.4s]\n", AcpiUtGetRegionName (RegionObj->Region.SpaceId), RegionObj->Region.Node->Name.Ascii); return (AE_OK); } break; default: break; } /* At this point, we have resolved the object to one of the major types */ switch (LocalType) { case ACPI_TYPE_INTEGER: Status = AcpiDbTestIntegerType (Node, BitLength); break; case ACPI_TYPE_STRING: Status = AcpiDbTestStringType (Node, ByteLength); break; case ACPI_TYPE_BUFFER: Status = AcpiDbTestBufferType (Node, BitLength); break; default: AcpiOsPrintf (" Ignoring, type not implemented (%2.2X)", LocalType); break; } switch (Node->Type) { case ACPI_TYPE_LOCAL_REGION_FIELD: RegionObj = ObjDesc->Field.RegionObj; AcpiOsPrintf (" (%s)", AcpiUtGetRegionName (RegionObj->Region.SpaceId)); break; default: break; } AcpiOsPrintf ("\n"); return (Status); }
ACPI_STATUS AcpiEvAddressSpaceDispatch ( ACPI_OPERAND_OBJECT *RegionObj, UINT32 Function, UINT32 RegionOffset, UINT32 BitWidth, UINT64 *Value) { ACPI_STATUS Status; ACPI_ADR_SPACE_HANDLER Handler; ACPI_ADR_SPACE_SETUP RegionSetup; ACPI_OPERAND_OBJECT *HandlerDesc; ACPI_OPERAND_OBJECT *RegionObj2; void *RegionContext = NULL; ACPI_FUNCTION_TRACE (EvAddressSpaceDispatch); RegionObj2 = AcpiNsGetSecondaryObject (RegionObj); if (!RegionObj2) { return_ACPI_STATUS (AE_NOT_EXIST); } /* Ensure that there is a handler associated with this region */ HandlerDesc = RegionObj->Region.Handler; if (!HandlerDesc) { ACPI_ERROR ((AE_INFO, "No handler for Region [%4.4s] (%p) [%s]", AcpiUtGetNodeName (RegionObj->Region.Node), RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId))); return_ACPI_STATUS (AE_NOT_EXIST); } /* * It may be the case that the region has never been initialized. * Some types of regions require special init code */ if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)) { /* This region has not been initialized yet, do it */ RegionSetup = HandlerDesc->AddressSpace.Setup; if (!RegionSetup) { /* No initialization routine, exit with error */ ACPI_ERROR ((AE_INFO, "No init routine for region(%p) [%s]", RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId))); return_ACPI_STATUS (AE_NOT_EXIST); } /* * We must exit the interpreter because the region setup will * potentially execute control methods (for example, the _REG method * for this region) */ AcpiExExitInterpreter (); Status = RegionSetup (RegionObj, ACPI_REGION_ACTIVATE, HandlerDesc->AddressSpace.Context, &RegionContext); /* Re-enter the interpreter */ AcpiExEnterInterpreter (); /* Check for failure of the Region Setup */ if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During region initialization: [%s]", AcpiUtGetRegionName (RegionObj->Region.SpaceId))); return_ACPI_STATUS (Status); } /* Region initialization may have been completed by RegionSetup */ if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)) { RegionObj->Region.Flags |= AOPOBJ_SETUP_COMPLETE; if (RegionObj2->Extra.RegionContext) { /* The handler for this region was already installed */ ACPI_FREE (RegionContext); } else { /* * Save the returned context for use in all accesses to * this particular region */ RegionObj2->Extra.RegionContext = RegionContext; } } } /* We have everything we need, we can invoke the address space handler */ Handler = HandlerDesc->AddressSpace.Handler; ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Handler %p (@%p) Address %8.8X%8.8X [%s]\n", &RegionObj->Region.Handler->AddressSpace, Handler, ACPI_FORMAT_NATIVE_UINT (RegionObj->Region.Address + RegionOffset), AcpiUtGetRegionName (RegionObj->Region.SpaceId))); if (!(HandlerDesc->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { /* * For handlers other than the default (supplied) handlers, we must * exit the interpreter because the handler *might* block -- we don't * know what it will do, so we can't hold the lock on the intepreter. */ AcpiExExitInterpreter(); } /* Call the handler */ Status = Handler (Function, (RegionObj->Region.Address + RegionOffset), BitWidth, Value, HandlerDesc->AddressSpace.Context, RegionObj2->Extra.RegionContext); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "Returned by Handler for [%s]", AcpiUtGetRegionName (RegionObj->Region.SpaceId))); } if (!(HandlerDesc->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { /* * We just returned from a non-default handler, we must re-enter the * interpreter */ AcpiExEnterInterpreter (); } return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiRemoveAddressSpaceHandler ( ACPI_HANDLE Device, ACPI_ADR_SPACE_TYPE SpaceId, ACPI_ADR_SPACE_HANDLER Handler) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *RegionObj; ACPI_OPERAND_OBJECT **LastObjPtr; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiRemoveAddressSpaceHandler); /* Parameter validation */ if (!Device) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Convert and validate the device handle */ Node = AcpiNsValidateHandle (Device); if (!Node || ((Node->Type != ACPI_TYPE_DEVICE) && (Node->Type != ACPI_TYPE_PROCESSOR) && (Node->Type != ACPI_TYPE_THERMAL) && (Node != AcpiGbl_RootNode))) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } /* Make sure the internal object exists */ ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { Status = AE_NOT_EXIST; goto UnlockAndExit; } /* Find the address handler the user requested */ HandlerObj = ObjDesc->Device.Handler; LastObjPtr = &ObjDesc->Device.Handler; while (HandlerObj) { /* We have a handler, see if user requested this one */ if (HandlerObj->AddressSpace.SpaceId == SpaceId) { /* Handler must be the same as the installed handler */ if (HandlerObj->AddressSpace.Handler != Handler) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } /* Matched SpaceId, first dereference this in the Regions */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Removing address handler %p(%p) for region %s " "on Device %p(%p)\n", HandlerObj, Handler, AcpiUtGetRegionName (SpaceId), Node, ObjDesc)); RegionObj = HandlerObj->AddressSpace.RegionList; /* Walk the handler's region list */ while (RegionObj) { /* * First disassociate the handler from the region. * * NOTE: this doesn't mean that the region goes away * The region is just inaccessible as indicated to * the _REG method */ AcpiEvDetachRegion (RegionObj, TRUE); /* * Walk the list: Just grab the head because the * DetachRegion removed the previous head. */ RegionObj = HandlerObj->AddressSpace.RegionList; } /* Remove this Handler object from the list */ *LastObjPtr = HandlerObj->AddressSpace.Next; /* Now we can delete the handler object */ AcpiUtRemoveReference (HandlerObj); goto UnlockAndExit; } /* Walk the linked list of handlers */ LastObjPtr = &HandlerObj->AddressSpace.Next; HandlerObj = HandlerObj->AddressSpace.Next; } /* The handler does not exist */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Unable to remove address handler %p for %s(%X), DevNode %p, obj %p\n", Handler, AcpiUtGetRegionName (SpaceId), SpaceId, Node, ObjDesc)); Status = AE_NOT_EXIST; UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiHwWrite ( UINT64 Value, ACPI_GENERIC_ADDRESS *Reg) { UINT64 Address; UINT8 AccessWidth; UINT32 BitWidth; UINT8 BitOffset; UINT64 Value64; UINT8 Index; ACPI_STATUS Status; ACPI_FUNCTION_NAME (HwWrite); /* Validate contents of the GAS register */ Status = AcpiHwValidateRegister (Reg, 64, &Address); if (ACPI_FAILURE (Status)) { return (Status); } /* Convert AccessWidth into number of bits based */ AccessWidth = AcpiHwGetAccessBitWidth (Address, Reg, 64); BitWidth = Reg->BitOffset + Reg->BitWidth; BitOffset = Reg->BitOffset; /* * Two address spaces supported: Memory or IO. PCI_Config is * not supported here because the GAS structure is insufficient */ Index = 0; while (BitWidth) { /* * Use offset style bit reads because "Index * AccessWidth" is * ensured to be less than 64-bits by AcpiHwValidateRegister(). */ Value64 = ACPI_GET_BITS (&Value, Index * AccessWidth, ACPI_MASK_BITS_ABOVE_64 (AccessWidth)); if (BitOffset >= AccessWidth) { BitOffset -= AccessWidth; } else { if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY) { Status = AcpiOsWriteMemory ((ACPI_PHYSICAL_ADDRESS) Address + Index * ACPI_DIV_8 (AccessWidth), Value64, AccessWidth); } else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ { Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address + Index * ACPI_DIV_8 (AccessWidth), (UINT32) Value64, AccessWidth); } } /* * Index * AccessWidth is ensured to be less than 32-bits by * AcpiHwValidateRegister(). */ BitWidth -= BitWidth > AccessWidth ? AccessWidth : BitWidth; Index++; } ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Wrote: %8.8X%8.8X width %2d to %8.8X%8.8X (%s)\n", ACPI_FORMAT_UINT64 (Value), AccessWidth, ACPI_FORMAT_UINT64 (Address), AcpiUtGetRegionName (Reg->SpaceId))); return (Status); }
ACPI_STATUS AcpiExAccessRegion ( ACPI_OPERAND_OBJECT *ObjDesc, UINT32 FieldDatumByteOffset, UINT64 *Value, UINT32 Function) { ACPI_STATUS Status; ACPI_OPERAND_OBJECT *RgnDesc; UINT32 RegionOffset; ACPI_FUNCTION_TRACE (ExAccessRegion); /* * Ensure that the region operands are fully evaluated and verify * the validity of the request */ Status = AcpiExSetupRegion (ObjDesc, FieldDatumByteOffset); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * The physical address of this field datum is: * * 1) The base of the region, plus * 2) The base offset of the field, plus * 3) The current offset into the field */ RgnDesc = ObjDesc->CommonField.RegionObj; RegionOffset = ObjDesc->CommonField.BaseByteOffset + FieldDatumByteOffset; if ((Function & ACPI_IO_MASK) == ACPI_READ) { ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "[READ]")); } else { ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "[WRITE]")); } ACPI_DEBUG_PRINT_RAW ((ACPI_DB_BFIELD, " Region [%s:%X], Width %X, ByteBase %X, Offset %X at %8.8X%8.8X\n", AcpiUtGetRegionName (RgnDesc->Region.SpaceId), RgnDesc->Region.SpaceId, ObjDesc->CommonField.AccessByteWidth, ObjDesc->CommonField.BaseByteOffset, FieldDatumByteOffset, ACPI_FORMAT_UINT64 (RgnDesc->Region.Address + RegionOffset))); /* Invoke the appropriate AddressSpace/OpRegion handler */ Status = AcpiEvAddressSpaceDispatch (RgnDesc, ObjDesc, Function, RegionOffset, ACPI_MUL_8 (ObjDesc->CommonField.AccessByteWidth), Value); if (ACPI_FAILURE (Status)) { if (Status == AE_NOT_IMPLEMENTED) { ACPI_ERROR ((AE_INFO, "Region %s (ID=%u) not implemented", AcpiUtGetRegionName (RgnDesc->Region.SpaceId), RgnDesc->Region.SpaceId)); } else if (Status == AE_NOT_EXIST) { ACPI_ERROR ((AE_INFO, "Region %s (ID=%u) has no handler", AcpiUtGetRegionName (RgnDesc->Region.SpaceId), RgnDesc->Region.SpaceId)); } } return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiEvAddressSpaceDispatch ( ACPI_OPERAND_OBJECT *RegionObj, ACPI_OPERAND_OBJECT *FieldObj, UINT32 Function, UINT32 RegionOffset, UINT32 BitWidth, UINT64 *Value) { ACPI_STATUS Status; ACPI_ADR_SPACE_HANDLER Handler; ACPI_ADR_SPACE_SETUP RegionSetup; ACPI_OPERAND_OBJECT *HandlerDesc; ACPI_OPERAND_OBJECT *RegionObj2; void *RegionContext = NULL; ACPI_CONNECTION_INFO *Context; ACPI_PHYSICAL_ADDRESS Address; ACPI_FUNCTION_TRACE (EvAddressSpaceDispatch); RegionObj2 = AcpiNsGetSecondaryObject (RegionObj); if (!RegionObj2) { return_ACPI_STATUS (AE_NOT_EXIST); } /* Ensure that there is a handler associated with this region */ HandlerDesc = RegionObj->Region.Handler; if (!HandlerDesc) { ACPI_ERROR ((AE_INFO, "No handler for Region [%4.4s] (%p) [%s]", AcpiUtGetNodeName (RegionObj->Region.Node), RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId))); return_ACPI_STATUS (AE_NOT_EXIST); } Context = HandlerDesc->AddressSpace.Context; /* * It may be the case that the region has never been initialized. * Some types of regions require special init code */ if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)) { /* This region has not been initialized yet, do it */ RegionSetup = HandlerDesc->AddressSpace.Setup; if (!RegionSetup) { /* No initialization routine, exit with error */ ACPI_ERROR ((AE_INFO, "No init routine for region(%p) [%s]", RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId))); return_ACPI_STATUS (AE_NOT_EXIST); } /* * We must exit the interpreter because the region setup will * potentially execute control methods (for example, the _REG method * for this region) */ AcpiExExitInterpreter (); Status = RegionSetup (RegionObj, ACPI_REGION_ACTIVATE, Context, &RegionContext); /* Re-enter the interpreter */ AcpiExEnterInterpreter (); /* Check for failure of the Region Setup */ if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During region initialization: [%s]", AcpiUtGetRegionName (RegionObj->Region.SpaceId))); return_ACPI_STATUS (Status); } /* Region initialization may have been completed by RegionSetup */ if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)) { RegionObj->Region.Flags |= AOPOBJ_SETUP_COMPLETE; /* * Save the returned context for use in all accesses to * the handler for this particular region */ if (!(RegionObj2->Extra.RegionContext)) { RegionObj2->Extra.RegionContext = RegionContext; } } } /* We have everything we need, we can invoke the address space handler */ Handler = HandlerDesc->AddressSpace.Handler; Address = (RegionObj->Region.Address + RegionOffset); /* * Special handling for GenericSerialBus and GeneralPurposeIo: * There are three extra parameters that must be passed to the * handler via the context: * 1) Connection buffer, a resource template from Connection() op * 2) Length of the above buffer * 3) Actual access length from the AccessAs() op * * In addition, for GeneralPurposeIo, the Address and BitWidth fields * are defined as follows: * 1) Address is the pin number index of the field (bit offset from * the previous Connection) * 2) BitWidth is the actual bit length of the field (number of pins) */ if ((RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS) && Context && FieldObj) { /* Get the Connection (ResourceTemplate) buffer */ Context->Connection = FieldObj->Field.ResourceBuffer; Context->Length = FieldObj->Field.ResourceLength; Context->AccessLength = FieldObj->Field.AccessLength; } if ((RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO) && Context && FieldObj) { /* Get the Connection (ResourceTemplate) buffer */ Context->Connection = FieldObj->Field.ResourceBuffer; Context->Length = FieldObj->Field.ResourceLength; Context->AccessLength = FieldObj->Field.AccessLength; Address = FieldObj->Field.PinNumberIndex; BitWidth = FieldObj->Field.BitLength; } ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Handler %p (@%p) Address %8.8X%8.8X [%s]\n", &RegionObj->Region.Handler->AddressSpace, Handler, ACPI_FORMAT_UINT64 (Address), AcpiUtGetRegionName (RegionObj->Region.SpaceId))); if (!(HandlerDesc->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { /* * For handlers other than the default (supplied) handlers, we must * exit the interpreter because the handler *might* block -- we don't * know what it will do, so we can't hold the lock on the intepreter. */ AcpiExExitInterpreter(); } /* Call the handler */ Status = Handler (Function, Address, BitWidth, Value, Context, RegionObj2->Extra.RegionContext); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "Returned by Handler for [%s]", AcpiUtGetRegionName (RegionObj->Region.SpaceId))); } if (!(HandlerDesc->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { /* * We just returned from a non-default handler, we must re-enter the * interpreter */ AcpiExEnterInterpreter (); } return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiInstallAddressSpaceHandler ( ACPI_HANDLE Device, ACPI_ADR_SPACE_TYPE SpaceId, ACPI_ADR_SPACE_HANDLER Handler, ACPI_ADR_SPACE_SETUP Setup, void *Context) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_OBJECT_TYPE Type; UINT16 Flags = 0; ACPI_FUNCTION_TRACE ("AcpiInstallAddressSpaceHandler"); /* Parameter validation */ if (!Device) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Convert and validate the device handle */ Node = AcpiNsMapHandleToNode (Device); if (!Node) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } /* * This registration is valid for only the types below * and the root. This is where the default handlers * get placed. */ if ((Node->Type != ACPI_TYPE_DEVICE) && (Node->Type != ACPI_TYPE_PROCESSOR) && (Node->Type != ACPI_TYPE_THERMAL) && (Node != AcpiGbl_RootNode)) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } if (Handler == ACPI_DEFAULT_HANDLER) { Flags = ACPI_ADDR_HANDLER_DEFAULT_INSTALLED; switch (SpaceId) { case ACPI_ADR_SPACE_SYSTEM_MEMORY: Handler = AcpiExSystemMemorySpaceHandler; Setup = AcpiEvSystemMemoryRegionSetup; break; case ACPI_ADR_SPACE_SYSTEM_IO: Handler = AcpiExSystemIoSpaceHandler; Setup = AcpiEvIoSpaceRegionSetup; break; case ACPI_ADR_SPACE_PCI_CONFIG: Handler = AcpiExPciConfigSpaceHandler; Setup = AcpiEvPciConfigRegionSetup; break; case ACPI_ADR_SPACE_CMOS: Handler = AcpiExCmosSpaceHandler; Setup = AcpiEvCmosRegionSetup; break; case ACPI_ADR_SPACE_PCI_BAR_TARGET: Handler = AcpiExPciBarSpaceHandler; Setup = AcpiEvPciBarRegionSetup; break; case ACPI_ADR_SPACE_DATA_TABLE: Handler = AcpiExDataTableSpaceHandler; Setup = NULL; break; default: Status = AE_NOT_EXIST; goto UnlockAndExit; } } /* * If the caller hasn't specified a setup routine, use the default */ if (!Setup) { Setup = AcpiEvDefaultRegionSetup; } /* * Check for an existing internal object */ ObjDesc = AcpiNsGetAttachedObject (Node); if (ObjDesc) { /* * The object exists. * Make sure the handler is not already installed. */ /* check the address handler the user requested */ HandlerObj = ObjDesc->Device.AddrHandler; while (HandlerObj) { /* * We have an Address handler, see if user requested this * address space. */ if(HandlerObj->AddrHandler.SpaceId == SpaceId) { Status = AE_ALREADY_EXISTS; goto UnlockAndExit; } /* * Move through the linked list of handlers */ HandlerObj = HandlerObj->AddrHandler.Next; } } else { ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Creating object on Device %p while installing handler\n", Node)); /* ObjDesc does not exist, create one */ if (Node->Type == ACPI_TYPE_ANY) { Type = ACPI_TYPE_DEVICE; } else { Type = Node->Type; } ObjDesc = AcpiUtCreateInternalObject (Type); if (!ObjDesc) { Status = AE_NO_MEMORY; goto UnlockAndExit; } /* Init new descriptor */ ObjDesc->Common.Type = (UINT8) Type; /* Attach the new object to the Node */ Status = AcpiNsAttachObject (Node, ObjDesc, Type); if (ACPI_FAILURE (Status)) { AcpiUtRemoveReference (ObjDesc); goto UnlockAndExit; } } ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Installing address handler for region %s(%X) on Device %4.4s %p(%p)\n", AcpiUtGetRegionName (SpaceId), SpaceId, Node->Name.Ascii, Node, ObjDesc)); /* * Now we can install the handler * * At this point we know that there is no existing handler. * So, we just allocate the object for the handler and link it * into the list. */ HandlerObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_ADDRESS_HANDLER); if (!HandlerObj) { Status = AE_NO_MEMORY; goto UnlockAndExit; } HandlerObj->AddrHandler.SpaceId = (UINT8) SpaceId; HandlerObj->AddrHandler.Hflags = Flags; HandlerObj->AddrHandler.Next = ObjDesc->Device.AddrHandler; HandlerObj->AddrHandler.RegionList = NULL; HandlerObj->AddrHandler.Node = Node; HandlerObj->AddrHandler.Handler = Handler; HandlerObj->AddrHandler.Context = Context; HandlerObj->AddrHandler.Setup = Setup; /* * Now walk the namespace finding all of the regions this * handler will manage. * * We start at the device and search the branch toward * the leaf nodes until either the leaf is encountered or * a device is detected that has an address handler of the * same type. * * In either case we back up and search down the remainder * of the branch */ Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, Device, ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, AcpiEvAddrHandlerHelper, HandlerObj, NULL); /* * Place this handler 1st on the list */ HandlerObj->Common.ReferenceCount = (UINT16) (HandlerObj->Common.ReferenceCount + ObjDesc->Common.ReferenceCount - 1); ObjDesc->Device.AddrHandler = HandlerObj; UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return_ACPI_STATUS (Status); }
static ACPI_STATUS AcpiEvInstallHandler ( ACPI_HANDLE ObjHandle, UINT32 Level, void *Context, void **ReturnValue) { ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *NextHandlerObj; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_FUNCTION_NAME (EvInstallHandler); HandlerObj = (ACPI_OPERAND_OBJECT *) Context; /* Parameter validation */ if (!HandlerObj) { return (AE_OK); } /* Convert and validate the device handle */ Node = AcpiNsValidateHandle (ObjHandle); if (!Node) { return (AE_BAD_PARAMETER); } /* * We only care about regions and objects that are allowed to have * address space handlers */ if ((Node->Type != ACPI_TYPE_DEVICE) && (Node->Type != ACPI_TYPE_REGION) && (Node != AcpiGbl_RootNode)) { return (AE_OK); } /* Check for an existing internal object */ ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { /* No object, just exit */ return (AE_OK); } /* Devices are handled different than regions */ if (ObjDesc->Common.Type == ACPI_TYPE_DEVICE) { /* Check if this Device already has a handler for this address space */ NextHandlerObj = AcpiEvFindRegionHandler ( HandlerObj->AddressSpace.SpaceId, ObjDesc->CommonNotify.Handler); if (NextHandlerObj) { /* Found a handler, is it for the same address space? */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Found handler for region [%s] in device %p(%p) handler %p\n", AcpiUtGetRegionName (HandlerObj->AddressSpace.SpaceId), ObjDesc, NextHandlerObj, HandlerObj)); /* * Since the object we found it on was a device, then it means * that someone has already installed a handler for the branch * of the namespace from this device on. Just bail out telling * the walk routine to not traverse this branch. This preserves * the scoping rule for handlers. */ return (AE_CTRL_DEPTH); } /* * As long as the device didn't have a handler for this space we * don't care about it. We just ignore it and proceed. */ return (AE_OK); } /* Object is a Region */ if (ObjDesc->Region.SpaceId != HandlerObj->AddressSpace.SpaceId) { /* This region is for a different address space, just ignore it */ return (AE_OK); } /* * Now we have a region and it is for the handler's address space type. * * First disconnect region for any previous handler (if any) */ AcpiEvDetachRegion (ObjDesc, FALSE); /* Connect the region to the new handler */ Status = AcpiEvAttachRegion (HandlerObj, ObjDesc, FALSE); return (Status); }
ACPI_STATUS AcpiHwRead ( UINT32 *Value, ACPI_GENERIC_ADDRESS *Reg) { UINT64 Address; UINT8 AccessWidth; UINT32 BitWidth; UINT8 BitOffset; UINT64 Value64; UINT32 Value32; UINT8 Index; ACPI_STATUS Status; ACPI_FUNCTION_NAME (HwRead); /* Validate contents of the GAS register */ Status = AcpiHwValidateRegister (Reg, 32, &Address); if (ACPI_FAILURE (Status)) { return (Status); } /* * Initialize entire 32-bit return value to zero, convert AccessWidth * into number of bits based */ *Value = 0; AccessWidth = Reg->AccessWidth ? Reg->AccessWidth : 1; AccessWidth = 1 << (AccessWidth + 2); BitWidth = ACPI_ROUND_UP (Reg->BitOffset + Reg->BitWidth, AccessWidth); BitOffset = Reg->BitOffset; /* * Two address spaces supported: Memory or IO. PCI_Config is * not supported here because the GAS structure is insufficient */ Index = 0; while (BitWidth) { if (BitOffset > AccessWidth) { Value32 = 0; BitOffset -= AccessWidth; } else { if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY) { Status = AcpiOsReadMemory ((ACPI_PHYSICAL_ADDRESS) Address + Index * ACPI_DIV_8 (AccessWidth), &Value64, AccessWidth); Value32 = (UINT32) Value64; } else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ { Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address + Index * ACPI_DIV_8 (AccessWidth), &Value32, AccessWidth); } if (BitOffset) { Value32 &= ACPI_MASK_BITS_BELOW (BitOffset); BitOffset = 0; } if (BitWidth < AccessWidth) { Value32 &= ACPI_MASK_BITS_ABOVE (BitWidth); } } ACPI_SET_BITS (Value, Index * AccessWidth, ((1 << AccessWidth) - 1), Value32); BitWidth -= BitWidth > AccessWidth ? AccessWidth : BitWidth; Index++; } ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Read: %8.8X width %2d from %8.8X%8.8X (%s)\n", *Value, AccessWidth, ACPI_FORMAT_UINT64 (Address), AcpiUtGetRegionName (Reg->SpaceId))); return (Status); }
ACPI_STATUS AcpiHwWrite ( UINT32 Value, ACPI_GENERIC_ADDRESS *Reg) { UINT64 Address; UINT8 AccessWidth; UINT32 BitWidth; UINT8 BitOffset; UINT64 Value64; UINT32 NewValue32, OldValue32; UINT8 Index; ACPI_STATUS Status; ACPI_FUNCTION_NAME (HwWrite); /* Validate contents of the GAS register */ Status = AcpiHwValidateRegister (Reg, 32, &Address); if (ACPI_FAILURE (Status)) { return (Status); } /* Convert AccessWidth into number of bits based */ AccessWidth = Reg->AccessWidth ? Reg->AccessWidth : 1; AccessWidth = 1 << (AccessWidth + 2); BitWidth = ACPI_ROUND_UP (Reg->BitOffset + Reg->BitWidth, AccessWidth); BitOffset = Reg->BitOffset; /* * Two address spaces supported: Memory or IO. PCI_Config is * not supported here because the GAS structure is insufficient */ Index = 0; while (BitWidth) { NewValue32 = ACPI_GET_BITS (&Value, (Index * AccessWidth), ((1 << AccessWidth) - 1)); if (BitOffset > AccessWidth) { BitOffset -= AccessWidth; } else { if (BitOffset) { NewValue32 &= ACPI_MASK_BITS_BELOW (BitOffset); } if (BitWidth < AccessWidth) { NewValue32 &= ACPI_MASK_BITS_ABOVE (BitWidth); } if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY) { if (BitOffset || BitWidth < AccessWidth) { /* * Read old values in order not to modify the bits that * are beyond the register BitWidth/BitOffset setting. */ Status = AcpiOsReadMemory ((ACPI_PHYSICAL_ADDRESS) Address + Index * ACPI_DIV_8 (AccessWidth), &Value64, AccessWidth); OldValue32 = (UINT32) Value64; if (BitOffset) { OldValue32 &= ACPI_MASK_BITS_ABOVE (BitOffset + 1); BitOffset = 0; } if (BitWidth < AccessWidth) { OldValue32 &= ACPI_MASK_BITS_BELOW (BitWidth - 1); } NewValue32 |= OldValue32; } Value64 = (UINT64) NewValue32; Status = AcpiOsWriteMemory ((ACPI_PHYSICAL_ADDRESS) Address + Index * ACPI_DIV_8 (AccessWidth), Value64, AccessWidth); } else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ { if (BitOffset || BitWidth < AccessWidth) { /* * Read old values in order not to modify the bits that * are beyond the register BitWidth/BitOffset setting. */ Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address + Index * ACPI_DIV_8 (AccessWidth), &OldValue32, AccessWidth); if (BitOffset) { OldValue32 &= ACPI_MASK_BITS_ABOVE (BitOffset + 1); BitOffset = 0; } if (BitWidth < AccessWidth) { OldValue32 &= ACPI_MASK_BITS_BELOW (BitWidth - 1); } NewValue32 |= OldValue32; } Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address + Index * ACPI_DIV_8 (AccessWidth), NewValue32, AccessWidth); } } BitWidth -= BitWidth > AccessWidth ? AccessWidth : BitWidth; Index++; } ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Wrote: %8.8X width %2d to %8.8X%8.8X (%s)\n", Value, AccessWidth, ACPI_FORMAT_UINT64 (Address), AcpiUtGetRegionName (Reg->SpaceId))); return (Status); }
ACPI_STATUS AcpiEvAddrHandlerHelper ( ACPI_HANDLE ObjHandle, UINT32 Level, void *Context, void **ReturnValue) { ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *TmpObj; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_FUNCTION_NAME ("EvAddrHandlerHelper"); HandlerObj = (ACPI_OPERAND_OBJECT *) Context; /* Parameter validation */ if (!HandlerObj) { return (AE_OK); } /* Convert and validate the device handle */ Node = AcpiNsMapHandleToNode (ObjHandle); if (!Node) { return (AE_BAD_PARAMETER); } /* * We only care about regions.and objects * that can have address handlers */ if ((Node->Type != ACPI_TYPE_DEVICE) && (Node->Type != ACPI_TYPE_REGION) && (Node != AcpiGbl_RootNode)) { return (AE_OK); } /* Check for an existing internal object */ ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { /* * The object DNE, we don't care about it */ return (AE_OK); } /* * Devices are handled different than regions */ if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_DEVICE) { /* * See if this guy has any handlers */ TmpObj = ObjDesc->Device.AddrHandler; while (TmpObj) { /* * Now let's see if it's for the same address space. */ if (TmpObj->AddrHandler.SpaceId == HandlerObj->AddrHandler.SpaceId) { /* * It's for the same address space */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Found handler for region [%s] in device %p(%p) handler %p\n", AcpiUtGetRegionName (HandlerObj->AddrHandler.SpaceId), ObjDesc, TmpObj, HandlerObj)); /* * Since the object we found it on was a device, then it * means that someone has already installed a handler for * the branch of the namespace from this device on. Just * bail out telling the walk routine to not traverse this * branch. This preserves the scoping rule for handlers. */ return (AE_CTRL_DEPTH); } /* * Move through the linked list of handlers */ TmpObj = TmpObj->AddrHandler.Next; } /* * As long as the device didn't have a handler for this * space we don't care about it. We just ignore it and * proceed. */ return (AE_OK); } /* * Only here if it was a region */ if (ObjDesc->Region.SpaceId != HandlerObj->AddrHandler.SpaceId) { /* * This region is for a different address space * ignore it */ return (AE_OK); } /* * Now we have a region and it is for the handler's address * space type. * * First disconnect region for any previous handler (if any) */ AcpiEvDetachRegion (ObjDesc, FALSE); /* * Then connect the region to the new handler */ Status = AcpiEvAttachRegion (HandlerObj, ObjDesc, FALSE); return (Status); }
void AcpiEvDetachRegion( ACPI_OPERAND_OBJECT *RegionObj, BOOLEAN AcpiNsIsLocked) { ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT **LastObjPtr; ACPI_ADR_SPACE_SETUP RegionSetup; void *RegionContext; ACPI_OPERAND_OBJECT *RegionObj2; ACPI_STATUS Status; ACPI_FUNCTION_TRACE ("EvDetachRegion"); RegionObj2 = AcpiNsGetSecondaryObject (RegionObj); if (!RegionObj2) { return_VOID; } RegionContext = RegionObj2->Extra.RegionContext; /* * Get the address handler from the region object */ HandlerObj = RegionObj->Region.AddrHandler; if (!HandlerObj) { /* * This region has no handler, all done */ return_VOID; } /* * Find this region in the handler's list */ ObjDesc = HandlerObj->AddrHandler.RegionList; LastObjPtr = &HandlerObj->AddrHandler.RegionList; while (ObjDesc) { /* * See if this is the one */ if (ObjDesc == RegionObj) { ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Removing Region %p from address handler %p\n", RegionObj, HandlerObj)); /* * This is it, remove it from the handler's list */ *LastObjPtr = ObjDesc->Region.Next; ObjDesc->Region.Next = NULL; /* Must clear field */ if (AcpiNsIsLocked) { Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_VOID; } } /* * Now stop region accesses by executing the _REG method */ Status = AcpiEvExecuteRegMethod (RegionObj, 0); if (ACPI_FAILURE (Status)) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s from region _REG, [%s]\n", AcpiFormatException (Status), AcpiUtGetRegionName (RegionObj->Region.SpaceId))); } if (AcpiNsIsLocked) { Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_VOID; } } /* * Call the setup handler with the deactivate notification */ RegionSetup = HandlerObj->AddrHandler.Setup; Status = RegionSetup (RegionObj, ACPI_REGION_DEACTIVATE, HandlerObj->AddrHandler.Context, &RegionContext); /* * Init routine may fail, Just ignore errors */ if (ACPI_FAILURE (Status)) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s from region init, [%s]\n", AcpiFormatException (Status), AcpiUtGetRegionName (RegionObj->Region.SpaceId))); } RegionObj->Region.Flags &= ~(AOPOBJ_SETUP_COMPLETE); /* * Remove handler reference in the region * * NOTE: this doesn't mean that the region goes away * The region is just inaccessible as indicated to * the _REG method * * If the region is on the handler's list * this better be the region's handler */ RegionObj->Region.AddrHandler = NULL; return_VOID; } /* found the right handler */ /* * Move through the linked list of handlers */ LastObjPtr = &ObjDesc->Region.Next; ObjDesc = ObjDesc->Region.Next; } /* * If we get here, the region was not in the handler's region list */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Cannot remove region %p from address handler %p\n", RegionObj, HandlerObj)); return_VOID; }
ACPI_STATUS AcpiEvAddressSpaceDispatch ( ACPI_OPERAND_OBJECT *RegionObj, UINT32 Function, ACPI_PHYSICAL_ADDRESS Address, UINT32 BitWidth, void *Value) { ACPI_STATUS Status; ACPI_STATUS Status2; ACPI_ADR_SPACE_HANDLER Handler; ACPI_ADR_SPACE_SETUP RegionSetup; ACPI_OPERAND_OBJECT *HandlerDesc; ACPI_OPERAND_OBJECT *RegionObj2; void *RegionContext = NULL; ACPI_FUNCTION_TRACE ("EvAddressSpaceDispatch"); RegionObj2 = AcpiNsGetSecondaryObject (RegionObj); if (!RegionObj2) { return_ACPI_STATUS (AE_NOT_EXIST); } /* * Ensure that there is a handler associated with this region */ HandlerDesc = RegionObj->Region.AddrHandler; if (!HandlerDesc) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "no handler for region(%p) [%s]\n", RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId))); return_ACPI_STATUS (AE_NOT_EXIST); } /* * It may be the case that the region has never been initialized * Some types of regions require special init code */ if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)) { /* * This region has not been initialized yet, do it */ RegionSetup = HandlerDesc->AddrHandler.Setup; if (!RegionSetup) { /* * Bad news, no init routine and not init'd */ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No init routine for region(%p) [%s]\n", RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId))); return_ACPI_STATUS (AE_UNKNOWN_STATUS); } /* * We must exit the interpreter because the region setup will potentially * execute control methods */ AcpiExExitInterpreter (); Status = RegionSetup (RegionObj, ACPI_REGION_ACTIVATE, HandlerDesc->AddrHandler.Context, &RegionContext); /* Re-enter the interpreter */ Status2 = AcpiExEnterInterpreter (); if (ACPI_FAILURE (Status2)) { return_ACPI_STATUS (Status2); } /* * Init routine may fail */ if (ACPI_FAILURE (Status)) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Region Init: %s [%s]\n", AcpiFormatException (Status), AcpiUtGetRegionName (RegionObj->Region.SpaceId))); return_ACPI_STATUS (Status); } RegionObj->Region.Flags |= AOPOBJ_SETUP_COMPLETE; /* * Save the returned context for use in all accesses to * this particular region. */ RegionObj2->Extra.RegionContext = RegionContext; } /* * We have everything we need, begin the process */ Handler = HandlerDesc->AddrHandler.Handler; ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Addrhandler %p (%p), Address %8.8X%8.8X\n", &RegionObj->Region.AddrHandler->AddrHandler, Handler, ACPI_HIDWORD (Address), ACPI_LODWORD (Address))); if (!(HandlerDesc->AddrHandler.Flags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { /* * For handlers other than the default (supplied) handlers, we must * exit the interpreter because the handler *might* block -- we don't * know what it will do, so we can't hold the lock on the intepreter. */ AcpiExExitInterpreter(); } /* * Invoke the handler. */ Status = Handler (Function, Address, BitWidth, Value, HandlerDesc->AddrHandler.Context, RegionObj2->Extra.RegionContext); if (ACPI_FAILURE (Status)) { ACPI_REPORT_ERROR (("Handler for [%s] returned %s\n", AcpiUtGetRegionName (RegionObj->Region.SpaceId), AcpiFormatException (Status))); } if (!(HandlerDesc->AddrHandler.Flags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { /* * We just returned from a non-default handler, we must re-enter the * interpreter */ Status2 = AcpiExEnterInterpreter (); if (ACPI_FAILURE (Status2)) { return_ACPI_STATUS (Status2); } } return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiEvInitializeRegion ( ACPI_OPERAND_OBJECT *RegionObj, BOOLEAN AcpiNsLocked) { ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_ADR_SPACE_TYPE SpaceId; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_NAMESPACE_NODE *MethodNode; ACPI_NAME *RegNamePtr = (ACPI_NAME *) METHOD_NAME__REG; ACPI_OPERAND_OBJECT *RegionObj2; ACPI_FUNCTION_TRACE_U32 (EvInitializeRegion, AcpiNsLocked); if (!RegionObj) { return_ACPI_STATUS (AE_BAD_PARAMETER); } if (RegionObj->Common.Flags & AOPOBJ_OBJECT_INITIALIZED) { return_ACPI_STATUS (AE_OK); } RegionObj2 = AcpiNsGetSecondaryObject (RegionObj); if (!RegionObj2) { return_ACPI_STATUS (AE_NOT_EXIST); } Node = AcpiNsGetParentNode (RegionObj->Region.Node); SpaceId = RegionObj->Region.SpaceId; /* Setup defaults */ RegionObj->Region.Handler = NULL; RegionObj2->Extra.Method_REG = NULL; RegionObj->Common.Flags &= ~(AOPOBJ_SETUP_COMPLETE); RegionObj->Common.Flags |= AOPOBJ_OBJECT_INITIALIZED; /* Find any "_REG" method associated with this region definition */ Status = AcpiNsSearchOneScope ( *RegNamePtr, Node, ACPI_TYPE_METHOD, &MethodNode); if (ACPI_SUCCESS (Status)) { /* * The _REG method is optional and there can be only one per region * definition. This will be executed when the handler is attached * or removed */ RegionObj2->Extra.Method_REG = MethodNode; } /* * The following loop depends upon the root Node having no parent * ie: AcpiGbl_RootNode->ParentEntry being set to NULL */ while (Node) { /* Check to see if a handler exists */ HandlerObj = NULL; ObjDesc = AcpiNsGetAttachedObject (Node); if (ObjDesc) { /* Can only be a handler if the object exists */ switch (Node->Type) { case ACPI_TYPE_DEVICE: HandlerObj = ObjDesc->Device.Handler; break; case ACPI_TYPE_PROCESSOR: HandlerObj = ObjDesc->Processor.Handler; break; case ACPI_TYPE_THERMAL: HandlerObj = ObjDesc->ThermalZone.Handler; break; default: /* Ignore other objects */ break; } while (HandlerObj) { /* Is this handler of the correct type? */ if (HandlerObj->AddressSpace.SpaceId == SpaceId) { /* Found correct handler */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Found handler %p for region %p in obj %p\n", HandlerObj, RegionObj, ObjDesc)); Status = AcpiEvAttachRegion (HandlerObj, RegionObj, AcpiNsLocked); /* * Tell all users that this region is usable by * running the _REG method */ if (AcpiNsLocked) { Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } Status = AcpiEvExecuteRegMethod (RegionObj, 1); if (AcpiNsLocked) { Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } return_ACPI_STATUS (AE_OK); } /* Try next handler in the list */ HandlerObj = HandlerObj->AddressSpace.Next; } } /* This node does not have the handler we need; Pop up one level */ Node = AcpiNsGetParentNode (Node); } /* If we get here, there is no handler for this region */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "No handler for RegionType %s(%X) (RegionObj %p)\n", AcpiUtGetRegionName (SpaceId), SpaceId, RegionObj)); return_ACPI_STATUS (AE_NOT_EXIST); }
ACPI_STATUS AcpiRemoveAddressSpaceHandler ( ACPI_HANDLE Device, ACPI_ADR_SPACE_TYPE SpaceId, ACPI_ADR_SPACE_HANDLER Handler) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *RegionObj; ACPI_OPERAND_OBJECT **LastObjPtr; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_FUNCTION_TRACE ("AcpiRemoveAddressSpaceHandler"); /* Parameter validation */ if (!Device) { return_ACPI_STATUS (AE_BAD_PARAMETER); } Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Convert and validate the device handle */ Node = AcpiNsMapHandleToNode (Device); if (!Node) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } /* Make sure the internal object exists */ ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { Status = AE_NOT_EXIST; goto UnlockAndExit; } /* * find the address handler the user requested */ HandlerObj = ObjDesc->Device.AddrHandler; LastObjPtr = &ObjDesc->Device.AddrHandler; while (HandlerObj) { /* * We have a handler, see if user requested this one */ if (HandlerObj->AddrHandler.SpaceId == SpaceId) { /* * Got it, first dereference this in the Regions */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Removing address handler %p(%p) for region %s on Device %p(%p)\n", HandlerObj, Handler, AcpiUtGetRegionName (SpaceId), Node, ObjDesc)); RegionObj = HandlerObj->AddrHandler.RegionList; /* Walk the handler's region list */ while (RegionObj) { /* * First disassociate the handler from the region. * * NOTE: this doesn't mean that the region goes away * The region is just inaccessible as indicated to * the _REG method */ AcpiEvDetachRegion (RegionObj, TRUE); /* * Walk the list, since we took the first region and it * was removed from the list by the dissassociate call * we just get the first item on the list again */ RegionObj = HandlerObj->AddrHandler.RegionList; } /* * Remove this Handler object from the list */ *LastObjPtr = HandlerObj->AddrHandler.Next; /* * Now we can delete the handler object */ AcpiUtRemoveReference (HandlerObj); AcpiUtRemoveReference (HandlerObj); goto UnlockAndExit; } /* * Move through the linked list of handlers */ LastObjPtr = &HandlerObj->AddrHandler.Next; HandlerObj = HandlerObj->AddrHandler.Next; } /* * The handler does not exist */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Unable to remove address handler %p for %s(%X), DevNode %p, obj %p\n", Handler, AcpiUtGetRegionName (SpaceId), SpaceId, Node, ObjDesc)); Status = AE_NOT_EXIST; UnlockAndExit: (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiNsDumpOneObject ( ACPI_HANDLE ObjHandle, UINT32 Level, void *Context, void **ReturnValue) { ACPI_WALK_INFO *Info = (ACPI_WALK_INFO *) Context; ACPI_NAMESPACE_NODE *ThisNode; ACPI_OPERAND_OBJECT *ObjDesc = NULL; ACPI_OBJECT_TYPE ObjType; ACPI_OBJECT_TYPE Type; UINT32 BytesToDump; UINT32 DbgLevel; UINT32 i; ACPI_FUNCTION_NAME (NsDumpOneObject); /* Is output enabled? */ if (!(AcpiDbgLevel & Info->DebugLevel)) { return (AE_OK); } if (!ObjHandle) { ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Null object handle\n")); return (AE_OK); } ThisNode = AcpiNsValidateHandle (ObjHandle); if (!ThisNode) { ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Invalid object handle %p\n", ObjHandle)); return (AE_OK); } Type = ThisNode->Type; /* Check if the owner matches */ if ((Info->OwnerId != ACPI_OWNER_ID_MAX) && (Info->OwnerId != ThisNode->OwnerId)) { return (AE_OK); } if (!(Info->DisplayType & ACPI_DISPLAY_SHORT)) { /* Indent the object according to the level */ AcpiOsPrintf ("%2d%*s", (UINT32) Level - 1, (int) Level * 2, " "); /* Check the node type and name */ if (Type > ACPI_TYPE_LOCAL_MAX) { ACPI_WARNING ((AE_INFO, "Invalid ACPI Object Type 0x%08X", Type)); } AcpiOsPrintf ("%4.4s", AcpiUtGetNodeName (ThisNode)); } /* Now we can print out the pertinent information */ AcpiOsPrintf (" %-12s %p %2.2X ", AcpiUtGetTypeName (Type), ThisNode, ThisNode->OwnerId); DbgLevel = AcpiDbgLevel; AcpiDbgLevel = 0; ObjDesc = AcpiNsGetAttachedObject (ThisNode); AcpiDbgLevel = DbgLevel; /* Temp nodes are those nodes created by a control method */ if (ThisNode->Flags & ANOBJ_TEMPORARY) { AcpiOsPrintf ("(T) "); } switch (Info->DisplayType & ACPI_DISPLAY_MASK) { case ACPI_DISPLAY_SUMMARY: if (!ObjDesc) { /* No attached object. Some types should always have an object */ switch (Type) { case ACPI_TYPE_INTEGER: case ACPI_TYPE_PACKAGE: case ACPI_TYPE_BUFFER: case ACPI_TYPE_STRING: case ACPI_TYPE_METHOD: AcpiOsPrintf ("<No attached object>"); break; default: break; } AcpiOsPrintf ("\n"); return (AE_OK); } switch (Type) { case ACPI_TYPE_PROCESSOR: AcpiOsPrintf ("ID %02X Len %02X Addr %8.8X%8.8X\n", ObjDesc->Processor.ProcId, ObjDesc->Processor.Length, ACPI_FORMAT_UINT64 (ObjDesc->Processor.Address)); break; case ACPI_TYPE_DEVICE: AcpiOsPrintf ("Notify Object: %p\n", ObjDesc); break; case ACPI_TYPE_METHOD: AcpiOsPrintf ("Args %X Len %.4X Aml %p\n", (UINT32) ObjDesc->Method.ParamCount, ObjDesc->Method.AmlLength, ObjDesc->Method.AmlStart); break; case ACPI_TYPE_INTEGER: AcpiOsPrintf ("= %8.8X%8.8X\n", ACPI_FORMAT_UINT64 (ObjDesc->Integer.Value)); break; case ACPI_TYPE_PACKAGE: if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) { AcpiOsPrintf ("Elements %.2X\n", ObjDesc->Package.Count); } else { AcpiOsPrintf ("[Length not yet evaluated]\n"); } break; case ACPI_TYPE_BUFFER: if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID) { AcpiOsPrintf ("Len %.2X", ObjDesc->Buffer.Length); /* Dump some of the buffer */ if (ObjDesc->Buffer.Length > 0) { AcpiOsPrintf (" ="); for (i = 0; (i < ObjDesc->Buffer.Length && i < 12); i++) { AcpiOsPrintf (" %.2hX", ObjDesc->Buffer.Pointer[i]); } } AcpiOsPrintf ("\n"); } else { AcpiOsPrintf ("[Length not yet evaluated]\n"); } break; case ACPI_TYPE_STRING: AcpiOsPrintf ("Len %.2X ", ObjDesc->String.Length); AcpiUtPrintString (ObjDesc->String.Pointer, 80); AcpiOsPrintf ("\n"); break; case ACPI_TYPE_REGION: AcpiOsPrintf ("[%s]", AcpiUtGetRegionName (ObjDesc->Region.SpaceId)); if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID) { AcpiOsPrintf (" Addr %8.8X%8.8X Len %.4X\n", ACPI_FORMAT_UINT64 (ObjDesc->Region.Address), ObjDesc->Region.Length); } else { AcpiOsPrintf (" [Address/Length not yet evaluated]\n"); } break; case ACPI_TYPE_LOCAL_REFERENCE: AcpiOsPrintf ("[%s]\n", AcpiUtGetReferenceName (ObjDesc)); break; case ACPI_TYPE_BUFFER_FIELD: if (ObjDesc->BufferField.BufferObj && ObjDesc->BufferField.BufferObj->Buffer.Node) { AcpiOsPrintf ("Buf [%4.4s]", AcpiUtGetNodeName ( ObjDesc->BufferField.BufferObj->Buffer.Node)); } break; case ACPI_TYPE_LOCAL_REGION_FIELD: AcpiOsPrintf ("Rgn [%4.4s]", AcpiUtGetNodeName ( ObjDesc->CommonField.RegionObj->Region.Node)); break; case ACPI_TYPE_LOCAL_BANK_FIELD: AcpiOsPrintf ("Rgn [%4.4s] Bnk [%4.4s]", AcpiUtGetNodeName ( ObjDesc->CommonField.RegionObj->Region.Node), AcpiUtGetNodeName ( ObjDesc->BankField.BankObj->CommonField.Node)); break; case ACPI_TYPE_LOCAL_INDEX_FIELD: AcpiOsPrintf ("Idx [%4.4s] Dat [%4.4s]", AcpiUtGetNodeName ( ObjDesc->IndexField.IndexObj->CommonField.Node), AcpiUtGetNodeName ( ObjDesc->IndexField.DataObj->CommonField.Node)); break; case ACPI_TYPE_LOCAL_ALIAS: case ACPI_TYPE_LOCAL_METHOD_ALIAS: AcpiOsPrintf ("Target %4.4s (%p)\n", AcpiUtGetNodeName (ObjDesc), ObjDesc); break; default: AcpiOsPrintf ("Object %p\n", ObjDesc); break; } /* Common field handling */ switch (Type) { case ACPI_TYPE_BUFFER_FIELD: case ACPI_TYPE_LOCAL_REGION_FIELD: case ACPI_TYPE_LOCAL_BANK_FIELD: case ACPI_TYPE_LOCAL_INDEX_FIELD: AcpiOsPrintf (" Off %.3X Len %.2X Acc %.2hd\n", (ObjDesc->CommonField.BaseByteOffset * 8) + ObjDesc->CommonField.StartFieldBitOffset, ObjDesc->CommonField.BitLength, ObjDesc->CommonField.AccessByteWidth); break; default: break; } break; case ACPI_DISPLAY_OBJECTS: AcpiOsPrintf ("O:%p", ObjDesc); if (!ObjDesc) { /* No attached object, we are done */ AcpiOsPrintf ("\n"); return (AE_OK); } AcpiOsPrintf ("(R%u)", ObjDesc->Common.ReferenceCount); switch (Type) { case ACPI_TYPE_METHOD: /* Name is a Method and its AML offset/length are set */ AcpiOsPrintf (" M:%p-%X\n", ObjDesc->Method.AmlStart, ObjDesc->Method.AmlLength); break; case ACPI_TYPE_INTEGER: AcpiOsPrintf (" I:%8.8X8.8%X\n", ACPI_FORMAT_UINT64 (ObjDesc->Integer.Value)); break; case ACPI_TYPE_STRING: AcpiOsPrintf (" S:%p-%X\n", ObjDesc->String.Pointer, ObjDesc->String.Length); break; case ACPI_TYPE_BUFFER: AcpiOsPrintf (" B:%p-%X\n", ObjDesc->Buffer.Pointer, ObjDesc->Buffer.Length); break; default: AcpiOsPrintf ("\n"); break; } break; default: AcpiOsPrintf ("\n"); break; } /* If debug turned off, done */ if (!(AcpiDbgLevel & ACPI_LV_VALUES)) { return (AE_OK); } /* If there is an attached object, display it */ DbgLevel = AcpiDbgLevel; AcpiDbgLevel = 0; ObjDesc = AcpiNsGetAttachedObject (ThisNode); AcpiDbgLevel = DbgLevel; /* Dump attached objects */ while (ObjDesc) { ObjType = ACPI_TYPE_INVALID; AcpiOsPrintf ("Attached Object %p: ", ObjDesc); /* Decode the type of attached object and dump the contents */ switch (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc)) { case ACPI_DESC_TYPE_NAMED: AcpiOsPrintf ("(Ptr to Node)\n"); BytesToDump = sizeof (ACPI_NAMESPACE_NODE); ACPI_DUMP_BUFFER (ObjDesc, BytesToDump); break; case ACPI_DESC_TYPE_OPERAND: ObjType = ObjDesc->Common.Type; if (ObjType > ACPI_TYPE_LOCAL_MAX) { AcpiOsPrintf ( "(Pointer to ACPI Object type %.2X [UNKNOWN])\n", ObjType); BytesToDump = 32; } else { AcpiOsPrintf ( "(Pointer to ACPI Object type %.2X [%s])\n", ObjType, AcpiUtGetTypeName (ObjType)); BytesToDump = sizeof (ACPI_OPERAND_OBJECT); } ACPI_DUMP_BUFFER (ObjDesc, BytesToDump); break; default: break; } /* If value is NOT an internal object, we are done */ if (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) != ACPI_DESC_TYPE_OPERAND) { goto Cleanup; } /* Valid object, get the pointer to next level, if any */ switch (ObjType) { case ACPI_TYPE_BUFFER: case ACPI_TYPE_STRING: /* * NOTE: takes advantage of common fields between string/buffer */ BytesToDump = ObjDesc->String.Length; ObjDesc = (void *) ObjDesc->String.Pointer; AcpiOsPrintf ("(Buffer/String pointer %p length %X)\n", ObjDesc, BytesToDump); ACPI_DUMP_BUFFER (ObjDesc, BytesToDump); goto Cleanup; case ACPI_TYPE_BUFFER_FIELD: ObjDesc = (ACPI_OPERAND_OBJECT *) ObjDesc->BufferField.BufferObj; break; case ACPI_TYPE_PACKAGE: ObjDesc = (void *) ObjDesc->Package.Elements; break; case ACPI_TYPE_METHOD: ObjDesc = (void *) ObjDesc->Method.AmlStart; break; case ACPI_TYPE_LOCAL_REGION_FIELD: ObjDesc = (void *) ObjDesc->Field.RegionObj; break; case ACPI_TYPE_LOCAL_BANK_FIELD: ObjDesc = (void *) ObjDesc->BankField.RegionObj; break; case ACPI_TYPE_LOCAL_INDEX_FIELD: ObjDesc = (void *) ObjDesc->IndexField.IndexObj; break; default: goto Cleanup; } ObjType = ACPI_TYPE_INVALID; /* Terminate loop after next pass */ } Cleanup: AcpiOsPrintf ("\n"); return (AE_OK); }
ACPI_STATUS AeInstallHandlers (void) { ACPI_STATUS Status; UINT32 i; ACPI_HANDLE Handle; ACPI_FUNCTION_ENTRY (); Status = AcpiInstallTableHandler (AeTableHandler, NULL); if (ACPI_FAILURE (Status)) { printf ("Could not install table handler, %s\n", AcpiFormatException (Status)); } Status = AcpiInstallExceptionHandler (AeExceptionHandler); if (ACPI_FAILURE (Status)) { printf ("Could not install exception handler, %s\n", AcpiFormatException (Status)); } /* Install global notify handler */ Status = AcpiInstallNotifyHandler (ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, AeNotifyHandler, NULL); if (ACPI_FAILURE (Status)) { printf ("Could not install a global notify handler, %s\n", AcpiFormatException (Status)); } Status = AcpiInstallNotifyHandler (ACPI_ROOT_OBJECT, ACPI_DEVICE_NOTIFY, AeDeviceNotifyHandler, NULL); if (ACPI_FAILURE (Status)) { printf ("Could not install a global notify handler, %s\n", AcpiFormatException (Status)); } Status = AcpiGetHandle (NULL, "\\_SB", &Handle); if (ACPI_SUCCESS (Status)) { Status = AcpiInstallNotifyHandler (Handle, ACPI_SYSTEM_NOTIFY, AeNotifyHandler, NULL); if (ACPI_FAILURE (Status)) { printf ("Could not install a notify handler, %s\n", AcpiFormatException (Status)); } Status = AcpiRemoveNotifyHandler (Handle, ACPI_SYSTEM_NOTIFY, AeNotifyHandler); if (ACPI_FAILURE (Status)) { printf ("Could not remove a notify handler, %s\n", AcpiFormatException (Status)); } Status = AcpiInstallNotifyHandler (Handle, ACPI_ALL_NOTIFY, AeNotifyHandler, NULL); Status = AcpiRemoveNotifyHandler (Handle, ACPI_ALL_NOTIFY, AeNotifyHandler); Status = AcpiInstallNotifyHandler (Handle, ACPI_ALL_NOTIFY, AeNotifyHandler, NULL); if (ACPI_FAILURE (Status)) { printf ("Could not install a notify handler, %s\n", AcpiFormatException (Status)); } Status = AcpiAttachData (Handle, AeAttachedDataHandler, Handle); Status = AcpiDetachData (Handle, AeAttachedDataHandler); Status = AcpiAttachData (Handle, AeAttachedDataHandler, Handle); } else { printf ("No _SB_ found, %s\n", AcpiFormatException (Status)); } /* Set a handler for all supported operation regions */ for (i = 0; i < AEXEC_NUM_REGIONS; i++) { Status = AcpiRemoveAddressSpaceHandler (AcpiGbl_RootNode, SpaceId[i], AeRegionHandler); /* Install handler at the root object. * TBD: all default handlers should be installed here! */ Status = AcpiInstallAddressSpaceHandler (AcpiGbl_RootNode, SpaceId[i], AeRegionHandler, AeRegionInit, NULL); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "Could not install an OpRegion handler for %s space(%u)", AcpiUtGetRegionName((UINT8) SpaceId[i]), SpaceId[i])); return (Status); } } /* * Initialize the global Region Handler space * MCW 3/23/00 */ AeRegions.NumberOfRegions = 0; AeRegions.RegionList = NULL; return Status; }
ACPI_STATUS AcpiEvInstallSpaceHandler ( ACPI_NAMESPACE_NODE *Node, ACPI_ADR_SPACE_TYPE SpaceId, ACPI_ADR_SPACE_HANDLER Handler, ACPI_ADR_SPACE_SETUP Setup, void *Context) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_STATUS Status = AE_OK; ACPI_OBJECT_TYPE Type; UINT8 Flags = 0; ACPI_FUNCTION_TRACE (EvInstallSpaceHandler); /* * This registration is valid for only the types below and the root. * The root node is where the default handlers get installed. */ if ((Node->Type != ACPI_TYPE_DEVICE) && (Node->Type != ACPI_TYPE_PROCESSOR) && (Node->Type != ACPI_TYPE_THERMAL) && (Node != AcpiGbl_RootNode)) { Status = AE_BAD_PARAMETER; goto UnlockAndExit; } if (Handler == ACPI_DEFAULT_HANDLER) { Flags = ACPI_ADDR_HANDLER_DEFAULT_INSTALLED; switch (SpaceId) { case ACPI_ADR_SPACE_SYSTEM_MEMORY: Handler = AcpiExSystemMemorySpaceHandler; Setup = AcpiEvSystemMemoryRegionSetup; break; case ACPI_ADR_SPACE_SYSTEM_IO: Handler = AcpiExSystemIoSpaceHandler; Setup = AcpiEvIoSpaceRegionSetup; break; case ACPI_ADR_SPACE_PCI_CONFIG: Handler = AcpiExPciConfigSpaceHandler; Setup = AcpiEvPciConfigRegionSetup; break; case ACPI_ADR_SPACE_CMOS: Handler = AcpiExCmosSpaceHandler; Setup = AcpiEvCmosRegionSetup; break; case ACPI_ADR_SPACE_PCI_BAR_TARGET: Handler = AcpiExPciBarSpaceHandler; Setup = AcpiEvPciBarRegionSetup; break; case ACPI_ADR_SPACE_DATA_TABLE: Handler = AcpiExDataTableSpaceHandler; Setup = NULL; break; default: Status = AE_BAD_PARAMETER; goto UnlockAndExit; } } /* If the caller hasn't specified a setup routine, use the default */ if (!Setup) { Setup = AcpiEvDefaultRegionSetup; } /* Check for an existing internal object */ ObjDesc = AcpiNsGetAttachedObject (Node); if (ObjDesc) { /* * The attached device object already exists. Now make sure * the handler is not already installed. */ HandlerObj = AcpiEvFindRegionHandler (SpaceId, ObjDesc->CommonNotify.Handler); if (HandlerObj) { if (HandlerObj->AddressSpace.Handler == Handler) { /* * It is (relatively) OK to attempt to install the SAME * handler twice. This can easily happen with the * PCI_Config space. */ Status = AE_SAME_HANDLER; goto UnlockAndExit; } else { /* A handler is already installed */ Status = AE_ALREADY_EXISTS; } goto UnlockAndExit; } } else { ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Creating object on Device %p while installing handler\n", Node)); /* ObjDesc does not exist, create one */ if (Node->Type == ACPI_TYPE_ANY) { Type = ACPI_TYPE_DEVICE; } else { Type = Node->Type; } ObjDesc = AcpiUtCreateInternalObject (Type); if (!ObjDesc) { Status = AE_NO_MEMORY; goto UnlockAndExit; } /* Init new descriptor */ ObjDesc->Common.Type = (UINT8) Type; /* Attach the new object to the Node */ Status = AcpiNsAttachObject (Node, ObjDesc, Type); /* Remove local reference to the object */ AcpiUtRemoveReference (ObjDesc); if (ACPI_FAILURE (Status)) { goto UnlockAndExit; } } ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Installing address handler for region %s(%X) " "on Device %4.4s %p(%p)\n", AcpiUtGetRegionName (SpaceId), SpaceId, AcpiUtGetNodeName (Node), Node, ObjDesc)); /* * Install the handler * * At this point there is no existing handler. Just allocate the object * for the handler and link it into the list. */ HandlerObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_ADDRESS_HANDLER); if (!HandlerObj) { Status = AE_NO_MEMORY; goto UnlockAndExit; } /* Init handler obj */ HandlerObj->AddressSpace.SpaceId = (UINT8) SpaceId; HandlerObj->AddressSpace.HandlerFlags = Flags; HandlerObj->AddressSpace.RegionList = NULL; HandlerObj->AddressSpace.Node = Node; HandlerObj->AddressSpace.Handler = Handler; HandlerObj->AddressSpace.Context = Context; HandlerObj->AddressSpace.Setup = Setup; /* Install at head of Device.AddressSpace list */ HandlerObj->AddressSpace.Next = ObjDesc->CommonNotify.Handler; /* * The Device object is the first reference on the HandlerObj. * Each region that uses the handler adds a reference. */ ObjDesc->CommonNotify.Handler = HandlerObj; /* * Walk the namespace finding all of the regions this handler will * manage. * * Start at the device and search the branch toward the leaf nodes * until either the leaf is encountered or a device is detected that * has an address handler of the same type. * * In either case, back up and search down the remainder of the branch */ Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, Node, ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, AcpiEvInstallHandler, NULL, HandlerObj, NULL); UnlockAndExit: return_ACPI_STATUS (Status); }
ACPI_STATUS AeRegionHandler ( UINT32 Function, ACPI_PHYSICAL_ADDRESS Address, UINT32 BitWidth, UINT64 *Value, void *HandlerContext, void *RegionContext) { ACPI_OPERAND_OBJECT *RegionObject = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, RegionContext); UINT8 *Buffer = ACPI_CAST_PTR (UINT8, Value); ACPI_PHYSICAL_ADDRESS BaseAddress; ACPI_SIZE Length; BOOLEAN BufferExists; AE_REGION *RegionElement; void *BufferValue; ACPI_STATUS Status; UINT32 ByteWidth; UINT32 i; UINT8 SpaceId; ACPI_FUNCTION_NAME (AeRegionHandler); /* * If the object is not a region, simply return */ if (RegionObject->Region.Type != ACPI_TYPE_REGION) { return AE_OK; } /* * Region support can be disabled with the -r option. * We use this to support dynamically loaded tables where we pass a valid * address to the AML. */ if (AcpiGbl_DbOpt_NoRegionSupport) { BufferValue = ACPI_TO_POINTER (Address); ByteWidth = (BitWidth / 8); if (BitWidth % 8) { ByteWidth += 1; } goto DoFunction; } /* * Find the region's address space and length before searching * the linked list. */ BaseAddress = RegionObject->Region.Address; Length = (ACPI_SIZE) RegionObject->Region.Length; SpaceId = RegionObject->Region.SpaceId; ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Operation Region request on %s at 0x%X\n", AcpiUtGetRegionName (RegionObject->Region.SpaceId), (UINT32) Address)); switch (SpaceId) { case ACPI_ADR_SPACE_SYSTEM_IO: /* * For I/O space, exercise the port validation */ switch (Function & ACPI_IO_MASK) { case ACPI_READ: Status = AcpiHwReadPort (Address, (UINT32 *) Value, BitWidth); break; case ACPI_WRITE: Status = AcpiHwWritePort (Address, (UINT32) *Value, BitWidth); break; default: Status = AE_BAD_PARAMETER; break; } if (ACPI_FAILURE (Status)) { return (Status); } /* Now go ahead and simulate the hardware */ break; case ACPI_ADR_SPACE_SMBUS: Length = 0; switch (Function & ACPI_IO_MASK) { case ACPI_READ: switch (Function >> 16) { case AML_FIELD_ATTRIB_SMB_QUICK: case AML_FIELD_ATTRIB_SMB_SEND_RCV: case AML_FIELD_ATTRIB_SMB_BYTE: Length = 1; break; case AML_FIELD_ATTRIB_SMB_WORD: case AML_FIELD_ATTRIB_SMB_WORD_CALL: Length = 2; break; case AML_FIELD_ATTRIB_SMB_BLOCK: case AML_FIELD_ATTRIB_SMB_BLOCK_CALL: Length = 32; break; default: break; } break; case ACPI_WRITE: switch (Function >> 16) { case AML_FIELD_ATTRIB_SMB_QUICK: case AML_FIELD_ATTRIB_SMB_SEND_RCV: case AML_FIELD_ATTRIB_SMB_BYTE: case AML_FIELD_ATTRIB_SMB_WORD: case AML_FIELD_ATTRIB_SMB_BLOCK: Length = 0; break; case AML_FIELD_ATTRIB_SMB_WORD_CALL: Length = 2; break; case AML_FIELD_ATTRIB_SMB_BLOCK_CALL: Length = 32; break; default: break; } break; default: break; } for (i = 0; i < Length; i++) { Buffer[i+2] = (UINT8) (0xA0 + i); } Buffer[0] = 0x7A; Buffer[1] = (UINT8) Length; return (AE_OK); case ACPI_ADR_SPACE_IPMI: /* ACPI 4.0 */ AcpiOsPrintf ("AcpiExec: Received IPMI request: " "Address %X BaseAddress %X Length %X Width %X BufferLength %u\n", (UINT32) Address, (UINT32) BaseAddress, Length, BitWidth, Buffer[1]); /* * Regardless of a READ or WRITE, this handler is passed a 66-byte * buffer in which to return the IPMI status/length/data. * * Return some example data to show use of the bidirectional buffer */ Buffer[0] = 0; /* Status byte */ Buffer[1] = 64; /* Return buffer data length */ Buffer[2] = 0; /* Completion code */ Buffer[3] = 0x34; /* Power measurement */ Buffer[4] = 0x12; /* Power measurement */ Buffer[65] = 0xEE; /* last buffer byte */ return (AE_OK); default: break; } /* * Search through the linked list for this region's buffer */ BufferExists = FALSE; RegionElement = AeRegions.RegionList; if (AeRegions.NumberOfRegions) { while (!BufferExists && RegionElement) { if (RegionElement->Address == BaseAddress && RegionElement->Length == Length && RegionElement->SpaceId == SpaceId) { BufferExists = TRUE; } else { RegionElement = RegionElement->NextRegion; } } } /* * If the Region buffer does not exist, create it now */ if (!BufferExists) { /* * Do the memory allocations first */ RegionElement = AcpiOsAllocate (sizeof (AE_REGION)); if (!RegionElement) { return AE_NO_MEMORY; } RegionElement->Buffer = AcpiOsAllocate (Length); if (!RegionElement->Buffer) { AcpiOsFree (RegionElement); return AE_NO_MEMORY; } /* Initialize the region with the default fill value */ ACPI_MEMSET (RegionElement->Buffer, AcpiGbl_RegionFillValue, Length); RegionElement->Address = BaseAddress; RegionElement->Length = Length; RegionElement->SpaceId = SpaceId; RegionElement->NextRegion = NULL; /* * Increment the number of regions and put this one * at the head of the list as it will probably get accessed * more often anyway. */ AeRegions.NumberOfRegions += 1; if (AeRegions.RegionList) { RegionElement->NextRegion = AeRegions.RegionList; } AeRegions.RegionList = RegionElement; } /* * Calculate the size of the memory copy */ ByteWidth = (BitWidth / 8); if (BitWidth % 8) { ByteWidth += 1; } /* * The buffer exists and is pointed to by RegionElement. * We now need to verify the request is valid and perform the operation. * * NOTE: RegionElement->Length is in bytes, therefore it we compare against * ByteWidth (see above) */ if (((UINT64) Address + ByteWidth) > ((UINT64)(RegionElement->Address) + RegionElement->Length)) { ACPI_WARNING ((AE_INFO, "Request on [%4.4s] is beyond region limit Req-0x%X+0x%X, Base=0x%X, Len-0x%X", (RegionObject->Region.Node)->Name.Ascii, (UINT32) Address, ByteWidth, (UINT32)(RegionElement->Address), RegionElement->Length)); return AE_AML_REGION_LIMIT; } /* * Get BufferValue to point to the "address" in the buffer */ BufferValue = ((UINT8 *) RegionElement->Buffer + ((UINT64) Address - (UINT64) RegionElement->Address)); DoFunction: /* * Perform a read or write to the buffer space */ switch (Function) { case ACPI_READ: /* * Set the pointer Value to whatever is in the buffer */ ACPI_MEMCPY (Value, BufferValue, ByteWidth); break; case ACPI_WRITE: /* * Write the contents of Value to the buffer */ ACPI_MEMCPY (BufferValue, Value, ByteWidth); break; default: return AE_BAD_PARAMETER; } return AE_OK; }
ACPI_STATUS AcpiEvInitializeRegion ( ACPI_OPERAND_OBJECT *RegionObj, BOOLEAN AcpiNsLocked) { ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_ADR_SPACE_TYPE SpaceId; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_FUNCTION_TRACE_U32 (EvInitializeRegion, AcpiNsLocked); if (!RegionObj) { return_ACPI_STATUS (AE_BAD_PARAMETER); } if (RegionObj->Common.Flags & AOPOBJ_OBJECT_INITIALIZED) { return_ACPI_STATUS (AE_OK); } RegionObj->Common.Flags |= AOPOBJ_OBJECT_INITIALIZED; Node = RegionObj->Region.Node->Parent; SpaceId = RegionObj->Region.SpaceId; /* * The following loop depends upon the root Node having no parent * ie: AcpiGbl_RootNode->Parent being set to NULL */ while (Node) { /* Check to see if a handler exists */ HandlerObj = NULL; ObjDesc = AcpiNsGetAttachedObject (Node); if (ObjDesc) { /* Can only be a handler if the object exists */ switch (Node->Type) { case ACPI_TYPE_DEVICE: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: HandlerObj = ObjDesc->CommonNotify.Handler; break; case ACPI_TYPE_METHOD: /* * If we are executing module level code, the original * Node's object was replaced by this Method object and we * saved the handler in the method object. * * See AcpiNsExecModuleCode */ if (ObjDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL) { HandlerObj = ObjDesc->Method.Dispatch.Handler; } break; default: /* Ignore other objects */ break; } HandlerObj = AcpiEvFindRegionHandler (SpaceId, HandlerObj); if (HandlerObj) { /* Found correct handler */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Found handler %p for region %p in obj %p\n", HandlerObj, RegionObj, ObjDesc)); Status = AcpiEvAttachRegion (HandlerObj, RegionObj, AcpiNsLocked); /* * Tell all users that this region is usable by * running the _REG method */ if (AcpiNsLocked) { Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } Status = AcpiEvExecuteRegMethod (RegionObj, ACPI_REG_CONNECT); if (AcpiNsLocked) { Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } return_ACPI_STATUS (AE_OK); } } /* This node does not have the handler we need; Pop up one level */ Node = Node->Parent; } /* If we get here, there is no handler for this region */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "No handler for RegionType %s(%X) (RegionObj %p)\n", AcpiUtGetRegionName (SpaceId), SpaceId, RegionObj)); return_ACPI_STATUS (AE_NOT_EXIST); }
void AcpiDbDisplayHandlers ( void) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_ADR_SPACE_TYPE SpaceId; UINT32 i; /* Operation region handlers */ AcpiOsPrintf ("\nOperation Region Handlers:\n"); ObjDesc = AcpiNsGetAttachedObject (AcpiGbl_RootNode); if (ObjDesc) { for (i = 0; i < ACPI_ARRAY_LENGTH (AcpiGbl_SpaceIdList); i++) { SpaceId = AcpiGbl_SpaceIdList[i]; HandlerObj = ObjDesc->Device.Handler; AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, AcpiUtGetRegionName ((UINT8) SpaceId), SpaceId); while (HandlerObj) { if (i == HandlerObj->AddressSpace.SpaceId) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, (HandlerObj->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) ? "Default" : "User", HandlerObj->AddressSpace.Handler); goto FoundHandler; } HandlerObj = HandlerObj->AddressSpace.Next; } /* There is no handler for this SpaceId */ AcpiOsPrintf ("None\n"); FoundHandler:; } } /* Fixed event handlers */ AcpiOsPrintf ("\nFixed Event Handlers:\n"); for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, AcpiUtGetEventName (i), i); if (AcpiGbl_FixedEventHandlers[i].Handler) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, "User", AcpiGbl_FixedEventHandlers[i].Handler); } else { AcpiOsPrintf (ACPI_HANDLER_NOT_PRESENT_STRING, "None"); } } /* Miscellaneous global handlers */ AcpiOsPrintf ("\nMiscellaneous Global Handlers:\n"); for (i = 0; i < ACPI_ARRAY_LENGTH (AcpiGbl_HandlerList); i++) { AcpiOsPrintf (ACPI_HANDLER_NAME_STRING, AcpiGbl_HandlerList[i].Name); if (AcpiGbl_HandlerList[i].Handler) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, "User", AcpiGbl_HandlerList[i].Handler); } else { AcpiOsPrintf (ACPI_HANDLER_NOT_PRESENT_STRING, "None"); } } }
void AcpiEvDetachRegion( ACPI_OPERAND_OBJECT *RegionObj, BOOLEAN AcpiNsIsLocked) { ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *StartDesc; ACPI_OPERAND_OBJECT **LastObjPtr; ACPI_ADR_SPACE_SETUP RegionSetup; void **RegionContext; ACPI_OPERAND_OBJECT *RegionObj2; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (EvDetachRegion); RegionObj2 = AcpiNsGetSecondaryObject (RegionObj); if (!RegionObj2) { return_VOID; } RegionContext = &RegionObj2->Extra.RegionContext; /* Get the address handler from the region object */ HandlerObj = RegionObj->Region.Handler; if (!HandlerObj) { /* This region has no handler, all done */ return_VOID; } /* Find this region in the handler's list */ ObjDesc = HandlerObj->AddressSpace.RegionList; StartDesc = ObjDesc; LastObjPtr = &HandlerObj->AddressSpace.RegionList; while (ObjDesc) { /* Is this the correct Region? */ if (ObjDesc == RegionObj) { ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Removing Region %p from address handler %p\n", RegionObj, HandlerObj)); /* This is it, remove it from the handler's list */ *LastObjPtr = ObjDesc->Region.Next; ObjDesc->Region.Next = NULL; /* Must clear field */ if (AcpiNsIsLocked) { Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_VOID; } } /* Now stop region accesses by executing the _REG method */ Status = AcpiEvExecuteRegMethod (RegionObj, ACPI_REG_DISCONNECT); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "from region _REG, [%s]", AcpiUtGetRegionName (RegionObj->Region.SpaceId))); } if (AcpiNsIsLocked) { Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); if (ACPI_FAILURE (Status)) { return_VOID; } } /* * If the region has been activated, call the setup handler with * the deactivate notification */ if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE) { RegionSetup = HandlerObj->AddressSpace.Setup; Status = RegionSetup (RegionObj, ACPI_REGION_DEACTIVATE, HandlerObj->AddressSpace.Context, RegionContext); /* * RegionContext should have been released by the deactivate * operation. We don't need access to it anymore here. */ if (RegionContext) { *RegionContext = NULL; } /* Init routine may fail, Just ignore errors */ if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "from region handler - deactivate, [%s]", AcpiUtGetRegionName (RegionObj->Region.SpaceId))); } RegionObj->Region.Flags &= ~(AOPOBJ_SETUP_COMPLETE); } /* * Remove handler reference in the region * * NOTE: this doesn't mean that the region goes away, the region * is just inaccessible as indicated to the _REG method * * If the region is on the handler's list, this must be the * region's handler */ RegionObj->Region.Handler = NULL; AcpiUtRemoveReference (HandlerObj); return_VOID; } /* Walk the linked list of handlers */ LastObjPtr = &ObjDesc->Region.Next; ObjDesc = ObjDesc->Region.Next; /* Prevent infinite loop if list is corrupted */ if (ObjDesc == StartDesc) { ACPI_ERROR ((AE_INFO, "Circular handler list in region object %p", RegionObj)); return_VOID; } } /* If we get here, the region was not in the handler's region list */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Cannot remove region %p from address handler %p\n", RegionObj, HandlerObj)); return_VOID; }
UINT32 AcpiUtCheckAddressRange ( ACPI_ADR_SPACE_TYPE SpaceId, ACPI_PHYSICAL_ADDRESS Address, UINT32 Length, BOOLEAN Warn) { ACPI_ADDRESS_RANGE *RangeInfo; ACPI_PHYSICAL_ADDRESS EndAddress; char *Pathname; UINT32 OverlapCount = 0; ACPI_FUNCTION_TRACE (UtCheckAddressRange); if ((SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) && (SpaceId != ACPI_ADR_SPACE_SYSTEM_IO)) { return_UINT32 (0); } RangeInfo = AcpiGbl_AddressRangeList[SpaceId]; EndAddress = Address + Length - 1; /* Check entire list for all possible conflicts */ while (RangeInfo) { /* * Check if the requested address/length overlaps this * address range. There are four cases to consider: * * 1) Input address/length is contained completely in the * address range * 2) Input address/length overlaps range at the range start * 3) Input address/length overlaps range at the range end * 4) Input address/length completely encompasses the range */ if ((Address <= RangeInfo->EndAddress) && (EndAddress >= RangeInfo->StartAddress)) { /* Found an address range overlap */ OverlapCount++; if (Warn) /* Optional warning message */ { Pathname = AcpiNsGetNormalizedPathname (RangeInfo->RegionNode, TRUE); ACPI_WARNING ((AE_INFO, "%s range 0x%8.8X%8.8X-0x%8.8X%8.8X conflicts with OpRegion 0x%8.8X%8.8X-0x%8.8X%8.8X (%s)", AcpiUtGetRegionName (SpaceId), ACPI_FORMAT_UINT64 (Address), ACPI_FORMAT_UINT64 (EndAddress), ACPI_FORMAT_UINT64 (RangeInfo->StartAddress), ACPI_FORMAT_UINT64 (RangeInfo->EndAddress), Pathname)); ACPI_FREE (Pathname); } } RangeInfo = RangeInfo->Next; } return_UINT32 (OverlapCount); }
void AcpiDbDisplayHandlers ( void) { ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *HandlerObj; ACPI_ADR_SPACE_TYPE SpaceId; UINT32 i; /* Operation region handlers */ AcpiOsPrintf ("\nOperation Region Handlers at the namespace root:\n"); ObjDesc = AcpiNsGetAttachedObject (AcpiGbl_RootNode); if (ObjDesc) { for (i = 0; i < ACPI_ARRAY_LENGTH (AcpiGbl_SpaceIdList); i++) { SpaceId = AcpiGbl_SpaceIdList[i]; HandlerObj = ObjDesc->Device.Handler; AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, AcpiUtGetRegionName ((UINT8) SpaceId), SpaceId); while (HandlerObj) { if (AcpiGbl_SpaceIdList[i] == HandlerObj->AddressSpace.SpaceId) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, (HandlerObj->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) ? "Default" : "User", HandlerObj->AddressSpace.Handler); goto FoundHandler; } HandlerObj = HandlerObj->AddressSpace.Next; } /* There is no handler for this SpaceId */ AcpiOsPrintf ("None\n"); FoundHandler:; } /* Find all handlers for user-defined SpaceIDs */ HandlerObj = ObjDesc->Device.Handler; while (HandlerObj) { if (HandlerObj->AddressSpace.SpaceId >= ACPI_USER_REGION_BEGIN) { AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, "User-defined ID", HandlerObj->AddressSpace.SpaceId); AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, (HandlerObj->AddressSpace.HandlerFlags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) ? "Default" : "User", HandlerObj->AddressSpace.Handler); } HandlerObj = HandlerObj->AddressSpace.Next; } } #if (!ACPI_REDUCED_HARDWARE) /* Fixed event handlers */ AcpiOsPrintf ("\nFixed Event Handlers:\n"); for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { AcpiOsPrintf (ACPI_PREDEFINED_PREFIX, AcpiUtGetEventName (i), i); if (AcpiGbl_FixedEventHandlers[i].Handler) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, "User", AcpiGbl_FixedEventHandlers[i].Handler); } else { AcpiOsPrintf (ACPI_HANDLER_NOT_PRESENT_STRING, "None"); } } #endif /* !ACPI_REDUCED_HARDWARE */ /* Miscellaneous global handlers */ AcpiOsPrintf ("\nMiscellaneous Global Handlers:\n"); for (i = 0; i < ACPI_ARRAY_LENGTH (AcpiGbl_HandlerList); i++) { AcpiOsPrintf (ACPI_HANDLER_NAME_STRING, AcpiGbl_HandlerList[i].Name); if (AcpiGbl_HandlerList[i].Handler) { AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING, "User", AcpiGbl_HandlerList[i].Handler); } else { AcpiOsPrintf (ACPI_HANDLER_NOT_PRESENT_STRING, "None"); } } /* Other handlers that are installed throughout the namespace */ AcpiOsPrintf ("\nOperation Region Handlers for specific devices:\n"); (void) AcpiWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, AcpiDbDisplayNonRootHandlers, NULL, NULL, NULL); }
ACPI_STATUS AcpiEvInitializeRegion ( ACPI_OPERAND_OBJECT *RegionObj) { ACPI_OPERAND_OBJECT *HandlerObj; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_ADR_SPACE_TYPE SpaceId; ACPI_NAMESPACE_NODE *Node; ACPI_FUNCTION_TRACE (EvInitializeRegion); if (!RegionObj) { return_ACPI_STATUS (AE_BAD_PARAMETER); } if (RegionObj->Common.Flags & AOPOBJ_OBJECT_INITIALIZED) { return_ACPI_STATUS (AE_OK); } RegionObj->Common.Flags |= AOPOBJ_OBJECT_INITIALIZED; Node = RegionObj->Region.Node->Parent; SpaceId = RegionObj->Region.SpaceId; /* * The following loop depends upon the root Node having no parent * ie: AcpiGbl_RootNode->Parent being set to NULL */ while (Node) { /* Check to see if a handler exists */ HandlerObj = NULL; ObjDesc = AcpiNsGetAttachedObject (Node); if (ObjDesc) { /* Can only be a handler if the object exists */ switch (Node->Type) { case ACPI_TYPE_DEVICE: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: HandlerObj = ObjDesc->CommonNotify.Handler; break; case ACPI_TYPE_METHOD: /* * If we are executing module level code, the original * Node's object was replaced by this Method object and we * saved the handler in the method object. * * Note: Only used for the legacy MLC support. Will * be removed in the future. * * See AcpiNsExecModuleCode */ if (!AcpiGbl_ExecuteTablesAsMethods && ObjDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL) { HandlerObj = ObjDesc->Method.Dispatch.Handler; } break; default: /* Ignore other objects */ break; } HandlerObj = AcpiEvFindRegionHandler (SpaceId, HandlerObj); if (HandlerObj) { /* Found correct handler */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Found handler %p for region %p in obj %p\n", HandlerObj, RegionObj, ObjDesc)); (void) AcpiEvAttachRegion (HandlerObj, RegionObj, FALSE); /* * Tell all users that this region is usable by * running the _REG method */ AcpiExExitInterpreter (); (void) AcpiEvExecuteRegMethod (RegionObj, ACPI_REG_CONNECT); AcpiExEnterInterpreter (); return_ACPI_STATUS (AE_OK); } } /* This node does not have the handler we need; Pop up one level */ Node = Node->Parent; } /* * If we get here, there is no handler for this region. This is not * fatal because many regions get created before a handler is installed * for said region. */ ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "No handler for RegionType %s(%X) (RegionObj %p)\n", AcpiUtGetRegionName (SpaceId), SpaceId, RegionObj)); return_ACPI_STATUS (AE_OK); }