Initial import

1 files changed, 411 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c
new file mode 100644
index 000000000..cbb7034d2
--- /dev/null
+++ b/drivers/acpi/acpica/utmisc.c
@@ -0,0 +1,411 @@
+/*******************************************************************************
+ *
+ * Module Name: utmisc - common utility procedures
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, 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.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_UTILITIES
+ACPI_MODULE_NAME("utmisc")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_is_pci_root_bridge
+ *
+ * PARAMETERS:  id              - The HID/CID in string format
+ *
+ * RETURN:      TRUE if the Id is a match for a PCI/PCI-Express Root Bridge
+ *
+ * DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID.
+ *
+ ******************************************************************************/
+u8 acpi_ut_is_pci_root_bridge(char *id)
+{
+
+	/*
+	 * Check if this is a PCI root bridge.
+	 * ACPI 3.0+: check for a PCI Express root also.
+	 */
+	if (!(ACPI_STRCMP(id,
+			  PCI_ROOT_HID_STRING)) ||
+	    !(ACPI_STRCMP(id, PCI_EXPRESS_ROOT_HID_STRING))) {
+		return (TRUE);
+	}
+
+	return (FALSE);
+}
+
+#if (defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP)
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_is_aml_table
+ *
+ * PARAMETERS:  table               - An ACPI table
+ *
+ * RETURN:      TRUE if table contains executable AML; FALSE otherwise
+ *
+ * DESCRIPTION: Check ACPI Signature for a table that contains AML code.
+ *              Currently, these are DSDT,SSDT,PSDT. All other table types are
+ *              data tables that do not contain AML code.
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_is_aml_table(struct acpi_table_header *table)
+{
+
+	/* These are the only tables that contain executable AML */
+
+	if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) ||
+	    ACPI_COMPARE_NAME(table->signature, ACPI_SIG_PSDT) ||
+	    ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT)) {
+		return (TRUE);
+	}
+
+	return (FALSE);
+}
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_dword_byte_swap
+ *
+ * PARAMETERS:  value           - Value to be converted
+ *
+ * RETURN:      u32 integer with bytes swapped
+ *
+ * DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes)
+ *
+ ******************************************************************************/
+
+u32 acpi_ut_dword_byte_swap(u32 value)
+{
+	union {
+		u32 value;
+		u8 bytes[4];
+	} out;
+	union {
+		u32 value;
+		u8 bytes[4];
+	} in;
+
+	ACPI_FUNCTION_ENTRY();
+
+	in.value = value;
+
+	out.bytes[0] = in.bytes[3];
+	out.bytes[1] = in.bytes[2];
+	out.bytes[2] = in.bytes[1];
+	out.bytes[3] = in.bytes[0];
+
+	return (out.value);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_set_integer_width
+ *
+ * PARAMETERS:  Revision            From DSDT header
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Set the global integer bit width based upon the revision
+ *              of the DSDT. For Revision 1 and 0, Integers are 32 bits.
+ *              For Revision 2 and above, Integers are 64 bits. Yes, this
+ *              makes a difference.
+ *
+ ******************************************************************************/
+
+void acpi_ut_set_integer_width(u8 revision)
+{
+
+	if (revision < 2) {
+
+		/* 32-bit case */
+
+		acpi_gbl_integer_bit_width = 32;
+		acpi_gbl_integer_nybble_width = 8;
+		acpi_gbl_integer_byte_width = 4;
+	} else {
+		/* 64-bit case (ACPI 2.0+) */
+
+		acpi_gbl_integer_bit_width = 64;
+		acpi_gbl_integer_nybble_width = 16;
+		acpi_gbl_integer_byte_width = 8;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_create_update_state_and_push
+ *
+ * PARAMETERS:  object          - Object to be added to the new state
+ *              action          - Increment/Decrement
+ *              state_list      - List the state will be added to
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a new state and push it
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_create_update_state_and_push(union acpi_operand_object *object,
+				     u16 action,
+				     union acpi_generic_state **state_list)
+{
+	union acpi_generic_state *state;
+
+	ACPI_FUNCTION_ENTRY();
+
+	/* Ignore null objects; these are expected */
+
+	if (!object) {
+		return (AE_OK);
+	}
+
+	state = acpi_ut_create_update_state(object, action);
+	if (!state) {
+		return (AE_NO_MEMORY);
+	}
+
+	acpi_ut_push_generic_state(state_list, state);
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_walk_package_tree
+ *
+ * PARAMETERS:  source_object       - The package to walk
+ *              target_object       - Target object (if package is being copied)
+ *              walk_callback       - Called once for each package element
+ *              context             - Passed to the callback function
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Walk through a package
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_walk_package_tree(union acpi_operand_object *source_object,
+			  void *target_object,
+			  acpi_pkg_callback walk_callback, void *context)
+{
+	acpi_status status = AE_OK;
+	union acpi_generic_state *state_list = NULL;
+	union acpi_generic_state *state;
+	u32 this_index;
+	union acpi_operand_object *this_source_obj;
+
+	ACPI_FUNCTION_TRACE(ut_walk_package_tree);
+
+	state = acpi_ut_create_pkg_state(source_object, target_object, 0);
+	if (!state) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	while (state) {
+
+		/* Get one element of the package */
+
+		this_index = state->pkg.index;
+		this_source_obj = (union acpi_operand_object *)
+		    state->pkg.source_object->package.elements[this_index];
+
+		/*
+		 * Check for:
+		 * 1) An uninitialized package element. It is completely
+		 *    legal to declare a package and leave it uninitialized
+		 * 2) Not an internal object - can be a namespace node instead
+		 * 3) Any type other than a package. Packages are handled in else
+		 *    case below.
+		 */
+		if ((!this_source_obj) ||
+		    (ACPI_GET_DESCRIPTOR_TYPE(this_source_obj) !=
+		     ACPI_DESC_TYPE_OPERAND)
+		    || (this_source_obj->common.type != ACPI_TYPE_PACKAGE)) {
+			status =
+			    walk_callback(ACPI_COPY_TYPE_SIMPLE,
+					  this_source_obj, state, context);
+			if (ACPI_FAILURE(status)) {
+				return_ACPI_STATUS(status);
+			}
+
+			state->pkg.index++;
+			while (state->pkg.index >=
+			       state->pkg.source_object->package.count) {
+				/*
+				 * We've handled all of the objects at this level,  This means
+				 * that we have just completed a package. That package may
+				 * have contained one or more packages itself.
+				 *
+				 * Delete this state and pop the previous state (package).
+				 */
+				acpi_ut_delete_generic_state(state);
+				state = acpi_ut_pop_generic_state(&state_list);
+
+				/* Finished when there are no more states */
+
+				if (!state) {
+					/*
+					 * We have handled all of the objects in the top level
+					 * package just add the length of the package objects
+					 * and exit
+					 */
+					return_ACPI_STATUS(AE_OK);
+				}
+
+				/*
+				 * Go back up a level and move the index past the just
+				 * completed package object.
+				 */
+				state->pkg.index++;
+			}
+		} else {
+			/* This is a subobject of type package */
+
+			status =
+			    walk_callback(ACPI_COPY_TYPE_PACKAGE,
+					  this_source_obj, state, context);
+			if (ACPI_FAILURE(status)) {
+				return_ACPI_STATUS(status);
+			}
+
+			/*
+			 * Push the current state and create a new one
+			 * The callback above returned a new target package object.
+			 */
+			acpi_ut_push_generic_state(&state_list, state);
+			state = acpi_ut_create_pkg_state(this_source_obj,
+							 state->pkg.
+							 this_target_obj, 0);
+			if (!state) {
+
+				/* Free any stacked Update State objects */
+
+				while (state_list) {
+					state =
+					    acpi_ut_pop_generic_state
+					    (&state_list);
+					acpi_ut_delete_generic_state(state);
+				}
+				return_ACPI_STATUS(AE_NO_MEMORY);
+			}
+		}
+	}
+
+	/* We should never get here */
+
+	return_ACPI_STATUS(AE_AML_INTERNAL);
+}
+
+#ifdef ACPI_DEBUG_OUTPUT
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_display_init_pathname
+ *
+ * PARAMETERS:  type                - Object type of the node
+ *              obj_handle          - Handle whose pathname will be displayed
+ *              path                - Additional path string to be appended.
+ *                                      (NULL if no extra path)
+ *
+ * RETURN:      acpi_status
+ *
+ * DESCRIPTION: Display full pathname of an object, DEBUG ONLY
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_display_init_pathname(u8 type,
+			      struct acpi_namespace_node *obj_handle,
+			      char *path)
+{
+	acpi_status status;
+	struct acpi_buffer buffer;
+
+	ACPI_FUNCTION_ENTRY();
+
+	/* Only print the path if the appropriate debug level is enabled */
+
+	if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
+		return;
+	}
+
+	/* Get the full pathname to the node */
+
+	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+	status = acpi_ns_handle_to_pathname(obj_handle, &buffer);
+	if (ACPI_FAILURE(status)) {
+		return;
+	}
+
+	/* Print what we're doing */
+
+	switch (type) {
+	case ACPI_TYPE_METHOD:
+
+		acpi_os_printf("Executing  ");
+		break;
+
+	default:
+
+		acpi_os_printf("Initializing ");
+		break;
+	}
+
+	/* Print the object type and pathname */
+
+	acpi_os_printf("%-12s %s",
+		       acpi_ut_get_type_name(type), (char *)buffer.pointer);
+
+	/* Extra path is used to append names like _STA, _INI, etc. */
+
+	if (path) {
+		acpi_os_printf(".%s", path);
+	}
+	acpi_os_printf("\n");
+
+	ACPI_FREE(buffer.pointer);
+}
+#endif