Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux

Pull ACPI & power management update from Len Brown:
 "Re-write of the turbostat tool.
     lower overhead was necessary for measuring very large system when
     they are very idle.

  IVB support in intel_idle
     It's what I run on my IVB, others should be able to also:-)

  ACPICA core update
     We have found some bugs due to divergence between Linux and the
     upstream ACPICA base.  Most of these patches are to reduce that
     divergence to reduce the risk of future bugs.

  Some cpuidle updates, mostly for non-Intel
     More will be coming, as they depend on this part.

  Some thermal management changes needed by non-ACPI systems.

  Some _OST (OS Status Indication) updates for hot ACPI hot-plug."

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (51 commits)
  Thermal: Documentation update
  Thermal: Add Hysteresis attributes
  Thermal: Make Thermal trip points writeable
  ACPI/AC: prevent OOPS on some boxes due to missing check power_supply_register() return value check
  tools/power: turbostat: fix large c1% issue
  tools/power: turbostat v2 - re-write for efficiency
  ACPICA: Update to version 20120711
  ACPICA: AcpiSrc: Fix some translation issues for Linux conversion
  ACPICA: Update header files copyrights to 2012
  ACPICA: Add new ACPI table load/unload external interfaces
  ACPICA: Split file: tbxface.c -> tbxfload.c
  ACPICA: Add PCC address space to space ID decode function
  ACPICA: Fix some comment fields
  ACPICA: Table manager: deploy new firmware error/warning interfaces
  ACPICA: Add new interfaces for BIOS(firmware) errors and warnings
  ACPICA: Split exception code utilities to a new file, utexcep.c
  ACPI: acpi_pad: tune round_robin_time
  ACPICA: Update to version 20120620
  ACPICA: Add support for implicit notify on multiple devices
  ACPICA: Update comments; no functional change
  ...

1 files changed, 389 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c
new file mode 100644
index 000000000000..f87cc63e69a1
--- /dev/null
+++ b/drivers/acpi/acpica/tbxfload.c
@@ -0,0 +1,389 @@
+/******************************************************************************
+ *
+ * Module Name: tbxfload - Table load/unload external interfaces
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2012, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <linux/export.h>
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "actables.h"
+
+#define _COMPONENT          ACPI_TABLES
+ACPI_MODULE_NAME("tbxfload")
+
+/* Local prototypes */
+static acpi_status acpi_tb_load_namespace(void);
+
+static int no_auto_ssdt;
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_load_tables
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Load the ACPI tables from the RSDT/XSDT
+ *
+ ******************************************************************************/
+
+acpi_status acpi_load_tables(void)
+{
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(acpi_load_tables);
+
+	/* Load the namespace from the tables */
+
+	status = acpi_tb_load_namespace();
+	if (ACPI_FAILURE(status)) {
+		ACPI_EXCEPTION((AE_INFO, status,
+				"While loading namespace from ACPI tables"));
+	}
+
+	return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_load_tables)
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_tb_load_namespace
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
+ *              the RSDT/XSDT.
+ *
+ ******************************************************************************/
+static acpi_status acpi_tb_load_namespace(void)
+{
+	acpi_status status;
+	u32 i;
+	struct acpi_table_header *new_dsdt;
+
+	ACPI_FUNCTION_TRACE(tb_load_namespace);
+
+	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+
+	/*
+	 * Load the namespace. The DSDT is required, but any SSDT and
+	 * PSDT tables are optional. Verify the DSDT.
+	 */
+	if (!acpi_gbl_root_table_list.current_table_count ||
+	    !ACPI_COMPARE_NAME(&
+			       (acpi_gbl_root_table_list.
+				tables[ACPI_TABLE_INDEX_DSDT].signature),
+			       ACPI_SIG_DSDT)
+	    ||
+	    ACPI_FAILURE(acpi_tb_verify_table
+			 (&acpi_gbl_root_table_list.
+			  tables[ACPI_TABLE_INDEX_DSDT]))) {
+		status = AE_NO_ACPI_TABLES;
+		goto unlock_and_exit;
+	}
+
+	/*
+	 * Save the DSDT pointer for simple access. This is the mapped memory
+	 * address. We must take care here because the address of the .Tables
+	 * array can change dynamically as tables are loaded at run-time. Note:
+	 * .Pointer field is not validated until after call to acpi_tb_verify_table.
+	 */
+	acpi_gbl_DSDT =
+	    acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].pointer;
+
+	/*
+	 * Optionally copy the entire DSDT to local memory (instead of simply
+	 * mapping it.) There are some BIOSs that corrupt or replace the original
+	 * DSDT, creating the need for this option. Default is FALSE, do not copy
+	 * the DSDT.
+	 */
+	if (acpi_gbl_copy_dsdt_locally) {
+		new_dsdt = acpi_tb_copy_dsdt(ACPI_TABLE_INDEX_DSDT);
+		if (new_dsdt) {
+			acpi_gbl_DSDT = new_dsdt;
+		}
+	}
+
+	/*
+	 * Save the original DSDT header for detection of table corruption
+	 * and/or replacement of the DSDT from outside the OS.
+	 */
+	ACPI_MEMCPY(&acpi_gbl_original_dsdt_header, acpi_gbl_DSDT,
+		    sizeof(struct acpi_table_header));
+
+	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
+
+	/* Load and parse tables */
+
+	status = acpi_ns_load_table(ACPI_TABLE_INDEX_DSDT, acpi_gbl_root_node);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
+
+	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+	for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) {
+		if ((!ACPI_COMPARE_NAME
+		     (&(acpi_gbl_root_table_list.tables[i].signature),
+		      ACPI_SIG_SSDT)
+		     &&
+		     !ACPI_COMPARE_NAME(&
+					(acpi_gbl_root_table_list.tables[i].
+					 signature), ACPI_SIG_PSDT))
+		    ||
+		    ACPI_FAILURE(acpi_tb_verify_table
+				 (&acpi_gbl_root_table_list.tables[i]))) {
+			continue;
+		}
+
+		if (no_auto_ssdt) {
+			printk(KERN_WARNING "ACPI: SSDT ignored due to \"acpi_no_auto_ssdt\"\n");
+			continue;
+		}
+
+		/* Ignore errors while loading tables, get as many as possible */
+
+		(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
+		(void)acpi_ns_load_table(i, acpi_gbl_root_node);
+		(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
+
+      unlock_and_exit:
+	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_load_table
+ *
+ * PARAMETERS:  table               - Pointer to a buffer containing the ACPI
+ *                                    table to be loaded.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Dynamically load an ACPI table from the caller's buffer. Must
+ *              be a valid ACPI table with a valid ACPI table header.
+ *              Note1: Mainly intended to support hotplug addition of SSDTs.
+ *              Note2: Does not copy the incoming table. User is reponsible
+ *              to ensure that the table is not deleted or unmapped.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_load_table(struct acpi_table_header *table)
+{
+	acpi_status status;
+	struct acpi_table_desc table_desc;
+	u32 table_index;
+
+	ACPI_FUNCTION_TRACE(acpi_load_table);
+
+	/* Parameter validation */
+
+	if (!table) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
+	/* Init local table descriptor */
+
+	ACPI_MEMSET(&table_desc, 0, sizeof(struct acpi_table_desc));
+	table_desc.address = ACPI_PTR_TO_PHYSADDR(table);
+	table_desc.pointer = table;
+	table_desc.length = table->length;
+	table_desc.flags = ACPI_TABLE_ORIGIN_UNKNOWN;
+
+	/* Must acquire the interpreter lock during this operation */
+
+	status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Install the table and load it into the namespace */
+
+	ACPI_INFO((AE_INFO, "Host-directed Dynamic ACPI Table Load:"));
+	status = acpi_tb_add_table(&table_desc, &table_index);
+	if (ACPI_FAILURE(status)) {
+		goto unlock_and_exit;
+	}
+
+	status = acpi_ns_load_table(table_index, acpi_gbl_root_node);
+
+	/* Invoke table handler if present */
+
+	if (acpi_gbl_table_handler) {
+		(void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD, table,
+					     acpi_gbl_table_handler_context);
+	}
+
+      unlock_and_exit:
+	(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
+	return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_load_table)
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_unload_parent_table
+ *
+ * PARAMETERS:  object              - Handle to any namespace object owned by
+ *                                    the table to be unloaded
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Via any namespace object within an SSDT or OEMx table, unloads
+ *              the table and deletes all namespace objects associated with
+ *              that table. Unloading of the DSDT is not allowed.
+ *              Note: Mainly intended to support hotplug removal of SSDTs.
+ *
+ ******************************************************************************/
+acpi_status acpi_unload_parent_table(acpi_handle object)
+{
+	struct acpi_namespace_node *node =
+	    ACPI_CAST_PTR(struct acpi_namespace_node, object);
+	acpi_status status = AE_NOT_EXIST;
+	acpi_owner_id owner_id;
+	u32 i;
+
+	ACPI_FUNCTION_TRACE(acpi_unload_parent_table);
+
+	/* Parameter validation */
+
+	if (!object) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
+	/*
+	 * The node owner_id is currently the same as the parent table ID.
+	 * However, this could change in the future.
+	 */
+	owner_id = node->owner_id;
+	if (!owner_id) {
+
+		/* owner_id==0 means DSDT is the owner. DSDT cannot be unloaded */
+
+		return_ACPI_STATUS(AE_TYPE);
+	}
+
+	/* Must acquire the interpreter lock during this operation */
+
+	status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Find the table in the global table list */
+
+	for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
+		if (owner_id != acpi_gbl_root_table_list.tables[i].owner_id) {
+			continue;
+		}
+
+		/*
+		 * Allow unload of SSDT and OEMx tables only. Do not allow unload
+		 * of the DSDT. No other types of tables should get here, since
+		 * only these types can contain AML and thus are the only types
+		 * that can create namespace objects.
+		 */
+		if (ACPI_COMPARE_NAME
+		    (acpi_gbl_root_table_list.tables[i].signature.ascii,
+		     ACPI_SIG_DSDT)) {
+			status = AE_TYPE;
+			break;
+		}
+
+		/* Ensure the table is actually loaded */
+
+		if (!acpi_tb_is_table_loaded(i)) {
+			status = AE_NOT_EXIST;
+			break;
+		}
+
+		/* Invoke table handler if present */
+
+		if (acpi_gbl_table_handler) {
+			(void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_UNLOAD,
+						     acpi_gbl_root_table_list.
+						     tables[i].pointer,
+						     acpi_gbl_table_handler_context);
+		}
+
+		/*
+		 * Delete all namespace objects owned by this table. Note that
+		 * these objects can appear anywhere in the namespace by virtue
+		 * of the AML "Scope" operator. Thus, we need to track ownership
+		 * by an ID, not simply a position within the hierarchy.
+		 */
+		status = acpi_tb_delete_namespace_by_owner(i);
+		if (ACPI_FAILURE(status)) {
+			break;
+		}
+
+		status = acpi_tb_release_owner_id(i);
+		acpi_tb_set_table_loaded_flag(i, FALSE);
+		break;
+	}
+
+	(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
+	return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_unload_parent_table)
+
+static int __init acpi_no_auto_ssdt_setup(char *s) {
+
+        printk(KERN_NOTICE "ACPI: SSDT auto-load disabled\n");
+
+        no_auto_ssdt = 1;
+
+        return 1;
+}
+
+__setup("acpi_no_auto_ssdt", acpi_no_auto_ssdt_setup);