Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 458 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c
new file mode 100644
index 000000000..0a01c08da
--- /dev/null
+++ b/drivers/acpi/acpica/utosi.c
@@ -0,0 +1,458 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: utosi - Support for the _OSI predefined control method
+ *
+ * Copyright (C) 2000 - 2020, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+
+#define _COMPONENT          ACPI_UTILITIES
+ACPI_MODULE_NAME("utosi")
+
+/******************************************************************************
+ *
+ * ACPICA policy for new _OSI strings:
+ *
+ * It is the stated policy of ACPICA that new _OSI strings will be integrated
+ * into this module as soon as possible after they are defined. It is strongly
+ * recommended that all ACPICA hosts mirror this policy and integrate any
+ * changes to this module as soon as possible. There are several historical
+ * reasons behind this policy:
+ *
+ * 1) New BIOSs tend to test only the case where the host responds TRUE to
+ *    the latest version of Windows, which would respond to the latest/newest
+ *    _OSI string. Not responding TRUE to the latest version of Windows will
+ *    risk executing untested code paths throughout the DSDT and SSDTs.
+ *
+ * 2) If a new _OSI string is recognized only after a significant delay, this
+ *    has the potential to cause problems on existing working machines because
+ *    of the possibility that a new and different path through the ASL code
+ *    will be executed.
+ *
+ * 3) New _OSI strings are tending to come out about once per year. A delay
+ *    in recognizing a new string for a significant amount of time risks the
+ *    release of another string which only compounds the initial problem.
+ *
+ *****************************************************************************/
+/*
+ * Strings supported by the _OSI predefined control method (which is
+ * implemented internally within this module.)
+ *
+ * March 2009: Removed "Linux" as this host no longer wants to respond true
+ * for this string. Basically, the only safe OS strings are windows-related
+ * and in many or most cases represent the only test path within the
+ * BIOS-provided ASL code.
+ *
+ * The last element of each entry is used to track the newest version of
+ * Windows that the BIOS has requested.
+ */
+static struct acpi_interface_info acpi_default_supported_interfaces[] = {
+	/* Operating System Vendor Strings */
+
+	{"Windows 2000", NULL, 0, ACPI_OSI_WIN_2000},	/* Windows 2000 */
+	{"Windows 2001", NULL, 0, ACPI_OSI_WIN_XP},	/* Windows XP */
+	{"Windows 2001 SP1", NULL, 0, ACPI_OSI_WIN_XP_SP1},	/* Windows XP SP1 */
+	{"Windows 2001.1", NULL, 0, ACPI_OSI_WINSRV_2003},	/* Windows Server 2003 */
+	{"Windows 2001 SP2", NULL, 0, ACPI_OSI_WIN_XP_SP2},	/* Windows XP SP2 */
+	{"Windows 2001.1 SP1", NULL, 0, ACPI_OSI_WINSRV_2003_SP1},	/* Windows Server 2003 SP1 - Added 03/2006 */
+	{"Windows 2006", NULL, 0, ACPI_OSI_WIN_VISTA},	/* Windows vista - Added 03/2006 */
+	{"Windows 2006.1", NULL, 0, ACPI_OSI_WINSRV_2008},	/* Windows Server 2008 - Added 09/2009 */
+	{"Windows 2006 SP1", NULL, 0, ACPI_OSI_WIN_VISTA_SP1},	/* Windows Vista SP1 - Added 09/2009 */
+	{"Windows 2006 SP2", NULL, 0, ACPI_OSI_WIN_VISTA_SP2},	/* Windows Vista SP2 - Added 09/2010 */
+	{"Windows 2009", NULL, 0, ACPI_OSI_WIN_7},	/* Windows 7 and Server 2008 R2 - Added 09/2009 */
+	{"Windows 2012", NULL, 0, ACPI_OSI_WIN_8},	/* Windows 8 and Server 2012 - Added 08/2012 */
+	{"Windows 2013", NULL, 0, ACPI_OSI_WIN_8_1},	/* Windows 8.1 and Server 2012 R2 - Added 01/2014 */
+	{"Windows 2015", NULL, 0, ACPI_OSI_WIN_10},	/* Windows 10 - Added 03/2015 */
+	{"Windows 2016", NULL, 0, ACPI_OSI_WIN_10_RS1},	/* Windows 10 version 1607 - Added 12/2017 */
+	{"Windows 2017", NULL, 0, ACPI_OSI_WIN_10_RS2},	/* Windows 10 version 1703 - Added 12/2017 */
+	{"Windows 2017.2", NULL, 0, ACPI_OSI_WIN_10_RS3},	/* Windows 10 version 1709 - Added 02/2018 */
+	{"Windows 2018", NULL, 0, ACPI_OSI_WIN_10_RS4},	/* Windows 10 version 1803 - Added 11/2018 */
+	{"Windows 2018.2", NULL, 0, ACPI_OSI_WIN_10_RS5},	/* Windows 10 version 1809 - Added 11/2018 */
+	{"Windows 2019", NULL, 0, ACPI_OSI_WIN_10_19H1},	/* Windows 10 version 1903 - Added 08/2019 */
+
+	/* Feature Group Strings */
+
+	{"Extended Address Space Descriptor", NULL, ACPI_OSI_FEATURE, 0},
+
+	/*
+	 * All "optional" feature group strings (features that are implemented
+	 * by the host) should be dynamically modified to VALID by the host via
+	 * acpi_install_interface or acpi_update_interfaces. Such optional feature
+	 * group strings are set as INVALID by default here.
+	 */
+
+	{"Module Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
+	{"Processor Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
+	{"3.0 Thermal Model", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
+	{"3.0 _SCP Extensions", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0},
+	{"Processor Aggregator Device", NULL, ACPI_OSI_OPTIONAL_FEATURE, 0}
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_initialize_interfaces
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Initialize the global _OSI supported interfaces list
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_initialize_interfaces(void)
+{
+	acpi_status status;
+	u32 i;
+
+	status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	acpi_gbl_supported_interfaces = acpi_default_supported_interfaces;
+
+	/* Link the static list of supported interfaces */
+
+	for (i = 0;
+	     i < (ACPI_ARRAY_LENGTH(acpi_default_supported_interfaces) - 1);
+	     i++) {
+		acpi_default_supported_interfaces[i].next =
+		    &acpi_default_supported_interfaces[(acpi_size)i + 1];
+	}
+
+	acpi_os_release_mutex(acpi_gbl_osi_mutex);
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_interface_terminate
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Delete all interfaces in the global list. Sets
+ *              acpi_gbl_supported_interfaces to NULL.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_interface_terminate(void)
+{
+	acpi_status status;
+	struct acpi_interface_info *next_interface;
+
+	status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	next_interface = acpi_gbl_supported_interfaces;
+	while (next_interface) {
+		acpi_gbl_supported_interfaces = next_interface->next;
+
+		if (next_interface->flags & ACPI_OSI_DYNAMIC) {
+
+			/* Only interfaces added at runtime can be freed */
+
+			ACPI_FREE(next_interface->name);
+			ACPI_FREE(next_interface);
+		} else {
+			/* Interface is in static list. Reset it to invalid or valid. */
+
+			if (next_interface->flags & ACPI_OSI_DEFAULT_INVALID) {
+				next_interface->flags |= ACPI_OSI_INVALID;
+			} else {
+				next_interface->flags &= ~ACPI_OSI_INVALID;
+			}
+		}
+
+		next_interface = acpi_gbl_supported_interfaces;
+	}
+
+	acpi_os_release_mutex(acpi_gbl_osi_mutex);
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_install_interface
+ *
+ * PARAMETERS:  interface_name      - The interface to install
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Install the interface into the global interface list.
+ *              Caller MUST hold acpi_gbl_osi_mutex
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_install_interface(acpi_string interface_name)
+{
+	struct acpi_interface_info *interface_info;
+
+	/* Allocate info block and space for the name string */
+
+	interface_info =
+	    ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_interface_info));
+	if (!interface_info) {
+		return (AE_NO_MEMORY);
+	}
+
+	interface_info->name = ACPI_ALLOCATE_ZEROED(strlen(interface_name) + 1);
+	if (!interface_info->name) {
+		ACPI_FREE(interface_info);
+		return (AE_NO_MEMORY);
+	}
+
+	/* Initialize new info and insert at the head of the global list */
+
+	strcpy(interface_info->name, interface_name);
+	interface_info->flags = ACPI_OSI_DYNAMIC;
+	interface_info->next = acpi_gbl_supported_interfaces;
+
+	acpi_gbl_supported_interfaces = interface_info;
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_remove_interface
+ *
+ * PARAMETERS:  interface_name      - The interface to remove
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Remove the interface from the global interface list.
+ *              Caller MUST hold acpi_gbl_osi_mutex
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_remove_interface(acpi_string interface_name)
+{
+	struct acpi_interface_info *previous_interface;
+	struct acpi_interface_info *next_interface;
+
+	previous_interface = next_interface = acpi_gbl_supported_interfaces;
+	while (next_interface) {
+		if (!strcmp(interface_name, next_interface->name)) {
+			/*
+			 * Found: name is in either the static list
+			 * or was added at runtime
+			 */
+			if (next_interface->flags & ACPI_OSI_DYNAMIC) {
+
+				/* Interface was added dynamically, remove and free it */
+
+				if (previous_interface == next_interface) {
+					acpi_gbl_supported_interfaces =
+					    next_interface->next;
+				} else {
+					previous_interface->next =
+					    next_interface->next;
+				}
+
+				ACPI_FREE(next_interface->name);
+				ACPI_FREE(next_interface);
+			} else {
+				/*
+				 * Interface is in static list. If marked invalid, then
+				 * it does not actually exist. Else, mark it invalid.
+				 */
+				if (next_interface->flags & ACPI_OSI_INVALID) {
+					return (AE_NOT_EXIST);
+				}
+
+				next_interface->flags |= ACPI_OSI_INVALID;
+			}
+
+			return (AE_OK);
+		}
+
+		previous_interface = next_interface;
+		next_interface = next_interface->next;
+	}
+
+	/* Interface was not found */
+
+	return (AE_NOT_EXIST);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_update_interfaces
+ *
+ * PARAMETERS:  action              - Actions to be performed during the
+ *                                    update
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor
+ *              strings or/and feature group strings.
+ *              Caller MUST hold acpi_gbl_osi_mutex
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_update_interfaces(u8 action)
+{
+	struct acpi_interface_info *next_interface;
+
+	next_interface = acpi_gbl_supported_interfaces;
+	while (next_interface) {
+		if (((next_interface->flags & ACPI_OSI_FEATURE) &&
+		     (action & ACPI_FEATURE_STRINGS)) ||
+		    (!(next_interface->flags & ACPI_OSI_FEATURE) &&
+		     (action & ACPI_VENDOR_STRINGS))) {
+			if (action & ACPI_DISABLE_INTERFACES) {
+
+				/* Mark the interfaces as invalid */
+
+				next_interface->flags |= ACPI_OSI_INVALID;
+			} else {
+				/* Mark the interfaces as valid */
+
+				next_interface->flags &= ~ACPI_OSI_INVALID;
+			}
+		}
+
+		next_interface = next_interface->next;
+	}
+
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_interface
+ *
+ * PARAMETERS:  interface_name      - The interface to find
+ *
+ * RETURN:      struct acpi_interface_info if found. NULL if not found.
+ *
+ * DESCRIPTION: Search for the specified interface name in the global list.
+ *              Caller MUST hold acpi_gbl_osi_mutex
+ *
+ ******************************************************************************/
+
+struct acpi_interface_info *acpi_ut_get_interface(acpi_string interface_name)
+{
+	struct acpi_interface_info *next_interface;
+
+	next_interface = acpi_gbl_supported_interfaces;
+	while (next_interface) {
+		if (!strcmp(interface_name, next_interface->name)) {
+			return (next_interface);
+		}
+
+		next_interface = next_interface->next;
+	}
+
+	return (NULL);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_osi_implementation
+ *
+ * PARAMETERS:  walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *              Integer: TRUE (0) if input string is matched
+ *                       FALSE (-1) if string is not matched
+ *
+ * DESCRIPTION: Implementation of the _OSI predefined control method. When
+ *              an invocation of _OSI is encountered in the system AML,
+ *              control is transferred to this function.
+ *
+ * (August 2016)
+ * Note:  _OSI is now defined to return "Ones" to indicate a match, for
+ * compatibility with other ACPI implementations. On a 32-bit DSDT, Ones
+ * is 0xFFFFFFFF. On a 64-bit DSDT, Ones is 0xFFFFFFFFFFFFFFFF
+ * (ACPI_UINT64_MAX).
+ *
+ * This function always returns ACPI_UINT64_MAX for TRUE, and later code
+ * will truncate this to 32 bits if necessary.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
+{
+	union acpi_operand_object *string_desc;
+	union acpi_operand_object *return_desc;
+	struct acpi_interface_info *interface_info;
+	acpi_interface_handler interface_handler;
+	acpi_status status;
+	u64 return_value;
+
+	ACPI_FUNCTION_TRACE(ut_osi_implementation);
+
+	/* Validate the string input argument (from the AML caller) */
+
+	string_desc = walk_state->arguments[0].object;
+	if (!string_desc || (string_desc->common.type != ACPI_TYPE_STRING)) {
+		return_ACPI_STATUS(AE_TYPE);
+	}
+
+	/* Create a return object */
+
+	return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
+	if (!return_desc) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	/* Default return value is 0, NOT SUPPORTED */
+
+	return_value = 0;
+	status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+	if (ACPI_FAILURE(status)) {
+		acpi_ut_remove_reference(return_desc);
+		return_ACPI_STATUS(status);
+	}
+
+	/* Lookup the interface in the global _OSI list */
+
+	interface_info = acpi_ut_get_interface(string_desc->string.pointer);
+	if (interface_info && !(interface_info->flags & ACPI_OSI_INVALID)) {
+		/*
+		 * The interface is supported.
+		 * Update the osi_data if necessary. We keep track of the latest
+		 * version of Windows that has been requested by the BIOS.
+		 */
+		if (interface_info->value > acpi_gbl_osi_data) {
+			acpi_gbl_osi_data = interface_info->value;
+		}
+
+		return_value = ACPI_UINT64_MAX;
+	}
+
+	acpi_os_release_mutex(acpi_gbl_osi_mutex);
+
+	/*
+	 * Invoke an optional _OSI interface handler. The host OS may wish
+	 * to do some interface-specific handling. For example, warn about
+	 * certain interfaces or override the true/false support value.
+	 */
+	interface_handler = acpi_gbl_interface_handler;
+	if (interface_handler) {
+		if (interface_handler
+		    (string_desc->string.pointer, (u32)return_value)) {
+			return_value = ACPI_UINT64_MAX;
+		}
+	}
+
+	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO,
+			      "ACPI: BIOS _OSI(\"%s\") is %ssupported\n",
+			      string_desc->string.pointer,
+			      return_value == 0 ? "not " : ""));
+
+	/* Complete the return object */
+
+	return_desc->integer.value = return_value;
+	walk_state->return_desc = return_desc;
+	return_ACPI_STATUS(AE_OK);
+}