Merge branch 'acpica'

ACPICA update to upstream revision 20180531 (including an important
AML parser fix and updates related to IORT) and a change to start
responding to the "Windows 2017.2" _OSI string.

* acpica:
  ACPICA: Recognize the _OSI string "Windows 2017.2"
  ACPICA: Update version to 20180531
  ACPICA: Interpreter: Begin deprecation of Unload operator
  ACPICA: AML parser: attempt to continue loading table after error
  ACPICA: Debugger: Reduce verbosity for module-level code errors.
  ACPICA: AML Parser: Add debug option to dump parse trees
  ACPICA: Debugger: Add count of namespace nodes after namespace dump
  ACPICA: IORT: Add PMCG node supprt
  ACPICA: IORT: Update for revision D

14 files changed, 187 insertions, 21 deletions

diff --git a/drivers/acpi/acpica/dbnames.c b/drivers/acpi/acpica/dbnames.c
index dc94de91033e..992bd7b92540 100644
--- a/drivers/acpi/acpica/dbnames.c
+++ b/drivers/acpi/acpica/dbnames.c
@@ -322,6 +322,7 @@ acpi_db_walk_and_match_name(acpi_handle obj_handle,
                 acpi_os_printf("Could Not get pathname for object %p\n",
                                obj_handle);
         } else {
+                info.count = 0;
                 info.owner_id = ACPI_OWNER_ID_MAX;
                 info.debug_level = ACPI_UINT32_MAX;
                 info.display_type = ACPI_DISPLAY_SUMMARY | ACPI_DISPLAY_SHORT;
diff --git a/drivers/acpi/acpica/dbobject.c b/drivers/acpi/acpica/dbobject.c
index 58c3253b533a..a1c76bf21122 100644
--- a/drivers/acpi/acpica/dbobject.c
+++ b/drivers/acpi/acpica/dbobject.c
@@ -35,6 +35,15 @@ void
 acpi_db_dump_method_info(acpi_status status, struct acpi_walk_state *walk_state)
 {
         struct acpi_thread_state *thread;
+        struct acpi_namespace_node *node;
+
+        node = walk_state->method_node;
+
+        /* There are no locals or arguments for the module-level code case */
+
+        if (node == acpi_gbl_root_node) {
+                return;
+        }
 
         /* Ignore control codes, they are not errors */
 
@@ -384,8 +393,14 @@ void acpi_db_decode_locals(struct acpi_walk_state *walk_state)
         struct acpi_namespace_node *node;
         u8 display_locals = FALSE;
 
-        obj_desc = walk_state->method_desc;
         node = walk_state->method_node;
+        obj_desc = walk_state->method_desc;
+
+        /* There are no locals for the module-level code case */
+
+        if (node == acpi_gbl_root_node) {
+                return;
+        }
 
         if (!node) {
                 acpi_os_printf
@@ -452,6 +467,12 @@ void acpi_db_decode_arguments(struct acpi_walk_state *walk_state)
         node = walk_state->method_node;
         obj_desc = walk_state->method_desc;
 
+        /* There are no arguments for the module-level code case */
+
+        if (node == acpi_gbl_root_node) {
+                return;
+        }
+
         if (!node) {
                 acpi_os_printf
                     ("No method node (Executing subtree for buffer or opregion)\n");
diff --git a/drivers/acpi/acpica/dsdebug.c b/drivers/acpi/acpica/dsdebug.c
index 70a2fca60306..9d33f0bb2885 100644
--- a/drivers/acpi/acpica/dsdebug.c
+++ b/drivers/acpi/acpica/dsdebug.c
@@ -162,9 +162,15 @@ acpi_ds_dump_method_stack(acpi_status status,
                                 op->common.next = NULL;
 
 #ifdef ACPI_DISASSEMBLER
-                                acpi_os_printf("Failed at ");
-                                acpi_dm_disassemble(next_walk_state, op,
-                                                    ACPI_UINT32_MAX);
+                                if (walk_state->method_node !=
+                                    acpi_gbl_root_node) {
+
+                                        /* More verbose if not module-level code */
+
+                                        acpi_os_printf("Failed at ");
+                                        acpi_dm_disassemble(next_walk_state, op,
+                                                            ACPI_UINT32_MAX);
+                                }
 #endif
                                 op->common.next = next;
                         }
diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index f85c6f3271f6..2373a7492151 100644
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -490,6 +490,17 @@ acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle)
         ACPI_WARNING((AE_INFO, "Received request to unload an ACPI table"));
 
         /*
+         * May 2018: Unload is no longer supported for the following reasons:
+         * 1) A correct implementation on some hosts may not be possible.
+         * 2) Other ACPI implementations do not correctly/fully support it.
+         * 3) It requires host device driver support which does not exist.
+         *    (To properly support namespace unload out from underneath.)
+         * 4) This AML operator has never been seen in the field.
+         */
+        ACPI_EXCEPTION((AE_INFO, AE_NOT_IMPLEMENTED,
+                        "AML Unload operator is not supported"));
+
+        /*
          * Validate the handle
          * Although the handle is partially validated in acpi_ex_reconfiguration()
          * when it calls acpi_ex_resolve_operands(), the handle is more completely
diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c
index 4bdbd1d8431b..90ccffcd770b 100644
--- a/drivers/acpi/acpica/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -170,6 +170,7 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
         }
 
         type = this_node->type;
+        info->count++;
 
         /* Check if the owner matches */
 
@@ -639,6 +640,7 @@ acpi_ns_dump_objects(acpi_object_type type,
                 return;
         }
 
+        info.count = 0;
         info.debug_level = ACPI_LV_TABLES;
         info.owner_id = owner_id;
         info.display_type = display_type;
@@ -649,6 +651,7 @@ acpi_ns_dump_objects(acpi_object_type type,
                                      acpi_ns_dump_one_object, NULL,
                                      (void *)&info, NULL);
 
+        acpi_os_printf("\nNamespace node count: %u\n\n", info.count);
         (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 }
 
diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index 68422afc365f..bc5f05906bd1 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -515,6 +515,22 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
                                 if (ACPI_FAILURE(status)) {
                                         return_ACPI_STATUS(status);
                                 }
+                                if (walk_state->opcode == AML_SCOPE_OP) {
+                                        /*
+                                         * If the scope op fails to parse, skip the body of the
+                                         * scope op because the parse failure indicates that the
+                                         * device may not exist.
+                                         */
+                                        walk_state->parser_state.aml =
+                                            walk_state->aml + 1;
+                                        walk_state->parser_state.aml =
+                                            acpi_ps_get_next_package_end
+                                            (&walk_state->parser_state);
+                                        walk_state->aml =
+                                            walk_state->parser_state.aml;
+                                        ACPI_ERROR((AE_INFO,
+                                                    "Skipping Scope block"));
+                                }
 
                                 continue;
                         }
@@ -557,7 +573,40 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
                                 if (ACPI_FAILURE(status)) {
                                         return_ACPI_STATUS(status);
                                 }
-
+                                if ((walk_state->control_state) &&
+                                    ((walk_state->control_state->control.
+                                      opcode == AML_IF_OP)
+                                     || (walk_state->control_state->control.
+                                         opcode == AML_WHILE_OP))) {
+                                        /*
+                                         * If the if/while op fails to parse, we will skip parsing
+                                         * the body of the op.
+                                         */
+                                        parser_state->aml =
+                                            walk_state->control_state->control.
+                                            aml_predicate_start + 1;
+                                        parser_state->aml =
+                                            acpi_ps_get_next_package_end
+                                            (parser_state);
+                                        walk_state->aml = parser_state->aml;
+
+                                        ACPI_ERROR((AE_INFO,
+                                                    "Skipping While/If block"));
+                                        if (*walk_state->aml == AML_ELSE_OP) {
+                                                ACPI_ERROR((AE_INFO,
+                                                            "Skipping Else block"));
+                                                walk_state->parser_state.aml =
+                                                    walk_state->aml + 1;
+                                                walk_state->parser_state.aml =
+                                                    acpi_ps_get_next_package_end
+                                                    (parser_state);
+                                                walk_state->aml =
+                                                    parser_state->aml;
+                                        }
+                                        ACPI_FREE(acpi_ut_pop_generic_state
+                                                  (&walk_state->control_state));
+                                }
+                                op = NULL;
                                 continue;
                         }
                 }
diff --git a/drivers/acpi/acpica/psobject.c b/drivers/acpi/acpica/psobject.c
index 7d9d0151ee54..3138e7a00da8 100644
--- a/drivers/acpi/acpica/psobject.c
+++ b/drivers/acpi/acpica/psobject.c
@@ -12,6 +12,7 @@
 #include "acparser.h"
 #include "amlcode.h"
 #include "acconvert.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("psobject")
@@ -549,6 +550,21 @@ acpi_ps_complete_op(struct acpi_walk_state *walk_state,
 
                 do {
                         if (*op) {
+                                /*
+                                 * These Opcodes need to be removed from the namespace because they
+                                 * get created even if these opcodes cannot be created due to
+                                 * errors.
+                                 */
+                                if (((*op)->common.aml_opcode == AML_REGION_OP)
+                                    || ((*op)->common.aml_opcode ==
+                                        AML_DATA_REGION_OP)) {
+                                        acpi_ns_delete_children((*op)->common.
+                                                                node);
+                                        acpi_ns_remove_node((*op)->common.node);
+                                        (*op)->common.node = NULL;
+                                        acpi_ps_delete_parse_tree(*op);
+                                }
+
                                 status2 =
                                     acpi_ps_complete_this_op(walk_state, *op);
                                 if (ACPI_FAILURE(status2)) {
@@ -574,6 +590,20 @@ acpi_ps_complete_op(struct acpi_walk_state *walk_state,
 #endif
                 walk_state->prev_op = NULL;
                 walk_state->prev_arg_types = walk_state->arg_types;
+
+                if (walk_state->parse_flags & ACPI_PARSE_MODULE_LEVEL) {
+                        /*
+                         * There was something that went wrong while executing code at the
+                         * module-level. We need to skip parsing whatever caused the
+                         * error and keep going. One runtime error during the table load
+                         * should not cause the entire table to not be loaded. This is
+                         * because there could be correct AML beyond the parts that caused
+                         * the runtime error.
+                         */
+                        ACPI_ERROR((AE_INFO,
+                                    "Ignore error and continue table load"));
+                        return_ACPI_STATUS(AE_OK);
+                }
                 return_ACPI_STATUS(status);
         }
 
diff --git a/drivers/acpi/acpica/pswalk.c b/drivers/acpi/acpica/pswalk.c
index e0a442b8648b..bd6af8c87d48 100644
--- a/drivers/acpi/acpica/pswalk.c
+++ b/drivers/acpi/acpica/pswalk.c
@@ -25,22 +25,48 @@ ACPI_MODULE_NAME("pswalk")
  * DESCRIPTION: Delete a portion of or an entire parse tree.
  *
  ******************************************************************************/
+#include "amlcode.h"
 void acpi_ps_delete_parse_tree(union acpi_parse_object *subtree_root)
 {
         union acpi_parse_object *op = subtree_root;
         union acpi_parse_object *next = NULL;
         union acpi_parse_object *parent = NULL;
+        u32 level = 0;
 
         ACPI_FUNCTION_TRACE_PTR(ps_delete_parse_tree, subtree_root);
 
+        ACPI_DEBUG_PRINT((ACPI_DB_PARSE_TREES, " root %p\n", subtree_root));
+
         /* Visit all nodes in the subtree */
 
         while (op) {
-
-                /* Check if we are not ascending */
-
                 if (op != parent) {
 
+                        /* This is the descending case */
+
+                        if (ACPI_IS_DEBUG_ENABLED
+                            (ACPI_LV_PARSE_TREES, _COMPONENT)) {
+
+                                /* This debug option will print the entire parse tree */
+
+                                acpi_os_printf("      %*.s%s %p", (level * 4),
+                                               " ",
+                                               acpi_ps_get_opcode_name(op->
+                                                                       common.
+                                                                       aml_opcode),
+                                               op);
+
+                                if (op->named.aml_opcode == AML_INT_NAMEPATH_OP) {
+                                        acpi_os_printf("  %4.4s",
+                                                       op->common.value.string);
+                                }
+                                if (op->named.aml_opcode == AML_STRING_OP) {
+                                        acpi_os_printf("  %s",
+                                                       op->common.value.string);
+                                }
+                                acpi_os_printf("\n");
+                        }
+
                         /* Look for an argument or child of the current op */
 
                         next = acpi_ps_get_arg(op, 0);
@@ -49,6 +75,7 @@ void acpi_ps_delete_parse_tree(union acpi_parse_object *subtree_root)
                                 /* Still going downward in tree (Op is not completed yet) */
 
                                 op = next;
+                                level++;
                                 continue;
                         }
                 }
@@ -69,6 +96,7 @@ void acpi_ps_delete_parse_tree(union acpi_parse_object *subtree_root)
                 if (next) {
                         op = next;
                 } else {
+                        level--;
                         op = parent;
                 }
         }
diff --git a/drivers/acpi/acpica/uterror.c b/drivers/acpi/acpica/uterror.c
index 12d4a0f6b8d2..5a64ddaed8a3 100644
--- a/drivers/acpi/acpica/uterror.c
+++ b/drivers/acpi/acpica/uterror.c
@@ -182,20 +182,20 @@ acpi_ut_prefixed_namespace_error(const char *module_name,
         switch (lookup_status) {
         case AE_ALREADY_EXISTS:
 
-                acpi_os_printf(ACPI_MSG_BIOS_ERROR);
+                acpi_os_printf("\n" ACPI_MSG_BIOS_ERROR);
                 message = "Failure creating";
                 break;
 
         case AE_NOT_FOUND:
 
-                acpi_os_printf(ACPI_MSG_BIOS_ERROR);
-                message = "Failure looking up";
+                acpi_os_printf("\n" ACPI_MSG_BIOS_ERROR);
+                message = "Could not resolve";
                 break;
 
         default:
 
-                acpi_os_printf(ACPI_MSG_ERROR);
-                message = "Failure looking up";
+                acpi_os_printf("\n" ACPI_MSG_ERROR);
+                message = "Failure resolving";
                 break;
         }
 
diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c
index 1b415fa90cf8..64b63c81994b 100644
--- a/drivers/acpi/acpica/utosi.c
+++ b/drivers/acpi/acpica/utosi.c
@@ -69,6 +69,7 @@ static struct acpi_interface_info acpi_default_supported_interfaces[] = {
         {"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 */
 
         /* Feature Group Strings */
 
diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h
index 0a6c5bd92256..3a26aa7ead23 100644
--- a/include/acpi/acoutput.h
+++ b/include/acpi/acoutput.h
@@ -80,7 +80,8 @@
 #define ACPI_LV_ALLOCATIONS         0x00100000
 #define ACPI_LV_FUNCTIONS           0x00200000
 #define ACPI_LV_OPTIMIZATIONS       0x00400000
-#define ACPI_LV_VERBOSITY2          0x00700000 | ACPI_LV_VERBOSITY1
+#define ACPI_LV_PARSE_TREES         0x00800000
+#define ACPI_LV_VERBOSITY2          0x00F00000 | ACPI_LV_VERBOSITY1
 #define ACPI_LV_ALL                 ACPI_LV_VERBOSITY2
 
 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
@@ -131,6 +132,7 @@
 #define ACPI_DB_TABLES              ACPI_DEBUG_LEVEL (ACPI_LV_TABLES)
 #define ACPI_DB_FUNCTIONS           ACPI_DEBUG_LEVEL (ACPI_LV_FUNCTIONS)
 #define ACPI_DB_OPTIMIZATIONS       ACPI_DEBUG_LEVEL (ACPI_LV_OPTIMIZATIONS)
+#define ACPI_DB_PARSE_TREES         ACPI_DEBUG_LEVEL (ACPI_LV_PARSE_TREES)
 #define ACPI_DB_VALUES              ACPI_DEBUG_LEVEL (ACPI_LV_VALUES)
 #define ACPI_DB_OBJECTS             ACPI_DEBUG_LEVEL (ACPI_LV_OBJECTS)
 #define ACPI_DB_ALLOCATIONS         ACPI_DEBUG_LEVEL (ACPI_LV_ALLOCATIONS)
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 77d71bd1be39..48d84f0d9547 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -12,7 +12,7 @@
 
 /* Current ACPICA subsystem version in YYYYMMDD format */
 
-#define ACPI_CA_VERSION                 0x20180508
+#define ACPI_CA_VERSION                 0x20180531
 
 #include <acpi/acconfig.h>
 #include <acpi/actypes.h>
diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 876012da8e6e..c50ef7e6b942 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -67,7 +67,7 @@
  * IORT - IO Remapping Table
  *
  * Conforms to "IO Remapping Table System Software on ARM Platforms",
- * Document number: ARM DEN 0049C, May 2017
+ * Document number: ARM DEN 0049D, March 2018
  *
  ******************************************************************************/
 
@@ -98,7 +98,8 @@ enum acpi_iort_node_type {
         ACPI_IORT_NODE_NAMED_COMPONENT = 0x01,
         ACPI_IORT_NODE_PCI_ROOT_COMPLEX = 0x02,
         ACPI_IORT_NODE_SMMU = 0x03,
-        ACPI_IORT_NODE_SMMU_V3 = 0x04
+        ACPI_IORT_NODE_SMMU_V3 = 0x04,
+        ACPI_IORT_NODE_PMCG = 0x05
 };
 
 struct acpi_iort_id_mapping {
@@ -152,10 +153,17 @@ struct acpi_iort_named_component {
         char device_name[1];    /* Path of namespace object */
 };
 
+/* Masks for Flags field above */
+
+#define ACPI_IORT_NC_STALL_SUPPORTED    (1)
+#define ACPI_IORT_NC_PASID_BITS         (31<<1)
+
 struct acpi_iort_root_complex {
         u64 memory_properties;  /* Memory access properties */
         u32 ats_attribute;
         u32 pci_segment_number;
+        u8 memory_address_limit;        /* Memory address size limit */
+        u8 reserved[3];         /* Reserved, must be zero */
 };
 
 /* Values for ats_attribute field above */
@@ -209,9 +217,7 @@ struct acpi_iort_smmu_v3 {
         u32 pri_gsiv;
         u32 gerr_gsiv;
         u32 sync_gsiv;
-        u8 pxm;
-        u8 reserved1;
-        u16 reserved2;
+        u32 pxm;
         u32 id_mapping_index;
 };
 
@@ -224,9 +230,16 @@ struct acpi_iort_smmu_v3 {
 /* Masks for Flags field above */
 
 #define ACPI_IORT_SMMU_V3_COHACC_OVERRIDE   (1)
-#define ACPI_IORT_SMMU_V3_HTTU_OVERRIDE     (1<<1)
+#define ACPI_IORT_SMMU_V3_HTTU_OVERRIDE     (3<<1)
 #define ACPI_IORT_SMMU_V3_PXM_VALID         (1<<3)
 
+struct acpi_iort_pmcg {
+        u64 page0_base_address;
+        u32 overflow_gsiv;
+        u32 node_reference;
+        u64 page1_base_address;
+};
+
 /*******************************************************************************
  *
  * IVRS - I/O Virtualization Reporting Structure
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 2b1bafa197c0..66ceb12ebc63 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -1272,6 +1272,7 @@ typedef enum {
 #define ACPI_OSI_WIN_10                 0x0D
 #define ACPI_OSI_WIN_10_RS1             0x0E
 #define ACPI_OSI_WIN_10_RS2             0x0F
+#define ACPI_OSI_WIN_10_RS3             0x10
 
 /* Definitions of getopt */