CVS commit: src/sys/dev/acpi

[Jared D. McNeill]

Module Name:    src
Committed By:   jmcneill
Date:           Fri Oct 12 21:20:54 UTC 2018

Modified Files:
        src/sys/dev/acpi: acpi.c acpivar.h

Log Message:
Add helper functions for walking GTDT subtables.


To generate a diff of this commit:
cvs rdiff -u -r1.272 -r1.273 src/sys/dev/acpi/acpi.c
cvs rdiff -u -r1.75 -r1.76 src/sys/dev/acpi/acpivar.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.


Modified files:

Index: src/sys/dev/acpi/acpi.c
diff -u src/sys/dev/acpi/acpi.c:1.272 src/sys/dev/acpi/acpi.c:1.273
--- src/sys/dev/acpi/acpi.c:1.272	Thu Oct 11 22:58:36 2018
+++ src/sys/dev/acpi/acpi.c	Fri Oct 12 21:20:54 2018
@@ -1,4 +1,4 @@
-/*	$NetBSD: acpi.c,v 1.272 2018/10/11 22:58:36 jmcneill Exp $	*/
+/*	$NetBSD: acpi.c,v 1.273 2018/10/12 21:20:54 jmcneill Exp $	*/
 
 /*-
  * Copyright (c) 2003, 2007 The NetBSD Foundation, Inc.
@@ -100,7 +100,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.272 2018/10/11 22:58:36 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.273 2018/10/12 21:20:54 jmcneill Exp $");
 
 #include "pci.h"
 #include "opt_acpi.h"
@@ -148,6 +148,7 @@ static uint64_t		 acpi_root_pointer;
 extern kmutex_t		 acpi_interrupt_list_mtx;
 static ACPI_HANDLE	 acpi_scopes[4];
 ACPI_TABLE_HEADER	*madt_header;
+ACPI_TABLE_HEADER	*gtdt_header;
 
 /*
  * This structure provides a context for the ACPI
@@ -1708,6 +1709,28 @@ acpi_madt_unmap(void)
 	madt_header = NULL;
 }
 
+ACPI_STATUS
+acpi_gtdt_map(void)
+{
+	ACPI_STATUS  rv;
+
+	if (gtdt_header != NULL)
+		return AE_ALREADY_EXISTS;
+
+	rv = AcpiGetTable(ACPI_SIG_GTDT, 1, &gtdt_header);
+
+	if (ACPI_FAILURE(rv))
+		return rv;
+
+	return AE_OK;
+}
+
+void
+acpi_gtdt_unmap(void)
+{
+	gtdt_header = NULL;
+}
+
 /*
  * XXX: Refactor to be a generic function that walks tables.
  */
@@ -1731,6 +1754,26 @@ acpi_madt_walk(ACPI_STATUS (*func)(ACPI_
 	}
 }
 
+void
+acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux)
+{
+	ACPI_GTDT_HEADER *hdrp;
+	char *gtdtend, *where;
+
+	gtdtend = (char *)gtdt_header + gtdt_header->Length;
+	where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT);
+
+	while (where < gtdtend) {
+
+		hdrp = (ACPI_GTDT_HEADER *)where;
+
+		if (ACPI_FAILURE(func(hdrp, aux)))
+			break;
+
+		where += hdrp->Length;
+	}
+}
+
 /*
  * Miscellaneous.
  */

Index: src/sys/dev/acpi/acpivar.h
diff -u src/sys/dev/acpi/acpivar.h:1.75 src/sys/dev/acpi/acpivar.h:1.76
--- src/sys/dev/acpi/acpivar.h:1.75	Sat May  5 17:16:23 2018
+++ src/sys/dev/acpi/acpivar.h	Fri Oct 12 21:20:54 2018
@@ -1,4 +1,4 @@
-/*	$NetBSD: acpivar.h,v 1.75 2018/05/05 17:16:23 christos Exp $	*/
+/*	$NetBSD: acpivar.h,v 1.76 2018/10/12 21:20:54 jmcneill Exp $	*/
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -351,6 +351,14 @@ void			acpi_madt_walk(ACPI_STATUS (*)(AC
 				       void *), void *);
 
 /*
+ * GTDT.
+ */
+ACPI_STATUS		acpi_gtdt_map(void);
+void			acpi_gtdt_unmap(void);
+void			acpi_gtdt_walk(ACPI_STATUS (*)(ACPI_GTDT_HEADER *,
+				       void *), void *);
+
+/*
  * Quirk handling.
  */
 struct acpi_quirk {