Add arch-neutral support for parsing SLIT and SRAT tables (Kochi Takayoshi)

drivers/acpi/Config.in

@@ -31,6 +31,9 @@ if [ "$CONFIG_X86" = "y" ]; then
       tristate     '  Fan'		CONFIG_ACPI_FAN
       tristate     '  Processor'	CONFIG_ACPI_PROCESSOR
       dep_tristate '  Thermal Zone' 	CONFIG_ACPI_THERMAL $CONFIG_ACPI_PROCESSOR
+      if [ "$CONFIG_NUMA" = "y" ]; then
+        bool       '  NUMA support'     CONFIG_ACPI_NUMA $CONFIG_NUMA
+      fi
       tristate     '  Toshiba Laptop Extras'	CONFIG_ACPI_TOSHIBA
       bool         '  Debug Statements'	CONFIG_ACPI_DEBUG
     fi
@@ -58,6 +61,7 @@ if [ "$CONFIG_IA64" = "y" ]; then
     define_bool CONFIG_ACPI_FAN		n
     define_bool CONFIG_ACPI_PROCESSOR	n
     define_bool CONFIG_ACPI_THERMAL	n
+    define_bool CONFIG_ACPI_NUMA	y
     endmenu
   fi
 
@@ -78,6 +82,9 @@ if [ "$CONFIG_IA64" = "y" ]; then
     tristate     '  Fan'		CONFIG_ACPI_FAN
     tristate     '  Processor'		CONFIG_ACPI_PROCESSOR
     dep_tristate '  Thermal Zone'       CONFIG_ACPI_THERMAL $CONFIG_ACPI_PROCESSOR
+    if [ "$CONFIG_NUMA" = "y" ]; then
+      bool       '  NUMA support'       CONFIG_ACPI_NUMA $CONFIG_NUMA
+    fi
     bool         '  Debug Statements' 	CONFIG_ACPI_DEBUG
     endmenu
   fi

drivers/acpi/Makefile

@@ -43,6 +43,7 @@ obj-$(CONFIG_ACPI_POWER)	+= power.o
 obj-$(CONFIG_ACPI_PROCESSOR)	+= processor.o
 obj-$(CONFIG_ACPI_THERMAL)	+= thermal.o
 obj-$(CONFIG_ACPI_SYSTEM)	+= system.o
+obj-$(CONFIG_ACPI_NUMA)		+= numa.o
 obj-$(CONFIG_ACPI_TOSHIBA)	+= toshiba_acpi.o
 
 include $(TOPDIR)/Rules.make

drivers/acpi/numa.c

+/*
+ *  acpi_numa.c - ACPI NUMA support
+ *
+ *  Copyright (C) 2002 Takayoshi Kochi <t-kouchi@cq.jp.nec.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/acpi.h>
+
+#define PREFIX			"ACPI: "
+
+extern int __init acpi_table_parse_madt_family (enum acpi_table_id id, unsigned long madt_size, int entry_id, acpi_madt_entry_handler handler);
+
+void __init
+acpi_table_print_srat_entry (
+	acpi_table_entry_header	*header)
+{
+	if (!header)
+		return;
+
+	switch (header->type) {
+
+	case ACPI_SRAT_PROCESSOR_AFFINITY:
+	{
+		struct acpi_table_processor_affinity *p =
+			(struct acpi_table_processor_affinity*) header;
+		printk(KERN_INFO PREFIX "SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
+		       p->apic_id, p->lsapic_eid, p->proximity_domain,
+		       p->flags.enabled?"enabled":"disabled");
+	}
+		break;
+
+	case ACPI_SRAT_MEMORY_AFFINITY:
+	{
+		struct acpi_table_memory_affinity *p =
+			(struct acpi_table_memory_affinity*) header;
+		printk(KERN_INFO PREFIX "SRAT Memory (0x%08x%08x length 0x%08x%08x type 0x%x) in proximity domain %d %s%s\n",
+		       p->base_addr_hi, p->base_addr_lo, p->length_hi, p->length_lo,
+		       p->memory_type, p->proximity_domain,
+		       p->flags.enabled ? "enabled" : "disabled",
+		       p->flags.hot_pluggable ? " hot-pluggable" : "");
+	}
+		break;
+
+	default:
+		printk(KERN_WARNING PREFIX "Found unsupported SRAT entry (type = 0x%x)\n",
+			header->type);
+		break;
+	}
+}
+
+
+static int __init
+acpi_parse_slit (unsigned long phys_addr, unsigned long size)
+{
+	struct acpi_table_slit	*slit;
+	u32			localities;
+
+	if (!phys_addr || !size)
+		return -EINVAL;
+
+	slit = (struct acpi_table_slit *) __va(phys_addr);
+
+	/* downcast just for %llu vs %lu for i386/ia64  */
+	localities = (u32) slit->localities;
+
+	printk(KERN_INFO PREFIX "SLIT localities %ux%u\n", localities, localities);
+
+	acpi_numa_slit_init(slit);
+
+	return 0;
+}
+
+
+static int __init
+acpi_parse_processor_affinity (acpi_table_entry_header *header)
+{
+	struct acpi_table_processor_affinity *processor_affinity = NULL;
+
+	processor_affinity = (struct acpi_table_processor_affinity*) header;
+	if (!processor_affinity)
+		return -EINVAL;
+
+	acpi_table_print_srat_entry(header);
+
+	/* let architecture-dependent part to do it */
+	acpi_numa_processor_affinity_init(processor_affinity);
+
+	return 0;
+}
+
+
+static int __init
+acpi_parse_memory_affinity (acpi_table_entry_header *header)
+{
+	struct acpi_table_memory_affinity *memory_affinity = NULL;
+
+	memory_affinity = (struct acpi_table_memory_affinity*) header;
+	if (!memory_affinity)
+		return -EINVAL;
+
+	acpi_table_print_srat_entry(header);
+
+	/* let architecture-dependent part to do it */
+	acpi_numa_memory_affinity_init(memory_affinity);
+
+	return 0;
+}
+
+
+static int __init
+acpi_parse_srat (unsigned long phys_addr, unsigned long size)
+{
+	struct acpi_table_srat	*srat = NULL;
+
+	if (!phys_addr || !size)
+		return -EINVAL;
+
+	srat = (struct acpi_table_srat *) __va(phys_addr);
+
+	printk(KERN_INFO PREFIX "SRAT revision %d\n", srat->table_revision);
+
+	return 0;
+}
+
+
+int __init
+acpi_table_parse_srat (
+	enum acpi_srat_entry_id	id,
+	acpi_madt_entry_handler	handler)
+{
+	return acpi_table_parse_madt_family(ACPI_SRAT, sizeof(struct acpi_table_srat),
+					    id, handler);
+}
+
+
+int __init
+acpi_numa_init()
+{
+	int			result;
+
+	/* SRAT: Static Resource Affinity Table */
+	result = acpi_table_parse(ACPI_SRAT, acpi_parse_srat);
+
+	if (result > 0) {
+		result = acpi_table_parse_srat(ACPI_SRAT_PROCESSOR_AFFINITY,
+					       acpi_parse_processor_affinity);
+		result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY,
+					       acpi_parse_memory_affinity);
+	} else {
+		/* FIXME */
+		printk("Warning: acpi_table_parse(ACPI_SRAT) returned %d!\n",result);
+	}
+
+	/* SLIT: System Locality Information Table */
+	result = acpi_table_parse(ACPI_SLIT, acpi_parse_slit);
+	if (result < 1) {
+		/* FIXME */
+		printk("Warning: acpi_table_parse(ACPI_SLIT) returned %d!\n",result);
+	}
+
+	acpi_numa_arch_fixup();
+	return 0;
+}

drivers/acpi/tables.c

@@ -224,11 +224,13 @@ acpi_table_compute_checksum (
 
 
 int __init
-acpi_table_parse_madt (
+acpi_table_parse_madt_family (
 	enum acpi_table_id	id,
+	unsigned long		madt_size,
+	int			entry_id,
 	acpi_madt_entry_handler	handler)
 {
-	struct acpi_table_madt	*madt = NULL;
+	void			*madt = NULL;
 	acpi_table_entry_header	*entry = NULL;
 	unsigned long		count = 0;
 	unsigned long		madt_end = 0;
@@ -240,19 +242,21 @@ acpi_table_parse_madt (
 	/* Locate the MADT (if exists). There should only be one. */
 
 	for (i = 0; i < sdt.count; i++) {
-		if (sdt.entry[i].id != ACPI_APIC)
+		if (sdt.entry[i].id != id)
 			continue;
-		madt = (struct acpi_table_madt *)
+		madt = (void *)
 			__acpi_map_table(sdt.entry[i].pa, sdt.entry[i].size);
 		if (!madt) {
-			printk(KERN_WARNING PREFIX "Unable to map MADT\n");
+			printk(KERN_WARNING PREFIX "Unable to map %s\n",
+			       acpi_table_signatures[id]);
 			return -ENODEV;
 		}
 		break;
 	}
 
 	if (!madt) {
-		printk(KERN_WARNING PREFIX "MADT not present\n");
+		printk(KERN_WARNING PREFIX "%s not present\n",
+		       acpi_table_signatures[id]);
 		return -ENODEV;
 	}
 
@@ -261,10 +265,10 @@ acpi_table_parse_madt (
 	/* Parse all entries looking for a match. */
 
 	entry = (acpi_table_entry_header *)
-		((unsigned long) madt + sizeof(struct acpi_table_madt));
+		((unsigned long) madt + madt_size);
 
 	while (((unsigned long) entry) < madt_end) {
-		if (entry->type == id) {
+		if (entry->type == entry_id) {
 			count++;
 			handler(entry);
 		}
@@ -276,6 +280,16 @@ acpi_table_parse_madt (
 }
 
 
+int __init
+acpi_table_parse_madt (
+	enum acpi_madt_entry_id	id,
+	acpi_madt_entry_handler	handler)
+{
+	return acpi_table_parse_madt_family(ACPI_APIC, sizeof(struct acpi_table_madt),
+					    id, handler);
+}
+
+
 int __init
 acpi_table_parse (
 	enum acpi_table_id	id,

include/linux/acpi.h

@@ -336,12 +336,21 @@ typedef int (*acpi_madt_entry_handler) (acpi_table_entry_header *header);
 char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
 unsigned long acpi_find_rsdp (void);
 int acpi_boot_init (char *cmdline);
+int acpi_numa_init (void);
 
 int acpi_table_init (char *cmdline);
-int acpi_table_parse (enum acpi_table_id, acpi_table_handler);
-int acpi_table_parse_madt (enum acpi_table_id, acpi_madt_entry_handler);
-void acpi_table_print (struct acpi_table_header *, unsigned long);
-void acpi_table_print_madt_entry (acpi_table_entry_header *);
+int acpi_table_parse (enum acpi_table_id id, acpi_table_handler handler);
+int acpi_table_parse_madt (enum acpi_madt_entry_id id, acpi_madt_entry_handler handler);
+int acpi_table_parse_srat (enum acpi_srat_entry_id id, acpi_madt_entry_handler handler);
+void acpi_table_print (struct acpi_table_header *header, unsigned long phys_addr);
+void acpi_table_print_madt_entry (acpi_table_entry_header *madt);
+void acpi_table_print_srat_entry (acpi_table_entry_header *srat);
+
+/* the following four functions are architecture-dependent */
+void acpi_numa_slit_init (struct acpi_table_slit *slit);
+void acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa);
+void acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma);
+void acpi_numa_arch_fixup(void);
 
 extern int acpi_mp_config;