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x86: Add sysfs entries for UV v4 

Create /sys/firmware/sgi_uv sysfs entries for partition_id and coherence_id.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Russ Anderson 2008-10-03 11:59:50 -05:00 committed by Ingo Molnar
parent 922402f15a
commit fc8c2d763b
3 changed files with 74 additions and 1 deletions
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2
arch/x86/kernel/Makefile
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@ -108,7 +108,7 @@ obj-$(CONFIG_MICROCODE) += microcode.o
# 64 bit specific files
ifeq ($(CONFIG_X86_64),y)
obj-y += genapic_64.o genapic_flat_64.o genx2apic_uv_x.o tlb_uv.o
obj-y += bios_uv.o uv_irq.o
obj-y += bios_uv.o uv_irq.o uv_sysfs.o
obj-y += genx2apic_cluster.o
obj-y += genx2apic_phys.o
obj-$(CONFIG_X86_PM_TIMER) += pmtimer_64.o

72
arch/x86/kernel/uv_sysfs.c Normal file
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@ -0,0 +1,72 @@
/*
* This file supports the /sys/firmware/sgi_uv interfaces for SGI UV.
*
* 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
*
* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) Russ Anderson
*/
#include <linux/sysdev.h>
#include <asm/uv/bios.h>
struct kobject *sgi_uv_kobj;
static ssize_t partition_id_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%ld\n", sn_partition_id);
}
static ssize_t coherence_id_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%ld\n", partition_coherence_id());
}
static struct kobj_attribute partition_id_attr =
__ATTR(partition_id, S_IRUGO, partition_id_show, NULL);
static struct kobj_attribute coherence_id_attr =
__ATTR(coherence_id, S_IRUGO, coherence_id_show, NULL);
static int __init sgi_uv_sysfs_init(void)
{
unsigned long ret;
if (!sgi_uv_kobj)
sgi_uv_kobj = kobject_create_and_add("sgi_uv", firmware_kobj);
if (!sgi_uv_kobj) {
printk(KERN_WARNING "kobject_create_and_add sgi_uv failed \n");
return -EINVAL;
}
ret = sysfs_create_file(sgi_uv_kobj, &partition_id_attr.attr);
if (ret) {
printk(KERN_WARNING "sysfs_create_file partition_id failed \n");
return ret;
}
ret = sysfs_create_file(sgi_uv_kobj, &coherence_id_attr.attr);
if (ret) {
printk(KERN_WARNING "sysfs_create_file coherence_id failed \n");
return ret;
}
return 0;
}
device_initcall(sgi_uv_sysfs_init);

1
include/asm-x86/uv/bios.h
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@ -89,5 +89,6 @@ extern long uv_coherency_id;
extern long uv_region_size;
#define partition_coherence_id() (uv_coherency_id)
extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */
#endif /* ASM_X86__UV__BIOS_H */