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x86/platform/uv: Add sysfs hubless leaves

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Add uv_sysfs hubless leaves for UV hubless systems.

Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Steve Wahl <steve.wahl@hpe.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lkml.kernel.org/r/20201128034227.120869-4-mike.travis@hpe.com
This commit is contained in:
Mike Travis 2020-11-27 21:42:25 -06:00 committed by Borislav Petkov
parent 612a0063c9
commit 433e817ae1
1 changed files with 50 additions and 2 deletions
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52
drivers/platform/x86/uv_sysfs.c
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@ -44,6 +44,8 @@ static const char *uv_type_string(void)
return "5.0";
else if (is_uv2_hub())
return "3.0";
else if (uv_get_hubless_system())
return "0.1";
else
return "unknown";
}
@ -748,6 +750,12 @@ static ssize_t uv_hub_type_show(struct kobject *kobj,
return scnprintf(buf, PAGE_SIZE, "0x%x\n", uv_hub_type());
}
static ssize_t uv_hubless_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return scnprintf(buf, PAGE_SIZE, "0x%x\n", uv_get_hubless_system());
}
static struct kobj_attribute partition_id_attr =
__ATTR(partition_id, 0444, partition_id_show, NULL);
static struct kobj_attribute coherence_id_attr =
@ -758,6 +766,8 @@ static struct kobj_attribute uv_archtype_attr =
__ATTR(archtype, 0444, uv_archtype_show, NULL);
static struct kobj_attribute uv_hub_type_attr =
__ATTR(hub_type, 0444, uv_hub_type_show, NULL);
static struct kobj_attribute uv_hubless_attr =
__ATTR(hubless, 0444, uv_hubless_show, NULL);
static struct attribute *base_attrs[] = {
&partition_id_attr.attr,
@ -805,11 +815,36 @@ static int initial_bios_setup(void)
return 0;
}
static struct attribute *hubless_base_attrs[] = {
&partition_id_attr.attr,
&uv_type_attr.attr,
&uv_archtype_attr.attr,
&uv_hubless_attr.attr,
NULL,
};
static struct attribute_group hubless_base_attr_group = {
.attrs = hubless_base_attrs
};
static int __init uv_sysfs_hubless_init(void)
{
int ret;
ret = sysfs_create_group(sgi_uv_kobj, &hubless_base_attr_group);
if (ret) {
pr_warn("sysfs_create_group hubless_base_attr_group failed\n");
kobject_put(sgi_uv_kobj);
}
return ret;
}
static int __init uv_sysfs_init(void)
{
int ret = 0;
if (!is_uv_system())
if (!is_uv_system() && !uv_get_hubless_system())
return -ENODEV;
num_cnodes = uv_num_possible_blades();
@ -820,6 +855,10 @@ static int __init uv_sysfs_init(void)
pr_warn("kobject_create_and_add sgi_uv failed\n");
return -EINVAL;
}
if (uv_get_hubless_system())
return uv_sysfs_hubless_init();
ret = sysfs_create_group(sgi_uv_kobj, &base_attr_group);
if (ret) {
pr_warn("sysfs_create_group base_attr_group failed\n");
@ -857,10 +896,19 @@ err_create_group:
return ret;
}
static void __exit uv_sysfs_hubless_exit(void)
{
sysfs_remove_group(sgi_uv_kobj, &hubless_base_attr_group);
kobject_put(sgi_uv_kobj);
}
static void __exit uv_sysfs_exit(void)
{
if (!is_uv_system())
if (!is_uv_system()) {
if (uv_get_hubless_system())
uv_sysfs_hubless_exit();
return;
}
pci_topology_exit();
uv_ports_exit();