Commit 433e817a authored by Mike Travis's avatar Mike Travis Committed by Borislav Petkov
Browse files

x86/platform/uv: Add sysfs hubless leaves 



Add uv_sysfs hubless leaves for UV hubless systems.

Signed-off-by: default avatarMike Travis <mike.travis@hpe.com>
Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Reviewed-by: default avatarSteve Wahl <steve.wahl@hpe.com>
Acked-by: default avatarHans de Goede <hdegoede@redhat.com>
Link: https://lkml.kernel.org/r/20201128034227.120869-4-mike.travis@hpe.com
parent 612a0063

drivers/platform/x86/uv_sysfs.c

+50 −2
Original line number Diff line number Diff line
@@ -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 @@ static int __init uv_sysfs_init(void) 
	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();