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x86/platform/uv: Add new uv_sysfs platform driver
Add the uv_sysfs driver to construct a read-only sysfs interface at /sys/firmware/sgi_uv/ to expose information gathered from UV BIOS. This information includes: * UV Hub descriptions, including physical location * Cabling layout between hubs on the fabric * PCI topology, including physical location of PCI cards Together, the information provides a robust physical description of a UV system, useful for correlating to performance data or performing remote support. Signed-off-by: Justin Ernst <justin.ernst@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/20201125175444.279074-4-justin.ernst@hpe.com
This commit is contained in:
Justin Ernst
Borislav Petkov
parent
9a3c425cfd
commit
4fc2cf1f2d
@ -78,6 +78,17 @@ config HUAWEI_WMI
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To compile this driver as a module, choose M here: the module
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will be called huawei-wmi.
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config UV_SYSFS
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tristate "Sysfs structure for UV systems"
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depends on X86_UV
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depends on SYSFS
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help
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This driver supports a sysfs tree describing information about
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UV systems at /sys/firmware/sgi_uv/.
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To compile this driver as a module, choose M here: the module will
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be called uv_sysfs.
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config INTEL_WMI_SBL_FW_UPDATE
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tristate "Intel WMI Slim Bootloader firmware update signaling driver"
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depends on ACPI_WMI
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@ -62,6 +62,9 @@ obj-$(CONFIG_HP_WIRELESS) += hp-wireless.o
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obj-$(CONFIG_HP_WMI) += hp-wmi.o
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obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o
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# Hewlett Packard Enterprise
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obj-$(CONFIG_UV_SYSFS) += uv_sysfs.o
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# IBM Thinkpad and Lenovo
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obj-$(CONFIG_IBM_RTL) += ibm_rtl.o
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obj-$(CONFIG_IDEAPAD_LAPTOP) += ideapad-laptop.o
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862
drivers/platform/x86/uv_sysfs.c
Normal file
862
drivers/platform/x86/uv_sysfs.c
Normal file
@ -0,0 +1,862 @@
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* This file supports the /sys/firmware/sgi_uv topology tree on HPE UV.
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*
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* Copyright (c) 2020 Hewlett Packard Enterprise. All Rights Reserved.
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* Copyright (c) Justin Ernst
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/kobject.h>
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#include <asm/uv/bios.h>
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#include <asm/uv/uv.h>
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#include <asm/uv/uv_hub.h>
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#include <asm/uv/uv_geo.h>
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#define INVALID_CNODE -1
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struct kobject *sgi_uv_kobj;
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struct kset *uv_pcibus_kset;
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struct kset *uv_hubs_kset;
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static struct uv_bios_hub_info *hub_buf;
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static struct uv_bios_port_info **port_buf;
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static struct uv_hub **uv_hubs;
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static struct uv_pci_top_obj **uv_pci_objs;
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static int num_pci_lines;
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static int num_cnodes;
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static int *prev_obj_to_cnode;
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static int uv_bios_obj_cnt;
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static signed short uv_master_nasid = -1;
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static void *uv_biosheap;
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static const char *uv_type_string(void)
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{
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if (is_uv5_hub())
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return "9.0";
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else if (is_uv4a_hub())
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return "7.1";
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else if (is_uv4_hub())
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return "7.0";
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else if (is_uv3_hub())
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return "5.0";
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else if (is_uv2_hub())
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return "3.0";
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else
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return "unknown";
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}
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static int ordinal_to_nasid(int ordinal)
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{
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if (ordinal < num_cnodes && ordinal >= 0)
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return UV_PNODE_TO_NASID(uv_blade_to_pnode(ordinal));
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else
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return -1;
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}
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static union geoid_u cnode_to_geoid(int cnode)
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{
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union geoid_u geoid;
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uv_bios_get_geoinfo(ordinal_to_nasid(cnode), (u64)sizeof(union geoid_u), (u64 *)&geoid);
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return geoid;
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}
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static int location_to_bpos(char *location, int *rack, int *slot, int *blade)
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{
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char type, r, b, h;
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int idb, idh;
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if (sscanf(location, "%c%03d%c%02d%c%2d%c%d",
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&r, rack, &type, slot, &b, &idb, &h, &idh) != 8)
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return -1;
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*blade = idb * 2 + idh;
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return 0;
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}
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static int cache_obj_to_cnode(struct uv_bios_hub_info *obj)
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{
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int cnode;
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union geoid_u geoid;
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int obj_rack, obj_slot, obj_blade;
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int rack, slot, blade;
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if (!obj->f.fields.this_part && !obj->f.fields.is_shared)
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return 0;
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if (location_to_bpos(obj->location, &obj_rack, &obj_slot, &obj_blade))
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return -1;
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for (cnode = 0; cnode < num_cnodes; cnode++) {
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geoid = cnode_to_geoid(cnode);
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rack = geo_rack(geoid);
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slot = geo_slot(geoid);
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blade = geo_blade(geoid);
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if (obj_rack == rack && obj_slot == slot && obj_blade == blade)
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prev_obj_to_cnode[obj->id] = cnode;
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}
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return 0;
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}
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static int get_obj_to_cnode(int obj_id)
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{
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return prev_obj_to_cnode[obj_id];
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}
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struct uv_hub {
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struct kobject kobj;
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struct uv_bios_hub_info *hub_info;
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struct uv_port **ports;
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};
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#define to_uv_hub(kobj_ptr) container_of(kobj_ptr, struct uv_hub, kobj)
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static ssize_t hub_name_show(struct uv_bios_hub_info *hub_info, char *buf)
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{
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return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->name);
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}
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static ssize_t hub_location_show(struct uv_bios_hub_info *hub_info, char *buf)
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{
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return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->location);
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}
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static ssize_t hub_partition_show(struct uv_bios_hub_info *hub_info, char *buf)
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{
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return sprintf(buf, "%d\n", hub_info->f.fields.this_part);
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}
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static ssize_t hub_shared_show(struct uv_bios_hub_info *hub_info, char *buf)
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{
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return sprintf(buf, "%d\n", hub_info->f.fields.is_shared);
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}
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static ssize_t hub_nasid_show(struct uv_bios_hub_info *hub_info, char *buf)
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{
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int cnode = get_obj_to_cnode(hub_info->id);
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return sprintf(buf, "%d\n", ordinal_to_nasid(cnode));
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}
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static ssize_t hub_cnode_show(struct uv_bios_hub_info *hub_info, char *buf)
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{
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return sprintf(buf, "%d\n", get_obj_to_cnode(hub_info->id));
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}
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struct hub_sysfs_entry {
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struct attribute attr;
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ssize_t (*show)(struct uv_bios_hub_info *hub_info, char *buf);
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ssize_t (*store)(struct uv_bios_hub_info *hub_info, const char *buf, size_t sz);
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};
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static struct hub_sysfs_entry name_attribute =
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__ATTR(name, 0444, hub_name_show, NULL);
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static struct hub_sysfs_entry location_attribute =
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__ATTR(location, 0444, hub_location_show, NULL);
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static struct hub_sysfs_entry partition_attribute =
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__ATTR(this_partition, 0444, hub_partition_show, NULL);
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static struct hub_sysfs_entry shared_attribute =
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__ATTR(shared, 0444, hub_shared_show, NULL);
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static struct hub_sysfs_entry nasid_attribute =
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__ATTR(nasid, 0444, hub_nasid_show, NULL);
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static struct hub_sysfs_entry cnode_attribute =
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__ATTR(cnode, 0444, hub_cnode_show, NULL);
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static struct attribute *uv_hub_attrs[] = {
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&name_attribute.attr,
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&location_attribute.attr,
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&partition_attribute.attr,
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&shared_attribute.attr,
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&nasid_attribute.attr,
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&cnode_attribute.attr,
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NULL,
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};
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static void hub_release(struct kobject *kobj)
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{
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struct uv_hub *hub = to_uv_hub(kobj);
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kfree(hub);
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}
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static ssize_t hub_type_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct uv_hub *hub = to_uv_hub(kobj);
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struct uv_bios_hub_info *bios_hub_info = hub->hub_info;
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struct hub_sysfs_entry *entry;
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entry = container_of(attr, struct hub_sysfs_entry, attr);
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if (!entry->show)
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return -EIO;
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return entry->show(bios_hub_info, buf);
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}
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static const struct sysfs_ops hub_sysfs_ops = {
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.show = hub_type_show,
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};
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static struct kobj_type hub_attr_type = {
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.release = hub_release,
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.sysfs_ops = &hub_sysfs_ops,
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.default_attrs = uv_hub_attrs,
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};
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static int uv_hubs_init(void)
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{
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s64 biosr;
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u64 sz;
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int i, ret;
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prev_obj_to_cnode = kmalloc_array(uv_bios_obj_cnt, sizeof(*prev_obj_to_cnode),
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GFP_KERNEL);
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if (!prev_obj_to_cnode)
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return -ENOMEM;
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for (i = 0; i < uv_bios_obj_cnt; i++)
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prev_obj_to_cnode[i] = INVALID_CNODE;
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uv_hubs_kset = kset_create_and_add("hubs", NULL, sgi_uv_kobj);
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if (!uv_hubs_kset) {
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ret = -ENOMEM;
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goto err_hubs_kset;
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}
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sz = uv_bios_obj_cnt * sizeof(*hub_buf);
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hub_buf = kzalloc(sz, GFP_KERNEL);
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if (!hub_buf) {
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ret = -ENOMEM;
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goto err_hub_buf;
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}
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biosr = uv_bios_enum_objs((u64)uv_master_nasid, sz, (u64 *)hub_buf);
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if (biosr) {
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ret = -EINVAL;
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goto err_enum_objs;
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}
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uv_hubs = kcalloc(uv_bios_obj_cnt, sizeof(*uv_hubs), GFP_KERNEL);
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if (!uv_hubs) {
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ret = -ENOMEM;
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goto err_enum_objs;
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}
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for (i = 0; i < uv_bios_obj_cnt; i++) {
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uv_hubs[i] = kzalloc(sizeof(*uv_hubs[i]), GFP_KERNEL);
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if (!uv_hubs[i]) {
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i--;
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goto err_hubs;
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}
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uv_hubs[i]->hub_info = &hub_buf[i];
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cache_obj_to_cnode(uv_hubs[i]->hub_info);
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uv_hubs[i]->kobj.kset = uv_hubs_kset;
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ret = kobject_init_and_add(&uv_hubs[i]->kobj, &hub_attr_type,
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NULL, "hub_%u", hub_buf[i].id);
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if (ret)
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goto err_hubs;
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kobject_uevent(&uv_hubs[i]->kobj, KOBJ_ADD);
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}
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return 0;
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err_hubs:
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for (; i >= 0; i--)
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kobject_put(&uv_hubs[i]->kobj);
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kfree(uv_hubs);
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err_enum_objs:
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kfree(hub_buf);
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err_hub_buf:
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kset_unregister(uv_hubs_kset);
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err_hubs_kset:
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kfree(prev_obj_to_cnode);
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return ret;
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}
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static void uv_hubs_exit(void)
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{
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int i;
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for (i = 0; i < uv_bios_obj_cnt; i++)
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kobject_put(&uv_hubs[i]->kobj);
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kfree(uv_hubs);
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kfree(hub_buf);
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kset_unregister(uv_hubs_kset);
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kfree(prev_obj_to_cnode);
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}
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struct uv_port {
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struct kobject kobj;
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struct uv_bios_port_info *port_info;
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};
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#define to_uv_port(kobj_ptr) container_of(kobj_ptr, struct uv_port, kobj)
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static ssize_t uv_port_conn_hub_show(struct uv_bios_port_info *port, char *buf)
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{
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return sprintf(buf, "%d\n", port->conn_id);
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}
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static ssize_t uv_port_conn_port_show(struct uv_bios_port_info *port, char *buf)
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{
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return sprintf(buf, "%d\n", port->conn_port);
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}
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struct uv_port_sysfs_entry {
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struct attribute attr;
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ssize_t (*show)(struct uv_bios_port_info *port_info, char *buf);
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ssize_t (*store)(struct uv_bios_port_info *port_info, const char *buf, size_t size);
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};
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static struct uv_port_sysfs_entry uv_port_conn_hub_attribute =
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__ATTR(conn_hub, 0444, uv_port_conn_hub_show, NULL);
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static struct uv_port_sysfs_entry uv_port_conn_port_attribute =
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__ATTR(conn_port, 0444, uv_port_conn_port_show, NULL);
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static struct attribute *uv_port_attrs[] = {
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&uv_port_conn_hub_attribute.attr,
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&uv_port_conn_port_attribute.attr,
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NULL,
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};
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static void uv_port_release(struct kobject *kobj)
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{
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struct uv_port *port = to_uv_port(kobj);
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kfree(port);
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}
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static ssize_t uv_port_type_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct uv_port *port = to_uv_port(kobj);
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struct uv_bios_port_info *port_info = port->port_info;
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struct uv_port_sysfs_entry *entry;
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entry = container_of(attr, struct uv_port_sysfs_entry, attr);
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if (!entry->show)
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return -EIO;
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return entry->show(port_info, buf);
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}
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static const struct sysfs_ops uv_port_sysfs_ops = {
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.show = uv_port_type_show,
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};
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static struct kobj_type uv_port_attr_type = {
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.release = uv_port_release,
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.sysfs_ops = &uv_port_sysfs_ops,
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.default_attrs = uv_port_attrs,
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};
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static int uv_ports_init(void)
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{
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s64 biosr;
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int j = 0, k = 0, ret, sz;
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port_buf = kcalloc(uv_bios_obj_cnt, sizeof(*port_buf), GFP_KERNEL);
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if (!port_buf)
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return -ENOMEM;
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for (j = 0; j < uv_bios_obj_cnt; j++) {
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sz = hub_buf[j].ports * sizeof(*port_buf[j]);
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port_buf[j] = kzalloc(sz, GFP_KERNEL);
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if (!port_buf[j]) {
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ret = -ENOMEM;
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j--;
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goto err_port_info;
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}
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biosr = uv_bios_enum_ports((u64)uv_master_nasid, (u64)hub_buf[j].id, sz,
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(u64 *)port_buf[j]);
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if (biosr) {
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ret = -EINVAL;
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goto err_port_info;
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}
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}
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for (j = 0; j < uv_bios_obj_cnt; j++) {
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uv_hubs[j]->ports = kcalloc(hub_buf[j].ports,
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sizeof(*uv_hubs[j]->ports), GFP_KERNEL);
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if (!uv_hubs[j]->ports) {
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ret = -ENOMEM;
|
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j--;
|
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goto err_ports;
|
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}
|
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}
|
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for (j = 0; j < uv_bios_obj_cnt; j++) {
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for (k = 0; k < hub_buf[j].ports; k++) {
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uv_hubs[j]->ports[k] = kzalloc(sizeof(*uv_hubs[j]->ports[k]), GFP_KERNEL);
|
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if (!uv_hubs[j]->ports[k]) {
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ret = -ENOMEM;
|
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k--;
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goto err_kobj_ports;
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}
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uv_hubs[j]->ports[k]->port_info = &port_buf[j][k];
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ret = kobject_init_and_add(&uv_hubs[j]->ports[k]->kobj, &uv_port_attr_type,
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&uv_hubs[j]->kobj, "port_%d", port_buf[j][k].port);
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if (ret)
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goto err_kobj_ports;
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kobject_uevent(&uv_hubs[j]->ports[k]->kobj, KOBJ_ADD);
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}
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}
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return 0;
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|
||||
err_kobj_ports:
|
||||
for (; j >= 0; j--) {
|
||||
for (; k >= 0; k--)
|
||||
kobject_put(&uv_hubs[j]->ports[k]->kobj);
|
||||
if (j > 0)
|
||||
k = hub_buf[j-1].ports - 1;
|
||||
}
|
||||
j = uv_bios_obj_cnt - 1;
|
||||
err_ports:
|
||||
for (; j >= 0; j--)
|
||||
kfree(uv_hubs[j]->ports);
|
||||
j = uv_bios_obj_cnt - 1;
|
||||
err_port_info:
|
||||
for (; j >= 0; j--)
|
||||
kfree(port_buf[j]);
|
||||
kfree(port_buf);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void uv_ports_exit(void)
|
||||
{
|
||||
int j, k;
|
||||
|
||||
for (j = 0; j < uv_bios_obj_cnt; j++) {
|
||||
for (k = hub_buf[j].ports - 1; k >= 0; k--)
|
||||
kobject_put(&uv_hubs[j]->ports[k]->kobj);
|
||||
}
|
||||
for (j = 0; j < uv_bios_obj_cnt; j++) {
|
||||
kfree(uv_hubs[j]->ports);
|
||||
kfree(port_buf[j]);
|
||||
}
|
||||
kfree(port_buf);
|
||||
}
|
||||
|
||||
struct uv_pci_top_obj {
|
||||
struct kobject kobj;
|
||||
char *type;
|
||||
char *location;
|
||||
int iio_stack;
|
||||
char *ppb_addr;
|
||||
int slot;
|
||||
};
|
||||
|
||||
#define to_uv_pci_top_obj(kobj_ptr) container_of(kobj_ptr, struct uv_pci_top_obj, kobj)
|
||||
|
||||
static ssize_t uv_pci_type_show(struct uv_pci_top_obj *top_obj, char *buf)
|
||||
{
|
||||
return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->type);
|
||||
}
|
||||
|
||||
static ssize_t uv_pci_location_show(struct uv_pci_top_obj *top_obj, char *buf)
|
||||
{
|
||||
return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->location);
|
||||
}
|
||||
|
||||
static ssize_t uv_pci_iio_stack_show(struct uv_pci_top_obj *top_obj, char *buf)
|
||||
{
|
||||
return sprintf(buf, "%d\n", top_obj->iio_stack);
|
||||
}
|
||||
|
||||
static ssize_t uv_pci_ppb_addr_show(struct uv_pci_top_obj *top_obj, char *buf)
|
||||
{
|
||||
return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->ppb_addr);
|
||||
}
|
||||
|
||||
static ssize_t uv_pci_slot_show(struct uv_pci_top_obj *top_obj, char *buf)
|
||||
{
|
||||
return sprintf(buf, "%d\n", top_obj->slot);
|
||||
}
|
||||
|
||||
struct uv_pci_top_sysfs_entry {
|
||||
struct attribute attr;
|
||||
ssize_t (*show)(struct uv_pci_top_obj *top_obj, char *buf);
|
||||
ssize_t (*store)(struct uv_pci_top_obj *top_obj, const char *buf, size_t size);
|
||||
};
|
||||
|
||||
static struct uv_pci_top_sysfs_entry uv_pci_type_attribute =
|
||||
__ATTR(type, 0444, uv_pci_type_show, NULL);
|
||||
static struct uv_pci_top_sysfs_entry uv_pci_location_attribute =
|
||||
__ATTR(location, 0444, uv_pci_location_show, NULL);
|
||||
static struct uv_pci_top_sysfs_entry uv_pci_iio_stack_attribute =
|
||||
__ATTR(iio_stack, 0444, uv_pci_iio_stack_show, NULL);
|
||||
static struct uv_pci_top_sysfs_entry uv_pci_ppb_addr_attribute =
|
||||
__ATTR(ppb_addr, 0444, uv_pci_ppb_addr_show, NULL);
|
||||
static struct uv_pci_top_sysfs_entry uv_pci_slot_attribute =
|
||||
__ATTR(slot, 0444, uv_pci_slot_show, NULL);
|
||||
|
||||
static void uv_pci_top_release(struct kobject *kobj)
|
||||
{
|
||||
struct uv_pci_top_obj *top_obj = to_uv_pci_top_obj(kobj);
|
||||
|
||||
kfree(top_obj->type);
|
||||
kfree(top_obj->location);
|
||||
kfree(top_obj->ppb_addr);
|
||||
kfree(top_obj);
|
||||
}
|
||||
|
||||
static ssize_t pci_top_type_show(struct kobject *kobj,
|
||||
struct attribute *attr, char *buf)
|
||||
{
|
||||
struct uv_pci_top_obj *top_obj = to_uv_pci_top_obj(kobj);
|
||||
struct uv_pci_top_sysfs_entry *entry;
|
||||
|
||||
entry = container_of(attr, struct uv_pci_top_sysfs_entry, attr);
|
||||
|
||||
if (!entry->show)
|
||||
return -EIO;
|
||||
|
||||
return entry->show(top_obj, buf);
|
||||
}
|
||||
|
||||
static const struct sysfs_ops uv_pci_top_sysfs_ops = {
|
||||
.show = pci_top_type_show,
|
||||
};
|
||||
|
||||
static struct kobj_type uv_pci_top_attr_type = {
|
||||
.release = uv_pci_top_release,
|
||||
.sysfs_ops = &uv_pci_top_sysfs_ops,
|
||||
};
|
||||
|
||||
static int init_pci_top_obj(struct uv_pci_top_obj *top_obj, char *line)
|
||||
{
|
||||
char *start;
|
||||
char type[11], location[14], ppb_addr[15];
|
||||
int str_cnt, ret;
|
||||
unsigned int tmp_match[2];
|
||||
|
||||
// Minimum line length
|
||||
if (strlen(line) < 36)
|
||||
return -EINVAL;
|
||||
|
||||
//Line must match format "pcibus %4x:%2x" to be valid
|
||||
str_cnt = sscanf(line, "pcibus %4x:%2x", &tmp_match[0], &tmp_match[1]);
|
||||
if (str_cnt < 2)
|
||||
return -EINVAL;
|
||||
|
||||
/* Connect pcibus to segment:bus number with '_'
|
||||
* to concatenate name tokens.
|
||||
* pcibus 0000:00 ... -> pcibus_0000:00 ...
|
||||
*/
|
||||
line[6] = '_';
|
||||
|
||||
/* Null terminate after the concatencated name tokens
|
||||
* to produce kobj name string.
|
||||
*/
|
||||
line[14] = '\0';
|
||||
|
||||
// Use start to index after name tokens string for remainder of line info.
|
||||
start = &line[15];
|
||||
|
||||
top_obj->iio_stack = -1;
|
||||
top_obj->slot = -1;
|
||||
|
||||
/* r001i01b00h0 BASE IO (IIO Stack 0)
|
||||
* r001i01b00h1 PCIe IO (IIO Stack 1)
|
||||
* r001i01b03h1 PCIe SLOT
|
||||
* r001i01b00h0 NODE IO
|
||||
* r001i01b00h0 Riser
|
||||
* (IIO Stack #) may not be present.
|
||||
*/
|
||||
if (start[0] == 'r') {
|
||||
str_cnt = sscanf(start, "%13s %10[^(] %*s %*s %d)",
|
||||
location, type, &top_obj->iio_stack);
|
||||
if (str_cnt < 2)
|
||||
return -EINVAL;
|
||||
top_obj->type = kstrdup(type, GFP_KERNEL);
|
||||
if (!top_obj->type)
|
||||
return -ENOMEM;
|
||||
top_obj->location = kstrdup(location, GFP_KERNEL);
|
||||
if (!top_obj->location) {
|
||||
kfree(top_obj->type);
|
||||
return -ENOMEM;
|
||||
}
|
||||
}
|
||||
/* PPB at 0000:80:00.00 (slot 3)
|
||||
* (slot #) may not be present.
|
||||
*/
|
||||
else if (start[0] == 'P') {
|
||||
str_cnt = sscanf(start, "%10s %*s %14s %*s %d)",
|
||||
type, ppb_addr, &top_obj->slot);
|
||||
if (str_cnt < 2)
|
||||
return -EINVAL;
|
||||
top_obj->type = kstrdup(type, GFP_KERNEL);
|
||||
if (!top_obj->type)
|
||||
return -ENOMEM;
|
||||
top_obj->ppb_addr = kstrdup(ppb_addr, GFP_KERNEL);
|
||||
if (!top_obj->ppb_addr) {
|
||||
kfree(top_obj->type);
|
||||
return -ENOMEM;
|
||||
}
|
||||
} else
|
||||
return -EINVAL;
|
||||
|
||||
top_obj->kobj.kset = uv_pcibus_kset;
|
||||
|
||||
ret = kobject_init_and_add(&top_obj->kobj, &uv_pci_top_attr_type, NULL, "%s", line);
|
||||
if (ret)
|
||||
goto err_add_sysfs;
|
||||
|
||||
if (top_obj->type) {
|
||||
ret = sysfs_create_file(&top_obj->kobj, &uv_pci_type_attribute.attr);
|
||||
if (ret)
|
||||
goto err_add_sysfs;
|
||||
}
|
||||
if (top_obj->location) {
|
||||
ret = sysfs_create_file(&top_obj->kobj, &uv_pci_location_attribute.attr);
|
||||
if (ret)
|
||||
goto err_add_sysfs;
|
||||
}
|
||||
if (top_obj->iio_stack >= 0) {
|
||||
ret = sysfs_create_file(&top_obj->kobj, &uv_pci_iio_stack_attribute.attr);
|
||||
if (ret)
|
||||
goto err_add_sysfs;
|
||||
}
|
||||
if (top_obj->ppb_addr) {
|
||||
ret = sysfs_create_file(&top_obj->kobj, &uv_pci_ppb_addr_attribute.attr);
|
||||
if (ret)
|
||||
goto err_add_sysfs;
|
||||
}
|
||||
if (top_obj->slot >= 0) {
|
||||
ret = sysfs_create_file(&top_obj->kobj, &uv_pci_slot_attribute.attr);
|
||||
if (ret)
|
||||
goto err_add_sysfs;
|
||||
}
|
||||
|
||||
kobject_uevent(&top_obj->kobj, KOBJ_ADD);
|
||||
return 0;
|
||||
|
||||
err_add_sysfs:
|
||||
kobject_put(&top_obj->kobj);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int pci_topology_init(void)
|
||||
{
|
||||
char *pci_top_str, *start, *found, *count;
|
||||
size_t sz;
|
||||
s64 biosr;
|
||||
int l = 0, k = 0;
|
||||
int len, ret;
|
||||
|
||||
uv_pcibus_kset = kset_create_and_add("pcibuses", NULL, sgi_uv_kobj);
|
||||
if (!uv_pcibus_kset)
|
||||
return -ENOMEM;
|
||||
|
||||
for (sz = PAGE_SIZE; sz < 16 * PAGE_SIZE; sz += PAGE_SIZE) {
|
||||
pci_top_str = kmalloc(sz, GFP_KERNEL);
|
||||
if (!pci_top_str) {
|
||||
ret = -ENOMEM;
|
||||
goto err_pci_top_str;
|
||||
}
|
||||
biosr = uv_bios_get_pci_topology((u64)sz, (u64 *)pci_top_str);
|
||||
if (biosr == BIOS_STATUS_SUCCESS) {
|
||||
len = strnlen(pci_top_str, sz);
|
||||
for (count = pci_top_str; count < pci_top_str + len; count++) {
|
||||
if (*count == '\n')
|
||||
l++;
|
||||
}
|
||||
num_pci_lines = l;
|
||||
|
||||
uv_pci_objs = kcalloc(num_pci_lines,
|
||||
sizeof(*uv_pci_objs), GFP_KERNEL);
|
||||
if (!uv_pci_objs) {
|
||||
kfree(pci_top_str);
|
||||
ret = -ENOMEM;
|
||||
goto err_pci_top_str;
|
||||
}
|
||||
start = pci_top_str;
|
||||
while ((found = strsep(&start, "\n")) != NULL) {
|
||||
uv_pci_objs[k] = kzalloc(sizeof(*uv_pci_objs[k]), GFP_KERNEL);
|
||||
if (!uv_pci_objs[k]) {
|
||||
ret = -ENOMEM;
|
||||
goto err_pci_obj;
|
||||
}
|
||||
ret = init_pci_top_obj(uv_pci_objs[k], found);
|
||||
if (ret)
|
||||
goto err_pci_obj;
|
||||
k++;
|
||||
if (k == num_pci_lines)
|
||||
break;
|
||||
}
|
||||
}
|
||||
kfree(pci_top_str);
|
||||
if (biosr == BIOS_STATUS_SUCCESS || biosr == BIOS_STATUS_UNIMPLEMENTED)
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
err_pci_obj:
|
||||
k--;
|
||||
for (; k >= 0; k--)
|
||||
kobject_put(&uv_pci_objs[k]->kobj);
|
||||
kfree(uv_pci_objs);
|
||||
kfree(pci_top_str);
|
||||
err_pci_top_str:
|
||||
kset_unregister(uv_pcibus_kset);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void pci_topology_exit(void)
|
||||
{
|
||||
int k;
|
||||
|
||||
for (k = 0; k < num_pci_lines; k++)
|
||||
kobject_put(&uv_pci_objs[k]->kobj);
|
||||
kset_unregister(uv_pcibus_kset);
|
||||
kfree(uv_pci_objs);
|
||||
}
|
||||
|
||||
static ssize_t partition_id_show(struct kobject *kobj,
|
||||
struct kobj_attribute *attr, char *buf)
|
||||
{
|
||||
return sprintf(buf, "%ld\n", sn_partition_id);
|
||||
}
|
||||
|
||||
static ssize_t coherence_id_show(struct kobject *kobj,
|
||||
struct kobj_attribute *attr, char *buf)
|
||||
{
|
||||
return sprintf(buf, "%ld\n", sn_coherency_id);
|
||||
}
|
||||
|
||||
static ssize_t uv_type_show(struct kobject *kobj,
|
||||
struct kobj_attribute *attr, char *buf)
|
||||
{
|
||||
return scnprintf(buf, PAGE_SIZE, "%s\n", uv_type_string());
|
||||
}
|
||||
|
||||
static struct kobj_attribute partition_id_attr =
|
||||
__ATTR(partition_id, 0444, partition_id_show, NULL);
|
||||
static struct kobj_attribute coherence_id_attr =
|
||||
__ATTR(coherence_id, 0444, coherence_id_show, NULL);
|
||||
static struct kobj_attribute uv_type_attr =
|
||||
__ATTR(uv_type, 0444, uv_type_show, NULL);
|
||||
|
||||
static struct attribute *base_attrs[] = {
|
||||
&partition_id_attr.attr,
|
||||
&coherence_id_attr.attr,
|
||||
&uv_type_attr.attr,
|
||||
NULL,
|
||||
};
|
||||
|
||||
static struct attribute_group base_attr_group = {
|
||||
.attrs = base_attrs
|
||||
};
|
||||
|
||||
static int initial_bios_setup(void)
|
||||
{
|
||||
u64 v;
|
||||
s64 biosr;
|
||||
|
||||
biosr = uv_bios_get_master_nasid((u64)sizeof(uv_master_nasid), (u64 *)&uv_master_nasid);
|
||||
if (biosr)
|
||||
return -EINVAL;
|
||||
|
||||
biosr = uv_bios_get_heapsize((u64)uv_master_nasid, (u64)sizeof(u64), &v);
|
||||
if (biosr)
|
||||
return -EINVAL;
|
||||
|
||||
uv_biosheap = vmalloc(v);
|
||||
if (!uv_biosheap)
|
||||
return -ENOMEM;
|
||||
|
||||
biosr = uv_bios_install_heap((u64)uv_master_nasid, v, (u64 *)uv_biosheap);
|
||||
if (biosr) {
|
||||
vfree(uv_biosheap);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
biosr = uv_bios_obj_count((u64)uv_master_nasid, sizeof(u64), &v);
|
||||
if (biosr) {
|
||||
vfree(uv_biosheap);
|
||||
return -EINVAL;
|
||||
}
|
||||
uv_bios_obj_cnt = (int)v;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init uv_sysfs_init(void)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
if (!is_uv_system())
|
||||
return -ENODEV;
|
||||
|
||||
num_cnodes = uv_num_possible_blades();
|
||||
|
||||
if (!sgi_uv_kobj)
|
||||
sgi_uv_kobj = kobject_create_and_add("sgi_uv", firmware_kobj);
|
||||
if (!sgi_uv_kobj) {
|
||||
pr_warn("kobject_create_and_add sgi_uv failed\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
ret = sysfs_create_group(sgi_uv_kobj, &base_attr_group);
|
||||
if (ret) {
|
||||
pr_warn("sysfs_create_group base_attr_group failed\n");
|
||||
goto err_create_group;
|
||||
}
|
||||
|
||||
ret = initial_bios_setup();
|
||||
if (ret)
|
||||
goto err_bios_setup;
|
||||
|
||||
ret = uv_hubs_init();
|
||||
if (ret)
|
||||
goto err_hubs_init;
|
||||
|
||||
ret = uv_ports_init();
|
||||
if (ret)
|
||||
goto err_ports_init;
|
||||
|
||||
ret = pci_topology_init();
|
||||
if (ret)
|
||||
goto err_pci_init;
|
||||
|
||||
return 0;
|
||||
|
||||
err_pci_init:
|
||||
uv_ports_exit();
|
||||
err_ports_init:
|
||||
uv_hubs_exit();
|
||||
err_hubs_init:
|
||||
vfree(uv_biosheap);
|
||||
err_bios_setup:
|
||||
sysfs_remove_group(sgi_uv_kobj, &base_attr_group);
|
||||
err_create_group:
|
||||
kobject_put(sgi_uv_kobj);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit uv_sysfs_exit(void)
|
||||
{
|
||||
if (!is_uv_system())
|
||||
return;
|
||||
|
||||
pci_topology_exit();
|
||||
uv_ports_exit();
|
||||
uv_hubs_exit();
|
||||
vfree(uv_biosheap);
|
||||
sysfs_remove_group(sgi_uv_kobj, &base_attr_group);
|
||||
kobject_put(sgi_uv_kobj);
|
||||
}
|
||||
|
||||
#ifndef MODULE
|
||||
device_initcall(uv_sysfs_init);
|
||||
#else
|
||||
module_init(uv_sysfs_init);
|
||||
#endif
|
||||
module_exit(uv_sysfs_exit);
|
||||
|
||||
MODULE_AUTHOR("Hewlett Packard Enterprise");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user