https://github.com/torvalds/linux
Tip revision: 6465e260f48790807eef06b583b38ca9789b6072 authored by Linus Torvalds on 24 September 2023, 21:31:13 UTC
Linux 6.6-rc3
Linux 6.6-rc3
Tip revision: 6465e26
uv_sysfs.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* This file supports the /sys/firmware/sgi_uv topology tree on HPE UV.
*
* Copyright (c) 2020 Hewlett Packard Enterprise. All Rights Reserved.
* Copyright (c) Justin Ernst
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/kobject.h>
#include <asm/uv/bios.h>
#include <asm/uv/uv.h>
#include <asm/uv/uv_hub.h>
#include <asm/uv/uv_geo.h>
#define INVALID_CNODE -1
struct kobject *sgi_uv_kobj;
static struct kset *uv_pcibus_kset;
static struct kset *uv_hubs_kset;
static struct uv_bios_hub_info *hub_buf;
static struct uv_bios_port_info **port_buf;
static struct uv_hub **uv_hubs;
static struct uv_pci_top_obj **uv_pci_objs;
static int num_pci_lines;
static int num_cnodes;
static int *prev_obj_to_cnode;
static int uv_bios_obj_cnt;
static signed short uv_master_nasid = -1;
static void *uv_biosheap;
static const char *uv_type_string(void)
{
if (is_uv5_hub())
return "9.0";
else if (is_uv4a_hub())
return "7.1";
else if (is_uv4_hub())
return "7.0";
else if (is_uv3_hub())
return "5.0";
else if (is_uv2_hub())
return "3.0";
else if (uv_get_hubless_system())
return "0.1";
else
return "unknown";
}
static int ordinal_to_nasid(int ordinal)
{
if (ordinal < num_cnodes && ordinal >= 0)
return UV_PNODE_TO_NASID(uv_blade_to_pnode(ordinal));
else
return -1;
}
static union geoid_u cnode_to_geoid(int cnode)
{
union geoid_u geoid;
uv_bios_get_geoinfo(ordinal_to_nasid(cnode), (u64)sizeof(union geoid_u), (u64 *)&geoid);
return geoid;
}
static int location_to_bpos(char *location, int *rack, int *slot, int *blade)
{
char type, r, b, h;
int idb, idh;
if (sscanf(location, "%c%03d%c%02d%c%2d%c%d",
&r, rack, &type, slot, &b, &idb, &h, &idh) != 8)
return -1;
*blade = idb * 2 + idh;
return 0;
}
static int cache_obj_to_cnode(struct uv_bios_hub_info *obj)
{
int cnode;
union geoid_u geoid;
int obj_rack, obj_slot, obj_blade;
int rack, slot, blade;
if (!obj->f.fields.this_part && !obj->f.fields.is_shared)
return 0;
if (location_to_bpos(obj->location, &obj_rack, &obj_slot, &obj_blade))
return -1;
for (cnode = 0; cnode < num_cnodes; cnode++) {
geoid = cnode_to_geoid(cnode);
rack = geo_rack(geoid);
slot = geo_slot(geoid);
blade = geo_blade(geoid);
if (obj_rack == rack && obj_slot == slot && obj_blade == blade)
prev_obj_to_cnode[obj->id] = cnode;
}
return 0;
}
static int get_obj_to_cnode(int obj_id)
{
return prev_obj_to_cnode[obj_id];
}
struct uv_hub {
struct kobject kobj;
struct uv_bios_hub_info *hub_info;
struct uv_port **ports;
};
#define to_uv_hub(kobj_ptr) container_of(kobj_ptr, struct uv_hub, kobj)
static ssize_t hub_name_show(struct uv_bios_hub_info *hub_info, char *buf)
{
return sysfs_emit(buf, "%s\n", hub_info->name);
}
static ssize_t hub_location_show(struct uv_bios_hub_info *hub_info, char *buf)
{
return sysfs_emit(buf, "%s\n", hub_info->location);
}
static ssize_t hub_partition_show(struct uv_bios_hub_info *hub_info, char *buf)
{
return sprintf(buf, "%d\n", hub_info->f.fields.this_part);
}
static ssize_t hub_shared_show(struct uv_bios_hub_info *hub_info, char *buf)
{
return sprintf(buf, "%d\n", hub_info->f.fields.is_shared);
}
static ssize_t hub_nasid_show(struct uv_bios_hub_info *hub_info, char *buf)
{
int cnode = get_obj_to_cnode(hub_info->id);
return sprintf(buf, "%d\n", ordinal_to_nasid(cnode));
}
static ssize_t hub_cnode_show(struct uv_bios_hub_info *hub_info, char *buf)
{
return sprintf(buf, "%d\n", get_obj_to_cnode(hub_info->id));
}
struct hub_sysfs_entry {
struct attribute attr;
ssize_t (*show)(struct uv_bios_hub_info *hub_info, char *buf);
ssize_t (*store)(struct uv_bios_hub_info *hub_info, const char *buf, size_t sz);
};
static struct hub_sysfs_entry name_attribute =
__ATTR(name, 0444, hub_name_show, NULL);
static struct hub_sysfs_entry location_attribute =
__ATTR(location, 0444, hub_location_show, NULL);
static struct hub_sysfs_entry partition_attribute =
__ATTR(this_partition, 0444, hub_partition_show, NULL);
static struct hub_sysfs_entry shared_attribute =
__ATTR(shared, 0444, hub_shared_show, NULL);
static struct hub_sysfs_entry nasid_attribute =
__ATTR(nasid, 0444, hub_nasid_show, NULL);
static struct hub_sysfs_entry cnode_attribute =
__ATTR(cnode, 0444, hub_cnode_show, NULL);
static struct attribute *uv_hub_attrs[] = {
&name_attribute.attr,
&location_attribute.attr,
&partition_attribute.attr,
&shared_attribute.attr,
&nasid_attribute.attr,
&cnode_attribute.attr,
NULL,
};
ATTRIBUTE_GROUPS(uv_hub);
static void hub_release(struct kobject *kobj)
{
struct uv_hub *hub = to_uv_hub(kobj);
kfree(hub);
}
static ssize_t hub_type_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct uv_hub *hub = to_uv_hub(kobj);
struct uv_bios_hub_info *bios_hub_info = hub->hub_info;
struct hub_sysfs_entry *entry;
entry = container_of(attr, struct hub_sysfs_entry, attr);
if (!entry->show)
return -EIO;
return entry->show(bios_hub_info, buf);
}
static const struct sysfs_ops hub_sysfs_ops = {
.show = hub_type_show,
};
static const struct kobj_type hub_attr_type = {
.release = hub_release,
.sysfs_ops = &hub_sysfs_ops,
.default_groups = uv_hub_groups,
};
static int uv_hubs_init(void)
{
s64 biosr;
u64 sz;
int i, ret;
prev_obj_to_cnode = kmalloc_array(uv_bios_obj_cnt, sizeof(*prev_obj_to_cnode),
GFP_KERNEL);
if (!prev_obj_to_cnode)
return -ENOMEM;
for (i = 0; i < uv_bios_obj_cnt; i++)
prev_obj_to_cnode[i] = INVALID_CNODE;
uv_hubs_kset = kset_create_and_add("hubs", NULL, sgi_uv_kobj);
if (!uv_hubs_kset) {
ret = -ENOMEM;
goto err_hubs_kset;
}
sz = uv_bios_obj_cnt * sizeof(*hub_buf);
hub_buf = kzalloc(sz, GFP_KERNEL);
if (!hub_buf) {
ret = -ENOMEM;
goto err_hub_buf;
}
biosr = uv_bios_enum_objs((u64)uv_master_nasid, sz, (u64 *)hub_buf);
if (biosr) {
ret = -EINVAL;
goto err_enum_objs;
}
uv_hubs = kcalloc(uv_bios_obj_cnt, sizeof(*uv_hubs), GFP_KERNEL);
if (!uv_hubs) {
ret = -ENOMEM;
goto err_enum_objs;
}
for (i = 0; i < uv_bios_obj_cnt; i++) {
uv_hubs[i] = kzalloc(sizeof(*uv_hubs[i]), GFP_KERNEL);
if (!uv_hubs[i]) {
i--;
ret = -ENOMEM;
goto err_hubs;
}
uv_hubs[i]->hub_info = &hub_buf[i];
cache_obj_to_cnode(uv_hubs[i]->hub_info);
uv_hubs[i]->kobj.kset = uv_hubs_kset;
ret = kobject_init_and_add(&uv_hubs[i]->kobj, &hub_attr_type,
NULL, "hub_%u", hub_buf[i].id);
if (ret)
goto err_hubs;
kobject_uevent(&uv_hubs[i]->kobj, KOBJ_ADD);
}
return 0;
err_hubs:
for (; i >= 0; i--)
kobject_put(&uv_hubs[i]->kobj);
kfree(uv_hubs);
err_enum_objs:
kfree(hub_buf);
err_hub_buf:
kset_unregister(uv_hubs_kset);
err_hubs_kset:
kfree(prev_obj_to_cnode);
return ret;
}
static void uv_hubs_exit(void)
{
int i;
for (i = 0; i < uv_bios_obj_cnt; i++)
kobject_put(&uv_hubs[i]->kobj);
kfree(uv_hubs);
kfree(hub_buf);
kset_unregister(uv_hubs_kset);
kfree(prev_obj_to_cnode);
}
struct uv_port {
struct kobject kobj;
struct uv_bios_port_info *port_info;
};
#define to_uv_port(kobj_ptr) container_of(kobj_ptr, struct uv_port, kobj)
static ssize_t uv_port_conn_hub_show(struct uv_bios_port_info *port, char *buf)
{
return sprintf(buf, "%d\n", port->conn_id);
}
static ssize_t uv_port_conn_port_show(struct uv_bios_port_info *port, char *buf)
{
return sprintf(buf, "%d\n", port->conn_port);
}
struct uv_port_sysfs_entry {
struct attribute attr;
ssize_t (*show)(struct uv_bios_port_info *port_info, char *buf);
ssize_t (*store)(struct uv_bios_port_info *port_info, const char *buf, size_t size);
};
static struct uv_port_sysfs_entry uv_port_conn_hub_attribute =
__ATTR(conn_hub, 0444, uv_port_conn_hub_show, NULL);
static struct uv_port_sysfs_entry uv_port_conn_port_attribute =
__ATTR(conn_port, 0444, uv_port_conn_port_show, NULL);
static struct attribute *uv_port_attrs[] = {
&uv_port_conn_hub_attribute.attr,
&uv_port_conn_port_attribute.attr,
NULL,
};
ATTRIBUTE_GROUPS(uv_port);
static void uv_port_release(struct kobject *kobj)
{
struct uv_port *port = to_uv_port(kobj);
kfree(port);
}
static ssize_t uv_port_type_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct uv_port *port = to_uv_port(kobj);
struct uv_bios_port_info *port_info = port->port_info;
struct uv_port_sysfs_entry *entry;
entry = container_of(attr, struct uv_port_sysfs_entry, attr);
if (!entry->show)
return -EIO;
return entry->show(port_info, buf);
}
static const struct sysfs_ops uv_port_sysfs_ops = {
.show = uv_port_type_show,
};
static const struct kobj_type uv_port_attr_type = {
.release = uv_port_release,
.sysfs_ops = &uv_port_sysfs_ops,
.default_groups = uv_port_groups,
};
static int uv_ports_init(void)
{
s64 biosr;
int j = 0, k = 0, ret, sz;
port_buf = kcalloc(uv_bios_obj_cnt, sizeof(*port_buf), GFP_KERNEL);
if (!port_buf)
return -ENOMEM;
for (j = 0; j < uv_bios_obj_cnt; j++) {
sz = hub_buf[j].ports * sizeof(*port_buf[j]);
port_buf[j] = kzalloc(sz, GFP_KERNEL);
if (!port_buf[j]) {
ret = -ENOMEM;
j--;
goto err_port_info;
}
biosr = uv_bios_enum_ports((u64)uv_master_nasid, (u64)hub_buf[j].id, sz,
(u64 *)port_buf[j]);
if (biosr) {
ret = -EINVAL;
goto err_port_info;
}
}
for (j = 0; j < uv_bios_obj_cnt; j++) {
uv_hubs[j]->ports = kcalloc(hub_buf[j].ports,
sizeof(*uv_hubs[j]->ports), GFP_KERNEL);
if (!uv_hubs[j]->ports) {
ret = -ENOMEM;
j--;
goto err_ports;
}
}
for (j = 0; j < uv_bios_obj_cnt; j++) {
for (k = 0; k < hub_buf[j].ports; k++) {
uv_hubs[j]->ports[k] = kzalloc(sizeof(*uv_hubs[j]->ports[k]), GFP_KERNEL);
if (!uv_hubs[j]->ports[k]) {
ret = -ENOMEM;
k--;
goto err_kobj_ports;
}
uv_hubs[j]->ports[k]->port_info = &port_buf[j][k];
ret = kobject_init_and_add(&uv_hubs[j]->ports[k]->kobj, &uv_port_attr_type,
&uv_hubs[j]->kobj, "port_%d", port_buf[j][k].port);
if (ret)
goto err_kobj_ports;
kobject_uevent(&uv_hubs[j]->ports[k]->kobj, KOBJ_ADD);
}
}
return 0;
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 sysfs_emit(buf, "%s\n", top_obj->type);
}
static ssize_t uv_pci_location_show(struct uv_pci_top_obj *top_obj, char *buf)
{
return sysfs_emit(buf, "%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 sysfs_emit(buf, "%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 const 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 sysfs_emit(buf, "%s\n", uv_type_string());
}
static ssize_t uv_archtype_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return uv_get_archtype(buf, PAGE_SIZE);
}
static ssize_t uv_hub_type_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sysfs_emit(buf, "0x%x\n", uv_hub_type());
}
static ssize_t uv_hubless_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sysfs_emit(buf, "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 =
__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 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,
&coherence_id_attr.attr,
&uv_type_attr.attr,
&uv_archtype_attr.attr,
&uv_hub_type_attr.attr,
NULL,
};
static const 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 struct attribute *hubless_base_attrs[] = {
&partition_id_attr.attr,
&uv_type_attr.attr,
&uv_archtype_attr.attr,
&uv_hubless_attr.attr,
NULL,
};
static const 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() && !uv_get_hubless_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;
}
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");
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_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 (uv_get_hubless_system())
uv_sysfs_hubless_exit();
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");