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ipl.c
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ipl.c
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// SPDX-License-Identifier: GPL-2.0
/*
* ipl/reipl/dump support for Linux on s390.
*
* Copyright IBM Corp. 2005, 2012
* Author(s): Michael Holzheu <holzheu@de.ibm.com>
* Volker Sameske <sameske@de.ibm.com>
*/
#include <linux/types.h>
#include <linux/export.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/panic_notifier.h>
#include <linux/reboot.h>
#include <linux/ctype.h>
#include <linux/fs.h>
#include <linux/gfp.h>
#include <linux/crash_dump.h>
#include <linux/debug_locks.h>
#include <asm/asm-extable.h>
#include <asm/diag.h>
#include <asm/ipl.h>
#include <asm/smp.h>
#include <asm/setup.h>
#include <asm/cpcmd.h>
#include <asm/ebcdic.h>
#include <asm/sclp.h>
#include <asm/checksum.h>
#include <asm/debug.h>
#include <asm/abs_lowcore.h>
#include <asm/os_info.h>
#include <asm/sections.h>
#include <asm/boot_data.h>
#include "entry.h"
#define IPL_PARM_BLOCK_VERSION 0
#define IPL_UNKNOWN_STR "unknown"
#define IPL_CCW_STR "ccw"
#define IPL_FCP_STR "fcp"
#define IPL_FCP_DUMP_STR "fcp_dump"
#define IPL_NVME_STR "nvme"
#define IPL_NVME_DUMP_STR "nvme_dump"
#define IPL_NSS_STR "nss"
#define DUMP_CCW_STR "ccw"
#define DUMP_FCP_STR "fcp"
#define DUMP_NVME_STR "nvme"
#define DUMP_NONE_STR "none"
/*
* Four shutdown trigger types are supported:
* - panic
* - halt
* - power off
* - reipl
* - restart
*/
#define ON_PANIC_STR "on_panic"
#define ON_HALT_STR "on_halt"
#define ON_POFF_STR "on_poff"
#define ON_REIPL_STR "on_reboot"
#define ON_RESTART_STR "on_restart"
struct shutdown_action;
struct shutdown_trigger {
char *name;
struct shutdown_action *action;
};
/*
* The following shutdown action types are supported:
*/
#define SHUTDOWN_ACTION_IPL_STR "ipl"
#define SHUTDOWN_ACTION_REIPL_STR "reipl"
#define SHUTDOWN_ACTION_DUMP_STR "dump"
#define SHUTDOWN_ACTION_VMCMD_STR "vmcmd"
#define SHUTDOWN_ACTION_STOP_STR "stop"
#define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl"
struct shutdown_action {
char *name;
void (*fn) (struct shutdown_trigger *trigger);
int (*init) (void);
int init_rc;
};
static char *ipl_type_str(enum ipl_type type)
{
switch (type) {
case IPL_TYPE_CCW:
return IPL_CCW_STR;
case IPL_TYPE_FCP:
return IPL_FCP_STR;
case IPL_TYPE_FCP_DUMP:
return IPL_FCP_DUMP_STR;
case IPL_TYPE_NSS:
return IPL_NSS_STR;
case IPL_TYPE_NVME:
return IPL_NVME_STR;
case IPL_TYPE_NVME_DUMP:
return IPL_NVME_DUMP_STR;
case IPL_TYPE_UNKNOWN:
default:
return IPL_UNKNOWN_STR;
}
}
enum dump_type {
DUMP_TYPE_NONE = 1,
DUMP_TYPE_CCW = 2,
DUMP_TYPE_FCP = 4,
DUMP_TYPE_NVME = 8,
};
static char *dump_type_str(enum dump_type type)
{
switch (type) {
case DUMP_TYPE_NONE:
return DUMP_NONE_STR;
case DUMP_TYPE_CCW:
return DUMP_CCW_STR;
case DUMP_TYPE_FCP:
return DUMP_FCP_STR;
case DUMP_TYPE_NVME:
return DUMP_NVME_STR;
default:
return NULL;
}
}
int __bootdata_preserved(ipl_block_valid);
struct ipl_parameter_block __bootdata_preserved(ipl_block);
int __bootdata_preserved(ipl_secure_flag);
unsigned long __bootdata_preserved(ipl_cert_list_addr);
unsigned long __bootdata_preserved(ipl_cert_list_size);
unsigned long __bootdata(early_ipl_comp_list_addr);
unsigned long __bootdata(early_ipl_comp_list_size);
static int reipl_capabilities = IPL_TYPE_UNKNOWN;
static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN;
static struct ipl_parameter_block *reipl_block_fcp;
static struct ipl_parameter_block *reipl_block_nvme;
static struct ipl_parameter_block *reipl_block_ccw;
static struct ipl_parameter_block *reipl_block_nss;
static struct ipl_parameter_block *reipl_block_actual;
static int dump_capabilities = DUMP_TYPE_NONE;
static enum dump_type dump_type = DUMP_TYPE_NONE;
static struct ipl_parameter_block *dump_block_fcp;
static struct ipl_parameter_block *dump_block_nvme;
static struct ipl_parameter_block *dump_block_ccw;
static struct sclp_ipl_info sclp_ipl_info;
static bool reipl_nvme_clear;
static bool reipl_fcp_clear;
static bool reipl_ccw_clear;
static inline int __diag308(unsigned long subcode, void *addr)
{
union register_pair r1;
r1.even = (unsigned long) addr;
r1.odd = 0;
asm volatile(
" diag %[r1],%[subcode],0x308\n"
"0: nopr %%r7\n"
EX_TABLE(0b,0b)
: [r1] "+&d" (r1.pair)
: [subcode] "d" (subcode)
: "cc", "memory");
return r1.odd;
}
int diag308(unsigned long subcode, void *addr)
{
diag_stat_inc(DIAG_STAT_X308);
return __diag308(subcode, addr);
}
EXPORT_SYMBOL_GPL(diag308);
/* SYSFS */
#define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \
static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \
struct kobj_attribute *attr, \
char *page) \
{ \
return scnprintf(page, PAGE_SIZE, _format, ##args); \
}
#define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \
static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
struct kobj_attribute *attr, \
const char *buf, size_t len) \
{ \
unsigned long long ssid, devno; \
\
if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \
return -EINVAL; \
\
if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \
return -EINVAL; \
\
_ipl_blk.ssid = ssid; \
_ipl_blk.devno = devno; \
return len; \
}
#define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \
IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \
_ipl_blk.ssid, _ipl_blk.devno); \
IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \
static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
__ATTR(_name, (S_IRUGO | S_IWUSR), \
sys_##_prefix##_##_name##_show, \
sys_##_prefix##_##_name##_store) \
#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \
IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \
static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
__ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL)
#define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \
IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \
static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
struct kobj_attribute *attr, \
const char *buf, size_t len) \
{ \
unsigned long long value; \
if (sscanf(buf, _fmt_in, &value) != 1) \
return -EINVAL; \
_value = value; \
return len; \
} \
static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
__ATTR(_name,(S_IRUGO | S_IWUSR), \
sys_##_prefix##_##_name##_show, \
sys_##_prefix##_##_name##_store)
#define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\
IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \
static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
struct kobj_attribute *attr, \
const char *buf, size_t len) \
{ \
strncpy(_value, buf, sizeof(_value) - 1); \
strim(_value); \
return len; \
} \
static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
__ATTR(_name,(S_IRUGO | S_IWUSR), \
sys_##_prefix##_##_name##_show, \
sys_##_prefix##_##_name##_store)
/*
* ipl section
*/
static __init enum ipl_type get_ipl_type(void)
{
if (!ipl_block_valid)
return IPL_TYPE_UNKNOWN;
switch (ipl_block.pb0_hdr.pbt) {
case IPL_PBT_CCW:
return IPL_TYPE_CCW;
case IPL_PBT_FCP:
if (ipl_block.fcp.opt == IPL_PB0_FCP_OPT_DUMP)
return IPL_TYPE_FCP_DUMP;
else
return IPL_TYPE_FCP;
case IPL_PBT_NVME:
if (ipl_block.nvme.opt == IPL_PB0_NVME_OPT_DUMP)
return IPL_TYPE_NVME_DUMP;
else
return IPL_TYPE_NVME;
}
return IPL_TYPE_UNKNOWN;
}
struct ipl_info ipl_info;
EXPORT_SYMBOL_GPL(ipl_info);
static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr,
char *page)
{
return sprintf(page, "%s\n", ipl_type_str(ipl_info.type));
}
static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type);
static ssize_t ipl_secure_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return sprintf(page, "%i\n", !!ipl_secure_flag);
}
static struct kobj_attribute sys_ipl_secure_attr =
__ATTR(secure, 0444, ipl_secure_show, NULL);
static ssize_t ipl_has_secure_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return sprintf(page, "%i\n", !!sclp.has_sipl);
}
static struct kobj_attribute sys_ipl_has_secure_attr =
__ATTR(has_secure, 0444, ipl_has_secure_show, NULL);
static ssize_t ipl_vm_parm_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
char parm[DIAG308_VMPARM_SIZE + 1] = {};
if (ipl_block_valid && (ipl_block.pb0_hdr.pbt == IPL_PBT_CCW))
ipl_block_get_ascii_vmparm(parm, sizeof(parm), &ipl_block);
return sprintf(page, "%s\n", parm);
}
static struct kobj_attribute sys_ipl_vm_parm_attr =
__ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL);
static ssize_t sys_ipl_device_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
switch (ipl_info.type) {
case IPL_TYPE_CCW:
return sprintf(page, "0.%x.%04x\n", ipl_block.ccw.ssid,
ipl_block.ccw.devno);
case IPL_TYPE_FCP:
case IPL_TYPE_FCP_DUMP:
return sprintf(page, "0.0.%04x\n", ipl_block.fcp.devno);
case IPL_TYPE_NVME:
case IPL_TYPE_NVME_DUMP:
return sprintf(page, "%08ux\n", ipl_block.nvme.fid);
default:
return 0;
}
}
static struct kobj_attribute sys_ipl_device_attr =
__ATTR(device, S_IRUGO, sys_ipl_device_show, NULL);
static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
return memory_read_from_buffer(buf, count, &off, &ipl_block,
ipl_block.hdr.len);
}
static struct bin_attribute ipl_parameter_attr =
__BIN_ATTR(binary_parameter, S_IRUGO, ipl_parameter_read, NULL,
PAGE_SIZE);
static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
unsigned int size = ipl_block.fcp.scp_data_len;
void *scp_data = &ipl_block.fcp.scp_data;
return memory_read_from_buffer(buf, count, &off, scp_data, size);
}
static ssize_t ipl_nvme_scp_data_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
unsigned int size = ipl_block.nvme.scp_data_len;
void *scp_data = &ipl_block.nvme.scp_data;
return memory_read_from_buffer(buf, count, &off, scp_data, size);
}
static struct bin_attribute ipl_scp_data_attr =
__BIN_ATTR(scp_data, S_IRUGO, ipl_scp_data_read, NULL, PAGE_SIZE);
static struct bin_attribute ipl_nvme_scp_data_attr =
__BIN_ATTR(scp_data, S_IRUGO, ipl_nvme_scp_data_read, NULL, PAGE_SIZE);
static struct bin_attribute *ipl_fcp_bin_attrs[] = {
&ipl_parameter_attr,
&ipl_scp_data_attr,
NULL,
};
static struct bin_attribute *ipl_nvme_bin_attrs[] = {
&ipl_parameter_attr,
&ipl_nvme_scp_data_attr,
NULL,
};
/* FCP ipl device attributes */
DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n",
(unsigned long long)ipl_block.fcp.wwpn);
DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n",
(unsigned long long)ipl_block.fcp.lun);
DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n",
(unsigned long long)ipl_block.fcp.bootprog);
DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n",
(unsigned long long)ipl_block.fcp.br_lba);
/* NVMe ipl device attributes */
DEFINE_IPL_ATTR_RO(ipl_nvme, fid, "0x%08llx\n",
(unsigned long long)ipl_block.nvme.fid);
DEFINE_IPL_ATTR_RO(ipl_nvme, nsid, "0x%08llx\n",
(unsigned long long)ipl_block.nvme.nsid);
DEFINE_IPL_ATTR_RO(ipl_nvme, bootprog, "%lld\n",
(unsigned long long)ipl_block.nvme.bootprog);
DEFINE_IPL_ATTR_RO(ipl_nvme, br_lba, "%lld\n",
(unsigned long long)ipl_block.nvme.br_lba);
static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
char loadparm[LOADPARM_LEN + 1] = {};
if (!sclp_ipl_info.is_valid)
return sprintf(page, "#unknown#\n");
memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN);
EBCASC(loadparm, LOADPARM_LEN);
strim(loadparm);
return sprintf(page, "%s\n", loadparm);
}
static struct kobj_attribute sys_ipl_ccw_loadparm_attr =
__ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL);
static struct attribute *ipl_fcp_attrs[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_device_attr.attr,
&sys_ipl_fcp_wwpn_attr.attr,
&sys_ipl_fcp_lun_attr.attr,
&sys_ipl_fcp_bootprog_attr.attr,
&sys_ipl_fcp_br_lba_attr.attr,
&sys_ipl_ccw_loadparm_attr.attr,
&sys_ipl_secure_attr.attr,
&sys_ipl_has_secure_attr.attr,
NULL,
};
static struct attribute_group ipl_fcp_attr_group = {
.attrs = ipl_fcp_attrs,
.bin_attrs = ipl_fcp_bin_attrs,
};
static struct attribute *ipl_nvme_attrs[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_nvme_fid_attr.attr,
&sys_ipl_nvme_nsid_attr.attr,
&sys_ipl_nvme_bootprog_attr.attr,
&sys_ipl_nvme_br_lba_attr.attr,
&sys_ipl_ccw_loadparm_attr.attr,
&sys_ipl_secure_attr.attr,
&sys_ipl_has_secure_attr.attr,
NULL,
};
static struct attribute_group ipl_nvme_attr_group = {
.attrs = ipl_nvme_attrs,
.bin_attrs = ipl_nvme_bin_attrs,
};
/* CCW ipl device attributes */
static struct attribute *ipl_ccw_attrs_vm[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_device_attr.attr,
&sys_ipl_ccw_loadparm_attr.attr,
&sys_ipl_vm_parm_attr.attr,
&sys_ipl_secure_attr.attr,
&sys_ipl_has_secure_attr.attr,
NULL,
};
static struct attribute *ipl_ccw_attrs_lpar[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_device_attr.attr,
&sys_ipl_ccw_loadparm_attr.attr,
&sys_ipl_secure_attr.attr,
&sys_ipl_has_secure_attr.attr,
NULL,
};
static struct attribute_group ipl_ccw_attr_group_vm = {
.attrs = ipl_ccw_attrs_vm,
};
static struct attribute_group ipl_ccw_attr_group_lpar = {
.attrs = ipl_ccw_attrs_lpar
};
/* UNKNOWN ipl device attributes */
static struct attribute *ipl_unknown_attrs[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_secure_attr.attr,
&sys_ipl_has_secure_attr.attr,
NULL,
};
static struct attribute_group ipl_unknown_attr_group = {
.attrs = ipl_unknown_attrs,
};
static struct kset *ipl_kset;
static void __ipl_run(void *unused)
{
__bpon();
diag308(DIAG308_LOAD_CLEAR, NULL);
}
static void ipl_run(struct shutdown_trigger *trigger)
{
smp_call_ipl_cpu(__ipl_run, NULL);
}
static int __init ipl_init(void)
{
int rc;
ipl_kset = kset_create_and_add("ipl", NULL, firmware_kobj);
if (!ipl_kset) {
rc = -ENOMEM;
goto out;
}
switch (ipl_info.type) {
case IPL_TYPE_CCW:
if (MACHINE_IS_VM)
rc = sysfs_create_group(&ipl_kset->kobj,
&ipl_ccw_attr_group_vm);
else
rc = sysfs_create_group(&ipl_kset->kobj,
&ipl_ccw_attr_group_lpar);
break;
case IPL_TYPE_FCP:
case IPL_TYPE_FCP_DUMP:
rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group);
break;
case IPL_TYPE_NVME:
case IPL_TYPE_NVME_DUMP:
rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nvme_attr_group);
break;
default:
rc = sysfs_create_group(&ipl_kset->kobj,
&ipl_unknown_attr_group);
break;
}
out:
if (rc)
panic("ipl_init failed: rc = %i\n", rc);
return 0;
}
static struct shutdown_action __refdata ipl_action = {
.name = SHUTDOWN_ACTION_IPL_STR,
.fn = ipl_run,
.init = ipl_init,
};
/*
* reipl shutdown action: Reboot Linux on shutdown.
*/
/* VM IPL PARM attributes */
static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb,
char *page)
{
char vmparm[DIAG308_VMPARM_SIZE + 1] = {};
ipl_block_get_ascii_vmparm(vmparm, sizeof(vmparm), ipb);
return sprintf(page, "%s\n", vmparm);
}
static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb,
size_t vmparm_max,
const char *buf, size_t len)
{
int i, ip_len;
/* ignore trailing newline */
ip_len = len;
if ((len > 0) && (buf[len - 1] == '\n'))
ip_len--;
if (ip_len > vmparm_max)
return -EINVAL;
/* parm is used to store kernel options, check for common chars */
for (i = 0; i < ip_len; i++)
if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i])))
return -EINVAL;
memset(ipb->ccw.vm_parm, 0, DIAG308_VMPARM_SIZE);
ipb->ccw.vm_parm_len = ip_len;
if (ip_len > 0) {
ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP;
memcpy(ipb->ccw.vm_parm, buf, ip_len);
ASCEBC(ipb->ccw.vm_parm, ip_len);
} else {
ipb->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_VP;
}
return len;
}
/* NSS wrapper */
static ssize_t reipl_nss_vmparm_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return reipl_generic_vmparm_show(reipl_block_nss, page);
}
static ssize_t reipl_nss_vmparm_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t len)
{
return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len);
}
/* CCW wrapper */
static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return reipl_generic_vmparm_show(reipl_block_ccw, page);
}
static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t len)
{
return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len);
}
static struct kobj_attribute sys_reipl_nss_vmparm_attr =
__ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show,
reipl_nss_vmparm_store);
static struct kobj_attribute sys_reipl_ccw_vmparm_attr =
__ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show,
reipl_ccw_vmparm_store);
/* FCP reipl device attributes */
static ssize_t reipl_fcp_scpdata_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
size_t size = reipl_block_fcp->fcp.scp_data_len;
void *scp_data = reipl_block_fcp->fcp.scp_data;
return memory_read_from_buffer(buf, count, &off, scp_data, size);
}
static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
size_t scpdata_len = count;
size_t padding;
if (off)
return -EINVAL;
memcpy(reipl_block_fcp->fcp.scp_data, buf, count);
if (scpdata_len % 8) {
padding = 8 - (scpdata_len % 8);
memset(reipl_block_fcp->fcp.scp_data + scpdata_len,
0, padding);
scpdata_len += padding;
}
reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN + scpdata_len;
reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN + scpdata_len;
reipl_block_fcp->fcp.scp_data_len = scpdata_len;
return count;
}
static struct bin_attribute sys_reipl_fcp_scp_data_attr =
__BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_fcp_scpdata_read,
reipl_fcp_scpdata_write, DIAG308_SCPDATA_SIZE);
static struct bin_attribute *reipl_fcp_bin_attrs[] = {
&sys_reipl_fcp_scp_data_attr,
NULL,
};
DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n",
reipl_block_fcp->fcp.wwpn);
DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n",
reipl_block_fcp->fcp.lun);
DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n",
reipl_block_fcp->fcp.bootprog);
DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n",
reipl_block_fcp->fcp.br_lba);
DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
reipl_block_fcp->fcp.devno);
static void reipl_get_ascii_loadparm(char *loadparm,
struct ipl_parameter_block *ibp)
{
memcpy(loadparm, ibp->common.loadparm, LOADPARM_LEN);
EBCASC(loadparm, LOADPARM_LEN);
loadparm[LOADPARM_LEN] = 0;
strim(loadparm);
}
static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb,
char *page)
{
char buf[LOADPARM_LEN + 1];
reipl_get_ascii_loadparm(buf, ipb);
return sprintf(page, "%s\n", buf);
}
static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb,
const char *buf, size_t len)
{
int i, lp_len;
/* ignore trailing newline */
lp_len = len;
if ((len > 0) && (buf[len - 1] == '\n'))
lp_len--;
/* loadparm can have max 8 characters and must not start with a blank */
if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' ')))
return -EINVAL;
/* loadparm can only contain "a-z,A-Z,0-9,SP,." */
for (i = 0; i < lp_len; i++) {
if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') ||
(buf[i] == '.'))
continue;
return -EINVAL;
}
/* initialize loadparm with blanks */
memset(ipb->common.loadparm, ' ', LOADPARM_LEN);
/* copy and convert to ebcdic */
memcpy(ipb->common.loadparm, buf, lp_len);
ASCEBC(ipb->common.loadparm, LOADPARM_LEN);
ipb->common.flags |= IPL_PB0_FLAG_LOADPARM;
return len;
}
/* FCP wrapper */
static ssize_t reipl_fcp_loadparm_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return reipl_generic_loadparm_show(reipl_block_fcp, page);
}
static ssize_t reipl_fcp_loadparm_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t len)
{
return reipl_generic_loadparm_store(reipl_block_fcp, buf, len);
}
static struct kobj_attribute sys_reipl_fcp_loadparm_attr =
__ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_fcp_loadparm_show,
reipl_fcp_loadparm_store);
static ssize_t reipl_fcp_clear_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return sprintf(page, "%u\n", reipl_fcp_clear);
}
static ssize_t reipl_fcp_clear_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t len)
{
if (strtobool(buf, &reipl_fcp_clear) < 0)
return -EINVAL;
return len;
}
static struct attribute *reipl_fcp_attrs[] = {
&sys_reipl_fcp_device_attr.attr,
&sys_reipl_fcp_wwpn_attr.attr,
&sys_reipl_fcp_lun_attr.attr,
&sys_reipl_fcp_bootprog_attr.attr,
&sys_reipl_fcp_br_lba_attr.attr,
&sys_reipl_fcp_loadparm_attr.attr,
NULL,
};
static struct attribute_group reipl_fcp_attr_group = {
.attrs = reipl_fcp_attrs,
.bin_attrs = reipl_fcp_bin_attrs,
};
static struct kobj_attribute sys_reipl_fcp_clear_attr =
__ATTR(clear, 0644, reipl_fcp_clear_show, reipl_fcp_clear_store);
/* NVME reipl device attributes */
static ssize_t reipl_nvme_scpdata_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
size_t size = reipl_block_nvme->nvme.scp_data_len;
void *scp_data = reipl_block_nvme->nvme.scp_data;
return memory_read_from_buffer(buf, count, &off, scp_data, size);
}
static ssize_t reipl_nvme_scpdata_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
size_t scpdata_len = count;
size_t padding;
if (off)
return -EINVAL;
memcpy(reipl_block_nvme->nvme.scp_data, buf, count);
if (scpdata_len % 8) {
padding = 8 - (scpdata_len % 8);
memset(reipl_block_nvme->nvme.scp_data + scpdata_len,
0, padding);
scpdata_len += padding;
}
reipl_block_nvme->hdr.len = IPL_BP_FCP_LEN + scpdata_len;
reipl_block_nvme->nvme.len = IPL_BP0_FCP_LEN + scpdata_len;
reipl_block_nvme->nvme.scp_data_len = scpdata_len;
return count;
}
static struct bin_attribute sys_reipl_nvme_scp_data_attr =
__BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_nvme_scpdata_read,
reipl_nvme_scpdata_write, DIAG308_SCPDATA_SIZE);
static struct bin_attribute *reipl_nvme_bin_attrs[] = {
&sys_reipl_nvme_scp_data_attr,
NULL,
};
DEFINE_IPL_ATTR_RW(reipl_nvme, fid, "0x%08llx\n", "%llx\n",
reipl_block_nvme->nvme.fid);
DEFINE_IPL_ATTR_RW(reipl_nvme, nsid, "0x%08llx\n", "%llx\n",
reipl_block_nvme->nvme.nsid);
DEFINE_IPL_ATTR_RW(reipl_nvme, bootprog, "%lld\n", "%lld\n",
reipl_block_nvme->nvme.bootprog);
DEFINE_IPL_ATTR_RW(reipl_nvme, br_lba, "%lld\n", "%lld\n",
reipl_block_nvme->nvme.br_lba);
/* nvme wrapper */
static ssize_t reipl_nvme_loadparm_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return reipl_generic_loadparm_show(reipl_block_nvme, page);
}
static ssize_t reipl_nvme_loadparm_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t len)
{
return reipl_generic_loadparm_store(reipl_block_nvme, buf, len);
}
static struct kobj_attribute sys_reipl_nvme_loadparm_attr =
__ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nvme_loadparm_show,
reipl_nvme_loadparm_store);
static struct attribute *reipl_nvme_attrs[] = {
&sys_reipl_nvme_fid_attr.attr,
&sys_reipl_nvme_nsid_attr.attr,
&sys_reipl_nvme_bootprog_attr.attr,
&sys_reipl_nvme_br_lba_attr.attr,
&sys_reipl_nvme_loadparm_attr.attr,
NULL,
};
static struct attribute_group reipl_nvme_attr_group = {
.attrs = reipl_nvme_attrs,
.bin_attrs = reipl_nvme_bin_attrs
};
static ssize_t reipl_nvme_clear_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return sprintf(page, "%u\n", reipl_nvme_clear);
}
static ssize_t reipl_nvme_clear_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t len)
{
if (strtobool(buf, &reipl_nvme_clear) < 0)
return -EINVAL;
return len;
}
static struct kobj_attribute sys_reipl_nvme_clear_attr =
__ATTR(clear, 0644, reipl_nvme_clear_show, reipl_nvme_clear_store);
/* CCW reipl device attributes */
DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw);
/* NSS wrapper */
static ssize_t reipl_nss_loadparm_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return reipl_generic_loadparm_show(reipl_block_nss, page);
}
static ssize_t reipl_nss_loadparm_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t len)
{
return reipl_generic_loadparm_store(reipl_block_nss, buf, len);
}
/* CCW wrapper */
static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return reipl_generic_loadparm_show(reipl_block_ccw, page);
}
static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t len)
{
return reipl_generic_loadparm_store(reipl_block_ccw, buf, len);
}
static struct kobj_attribute sys_reipl_ccw_loadparm_attr =
__ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show,
reipl_ccw_loadparm_store);
static ssize_t reipl_ccw_clear_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
return sprintf(page, "%u\n", reipl_ccw_clear);
}
static ssize_t reipl_ccw_clear_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t len)
{
if (strtobool(buf, &reipl_ccw_clear) < 0)
return -EINVAL;
return len;
}
static struct kobj_attribute sys_reipl_ccw_clear_attr =
__ATTR(clear, 0644, reipl_ccw_clear_show, reipl_ccw_clear_store);
static struct attribute *reipl_ccw_attrs_vm[] = {
&sys_reipl_ccw_device_attr.attr,
&sys_reipl_ccw_loadparm_attr.attr,
&sys_reipl_ccw_vmparm_attr.attr,
&sys_reipl_ccw_clear_attr.attr,
NULL,
};
static struct attribute *reipl_ccw_attrs_lpar[] = {
&sys_reipl_ccw_device_attr.attr,
&sys_reipl_ccw_loadparm_attr.attr,
&sys_reipl_ccw_clear_attr.attr,
NULL,
};
static struct attribute_group reipl_ccw_attr_group_vm = {
.name = IPL_CCW_STR,
.attrs = reipl_ccw_attrs_vm,
};
static struct attribute_group reipl_ccw_attr_group_lpar = {
.name = IPL_CCW_STR,
.attrs = reipl_ccw_attrs_lpar,
};
/* NSS reipl device attributes */
static void reipl_get_ascii_nss_name(char *dst,
struct ipl_parameter_block *ipb)
{
memcpy(dst, ipb->ccw.nss_name, NSS_NAME_SIZE);
EBCASC(dst, NSS_NAME_SIZE);
dst[NSS_NAME_SIZE] = 0;
}
static ssize_t reipl_nss_name_show(struct kobject *kobj,