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2218 lines
56 KiB
2218 lines
56 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* ipl/reipl/dump support for Linux on s390. |
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* |
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* Copyright IBM Corp. 2005, 2012 |
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* Author(s): Michael Holzheu <[email protected]> |
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* Heiko Carstens <[email protected]> |
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* Volker Sameske <[email protected]> |
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*/ |
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|
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#include <linux/types.h> |
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#include <linux/export.h> |
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#include <linux/init.h> |
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#include <linux/device.h> |
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#include <linux/delay.h> |
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#include <linux/panic_notifier.h> |
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#include <linux/reboot.h> |
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#include <linux/ctype.h> |
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#include <linux/fs.h> |
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#include <linux/gfp.h> |
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#include <linux/crash_dump.h> |
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#include <linux/debug_locks.h> |
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#include <asm/diag.h> |
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#include <asm/ipl.h> |
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#include <asm/smp.h> |
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#include <asm/setup.h> |
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#include <asm/cpcmd.h> |
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#include <asm/ebcdic.h> |
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#include <asm/sclp.h> |
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#include <asm/checksum.h> |
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#include <asm/debug.h> |
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#include <asm/os_info.h> |
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#include <asm/sections.h> |
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#include <asm/boot_data.h> |
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#include "entry.h" |
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#define IPL_PARM_BLOCK_VERSION 0 |
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#define IPL_UNKNOWN_STR "unknown" |
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#define IPL_CCW_STR "ccw" |
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#define IPL_FCP_STR "fcp" |
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#define IPL_FCP_DUMP_STR "fcp_dump" |
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#define IPL_NVME_STR "nvme" |
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#define IPL_NVME_DUMP_STR "nvme_dump" |
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#define IPL_NSS_STR "nss" |
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#define DUMP_CCW_STR "ccw" |
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#define DUMP_FCP_STR "fcp" |
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#define DUMP_NVME_STR "nvme" |
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#define DUMP_NONE_STR "none" |
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/* |
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* Four shutdown trigger types are supported: |
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* - panic |
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* - halt |
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* - power off |
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* - reipl |
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* - restart |
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*/ |
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#define ON_PANIC_STR "on_panic" |
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#define ON_HALT_STR "on_halt" |
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#define ON_POFF_STR "on_poff" |
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#define ON_REIPL_STR "on_reboot" |
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#define ON_RESTART_STR "on_restart" |
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struct shutdown_action; |
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struct shutdown_trigger { |
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char *name; |
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struct shutdown_action *action; |
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}; |
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/* |
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* The following shutdown action types are supported: |
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*/ |
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#define SHUTDOWN_ACTION_IPL_STR "ipl" |
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#define SHUTDOWN_ACTION_REIPL_STR "reipl" |
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#define SHUTDOWN_ACTION_DUMP_STR "dump" |
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#define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" |
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#define SHUTDOWN_ACTION_STOP_STR "stop" |
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#define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" |
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struct shutdown_action { |
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char *name; |
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void (*fn) (struct shutdown_trigger *trigger); |
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int (*init) (void); |
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int init_rc; |
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}; |
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static char *ipl_type_str(enum ipl_type type) |
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{ |
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switch (type) { |
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case IPL_TYPE_CCW: |
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return IPL_CCW_STR; |
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case IPL_TYPE_FCP: |
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return IPL_FCP_STR; |
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case IPL_TYPE_FCP_DUMP: |
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return IPL_FCP_DUMP_STR; |
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case IPL_TYPE_NSS: |
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return IPL_NSS_STR; |
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case IPL_TYPE_NVME: |
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return IPL_NVME_STR; |
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case IPL_TYPE_NVME_DUMP: |
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return IPL_NVME_DUMP_STR; |
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case IPL_TYPE_UNKNOWN: |
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default: |
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return IPL_UNKNOWN_STR; |
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} |
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} |
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enum dump_type { |
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DUMP_TYPE_NONE = 1, |
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DUMP_TYPE_CCW = 2, |
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DUMP_TYPE_FCP = 4, |
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DUMP_TYPE_NVME = 8, |
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}; |
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static char *dump_type_str(enum dump_type type) |
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{ |
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switch (type) { |
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case DUMP_TYPE_NONE: |
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return DUMP_NONE_STR; |
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case DUMP_TYPE_CCW: |
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return DUMP_CCW_STR; |
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case DUMP_TYPE_FCP: |
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return DUMP_FCP_STR; |
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case DUMP_TYPE_NVME: |
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return DUMP_NVME_STR; |
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default: |
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return NULL; |
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} |
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} |
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int __bootdata_preserved(ipl_block_valid); |
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struct ipl_parameter_block __bootdata_preserved(ipl_block); |
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int __bootdata_preserved(ipl_secure_flag); |
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unsigned long __bootdata_preserved(ipl_cert_list_addr); |
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unsigned long __bootdata_preserved(ipl_cert_list_size); |
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unsigned long __bootdata(early_ipl_comp_list_addr); |
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unsigned long __bootdata(early_ipl_comp_list_size); |
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static int reipl_capabilities = IPL_TYPE_UNKNOWN; |
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static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN; |
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static struct ipl_parameter_block *reipl_block_fcp; |
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static struct ipl_parameter_block *reipl_block_nvme; |
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static struct ipl_parameter_block *reipl_block_ccw; |
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static struct ipl_parameter_block *reipl_block_nss; |
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static struct ipl_parameter_block *reipl_block_actual; |
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static int dump_capabilities = DUMP_TYPE_NONE; |
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static enum dump_type dump_type = DUMP_TYPE_NONE; |
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static struct ipl_parameter_block *dump_block_fcp; |
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static struct ipl_parameter_block *dump_block_nvme; |
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static struct ipl_parameter_block *dump_block_ccw; |
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static struct sclp_ipl_info sclp_ipl_info; |
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static bool reipl_nvme_clear; |
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static bool reipl_fcp_clear; |
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static bool reipl_ccw_clear; |
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static inline int __diag308(unsigned long subcode, void *addr) |
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{ |
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union register_pair r1; |
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r1.even = (unsigned long) addr; |
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r1.odd = 0; |
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asm volatile( |
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" diag %[r1],%[subcode],0x308\n" |
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"0: nopr %%r7\n" |
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EX_TABLE(0b,0b) |
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: [r1] "+&d" (r1.pair) |
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: [subcode] "d" (subcode) |
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: "cc", "memory"); |
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return r1.odd; |
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} |
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int diag308(unsigned long subcode, void *addr) |
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{ |
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diag_stat_inc(DIAG_STAT_X308); |
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return __diag308(subcode, addr); |
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} |
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EXPORT_SYMBOL_GPL(diag308); |
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/* SYSFS */ |
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#define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \ |
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static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \ |
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struct kobj_attribute *attr, \ |
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char *page) \ |
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{ \ |
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return scnprintf(page, PAGE_SIZE, _format, ##args); \ |
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} |
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#define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \ |
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static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
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struct kobj_attribute *attr, \ |
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const char *buf, size_t len) \ |
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{ \ |
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unsigned long long ssid, devno; \ |
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\ |
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if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \ |
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return -EINVAL; \ |
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\ |
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if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \ |
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return -EINVAL; \ |
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\ |
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_ipl_blk.ssid = ssid; \ |
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_ipl_blk.devno = devno; \ |
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return len; \ |
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} |
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#define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \ |
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IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \ |
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_ipl_blk.ssid, _ipl_blk.devno); \ |
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IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \ |
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static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
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__ATTR(_name, (S_IRUGO | S_IWUSR), \ |
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sys_##_prefix##_##_name##_show, \ |
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sys_##_prefix##_##_name##_store) \ |
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#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \ |
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IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \ |
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static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
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__ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL) |
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#define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \ |
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IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \ |
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static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
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struct kobj_attribute *attr, \ |
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const char *buf, size_t len) \ |
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{ \ |
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unsigned long long value; \ |
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if (sscanf(buf, _fmt_in, &value) != 1) \ |
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return -EINVAL; \ |
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_value = value; \ |
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return len; \ |
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} \ |
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static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
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__ATTR(_name,(S_IRUGO | S_IWUSR), \ |
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sys_##_prefix##_##_name##_show, \ |
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sys_##_prefix##_##_name##_store) |
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#define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\ |
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IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \ |
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static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \ |
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struct kobj_attribute *attr, \ |
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const char *buf, size_t len) \ |
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{ \ |
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strncpy(_value, buf, sizeof(_value) - 1); \ |
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strim(_value); \ |
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return len; \ |
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} \ |
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static struct kobj_attribute sys_##_prefix##_##_name##_attr = \ |
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__ATTR(_name,(S_IRUGO | S_IWUSR), \ |
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sys_##_prefix##_##_name##_show, \ |
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sys_##_prefix##_##_name##_store) |
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/* |
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* ipl section |
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*/ |
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static __init enum ipl_type get_ipl_type(void) |
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{ |
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if (!ipl_block_valid) |
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return IPL_TYPE_UNKNOWN; |
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switch (ipl_block.pb0_hdr.pbt) { |
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case IPL_PBT_CCW: |
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return IPL_TYPE_CCW; |
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case IPL_PBT_FCP: |
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if (ipl_block.fcp.opt == IPL_PB0_FCP_OPT_DUMP) |
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return IPL_TYPE_FCP_DUMP; |
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else |
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return IPL_TYPE_FCP; |
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case IPL_PBT_NVME: |
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if (ipl_block.nvme.opt == IPL_PB0_NVME_OPT_DUMP) |
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return IPL_TYPE_NVME_DUMP; |
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else |
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return IPL_TYPE_NVME; |
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} |
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return IPL_TYPE_UNKNOWN; |
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} |
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struct ipl_info ipl_info; |
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EXPORT_SYMBOL_GPL(ipl_info); |
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static ssize_t ipl_type_show(struct kobject *kobj, struct kobj_attribute *attr, |
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char *page) |
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{ |
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return sprintf(page, "%s\n", ipl_type_str(ipl_info.type)); |
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} |
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static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type); |
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static ssize_t ipl_secure_show(struct kobject *kobj, |
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struct kobj_attribute *attr, char *page) |
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{ |
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return sprintf(page, "%i\n", !!ipl_secure_flag); |
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} |
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static struct kobj_attribute sys_ipl_secure_attr = |
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__ATTR(secure, 0444, ipl_secure_show, NULL); |
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static ssize_t ipl_has_secure_show(struct kobject *kobj, |
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struct kobj_attribute *attr, char *page) |
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{ |
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return sprintf(page, "%i\n", !!sclp.has_sipl); |
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} |
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static struct kobj_attribute sys_ipl_has_secure_attr = |
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__ATTR(has_secure, 0444, ipl_has_secure_show, NULL); |
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static ssize_t ipl_vm_parm_show(struct kobject *kobj, |
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struct kobj_attribute *attr, char *page) |
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{ |
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char parm[DIAG308_VMPARM_SIZE + 1] = {}; |
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if (ipl_block_valid && (ipl_block.pb0_hdr.pbt == IPL_PBT_CCW)) |
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ipl_block_get_ascii_vmparm(parm, sizeof(parm), &ipl_block); |
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return sprintf(page, "%s\n", parm); |
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} |
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static struct kobj_attribute sys_ipl_vm_parm_attr = |
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__ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL); |
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static ssize_t sys_ipl_device_show(struct kobject *kobj, |
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struct kobj_attribute *attr, char *page) |
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{ |
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switch (ipl_info.type) { |
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case IPL_TYPE_CCW: |
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return sprintf(page, "0.%x.%04x\n", ipl_block.ccw.ssid, |
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ipl_block.ccw.devno); |
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case IPL_TYPE_FCP: |
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case IPL_TYPE_FCP_DUMP: |
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return sprintf(page, "0.0.%04x\n", ipl_block.fcp.devno); |
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case IPL_TYPE_NVME: |
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case IPL_TYPE_NVME_DUMP: |
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return sprintf(page, "%08ux\n", ipl_block.nvme.fid); |
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default: |
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return 0; |
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} |
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} |
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static struct kobj_attribute sys_ipl_device_attr = |
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__ATTR(device, S_IRUGO, sys_ipl_device_show, NULL); |
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static ssize_t ipl_parameter_read(struct file *filp, struct kobject *kobj, |
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struct bin_attribute *attr, char *buf, |
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loff_t off, size_t count) |
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{ |
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return memory_read_from_buffer(buf, count, &off, &ipl_block, |
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ipl_block.hdr.len); |
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} |
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static struct bin_attribute ipl_parameter_attr = |
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__BIN_ATTR(binary_parameter, S_IRUGO, ipl_parameter_read, NULL, |
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PAGE_SIZE); |
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static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj, |
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struct bin_attribute *attr, char *buf, |
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loff_t off, size_t count) |
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{ |
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unsigned int size = ipl_block.fcp.scp_data_len; |
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void *scp_data = &ipl_block.fcp.scp_data; |
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return memory_read_from_buffer(buf, count, &off, scp_data, size); |
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} |
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static ssize_t ipl_nvme_scp_data_read(struct file *filp, struct kobject *kobj, |
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struct bin_attribute *attr, char *buf, |
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loff_t off, size_t count) |
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{ |
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unsigned int size = ipl_block.nvme.scp_data_len; |
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void *scp_data = &ipl_block.nvme.scp_data; |
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return memory_read_from_buffer(buf, count, &off, scp_data, size); |
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} |
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static struct bin_attribute ipl_scp_data_attr = |
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__BIN_ATTR(scp_data, S_IRUGO, ipl_scp_data_read, NULL, PAGE_SIZE); |
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static struct bin_attribute ipl_nvme_scp_data_attr = |
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__BIN_ATTR(scp_data, S_IRUGO, ipl_nvme_scp_data_read, NULL, PAGE_SIZE); |
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static struct bin_attribute *ipl_fcp_bin_attrs[] = { |
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&ipl_parameter_attr, |
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&ipl_scp_data_attr, |
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NULL, |
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}; |
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static struct bin_attribute *ipl_nvme_bin_attrs[] = { |
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&ipl_parameter_attr, |
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&ipl_nvme_scp_data_attr, |
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NULL, |
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}; |
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/* FCP ipl device attributes */ |
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DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n", |
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(unsigned long long)ipl_block.fcp.wwpn); |
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DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n", |
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(unsigned long long)ipl_block.fcp.lun); |
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DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n", |
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(unsigned long long)ipl_block.fcp.bootprog); |
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DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n", |
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(unsigned long long)ipl_block.fcp.br_lba); |
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/* NVMe ipl device attributes */ |
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DEFINE_IPL_ATTR_RO(ipl_nvme, fid, "0x%08llx\n", |
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(unsigned long long)ipl_block.nvme.fid); |
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DEFINE_IPL_ATTR_RO(ipl_nvme, nsid, "0x%08llx\n", |
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(unsigned long long)ipl_block.nvme.nsid); |
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DEFINE_IPL_ATTR_RO(ipl_nvme, bootprog, "%lld\n", |
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(unsigned long long)ipl_block.nvme.bootprog); |
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DEFINE_IPL_ATTR_RO(ipl_nvme, br_lba, "%lld\n", |
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(unsigned long long)ipl_block.nvme.br_lba); |
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static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj, |
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struct kobj_attribute *attr, char *page) |
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{ |
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char loadparm[LOADPARM_LEN + 1] = {}; |
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|
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if (!sclp_ipl_info.is_valid) |
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return sprintf(page, "#unknown#\n"); |
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memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
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EBCASC(loadparm, LOADPARM_LEN); |
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strim(loadparm); |
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return sprintf(page, "%s\n", loadparm); |
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} |
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static struct kobj_attribute sys_ipl_ccw_loadparm_attr = |
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__ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL); |
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|
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static struct attribute *ipl_fcp_attrs[] = { |
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&sys_ipl_type_attr.attr, |
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&sys_ipl_device_attr.attr, |
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&sys_ipl_fcp_wwpn_attr.attr, |
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&sys_ipl_fcp_lun_attr.attr, |
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&sys_ipl_fcp_bootprog_attr.attr, |
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&sys_ipl_fcp_br_lba_attr.attr, |
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&sys_ipl_ccw_loadparm_attr.attr, |
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&sys_ipl_secure_attr.attr, |
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&sys_ipl_has_secure_attr.attr, |
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NULL, |
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}; |
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static struct attribute_group ipl_fcp_attr_group = { |
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.attrs = ipl_fcp_attrs, |
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.bin_attrs = ipl_fcp_bin_attrs, |
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}; |
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|
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static struct attribute *ipl_nvme_attrs[] = { |
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&sys_ipl_type_attr.attr, |
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&sys_ipl_nvme_fid_attr.attr, |
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&sys_ipl_nvme_nsid_attr.attr, |
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&sys_ipl_nvme_bootprog_attr.attr, |
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&sys_ipl_nvme_br_lba_attr.attr, |
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&sys_ipl_ccw_loadparm_attr.attr, |
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&sys_ipl_secure_attr.attr, |
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&sys_ipl_has_secure_attr.attr, |
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NULL, |
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}; |
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|
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static struct attribute_group ipl_nvme_attr_group = { |
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.attrs = ipl_nvme_attrs, |
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.bin_attrs = ipl_nvme_bin_attrs, |
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}; |
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|
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|
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/* CCW ipl device attributes */ |
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|
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static struct attribute *ipl_ccw_attrs_vm[] = { |
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&sys_ipl_type_attr.attr, |
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&sys_ipl_device_attr.attr, |
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&sys_ipl_ccw_loadparm_attr.attr, |
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&sys_ipl_vm_parm_attr.attr, |
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&sys_ipl_secure_attr.attr, |
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&sys_ipl_has_secure_attr.attr, |
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NULL, |
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}; |
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|
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static struct attribute *ipl_ccw_attrs_lpar[] = { |
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&sys_ipl_type_attr.attr, |
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&sys_ipl_device_attr.attr, |
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&sys_ipl_ccw_loadparm_attr.attr, |
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&sys_ipl_secure_attr.attr, |
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&sys_ipl_has_secure_attr.attr, |
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NULL, |
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}; |
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|
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static struct attribute_group ipl_ccw_attr_group_vm = { |
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.attrs = ipl_ccw_attrs_vm, |
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}; |
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|
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static struct attribute_group ipl_ccw_attr_group_lpar = { |
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.attrs = ipl_ccw_attrs_lpar |
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}; |
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|
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/* UNKNOWN ipl device attributes */ |
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|
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static struct attribute *ipl_unknown_attrs[] = { |
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&sys_ipl_type_attr.attr, |
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NULL, |
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}; |
|
|
|
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, |
|
struct kobj_attribute *attr, char *page) |
|
{ |
|
char nss_name[NSS_NAME_SIZE + 1] = {}; |
|
|
|
reipl_get_ascii_nss_name(nss_name, reipl_block_nss); |
|
return sprintf(page, "%s\n", nss_name); |
|
} |
|
|
|
static ssize_t reipl_nss_name_store(struct kobject *kobj, |
|
struct kobj_attribute *attr, |
|
const char *buf, size_t len) |
|
{ |
|
int nss_len; |
|
|
|
/* ignore trailing newline */ |
|
nss_len = len; |
|
if ((len > 0) && (buf[len - 1] == '\n')) |
|
nss_len--; |
|
|
|
if (nss_len > NSS_NAME_SIZE) |
|
return -EINVAL; |
|
|
|
memset(reipl_block_nss->ccw.nss_name, 0x40, NSS_NAME_SIZE); |
|
if (nss_len > 0) { |
|
reipl_block_nss->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_NSS; |
|
memcpy(reipl_block_nss->ccw.nss_name, buf, nss_len); |
|
ASCEBC(reipl_block_nss->ccw.nss_name, nss_len); |
|
EBC_TOUPPER(reipl_block_nss->ccw.nss_name, nss_len); |
|
} else { |
|
reipl_block_nss->ccw.vm_flags &= ~IPL_PB0_CCW_VM_FLAG_NSS; |
|
} |
|
|
|
return len; |
|
} |
|
|
|
static struct kobj_attribute sys_reipl_nss_name_attr = |
|
__ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show, |
|
reipl_nss_name_store); |
|
|
|
static struct kobj_attribute sys_reipl_nss_loadparm_attr = |
|
__ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show, |
|
reipl_nss_loadparm_store); |
|
|
|
static struct attribute *reipl_nss_attrs[] = { |
|
&sys_reipl_nss_name_attr.attr, |
|
&sys_reipl_nss_loadparm_attr.attr, |
|
&sys_reipl_nss_vmparm_attr.attr, |
|
NULL, |
|
}; |
|
|
|
static struct attribute_group reipl_nss_attr_group = { |
|
.name = IPL_NSS_STR, |
|
.attrs = reipl_nss_attrs, |
|
}; |
|
|
|
void set_os_info_reipl_block(void) |
|
{ |
|
os_info_entry_add(OS_INFO_REIPL_BLOCK, reipl_block_actual, |
|
reipl_block_actual->hdr.len); |
|
} |
|
|
|
/* reipl type */ |
|
|
|
static int reipl_set_type(enum ipl_type type) |
|
{ |
|
if (!(reipl_capabilities & type)) |
|
return -EINVAL; |
|
|
|
switch(type) { |
|
case IPL_TYPE_CCW: |
|
reipl_block_actual = reipl_block_ccw; |
|
break; |
|
case IPL_TYPE_FCP: |
|
reipl_block_actual = reipl_block_fcp; |
|
break; |
|
case IPL_TYPE_NVME: |
|
reipl_block_actual = reipl_block_nvme; |
|
break; |
|
case IPL_TYPE_NSS: |
|
reipl_block_actual = reipl_block_nss; |
|
break; |
|
default: |
|
break; |
|
} |
|
reipl_type = type; |
|
return 0; |
|
} |
|
|
|
static ssize_t reipl_type_show(struct kobject *kobj, |
|
struct kobj_attribute *attr, char *page) |
|
{ |
|
return sprintf(page, "%s\n", ipl_type_str(reipl_type)); |
|
} |
|
|
|
static ssize_t reipl_type_store(struct kobject *kobj, |
|
struct kobj_attribute *attr, |
|
const char *buf, size_t len) |
|
{ |
|
int rc = -EINVAL; |
|
|
|
if (strncmp(buf, IPL_CCW_STR, strlen(IPL_CCW_STR)) == 0) |
|
rc = reipl_set_type(IPL_TYPE_CCW); |
|
else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0) |
|
rc = reipl_set_type(IPL_TYPE_FCP); |
|
else if (strncmp(buf, IPL_NVME_STR, strlen(IPL_NVME_STR)) == 0) |
|
rc = reipl_set_type(IPL_TYPE_NVME); |
|
else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0) |
|
rc = reipl_set_type(IPL_TYPE_NSS); |
|
return (rc != 0) ? rc : len; |
|
} |
|
|
|
static struct kobj_attribute reipl_type_attr = |
|
__ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store); |
|
|
|
static struct kset *reipl_kset; |
|
static struct kset *reipl_fcp_kset; |
|
static struct kset *reipl_nvme_kset; |
|
|
|
static void __reipl_run(void *unused) |
|
{ |
|
switch (reipl_type) { |
|
case IPL_TYPE_CCW: |
|
diag308(DIAG308_SET, reipl_block_ccw); |
|
if (reipl_ccw_clear) |
|
diag308(DIAG308_LOAD_CLEAR, NULL); |
|
else |
|
diag308(DIAG308_LOAD_NORMAL_DUMP, NULL); |
|
break; |
|
case IPL_TYPE_FCP: |
|
diag308(DIAG308_SET, reipl_block_fcp); |
|
if (reipl_fcp_clear) |
|
diag308(DIAG308_LOAD_CLEAR, NULL); |
|
else |
|
diag308(DIAG308_LOAD_NORMAL, NULL); |
|
break; |
|
case IPL_TYPE_NVME: |
|
diag308(DIAG308_SET, reipl_block_nvme); |
|
if (reipl_nvme_clear) |
|
diag308(DIAG308_LOAD_CLEAR, NULL); |
|
else |
|
diag308(DIAG308_LOAD_NORMAL, NULL); |
|
break; |
|
case IPL_TYPE_NSS: |
|
diag308(DIAG308_SET, reipl_block_nss); |
|
diag308(DIAG308_LOAD_CLEAR, NULL); |
|
break; |
|
case IPL_TYPE_UNKNOWN: |
|
diag308(DIAG308_LOAD_CLEAR, NULL); |
|
break; |
|
case IPL_TYPE_FCP_DUMP: |
|
case IPL_TYPE_NVME_DUMP: |
|
break; |
|
} |
|
disabled_wait(); |
|
} |
|
|
|
static void reipl_run(struct shutdown_trigger *trigger) |
|
{ |
|
smp_call_ipl_cpu(__reipl_run, NULL); |
|
} |
|
|
|
static void reipl_block_ccw_init(struct ipl_parameter_block *ipb) |
|
{ |
|
ipb->hdr.len = IPL_BP_CCW_LEN; |
|
ipb->hdr.version = IPL_PARM_BLOCK_VERSION; |
|
ipb->pb0_hdr.len = IPL_BP0_CCW_LEN; |
|
ipb->pb0_hdr.pbt = IPL_PBT_CCW; |
|
} |
|
|
|
static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb) |
|
{ |
|
/* LOADPARM */ |
|
/* check if read scp info worked and set loadparm */ |
|
if (sclp_ipl_info.is_valid) |
|
memcpy(ipb->ccw.loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); |
|
else |
|
/* read scp info failed: set empty loadparm (EBCDIC blanks) */ |
|
memset(ipb->ccw.loadparm, 0x40, LOADPARM_LEN); |
|
ipb->ccw.flags = IPL_PB0_FLAG_LOADPARM; |
|
|
|
/* VM PARM */ |
|
if (MACHINE_IS_VM && ipl_block_valid && |
|
(ipl_block.ccw.vm_flags & IPL_PB0_CCW_VM_FLAG_VP)) { |
|
|
|
ipb->ccw.vm_flags |= IPL_PB0_CCW_VM_FLAG_VP; |
|
ipb->ccw.vm_parm_len = ipl_block.ccw.vm_parm_len; |
|
memcpy(ipb->ccw.vm_parm, |
|
ipl_block.ccw.vm_parm, DIAG308_VMPARM_SIZE); |
|
} |
|
} |
|
|
|
static int __init reipl_nss_init(void) |
|
{ |
|
int rc; |
|
|
|
if (!MACHINE_IS_VM) |
|
return 0; |
|
|
|
reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL); |
|
if (!reipl_block_nss) |
|
return -ENOMEM; |
|
|
|
rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group); |
|
if (rc) |
|
return rc; |
|
|
|
reipl_block_ccw_init(reipl_block_nss); |
|
reipl_capabilities |= IPL_TYPE_NSS; |
|
return 0; |
|
} |
|
|
|
static int __init reipl_ccw_init(void) |
|
{ |
|
int rc; |
|
|
|
reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); |
|
if (!reipl_block_ccw) |
|
return -ENOMEM; |
|
|
|
rc = sysfs_create_group(&reipl_kset->kobj, |
|
MACHINE_IS_VM ? &reipl_ccw_attr_group_vm |
|
: &reipl_ccw_attr_group_lpar); |
|
if (rc) |
|
return rc; |
|
|
|
reipl_block_ccw_init(reipl_block_ccw); |
|
if (ipl_info.type == IPL_TYPE_CCW) { |
|
reipl_block_ccw->ccw.ssid = ipl_block.ccw.ssid; |
|
reipl_block_ccw->ccw.devno = ipl_block.ccw.devno; |
|
reipl_block_ccw_fill_parms(reipl_block_ccw); |
|
} |
|
|
|
reipl_capabilities |= IPL_TYPE_CCW; |
|
return 0; |
|
} |
|
|
|
static int __init reipl_fcp_init(void) |
|
{ |
|
int rc; |
|
|
|
reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); |
|
if (!reipl_block_fcp) |
|
return -ENOMEM; |
|
|
|
/* sysfs: create fcp kset for mixing attr group and bin attrs */ |
|
reipl_fcp_kset = kset_create_and_add(IPL_FCP_STR, NULL, |
|
&reipl_kset->kobj); |
|
if (!reipl_fcp_kset) { |
|
free_page((unsigned long) reipl_block_fcp); |
|
return -ENOMEM; |
|
} |
|
|
|
rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); |
|
if (rc) |
|
goto out1; |
|
|
|
if (test_facility(141)) { |
|
rc = sysfs_create_file(&reipl_fcp_kset->kobj, |
|
&sys_reipl_fcp_clear_attr.attr); |
|
if (rc) |
|
goto out2; |
|
} else { |
|
reipl_fcp_clear = true; |
|
} |
|
|
|
if (ipl_info.type == IPL_TYPE_FCP) { |
|
memcpy(reipl_block_fcp, &ipl_block, sizeof(ipl_block)); |
|
/* |
|
* Fix loadparm: There are systems where the (SCSI) LOADPARM |
|
* is invalid in the SCSI IPL parameter block, so take it |
|
* always from sclp_ipl_info. |
|
*/ |
|
memcpy(reipl_block_fcp->fcp.loadparm, sclp_ipl_info.loadparm, |
|
LOADPARM_LEN); |
|
} else { |
|
reipl_block_fcp->hdr.len = IPL_BP_FCP_LEN; |
|
reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; |
|
reipl_block_fcp->fcp.len = IPL_BP0_FCP_LEN; |
|
reipl_block_fcp->fcp.pbt = IPL_PBT_FCP; |
|
reipl_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_IPL; |
|
} |
|
reipl_capabilities |= IPL_TYPE_FCP; |
|
return 0; |
|
|
|
out2: |
|
sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); |
|
out1: |
|
kset_unregister(reipl_fcp_kset); |
|
free_page((unsigned long) reipl_block_fcp); |
|
return rc; |
|
} |
|
|
|
static int __init reipl_nvme_init(void) |
|
{ |
|
int rc; |
|
|
|
reipl_block_nvme = (void *) get_zeroed_page(GFP_KERNEL); |
|
if (!reipl_block_nvme) |
|
return -ENOMEM; |
|
|
|
/* sysfs: create kset for mixing attr group and bin attrs */ |
|
reipl_nvme_kset = kset_create_and_add(IPL_NVME_STR, NULL, |
|
&reipl_kset->kobj); |
|
if (!reipl_nvme_kset) { |
|
free_page((unsigned long) reipl_block_nvme); |
|
return -ENOMEM; |
|
} |
|
|
|
rc = sysfs_create_group(&reipl_nvme_kset->kobj, &reipl_nvme_attr_group); |
|
if (rc) |
|
goto out1; |
|
|
|
if (test_facility(141)) { |
|
rc = sysfs_create_file(&reipl_nvme_kset->kobj, |
|
&sys_reipl_nvme_clear_attr.attr); |
|
if (rc) |
|
goto out2; |
|
} else { |
|
reipl_nvme_clear = true; |
|
} |
|
|
|
if (ipl_info.type == IPL_TYPE_NVME) { |
|
memcpy(reipl_block_nvme, &ipl_block, sizeof(ipl_block)); |
|
/* |
|
* Fix loadparm: There are systems where the (SCSI) LOADPARM |
|
* is invalid in the IPL parameter block, so take it |
|
* always from sclp_ipl_info. |
|
*/ |
|
memcpy(reipl_block_nvme->nvme.loadparm, sclp_ipl_info.loadparm, |
|
LOADPARM_LEN); |
|
} else { |
|
reipl_block_nvme->hdr.len = IPL_BP_NVME_LEN; |
|
reipl_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION; |
|
reipl_block_nvme->nvme.len = IPL_BP0_NVME_LEN; |
|
reipl_block_nvme->nvme.pbt = IPL_PBT_NVME; |
|
reipl_block_nvme->nvme.opt = IPL_PB0_NVME_OPT_IPL; |
|
} |
|
reipl_capabilities |= IPL_TYPE_NVME; |
|
return 0; |
|
|
|
out2: |
|
sysfs_remove_group(&reipl_nvme_kset->kobj, &reipl_nvme_attr_group); |
|
out1: |
|
kset_unregister(reipl_nvme_kset); |
|
free_page((unsigned long) reipl_block_nvme); |
|
return rc; |
|
} |
|
|
|
static int __init reipl_type_init(void) |
|
{ |
|
enum ipl_type reipl_type = ipl_info.type; |
|
struct ipl_parameter_block *reipl_block; |
|
unsigned long size; |
|
|
|
reipl_block = os_info_old_entry(OS_INFO_REIPL_BLOCK, &size); |
|
if (!reipl_block) |
|
goto out; |
|
/* |
|
* If we have an OS info reipl block, this will be used |
|
*/ |
|
if (reipl_block->pb0_hdr.pbt == IPL_PBT_FCP) { |
|
memcpy(reipl_block_fcp, reipl_block, size); |
|
reipl_type = IPL_TYPE_FCP; |
|
} else if (reipl_block->pb0_hdr.pbt == IPL_PBT_NVME) { |
|
memcpy(reipl_block_nvme, reipl_block, size); |
|
reipl_type = IPL_TYPE_NVME; |
|
} else if (reipl_block->pb0_hdr.pbt == IPL_PBT_CCW) { |
|
memcpy(reipl_block_ccw, reipl_block, size); |
|
reipl_type = IPL_TYPE_CCW; |
|
} |
|
out: |
|
return reipl_set_type(reipl_type); |
|
} |
|
|
|
static int __init reipl_init(void) |
|
{ |
|
int rc; |
|
|
|
reipl_kset = kset_create_and_add("reipl", NULL, firmware_kobj); |
|
if (!reipl_kset) |
|
return -ENOMEM; |
|
rc = sysfs_create_file(&reipl_kset->kobj, &reipl_type_attr.attr); |
|
if (rc) { |
|
kset_unregister(reipl_kset); |
|
return rc; |
|
} |
|
rc = reipl_ccw_init(); |
|
if (rc) |
|
return rc; |
|
rc = reipl_fcp_init(); |
|
if (rc) |
|
return rc; |
|
rc = reipl_nvme_init(); |
|
if (rc) |
|
return rc; |
|
rc = reipl_nss_init(); |
|
if (rc) |
|
return rc; |
|
return reipl_type_init(); |
|
} |
|
|
|
static struct shutdown_action __refdata reipl_action = { |
|
.name = SHUTDOWN_ACTION_REIPL_STR, |
|
.fn = reipl_run, |
|
.init = reipl_init, |
|
}; |
|
|
|
/* |
|
* dump shutdown action: Dump Linux on shutdown. |
|
*/ |
|
|
|
/* FCP dump device attributes */ |
|
|
|
DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n", |
|
dump_block_fcp->fcp.wwpn); |
|
DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n", |
|
dump_block_fcp->fcp.lun); |
|
DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n", |
|
dump_block_fcp->fcp.bootprog); |
|
DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n", |
|
dump_block_fcp->fcp.br_lba); |
|
DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n", |
|
dump_block_fcp->fcp.devno); |
|
|
|
static struct attribute *dump_fcp_attrs[] = { |
|
&sys_dump_fcp_device_attr.attr, |
|
&sys_dump_fcp_wwpn_attr.attr, |
|
&sys_dump_fcp_lun_attr.attr, |
|
&sys_dump_fcp_bootprog_attr.attr, |
|
&sys_dump_fcp_br_lba_attr.attr, |
|
NULL, |
|
}; |
|
|
|
static struct attribute_group dump_fcp_attr_group = { |
|
.name = IPL_FCP_STR, |
|
.attrs = dump_fcp_attrs, |
|
}; |
|
|
|
/* NVME dump device attributes */ |
|
DEFINE_IPL_ATTR_RW(dump_nvme, fid, "0x%08llx\n", "%llx\n", |
|
dump_block_nvme->nvme.fid); |
|
DEFINE_IPL_ATTR_RW(dump_nvme, nsid, "0x%08llx\n", "%llx\n", |
|
dump_block_nvme->nvme.nsid); |
|
DEFINE_IPL_ATTR_RW(dump_nvme, bootprog, "%lld\n", "%llx\n", |
|
dump_block_nvme->nvme.bootprog); |
|
DEFINE_IPL_ATTR_RW(dump_nvme, br_lba, "%lld\n", "%llx\n", |
|
dump_block_nvme->nvme.br_lba); |
|
|
|
static struct attribute *dump_nvme_attrs[] = { |
|
&sys_dump_nvme_fid_attr.attr, |
|
&sys_dump_nvme_nsid_attr.attr, |
|
&sys_dump_nvme_bootprog_attr.attr, |
|
&sys_dump_nvme_br_lba_attr.attr, |
|
NULL, |
|
}; |
|
|
|
static struct attribute_group dump_nvme_attr_group = { |
|
.name = IPL_NVME_STR, |
|
.attrs = dump_nvme_attrs, |
|
}; |
|
|
|
/* CCW dump device attributes */ |
|
DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ccw); |
|
|
|
static struct attribute *dump_ccw_attrs[] = { |
|
&sys_dump_ccw_device_attr.attr, |
|
NULL, |
|
}; |
|
|
|
static struct attribute_group dump_ccw_attr_group = { |
|
.name = IPL_CCW_STR, |
|
.attrs = dump_ccw_attrs, |
|
}; |
|
|
|
/* dump type */ |
|
|
|
static int dump_set_type(enum dump_type type) |
|
{ |
|
if (!(dump_capabilities & type)) |
|
return -EINVAL; |
|
dump_type = type; |
|
return 0; |
|
} |
|
|
|
static ssize_t dump_type_show(struct kobject *kobj, |
|
struct kobj_attribute *attr, char *page) |
|
{ |
|
return sprintf(page, "%s\n", dump_type_str(dump_type)); |
|
} |
|
|
|
static ssize_t dump_type_store(struct kobject *kobj, |
|
struct kobj_attribute *attr, |
|
const char *buf, size_t len) |
|
{ |
|
int rc = -EINVAL; |
|
|
|
if (strncmp(buf, DUMP_NONE_STR, strlen(DUMP_NONE_STR)) == 0) |
|
rc = dump_set_type(DUMP_TYPE_NONE); |
|
else if (strncmp(buf, DUMP_CCW_STR, strlen(DUMP_CCW_STR)) == 0) |
|
rc = dump_set_type(DUMP_TYPE_CCW); |
|
else if (strncmp(buf, DUMP_FCP_STR, strlen(DUMP_FCP_STR)) == 0) |
|
rc = dump_set_type(DUMP_TYPE_FCP); |
|
else if (strncmp(buf, DUMP_NVME_STR, strlen(DUMP_NVME_STR)) == 0) |
|
rc = dump_set_type(DUMP_TYPE_NVME); |
|
return (rc != 0) ? rc : len; |
|
} |
|
|
|
static struct kobj_attribute dump_type_attr = |
|
__ATTR(dump_type, 0644, dump_type_show, dump_type_store); |
|
|
|
static struct kset *dump_kset; |
|
|
|
static void diag308_dump(void *dump_block) |
|
{ |
|
diag308(DIAG308_SET, dump_block); |
|
while (1) { |
|
if (diag308(DIAG308_LOAD_NORMAL_DUMP, NULL) != 0x302) |
|
break; |
|
udelay(USEC_PER_SEC); |
|
} |
|
} |
|
|
|
static void __dump_run(void *unused) |
|
{ |
|
switch (dump_type) { |
|
case DUMP_TYPE_CCW: |
|
diag308_dump(dump_block_ccw); |
|
break; |
|
case DUMP_TYPE_FCP: |
|
diag308_dump(dump_block_fcp); |
|
break; |
|
case DUMP_TYPE_NVME: |
|
diag308_dump(dump_block_nvme); |
|
break; |
|
default: |
|
break; |
|
} |
|
} |
|
|
|
static void dump_run(struct shutdown_trigger *trigger) |
|
{ |
|
if (dump_type == DUMP_TYPE_NONE) |
|
return; |
|
smp_send_stop(); |
|
smp_call_ipl_cpu(__dump_run, NULL); |
|
} |
|
|
|
static int __init dump_ccw_init(void) |
|
{ |
|
int rc; |
|
|
|
dump_block_ccw = (void *) get_zeroed_page(GFP_KERNEL); |
|
if (!dump_block_ccw) |
|
return -ENOMEM; |
|
rc = sysfs_create_group(&dump_kset->kobj, &dump_ccw_attr_group); |
|
if (rc) { |
|
free_page((unsigned long)dump_block_ccw); |
|
return rc; |
|
} |
|
dump_block_ccw->hdr.len = IPL_BP_CCW_LEN; |
|
dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION; |
|
dump_block_ccw->ccw.len = IPL_BP0_CCW_LEN; |
|
dump_block_ccw->ccw.pbt = IPL_PBT_CCW; |
|
dump_capabilities |= DUMP_TYPE_CCW; |
|
return 0; |
|
} |
|
|
|
static int __init dump_fcp_init(void) |
|
{ |
|
int rc; |
|
|
|
if (!sclp_ipl_info.has_dump) |
|
return 0; /* LDIPL DUMP is not installed */ |
|
dump_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); |
|
if (!dump_block_fcp) |
|
return -ENOMEM; |
|
rc = sysfs_create_group(&dump_kset->kobj, &dump_fcp_attr_group); |
|
if (rc) { |
|
free_page((unsigned long)dump_block_fcp); |
|
return rc; |
|
} |
|
dump_block_fcp->hdr.len = IPL_BP_FCP_LEN; |
|
dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION; |
|
dump_block_fcp->fcp.len = IPL_BP0_FCP_LEN; |
|
dump_block_fcp->fcp.pbt = IPL_PBT_FCP; |
|
dump_block_fcp->fcp.opt = IPL_PB0_FCP_OPT_DUMP; |
|
dump_capabilities |= DUMP_TYPE_FCP; |
|
return 0; |
|
} |
|
|
|
static int __init dump_nvme_init(void) |
|
{ |
|
int rc; |
|
|
|
if (!sclp_ipl_info.has_dump) |
|
return 0; /* LDIPL DUMP is not installed */ |
|
dump_block_nvme = (void *) get_zeroed_page(GFP_KERNEL); |
|
if (!dump_block_nvme) |
|
return -ENOMEM; |
|
rc = sysfs_create_group(&dump_kset->kobj, &dump_nvme_attr_group); |
|
if (rc) { |
|
free_page((unsigned long)dump_block_nvme); |
|
return rc; |
|
} |
|
dump_block_nvme->hdr.len = IPL_BP_NVME_LEN; |
|
dump_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION; |
|
dump_block_nvme->fcp.len = IPL_BP0_NVME_LEN; |
|
dump_block_nvme->fcp.pbt = IPL_PBT_NVME; |
|
dump_block_nvme->fcp.opt = IPL_PB0_NVME_OPT_DUMP; |
|
dump_capabilities |= DUMP_TYPE_NVME; |
|
return 0; |
|
} |
|
|
|
static int __init dump_init(void) |
|
{ |
|
int rc; |
|
|
|
dump_kset = kset_create_and_add("dump", NULL, firmware_kobj); |
|
if (!dump_kset) |
|
return -ENOMEM; |
|
rc = sysfs_create_file(&dump_kset->kobj, &dump_type_attr.attr); |
|
if (rc) { |
|
kset_unregister(dump_kset); |
|
return rc; |
|
} |
|
rc = dump_ccw_init(); |
|
if (rc) |
|
return rc; |
|
rc = dump_fcp_init(); |
|
if (rc) |
|
return rc; |
|
rc = dump_nvme_init(); |
|
if (rc) |
|
return rc; |
|
dump_set_type(DUMP_TYPE_NONE); |
|
return 0; |
|
} |
|
|
|
static struct shutdown_action __refdata dump_action = { |
|
.name = SHUTDOWN_ACTION_DUMP_STR, |
|
.fn = dump_run, |
|
.init = dump_init, |
|
}; |
|
|
|
static void dump_reipl_run(struct shutdown_trigger *trigger) |
|
{ |
|
unsigned long ipib = (unsigned long) reipl_block_actual; |
|
unsigned int csum; |
|
|
|
csum = (__force unsigned int) |
|
csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0); |
|
mem_assign_absolute(S390_lowcore.ipib, ipib); |
|
mem_assign_absolute(S390_lowcore.ipib_checksum, csum); |
|
dump_run(trigger); |
|
} |
|
|
|
static struct shutdown_action __refdata dump_reipl_action = { |
|
.name = SHUTDOWN_ACTION_DUMP_REIPL_STR, |
|
.fn = dump_reipl_run, |
|
}; |
|
|
|
/* |
|
* vmcmd shutdown action: Trigger vm command on shutdown. |
|
*/ |
|
|
|
static char vmcmd_on_reboot[128]; |
|
static char vmcmd_on_panic[128]; |
|
static char vmcmd_on_halt[128]; |
|
static char vmcmd_on_poff[128]; |
|
static char vmcmd_on_restart[128]; |
|
|
|
DEFINE_IPL_ATTR_STR_RW(vmcmd, on_reboot, "%s\n", "%s\n", vmcmd_on_reboot); |
|
DEFINE_IPL_ATTR_STR_RW(vmcmd, on_panic, "%s\n", "%s\n", vmcmd_on_panic); |
|
DEFINE_IPL_ATTR_STR_RW(vmcmd, on_halt, "%s\n", "%s\n", vmcmd_on_halt); |
|
DEFINE_IPL_ATTR_STR_RW(vmcmd, on_poff, "%s\n", "%s\n", vmcmd_on_poff); |
|
DEFINE_IPL_ATTR_STR_RW(vmcmd, on_restart, "%s\n", "%s\n", vmcmd_on_restart); |
|
|
|
static struct attribute *vmcmd_attrs[] = { |
|
&sys_vmcmd_on_reboot_attr.attr, |
|
&sys_vmcmd_on_panic_attr.attr, |
|
&sys_vmcmd_on_halt_attr.attr, |
|
&sys_vmcmd_on_poff_attr.attr, |
|
&sys_vmcmd_on_restart_attr.attr, |
|
NULL, |
|
}; |
|
|
|
static struct attribute_group vmcmd_attr_group = { |
|
.attrs = vmcmd_attrs, |
|
}; |
|
|
|
static struct kset *vmcmd_kset; |
|
|
|
static void vmcmd_run(struct shutdown_trigger *trigger) |
|
{ |
|
char *cmd; |
|
|
|
if (strcmp(trigger->name, ON_REIPL_STR) == 0) |
|
cmd = vmcmd_on_reboot; |
|
else if (strcmp(trigger->name, ON_PANIC_STR) == 0) |
|
cmd = vmcmd_on_panic; |
|
else if (strcmp(trigger->name, ON_HALT_STR) == 0) |
|
cmd = vmcmd_on_halt; |
|
else if (strcmp(trigger->name, ON_POFF_STR) == 0) |
|
cmd = vmcmd_on_poff; |
|
else if (strcmp(trigger->name, ON_RESTART_STR) == 0) |
|
cmd = vmcmd_on_restart; |
|
else |
|
return; |
|
|
|
if (strlen(cmd) == 0) |
|
return; |
|
__cpcmd(cmd, NULL, 0, NULL); |
|
} |
|
|
|
static int vmcmd_init(void) |
|
{ |
|
if (!MACHINE_IS_VM) |
|
return -EOPNOTSUPP; |
|
vmcmd_kset = kset_create_and_add("vmcmd", NULL, firmware_kobj); |
|
if (!vmcmd_kset) |
|
return -ENOMEM; |
|
return sysfs_create_group(&vmcmd_kset->kobj, &vmcmd_attr_group); |
|
} |
|
|
|
static struct shutdown_action vmcmd_action = {SHUTDOWN_ACTION_VMCMD_STR, |
|
vmcmd_run, vmcmd_init}; |
|
|
|
/* |
|
* stop shutdown action: Stop Linux on shutdown. |
|
*/ |
|
|
|
static void stop_run(struct shutdown_trigger *trigger) |
|
{ |
|
if (strcmp(trigger->name, ON_PANIC_STR) == 0 || |
|
strcmp(trigger->name, ON_RESTART_STR) == 0) |
|
disabled_wait(); |
|
smp_stop_cpu(); |
|
} |
|
|
|
static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, |
|
stop_run, NULL}; |
|
|
|
/* action list */ |
|
|
|
static struct shutdown_action *shutdown_actions_list[] = { |
|
&ipl_action, &reipl_action, &dump_reipl_action, &dump_action, |
|
&vmcmd_action, &stop_action}; |
|
#define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) |
|
|
|
/* |
|
* Trigger section |
|
*/ |
|
|
|
static struct kset *shutdown_actions_kset; |
|
|
|
static int set_trigger(const char *buf, struct shutdown_trigger *trigger, |
|
size_t len) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
|
if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { |
|
if (shutdown_actions_list[i]->init_rc) { |
|
return shutdown_actions_list[i]->init_rc; |
|
} else { |
|
trigger->action = shutdown_actions_list[i]; |
|
return len; |
|
} |
|
} |
|
} |
|
return -EINVAL; |
|
} |
|
|
|
/* on reipl */ |
|
|
|
static struct shutdown_trigger on_reboot_trigger = {ON_REIPL_STR, |
|
&reipl_action}; |
|
|
|
static ssize_t on_reboot_show(struct kobject *kobj, |
|
struct kobj_attribute *attr, char *page) |
|
{ |
|
return sprintf(page, "%s\n", on_reboot_trigger.action->name); |
|
} |
|
|
|
static ssize_t on_reboot_store(struct kobject *kobj, |
|
struct kobj_attribute *attr, |
|
const char *buf, size_t len) |
|
{ |
|
return set_trigger(buf, &on_reboot_trigger, len); |
|
} |
|
static struct kobj_attribute on_reboot_attr = __ATTR_RW(on_reboot); |
|
|
|
static void do_machine_restart(char *__unused) |
|
{ |
|
smp_send_stop(); |
|
on_reboot_trigger.action->fn(&on_reboot_trigger); |
|
reipl_run(NULL); |
|
} |
|
void (*_machine_restart)(char *command) = do_machine_restart; |
|
|
|
/* on panic */ |
|
|
|
static struct shutdown_trigger on_panic_trigger = {ON_PANIC_STR, &stop_action}; |
|
|
|
static ssize_t on_panic_show(struct kobject *kobj, |
|
struct kobj_attribute *attr, char *page) |
|
{ |
|
return sprintf(page, "%s\n", on_panic_trigger.action->name); |
|
} |
|
|
|
static ssize_t on_panic_store(struct kobject *kobj, |
|
struct kobj_attribute *attr, |
|
const char *buf, size_t len) |
|
{ |
|
return set_trigger(buf, &on_panic_trigger, len); |
|
} |
|
static struct kobj_attribute on_panic_attr = __ATTR_RW(on_panic); |
|
|
|
static void do_panic(void) |
|
{ |
|
lgr_info_log(); |
|
on_panic_trigger.action->fn(&on_panic_trigger); |
|
stop_run(&on_panic_trigger); |
|
} |
|
|
|
/* on restart */ |
|
|
|
static struct shutdown_trigger on_restart_trigger = {ON_RESTART_STR, |
|
&stop_action}; |
|
|
|
static ssize_t on_restart_show(struct kobject *kobj, |
|
struct kobj_attribute *attr, char *page) |
|
{ |
|
return sprintf(page, "%s\n", on_restart_trigger.action->name); |
|
} |
|
|
|
static ssize_t on_restart_store(struct kobject *kobj, |
|
struct kobj_attribute *attr, |
|
const char *buf, size_t len) |
|
{ |
|
return set_trigger(buf, &on_restart_trigger, len); |
|
} |
|
static struct kobj_attribute on_restart_attr = __ATTR_RW(on_restart); |
|
|
|
static void __do_restart(void *ignore) |
|
{ |
|
smp_send_stop(); |
|
#ifdef CONFIG_CRASH_DUMP |
|
crash_kexec(NULL); |
|
#endif |
|
on_restart_trigger.action->fn(&on_restart_trigger); |
|
stop_run(&on_restart_trigger); |
|
} |
|
|
|
void do_restart(void *arg) |
|
{ |
|
tracing_off(); |
|
debug_locks_off(); |
|
lgr_info_log(); |
|
smp_call_online_cpu(__do_restart, arg); |
|
} |
|
|
|
/* on halt */ |
|
|
|
static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action}; |
|
|
|
static ssize_t on_halt_show(struct kobject *kobj, |
|
struct kobj_attribute *attr, char *page) |
|
{ |
|
return sprintf(page, "%s\n", on_halt_trigger.action->name); |
|
} |
|
|
|
static ssize_t on_halt_store(struct kobject *kobj, |
|
struct kobj_attribute *attr, |
|
const char *buf, size_t len) |
|
{ |
|
return set_trigger(buf, &on_halt_trigger, len); |
|
} |
|
static struct kobj_attribute on_halt_attr = __ATTR_RW(on_halt); |
|
|
|
static void do_machine_halt(void) |
|
{ |
|
smp_send_stop(); |
|
on_halt_trigger.action->fn(&on_halt_trigger); |
|
stop_run(&on_halt_trigger); |
|
} |
|
void (*_machine_halt)(void) = do_machine_halt; |
|
|
|
/* on power off */ |
|
|
|
static struct shutdown_trigger on_poff_trigger = {ON_POFF_STR, &stop_action}; |
|
|
|
static ssize_t on_poff_show(struct kobject *kobj, |
|
struct kobj_attribute *attr, char *page) |
|
{ |
|
return sprintf(page, "%s\n", on_poff_trigger.action->name); |
|
} |
|
|
|
static ssize_t on_poff_store(struct kobject *kobj, |
|
struct kobj_attribute *attr, |
|
const char *buf, size_t len) |
|
{ |
|
return set_trigger(buf, &on_poff_trigger, len); |
|
} |
|
static struct kobj_attribute on_poff_attr = __ATTR_RW(on_poff); |
|
|
|
static void do_machine_power_off(void) |
|
{ |
|
smp_send_stop(); |
|
on_poff_trigger.action->fn(&on_poff_trigger); |
|
stop_run(&on_poff_trigger); |
|
} |
|
void (*_machine_power_off)(void) = do_machine_power_off; |
|
|
|
static struct attribute *shutdown_action_attrs[] = { |
|
&on_restart_attr.attr, |
|
&on_reboot_attr.attr, |
|
&on_panic_attr.attr, |
|
&on_halt_attr.attr, |
|
&on_poff_attr.attr, |
|
NULL, |
|
}; |
|
|
|
static struct attribute_group shutdown_action_attr_group = { |
|
.attrs = shutdown_action_attrs, |
|
}; |
|
|
|
static void __init shutdown_triggers_init(void) |
|
{ |
|
shutdown_actions_kset = kset_create_and_add("shutdown_actions", NULL, |
|
firmware_kobj); |
|
if (!shutdown_actions_kset) |
|
goto fail; |
|
if (sysfs_create_group(&shutdown_actions_kset->kobj, |
|
&shutdown_action_attr_group)) |
|
goto fail; |
|
return; |
|
fail: |
|
panic("shutdown_triggers_init failed\n"); |
|
} |
|
|
|
static void __init shutdown_actions_init(void) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { |
|
if (!shutdown_actions_list[i]->init) |
|
continue; |
|
shutdown_actions_list[i]->init_rc = |
|
shutdown_actions_list[i]->init(); |
|
} |
|
} |
|
|
|
static int __init s390_ipl_init(void) |
|
{ |
|
char str[8] = {0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40}; |
|
|
|
sclp_early_get_ipl_info(&sclp_ipl_info); |
|
/* |
|
* Fix loadparm: There are systems where the (SCSI) LOADPARM |
|
* returned by read SCP info is invalid (contains EBCDIC blanks) |
|
* when the system has been booted via diag308. In that case we use |
|
* the value from diag308, if available. |
|
* |
|
* There are also systems where diag308 store does not work in |
|
* case the system is booted from HMC. Fortunately in this case |
|
* READ SCP info provides the correct value. |
|
*/ |
|
if (memcmp(sclp_ipl_info.loadparm, str, sizeof(str)) == 0 && ipl_block_valid) |
|
memcpy(sclp_ipl_info.loadparm, ipl_block.ccw.loadparm, LOADPARM_LEN); |
|
shutdown_actions_init(); |
|
shutdown_triggers_init(); |
|
return 0; |
|
} |
|
|
|
__initcall(s390_ipl_init); |
|
|
|
static void __init strncpy_skip_quote(char *dst, char *src, int n) |
|
{ |
|
int sx, dx; |
|
|
|
dx = 0; |
|
for (sx = 0; src[sx] != 0; sx++) { |
|
if (src[sx] == '"') |
|
continue; |
|
dst[dx++] = src[sx]; |
|
if (dx >= n) |
|
break; |
|
} |
|
} |
|
|
|
static int __init vmcmd_on_reboot_setup(char *str) |
|
{ |
|
if (!MACHINE_IS_VM) |
|
return 1; |
|
strncpy_skip_quote(vmcmd_on_reboot, str, 127); |
|
vmcmd_on_reboot[127] = 0; |
|
on_reboot_trigger.action = &vmcmd_action; |
|
return 1; |
|
} |
|
__setup("vmreboot=", vmcmd_on_reboot_setup); |
|
|
|
static int __init vmcmd_on_panic_setup(char *str) |
|
{ |
|
if (!MACHINE_IS_VM) |
|
return 1; |
|
strncpy_skip_quote(vmcmd_on_panic, str, 127); |
|
vmcmd_on_panic[127] = 0; |
|
on_panic_trigger.action = &vmcmd_action; |
|
return 1; |
|
} |
|
__setup("vmpanic=", vmcmd_on_panic_setup); |
|
|
|
static int __init vmcmd_on_halt_setup(char *str) |
|
{ |
|
if (!MACHINE_IS_VM) |
|
return 1; |
|
strncpy_skip_quote(vmcmd_on_halt, str, 127); |
|
vmcmd_on_halt[127] = 0; |
|
on_halt_trigger.action = &vmcmd_action; |
|
return 1; |
|
} |
|
__setup("vmhalt=", vmcmd_on_halt_setup); |
|
|
|
static int __init vmcmd_on_poff_setup(char *str) |
|
{ |
|
if (!MACHINE_IS_VM) |
|
return 1; |
|
strncpy_skip_quote(vmcmd_on_poff, str, 127); |
|
vmcmd_on_poff[127] = 0; |
|
on_poff_trigger.action = &vmcmd_action; |
|
return 1; |
|
} |
|
__setup("vmpoff=", vmcmd_on_poff_setup); |
|
|
|
static int on_panic_notify(struct notifier_block *self, |
|
unsigned long event, void *data) |
|
{ |
|
do_panic(); |
|
return NOTIFY_OK; |
|
} |
|
|
|
static struct notifier_block on_panic_nb = { |
|
.notifier_call = on_panic_notify, |
|
.priority = INT_MIN, |
|
}; |
|
|
|
void __init setup_ipl(void) |
|
{ |
|
BUILD_BUG_ON(sizeof(struct ipl_parameter_block) != PAGE_SIZE); |
|
|
|
ipl_info.type = get_ipl_type(); |
|
switch (ipl_info.type) { |
|
case IPL_TYPE_CCW: |
|
ipl_info.data.ccw.dev_id.ssid = ipl_block.ccw.ssid; |
|
ipl_info.data.ccw.dev_id.devno = ipl_block.ccw.devno; |
|
break; |
|
case IPL_TYPE_FCP: |
|
case IPL_TYPE_FCP_DUMP: |
|
ipl_info.data.fcp.dev_id.ssid = 0; |
|
ipl_info.data.fcp.dev_id.devno = ipl_block.fcp.devno; |
|
ipl_info.data.fcp.wwpn = ipl_block.fcp.wwpn; |
|
ipl_info.data.fcp.lun = ipl_block.fcp.lun; |
|
break; |
|
case IPL_TYPE_NVME: |
|
case IPL_TYPE_NVME_DUMP: |
|
ipl_info.data.nvme.fid = ipl_block.nvme.fid; |
|
ipl_info.data.nvme.nsid = ipl_block.nvme.nsid; |
|
break; |
|
case IPL_TYPE_NSS: |
|
case IPL_TYPE_UNKNOWN: |
|
/* We have no info to copy */ |
|
break; |
|
} |
|
atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); |
|
} |
|
|
|
void s390_reset_system(void) |
|
{ |
|
/* Disable prefixing */ |
|
set_prefix(0); |
|
|
|
/* Disable lowcore protection */ |
|
__ctl_clear_bit(0, 28); |
|
diag_amode31_ops.diag308_reset(); |
|
} |
|
|
|
#ifdef CONFIG_KEXEC_FILE |
|
|
|
int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf, |
|
unsigned char flags, unsigned short cert) |
|
{ |
|
struct ipl_report_component *comp; |
|
|
|
comp = vzalloc(sizeof(*comp)); |
|
if (!comp) |
|
return -ENOMEM; |
|
list_add_tail(&comp->list, &report->components); |
|
|
|
comp->entry.addr = kbuf->mem; |
|
comp->entry.len = kbuf->memsz; |
|
comp->entry.flags = flags; |
|
comp->entry.certificate_index = cert; |
|
|
|
report->size += sizeof(comp->entry); |
|
|
|
return 0; |
|
} |
|
|
|
int ipl_report_add_certificate(struct ipl_report *report, void *key, |
|
unsigned long addr, unsigned long len) |
|
{ |
|
struct ipl_report_certificate *cert; |
|
|
|
cert = vzalloc(sizeof(*cert)); |
|
if (!cert) |
|
return -ENOMEM; |
|
list_add_tail(&cert->list, &report->certificates); |
|
|
|
cert->entry.addr = addr; |
|
cert->entry.len = len; |
|
cert->key = key; |
|
|
|
report->size += sizeof(cert->entry); |
|
report->size += cert->entry.len; |
|
|
|
return 0; |
|
} |
|
|
|
struct ipl_report *ipl_report_init(struct ipl_parameter_block *ipib) |
|
{ |
|
struct ipl_report *report; |
|
|
|
report = vzalloc(sizeof(*report)); |
|
if (!report) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
report->ipib = ipib; |
|
INIT_LIST_HEAD(&report->components); |
|
INIT_LIST_HEAD(&report->certificates); |
|
|
|
report->size = ALIGN(ipib->hdr.len, 8); |
|
report->size += sizeof(struct ipl_rl_hdr); |
|
report->size += sizeof(struct ipl_rb_components); |
|
report->size += sizeof(struct ipl_rb_certificates); |
|
|
|
return report; |
|
} |
|
|
|
void *ipl_report_finish(struct ipl_report *report) |
|
{ |
|
struct ipl_report_certificate *cert; |
|
struct ipl_report_component *comp; |
|
struct ipl_rb_certificates *certs; |
|
struct ipl_parameter_block *ipib; |
|
struct ipl_rb_components *comps; |
|
struct ipl_rl_hdr *rl_hdr; |
|
void *buf, *ptr; |
|
|
|
buf = vzalloc(report->size); |
|
if (!buf) |
|
goto out; |
|
ptr = buf; |
|
|
|
memcpy(ptr, report->ipib, report->ipib->hdr.len); |
|
ipib = ptr; |
|
if (ipl_secure_flag) |
|
ipib->hdr.flags |= IPL_PL_FLAG_SIPL; |
|
ipib->hdr.flags |= IPL_PL_FLAG_IPLSR; |
|
ptr += report->ipib->hdr.len; |
|
ptr = PTR_ALIGN(ptr, 8); |
|
|
|
rl_hdr = ptr; |
|
ptr += sizeof(*rl_hdr); |
|
|
|
comps = ptr; |
|
comps->rbt = IPL_RBT_COMPONENTS; |
|
ptr += sizeof(*comps); |
|
list_for_each_entry(comp, &report->components, list) { |
|
memcpy(ptr, &comp->entry, sizeof(comp->entry)); |
|
ptr += sizeof(comp->entry); |
|
} |
|
comps->len = ptr - (void *)comps; |
|
|
|
certs = ptr; |
|
certs->rbt = IPL_RBT_CERTIFICATES; |
|
ptr += sizeof(*certs); |
|
list_for_each_entry(cert, &report->certificates, list) { |
|
memcpy(ptr, &cert->entry, sizeof(cert->entry)); |
|
ptr += sizeof(cert->entry); |
|
} |
|
certs->len = ptr - (void *)certs; |
|
rl_hdr->len = ptr - (void *)rl_hdr; |
|
|
|
list_for_each_entry(cert, &report->certificates, list) { |
|
memcpy(ptr, cert->key, cert->entry.len); |
|
ptr += cert->entry.len; |
|
} |
|
|
|
BUG_ON(ptr > buf + report->size); |
|
out: |
|
return buf; |
|
} |
|
|
|
int ipl_report_free(struct ipl_report *report) |
|
{ |
|
struct ipl_report_component *comp, *ncomp; |
|
struct ipl_report_certificate *cert, *ncert; |
|
|
|
list_for_each_entry_safe(comp, ncomp, &report->components, list) |
|
vfree(comp); |
|
|
|
list_for_each_entry_safe(cert, ncert, &report->certificates, list) |
|
vfree(cert); |
|
|
|
vfree(report); |
|
|
|
return 0; |
|
} |
|
|
|
#endif
|
|
|