From: Hans-Joachim Picht <hpicht@redhat.com>
Date: Thu, 12 Mar 2009 15:22:51 +0100
Subject: [s390] kernel: Shutdown Actions Interface
Message-id: 20090312142251.GE5103@redhat.com
O-Subject: [RHEL5 U4 PATCH 4/20] FEAT: s390 - kernel: Shutdown Actions Interface
Bugzilla: 475563
Description
============
The new shutdown actions interface allows to specify for each
shutdown trigger (halt, power off, reboot, panic) one of the
five available shutdown actions (stop, ipl, reipl, dump, vmcmd).
A sysfs interface under /sys/firmware is provided for that
purpose. Possible use cases are e.g. to specify that a vmdump
should be automatically triggered in case of a kernel panic or
the z/VM logoff command should be executed on halt.
Bugzilla
=========
BZ 475563
https://bugzilla.redhat.com/show_bug.cgi?id=475563
Upstream status of the patch:
=============================
The patch is upstream as of git commit
99ca4e582d4a4088969681efff97be44d98421a1
Test status:
============
The patch has been tested by the IBM test department.
Please ACK.
With best regards,
--Hans
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index ec329ae..e2b3c14 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -290,13 +290,6 @@ ipl_schib:
.long 0
.endr
- .globl ipl_flags
-ipl_flags:
- .long 0
- .globl ipl_devno
-ipl_devno:
- .word 0
-
.org 0x12000
.globl s390_readinfo_sccb
s390_readinfo_sccb:
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 47ebd9f..37b2831 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -47,7 +47,7 @@ startup_continue:
tm 0xb9,0x01 # test if subchannel is enabled
jno .nodump # subchannel disabled
l %r1,0xb8
- la %r5,.Lipl_schib-.LPG1(%r13)
+ la %r5,ipl_schib-.LPG1(%r13)
stsch 0(%r5) # get schib of subchannel
jne .nodump # schib not available
tm 5(%r5),0x01 # devno valid?
@@ -362,12 +362,6 @@ ipl_schib:
.rept 13
.long 0
.endr
- .globl ipl_flags
-ipl_flags:
- .long 0
- .globl ipl_devno
-ipl_devno:
- .word 0
.org 0x12000
.globl s390_readinfo_sccb
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 7c199d0..9278e87 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -2,7 +2,7 @@
* arch/s390/kernel/ipl.c
* ipl/reipl/dump support for Linux on s390.
*
- * Copyright (C) IBM Corp. 2005,2006
+ * Copyright IBM Corp. 2005,2008
* Author(s): Michael Holzheu <holzheu@de.ibm.com>
* Heiko Carstens <heiko.carstens@de.ibm.com>
* Volker Sameske <sameske@de.ibm.com>
@@ -14,15 +14,16 @@
#include <linux/delay.h>
#include <linux/reboot.h>
#include <linux/ctype.h>
+#include <linux/fs.h>
#include <asm/ipl.h>
#include <asm/smp.h>
#include <asm/setup.h>
#include <asm/cpcmd.h>
#include <asm/cio.h>
#include <asm/ebcdic.h>
+#include <asm/setup.h>
#define IPL_PARM_BLOCK_VERSION 0
-#define LOADPARM_LEN 8
extern char s390_readinfo_sccb[];
#define SCCB_VALID (*((__u16*)&s390_readinfo_sccb[6]) == 0x0010)
@@ -32,8 +33,47 @@ extern char s390_readinfo_sccb[];
#define IPL_UNKNOWN_STR "unknown"
#define IPL_CCW_STR "ccw"
#define IPL_FCP_STR "fcp"
-#define IPL_NSS_STR "nss"
#define IPL_FCP_DUMP_STR "fcp_dump"
+#define IPL_NSS_STR "nss"
+
+#define DUMP_CCW_STR "ccw"
+#define DUMP_FCP_STR "fcp"
+#define DUMP_NONE_STR "none"
+
+#define LOADPARM_LEN 8
+
+/*
+ * Four shutdown trigger types are supported:
+ * - panic
+ * - halt
+ * - power off
+ * - reipl
+ */
+#define ON_PANIC_STR "on_panic"
+#define ON_HALT_STR "on_halt"
+#define ON_POFF_STR "on_poff"
+#define ON_REIPL_STR "on_reboot"
+
+struct shutdown_action;
+struct shutdown_trigger {
+ char *name;
+ struct shutdown_action *action;
+};
+
+/*
+ * Five 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"
+
+struct shutdown_action {
+ char *name;
+ void (*fn) (struct shutdown_trigger *trigger);
+ int (*init) (void);
+};
static char *ipl_type_str(enum ipl_type type)
{
@@ -58,10 +98,6 @@ enum dump_type {
DUMP_TYPE_FCP = 4,
};
-#define DUMP_NONE_STR "none"
-#define DUMP_CCW_STR "ccw"
-#define DUMP_FCP_STR "fcp"
-
static char *dump_type_str(enum dump_type type)
{
switch (type) {
@@ -76,6 +112,13 @@ static char *dump_type_str(enum dump_type type)
}
}
+/*
+ * Must be in data section since the bss section
+ * is not cleared when these are accessed.
+ */
+static u16 ipl_devno __attribute__((__section__(".data"))) = 0;
+u32 ipl_flags __attribute__((__section__(".data"))) = 0;
+
enum ipl_method {
REIPL_METHOD_CCW_CIO,
REIPL_METHOD_CCW_DIAG,
@@ -83,8 +126,9 @@ enum ipl_method {
REIPL_METHOD_FCP_RO_DIAG,
REIPL_METHOD_FCP_RW_DIAG,
REIPL_METHOD_FCP_RO_VM,
- REIPL_METHOD_NSS,
REIPL_METHOD_FCP_DUMP,
+ REIPL_METHOD_NSS,
+ REIPL_METHOD_NSS_DIAG,
REIPL_METHOD_DEFAULT,
};
@@ -96,40 +140,17 @@ enum dump_method {
DUMP_METHOD_FCP_DIAG,
};
-enum shutdown_action {
- SHUTDOWN_REIPL,
- SHUTDOWN_DUMP,
- SHUTDOWN_STOP,
-};
-
-#define SHUTDOWN_REIPL_STR "reipl"
-#define SHUTDOWN_DUMP_STR "dump"
-#define SHUTDOWN_STOP_STR "stop"
-
-static char *shutdown_action_str(enum shutdown_action action)
-{
- switch (action) {
- case SHUTDOWN_REIPL:
- return SHUTDOWN_REIPL_STR;
- case SHUTDOWN_DUMP:
- return SHUTDOWN_DUMP_STR;
- case SHUTDOWN_STOP:
- return SHUTDOWN_STOP_STR;
- default:
- BUG();
- }
-}
-
static int diag308_set_works = 0;
+static struct ipl_parameter_block ipl_block;
+
static int reipl_capabilities = IPL_TYPE_UNKNOWN;
static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN;
static enum ipl_method reipl_method = REIPL_METHOD_DEFAULT;
static struct ipl_parameter_block *reipl_block_fcp;
static struct ipl_parameter_block *reipl_block_ccw;
-
-static char reipl_nss_name[NSS_NAME_SIZE + 1];
+static struct ipl_parameter_block *reipl_block_nss;
static int dump_capabilities = DUMP_TYPE_NONE;
static enum dump_type dump_type = DUMP_TYPE_NONE;
@@ -137,28 +158,17 @@ static enum dump_method dump_method = DUMP_METHOD_NONE;
static struct ipl_parameter_block *dump_block_fcp;
static struct ipl_parameter_block *dump_block_ccw;
-static enum shutdown_action on_panic_action = SHUTDOWN_STOP;
-
int diag308(unsigned long subcode, void *addr)
{
register unsigned long _addr asm("0") = (unsigned long) addr;
register unsigned long _rc asm("1") = 0;
- asm volatile (
- " diag %0,%2,0x308\n"
- "0: \n"
- ".section __ex_table,\"a\"\n"
-#ifdef CONFIG_64BIT
- " .align 8\n"
- " .quad 0b, 0b\n"
-#else
- " .align 4\n"
- " .long 0b, 0b\n"
-#endif
- ".previous\n"
+ asm volatile(
+ " diag %0,%2,0x308\n"
+ "0:\n"
+ EX_TABLE(0b,0b)
: "+d" (_addr), "+d" (_rc)
- : "d" (subcode) : "cc", "memory" );
-
+ : "d" (subcode) : "cc", "memory");
return _rc;
}
EXPORT_SYMBOL_GPL(diag308);
@@ -204,9 +214,9 @@ static ssize_t sys_##_prefix##_##_name##_show(struct subsystem *subsys, \
static ssize_t sys_##_prefix##_##_name##_store(struct subsystem *subsys,\
const char *buf, size_t len) \
{ \
- if (sscanf(buf, _fmt_in, _value) != 1) \
- return -EINVAL; \
- return len; \
+ strncpy(_value, buf, sizeof(_value) - 1); \
+ strstrip(_value); \
+ return len; \
} \
static struct subsys_attribute sys_##_prefix##_##_name##_attr = \
__ATTR(_name,(S_IRUGO | S_IWUSR), \
@@ -225,7 +235,7 @@ static void make_attrs_ro(struct attribute **attrs)
* ipl section
*/
-static enum ipl_type get_ipl_type(void)
+static __init enum ipl_type get_ipl_type(void)
{
struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
@@ -244,32 +254,9 @@ static enum ipl_type get_ipl_type(void)
return IPL_TYPE_FCP;
}
-void __init setup_ipl_info(void)
-{
- ipl_info.type = get_ipl_type();
- switch (ipl_info.type) {
- case IPL_TYPE_CCW:
- ipl_info.data.ccw.dev_id.devno = ipl_devno;
- ipl_info.data.ccw.dev_id.ssid = 0;
- break;
- case IPL_TYPE_FCP:
- case IPL_TYPE_FCP_DUMP:
- ipl_info.data.fcp.dev_id.devno =
- IPL_PARMBLOCK_START->ipl_info.fcp.devno;
- ipl_info.data.fcp.dev_id.ssid = 0;
- ipl_info.data.fcp.wwpn = IPL_PARMBLOCK_START->ipl_info.fcp.wwpn;
- ipl_info.data.fcp.lun = IPL_PARMBLOCK_START->ipl_info.fcp.lun;
- break;
- case IPL_TYPE_NSS:
- case IPL_TYPE_UNKNOWN:
- default:
- /* We have no info to copy */
- break;
- }
-}
-
struct ipl_info ipl_info;
EXPORT_SYMBOL_GPL(ipl_info);
+
static ssize_t ipl_type_show(struct subsystem *subsys, char *page)
{
return sprintf(page, "%s\n", ipl_type_str(ipl_info.type));
@@ -277,6 +264,54 @@ static ssize_t ipl_type_show(struct subsystem *subsys, char *page)
static struct subsys_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type);
+/* VM IPL PARM routines */
+static void reipl_get_ascii_vmparm(char *dest,
+ const struct ipl_parameter_block *ipb)
+{
+ int i;
+ int len = 0;
+ char has_lowercase = 0;
+
+ if ((ipb->ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID) &&
+ (ipb->ipl_info.ccw.vm_parm_len > 0)) {
+
+ len = ipb->ipl_info.ccw.vm_parm_len;
+ memcpy(dest, ipb->ipl_info.ccw.vm_parm, len);
+ /* If at least one character is lowercase, we assume mixed
+ * case; otherwise we convert everything to lowercase.
+ */
+ for (i = 0; i < len; i++)
+ if ((dest[i] > 0x80 && dest[i] < 0x8a) || /* a-i */
+ (dest[i] > 0x90 && dest[i] < 0x9a) || /* j-r */
+ (dest[i] > 0xa1 && dest[i] < 0xaa)) { /* s-z */
+ has_lowercase = 1;
+ break;
+ }
+ if (!has_lowercase)
+ EBC_TOLOWER(dest, len);
+ EBCASC(dest, len);
+ }
+ dest[len] = 0;
+}
+
+void get_ipl_vmparm(char *dest)
+{
+ if (diag308_set_works && (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_CCW))
+ reipl_get_ascii_vmparm(dest, &ipl_block);
+ else
+ dest[0] = 0;
+}
+
+static ssize_t parm_show(struct subsystem *subsys, char *page)
+{
+ char parm[DIAG308_VMPARM_SIZE + 1] = {};
+
+ get_ipl_vmparm(parm);
+ return sprintf(page, "%s\n", parm);
+}
+
+static struct subsys_attribute sys_ipl_vm_parm_attr = __ATTR_RO(parm);
+
static ssize_t sys_ipl_device_show(struct subsystem *subsys, char *page)
{
struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
@@ -384,15 +419,27 @@ static ssize_t ipl_ccw_loadparm_show(struct subsystem *subsys, char *page)
static struct subsys_attribute sys_ipl_ccw_loadparm_attr =
__ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL);
-static struct attribute *ipl_ccw_attrs[] = {
+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,
NULL,
};
-static struct attribute_group ipl_ccw_attr_group = {
- .attrs = ipl_ccw_attrs,
+static struct attribute *ipl_ccw_attrs_lpar[] = {
+ &sys_ipl_type_attr.attr,
+ &sys_ipl_device_attr.attr,
+ &sys_ipl_ccw_loadparm_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
};
/* NSS ipl device attributes */
@@ -402,6 +449,8 @@ DEFINE_IPL_ATTR_RO(ipl_nss, name, "%s\n", kernel_nss_name);
static struct attribute *ipl_nss_attrs[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_nss_name_attr.attr,
+ &sys_ipl_ccw_loadparm_attr.attr,
+ &sys_ipl_vm_parm_attr.attr,
NULL,
};
@@ -422,10 +471,157 @@ static struct attribute_group ipl_unknown_attr_group = {
static decl_subsys(ipl, NULL, NULL);
+static int __init ipl_register_fcp_files(void)
+{
+ int rc;
+
+ rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+ &ipl_fcp_attr_group);
+ if (rc)
+ goto out;
+ rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
+ &ipl_parameter_attr);
+ if (rc)
+ goto out_ipl_parm;
+ rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
+ &ipl_scp_data_attr);
+ if (!rc)
+ goto out;
+
+ sysfs_remove_bin_file(&ipl_subsys.kset.kobj, &ipl_parameter_attr);
+
+out_ipl_parm:
+ sysfs_remove_group(&ipl_subsys.kset.kobj, &ipl_fcp_attr_group);
+out:
+ return rc;
+}
+
+static void ipl_run(struct shutdown_trigger *trigger)
+{
+ diag308(DIAG308_IPL, NULL);
+ if (MACHINE_IS_VM)
+ __cpcmd("IPL", NULL, 0, NULL);
+ else if (ipl_info.type == IPL_TYPE_CCW)
+ reipl_ccw_dev(&ipl_info.data.ccw.dev_id);
+}
+
+static int __init ipl_init(void)
+{
+ int rc;
+
+ rc = firmware_register(&ipl_subsys);
+ if (rc)
+ return rc;
+ switch (ipl_info.type) {
+ case IPL_TYPE_CCW:
+ if (MACHINE_IS_VM)
+ rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+ &ipl_ccw_attr_group_vm);
+ else
+ rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+ &ipl_ccw_attr_group_lpar);
+ break;
+ case IPL_TYPE_FCP:
+ case IPL_TYPE_FCP_DUMP:
+ rc = ipl_register_fcp_files();
+ break;
+ case IPL_TYPE_NSS:
+ rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+ &ipl_nss_attr_group);
+ break;
+ default:
+ rc = sysfs_create_group(&ipl_subsys.kset.kobj,
+ &ipl_unknown_attr_group);
+ break;
+ }
+ if (rc)
+ firmware_unregister(&ipl_subsys);
+ return rc;
+}
+
+static struct shutdown_action ipl_action = {
+ .name = SHUTDOWN_ACTION_IPL_STR,
+ .fn = ipl_run,
+ .init = ipl_init,
+};
+
/*
- * reipl section
+ * 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] = {};
+
+ reipl_get_ascii_vmparm(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->ipl_info.ccw.vm_parm, 0, DIAG308_VMPARM_SIZE);
+ ipb->ipl_info.ccw.vm_parm_len = ip_len;
+ if (ip_len > 0) {
+ ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID;
+ memcpy(ipb->ipl_info.ccw.vm_parm, buf, ip_len);
+ ASCEBC(ipb->ipl_info.ccw.vm_parm, ip_len);
+ } else {
+ ipb->ipl_info.ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID;
+ }
+
+ return len;
+}
+
+/* NSS wrapper */
+static ssize_t reipl_nss_vmparm_show(struct subsystem *subsys, char *page)
+{
+ return reipl_generic_vmparm_show(reipl_block_nss, page);
+}
+
+static ssize_t reipl_nss_vmparm_store(struct subsystem *subsys,
+ 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 subsystem *subsys, char *page)
+{
+ return reipl_generic_vmparm_show(reipl_block_ccw, page);
+}
+
+static ssize_t reipl_ccw_vmparm_store(struct subsystem *subsys,
+ const char *buf, size_t len)
+{
+ return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len);
+}
+
+static struct subsys_attribute sys_reipl_nss_vmparm_attr =
+ __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show,
+ reipl_nss_vmparm_store);
+static struct subsys_attribute sys_reipl_ccw_vmparm_attr =
+ __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show,
+ reipl_ccw_vmparm_store);
+
/* FCP reipl device attributes */
DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n",
@@ -458,25 +654,26 @@ static struct attribute_group reipl_fcp_attr_group = {
DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
reipl_block_ccw->ipl_info.ccw.devno);
-static void reipl_get_ascii_loadparm(char *loadparm)
+static void reipl_get_ascii_loadparm(char *loadparm,
+ struct ipl_parameter_block *ibp)
{
- memcpy(loadparm, &reipl_block_ccw->ipl_info.ccw.load_param,
- LOADPARM_LEN);
+ memcpy(loadparm, ibp->ipl_info.ccw.load_parm, LOADPARM_LEN);
EBCASC(loadparm, LOADPARM_LEN);
loadparm[LOADPARM_LEN] = 0;
strstrip(loadparm);
}
-static ssize_t reipl_ccw_loadparm_show(struct subsystem *subsys, char *page)
+static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb,
+ char *page)
{
char buf[LOADPARM_LEN + 1];
- reipl_get_ascii_loadparm(buf);
+ reipl_get_ascii_loadparm(buf, ipb);
return sprintf(page, "%s\n", buf);
}
-static ssize_t reipl_ccw_loadparm_store(struct subsystem *subsys,
- const char *buf, size_t len)
+static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb,
+ const char *buf, size_t len)
{
int i, lp_len;
@@ -495,35 +692,122 @@ static ssize_t reipl_ccw_loadparm_store(struct subsystem *subsys,
return -EINVAL;
}
/* initialize loadparm with blanks */
- memset(&reipl_block_ccw->ipl_info.ccw.load_param, ' ', LOADPARM_LEN);
+ memset(ipb->ipl_info.ccw.load_parm, ' ', LOADPARM_LEN);
/* copy and convert to ebcdic */
- memcpy(&reipl_block_ccw->ipl_info.ccw.load_param, buf, lp_len);
- ASCEBC(reipl_block_ccw->ipl_info.ccw.load_param, LOADPARM_LEN);
+ memcpy(ipb->ipl_info.ccw.load_parm, buf, lp_len);
+ ASCEBC(ipb->ipl_info.ccw.load_parm, LOADPARM_LEN);
return len;
}
+/* NSS wrapper */
+static ssize_t reipl_nss_loadparm_show(struct subsystem *subsys, char *page)
+{
+ return reipl_generic_loadparm_show(reipl_block_nss, page);
+}
+
+static ssize_t reipl_nss_loadparm_store(struct subsystem *subsys,
+ 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 subsystem *subsys, char *page)
+{
+ return reipl_generic_loadparm_show(reipl_block_ccw, page);
+}
+
+static ssize_t reipl_ccw_loadparm_store(struct subsystem *subsys,
+ const char *buf, size_t len)
+{
+ return reipl_generic_loadparm_store(reipl_block_ccw, buf, len);
+}
+
static struct subsys_attribute sys_reipl_ccw_loadparm_attr =
- __ATTR(loadparm, 0644, reipl_ccw_loadparm_show,
- reipl_ccw_loadparm_store);
+ __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show,
+ reipl_ccw_loadparm_store);
-static struct attribute *reipl_ccw_attrs[] = {
+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,
NULL,
};
-static struct attribute_group reipl_ccw_attr_group = {
+static struct attribute *reipl_ccw_attrs_lpar[] = {
+ &sys_reipl_ccw_device_attr.attr,
+ &sys_reipl_ccw_loadparm_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,
+ .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->ipl_info.ccw.nss_name, NSS_NAME_SIZE);
+ EBCASC(dst, NSS_NAME_SIZE);
+ dst[NSS_NAME_SIZE] = 0;
+}
+
+static ssize_t reipl_nss_name_show(struct subsystem *subsys, 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 subsystem *subsys,
+ 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->ipl_info.ccw.nss_name, 0x40, NSS_NAME_SIZE);
+ if (nss_len > 0) {
+ reipl_block_nss->ipl_info.ccw.vm_flags |=
+ DIAG308_VM_FLAGS_NSS_VALID;
+ memcpy(reipl_block_nss->ipl_info.ccw.nss_name, buf, nss_len);
+ ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, nss_len);
+ EBC_TOUPPER(reipl_block_nss->ipl_info.ccw.nss_name, nss_len);
+ } else {
+ reipl_block_nss->ipl_info.ccw.vm_flags &=
+ ~DIAG308_VM_FLAGS_NSS_VALID;
+ }
+
+ return len;
+}
+
+static struct subsys_attribute sys_reipl_nss_name_attr =
+ __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show,
+ reipl_nss_name_store);
-DEFINE_IPL_ATTR_STR_RW(reipl_nss, name, "%s\n", "%s\n", reipl_nss_name);
+static struct subsys_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,
};
@@ -541,7 +825,9 @@ static int reipl_set_type(enum ipl_type type)
switch(type) {
case IPL_TYPE_CCW:
- if (MACHINE_IS_VM)
+ if (diag308_set_works)
+ reipl_method = REIPL_METHOD_CCW_DIAG;
+ else if (MACHINE_IS_VM)
reipl_method = REIPL_METHOD_CCW_VM;
else
reipl_method = REIPL_METHOD_CCW_CIO;
@@ -557,12 +843,15 @@ static int reipl_set_type(enum ipl_type type)
case IPL_TYPE_FCP_DUMP:
reipl_method = REIPL_METHOD_FCP_DUMP;
break;
+ case IPL_TYPE_NSS:
+ if (diag308_set_works)
+ reipl_method = REIPL_METHOD_NSS_DIAG;
+ else
+ reipl_method = REIPL_METHOD_NSS;
+ break;
case IPL_TYPE_UNKNOWN:
reipl_method = REIPL_METHOD_DEFAULT;
break;
- case IPL_TYPE_NSS:
- reipl_method = REIPL_METHOD_NSS;
- break;
default:
BUG();
}
@@ -575,8 +864,8 @@ static ssize_t reipl_type_show(struct subsystem *subsys, char *page)
return sprintf(page, "%s\n", ipl_type_str(reipl_type));
}
-static ssize_t reipl_type_store(struct subsystem *subsys, const char *buf,
- size_t len)
+static ssize_t reipl_type_store(struct subsystem *subsys,
+ const char *buf, size_t len)
{
int rc = -EINVAL;
@@ -590,178 +879,52 @@ static ssize_t reipl_type_store(struct subsystem *subsys, const char *buf,
}
static struct subsys_attribute reipl_type_attr =
- __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store);
+ __ATTR(reipl_type, 0644, reipl_type_show, reipl_type_store);
static decl_subsys(reipl, NULL, NULL);
-/*
- * dump section
- */
-
-/* FCP dump device attributes */
-
-DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%016llx\n",
- dump_block_fcp->ipl_info.fcp.wwpn);
-DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n",
- dump_block_fcp->ipl_info.fcp.lun);
-DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
- dump_block_fcp->ipl_info.fcp.bootprog);
-DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n",
- dump_block_fcp->ipl_info.fcp.br_lba);
-DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
- dump_block_fcp->ipl_info.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,
-};
-
-/* CCW dump device attributes */
-
-DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
- dump_block_ccw->ipl_info.ccw.devno);
-
-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,
-};
+static void get_ipl_string(char *dst, struct ipl_parameter_block *ipb,
+ const enum ipl_method m)
+{
+ char loadparm[LOADPARM_LEN + 1] = {};
+ char vmparm[DIAG308_VMPARM_SIZE + 1] = {};
+ char nss_name[NSS_NAME_SIZE + 1] = {};
+ size_t pos = 0;
-/* dump type */
+ reipl_get_ascii_loadparm(loadparm, ipb);
+ reipl_get_ascii_nss_name(nss_name, ipb);
+ reipl_get_ascii_vmparm(vmparm, ipb);
-static int dump_set_type(enum dump_type type)
-{
- if (!(dump_capabilities & type))
- return -EINVAL;
- switch(type) {
- case DUMP_TYPE_CCW:
- if (MACHINE_IS_VM)
- dump_method = DUMP_METHOD_CCW_VM;
- else if (diag308_set_works)
- dump_method = DUMP_METHOD_CCW_DIAG;
- else
- dump_method = DUMP_METHOD_CCW_CIO;
+ switch (m) {
+ case REIPL_METHOD_CCW_VM:
+ pos = sprintf(dst, "IPL %X CLEAR", ipb->ipl_info.ccw.devno);
break;
- case DUMP_TYPE_FCP:
- dump_method = DUMP_METHOD_FCP_DIAG;
+ case REIPL_METHOD_NSS:
+ pos = sprintf(dst, "IPL %s", nss_name);
break;
default:
- dump_method = DUMP_METHOD_NONE;
- }
- dump_type = type;
- return 0;
-}
-
-static ssize_t dump_type_show(struct subsystem *subsys, char *page)
-{
- return sprintf(page, "%s\n", dump_type_str(dump_type));
-}
-
-static ssize_t dump_type_store(struct subsystem *subsys, 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);
- return (rc != 0) ? rc : len;
-}
-
-static struct subsys_attribute dump_type_attr =
- __ATTR(dump_type, 0644, dump_type_show, dump_type_store);
-
-static decl_subsys(dump, NULL, NULL);
-
-#ifdef CONFIG_SMP
-static void dump_smp_stop_all(void)
-{
- int cpu;
- preempt_disable();
- for_each_online_cpu(cpu) {
- if (cpu == smp_processor_id())
- continue;
- while (signal_processor(cpu, sigp_stop) == sigp_busy)
- udelay(10);
+ break;
}
- preempt_enable();
-}
-#else
-#define dump_smp_stop_all() do { } while (0)
-#endif
-
-/*
- * Shutdown actions section
- */
-
-static decl_subsys(shutdown_actions, NULL, NULL);
-
-/* on panic */
-
-static ssize_t on_panic_show(struct subsystem *subsys, char *page)
-{
- return sprintf(page, "%s\n", shutdown_action_str(on_panic_action));
-}
-
-static ssize_t on_panic_store(struct subsystem *subsys, const char *buf,
- size_t len)
-{
- if (strncmp(buf, SHUTDOWN_REIPL_STR, strlen(SHUTDOWN_REIPL_STR)) == 0)
- on_panic_action = SHUTDOWN_REIPL;
- else if (strncmp(buf, SHUTDOWN_DUMP_STR,
- strlen(SHUTDOWN_DUMP_STR)) == 0)
- on_panic_action = SHUTDOWN_DUMP;
- else if (strncmp(buf, SHUTDOWN_STOP_STR,
- strlen(SHUTDOWN_STOP_STR)) == 0)
- on_panic_action = SHUTDOWN_STOP;
- else
- return -EINVAL;
-
- return len;
+ if (strlen(loadparm) > 0)
+ pos += sprintf(dst + pos, " LOADPARM '%s'", loadparm);
+ if (strlen(vmparm) > 0)
+ sprintf(dst + pos, " PARM %s", vmparm);
}
-static struct subsys_attribute on_panic_attr =
- __ATTR(on_panic, 0644, on_panic_show, on_panic_store);
-
-void do_reipl(void)
+static void reipl_run(struct shutdown_trigger *trigger)
{
struct ccw_dev_id devid;
- static char buf[100];
- char loadparm[LOADPARM_LEN + 1];
+ static char buf[128];
switch (reipl_method) {
case REIPL_METHOD_CCW_CIO:
devid.devno = reipl_block_ccw->ipl_info.ccw.devno;
- if (ipl_info.type == IPL_TYPE_CCW && devid.devno == ipl_devno)
- diag308(DIAG308_IPL, NULL);
devid.ssid = 0;
reipl_ccw_dev(&devid);
break;
case REIPL_METHOD_CCW_VM:
- reipl_get_ascii_loadparm(loadparm);
- if (strlen(loadparm) == 0)
- sprintf(buf, "IPL %X CLEAR",
- reipl_block_ccw->ipl_info.ccw.devno);
- else
- sprintf(buf, "IPL %X CLEAR LOADPARM '%s'",
- reipl_block_ccw->ipl_info.ccw.devno, loadparm);
- cpcmd(buf, NULL, 0, NULL);
+ get_ipl_string(buf, reipl_block_ccw, REIPL_METHOD_CCW_VM);
+ __cpcmd(buf, NULL, 0, NULL);
break;
case REIPL_METHOD_CCW_DIAG:
diag308(DIAG308_SET, reipl_block_ccw);
@@ -775,130 +938,57 @@ void do_reipl(void)
diag308(DIAG308_IPL, NULL);
break;
case REIPL_METHOD_FCP_RO_VM:
- cpcmd("IPL", NULL, 0, NULL);
+ __cpcmd("IPL", NULL, 0, NULL);
+ break;
+ case REIPL_METHOD_NSS_DIAG:
+ diag308(DIAG308_SET, reipl_block_nss);
+ diag308(DIAG308_IPL, NULL);
break;
case REIPL_METHOD_NSS:
- sprintf(buf, "IPL %s", reipl_nss_name);
+ get_ipl_string(buf, reipl_block_nss, REIPL_METHOD_NSS);
__cpcmd(buf, NULL, 0, NULL);
break;
case REIPL_METHOD_DEFAULT:
if (MACHINE_IS_VM)
- cpcmd("IPL", NULL, 0, NULL);
+ __cpcmd("IPL", NULL, 0, NULL);
diag308(DIAG308_IPL, NULL);
break;
case REIPL_METHOD_FCP_DUMP:
default:
break;
}
- signal_processor(smp_processor_id(), sigp_stop_and_store_status);
+ disabled_wait((unsigned long) __builtin_return_address(0));
}
-extern struct _lowcore lowcore_save;
-
-static void do_dump(void)
+static void reipl_block_ccw_init(struct ipl_parameter_block *ipb)
{
- struct ccw_dev_id devid;
- static char buf[100];
-
- switch (dump_method) {
- case DUMP_METHOD_CCW_CIO:
- lowcore_save = S390_lowcore;
- dump_smp_stop_all();
- devid.devno = dump_block_ccw->ipl_info.ccw.devno;
- devid.ssid = 0;
- reipl_ccw_dev(&devid);
- break;
- case DUMP_METHOD_CCW_VM:
- dump_smp_stop_all();
- sprintf(buf, "STORE STATUS");
- cpcmd(buf, NULL, 0, NULL);
- sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno);
- cpcmd(buf, NULL, 0, NULL);
- break;
- case DUMP_METHOD_CCW_DIAG:
- diag308(DIAG308_SET, dump_block_ccw);
- diag308(DIAG308_DUMP, NULL);
- break;
- case DUMP_METHOD_FCP_DIAG:
- diag308(DIAG308_SET, dump_block_fcp);
- diag308(DIAG308_DUMP, NULL);
- break;
- case DUMP_METHOD_NONE:
- default:
- return;
- }
- printk(KERN_EMERG "Dump failed!\n");
+ ipb->hdr.len = IPL_PARM_BLK_CCW_LEN;
+ ipb->hdr.version = IPL_PARM_BLOCK_VERSION;
+ ipb->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN;
+ ipb->hdr.pbt = DIAG308_IPL_TYPE_CCW;
}
-/* init functions */
-
-static int __init ipl_register_fcp_files(void)
+static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb)
{
- int rc;
-
- rc = sysfs_create_group(&ipl_subsys.kset.kobj,
- &ipl_fcp_attr_group);
- if (rc)
- goto out;
- rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
- &ipl_parameter_attr);
- if (rc)
- goto out_ipl_parm;
- rc = sysfs_create_bin_file(&ipl_subsys.kset.kobj,
- &ipl_scp_data_attr);
- if (!rc)
- goto out;
-
- sysfs_remove_bin_file(&ipl_subsys.kset.kobj, &ipl_parameter_attr);
-
-out_ipl_parm:
- sysfs_remove_group(&ipl_subsys.kset.kobj, &ipl_fcp_attr_group);
-out:
- return rc;
-}
-
-static int __init ipl_init(void)
-{
- int rc;
-
- rc = firmware_register(&ipl_subsys);
- if (rc)
- return rc;
- switch (ipl_info.type) {
- case IPL_TYPE_CCW:
- rc = sysfs_create_group(&ipl_subsys.kset.kobj,
- &ipl_ccw_attr_group);
- break;
- case IPL_TYPE_FCP:
- case IPL_TYPE_FCP_DUMP:
- rc = ipl_register_fcp_files();
- break;
- case IPL_TYPE_NSS:
- rc = sysfs_create_group(&ipl_subsys.kset.kobj,
- &ipl_nss_attr_group);
- break;
- default:
- rc = sysfs_create_group(&ipl_subsys.kset.kobj,
- &ipl_unknown_attr_group);
- break;
+ /* LOADPARM */
+ /* check if read scp info worked and set loadparm */
+ if (SCCB_VALID)
+ memcpy(ipb->ipl_info.ccw.load_parm, SCCB_LOADPARM, LOADPARM_LEN);
+ else
+ /* read scp info failed: set empty loadparm (EBCDIC blanks) */
+ memset(ipb->ipl_info.ccw.load_parm, 0x40, LOADPARM_LEN);
+ ipb->hdr.flags = DIAG308_FLAGS_LP_VALID;
+
+ /* VM PARM */
+ if (MACHINE_IS_VM && diag308_set_works &&
+ (ipl_block.ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) {
+
+ ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID;
+ ipb->ipl_info.ccw.vm_parm_len =
+ ipl_block.ipl_info.ccw.vm_parm_len;
+ memcpy(ipb->ipl_info.ccw.vm_parm,
+ ipl_block.ipl_info.ccw.vm_parm, DIAG308_VMPARM_SIZE);
}
- if (rc)
- firmware_unregister(&ipl_subsys);
- return rc;
-}
-
-static void __init reipl_probe(void)
-{
- void *buffer;
- int rc;
-
- buffer = (void *) get_zeroed_page(GFP_KERNEL);
- if (!buffer)
- return;
- rc = diag308(DIAG308_STORE, buffer);
- if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG))
- diag308_set_works = 1;
- free_page((unsigned long)buffer);
}
static int __init reipl_nss_init(void)
@@ -907,10 +997,31 @@ static int __init reipl_nss_init(void)
if (!MACHINE_IS_VM)
return 0;
+
+ reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!reipl_block_nss)
+ return -ENOMEM;
+
+ if (!diag308_set_works)
+ sys_reipl_nss_vmparm_attr.attr.mode = S_IRUGO;
+
rc = sysfs_create_group(&reipl_subsys.kset.kobj, &reipl_nss_attr_group);
if (rc)
return rc;
- strncpy(reipl_nss_name, kernel_nss_name, NSS_NAME_SIZE + 1);
+
+ reipl_block_ccw_init(reipl_block_nss);
+ if (ipl_info.type == IPL_TYPE_NSS) {
+ memset(reipl_block_nss->ipl_info.ccw.nss_name,
+ ' ', NSS_NAME_SIZE);
+ memcpy(reipl_block_nss->ipl_info.ccw.nss_name,
+ kernel_nss_name, strlen(kernel_nss_name));
+ ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, NSS_NAME_SIZE);
+ reipl_block_nss->ipl_info.ccw.vm_flags |=
+ DIAG308_VM_FLAGS_NSS_VALID;
+
+ reipl_block_ccw_fill_parms(reipl_block_nss);
+ }
+
reipl_capabilities |= IPL_TYPE_NSS;
return 0;
}
@@ -922,28 +1033,27 @@ static int __init reipl_ccw_init(void)
reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
if (!reipl_block_ccw)
return -ENOMEM;
- rc = sysfs_create_group(&reipl_subsys.kset.kobj, &reipl_ccw_attr_group);
- if (rc) {
- free_page((unsigned long)reipl_block_ccw);
- return rc;
+
+ if (MACHINE_IS_VM) {
+ if (!diag308_set_works)
+ sys_reipl_ccw_vmparm_attr.attr.mode = S_IRUGO;
+ rc = sysfs_create_group(&reipl_subsys.kset.kobj,
+ &reipl_ccw_attr_group_vm);
+ } else {
+ if(!diag308_set_works)
+ sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO;
+ rc = sysfs_create_group(&reipl_subsys.kset.kobj,
+ &reipl_ccw_attr_group_lpar);
}
- reipl_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN;
- reipl_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
- reipl_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN;
- reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
- /* check if read scp info worked and set loadparm */
- if (SCCB_VALID)
- memcpy(reipl_block_ccw->ipl_info.ccw.load_param,
- SCCB_LOADPARM, LOADPARM_LEN);
- else
- /* read scp info failed: set empty loadparm (EBCDIC blanks) */
- memset(reipl_block_ccw->ipl_info.ccw.load_param, 0x40,
- LOADPARM_LEN);
- /* FIXME: check for diag308_set_works when enabling diag ccw reipl */
- if (!MACHINE_IS_VM)
- sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO;
- if (ipl_info.type == IPL_TYPE_CCW)
+ if (rc)
+ return rc;
+
+ reipl_block_ccw_init(reipl_block_ccw);
+ if (ipl_info.type == IPL_TYPE_CCW) {
reipl_block_ccw->ipl_info.ccw.devno = ipl_devno;
+ reipl_block_ccw_fill_parms(reipl_block_ccw);
+ }
+
reipl_capabilities |= IPL_TYPE_CCW;
return 0;
}
@@ -1005,6 +1115,141 @@ static int __init reipl_init(void)
return 0;
}
+static struct shutdown_action 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", "%016llx\n",
+ dump_block_fcp->ipl_info.fcp.wwpn);
+DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%016llx\n",
+ dump_block_fcp->ipl_info.fcp.lun);
+DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
+ dump_block_fcp->ipl_info.fcp.bootprog);
+DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n",
+ dump_block_fcp->ipl_info.fcp.br_lba);
+DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
+ dump_block_fcp->ipl_info.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,
+};
+
+/* CCW dump device attributes */
+
+DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
+ dump_block_ccw->ipl_info.ccw.devno);
+
+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;
+ switch (type) {
+ case DUMP_TYPE_CCW:
+ if (diag308_set_works)
+ dump_method = DUMP_METHOD_CCW_DIAG;
+ else if (MACHINE_IS_VM)
+ dump_method = DUMP_METHOD_CCW_VM;
+ else
+ dump_method = DUMP_METHOD_CCW_CIO;
+ break;
+ case DUMP_TYPE_FCP:
+ dump_method = DUMP_METHOD_FCP_DIAG;
+ break;
+ default:
+ dump_method = DUMP_METHOD_NONE;
+ }
+ dump_type = type;
+ return 0;
+}
+
+static ssize_t dump_type_show(struct subsystem *subsys, char *page)
+{
+ return sprintf(page, "%s\n", dump_type_str(dump_type));
+}
+
+static ssize_t dump_type_store(struct subsystem *subsys,
+ 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);
+ return (rc != 0) ? rc : len;
+}
+
+static struct subsys_attribute dump_type_attr =
+ __ATTR(dump_type, 0644, dump_type_show, dump_type_store);
+
+static decl_subsys(dump, NULL, NULL);
+
+static void dump_run(struct shutdown_trigger *trigger)
+{
+ struct ccw_dev_id devid;
+ static char buf[100];
+
+ switch (dump_method) {
+ case DUMP_METHOD_CCW_CIO:
+ smp_send_stop();
+ devid.devno = dump_block_ccw->ipl_info.ccw.devno;
+ devid.ssid = 0;
+ reipl_ccw_dev(&devid);
+ break;
+ case DUMP_METHOD_CCW_VM:
+ smp_send_stop();
+ sprintf(buf, "STORE STATUS");
+ __cpcmd(buf, NULL, 0, NULL);
+ sprintf(buf, "IPL %X", dump_block_ccw->ipl_info.ccw.devno);
+ __cpcmd(buf, NULL, 0, NULL);
+ break;
+ case DUMP_METHOD_CCW_DIAG:
+ diag308(DIAG308_SET, dump_block_ccw);
+ diag308(DIAG308_DUMP, NULL);
+ break;
+ case DUMP_METHOD_FCP_DIAG:
+ diag308(DIAG308_SET, dump_block_fcp);
+ diag308(DIAG308_DUMP, NULL);
+ break;
+ case DUMP_METHOD_NONE:
+ default:
+ return;
+ }
+ printk(KERN_EMERG "Dump failed!\n");
+}
+
static int __init dump_ccw_init(void)
{
int rc;
@@ -1050,23 +1295,6 @@ static int __init dump_fcp_init(void)
return 0;
}
-#define SHUTDOWN_ON_PANIC_PRIO 0
-
-static int shutdown_on_panic_notify(struct notifier_block *self,
- unsigned long event, void *data)
-{
- if (on_panic_action == SHUTDOWN_DUMP)
- do_dump();
- else if (on_panic_action == SHUTDOWN_REIPL)
- do_reipl();
- return NOTIFY_OK;
-}
-
-static struct notifier_block shutdown_on_panic_nb = {
- .notifier_call = shutdown_on_panic_notify,
- .priority = SHUTDOWN_ON_PANIC_PRIO
-};
-
static int __init dump_init(void)
{
int rc;
@@ -1089,41 +1317,403 @@ static int __init dump_init(void)
return 0;
}
-static int __init shutdown_actions_init(void)
+static struct shutdown_action dump_action = {
+ .name = SHUTDOWN_ACTION_DUMP_STR,
+ .fn = dump_run,
+ .init = dump_init,
+};
+
+/*
+ * 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];
+
+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);
+
+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,
+ NULL,
+};
+
+static struct attribute_group vmcmd_attr_group = {
+ .attrs = vmcmd_attrs,
+};
+
+static decl_subsys(vmcmd, NULL, NULL);
+
+static void vmcmd_run(struct shutdown_trigger *trigger)
+{
+ char *cmd, *next_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
+ return;
+
+ if (strlen(cmd) == 0)
+ return;
+ do {
+ next_cmd = strchr(cmd, '\n');
+ if (next_cmd) {
+ next_cmd[0] = 0;
+ next_cmd += 1;
+ }
+ __cpcmd(cmd, NULL, 0, NULL);
+ cmd = next_cmd;
+ } while (cmd != NULL);
+}
+
+static int vmcmd_init(void)
{
int rc;
- rc = firmware_register(&shutdown_actions_subsys);
+ if (!MACHINE_IS_VM)
+ return -ENOTSUPP;
+ rc = firmware_register(&vmcmd_subsys);
if (rc)
return rc;
- rc = subsys_create_file(&shutdown_actions_subsys, &on_panic_attr);
- if (rc) {
- firmware_unregister(&shutdown_actions_subsys);
- return rc;
+ return sysfs_create_group(&vmcmd_subsys.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)
+ disabled_wait((unsigned long) __builtin_return_address(0));
+ else {
+ signal_processor(smp_processor_id(), sigp_stop);
+ for (;;);
}
- atomic_notifier_chain_register(&panic_notifier_list,
- &shutdown_on_panic_nb);
- return 0;
}
-static int __init s390_ipl_init(void)
+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_action, &vmcmd_action, &stop_action};
+#define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *))
+
+/*
+ * Trigger section
+ */
+
+static decl_subsys(shutdown_actions, NULL, NULL);
+
+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 (!shutdown_actions_list[i])
+ continue;
+ if (strncmp(buf, shutdown_actions_list[i]->name,
+ strlen(shutdown_actions_list[i]->name)) == 0) {
+ 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 subsystem *subsys, char *page)
+{
+ return sprintf(page, "%s\n", on_reboot_trigger.action->name);
+}
+
+static ssize_t on_reboot_store(struct subsystem *subsys,
+ const char *buf, size_t len)
+{
+ return set_trigger(buf, &on_reboot_trigger, len);
+}
+
+static struct subsys_attribute on_reboot_attr =
+ __ATTR(on_reboot, 0644, on_reboot_show, on_reboot_store);
+
+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 subsystem *subsys, char *page)
+{
+ return sprintf(page, "%s\n", on_panic_trigger.action->name);
+}
+
+static ssize_t on_panic_store(struct subsystem *subsys,
+ const char *buf, size_t len)
+{
+ return set_trigger(buf, &on_panic_trigger, len);
+}
+
+static struct subsys_attribute on_panic_attr =
+ __ATTR(on_panic, 0644, on_panic_show, on_panic_store);
+
+static void do_panic(void)
+{
+ on_panic_trigger.action->fn(&on_panic_trigger);
+ stop_run(&on_panic_trigger);
+}
+
+/* on halt */
+
+static struct shutdown_trigger on_halt_trigger = {ON_HALT_STR, &stop_action};
+
+static ssize_t on_halt_show(struct subsystem *subsys, char *page)
+{
+ return sprintf(page, "%s\n", on_halt_trigger.action->name);
+}
+
+static ssize_t on_halt_store(struct subsystem *subsys,
+ const char *buf, size_t len)
+{
+ return set_trigger(buf, &on_halt_trigger, len);
+}
+
+static struct subsys_attribute on_halt_attr =
+ __ATTR(on_halt, 0644, on_halt_show, on_halt_store);
+
+
+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 subsystem *subsys, char *page)
+{
+ return sprintf(page, "%s\n", on_poff_trigger.action->name);
+}
+
+static ssize_t on_poff_store(struct subsystem *subsys,
+ const char *buf, size_t len)
+{
+ return set_trigger(buf, &on_poff_trigger, len);
+}
+
+static struct subsys_attribute on_poff_attr =
+ __ATTR(on_poff, 0644, on_poff_show, on_poff_store);
+
+
+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 void __init shutdown_triggers_init(void)
{
int rc;
- reipl_probe();
- rc = ipl_init();
- if (rc)
- return rc;
- rc = reipl_init();
- if (rc)
- return rc;
- rc = dump_init();
- if (rc)
- return rc;
- rc = shutdown_actions_init();
+ rc = firmware_register(&shutdown_actions_subsys);
if (rc)
- return rc;
+ goto fail;
+ if (sysfs_create_file(&shutdown_actions_subsys.kset.kobj,
+ &on_reboot_attr.attr))
+ goto fail;
+ if (sysfs_create_file(&shutdown_actions_subsys.kset.kobj,
+ &on_panic_attr.attr))
+ goto fail;
+ if (sysfs_create_file(&shutdown_actions_subsys.kset.kobj,
+ &on_halt_attr.attr))
+ goto fail;
+ if (sysfs_create_file(&shutdown_actions_subsys.kset.kobj,
+ &on_poff_attr.attr))
+ 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;
+ if (shutdown_actions_list[i]->init())
+ shutdown_actions_list[i] = NULL;
+ }
+}
+
+static int __init s390_ipl_init(void)
+{
+ 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 = 0,
+};
+
+void __init setup_ipl(void)
+{
+ ipl_info.type = get_ipl_type();
+ switch (ipl_info.type) {
+ case IPL_TYPE_CCW:
+ ipl_info.data.ccw.dev_id.devno = ipl_devno;
+ ipl_info.data.ccw.dev_id.ssid = 0;
+ break;
+ case IPL_TYPE_FCP:
+ case IPL_TYPE_FCP_DUMP:
+ ipl_info.data.fcp.dev_id.devno =
+ IPL_PARMBLOCK_START->ipl_info.fcp.devno;
+ ipl_info.data.fcp.dev_id.ssid = 0;
+ ipl_info.data.fcp.wwpn = IPL_PARMBLOCK_START->ipl_info.fcp.wwpn;
+ ipl_info.data.fcp.lun = IPL_PARMBLOCK_START->ipl_info.fcp.lun;
+ break;
+ case IPL_TYPE_NSS:
+ strncpy(ipl_info.data.nss.name, kernel_nss_name,
+ sizeof(ipl_info.data.nss.name));
+ break;
+ case IPL_TYPE_UNKNOWN:
+ default:
+ /* We have no info to copy */
+ break;
+ }
+ atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb);
+}
+
+void __init ipl_update_parameters(void)
+{
+ int rc;
+
+ rc = diag308(DIAG308_STORE, &ipl_block);
+ if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG))
+ diag308_set_works = 1;
+}
+
+void __init ipl_save_parameters(void)
+{
+ struct cio_iplinfo iplinfo;
+ unsigned int *ipl_ptr;
+ void *src, *dst;
+
+ if (cio_get_iplinfo(&iplinfo))
+ return;
+
+ ipl_devno = iplinfo.devno;
+ ipl_flags |= IPL_DEVNO_VALID;
+ if (!iplinfo.is_qdio)
+ return;
+ ipl_flags |= IPL_PARMBLOCK_VALID;
+ ipl_ptr = (unsigned int *)__LC_IPL_PARMBLOCK_PTR;
+ src = (void *)(unsigned long)*ipl_ptr;
+ dst = (void *)IPL_PARMBLOCK_ORIGIN;
+ memmove(dst, src, PAGE_SIZE);
+ *ipl_ptr = IPL_PARMBLOCK_ORIGIN;
+}
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index d02165c..ac4505e 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -16,6 +16,7 @@
#include <linux/mm.h>
#include <linux/kexec.h>
#include <linux/delay.h>
+#include <asm/ipl.h>
#include <asm/cio.h>
#include <asm/setup.h>
#include <asm/pgtable.h>
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 6b4a019..c7495e5 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -432,42 +432,6 @@ void __init startup_init(void)
create_kernel_nss();
}
-#ifdef CONFIG_SMP
-extern void machine_restart_smp(char *);
-extern void machine_halt_smp(void);
-extern void machine_power_off_smp(void);
-
-void (*_machine_restart)(char *command) = machine_restart_smp;
-void (*_machine_halt)(void) = machine_halt_smp;
-void (*_machine_power_off)(void) = machine_power_off_smp;
-#else
-/*
- * Reboot, halt and power_off routines for non SMP.
- */
-static void do_machine_restart_nonsmp(char * __unused)
-{
- do_reipl();
-}
-
-static void do_machine_halt_nonsmp(void)
-{
- if (MACHINE_IS_VM && strlen(vmhalt_cmd) > 0)
- cpcmd(vmhalt_cmd, NULL, 0, NULL);
- signal_processor(smp_processor_id(), sigp_stop_and_store_status);
-}
-
-static void do_machine_power_off_nonsmp(void)
-{
- if (MACHINE_IS_VM && strlen(vmpoff_cmd) > 0)
- cpcmd(vmpoff_cmd, NULL, 0, NULL);
- signal_processor(smp_processor_id(), sigp_stop_and_store_status);
-}
-
-void (*_machine_restart)(char *command) = do_machine_restart_nonsmp;
-void (*_machine_halt)(void) = do_machine_halt_nonsmp;
-void (*_machine_power_off)(void) = do_machine_power_off_nonsmp;
-#endif
-
/*
* Reboot, halt and power_off stubs. They just call _machine_restart,
* _machine_halt or _machine_power_off.
@@ -929,8 +893,8 @@ setup_arch(char **cmdline_p)
parse_early_param();
+ setup_ipl();
setup_memory_end();
- setup_ipl_info();
#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE)
if (ipl_info.type == IPL_TYPE_FCP_DUMP) {
memory_end = ZFCPDUMP_HSA_SIZE;
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index e31911d..e07b571 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -250,94 +250,6 @@ void smp_send_stop(void)
}
/*
- * Reboot, halt and power_off routines for SMP.
- */
-
-static void do_machine_restart(void * __unused)
-{
- int cpu;
- static atomic_t cpuid = ATOMIC_INIT(-1);
-
- if (atomic_cmpxchg(&cpuid, -1, smp_processor_id()) != -1)
- signal_processor(smp_processor_id(), sigp_stop);
-
- /* Wait for all other cpus to enter stopped state */
- for_each_online_cpu(cpu) {
- if (cpu == smp_processor_id())
- continue;
- while(!smp_cpu_not_running(cpu))
- cpu_relax();
- }
-
- /* Store status of other cpus. */
- do_store_status();
-
- /*
- * Finally call reipl. Because we waited for all other
- * cpus to enter this function we know that they do
- * not hold any s390irq-locks (the cpus have been
- * interrupted by an external interrupt and s390irq
- * locks are always held disabled).
- */
- do_reipl();
-}
-
-void machine_restart_smp(char * __unused)
-{
- on_each_cpu(do_machine_restart, NULL, 0, 0);
-}
-
-static void do_wait_for_stop(void)
-{
- unsigned long cr[16];
-
- __ctl_store(cr, 0, 15);
- cr[0] &= ~0xffff;
- cr[6] = 0;
- __ctl_load(cr, 0, 15);
- for (;;)
- enabled_wait();
-}
-
-static void do_machine_halt(void * __unused)
-{
- static atomic_t cpuid = ATOMIC_INIT(-1);
-
- if (atomic_cmpxchg(&cpuid, -1, smp_processor_id()) == -1) {
- smp_send_stop();
- if (MACHINE_IS_VM && strlen(vmhalt_cmd) > 0)
- cpcmd(vmhalt_cmd, NULL, 0, NULL);
- signal_processor(smp_processor_id(),
- sigp_stop_and_store_status);
- }
- do_wait_for_stop();
-}
-
-void machine_halt_smp(void)
-{
- on_each_cpu(do_machine_halt, NULL, 0, 0);
-}
-
-static void do_machine_power_off(void * __unused)
-{
- static atomic_t cpuid = ATOMIC_INIT(-1);
-
- if (atomic_cmpxchg(&cpuid, -1, smp_processor_id()) == -1) {
- smp_send_stop();
- if (MACHINE_IS_VM && strlen(vmpoff_cmd) > 0)
- cpcmd(vmpoff_cmd, NULL, 0, NULL);
- signal_processor(smp_processor_id(),
- sigp_stop_and_store_status);
- }
- do_wait_for_stop();
-}
-
-void machine_power_off_smp(void)
-{
- on_each_cpu(do_machine_power_off, NULL, 0, 0);
-}
-
-/*
* This is the main routine where commands issued by other
* cpus are handled.
*/
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index b1f8348..1042baf 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -904,37 +904,23 @@ void reipl_ccw_dev(struct ccw_dev_id *devid)
do_reipl_asm(*((__u32*)&schid));
}
-extern struct schib ipl_schib;
-
-/*
- * ipl_save_parameters gets called very early. It is not allowed to access
- * anything in the bss section at all. The bss section is not cleared yet,
- * but may contain some ipl parameters written by the firmware.
- * These parameters (if present) are copied to 0x2000.
- * To avoid corruption of the ipl parameters, all variables used by this
- * function must reside on the stack or in the data section.
- */
-void ipl_save_parameters(void)
+int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo)
{
struct subchannel_id schid;
- unsigned int *ipl_ptr;
- void *src, *dst;
+ struct schib schib;
schid = *(struct subchannel_id *)__LC_SUBCHANNEL_ID;
if (!schid.one)
- return;
- if (stsch(schid, &ipl_schib))
- return;
- if (!ipl_schib.pmcw.dnv)
- return;
- ipl_devno = ipl_schib.pmcw.dev;
- ipl_flags |= IPL_DEVNO_VALID;
- if (!ipl_schib.pmcw.qf)
- return;
- ipl_flags |= IPL_PARMBLOCK_VALID;
- ipl_ptr = (unsigned int *)__LC_IPL_PARMBLOCK_PTR;
- src = (void *)(unsigned long)*ipl_ptr;
- dst = (void *)IPL_PARMBLOCK_ORIGIN;
- memmove(dst, src, PAGE_SIZE);
- *ipl_ptr = IPL_PARMBLOCK_ORIGIN;
+ return -ENODEV;
+ if (stsch(schid, &schib))
+ return -ENODEV;
+ if (schib.pmcw.st != SUBCHANNEL_TYPE_IO)
+ return -ENODEV;
+ if (!schib.pmcw.dnv)
+ return -ENODEV;
+ iplinfo->devno = schib.pmcw.dev;
+ iplinfo->is_qdio = schib.pmcw.qf;
+ return 0;
}
+
+extern struct schib ipl_schib;
diff --git a/include/asm-s390/cio.h b/include/asm-s390/cio.h
index a5a3960..6a71bc3 100644
--- a/include/asm-s390/cio.h
+++ b/include/asm-s390/cio.h
@@ -275,4 +275,11 @@ extern void css_schedule_reprobe(void);
extern void reipl_ccw_dev(struct ccw_dev_id *id);
+struct cio_iplinfo {
+ u16 devno;
+ int is_qdio;
+};
+
+extern int cio_get_iplinfo(struct cio_iplinfo *iplinfo);
+
#endif
diff --git a/include/asm-s390/ipl.h b/include/asm-s390/ipl.h
index b57058a..1171e6d 100644
--- a/include/asm-s390/ipl.h
+++ b/include/asm-s390/ipl.h
@@ -56,15 +56,19 @@ struct ipl_block_fcp {
u8 scp_data[];
} __attribute__((packed));
+#define DIAG308_VMPARM_SIZE 64
+
struct ipl_block_ccw {
- u8 load_param[8];
+ u8 load_parm[8];
u8 reserved1[84];
u8 reserved2[2];
u16 devno;
u8 vm_flags;
u8 reserved3[3];
u32 vm_parm_len;
- u8 reserved4[80];
+ u8 nss_name[8];
+ u8 vm_parm[DIAG308_VMPARM_SIZE];
+ u8 reserved4[8];
} __attribute__((packed));
struct ipl_parameter_block {
@@ -73,7 +77,7 @@ struct ipl_parameter_block {
struct ipl_block_fcp fcp;
struct ipl_block_ccw ccw;
} ipl_info;
-} __attribute__((packed));
+} __attribute__((packed,aligned(4096)));
/*
* IPL validity flags
@@ -83,7 +87,11 @@ extern u32 dump_prefix_page;
extern unsigned int zfcpdump_prefix_array[];
extern void do_reipl(void);
+extern void do_halt(void);
+extern void do_poff(void);
extern void ipl_save_parameters(void);
+extern void ipl_update_parameters(void);
+extern void get_ipl_vmparm(char *);
enum {
IPL_DEVNO_VALID = 1,
@@ -111,11 +119,14 @@ struct ipl_info
u64 wwpn;
u64 lun;
} fcp;
+ struct {
+ char name[NSS_NAME_SIZE + 1];
+ } nss;
} data;
};
extern struct ipl_info ipl_info;
-extern void setup_ipl_info(void);
+extern void setup_ipl(void);
/*
* DIAG 308 support
@@ -138,9 +149,18 @@ enum diag308_opt {
DIAG308_IPL_OPT_DUMP = 0x20,
};
+enum diag308_flags {
+ DIAG308_FLAGS_LP_VALID = 0x80,
+};
+
+enum diag308_vm_flags {
+ DIAG308_VM_FLAGS_NSS_VALID = 0x80,
+ DIAG308_VM_FLAGS_VP_VALID = 0x40,
+};
+
enum diag308_rc {
- DIAG308_RC_OK = 1,
- DIAG308_RC_NOCONFIG = 0x0102,
+ DIAG308_RC_OK = 0x0001,
+ DIAG308_RC_NOCONFIG = 0x0102,
};
extern int diag308(unsigned long subcode, void *addr);
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h
index c1f5e92..e061bb0 100644
--- a/include/asm-s390/setup.h
+++ b/include/asm-s390/setup.h
@@ -87,14 +87,6 @@ extern unsigned int console_irq;
#define SET_CONSOLE_3215 do { console_mode = 2; } while (0)
#define SET_CONSOLE_3270 do { console_mode = 3; } while (0)
-/*
- * IPL validity flags and parameters as detected in head.S
- */
-extern u32 ipl_parameter_flags;
-extern u16 ipl_devno;
-
-extern void do_reipl(void);
-
#define NSS_NAME_SIZE 8
extern char kernel_nss_name[];
distrib
>
Scientific%20Linux
>
5x
>
x86_64
>
by-pkgid
>
fc11cd6e1c513a17304da94a5390f3cd
>
files
>
3153
