#include <linux/errno.h>
#include <linux/workqueue.h>
#include <linux/time.h>
+#include <linux/device.h>
#include <linux/kthread.h>
-
+#include <asm/etr.h>
#include <asm/lowcore.h>
-
+#include <asm/cio.h>
+#include "cio/cio.h"
+#include "cio/chsc.h"
+#include "cio/css.h"
+#include "cio/chp.h"
#include "s390mach.h"
static struct semaphore m_sem;
-extern int css_process_crw(int, int);
-extern int chsc_process_crw(void);
-extern int chp_process_crw(int, int);
-extern void css_reiterate_subchannels(void);
-
-extern struct workqueue_struct *slow_path_wq;
-extern struct work_struct slow_path_work;
-
static NORET_TYPE void
s390_handle_damage(char *msg)
{
s390_collect_crw_info(void *param)
{
struct crw crw[2];
- int ccode, ret, slow;
+ int ccode;
struct semaphore *sem;
unsigned int chain;
sem = (struct semaphore *)param;
repeat:
down_interruptible(sem);
- slow = 0;
chain = 0;
while (1) {
if (unlikely(chain > 1)) {
/* Check for overflows. */
if (crw[chain].oflw) {
pr_debug("%s: crw overflow detected!\n", __FUNCTION__);
- css_reiterate_subchannels();
+ css_schedule_eval_all();
chain = 0;
- slow = 1;
continue;
}
switch (crw[chain].rsc) {
if (crw[0].chn && !chain)
break;
pr_debug("source is subchannel %04X\n", crw[0].rsid);
- ret = css_process_crw (crw[0].rsid,
- chain ? crw[1].rsid : 0);
- if (ret == -EAGAIN)
- slow = 1;
+ css_process_crw(crw[0].rsid, chain ? crw[1].rsid : 0);
break;
case CRW_RSC_MONITOR:
pr_debug("source is monitoring facility\n");
}
switch (crw[0].erc) {
case CRW_ERC_IPARM: /* Path has come. */
- ret = chp_process_crw(crw[0].rsid, 1);
+ chp_process_crw(crw[0].rsid, 1);
break;
case CRW_ERC_PERRI: /* Path has gone. */
case CRW_ERC_PERRN:
- ret = chp_process_crw(crw[0].rsid, 0);
+ chp_process_crw(crw[0].rsid, 0);
break;
default:
pr_debug("Don't know how to handle erc=%x\n",
crw[0].erc);
- ret = 0;
}
- if (ret == -EAGAIN)
- slow = 1;
break;
case CRW_RSC_CONFIG:
pr_debug("source is configuration-alert facility\n");
break;
case CRW_RSC_CSS:
pr_debug("source is channel subsystem\n");
- ret = chsc_process_crw();
- if (ret == -EAGAIN)
- slow = 1;
+ chsc_process_crw();
break;
default:
pr_debug("unknown source\n");
/* chain is always 0 or 1 here. */
chain = crw[chain].chn ? chain + 1 : 0;
}
- if (slow)
- queue_work(slow_path_wq, &slow_path_work);
goto repeat;
return 0;
}
*/
__ctl_clear_bit(14, 24); /* Disable WARNING MCH */
if (xchg(&mchchk_wng_posted, 1) == 0)
- kill_proc(1, SIGPWR, 1);
+ kill_cad_pid(SIGPWR, 1);
}
#endif
s390_handle_damage("unable to revalidate registers.");
}
+ if (mci->cd) {
+ /* Timing facility damage */
+ s390_handle_damage("TOD clock damaged");
+ }
+
+ if (mci->ed && mci->ec) {
+ /* External damage */
+ if (S390_lowcore.external_damage_code & (1U << ED_ETR_SYNC))
+ etr_sync_check();
+ if (S390_lowcore.external_damage_code & (1U << ED_ETR_SWITCH))
+ etr_switch_to_local();
+ }
+
if (mci->se)
/* Storage error uncorrected */
s390_handle_damage("received storage error uncorrected "
machine_check_init(void)
{
init_MUTEX_LOCKED(&m_sem);
- ctl_clear_bit(14, 25); /* disable external damage MCH */
+ ctl_set_bit(14, 25); /* enable external damage MCH */
ctl_set_bit(14, 27); /* enable system recovery MCH */
#ifdef CONFIG_MACHCHK_WARNING
ctl_set_bit(14, 24); /* enable warning MCH */
static int __init
machine_check_crw_init (void)
{
- kthread_run(s390_collect_crw_info, &m_sem, "kmcheck");
+ struct task_struct *task;
+
+ task = kthread_run(s390_collect_crw_info, &m_sem, "kmcheck");
+ if (IS_ERR(task))
+ return PTR_ERR(task);
ctl_set_bit(14, 28); /* enable channel report MCH */
return 0;
}