[S390] ipl/dump on panic.

It is now possible to specify a ccw/fcp dump device which is used to
automatically create a system dump in case of a kernel panic. The dump
device can be configured under /sys/firmware/dump.
In addition it is now possible to specify a ccw/fcp device which is used
for the next reboot of Linux. The reipl device can be configured under
/sys/firmware/reipl.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/asm-s390/cio.h b/include/asm-s390/cio.h
index 28fdd6e2b8ba..da063cd5f0a0 100644
--- a/include/asm-s390/cio.h
+++ b/include/asm-s390/cio.h
@@ -270,6 +270,11 @@ struct diag210 {
         __u32 vrdccrft : 8;    /* real device feature (output) */
 } __attribute__ ((packed,aligned(4)));
 
+struct ccw_dev_id {
+        u8 ssid;
+        u16 devno;
+};
+
 extern int diag210(struct diag210 *addr);
 
 extern void wait_cons_dev(void);
@@ -280,6 +285,8 @@ extern void cio_reset_channel_paths(void);
 
 extern void css_schedule_reprobe(void);
 
+extern void reipl_ccw_dev(struct ccw_dev_id *id);
+
 #endif
 
 #endif