Commit 4e872a3f authored by Christian Borntraeger's avatar Christian Borntraeger
Browse files

s390: provide I/O subsystem reset 



Provide a function that resets the I/O subsystem.

Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: default avatarAlexander Graf <agraf@suse.de>
parent 268846ba

hw/s390x/s390-virtio-ccw.c

+15 −0
Original line number Diff line number Diff line
@@ -17,6 +17,21 @@ 
#include "css.h"

#include "virtio-ccw.h"



void io_subsystem_reset(void)

{

    DeviceState *css, *sclp;



    css = DEVICE(object_resolve_path_type("", "virtual-css-bridge", NULL));

    if (css) {

        qdev_reset_all(css);

    }

    sclp = DEVICE(object_resolve_path_type("",

                  "s390-sclp-event-facility", NULL));

    if (sclp) {

        qdev_reset_all(sclp);

    }

}



static int virtio_ccw_hcall_notify(const uint64_t *args)

{

    uint64_t subch_id = args[0];

target-s390x/cpu.h

+1 −0
Original line number Diff line number Diff line
@@ -400,6 +400,7 @@ void cpu_unlock(void); 
typedef struct SubchDev SubchDev;



#ifndef CONFIG_USER_ONLY

extern void io_subsystem_reset(void);

SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid,

                         uint16_t schid);

bool css_subch_visible(SubchDev *sch);