From 8fadea24de4ef83dd2db3a9cd06b384fd820b9db Mon Sep 17 00:00:00 2001 From: Cornelia Huck Date: Tue, 7 May 2019 17:47:33 +0200 Subject: vfio-ccw: support async command subregion A vfio-ccw device may provide an async command subregion for issuing halt/clear subchannel requests. If it is present, use it for sending halt/clear request to the device; if not, fall back to emulation (as done today). Reviewed-by: Farhan Ali Message-Id: <20190613092542.2834-1-cohuck@redhat.com> Reviewed-by: Eric Farman Signed-off-by: Cornelia Huck --- include/hw/s390x/css.h | 3 +++ include/hw/s390x/s390-ccw.h | 2 ++ 2 files changed, 5 insertions(+) (limited to 'include') diff --git a/include/hw/s390x/css.h b/include/hw/s390x/css.h index 7cc183ef43..d033387fba 100644 --- a/include/hw/s390x/css.h +++ b/include/hw/s390x/css.h @@ -215,6 +215,9 @@ IOInstEnding s390_ccw_cmd_request(SubchDev *sch); IOInstEnding do_subchannel_work_virtual(SubchDev *sub); IOInstEnding do_subchannel_work_passthrough(SubchDev *sub); +int s390_ccw_halt(SubchDev *sch); +int s390_ccw_clear(SubchDev *sch); + typedef enum { CSS_IO_ADAPTER_VIRTIO = 0, CSS_IO_ADAPTER_PCI = 1, diff --git a/include/hw/s390x/s390-ccw.h b/include/hw/s390x/s390-ccw.h index 901d805d79..fffb54562f 100644 --- a/include/hw/s390x/s390-ccw.h +++ b/include/hw/s390x/s390-ccw.h @@ -35,6 +35,8 @@ typedef struct S390CCWDeviceClass { void (*realize)(S390CCWDevice *dev, char *sysfsdev, Error **errp); void (*unrealize)(S390CCWDevice *dev, Error **errp); IOInstEnding (*handle_request) (SubchDev *sch); + int (*handle_halt) (SubchDev *sch); + int (*handle_clear) (SubchDev *sch); } S390CCWDeviceClass; #endif -- cgit v1.2.3-55-g7522