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s390x/css: introduce read-only property type for device ids 

Let's introduce a read-only property type that handles device ids of the
CssDevId type used for channel devices for future use. e.g. exposing the
busid of an I/O subchannel that is assigned to a ccw device.

Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Dong Jia Shi 2017-02-14 04:04:02 +01:00 committed by Cornelia Huck
parent 229913f0ef
commit c35fc6aa18
2 changed files with 12 additions and 0 deletions
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7
hw/s390x/css.c
View File

@ -1894,6 +1894,13 @@ PropertyInfo css_devid_propinfo = {
.set = set_css_devid, .set = set_css_devid,
}; };
PropertyInfo css_devid_ro_propinfo = {
.name = "str",
.description = "Read-only identifier of an I/O device in the channel "
"subsystem, example: fe.1.23ab",
.get = get_css_devid,
};
SubchDev *css_create_virtual_sch(CssDevId bus_id, Error **errp) SubchDev *css_create_virtual_sch(CssDevId bus_id, Error **errp)
{ {
uint16_t schid = 0; uint16_t schid = 0;

5
include/hw/s390x/css.h
View File

@ -172,6 +172,11 @@ extern PropertyInfo css_devid_propinfo;
#define DEFINE_PROP_CSS_DEV_ID(_n, _s, _f) \ #define DEFINE_PROP_CSS_DEV_ID(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, css_devid_propinfo, CssDevId) DEFINE_PROP(_n, _s, _f, css_devid_propinfo, CssDevId)
extern PropertyInfo css_devid_ro_propinfo;
#define DEFINE_PROP_CSS_DEV_ID_RO(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, css_devid_ro_propinfo, CssDevId)
/** /**
* Create a subchannel for the given bus id. * Create a subchannel for the given bus id.
* *