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| author | Xiao Feng Ren <renxiaof@linux.vnet.ibm.com> | 2017-05-17 02:48:04 +0200 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2017-05-19 12:29:01 +0200 |
| commit | 8f3cf0128cbac1ac19be8515dc184edb88dd5fb1 (patch) | |
| tree | e5f849d2ec1acaff59b28f6144912baca63788b1 /include/hw | |
| parent | 274250c30158f60aefb46088a7bb0d711061226c (diff) | |
| download | qemu-8f3cf0128cbac1ac19be8515dc184edb88dd5fb1.zip qemu-8f3cf0128cbac1ac19be8515dc184edb88dd5fb1.tar.gz qemu-8f3cf0128cbac1ac19be8515dc184edb88dd5fb1.tar.bz2 | |
s390x/css: realize css_sch_build_schib
The S390 virtual css support already has a mechanism to build a
virtual subchannel information block (schib) and provide virtual
subchannels to the guest. However, to pass-through subchannels to
a guest, we need to introduce a new mechanism to build its schib
according to the real device information. Thus we realize a new css
sch_build_schib function to extract the path_masks, chpids, chpid
type from sysfs. To reuse the existing code, we refactor
css_add_virtual_chpid to css_add_chpid.
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Xiao Feng Ren <renxiaof@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170517004813.58227-5-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/s390x/css.h | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/include/hw/s390x/css.h b/include/hw/s390x/css.h index e61fa74..e59a115 100644 --- a/include/hw/s390x/css.h +++ b/include/hw/s390x/css.h @@ -95,6 +95,24 @@ struct SubchDev { void *driver_data; }; +/* + * Identify a device within the channel subsystem. + * Note that this can be used to identify either the subchannel or + * the attached I/O device, as there's always one I/O device per + * subchannel. + */ +typedef struct CssDevId { + uint8_t cssid; + uint8_t ssid; + uint16_t devid; + bool valid; +} CssDevId; + +extern PropertyInfo css_devid_propinfo; + +#define DEFINE_PROP_CSS_DEV_ID(_n, _s, _f) \ + DEFINE_PROP(_n, _s, _f, css_devid_propinfo, CssDevId) + typedef struct IndAddr { hwaddr addr; uint64_t map; @@ -116,6 +134,7 @@ bool css_devno_used(uint8_t cssid, uint8_t ssid, uint16_t devno); void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid, uint16_t devno, SubchDev *sch); void css_sch_build_virtual_schib(SubchDev *sch, uint8_t chpid, uint8_t type); +int css_sch_build_schib(SubchDev *sch, CssDevId *dev_id); unsigned int css_find_free_chpid(uint8_t cssid); uint16_t css_build_subchannel_id(SubchDev *sch); void css_reset(void); @@ -164,23 +183,6 @@ int css_do_rsch(SubchDev *sch); int css_do_rchp(uint8_t cssid, uint8_t chpid); bool css_present(uint8_t cssid); #endif -/* - * Identify a device within the channel subsystem. - * Note that this can be used to identify either the subchannel or - * the attached I/O device, as there's always one I/O device per - * subchannel. - */ -typedef struct CssDevId { - uint8_t cssid; - uint8_t ssid; - uint16_t devid; - bool valid; -} CssDevId; - -extern PropertyInfo css_devid_propinfo; - -#define DEFINE_PROP_CSS_DEV_ID(_n, _s, _f) \ - DEFINE_PROP(_n, _s, _f, css_devid_propinfo, CssDevId) extern PropertyInfo css_devid_ro_propinfo; |