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authorPaolo Bonzini <pbonzini@redhat.com>2019-02-22 17:44:23 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2019-02-22 17:44:23 +0100
commit8f060f53554cf58dcb28c85ff05d03ed8b02f4b2 (patch)
treebba474bccdc99e46fe11e3867f2ddbde7353d69f /drivers/s390
parenta242010776f880ec0d8917aae0406e4a70cdc36c (diff)
parent11ba5961a2156a4f210627ed8421387e2531b100 (diff)
Merge tag 'kvm-s390-next-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-next
KVM: s390: Features for 5.1 - Clarify KVM related kernel messages - Interrupt cleanup - Introduction of the Guest Information Block (GIB) - Preparation for processor subfunctions in cpu model
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/cio/chsc.c37
-rw-r--r--drivers/s390/cio/chsc.h1
2 files changed, 38 insertions, 0 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index a0baee25134c..4159c63a5fd2 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -1382,3 +1382,40 @@ int chsc_pnso_brinfo(struct subchannel_id schid,
return chsc_error_from_response(brinfo_area->response.code);
}
EXPORT_SYMBOL_GPL(chsc_pnso_brinfo);
+
+int chsc_sgib(u32 origin)
+{
+ struct {
+ struct chsc_header request;
+ u16 op;
+ u8 reserved01[2];
+ u8 reserved02:4;
+ u8 fmt:4;
+ u8 reserved03[7];
+ /* operation data area begin */
+ u8 reserved04[4];
+ u32 gib_origin;
+ u8 reserved05[10];
+ u8 aix;
+ u8 reserved06[4029];
+ struct chsc_header response;
+ u8 reserved07[4];
+ } *sgib_area;
+ int ret;
+
+ spin_lock_irq(&chsc_page_lock);
+ memset(chsc_page, 0, PAGE_SIZE);
+ sgib_area = chsc_page;
+ sgib_area->request.length = 0x0fe0;
+ sgib_area->request.code = 0x0021;
+ sgib_area->op = 0x1;
+ sgib_area->gib_origin = origin;
+
+ ret = chsc(sgib_area);
+ if (ret == 0)
+ ret = chsc_error_from_response(sgib_area->response.code);
+ spin_unlock_irq(&chsc_page_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(chsc_sgib);
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 78aba8d94eec..e57d68e325a3 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -164,6 +164,7 @@ int chsc_get_channel_measurement_chars(struct channel_path *chp);
int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
u64 summary_indicator_addr, u64 subchannel_indicator_addr);
+int chsc_sgib(u32 origin);
int chsc_error_from_response(int response);
int chsc_siosl(struct subchannel_id schid);