[PATCH] s390: channel path measurements

Gather extended measurements for channel paths from the channel subsystem and
expose them to userspace via a sysfs attribute.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 21 insertions, 1 deletions

diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 3e75095f35d0..a259245780ae 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -12,6 +12,16 @@ struct chsc_header {
         u16 code;
 };
 
+#define NR_MEASUREMENT_CHARS 5
+struct cmg_chars {
+        u32 values[NR_MEASUREMENT_CHARS];
+};
+
+#define NR_MEASUREMENT_ENTRIES 8
+struct cmg_entry {
+        u32 values[NR_MEASUREMENT_ENTRIES];
+};
+
 struct channel_path_desc {
         u8 flags;
         u8 lsn;
@@ -27,6 +37,10 @@ struct channel_path {
         int id;
         int state;
         struct channel_path_desc desc;
+        /* Channel-measurement related stuff: */
+        int cmg;
+        int shared;
+        void *cmg_chars;
         struct device dev;
 };
 
@@ -52,7 +66,11 @@ struct css_general_char {
 
 struct css_chsc_char {
         u64 res;
-        u64 : 43;
+        u64 : 20;
+        u32 secm : 1; /* bit 84 */
+        u32 : 1;
+        u32 scmc : 1; /* bit 86 */
+        u32 : 20;
         u32 scssc : 1;  /* bit 107 */
         u32 scsscf : 1; /* bit 108 */
         u32 : 19;
@@ -67,6 +85,8 @@ extern int css_characteristics_avail;
 extern void *chsc_get_chp_desc(struct subchannel*, int);
 
 extern int chsc_enable_facility(int);
+struct channel_subsystem;
+extern int chsc_secm(struct channel_subsystem *, int);
 
 #define to_channelpath(device) container_of(device, struct channel_path, dev)