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[PATCH] s390: channel path measurements

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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>
This commit is contained in:
Cornelia Huck
2006-03-24 03:15:14 -08:00
committed by Linus Torvalds
parent dc06010c62
commit 495a5b45ac
4 changed files with 500 additions and 23 deletions
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22
drivers/s390/cio/chsc.h
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@@ -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)