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authorCornelia Huck <cornelia.huck@de.ibm.com>2008-07-14 09:59:05 +0200
committerHeiko Carstens <heiko.carstens@de.ibm.com>2008-07-14 10:02:12 +0200
commit9d92a7e1b0d095c8be96ce5e592c6c5541684631 (patch)
tree22cfca810de07a7d7f87f17a89de0ae10d462038 /drivers/s390/cio/chsc.h
parent683c5418e6ac9f40f925dab6f547a5b0a4ad43c6 (diff)
downloadvexpress-lsk-9d92a7e1b0d095c8be96ce5e592c6c5541684631.tar.gz
[S390] cio: Add chsc subchannel driver.
This patch adds a driver for subchannels of type chsc. A device /dev/chsc is created which may be used to issue ioctls to: - obtain information about the machine's I/O configuration - dynamically change the machine's I/O configuration via asynchronous chsc commands Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/chsc.h')
-rw-r--r--drivers/s390/cio/chsc.h21
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 2a38b509022..fb6c4d6c45b 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -4,7 +4,8 @@
#include <linux/types.h>
#include <linux/device.h>
#include <asm/chpid.h>
-#include "schid.h"
+#include <asm/chsc.h>
+#include <asm/schid.h>
#define CHSC_SDA_OC_MSS 0x2
@@ -37,11 +38,14 @@ struct channel_path_desc {
struct channel_path;
struct css_general_char {
- u64 : 41;
+ u64 : 12;
+ u32 dynio : 1; /* bit 12 */
+ u32 : 28;
u32 aif : 1; /* bit 41 */
u32 : 3;
u32 mcss : 1; /* bit 45 */
- u32 : 2;
+ u32 fcs : 1; /* bit 46 */
+ u32 : 1;
u32 ext_mb : 1; /* bit 48 */
u32 : 7;
u32 aif_tdd : 1; /* bit 56 */
@@ -49,7 +53,9 @@ struct css_general_char {
u32 qebsm : 1; /* bit 58 */
u32 : 8;
u32 aif_osa : 1; /* bit 67 */
- u32 : 20;
+ u32 : 14;
+ u32 cib : 1; /* bit 82 */
+ u32 : 5;
u32 fcx : 1; /* bit 88 */
u32 : 7;
}__attribute__((packed));
@@ -86,8 +92,11 @@ struct channel_subsystem;
extern int chsc_secm(struct channel_subsystem *, int);
int chsc_chp_vary(struct chp_id chpid, int on);
-int chsc_determine_channel_path_description(struct chp_id chpid,
- struct channel_path_desc *desc);
+int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
+ int c, int m,
+ struct chsc_response_struct *resp);
+int chsc_determine_base_channel_path_desc(struct chp_id chpid,
+ struct channel_path_desc *desc);
void chsc_chp_online(struct chp_id chpid);
void chsc_chp_offline(struct chp_id chpid);
int chsc_get_channel_measurement_chars(struct channel_path *chp);