From 3d052595423b4432f4d599c1aeb1949ac0da7314 Mon Sep 17 00:00:00 2001 From: Horst Hummel Date: Thu, 27 Apr 2006 18:40:28 -0700 Subject: [PATCH] s390: dasd device identifiers Generate new sysfs-attribute 'uid' that contains an device specific unique identifier. This can be used to identity multiple ALIASES of the same physical device (PAV). In addition the sysfs-attributes 'vendor' (containing the manufacturer of the device) and 'alias' (identify alias or base device) is added. This is first part of PAV support in LPAR (also valid on zVM). Signed-off-by: Horst Hummel Signed-off-by: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/s390/block/dasd_eckd.h | 46 +++++++++++++++++++++++++----------------- 1 file changed, 28 insertions(+), 18 deletions(-) (limited to 'drivers/s390/block/dasd_eckd.h') diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h index ad8524bb7bb3..d5734e976e1c 100644 --- a/drivers/s390/block/dasd_eckd.h +++ b/drivers/s390/block/dasd_eckd.h @@ -228,26 +228,36 @@ struct dasd_eckd_confdata { unsigned char HDA_manufacturer[3]; unsigned char HDA_location[2]; unsigned char HDA_seqno[12]; - __u16 ID; + __u8 ID; + __u8 unit_addr; } __attribute__ ((packed)) ned1; - struct { + union { struct { - unsigned char identifier:2; - unsigned char token_id:1; - unsigned char sno_valid:1; - unsigned char subst_sno:1; - unsigned char recNED:1; - unsigned char emuNED:1; - unsigned char reserved:1; - } __attribute__ ((packed)) flags; - __u8 descriptor; - __u8 reserved[2]; - unsigned char dev_type[6]; - unsigned char dev_model[3]; - unsigned char DASD_manufacturer[3]; - unsigned char DASD_location[2]; - unsigned char DASD_seqno[12]; - __u16 ID; + struct { + unsigned char identifier:2; + unsigned char token_id:1; + unsigned char sno_valid:1; + unsigned char subst_sno:1; + unsigned char recNED:1; + unsigned char emuNED:1; + unsigned char reserved:1; + } __attribute__ ((packed)) flags; + __u8 descriptor; + __u8 reserved[2]; + unsigned char dev_type[6]; + unsigned char dev_model[3]; + unsigned char DASD_manufacturer[3]; + unsigned char DASD_location[2]; + unsigned char DASD_seqno[12]; + __u16 ID; + } __attribute__ ((packed)) ned; + struct { + unsigned char flags; /* byte 0 */ + unsigned char res2[7]; /* byte 1- 7 */ + unsigned char sua_flags; /* byte 8 */ + __u8 base_unit_addr; /* byte 9 */ + unsigned char res3[22]; /* byte 10-31 */ + } __attribute__ ((packed)) sneq; } __attribute__ ((packed)) ned2; struct { struct { -- cgit v1.2.2