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[S390] add PAV support to the dasd driver.

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Add support for parallel-access-volumes to the dasd driver. This
allows concurrent access to dasd devices with multiple channel
programs.

Signed-off-by: Horst Hummel <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
This commit is contained in:
Horst Hummel 2006-06-29 15:08:18 +02:00 • committed by Martin Schwidefsky
commit 405455734e
7 changed files with 227 additions and 90 deletions
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8
include/asm-s390/dasd.h
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@ -68,10 +68,12 @@ typedef struct dasd_information2_t {
* 0x00: default features
* 0x01: readonly (ro)
* 0x02: use diag discipline (diag)
* 0x04: set the device initially online (internal use only)
*/
#define DASD_FEATURE_DEFAULT 0
#define DASD_FEATURE_READONLY 1
#define DASD_FEATURE_USEDIAG 2
#define DASD_FEATURE_DEFAULT 0x00
#define DASD_FEATURE_READONLY 0x01
#define DASD_FEATURE_USEDIAG 0x02
#define DASD_FEATURE_INITIAL_ONLINE 0x04
#define DASD_PARTN_BITS 2