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| author | Stefan Weinhuber <wein@de.ibm.com> | 2011-01-05 12:48:02 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 12:47:29 +0100 |
| commit | ef19298b406f93af4bb249f0776deb8366e97532 (patch) | |
| tree | 8b729739a57fd50e9fe67232b1c3b1264bf678a5 /drivers/s390/block/dasd_eckd.h | |
| parent | 9062014cb60194630272709da82d5879d563865e (diff) | |
| download | op-kernel-dev-ef19298b406f93af4bb249f0776deb8366e97532.zip op-kernel-dev-ef19298b406f93af4bb249f0776deb8366e97532.tar.gz | |
[S390] dasd: add High Performance FICON multitrack support
Some storage systems support multitrack High Performance FICON
requests, which read or write data to more than one track.
This patch enables the DASD device driver to generate multitrack
High Performance FICON requests.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd_eckd.h')
| -rw-r--r-- | drivers/s390/block/dasd_eckd.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h index 12097c2..2150aed 100644 --- a/drivers/s390/block/dasd_eckd.h +++ b/drivers/s390/block/dasd_eckd.h @@ -57,6 +57,10 @@ */ #define LV_COMPAT_CYL 0xFFFE + +#define FCX_MAX_DATA_FACTOR 65536 + + /***************************************************************************** * SECTION: Type Definitions ****************************************************************************/ @@ -455,6 +459,8 @@ struct dasd_eckd_private { struct alias_pav_group *pavgroup; struct alias_lcu *lcu; int count; + + u32 fcx_max_data; }; |
