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| author | Stefan Haberland <stefan.haberland@de.ibm.com> | 2011-01-05 12:48:06 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 12:47:30 +0100 |
| commit | e4dbb0f2b5dd6a836d0e5c60aa5f573e0bbcf76a (patch) | |
| tree | cb18d0b08f2ccc8d6a078456b77f111805777db8 /arch/s390 | |
| parent | [S390] dasd: Prevent deadlock during suspend/resume. (diff) | |
| download | linux-e4dbb0f2b5dd6a836d0e5c60aa5f573e0bbcf76a.tar.xz linux-e4dbb0f2b5dd6a836d0e5c60aa5f573e0bbcf76a.zip | |
[S390] dasd: Add support for raw ECKD access.
Normal I/O operations through the DASD device driver give only access
to the data fields of an ECKD device even for track based I/O.
This patch extends the DASD device driver to give access to whole
ECKD tracks including count, key and data fields.
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/dasd.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/dasd.h b/arch/s390/include/asm/dasd.h index 47fcdada5d25..0be28efe5b66 100644 --- a/arch/s390/include/asm/dasd.h +++ b/arch/s390/include/asm/dasd.h @@ -73,6 +73,7 @@ typedef struct dasd_information2_t { * 0x02: use diag discipline (diag) * 0x04: set the device initially online (internal use only) * 0x08: enable ERP related logging + * 0x20: give access to raw eckd data */ #define DASD_FEATURE_DEFAULT 0x00 #define DASD_FEATURE_READONLY 0x01 @@ -81,6 +82,7 @@ typedef struct dasd_information2_t { #define DASD_FEATURE_ERPLOG 0x08 #define DASD_FEATURE_FAILFAST 0x10 #define DASD_FEATURE_FAILONSLCK 0x20 +#define DASD_FEATURE_USERAW 0x40 #define DASD_PARTN_BITS 2 |