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authorStefan Haberland <stefan.haberland@de.ibm.com>2011-01-05 12:48:06 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-05 12:47:30 +0100
commite4dbb0f2b5dd6a836d0e5c60aa5f573e0bbcf76a (patch)
treecb18d0b08f2ccc8d6a078456b77f111805777db8 /arch/s390/include
parent6f272b9cec285a9610a2acf101f694bc58bed37e (diff)
downloadlinux-linaro-android-e4dbb0f2b5dd6a836d0e5c60aa5f573e0bbcf76a.tar.gz
[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/include')
-rw-r--r--arch/s390/include/asm/dasd.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/dasd.h b/arch/s390/include/asm/dasd.h
index 47fcdada5d2..0be28efe5b6 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