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authorStefan Weinhuber <wein@de.ibm.com>2009-03-26 15:23:48 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-03-26 15:24:05 +0100
commitf3eb5384cf0325c02e306b1d81e70f81a03d7432 (patch)
tree4d75517ad2c61ac2f8b6431eafd62b5d32c188ed /drivers/s390/block/dasd_eckd.h
parentb44b0ab3bac16356f03e94b1b49ba9305710c445 (diff)
[S390] dasd: add High Performance FICON support
To support High Performance FICON, the DASD device driver has to translate I/O requests into the new transport mode control words (TCW) instead of the traditional (command mode) CCW 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.h40
1 files changed, 35 insertions, 5 deletions
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index eecfa776db1..ad45bcac3ce 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -38,8 +38,11 @@
#define DASD_ECKD_CCW_RELEASE 0x94
#define DASD_ECKD_CCW_READ_CKD_MT 0x9e
#define DASD_ECKD_CCW_WRITE_CKD_MT 0x9d
+#define DASD_ECKD_CCW_WRITE_TRACK_DATA 0xA5
+#define DASD_ECKD_CCW_READ_TRACK_DATA 0xA6
#define DASD_ECKD_CCW_RESERVE 0xB4
#define DASD_ECKD_CCW_PFX 0xE7
+#define DASD_ECKD_CCW_PFX_READ 0xEA
#define DASD_ECKD_CCW_RSCK 0xF9
/*
@@ -123,7 +126,9 @@ struct DE_eckd_data {
unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
__u8 ep_format; /* Extended Parameter format byte */
__u8 ep_prio; /* Extended Parameter priority I/O byte */
- __u8 ep_reserved[6]; /* Extended Parameter Reserved */
+ __u8 ep_reserved1; /* Extended Parameter Reserved */
+ __u8 ep_rec_per_track; /* Number of records on a track */
+ __u8 ep_reserved[4]; /* Extended Parameter Reserved */
} __attribute__ ((packed));
struct LO_eckd_data {
@@ -144,11 +149,37 @@ struct LO_eckd_data {
__u16 length;
} __attribute__ ((packed));
+struct LRE_eckd_data {
+ struct {
+ unsigned char orientation:2;
+ unsigned char operation:6;
+ } __attribute__ ((packed)) operation;
+ struct {
+ unsigned char length_valid:1;
+ unsigned char length_scope:1;
+ unsigned char imbedded_ccw_valid:1;
+ unsigned char check_bytes:2;
+ unsigned char imbedded_count_valid:1;
+ unsigned char reserved:1;
+ unsigned char read_count_suffix:1;
+ } __attribute__ ((packed)) auxiliary;
+ __u8 imbedded_ccw;
+ __u8 count;
+ struct ch_t seek_addr;
+ struct chr_t search_arg;
+ __u8 sector;
+ __u16 length;
+ __u8 imbedded_count;
+ __u8 extended_operation;
+ __u16 extended_parameter_length;
+ __u8 extended_parameter[0];
+} __attribute__ ((packed));
+
/* Prefix data for format 0x00 and 0x01 */
struct PFX_eckd_data {
unsigned char format;
struct {
- unsigned char define_extend:1;
+ unsigned char define_extent:1;
unsigned char time_stamp:1;
unsigned char verify_base:1;
unsigned char hyper_pav:1;
@@ -158,9 +189,8 @@ struct PFX_eckd_data {
__u8 aux;
__u8 base_lss;
__u8 reserved[7];
- struct DE_eckd_data define_extend;
- struct LO_eckd_data locate_record;
- __u8 LO_extended_data[4];
+ struct DE_eckd_data define_extent;
+ struct LRE_eckd_data locate_record;
} __attribute__ ((packed));
struct dasd_eckd_characteristics {