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| author | Stefan Weinhuber <wein@de.ibm.com> | 2009-03-26 15:23:48 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-03-26 15:24:05 +0100 |
| commit | f3eb5384cf0325c02e306b1d81e70f81a03d7432 (patch) | |
| tree | 4d75517ad2c61ac2f8b6431eafd62b5d32c188ed /drivers/s390/block/dasd_eckd.h | |
| parent | [S390] dasd: add large volume support (diff) | |
| download | linux-f3eb5384cf0325c02e306b1d81e70f81a03d7432.tar.xz linux-f3eb5384cf0325c02e306b1d81e70f81a03d7432.zip | |
[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.h | 40 |
1 files changed, 35 insertions, 5 deletions
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h index eecfa776db15..ad45bcac3ce4 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 { |