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| author | Stefan Weinhuber <wein@de.ibm.com> | 2009-03-26 17:23:48 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-03-26 17:24:05 +0300 |
| commit | f3eb5384cf0325c02e306b1d81e70f81a03d7432 (patch) | |
| tree | 4d75517ad2c61ac2f8b6431eafd62b5d32c188ed /drivers/s390/block/dasd_int.h | |
| parent | b44b0ab3bac16356f03e94b1b49ba9305710c445 (diff) | |
| download | linux-f3eb5384cf0325c02e306b1d81e70f81a03d7432.tar.xz | |
[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_int.h')
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 29991a9fa07a..7b314c1d471e 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -157,7 +157,8 @@ struct dasd_ccw_req { struct dasd_block *block; /* the originating block device */ struct dasd_device *memdev; /* the device used to allocate this */ struct dasd_device *startdev; /* device the request is started on */ - struct ccw1 *cpaddr; /* address of channel program */ + void *cpaddr; /* address of ccw or tcw */ + unsigned char cpmode; /* 0 = cmd mode, 1 = itcw */ char status; /* status of this request */ short retries; /* A retry counter */ unsigned long flags; /* flags of this request */ @@ -573,12 +574,14 @@ int dasd_generic_notify(struct ccw_device *, int); void dasd_generic_handle_state_change(struct dasd_device *); int dasd_generic_read_dev_chars(struct dasd_device *, char *, void **, int); +char *dasd_get_sense(struct irb *); /* externals in dasd_devmap.c */ extern int dasd_max_devindex; extern int dasd_probeonly; extern int dasd_autodetect; extern int dasd_nopav; +extern int dasd_nofcx; int dasd_devmap_init(void); void dasd_devmap_exit(void); |