1*9fa1db4cSMartin Schwidefsky# SPDX-License-Identifier: GPL-2.0 21da177e4SLinus Torvaldscomment "S/390 block device drivers" 361d48c2cSMartin Schwidefsky depends on S390 && BLOCK 41da177e4SLinus Torvalds 51da177e4SLinus Torvaldsconfig BLK_DEV_XPRAM 66f9a3c33SMartin Schwidefsky def_tristate m 76f9a3c33SMartin Schwidefsky prompt "XPRAM disk support" 861d48c2cSMartin Schwidefsky depends on S390 && BLOCK 91da177e4SLinus Torvalds help 101da177e4SLinus Torvalds Select this option if you want to use your expanded storage on S/390 111da177e4SLinus Torvalds or zSeries as a disk. This is useful as a _fast_ swap device if you 121da177e4SLinus Torvalds want to access more than 2G of memory when running in 31 bit mode. 131da177e4SLinus Torvalds This option is also available as a module which will be called 141da177e4SLinus Torvalds xpram. If unsure, say "N". 151da177e4SLinus Torvalds 161da177e4SLinus Torvaldsconfig DCSSBLK 176f9a3c33SMartin Schwidefsky def_tristate m 187a2765f6SDan Williams select DAX 196f9a3c33SMartin Schwidefsky prompt "DCSSBLK support" 2061d48c2cSMartin Schwidefsky depends on S390 && BLOCK 211da177e4SLinus Torvalds help 221da177e4SLinus Torvalds Support for dcss block device 231da177e4SLinus Torvalds 241da177e4SLinus Torvaldsconfig DASD 256f9a3c33SMartin Schwidefsky def_tristate y 266f9a3c33SMartin Schwidefsky prompt "Support for DASD devices" 2761d48c2cSMartin Schwidefsky depends on CCW && BLOCK 2808a8a0c5SJosef 'Jeff' Sipek select IOSCHED_DEADLINE 291da177e4SLinus Torvalds help 301da177e4SLinus Torvalds Enable this option if you want to access DASDs directly utilizing 311da177e4SLinus Torvalds S/390s channel subsystem commands. This is necessary for running 321da177e4SLinus Torvalds natively on a single image or an LPAR. 331da177e4SLinus Torvalds 341da177e4SLinus Torvaldsconfig DASD_PROFILE 356f9a3c33SMartin Schwidefsky def_bool y 366f9a3c33SMartin Schwidefsky prompt "Profiling support for dasd devices" 371da177e4SLinus Torvalds depends on DASD 381da177e4SLinus Torvalds help 391da177e4SLinus Torvalds Enable this option if you want to see profiling information 401da177e4SLinus Torvalds in /proc/dasd/statistics. 411da177e4SLinus Torvalds 421da177e4SLinus Torvaldsconfig DASD_ECKD 436f9a3c33SMartin Schwidefsky def_tristate y 446f9a3c33SMartin Schwidefsky prompt "Support for ECKD Disks" 451da177e4SLinus Torvalds depends on DASD 461da177e4SLinus Torvalds help 471da177e4SLinus Torvalds ECKD devices are the most commonly used devices. You should enable 481da177e4SLinus Torvalds this option unless you are very sure to have no ECKD device. 491da177e4SLinus Torvalds 501da177e4SLinus Torvaldsconfig DASD_FBA 516f9a3c33SMartin Schwidefsky def_tristate y 526f9a3c33SMartin Schwidefsky prompt "Support for FBA Disks" 531da177e4SLinus Torvalds depends on DASD 541da177e4SLinus Torvalds help 551da177e4SLinus Torvalds Select this option to be able to access FBA devices. It is safe to 561da177e4SLinus Torvalds say "Y". 571da177e4SLinus Torvalds 581da177e4SLinus Torvaldsconfig DASD_DIAG 596f9a3c33SMartin Schwidefsky def_tristate y 606f9a3c33SMartin Schwidefsky prompt "Support for DIAG access to Disks" 61d0b2eaa3SPeter Oberparleiter depends on DASD 621da177e4SLinus Torvalds help 631da177e4SLinus Torvalds Select this option if you want to use Diagnose250 command to access 641da177e4SLinus Torvalds Disks under VM. If you are not running under VM or unsure what it is, 651da177e4SLinus Torvalds say "N". 661da177e4SLinus Torvalds 6720c64468SStefan Weinhuberconfig DASD_EER 686f9a3c33SMartin Schwidefsky def_bool y 696f9a3c33SMartin Schwidefsky prompt "Extended error reporting (EER)" 7020c64468SStefan Weinhuber depends on DASD 7120c64468SStefan Weinhuber help 7220c64468SStefan Weinhuber This driver provides a character device interface to the 7320c64468SStefan Weinhuber DASD extended error reporting. This is only needed if you want to 7420c64468SStefan Weinhuber use applications written for the EER facility. 75f30664e2SSebastian Ott 76f30664e2SSebastian Ottconfig SCM_BLOCK 77f30664e2SSebastian Ott def_tristate m 78f30664e2SSebastian Ott prompt "Support for Storage Class Memory" 79f30664e2SSebastian Ott depends on S390 && BLOCK && EADM_SCH && SCM_BUS 80f30664e2SSebastian Ott help 81f30664e2SSebastian Ott Block device driver for Storage Class Memory (SCM). This driver 82f30664e2SSebastian Ott provides a block device interface for each available SCM increment. 83f30664e2SSebastian Ott 84f30664e2SSebastian Ott To compile this driver as a module, choose M here: the 85f30664e2SSebastian Ott module will be called scm_block. 86