11da177e4SLinus Torvaldscomment "S/390 block device drivers" 261d48c2cSMartin Schwidefsky depends on S390 && BLOCK 31da177e4SLinus Torvalds 41da177e4SLinus Torvaldsconfig BLK_DEV_XPRAM 51da177e4SLinus Torvalds tristate "XPRAM disk support" 661d48c2cSMartin Schwidefsky depends on S390 && BLOCK 71da177e4SLinus Torvalds help 81da177e4SLinus Torvalds Select this option if you want to use your expanded storage on S/390 91da177e4SLinus Torvalds or zSeries as a disk. This is useful as a _fast_ swap device if you 101da177e4SLinus Torvalds want to access more than 2G of memory when running in 31 bit mode. 111da177e4SLinus Torvalds This option is also available as a module which will be called 121da177e4SLinus Torvalds xpram. If unsure, say "N". 131da177e4SLinus Torvalds 141da177e4SLinus Torvaldsconfig DCSSBLK 151da177e4SLinus Torvalds tristate "DCSSBLK support" 1661d48c2cSMartin Schwidefsky depends on S390 && BLOCK 171da177e4SLinus Torvalds help 181da177e4SLinus Torvalds Support for dcss block device 191da177e4SLinus Torvalds 201da177e4SLinus Torvaldsconfig DASD 211da177e4SLinus Torvalds tristate "Support for DASD devices" 2261d48c2cSMartin Schwidefsky depends on CCW && BLOCK 2308a8a0c5SJosef 'Jeff' Sipek select IOSCHED_DEADLINE 241da177e4SLinus Torvalds help 251da177e4SLinus Torvalds Enable this option if you want to access DASDs directly utilizing 261da177e4SLinus Torvalds S/390s channel subsystem commands. This is necessary for running 271da177e4SLinus Torvalds natively on a single image or an LPAR. 281da177e4SLinus Torvalds 291da177e4SLinus Torvaldsconfig DASD_PROFILE 301da177e4SLinus Torvalds bool "Profiling support for dasd devices" 311da177e4SLinus Torvalds depends on DASD 321da177e4SLinus Torvalds help 331da177e4SLinus Torvalds Enable this option if you want to see profiling information 341da177e4SLinus Torvalds in /proc/dasd/statistics. 351da177e4SLinus Torvalds 361da177e4SLinus Torvaldsconfig DASD_ECKD 371da177e4SLinus Torvalds tristate "Support for ECKD Disks" 381da177e4SLinus Torvalds depends on DASD 391da177e4SLinus Torvalds help 401da177e4SLinus Torvalds ECKD devices are the most commonly used devices. You should enable 411da177e4SLinus Torvalds this option unless you are very sure to have no ECKD device. 421da177e4SLinus Torvalds 431da177e4SLinus Torvaldsconfig DASD_FBA 441da177e4SLinus Torvalds tristate "Support for FBA Disks" 451da177e4SLinus Torvalds depends on DASD 461da177e4SLinus Torvalds help 471da177e4SLinus Torvalds Select this option to be able to access FBA devices. It is safe to 481da177e4SLinus Torvalds say "Y". 491da177e4SLinus Torvalds 501da177e4SLinus Torvaldsconfig DASD_DIAG 511da177e4SLinus Torvalds tristate "Support for DIAG access to Disks" 52d0b2eaa3SPeter Oberparleiter depends on DASD 531da177e4SLinus Torvalds help 541da177e4SLinus Torvalds Select this option if you want to use Diagnose250 command to access 551da177e4SLinus Torvalds Disks under VM. If you are not running under VM or unsure what it is, 561da177e4SLinus Torvalds say "N". 571da177e4SLinus Torvalds 5820c64468SStefan Weinhuberconfig DASD_EER 5920c64468SStefan Weinhuber bool "Extended error reporting (EER)" 6020c64468SStefan Weinhuber depends on DASD 6120c64468SStefan Weinhuber help 6220c64468SStefan Weinhuber This driver provides a character device interface to the 6320c64468SStefan Weinhuber DASD extended error reporting. This is only needed if you want to 6420c64468SStefan Weinhuber use applications written for the EER facility. 65