1# SPDX-License-Identifier: GPL-2.0
2comment "S/390 block device drivers"
3	depends on S390 && BLOCK
4
5config BLK_DEV_XPRAM
6	def_tristate m
7	prompt "XPRAM disk support"
8	depends on S390 && BLOCK
9	help
10	  Select this option if you want to use your expanded storage on S/390
11	  or zSeries as a disk.  This is useful as a _fast_ swap device if you
12	  want to access more than 2G of memory when running in 31 bit mode.
13	  This option is also available as a module which will be called
14	  xpram.  If unsure, say "N".
15
16config DCSSBLK
17	def_tristate m
18	select FS_DAX_LIMITED
19	select DAX_DRIVER
20	prompt "DCSSBLK support"
21	depends on S390 && BLOCK
22	help
23	  Support for dcss block device
24
25config DASD
26	def_tristate y
27	prompt "Support for DASD devices"
28	depends on CCW && BLOCK
29	select IOSCHED_DEADLINE
30	help
31	  Enable this option if you want to access DASDs directly utilizing
32	  S/390s channel subsystem commands. This is necessary for running
33	  natively on a single image or an LPAR.
34
35config DASD_PROFILE
36	def_bool y
37	prompt "Profiling support for dasd devices"
38	depends on DASD
39	help
40	  Enable this option if you want to see profiling information
41          in /proc/dasd/statistics.
42
43config DASD_ECKD
44	def_tristate y
45	prompt "Support for ECKD Disks"
46	depends on DASD
47	help
48	  ECKD devices are the most commonly used devices. You should enable
49	  this option unless you are very sure to have no ECKD device.
50
51config DASD_FBA
52	def_tristate y
53	prompt "Support for FBA  Disks"
54	depends on DASD
55	help
56	  Select this option to be able to access FBA devices. It is safe to
57	  say "Y".
58
59config DASD_DIAG
60	def_tristate y
61	prompt "Support for DIAG access to Disks"
62	depends on DASD
63	help
64	  Select this option if you want to use Diagnose250 command to access
65	  Disks under VM.  If you are not running under VM or unsure what it is,
66	  say "N".
67
68config DASD_EER
69	def_bool y
70	prompt "Extended error reporting (EER)"
71	depends on DASD
72	help
73	  This driver provides a character device interface to the
74	  DASD extended error reporting. This is only needed if you want to
75	  use applications written for the EER facility.
76
77config SCM_BLOCK
78	def_tristate m
79	prompt "Support for Storage Class Memory"
80	depends on S390 && BLOCK && EADM_SCH && SCM_BUS
81	help
82	  Block device driver for Storage Class Memory (SCM). This driver
83	  provides a block device interface for each available SCM increment.
84
85	  To compile this driver as a module, choose M here: the
86	  module will be called scm_block.
87