xref: /openbmc/linux/drivers/scsi/mpt3sas/Kconfig (revision 39718fe7)
1#
2# Kernel configuration file for the MPT3SAS
3#
4# This code is based on drivers/scsi/mpt3sas/Kconfig
5# Copyright (C) 2012-2014  LSI Corporation
6#  (mailto:DL-MPTFusionLinux@lsi.com)
7
8# This program is free software; you can redistribute it and/or
9# modify it under the terms of the GNU General Public License
10# as published by the Free Software Foundation; either version 2
11# of the License, or (at your option) any later version.
12
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16# GNU General Public License for more details.
17
18# NO WARRANTY
19# THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
20# CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
21# LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
22# MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
23# solely responsible for determining the appropriateness of using and
24# distributing the Program and assumes all risks associated with its
25# exercise of rights under this Agreement, including but not limited to
26# the risks and costs of program errors, damage to or loss of data,
27# programs or equipment, and unavailability or interruption of operations.
28
29# DISCLAIMER OF LIABILITY
30# NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
31# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32# DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
33# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
34# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
35# USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
36# HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
37
38# You should have received a copy of the GNU General Public License
39# along with this program; if not, write to the Free Software
40# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
41# USA.
42
43config SCSI_MPT3SAS
44	tristate "LSI MPT Fusion SAS 3.0 & SAS 2.0 Device Driver"
45	depends on PCI && SCSI
46	select SCSI_SAS_ATTRS
47	select RAID_ATTRS
48	select IRQ_POLL
49	help
50	This driver supports PCI-Express SAS 12Gb/s Host Adapters.
51
52config SCSI_MPT2SAS_MAX_SGE
53	int "LSI MPT Fusion SAS 2.0 Max number of SG Entries (16 - 256)"
54	depends on PCI && SCSI && SCSI_MPT3SAS
55	default "128"
56	range 16 256
57	help
58	This option allows you to specify the maximum number of scatter-
59	gather entries per I/O. The driver default is 128, which matches
60	MAX_PHYS_SEGMENTS in most kernels.  However in SuSE kernels this
61	can be 256. However, it may decreased down to 16.  Decreasing this
62	parameter will reduce memory requirements on a per controller instance.
63
64config SCSI_MPT3SAS_MAX_SGE
65	int "LSI MPT Fusion SAS 3.0 Max number of SG Entries (16 - 256)"
66	depends on PCI && SCSI && SCSI_MPT3SAS
67	default "128"
68	range 16 256
69	help
70	This option allows you to specify the maximum number of scatter-
71	gather entries per I/O. The driver default is 128, which matches
72	MAX_PHYS_SEGMENTS in most kernels.  However in SuSE kernels this
73	can be 256. However, it may decreased down to 16.  Decreasing this
74	parameter will reduce memory requirements on a per controller instance.
75
76config SCSI_MPT2SAS
77	tristate "Legacy MPT2SAS config option"
78	default n
79	select SCSI_MPT3SAS
80	depends on PCI && SCSI
81	help
82	Dummy config option for backwards compatibility: configure the MPT3SAS
83	driver instead.
84