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scsi: docs: convert megaraid.txt to ReST 

Link: https://lore.kernel.org/r/b7ee59230c5a33ff6d60edba0d0bcf3e2aeaa88f.1583136624.git.mchehab+huawei@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Mauro Carvalho Chehab 2020-03-02 09:15:55 +01:00 committed by Martin K. Petersen
parent b4adb75781
commit a756185de6
3 changed files with 29 additions and 21 deletions
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1
Documentation/scsi/index.rst
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@ -26,5 +26,6 @@ Linux SCSI Subsystem
libsas
link_power_management_policy
lpfc
megaraid
scsi_transport_srp/figures

47
Documentation/scsi/megaraid.txt → Documentation/scsi/megaraid.rst
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@ -1,7 +1,10 @@
Notes on Management Module
~~~~~~~~~~~~~~~~~~~~~~~~~~
.. SPDX-License-Identifier: GPL-2.0
Overview:
==========================
Notes on Management Module
==========================
Overview
--------
Different classes of controllers from LSI Logic accept and respond to the
@ -25,28 +28,32 @@ ioctl commands. But this module is envisioned to handle all user space level
interactions. So any 'proc', 'sysfs' implementations will be localized in this
common module.
Credits:
Credits
-------
"Shared code in a third module, a "library module", is an acceptable
solution. modprobe automatically loads dependent modules, so users
running "modprobe driver1" or "modprobe driver2" would automatically
load the shared library module."
::
- Jeff Garzik (jgarzik@pobox.com), 02.25.2004 LKML
"Shared code in a third module, a "library module", is an acceptable
solution. modprobe automatically loads dependent modules, so users
running "modprobe driver1" or "modprobe driver2" would automatically
load the shared library module."
"As Jeff hinted, if your userspace<->driver API is consistent between
your new MPT-based RAID controllers and your existing megaraid driver,
then perhaps you need a single small helper module (lsiioctl or some
better name), loaded by both mptraid and megaraid automatically, which
handles registering the /dev/megaraid node dynamically. In this case,
both mptraid and megaraid would register with lsiioctl for each
adapter discovered, and lsiioctl would essentially be a switch,
redirecting userspace tool ioctls to the appropriate driver."
- Jeff Garzik (jgarzik@pobox.com), 02.25.2004 LKML
- Matt Domsch, (Matt_Domsch@dell.com), 02.25.2004 LKML
::
Design:
"As Jeff hinted, if your userspace<->driver API is consistent between
your new MPT-based RAID controllers and your existing megaraid driver,
then perhaps you need a single small helper module (lsiioctl or some
better name), loaded by both mptraid and megaraid automatically, which
handles registering the /dev/megaraid node dynamically. In this case,
both mptraid and megaraid would register with lsiioctl for each
adapter discovered, and lsiioctl would essentially be a switch,
redirecting userspace tool ioctls to the appropriate driver."
- Matt Domsch, (Matt_Domsch@dell.com), 02.25.2004 LKML
Design
------
The Common Management Module is implemented in megaraid_mm.[ch] files. This
@ -61,7 +68,7 @@ uioc_t. The management module converts the older ioctl packets from the older
applications into uioc_t. After driver handles the uioc_t, the common module
will convert that back into the old format before returning to applications.
As new applications evolve and replace the old ones, the old packet format
As new applications evolve and replace the old ones, the old packet format
will be retired.
Common module dedicates one uioc_t packet to each controller registered. This

2
MAINTAINERS
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@ -10639,7 +10639,7 @@ L: megaraidlinux.pdl@broadcom.com
L: linux-scsi@vger.kernel.org
W: http://www.avagotech.com/support/
S: Maintained
F: Documentation/scsi/megaraid.txt
F: Documentation/scsi/megaraid.rst
F: drivers/scsi/megaraid.*
F: drivers/scsi/megaraid/