2000-01-23 12:25:19 +00:00
|
|
|
.\"
|
|
|
|
|
.\" Device driver optimized for the Symbios/LSI 53C896/53C895A/53C1010
|
|
|
|
|
.\" PCI-SCSI controllers.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Copyright (C) 1999-2000 Gerard Roudier <groudier@club-internet.fr>
|
|
|
|
|
.\"
|
|
|
|
|
.\" This driver also supports the following Symbios/LSI PCI-SCSI chips:
|
|
|
|
|
.\" 53C810A, 53C825A, 53C860, 53C875, 53C876, 53C885, 53C895.
|
|
|
|
|
.\"
|
|
|
|
|
.\" but does not support earlier chips as the following ones:
|
|
|
|
|
.\" 53C810, 53C815, 53C825.
|
|
|
|
|
.\"
|
|
|
|
|
.\" This driver for FreeBSD-CAM is derived from the Linux sym53c8xx driver.
|
|
|
|
|
.\" Copyright (C) 1998-1999 Gerard Roudier
|
|
|
|
|
.\"
|
|
|
|
|
.\" The sym53c8xx driver is derived from the ncr53c8xx driver that had been
|
|
|
|
|
.\" a port of the FreeBSD ncr driver to Linux-1.2.13.
|
|
|
|
|
.\"
|
|
|
|
|
.\" The original ncr driver has been written for 386bsd and FreeBSD by
|
|
|
|
|
.\" Wolfgang Stanglmeier <wolf@cologne.de>
|
|
|
|
|
.\" Stefan Esser <se@mi.Uni-Koeln.de>
|
|
|
|
|
.\" Copyright (C) 1994 Wolfgang Stanglmeier
|
|
|
|
|
.\"
|
|
|
|
|
.\" The initialization code, and part of the code that addresses
|
|
|
|
|
.\" FreeBSD-CAM services is based on the aic7xxx driver for FreeBSD-CAM
|
|
|
|
|
.\" written by Justin T. Gibbs.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Other major contributions:
|
|
|
|
|
.\"
|
|
|
|
|
.\" NVRAM detection and reading.
|
|
|
|
|
.\" Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
|
|
|
|
|
.\"
|
|
|
|
|
.\" ----------------------------------------------------------------------------
|
|
|
|
|
.\"
|
|
|
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
|
|
|
.\" modification, are permitted provided that the following conditions
|
|
|
|
|
.\" are met:
|
|
|
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
|
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
|
|
|
.\" 3. The name of the author may not be used to endorse or promote products
|
|
|
|
|
.\" derived from this software without specific prior written permission.
|
|
|
|
|
.\"
|
|
|
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
|
|
|
|
|
.\" ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
|
.\" SUCH DAMAGE.
|
|
|
|
|
.\"
|
|
|
|
|
.\" $FreeBSD$
|
|
|
|
|
.\"
|
|
|
|
|
.Dd January 12, 2000
|
|
|
|
|
.Dt SYM 4 i386
|
|
|
|
|
.Os FreeBSD
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm sym
|
|
|
|
|
.Nd Symbios/LSI Logic PCI-SCSI host adapter driver
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
For any number of cards:
|
2000-01-23 17:00:18 +00:00
|
|
|
.Cd device sym
|
2000-01-23 12:25:19 +00:00
|
|
|
.Pp
|
|
|
|
|
To disable PCI parity checking (needed for broken bridges)
|
|
|
|
|
.Cd options SYM_SETUP_PCI_PARITY=<boolean>
|
|
|
|
|
.Pp
|
|
|
|
|
To control driver probing against HVD buses
|
|
|
|
|
.Cd options SYM_SETUP_SCSI_DIFF=<bit combination>
|
|
|
|
|
.Pp
|
|
|
|
|
To control chip attachment balancing between the ncr driver and this driver
|
|
|
|
|
.Cd options SYM_SETUP_LP_PROBE_MAP=<bit combination>
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
This driver provides support for the Symbios/LSI Logic
|
|
|
|
|
.Tn 53C810A,
|
|
|
|
|
.Tn 53C825A,
|
|
|
|
|
.Tn 53C860,
|
|
|
|
|
.Tn 53C875,
|
|
|
|
|
.Tn 53C876,
|
|
|
|
|
.Tn 53C895,
|
|
|
|
|
.Tn 53C895A,
|
|
|
|
|
.Tn 53C896,
|
|
|
|
|
.Tn 53C897,
|
|
|
|
|
.Tn 53C1510D,
|
|
|
|
|
and
|
|
|
|
|
.Tn 53C1010
|
|
|
|
|
PCI-SCSI controllers.
|
|
|
|
|
.Pp
|
|
|
|
|
Driver features include support for wide SCSI busses, fast10, fast20,
|
|
|
|
|
fast40 and fast80-dt synchronous data transfers depending on controller
|
2000-03-03 14:05:08 +00:00
|
|
|
capabilities.
|
|
|
|
|
It also provides generic SCSI features as tagged command
|
|
|
|
|
queuing and auto-request sense.
|
|
|
|
|
This driver is configured by default
|
2000-01-23 12:25:19 +00:00
|
|
|
for a maximum of 446 outstanding commands per bus, 8 LUNs per target
|
2000-03-03 14:05:08 +00:00
|
|
|
and 64 tagged tasks per LUN.
|
|
|
|
|
These numbers are not so limited by design,
|
2000-01-23 12:25:19 +00:00
|
|
|
as have been considered reasonable values for current SCSI technology.
|
|
|
|
|
These values can be increased by changing appropriate
|
|
|
|
|
constants in driver header files (not recommended).
|
|
|
|
|
.Pp
|
|
|
|
|
This driver requires the PCI-SCSI chip to implement LOAD/STORE SCRIPTS
|
|
|
|
|
instructions and therefore it does not provide support for 53C810 revid < 16,
|
2000-03-03 14:05:08 +00:00
|
|
|
53C825 revid < 16 and all 53C815 revisions.
|
|
|
|
|
The generic
|
2000-01-23 12:25:19 +00:00
|
|
|
.Nm ncr
|
|
|
|
|
driver can be used to support these early chips.
|
|
|
|
|
.Pp
|
|
|
|
|
By default, when both the
|
|
|
|
|
.Nm ncr
|
|
|
|
|
and
|
|
|
|
|
.Nm
|
|
|
|
|
drivers are configured, the
|
|
|
|
|
.Nm
|
|
|
|
|
driver takes precedence over the
|
|
|
|
|
.Nm ncr
|
|
|
|
|
driver for all chips that are supported by
|
2000-03-03 14:05:08 +00:00
|
|
|
both drivers.
|
|
|
|
|
As result, the
|
2000-01-23 12:25:19 +00:00
|
|
|
.Nm ncr
|
|
|
|
|
driver does only attach the 53C8XX
|
|
|
|
|
chips that donnot support LOAD/STORE (i.e.: 53C810, 53C815 and 53C825).
|
|
|
|
|
User can change the balancing of chip types between drivers by defining
|
|
|
|
|
the
|
|
|
|
|
.Ar SYM_SETUP_LP_PROBE_MAP
|
|
|
|
|
kernel configuration option as follows:
|
|
|
|
|
.Bl -column "Bit " "53C8XXA, 53C8XX, 53C8XX, 53C8XX, 53C8XX, 53C8XX"
|
|
|
|
|
.Em Bit Devices attached by ncr instead
|
|
|
|
|
1 53C810a, 53C860
|
|
|
|
|
2 53C825a, 53C875, 53C876, 53C885, 53C895
|
|
|
|
|
4 53C895a, 53C896, 53C897, 53C1510d
|
|
|
|
|
.El
|
|
|
|
|
.Ed
|
|
|
|
|
.Pp
|
|
|
|
|
For example, if
|
|
|
|
|
.Ar SYM_SETUP_LP_PROBE_MAP
|
|
|
|
|
is supplied with value 7, all the
|
|
|
|
|
above chips will be attached by the
|
|
|
|
|
.Nm ncr
|
|
|
|
|
driver and the
|
|
|
|
|
.Nm
|
|
|
|
|
driver will only
|
|
|
|
|
attach the 53C1010 Ultra-3 controllers.
|
|
|
|
|
.Pp
|
|
|
|
|
HVD/LVD capable controllers (895, 895A, 896, 897 and 1010) report
|
2000-03-03 14:05:08 +00:00
|
|
|
the actual bus mode from the STEST4 chip IO registers.
|
|
|
|
|
This feature
|
2000-01-23 12:25:19 +00:00
|
|
|
allows to safely probe against bus mode and to set up the chip
|
2000-03-03 14:05:08 +00:00
|
|
|
accordingly.
|
|
|
|
|
By default the driver only supports HVD for these chips.
|
2000-01-23 12:25:19 +00:00
|
|
|
For other chips that can support HVD but not LVD, the driver has to probe
|
|
|
|
|
implementation dependent registers (GPIO) in order to detect HVD bus mode.
|
|
|
|
|
Only HVD implementations that conform with Symbios Logic recommendation can
|
2000-03-03 14:05:08 +00:00
|
|
|
be detected by the driver.
|
|
|
|
|
When the
|
2000-01-23 12:25:19 +00:00
|
|
|
.Ar SYM_SETUP_SCSI_DIFF
|
|
|
|
|
kernel is provided
|
|
|
|
|
as value 1, the driver will also probe against HVD for 825a, 875, 876 and
|
|
|
|
|
885 chips, assuming Symbios Logic compatible implementation of HVD.
|
|
|
|
|
.Pp
|
|
|
|
|
When supplied as 0, the
|
|
|
|
|
.Ar SYM_SETUP_PCI_PARITY
|
|
|
|
|
kernel configuration option
|
2000-03-03 14:05:08 +00:00
|
|
|
indicates the driver not to enable PCI parity checking.
|
|
|
|
|
PCI parity
|
2000-01-23 12:25:19 +00:00
|
|
|
checking should not be an option for PCI-SCSI controllers, but some
|
|
|
|
|
systems have been reported to fail using 53C8XX chips due to spurious or
|
2000-03-03 14:05:08 +00:00
|
|
|
permanent PCI parity errors detected.
|
|
|
|
|
This option is supplied for
|
2000-01-23 12:25:19 +00:00
|
|
|
convenience but it is not recommended nor supported.
|
|
|
|
|
.Pp
|
|
|
|
|
This driver offers other options that are not currently exported to user.
|
2000-03-03 14:05:08 +00:00
|
|
|
They are defined and documented in the sym_conf.h driver file.
|
|
|
|
|
It is not
|
|
|
|
|
recommended to change these options unless absolute need.
|
|
|
|
|
Some of these
|
2000-01-23 12:25:19 +00:00
|
|
|
options are planned to be exported through SYSCTL or equivalent mechanism
|
|
|
|
|
in a further driver release and therefore, no compatibility is guaranteed.
|
|
|
|
|
.Pp
|
|
|
|
|
At initialization, the driver tries to detect and read user settings from
|
2000-03-03 14:05:08 +00:00
|
|
|
controller NVRAM.
|
|
|
|
|
The Symbios/Logic NVRAM layout and the Tekram NVRAM
|
|
|
|
|
layout are currently supported.
|
|
|
|
|
If the reading of the NVRAM succeeds, the
|
2000-01-23 12:25:19 +00:00
|
|
|
following settings are taken into account and reported to CAM:
|
|
|
|
|
.Pp
|
|
|
|
|
.Bl -column "SCSI parity checking " "Symbios " "Tekram"
|
|
|
|
|
.Em Host settings Symbios Tekram
|
|
|
|
|
SCSI parity checking Y N
|
|
|
|
|
Host SCSI ident Y Y
|
|
|
|
|
Verbose messages Y N
|
|
|
|
|
Scan targets hi-lo Y N
|
|
|
|
|
Avoid SCSI bus reset Y N
|
|
|
|
|
.Pp
|
|
|
|
|
.El
|
|
|
|
|
.Bl -column "Synchronous period " "Symbios " "Tekram"
|
|
|
|
|
.Em Device settings Symbios Tekram
|
|
|
|
|
Synchronous period Y Y
|
|
|
|
|
SCSI bus width Y Y
|
|
|
|
|
Queue tag enable Y Y
|
|
|
|
|
Number of tags NA Y
|
|
|
|
|
Disconnect enable Y Y
|
|
|
|
|
Scan at boot time Y N
|
|
|
|
|
Scan LUN Y N
|
|
|
|
|
.El
|
|
|
|
|
.Pp
|
|
|
|
|
Devices that are configured as disabled for 'scan' in the NVRAM are not
|
2000-03-03 14:05:08 +00:00
|
|
|
reported to CAM at system start-up.
|
|
|
|
|
They can be discovered later using
|
2000-01-23 12:25:19 +00:00
|
|
|
the
|
|
|
|
|
.Nm camcontrol rescan
|
|
|
|
|
command.
|
|
|
|
|
.Pp
|
|
|
|
|
The table below summarizes the main features and capabilities of the
|
|
|
|
|
NCR/Symbios/LSI Logic 53C8XX family of PCI-SCSI controllers.
|
|
|
|
|
.Pp
|
|
|
|
|
.Bl -column sym53c1510d "Sync " "Width " "SRAM " "PCI64"
|
|
|
|
|
.Em Chip Sync Width SRAM PCI64 Supported
|
|
|
|
|
sym53c810 10MHz 8Bit N N N
|
|
|
|
|
sym53c810a 10MHz 8Bit N N Y
|
|
|
|
|
sym53c815 10MHz 8Bit N N N
|
|
|
|
|
sym53c825 10MHz 16Bit N N N
|
|
|
|
|
sym53c825a 10MHz 16Bit 4KB N Y
|
|
|
|
|
sym53c860 20MHz 8Bit N N Y
|
|
|
|
|
sym53c875 20MHz 16Bit 4KB N Y
|
|
|
|
|
sym53c876 20MHz 16Bit 4KB N Y
|
|
|
|
|
sym53c885 20MHz 16Bit 4KB N Y
|
|
|
|
|
sym53c895 40MHz 16Bit 4KB N Y
|
|
|
|
|
sym53c895A 40MHz 16Bit 8KB N Y
|
|
|
|
|
sym53c896 40MHz 16Bit 8KB Y Y
|
|
|
|
|
sym53c897 40MHz 16Bit 8KB Y Y
|
|
|
|
|
sym53c1510D 40MHz 16Bit 4KB Y Y
|
|
|
|
|
sym53c1010 80MHz 16Bit 8KB Y Y
|
|
|
|
|
.El
|
|
|
|
|
.Pp
|
|
|
|
|
.Sh BUGS
|
|
|
|
|
No known bugs.
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr cd 4 ,
|
|
|
|
|
.Xr da 4 ,
|
|
|
|
|
.Xr ncr 4 ,
|
|
|
|
|
.Xr sa 4 ,
|
|
|
|
|
.Xr scsi 4 ,
|
|
|
|
|
.Xr camcontrol 8
|
|
|
|
|
.Sh AUTHORS
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
driver has been written by Gerard Roudier and is derived from the
|
|
|
|
|
Linux sym53c8xx driver from the same author.
|
|
|
|
|
The sym53c8xx driver is derived from the ncr53c8xx driver that had been
|
|
|
|
|
a port of the
|
|
|
|
|
.Fx
|
|
|
|
|
.Nm ncr
|
|
|
|
|
driver to Linux-1.2.13.
|
|
|
|
|
The original
|
|
|
|
|
.Nm ncr
|
|
|
|
|
driver was written for 386BSD and
|
|
|
|
|
.Fx
|
|
|
|
|
by Wolfgang Stanglmeier and Stefan Esser.
|
|
|
|
|
.Sh HISTORY
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
driver appeared in
|
|
|
|
|
.Fx 4.0 .
|
|
|
|
|
|
