^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) .. SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) =================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) The Linux NCR53C8XX/SYM53C8XX drivers README file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) =================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) Written by Gerard Roudier <groudier@free.fr>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) 21 Rue Carnot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 95170 DEUIL LA BARRE - FRANCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 29 May 1999
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) .. Contents:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 1. Introduction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 2. Supported chips and SCSI features
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 3. Advantages of the enhanced 896 driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 3.1 Optimized SCSI SCRIPTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 3.2 New features of the SYM53C896 (64 bit PCI dual LVD SCSI controller)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 4. Memory mapped I/O versus normal I/O
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 5. Tagged command queueing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 6. Parity checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 7. Profiling information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 8. Control commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 8.1 Set minimum synchronous period
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 8.2 Set wide size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 8.3 Set maximum number of concurrent tagged commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 8.4 Set order type for tagged command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 8.5 Set debug mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 8.6 Clear profile counters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 8.7 Set flag (no_disc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 8.8 Set verbose level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 8.9 Reset all logical units of a target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 8.10 Abort all tasks of all logical units of a target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 9. Configuration parameters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 10. Boot setup commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 10.1 Syntax
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 10.2 Available arguments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 10.2.1 Master parity checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 10.2.2 Scsi parity checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 10.2.3 Scsi disconnections
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 10.2.4 Special features
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 10.2.5 Ultra SCSI support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 10.2.6 Default number of tagged commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 10.2.7 Default synchronous period factor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 10.2.8 Negotiate synchronous with all devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 10.2.9 Verbosity level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 10.2.10 Debug mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 10.2.11 Burst max
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 10.2.12 LED support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 10.2.13 Max wide
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 10.2.14 Differential mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 10.2.15 IRQ mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 10.2.16 Reverse probe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 10.2.17 Fix up PCI configuration space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 10.2.18 Serial NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 10.2.19 Check SCSI BUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 10.2.20 Exclude a host from being attached
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 10.2.21 Suggest a default SCSI id for hosts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 10.2.22 Enable use of IMMEDIATE ARBITRATION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 10.3 Advised boot setup commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 10.4 PCI configuration fix-up boot option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 10.5 Serial NVRAM support boot option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 10.6 SCSI BUS checking boot option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 10.7 IMMEDIATE ARBITRATION boot option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 11. Some constants and flags of the ncr53c8xx.h header file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 12. Installation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 13. Architecture dependent features
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 14. Known problems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 14.1 Tagged commands with Iomega Jaz device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 14.2 Device names change when another controller is added
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 14.3 Using only 8 bit devices with a WIDE SCSI controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 14.4 Possible data corruption during a Memory Write and Invalidate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 14.5 IRQ sharing problems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 15. SCSI problem troubleshooting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 15.1 Problem tracking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 15.2 Understanding hardware error reports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 16. Synchronous transfer negotiation tables
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 16.1 Synchronous timings for 53C875 and 53C860 Ultra-SCSI controllers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 16.2 Synchronous timings for fast SCSI-2 53C8XX controllers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 17. Serial NVRAM support (by Richard Waltham)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 17.1 Features
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 17.2 Symbios NVRAM layout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) 17.3 Tekram NVRAM layout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) 18. Support for Big Endian
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) 18.1 Big Endian CPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) 18.2 NCR chip in Big Endian mode of operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) 1. Introduction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) ===============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) The initial Linux ncr53c8xx driver has been a port of the ncr driver from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) FreeBSD that has been achieved in November 1995 by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) - Gerard Roudier <groudier@free.fr>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) The original driver has been written for 386bsd and FreeBSD by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) - Wolfgang Stanglmeier <wolf@cologne.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) - Stefan Esser <se@mi.Uni-Koeln.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) It is now available as a bundle of 2 drivers:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) - ncr53c8xx generic driver that supports all the SYM53C8XX family including
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) the earliest 810 rev. 1, the latest 896 (2 channel LVD SCSI controller) and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) the new 895A (1 channel LVD SCSI controller).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) - sym53c8xx enhanced driver (a.k.a. 896 drivers) that drops support of oldest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) chips in order to gain advantage of new features, as LOAD/STORE instructions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) available since the 810A and hardware phase mismatch available with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 896 and the 895A.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) You can find technical information about the NCR 8xx family in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) PCI-HOWTO written by Michael Will and in the SCSI-HOWTO written by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) Drew Eckhardt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) Information about new chips is available at LSILOGIC web server:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) - http://www.lsilogic.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) SCSI standard documentations are available at SYMBIOS ftp server:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) - ftp://ftp.symbios.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) Useful SCSI tools written by Eric Youngdale are available at tsx-11:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) - ftp://tsx-11.mit.edu/pub/linux/ALPHA/scsi/scsiinfo-X.Y.tar.gz
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) - ftp://tsx-11.mit.edu/pub/linux/ALPHA/scsi/scsidev-X.Y.tar.gz
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) These tools are not ALPHA but quite clean and work quite well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) It is essential you have the 'scsiinfo' package.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) This short documentation describes the features of the generic and enhanced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) drivers, configuration parameters and control commands available through
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) the proc SCSI file system read / write operations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) This driver has been tested OK with linux/i386, Linux/Alpha and Linux/PPC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) Latest driver version and patches are available at:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) - ftp://ftp.tux.org/pub/people/gerard-roudier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) - ftp://ftp.symbios.com/mirror/ftp.tux.org/pub/tux/roudier/drivers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) I am not a native speaker of English and there are probably lots of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) mistakes in this README file. Any help will be welcome.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 2. Supported chips and SCSI features
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) ====================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) The following features are supported for all chips:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) - Synchronous negotiation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) - Disconnection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) - Tagged command queuing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) - SCSI parity checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) - Master parity checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) "Wide negotiation" is supported for chips that allow it. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) following table shows some characteristics of NCR 8xx family chips
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) and what drivers support them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) | | | | | |Supported by|Supported by|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) | |On board | | | |the generic |the enhanced|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) |Chip |SDMS BIOS |Wide |SCSI std. | Max. sync |driver |driver |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) |810 | N | N | FAST10 | 10 MB/s | Y | N |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) |810A | N | N | FAST10 | 10 MB/s | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) |815 | Y | N | FAST10 | 10 MB/s | Y | N |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) |825 | Y | Y | FAST10 | 20 MB/s | Y | N |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) |825A | Y | Y | FAST10 | 20 MB/s | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) |860 | N | N | FAST20 | 20 MB/s | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) |875 | Y | Y | FAST20 | 40 MB/s | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) |876 | Y | Y | FAST20 | 40 MB/s | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) |895 | Y | Y | FAST40 | 80 MB/s | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) |895A | Y | Y | FAST40 | 80 MB/s | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) |896 | Y | Y | FAST40 | 80 MB/s | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) |897 | Y | Y | FAST40 | 80 MB/s | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) |1510D | Y | Y | FAST40 | 80 MB/s | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) |1010 | Y | Y | FAST80 |160 MB/s | N | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) |1010_66 | Y | Y | FAST80 |160 MB/s | N | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) |[1]_ | | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) +--------+-----------+-----+-----------+------------+------------+------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) .. [1] Chip supports 33MHz and 66MHz PCI buses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) Summary of other supported features:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) :Module: allow to load the driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) :Memory mapped I/O: increases performance
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) :Profiling information: read operations from the proc SCSI file system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) :Control commands: write operations to the proc SCSI file system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) :Debugging information: written to syslog (expert only)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) :Serial NVRAM: Symbios and Tekram formats
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) - Scatter / gather
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) - Shared interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) - Boot setup commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 3. Advantages of the enhanced 896 driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) ========================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 3.1 Optimized SCSI SCRIPTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) --------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) The 810A, 825A, 875, 895, 896 and 895A support new SCSI SCRIPTS instructions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) named LOAD and STORE that allow to move up to 1 DWORD from/to an IO register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) to/from memory much faster that the MOVE MEMORY instruction that is supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) by the 53c7xx and 53c8xx family.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) The LOAD/STORE instructions support absolute and DSA relative addressing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) modes. The SCSI SCRIPTS had been entirely rewritten using LOAD/STORE instead
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) of MOVE MEMORY instructions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 3.2 New features of the SYM53C896 (64 bit PCI dual LVD SCSI controller)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) -----------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) The 896 and the 895A allows handling of the phase mismatch context from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) SCRIPTS (avoids the phase mismatch interrupt that stops the SCSI processor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) until the C code has saved the context of the transfer).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) Implementing this without using LOAD/STORE instructions would be painful
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) and I didn't even want to try it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) The 896 chip supports 64 bit PCI transactions and addressing, while the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 895A supports 32 bit PCI transactions and 64 bit addressing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) The SCRIPTS processor of these chips is not true 64 bit, but uses segment
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) registers for bit 32-63. Another interesting feature is that LOAD/STORE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) instructions that address the on-chip RAM (8k) remain internal to the chip.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) Due to the use of LOAD/STORE SCRIPTS instructions, this driver does not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) support the following chips:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) - SYM53C810 revision < 0x10 (16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) - SYM53C815 all revisions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) - SYM53C825 revision < 0x10 (16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 4. Memory mapped I/O versus normal I/O
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) ======================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) Memory mapped I/O has less latency than normal I/O. Since
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) linux-1.3.x, memory mapped I/O is used rather than normal I/O. Memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) mapped I/O seems to work fine on most hardware configurations, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) some poorly designed motherboards may break this feature.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) The configuration option CONFIG_SCSI_NCR53C8XX_IOMAPPED forces the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) driver to use normal I/O in all cases.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 5. Tagged command queueing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) ==========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) Queuing more than 1 command at a time to a device allows it to perform
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) optimizations based on actual head positions and its mechanical
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) characteristics. This feature may also reduce average command latency.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) In order to really gain advantage of this feature, devices must have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) a reasonable cache size (No miracle is to be expected for a low-end
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) hard disk with 128 KB or less).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) Some known SCSI devices do not properly support tagged command queuing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) Generally, firmware revisions that fix this kind of problems are available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) at respective vendor web/ftp sites.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) All I can say is that the hard disks I use on my machines behave well with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) this driver with tagged command queuing enabled:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) - IBM S12 0662
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) - Conner 1080S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) - Quantum Atlas I
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) - Quantum Atlas II
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) If your controller has NVRAM, you can configure this feature per target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) from the user setup tool. The Tekram Setup program allows to tune the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) maximum number of queued commands up to 32. The Symbios Setup only allows
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) to enable or disable this feature.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) The maximum number of simultaneous tagged commands queued to a device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) is currently set to 8 by default. This value is suitable for most SCSI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) disks. With large SCSI disks (>= 2GB, cache >= 512KB, average seek time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) <= 10 ms), using a larger value may give better performances.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) The sym53c8xx driver supports up to 255 commands per device, and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) generic ncr53c8xx driver supports up to 64, but using more than 32 is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) generally not worth-while, unless you are using a very large disk or disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) array. It is noticeable that most of recent hard disks seem not to accept
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) more than 64 simultaneous commands. So, using more than 64 queued commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) is probably just resource wasting.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) If your controller does not have NVRAM or if it is managed by the SDMS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) BIOS/SETUP, you can configure tagged queueing feature and device queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) depths from the boot command-line. For example::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) ncr53c8xx=tags:4/t2t3q15-t4q7/t1u0q32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) will set tagged commands queue depths as follow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) - target 2 all luns on controller 0 --> 15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) - target 3 all luns on controller 0 --> 15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) - target 4 all luns on controller 0 --> 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) - target 1 lun 0 on controller 1 --> 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) - all other target/lun --> 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) In some special conditions, some SCSI disk firmwares may return a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) QUEUE FULL status for a SCSI command. This behaviour is managed by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) driver using the following heuristic:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) - Each time a QUEUE FULL status is returned, tagged queue depth is reduced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) to the actual number of disconnected commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) - Every 1000 successfully completed SCSI commands, if allowed by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) current limit, the maximum number of queueable commands is incremented.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) Since QUEUE FULL status reception and handling is resource wasting, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) driver notifies by default this problem to user by indicating the actual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) number of commands used and their status, as well as its decision on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) device queue depth change.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) The heuristic used by the driver in handling QUEUE FULL ensures that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) impact on performances is not too bad. You can get rid of the messages by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) setting verbose level to zero, as follow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 1st method:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) boot your system using 'ncr53c8xx=verb:0' option.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 2nd method:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) apply "setverbose 0" control command to the proc fs entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) corresponding to your controller after boot-up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 6. Parity checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) ==================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) The driver supports SCSI parity checking and PCI bus master parity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) checking. These features must be enabled in order to ensure safe data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) transfers. However, some flawed devices or mother boards will have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) problems with parity. You can disable either PCI parity or SCSI parity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) checking by entering appropriate options from the boot command line.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) (See 10: Boot setup commands).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 7. Profiling information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) ========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) Profiling information is available through the proc SCSI file system.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) Since gathering profiling information may impact performances, this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) feature is disabled by default and requires a compilation configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) option to be set to Y.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) The device associated with a host has the following pathname::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) /proc/scsi/ncr53c8xx/N (N=0,1,2 ....)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) Generally, only 1 board is used on hardware configuration, and that device is::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) /proc/scsi/ncr53c8xx/0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) However, if the driver has been made as module, the number of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) hosts is incremented each time the driver is loaded.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) In order to display profiling information, just enter::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) cat /proc/scsi/ncr53c8xx/0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) and you will get something like the following text::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) General information:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) Chip NCR53C810, device id 0x1, revision id 0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) IO port address 0x6000, IRQ number 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) Using memory mapped IO at virtual address 0x282c000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) Synchronous transfer period 25, max commands per lun 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) Profiling information:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) num_trans = 18014
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) num_kbytes = 671314
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) num_disc = 25763
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) num_break = 1673
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) num_int = 1685
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) num_fly = 18038
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) ms_setup = 4940
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) ms_data = 369940
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) ms_disc = 183090
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) ms_post = 1320
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) General information is easy to understand. The device ID and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) revision ID identify the SCSI chip as follows:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) ======= ============= ===========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) Chip Device id Revision Id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) ======= ============= ===========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 810 0x1 < 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 810A 0x1 >= 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 815 0x4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 825 0x3 < 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 860 0x6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 825A 0x3 >= 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 875 0xf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 895 0xc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) ======= ============= ===========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) The profiling information is updated upon completion of SCSI commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) A data structure is allocated and zeroed when the host adapter is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) attached. So, if the driver is a module, the profile counters are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) cleared each time the driver is loaded. The "clearprof" command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) allows you to clear these counters at any time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) The following counters are available:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) ("num" prefix means "number of",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) "ms" means milli-seconds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) num_trans
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) Number of completed commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) Example above: 18014 completed commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) num_kbytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) Number of kbytes transferred
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) Example above: 671 MB transferred
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) num_disc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) Number of SCSI disconnections
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) Example above: 25763 SCSI disconnections
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) num_break
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) number of script interruptions (phase mismatch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) Example above: 1673 script interruptions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) num_int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) Number of interrupts other than "on the fly"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) Example above: 1685 interruptions not "on the fly"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) num_fly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) Number of interrupts "on the fly"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) Example above: 18038 interruptions "on the fly"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ms_setup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) Elapsed time for SCSI commands setups
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) Example above: 4.94 seconds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) ms_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) Elapsed time for data transfers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) Example above: 369.94 seconds spent for data transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) ms_disc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) Elapsed time for SCSI disconnections
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) Example above: 183.09 seconds spent disconnected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) ms_post
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) Elapsed time for command post processing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) (time from SCSI status get to command completion call)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) Example above: 1.32 seconds spent for post processing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) Due to the 1/100 second tick of the system clock, "ms_post" time may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) be wrong.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) In the example above, we got 18038 interrupts "on the fly" and only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 1673 script breaks generally due to disconnections inside a segment
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) of the scatter list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 8. Control commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) ===================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) Control commands can be sent to the driver with write operations to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) the proc SCSI file system. The generic command syntax is the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) following::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) echo "<verb> <parameters>" >/proc/scsi/ncr53c8xx/0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) (assumes controller number is 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) Using "all" for "<target>" parameter with the commands below will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) apply to all targets of the SCSI chain (except the controller).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) Available commands:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) 8.1 Set minimum synchronous period factor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) -----------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) setsync <target> <period factor>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) :target: target number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) :period: minimum synchronous period.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) Maximum speed = 1000/(4*period factor) except for special
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) cases below.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) Specify a period of 255, to force asynchronous transfer mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) - 10 means 25 nano-seconds synchronous period
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) - 11 means 30 nano-seconds synchronous period
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) - 12 means 50 nano-seconds synchronous period
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) 8.2 Set wide size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) -----------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) setwide <target> <size>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) :target: target number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) :size: 0=8 bits, 1=16bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) 8.3 Set maximum number of concurrent tagged commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) ----------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) settags <target> <tags>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) :target: target number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) :tags: number of concurrent tagged commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) must not be greater than SCSI_NCR_MAX_TAGS (default: 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) 8.4 Set order type for tagged command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) -------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) setorder <order>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) :order: 3 possible values:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) simple:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) use SIMPLE TAG for all operations (read and write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) ordered:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) use ORDERED TAG for all operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) use default tag type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) SIMPLE TAG for read operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) ORDERED TAG for write operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) 8.5 Set debug mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) ------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) setdebug <list of debug flags>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) Available debug flags:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) ======== ========================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) alloc print info about memory allocations (ccb, lcb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) queue print info about insertions into the command start queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) result print sense data on CHECK CONDITION status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) scatter print info about the scatter process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) scripts print info about the script binding process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) tiny print minimal debugging information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) timing print timing information of the NCR chip
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) nego print information about SCSI negotiations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) phase print information on script interruptions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) ======== ========================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) Use "setdebug" with no argument to reset debug flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) 8.6 Clear profile counters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) --------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) clearprof
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) The profile counters are automatically cleared when the amount of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) data transferred reaches 1000 GB in order to avoid overflow.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) The "clearprof" command allows you to clear these counters at any time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) 8.7 Set flag (no_disc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) ----------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) setflag <target> <flag>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) target: target number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) For the moment, only one flag is available:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) no_disc: not allow target to disconnect.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) Do not specify any flag in order to reset the flag. For example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) setflag 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) will reset no_disc flag for target 4, so will allow it disconnections.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) setflag all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) will allow disconnection for all devices on the SCSI bus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) 8.8 Set verbose level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) ---------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) setverbose #level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) The driver default verbose level is 1. This command allows to change
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) th driver verbose level after boot-up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) 8.9 Reset all logical units of a target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) ---------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) resetdev <target>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) :target: target number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) The driver will try to send a BUS DEVICE RESET message to the target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) (Only supported by the SYM53C8XX driver and provided for test purpose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) 8.10 Abort all tasks of all logical units of a target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) -----------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) cleardev <target>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) :target: target number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) The driver will try to send a ABORT message to all the logical units
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) of the target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) (Only supported by the SYM53C8XX driver and provided for test purpose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) 9. Configuration parameters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) ===========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) If the firmware of all your devices is perfect enough, all the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) features supported by the driver can be enabled at start-up. However,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) if only one has a flaw for some SCSI feature, you can disable the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) support by the driver of this feature at linux start-up and enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) this feature after boot-up only for devices that support it safely.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) CONFIG_SCSI_NCR53C8XX_IOMAPPED (default answer: n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) Answer "y" if you suspect your mother board to not allow memory mapped I/O.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) May slow down performance a little. This option is required by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) Linux/PPC and is used no matter what you select here. Linux/PPC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) suffers no performance loss with this option since all IO is memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) mapped anyway.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS (default answer: 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) Default tagged command queue depth.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) CONFIG_SCSI_NCR53C8XX_MAX_TAGS (default answer: 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) This option allows you to specify the maximum number of tagged commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) that can be queued to a device. The maximum supported value is 32.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) CONFIG_SCSI_NCR53C8XX_SYNC (default answer: 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) This option allows you to specify the frequency in MHz the driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) will use at boot time for synchronous data transfer negotiations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) This frequency can be changed later with the "setsync" control command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) 0 means "asynchronous data transfers".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) CONFIG_SCSI_NCR53C8XX_FORCE_SYNC_NEGO (default answer: n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) Force synchronous negotiation for all SCSI-2 devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) Some SCSI-2 devices do not report this feature in byte 7 of inquiry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) response but do support it properly (TAMARACK scanners for example).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) CONFIG_SCSI_NCR53C8XX_NO_DISCONNECT (default and only reasonable answer: n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) If you suspect a device of yours does not properly support disconnections,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) you can answer "y". Then, all SCSI devices will never disconnect the bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) even while performing long SCSI operations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) CONFIG_SCSI_NCR53C8XX_SYMBIOS_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) Genuine SYMBIOS boards use GPIO0 in output for controller LED and GPIO3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) bit as a flag indicating singled-ended/differential interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) If all the boards of your system are genuine SYMBIOS boards or use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) BIOS and drivers from SYMBIOS, you would want to enable this option.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) This option must NOT be enabled if your system has at least one 53C8XX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) based scsi board with a vendor-specific BIOS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) For example, Tekram DC-390/U, DC-390/W and DC-390/F scsi controllers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) use a vendor-specific BIOS and are known to not use SYMBIOS compatible
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) GPIO wiring. So, this option must not be enabled if your system has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) such a board installed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) CONFIG_SCSI_NCR53C8XX_NVRAM_DETECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) Enable support for reading the serial NVRAM data on Symbios and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) some Symbios compatible cards, and Tekram DC390W/U/F cards. Useful for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) systems with more than one Symbios compatible controller where at least
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) one has a serial NVRAM, or for a system with a mixture of Symbios and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) Tekram cards. Enables setting the boot order of host adaptors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) to something other than the default order or "reverse probe" order.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) Also enables Symbios and Tekram cards to be distinguished so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) CONFIG_SCSI_NCR53C8XX_SYMBIOS_COMPAT may be set in a system with a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) mixture of Symbios and Tekram cards so the Symbios cards can make use of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) the full range of Symbios features, differential, led pin, without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) causing problems for the Tekram card(s).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) 10. Boot setup commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) =======================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) 10.1 Syntax
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) -----------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) Setup commands can be passed to the driver either at boot time or as a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) string variable using 'insmod'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) A boot setup command for the ncr53c8xx (sym53c8xx) driver begins with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) driver name "ncr53c8xx="(sym53c8xx). The kernel syntax parser then expects
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) an optional list of integers separated with comma followed by an optional
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) list of comma-separated strings. Example of boot setup command under lilo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) prompt::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) lilo: linux root=/dev/hda2 ncr53c8xx=tags:4,sync:10,debug:0x200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) - enable tagged commands, up to 4 tagged commands queued.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) - set synchronous negotiation speed to 10 Mega-transfers / second.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) - set DEBUG_NEGO flag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) Since comma seems not to be allowed when defining a string variable using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) 'insmod', the driver also accepts <space> as option separator.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) The following command will install driver module with the same options as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) above::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) insmod ncr53c8xx.o ncr53c8xx="tags:4 sync:10 debug:0x200"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) For the moment, the integer list of arguments is discarded by the driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) It will be used in the future in order to allow a per controller setup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) Each string argument must be specified as "keyword:value". Only lower-case
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) characters and digits are allowed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) In a system that contains multiple 53C8xx adapters insmod will install the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) specified driver on each adapter. To exclude a chip use the 'excl' keyword.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) The sequence of commands::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) insmod sym53c8xx sym53c8xx=excl:0x1400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) insmod ncr53c8xx
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) installs the sym53c8xx driver on all adapters except the one at IO port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) address 0x1400 and then installs the ncr53c8xx driver to the adapter at IO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) port address 0x1400.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) 10.2 Available arguments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) ------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) 10.2.1 Master parity checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) ====== ========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) mpar:y enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) mpar:n disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) ====== ========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) 10.2.2 Scsi parity checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) ====== ========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) spar:y enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) spar:n disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) ====== ========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) 10.2.3 Scsi disconnections
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) ^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) ====== ========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) disc:y enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) disc:n disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) ====== ========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) 10.2.4 Special features
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) ^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) Only apply to 810A, 825A, 860, 875 and 895 controllers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) Have no effect with other ones.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) ======= =================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) specf:y (or 1) enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) specf:n (or 0) disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) specf:3 enabled except Memory Write And Invalidate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) ======= =================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) The default driver setup is 'specf:3'. As a consequence, option 'specf:y'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) must be specified in the boot setup command to enable Memory Write And
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) Invalidate.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) 10.2.5 Ultra SCSI support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) ^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) Only apply to 860, 875, 895, 895a, 896, 1010 and 1010_66 controllers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) Have no effect with other ones.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) ======= ========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) ultra:n All ultra speeds enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) ultra:2 Ultra2 enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) ultra:1 Ultra enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) ultra:0 Ultra speeds disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) ======= ========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) 10.2.6 Default number of tagged commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) ======================= ===============================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) tags:0 (or tags:1 ) tagged command queuing disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) tags:#tags (#tags > 1) tagged command queuing enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) ======================= ===============================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) #tags will be truncated to the max queued commands configuration parameter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) This option also allows to specify a command queue depth for each device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) that support tagged command queueing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) Example::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) ncr53c8xx=tags:10/t2t3q16-t5q24/t1u2q32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) will set devices queue depth as follow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) - controller #0 target #2 and target #3 -> 16 commands,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) - controller #0 target #5 -> 24 commands,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) - controller #1 target #1 logical unit #2 -> 32 commands,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) - all other logical units (all targets, all controllers) -> 10 commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) 10.2.7 Default synchronous period factor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) ============ ========================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) sync:255 disabled (asynchronous transfer mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) sync:#factor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) ============ =======================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) #factor = 10 Ultra-2 SCSI 40 Mega-transfers / second
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) #factor = 11 Ultra-2 SCSI 33 Mega-transfers / second
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) #factor < 25 Ultra SCSI 20 Mega-transfers / second
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) #factor < 50 Fast SCSI-2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) ============ =======================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) ============ ========================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) In all cases, the driver will use the minimum transfer period supported by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) controllers according to NCR53C8XX chip type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) 10.2.8 Negotiate synchronous with all devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) (force sync nego)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) ===== =========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) fsn:y enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) fsn:n disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) ===== =========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) 10.2.9 Verbosity level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) ^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) ====== =========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) verb:0 minimal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) verb:1 normal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) verb:2 too much
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) ====== =========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) 10.2.10 Debug mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) ^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) ======== ==================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) debug:0 clear debug flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) debug:#x set debug flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) #x is an integer value combining the following power-of-2 values:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) ============= ======
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) DEBUG_ALLOC 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) DEBUG_PHASE 0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) DEBUG_POLL 0x4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) DEBUG_QUEUE 0x8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) DEBUG_RESULT 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) DEBUG_SCATTER 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) DEBUG_SCRIPT 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) DEBUG_TINY 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) DEBUG_TIMING 0x100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) DEBUG_NEGO 0x200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) DEBUG_TAGS 0x400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) DEBUG_FREEZE 0x800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) DEBUG_RESTART 0x1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) ============= ======
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) ======== ==================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) You can play safely with DEBUG_NEGO. However, some of these flags may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) generate bunches of syslog messages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) 10.2.11 Burst max
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) ^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) ========= ==================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) burst:0 burst disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) burst:255 get burst length from initial IO register settings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) burst:#x burst enabled (1<<#x burst transfers max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) #x is an integer value which is log base 2 of the burst transfers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) max.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) The NCR53C875 and NCR53C825A support up to 128 burst transfers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) (#x = 7).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) Other chips only support up to 16 (#x = 4).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) This is a maximum value. The driver set the burst length according
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) to chip and revision ids. By default the driver uses the maximum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) value supported by the chip.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) ========= ==================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) 10.2.12 LED support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) ^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) ===== ===================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) led:1 enable LED support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) led:0 disable LED support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) ===== ===================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) Donnot enable LED support if your scsi board does not use SDMS BIOS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) (See 'Configuration parameters')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) 10.2.13 Max wide
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) ^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) ====== ===================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) wide:1 wide scsi enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) wide:0 wide scsi disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) ====== ===================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) Some scsi boards use a 875 (ultra wide) and only supply narrow connectors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) If you have connected a wide device with a 50 pins to 68 pins cable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) converter, any accepted wide negotiation will break further data transfers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) In such a case, using "wide:0" in the bootup command will be helpful.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) 10.2.14 Differential mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) ^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) ====== =================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) diff:0 never set up diff mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) diff:1 set up diff mode if BIOS set it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) diff:2 always set up diff mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) diff:3 set diff mode if GPIO3 is not set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) ====== =================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) 10.2.15 IRQ mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) ^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) ========= ========================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) irqm:0 always open drain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) irqm:1 same as initial settings (assumed BIOS settings)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) irqm:2 always totem pole
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) irqm:0x10 driver will not use IRQF_SHARED flag when requesting irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) ========= ========================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) (Bits 0x10 and 0x20 can be combined with hardware irq mode option)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) 10.2.16 Reverse probe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) ^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) ========= ========================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) revprob:n probe chip ids from the PCI configuration in this order:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) 810, 815, 820, 860, 875, 885, 895, 896
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) revprob:y probe chip ids in the reverse order.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) ========= ========================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) 10.2.17 Fix up PCI configuration space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) pcifix:<option bits>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) Available option bits:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) === ===============================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) 0x0 No attempt to fix PCI configuration space registers values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) 0x1 Set PCI cache-line size register if not set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) 0x2 Set write and invalidate bit in PCI command register.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) 0x4 Increase if necessary PCI latency timer according to burst max.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) === ===============================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) Use 'pcifix:7' in order to allow the driver to fix up all PCI features.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) 10.2.18 Serial NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) ^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) ======= =========================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) nvram:n do not look for serial NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) nvram:y test controllers for onboard serial NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) ======= =========================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) (alternate binary form)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) mvram=<bits options>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) ==== =================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) 0x01 look for NVRAM (equivalent to nvram=y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) 0x02 ignore NVRAM "Synchronous negotiation" parameters for all devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) 0x04 ignore NVRAM "Wide negotiation" parameter for all devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) 0x08 ignore NVRAM "Scan at boot time" parameter for all devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) 0x80 also attach controllers set to OFF in the NVRAM (sym53c8xx only)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) ==== =================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) 10.2.19 Check SCSI BUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) ^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) buschk:<option bits>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) Available option bits:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) ==== ================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) 0x0: No check.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) 0x1: Check and do not attach the controller on error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) 0x2: Check and just warn on error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) 0x4: Disable SCSI bus integrity checking.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) ==== ================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) 10.2.20 Exclude a host from being attached
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) excl=<io_address>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) Prevent host at a given io address from being attached.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) For example 'ncr53c8xx=excl:0xb400,excl:0xc000' indicate to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) ncr53c8xx driver not to attach hosts at address 0xb400 and 0xc000.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) 10.2.21 Suggest a default SCSI id for hosts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) ========== ==========================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) hostid:255 no id suggested.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) hostid:#x (0 < x < 7) x suggested for hosts SCSI id.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) ========== ==========================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) If a host SCSI id is available from the NVRAM, the driver will ignore
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) any value suggested as boot option. Otherwise, if a suggested value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) different from 255 has been supplied, it will use it. Otherwise, it will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) try to deduce the value previously set in the hardware and use value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) 7 if the hardware value is zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) 10.2.22 Enable use of IMMEDIATE ARBITRATION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) (only supported by the sym53c8xx driver. See 10.7 for more details)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) ======= =================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) iarb:0 do not use this feature.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) iarb:#x use this feature according to bit fields as follow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) ========= =======================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) bit 0 (1) enable IARB each time the initiator has been reselected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) when it arbitrated for the SCSI BUS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) (#x >> 4) maximum number of successive settings of IARB if the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) initiator win arbitration and it has other commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) to send to a device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) ========= =======================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) ======= =================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) Boot fail safe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) safe:y load the following assumed fail safe initial setup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) ======================== ====================== ==========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) master parity disabled mpar:n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) scsi parity enabled spar:y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) disconnections not allowed disc:n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) special features disabled specf:n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) ultra scsi disabled ultra:n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) force sync negotiation disabled fsn:n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) reverse probe disabled revprob:n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) PCI fix up disabled pcifix:0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) serial NVRAM enabled nvram:y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) verbosity level 2 verb:2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) tagged command queuing disabled tags:0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) synchronous negotiation disabled sync:255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) debug flags none debug:0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) burst length from BIOS settings burst:255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) LED support disabled led:0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) wide support disabled wide:0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) settle time 10 seconds settle:10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) differential support from BIOS settings diff:1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) irq mode from BIOS settings irqm:1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) SCSI BUS check do not attach on error buschk:1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) immediate arbitration disabled iarb:0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) ======================== ====================== ==========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) 10.3 Advised boot setup commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) If the driver has been configured with default options, the equivalent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) boot setup is::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) ncr53c8xx=mpar:y,spar:y,disc:y,specf:3,fsn:n,ultra:2,fsn:n,revprob:n,verb:1\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) tags:0,sync:50,debug:0,burst:7,led:0,wide:1,settle:2,diff:0,irqm:0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) For an installation diskette or a safe but not fast system,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) boot setup can be::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) ncr53c8xx=safe:y,mpar:y,disc:y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) ncr53c8xx=safe:y,disc:y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) ncr53c8xx=safe:y,mpar:y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) ncr53c8xx=safe:y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) My personal system works flawlessly with the following equivalent setup::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) ncr53c8xx=mpar:y,spar:y,disc:y,specf:1,fsn:n,ultra:2,fsn:n,revprob:n,verb:1\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) tags:32,sync:12,debug:0,burst:7,led:1,wide:1,settle:2,diff:0,irqm:0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) The driver prints its actual setup when verbosity level is 2. You can try
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) "ncr53c8xx=verb:2" to get the "static" setup of the driver, or add "verb:2"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) to your boot setup command in order to check the actual setup the driver is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) using.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) 10.4 PCI configuration fix-up boot option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) -----------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) pcifix:<option bits>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) Available option bits:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) === =====================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) 0x1 Set PCI cache-line size register if not set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) 0x2 Set write and invalidate bit in PCI command register.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) === =====================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) Use 'pcifix:3' in order to allow the driver to fix both PCI features.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) These options only apply to new SYMBIOS chips 810A, 825A, 860, 875
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) and 895 and are only supported for Pentium and 486 class processors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) Recent SYMBIOS 53C8XX scsi processors are able to use PCI read multiple
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) and PCI write and invalidate commands. These features require the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) cache line size register to be properly set in the PCI configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) space of the chips. On the other hand, chips will use PCI write and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) invalidate commands only if the corresponding bit is set to 1 in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) PCI command register.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) Not all PCI bioses set the PCI cache line register and the PCI write and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) invalidate bit in the PCI configuration space of 53C8XX chips.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) Optimized PCI accesses may be broken for some PCI/memory controllers or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) make problems with some PCI boards.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) This fix-up worked flawlessly on my previous system.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) (MB Triton HX / 53C875 / 53C810A)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) I use these options at my own risks as you will do if you decide to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) use them too.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) 10.5 Serial NVRAM support boot option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) -------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) ======= =========================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) nvram:n do not look for serial NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) nvram:y test controllers for onboard serial NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) ======= =========================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) This option can also been entered as an hexadecimal value that allows
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) to control what information the driver will get from the NVRAM and what
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) information it will ignore.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) For details see '17. Serial NVRAM support'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) When this option is enabled, the driver tries to detect all boards using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) a Serial NVRAM. This memory is used to hold user set up parameters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) The parameters the driver is able to get from the NVRAM depend on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) data format used, as follow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) | |Tekram format |Symbios format|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) |General and host parameters | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) | * Boot order | N | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) | * Host SCSI ID | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) | * SCSI parity checking | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) | * Verbose boot messages | N | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) |SCSI devices parameters |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) | * Synchronous transfer speed | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) | * Wide 16 / Narrow | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) | * Tagged Command Queuing | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) | enabled | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) | * Disconnections enabled | Y | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) | * Scan at boot time | N | Y |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) +-------------------------------+------------------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) In order to speed up the system boot, for each device configured without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) the "scan at boot time" option, the driver forces an error on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) first TEST UNIT READY command received for this device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) Some SDMS BIOS revisions seem to be unable to boot cleanly with very fast
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) hard disks. In such a situation you cannot configure the NVRAM with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) optimized parameters value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) The 'nvram' boot option can be entered in hexadecimal form in order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) to ignore some options configured in the NVRAM, as follow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) mvram=<bits options>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) ==== =================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) 0x01 look for NVRAM (equivalent to nvram=y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) 0x02 ignore NVRAM "Synchronous negotiation" parameters for all devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) 0x04 ignore NVRAM "Wide negotiation" parameter for all devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) 0x08 ignore NVRAM "Scan at boot time" parameter for all devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) 0x80 also attach controllers set to OFF in the NVRAM (sym53c8xx only)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) ==== =================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) Option 0x80 is only supported by the sym53c8xx driver and is disabled by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) default. Result is that, by default (option not set), the sym53c8xx driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) will not attach controllers set to OFF in the NVRAM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) The ncr53c8xx always tries to attach all the controllers. Option 0x80 has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) not been added to the ncr53c8xx driver, since it has been reported to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) confuse users who use this driver since a long time. If you desire a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) controller not to be attached by the ncr53c8xx driver at Linux boot, you
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) must use the 'excl' driver boot option.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) 10.6 SCSI BUS checking boot option.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) When this option is set to a non-zero value, the driver checks SCSI lines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) logic state, 100 micro-seconds after having asserted the SCSI RESET line.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) The driver just reads SCSI lines and checks all lines read FALSE except RESET.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) Since SCSI devices shall release the BUS at most 800 nano-seconds after SCSI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) RESET has been asserted, any signal to TRUE may indicate a SCSI BUS problem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) Unfortunately, the following common SCSI BUS problems are not detected:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) - Only 1 terminator installed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) - Misplaced terminators.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) - Bad quality terminators.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) On the other hand, either bad cabling, broken devices, not conformant
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) devices, ... may cause a SCSI signal to be wrong when te driver reads it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) 10.7 IMMEDIATE ARBITRATION boot option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) This option is only supported by the SYM53C8XX driver (not by the NCR53C8XX).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) SYMBIOS 53C8XX chips are able to arbitrate for the SCSI BUS as soon as they
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) have detected an expected disconnection (BUS FREE PHASE). For this process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) to be started, bit 1 of SCNTL1 IO register must be set when the chip is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) connected to the SCSI BUS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) When this feature has been enabled for the current connection, the chip has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) every chance to win arbitration if only devices with lower priority are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) competing for the SCSI BUS. By the way, when the chip is using SCSI id 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) then it will for sure win the next SCSI BUS arbitration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) Since, there is no way to know what devices are trying to arbitrate for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) BUS, using this feature can be extremely unfair. So, you are not advised
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) to enable it, or at most enable this feature for the case the chip lost
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) the previous arbitration (boot option 'iarb:1').
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) This feature has the following advantages:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) a) Allow the initiator with ID 7 to win arbitration when it wants so.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) b) Overlap at least 4 micro-seconds of arbitration time with the execution
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) of SCRIPTS that deal with the end of the current connection and that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) starts the next job.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) Hmmm... But (a) may just prevent other devices from reselecting the initiator,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) and delay data transfers or status/completions, and (b) may just waste
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) SCSI BUS bandwidth if the SCRIPTS execution lasts more than 4 micro-seconds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) The use of IARB needs the SCSI_NCR_IARB_SUPPORT option to have been defined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) at compile time and the 'iarb' boot option to have been set to a non zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) value at boot time. It is not that useful for real work, but can be used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) to stress SCSI devices or for some applications that can gain advantage of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) it. By the way, if you experience badnesses like 'unexpected disconnections',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) 'bad reselections', etc... when using IARB on heavy IO load, you should not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) be surprised, because force-feeding anything and blocking its arse at the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) same time cannot work for a long time. :-))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) 11. Some constants and flags of the ncr53c8xx.h header file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) ===========================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) Some of these are defined from the configuration parameters. To
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) change other "defines", you must edit the header file. Do that only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) if you know what you are doing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) SCSI_NCR_SETUP_SPECIAL_FEATURES (default: defined)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) If defined, the driver will enable some special features according
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) to chip and revision id.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) For 810A, 860, 825A, 875 and 895 scsi chips, this option enables
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) support of features that reduce load of PCI bus and memory accesses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) during scsi transfer processing: burst op-code fetch, read multiple,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) read line, prefetch, cache line, write and invalidate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) burst 128 (875 only), large dma fifo (875 only), offset 16 (875 only).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) Can be changed by the following boot setup command::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) ncr53c8xx=specf:n
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) SCSI_NCR_IOMAPPED (default: not defined)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) If defined, normal I/O is forced.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) SCSI_NCR_SHARE_IRQ (default: defined)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) If defined, request shared IRQ.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) SCSI_NCR_MAX_TAGS (default: 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) Maximum number of simultaneous tagged commands to a device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) Can be changed by "settags <target> <maxtags>"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) SCSI_NCR_SETUP_DEFAULT_SYNC (default: 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) Transfer period factor the driver will use at boot time for synchronous
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) negotiation. 0 means asynchronous.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) Can be changed by "setsync <target> <period factor>"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) SCSI_NCR_SETUP_DEFAULT_TAGS (default: 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) Default number of simultaneous tagged commands to a device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) < 1 means tagged command queuing disabled at start-up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) SCSI_NCR_ALWAYS_SIMPLE_TAG (default: defined)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) Use SIMPLE TAG for read and write commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) Can be changed by "setorder <ordered|simple|default>"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) SCSI_NCR_SETUP_DISCONNECTION (default: defined)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) If defined, targets are allowed to disconnect.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) SCSI_NCR_SETUP_FORCE_SYNC_NEGO (default: not defined)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) If defined, synchronous negotiation is tried for all SCSI-2 devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) Can be changed by "setsync <target> <period>"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) SCSI_NCR_SETUP_MASTER_PARITY (default: defined)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) If defined, master parity checking is enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) SCSI_NCR_SETUP_SCSI_PARITY (default: defined)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) If defined, SCSI parity checking is enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) SCSI_NCR_PROFILE_SUPPORT (default: not defined)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) If defined, profiling information is gathered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) SCSI_NCR_MAX_SCATTER (default: 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) Scatter list size of the driver ccb.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) SCSI_NCR_MAX_TARGET (default: 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) Max number of targets per host.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) SCSI_NCR_MAX_HOST (default: 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) Max number of host controllers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) SCSI_NCR_SETTLE_TIME (default: 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) Number of seconds the driver will wait after reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) SCSI_NCR_TIMEOUT_ALERT (default: 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) If a pending command will time out after this amount of seconds,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) an ordered tag is used for the next command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) Avoids timeouts for unordered tagged commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) SCSI_NCR_CAN_QUEUE (default: 7*SCSI_NCR_MAX_TAGS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) Max number of commands that can be queued to a host.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) SCSI_NCR_CMD_PER_LUN (default: SCSI_NCR_MAX_TAGS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) Max number of commands queued to a host for a device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) SCSI_NCR_SG_TABLESIZE (default: SCSI_NCR_MAX_SCATTER-1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) Max size of the Linux scatter/gather list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) SCSI_NCR_MAX_LUN (default: 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) Max number of LUNs per target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) 12. Installation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) ================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) This driver is part of the linux kernel distribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) Driver files are located in the sub-directory "drivers/scsi" of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) kernel source tree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) Driver files::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) README.ncr53c8xx : this file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) ChangeLog.ncr53c8xx : change log
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) ncr53c8xx.h : definitions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) ncr53c8xx.c : the driver code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) New driver versions are made available separately in order to allow testing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) changes and new features prior to including them into the linux kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) distribution. The following URL provides information on latest available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) patches:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) ftp://ftp.tux.org/pub/people/gerard-roudier/README
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) 13. Architecture dependent features
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) ===================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) <Not yet written>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) 14. Known problems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) ==================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) 14.1 Tagged commands with Iomega Jaz device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) -------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) I have not tried this device, however it has been reported to me the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) following: This device is capable of Tagged command queuing. However
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) while spinning up, it rejects Tagged commands. This behaviour is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) conforms to 6.8.2 of SCSI-2 specifications. The current behaviour of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) the driver in that situation is not satisfying. So do not enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) Tagged command queuing for devices that are able to spin down. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) other problem that may appear is timeouts. The only way to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) timeouts seems to edit linux/drivers/scsi/sd.c and to increase the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) current timeout values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) 14.2 Device names change when another controller is added
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) ---------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) When you add a new NCR53C8XX chip based controller to a system that already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) has one or more controllers of this family, it may happen that the order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) the driver registers them to the kernel causes problems due to device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) name changes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) When at least one controller uses NvRAM, SDMS BIOS version 4 allows you to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) define the order the BIOS will scan the scsi boards. The driver attaches
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) controllers according to BIOS information if NvRAM detect option is set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) If your controllers do not have NvRAM, you can:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) - Ask the driver to probe chip ids in reverse order from the boot command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) line: ncr53c8xx=revprob:y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) - Make appropriate changes in the fstab.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) - Use the 'scsidev' tool from Eric Youngdale.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) 14.3 Using only 8 bit devices with a WIDE SCSI controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) ---------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) When only 8 bit NARROW devices are connected to a 16 bit WIDE SCSI controller,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) you must ensure that lines of the wide part of the SCSI BUS are pulled-up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) This can be achieved by ENABLING the WIDE TERMINATOR portion of the SCSI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) controller card.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) The TYAN 1365 documentation revision 1.2 is not correct about such settings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) (page 10, figure 3.3).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) 14.4 Possible data corruption during a Memory Write and Invalidate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) ------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) This problem is described in SYMBIOS DEL 397, Part Number 69-039241, ITEM 4.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) In some complex situations, 53C875 chips revision <= 3 may start a PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) Write and Invalidate Command at a not cache-line-aligned 4 DWORDS boundary.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) This is only possible when Cache Line Size is 8 DWORDS or greater.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) Pentium systems use a 8 DWORDS cache line size and so are concerned by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) this chip bug, unlike i486 systems that use a 4 DWORDS cache line size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) When this situation occurs, the chip may complete the Write and Invalidate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) command after having only filled part of the last cache line involved in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) the transfer, leaving to data corruption the remainder of this cache line.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) Not using Write And Invalidate obviously gets rid of this chip bug, and so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) it is now the default setting of the driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) However, for people like me who want to enable this feature, I have added
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) part of a work-around suggested by SYMBIOS. This work-around resets the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) addressing logic when the DATA IN phase is entered and so prevents the bug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) from being triggered for the first SCSI MOVE of the phase. This work-around
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) should be enough according to the following:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) The only driver internal data structure that is greater than 8 DWORDS and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) that is moved by the SCRIPTS processor is the 'CCB header' that contains
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) the context of the SCSI transfer. This data structure is aligned on 8 DWORDS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) boundary (Pentium Cache Line Size), and so is immune to this chip bug, at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) least on Pentium systems.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) But the conditions of this bug can be met when a SCSI read command is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) performed using a buffer that is 4 DWORDS but not cache-line aligned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) This cannot happen under Linux when scatter/gather lists are used since
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) they only refer to system buffers that are well aligned. So, a work around
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) may only be needed under Linux when a scatter/gather list is not used and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) when the SCSI DATA IN phase is reentered after a phase mismatch.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) 15. SCSI problem troubleshooting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) ================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) 15.1 Problem tracking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) ---------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) Most SCSI problems are due to a non conformant SCSI bus or to buggy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) devices. If unfortunately you have SCSI problems, you can check the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) following things:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) - SCSI bus cables
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) - terminations at both end of the SCSI chain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) - linux syslog messages (some of them may help you)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) If you do not find the source of problems, you can configure the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) driver with no features enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) - only asynchronous data transfers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) - tagged commands disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) - disconnections not allowed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) Now, if your SCSI bus is ok, your system have every chance to work
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) with this safe configuration but performances will not be optimal.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) If it still fails, then you can send your problem description to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) appropriate mailing lists or news-groups. Send me a copy in order to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) be sure I will receive it. Obviously, a bug in the driver code is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) possible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) My email address: Gerard Roudier <groudier@free.fr>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) Allowing disconnections is important if you use several devices on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) your SCSI bus but often causes problems with buggy devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) Synchronous data transfers increases throughput of fast devices like
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) hard disks. Good SCSI hard disks with a large cache gain advantage of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) tagged commands queuing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) Try to enable one feature at a time with control commands. For example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) ::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) echo "setsync all 25" >/proc/scsi/ncr53c8xx/0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) Will enable fast synchronous data transfer negotiation for all targets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) ::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) echo "setflag 3" >/proc/scsi/ncr53c8xx/0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) Will reset flags (no_disc) for target 3, and so will allow it to disconnect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) the SCSI Bus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) ::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) echo "settags 3 8" >/proc/scsi/ncr53c8xx/0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) Will enable tagged command queuing for target 3 if that device supports it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) Once you have found the device and the feature that cause problems, just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) disable that feature for that device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) 15.2 Understanding hardware error reports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) -----------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) When the driver detects an unexpected error condition, it may display a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) message of the following pattern::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) sym53c876-0:1: ERROR (0:48) (1-21-65) (f/95) @ (script 7c0:19000000).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) sym53c876-0: script cmd = 19000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) sym53c876-0: regdump: da 10 80 95 47 0f 01 07 75 01 81 21 80 01 09 00.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) Some fields in such a message may help you understand the cause of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) problem, as follows::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) sym53c876-0:1: ERROR (0:48) (1-21-65) (f/95) @ (script 7c0:19000000).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) ............A.........B.C....D.E..F....G.H.......I.....J...K.......
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) Field A : target number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) SCSI ID of the device the controller was talking with at the moment the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) error occurs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) Field B : DSTAT io register (DMA STATUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) ======== =============================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) Bit 0x40 MDPE Master Data Parity Error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) Data parity error detected on the PCI BUS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) Bit 0x20 BF Bus Fault
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) PCI bus fault condition detected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) Bit 0x01 IID Illegal Instruction Detected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) Set by the chip when it detects an Illegal Instruction format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) on some condition that makes an instruction illegal.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) Bit 0x80 DFE Dma Fifo Empty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) Pure status bit that does not indicate an error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) ======== =============================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) If the reported DSTAT value contains a combination of MDPE (0x40),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) BF (0x20), then the cause may be likely due to a PCI BUS problem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) Field C : SIST io register (SCSI Interrupt Status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) ======== ==================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) Bit 0x08 SGE SCSI GROSS ERROR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) Indicates that the chip detected a severe error condition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) on the SCSI BUS that prevents the SCSI protocol from functioning
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) properly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) Bit 0x04 UDC Unexpected Disconnection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) Indicates that the device released the SCSI BUS when the chip
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) was not expecting this to happen. A device may behave so to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) indicate the SCSI initiator that an error condition not reportable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) using the SCSI protocol has occurred.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) Bit 0x02 RST SCSI BUS Reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) Generally SCSI targets do not reset the SCSI BUS, although any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) device on the BUS can reset it at any time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) Bit 0x01 PAR Parity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) SCSI parity error detected.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) ======== ==================================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) On a faulty SCSI BUS, any error condition among SGE (0x08), UDC (0x04) and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) PAR (0x01) may be detected by the chip. If your SCSI system sometimes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) encounters such error conditions, especially SCSI GROSS ERROR, then a SCSI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) BUS problem is likely the cause of these errors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) For fields D,E,F,G and H, you may look into the sym53c8xx_defs.h file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) that contains some minimal comments on IO register bits.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) Field D : SOCL Scsi Output Control Latch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) This register reflects the state of the SCSI control lines the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) chip want to drive or compare against.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) Field E : SBCL Scsi Bus Control Lines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) Actual value of control lines on the SCSI BUS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) Field F : SBDL Scsi Bus Data Lines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) Actual value of data lines on the SCSI BUS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) Field G : SXFER SCSI Transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) Contains the setting of the Synchronous Period for output and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) the current Synchronous offset (offset 0 means asynchronous).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) Field H : SCNTL3 Scsi Control Register 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) Contains the setting of timing values for both asynchronous and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) synchronous data transfers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) Understanding Fields I, J, K and dumps requires to have good knowledge of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) SCSI standards, chip cores functionnals and internal driver data structures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) You are not required to decode and understand them, unless you want to help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) maintain the driver code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) 16. Synchronous transfer negotiation tables
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) ===========================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) Tables below have been created by calling the routine the driver uses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) for synchronisation negotiation timing calculation and chip setting.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) The first table corresponds to Ultra chips 53875 and 53C860 with 80 MHz
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) clock and 5 clock divisors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) The second one has been calculated by setting the scsi clock to 40 Mhz
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) and using 4 clock divisors and so applies to all NCR53C8XX chips in fast
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) SCSI-2 mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) Periods are in nano-seconds and speeds are in Mega-transfers per second.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) 1 Mega-transfers/second means 1 MB/s with 8 bits SCSI and 2 MB/s with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) Wide16 SCSI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) 16.1 Synchronous timings for 53C895, 53C875 and 53C860 SCSI controllers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) +-----------------------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) |Negotiated |NCR settings | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) +-------+--------+------------+--------+-------+ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) |Factor |Period |Speed |Period |Speed | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) |10 | 25 |40.000 | 25 |40.000 | (53C895 only)|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) |11 | 30.2 |33.112 | 31.25 |32.000 | (53C895 only)|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) |12 | 50 |20.000 | 50 |20.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) |13 | 52 |19.230 | 62 |16.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) |14 | 56 |17.857 | 62 |16.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) |15 | 60 |16.666 | 62 |16.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) |16 | 64 |15.625 | 75 |13.333 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) |17 | 68 |14.705 | 75 |13.333 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) |18 | 72 |13.888 | 75 |13.333 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) |19 | 76 |13.157 | 87 |11.428 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) |20 | 80 |12.500 | 87 |11.428 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) |21 | 84 |11.904 | 87 |11.428 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) |22 | 88 |11.363 | 93 |10.666 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) |23 | 92 |10.869 | 93 |10.666 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) |24 | 96 |10.416 |100 |10.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) |25 |100 |10.000 |100 |10.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) |26 |104 | 9.615 |112 | 8.888 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) |27 |108 | 9.259 |112 | 8.888 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) |28 |112 | 8.928 |112 | 8.888 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) |29 |116 | 8.620 |125 | 8.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) |30 |120 | 8.333 |125 | 8.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) |31 |124 | 8.064 |125 | 8.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) |32 |128 | 7.812 |131 | 7.619 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) |33 |132 | 7.575 |150 | 6.666 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) |34 |136 | 7.352 |150 | 6.666 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) |35 |140 | 7.142 |150 | 6.666 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) |36 |144 | 6.944 |150 | 6.666 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) |37 |148 | 6.756 |150 | 6.666 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) |38 |152 | 6.578 |175 | 5.714 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) |39 |156 | 6.410 |175 | 5.714 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) |40 |160 | 6.250 |175 | 5.714 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) |41 |164 | 6.097 |175 | 5.714 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) |42 |168 | 5.952 |175 | 5.714 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) |43 |172 | 5.813 |175 | 5.714 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) |44 |176 | 5.681 |187 | 5.333 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) |45 |180 | 5.555 |187 | 5.333 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) |46 |184 | 5.434 |187 | 5.333 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) |47 |188 | 5.319 |200 | 5.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) |48 |192 | 5.208 |200 | 5.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) |49 |196 | 5.102 |200 | 5.000 | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) +-------+--------+------------+--------+-------+--------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) 16.2 Synchronous timings for fast SCSI-2 53C8XX controllers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) +-----------------------------+----------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) |Negotiated |NCR settings |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) |Factor |Period |Speed |Period |Speed |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) |25 |100 |10.000 |100 |10.000 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) |26 |104 |9.615 |125 | 8.000 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) |27 |108 |9.259 |125 | 8.000 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) |28 |112 |8.928 |125 | 8.000 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) |29 |116 |8.620 |125 | 8.000 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) |30 |120 |8.333 |125 | 8.000 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) |31 |124 |8.064 |125 | 8.000 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) |32 |128 |7.812 |131 | 7.619 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) |33 |132 |7.575 |150 | 6.666 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) |34 |136 |7.352 |150 | 6.666 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) |35 |140 |7.142 |150 | 6.666 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) |36 |144 |6.944 |150 | 6.666 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) |37 |148 |6.756 |150 | 6.666 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) |38 |152 |6.578 |175 | 5.714 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) |39 |156 |6.410 |175 | 5.714 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) |40 |160 |6.250 |175 | 5.714 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) |41 |164 |6.097 |175 | 5.714 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) |42 |168 |5.952 |175 | 5.714 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) |43 |172 |5.813 |175 | 5.714 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) |44 |176 |5.681 |187 | 5.333 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) |45 |180 |5.555 |187 | 5.333 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) |46 |184 |5.434 |187 | 5.333 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) |47 |188 |5.319 |200 | 5.000 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) |48 |192 |5.208 |200 | 5.000 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) |49 |196 |5.102 |200 | 5.000 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) +-------+--------+------------+--------+-------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) 17. Serial NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) ================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) (added by Richard Waltham: dormouse@farsrobt.demon.co.uk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) 17.1 Features
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) -------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) Enabling serial NVRAM support enables detection of the serial NVRAM included
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) on Symbios and some Symbios compatible host adaptors, and Tekram boards. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) serial NVRAM is used by Symbios and Tekram to hold set up parameters for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) host adaptor and its attached drives.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) The Symbios NVRAM also holds data on the boot order of host adaptors in a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) system with more than one host adaptor. This enables the order of scanning
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) the cards for drives to be changed from the default used during host adaptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) detection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) This can be done to a limited extent at the moment using "reverse probe" but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) this only changes the order of detection of different types of cards. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) NVRAM boot order settings can do this as well as change the order the same
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) types of cards are scanned in, something "reverse probe" cannot do.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) Tekram boards using Symbios chips, DC390W/F/U, which have NVRAM are detected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) and this is used to distinguish between Symbios compatible and Tekram host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) adaptors. This is used to disable the Symbios compatible "diff" setting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) incorrectly set on Tekram boards if the CONFIG_SCSI_53C8XX_SYMBIOS_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) configuration parameter is set enabling both Symbios and Tekram boards to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) used together with the Symbios cards using all their features, including
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) "diff" support. ("led pin" support for Symbios compatible cards can remain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) enabled when using Tekram cards. It does nothing useful for Tekram host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) adaptors but does not cause problems either.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) 17.2 Symbios NVRAM layout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) -------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) typical data at NVRAM address 0x100 (53c810a NVRAM)::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) 64 01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) 8e 0b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) 00 30 00 00 00 00 07 00 00 00 00 00 00 00 07 04 10 04 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) 04 00 0f 00 00 10 00 50 00 00 01 00 00 62
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) 04 00 03 00 00 10 00 58 00 00 01 00 00 63
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) 04 00 01 00 00 10 00 48 00 00 01 00 00 61
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) 00 00 00 00 00 00 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) fe fe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) NVRAM layout details
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) ============= ================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) NVRAM Address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) ============= ================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) 0x000-0x0ff not used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) 0x100-0x26f initialised data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) 0x270-0x7ff not used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) ============= ================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) general layout::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) header - 6 bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) data - 356 bytes (checksum is byte sum of this data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) trailer - 6 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) ---
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) total 368 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) data area layout::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) controller set up - 20 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) boot configuration - 56 bytes (4x14 bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) device set up - 128 bytes (16x8 bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) unused (spare?) - 152 bytes (19x8 bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) ---
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) total 356 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) header::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) 00 00 - ?? start marker
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) 64 01 - byte count (lsb/msb excludes header/trailer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) 8e 0b - checksum (lsb/msb excludes header/trailer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) controller set up::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) 00 30 00 00 00 00 07 00 00 00 00 00 00 00 07 04 10 04 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) | | | -- host ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) | | --Removable Media Support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) | | 0x00 = none
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) | | 0x01 = Bootable Device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) | | 0x02 = All with Media
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) | --flag bits 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) | 0x00000001= scan order hi->low
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) | (default 0x00 - scan low->hi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) --flag bits 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) 0x00000001 scam enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) 0x00000010 parity enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) 0x00000100 verbose boot msgs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) remaining bytes unknown - they do not appear to change in my
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) current set up for any of the controllers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) default set up is identical for 53c810a and 53c875 NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) (Removable Media added Symbios BIOS version 4.09)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) boot configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) boot order set by order of the devices in this table::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) 04 00 0f 00 00 10 00 50 00 00 01 00 00 62 -- 1st controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) 04 00 03 00 00 10 00 58 00 00 01 00 00 63 2nd controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) 04 00 01 00 00 10 00 48 00 00 01 00 00 61 3rd controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) 00 00 00 00 00 00 00 00 00 00 00 00 00 00 4th controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) | | | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) | | | | | | ---- PCI io port adr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) | | | | | --0x01 init/scan at boot time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) | | | | --PCI device/function number (0xdddddfff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) | | ----- ?? PCI vendor ID (lsb/msb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) ----PCI device ID (lsb/msb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) ?? use of this data is a guess but seems reasonable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) remaining bytes unknown - they do not appear to change in my
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) current set up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) default set up is identical for 53c810a and 53c875 NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) --------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) device set up (up to 16 devices - includes controller)::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) 0f 00 08 08 64 00 0a 00 - id 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) 0f 00 08 08 64 00 0a 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) 0f 00 08 08 64 00 0a 00 - id 15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) | | | | ----timeout (lsb/msb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) | | | --synch period (0x?? 40 Mtrans/sec- fast 40) (probably 0x28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) | | | (0x30 20 Mtrans/sec- fast 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) | | | (0x64 10 Mtrans/sec- fast )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) | | | (0xc8 5 Mtrans/sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) | | | (0x00 asynchronous)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) | | -- ?? max sync offset (0x08 in NVRAM on 53c810a)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) | | (0x10 in NVRAM on 53c875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) | --device bus width (0x08 narrow)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) | (0x10 16 bit wide)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) --flag bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) 0x00000001 - disconnect enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) 0x00000010 - scan at boot time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) 0x00000100 - scan luns
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) 0x00001000 - queue tags enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) remaining bytes unknown - they do not appear to change in my
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) current set up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) ?? use of this data is a guess but seems reasonable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) (but it could be max bus width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) default set up for 53c810a NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) default set up for 53c875 NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) - bus width - 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) - sync offset ? - 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) - sync period - 0x30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) ?? spare device space (32 bit bus ??)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) ::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) 00 00 00 00 00 00 00 00 (19x8bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) .
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) .
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) 00 00 00 00 00 00 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) default set up is identical for 53c810a and 53c875 NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) --------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) trailer::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) fe fe - ? end marker ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) 00 00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) default set up is identical for 53c810a and 53c875 NVRAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) -----------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) 17.3 Tekram NVRAM layout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) ------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) nvram 64x16 (1024 bit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) Drive settings::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) Drive ID 0-15 (addr 0x0yyyy0 = device setup, yyyy = ID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) (addr 0x0yyyy1 = 0x0000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) x x x x x x x x x x x x x x x x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) | | | | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) | | | | | | | | ----- parity check 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) | | | | | | | | 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) | | | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) | | | | | | | ------- sync neg 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) | | | | | | | 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) | | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) | | | | | | --------- disconnect 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) | | | | | | 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) | | | | | ----------- start cmd 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) | | | | | 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) | | | | -------------- tagged cmds 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) | | | | 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) | | | ---------------- wide neg 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) | | | 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) --------------------------- sync rate 0 - 10.0 Mtrans/sec
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) 1 - 8.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) 2 - 6.6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) 3 - 5.7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) 4 - 5.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) 5 - 4.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) 6 - 3.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) 7 - 2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) 7 - 2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) 8 - 20.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) 9 - 16.7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) a - 13.9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) b - 11.9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) Global settings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) Host flags 0 (addr 0x100000, 32)::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) x x x x x x x x x x x x x x x x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) | | | | | | | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) | | | | | | | | ----------- host ID 0x00 - 0x0f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) | | | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) | | | | | | | ----------------------- support for 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) | | | | | | | > 2 drives 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) | | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) | | | | | | ------------------------- support drives 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) | | | | | | > 1Gbytes 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) | | | | | --------------------------- bus reset on 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) | | | | | power on 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) | | | | ----------------------------- active neg 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) | | | | 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) | | | -------------------------------- imm seek 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) | | | 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) | | ---------------------------------- scan luns 0 - off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) | | 1 - on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) -------------------------------------- removable 0 - disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) as BIOS dev 1 - boot device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) 2 - all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) Host flags 1 (addr 0x100001, 33)::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) x x x x x x x x x x x x x x x x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) | | | | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) | | | --------- boot delay 0 - 3 sec
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) | | | 1 - 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) | | | 2 - 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) | | | 3 - 20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) | | | 4 - 30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) | | | 5 - 60
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) | | | 6 - 120
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) --------------------------- max tag cmds 0 - 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) 1 - 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) 2 - 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) 3 - 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) 4 - 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) Host flags 2 (addr 0x100010, 34)::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) x x x x x x x x x x x x x x x x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) ----- F2/F6 enable 0 - off ???
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) 1 - on ???
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) checksum (addr 0x111111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) checksum = 0x1234 - (sum addr 0-63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) ----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) default nvram data::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) 0x0037 0x0000 0x0037 0x0000 0x0037 0x0000 0x0037 0x0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) 0x0037 0x0000 0x0037 0x0000 0x0037 0x0000 0x0037 0x0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136) 0x0037 0x0000 0x0037 0x0000 0x0037 0x0000 0x0037 0x0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) 0x0037 0x0000 0x0037 0x0000 0x0037 0x0000 0x0037 0x0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) 0x0f07 0x0400 0x0001 0x0000 0x0000 0x0000 0x0000 0x0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140) 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0xfbbc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145) 18. Support for Big Endian
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) ==========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) The PCI local bus has been primarily designed for x86 architecture.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) As a consequence, PCI devices generally expect DWORDS using little endian
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) byte ordering.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) 18.1 Big Endian CPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) -------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155) In order to support NCR chips on a Big Endian architecture the driver has to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) perform byte reordering each time it is needed. This feature has been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157) added to the driver by Cort <cort@cs.nmt.edu> and is available in driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) version 2.5 and later ones. For the moment Big Endian support has only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) been tested on Linux/PPC (PowerPC).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) 18.2 NCR chip in Big Endian mode of operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162) ----------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) It can be read in SYMBIOS documentation that some chips support a special
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165) Big Endian mode, on paper: 53C815, 53C825A, 53C875, 53C875N, 53C895.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166) This mode of operations is not software-selectable, but needs pin named
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) BigLit to be pulled-up. Using this mode, most of byte reorderings should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) be avoided when the driver is running on a Big Endian CPU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169) Driver version 2.5 is also, in theory, ready for this feature.
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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