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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
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Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.. SPDX-License-Identifier: GPL-2.0
+
+======================================
+README file for the dc395x SCSI driver
+======================================
+
+Status
+------
+The driver has been tested with CD-R and CD-R/W drives. These should
+be safe to use. Testing with hard disks has not been done to any
+great degree and caution should be exercised if you want to attempt
+to use this driver with hard disks.
+
+This is a 2.5 only driver. For a 2.4 driver please see the original
+driver (which this driver started from) at
+http://www.garloff.de/kurt/linux/dc395/
+
+Problems, questions and patches should be submitted to the mailing
+list. Details on the list, including archives, are available at
+http://lists.twibble.org/mailman/listinfo/dc395x/
+
+Parameters
+----------
+The driver uses the settings from the EEPROM set in the SCSI BIOS
+setup. If there is no EEPROM, the driver uses default values.
+Both can be overridden by command line parameters (module or kernel
+parameters).
+
+The following parameters are available:
+
+safe
+ Default: 0, Acceptable values: 0 or 1
+
+ If safe is set to 1 then the adapter will use conservative
+ ("safe") default settings. This sets:
+
+ shortcut for dc395x=7,4,9,15,2,10
+
+adapter_id
+ Default: 7, Acceptable values: 0 to 15
+
+ Sets the host adapter SCSI ID.
+
+max_speed
+ Default: 1, Acceptable value: 0 to 7
+
+ == ========
+ 0 20 Mhz
+ 1 12.2 Mhz
+ 2 10 Mhz
+ 3 8 Mhz
+ 4 6.7 Mhz
+ 5 5.8 Hhz
+ 6 5 Mhz
+ 7 4 Mhz
+ == ========
+
+dev_mode
+ Bitmap for device configuration
+
+ DevMode bit definition:
+
+ === ======== ======== =========================================
+ Bit Val(hex) Val(dec) Meaning
+ === ======== ======== =========================================
+ 0 0x01 1 Parity check
+ 1 0x02 2 Synchronous Negotiation
+ 2 0x04 4 Disconnection
+ 3 0x08 8 Send Start command on startup. (Not used)
+ 4 0x10 16 Tagged Command Queueing
+ 5 0x20 32 Wide Negotiation
+ === ======== ======== =========================================
+
+adapter_mode
+ Bitmap for adapter configuration
+
+ AdaptMode bit definition
+
+ ===== ======== ======== ====================================================
+ Bit Val(hex) Val(dec) Meaning
+ ===== ======== ======== ====================================================
+ 0 0x01 1 Support more than two drives. (Not used)
+ 1 0x02 2 Use DOS compatible mapping for HDs greater than 1GB.
+ 2 0x04 4 Reset SCSI Bus on startup.
+ 3 0x08 8 Active Negation: Improves SCSI Bus noise immunity.
+ 4 0x10 16 Immediate return on BIOS seek command. (Not used)
+ (*)5 0x20 32 Check for LUNs >= 1.
+ ===== ======== ======== ====================================================
+
+tags
+ Default: 3, Acceptable values: 0-5
+
+ The number of tags is 1<<x, if x has been specified
+
+reset_delay
+ Default: 1, Acceptable values: 0-180
+
+ The seconds to not accept commands after a SCSI Reset
+
+
+For the built in driver the parameters should be prefixed with
+dc395x. (eg "dc395x.safe=1")
+
+
+Copyright
+---------
+The driver is free software. It is protected by the GNU General Public
+License (GPL). Please read it, before using this driver. It should be
+included in your kernel sources and with your distribution. It carries the
+filename COPYING. If you don't have it, please ask me to send you one by
+email.
+
+Note: The GNU GPL says also something about warranty and liability.
+Please be aware the following: While we do my best to provide a working and
+reliable driver, there is a chance, that it will kill your valuable data.
+We refuse to take any responsibility for that. The driver is provided as-is
+and YOU USE IT AT YOUR OWN RESPONSIBILITY.