115 lines · plain
1.. SPDX-License-Identifier: GPL-2.02 3==================4dc395x SCSI driver5==================6 7Status8------9The driver has been tested with CD-R and CD-R/W drives. These should10be safe to use. Testing with hard disks has not been done to any11great degree and caution should be exercised if you want to attempt12to use this driver with hard disks.13 14This driver is evolved from `the original 2.4 driver15<https://web.archive.org/web/20140129181343/http://www.garloff.de/kurt/linux/dc395/>`_.16Problems, questions and patches should be submitted to the `Linux SCSI17mailing list <linux-scsi@vger.kernel.org>`_.18 19Parameters20----------21The driver uses the settings from the EEPROM set in the SCSI BIOS22setup. If there is no EEPROM, the driver uses default values.23Both can be overridden by command line parameters (module or kernel24parameters).25 26The following parameters are available:27 28safe29 Default: 0, Acceptable values: 0 or 130 31 If safe is set to 1 then the adapter will use conservative32 ("safe") default settings. This sets:33 34 shortcut for dc395x=7,4,9,15,2,1035 36adapter_id37 Default: 7, Acceptable values: 0 to 1538 39 Sets the host adapter SCSI ID.40 41max_speed42 Default: 1, Acceptable value: 0 to 743 44 == ========45 0 20 Mhz46 1 12.2 Mhz47 2 10 Mhz48 3 8 Mhz49 4 6.7 Mhz50 5 5.8 Hhz51 6 5 Mhz52 7 4 Mhz53 == ========54 55dev_mode56 Bitmap for device configuration57 58 DevMode bit definition:59 60 === ======== ======== =========================================61 Bit Val(hex) Val(dec) Meaning62 === ======== ======== =========================================63 0 0x01 1 Parity check64 1 0x02 2 Synchronous Negotiation65 2 0x04 4 Disconnection66 3 0x08 8 Send Start command on startup. (Not used)67 4 0x10 16 Tagged Command Queueing68 5 0x20 32 Wide Negotiation69 === ======== ======== =========================================70 71adapter_mode72 Bitmap for adapter configuration73 74 AdaptMode bit definition75 76 ===== ======== ======== ====================================================77 Bit Val(hex) Val(dec) Meaning78 ===== ======== ======== ====================================================79 0 0x01 1 Support more than two drives. (Not used)80 1 0x02 2 Use DOS compatible mapping for HDs greater than 1GB.81 2 0x04 4 Reset SCSI Bus on startup.82 3 0x08 8 Active Negation: Improves SCSI Bus noise immunity.83 4 0x10 16 Immediate return on BIOS seek command. (Not used)84 (*)5 0x20 32 Check for LUNs >= 1.85 ===== ======== ======== ====================================================86 87tags88 Default: 3, Acceptable values: 0-589 90 The number of tags is 1<<x, if x has been specified91 92reset_delay93 Default: 1, Acceptable values: 0-18094 95 The seconds to not accept commands after a SCSI Reset96 97 98For the built in driver the parameters should be prefixed with99dc395x. (eg "dc395x.safe=1")100 101 102Copyright103---------104The driver is free software. It is protected by the GNU General Public105License (GPL). Please read it, before using this driver. It should be106included in your kernel sources and with your distribution. It carries the107filename COPYING. If you don't have it, please ask me to send you one by108email.109 110Note: The GNU GPL says also something about warranty and liability.111Please be aware the following: While we do my best to provide a working and112reliable driver, there is a chance, that it will kill your valuable data.113We refuse to take any responsibility for that. The driver is provided as-is114and YOU USE IT AT YOUR OWN RESPONSIBILITY.115