1README file for the dc395x SCSI driver 2========================================== 3 4Status 5------ 6The driver has been tested with CD-R and CD-R/W drives. These should 7be safe to use. Testing with hard disks has not been done to any 8great degree and caution should be exercised if you want to attempt 9to use this driver with hard disks. 10 11This is a 2.5 only driver. For a 2.4 driver please see the original 12driver (which this driver started from) at 13http://www.garloff.de/kurt/linux/dc395/ 14 15Problems, questions and patches should be submitted to the mailing 16list. Details on the list, including archives, are available at 17http://lists.twibble.org/mailman/listinfo/dc395x/ 18 19Parameters 20---------- 21The driver uses the settings from the EEPROM set in the SCSI BIOS 22setup. If there is no EEPROM, the driver uses default values. 23Both can be overridden by command line parameters (module or kernel 24parameters). 25 26The following parameters are available: 27 28 - safe 29 Default: 0, Acceptable values: 0 or 1 30 31 If safe is set to 1 then the adapter will use conservative 32 ("safe") default settings. This sets: 33 34 shortcut for dc395x=7,4,9,15,2,10 35 36 - adapter_id 37 Default: 7, Acceptable values: 0 to 15 38 39 Sets the host adapter SCSI ID. 40 41 - max_speed 42 Default: 1, Acceptable value: 0 to 7 43 0 = 20 Mhz 44 1 = 12.2 Mhz 45 2 = 10 Mhz 46 3 = 8 Mhz 47 4 = 6.7 Mhz 48 5 = 5.8 Hhz 49 6 = 5 Mhz 50 7 = 4 Mhz 51 52 - dev_mode 53 Bitmap for device configuration 54 55 DevMode bit definition: 56 Bit Val(hex) Val(dec) Meaning 57 *0 0x01 1 Parity check 58 *1 0x02 2 Synchronous Negotiation 59 *2 0x04 4 Disconnection 60 *3 0x08 8 Send Start command on startup. (Not used) 61 *4 0x10 16 Tagged Command Queueing 62 *5 0x20 32 Wide Negotiation 63 64 - adapter_mode 65 Bitmap for adapter configuration 66 67 AdaptMode bit definition 68 Bit Val(hex) Val(dec) Meaning 69 *0 0x01 1 Support more than two drives. (Not used) 70 *1 0x02 2 Use DOS compatible mapping for HDs greater than 1GB. 71 *2 0x04 4 Reset SCSI Bus on startup. 72 *3 0x08 8 Active Negation: Improves SCSI Bus noise immunity. 73 4 0x10 16 Immediate return on BIOS seek command. (Not used) 74 (*)5 0x20 32 Check for LUNs >= 1. 75 76 - tags 77 Default: 3, Acceptable values: 0-5 78 79 The number of tags is 1<<x, if x has been specified 80 81 - reset_delay 82 Default: 1, Acceptable values: 0-180 83 84 The seconds to not accept commands after a SCSI Reset 85 86 87For the built in driver the parameters should be prefixed with 88dc395x. (eg "dc395x.safe=1") 89 90 91Copyright 92--------- 93The driver is free software. It is protected by the GNU General Public 94License (GPL). Please read it, before using this driver. It should be 95included in your kernel sources and with your distribution. It carries the 96filename COPYING. If you don't have it, please ask me to send you one by 97email. 98Note: The GNU GPL says also something about warranty and liability. 99Please be aware the following: While we do my best to provide a working and 100reliable driver, there is a chance, that it will kill your valuable data. 101We refuse to take any responsibility for that. The driver is provided as-is 102and YOU USE IT AT YOUR OWN RESPONSIBILITY. 103