opti621: remove stale driver history

 * Jan Harkes <jaharkes@cwi.nl>,

 * Mark Lord <mlord@pobox.com>

 * Some parts of code are from ali14xx.c and from rz1000.c.

 *

 * OPTi is trademark of OPTi, Octek is trademark of Octek.

 *

 * I used docs from OPTi databook, from ftp.opti.com, file 9123-0002.ps

 * and disassembled/traced setupvic.exe (DOS program).

 * It increases kernel code about 2 kB.

 * I don't have this card no more, but I hope I can get some in case

 * of needed development.

 * My card is Octek PIDE 1.01 (on card) or OPTiViC (program).

 * It has a place for a secondary connector in circuit, but nothing

 * is there. Also BIOS says no address for

 * secondary controller (see bellow in ide_init_opti621).

 * I've only tested this on my system, which only has one disk.

 * It's Western Digital WDAC2850, with PIO mode 3. The PCI bus

 * is at 20 MHz (I have DX2/80, I tried PCI at 40, but I got random

 * lockups). I tried the OCTEK double speed CD-ROM and

 * it does not work! But I can't boot DOS also, so it's probably

 * hardware fault. I have connected Conner 80MB, the Seagate 850MB (no

 * problems) and Seagate 1GB (as slave, WD as master). My experiences

 * with the third, 1GB drive: I got 3MB/s (hdparm), but sometimes

 * it slows to about 100kB/s! I don't know why and I have

 * not this drive now, so I can't try it again.

 * I write this driver because I lost the paper ("manual") with

 * settings of jumpers on the card and I have to boot Linux with

 * Loadlin except LILO, cause I have to run the setupvic.exe program

 * already or I get disk errors (my test: rpm -Vf

 * /usr/X11R6/bin/XF86_SVGA - or any big file).

 * Some numbers from hdparm -t /dev/hda:

 * Timing buffer-cache reads:   32 MB in  3.02 seconds =10.60 MB/sec

 * Timing buffered disk reads:  16 MB in  5.52 seconds = 2.90 MB/sec

 * I have 4 Megs/s before, but I don't know why (maybe changes

 * in hdparm test).

 * After release of 0.1, I got some successful reports, so it might work.

 *

 * The main problem with OPTi is that some timings for master

 * and slave must be the same. For example, if you have master

 * PIO 3 and slave PIO 0, driver have to set some timings of

 * master for PIO 0. Second problem is that opti621_set_pio_mode

 * got only one drive to set, but have to set both drives.

 * This is solved in compute_pios. If you don't set

 * the second drive, compute_pios use ide_get_best_pio_mode

 * for autoselect mode (you can change it to PIO 0, if you want).

 * If you then set the second drive to another PIO, the old value

 * (automatically selected) will be overrided by yours.

 * There is a 25/33MHz switch in configuration

 * register, but driver is written for use at any frequency.

 *

 * Version 0.1, Nov 8, 1996

 * by Jaromir Koutek, for 2.1.8.

 * Initial version of driver.

 *

 * Version 0.2

 * Number 0.2 skipped.

 *

 * Version 0.3, Nov 29, 1997

 * by Mark Lord (probably), for 2.1.68

 * Updates for use with new IDE block driver.

 *

 * Version 0.4, Dec 14, 1997

 * by Jan Harkes

 * Fixed some errors and cleaned the code.

 *

 * Version 0.5, Jan 2, 1998

 * by Jaromir Koutek

 * Updates for use with (again) new IDE block driver.

 * Update of documentation.

 *

 * Version 0.6, Jan 2, 1999

 * by Jaromir Koutek

 * Reversed to version 0.3 of the driver, because

 * 0.5 doesn't work.

 */

#include <linux/types.h>