drivers/block/qd6580.c

/* */
This source file includes following definitions.
tune_qd6580
init_qd6580
   1 /*
   2  *  linux/drivers/block/qd6580.c       Version 0.02  Feb 09, 1996
   3  *
   4  *  Copyright (C) 1996  Linus Torvalds & author (see below)
   5  */
   6 
   7 /*
   8  * QDI QD6580 EIDE controller fast support by Colten Edwards.
   9  * No net access, but (maybe) can be reached at pje120@cs.usask.ca
  10  */
  11 
  12 #undef REALLY_SLOW_IO           /* most systems can safely undef this */
  13 
  14 #include <linux/types.h>
  15 #include <linux/kernel.h>
  16 #include <linux/delay.h>
  17 #include <linux/timer.h>
  18 #include <linux/mm.h>
  19 #include <linux/ioport.h>
  20 #include <linux/blkdev.h>
  21 #include <linux/hdreg.h>
  22 #include <asm/io.h>
  23 #include "ide.h"
  24 #include "ide_modes.h"
  25 
  26 /*
  27  * Register 0xb3 looks like:
  28  *      0x4f is fast            mode3 ?
  29  *      0x3f is medium          mode2 ?
  30  *      0x2f is slower          mode1 ?
  31  *      0x1f is slower yet      mode0 ?
  32  *      0x0f ???                ???
  33  *
  34  * Don't know whether this sets BOTH drives, or just the first drive.
  35  * Don't know if there is a separate setting for the second drive.
  36  *
  37  * Feel free to patch this if you have one of these beasts
  38  * and can work out the answers!
  39  *
  40  * I/O ports are 0xb0 0xb2 and 0xb3
  41  *
  42  * More research on qd6580 being done by willmore@cig.mot.com (David)
  43  *      -- this is apparently a *dual* IDE interface
  44  */
  45 
  46 static void tune_qd6580 (ide_drive_t *drive, byte pio)
     /*  */
  47 {
  48         unsigned long flags;
  49 
  50         if (pio == 255)
  51                 pio = ide_get_best_pio_mode (drive);
  52         if (pio > 3)
  53                 pio = 3;
  54 
  55         save_flags(flags);
  56         cli();
  57         outb_p(0x8d,0xb0);
  58         outb_p(0x0 ,0xb2);
  59         outb_p(((pio+1)<<4)|0x0f,0xb3);
  60         inb(0x3f6);
  61         restore_flags(flags);
  62 }
  63 
  64 void init_qd6580 (void)
     /*  */
  65 {
  66         ide_hwifs[0].chipset = ide_qd6580;
  67         ide_hwifs[1].chipset = ide_qd6580;
  68         ide_hwifs[0].tuneproc = &tune_qd6580;
  69 }
/* */
root/drivers/block/qd6580.c

DEFINITIONS
