patch-2.1.66 linux/drivers/char/ftape/fc-10.c

• Lines: 161
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.65/linux/drivers/char/ftape/fc-10.c
• Orig date: Thu Apr 11 23:49:34 1996

diff -u --recursive --new-file v2.1.65/linux/drivers/char/ftape/fc-10.c linux/drivers/char/ftape/fc-10.c
@@ -1,160 +0,0 @@
-/* Yo, Emacs! we're -*- Linux-C -*-
- *
- 
-   Copyright (C) 1993,1994 Jon Tombs.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   The entire guts of this program was written by dosemu, modified to
-   record reads and writes to the ports in the 0x180-0x188 address space,
-   while running the CMS program TAPE.EXE V2.0.5 supplied with the drive.
-
-   Modified to use an array of addresses and generally cleaned up (made
-   much shorter) 4 June 94, dosemu isn't that good at writing short code it
-   would seem :-). Made independent of 0x180, but I doubt it will work
-   at any other address.
-
-   Modified for distribution with ftape source. 21 June 94, SJL.
-
-   Modifications on 20 October 95, by Daniel Cohen (catman@wpi.edu):
-   Modified to support different DMA, IRQ, and IO Ports.  Borland's
-   Turbo Debugger in virtual 8086 mode (TD386.EXE with hardware breakpoints
-   provided by the TDH386.SYS Device Driver) was used on the CMS program
-   TAPE V4.0.5.  I set breakpoints on I/O to ports 0x180-0x187.  Note that
-   CMS's program will not successfully configure the tape drive if you set
-   breakpoints on IO Reads, but you can set them on IO Writes without problems.
-   Known problems:
-   - You can not use DMA Channels 5 or 7.
-
-   Modification on 29 January 96, by Daniel Cohen (catman@wpi.edu):
-   Modified to only accept IRQs 3 - 7, or 9.  Since we can only send a 3 bit
-   number representing the IRQ to the card, special handling is required when
-   IRQ 9 is selected.  IRQ 2 and 9 are the same, and we should request IRQ 9
-   from the kernel while telling the card to use IRQ 2.  Thanks to Greg
-   Crider (gcrider@iclnet.org) for finding and locating this bug, as well as
-   testing the patch.
-
- *
- *      This file contains code for the CMS FC-10/FC-20 card.
- */
-
-#include <linux/ftape.h>
-#include <asm/io.h>
-
-#include "tracing.h"
-#include "fdc-io.h"
-#include "fc-10.h"
-
-#ifdef PROBE_FC10
-
-/*  This code will only work if the FC-10 (or FC-20) is set to
- *  use DMA channels 1, 2, or 3.  DMA channels 5 and 7 seem to be 
- *  initialized by the same command as channels 1 and 3, respectively.
- */
-#if (FDC_DMA > 3)
-#error : The FC-10/20 must be set to use DMA channels 1, 2, or 3!
-#endif
-
-/*  Only allow the FC-10/20 to use IRQ 3-7, or 9.  Note that CMS's program
- *  only accepts IRQ's 2-7, but in linux, IRQ 2 is the same as IRQ 9.
- */
-#if (FDC_IRQ < 3 || FDC_IRQ == 8 || FDC_IRQ > 9)
-#error : The FC-10/20 must be set to use IRQ levels 3 - 7, or 9!
-#error :              Note IRQ 9 is the same as IRQ 2
-#endif
-
-unsigned short inbs_magic[] = {
-	0x3, 0x3, 0x0, 0x4, 0x7, 0x2, 0x5, 0x3, 0x1, 0x4,
-	0x3, 0x5, 0x2, 0x0, 0x3, 0x7, 0x4, 0x2,
-	0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7
-};
-
-unsigned short fc10_ports[] = {
-	0x180, 0x210, 0x2A0, 0x300, 0x330, 0x340, 0x370
-};
-
-int fc10_enable(void)
-{
-	int i;
-	byte cardConfig = 0x00;
-	byte x;
-
-	/*  Clear state machine ???
-	 */
-	for (i = 0; i < NR_ITEMS(inbs_magic); i++) {
-		inb(FDC_BASE + inbs_magic[i]);
-	}
-	outb(0x0, FDC_BASE);
-
-	x = inb(FDC_BASE);
-	if (x == 0x13 || x == 0x93) {
-		for (i = 1; i < 8; i++) {
-			if (inb(FDC_BASE + i) != x) {
-				return 0;
-			}
-		}
-	} else {
-		return 0;
-	}
-
-	outb(0x8, FDC_BASE);
-
-	for (i = 0; i < 8; i++) {
-		if (inb(FDC_BASE + i) != 0x0) {
-			return 0;
-		}
-	}
-	outb(0x10, FDC_BASE);
-
-	for (i = 0; i < 8; i++) {
-		if (inb(FDC_BASE + i) != 0xff) {
-			return 0;
-		}
-	}
-
-	/*  Okay, we found a FC-10 card ! ???
-	 */
-	outb(0x0, fdc.ccr);
-
-	/*  Clear state machine again ???
-	 */
-	for (i = 0; i < NR_ITEMS(inbs_magic); i++) {
-		inb(FDC_BASE + inbs_magic[i]);
-	}
-	/* Send io port */
-	for (i = 0; i < NR_ITEMS(fc10_ports); i++)
-		if (FDC_BASE == fc10_ports[i])
-			cardConfig = i + 1;
-	if (cardConfig == 0)
-		return 0;	/* Invalid I/O Port */
-	/* and IRQ - If using IRQ 9, tell the FC card it is actually IRQ 2 */
-	if (FDC_IRQ != 9)
-		cardConfig |= FDC_IRQ << 3;
-	else
-		cardConfig |= 2 << 3;
-
-	/* and finally DMA Channel */
-	cardConfig |= FDC_DMA << 6;
-	outb(cardConfig, FDC_BASE);	/* DMA [2 bits]/IRQ [3 bits]/BASE [3 bits] */
-
-	/*  Enable FC-10 ???
-	 */
-	outb(0, fdc.ccr);
-	outb(0, FDC_BASE + 0x6);
-	outb(8, fdc.dor);
-	outb(8, fdc.dor);
-	outb(1, FDC_BASE + 0x6);
-
-	/*  Initialize fdc, select drive B:
-	 */
-	outb(0x08, fdc.dor);	/* assert reset, dma & irq enabled */
-	outb(0x0c, fdc.dor);	/* release reset */
-	outb(0x2d, fdc.dor);	/* select drive 1 */
-
-	return (x == 0x93) ? 2 : 1;
-}
-
-#endif /* CMS_FC10_CONTROLLER */