summaryrefslogtreecommitdiffstats
path: root/drivers/char/ftape/lowlevel/fc-10.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/char/ftape/lowlevel/fc-10.c')
-rw-r--r--drivers/char/ftape/lowlevel/fc-10.c175
1 files changed, 0 insertions, 175 deletions
diff --git a/drivers/char/ftape/lowlevel/fc-10.c b/drivers/char/ftape/lowlevel/fc-10.c
deleted file mode 100644
index 9bc1cddade76..000000000000
--- a/drivers/char/ftape/lowlevel/fc-10.c
+++ /dev/null
@@ -1,175 +0,0 @@
-/*
- *
-
- 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.
-
- Modification on 11 December 96, by Claus Heine (claus@momo.math.rwth-aachen.de):
- Modified a little to use variahle ft_fdc_base, ft_fdc_irq, ft_fdc_dma
- instead of preprocessor symbols. Thus we can compile this into the module
- or kernel and let the user specify the options as command line arguments.
-
- *
- * $Source: /homes/cvs/ftape-stacked/ftape/lowlevel/fc-10.c,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:18:04 $
- *
- * This file contains code for the CMS FC-10/FC-20 card.
- */
-
-#include <asm/io.h>
-#include <linux/ftape.h>
-#include "../lowlevel/ftape-tracing.h"
-#include "../lowlevel/fdc-io.h"
-#include "../lowlevel/fc-10.h"
-
-static __u16 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
-};
-
-static __u16 fc10_ports[] = {
- 0x180, 0x210, 0x2A0, 0x300, 0x330, 0x340, 0x370
-};
-
-int fc10_enable(void)
-{
- int i;
- __u8 cardConfig = 0x00;
- __u8 x;
- TRACE_FUN(ft_t_flow);
-
-/* 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 (ft_fdc_dma > 3) {
- TRACE_ABORT(0, ft_t_err,
-"Error: The FC-10/20 must be set to use DMA channels 1, 2, or 3!");
- }
-/* 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 (ft_fdc_irq < 3 || ft_fdc_irq == 8 || ft_fdc_irq > 9) {
- TRACE_ABORT(0, ft_t_err,
-"Error: The FC-10/20 must be set to use IRQ levels 3 - 7, or 9!\n"
-KERN_INFO "Note: IRQ 9 is the same as IRQ 2");
- }
- /* Clear state machine ???
- */
- for (i = 0; i < NR_ITEMS(inbs_magic); i++) {
- inb(ft_fdc_base + inbs_magic[i]);
- }
- outb(0x0, ft_fdc_base);
-
- x = inb(ft_fdc_base);
- if (x == 0x13 || x == 0x93) {
- for (i = 1; i < 8; i++) {
- if (inb(ft_fdc_base + i) != x) {
- TRACE_EXIT 0;
- }
- }
- } else {
- TRACE_EXIT 0;
- }
-
- outb(0x8, ft_fdc_base);
-
- for (i = 0; i < 8; i++) {
- if (inb(ft_fdc_base + i) != 0x0) {
- TRACE_EXIT 0;
- }
- }
- outb(0x10, ft_fdc_base);
-
- for (i = 0; i < 8; i++) {
- if (inb(ft_fdc_base + i) != 0xff) {
- TRACE_EXIT 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(ft_fdc_base + inbs_magic[i]);
- }
- /* Send io port */
- for (i = 0; i < NR_ITEMS(fc10_ports); i++)
- if (ft_fdc_base == fc10_ports[i])
- cardConfig = i + 1;
- if (cardConfig == 0) {
- TRACE_EXIT 0; /* Invalid I/O Port */
- }
- /* and IRQ - If using IRQ 9, tell the FC card it is actually IRQ 2 */
- if (ft_fdc_irq != 9)
- cardConfig |= ft_fdc_irq << 3;
- else
- cardConfig |= 2 << 3;
-
- /* and finally DMA Channel */
- cardConfig |= ft_fdc_dma << 6;
- outb(cardConfig, ft_fdc_base); /* DMA [2 bits]/IRQ [3 bits]/BASE [3 bits] */
-
- /* Enable FC-10 ???
- */
- outb(0, fdc.ccr);
- outb(0, fdc.dor2);
- outb(FDC_DMA_MODE /* 8 */, fdc.dor);
- outb(FDC_DMA_MODE /* 8 */, fdc.dor);
- outb(1, fdc.dor2);
-
- /*************************************
- *
- * cH: why the hell should this be necessary? This is done
- * by fdc_reset()!!!
- *
- *************************************/
- /* Initialize fdc, select drive B:
- */
- outb(FDC_DMA_MODE, fdc.dor); /* assert reset, dma & irq enabled */
- /* 0x08 */
- outb(FDC_DMA_MODE|FDC_RESET_NOT, fdc.dor); /* release reset */
- /* 0x08 | 0x04 = 0x0c */
- outb(FDC_DMA_MODE|FDC_RESET_NOT|FDC_MOTOR_1|FTAPE_SEL_B, fdc.dor);
- /* 0x08 | 0x04 | 0x20 | 0x01 = 0x2d */
- /* select drive 1 */ /* why not drive 0 ???? */
- TRACE_EXIT (x == 0x93) ? 2 : 1;
-}