diff options
Diffstat (limited to 'drivers/ide/legacy/dtc2278.c')
| -rw-r--r-- | drivers/ide/legacy/dtc2278.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/drivers/ide/legacy/dtc2278.c b/drivers/ide/legacy/dtc2278.c deleted file mode 100644 index 20eb5b872ca..00000000000 --- a/drivers/ide/legacy/dtc2278.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * linux/drivers/ide/legacy/dtc2278.c Version 0.02 Feb 10, 1996 - * - * Copyright (C) 1996 Linus Torvalds & author (see below) - */ - -#undef REALLY_SLOW_IO /* most systems can safely undef this */ - -#include <linux/module.h> -#include <linux/config.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/timer.h> -#include <linux/mm.h> -#include <linux/ioport.h> -#include <linux/blkdev.h> -#include <linux/hdreg.h> -#include <linux/ide.h> -#include <linux/init.h> - -#include <asm/io.h> - -/* - * Changing this #undef to #define may solve start up problems in some systems. - */ -#undef ALWAYS_SET_DTC2278_PIO_MODE - -/* - * From: andy@cercle.cts.com (Dyan Wile) - * - * Below is a patch for DTC-2278 - alike software-programmable controllers - * The code enables the secondary IDE controller and the PIO4 (3?) timings on - * the primary (EIDE). You may probably have to enable the 32-bit support to - * get the full speed. You better get the disk interrupts disabled ( hdparm -u0 - * /dev/hd.. ) for the drives connected to the EIDE interface. (I get my - * filesystem corrupted with -u1, but under heavy disk load only :-) - * - * This card is now forced to use the "serialize" feature, - * and irq-unmasking is disallowed. If io_32bit is enabled, - * it must be done for BOTH drives on each interface. - * - * This code was written for the DTC2278E, but might work with any of these: - * - * DTC2278S has only a single IDE interface. - * DTC2278D has two IDE interfaces and is otherwise identical to the S version. - * DTC2278E also has serial ports and a printer port - * DTC2278EB: has onboard BIOS, and "works like a charm" -- Kent Bradford <kent@theory.caltech.edu> - * - * There may be a fourth controller type. The S and D versions use the - * Winbond chip, and I think the E version does also. - * - */ - -static void sub22 (char b, char c) -{ - int i; - - for(i = 0; i < 3; ++i) { - inb(0x3f6); - outb_p(b,0xb0); - inb(0x3f6); - outb_p(c,0xb4); - inb(0x3f6); - if(inb(0xb4) == c) { - outb_p(7,0xb0); - inb(0x3f6); - return; /* success */ - } - } -} - -static void tune_dtc2278 (ide_drive_t *drive, u8 pio) -{ - unsigned long flags; - - pio = ide_get_best_pio_mode(drive, pio, 4, NULL); - - if (pio >= 3) { - spin_lock_irqsave(&ide_lock, flags); - /* - * This enables PIO mode4 (3?) on the first interface - */ - sub22(1,0xc3); - sub22(0,0xa0); - spin_unlock_irqrestore(&ide_lock, flags); - } else { - /* we don't know how to set it back again.. */ - } - - /* - * 32bit I/O has to be enabled for *both* drives at the same time. - */ - drive->io_32bit = 1; - HWIF(drive)->drives[!drive->select.b.unit].io_32bit = 1; -} - -static int __init probe_dtc2278(void) -{ - unsigned long flags; - ide_hwif_t *hwif, *mate; - - hwif = &ide_hwifs[0]; - mate = &ide_hwifs[1]; - - if (hwif->chipset != ide_unknown || mate->chipset != ide_unknown) - return 1; - - local_irq_save(flags); - /* - * This enables the second interface - */ - outb_p(4,0xb0); - inb(0x3f6); - outb_p(0x20,0xb4); - inb(0x3f6); -#ifdef ALWAYS_SET_DTC2278_PIO_MODE - /* - * This enables PIO mode4 (3?) on the first interface - * and may solve start-up problems for some people. - */ - sub22(1,0xc3); - sub22(0,0xa0); -#endif - local_irq_restore(flags); - - hwif->serialized = 1; - hwif->chipset = ide_dtc2278; - hwif->tuneproc = &tune_dtc2278; - hwif->drives[0].no_unmask = 1; - hwif->drives[1].no_unmask = 1; - hwif->mate = mate; - - mate->serialized = 1; - mate->chipset = ide_dtc2278; - mate->drives[0].no_unmask = 1; - mate->drives[1].no_unmask = 1; - mate->mate = hwif; - mate->channel = 1; - - probe_hwif_init(hwif); - probe_hwif_init(mate); - - create_proc_ide_interfaces(); - - return 0; -} - -/* Can be called directly from ide.c. */ -int __init dtc2278_init(void) -{ - if (probe_dtc2278()) { - printk(KERN_ERR "dtc2278: ide interfaces already in use!\n"); - return -EBUSY; - } - return 0; -} - -#ifdef MODULE -module_init(dtc2278_init); -#endif - -MODULE_AUTHOR("See Local File"); -MODULE_DESCRIPTION("support of DTC-2278 VLB IDE chipsets"); -MODULE_LICENSE("GPL"); |