diff options
Diffstat (limited to 'drivers/ide/dtc2278.c')
| -rw-r--r-- | drivers/ide/dtc2278.c | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/drivers/ide/dtc2278.c b/drivers/ide/dtc2278.c deleted file mode 100644 index 714e8cd0fa49..000000000000 --- a/drivers/ide/dtc2278.c +++ /dev/null @@ -1,155 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 1996 Linus Torvalds & author (see below) - */ - -#include <linux/module.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/ide.h> -#include <linux/init.h> - -#include <asm/io.h> - -#define DRV_NAME "dtc2278" - -/* - * 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 DEFINE_SPINLOCK(dtc2278_lock); - -static void dtc2278_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) -{ - unsigned long flags; - - if (drive->pio_mode >= XFER_PIO_3) { - spin_lock_irqsave(&dtc2278_lock, flags); - /* - * This enables PIO mode4 (3?) on the first interface - */ - sub22(1,0xc3); - sub22(0,0xa0); - spin_unlock_irqrestore(&dtc2278_lock, flags); - } else { - /* we don't know how to set it back again.. */ - /* Actually we do - there is a data sheet available for the - Winbond but does anyone actually care */ - } -} - -static const struct ide_port_ops dtc2278_port_ops = { - .set_pio_mode = dtc2278_set_pio_mode, -}; - -static const struct ide_port_info dtc2278_port_info __initconst = { - .name = DRV_NAME, - .chipset = ide_dtc2278, - .port_ops = &dtc2278_port_ops, - .host_flags = IDE_HFLAG_SERIALIZE | - IDE_HFLAG_NO_UNMASK_IRQS | - IDE_HFLAG_IO_32BIT | - /* disallow ->io_32bit changes */ - IDE_HFLAG_NO_IO_32BIT | - IDE_HFLAG_NO_DMA | - IDE_HFLAG_DTC2278, - .pio_mask = ATA_PIO4, -}; - -static int __init dtc2278_probe(void) -{ - unsigned long flags; - - 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); - - return ide_legacy_device_add(&dtc2278_port_info, 0); -} - -static bool probe_dtc2278; - -module_param_named(probe, probe_dtc2278, bool, 0); -MODULE_PARM_DESC(probe, "probe for DTC2278xx chipsets"); - -static int __init dtc2278_init(void) -{ - if (probe_dtc2278 == 0) - return -ENODEV; - - if (dtc2278_probe()) { - printk(KERN_ERR "dtc2278: ide interfaces already in use!\n"); - return -EBUSY; - } - return 0; -} - -module_init(dtc2278_init); - -MODULE_AUTHOR("See Local File"); -MODULE_DESCRIPTION("support of DTC-2278 VLB IDE chipsets"); -MODULE_LICENSE("GPL"); |