diff options
Diffstat (limited to 'drivers/ide/umc8672.c')
| -rw-r--r-- | drivers/ide/umc8672.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/drivers/ide/umc8672.c b/drivers/ide/umc8672.c deleted file mode 100644 index cf996f788292..000000000000 --- a/drivers/ide/umc8672.c +++ /dev/null @@ -1,184 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 1995-1996 Linus Torvalds & author (see below) - */ - -/* - * Principal Author/Maintainer: PODIEN@hml2.atlas.de (Wolfram Podien) - * - * This file provides support for the advanced features - * of the UMC 8672 IDE interface. - * - * Version 0.01 Initial version, hacked out of ide.c, - * and #include'd rather than compiled separately. - * This will get cleaned up in a subsequent release. - * - * Version 0.02 now configs/compiles separate from ide.c -ml - * Version 0.03 enhanced auto-tune, fix display bug - * Version 0.05 replace sti() with restore_flags() -ml - * add detection of possible race condition -ml - */ - -/* - * VLB Controller Support from - * Wolfram Podien - * Rohoefe 3 - * D28832 Achim - * Germany - * - * To enable UMC8672 support there must a lilo line like - * append="ide0=umc8672"... - * To set the speed according to the abilities of the hardware there must be a - * line like - * #define UMC_DRIVE0 11 - * in the beginning of the driver, which sets the speed of drive 0 to 11 (there - * are some lines present). 0 - 11 are allowed speed values. These values are - * the results from the DOS speed test program supplied from UMC. 11 is the - * highest speed (about PIO mode 3) - */ -#define REALLY_SLOW_IO /* some systems can safely undef this */ - -#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 "umc8672" - -/* - * Default speeds. These can be changed with "auto-tune" and/or hdparm. - */ -#define UMC_DRIVE0 1 /* DOS measured drive speeds */ -#define UMC_DRIVE1 1 /* 0 to 11 allowed */ -#define UMC_DRIVE2 1 /* 11 = Fastest Speed */ -#define UMC_DRIVE3 1 /* In case of crash reduce speed */ - -static u8 current_speeds[4] = {UMC_DRIVE0, UMC_DRIVE1, UMC_DRIVE2, UMC_DRIVE3}; -static const u8 pio_to_umc [5] = {0, 3, 7, 10, 11}; /* rough guesses */ - -/* 0 1 2 3 4 5 6 7 8 9 10 11 */ -static const u8 speedtab [3][12] = { - {0x0f, 0x0b, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x1}, - {0x03, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x1}, - {0xff, 0xcb, 0xc0, 0x58, 0x36, 0x33, 0x23, 0x22, 0x21, 0x11, 0x10, 0x0} -}; - -static void out_umc(char port, char wert) -{ - outb_p(port, 0x108); - outb_p(wert, 0x109); -} - -static inline u8 in_umc(char port) -{ - outb_p(port, 0x108); - return inb_p(0x109); -} - -static void umc_set_speeds(u8 speeds[]) -{ - int i, tmp; - - outb_p(0x5A, 0x108); /* enable umc */ - - out_umc(0xd7, (speedtab[0][speeds[2]] | (speedtab[0][speeds[3]]<<4))); - out_umc(0xd6, (speedtab[0][speeds[0]] | (speedtab[0][speeds[1]]<<4))); - tmp = 0; - for (i = 3; i >= 0; i--) - tmp = (tmp << 2) | speedtab[1][speeds[i]]; - out_umc(0xdc, tmp); - for (i = 0; i < 4; i++) { - out_umc(0xd0 + i, speedtab[2][speeds[i]]); - out_umc(0xd8 + i, speedtab[2][speeds[i]]); - } - outb_p(0xa5, 0x108); /* disable umc */ - - printk("umc8672: drive speeds [0 to 11]: %d %d %d %d\n", - speeds[0], speeds[1], speeds[2], speeds[3]); -} - -static void umc_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) -{ - ide_hwif_t *mate = hwif->mate; - unsigned long flags; - const u8 pio = drive->pio_mode - XFER_PIO_0; - - printk("%s: setting umc8672 to PIO mode%d (speed %d)\n", - drive->name, pio, pio_to_umc[pio]); - if (mate) - spin_lock_irqsave(&mate->lock, flags); - if (mate && mate->handler) { - printk(KERN_ERR "umc8672: other interface is busy: exiting tune_umc()\n"); - } else { - current_speeds[drive->name[2] - 'a'] = pio_to_umc[pio]; - umc_set_speeds(current_speeds); - } - if (mate) - spin_unlock_irqrestore(&mate->lock, flags); -} - -static const struct ide_port_ops umc8672_port_ops = { - .set_pio_mode = umc_set_pio_mode, -}; - -static const struct ide_port_info umc8672_port_info __initconst = { - .name = DRV_NAME, - .chipset = ide_umc8672, - .port_ops = &umc8672_port_ops, - .host_flags = IDE_HFLAG_NO_DMA, - .pio_mask = ATA_PIO4, -}; - -static int __init umc8672_probe(void) -{ - unsigned long flags; - - if (!request_region(0x108, 2, "umc8672")) { - printk(KERN_ERR "umc8672: ports 0x108-0x109 already in use.\n"); - return 1; - } - local_irq_save(flags); - outb_p(0x5A, 0x108); /* enable umc */ - if (in_umc (0xd5) != 0xa0) { - local_irq_restore(flags); - printk(KERN_ERR "umc8672: not found\n"); - release_region(0x108, 2); - return 1; - } - outb_p(0xa5, 0x108); /* disable umc */ - - umc_set_speeds(current_speeds); - local_irq_restore(flags); - - return ide_legacy_device_add(&umc8672_port_info, 0); -} - -static bool probe_umc8672; - -module_param_named(probe, probe_umc8672, bool, 0); -MODULE_PARM_DESC(probe, "probe for UMC8672 chipset"); - -static int __init umc8672_init(void) -{ - if (probe_umc8672 == 0) - goto out; - - if (umc8672_probe() == 0) - return 0; -out: - return -ENODEV; -} - -module_init(umc8672_init); - -MODULE_AUTHOR("Wolfram Podien"); -MODULE_DESCRIPTION("Support for UMC 8672 IDE chipset"); -MODULE_LICENSE("GPL"); |