1 /*
2 * linux/drivers/ide/falconide.c -- Atari Falcon IDE Driver
3 *
4 * Created 12 Jul 1997 by Geert Uytterhoeven
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive for
8 * more details.
9 */
10
11 #include <linux/types.h>
12 #include <linux/mm.h>
13 #include <linux/interrupt.h>
14 #include <linux/blkdev.h>
15 #include <linux/hdreg.h>
16 #include <linux/ide.h>
17 #include <linux/init.h>
18
19 #include <asm/atarihw.h>
20 #include <asm/atariints.h>
21 #include <asm/atari_stdma.h>
22
23
24 /*
25 * Base of the IDE interface
26 */
27
28 #define ATA_HD_BASE 0xfff00000
29
30 /*
31 * Offsets from the above base
32 */
33
34 #define ATA_HD_DATA 0x00
35 #define ATA_HD_ERROR 0x05 /* see err-bits */
36 #define ATA_HD_NSECTOR 0x09 /* nr of sectors to read/write */
37 #define ATA_HD_SECTOR 0x0d /* starting sector */
38 #define ATA_HD_LCYL 0x11 /* starting cylinder */
39 #define ATA_HD_HCYL 0x15 /* high byte of starting cyl */
40 #define ATA_HD_SELECT 0x19 /* 101dhhhh , d=drive, hhhh=head */
41 #define ATA_HD_STATUS 0x1d /* see status-bits */
42 #define ATA_HD_CONTROL 0x39
43
44 static int __init falconide_offsets[IDE_NR_PORTS] = {
45 ATA_HD_DATA, ATA_HD_ERROR, ATA_HD_NSECTOR, ATA_HD_SECTOR, ATA_HD_LCYL,
46 ATA_HD_HCYL, ATA_HD_SELECT, ATA_HD_STATUS, ATA_HD_CONTROL, -1
47 };
48
49
50 /*
51 * Probe for a Falcon IDE interface
52 */
53
54 void __init falconide_init(void)
55 {
56 if (MACH_IS_ATARI && ATARIHW_PRESENT(IDE)) {
57 hw_regs_t hw;
58 int index;
59
60 ide_setup_ports(&hw, (ide_ioreg_t)ATA_HD_BASE, falconide_offsets,
61 0, 0, NULL, IRQ_MFP_IDE);
62 index = ide_register_hw(&hw, NULL);
63
64 if (index != -1)
65 printk("ide%d: Falcon IDE interface\n", index);
66 }
67 }
68
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