1 /*
2 * linux/drivers/ide/legacy/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/setup.h>
20 #include <asm/atarihw.h>
21 #include <asm/atariints.h>
22 #include <asm/atari_stdma.h>
23
24
25 /*
26 * Base of the IDE interface
27 */
28
29 #define ATA_HD_BASE 0xfff00000
30
31 /*
32 * Offsets from the above base
33 */
34
35 #define ATA_HD_DATA 0x00
36 #define ATA_HD_ERROR 0x05 /* see err-bits */
37 #define ATA_HD_NSECTOR 0x09 /* nr of sectors to read/write */
38 #define ATA_HD_SECTOR 0x0d /* starting sector */
39 #define ATA_HD_LCYL 0x11 /* starting cylinder */
40 #define ATA_HD_HCYL 0x15 /* high byte of starting cyl */
41 #define ATA_HD_SELECT 0x19 /* 101dhhhh , d=drive, hhhh=head */
42 #define ATA_HD_STATUS 0x1d /* see status-bits */
43 #define ATA_HD_CONTROL 0x39
44
45 static int falconide_offsets[IDE_NR_PORTS] __initdata = {
46 ATA_HD_DATA, ATA_HD_ERROR, ATA_HD_NSECTOR, ATA_HD_SECTOR, ATA_HD_LCYL,
47 ATA_HD_HCYL, ATA_HD_SELECT, ATA_HD_STATUS, ATA_HD_CONTROL, -1
48 };
49
50
51 /*
52 * falconide_intr_lock is used to obtain access to the IDE interrupt,
53 * which is shared between several drivers.
54 */
55
56 int falconide_intr_lock;
57
58
59 /*
60 * Probe for a Falcon IDE interface
61 */
62
falconide_init(void)63 void __init falconide_init(void)
64 {
65 if (MACH_IS_ATARI && ATARIHW_PRESENT(IDE)) {
66 hw_regs_t hw;
67 int index;
68
69 ide_setup_ports(&hw, (ide_ioreg_t)ATA_HD_BASE, falconide_offsets,
70 0, 0, NULL,
71 // falconide_iops,
72 IRQ_MFP_IDE);
73 index = ide_register_hw(&hw, NULL);
74
75 if (index != -1)
76 printk("ide%d: Falcon IDE interface\n", index);
77 }
78 }
79