1 /*
2 * 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/module.h>
12 #include <linux/types.h>
13 #include <linux/mm.h>
14 #include <linux/interrupt.h>
15 #include <linux/blkdev.h>
16 #include <linux/hdreg.h>
17 #include <linux/ide.h>
18 #include <linux/init.h>
19
20 #include <asm/setup.h>
21 #include <asm/atarihw.h>
22 #include <asm/atariints.h>
23 #include <asm/atari_stdma.h>
24
25
26 /*
27 * Base of the IDE interface
28 */
29
30 #define ATA_HD_BASE 0xfff00000
31
32 /*
33 * Offsets from the above base
34 */
35
36 #define ATA_HD_CONTROL 0x39
37
38 /*
39 * falconide_intr_lock is used to obtain access to the IDE interrupt,
40 * which is shared between several drivers.
41 */
42
43 int falconide_intr_lock;
44 EXPORT_SYMBOL(falconide_intr_lock);
45
46 static void __init falconide_setup_ports(hw_regs_t *hw)
47 {
48 int i;
49
50 memset(hw, 0, sizeof(*hw));
51
52 hw->io_ports[IDE_DATA_OFFSET] = ATA_HD_BASE;
53
54 for (i = 1; i < 8; i++)
55 hw->io_ports[i] = ATA_HD_BASE + 1 + i * 4;
56
57 hw->io_ports[IDE_CONTROL_OFFSET] = ATA_HD_BASE + ATA_HD_CONTROL;
58
59 hw->irq = IRQ_MFP_IDE;
60 hw->ack_intr = NULL;
61 }
62
63 /*
64 * Probe for a Falcon IDE interface
65 */
66
67 static int __init falconide_init(void)
68 {
69 hw_regs_t hw;
70 ide_hwif_t *hwif;
71
72 if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
73 return 0;
74
75 printk(KERN_INFO "ide: Falcon IDE controller\n");
76
77 falconide_setup_ports(&hw);
78
79 hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
80 if (hwif) {
81 u8 index = hwif->index;
82 u8 idx[4] = { index, 0xff, 0xff, 0xff };
83
84 ide_init_port_data(hwif, index);
85 ide_init_port_hw(hwif, &hw);
86
87 ide_get_lock(NULL, NULL);
88 ide_device_add(idx, NULL);
89 ide_release_lock();
90 }
91
92 return 0;
93 }
94
95 module_init(falconide_init);
96
97 MODULE_LICENSE("GPL");
98
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