4 * Copyright (C) 1998 by Michael Schmitz
6 * This driver was written based on information obtained from the MacOS IDE
7 * driver binary by Mikael Forselius
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License. See the file COPYING in the main directory of this archive for
14 #include <linux/types.h>
16 #include <linux/interrupt.h>
17 #include <linux/blkdev.h>
18 #include <linux/hdreg.h>
19 #include <linux/delay.h>
20 #include <linux/ide.h>
22 #include <asm/machw.h>
23 #include <asm/macintosh.h>
24 #include <asm/macints.h>
25 #include <asm/mac_baboon.h>
27 #define IDE_BASE 0x50F1A000 /* Base address of IDE controller */
30 * Generic IDE registers as offsets from the base
31 * These match MkLinux so they should be correct.
34 #define IDE_CONTROL 0x38 /* control/altstatus */
37 * Mac-specific registers
41 * this register is odd; it doesn't seem to do much and it's
42 * not word-aligned like virtually every other hardware register
46 #define IDE_IFR 0x101 /* (0x101) IDE interrupt flags on Quadra:
48 * Bit 0+1: some interrupt flags
49 * Bit 2+3: some interrupt enable
51 * Bit 5: IDE interrupt flag (any hwif)
52 * Bit 6: maybe IDE interrupt enable (any hwif) ??
53 * Bit 7: Any interrupt condition
56 volatile unsigned char *ide_ifr
= (unsigned char *) (IDE_BASE
+ IDE_IFR
);
58 int macide_ack_intr(ide_hwif_t
* hwif
)
60 if (*ide_ifr
& 0x20) {
67 static void __init
macide_setup_ports(hw_regs_t
*hw
, unsigned long base
,
68 int irq
, ide_ack_intr_t
*ack_intr
)
72 memset(hw
, 0, sizeof(*hw
));
74 for (i
= 0; i
< 8; i
++)
75 hw
->io_ports_array
[i
] = base
+ i
* 4;
77 hw
->io_ports
.ctl_addr
= base
+ IDE_CONTROL
;
80 hw
->ack_intr
= ack_intr
;
83 static const char *mac_ide_name
[] =
84 { "Quadra", "Powerbook", "Powerbook Baboon" };
87 * Probe for a Macintosh IDE interface
90 static int __init
macide_init(void)
93 ide_ack_intr_t
*ack_intr
;
101 switch (macintosh_config
->ide_type
) {
104 ack_intr
= macide_ack_intr
;
109 ack_intr
= macide_ack_intr
;
121 printk(KERN_INFO
"ide: Macintosh %s IDE controller\n",
122 mac_ide_name
[macintosh_config
->ide_type
- 1]);
124 macide_setup_ports(&hw
, base
, irq
, ack_intr
);
126 hwif
= ide_find_port();
128 u8 index
= hwif
->index
;
129 u8 idx
[4] = { index
, 0xff, 0xff, 0xff };
131 ide_init_port_data(hwif
, index
);
132 ide_init_port_hw(hwif
, &hw
);
134 ide_device_add(idx
, NULL
);
140 module_init(macide_init
);
142 MODULE_LICENSE("GPL");