1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* Macintosh IDE Driver
*
* Copyright (C) 1998 by Michael Schmitz
*
* This driver was written based on information obtained from the MacOS IDE
* driver binary by Mikael Forselius
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/blkdev.h>
#include <linux/hdreg.h>
#include <linux/delay.h>
#include <linux/ide.h>
#include <asm/machw.h>
#include <asm/macintosh.h>
#include <asm/macints.h>
#include <asm/mac_baboon.h>
#define IDE_BASE 0x50F1A000 /* Base address of IDE controller */
/*
* Generic IDE registers as offsets from the base
* These match MkLinux so they should be correct.
*/
#define IDE_CONTROL 0x38 /* control/altstatus */
/*
* Mac-specific registers
*/
/*
* this register is odd; it doesn't seem to do much and it's
* not word-aligned like virtually every other hardware register
* on the Mac...
*/
#define IDE_IFR 0x101 /* (0x101) IDE interrupt flags on Quadra:
*
* Bit 0+1: some interrupt flags
* Bit 2+3: some interrupt enable
* Bit 4: ??
* Bit 5: IDE interrupt flag (any hwif)
* Bit 6: maybe IDE interrupt enable (any hwif) ??
* Bit 7: Any interrupt condition
*/
volatile unsigned char *ide_ifr = (unsigned char *) (IDE_BASE + IDE_IFR);
int macide_ack_intr(ide_hwif_t* hwif)
{
if (*ide_ifr & 0x20) {
*ide_ifr &= ~0x20;
return 1;
}
return 0;
}
static void __init macide_setup_ports(hw_regs_t *hw, unsigned long base,
int irq, ide_ack_intr_t *ack_intr)
{
int i;
memset(hw, 0, sizeof(*hw));
for (i = 0; i < 8; i++)
hw->io_ports[i] = base + i * 4;
hw->io_ports[IDE_CONTROL_OFFSET] = base + IDE_CONTROL;
hw->irq = irq;
hw->ack_intr = ack_intr;
}
static const char *mac_ide_name[] =
{ "Quadra", "Powerbook", "Powerbook Baboon" };
/*
* Probe for a Macintosh IDE interface
*/
static int __init macide_init(void)
{
ide_hwif_t *hwif;
ide_ack_intr_t *ack_intr;
unsigned long base;
int irq;
hw_regs_t hw;
switch (macintosh_config->ide_type) {
case MAC_IDE_QUADRA:
base = IDE_BASE;
ack_intr = macide_ack_intr;
irq = IRQ_NUBUS_F;
break;
case MAC_IDE_PB:
base = IDE_BASE;
ack_intr = macide_ack_intr;
irq = IRQ_NUBUS_C;
break;
case MAC_IDE_BABOON:
base = BABOON_BASE;
ack_intr = NULL;
irq = IRQ_BABOON_1;
break;
default:
return -ENODEV;
}
printk(KERN_INFO "ide: Macintosh %s IDE controller\n",
mac_ide_name[macintosh_config->ide_type - 1]);
macide_setup_ports(&hw, base, irq, ack_intr);
hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
if (hwif) {
u8 index = hwif->index;
u8 idx[4] = { index, 0xff, 0xff, 0xff };
ide_init_port_data(hwif, index);
ide_init_port_hw(hwif, &hw);
hwif->mmio = 1;
ide_device_add(idx, NULL);
}
return 0;
}
module_init(macide_init);
|
