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
|
/*
* linux/include/asm-i386/ide.h
*
* Copyright (C) 1994-1996 Linus Torvalds & authors
*/
/*
* This file contains the i386 architecture specific IDE code.
*/
#ifndef __ASMi386_IDE_H
#define __ASMi386_IDE_H
#ifdef __KERNEL__
#include <linux/config.h>
#ifndef MAX_HWIFS
# ifdef CONFIG_BLK_DEV_IDEPCI
#define MAX_HWIFS 10
# else
#define MAX_HWIFS 6
# endif
#endif
#define ide__sti() __sti()
static __inline__ int ide_default_irq(ide_ioreg_t base)
{
switch (base) {
case 0x1f0: return 14;
case 0x170: return 15;
case 0x1e8: return 11;
case 0x168: return 10;
case 0x1e0: return 8;
case 0x160: return 12;
default:
return 0;
}
}
static __inline__ ide_ioreg_t ide_default_io_base(int index)
{
switch (index) {
case 0: return 0x1f0;
case 1: return 0x170;
case 2: return 0x1e8;
case 3: return 0x168;
case 4: return 0x1e0;
case 5: return 0x160;
default:
return 0;
}
}
static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq)
{
ide_ioreg_t reg = data_port;
int i;
for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
hw->io_ports[i] = reg;
reg += 1;
}
if (ctrl_port) {
hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
} else {
hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206;
}
if (irq != NULL)
*irq = 0;
hw->io_ports[IDE_IRQ_OFFSET] = 0;
}
static __inline__ void ide_init_default_hwifs(void)
{
#ifndef CONFIG_BLK_DEV_IDEPCI
hw_regs_t hw;
int index;
for(index = 0; index < MAX_HWIFS; index++) {
ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL);
hw.irq = ide_default_irq(ide_default_io_base(index));
ide_register_hw(&hw, NULL);
}
#endif /* CONFIG_BLK_DEV_IDEPCI */
}
typedef union {
unsigned all : 8; /* all of the bits together */
struct {
unsigned head : 4; /* always zeros here */
unsigned unit : 1; /* drive select number, 0 or 1 */
unsigned bit5 : 1; /* always 1 */
unsigned lba : 1; /* using LBA instead of CHS */
unsigned bit7 : 1; /* always 1 */
} b;
} select_t;
#define ide_request_irq(irq,hand,flg,dev,id) request_irq((irq),(hand),(flg),(dev),(id))
#define ide_free_irq(irq,dev_id) free_irq((irq), (dev_id))
#define ide_check_region(from,extent) check_region((from), (extent))
#define ide_request_region(from,extent,name) request_region((from), (extent), (name))
#define ide_release_region(from,extent) release_region((from), (extent))
/*
* The following are not needed for the non-m68k ports
*/
#define ide_ack_intr(hwif) (1)
#define ide_fix_driveid(id) do {} while (0)
#define ide_release_lock(lock) do {} while (0)
#define ide_get_lock(lock, hdlr, data) do {} while (0)
#endif /* __KERNEL__ */
#endif /* __ASMi386_IDE_H */
|
