1 /*
2 * linux/include/asm-sh/ide.h
3 *
4 * Copyright (C) 1994-1996 Linus Torvalds & authors
5 */
6
7 /*
8 * This file contains the i386 architecture specific IDE code.
9 * In future, SuperH code.
10 */
11
12 #ifndef __ASM_SH_IDE_H
13 #define __ASM_SH_IDE_H
14
15 #ifdef __KERNEL__
16
17 #include <linux/config.h>
18 #include <asm/machvec.h>
19
20 #ifndef MAX_HWIFS
21 /* Should never have less than 2, ide-pci.c(ide_match_hwif) requires it */
22 #define MAX_HWIFS 2
23 #endif
24
25 #define ide__sti() __sti()
26
27 static __inline__ int ide_default_irq_hp600(ide_ioreg_t base)
28 {
29 switch (base) {
30 case 0x01f0: return 77;
31 case 0x0170: return 77;
32 default:
33 return 0;
34 }
35 }
36
37 static __inline__ int ide_default_irq(ide_ioreg_t base)
38 {
39 if (MACH_HP600) {
40 return ide_default_irq_hp600(base);
41 }
42 switch (base) {
43 case 0x01f0: return 14;
44 case 0x0170: return 15;
45 default:
46 return 0;
47 }
48 }
49
50 static __inline__ ide_ioreg_t ide_default_io_base_hp600(int index)
51 {
52 switch (index) {
53 case 0:
54 return 0x01f0;
55 case 1:
56 return 0x0170;
57 default:
58 return 0;
59 }
60 }
61
62 static __inline__ ide_ioreg_t ide_default_io_base(int index)
63 {
64 if (MACH_HP600) {
65 return ide_default_io_base_hp600(index);
66 }
67 switch (index) {
68 case 0:
69 return 0x1f0;
70 case 1:
71 return 0x170;
72 default:
73 return 0;
74 }
75 }
76
77 static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq)
78 {
79 ide_ioreg_t reg = data_port;
80 int i;
81
82 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
83 hw->io_ports[i] = reg;
84 reg += 1;
85 }
86 if (ctrl_port) {
87 hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
88 } else {
89 hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206;
90 }
91 if (irq != NULL)
92 *irq = 0;
93 hw->io_ports[IDE_IRQ_OFFSET] = 0;
94 }
95
96 static __inline__ void ide_init_default_hwifs(void)
97 {
98 #ifndef CONFIG_BLK_DEV_IDEPCI
99 hw_regs_t hw;
100 int index;
101
102 for(index = 0; index < MAX_HWIFS; index++) {
103 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL);
104 hw.irq = ide_default_irq(ide_default_io_base(index));
105 ide_register_hw(&hw, NULL);
106 }
107 #endif /* CONFIG_BLK_DEV_IDEPCI */
108 }
109
110 typedef union {
111 unsigned all : 8; /* all of the bits together */
112 struct {
113 unsigned head : 4; /* always zeros here */
114 unsigned unit : 1; /* drive select number, 0 or 1 */
115 unsigned bit5 : 1; /* always 1 */
116 unsigned lba : 1; /* using LBA instead of CHS */
117 unsigned bit7 : 1; /* always 1 */
118 } b;
119 } select_t;
120
121 #define ide_request_irq(irq,hand,flg,dev,id) request_irq((irq),(hand),(flg),(dev),(id))
122 #define ide_free_irq(irq,dev_id) free_irq((irq), (dev_id))
123 #define ide_check_region(from,extent) check_region((from), (extent))
124 #define ide_request_region(from,extent,name) request_region((from), (extent), (name))
125 #define ide_release_region(from,extent) release_region((from), (extent))
126
127 /*
128 * The following are not needed for the non-m68k ports
129 */
130 #define ide_ack_intr(hwif) (1)
131 #define ide_fix_driveid(id) do {} while (0)
132 #define ide_release_lock(lock) do {} while (0)
133 #define ide_get_lock(lock, hdlr, data) do {} while (0)
134
135 #endif /* __KERNEL__ */
136
137 #endif /* __ASM_SH_IDE_H */
138
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