1 /*
2 * linux/include/asm-alpha/ide.h
3 *
4 * Copyright (C) 1994-1996 Linus Torvalds & authors
5 */
6
7 /*
8 * This file contains the alpha architecture specific IDE code.
9 */
10
11 #ifndef __ASMalpha_IDE_H
12 #define __ASMalpha_IDE_H
13
14 #ifdef __KERNEL__
15
16 #include <linux/config.h>
17
18 #ifndef MAX_HWIFS
19 #define MAX_HWIFS 4
20 #endif
21
22 #define ide__sti() __sti()
23
24 static __inline__ int ide_default_irq(ide_ioreg_t base)
25 {
26 switch (base) {
27 case 0x1f0: return 14;
28 case 0x170: return 15;
29 case 0x1e8: return 11;
30 case 0x168: return 10;
31 default:
32 return 0;
33 }
34 }
35
36 static __inline__ ide_ioreg_t ide_default_io_base(int index)
37 {
38 switch (index) {
39 case 0: return 0x1f0;
40 case 1: return 0x170;
41 case 2: return 0x1e8;
42 case 3: return 0x168;
43 default:
44 return 0;
45 }
46 }
47
48 static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq)
49 {
50 ide_ioreg_t reg = data_port;
51 int i;
52
53 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
54 hw->io_ports[i] = reg;
55 reg += 1;
56 }
57 if (ctrl_port) {
58 hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
59 } else {
60 hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206;
61 }
62 if (irq != NULL)
63 *irq = 0;
64 hw->io_ports[IDE_IRQ_OFFSET] = 0;
65 }
66
67 /*
68 * This registers the standard ports for this architecture with the IDE
69 * driver.
70 */
71 static __inline__ void ide_init_default_hwifs(void)
72 {
73 #ifndef CONFIG_BLK_DEV_IDEPCI
74 hw_regs_t hw;
75 int index;
76
77 for (index = 0; index < MAX_HWIFS; index++) {
78 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL);
79 hw.irq = ide_default_irq(ide_default_io_base(index));
80 ide_register_hw(&hw, NULL);
81 }
82 #endif /* CONFIG_BLK_DEV_IDEPCI */
83 }
84
85 typedef union {
86 unsigned all : 8; /* all of the bits together */
87 struct {
88 unsigned head : 4; /* always zeros here */
89 unsigned unit : 1; /* drive select number, 0 or 1 */
90 unsigned bit5 : 1; /* always 1 */
91 unsigned lba : 1; /* using LBA instead of CHS */
92 unsigned bit7 : 1; /* always 1 */
93 } b;
94 } select_t;
95
96 #define ide_request_irq(irq,hand,flg,dev,id) request_irq((irq),(hand),(flg),(dev),(id))
97 #define ide_free_irq(irq,dev_id) free_irq((irq), (dev_id))
98 #define ide_check_region(from,extent) check_region((from), (extent))
99 #define ide_request_region(from,extent,name) request_region((from), (extent), (name))
100 #define ide_release_region(from,extent) release_region((from), (extent))
101
102 /*
103 * The following are not needed for the non-m68k ports
104 */
105 #define ide_ack_intr(hwif) (1)
106 #define ide_fix_driveid(id) do {} while (0)
107 #define ide_release_lock(lock) do {} while (0)
108 #define ide_get_lock(lock, hdlr, data) do {} while (0)
109
110 #endif /* __KERNEL__ */
111
112 #endif /* __ASMalpha_IDE_H */
113
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