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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * OSS
4 *
5 * This is used in place of VIA2 on the IIfx.
6 */
7
8#define OSS_BASE (0x50f1a000)
9
10/*
11 * Interrupt level offsets for mac_oss->irq_level
12 */
13
14#define OSS_NUBUS0 0
15#define OSS_NUBUS1 1
16#define OSS_NUBUS2 2
17#define OSS_NUBUS3 3
18#define OSS_NUBUS4 4
19#define OSS_NUBUS5 5
20#define OSS_IOPISM 6
21#define OSS_IOPSCC 7
22#define OSS_SOUND 8
23#define OSS_SCSI 9
24#define OSS_60HZ 10
25#define OSS_VIA1 11
26#define OSS_UNUSED1 12
27#define OSS_UNUSED2 13
28#define OSS_PARITY 14
29#define OSS_UNUSED3 15
30
31#define OSS_NUM_SOURCES 16
32
33/*
34 * Pending interrupt bits in mac_oss->irq_pending
35 */
36
37#define OSS_IP_NUBUS0 0x0001
38#define OSS_IP_NUBUS1 0x0002
39#define OSS_IP_NUBUS2 0x0004
40#define OSS_IP_NUBUS3 0x0008
41#define OSS_IP_NUBUS4 0x0010
42#define OSS_IP_NUBUS5 0x0020
43#define OSS_IP_IOPISM 0x0040
44#define OSS_IP_IOPSCC 0x0080
45#define OSS_IP_SOUND 0x0100
46#define OSS_IP_SCSI 0x0200
47#define OSS_IP_60HZ 0x0400
48#define OSS_IP_VIA1 0x0800
49#define OSS_IP_UNUSED1 0x1000
50#define OSS_IP_UNUSED2 0x2000
51#define OSS_IP_PARITY 0x4000
52#define OSS_IP_UNUSED3 0x8000
53
54#define OSS_IP_NUBUS (OSS_IP_NUBUS0|OSS_IP_NUBUS1|OSS_IP_NUBUS2|OSS_IP_NUBUS3|OSS_IP_NUBUS4|OSS_IP_NUBUS5)
55
56/*
57 * Rom Control Register
58 */
59
60#define OSS_POWEROFF 0x80
61
62#ifndef __ASSEMBLY__
63
64struct mac_oss {
65 __u8 irq_level[0x10]; /* [0x000-0x00f] Interrupt levels */
66 __u8 padding0[0x1F2]; /* [0x010-0x201] IO space filler */
67 __u16 irq_pending; /* [0x202-0x203] pending interrupts bits */
68 __u8 rom_ctrl; /* [0x204-0x204] ROM cntl reg (for poweroff) */
69 __u8 padding1[0x2]; /* [0x205-0x206] currently unused by A/UX */
70 __u8 ack_60hz; /* [0x207-0x207] 60 Hz ack. */
71};
72
73extern volatile struct mac_oss *oss;
74extern int oss_present;
75
76extern void oss_register_interrupts(void);
77extern void oss_irq_enable(int);
78extern void oss_irq_disable(int);
79
80#endif /* __ASSEMBLY__ */
1/*
2 * OSS
3 *
4 * This is used in place of VIA2 on the IIfx.
5 */
6
7#define OSS_BASE (0x50f1a000)
8
9/*
10 * Interrupt level offsets for mac_oss->irq_level
11 */
12
13#define OSS_NUBUS0 0
14#define OSS_NUBUS1 1
15#define OSS_NUBUS2 2
16#define OSS_NUBUS3 3
17#define OSS_NUBUS4 4
18#define OSS_NUBUS5 5
19#define OSS_IOPISM 6
20#define OSS_IOPSCC 7
21#define OSS_SOUND 8
22#define OSS_SCSI 9
23#define OSS_60HZ 10
24#define OSS_VIA1 11
25#define OSS_UNUSED1 12
26#define OSS_UNUSED2 13
27#define OSS_PARITY 14
28#define OSS_UNUSED3 15
29
30#define OSS_NUM_SOURCES 16
31
32/*
33 * Pending interrupt bits in mac_oss->irq_pending
34 */
35
36#define OSS_IP_NUBUS0 0x0001
37#define OSS_IP_NUBUS1 0x0002
38#define OSS_IP_NUBUS2 0x0004
39#define OSS_IP_NUBUS3 0x0008
40#define OSS_IP_NUBUS4 0x0010
41#define OSS_IP_NUBUS5 0x0020
42#define OSS_IP_IOPISM 0x0040
43#define OSS_IP_IOPSCC 0x0080
44#define OSS_IP_SOUND 0x0100
45#define OSS_IP_SCSI 0x0200
46#define OSS_IP_60HZ 0x0400
47#define OSS_IP_VIA1 0x0800
48#define OSS_IP_UNUSED1 0x1000
49#define OSS_IP_UNUSED2 0x2000
50#define OSS_IP_PARITY 0x4000
51#define OSS_IP_UNUSED3 0x8000
52
53#define OSS_IP_NUBUS (OSS_IP_NUBUS0|OSS_IP_NUBUS1|OSS_IP_NUBUS2|OSS_IP_NUBUS3|OSS_IP_NUBUS4|OSS_IP_NUBUS5)
54
55/*
56 * Rom Control Register
57 */
58
59#define OSS_POWEROFF 0x80
60
61/*
62 * OSS Interrupt levels for various sub-systems
63 *
64 * This mapping is laid out with two things in mind: first, we try to keep
65 * things on their own levels to avoid having to do double-dispatches. Second,
66 * the levels match as closely as possible the alternate IRQ mapping mode (aka
67 * "A/UX mode") available on some VIA machines.
68 */
69
70#define OSS_IRQLEV_DISABLED 0
71#define OSS_IRQLEV_IOPISM 1 /* ADB? */
72#define OSS_IRQLEV_SCSI IRQ_AUTO_2
73#define OSS_IRQLEV_NUBUS IRQ_AUTO_3 /* keep this on its own level */
74#define OSS_IRQLEV_IOPSCC IRQ_AUTO_4 /* matches VIA alternate mapping */
75#define OSS_IRQLEV_SOUND IRQ_AUTO_5 /* matches VIA alternate mapping */
76#define OSS_IRQLEV_60HZ 6 /* matches VIA alternate mapping */
77#define OSS_IRQLEV_VIA1 IRQ_AUTO_6 /* matches VIA alternate mapping */
78#define OSS_IRQLEV_PARITY 7 /* matches VIA alternate mapping */
79
80#ifndef __ASSEMBLY__
81
82struct mac_oss {
83 __u8 irq_level[0x10]; /* [0x000-0x00f] Interrupt levels */
84 __u8 padding0[0x1F2]; /* [0x010-0x201] IO space filler */
85 __u16 irq_pending; /* [0x202-0x203] pending interrupts bits */
86 __u8 rom_ctrl; /* [0x204-0x204] ROM cntl reg (for poweroff) */
87 __u8 padding1[0x2]; /* [0x205-0x206] currently unused by A/UX */
88 __u8 ack_60hz; /* [0x207-0x207] 60 Hz ack. */
89};
90
91extern volatile struct mac_oss *oss;
92extern int oss_present;
93
94#endif /* __ASSEMBLY__ */