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
64 struct 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
73 extern volatile struct mac_oss *oss;
74 extern int oss_present;
75
76 extern void oss_register_interrupts(void);
77 extern void oss_irq_enable(int);
78 extern void oss_irq_disable(int);
79
80 #endif /* __ASSEMBLY__ */
81
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