Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 layed 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 2 | |
73 | #define OSS_IRQLEV_NUBUS 3 /* keep this on its own level */ | |
74 | #define OSS_IRQLEV_IOPSCC 4 /* matches VIA alternate mapping */ | |
75 | #define OSS_IRQLEV_SOUND 5 /* matches VIA alternate mapping */ | |
76 | #define OSS_IRQLEV_60HZ 6 /* matches VIA alternate mapping */ | |
77 | #define OSS_IRQLEV_VIA1 6 /* matches VIA alternate mapping */ | |
78 | #define OSS_IRQLEV_PARITY 7 /* matches VIA alternate mapping */ | |
79 | ||
80 | #ifndef __ASSEMBLY__ | |
81 | ||
82 | struct 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 | ||
91 | extern volatile struct mac_oss *oss; | |
92 | extern int oss_present; | |
93 | ||
94 | #endif /* __ASSEMBLY__ */ |