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/arch/m68k/include/asm/mac_oss.h

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C++ Header | 94 lines | 57 code | 15 blank | 22 comment | 0 complexity | b83b68173817df9f56a85eae7a5de36b MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 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		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__ */