xref: /openbmc/linux/arch/m68k/include/asm/mac_oss.h (revision b2441318)
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