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/*
* OSS
*
* This is used in place of VIA2 on the IIfx.
*/
#define OSS_BASE (0x50f1a000)
/*
* Interrupt level offsets for mac_oss->irq_level
*/
#define OSS_NUBUS0 0
#define OSS_NUBUS1 1
#define OSS_NUBUS2 2
#define OSS_NUBUS3 3
#define OSS_NUBUS4 4
#define OSS_NUBUS5 5
#define OSS_IOPISM 6
#define OSS_IOPSCC 7
#define OSS_SOUND 8
#define OSS_SCSI 9
#define OSS_60HZ 10
#define OSS_VIA1 11
#define OSS_UNUSED1 12
#define OSS_UNUSED2 13
#define OSS_PARITY 14
#define OSS_UNUSED3 15
#define OSS_NUM_SOURCES 16
/*
* Pending interrupt bits in mac_oss->irq_pending
*/
#define OSS_IP_NUBUS0 0x0001
#define OSS_IP_NUBUS1 0x0002
#define OSS_IP_NUBUS2 0x0004
#define OSS_IP_NUBUS3 0x0008
#define OSS_IP_NUBUS4 0x0010
#define OSS_IP_NUBUS5 0x0020
#define OSS_IP_IOPISM 0x0040
#define OSS_IP_IOPSCC 0x0080
#define OSS_IP_SOUND 0x0100
#define OSS_IP_SCSI 0x0200
#define OSS_IP_60HZ 0x0400
#define OSS_IP_VIA1 0x0800
#define OSS_IP_UNUSED1 0x1000
#define OSS_IP_UNUSED2 0x2000
#define OSS_IP_PARITY 0x4000
#define OSS_IP_UNUSED3 0x8000
#define OSS_IP_NUBUS (OSS_IP_NUBUS0|OSS_IP_NUBUS1|OSS_IP_NUBUS2|OSS_IP_NUBUS3|OSS_IP_NUBUS4|OSS_IP_NUBUS5)
/*
* Rom Control Register
*/
#define OSS_POWEROFF 0x80
/*
* OSS Interrupt levels for various sub-systems
*
* This mapping is layed out with two things in mind: first, we try to keep
* things on their own levels to avoid having to do double-dispatches. Second,
* the levels match as closely as possible the alternate IRQ mapping mode (aka
* "A/UX mode") available on some VIA machines.
*/
#define OSS_IRQLEV_DISABLED 0
#define OSS_IRQLEV_IOPISM 1 /* ADB? */
#define OSS_IRQLEV_SCSI IRQ_AUTO_2
#define OSS_IRQLEV_NUBUS IRQ_AUTO_3 /* keep this on its own level */
#define OSS_IRQLEV_IOPSCC IRQ_AUTO_4 /* matches VIA alternate mapping */
#define OSS_IRQLEV_SOUND IRQ_AUTO_5 /* matches VIA alternate mapping */
#define OSS_IRQLEV_60HZ 6 /* matches VIA alternate mapping */
#define OSS_IRQLEV_VIA1 IRQ_AUTO_6 /* matches VIA alternate mapping */
#define OSS_IRQLEV_PARITY 7 /* matches VIA alternate mapping */
#ifndef __ASSEMBLY__
struct mac_oss {
__u8 irq_level[0x10]; /* [0x000-0x00f] Interrupt levels */
__u8 padding0[0x1F2]; /* [0x010-0x201] IO space filler */
__u16 irq_pending; /* [0x202-0x203] pending interrupts bits */
__u8 rom_ctrl; /* [0x204-0x204] ROM cntl reg (for poweroff) */
__u8 padding1[0x2]; /* [0x205-0x206] currently unused by A/UX */
__u8 ack_60hz; /* [0x207-0x207] 60 Hz ack. */
};
extern volatile struct mac_oss *oss;
extern int oss_present;
#endif /* __ASSEMBLY__ */