mac_oss.h

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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

#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;

extern void oss_register_interrupts(void);
extern void oss_irq_enable(int);
extern void oss_irq_disable(int);

#endif /* __ASSEMBLY__ */