| /* |
| * 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__ */ |
