diff options
Diffstat (limited to 'arch/m68k/include/asm/mac_oss.h')
| -rw-r--r-- | arch/m68k/include/asm/mac_oss.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/mac_oss.h b/arch/m68k/include/asm/mac_oss.h new file mode 100644 index 000000000000..7221f7251934 --- /dev/null +++ b/arch/m68k/include/asm/mac_oss.h @@ -0,0 +1,94 @@ +/* + * 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__ */ |