| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * OSS |
| 3 | * |
| 4 | * This is used in place of VIA2 on the IIfx. |
| 5 | */ |
| 6 | |
| 7 | #define OSS_BASE (0x50f1a000) |
| 8 | |
| 9 | /* |
| 10 | * Interrupt level offsets for mac_oss->irq_level |
| 11 | */ |
| 12 | |
| 13 | #define OSS_NUBUS0 0 |
| 14 | #define OSS_NUBUS1 1 |
| 15 | #define OSS_NUBUS2 2 |
| 16 | #define OSS_NUBUS3 3 |
| 17 | #define OSS_NUBUS4 4 |
| 18 | #define OSS_NUBUS5 5 |
| 19 | #define OSS_IOPISM 6 |
| 20 | #define OSS_IOPSCC 7 |
| 21 | #define OSS_SOUND 8 |
| 22 | #define OSS_SCSI 9 |
| 23 | #define OSS_60HZ 10 |
| 24 | #define OSS_VIA1 11 |
| 25 | #define OSS_UNUSED1 12 |
| 26 | #define OSS_UNUSED2 13 |
| 27 | #define OSS_PARITY 14 |
| 28 | #define OSS_UNUSED3 15 |
| 29 | |
| 30 | #define OSS_NUM_SOURCES 16 |
| 31 | |
| 32 | /* |
| 33 | * Pending interrupt bits in mac_oss->irq_pending |
| 34 | */ |
| 35 | |
| 36 | #define OSS_IP_NUBUS0 0x0001 |
| 37 | #define OSS_IP_NUBUS1 0x0002 |
| 38 | #define OSS_IP_NUBUS2 0x0004 |
| 39 | #define OSS_IP_NUBUS3 0x0008 |
| 40 | #define OSS_IP_NUBUS4 0x0010 |
| 41 | #define OSS_IP_NUBUS5 0x0020 |
| 42 | #define OSS_IP_IOPISM 0x0040 |
| 43 | #define OSS_IP_IOPSCC 0x0080 |
| 44 | #define OSS_IP_SOUND 0x0100 |
| 45 | #define OSS_IP_SCSI 0x0200 |
| 46 | #define OSS_IP_60HZ 0x0400 |
| 47 | #define OSS_IP_VIA1 0x0800 |
| 48 | #define OSS_IP_UNUSED1 0x1000 |
| 49 | #define OSS_IP_UNUSED2 0x2000 |
| 50 | #define OSS_IP_PARITY 0x4000 |
| 51 | #define OSS_IP_UNUSED3 0x8000 |
| 52 | |
| 53 | #define OSS_IP_NUBUS (OSS_IP_NUBUS0|OSS_IP_NUBUS1|OSS_IP_NUBUS2|OSS_IP_NUBUS3|OSS_IP_NUBUS4|OSS_IP_NUBUS5) |
| 54 | |
| 55 | /* |
| 56 | * Rom Control Register |
| 57 | */ |
| 58 | |
| 59 | #define OSS_POWEROFF 0x80 |
| 60 | |
| 61 | /* |
| 62 | * OSS Interrupt levels for various sub-systems |
| 63 | * |
| 64 | * This mapping is layed out with two things in mind: first, we try to keep |
| 65 | * things on their own levels to avoid having to do double-dispatches. Second, |
| 66 | * the levels match as closely as possible the alternate IRQ mapping mode (aka |
| 67 | * "A/UX mode") available on some VIA machines. |
| 68 | */ |
| 69 | |
| 70 | #define OSS_IRQLEV_DISABLED 0 |
| 71 | #define OSS_IRQLEV_IOPISM 1 /* ADB? */ |
| 72 | #define OSS_IRQLEV_SCSI 2 |
| 73 | #define OSS_IRQLEV_NUBUS 3 /* keep this on its own level */ |
| 74 | #define OSS_IRQLEV_IOPSCC 4 /* matches VIA alternate mapping */ |
| 75 | #define OSS_IRQLEV_SOUND 5 /* matches VIA alternate mapping */ |
| 76 | #define OSS_IRQLEV_60HZ 6 /* matches VIA alternate mapping */ |
| 77 | #define OSS_IRQLEV_VIA1 6 /* matches VIA alternate mapping */ |
| 78 | #define OSS_IRQLEV_PARITY 7 /* matches VIA alternate mapping */ |
| 79 | |
| 80 | #ifndef __ASSEMBLY__ |
| 81 | |
| 82 | struct mac_oss { |
| 83 | __u8 irq_level[0x10]; /* [0x000-0x00f] Interrupt levels */ |
| 84 | __u8 padding0[0x1F2]; /* [0x010-0x201] IO space filler */ |
| 85 | __u16 irq_pending; /* [0x202-0x203] pending interrupts bits */ |
| 86 | __u8 rom_ctrl; /* [0x204-0x204] ROM cntl reg (for poweroff) */ |
| 87 | __u8 padding1[0x2]; /* [0x205-0x206] currently unused by A/UX */ |
| 88 | __u8 ack_60hz; /* [0x207-0x207] 60 Hz ack. */ |
| 89 | }; |
| 90 | |
| 91 | extern volatile struct mac_oss *oss; |
| 92 | extern int oss_present; |
| 93 | |
| 94 | #endif /* __ASSEMBLY__ */ |