1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * OSS 4 * 5 * This is used in place of VIA2 on the IIfx. 6 */ 7 8 #define OSS_BASE (0x50f1a000) 9 10 /* 11 * Interrupt level offsets for mac_oss->irq_level 12 */ 13 14 #define OSS_NUBUS0 0 15 #define OSS_NUBUS1 1 16 #define OSS_NUBUS2 2 17 #define OSS_NUBUS3 3 18 #define OSS_NUBUS4 4 19 #define OSS_NUBUS5 5 20 #define OSS_IOPISM 6 21 #define OSS_IOPSCC 7 22 #define OSS_SOUND 8 23 #define OSS_SCSI 9 24 #define OSS_60HZ 10 25 #define OSS_VIA1 11 26 #define OSS_UNUSED1 12 27 #define OSS_UNUSED2 13 28 #define OSS_PARITY 14 29 #define OSS_UNUSED3 15 30 31 #define OSS_NUM_SOURCES 16 32 33 /* 34 * Pending interrupt bits in mac_oss->irq_pending 35 */ 36 37 #define OSS_IP_NUBUS0 0x0001 38 #define OSS_IP_NUBUS1 0x0002 39 #define OSS_IP_NUBUS2 0x0004 40 #define OSS_IP_NUBUS3 0x0008 41 #define OSS_IP_NUBUS4 0x0010 42 #define OSS_IP_NUBUS5 0x0020 43 #define OSS_IP_IOPISM 0x0040 44 #define OSS_IP_IOPSCC 0x0080 45 #define OSS_IP_SOUND 0x0100 46 #define OSS_IP_SCSI 0x0200 47 #define OSS_IP_60HZ 0x0400 48 #define OSS_IP_VIA1 0x0800 49 #define OSS_IP_UNUSED1 0x1000 50 #define OSS_IP_UNUSED2 0x2000 51 #define OSS_IP_PARITY 0x4000 52 #define OSS_IP_UNUSED3 0x8000 53 54 #define OSS_IP_NUBUS (OSS_IP_NUBUS0|OSS_IP_NUBUS1|OSS_IP_NUBUS2|OSS_IP_NUBUS3|OSS_IP_NUBUS4|OSS_IP_NUBUS5) 55 56 /* 57 * Rom Control Register 58 */ 59 60 #define OSS_POWEROFF 0x80 61 62 #ifndef __ASSEMBLY__ 63 64 struct mac_oss { 65 __u8 irq_level[0x10]; /* [0x000-0x00f] Interrupt levels */ 66 __u8 padding0[0x1F2]; /* [0x010-0x201] IO space filler */ 67 __u16 irq_pending; /* [0x202-0x203] pending interrupts bits */ 68 __u8 rom_ctrl; /* [0x204-0x204] ROM cntl reg (for poweroff) */ 69 __u8 padding1[0x2]; /* [0x205-0x206] currently unused by A/UX */ 70 __u8 ack_60hz; /* [0x207-0x207] 60 Hz ack. */ 71 }; 72 73 extern volatile struct mac_oss *oss; 74 extern int oss_present; 75 76 extern void oss_register_interrupts(void); 77 extern void oss_irq_enable(int); 78 extern void oss_irq_disable(int); 79 80 #endif /* __ASSEMBLY__ */ 81