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 64struct 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 73extern volatile struct mac_oss *oss; 74extern int oss_present; 75 76extern void oss_register_interrupts(void); 77extern void oss_irq_enable(int); 78extern void oss_irq_disable(int); 79 80#endif /* __ASSEMBLY__ */ 81