/* ** macints.h -- Macintosh Linux interrupt handling structs and prototypes ** ** Copyright 1997 by Michael Schmitz ** ** This file is subject to the terms and conditions of the GNU General Public ** License. See the file COPYING in the main directory of this archive ** for more details. ** */ #ifndef _ASM_MACINTS_H_ #define _ASM_MACINTS_H_ #include /* ** Macintosh Interrupt sources. ** ** Note: these are all routed via the generic VIA interrupt routine! ** */ #define SRC_VIA1 0 #define SRC_VIA2 1 #define VIA1_SOURCE_BASE 8 #define VIA2_SOURCE_BASE 16 #define RBV_SOURCE_BASE 24 #define MAC_SCC_SOURCE_BASE 32 #define NUBUS_SOURCE_BASE 56 #define NUBUS_MAX_SOURCES 8 /* FIXME: sources not contigous ... */ #define NUM_MAC_SOURCES (NUBUS_SOURCE_BASE+NUBUS_MAX_SOURCES-VIA1_SOURCE_BASE) #define IRQ_SRC_MASK (VIA1_SOURCE_BASE|VIA2_SOURCE_BASE|MAC_SCC_SOURCE_BASE) #define IRQ_IDX_MASK 7 /* * quick hack to adapt old MACHSPEC-aware source */ #define IRQ_IDX(irq) (irq) /* interrupt service types */ #define IRQ_TYPE_SLOW 0 #define IRQ_TYPE_FAST 1 #define IRQ_TYPE_PRIO 2 #define IRQ_SPURIOUS (0) /* auto-vector interrupts */ #define IRQ_AUTO_1 (1) #define IRQ_AUTO_2 (2) #define IRQ_AUTO_3 (3) #define IRQ_AUTO_4 (4) #define IRQ_AUTO_5 (5) #define IRQ_AUTO_6 (6) #define IRQ_AUTO_7 (7) /* VIA1 interrupts */ #define IRQ_VIA1_0 (8) /* one second int. */ #define IRQ_VIA1_1 (9) /* VBlank int. */ #define IRQ_MAC_VBL IRQ_VIA1_1 #define IRQ_VIA1_2 (10) /* ADB SR shifts complete */ #define IRQ_MAC_ADB IRQ_VIA1_2 #define IRQ_MAC_ADB_SR IRQ_VIA1_2 #define IRQ_VIA1_3 (11) /* ADB SR CB2 ?? */ #define IRQ_MAC_ADB_SD IRQ_VIA1_3 #define IRQ_VIA1_4 (12) /* ADB SR ext. clock pulse */ #define IRQ_MAC_ADB_CL IRQ_VIA1_4 #define IRQ_VIA1_5 (13) #define IRQ_MAC_TIMER_2 IRQ_VIA1_5 #define IRQ_VIA1_6 (14) #define IRQ_MAC_TIMER_1 IRQ_VIA1_6 #define IRQ_VIA1_7 (15) /* VIA2 interrupts */ #define IRQ_VIA2_0 (16) #define IRQ_MAC_SCSIDRQ IRQ_VIA2_0 #define IRQ_VIA2_1 (17) #define IRQ_MAC_NUBUS IRQ_VIA2_1 #define IRQ_VIA2_2 (18) #define IRQ_VIA2_3 (19) #define IRQ_MAC_SCSI IRQ_VIA2_3 #define IRQ_VIA2_4 (20) #define IRQ_VIA2_5 (21) #define IRQ_VIA2_6 (22) #define IRQ_VIA2_7 (23) #if 0 /* RBV interrupts */ #define IRQ_RBV_0 (24) #define IRQ_RBV_1 (25) #define IRQ_RBV_2 (26) #define IRQ_RBV_3 (27) #define IRQ_RBV_4 (28) #define IRQ_RBV_5 (29) #define IRQ_RBV_6 (30) #define IRQ_RBV_7 (31) #endif /* Level 3 (PSC, AV Macs only) interrupts */ #define IRQ_PSC3_0 (24) #define IRQ_MAC_MACE IRQ_PSC3_0 #define IRQ_PSC3_1 (25) #define IRQ_PSC3_2 (26) #define IRQ_PSC3_3 (27) /* Level 4 (SCC) interrupts */ #define IRQ_SCC (32) #define IRQ_SCCB (33) #define IRQ_SCCA (34) #if 0 /* FIXME: are there multiple interrupt conditions on the SCC ?? */ /* SCC interrupts */ #define IRQ_SCCB_TX (32) #define IRQ_SCCB_STAT (33) #define IRQ_SCCB_RX (34) #define IRQ_SCCB_SPCOND (35) #define IRQ_SCCA_TX (36) #define IRQ_SCCA_STAT (37) #define IRQ_SCCA_RX (38) #define IRQ_SCCA_SPCOND (39) #endif /* Level 4 (PSC, AV Macs only) interrupts */ #define IRQ_PSC4_0 (32) #define IRQ_PSC4_1 (33) #define IRQ_PSC4_2 (34) #define IRQ_PSC4_3 (35) #define IRQ_MAC_MACE_DMA IRQ_PSC4_3 /* Level 5 (PSC, AV Macs only) interrupts */ #define IRQ_PSC5_0 (40) #define IRQ_PSC5_1 (41) #define IRQ_PSC5_2 (42) #define IRQ_PSC5_3 (43) /* Level 6 (PSC, AV Macs only) interrupts */ #define IRQ_PSC6_0 (48) #define IRQ_PSC6_1 (49) #define IRQ_PSC6_2 (50) #define IRQ_PSC6_3 (51) /* Nubus interrupts (cascaded to VIA2) */ #define IRQ_NUBUS_1 (56) #define INT_CLK 24576 /* CLK while int_clk =2.456MHz and divide = 100 */ #define INT_TICKS 246 /* to make sched_time = 99.902... HZ */ #define VIA_ENABLE 0 #define VIA_PENDING 1 #define VIA_SERVICE 2 #define VIA_MASK 3 /* * Utility functions for setting/clearing bits in the interrupt registers of * the VIA. */ void mac_enable_irq( unsigned irq ); void mac_disable_irq( unsigned irq ); void mac_turnon_irq( unsigned irq ); void mac_turnoff_irq( unsigned irq ); void mac_clear_pending_irq( unsigned irq ); int mac_irq_pending( unsigned irq ); int nubus_request_irq(int slot, void *dev_id, void (*handler)(int,void *,struct pt_regs *)); int nubus_free_irq(int slot); unsigned long mac_register_nubus_int( void ); void mac_unregister_nubus_int( unsigned long ); extern void mac_default_handler(int irq, void *dev_id, struct pt_regs *regs); extern void via1_irq(int irq, void *dev_id, struct pt_regs *regs); extern void via2_irq(int irq, void *dev_id, struct pt_regs *regs); extern void rbv_irq(int irq, void *dev_id, struct pt_regs *regs); extern void mac_bang(int irq, void *dev_id, struct pt_regs *regs); extern void mac_SCC_handler(int irq, void *dev_id, struct pt_regs *regs); #endif /* asm/macints.h */