- /*
- ** 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 <asm/irq.h>
- /* Setting this prints debugging info for unclaimed interrupts */
- #define DEBUG_SPURIOUS
- /* Setting this prints debugging info on each autovector interrupt */
- /* #define DEBUG_IRQS */
- /* Setting this prints debugging info on each Nubus interrupt */
- /* #define DEBUG_NUBUS_INT */
- /* Setting this prints debugging info on irqs as they enabled and disabled. */
- /* #define DEBUG_IRQUSE */
- /*
- * Base IRQ number for all Mac68K interrupt sources. Each source
- * has eight indexes (base -> base+7).
- */
- #define VIA1_SOURCE_BASE 8
- #define VIA2_SOURCE_BASE 16
- #define MAC_SCC_SOURCE_BASE 24
- #define PSC3_SOURCE_BASE 24
- #define PSC4_SOURCE_BASE 32
- #define PSC5_SOURCE_BASE 40
- #define PSC6_SOURCE_BASE 48
- #define NUBUS_SOURCE_BASE 56
- #define BABOON_SOURCE_BASE 64
- /*
- * Maximum IRQ number is BABOON_SOURCE_BASE + 7,
- * giving us IRQs up through 71
- */
- #define NUM_MAC_SOURCES 72
- /*
- * clean way to separate IRQ into its source and index
- */
- #define IRQ_SRC(irq) (irq >> 3)
- #define IRQ_IDX(irq) (irq & 7)
- #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/RBV 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)
- /* 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_SCCA (33)
- #define IRQ_SCCB (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_9 (56)
- #define IRQ_NUBUS_A (57)
- #define IRQ_NUBUS_B (58)
- #define IRQ_NUBUS_C (59)
- #define IRQ_NUBUS_D (60)
- #define IRQ_NUBUS_E (61)
- #define IRQ_NUBUS_F (62)
- /* Baboon interrupts (cascaded to nubus slot $C) */
- #define IRQ_BABOON_0 (64)
- #define IRQ_BABOON_1 (65)
- #define IRQ_BABOON_2 (66)
- #define IRQ_BABOON_3 (67)
- #define SLOT2IRQ(x) (x + 47)
- #define IRQ2SLOT(x) (x - 47)
- #define INT_CLK 24576 /* CLK while int_clk =2.456MHz and divide = 100 */
- #define INT_TICKS 246 /* to make sched_time = 99.902... HZ */
- extern irq_node_t *mac_irq_list[NUM_MAC_SOURCES];
- extern void mac_do_irq_list(int irq, struct pt_regs *);
- #endif /* asm/macints.h */