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Diffstat (limited to 'include/asm-mips/dec/interrupts.h')
| -rw-r--r-- | include/asm-mips/dec/interrupts.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/include/asm-mips/dec/interrupts.h b/include/asm-mips/dec/interrupts.h new file mode 100644 index 00000000000..273e4d65bfe --- /dev/null +++ b/include/asm-mips/dec/interrupts.h @@ -0,0 +1,125 @@ +/* + * Miscellaneous definitions used to initialise the interrupt vector table + * with the machine-specific interrupt routines. + * + * 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. + * + * Copyright (C) 1997 by Paul M. Antoine. + * reworked 1998 by Harald Koerfgen. + * Copyright (C) 2001, 2002, 2003 Maciej W. Rozycki + */ + +#ifndef __ASM_DEC_INTERRUPTS_H +#define __ASM_DEC_INTERRUPTS_H + +#include <asm/mipsregs.h> + + +/* + * The list of possible system devices which provide an + * interrupt. Not all devices exist on a given system. + */ +#define DEC_IRQ_CASCADE 0 /* cascade from CSR or I/O ASIC */ + +/* Ordinary interrupts */ +#define DEC_IRQ_AB_RECV 1 /* ACCESS.bus receive */ +#define DEC_IRQ_AB_XMIT 2 /* ACCESS.bus transmit */ +#define DEC_IRQ_DZ11 3 /* DZ11 (DC7085) serial */ +#define DEC_IRQ_ASC 4 /* ASC (NCR53C94) SCSI */ +#define DEC_IRQ_FLOPPY 5 /* 82077 FDC */ +#define DEC_IRQ_FPU 6 /* R3k FPU */ +#define DEC_IRQ_HALT 7 /* HALT button or from ACCESS.Bus */ +#define DEC_IRQ_ISDN 8 /* Am79C30A ISDN */ +#define DEC_IRQ_LANCE 9 /* LANCE (Am7990) Ethernet */ +#define DEC_IRQ_BUS 10 /* memory, I/O bus read/write errors */ +#define DEC_IRQ_PSU 11 /* power supply unit warning */ +#define DEC_IRQ_RTC 12 /* DS1287 RTC */ +#define DEC_IRQ_SCC0 13 /* SCC (Z85C30) serial #0 */ +#define DEC_IRQ_SCC1 14 /* SCC (Z85C30) serial #1 */ +#define DEC_IRQ_SII 15 /* SII (DC7061) SCSI */ +#define DEC_IRQ_TC0 16 /* TURBOchannel slot #0 */ +#define DEC_IRQ_TC1 17 /* TURBOchannel slot #1 */ +#define DEC_IRQ_TC2 18 /* TURBOchannel slot #2 */ +#define DEC_IRQ_TIMER 19 /* ARC periodic timer */ +#define DEC_IRQ_VIDEO 20 /* framebuffer */ + +/* I/O ASIC DMA interrupts */ +#define DEC_IRQ_ASC_MERR 21 /* ASC memory read error */ +#define DEC_IRQ_ASC_ERR 22 /* ASC page overrun */ +#define DEC_IRQ_ASC_DMA 23 /* ASC buffer pointer loaded */ +#define DEC_IRQ_FLOPPY_ERR 24 /* FDC error */ +#define DEC_IRQ_ISDN_ERR 25 /* ISDN memory read/overrun error */ +#define DEC_IRQ_ISDN_RXDMA 26 /* ISDN recv buffer pointer loaded */ +#define DEC_IRQ_ISDN_TXDMA 27 /* ISDN xmit buffer pointer loaded */ +#define DEC_IRQ_LANCE_MERR 28 /* LANCE memory read error */ +#define DEC_IRQ_SCC0A_RXERR 29 /* SCC0A (printer) receive overrun */ +#define DEC_IRQ_SCC0A_RXDMA 30 /* SCC0A receive half page */ +#define DEC_IRQ_SCC0A_TXERR 31 /* SCC0A xmit memory read/overrun */ +#define DEC_IRQ_SCC0A_TXDMA 32 /* SCC0A transmit page end */ +#define DEC_IRQ_AB_RXERR 33 /* ACCESS.bus receive overrun */ +#define DEC_IRQ_AB_RXDMA 34 /* ACCESS.bus receive half page */ +#define DEC_IRQ_AB_TXERR 35 /* ACCESS.bus xmit memory read/ovrn */ +#define DEC_IRQ_AB_TXDMA 36 /* ACCESS.bus transmit page end */ +#define DEC_IRQ_SCC1A_RXERR 37 /* SCC1A (modem) receive overrun */ +#define DEC_IRQ_SCC1A_RXDMA 38 /* SCC1A receive half page */ +#define DEC_IRQ_SCC1A_TXERR 39 /* SCC1A xmit memory read/overrun */ +#define DEC_IRQ_SCC1A_TXDMA 40 /* SCC1A transmit page end */ + +/* TC5 & TC6 are virtual slots for KN02's onboard devices */ +#define DEC_IRQ_TC5 DEC_IRQ_ASC /* virtual PMAZ-AA */ +#define DEC_IRQ_TC6 DEC_IRQ_LANCE /* virtual PMAD-AA */ + +#define DEC_NR_INTS 41 + + +/* Largest of cpu mask_nr tables. */ +#define DEC_MAX_CPU_INTS 6 +/* Largest of asic mask_nr tables. */ +#define DEC_MAX_ASIC_INTS 9 + + +/* + * CPU interrupt bits common to all systems. + */ +#define DEC_CPU_INR_FPU 7 /* R3k FPU */ +#define DEC_CPU_INR_SW1 1 /* software #1 */ +#define DEC_CPU_INR_SW0 0 /* software #0 */ + +#define DEC_CPU_IRQ_BASE 0 /* first IRQ assigned to CPU */ + +#define DEC_CPU_IRQ_NR(n) ((n) + DEC_CPU_IRQ_BASE) +#define DEC_CPU_IRQ_MASK(n) (1 << ((n) + CAUSEB_IP)) +#define DEC_CPU_IRQ_ALL (0xff << CAUSEB_IP) + + +#ifndef __ASSEMBLY__ + +/* + * Interrupt table structures to hide differences between systems. + */ +typedef union { int i; void *p; } int_ptr; +extern int dec_interrupt[DEC_NR_INTS]; +extern int_ptr cpu_mask_nr_tbl[DEC_MAX_CPU_INTS][2]; +extern int_ptr asic_mask_nr_tbl[DEC_MAX_ASIC_INTS][2]; +extern int cpu_fpu_mask; + + +/* + * Common interrupt routine prototypes for all DECStations + */ +extern void kn02_io_int(void); +extern void kn02xa_io_int(void); +extern void kn03_io_int(void); +extern void asic_dma_int(void); +extern void asic_all_int(void); +extern void kn02_all_int(void); +extern void cpu_all_int(void); + +extern void dec_intr_unimplemented(void); +extern void asic_intr_unimplemented(void); + +#endif /* __ASSEMBLY__ */ + +#endif |