arch/mips/include/asm/dec/ioasic_ints.h
Source file repositories/reference/linux-study-clean/arch/mips/include/asm/dec/ioasic_ints.h
File Facts
- System
- Linux kernel
- Corpus path
arch/mips/include/asm/dec/ioasic_ints.h- Extension
.h- Size
- 2753 bytes
- Lines
- 75
- Domain
- Architecture Layer
- Bucket
- arch/mips
- Inferred role
- Architecture Layer: implementation source
- Status
- source implementation candidate
Why This File Exists
CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
#ifndef __ASM_DEC_IOASIC_INTS_H
#define __ASM_DEC_IOASIC_INTS_H
/*
* The upper 16 bits are a part of the I/O ASIC's internal DMA engine
* and thus are common to all I/O ASIC machines. The exception is
* the Maxine, which makes use of the FLOPPY and ISDN bits (otherwise
* unused) and has a different SCC wiring.
*/
/* all systems */
#define IO_INR_SCC0A_TXDMA 31 /* SCC0A transmit page end */
#define IO_INR_SCC0A_TXERR 30 /* SCC0A transmit memory read error */
#define IO_INR_SCC0A_RXDMA 29 /* SCC0A receive half page */
#define IO_INR_SCC0A_RXERR 28 /* SCC0A receive overrun */
#define IO_INR_ASC_DMA 19 /* ASC buffer pointer loaded */
#define IO_INR_ASC_ERR 18 /* ASC page overrun */
#define IO_INR_ASC_MERR 17 /* ASC memory read error */
#define IO_INR_LANCE_MERR 16 /* LANCE memory read error */
/* except Maxine */
#define IO_INR_SCC1A_TXDMA 27 /* SCC1A transmit page end */
#define IO_INR_SCC1A_TXERR 26 /* SCC1A transmit memory read error */
#define IO_INR_SCC1A_RXDMA 25 /* SCC1A receive half page */
#define IO_INR_SCC1A_RXERR 24 /* SCC1A receive overrun */
#define IO_INR_RES_23 23 /* unused */
#define IO_INR_RES_22 22 /* unused */
#define IO_INR_RES_21 21 /* unused */
#define IO_INR_RES_20 20 /* unused */
/* Maxine */
#define IO_INR_AB_TXDMA 27 /* ACCESS.bus transmit page end */
#define IO_INR_AB_TXERR 26 /* ACCESS.bus xmit memory read error */
#define IO_INR_AB_RXDMA 25 /* ACCESS.bus receive half page */
#define IO_INR_AB_RXERR 24 /* ACCESS.bus receive overrun */
#define IO_INR_FLOPPY_ERR 23 /* FDC error */
#define IO_INR_ISDN_TXDMA 22 /* ISDN xmit buffer pointer loaded */
#define IO_INR_ISDN_RXDMA 21 /* ISDN recv buffer pointer loaded */
#define IO_INR_ISDN_ERR 20 /* ISDN memory read/overrun error */
#define IO_INR_DMA 16 /* first DMA IRQ */
/*
* The lower 16 bits are system-specific and thus defined in
* system-specific headers.
*/
#define IO_IRQ_BASE 8 /* first IRQ assigned to I/O ASIC */
#define IO_IRQ_LINES 32 /* number of I/O ASIC interrupts */
#define IO_IRQ_NR(n) ((n) + IO_IRQ_BASE)
#define IO_IRQ_MASK(n) (1 << (n))
#define IO_IRQ_ALL 0x0000ffff
#define IO_IRQ_DMA 0xffff0000
#endif /* __ASM_DEC_IOASIC_INTS_H */
Annotation
- Atlas domain: Architecture Layer / arch/mips.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.