arch/m68k/include/asm/atariints.h

Source file repositories/reference/linux-study-clean/arch/m68k/include/asm/atariints.h

File Facts

System
Linux kernel
Corpus path
arch/m68k/include/asm/atariints.h
Extension
.h
Size
5691 bytes
Lines
209
Domain
Architecture Layer
Bucket
arch/m68k
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.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _LINUX_ATARIINTS_H_
#define _LINUX_ATARIINTS_H_

#include <asm/irq.h>
#include <asm/atarihw.h>

/*
** Atari Interrupt sources.
**
*/

#define STMFP_SOURCE_BASE  8
#define TTMFP_SOURCE_BASE  24
#define SCC_SOURCE_BASE    40
#define VME_SOURCE_BASE    56
#define VME_MAX_SOURCES    16

#define NUM_ATARI_SOURCES  141

/* convert vector number to int source number */
#define IRQ_VECTOR_TO_SOURCE(v)	((v) - ((v) < 0x20 ? 0x18 : (0x40-8)))

/* convert irq_handler index to vector number */
#define IRQ_SOURCE_TO_VECTOR(i)	((i) + ((i) < 8 ? 0x18 : (0x40-8)))

/* ST-MFP interrupts */
#define IRQ_MFP_BUSY      (8)
#define IRQ_MFP_DCD       (9)
#define IRQ_MFP_CTS	  (10)
#define IRQ_MFP_GPU	  (11)
#define IRQ_MFP_TIMD      (12)
#define IRQ_MFP_TIMC	  (13)
#define IRQ_MFP_ACIA	  (14)
#define IRQ_MFP_FDC       (15)
#define IRQ_MFP_ACSI      IRQ_MFP_FDC
#define IRQ_MFP_FSCSI     IRQ_MFP_FDC
#define IRQ_MFP_IDE       IRQ_MFP_FDC
#define IRQ_MFP_TIMB      (16)
#define IRQ_MFP_SERERR    (17)
#define IRQ_MFP_SEREMPT   (18)
#define IRQ_MFP_RECERR    (19)
#define IRQ_MFP_RECFULL   (20)
#define IRQ_MFP_TIMA      (21)
#define IRQ_MFP_RI        (22)
#define IRQ_MFP_MMD       (23)

/* TT-MFP interrupts */
#define IRQ_TT_MFP_IO0       (24)
#define IRQ_TT_MFP_IO1       (25)
#define IRQ_TT_MFP_SCC	     (26)
#define IRQ_TT_MFP_RI	     (27)
#define IRQ_TT_MFP_TIMD      (28)
#define IRQ_TT_MFP_TIMC	     (29)
#define IRQ_TT_MFP_DRVRDY    (30)
#define IRQ_TT_MFP_SCSIDMA   (31)
#define IRQ_TT_MFP_TIMB      (32)
#define IRQ_TT_MFP_SERERR    (33)
#define IRQ_TT_MFP_SEREMPT   (34)
#define IRQ_TT_MFP_RECERR    (35)
#define IRQ_TT_MFP_RECFULL   (36)
#define IRQ_TT_MFP_TIMA      (37)
#define IRQ_TT_MFP_RTC       (38)
#define IRQ_TT_MFP_SCSI      (39)

/* SCC interrupts */
#define IRQ_SCCB_TX	     (40)
#define IRQ_SCCB_STAT	     (42)
#define IRQ_SCCB_RX	     (44)
#define IRQ_SCCB_SPCOND	     (46)
#define IRQ_SCCA_TX	     (48)
#define IRQ_SCCA_STAT	     (50)
#define IRQ_SCCA_RX	     (52)
#define IRQ_SCCA_SPCOND	     (54)

/* shared MFP timer D interrupts - hires timer for EtherNEC et al. */
#define IRQ_MFP_TIMER1       (64)
#define IRQ_MFP_TIMER2       (65)
#define IRQ_MFP_TIMER3       (66)
#define IRQ_MFP_TIMER4       (67)
#define IRQ_MFP_TIMER5       (68)
#define IRQ_MFP_TIMER6       (69)
#define IRQ_MFP_TIMER7       (70)
#define IRQ_MFP_TIMER8       (71)

#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 MFP_ENABLE	0
#define MFP_PENDING	1

Annotation

Implementation Notes