arch/mips/include/asm/xtalk/xtalk.h

Source file repositories/reference/linux-study-clean/arch/mips/include/asm/xtalk/xtalk.h

File Facts

System
Linux kernel
Corpus path
arch/mips/include/asm/xtalk/xtalk.h
Extension
.h
Size
1531 bytes
Lines
53
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.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _ASM_XTALK_XTALK_H
#define _ASM_XTALK_XTALK_H

#ifndef __ASSEMBLER__
/*
 * User-level device driver visible types
 */
typedef char		xwidgetnum_t;	/* xtalk widget number	(0..15) */

#define XWIDGET_NONE		-1

typedef int xwidget_part_num_t; /* xtalk widget part number */

#define XWIDGET_PART_NUM_NONE	-1

typedef int		xwidget_rev_num_t;	/* xtalk widget revision number */

#define XWIDGET_REV_NUM_NONE	-1

typedef int xwidget_mfg_num_t;	/* xtalk widget manufacturing ID */

#define XWIDGET_MFG_NUM_NONE	-1

typedef struct xtalk_piomap_s *xtalk_piomap_t;

/* It is often convenient to fold the XIO target port
 * number into the XIO address.
 */
#define XIO_NOWHERE	(0xFFFFFFFFFFFFFFFFull)
#define XIO_ADDR_BITS	(0x0000FFFFFFFFFFFFull)
#define XIO_PORT_BITS	(0xF000000000000000ull)
#define XIO_PORT_SHIFT	(60)

#define XIO_PACKED(x)	(((x)&XIO_PORT_BITS) != 0)
#define XIO_ADDR(x)	((x)&XIO_ADDR_BITS)
#define XIO_PORT(x)	((xwidgetnum_t)(((x)&XIO_PORT_BITS) >> XIO_PORT_SHIFT))
#define XIO_PACK(p, o)	((((uint64_t)(p))<<XIO_PORT_SHIFT) | ((o)&XIO_ADDR_BITS))

#endif /* !__ASSEMBLER__ */

#endif /* _ASM_XTALK_XTALK_H */

Annotation

Implementation Notes