6d5fbdfbe2
page/segment size definitions and macros) from pmax/include/param.h, and move them to mips/include/mips_param.h.
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/* $NetBSD: mips_param.h,v 1.1 1996/05/19 17:52:18 jonathan Exp $ */
|
|
|
|
/*
|
|
* Round p (pointer or byte index) up to a correctly-aligned value for all
|
|
* data types (int, long, ...). The result is u_int and must be cast to
|
|
* any desired pointer type.
|
|
*/
|
|
#define ALIGNBYTES 7
|
|
#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
|
|
|
|
#define NBPG 4096 /* bytes/page */
|
|
#define PGOFSET (NBPG-1) /* byte offset into page */
|
|
#define PGSHIFT 12 /* LOG2(NBPG) */
|
|
#define NPTEPG (NBPG/4)
|
|
|
|
#define NBSEG 0x400000 /* bytes/segment */
|
|
#define SEGOFSET (NBSEG-1) /* byte offset into segment */
|
|
#define SEGSHIFT 22 /* LOG2(NBSEG) */
|
|
|
|
/*
|
|
* Size of kernel malloc arena in CLBYTES-sized logical pages
|
|
*/
|
|
#ifndef NKMEMCLUSTERS
|
|
#define NKMEMCLUSTERS (512*1024/CLBYTES)
|
|
#endif
|
|
|
|
/* pages ("clicks") (4096 bytes) to disk blocks */
|
|
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
|
|
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
|
|
|
|
/* pages to bytes */
|
|
#define ctob(x) ((x) << PGSHIFT)
|
|
#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
|
|
|
|
/* bytes to disk blocks */
|
|
#define btodb(x) ((x) >> DEV_BSHIFT)
|
|
#define dbtob(x) ((x) << DEV_BSHIFT)
|
|
|
|
/*
|
|
* Map a ``block device block'' to a file system block.
|
|
* This should be device dependent, and should use the bsize
|
|
* field from the disk label.
|
|
* For now though just use DEV_BSIZE.
|
|
*/
|
|
#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
|
|
|
|
/*
|
|
* Mach derived conversion macros
|
|
*/
|
|
#define mips_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
|
|
#define mips_trunc_page(x) ((unsigned)(x) & ~(NBPG-1))
|
|
#define mips_btop(x) ((unsigned)(x) >> PGSHIFT)
|
|
#define mips_ptob(x) ((unsigned)(x) << PGSHIFT)
|
|
|
|
#ifdef _KERNEL
|
|
#ifndef _LOCORE
|
|
typedef int spl_t;
|
|
extern spl_t splx __P((spl_t));
|
|
extern spl_t splsoftnet __P((void)), splsoftclock __P((void));
|
|
extern spl_t splhigh __P((void));
|
|
extern spl_t spl0 __P((void)); /* XXX should not enable TC on 3min */
|
|
|
|
extern void setsoftnet __P((void)), clearsoftnet __P((void));
|
|
extern void setsoftclock __P((void)), clearsoftclock __P((void));
|
|
|
|
|
|
extern int (*Mach_splnet) __P((void)), (*Mach_splbio) __P((void)),
|
|
(*Mach_splimp) __P((void)), (*Mach_spltty) __P((void)),
|
|
(*Mach_splclock) __P((void)), (*Mach_splstatclock) __P((void)),
|
|
(*Mach_splnone) __P((void));
|
|
#define splnet() ((*Mach_splnet)())
|
|
#define splbio() ((*Mach_splbio)())
|
|
#define splimp() ((*Mach_splimp)())
|
|
#define spltty() ((*Mach_spltty)())
|
|
#define splclock() ((*Mach_splclock)())
|
|
#define splstatclock() ((*Mach_splstatclock)())
|
|
|
|
extern void wbflush __P ((void)); /* XXX */
|
|
extern void delay __P((int n));
|
|
|
|
#endif /* _LOCORE */
|
|
#endif /* _KERNEL */
|