diff options
Diffstat (limited to 'sys/arch/pmax/include/mips_param.h')
| -rw-r--r-- | sys/arch/pmax/include/mips_param.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/sys/arch/pmax/include/mips_param.h b/sys/arch/pmax/include/mips_param.h new file mode 100644 index 00000000000..9c3ad6736be --- /dev/null +++ b/sys/arch/pmax/include/mips_param.h @@ -0,0 +1,82 @@ +/* $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 */ |