/* * Copyright (c) 1988 University of Utah. * Copyright (c) 1982, 1986, 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department. * * %sccs.include.redist.c% * * from: Utah $Hdr: machparam.h 1.16 92/12/20$ * * @(#)param.h 8.4 (Berkeley) 05/13/95 */ /* * Machine dependent constants for HP9000 series 300. */ #define MACHINE "hp300" #define NCPUS 1 /* * 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 3 #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/(sizeof (struct pte))) #define NBSEG 0x400000 /* bytes/segment */ #define SEGOFSET (NBSEG-1) /* byte offset into segment */ #define SEGSHIFT 22 /* LOG2(NBSEG) */ #define KERNBASE 0x00000000 /* start of kernel virtual */ #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) #define DEV_BSIZE 512 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ #define BLKDEV_IOSIZE 2048 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ #define CLSIZE 1 #define CLSIZELOG2 0 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ #define SSIZE 1 /* initial stack size/NBPG */ #define SINCR 1 /* increment of stack/NBPG */ #define UPAGES 2 /* pages of u-area */ /* * Constants related to network buffer management. * MCLBYTES must be no larger than CLBYTES (the software page size), and, * on machines that exchange pages of input or output buffers with mbuf * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple * of the hardware page size. */ #define MSIZE 128 /* size of an mbuf */ #define MCLBYTES 2048 /* large enough for ether MTU */ #define MCLSHIFT 11 #define MCLOFSET (MCLBYTES - 1) #ifndef NMBCLUSTERS #ifdef GATEWAY #define NMBCLUSTERS 512 /* map size, max cluster allocation */ #else #define NMBCLUSTERS 256 /* map size, max cluster allocation */ #endif #endif /* * Size of kernel malloc arena in CLBYTES-sized logical pages */ #ifndef NKMEMCLUSTERS #define NKMEMCLUSTERS (2048*1024/CLBYTES) #endif /* pages ("clicks") (4096 bytes) to disk blocks */ #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) #define dtob(x) ((x)<>PGSHIFT) #define LABELSECTOR (1024/DEV_BSIZE) #define LABELOFFSET 0 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ ((bytes) >> DEV_BSHIFT) #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ ((db) << 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 hp300_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) #define hp300_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) #define hp300_btop(x) ((unsigned)(x) >> PGSHIFT) #define hp300_ptob(x) ((unsigned)(x) << PGSHIFT) /* * spl functions; all but spl0 are done in-line */ #include #define _spl(s) \ ({ \ register int _spl_r; \ \ asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ "&=d" (_spl_r) : "di" (s)); \ _spl_r; \ }) /* spl0 requires checking for software interrupts */ #define spl1() _spl(PSL_S|PSL_IPL1) #define spl2() _spl(PSL_S|PSL_IPL2) #define spl3() _spl(PSL_S|PSL_IPL3) #define spl4() _spl(PSL_S|PSL_IPL4) #define spl5() _spl(PSL_S|PSL_IPL5) #define spl6() _spl(PSL_S|PSL_IPL6) #define spl7() _spl(PSL_S|PSL_IPL7) #define splsoftclock() spl1() #define splnet() spl1() #define splbio() spl5() #define splimp() spl5() #define spltty() spl5() #define splclock() spl6() #define splstatclock() spl6() #define splvm() spl6() #define splhigh() spl7() #define splsched() spl7() /* watch out for side effects */ #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) #ifdef KERNEL #ifndef LOCORE int cpuspeed; #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); } #endif #else #define DELAY(n) { register int N = (n); while (--N > 0); } #endif #ifdef HPUXCOMPAT /* * Constants/macros for HPUX multiple mapping of user address space. * Pages in the first 256Mb are mapped in at every 256Mb segment. */ #define HPMMMASK 0xF0000000 #define ISHPMMADDR(v) \ ((curproc->p_md.md_flags & MDP_HPUXMMAP) && \ ((unsigned)(v) & HPMMMASK) && \ ((unsigned)(v) & HPMMMASK) != HPMMMASK) #define HPMMBASEADDR(v) \ ((unsigned)(v) & ~HPMMMASK) #endif #ifndef _SIMPLELOCK_H_ #define _SIMPLELOCK_H_ /* * A simple spin lock. * * This structure only sets one bit of data, but is sized based on the * minimum word size that can be operated on by the hardware test-and-set * instruction. It is only needed for multiprocessors, as uniprocessors * will always run to completion or a sleep. It is an error to hold one * of these locks while a process is sleeping. */ struct simplelock { int lock_data; }; #if !defined(DEBUG) && NCPUS > 1 /* * The simple-lock routines are the primitives out of which the lock * package is built. The machine-dependent code must implement an * atomic test_and_set operation that indivisibly sets the simple lock * to non-zero and returns its old value. It also assumes that the * setting of the lock to zero below is indivisible. Simple locks may * only be used for exclusive locks. */ static __inline void simple_lock_init(lkp) struct simplelock *lkp; { lkp->lock_data = 0; } static __inline void simple_lock(lkp) __volatile struct simplelock *lkp; { while (test_and_set(&lkp->lock_data)) continue; } static __inline int simple_lock_try(lkp) __volatile struct simplelock *lkp; { return (!test_and_set(&lkp->lock_data)) } static __inline void simple_unlock(lkp) __volatile struct simplelock *lkp; { lkp->lock_data = 0; } #endif /* NCPUS > 1 */ #endif /* !_SIMPLELOCK_H_ */