/* * Copyright (c) 1988 University of Utah. * Copyright (c) 1992, 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 and Ralph Campbell. * * %sccs.include.redist.c% * * from: Utah $Hdr: machparam.h 1.11 89/08/14$ * * @(#)param.h 8.3 (Berkeley) 05/14/95 */ /* * Machine dependent constants for DEC Station 3100. */ #define MACHINE "news3400" #define NCPUS 1 #define COFF /* * 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) */ #define KERNBASE 0x80000000 /* 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 (128 * 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 */ #define UADDR 0xffffd000 /* address of u */ #define UVPN (UADDR>>PGSHIFT)/* virtual page number of u */ #define KERNELSTACK (UADDR+UPAGES*NBPG) /* top of kernel stack */ /* * 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 1024 #define MCLSHIFT 10 #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 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 pmax_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) #define pmax_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) #define pmax_btop(x) ((unsigned)(x) >> PGSHIFT) #define pmax_ptob(x) ((unsigned)(x) << PGSHIFT) #ifdef news3400 #define splnet spl2 #define splsoftclock spl2 #define splbio spl3 #define spltty spl4 #define splimp spl4 #define splclock spl5 #define splstatclock spl5 #endif /* news3400 */ #ifdef KERNEL #ifndef LOCORE extern int cpuspeed; #define DELAY(n) { register int N = cpuspeed * (n) / 2; while (--N > 0); } #endif #else /* !KERNEL */ #define DELAY(n) { register int N = (n); while (--N > 0); } #endif /* !KERNEL */ #ifndef LOCORE extern int intrcnt[]; extern char *intrnames[]; #endif /* !LOCORE */ #define INTR_CLOCK 0 #define INTR_SOFTCLK 1 #define INTR_SOFTINT 2 #define INTR_AST 3 #define INTR_SCSI00 4 #define INTR_SCSI01 5 #define INTR_SCSI02 6 #define INTR_SCSI03 7 #define INTR_SCSI04 8 #define INTR_SCSI05 9 #define INTR_SCSI06 10 #define INTR_SCSI07 11 #define INTR_SCSI10 12 #define INTR_SCSI11 13 #define INTR_SCSI12 14 #define INTR_SCSI13 15 #define INTR_SCSI14 16 #define INTR_SCSI15 17 #define INTR_SCSI16 18 #define INTR_SCSI17 19 #define INTR_ETHER0 20 #define INTR_ETHER1 21 #define INTR_ETHER2 22 #define INTR_VME2 23 #define INTR_VME4 24 #define INTR_RS0 25 #define INTR_RS1 26 #define INTR_RS2 27 #define INTR_RS3 28 #define INTR_RS4 29 #define INTR_RS5 30 #define INTR_RS6 31 #define INTR_RS7 32 #define INTR_RS8 33 #define INTR_RS9 34 #define INTR_RS10 35 #define INTR_RS11 36 #define INTR_PRINTER 37 #define INTR_FD 38 #define INTR_AUDIO 39 #define INTR_KEYBOARD 40 #define INTR_MOUSE 41 #define INTR_BITMAP 42 #define INTR_FDDI 43 #define INTR_RENDER 44 #define NINTRSLOT 45 /* # of intrcnt[] slot */ #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_ */