/* $NetBSD: param.h,v 1.10 1995/12/20 00:08:43 cgd Exp $ */ /* * 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. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Utah $Hdr: machparam.h 1.11 89/08/14$ * * @(#)param.h 8.1 (Berkeley) 6/10/93 */ /* * Machine dependent constants for the Alpha. */ #define MACHINE "alpha" #define MACHINE_ARCH "alpha" #define MID_MACHINE MID_ALPHA #ifdef _KERNEL /* XXX */ #include /* XXX */ #endif /* XXX */ /* * Round p (pointer or byte index) up to a correctly-aligned value for all * data types (int, long, ...). The result is u_long and must be cast to * any desired pointer type. */ #define ALIGNBYTES 7 #define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES) #define NBPG 8192 /* bytes/page */ #define PGOFSET (NBPG-1) /* byte off. into pg */ #define PGSHIFT 13 /* LOG2(NBPG) */ #define NPTEPG (1 << (PGSHIFT-PTESHIFT)) /* pte's/page */ #define SEGSHIFT (PGSHIFT + (PGSHIFT-PTESHIFT)) /* LOG2(NBSEG) */ #define NBSEG (1 << SEGSHIFT) /* bytes/segment (8M) */ #define SEGOFSET (NBSEG-1) /* byte off. into seg */ #define KERNBASE 0xfffffc0000230000 /* 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 */ #define USPACE (UPAGES * NBPG) /* total size 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 256 /* 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 (4096*1024/CLBYTES) /* XXX? */ #endif /* pages ("clicks") 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 alpha_round_page(x) ((((unsigned long)(x)) + NBPG - 1) & ~(NBPG-1)) #define alpha_trunc_page(x) ((unsigned long)(x) & ~(NBPG-1)) #define alpha_btop(x) ((unsigned long)(x) >> PGSHIFT) #define alpha_ptob(x) ((unsigned long)(x) << PGSHIFT) #include #define splx(s) (s == PSL_IPL_0 ? spl0() : pal_swpipl(s)) #define splsoft() pal_swpipl(PSL_IPL_SOFT) #define splsoftclock() splsoft() #define splsoftnet() splsoft() #define splnet() pal_swpipl(PSL_IPL_IO) #define splbio() pal_swpipl(PSL_IPL_IO) #define splimp() pal_swpipl(PSL_IPL_IO) #define spltty() pal_swpipl(PSL_IPL_IO) #define splclock() pal_swpipl(PSL_IPL_CLOCK) #define splstatclock() pal_swpipl(PSL_IPL_CLOCK) #define splhigh() pal_swpipl(PSL_IPL_HIGH) #ifdef _KERNEL #ifndef LOCORE /* This was calibrated empirically */ extern u_int64_t cycles_per_usec; int delay __P((int)); #define DELAY(n) delay(n) int spl0 __P((void)); /* drop ipl to zero */ #endif #endif /* !_KERNEL */ int prtloc; extern int ticks; #define LOC() do { if (prtloc) printf("(%ld:%ld) %s: %d\n", curproc ? curproc->p_pid : -1, (long)ticks, __FILE__, __LINE__); } while (0) #define PLOC(str) panic("XXX: (%ld:%ld) %s at %s: %d\n", curproc ? curproc->p_pid : -1, (long)ticks, str, __FILE__, __LINE__);