usr/src/sys/news3400/include/param.h

/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1992 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     7.1 (Berkeley) %G%
 */

/*
 * Machine dependent constants for DEC Station 3100.
 */
#define MACHINE "news"
#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 ALIGN(p)        (((u_int)(p) + 3) &~ 3)

#define NBPG            4096            /* bytes/page */
#define PGOFSET         (NBPG-1)        /* byte offset into page */
#define PGSHIFT         12              /* LOG2(NBPG) */
#define NPTEPG          (NBPG/4)

#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         (24 * 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 KERNELSTACK     0xffffe000      /* virtual address of kernel stack */
#define UADDR           0xffffc000      /* address of u */
#define UVPN            (UADDR>>PGSHIFT)/* virtual page number of u */

/*
 * 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)<<DEV_BSHIFT)

/* pages to bytes */
#define ctob(x) ((x)<<PGSHIFT)

/* bytes to pages */
#define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)

#define btodb(bytes)                    /* calculates (bytes / DEV_BSIZE) */ \
        ((unsigned)(bytes) >> DEV_BSHIFT)
#define dbtob(db)                       /* calculates (db * DEV_BSIZE) */ \
        ((unsigned)(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
#ifdef PMAXSPL
#define splnet          Mach_spl0
#define splbio          Mach_spl0
#define spltty          Mach_spl1
#define splimp          Mach_spl1
#define splclock        Mach_spl2
#else
#define splnet          spl2
#define splsoftclock    spl2
#define splbio          spl3
#define spltty          spl4
#define splimp          spl4
#define splclock        spl5
#endif /* PMAXSPL */
#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 */

#define SYSCALL_BSDOFFSET       1000

#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 */