1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. 9 * 10 * %sccs.include.redist.c% 11 * 12 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 13 * 14 * @(#)param.h 7.10 (Berkeley) 05/26/92 15 */ 16 17 /* 18 * Machine dependent constants for HP9000 series 300. 19 */ 20 #define MACHINE "hp300" 21 22 /* 23 * Round p (pointer or byte index) up to a correctly-aligned value for all 24 * data types (int, long, ...). The result is u_int and must be cast to 25 * any desired pointer type. 26 */ 27 #define ALIGNBYTES 3 28 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) 29 30 #define NBPG 4096 /* bytes/page */ 31 #define PGOFSET (NBPG-1) /* byte offset into page */ 32 #define PGSHIFT 12 /* LOG2(NBPG) */ 33 #define NPTEPG (NBPG/(sizeof (struct pte))) 34 35 #define NBSEG (1024*NBPG) /* bytes/segment */ 36 #define SEGOFSET (NBSEG-1) /* byte offset into segment */ 37 #define SEGSHIFT 22 /* LOG2(NBSEG) */ 38 39 #define KERNBASE 0x00000000 /* start of kernel virtual */ 40 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 41 42 #define DEV_BSIZE 512 43 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 44 #define BLKDEV_IOSIZE 2048 45 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 46 47 #define CLSIZE 1 48 #define CLSIZELOG2 0 49 50 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 51 #define SSIZE 1 /* initial stack size/NBPG */ 52 #define SINCR 1 /* increment of stack/NBPG */ 53 54 #define UPAGES 3 /* pages of u-area */ 55 56 /* 57 * Constants related to network buffer management. 58 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 59 * on machines that exchange pages of input or output buffers with mbuf 60 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 61 * of the hardware page size. 62 */ 63 #define MSIZE 128 /* size of an mbuf */ 64 #define MCLBYTES 1024 65 #define MCLSHIFT 10 66 #define MCLOFSET (MCLBYTES - 1) 67 #ifndef NMBCLUSTERS 68 #ifdef GATEWAY 69 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 70 #else 71 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 72 #endif 73 #endif 74 75 /* 76 * Size of kernel malloc arena in CLBYTES-sized logical pages 77 */ 78 #ifndef NKMEMCLUSTERS 79 #define NKMEMCLUSTERS (2048*1024/CLBYTES) 80 #endif 81 82 /* pages ("clicks") (4096 bytes) to disk blocks */ 83 #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 84 #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 85 #define dtob(x) ((x)<<DEV_BSHIFT) 86 87 /* pages to bytes */ 88 #define ctob(x) ((x)<<PGSHIFT) 89 90 /* bytes to pages */ 91 #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 92 93 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 94 ((unsigned)(bytes) >> DEV_BSHIFT) 95 #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 96 ((unsigned)(db) << DEV_BSHIFT) 97 98 /* 99 * Map a ``block device block'' to a file system block. 100 * This should be device dependent, and should use the bsize 101 * field from the disk label. 102 * For now though just use DEV_BSIZE. 103 */ 104 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 105 106 /* 107 * Mach derived conversion macros 108 */ 109 #define hp300_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1)) 110 #define hp300_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1)) 111 #define hp300_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 112 #define hp300_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 113 #define hp300_btos(x) ((unsigned)(x) >> SEGSHIFT) 114 #define hp300_stob(x) ((unsigned)(x) << SEGSHIFT) 115 #define hp300_btop(x) ((unsigned)(x) >> PGSHIFT) 116 #define hp300_ptob(x) ((unsigned)(x) << PGSHIFT) 117 118 /* 119 * spl functions; all but spl0 are done in-line 120 */ 121 #include <machine/psl.h> 122 123 #define _spl(s) \ 124 ({ \ 125 register int _spl_r; \ 126 \ 127 asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 128 "&=d" (_spl_r) : "di" (s)); \ 129 _spl_r; \ 130 }) 131 132 /* spl0 requires checking for software interrupts */ 133 #define spl1() _spl(PSL_S|PSL_IPL1) 134 #define spl2() _spl(PSL_S|PSL_IPL2) 135 #define spl3() _spl(PSL_S|PSL_IPL3) 136 #define spl4() _spl(PSL_S|PSL_IPL4) 137 #define spl5() _spl(PSL_S|PSL_IPL5) 138 #define spl6() _spl(PSL_S|PSL_IPL6) 139 #define spl7() _spl(PSL_S|PSL_IPL7) 140 141 #define splsoftclock() spl1() 142 #define splnet() spl1() 143 #define splbio() spl5() 144 #define splimp() spl5() 145 #define spltty() spl5() 146 #define splclock() spl6() 147 #define splvm() spl6() 148 #define splhigh() spl7() 149 #define splsched() spl7() 150 151 /* watch out for side effects */ 152 #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) 153 154 #ifdef KERNEL 155 #ifndef LOCORE 156 int cpuspeed; 157 #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); } 158 #endif 159 160 #else 161 #define DELAY(n) { register int N = (n); while (--N > 0); } 162 #endif 163 164 #ifdef HPUXCOMPAT 165 /* 166 * Constants/macros for HPUX multiple mapping of user address space. 167 * Pages in the first 256Mb are mapped in at every 256Mb segment. 168 */ 169 #define HPMMMASK 0xF0000000 170 #define ISHPMMADDR(v) \ 171 ((curproc->p_addr->u_pcb.pcb_flags&PCB_HPUXMMAP) && ((unsigned)(v)&HPMMMASK) != HPMMMASK) 172 #define HPMMBASEADDR(v) ((unsigned)(v) & ~HPMMMASK) 173 #endif 174