1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * from: @(#)param.h 5.8 (Berkeley) 6/28/91 30 */ 31 32 #ifndef _MACHINE_PARAM_H_ 33 #define _MACHINE_PARAM_H_ 34 35 /* 36 * Machine dependent constants for RISC-V. 37 */ 38 39 #include <machine/_align.h> 40 41 #define STACKALIGNBYTES (16 - 1) 42 #define STACKALIGN(p) ((uint64_t)(p) & ~STACKALIGNBYTES) 43 44 #define __PCI_REROUTE_INTERRUPT 45 46 #ifndef MACHINE 47 #define MACHINE "riscv" 48 #endif 49 #ifndef MACHINE_ARCH 50 #define MACHINE_ARCH "riscv64" 51 #endif 52 53 #ifdef SMP 54 #ifndef MAXCPU 55 #define MAXCPU 16 56 #endif 57 #else 58 #define MAXCPU 1 59 #endif 60 61 #ifndef MAXMEMDOM 62 #define MAXMEMDOM 1 63 #endif 64 65 #define ALIGNBYTES _ALIGNBYTES 66 #define ALIGN(p) _ALIGN(p) 67 /* 68 * ALIGNED_POINTER is a boolean macro that checks whether an address 69 * is valid to fetch data elements of type t from on this architecture. 70 * This does not reflect the optimal alignment, just the possibility 71 * (within reasonable limits). 72 */ 73 #define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0) 74 75 /* 76 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 77 * architecture. It should be used with appropriate caution. 78 */ 79 #define CACHE_LINE_SHIFT 6 80 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 81 82 #define PAGE_SHIFT 12 83 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 84 #define PAGE_MASK (PAGE_SIZE - 1) 85 86 #define MAXPAGESIZES 3 /* maximum number of supported page sizes */ 87 88 #ifndef KSTACK_PAGES 89 #define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */ 90 #endif 91 92 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 93 #define PCPU_PAGES 1 94 95 /* 96 * Mach derived conversion macros 97 */ 98 #define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK) 99 #define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK) 100 101 #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 102 #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 103 104 #define riscv_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 105 #define riscv_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 106 107 #define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) 108 109 #endif /* !_MACHINE_PARAM_H_ */ 110