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 * $FreeBSD$ 31 */ 32 33 #ifndef _MACHINE_PARAM_H_ 34 #define _MACHINE_PARAM_H_ 35 36 /* 37 * Machine dependent constants for RISC-V. 38 */ 39 40 #include <machine/_align.h> 41 42 #define STACKALIGNBYTES (16 - 1) 43 #define STACKALIGN(p) ((uint64_t)(p) & ~STACKALIGNBYTES) 44 45 #define __PCI_REROUTE_INTERRUPT 46 47 #ifndef MACHINE 48 #define MACHINE "riscv" 49 #endif 50 #ifndef MACHINE_ARCH 51 52 /* Always use the hard-float arch for the kernel. */ 53 #if !defined(_KERNEL) && defined(__riscv_float_abi_soft) 54 #define MACHINE_ARCH "riscv64sf" 55 #else 56 #define MACHINE_ARCH "riscv64" 57 #endif 58 #endif 59 #ifdef _KERNEL 60 #define MACHINE_ARCHES "riscv64 riscv64sf" 61 #endif 62 63 #ifdef SMP 64 #ifndef MAXCPU 65 #define MAXCPU 16 66 #endif 67 #else 68 #define MAXCPU 1 69 #endif 70 71 #ifndef MAXMEMDOM 72 #define MAXMEMDOM 1 73 #endif 74 75 #define ALIGNBYTES _ALIGNBYTES 76 #define ALIGN(p) _ALIGN(p) 77 /* 78 * ALIGNED_POINTER is a boolean macro that checks whether an address 79 * is valid to fetch data elements of type t from on this architecture. 80 * This does not reflect the optimal alignment, just the possibility 81 * (within reasonable limits). 82 */ 83 #define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0) 84 85 /* 86 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 87 * architecture. It should be used with appropriate caution. 88 */ 89 #define CACHE_LINE_SHIFT 6 90 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 91 92 #define PAGE_SHIFT 12 93 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 94 #define PAGE_MASK (PAGE_SIZE - 1) 95 96 #define MAXPAGESIZES 3 /* maximum number of supported page sizes */ 97 98 #ifndef KSTACK_PAGES 99 #define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */ 100 #endif 101 102 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 103 #define PCPU_PAGES 1 104 105 /* 106 * Mach derived conversion macros 107 */ 108 #define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK) 109 #define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK) 110 111 #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 112 #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 113 114 #define riscv_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 115 #define riscv_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 116 117 #define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) 118 119 #endif /* !_MACHINE_PARAM_H_ */ 120