18d7e7a98SRuslan Bukin /*- 28d7e7a98SRuslan Bukin * Copyright (c) 1990 The Regents of the University of California. 38d7e7a98SRuslan Bukin * All rights reserved. 48d7e7a98SRuslan Bukin * 58d7e7a98SRuslan Bukin * This code is derived from software contributed to Berkeley by 68d7e7a98SRuslan Bukin * William Jolitz. 78d7e7a98SRuslan Bukin * 88d7e7a98SRuslan Bukin * Redistribution and use in source and binary forms, with or without 98d7e7a98SRuslan Bukin * modification, are permitted provided that the following conditions 108d7e7a98SRuslan Bukin * are met: 118d7e7a98SRuslan Bukin * 1. Redistributions of source code must retain the above copyright 128d7e7a98SRuslan Bukin * notice, this list of conditions and the following disclaimer. 138d7e7a98SRuslan Bukin * 2. Redistributions in binary form must reproduce the above copyright 148d7e7a98SRuslan Bukin * notice, this list of conditions and the following disclaimer in the 158d7e7a98SRuslan Bukin * documentation and/or other materials provided with the distribution. 168d7e7a98SRuslan Bukin * 178d7e7a98SRuslan Bukin * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 188d7e7a98SRuslan Bukin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 198d7e7a98SRuslan Bukin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 208d7e7a98SRuslan Bukin * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 218d7e7a98SRuslan Bukin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 228d7e7a98SRuslan Bukin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 238d7e7a98SRuslan Bukin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 248d7e7a98SRuslan Bukin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 258d7e7a98SRuslan Bukin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 268d7e7a98SRuslan Bukin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 278d7e7a98SRuslan Bukin * SUCH DAMAGE. 288d7e7a98SRuslan Bukin */ 298d7e7a98SRuslan Bukin 308d7e7a98SRuslan Bukin #ifndef _MACHINE_PARAM_H_ 318d7e7a98SRuslan Bukin #define _MACHINE_PARAM_H_ 328d7e7a98SRuslan Bukin 338d7e7a98SRuslan Bukin /* 348d7e7a98SRuslan Bukin * Machine dependent constants for RISC-V. 358d7e7a98SRuslan Bukin */ 368d7e7a98SRuslan Bukin 378d7e7a98SRuslan Bukin #include <machine/_align.h> 388d7e7a98SRuslan Bukin 398d7e7a98SRuslan Bukin #define STACKALIGNBYTES (16 - 1) 408d7e7a98SRuslan Bukin #define STACKALIGN(p) ((uint64_t)(p) & ~STACKALIGNBYTES) 418d7e7a98SRuslan Bukin 428d7e7a98SRuslan Bukin #ifndef MACHINE 438d7e7a98SRuslan Bukin #define MACHINE "riscv" 448d7e7a98SRuslan Bukin #endif 458d7e7a98SRuslan Bukin #ifndef MACHINE_ARCH 46*61bbe53cSJohn Baldwin #define MACHINE_ARCH "riscv64" 478d7e7a98SRuslan Bukin #endif 488d7e7a98SRuslan Bukin 49c3d326fdSMark Johnston #ifdef SMP 508d7e7a98SRuslan Bukin #ifndef MAXCPU 5117696c12SRuslan Bukin #define MAXCPU 16 528d7e7a98SRuslan Bukin #endif 538d7e7a98SRuslan Bukin #else 548d7e7a98SRuslan Bukin #define MAXCPU 1 55c3d326fdSMark Johnston #endif 568d7e7a98SRuslan Bukin 578d7e7a98SRuslan Bukin #ifndef MAXMEMDOM 588d7e7a98SRuslan Bukin #define MAXMEMDOM 1 598d7e7a98SRuslan Bukin #endif 608d7e7a98SRuslan Bukin 618d7e7a98SRuslan Bukin #define ALIGNBYTES _ALIGNBYTES 628d7e7a98SRuslan Bukin #define ALIGN(p) _ALIGN(p) 638d7e7a98SRuslan Bukin /* 648d7e7a98SRuslan Bukin * ALIGNED_POINTER is a boolean macro that checks whether an address 658d7e7a98SRuslan Bukin * is valid to fetch data elements of type t from on this architecture. 668d7e7a98SRuslan Bukin * This does not reflect the optimal alignment, just the possibility 678d7e7a98SRuslan Bukin * (within reasonable limits). 688d7e7a98SRuslan Bukin */ 698d7e7a98SRuslan Bukin #define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0) 708d7e7a98SRuslan Bukin 718d7e7a98SRuslan Bukin /* 728d7e7a98SRuslan Bukin * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 738d7e7a98SRuslan Bukin * architecture. It should be used with appropriate caution. 748d7e7a98SRuslan Bukin */ 758d7e7a98SRuslan Bukin #define CACHE_LINE_SHIFT 6 768d7e7a98SRuslan Bukin #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 778d7e7a98SRuslan Bukin 788d7e7a98SRuslan Bukin #define PAGE_SHIFT 12 798d7e7a98SRuslan Bukin #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 808d7e7a98SRuslan Bukin #define PAGE_MASK (PAGE_SIZE - 1) 818d7e7a98SRuslan Bukin 82f6893f09SMark Johnston #define MAXPAGESIZES 3 /* maximum number of supported page sizes */ 838d7e7a98SRuslan Bukin 848d7e7a98SRuslan Bukin #ifndef KSTACK_PAGES 858d7e7a98SRuslan Bukin #define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */ 868d7e7a98SRuslan Bukin #endif 878d7e7a98SRuslan Bukin 888d7e7a98SRuslan Bukin #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 898d7e7a98SRuslan Bukin #define PCPU_PAGES 1 908d7e7a98SRuslan Bukin 918d7e7a98SRuslan Bukin /* 928d7e7a98SRuslan Bukin * Mach derived conversion macros 938d7e7a98SRuslan Bukin */ 948d7e7a98SRuslan Bukin #define riscv_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 958d7e7a98SRuslan Bukin #define riscv_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 968d7e7a98SRuslan Bukin 978d7e7a98SRuslan Bukin #endif /* !_MACHINE_PARAM_H_ */ 98