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Diffstat (limited to 'sys/riscv/include/param.h')
| -rw-r--r-- | sys/riscv/include/param.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/sys/riscv/include/param.h b/sys/riscv/include/param.h new file mode 100644 index 0000000..2c80058 --- /dev/null +++ b/sys/riscv/include/param.h @@ -0,0 +1,108 @@ +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * from: @(#)param.h 5.8 (Berkeley) 6/28/91 + * $FreeBSD$ + */ + +#ifndef _MACHINE_PARAM_H_ +#define _MACHINE_PARAM_H_ + +/* + * Machine dependent constants for RISC-V. + */ + +#include <machine/_align.h> + +#define STACKALIGNBYTES (16 - 1) +#define STACKALIGN(p) ((uint64_t)(p) & ~STACKALIGNBYTES) + +#ifndef MACHINE +#define MACHINE "riscv" +#endif +#ifndef MACHINE_ARCH +#define MACHINE_ARCH "riscv64" +#endif + +#if defined(SMP) || defined(KLD_MODULE) +#ifndef MAXCPU +#define MAXCPU 2 +#endif +#else +#define MAXCPU 1 +#endif /* SMP || KLD_MODULE */ + +#ifndef MAXMEMDOM +#define MAXMEMDOM 1 +#endif + +#define ALIGNBYTES _ALIGNBYTES +#define ALIGN(p) _ALIGN(p) +/* + * ALIGNED_POINTER is a boolean macro that checks whether an address + * is valid to fetch data elements of type t from on this architecture. + * This does not reflect the optimal alignment, just the possibility + * (within reasonable limits). + */ +#define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0) + +/* + * CACHE_LINE_SIZE is the compile-time maximum cache line size for an + * architecture. It should be used with appropriate caution. + */ +#define CACHE_LINE_SHIFT 6 +#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) + +#define PAGE_SHIFT 12 +#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ +#define PAGE_MASK (PAGE_SIZE - 1) + +#define MAXPAGESIZES 1 /* maximum number of supported page sizes */ + +#ifndef KSTACK_PAGES +#define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */ +#endif + +#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ +#define PCPU_PAGES 1 + +/* + * Mach derived conversion macros + */ +#define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK) +#define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK) + +#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) +#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) + +#define riscv_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) +#define riscv_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) + +#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) + +#endif /* !_MACHINE_PARAM_H_ */ |
