1 /* $NetBSD: machdep.h,v 1.5 2023/06/12 19:04:14 skrll Exp $ */
2
3 /*-
4 * Copyright (c) 2022 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Nick Hudson
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifndef _RISCV_MACHDEP_H_
33 #define _RISCV_MACHDEP_H_
34
35 #include <sys/cdefs.h>
36 __KERNEL_RCSID(0, "$NetBSD: machdep.h,v 1.5 2023/06/12 19:04:14 skrll Exp $");
37
38 #include <sys/proc.h>
39 #include <sys/lwp.h>
40 #include <sys/siginfo.h>
41
42 static inline paddr_t
riscv_kern_vtophys(vaddr_t va)43 riscv_kern_vtophys(vaddr_t va)
44 {
45 extern unsigned long kern_vtopdiff;
46
47 return va - kern_vtopdiff;
48 }
49
50 static inline vaddr_t
riscv_kern_phystov(paddr_t pa)51 riscv_kern_phystov(paddr_t pa)
52 {
53 extern unsigned long kern_vtopdiff;
54
55 return pa + kern_vtopdiff;
56 }
57
58 #define KERN_VTOPHYS(va) riscv_kern_vtophys((vaddr_t)va)
59 #define KERN_PHYSTOV(pa) riscv_kern_phystov((paddr_t)pa)
60
61 extern paddr_t physical_start;
62 extern paddr_t physical_end;
63
64 void uartputc(int);
65 int uartgetc(void);
66
67 paddr_t init_mmu(paddr_t);
68 void init_riscv(register_t, paddr_t);
69
70 void riscv_timer_frequency_set(uint32_t); // which header?
71 uint32_t
72 riscv_timer_frequency_get(void); // which header?
73 void riscv_timer_register(void (*timerfn)(void));
74 void riscv_intr_set_handler(void (*intr_handler)(struct trapframe *,
75 register_t, register_t, register_t));
76
77 void riscv_timer_init(void);
78 int riscv_timer_intr(void *arg);
79
80 void pt_dump(void (*)(const char *, ...));
81
82
83 #endif /* _RISCV_MACHDEP_H_ */
84