1 /* $NetBSD: machdep.h,v 1.19 2024/02/07 04:20:26 msaitoh Exp $ */
2
3 /*
4 * Copyright (c) 2017 Ryo Shimizu
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #ifndef _AARCH64_MACHDEP_H_
30 #define _AARCH64_MACHDEP_H_
31
32 #include <sys/proc.h>
33 #include <sys/lwp.h>
34 #include <sys/siginfo.h>
35
36 // initarm_common
37 #include <machine/bootconfig.h>
38
39 struct boot_physmem;
40
41 static inline paddr_t
aarch64_kern_vtophys(vaddr_t va)42 aarch64_kern_vtophys(vaddr_t va)
43 {
44 extern u_long kern_vtopdiff;
45
46 return va - kern_vtopdiff;
47 }
48
49 static inline vaddr_t
aarch64_kern_phystov(paddr_t pa)50 aarch64_kern_phystov(paddr_t pa)
51 {
52 extern u_long kern_vtopdiff;
53
54 return pa + kern_vtopdiff;
55 }
56
57 #define KERN_VTOPHYS(va) aarch64_kern_vtophys(va)
58 #define KERN_PHYSTOV(pa) aarch64_kern_phystov(pa)
59
60 extern paddr_t physical_start;
61 extern paddr_t physical_end;
62 extern vaddr_t module_start;
63 extern vaddr_t module_end;
64
65 extern void (*cpu_reset_address0)(void);
66 extern void (*cpu_reset_address)(void);
67 extern void (*cpu_powerdown_address)(void);
68
69 extern char *booted_kernel;
70
71 /*
72 * note that we use void * as all the platforms have different ideas on what
73 * the structure is
74 */
75 vaddr_t initarm(void *);
76
77 vaddr_t initarm_common(vaddr_t, vsize_t, const struct boot_physmem *, size_t);
78 void cpu_kernel_vm_init(paddr_t, psize_t);
79 void uartputc(int);
80
81 void parse_mi_bootargs(char *);
82 void dumpsys(void);
83
84 void cpu_startup_hook(void);
85 void cpu_startup_default(void);
86
87 struct trapframe;
88
89 /* fault.c */
90 void data_abort_handler(struct trapframe *, uint32_t);
91
92 /* trap.c */
93 void lwp_trampoline(void);
94 void configure_cpu_traps(void);
95 void cpu_dosoftints(void);
96 void cpu_switchto_softint(struct lwp *, int);
97 void dosoftints(void);
98 int fetch_arm_insn(uint64_t, uint64_t, uint32_t *);
99 void trap_doast(struct trapframe *);
100
101 void trap_el1t_sync(struct trapframe *);
102 void trap_el1t_irq(struct trapframe *);
103 void trap_el1t_fiq(struct trapframe *);
104 void trap_el1t_error(struct trapframe *);
105 void trap_el1h_sync(struct trapframe *);
106 void trap_el1h_fiq(struct trapframe *);
107 void trap_el1h_error(struct trapframe *);
108 void trap_el0_sync(struct trapframe *);
109 void trap_el0_fiq(struct trapframe *);
110 void trap_el0_error(struct trapframe *);
111 void trap_el0_32sync(struct trapframe *);
112 void trap_el0_32fiq(struct trapframe *);
113 void trap_el0_32error(struct trapframe *);
114 void cpu_irq(struct trapframe *);
115 void cpu_fiq(struct trapframe *);
116
117 /* cpu_onfault */
118 int cpu_set_onfault(struct faultbuf *) __returns_twice;
119 void cpu_jump_onfault(struct trapframe *, const struct faultbuf *, int);
120
121 #if defined(_KERNEL)
122 static inline void
cpu_unset_onfault(void)123 cpu_unset_onfault(void)
124 {
125 curlwp->l_md.md_onfault = NULL;
126 }
127
128 static inline void
cpu_enable_onfault(struct faultbuf * fb)129 cpu_enable_onfault(struct faultbuf *fb)
130 {
131 curlwp->l_md.md_onfault = fb;
132 }
133
134 static inline struct faultbuf *
cpu_disable_onfault(void)135 cpu_disable_onfault(void)
136 {
137 struct faultbuf * const fb = curlwp->l_md.md_onfault;
138 if (fb != NULL)
139 curlwp->l_md.md_onfault = NULL;
140 return fb;
141 }
142 #endif
143
144 /* exec_machdep.c */
145 void aarch64_setregs_ptrauth(struct lwp *, bool);
146
147 /* fpu.c */
148 void fpu_attach(struct cpu_info *);
149 struct fpreg;
150 void load_fpregs(const struct fpreg *);
151 void save_fpregs(struct fpreg *);
152
153 #ifdef TRAP_SIGDEBUG
154 #define do_trapsignal(l, signo, code, addr, trap) \
155 do_trapsignal1(__func__, __LINE__, tf, l, signo, code, addr, trap)
156 #else
157 #define do_trapsignal(l, signo, code, addr, trap) \
158 do_trapsignal1(l, signo, code, addr, trap)
159 #endif
160
161 void do_trapsignal1(
162 #ifdef TRAP_SIGDEBUG
163 const char *func, size_t line, struct trapframe *tf,
164 #endif
165 struct lwp *l, int signo, int code, void *addr, int trap);
166
167 const char *eclass_trapname(uint32_t);
168
169 #include <sys/pcu.h>
170
171 extern const pcu_ops_t pcu_fpu_ops;
172
173 static inline bool
fpu_used_p(lwp_t * l)174 fpu_used_p(lwp_t *l)
175 {
176 return pcu_valid_p(&pcu_fpu_ops, l);
177 }
178
179 static inline void
fpu_save(lwp_t * l)180 fpu_save(lwp_t *l)
181 {
182 pcu_save(&pcu_fpu_ops, l);
183 }
184
185 static inline void
fpu_load(lwp_t * l)186 fpu_load(lwp_t *l)
187 {
188 pcu_load(&pcu_fpu_ops);
189 }
190
191 static inline void
fpu_discard(lwp_t * l,bool usesw)192 fpu_discard(lwp_t *l, bool usesw)
193 {
194 pcu_discard(&pcu_fpu_ops, l, usesw);
195 }
196
197 #endif /* _AARCH64_MACHDEP_H_ */
198