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machdep.h revision 1.12 
      1 /*	$NetBSD: machdep.h,v 1.12 2020/06/29 23:22:27 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2017 Ryo Shimizu <ryo (at) nerv.org>
      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
     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
     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 
     63 extern void (*cpu_reset_address0)(void);
     64 extern void (*cpu_reset_address)(void);
     65 extern void (*cpu_powerdown_address)(void);
     66 
     67 extern char *booted_kernel;
     68 
     69 /*
     70  * note that we use void * as all the platforms have different ideas on what
     71  * the structure is
     72  */
     73 vaddr_t initarm(void *);
     74 
     75 vaddr_t initarm_common(vaddr_t, vsize_t, const struct boot_physmem *, size_t);
     76 void cpu_kernel_vm_init(paddr_t, psize_t);
     77 void uartputc(int);
     78 
     79 void parse_mi_bootargs(char *);
     80 void dumpsys(void);
     81 
     82 void cpu_startup_hook(void);
     83 void cpu_startup_default(void);
     84 
     85 struct trapframe;
     86 
     87 /* fault.c */
     88 void data_abort_handler(struct trapframe *, uint32_t);
     89 
     90 /* trap.c */
     91 void lwp_trampoline(void);
     92 void cpu_dosoftints(void);
     93 void cpu_switchto_softint(struct lwp *, int);
     94 void dosoftints(void);
     95 void trap_doast(struct trapframe *);
     96 
     97 void trap_el1t_sync(struct trapframe *);
     98 void trap_el1t_irq(struct trapframe *);
     99 void trap_el1t_fiq(struct trapframe *);
    100 void trap_el1t_error(struct trapframe *);
    101 void trap_el1h_sync(struct trapframe *);
    102 void trap_el1h_fiq(struct trapframe *);
    103 void trap_el1h_error(struct trapframe *);
    104 void trap_el0_sync(struct trapframe *);
    105 void trap_el0_fiq(struct trapframe *);
    106 void trap_el0_error(struct trapframe *);
    107 void trap_el0_32sync(struct trapframe *);
    108 void trap_el0_32fiq(struct trapframe *);
    109 void trap_el0_32error(struct trapframe *);
    110 void interrupt(struct trapframe *);
    111 
    112 /* cpu_onfault */
    113 int cpu_set_onfault(struct faultbuf *) __returns_twice;
    114 void cpu_jump_onfault(struct trapframe *, const struct faultbuf *, int);
    115 
    116 #if defined(_KERNEL)
    117 static inline void
    118 cpu_unset_onfault(void)
    119 {
    120 	curlwp->l_md.md_onfault = NULL;
    121 }
    122 
    123 static inline void
    124 cpu_enable_onfault(struct faultbuf *fb)
    125 {
    126 	curlwp->l_md.md_onfault = fb;
    127 }
    128 
    129 static inline struct faultbuf *
    130 cpu_disable_onfault(void)
    131 {
    132 	struct faultbuf * const fb = curlwp->l_md.md_onfault;
    133 	if (fb != NULL)
    134 		curlwp->l_md.md_onfault = NULL;
    135 	return fb;
    136 }
    137 #endif
    138 
    139 /* exec_machdep.c */
    140 void aarch64_setregs_ptrauth(struct lwp *, bool);
    141 
    142 /* fpu.c */
    143 void fpu_attach(struct cpu_info *);
    144 struct fpreg;
    145 void load_fpregs(const struct fpreg *);
    146 void save_fpregs(struct fpreg *);
    147 
    148 #ifdef TRAP_SIGDEBUG
    149 #define do_trapsignal(l, signo, code, addr, trap) \
    150     do_trapsignal1(__func__, __LINE__, tf, l, signo, code, addr, trap)
    151 #else
    152 #define do_trapsignal(l, signo, code, addr, trap) \
    153     do_trapsignal1(l, signo, code, addr, trap)
    154 #endif
    155 
    156 void do_trapsignal1(
    157 #ifdef TRAP_SIGDEBUG
    158     const char *func, size_t line, struct trapframe *tf,
    159 #endif
    160     struct lwp *l, int signo, int code, void *addr, int trap);
    161 
    162 const char *eclass_trapname(uint32_t);
    163 
    164 #include <sys/pcu.h>
    165 
    166 extern const pcu_ops_t pcu_fpu_ops;
    167 
    168 static inline bool
    169 fpu_used_p(lwp_t *l)
    170 {
    171 	return pcu_valid_p(&pcu_fpu_ops, l);
    172 }
    173 
    174 static inline void
    175 fpu_save(lwp_t *l)
    176 {
    177 	pcu_save(&pcu_fpu_ops, l);
    178 }
    179 
    180 static inline void
    181 fpu_load(lwp_t *l)
    182 {
    183 	pcu_load(&pcu_fpu_ops);
    184 }
    185 
    186 static inline void
    187 fpu_discard(lwp_t *l, bool usesw)
    188 {
    189 	pcu_discard(&pcu_fpu_ops, l, usesw);
    190 }
    191 
    192 #endif /* _AARCH64_MACHDEP_H_ */
    193