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machdep.h revision 1.3 
      1 /*	$NetBSD: machdep.h,v 1.3 2018/07/19 18:27:26 christos 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 
     40 static inline paddr_t
     41 aarch64_kern_vtophys(vaddr_t va)
     42 {
     43 	extern u_long kern_vtopdiff;
     44 
     45 	return va - kern_vtopdiff;
     46 }
     47 
     48 static inline vaddr_t
     49 aarch64_kern_phystov(paddr_t pa)
     50 {
     51 	extern u_long kern_vtopdiff;
     52 
     53 	return pa + kern_vtopdiff;
     54 }
     55 
     56 #define KERN_VTOPHYS(va)	aarch64_kern_vtophys(va)
     57 #define KERN_PHYSTOV(pa)	aarch64_kern_phystov(pa)
     58 
     59 extern paddr_t physical_start;
     60 extern paddr_t physical_end;
     61 
     62 extern void (*cpu_reset_address0)(void);
     63 extern void (*cpu_reset_address)(void);
     64 extern void (*cpu_powerdown_address)(void);
     65 
     66 extern char *booted_kernel;
     67 
     68 #ifdef MULTIPROCESSOR
     69 extern u_int arm_cpu_max;
     70 #endif
     71 
     72 vaddr_t initarm_common(vaddr_t, vsize_t, const struct boot_physmem *, size_t);
     73 
     74 void parse_mi_bootargs(char *);
     75 void dumpsys(void);
     76 
     77 struct trapframe;
     78 
     79 /* fault.c */
     80 void data_abort_handler(struct trapframe *, uint32_t);
     81 
     82 /* trap.c */
     83 void lwp_trampoline(void);
     84 void cpu_dosoftints(void);
     85 void cpu_switchto_softint(struct lwp *, int);
     86 void dosoftints(void);
     87 void trap_doast(struct trapframe *);
     88 
     89 void trap_el1t_sync(struct trapframe *);
     90 void trap_el1t_irq(struct trapframe *);
     91 void trap_el1t_fiq(struct trapframe *);
     92 void trap_el1t_error(struct trapframe *);
     93 void trap_el1h_sync(struct trapframe *);
     94 void trap_el1h_fiq(struct trapframe *);
     95 void trap_el1h_error(struct trapframe *);
     96 void trap_el0_sync(struct trapframe *);
     97 void trap_el0_fiq(struct trapframe *);
     98 void trap_el0_error(struct trapframe *);
     99 void trap_el0_32sync(struct trapframe *);
    100 void trap_el0_32fiq(struct trapframe *);
    101 void trap_el0_32error(struct trapframe *);
    102 void interrupt(struct trapframe *);
    103 
    104 void ucas_ras_check(struct trapframe *);
    105 
    106 /* cpu_onfault */
    107 int cpu_set_onfault(struct faultbuf *) __returns_twice;
    108 void cpu_jump_onfault(struct trapframe *, const struct faultbuf *, int);
    109 
    110 static inline void
    111 cpu_unset_onfault(void)
    112 {
    113 	curlwp->l_md.md_onfault = NULL;
    114 }
    115 
    116 static inline void
    117 cpu_enable_onfault(struct faultbuf *fb)
    118 {
    119 	curlwp->l_md.md_onfault = fb;
    120 }
    121 
    122 static inline struct faultbuf *
    123 cpu_disable_onfault(void)
    124 {
    125 	struct faultbuf * const fb = curlwp->l_md.md_onfault;
    126 	if (fb != NULL)
    127 		curlwp->l_md.md_onfault = NULL;
    128 	return fb;
    129 }
    130 
    131 /* fpu.c */
    132 void fpu_attach(struct cpu_info *);
    133 struct fpreg;
    134 void load_fpregs(struct fpreg *);
    135 void save_fpregs(struct fpreg *);
    136 
    137 #ifdef TRAP_SIGDEBUG
    138 #define do_trapsignal(l, signo, code, addr, trap) \
    139     do_trapsignal1(__func__, __LINE__, tf, l, signo, code, addr, trap)
    140 #else
    141 #define do_trapsignal(l, signo, code, addr, trap) \
    142     do_trapsignal1(l, signo, code, addr, trap)
    143 #endif
    144 
    145 void do_trapsignal1(
    146 #ifdef TRAP_SIGDEBUG
    147     const char *func, size_t line, struct trapframe *tf,
    148 #endif
    149     struct lwp *l, int signo, int code, void *addr, int trap);
    150 
    151 const char *eclass_trapname(uint32_t);
    152 
    153 #include <sys/pcu.h>
    154 
    155 extern const pcu_ops_t pcu_fpu_ops;
    156 
    157 static inline bool
    158 fpu_used_p(lwp_t *l)
    159 {
    160 	return pcu_valid_p(&pcu_fpu_ops, l);
    161 }
    162 
    163 static inline void
    164 fpu_save(lwp_t *l)
    165 {
    166 	pcu_save(&pcu_fpu_ops, l);
    167 }
    168 
    169 static inline void
    170 fpu_load(lwp_t *l)
    171 {
    172 	pcu_load(&pcu_fpu_ops);
    173 }
    174 
    175 static inline void
    176 fpu_discard(lwp_t *l, bool usesw)
    177 {
    178 	pcu_discard(&pcu_fpu_ops, l, usesw);
    179 }
    180 
    181 #endif /* _AARCH64_MACHDEP_H_ */
    182