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machdep.h revision 1.6 
      1 /*	$NetBSD: machdep.h,v 1.6 2018/10/18 09:01:51 skrll 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 #ifdef MULTIPROCESSOR
     70 extern u_int arm_cpu_max;
     71 #endif
     72 
     73 vaddr_t initarm_common(vaddr_t, vsize_t, const struct boot_physmem *, size_t);
     74 void cpu_kernel_vm_init(paddr_t, psize_t);
     75 void uartputc(int);
     76 
     77 void parse_mi_bootargs(char *);
     78 void dumpsys(void);
     79 
     80 struct trapframe;
     81 
     82 /* fault.c */
     83 void data_abort_handler(struct trapframe *, uint32_t);
     84 
     85 /* trap.c */
     86 void lwp_trampoline(void);
     87 void cpu_dosoftints(void);
     88 void cpu_switchto_softint(struct lwp *, int);
     89 void dosoftints(void);
     90 void trap_doast(struct trapframe *);
     91 
     92 void trap_el1t_sync(struct trapframe *);
     93 void trap_el1t_irq(struct trapframe *);
     94 void trap_el1t_fiq(struct trapframe *);
     95 void trap_el1t_error(struct trapframe *);
     96 void trap_el1h_sync(struct trapframe *);
     97 void trap_el1h_fiq(struct trapframe *);
     98 void trap_el1h_error(struct trapframe *);
     99 void trap_el0_sync(struct trapframe *);
    100 void trap_el0_fiq(struct trapframe *);
    101 void trap_el0_error(struct trapframe *);
    102 void trap_el0_32sync(struct trapframe *);
    103 void trap_el0_32fiq(struct trapframe *);
    104 void trap_el0_32error(struct trapframe *);
    105 void interrupt(struct trapframe *);
    106 
    107 void ucas_ras_check(struct trapframe *);
    108 
    109 /* cpu_onfault */
    110 int cpu_set_onfault(struct faultbuf *) __returns_twice;
    111 void cpu_jump_onfault(struct trapframe *, const struct faultbuf *, int);
    112 
    113 #if defined(_KERNEL)
    114 static inline void
    115 cpu_unset_onfault(void)
    116 {
    117 	curlwp->l_md.md_onfault = NULL;
    118 }
    119 
    120 static inline void
    121 cpu_enable_onfault(struct faultbuf *fb)
    122 {
    123 	curlwp->l_md.md_onfault = fb;
    124 }
    125 
    126 static inline struct faultbuf *
    127 cpu_disable_onfault(void)
    128 {
    129 	struct faultbuf * const fb = curlwp->l_md.md_onfault;
    130 	if (fb != NULL)
    131 		curlwp->l_md.md_onfault = NULL;
    132 	return fb;
    133 }
    134 #endif
    135 
    136 /* fpu.c */
    137 void fpu_attach(struct cpu_info *);
    138 struct fpreg;
    139 void load_fpregs(struct fpreg *);
    140 void save_fpregs(struct fpreg *);
    141 
    142 #ifdef TRAP_SIGDEBUG
    143 #define do_trapsignal(l, signo, code, addr, trap) \
    144     do_trapsignal1(__func__, __LINE__, tf, l, signo, code, addr, trap)
    145 #else
    146 #define do_trapsignal(l, signo, code, addr, trap) \
    147     do_trapsignal1(l, signo, code, addr, trap)
    148 #endif
    149 
    150 void do_trapsignal1(
    151 #ifdef TRAP_SIGDEBUG
    152     const char *func, size_t line, struct trapframe *tf,
    153 #endif
    154     struct lwp *l, int signo, int code, void *addr, int trap);
    155 
    156 const char *eclass_trapname(uint32_t);
    157 
    158 #include <sys/pcu.h>
    159 
    160 extern const pcu_ops_t pcu_fpu_ops;
    161 
    162 static inline bool
    163 fpu_used_p(lwp_t *l)
    164 {
    165 	return pcu_valid_p(&pcu_fpu_ops, l);
    166 }
    167 
    168 static inline void
    169 fpu_save(lwp_t *l)
    170 {
    171 	pcu_save(&pcu_fpu_ops, l);
    172 }
    173 
    174 static inline void
    175 fpu_load(lwp_t *l)
    176 {
    177 	pcu_load(&pcu_fpu_ops);
    178 }
    179 
    180 static inline void
    181 fpu_discard(lwp_t *l, bool usesw)
    182 {
    183 	pcu_discard(&pcu_fpu_ops, l, usesw);
    184 }
    185 
    186 #endif /* _AARCH64_MACHDEP_H_ */
    187