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machdep.h revision 1.4 
      1 /*	$NetBSD: machdep.h,v 1.4 2018/08/05 06:48:50 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 
     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 void cpu_kernel_vm_init(paddr_t, psize_t);
     74 
     75 void parse_mi_bootargs(char *);
     76 void dumpsys(void);
     77 
     78 struct trapframe;
     79 
     80 /* fault.c */
     81 void data_abort_handler(struct trapframe *, uint32_t);
     82 
     83 /* trap.c */
     84 void lwp_trampoline(void);
     85 void cpu_dosoftints(void);
     86 void cpu_switchto_softint(struct lwp *, int);
     87 void dosoftints(void);
     88 void trap_doast(struct trapframe *);
     89 
     90 void trap_el1t_sync(struct trapframe *);
     91 void trap_el1t_irq(struct trapframe *);
     92 void trap_el1t_fiq(struct trapframe *);
     93 void trap_el1t_error(struct trapframe *);
     94 void trap_el1h_sync(struct trapframe *);
     95 void trap_el1h_fiq(struct trapframe *);
     96 void trap_el1h_error(struct trapframe *);
     97 void trap_el0_sync(struct trapframe *);
     98 void trap_el0_fiq(struct trapframe *);
     99 void trap_el0_error(struct trapframe *);
    100 void trap_el0_32sync(struct trapframe *);
    101 void trap_el0_32fiq(struct trapframe *);
    102 void trap_el0_32error(struct trapframe *);
    103 void interrupt(struct trapframe *);
    104 
    105 void ucas_ras_check(struct trapframe *);
    106 
    107 /* cpu_onfault */
    108 int cpu_set_onfault(struct faultbuf *) __returns_twice;
    109 void cpu_jump_onfault(struct trapframe *, const struct faultbuf *, int);
    110 
    111 static inline void
    112 cpu_unset_onfault(void)
    113 {
    114 	curlwp->l_md.md_onfault = NULL;
    115 }
    116 
    117 static inline void
    118 cpu_enable_onfault(struct faultbuf *fb)
    119 {
    120 	curlwp->l_md.md_onfault = fb;
    121 }
    122 
    123 static inline struct faultbuf *
    124 cpu_disable_onfault(void)
    125 {
    126 	struct faultbuf * const fb = curlwp->l_md.md_onfault;
    127 	if (fb != NULL)
    128 		curlwp->l_md.md_onfault = NULL;
    129 	return fb;
    130 }
    131 
    132 /* fpu.c */
    133 void fpu_attach(struct cpu_info *);
    134 struct fpreg;
    135 void load_fpregs(struct fpreg *);
    136 void save_fpregs(struct fpreg *);
    137 
    138 #ifdef TRAP_SIGDEBUG
    139 #define do_trapsignal(l, signo, code, addr, trap) \
    140     do_trapsignal1(__func__, __LINE__, tf, l, signo, code, addr, trap)
    141 #else
    142 #define do_trapsignal(l, signo, code, addr, trap) \
    143     do_trapsignal1(l, signo, code, addr, trap)
    144 #endif
    145 
    146 void do_trapsignal1(
    147 #ifdef TRAP_SIGDEBUG
    148     const char *func, size_t line, struct trapframe *tf,
    149 #endif
    150     struct lwp *l, int signo, int code, void *addr, int trap);
    151 
    152 const char *eclass_trapname(uint32_t);
    153 
    154 #include <sys/pcu.h>
    155 
    156 extern const pcu_ops_t pcu_fpu_ops;
    157 
    158 static inline bool
    159 fpu_used_p(lwp_t *l)
    160 {
    161 	return pcu_valid_p(&pcu_fpu_ops, l);
    162 }
    163 
    164 static inline void
    165 fpu_save(lwp_t *l)
    166 {
    167 	pcu_save(&pcu_fpu_ops, l);
    168 }
    169 
    170 static inline void
    171 fpu_load(lwp_t *l)
    172 {
    173 	pcu_load(&pcu_fpu_ops);
    174 }
    175 
    176 static inline void
    177 fpu_discard(lwp_t *l, bool usesw)
    178 {
    179 	pcu_discard(&pcu_fpu_ops, l, usesw);
    180 }
    181 
    182 #endif /* _AARCH64_MACHDEP_H_ */
    183