16fc729afSOlivier Houchard /*- 26fc729afSOlivier Houchard * Copyright (c) 1990 The Regents of the University of California. 36fc729afSOlivier Houchard * All rights reserved. 46fc729afSOlivier Houchard * 56fc729afSOlivier Houchard * Redistribution and use in source and binary forms, with or without 66fc729afSOlivier Houchard * modification, are permitted provided that the following conditions 76fc729afSOlivier Houchard * are met: 86fc729afSOlivier Houchard * 1. Redistributions of source code must retain the above copyright 96fc729afSOlivier Houchard * notice, this list of conditions and the following disclaimer. 106fc729afSOlivier Houchard * 2. Redistributions in binary form must reproduce the above copyright 116fc729afSOlivier Houchard * notice, this list of conditions and the following disclaimer in the 126fc729afSOlivier Houchard * documentation and/or other materials provided with the distribution. 13f04f6877SWarner Losh * 3. Neither the name of the University nor the names of its contributors 146fc729afSOlivier Houchard * may be used to endorse or promote products derived from this software 156fc729afSOlivier Houchard * without specific prior written permission. 166fc729afSOlivier Houchard * 176fc729afSOlivier Houchard * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 186fc729afSOlivier Houchard * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 196fc729afSOlivier Houchard * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 206fc729afSOlivier Houchard * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 216fc729afSOlivier Houchard * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 226fc729afSOlivier Houchard * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 236fc729afSOlivier Houchard * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 246fc729afSOlivier Houchard * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 256fc729afSOlivier Houchard * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 266fc729afSOlivier Houchard * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 276fc729afSOlivier Houchard * SUCH DAMAGE. 286fc729afSOlivier Houchard * 296fc729afSOlivier Houchard * from: @(#)sys_machdep.c 5.5 (Berkeley) 1/19/91 306fc729afSOlivier Houchard */ 316fc729afSOlivier Houchard 326fc729afSOlivier Houchard #include <sys/cdefs.h> 336fc729afSOlivier Houchard __FBSDID("$FreeBSD$"); 346fc729afSOlivier Houchard 3524c1c3bfSJonathan Anderson #include "opt_capsicum.h" 3674b5505eSRobert Watson 376fc729afSOlivier Houchard #include <sys/param.h> 386fc729afSOlivier Houchard #include <sys/systm.h> 394a144410SRobert Watson #include <sys/capsicum.h> 406fc729afSOlivier Houchard #include <sys/proc.h> 416fc729afSOlivier Houchard #include <sys/sysproto.h> 426fc729afSOlivier Houchard #include <sys/syscall.h> 436fc729afSOlivier Houchard #include <sys/sysent.h> 446fc729afSOlivier Houchard 45371853e5SOlivier Houchard #include <machine/sysarch.h> 46371853e5SOlivier Houchard 476fc729afSOlivier Houchard #ifndef _SYS_SYSPROTO_H_ 486fc729afSOlivier Houchard struct sysarch_args { 496fc729afSOlivier Houchard int op; 506fc729afSOlivier Houchard char *parms; 516fc729afSOlivier Houchard }; 526fc729afSOlivier Houchard #endif 536fc729afSOlivier Houchard 54371853e5SOlivier Houchard /* Prototypes */ 55371853e5SOlivier Houchard static int arm32_sync_icache (struct thread *, void *); 56371853e5SOlivier Houchard static int arm32_drain_writebuf(struct thread *, void *); 57371853e5SOlivier Houchard 58371853e5SOlivier Houchard static int 59371853e5SOlivier Houchard arm32_sync_icache(struct thread *td, void *args) 60371853e5SOlivier Houchard { 61371853e5SOlivier Houchard struct arm_sync_icache_args ua; 62371853e5SOlivier Houchard int error; 63371853e5SOlivier Houchard 64371853e5SOlivier Houchard if ((error = copyin(args, &ua, sizeof(ua))) != 0) 65371853e5SOlivier Houchard return (error); 66371853e5SOlivier Houchard 67371853e5SOlivier Houchard cpu_icache_sync_range(ua.addr, ua.len); 68371853e5SOlivier Houchard 69371853e5SOlivier Houchard td->td_retval[0] = 0; 70371853e5SOlivier Houchard return (0); 71371853e5SOlivier Houchard } 72371853e5SOlivier Houchard 73371853e5SOlivier Houchard static int 74371853e5SOlivier Houchard arm32_drain_writebuf(struct thread *td, void *args) 75371853e5SOlivier Houchard { 76371853e5SOlivier Houchard /* No args. */ 77371853e5SOlivier Houchard 78371853e5SOlivier Houchard td->td_retval[0] = 0; 79371853e5SOlivier Houchard cpu_drain_writebuf(); 80371853e5SOlivier Houchard return (0); 81371853e5SOlivier Houchard } 82371853e5SOlivier Houchard 83a74985cdSOlivier Houchard static int 84a74985cdSOlivier Houchard arm32_set_tp(struct thread *td, void *args) 85a74985cdSOlivier Houchard { 86a74985cdSOlivier Houchard 87cf1a573fSOleksandr Tymoshenko if (td != curthread) 88ae5b8077SWarner Losh td->td_md.md_tp = (register_t)args; 89cf1a573fSOleksandr Tymoshenko else 90cf1a573fSOleksandr Tymoshenko #ifndef ARM_TP_ADDRESS 91cf1a573fSOleksandr Tymoshenko set_tls(args); 92cf1a573fSOleksandr Tymoshenko #else 93cf1a573fSOleksandr Tymoshenko *(register_t *)ARM_TP_ADDRESS = (register_t)args; 94cf1a573fSOleksandr Tymoshenko #endif 95a74985cdSOlivier Houchard return (0); 96a74985cdSOlivier Houchard } 97a74985cdSOlivier Houchard 98a74985cdSOlivier Houchard static int 99a74985cdSOlivier Houchard arm32_get_tp(struct thread *td, void *args) 100a74985cdSOlivier Houchard { 101a74985cdSOlivier Houchard 102cf1a573fSOleksandr Tymoshenko if (td != curthread) 103ae5b8077SWarner Losh td->td_retval[0] = td->td_md.md_tp; 104cf1a573fSOleksandr Tymoshenko else 105cf1a573fSOleksandr Tymoshenko #ifndef ARM_TP_ADDRESS 106cf1a573fSOleksandr Tymoshenko td->td_retval[0] = (register_t)get_tls(); 107cf1a573fSOleksandr Tymoshenko #else 108cf1a573fSOleksandr Tymoshenko td->td_retval[0] = *(register_t *)ARM_TP_ADDRESS; 109cf1a573fSOleksandr Tymoshenko #endif 110a74985cdSOlivier Houchard return (0); 111a74985cdSOlivier Houchard } 112a74985cdSOlivier Houchard 1136fc729afSOlivier Houchard int 1146fc729afSOlivier Houchard sysarch(td, uap) 1156fc729afSOlivier Houchard struct thread *td; 1166fc729afSOlivier Houchard register struct sysarch_args *uap; 1176fc729afSOlivier Houchard { 118371853e5SOlivier Houchard int error; 119371853e5SOlivier Houchard 12024c1c3bfSJonathan Anderson #ifdef CAPABILITY_MODE 12174b5505eSRobert Watson /* 12212bc222eSJonathan Anderson * When adding new operations, add a new case statement here to 12312bc222eSJonathan Anderson * explicitly indicate whether or not the operation is safe to 12412bc222eSJonathan Anderson * perform in capability mode. 12574b5505eSRobert Watson */ 12674b5505eSRobert Watson if (IN_CAPABILITY_MODE(td)) { 12774b5505eSRobert Watson switch (uap->op) { 12874b5505eSRobert Watson case ARM_SYNC_ICACHE: 12974b5505eSRobert Watson case ARM_DRAIN_WRITEBUF: 13074b5505eSRobert Watson case ARM_SET_TP: 13174b5505eSRobert Watson case ARM_GET_TP: 13274b5505eSRobert Watson break; 13374b5505eSRobert Watson 13474b5505eSRobert Watson default: 135a417d4a4SDag-Erling Smørgrav #ifdef KTRACE 136a417d4a4SDag-Erling Smørgrav if (KTRPOINT(td, KTR_CAPFAIL)) 1373fded357SPawel Jakub Dawidek ktrcapfail(CAPFAIL_SYSCALL, NULL, NULL); 138a417d4a4SDag-Erling Smørgrav #endif 13974b5505eSRobert Watson return (ECAPMODE); 14074b5505eSRobert Watson } 14174b5505eSRobert Watson } 14274b5505eSRobert Watson #endif 14374b5505eSRobert Watson 144371853e5SOlivier Houchard switch (uap->op) { 145371853e5SOlivier Houchard case ARM_SYNC_ICACHE: 146371853e5SOlivier Houchard error = arm32_sync_icache(td, uap->parms); 147371853e5SOlivier Houchard break; 148371853e5SOlivier Houchard case ARM_DRAIN_WRITEBUF: 149371853e5SOlivier Houchard error = arm32_drain_writebuf(td, uap->parms); 150371853e5SOlivier Houchard break; 151a74985cdSOlivier Houchard case ARM_SET_TP: 152a74985cdSOlivier Houchard error = arm32_set_tp(td, uap->parms); 153a74985cdSOlivier Houchard break; 154a74985cdSOlivier Houchard case ARM_GET_TP: 155a74985cdSOlivier Houchard error = arm32_get_tp(td, uap->parms); 156a74985cdSOlivier Houchard break; 157371853e5SOlivier Houchard default: 158371853e5SOlivier Houchard error = EINVAL; 159371853e5SOlivier Houchard break; 160371853e5SOlivier Houchard } 161371853e5SOlivier Houchard return (error); 1626fc729afSOlivier Houchard } 163