diff options
author | cognet <cognet@FreeBSD.org> | 2004-09-23 21:56:01 +0000 |
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committer | cognet <cognet@FreeBSD.org> | 2004-09-23 21:56:01 +0000 |
commit | 7dea9853065402ecce5f90e87f82c48681dff709 (patch) | |
tree | 8cae539484cbbc5d2e2900b8d425ccb081d20bb4 /sys | |
parent | 639630ead726f5222ab57c8eec28eded349ed6e5 (diff) | |
download | FreeBSD-src-7dea9853065402ecce5f90e87f82c48681dff709.zip FreeBSD-src-7dea9853065402ecce5f90e87f82c48681dff709.tar.gz |
Add MD syscalls to sync the icache and to drain the write buffer.
Obtained from: NetBSD
Diffstat (limited to 'sys')
-rw-r--r-- | sys/arm/arm/sys_machdep.c | 48 | ||||
-rw-r--r-- | sys/arm/include/sysarch.h | 66 |
2 files changed, 113 insertions, 1 deletions
diff --git a/sys/arm/arm/sys_machdep.c b/sys/arm/arm/sys_machdep.c index 7db18e7..ed8960c 100644 --- a/sys/arm/arm/sys_machdep.c +++ b/sys/arm/arm/sys_machdep.c @@ -43,6 +43,8 @@ __FBSDID("$FreeBSD$"); #include <sys/syscall.h> #include <sys/sysent.h> +#include <machine/sysarch.h> + #ifndef _SYS_SYSPROTO_H_ struct sysarch_args { int op; @@ -50,11 +52,55 @@ struct sysarch_args { }; #endif +/* Prototypes */ +static int arm32_sync_icache (struct thread *, void *); +static int arm32_drain_writebuf(struct thread *, void *); + +static int +arm32_sync_icache(struct thread *td, void *args) +{ + struct arm_sync_icache_args ua; + int error; + + if ((error = copyin(args, &ua, sizeof(ua))) != 0) + return (error); + + cpu_icache_sync_range(ua.addr, ua.len); + + td->td_retval[0] = 0; + return(0); +} + +static int +arm32_drain_writebuf(struct thread *td, void *args) +{ + /* No args. */ + + td->td_retval[0] = 0; + cpu_drain_writebuf(); + return(0); +} + int sysarch(td, uap) struct thread *td; register struct sysarch_args *uap; { - return (0); + int error; + + switch (uap->op) { + case ARM_SYNC_ICACHE : + error = arm32_sync_icache(td, uap->parms); + break; + + case ARM_DRAIN_WRITEBUF : + error = arm32_drain_writebuf(td, uap->parms); + break; + + default: + error = EINVAL; + break; + } + return (error); } diff --git a/sys/arm/include/sysarch.h b/sys/arm/include/sysarch.h new file mode 100644 index 0000000..8ff3f18 --- /dev/null +++ b/sys/arm/include/sysarch.h @@ -0,0 +1,66 @@ +/* $NetBSD: sysarch.h,v 1.5 2003/09/11 09:40:12 kleink Exp $ */ + +/* + * Copyright (c) 1996-1997 Mark Brinicombe. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Mark Brinicombe. + * 4. The name of the company nor the name of the author may be used to + * endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* $FreeBSD$ */ + +#ifndef _ARM_SYSARCH_H_ +#define _ARM_SYSARCH_H_ + +#include <sys/cdefs.h> + +/* + * Pickup definition of uintptr_t + */ +#include <sys/stdint.h> + +/* + * Architecture specific syscalls (arm) + */ + +#define ARM_SYNC_ICACHE 0 +#define ARM_DRAIN_WRITEBUF 1 + +struct arm_sync_icache_args { + uintptr_t addr; /* Virtual start address */ + size_t len; /* Region size */ +}; + +#ifndef _KERNEL +__BEGIN_DECLS +int arm_sync_icache (u_int addr, int len); +int arm_drain_writebuf (void); +__END_DECLS +#endif + +#endif /* !_ARM_SYSARCH_H_ */ |