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Syscall frontend for mtrr functions.

This commit is contained in:
fvdl 2001-09-10 10:13:04 +00:00
parent 38db8748a4
commit 86b144f468
1 changed files with 69 additions and 2 deletions
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71
sys/arch/i386/i386/sys_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: sys_machdep.c,v 1.59 2001/06/17 21:01:36 sommerfeld Exp $ */
/* $NetBSD: sys_machdep.c,v 1.60 2001/09/10 10:13:04 fvdl Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -39,6 +39,7 @@
#include "opt_vm86.h"
#include "opt_user_ldt.h"
#include "opt_perfctrs.h"
#include "opt_mtrr.h"
#include <sys/param.h>
#include <sys/systm.h>
@ -64,6 +65,7 @@
#include <machine/psl.h>
#include <machine/reg.h>
#include <machine/sysarch.h>
#include <machine/mtrr.h>
#ifdef VM86
#include <machine/vm86.h>
@ -78,6 +80,8 @@ extern struct vm_map *kernel_map;
int i386_iopl __P((struct proc *, void *, register_t *));
int i386_get_ioperm __P((struct proc *, void *, register_t *));
int i386_set_ioperm __P((struct proc *, void *, register_t *));
int i386_get_mtrr __P((struct proc *, void *, register_t *));
int i386_set_mtrr __P((struct proc *, void *, register_t *));
#ifdef USER_LDT
int
@ -356,6 +360,62 @@ i386_set_ioperm(p, args, retval)
return copyin(ua.iomap, pcb->pcb_iomap, sizeof(pcb->pcb_iomap));
}
#ifdef MTRR
int
i386_get_mtrr(struct proc *p, void *args, register_t *retval)
{
struct i386_get_mtrr_args ua;
int error, n;
if (mtrr_funcs == NULL)
return ENOSYS;
error = copyin(args, &ua, sizeof ua);
if (error != 0)
return error;
error = copyin(ua.n, &n, sizeof n);
if (error != 0)
return error;
error = mtrr_get(ua.mtrrp, &n, p, MTRR_GETSET_USER);
copyout(&n, ua.n, sizeof (int));
return error;
}
int
i386_set_mtrr(struct proc *p, void *args, register_t *retval)
{
int error, n;
struct i386_set_mtrr_args ua;
if (mtrr_funcs == NULL)
return ENOSYS;
error = suser(p->p_ucred, &p->p_acflag);
if (error != 0)
return error;
error = copyin(args, &ua, sizeof ua);
if (error != 0)
return error;
error = copyin(ua.n, &n, sizeof n);
if (error != 0)
return error;
error = mtrr_set(ua.mtrrp, &n, p, MTRR_GETSET_USER);
if (n != 0)
mtrr_commit();
copyout(&n, ua.n, sizeof n);
return error;
}
#endif
int
sys_sysarch(p, v, retval)
struct proc *p;
@ -396,7 +456,14 @@ sys_sysarch(p, v, retval)
error = i386_vm86(p, SCARG(uap, parms), retval);
break;
#endif
#ifdef MTRR
case I386_GET_MTRR:
error = i386_get_mtrr(p, SCARG(uap, parms), retval);
break;
case I386_SET_MTRR:
error = i386_set_mtrr(p, SCARG(uap, parms), retval);
break;
#endif
#ifdef PERFCTRS
case I386_PMC_INFO:
error = pmc_info(p, SCARG(uap, parms), retval);