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kern_cpu_60.c revision 1.1.2.3 
      1 /*	$NetBSD: kern_cpu_60.c,v 1.1.2.3 2018/03/18 01:17:29 pgoyette Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2018 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: kern_cpu_60.c,v 1.1.2.3 2018/03/18 01:17:29 pgoyette Exp $");
     34 
     35 #ifdef _KERNEL_OPT
     36 #include "opt_cpu_ucode.h"
     37 #include "opt_compat_netbsd.h"
     38 #endif
     39 
     40 #include <sys/param.h>
     41 #include <sys/types.h>
     42 #include <sys/systm.h>
     43 #include <sys/errno.h>
     44 #include <sys/kauth.h>
     45 #include <sys/lwp.h>
     46 #include <sys/cpu.h>
     47 #include <sys/cpuio.h>
     48 
     49 #include <compat/common/compat_mod.h>
     50 
     51 static int
     52 compat6_cpuctl_ioctl(struct lwp *l, u_long cmd, void *data)
     53 {
     54 #if defined(CPU_UCODE) && defined(COMPAT_60)
     55 	int error;
     56 #endif
     57 
     58 	switch (cmd) {
     59 #if defined(CPU_UCODE) && defined(COMPAT_60)
     60 	case OIOC_CPU_UCODE_GET_VERSION:
     61 		return compat6_cpu_ucode_get_version(data);
     62 
     63 	case OIOC_CPU_UCODE_APPLY:
     64 		error = kauth_authorize_machdep(l->l_cred,
     65 		    KAUTH_MACHDEP_CPU_UCODE_APPLY, NULL, NULL, NULL, NULL);
     66 		if (error)
     67 			return error;
     68 		return compat6_cpu_ucode_apply(data);
     69 #endif
     70  	default:
     71 		return ENOTTY;
     72  	}
     73 }
     74 
     75 int
     76 kern_cpu_60_init(void)
     77 {
     78 
     79 	compat_cpuctl_ioctl = compat6_cpuctl_ioctl;
     80 	return 0;
     81 }
     82 
     83 int
     84 kern_cpu_60_fini(void)
     85 {
     86 
     87 	compat_cpuctl_ioctl = (void *)enosys;
     88 	return 0;
     89 }
     90