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cpu_ucode.c revision 1.3 
      1 /* $NetBSD: cpu_ucode.c,v 1.3 2012/10/17 20:19:55 drochner Exp $ */
      2 /*
      3  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Christoph Egger.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: cpu_ucode.c,v 1.3 2012/10/17 20:19:55 drochner Exp $");
     33 
     34 #include "opt_cpu_ucode.h"
     35 #include "opt_compat_netbsd.h"
     36 
     37 #include <sys/param.h>
     38 #include <sys/cpuio.h>
     39 #include <sys/cpu.h>
     40 
     41 #include <dev/firmload.h>
     42 
     43 #include <machine/cpuvar.h>
     44 #include <machine/cputypes.h>
     45 
     46 #include <x86/cpu_ucode.h>
     47 
     48 static struct cpu_ucode_softc ucode_softc;
     49 
     50 int
     51 cpu_ucode_get_version(struct cpu_ucode_version *data)
     52 {
     53 
     54 	switch (cpu_vendor) {
     55 	case CPUVENDOR_AMD:
     56 		return cpu_ucode_amd_get_version(data);
     57 	case CPUVENDOR_INTEL:
     58 		return cpu_ucode_intel_get_version(data);
     59 	default:
     60 		return EOPNOTSUPP;
     61 	}
     62 
     63 	return 0;
     64 }
     65 
     66 #ifdef COMPAT_60
     67 int
     68 compat6_cpu_ucode_get_version(struct compat6_cpu_ucode *data)
     69 {
     70 
     71 	switch (cpu_vendor) {
     72 	case CPUVENDOR_AMD:
     73 		return compat6_cpu_ucode_amd_get_version(data);
     74 	default:
     75 		return EOPNOTSUPP;
     76 	}
     77 
     78 	return 0;
     79 }
     80 #endif
     81 
     82 int
     83 cpu_ucode_md_open(firmware_handle_t *fwh, int loader_version, const char *fwname)
     84 {
     85 	switch (cpu_vendor) {
     86 	case CPUVENDOR_AMD:
     87 		return cpu_ucode_amd_firmware_open(fwh, fwname);
     88 	case CPUVENDOR_INTEL:
     89 		return cpu_ucode_intel_firmware_open(fwh, fwname);
     90 	default:
     91 		return EOPNOTSUPP;
     92 	}
     93 }
     94 
     95 int
     96 cpu_ucode_apply(const struct cpu_ucode *data)
     97 {
     98 	struct cpu_ucode_softc *sc = &ucode_softc;
     99 	int error;
    100 
    101 	sc->loader_version = data->loader_version;
    102 
    103 	error = cpu_ucode_load(sc, data->fwname);
    104 	if (error)
    105 		return error;
    106 
    107 	switch (cpu_vendor) {
    108 	case CPUVENDOR_AMD:
    109 		error = cpu_ucode_amd_apply(sc, data->cpu_nr);
    110 		break;
    111 	case CPUVENDOR_INTEL:
    112 		error = cpu_ucode_intel_apply(sc, data->cpu_nr);
    113 		break;
    114 	default:
    115 		return EOPNOTSUPP;
    116 	}
    117 
    118 	if (sc->sc_blob != NULL)
    119 		firmware_free(sc->sc_blob, 0);
    120 	sc->sc_blob = NULL;
    121 	sc->sc_blobsize = 0;
    122 	return error;
    123 }
    124 
    125 #ifdef COMPAT_60
    126 int
    127 compat6_cpu_ucode_apply(const struct compat6_cpu_ucode *data)
    128 {
    129 	struct cpu_ucode_softc *sc = &ucode_softc;
    130 	int error;
    131 
    132 	if (cpu_vendor != CPUVENDOR_AMD)
    133 		return EOPNOTSUPP;
    134 
    135 	sc->loader_version = CPU_UCODE_LOADER_AMD;
    136 	error = cpu_ucode_load(sc, data->fwname);
    137 	if (error)
    138 		return error;
    139 
    140 	error = cpu_ucode_amd_apply(sc, CPU_UCODE_ALL_CPUS);
    141 
    142 	if (sc->sc_blob != NULL)
    143 		firmware_free(sc->sc_blob, 0);
    144 	sc->sc_blob = NULL;
    145 	sc->sc_blobsize = 0;
    146 	return error;
    147 }
    148 #endif
    149