aboutsummaryrefslogtreecommitdiff
path: root/usr.sbin/bhyve/xmsr.c
diff options
context:
space:
mode:
Diffstat (limited to 'usr.sbin/bhyve/xmsr.c')
-rw-r--r--usr.sbin/bhyve/xmsr.c245
1 files changed, 0 insertions, 245 deletions
diff --git a/usr.sbin/bhyve/xmsr.c b/usr.sbin/bhyve/xmsr.c
deleted file mode 100644
index 1a7f98ee222a..000000000000
--- a/usr.sbin/bhyve/xmsr.c
+++ /dev/null
@@ -1,245 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2011 NetApp, Inc.
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``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 NETAPP, INC 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.
- *
- * $FreeBSD$
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-
-#include <machine/cpufunc.h>
-#include <machine/vmm.h>
-#include <machine/specialreg.h>
-
-#include <vmmapi.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "debug.h"
-#include "xmsr.h"
-
-static int cpu_vendor_intel, cpu_vendor_amd, cpu_vendor_hygon;
-
-int
-emulate_wrmsr(struct vmctx *ctx, int vcpu, uint32_t num, uint64_t val)
-{
-
- if (cpu_vendor_intel) {
- switch (num) {
- case 0xd04: /* Sandy Bridge uncore PMCs */
- case 0xc24:
- return (0);
- case MSR_BIOS_UPDT_TRIG:
- return (0);
- case MSR_BIOS_SIGN:
- return (0);
- default:
- break;
- }
- } else if (cpu_vendor_amd || cpu_vendor_hygon) {
- switch (num) {
- case MSR_HWCR:
- /*
- * Ignore writes to hardware configuration MSR.
- */
- return (0);
-
- case MSR_NB_CFG1:
- case MSR_LS_CFG:
- case MSR_IC_CFG:
- return (0); /* Ignore writes */
-
- case MSR_PERFEVSEL0:
- case MSR_PERFEVSEL1:
- case MSR_PERFEVSEL2:
- case MSR_PERFEVSEL3:
- /* Ignore writes to the PerfEvtSel MSRs */
- return (0);
-
- case MSR_K7_PERFCTR0:
- case MSR_K7_PERFCTR1:
- case MSR_K7_PERFCTR2:
- case MSR_K7_PERFCTR3:
- /* Ignore writes to the PerfCtr MSRs */
- return (0);
-
- case MSR_P_STATE_CONTROL:
- /* Ignore write to change the P-state */
- return (0);
-
- default:
- break;
- }
- }
- return (-1);
-}
-
-int
-emulate_rdmsr(struct vmctx *ctx, int vcpu, uint32_t num, uint64_t *val)
-{
- int error = 0;
-
- if (cpu_vendor_intel) {
- switch (num) {
- case MSR_BIOS_SIGN:
- case MSR_IA32_PLATFORM_ID:
- case MSR_PKG_ENERGY_STATUS:
- case MSR_PP0_ENERGY_STATUS:
- case MSR_PP1_ENERGY_STATUS:
- case MSR_DRAM_ENERGY_STATUS:
- *val = 0;
- break;
- case MSR_RAPL_POWER_UNIT:
- /*
- * Use the default value documented in section
- * "RAPL Interfaces" in Intel SDM vol3.
- */
- *val = 0x000a1003;
- break;
- case MSR_IA32_FEATURE_CONTROL:
- /*
- * Windows guests check this MSR.
- * Set the lock bit to avoid writes
- * to this MSR.
- */
- *val = IA32_FEATURE_CONTROL_LOCK;
- break;
- default:
- error = -1;
- break;
- }
- } else if (cpu_vendor_amd || cpu_vendor_hygon) {
- switch (num) {
- case MSR_BIOS_SIGN:
- *val = 0;
- break;
- case MSR_HWCR:
- /*
- * Bios and Kernel Developer's Guides for AMD Families
- * 12H, 14H, 15H and 16H.
- */
- *val = 0x01000010; /* Reset value */
- *val |= 1 << 9; /* MONITOR/MWAIT disable */
- break;
-
- case MSR_NB_CFG1:
- case MSR_LS_CFG:
- case MSR_IC_CFG:
- /*
- * The reset value is processor family dependent so
- * just return 0.
- */
- *val = 0;
- break;
-
- case MSR_PERFEVSEL0:
- case MSR_PERFEVSEL1:
- case MSR_PERFEVSEL2:
- case MSR_PERFEVSEL3:
- /*
- * PerfEvtSel MSRs are not properly virtualized so just
- * return zero.
- */
- *val = 0;
- break;
-
- case MSR_K7_PERFCTR0:
- case MSR_K7_PERFCTR1:
- case MSR_K7_PERFCTR2:
- case MSR_K7_PERFCTR3:
- /*
- * PerfCtr MSRs are not properly virtualized so just
- * return zero.
- */
- *val = 0;
- break;
-
- case MSR_SMM_ADDR:
- case MSR_SMM_MASK:
- /*
- * Return the reset value defined in the AMD Bios and
- * Kernel Developer's Guide.
- */
- *val = 0;
- break;
-
- case MSR_P_STATE_LIMIT:
- case MSR_P_STATE_CONTROL:
- case MSR_P_STATE_STATUS:
- case MSR_P_STATE_CONFIG(0): /* P0 configuration */
- *val = 0;
- break;
-
- /*
- * OpenBSD guests test bit 0 of this MSR to detect if the
- * workaround for erratum 721 is already applied.
- * https://support.amd.com/TechDocs/41322_10h_Rev_Gd.pdf
- */
- case 0xC0011029:
- *val = 1;
- break;
-
- default:
- error = -1;
- break;
- }
- } else {
- error = -1;
- }
- return (error);
-}
-
-int
-init_msr(void)
-{
- int error;
- u_int regs[4];
- char cpu_vendor[13];
-
- do_cpuid(0, regs);
- ((u_int *)&cpu_vendor)[0] = regs[1];
- ((u_int *)&cpu_vendor)[1] = regs[3];
- ((u_int *)&cpu_vendor)[2] = regs[2];
- cpu_vendor[12] = '\0';
-
- error = 0;
- if (strcmp(cpu_vendor, "AuthenticAMD") == 0) {
- cpu_vendor_amd = 1;
- } else if (strcmp(cpu_vendor, "HygonGenuine") == 0) {
- cpu_vendor_hygon = 1;
- } else if (strcmp(cpu_vendor, "GenuineIntel") == 0) {
- cpu_vendor_intel = 1;
- } else {
- EPRINTLN("Unknown cpu vendor \"%s\"", cpu_vendor);
- error = -1;
- }
- return (error);
-}