diff options
Diffstat (limited to 'src/VBox/Runtime/r3/darwin/RTMpGetDescription-generic.cpp')
| -rw-r--r-- | src/VBox/Runtime/r3/darwin/RTMpGetDescription-generic.cpp | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/darwin/RTMpGetDescription-generic.cpp b/src/VBox/Runtime/r3/darwin/RTMpGetDescription-generic.cpp new file mode 100644 index 00000000..47ea9601 --- /dev/null +++ b/src/VBox/Runtime/r3/darwin/RTMpGetDescription-generic.cpp @@ -0,0 +1,173 @@ +/* $Id: RTMpGetDescription-generic.cpp $ */ +/** @file + * IPRT - Multiprocessor, RTMpGetDescription for darwin/arm. + */ + +/* + * Copyright (C) 2009-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <iprt/mp.h> +#include "internal/iprt.h" +#include <iprt/err.h> +#include <iprt/string.h> + +#include <sys/sysctl.h> +#if defined(RT_ARCH_ARM64) +# include <IOKit/IOKitLib.h> +#endif + + +RTDECL(int) RTMpGetDescription(RTCPUID idCpu, char *pszBuf, size_t cbBuf) +{ + /* + * Check that the specified cpu is valid & online. + */ + if (idCpu != NIL_RTCPUID && !RTMpIsCpuOnline(idCpu)) + return RTMpIsCpuPossible(idCpu) + ? VERR_CPU_OFFLINE + : VERR_CPU_NOT_FOUND; + + /* + * For ARM there are typically two different types of cores, so look up the + * processor in the IODeviceTree and get the core name and type from there + * if we can. + */ + char szExtra[256]; + size_t cchExtra = 0; + +#if defined(RT_ARCH_ARM64) + char szArmCpuPath[64]; + RTStrPrintf(szArmCpuPath, sizeof(szArmCpuPath), "IODeviceTree:/cpus/cpu%x", idCpu); /** @todo Hex? M1 Max only has 10 cores... */ + io_registry_entry_t hIoRegEntry = IORegistryEntryFromPath(kIOMasterPortDefault, szArmCpuPath); + if (hIoRegEntry != MACH_PORT_NULL) + { + /* This property is typically "E" or "P". Don't know why it's mapped + to a CFDataRef rather than a CFStringRef... */ + CFTypeRef hValRef = IORegistryEntryCreateCFProperty(hIoRegEntry, CFSTR("cluster-type"), kCFAllocatorDefault, kNilOptions); + if (hValRef) + { + if (CFGetTypeID(hValRef) == CFDataGetTypeID()) + { + size_t const cbData = CFDataGetLength((CFDataRef)hValRef); + uint8_t const * const pbData = (uint8_t const *)CFDataGetBytePtr((CFDataRef)hValRef); + if (cbData > 0 && pbData != NULL) + { + int rc = RTStrValidateEncodingEx((const char *)pbData, cbData, RTSTR_VALIDATE_ENCODING_ZERO_TERMINATED); + AssertMsgRC(rc, ("%p LB %#zx: %.*Rhxs\n", pbData, cbData, cbData, pbData)); + if (RT_SUCCESS(rc)) + { + RTStrCopy(&szExtra[1], sizeof(szExtra) - 1, (const char *)pbData); + szExtra[0] = ' '; + cchExtra = strlen(szExtra); + } + } + } + else + AssertMsgFailed(("%p=%#lx\n", hValRef, CFGetTypeID(hValRef))); + + CFRelease(hValRef); + } + + /* The compatible property is an "array" of zero terminated strings. + For the M1 mini the first entry is either "apple,firestorm" (P cores) + or "apple,icestorm" (E cores). We extract the bits after the comma + and append it to the extra string. (Again, dunno why it's a CFDataRef.) */ + hValRef = IORegistryEntryCreateCFProperty(hIoRegEntry, CFSTR("compatible"), kCFAllocatorDefault, 0); + if (hValRef) + { + if (CFGetTypeID(hValRef) == CFDataGetTypeID()) + { + size_t const cbData = CFDataGetLength((CFDataRef)hValRef); + uint8_t const * const pbData = (uint8_t const *)CFDataGetBytePtr((CFDataRef)hValRef); + if (cbData > 0 && pbData != NULL) + { + Assert(pbData[cbData - 1] == '\0'); + if (pbData[cbData - 1] == '\0') + { + size_t offData = 0; + while (offData < cbData) + { + const char *psz = (const char *)&pbData[offData]; + size_t const cch = strlen(psz); + + if (RTStrStartsWith(psz, "apple,")) + { + psz += sizeof("apple,") - 1; + psz = RTStrStripL(psz); + if (*psz) + { + if (RTStrIsValidEncoding(psz)) + cchExtra += RTStrPrintf(&szExtra[cchExtra], sizeof(szExtra) - cchExtra, " (%s)", psz); + else + AssertFailed(); + } + } + + /* advance */ + offData += cch + 1; + } + } + } + } + else + AssertMsgFailed(("%p=%#lx\n", hValRef, CFGetTypeID(hValRef))); + CFRelease(hValRef); + } + + IOObjectRelease(hIoRegEntry); + } +#endif + szExtra[cchExtra] = '\0'; + + /* + * Just use the sysctl machdep.cpu.brand_string value for now. + */ + char szBrand[128] = {0}; + size_t cb = sizeof(szBrand); + int rc = sysctlbyname("machdep.cpu.brand_string", &szBrand, &cb, NULL, 0); + if (rc == -1) + szBrand[0] = '\0'; + + char *pszStripped = RTStrStrip(szBrand); + if (*pszStripped == '\0') + pszStripped = strcpy(szBrand, "Unknown"); + + rc = RTStrCopy(pszBuf, cbBuf, pszStripped); + if (cchExtra > 0 && RT_SUCCESS(rc)) + rc = RTStrCat(pszBuf, cbBuf, szExtra); + return rc; +} +RT_EXPORT_SYMBOL(RTMpGetDescription); + |