/* SPDX-License-Identifier: GPL-2.0-only */ #include <pci/pci.h> #include "msrtool.h" static struct cpuid_t id; struct cpuid_t *cpuid(void) { uint32_t outeax; uint32_t outebx; /* First, we need determine which vendor we have */ #if defined(__DARWIN__) && !defined(__LP64__) asm volatile ( "pushl %%ebx \n" "cpuid \n" "popl %%ebx \n" : "=b" (outebx) : "a" (0) : "%ecx", "%edx" ); #else asm ("cpuid" : "=b" (outebx) : "a" (0) : "%ecx", "%edx"); #endif id.vendor = outebx; /* Then, identificate CPU itself */ #if defined(__DARWIN__) && !defined(__LP64__) asm volatile ( "pushl %%ebx \n" "cpuid \n" "popl %%ebx \n" : "=a" (outeax) : "a" (1) : "%ecx", "%edx" ); #else asm ("cpuid" : "=a" (outeax) : "a" (1) : "%ebx", "%ecx", "%edx"); #endif id.stepping = outeax & 0xf; outeax >>= 4; id.model = outeax & 0xf; outeax >>= 4; id.family = outeax & 0xf; outeax >>= 8; id.ext_model = outeax & 0xf; outeax >>= 4; id.ext_family = outeax & 0xff; if ((0xf == id.family) || ((VENDOR_INTEL == id.vendor) && (0x6 == id.family))) { /* Intel says always do this, AMD says only for family f */ id.model |= (id.ext_model << 4); id.family += id.ext_family; } printf_verbose("CPU: family %x, model %x, stepping %x\n", id.family, id.model, id.stepping); return &id; } struct pci_dev *pci_dev_find(uint16_t vendor, uint16_t device) { struct pci_dev *temp; struct pci_filter filter; pci_filter_init(NULL, &filter); filter.vendor = vendor; filter.device = device; for (temp = pacc->devices; temp; temp = temp->next) if (pci_filter_match(&filter, temp)) return temp; return NULL; }