| /* 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; |
| } |