19 lines
619 B
C
19 lines
619 B
C
#include <kernel/pci.h>
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struct pci_config_space *pcie_find_device(struct mcfg *mcfg, uint8_t class, uint8_t subclass) {
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int entries = (mcfg->h.Length - 44) / 16;
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for (int i = 0; i < entries; i++) {
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uint32_t addr = (uint32_t)mcfg->entries[i].base_addr;
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for (int j = 0; j < 256; j++) {
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for (int k = 0; k < 8; k++) {
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struct pci_config_space *cfg = (struct pci_config_space *)PCI_ADDR(addr, i, j, k);
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if (cfg->class == class && cfg->subclass == subclass) {
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return cfg;
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}
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}
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}
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}
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return 0;
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}
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