52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
#pragma once
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#include "stdint.h"
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#define PCI_CONFIG_ADDRESS 0xCF8
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#define PCI_CONFIG_DATA 0xCFC
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typedef struct pci_device {
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uint8_t bus;
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uint8_t slot;
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uint8_t func;
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uint16_t vendor_id;
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uint16_t device_id;
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uint8_t class_code;
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uint8_t subclass;
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uint8_t prog_if;
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uint8_t header_type;
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} pci_device_t;
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typedef struct gpu_info {
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uint16_t vendor_id;
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uint16_t device_id;
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uint8_t bus;
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uint8_t slot;
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uint8_t func;
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uint32_t vram_mb;
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char vendor_name[32];
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char model_name[64];
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} gpu_info_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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uint32_t pci_read_config_dword(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset);
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void pci_write_config_dword(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset, uint32_t val);
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uint16_t pci_get_vendor_id(uint8_t bus, uint8_t slot, uint8_t func);
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uint16_t pci_get_device_id(uint8_t bus, uint8_t slot, uint8_t func);
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uint32_t pci_get_bar_size(uint8_t bus, uint8_t slot, uint8_t func, uint8_t bar_idx);
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const char *pci_class_to_string(uint8_t class_code, uint8_t subclass);
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const char *pci_vendor_to_string(uint16_t vendor_id);
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int pci_detect_gpu(gpu_info_t *out_gpu);
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typedef void (*pci_scan_callback_t)(const pci_device_t *dev);
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void pci_scan_bus(pci_scan_callback_t callback);
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#ifdef __cplusplus
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}
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#endif
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