Pull out card functions from evga-card

card.h

@@ -0,0 +1,22 @@
+struct card_info {
+	char *card_name;					/* The 'nice' name of the card */
+	char *pci_id;						/* PCI bus address in domain:bus:device.function format. May be shortened (e.g. c:00.0) */
+	char *pci_dev_path;                 /* Path to the PCI device file */
+	void *bar0_mmap;                    /* Mmap of the PCI BAR0 */
+	unsigned short pci_device_id;		/* The device ID of the card, i.e. corresponds to the NVIDIA model number */
+	char *i2c_dev_path;					/* Path to the i2c device file */
+	int i2c_fd;							/* File descriptor for the i2c device file, for re-use */
+	int product_id;						/* EVGA internal product ID, as reported by the iCX3 controller */
+	void *nvml_device;					/* Pointer to nvmlDevice_t for use in NVML calls */
+};
+
+struct gpu_pci_info {
+	char *card_name;
+	unsigned short vendor_id;
+	unsigned short device_id;
+	unsigned short subvendor_id;
+	unsigned short subdevice_id;
+};
+
+unsigned short read_pci_id(char *device_path, char *field);
+char *read_nvidia_pci_address(char *device_path);