1 /* SPDX-License-Identifier: GPL-2.0 2 * 3 * Header file for MCDI FW interaction for CDX bus. 4 * 5 * Copyright (C) 2022-2023, Advanced Micro Devices, Inc. 6 */ 7 8 #ifndef CDX_MCDI_FUNCTIONS_H 9 #define CDX_MCDI_FUNCTIONS_H 10 11 #include "mcdi.h" 12 #include "../cdx.h" 13 14 /** 15 * cdx_mcdi_get_num_buses - Get the total number of buses on 16 * the controller. 17 * @cdx: pointer to MCDI interface. 18 * 19 * Return: total number of buses available on the controller, 20 * <0 on failure 21 */ 22 int cdx_mcdi_get_num_buses(struct cdx_mcdi *cdx); 23 24 /** 25 * cdx_mcdi_get_num_devs - Get the total number of devices on 26 * a particular bus of the controller. 27 * @cdx: pointer to MCDI interface. 28 * @bus_num: Bus number. 29 * 30 * Return: total number of devices available on the bus, <0 on failure 31 */ 32 int cdx_mcdi_get_num_devs(struct cdx_mcdi *cdx, int bus_num); 33 34 /** 35 * cdx_mcdi_get_dev_config - Get configuration for a particular 36 * bus_num:dev_num 37 * @cdx: pointer to MCDI interface. 38 * @bus_num: Bus number. 39 * @dev_num: Device number. 40 * @dev_params: Pointer to cdx_dev_params, this is populated by this 41 * device with the configuration corresponding to the provided 42 * bus_num:dev_num. 43 * 44 * Return: 0 total number of devices available on the bus, <0 on failure 45 */ 46 int cdx_mcdi_get_dev_config(struct cdx_mcdi *cdx, 47 u8 bus_num, u8 dev_num, 48 struct cdx_dev_params *dev_params); 49 50 /** 51 * cdx_mcdi_reset_device - Reset cdx device represented by bus_num:dev_num 52 * @cdx: pointer to MCDI interface. 53 * @bus_num: Bus number. 54 * @dev_num: Device number. 55 * 56 * Return: 0 on success, <0 on failure 57 */ 58 int cdx_mcdi_reset_device(struct cdx_mcdi *cdx, 59 u8 bus_num, u8 dev_num); 60 61 #endif /* CDX_MCDI_FUNCTIONS_H */ 62