1 /* 2 * Internal PCI functions, not exported outside drivers/pci 3 * 4 * Copyright (c) 2015 Google, Inc 5 * Written by Simon Glass <sjg@chromium.org> 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #ifndef __pci_internal_h 11 #define __pci_internal_h 12 13 /** 14 * dm_pciauto_prescan_setup_bridge() - Set up a bridge for scanning 15 * 16 * This gets a bridge ready so that its downstream devices can be scanned. 17 * It sets up the bus number and memory range registers. Once the scan is 18 * completed, dm_pciauto_postscan_setup_bridge() should be called. 19 * 20 * @dev: Bridge device to be scanned 21 * @sub_bus: Bus number of the 'other side' of the bridge 22 */ 23 void dm_pciauto_prescan_setup_bridge(struct udevice *dev, int sub_bus); 24 25 /** 26 * dm_pciauto_postscan_setup_bridge() - Finish set up of a bridge after scanning 27 * 28 * This should be called after a bus scan is complete. It adjusts the memory 29 * ranges to fit with the devices actually found on the other side (downstream) 30 * of the bridge. 31 * 32 * @dev: Bridge device that was scanned 33 * @sub_bus: Bus number of the 'other side' of the bridge 34 */ 35 void dm_pciauto_postscan_setup_bridge(struct udevice *dev, int sub_bus); 36 37 /** 38 * dm_pciauto_config_device() - Configure a PCI device ready for use 39 * 40 * If the device is a bridge, downstream devices will be probed. 41 * 42 * @dev: Device to configure 43 * @return the maximum PCI bus number found by this device. If there are no 44 * bridges, this just returns the device's bus number. If the device is a 45 * bridge then it will return a larger number, depending on the devices on 46 * that bridge. On error, returns a -ve error number. 47 */ 48 int dm_pciauto_config_device(struct udevice *dev); 49 50 #endif 51