| Felix Held | ea83139 | 2023-08-08 02:55:09 +0200 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #include <amdblocks/data_fabric.h> |
| 4 | #include <device/device.h> |
| 5 | #include <types.h> |
| 6 | |
| 7 | enum cb_err data_fabric_get_pci_bus_numbers(struct device *domain, uint8_t *first_bus, |
| 8 | uint8_t *last_bus) |
| 9 | { |
| 10 | union df_pci_cfg_map pci_bus_map; |
| 11 | |
| 12 | for (unsigned int i = 0; i < DF_PCI_CFG_MAP_COUNT; i++) { |
| 13 | pci_bus_map.raw = data_fabric_broadcast_read32(DF_PCI_CFG_MAP(i)); |
| 14 | |
| 15 | /* TODO: Systems with more than one PCI root need to check to which PCI root |
| 16 | the PCI bus number range gets decoded to. */ |
| 17 | if (pci_bus_map.we && pci_bus_map.re) { |
| 18 | *first_bus = pci_bus_map.bus_num_base; |
| 19 | *last_bus = pci_bus_map.bus_num_limit; |
| 20 | return CB_SUCCESS; |
| 21 | } |
| 22 | } |
| 23 | |
| 24 | return CB_ERR; |
| 25 | } |