Subrata Banik | 20fe24b | 2021-12-09 02:46:38 +0530 | [diff] [blame] | 1 | /** @file |
| 2 | Provides services to return segment information on a platform with multiple PCI segments. |
| 3 | |
| 4 | This library is consumed by PciSegmentLib to support multiple segment PCI configuration access. |
| 5 | |
| 6 | Copyright (c) 2017 - 2020, Intel Corporation. All rights reserved.<BR> |
| 7 | SPDX-License-Identifier: BSD-2-Clause-Patent |
| 8 | |
| 9 | **/ |
| 10 | |
| 11 | #ifndef __PCI_SEGMENT_INFO_LIB__ |
| 12 | #define __PCI_SEGMENT_INFO_LIB__ |
| 13 | |
| 14 | typedef struct { |
| 15 | UINT16 SegmentNumber; ///< Segment number. |
| 16 | UINT64 BaseAddress; ///< ECAM Base address. |
| 17 | UINT8 StartBusNumber; ///< Start BUS number, for verifying the PCI Segment address. |
| 18 | UINT8 EndBusNumber; ///< End BUS number, for verifying the PCI Segment address. |
| 19 | } PCI_SEGMENT_INFO; |
| 20 | |
| 21 | /** |
| 22 | Return an array of PCI_SEGMENT_INFO holding the segment information. |
| 23 | |
| 24 | Note: The returned array/buffer is owned by callee. |
| 25 | |
| 26 | @param Count Return the count of segments. |
| 27 | |
| 28 | @retval A callee owned array holding the segment information. |
| 29 | **/ |
| 30 | PCI_SEGMENT_INFO * |
| 31 | EFIAPI |
| 32 | GetPciSegmentInfo ( |
| 33 | UINTN *Count |
| 34 | ); |
| 35 | |
| 36 | #endif |