| /** @file | |
| Work with PCI capabilities in PCI config space -- internal type definitions. | |
| Copyright (C) 2018, Red Hat, Inc. | |
| SPDX-License-Identifier: BSD-2-Clause-Patent | |
| **/ | |
| #ifndef __BASE_PCI_CAP_LIB_H__ | |
| #define __BASE_PCI_CAP_LIB_H__ | |
| #include <Library/OrderedCollectionLib.h> | |
| #include <Library/PciCapLib.h> | |
| // | |
| // Structure that uniquely identifies a capability instance and serves as key | |
| // for insertion and lookup. | |
| // | |
| typedef struct { | |
| PCI_CAP_DOMAIN Domain; | |
| UINT16 CapId; | |
| UINT16 Instance; | |
| } PCI_CAP_KEY; | |
| // | |
| // In Instance==0 PCI_CAP objects, store NumInstances directly. In Instance>0 | |
| // PCI_CAP objects, link Instance#0 of the same (Domain, CapId). This way | |
| // NumInstances needs maintenance in one object only, per (Domain, CapId) pair. | |
| // | |
| typedef union { | |
| UINT16 NumInstances; | |
| PCI_CAP *InstanceZero; | |
| } PCI_CAP_NUM_INSTANCES; | |
| // | |
| // Complete the incomplete PCI_CAP structure here. | |
| // | |
| struct PCI_CAP { | |
| PCI_CAP_KEY Key; | |
| PCI_CAP_NUM_INSTANCES NumInstancesUnion; | |
| UINT16 Offset; | |
| UINT16 MaxSizeHint; | |
| UINT8 Version; | |
| }; | |
| // | |
| // Complete the incomplete PCI_CAP_LIST structure here. | |
| // | |
| struct PCI_CAP_LIST { | |
| ORDERED_COLLECTION *Capabilities; | |
| }; | |
| #endif // __BASE_PCI_CAP_LIB_H__ |