EDK II UEFI Driver Writer's Guide
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EDK II UEFI Driver Writer's Guide
Introduction
Tables
Figures
Examples
Acknowledgements
1 Introduction
2 UEFI Driver Implementation Checklist
3 Foundation
4 General Driver Design Guidelines
5 UEFI Services
6 UEFI Driver Categories
7 Driver Entry Point
8 Private Context Data Structures
9 Driver Binding Protocol
10 UEFI Service Binding Protocol
11 UEFI Driver and Controller Names
12 UEFI Driver Configuration
13 UEFI Driver Diagnostics
14 Driver Health Protocol
15 Driver Family Override Protocol
16 Driver Supported EFI Version Protocol
17 Bus-Specific Driver Override Protocol
18 PCI Driver Design Guidelines
18.1 PCI Root Bridge I/O Protocol Drivers
18.2 PCI Bus Drivers
18.3 PCI drivers
18.3.1 Supported()
18.3.2 Start() and Stop()
18.3.3 PCI Cards with Multiple PCI Controllers
18.4 Accessing PCI resources
18.5 PCI DMA
18.6 PCI Optimization Techniques
18.7 PCI Option ROM Images
19 USB Driver Design Guidelines
20 SCSI Driver Design Guidelines
21 ATA Driver Design Guidelines
22 Text Console Driver Design Guidelines
23 Graphics Driver Design Guidelines
24 Mass Storage Driver Design Guidelines
25 Network Driver Design Guidelines
26 User Credential Driver Design Guidelines
27 Load File Driver Design Guidelines
28 IPF Platform Porting Considerations
29 EFI Byte Code Porting Considerations
30 Building UEFI Drivers
31 Testing and Debugging UEFI Drivers
32 Distributing UEFI Drivers
Appendix A EDK II File Templates
Appendix B EDK II Sample Drivers
Appendix C Glossary
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18.3 PCI drivers
PCI drivers use the services of the EFI_PCI_IO_PROTOCOL to produce one or more protocols providing I/O abstractions for a PCI controller. PCI drivers follow the UEFI driver model, so they may be any of the following:
  • Device drivers
  • Bus drivers
  • Hybrid drivers
PCI drivers for graphics controllers are typically device drivers that consume the EFI_PCI_IO_PROTOCOL and produce the EFI_GRAPHICS_OUTPUT_PROTOCOL. The PCI drivers for USB host controllers are typically device drivers that consume the EFI_PCI_IO_PROTOCOL and produce the EFI_USB_HOST_CONTROLLER_PROTOCOL.
The PCI drivers for disk controllers are typically bus drivers or hybrid drivers that consume the EFI_PCI_IO_PROTOCOL and EFI_DEVICE_PATH_PROTOCOL and produce child handles with the EFI_DEVICE_PATH_PROTOCOL and EFI_BLOCK_IO_PROTOCOL.
PCI drivers for disk controllers using the SCSI command set typically produce the EFI_EXT_SCSI_PASS_THRU_PROTOCOL for each SCSI channel the disk controller produces.
Chapter 20 covers details on SCSI drivers.
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18.2.1 Hot-plug PCI buses
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18.3.1 Supported()
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