Plug-and-Play-HOWTO

David S. Lawyer mailto:[email protected]

1. Introduction

• 1.1 1. Copyright, Trademarks, Disclaimer, & Credits
• 1.2 Future Plans; You Can Help
• 1.3 New Versions of this HOWTO
• 1.4 New in Recent Versions
• 1.5 General Introduction. Do you need this HOWTO?

2. What PnP Should Do: Allocate "Bus-Resources"

• 2.1 What is Plug-and-Play (PnP)?
• 2.2 Hardware Devices and Communication with them
• 2.3 Addresses
• 2.4 I/O Addresses (principles relevant to other resources too)
• 2.5 Memory Ranges
• 2.6 IRQs --Overview
• 2.7 DMA (Direct Memory Access) or Bus Mastering
• 2.8 DMA Channels (not for PCI bus)
• 2.9 "Resources" for both Device and Driver
• 2.10 Resources are Limited
• 2.11 Second Introduction to PnP
• 2.12 How Pnp Works (simplified)
• 2.13 Starting Up the PC
• 2.14 Buses
• 2.15 How Linux Does PnP
• 2.16 Problems with Linux PnP

3. Setting up a PnP BIOS

• 3.1 Do you have a PnP operating system?
• 3.2 Assigning Resources by the BIOS
• 3.3 Reset the configuration?

4. How to Deal with PnP Cards

• 4.1 Introduction to Dealing with PnP Devices
• 4.2 Device Driver Configures, Reserving Resources
• 4.3 /sys User Interface Configures
• 4.4 BIOS Configures
• 4.5 ISA cards only: Disable PnP ?
• 4.6 ISA Bus: Isapnp (part of isapnptools)
• 4.7 PCI Utilities
• 4.8 Windows Configures
• 4.9 PnP Software/Documents

5. Tell the Driver the Configuration ??

• 5.1 Introduction
• 5.2 Serial Port Driver Example

6. How Do I Find Devices and How Are They Configured?

• 6.1 Finding and How-Configured Are Related
• 6.2 Devices May Have Two "Configurations"
• 6.3 Finding Hardware
• 6.4 Boot-time Messages
• 6.5 The /proc Tree
• 6.6 The /sys Tree
• 6.7 PCI Bus Inspection
• 6.8 ISA Bus Introduction
• 6.9 ISA PnP cards
• 6.10 LPC Bus
• 6.11 X-bus
• 6.12 Non-PnP Cards
• 6.13 Non-PnP Cards with jumpers
• 6.14 Neither PnP nor jumpers
• 6.15 Tools for Detecting and/or Configuring all Hardware
• 6.16 Tools for Detecting and Configuring One Type of Hardware
• 6.17 Use MS Windows

7. PCI Interrupts

• 7.1 Introduction
• 7.2 History: From ISA to PCI Interrupts
• 7.3 Advanced Programmable Interrupt Controller (APIC)
• 7.4 Message Signalled Interrupts (MSI)
• 7.5 Sharing PCI Interrupts
• 7.6 Looking at Routing Tables
• 7.7 For More Information
• 7.8 PCI Interrupt Linking

8. PnP for External and Plug-in Devices

• 8.1 USB Bus
• 8.2 Hot Plug
• 8.3 Hot Swap
• 8.4 PnP Finds Devices Plugged Into Serial Ports

9. Error Messages

• 9.1 Unexpected Interrupt
• 9.2 Plug and Play Configuration Error (Dell BIOS)
• 9.3 isapnp: Write Data Register 0xa79 already used (from logs)
• 9.4 Can't allocate region (PCI)

10. Interrupt Sharing and Interrupt Conflicts

• 10.1 Introduction
• 10.2 Real Interrupt Conflict
• 10.3 No Interrupt Available

11. Appendix

• 11.1 Universal Plug and Play (UPnP)
• 11.2 Address Details
• 11.3 ISA Bus Configuration Addresses (Read-Port etc.)
• 11.4 Interrupts --Details
• 11.5 How the Device Driver Catches its Interrupt
• 11.6 ISA Isolation
• 11.7 Bus Mastering and DMA resources
• 11.8 Historical and Obsolete