BSP Developer's Guide

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VxWorks 5.5 <strong>BSP</strong> Developer’s <strong>Guide</strong> Figure H-2 The MUX Interface muxBind( ) stackShutdownRtn( ) muxUnbind( ) muxDevLoad( ) muxDevUnload( ) endLoad( ) endUnload( ) stackRcvRtn( ) stackError( ) muxReceive( ) muxError( ) muxSend( ) endSend( ) stackTxRestartRtn( ) muxTxRestartRtn( ) endTxRestartRtn( ) muxMCastAddrDel( ) muxMCastAddrGet( ) endMCastAddrDel( ) endMCastAddrGet( ) muxPollSend( ) muxMCastAddrAdd( ) endPollSend( ) endMCastAddrAdd( ) muxPollReceive( ) endPollReceive( ) muxIoctl( ) endIoctl( ) endStart( ) endStop( ) Protocol MUX END The arrows indicate calls to an entry point. For example, the top-most arrow tells you that the protocol calls muxBind( ), a routine implemented in the MUX. If the MUX-based API specifies both ends of the call, the figure specifies a routine name at each end of an arrow. For example, muxSend( ) calls endSend( ). Note that, although the protocol started the send by calling muxSend( ), the figure does not name the protocol routine that called muxSend( ). That routine is outside the standardized API. H.2 How VxWorks Launches and Uses Your Driver The primary focus of this chapter is on the MUX utilities and the standard END entry points. However, when designing or debugging your driver’s entry points, 270
H Implementing a MUX-Based Network Interface Driver you need to know the context in which the entry point executes. Thus, you need to know the following: ■ ■ ■ The task that makes the calls that actually load and start your driver. The task that typically registers the interrupt handler for your driver. The task that uses your driver to do most of the processing on a packet. H.2.1 Launching Your Driver At system startup, VxWorks spawns the task tUsrRoot to handle the following: ■ ■ ■ ■ Initializing the network task’s job queue. Spawning tNetTask to process items on the network task’s job queue. Calling muxDevLoad( ) to load your network driver. Calling muxDevStart( ) to start your driver. Loading Your Driver into the MUX To load your network driver, tUsrRoot calls muxDevLoad( ). As input to the call, tUsrRoot specifies your driver’s endLoad( ) entry point. Internally, the muxDevLoad( ) call executes the specified endLoad( ) entry point. This endLoad( ) entry point is analogous to the xxattach( ) entry point, the only public entry point into the 4.3 BSD style drivers. The endLoad( ) routine handles any device-specific initialization and returns an END_OBJ structure. Your endLoad( ) must populate most of this structure (see, Providing Network Device Abstraction: END_OBJ, p.283). This includes providing a pointer to a NET_FUNCS structure populated with function pointers to your driver’s entry points for handling sends, receives, and so on. After control returns from endLoad( ) to muxDevLoad( ), the MUX completes the END_OBJ structure (by giving it a pointer to a function your driver can use to pass packets up to the MUX). The MUX then adds the returned END_OBJ to a linked list of END_OBJ structures. This list maintains the state of all the currently active network devices on the system. After control returns from muxDevLoad( ), your driver is loaded and ready to use. H Registering Your Driver’s Interrupt Routine To register your driver’s interrupt handler, you must call sysIntConnect( ). The most typical place to make this call is in your driver’s endStart( ) entry point. 271
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VxWorks® 5.5 BSP DEVELOPER’S GUI
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1 Overview ........................
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Contents 1 Overview ...............
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Contents 3.6.5 Cache, MMU, and DMA
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Contents Memory-Mapped Chips ......
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Contents 7.3.3 System Configuration
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Contents F Generic Drivers ........
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Contents Stopping the Driver Withou
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1 Overview 1.1 Introduction One str
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1 Overview ■ New Drivers Many new
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1 Overview Included with Tornado (n
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1 Overview ■ ■ ■ ■ ■ ■
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1 Overview Table 1-1 Font Usage for
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2 BSP Organization 2.1 Introduction
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2 BSP Organization Files in the tar
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2 BSP Organization Files in the tar
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2 BSP Organization Version 1.0 BSPs
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2 BSP Organization SM_MEM_SIZE The
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2 BSP Organization For boards witho
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2 BSP Organization PCI_MSTR_IO_LOCA
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2 BSP Organization The entry point
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2 BSP Organization target.nr The fi
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2 BSP Organization bootrom This fil
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2 BSP Organization sysSerialHwInit(
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2 BSP Organization The Motorola M68
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2 BSP Organization Many VxWorks fac
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3 Creating a New BSP 3.1 Introducti
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3 Creating a New BSP 3.2 Setting Up
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3 Creating a New BSP Makefile At a
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3 Creating a New BSP char * sysBspR
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3 Creating a New BSP 3.6.7 SCSI VxW
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4 Hardware Guidelines 4.1 Introduct
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4 Hardware Guidelines The following
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5 Driver Guidelines 5.1 Introductio
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5 Driver Guidelines Maintenance and
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5 Driver Guidelines word addresses.
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5 Driver Guidelines 5.4 Design Guid
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5 Driver Guidelines Per-Device Data
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5 Driver Guidelines 5.8 Driver Use
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6 Components 6.1 Introduction Torna
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6 Components 6.2 Component Descript
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6 Components ■ User Presentation.
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6 Components Folder FOLDER_ANSI { N
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6 Components in a single project. I
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6 Components The component object i
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6 Components Parameters Parameters
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6 Components In the example, the co
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6 Components (2) comps/vxWorks/arch
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6 Components Figure 6-4 Include Com
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6 Components The _CHILDREN property
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6 Components ! CAUTION: Do not alte
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6 Components ■ Check the Project
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7 Validation Testing 7.1 Introducti
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7 Validation Testing scsi Requires
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8 Writing Portable C Code This chap
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9 Documentation Guidelines 9.1 Intr
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9 Documentation Guidelines INCLUDE
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10 Product Packaging 10.1 SETUP Dev
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A Upgrading a BSP for Tornado 2.0 T
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B Upgrading a BSP for Tornado 2.2 c
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Page 241 and 242: D VxWorks Boot Sequence Table D-1 d
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Page 265 and 266: F Generic Drivers F.1 Introduction
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J BSP Validation Test Suite Referen
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K BSP Validation Checklists 7. Veri
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L Refgen NOTE: In Tornado 1.0.1 and
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L Refgen * SYNOPSIS * \cs * void xx
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L Refgen Yields output approximatel
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L Refgen EXAMPLE INCLUDES SEE ALSO
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M BSP Product Contents When you are
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Index A abort button 82 addressing
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Index clocks see also individual cl
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Index naming conventions 95 perform
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Index INCLUDE_USR_APPL 38 INCLUDE_V
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Index network drivers 58 network in
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Index scsiCtrlLib 324 scsiDirectLib
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Index testing, validation 139-158 s
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