VxWorks
DEVICE DRIVER DEVELOPER'S GUIDE
Volume 2: Writing Class-Specific Device Drivers
6.8
®
VxWorks Device Driver Developer's Guide, 6.8
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VxWorks
Device Driver Developer's Guide
6.8
29 Oct 09
iii
Contents
1 Class-Specific Driver Development .......................................................... 1
1.1 About VxBus Driver Classes ........................................................................................ 1
1.2 Before You Begin ............................................................................................................. 1
1.3 About this Document .................................................................................................... 2
Navigating this Documentation Set ............................................................... 2
2 Bus Controller Drivers ................................................................................ 3
2.1 Introduction ..................................................................................................................... 3
2.2 Overview .......................................................................................................................... 3
2.3 VxBus Driver Methods .................................................................................................. 5
2.3.1 {busCtlrDevCfgRead}( ) ................................................................................... 5
2.3.2 {busCtlrCfgRead}( ) ........................................................................................... 6
2.3.3 {busCtlrDevCfgWrite}( ) ................................................................................... 7
2.3.4 {busCtlrCfgWrite}( ) .......................................................................................... 7
2.3.5 {busCtlrDevCtlr}( ) ............................................................................................ 8
2.3.6 {busCtlrAccessOverride}( ) .............................................................................. 9
Override for (*busCfgRead)( ) ......................................................................... 10
Override for (*busCfgWrite)( ) ........................................................................ 10
Override for (*vxbDevControl)( ) ................................................................... 10
2.3.7 {busCtlrCfgInfo}( ) ............................................................................................. 11
2.3.8 {busCtlrBaseAddrCvt}( ) .................................................................................. 11
2.3.9 {vxbDevRegMap}( ) ........................................................................................... 12
Specifying a Predefined Transaction Type ..................................................... 13
Providing a New Transaction Type ............................................................... 15
2.3.10 {vxbIntDynaVecProgram}( ) ............................................................................. 16
2.4 Header Files ..................................................................................................................... 16
VxWorks
Device Driver Developer's Guide, 6.8
iv
2.5 BSP Configuration .......................................................................................................... 17
2.5.1 PCI Configuration ............................................................................................ 17
2.5.2 PCI Autoconfiguration .................................................................................... 18
2.6 Available Utility Routines ............................................................................................ 19
2.6.1 PCI Configuration ............................................................................................ 19
2.6.2 PCI Autoconfiguration ..................................................................................... 19
2.6.3 vxbBusAnnounce( ) ........................................................................................... 20
2.6.4 vxbPciBusTypeInit( ) ......................................................................................... 20
2.7 Initialization .................................................................................................................... 21
2.7.1 Initialization Example ..................................................................................... 22
vxbBusAnnounce( ) ........................................................................................... 23
vxbDeviceAnnounce( ) ..................................................................................... 23
vxbDevStructAlloc( ) ........................................................................................ 23
vxbDevStructFree( ) .......................................................................................... 24
2.8 Debugging ........................................................................................................................ 24
3 Direct Memory Access Drivers .................................................................. 25
3.1 Introduction ..................................................................................................................... 25
3.2 Overview ........................................................................................................................... 25
3.3 VxBus Driver Methods ................................................................................................... 26
3.3.1 {vxbDmaResourceGet}( ) .................................................................................. 26
3.3.2 {vxbDmaResourceRelease}( ) ........................................................................... 27
3.3.3 {vxbDmaResDedicatedGet}( ) .......................................................................... 27
3.4 Header Files ...................................................................................................................... 27
3.5 BSP Configuration .......................................................................................................... 28
3.6 Available Utility Routines ............................................................................................. 28
3.7 Initialization ..................................................................................................................... 28
3.8 DMA System Structures and Routines ....................................................................... 28
3.8.1 (*dmaRead)( ) ..................................................................................................... 29
3.8.2 (*dmaReadAndWait)( ) ..................................................................................... 29
3.8.3 (*dmaWrite)( ) .................................................................................................... 29
3.8.4 (*dmaWriteAndWait)( ) .................................................................................... 29
3.8.5 (*dmaCancel)( ) .................................................................................................. 30
3.8.6 (*dmaPause)( ) ................................................................................................... 30
3.8.7 (*dmaResume)( ) ................................................................................................ 30
Contents
v
3.8.8 (*dmaStatus)( ) ................................................................................................... 30
3.9 Debugging ....................................................................................................................... 31
4 Interrupt Controller Drivers ........................................................................ 33
4.1 Introduction ..................................................................................................................... 33
4.2 Overview .......................................................................................................................... 34
Interrupt Identification .................................................................................... 34
Interrupt Controller Driver Responsibilities ................................................. 34
Interrupt Controller Configurations ............................................................... 35
Dynamic Vectors ................................................................................................ 35
Interrupt Controller Drivers and Multiprocessing ....................................... 36
4.3 VxBus Driver Methods .................................................................................................. 36
4.3.1 Basic Methods .................................................................................................... 36
{vxbIntCtlrConnect}( ) ...................................................................................... 36
{vxbIntCtlrDisconnect}( ) ................................................................................. 36
{vxbIntCtlrEnable}( ) ......................................................................................... 37
{vxbIntCtlrDisable}( ) ........................................................................................ 37
4.3.2 Dynamic Vector Methods ................................................................................ 37
{vxbIntDynaVecConnect}( ) ............................................................................. 37
4.3.3 Multiprocessor Methods ................................................................................. 38
{vxbIntCtlrIntReroute}( ) .................................................................................. 38
{vxbIntCtlrCpuReroute}( ) .............................................................................. 38
{vxIpiControlGet}( ) .......................................................................................... 39
4.4 Header Files ...................................................................................................................... 39
vxbIntrCtlr.h ....................................................................................................... 39
vxbIntCtlrLib.h .................................................................................................. 39
4.5 BSP Configuration .......................................................................................................... 40
4.5.1 Interrupt Input Table ........................................................................................ 40
4.5.2 Dynamic Vector Table ....................................................................................... 42
4.5.3 CPU Routing Table ............................................................................................ 42
4.5.4 Interrupt Priority ............................................................................................... 43
4.5.5 Crossbar Routing Table .................................................................................... 43
4.6 Available Utility Routines ............................................................................................. 44
4.6.1 intCtlrHwConfGet( ) ......................................................................................... 45
4.6.2 intCtlrISRAdd( ) ................................................................................................ 45
4.6.3 intCtlrISRDisable( ) ........................................................................................... 45
4.6.4 intCtlrISREnable( ) ............................................................................................ 45
4.6.5 intCtlrISRRemove( ) .......................................................................................... 45
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