BSP Developer's Guide

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VxWorks 5.5 BSP Developer’s Guide } pMblk->mBlkHdr.mData, pMblk->mBlkHdr.mLen); Step 6: Take special care to ensure that all failure conditions be properly logged. The RFC 2233 interface provides the routine m2IfCounterUpdate( ) to maintain the various counters relevant for failure conditions. All failure conditions are considered errors. However, there are two general classes of failure conditions. The device can return an error status either because of failure to accomplish a requested action, or because of the driver’s inability to handle a packet due to a lack of available resources. Device failure conditions can be further categorized into errors-only and errors-with-discards, based on whether the failure causes packets to be dropped or not. If no packet is dropped, the failure is only an error; if data is dropped, the failure is both an error and a discard. Most device errors are both. If the driver receives a packet that was corrupted at receipt, this constitutes an error only. However, if a driver is unable to handle a perfectly good packet due to a lack of resources, this is always both an error and a discard. The RFC 2233 interface maintains counters for both incoming and outgoing errors and discards. The API provides selection by providing corresponding flags that designate each particular counter. This flag is passed as the second argument to m2IfCounterUpdate( ). The relevant flags are: M2_ctrId_ifInDiscards M2_ctrId_ifInErrors M2_ctrId_ifOutDiscards M2_ctrId_ifOutErrors For example: /* New RFC 2233 mib2 interface */ if (pDrvCtrl->endObj.pMib2Tbl != NULL) { pDrvCtrl->endObj.pMib2Tbl->m2CtrUpdateRtn(pDrvCtrl->endObj.pMib2Tbl, M2_ctrId_ifInErrors, 1); pDrvCtrl->endObj.pMib2Tbl->m2CtrUpdateRtn(pDrvCtrl->endObj.pMib2Tbl, M2_ctrId_ifInDiscards, 1); } 316
I Writing a SCSI-2 Device Driver I.1 Introduction The VxWorks SCSI-2 subsystem consists of the following components: ■ ■ SCSI libraries, an architecture-independent component SCSI controller driver, an architecture-specific component ■ SCSI-2 subsystem initialization code, a board-specific component You must first understand the basic functionality of each of these components before you can extend the functionality of the SCSI libraries or add new SCSI controller drivers. To help you gain that understanding, this chapter describes the general layout of the various SCSI modules, discusses the internals of the SCSI libraries (and their programming interface with the SCSI controller drivers), and describes the process of developing a controller-specific SCSI driver. For information on the interface between the I/O system and the SCSI libraries, including configuring SCSI peripheral devices within VxWorks, see the VxWorks Programmer’s Guide: I/O System. NOTE: In this chapter, the term SCSI refers to SCSI-2 in all cases. The SCSI library interfaces and SCSI controller drivers described in this chapter refer to SCSI-2 only. VxWorks offers only limited support for SCSI-1. Eventually, VxWorks will eliminate all SCSI-1 support. 317
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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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2 BSP Organization further board in
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2 BSP Organization can have very un
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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 ... #endif } T
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3 Creating a New BSP int dummy; ...
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3 Creating a New BSP To find the so
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3 Creating a New BSP ■ It has a V
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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 to the start
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4 Hardware Guidelines Higher-level
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4 Hardware Guidelines Such dedicate
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4 Hardware Guidelines Especially us
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4 Hardware Guidelines selected from
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4 Hardware Guidelines Hardware Inte
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4 Hardware Guidelines 4.4.2 System
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4 Hardware Guidelines only deal wit
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4 Hardware Guidelines 4.4.13 Parall
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4 Hardware Guidelines 0x10000, /* 6
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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 To fix this sit
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5 Driver Guidelines block are more
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5 Driver Guidelines 5.8 Driver Use
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5 Driver Guidelines ■ ■ Memory
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5 Driver Guidelines The level of ca
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5 Driver Guidelines cache for the d
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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 NOTE: INIT_BEFORE only
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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 ■ ■ The te
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7 Validation Testing 2. The script
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7 Validation Testing Figure 7-4 Typ
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7 Validation Testing NOTE: Wind Riv
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7 Validation Testing scsi Requires
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7 Validation Testing Table 7-1 Vali
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7 Validation Testing Table 7-2 Vali
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7 Validation Testing sysProcNumGet
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7 Validation Testing The log file c
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8 Writing Portable C Code This chap
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8 Writing Portable C Code attribute
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8 Writing Portable C Code 8.1.3 Sta
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8 Writing Portable C Code 8.1.5 Oth
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8 Writing Portable C Code The last
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8 Writing Portable C Code 8.2 Tool
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9 Documentation Guidelines 9.1 Intr
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9 Documentation Guidelines Table 9-
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9 Documentation Guidelines Table 9-
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9 Documentation Guidelines ■ Avoi
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9 Documentation Guidelines ■ ■
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9 Documentation Guidelines INCLUDE
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9 Documentation Guidelines INTRODUC
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9 Documentation Guidelines 9.5 Gene
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9 Documentation Guidelines uppercas
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9 Documentation Guidelines The foll
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10 Product Packaging 10.1 SETUP Dev
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10 Product Packaging ... include $(
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10 Product Packaging Vendor-Supplie
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10 Product Packaging in the project
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A Upgrading a BSP for Tornado 2.0 T
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A Upgrading a BSP for Tornado 2.0 A
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A Upgrading a BSP for Tornado 2.0
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A Upgrading a BSP for Tornado 2.0 6
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B Upgrading a BSP for Tornado 2.2 T
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B Upgrading a BSP for Tornado 2.2 C
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B Upgrading a BSP for Tornado 2.2
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B Upgrading a BSP for Tornado 2.2 c
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B Upgrading a BSP for Tornado 2.2
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C Upgrading a BSP for the VxWorks N
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D VxWorks Boot Sequence Table D-1 d
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D VxWorks Boot Sequence Table D-1 V
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E Component Language E.1 Component
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E Component Language REQUIRES r1 r2
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E Component Language } // default i
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E Component Language FOLDER_WINDVIE
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E Component Language initialization
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E Component Language INCLUDE_MMU_BA
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E Component Language INCLUDE_NETWOR
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E Component Language INCLUDE_WDB_ME
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F Generic Drivers F.1 Introduction
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F Generic Drivers CONSOLE_TTY This
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F Generic Drivers Define SIO_CALLBA
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F Generic Drivers NV_RAM_SIZE Defin
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F Generic Drivers F.10 PCI Bus The
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G Upgrading 4.3 BSD Network Drivers
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J BSP Validation Test Suite Referen
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K BSP Validation Checklists This ap
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K BSP Validation Checklists BSP Val
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K BSP Validation Checklists 7. Veri
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K BSP Validation Checklists 2. If t
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K BSP Validation Checklists Validat
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K BSP Validation Checklists Manufac
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K BSP Validation Checklists Manufac
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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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M BSP Product Contents Do not inclu
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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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