PCI Master Command Codes, PCI Command | Motorola MVME2300 Series

2

Raven PCI Bridge ASIC

The PCI master can support Critical Word First (CWF) burst transfers. The PCI master will divide this transaction into two parts. The first part will start on the address presented with the CWF transfer request and continue up to the end of the current cache line. The second transfer will start at the beginning of the associated cache line and work its way up to (but not including) the word addressed by the CWF request.

It should be noted that even though the master can support burst transactions, a majority of the transaction types handled are single-beat transfers. Since PCI space is typically not configured as cacheable, burst transactions to PCI space would not naturally occur. Burst transactions must be supported, however, since it is conceivable that bursting could happen. For example, nothing prevents the processor from loading up a cache line with PCI write data and manually flushing the cache line.

The following paragraphs identify some associations between the operation of the PCI master and the requirements of the PCI 2.0 Local Bus Specification.

Command Types

The PCI command codes generated by the PCI master depend on the type of transaction being performed on the MPC bus. Please refer to the MPC Slave section earlier in this chapter for a further description of MPC bus read and MPC bus write transactions. Table 2-5summarizes the command types supported and shows how they are generated.

Table 2-5. PCI Master Command Codes

	Entity Addressed	MPC	TBST∗	MEM	C/BE	PCI Command
	Entity Addressed	Transfer Type	TBST∗	MEM	C/BE	PCI Command
		Transfer Type

	PIACK	Read	x	x	0000	Interrupt Acknowledge

	CONADD/CONDAT	Write	x	x	0001	Special Cycle

	MPC Mapped PCI Space	Read	x	0	0010	I/O Read

		Write	x	0	0011	I/O Write

	-- Unsupported --				0100	Reserved

	-- Unsupported --				0101	Reserved

	MPC Mapped PCI Space	Read	1	1	0110	Memory Read

		Write	x	1	0111	Memory Write

2-18	Computer Group Literature Center Web Site

Image 88

Motorola MVME2300 Series manual PCI Master Command Codes, Entity Addressed, PCI Command, Transfer Type

Contents

Programmer’s Reference Guide MVME2300 Series VME Processor ModulePage Safety Summary Flammability Instructions CE Notice European Community Limited and Restricted Rights Legend Contents Raven PCI Bridge Asic Page Page Falcon ECC Memory Controller Chip Set Universe VMEbus to PCI Chip Chapter Page List of Figures Page List of Tables Xviii Model Memory Processor 16MB ECC Dram32MB ECC Dram 64MB ECC Dram Summary of Changes Date Description of Change Overview of Contents Comments and Suggestions Conventions Used in This Manual BoldEnter, Return or CR Ctrl Xxiii Xxiv Introduction Overview Summary of Features Features MVME2300 SeriesFeature MVME2300 ECC Dram System Block Diagram Scsa I/O Board Description and Memory Maps MVME2300 Series System Block Diagram VMEbus Interface Functional DescriptionFront Panel Programming Model PCI interfaceProcessor Memory Maps P2 I/O Default Processor Memory Map Processor Address Size Definition Start End Processor Chrp Memory Map Chrp Memory Map Example Raven MPC Register Values for Chrp Memory Map Address Register Name Register Value Prep Memory Map Example Processor Prep Memory MapBfff Ffff PCI Configuration Access Raven MPC Register Values for Prep Memory Map Default PCI Memory Map PCI Memory MapsPCI Chrp Memory Map PCI Address Size Definition Start End FC03 Ffff Raven PCI Register Values for Chrp Memory Map Configuration Register Value Address Offset Register NameUniverse PCI Register Values for Chrp Memory Map PCI Prep Memory Map 10. PCI Prep Memory Map 38FF Ffff 39FE Ffff39FF Ffff 3AFE Ffff 11. Raven PCI Register Values for Prep Memory Map 12. Universe PCI Register Values for Prep Memory Map VMEbus Mapping VMEbus Master Map VMEbus Slave Map VMEbus Slave Mapping VSI0CTL VSI0BSVSI0BD VSI0TO VMEbus Address Size Chrp Map Prep Map Range Mode Falcon-Controlled System Registers14. VMEbus Slave Map Example 15. System Register Summary System Configuration Register Syscr System Configuration Register $FEF80400$FD Sysclk Value System Clock Speed PCI Clock Speed P0/1STAT Value Processor 0/1 Present External In-line Cache Memory Configuration Register Memcr Memory Configuration Register $FEF80404MSIZE01 MSIZE01 Total Memory On Board RA/BTYP02 MSPD01L2TYPE03 L2PLL03 FLSHP02System External Cache Control Register Sxccr PLL Value Size Processor 0 External Cache Control Register P0XCCR Processor 1 External Cache Control Register P1XCCRCPU Control Register CPU Control Register $FEF88300 Access Registers ISA Local Resource BusW83C553 PIB Registers Uart NVRAM/RTC and Watchdog Timer Registers General-Purpose Readable Jumpers Module Configuration and Status Registers 17. M48T59/559 Access Registers18. Module Configuration and Status Registers PCI I/O Address Function CPU Configuration Register Old CPU Configuration Register $FE000800Cputype SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0 Base Module Feature Register Offset $0802 Base Module Feature RegisterPcixp PMC2P PMC1P Vmep Lanp Base Module Status Register Bmsr BasetypeBase Module Status Register Offset $0803 Basetype VME Registers Seven-Segment Display RegisterSegment Display Register Offset $08C0 SD9 SD8 SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0 19. VME Registers LM/SIG Control RegisterSETSIG1 SETSIG0 LM/SIG Status Register Board Description and Memory Maps Location Monitor Upper Base Address Register Location Monitor Lower Base Address RegisterLocation Monitor Upper Base Address Register Offset $1002 Location Monitor Lower Base Address Register Offset $1003 Semaphore Register Semaphore Register 1 Offset $1004SEM1 Semaphore Register 2 Offset $1005 Emulated Z8536 CIO Registers and Port Pins 20. Emulated Z8536 Access RegistersVME Geographical Address Register Vgar Emulated Z8536 Registers Port Signal Direction Descriptions Pin Name Z8536 CIO Port Pins21. Z8536 CIO Port Pin Assignments PC2 BASETYP0 ISA DMA ChannelsPC3 BASETYP1 Page Features of the Raven Asic FeaturesFunction Features Block Diagram Raven Block Diagram MPC Bus Interface MPC Address Mapping MPC-to-PCI Address Decoding MPC to PCI Address Translation MPC Slave Command Types MPC Slave Response MPC Transfer Type Transaction Encoding MPC Write Posting MPC Master MPC Transfer Types PCI Command CodeMPC Transfer Type MPC Transfer Size TT0-TT4 MPC Bus Timer MPC Arbiter Configuration Registers PCI Address Mapping MPC Bus Address Space PCI to MPC Address Decoding RavenMPIC Control Registers Decoder Priority PCI Slave Command Types Command Types PCI Slave ResponseCommand Type Slave Response? Addressing Exclusive Access Device SelectionTarget-Initiated Termination Fast Back-to-Back Transactions Parity Cache SupportPCI Write Posting PCI Master PCI Master Command Codes PCI CommandEntity Addressed Transfer Type Combining, Merging, and Collapsing Master Initiated Termination Arbitration Latency ArbitrationAddress/Data Stepping Generating PCI Memory and I/O Cycles Generating PCI CyclesPCI Cycle Type Generating PCI Configuration Cycles PCI Spread I/O Address Translation Functional Description Generating PCI Special Cycles Device Number Address Bit Endian Conversion When MPC Devices are Big-EndianGenerating PCI Interrupt Acknowledge Cycles Big- to Little-Endian Data Swap When MPC Devices are Little-Endian Raven Registers and Endian ModeAddress Modification for Little-Endian Transfers Data Address Length Bytes Modification Error Handling Error Status Error Address Attributes Transaction OrderingSMA Perr Raven Registers MPC Registers Raven MPC Register Map Venid Vendor ID/Device ID RegistersDevid General Control-Status/Feature Registers Revision ID RegisterRevid Revision ID. Identifies the Raven revision level. This Flbrd BhogMarb Mpic Feat MIDxCurrent MPC Data Bus Master Prescaler Adjust Register Operation Reset $00Operation Reset $00 $B4 MPC Arbiter Control Register MPC Error Enable Register Matom Smam RtamMatoi Perri OVF MPC Error Status RegisterMato Writing it to a 0 has no effect. When the Smam bit SMAPCI transaction. The bit may be cleared by writing it to a RTA MPC Error Attribute Register Merat Which originated the transfer in which the error occurredRegister TTx Designates a selected byte Operation Reset $0000 PCI Interrupt Acknowledge RegisterPiack Address $FEFF0030 Bit Name Operation Reset $8000 $8080 StartEND MPC Slave Address 3 Register MPC Slave Offset/Attribute 0,1 and 2 Registers MSOFFxREN WEN IOM WpenMSOFF3 Cycles. When clear, the corresponding MPC slave will PCI Registers Raven PCI Configuration Register Map $0C$18 $7F $8C Operation Reset $4801 $1057 Raven PCI I/O Register Map$CF8 Offset $00 Bit Name PCI Command/ Status Registers Dpar SeltimSigta Rcvta Revision ID/ Class Code Registers ClassBase Register Space RES IobaIO/MEM PRE PCI Slave Address 0,1,2 and 3 Registers To access MPC bus resources. The value of this field willBe compared with the upper 16 bits of the incoming PCI PCI Slave Attribute/ Offset 0,1,2 and 3 Registers INVTransfer type code which specifies the current transaction GBL Perspective from the MPC bus in Big-Endian mode Configaddress RegisterConceptual perspective from the PCI bus Perspective from the MPC bus in Little-Endian mode REGFUN DEV Configdata Register EN EnableBUS Data ‘D’ Data ‘C’ Data ‘B’ Data ‘A’ Operation Reset Data ‘B’ Data ‘C’ Data ‘D’ Operation Reset Raven Interrupt Controller FeaturesArchitecture Interrupt Source Priority Readability of CSRProcessor’s Current Task Priority Nesting of Interrupt Events Spurious Vector GenerationInterprocessor Interrupts IPI Compatibility Raven-Detected Errors Timers Interrupt Delivery Modes Block Diagram Description Raven Interrupt Controller Interrupt Pending Register IPR Program-Visible RegistersInterrupt Selector is Interrupt Request Register IRR In-Service Register ISRInterrupt Router Raven PCI Bridge Asic Mpic Registers RavenMPIC Registers10. RavenMPIC Register Map Off $010F0 $010E0$011E0 $100E0 $100F0 $101E0 $101F0 Ncpu Feature Reporting RegisterVID Global Configuration Register Offset $01020 Bit Name Processor 1. Writing a 1 to P1 will assert the Soft Reset Vendor Identification RegisterSTP Processor Init Register IPI Vector/Priority Registers MaskACT Prior Spurious Vector Register Interrupt Acknowledge register is read during a spuriousVector fetch Offset $010E0 Bit Name Timer Current Count Registers Timer Base Count Registers Count Inhibit. Setting this bit to 1 inhibits counting for This timer. Setting the bit to 0 allows counting to proceedBase Count. This field contains the 31-bit count for this Bit transitions from a 1 to a 0, the value is copied into Timer Destination Registers Setting this bit to a 0 enables active low or negative edge External Source Vector/Priority RegistersPOL Sense External Source Destination Registers Raven-Detected Errors Vector/Priority Register Offset $10200 Bit Name Raven-Detected Errors Destination Register Offset $10210 Bit Name Offset Processor $20080 $21080 Bit Name Zero is assumed. Writing to this register signals the end Interrupt Acknowledge RegistersEnd-of-Interrupt Registers End Of Interrupt. There is one EOI register per External Interrupt Service Programming Notes Reset State Dynamically Changing I/O Interrupt Configuration Interprocessor Interrupts EOI Register Interrupt Acknowledge RegisterMode Current Task Priority Level Architectural Notes Page Features of the Falcon Chip Set Dram Block Diagrams Falcon Pair Used with Dram in a System Falcon Internal Data Paths Simplified Overall Dram Connections Performance Bit Ordering ConventionFour-beat Reads/Writes Single-beat Reads/Writes Dram Speeds PowerPC 60x Bus to Dram Access Timing 70ns Page Devices Clock Periods Required For Total Access Type2nd 3rd 4th Beat PowerPC 60x Bus to Dram Access Timing 60ns Page Devices 2nd 3rd 4th Clocks Beat PowerPC Bus to Dram Access Timing 50ns Hyper Devices ROM/Flash Speeds PowerPC 60x Bus Interface Responding to Address TransfersCompleting Data Transfers Cache Coherency L2 Cache Support Cache Coherency RestrictionsCycle Types Error Reporting Single-Bit Dram Tester Error LoggingROM/Flash Interface Functional Description $XXFFFFF8 $7FFFFC $XXFFFFF9 $7FFFFD$XXFFFFFA $7FFFFE $XXFFFFFB $7FFFFF $X3FFFFF0 $7FFFFE $X3FFFFF1 $7FFFFE$X3FFFFF2 $7FFFFE $X3FFFFF3 $7FFFFE Refresh/Scrub Blocks a and/or B Present, Blocks C and D Not Present Blocks a and/or B Present, Blocks C and/or D Present Chip Defaults Dram Arbitration External Register Set CSR AccessesCSR Architecture Data Path for Reads from the Falcon Internal CSRs Data Path for Writes to the Falcon Internal CSRs Memory Map for Byte Reads to CSR 1906 Memory Map for 4-Byte Reads to CSR Register Summary Detailed Register Bit Descriptions 10. Register Summary Programming Model Test D3 Lower 32 Bits Vendor/Device Register Address $FEF80000 Bit Name Revision ID/ General Control Register Read Zero Read only 11. ram spd1,ram spd0 and Dram Type Ram spd0,ram spd1Ram spd0, ram spd1 Dram Speed Dram Type Ram a/b/c/d en Dram Attributes RegisterRam a/b/c/d siz0-2 BlockA/B/C/D Configurations Ram a/b/c/d Block Size Devices Used Technology Comments0MB SIMM/DIMM Dram Base Register RAM A/B/C/D BaseCLK Frequency Register CLK Frequency ECC Control Register RefdisRwcb Read Zero 11707.00 Falcon ECC Memory Controller Chip Set Tien SienMien Mcken Elog Esen Embt Error Address Register Address $FEF80038 Bit Name Rtest0,rtest1,rtest2 Test Mode selected 13. rtest Encodings Refresh/Scrub Address Register Address $FEF80048 Bit Name ROM a Base 1Mbyte of Block a also appears at $FFF00000 14. ROM Block a Size Encoding 15. romarv and rombrv EncodingRom a siz Block Size 1MB 16. Read/Write to ROM/Flash Cycle Transfer Alignment Romx64 Romxwe Falcon Response ROM B Base ROM B Base/Size Register1Mbyte of Block B also appears at $FFF00000 17. ROM Block B Size Encoding Rom b siz Block Size Dram Tester Control Registers Bit CounterCTR32 is a 32-bit, free-running counter that increments Has been programmed properly. Notice that CTR32 is Address $FEF80400 Bit Name Power-Up Reset Status RegisterAddress $FEF80500 Bit Name External Register Set Address $FEF88000 $FEF8FFF8 Bit Name Parity Checking on the PowerPC Bus Software ConsiderationsProgramming ROM/Flash Devices Writing to the Control Registers Sizing Dram Software Considerations 19. PowerPC 60x Address to Dram Address Mappings 18. Sizing Addresses1024MB 256MB 128MB 64MB 32MB 16MB ROW ECC Codes 20. Syndrome Codes Ordered by Bit in ErrorBit Syndrome 20. Syndrome Codes Ordered by Bit in Error 21. Single-Bit Errors Ordered by Syndrome Code $AF $CF $EF 10. PowerPC Data to Dram Data Correspondence Data Paths 22. PowerPC Data to Dram Data Mapping Page Universe VMEbus to PCI Chip Features of the Universe Asic − BLT, ADOH, RMW, Lock Block Diagram Architectural Diagram for the Universe Universe as VMEbus Slave PCI Bus Interface Universe as VMEbus Master Interrupter Universe as PCI Slave Universe as PCI Master DMA Controller VMEbus Interrupt Handling Universe Control and Status Registers Ucsr Ucsr Access Mechanisms Universe Register Map Offset Register Name LSI2BS LSI2BDLSI2TO LSI3BS Dcpp DgcsDllue Linten VSI0BD F0C VSI1BS F1CVSI2CTL F2C VSI2BS Universe Chip Problems after PCI Reset Description Workarounds Method Example 1 MVME2600 Series Board Exhibits PCI Reset Problem Examples Example 2 MVME3600 Series Board Acts Differently Run the init code and the LSI0 registers become Example 3 Universe Chip is Checked at Tundra Universe VMEbus to PCI Chip PCI Arbitration PCI Arbitration AssignmentsPci Bus Request PCI Masters PIB Interrupt Handling MVME2300 Series Interrupt Architecture RavenMPIC RavenMPIC Interrupt AssignmentsEdge Polarity Interrupt Source Level IRQ14 InterruptsIRQ15 PIB Interrupt Handler Block Diagram PIB PCI/ISA Interrupt Assignments Edge ISA DMA Channels Reset switch Sources of ResetExceptions Soft Reset Reset Sources and Devices AffectedSources of Reset Devices Affected Error Notification and Handling Error Notification and HandlingCause Action Endian Issues Big-Endian Mode Little-Endian Mode Processor/Memory Domain Role of the Raven AsicPCI Domain PCI/Ethernet VMEbus Domain Role of the Universe AsicPCI-Graphics Default Mapping for FFF00000-FFFFFFFF ROM/Flash Bank DefaultROM/Flash Initialization Page Motorola Computer Group Documents Document Title Publication Number Manufacturers’ Documents Document Title and Source Publication Number MPCFPE/AD EK-DE500-OM ANSI/IEEE Related SpecificationsIEC 821 BUS Isbn MPR-PPC-RPU-02TIA/EIA-232 Page Glossary O S S a R Y Enhanced Integrated Drive Electronics. An improved version PCI. Used in the reference platform specification. IBM Computers developed by the IBM Corporation. PowerPC is IBM Signal Computing System Architecture. a hardware model for See 10base-2 Page Index PCI 1-13 processor IN-3 MPC PCI IN-5 Configaddress 2-56CONFIGDATA IN-7 IN-8