PCI Spread I/O Address Translation | Motorola MVME2300 Series

2

Raven PCI Bridge ASIC

The Raven will perform spread I/O addressing when the MEM bit is clear and the IOM bit is set. The Raven will take the MPC address, apply the offset specified in the MSOFFx register, and map the result to PCI as shown in Figure 2-6.

.

MPC Address + Offset

31	12	11	5 4		0

31				25	24	5 4
00 00 00	0	0	0	0

PCI Address

0

1915 9702

Figure 2-6. PCI Spread I/O Address Translation

Spread I/O addressing allows each PCI device’s I/O registers to reside on a different MPC memory page, so device drivers can be protected from each other using memory page protection.

All I/O accesses must be performed within natural word boundaries. Any I/O access that is not contained within a natural word boundary will result in unpredictable operation. For example, an I/O transfer of four bytes starting at address $80000010 is considered a valid transfer. An I/O transfer of four bytes starting at address $80000011 is considered an invalid transfer since it crosses the natural word boundary at address $80000013/$80000014.

Generating PCI Configuration Cycles

The Raven uses configuration mechanism #1 as defined in PCI Local Bus Specification 2.0 to generate configuration cycles. Please refer to the specification for a complete description of this function.

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Image 92

Motorola MVME2300 Series manual PCI Spread I/O Address Translation, Generating PCI Configuration Cycles

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 Front Panel Functional DescriptionVMEbus Interface 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 Bfff Ffff Processor Prep Memory MapPrep Memory Map Example 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 Universe PCI Register Values for Chrp Memory Map Configuration Register Value Address Offset Register NameRaven 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 L2TYPE03 MSPD01RA/BTYP02 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 Pcixp PMC2P PMC1P Vmep Lanp Base Module Feature RegisterBase Module Feature Register Offset $0802 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 21. Z8536 CIO Port Pin Assignments Z8536 CIO Port PinsPort Signal Direction Descriptions Pin Name PC3 BASETYP1 ISA DMA ChannelsPC2 BASETYP0 Page Function Features FeaturesFeatures of the Raven Asic 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 Type MPC Transfer Size TT0-TT4 PCI Command CodeMPC Transfer Types 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 Address/Data Stepping ArbitrationArbitration Latency PCI Cycle Type Generating PCI CyclesGenerating PCI Memory and I/O Cycles Generating PCI Configuration Cycles PCI Spread I/O Address Translation Functional Description Generating PCI Special Cycles Device Number Address Bit Generating PCI Interrupt Acknowledge Cycles When MPC Devices are Big-EndianEndian Conversion 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 Devid Vendor ID/Device ID RegistersVenid General Control-Status/Feature Registers Revision ID RegisterRevid Revision ID. Identifies the Raven revision level. This Flbrd BhogMarb Mpic Current MPC Data Bus Master MIDxFeat Prescaler Adjust Register Operation Reset $00Operation Reset $00 $B4 MPC Arbiter Control Register MPC Error Enable Register Matom Smam RtamMatoi Perri Mato MPC Error Status RegisterOVF 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 MSOFF3 WpenIOM 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 Be compared with the upper 16 bits of the incoming PCI To access MPC bus resources. The value of this field willPCI Slave Address 0,1,2 and 3 Registers PCI Slave Attribute/ Offset 0,1,2 and 3 Registers INVTransfer type code which specifies the current transaction GBL Conceptual perspective from the PCI bus Configaddress RegisterPerspective from the MPC bus in Big-Endian mode Perspective from the MPC bus in Little-Endian mode REGFUN DEV BUS EN EnableConfigdata Register Data ‘D’ Data ‘C’ Data ‘B’ Data ‘A’ Operation Reset Data ‘B’ Data ‘C’ Data ‘D’ Operation Reset Architecture FeaturesRaven Interrupt Controller Processor’s Current Task Priority Readability of CSRInterrupt Source 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 Selector is Program-Visible RegistersInterrupt Pending Register IPR Interrupt Router In-Service Register ISRInterrupt Request Register IRR Raven PCI Bridge Asic Mpic Registers RavenMPIC Registers10. RavenMPIC Register Map Off $011E0 $010E0$010F0 $100E0 $100F0 $101E0 $101F0 VID Feature Reporting RegisterNcpu 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 Four-beat Reads/Writes Bit Ordering ConventionPerformance 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 Cycle Types Cache Coherency RestrictionsL2 Cache Support Error Reporting Single-Bit ROM/Flash Interface Error LoggingDram Tester 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 CSR Architecture CSR AccessesExternal Register Set 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 Ram spd0, ram spd1 Dram Speed Dram Type Ram spd0,ram spd111. ram spd1,ram spd0 and Dram Type Ram a/b/c/d siz0-2 Dram Attributes RegisterRam a/b/c/d en 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 1Mbyte of Block B also appears at $FFF00000 ROM B Base/Size RegisterROM B Base 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 $FEF80500 Bit Name Power-Up Reset Status RegisterAddress $FEF80400 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 Bit Syndrome 20. Syndrome Codes Ordered by Bit in ErrorECC Codes 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 IRQ15 InterruptsIRQ14 PIB Interrupt Handler Block Diagram PIB PCI/ISA Interrupt Assignments Edge ISA DMA Channels Exceptions Sources of ResetReset switch Soft Reset Reset Sources and Devices AffectedSources of Reset Devices Affected Cause Action Error Notification and HandlingError Notification and Handling Endian Issues Big-Endian Mode Little-Endian Mode Processor/Memory Domain Role of the Raven AsicPCI Domain PCI/Ethernet PCI-Graphics Role of the Universe AsicVMEbus Domain ROM/Flash Initialization ROM/Flash Bank DefaultDefault Mapping for FFF00000-FFFFFFFF Page Motorola Computer Group Documents Document Title Publication Number Manufacturers’ Documents Document Title and Source Publication Number MPCFPE/AD EK-DE500-OM IEC 821 BUS Related SpecificationsANSI/IEEE TIA/EIA-232 MPR-PPC-RPU-02Isbn 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