General RapidIO System | Texas Instruments TMS320TCI648x instruction

User's Guide

SPRUE13A – September 2006

Serial RapidIO (SRIO)

1Overview

The RapidIO peripheral used in the TMS320TCI648x is called a serial RapidIO (SRIO). This chapter describes the general operation of a RapidIO system, how this module is connected to the outside world, the definitions of terms used within this document, and the features supported and not supported for SRIO.

1.1General RapidIO System

RapidIO® is a non-proprietary high-bandwidth system level interconnect. It is a packet-switched interconnect intended primarily as an intra-system interface for chip-to-chip and board-to-board communications at Gigabyte-per-second performance levels. Uses for the architecture can be found in connected microprocessors, memory, and memory mapped I/O devices that operate in networking equipment, memory subsystems, and general purpose computing. Principle features of RapidIO include:

∙Flexible system architecture allowing peer-to-peer communication

∙Robust communication with error detection features

∙Frequency and port width scalability

∙Operation that is not software intensive

∙High bandwidth interconnect with low overhead

∙Low pin count

∙Low power

∙Low latency

1.1.1RapidIO Architectural Hierarchy

RapidIO is defined as a 3-layer architectural hierarchy.

∙Logical layer: Specifies the protocols, including packet formats, which are needed by endpoints to process transactions

∙Transport layer: Defines addressing schemes to correctly route information packets within a system

∙Physical layer: Contains the device level interface information such as the electrical characteristics, error management data, and basic flow control data

In the RapidIO architecture, a single specification for the transport layer is compatible with differing specifications for the logical and physical layers (see Figure 1).

16	Serial RapidIO (SRIO)	SPRUE13A –September 2006
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Texas Instruments TMS320TCI648x manual General RapidIO System, RapidIO Architectural Hierarchy

Contents

Users Guide Submit Documentation Feedback Contents Errrstevnticsr Port Link Maintenance Request CSR n SP n Lmreq List of Figures INTDSTnRATECNTL Interrupt Rate Control Register Transmit Cppi Supported Flow Mask Registers Port-Write-In Capture CSRs List of Tables PF16BCNTL Registers LSUnREG6 Registers and the Associated LSUs SP n Errdet Registers and the Associated Ports Read This First Trademarks General RapidIO System RapidIO Architectural Hierarchy Overview Physical Layer 1x/4x LP-Serial Specification RapidIO Interconnect Architecture RapidIO Feature Support in Srio Features Supported in Srio Peripheral Features Not Supported Standards External Devices RequirementsTI Devices Supported By This Document TI Devices Supported By This Document Overview Peripheral Data FlowRegisters Checked for Multicast DeviceID Registers Checked For Multicast DeviceID Srio Packets Operation Sequence Operation Sequence Example Packet Streaming Write Control Symbols 4x RapidIO Packet Data Stream Streaming-Write Class Srio Pins Srio Packet TypePacket Types Ftype Ttype Packet Type Functional Operation Component Block DiagramPin Description Srio Component Block Diagram Enabling the PLL Serdes Macro and its ConfigurationsMPY Enpll Bit Field Value Description MPY Line Rate versus PLL Output Clock Frequency Effect of the Rate BitsFrequency Range versus MPY Value Enabling the Receiver LOS Align Term Invpair Rate Buswidth Enrx CDRBit Field LOS Enabling the Transmitter EQ BitsCFGRX22-19 DE Bits of SERDESCFGTXnCNTL SwingAmplitude Reduction DE Bits Serdes Configuration Example Swing Bits of SERDESCFGTXnCNTLDirect I/O Operation Swing Bits LSU Control/Command Register Fields LSU Register Field RapidIO Packet Header Field LSU Register Field Function LSU Status Register FieldsBSY LSU Registers Timing Example Burst Nwriter Detailed Data Path Description Direct I/O TX Operation Write Transactions Read Transactions Segmentation Direct I/O RX Operation Reset and Power Down State Message Passing RX Operation Cppi RX Scheme for RapidIO Message Request Packet RX DMA State Completion Pointer CP Address Offset 680h-6BCh Mailbox to Queue Mapping Register L n Rxumapl nMailbox to Queue Mapping Register H n Rxumaph n Bit Name Description RX Buffer Descriptor Field Descriptions Field Description DSP core uses this bit to reclaim buffers RX Cppi Mode Explanation Srio Functional Description Cppi Boundary Diagram TX Operation TX DMA State Completion Pointer CP Address Offset 58h-5BCh TX Buffer Descriptor Field Definitions TX Buffer Descriptor Field Definitions Field Description Ssize Srio Functional Description TXQUEUECNTL0 Address Offset 7E0h TXQUEUECNTL1 Address Offset 7E4hTXQUEUECNTL2 Address Offset 7E8h TXQUEUECNTL3 Address Offset 7ECh TXQUEUECNTL13-0 TXQUEUECNTL17-4TXQUEUECNTL111-8 TXQUEUECNTL23-0 TXQUEUECNTL37-4 TXQUEUECNTL33-0TXQUEUECNTL311-8 Reset and Power Down State RX Operation Message Passing Software RequirementsTX Operation Queue Mapping Initialization ExampleRX Buffer Descriptor RX Buffer Descriptors TX Buffer Descriptor Start Message Passing MaintenanceDoorbell Operation Examples of Doorbellinfo Designations See Figure Info Field SegmentsReg # Bit LSUnREG5 Atomic Operations Congestion Control Detailed Description Flowcntlid FL9 FL8 FL7 FL6 FL5 FL4 FL3 FL2 FL1 FL0 Endianness FL9 Translation for MMR space Endian Conversion TMS320TCI6482 Reset and Power Down Reset HierarchyBus Logical Block Reset and Power Down Summary Enable and Enable Status Registers Global Enable and Global Enable Status Field Descriptions Block Enable and Block Enable Status Field Descriptions EnstatRegisterBit Field Valu Description e Software Shutdown Details EmulationPeripheral Control Register PCR Field Descriptions Peren Soft Free TX Buffers, Credit, and Packet Reordering Peripheral Control Register PCR Field DescriptionsMultiple Ports With 1x Operation Single Port With 1x or 4x Operation Unavailable Outbound Credit Enabling the Srio Peripheral Port Mode Register Settings13.2 PLL, Ports, Device ID and Data Rate Initializations Peripheral Initializations Set Device ID Registers Assert the Peren bit to enable logical layer data flow Bootload CapabilityConfiguration and Operation Read register to check portx1-4 OK bit Device Wakeup Bootload Data MovementRX Multicast Support Multicast DeviceID Operation Daisy Chain Operation and Packet ForwardingEnabling Multicast and Packet Forwarding 16BITDEVIDUPBOUND 16BITDEVIDLOWBOUND Outbound Port8BITDEVIDUPBOUND 8BITDEVIDLOWBOUND For an LSU or the TXU For the MAU or the RXU Msgreqtimeout PktrspnstimeoutRxiodmaaccess Unsolicitedrspns CPU Interrupts General Description Interrupt Condition Status and Clear Registers Interrupt Condition Status and Clear Bits Doorbell Interrupt Condition Status and Clear Registers Doorbell 2 Interrupt Condition Status and Clear Registers Cppi Interrupt Condition Status and Clear Registers RX Cppi Interrupt Condition Status and Clear Registers LSU Interrupt Condition Status and Clear Registers Bit Associated LSU Interrupt Condition LSU4LSU3 LSU2 ICS11 ICS10 ICS9 ICS8 ICS2 ICS1 ICS0ICC11 ICC10 ICC9 ICC8 ICC2 ICC1 ICC0 Interrupt Function Interrupt Clearing Sequence for Special Event Interrupts1st Step Nd Step 3rd Step Interrupt Condition Routing Registers Interrupt Condition Routing OptionsDoorbell Interrupt Condition Routing Registers Interrupt Function St Step Nd Step Rd Step Cppi Interrupt Condition Routing Registers ICR7 ICR6 ICR5 ICR4ICR3 ICR2 ICR1 ICR0 ICR15 ICR14 ICR13 ICR12 TX Cppi Interrupt Condition Routing Registers LSU Interrupt Condition Routing Registers ICR23 ICR22 ICR21 ICR20 ICR19 ICR18 ICR17 ICR16ICR31 ICR30 ICR29 ICR28 ICR27 ICR26 ICR25 ICR24 Interrupt Status Decode Registers ICR2 ICR1 ICR0 Interrupt Status Decode Register INTDSTnDECODE Interrupt Generation Interrupt Pacing Interrupt Handling INTDSTnRATECNTL Interrupt Rate Control Register 101 Serial RapidIO Srio Registers IntroductionOffset Acronym Register Description Serial RapidIO Srio Registers Offset Acronym Register Description INTDST3DECODE INTDST4DECODEINTDST5DECODE INTDST6DECODE QUEUE1TXDMAHDP QUEUE15RXDMAHDP QUEUE0RXDMACPQUEUE1RXDMACP QUEUE2RXDMACP RXUMAPL7 RXUMAPH7RXUMAPL8 RXUMAPH8 RXUMAPL30 RXUMAPH30RXUMAPL31 RXUMAPH31 SP1CTL Spipdiscoverytimer SP0SILENCETIMERSP1SILENCETIMER SP2SILENCETIMER Peripheral Identification Register PID Peripheral ID Register PID Field DescriptionsType Class REV Peripheral Control Register PCR Halts Peripheral Settings Control Register Persetcntl Prescalerselect Enable Serdes PLL Peripheral Global Enable Register Gblen Peripheral Global Enable Register Gblen Field Descriptions Peripheral Global Enable Status Register Gblenstat MMRs for the Srio peripheral Block n Enable Register BLKnEN Block n Enable Registers and the Associated BlocksBlock n Enable Register BLKnEN Field Descriptions Register Address Offset Associated Block Block n Enable Status Register BLKnENSTAT Block n Enable Status Registers and the Associated Blocks RapidIO DEVICEID1 Register DEVICEIDREG1 RapidIO DEVICEID1 Register DEVICEIDREG1 Field Descriptions8BNODEID 16BNODEID RapidIO DEVICEID2 Register DEVICEIDREG2 RapidIO DEVICEID2 Register DEVICEIDREG2 Field Descriptions PF16BCNTL Registers Register Address Offset Packet Forwarding Register n for 8-Bit Device IDs PF8BCNTLn PF8BCNTL Registers SERDESCFGRXnCNTL Registers and the Associated Ports Register Address Offset Associated Port Via a 50 pF capacitor to Vssa 127 SERDESCFGTX3CNTL SERDESCFGTXnCNTL Registers and the Associated PortsSwing Invpair Rate Buswidth Entx 129 Serdes Macro Configuration Register n SERDESCFGnCNTL SERDESCFGnCNTL Registers and the Associated Ports 131 DOORBELLn Interrupt Condition Status Register DOORBELLnICSR Doorbell nICSR Registers DOORBELLn Interrupt Condition Clear Register DOORBELLnICCR Doorbell nICCR Registers RX Cppi Interrupt Status Register Rxcppiicsr RX Cppi Interrupt Clear Register Rxcppiiccr TX Cppi Interrupt Status Register Txcppiicsr TX Cppi Interrupt Clear Register Txcppiiccr LSU Interrupt Condition Status Register Lsuicsr ICS31 139 140 LSU Interrupt Condition Clear Register Lsuiccr 31-17 Reserved These reserved bits return 0s when read Errrstevnticcr Field Descriptions Doorbell nICRR Registers Field Value Description = 0 to Eight interrupt destinations INTDST0-INTDST7 146 LSU Interrupt Condition Routing Registers LSUICRR0-LSUICRR3 LSU Interrupt Condition Routing Register Field Descriptions = 0 to 2, 8 to 11, Interrupt destinations INTDST0-INTDST7 Interrupt Status Decode Register INTDSTnDECODE Destination TX buffer descriptor queue 4 bit 4 of Txcppiicsr ∙ Doorbell 0, bit 15 bit 15 of DOORBELL0ICSR ISD2 ISD3ISD1 INTDSTn Interrupt Rate Control Register INTDSTnRATECNTL Countdownvalue LSUn Control Register 0 LSUnREG0 LSUnREG0 Registers and the Associated LSUsLSUn Control Register 0 LSUnREG0 Field Descriptions Addressmsb For packet type 8 maintenance packet LSUn Control Register 1 LSUnREG1LSUnREG1 Registers and the Associated LSUs LSUn Control Register 1 LSUnREG1 Field Descriptions LSUn Control Register 2 LSUnREG2 LSUnREG2 Registers and the Associated LSUsLSUn Control Register 2 LSUnREG2 Field Descriptions Dspaddress LSUn Control Register 3 LSUnREG3 LSUnREG3 Registers and the Associated LSUsLSUn Control Register 3 LSUnREG3 Field Descriptions Bytecount LSUnREG4 Registers and the Associated LSUs LSUn Control Register 4 LSUnREG4LSUn Control Register 4 LSUnREG4 Field Descriptions LSUnREG5 Registers and the Associated LSUs LSUn Control Register 5 LSUnREG5LSUn Control Register 5 LSUnREG5 Field Descriptions LSUn Control Register 6 LSUnREG6 LSUnREG6 Registers and the Associated LSUsLSUn Control Register 6 LSUnREG6 Field Descriptions Completioncode BSY LSUn Congestion Control Flow Mask Register LSUnFLOWMASKS LSUnFLOWMASKS Registers and the Associated LSUs LSU n supports Flow 8 from table entry QUEUEnTXDMAHDP Registers Register QUEUEnTXDMACP Registers QUEUEnRXDMAHDP Registers QUEUEnRXDMACP Registers Rxcp Transmit Queue Teardown Register Txqueueteardown Txcppiflowmasks Registers and the Associated TX Queues TX Queue n Flowmask Field Descriptions Queue n supports Flow 12 from table entry Receive Queue Teardown Register Rxqueueteardown Receive Cppi Control Register Rxcppicntl Receive Cppi Control Register Rxcppicntl Field Descriptions TXQUEUECNTL0 Address Offset 07E0h TXQUEUECNTL1 Address Offset 07E4hTXQUEUECNTL2 Address Offset 07E8h TXQUEUECNTL3 Address Offset 07ECh Field Pair TXQUEUECNTL211-8 Mailbox to Queue Mapping Registers RXUMAPLn and RXUMAPHn 0890h Mapper Lettermask For a single-segment messageFor a multi-segment message Letter Queueid Segmentmapping Flow Control Table Entry Register n FLOWCNTLn Flowcntl n Registers Device Identity CAR Devid Device Identity CAR Devid Field DescriptionsDeviceidentity Devicevendoridentity Deviceidentity Device Information CAR Devinfo Device Information CAR Devinfo Field DescriptionsDevicerev 31-0 Assembly Identity CAR Asblyid Assembly Identity CAR Asblyid Field DescriptionsAssyidentity Assyvendoridentity Assyidentity Assembly Information CAR Asblyinfo Assembly Information CAR Asblyinfo Field DescriptionsExtendedfeaturesptr Assyrev Processing Element Features CAR Pefeat Processing Element Features CAR Pefeat Field Descriptions Source and target of an operation. All PEs shall at minimum Source Operations CAR Srcop Source Operations CAR Srcop Field Descriptions Destination Operations CAR Destop Destination Operations CAR Destop Field DescriptionsRead Write Streamwrite Writewith Datamess Doorbell Resp Andswap Atomic Addressing Processing Element Logical Layer Control CSR PellctlExtendedaddressingcontrol Lcsba Local Configuration Space Base Address 0 CSR LclcfghbarBit Field Value Local Configuration Space Base Address 1 CSR Lclcfgbar Base Device ID CSR Baseid Base Device ID CSR Baseid Field DescriptionsBasedeviceid Largebasedeviceid Host Base Device ID Lock CSR Hostbaseidlock Hostbasedeviceid Component Tag CSR Comptag Field Descriptions Component Tag CSR ComptagComponenttag Efptr Efid Efptr Timeoutvalue Port Link Timeout Control CSR Spltctl Field DescriptionsPort Link Time-Out Control CSR Spltctl Port Response Time-Out Control CSR Sprtctl Port General Control CSR Spgenctl Port General Control CSR Spgenctl Field Descriptions Port Link Maintenance Request CSR n SPnLMREQ CommandSPnLMREQ Registers and the Associated Ports SP2LMREQ Port Link Maintenance Response CSR n SPnLMRESP SPnLMRESP Registers and the Associated Ports Port Local AckID Status CSR n SPnACKIDSTAT SPnACKIDSTAT Registers and the Associated Ports Port Error and Status CSR n SPnERRSTAT Field Descriptions Port Error and Status CSR n SPnERRSTATSPnERRSTAT Registers and the Associated Ports Outputerrorenc OutputerrorstpInputerrorenc Inputerrorstp Portok Portuninitialized SPnCTL Registers and the Associated Ports Port Control CSR n SPnCTLPort Control CSR n SPnCTL Field Descriptions Portdisable OutputportenableInputportenable Errorcheckdisable Rather than a parallel port Error Reporting Block Header Register Errrptbh Logical/Transport Layer Error Detect CSR Errdet RX I/O DMA access error Logical/Transport Layer Error Enable CSR Erren Pktresptimeoutenable UnsolicitedrespenableUnsupportedtransenable Rxcppisecurityenable Logical/Transport Layer High Address Capture CSR Haddrcapt ADDRESS6332 ADDRESS313 Logical/Transport Layer Address Capture CSR AddrcaptXamsbs Logical/Transport Layer Device ID Capture CSR Idcapt Msbdestid DestidMsbsourceid Sourceid Msbdestid Logical/Transport Layer Control Capture CSR Ctrlcapt Ftype Ttype MsginfoImpspecific Ftype Port-Write Target Device ID CSR Pwtgtid Port-Write Target Device ID CSR Pwtgtid Field DescriptionsDeviceidmsb Deviceid Port Error Detect CSR n SPnERRDET Field Descriptions Port Error Detect CSR n SPnERRDETSPnERRDET Registers and the Associated Ports Protocolerror DelineationerrorLinktimeout Rcvdpktnotaccpt Port Error Rate Enable CSR n SPnRATEEN Field Descriptions Port Error Rate Enable CSR n SPnRATEENSPnRATEEN Registers and the Associated Ports Protocolerroren DelineationerrorenLinktimeouten Pktunexpectedackiden Port n Attributes Error Capture CSR 0 SPnERRATTRCAPTDBG0 SPnERRATTRCAPTDBG0 Registers and the Associated Ports Port n Error Capture CSR 1 SPnERRCAPTDBG1 Description Case of a control-symbol errorCase of a packet error SPnERRCAPTDBG1 Registers and the Associated Ports Port n Error Capture CSR 2 SPnERRCAPTDBG2 SPnERRCAPTDBG2 Registers and the Associated Ports Port n Error Capture CSR 3 SPnERRCAPTDBG3 SPnERRCAPTDBG3 Registers and the Associated Ports Port n Error Capture CSR 4 SPnERRCAPTDBG4 SPnERRCAPTDBG4 Registers and the Associated Ports Port Error Rate CSR n SPnERRRATE Field Descriptions Port Error Rate CSR n SPnERRRATESPnERRRATE Registers and the Associated Ports Port Error Rate Threshold CSR n SPnERRTHRESH SPnERRTHRESH Registers and the Associated Ports Discoverytimer Pwtimer Port IP Mode CSR Spipmode Port IP Mode CSR Spipmode Field Descriptions Rsten RstcsPwen Pwirq Port IP Prescaler Register Ipprescal Field Descriptions Port IP Prescaler Register IpprescalPrescale Port-Write-In Capture CSRs SPIPPWINCAPT0-3 Port-Write-In Capture CSR Field Descriptions Port Reset Option CSR n SPnRSTOPT Port Reset Option CSR n SPnRSTOPT Field DescriptionsSPnRSTOPT Registers and the Associated Ports Portid Port Control Independent Register n SPnCTLINDEP SPnCTLINDEP Registers and the Associated Ports Senddbgpkt IlltransenIlltranserr Maxretryen SPnSILENCETIMER Registers and the Associated Ports Port Silence Timer n Register SPnSILENCETIMERSilencetimer Multevntcs SPnMULTEVNTCS Registers and the Associated PortsBit Field Value Description 31-0 Port Control Symbol Transmit n Register SPnCSTX SPnCSTX Registers and the Associated PortsSTYPE0 PAR0 PAR1 STYPE1 CMD Csemb STYPE0 Index Comptag Ctrlcapt Devinfo Pellctl Haddrcapt Lsuicsr 237 Pefeat 232 Srio Registers Rxcppicntl Rxcppiiccr Rxcppiicrr RXCPPIICRR2 Rxcppiicsr Broken link Degraded link Maximum retry error at port n Txqueueteardown Xoff Xon Important Notice