Lunch and Learn

June 2012 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. . • Small-Cell Internals • Small Cell based on BSC9131 • BSC913x Software Architecture • IPC Architecture • FAPI Messages to IPC Channel binding • Use Cases • Q&A

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 2 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. • Small Cell = Home or small office cellular base stations supporting the following standards:

• LTE-FDD/TDD

• WCDMA (HSPA+)

• CDMA2K

• TD-SCDMA

FAPI

L1 Stack

FAPI : • Small Cell Forum Femto Application Programming Interface

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 4 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. LTE L1 FAPI (p5/p7) LTE L2 Small Cell

Broadband Router

L1 Framework

X1-AP/ RoHC PDCP WCDMA Components (26.21x) S1-AP GTP-C RLC LTE Components (SP Lib)

GTP-U

MAC

PDSCH PUSCH PRACH SRS IKE/ CP WCDMA (25.32x) WCDMA

DL SCH UL SCH PDCCH PUCCH UIO PMAL L2 I/F L2 Linux N/W Stack S D O D S S PSC SSC L1 IF PHICH PFICH FAPI TCP/UDP SCTP IPSec

MCH PMCH BCH PBCH RT Sched ASF - IPSec IF4 IPC Driver IPC Driver MAPLE Abstraction Layer SEC Driver Eth Driver

L1 Dcache L1 I Cache L1 I Cache L1 DCache

L2/M2 Cache L2 Cache

Class ECM

RF I/F MAPLE B2F DDR SEC 4.0 VeTSEC

FSL BSP Linux Aricent FSL L1 Data Packet flow Control Packet flow Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 6 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. • Shared Library • Provides Zero Copy • Lock Free, No synchronization required • Independent Unidirectional Channels − Single Producer – Single Consumer • Multicore Ready

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 7 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. Eth/ Payload Eth/ Payload IPSec IPSec • Mutliple buffer domains Ciphering (SEC HW) Transport − Transport, GTP/PDCP L2 IP/UDP Payload GTP Payload − L2 /GTP

− L1 IP Payload IP Payload • zero-copy operation through use of SEC RoHC RoHC RoHC Payload engine between Payload domains Ciphering (SEC HW) Ciphering (SEC HW) • Custom buffer pools for all domains for optimum Ciphered data Ciphered data performance • Optimized PDCP Ciphered data PDCP Ciphered data implementation of virtual ↔ physical address translation RLC APIs as required for HW accelerator interfacing MAC • Asynchronous buffer L2/L1 IF (DMA HW) return L1 CRC

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 8 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. • Pointer Channel − Producer allocates memory and provides consumer the pointer via this channel.

Producer Consumer Shared Memory Buffer Phys Addr 0x0100 fsl_ipc_send_ptr(1, 0x100,0x1000) fsl_ipc_recv_ptr(1, &ptr, &size) Size 0x1000

Producer Num

Consumer Num

Zero Copy Lock Free IPC Channel Data Structure

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 9 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. • MSG Channel − For small messages. IPC copies producer buffer in a message ring. IPC later copies the message from message ring to consumer buffer. Consumer Producer Consumer Producer Memory Memory Buffer VirtAddr 0xaa100 Size 0x100 fsl_ipc_send_msg(1, 0xaa100, 0x100) fsl_ipc_recv_msg(1, ptr, &size)

0x8000 Producer Num 0x8800 Consumer Num

Message Ring IPC Channel Data Structure

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 10 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. • Tx Request Channel − For small messages and large PDU’s. IPC copies producer buffer in a message ring and uses DMA to linearize fragmented PDUs. Shared Consumer Memory Producer Consumer Producer Memory Memory Buffer VirtAddr 0xaa100 Size 0x100 fsl_ipc_send_txreq(1, 0xaa100, 0x100, fsl_ipc_recv_msg(1, ptr, &size) sg_list)

DMA

0xa000 0x8000 Producer Num 0x8800 Consumer Num

Shared Message Ring IPC Channel Data Structure Memory

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 11 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. L1 L2 L2=> L1 requests PARAM CONFIG L1=>L2 response/indications START PARAM Response Message STOP CONFIG Response Channel UL_CONFIG STOP Indicator DL_CONFIG ERROR Indicator HI_DIC0 Subframe Indicator TxRequest L2=>L1 RX_ULSCH Channel HARQ Tx.Request CRC RX_SR RX_CQL Pointer RACH Channel SRS

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 12 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. • Consumer Message Channels towards DSP can be placed in M2 memory for faster access

• Zero Copy is achieved in Tx.Request where the average buffer size is 9k, as DMA is involved

• IPC uses static binding of channels at compile time, channel numbers are integer values.

• L1/L2 share a common header file with channel numbers as constants

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 13 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. • On a multicore system Channels can be distributed among cores to do load balancing. • Same L2 stack can run on 9131,9132 and future architectures with minimal changes.

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 14 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. • SW optimization is key to achieve performance − Zero-copy through use of DMA engine − Driver optimization to application • Tight integration with L1 and L2 stacks drives optimized solution

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis, mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine, TM 15 Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. • [1] Small Cell Forum Specifications