Intel Native Loopback Accelerator iYunithi yokuSebenza (AFU) IsiKhokelo soMsebenzisi

Imixholo fihla

1 Intel Native Loopback Accelerator Functional Unit (AFU)

2 Malunga nolu xwebhu

3 IYunithi eSebenzayo yeNative Loopback Accelerator (AFU)

4 Imbali yoHlaziyo yoXwebhu lweNative Loopback Accelerator Functional Unit (AFU) IsiKhokelo soMsebenzisi

5 Amaxwebhu / Izibonelelo

5.1 Iimbekiselo

6 Izithuba eziyeleleneyo

Intel Native Loopback Accelerator Functional Unit (AFU)

Malunga nolu xwebhu

Iindibano
Uluhlu 1. IiNgqungquthela zoXwebhu

Indibano	Inkcazo
#	Yandulela umyalelo obonisa umyalelo oza kungeniswa njengengcambu.
$	Ibonisa umyalelo oza kungeniswa njengomsebenzisi.
Le fonti	Fileamagama, imiyalelo, namagama angundoqo ashicilelwe kulo mgca. Imigca yomyalelo emide ishicilelwe kulo mgca. Nangona imigca yomyalelo emide inokusonga kumgca olandelayo, ukubuya akuyonxalenye yomyalelo; sukucinezela ngenisa.
	Ibonisa umbhalo wesibambi-ndawo ovela phakathi kwezibiyeli ze-engile kufuneka itshintshwe ngexabiso elifanelekileyo. Musa ukufaka izibiyeli ze-engile.

Izishunqulelo
Uluhlu 2. Izifinyezo

Izishunqulelo	Ukwandiswa	Inkcazo
AF	Umsebenzi we-Accelerator	Umfanekiso ohlanganisiweyo we-Accelerator we-Hardware omiliselwe kwi-FPGA logic ekhawulezisa usetyenziso.
AFU	IYunithi eSebenzayo ye-Accelerator	I-Hardware Accelerator iphunyezwe kwingqiqo yeFPGA ekhuphela umsebenzi wokubala kwisicelo esivela kwi-CPU ukuphucula ukusebenza.
API	Ujongano lweNkqubo yokuSebenza	Iseti yeenkcazo zendlela engaphantsi, iiprothokholi, kunye nezixhobo zokwakha usetyenziso lwesoftware.
ASE	Imekobume yokulinganisa i-AFU	Ubume be-co-simulation evumela ukuba usebenzise isicelo esifanayo sokusingatha kunye ne-AF kwindawo yokulinganisa. I-ASE yinxalenye ye-Intel® Acceleration Stack yeeFPGAs.
I-CCI-P	I-Core Cache Interface	I-CCI-P lujongano olusemgangathweni olusetyenziswa zii-AFU ukunxibelelana nomamkeli.
CL	Cache Line	I-64-byte cache line
I-DFH	Isihloko soMsebenzi weSixhobo	Yenza uludwe oludityanisiweyo lwemibhalo engasentla kwekhasi ukunika indlela eyandisiweyo yokongeza iimpawu.
I-FIM	Umphathi we-FPGA Interface	I-FPGA hardware equlethe iYunithi ye-FPGA Interface (FIU) kunye nojongano lwangaphandle lwememori, uthungelwano, njl. I-Accelerator Function (AF) idibana neFIM ngexesha lokuqhuba.
I-FIU	IYunithi yoNxibelelwano lweFPGA	I-FIU ngumaleko wojongano lweqonga osebenza njengebhulorho phakathi kojongano lweqonga njengePCIe*, UPI kunye ne-AFU-side interfaces ezifana neCCI-P.
*iqhubekile...*

Intel Corporation. Onke Amalungelo Agciniwe. I-Intel, ilogo ye-Intel, kunye nezinye iimpawu ze-Intel ziimpawu zorhwebo ze-Intel Corporation okanye iinkampani eziphantsi kwayo. I-Intel iqinisekisa ukusebenza kweFPGA yayo kunye neemveliso zesemiconductor kwiinkcukacha zangoku ngokuhambelana newaranti esemgangathweni ye-Intel, kodwa inelungelo lokwenza utshintsho kuzo naziphi na iimveliso kunye neenkonzo nangaliphi na ixesha ngaphandle kwesaziso. I-Intel ayithathi xanduva okanye ityala elivela kwisicelo okanye ukusetyenziswa kwalo naluphi na ulwazi, imveliso, okanye inkonzo echazwe apha ngaphandle kokuba kuvunyelwene ngokubhaliweyo yi-Intel. Abathengi be-Intel bayacetyiswa ukuba bafumane inguqulelo yamva nje yeenkcazo zesixhobo ngaphambi kokuba baxhomekeke kulo naluphi na ulwazi olupapashiweyo naphambi kokubeka iiodolo zeemveliso okanye iinkonzo. *Amanye amagama kunye neempawu zingabangwa njengempahla yabanye.

Izishunqulelo	Ukwandiswa	Inkcazo
MPF	Memory Properties Factory	I-MPF siSisikelo soKwakha esiSiseko (BBB) esinokusisebenzisa ii-AFUs ukubonelela ngemisebenzi ye-CCI-P yokubunjwa kwetrafikhi kwiitransekshini neFIU.
Nksk	Umyalezo	Umyalezo - isaziso solawulo
NLB	Umthonyama Loopback	I-NLB yenza ukufunda nokubhala kwikhonkco yeCCI-P yokuvavanya uxhumano kunye nokugqithisa.
I-RdLine_I	Funda umgca awusebenzi	Isicelo seMemori esiFundiweyo, kunye neFPGA cache hint imiselwe ukuba ayisebenzi. Umgca awugcinwanga kwi-FPGA, kodwa unokubangela ungcoliseko lwe-FPGA kwindawo efihlakeleyo. Phawula: Indawo yokugcina tag ilandelela ubume besicelo kuzo zonke izicelo ezingekahlawulwa kwi-Intel Ultra Path Interconnect (Intel UPI). Ke ngoko, nangona i-RdLine_I iphawulwe njengengasebenziyo ekugqityweni kwayo, itya i-cache tag okwethutyana ukulandelela isimo sesicelo kwi-UPI. Esi senzo sinokukhokelela ekukhutshweni komgca we-cache, okukhokelela kungcoliseko lwe-cache. I-advantage yokusebenzisa i-RdLine_I kukuba ayilandelwa yi-CPU directory; ngaloo ndlela kuthintela ukukroba kwi-CPU.
I-RdLine-S	Funda umgca ekwabelwana ngawo	Isicelo sokufundwa kwenkumbulo kunye ne-FPGA icebiso lecache esetelwe ekwabelwana ngalo. Kwenziwa umzamo wokuyigcina kwi-cache yeFPGA kwindawo ekwabelwana ngayo.
I-WrLine_I	Bhala umgca awusebenzi	Isicelo sokuBhala iMemori, kunye ne-FPGA ingcebiso efihliweyo emiselwe ukuba ayisebenzi. I-FIU ibhala idatha ngaphandle kwenjongo yokugcina idatha kwi-cache ye-FPGA.
WrLine_M	Bhala umgca ulungisiwe	Isicelo sokuBhala iMemori, kunye ne-FPGA cache hint imiselwe kuModified. I-FIU ibhala idatha kwaye iyishiye kwi-cache ye-FPGA kwisimo esilungisiweyo.

Uluhlu lweenkcazelo zokukhawuleza
Itheyibhile 3. I-Acceleration Stack ye-Intel Xeon® CPU eneFPGAs Glossary

Ixesha	Ushunqulelo	Inkcazo
I-Intel Acceleration Stack ye-Intel Xeon® CPU eneFPGAs	Isitaki sokukhawulezisa	Ingqokelela yesoftware, i-firmware, kunye nezixhobo ezibonelela ngoqhagamshelo oluphuculweyo lokusebenza phakathi kwe-Intel FPGA kunye ne-Intel Xeon processor.
Intel FPGA Programmable Acceleration Card (Intel FPGA PAC)	Intel FPGA PAC	Ikhadi le-accelerator ye-PCIe FPGA. Iqulethe iFPGA Interface Manager (FIM) edityaniswa ne-Intel Xeon processor phezu kwebhasi yePCIe.

IYunithi eSebenzayo yeNative Loopback Accelerator (AFU)

Native Loopback (NLB) AFU Ngaphezuluview

I-NLB sample AFUs ziquka isethi yeVerilog kunye ne-System Verilog files ukuvavanya imemori efundwayo kwaye ibhale, i-bandwidth, kunye ne-latency.

Le phakheji iquka ii-AFU ezintathu onokuzakha kumthombo ofanayo we-RTL. Ubumbeko lwakho lwekhowudi yemvelaphi ye-RTL yenza ezi AFUs.

I-NLB Sample Accelerator Function (AF)
I-$OPAE_PLATFORM_ROOT/hw/sampLes uvimba weefayili ugcina ikhowudi yemvelaphi yezi zilandelayo ze-NLBample AFUs:

nlb_imowudi_0
nlb_mode_0_stp
nlb_imowudi_3

Phawula: I-$DCP_LOC/hw/sampLes directory igcina i-NLB sample AFUs ikhowudi yomthombo we-1.0 iphakheji yokukhupha.

Ukuqonda i-NLB sample AFU yemvelaphi yekhowudi yesakhiwo kunye nendlela yokuyakha, bhekisa kwesinye seziKhokelo zokuQala eziKhawulezayo zilandelayo (kuxhomekeke kwi-Intel FPGA PAC oyisebenzisayo):

Ukuba usebenzisa i-Intel PAC ene-Intel Arria® 10 GX FPGA, bhekisa kwi-IntelProgrammable Acceleration Card ene-Intel Arria 10 GX FPGA.
Ukuba usebenzisa i-Intel FPGA PAC D5005, bhekisa kwi-Intel Acceleration Stack Quick Start Guide for Intel FPGA Programmable Acceleration Card D5005.

Iphakheji yokukhulula ibonelela ngezi zintathu zilandelayoample AFs:

Imo ye-NLB 0 AF: ifuna hello_fpga okanye into eluncedo ye-fpgadiag ukwenza uvavanyo lwe-lpbk1.
Imowudi ye-NLB 3 AF: ifuna into eluncedo ye-fpgadiag ukwenza ukuphazamiseka, ukufunda, kunye nokubhala iimvavanyo.

Imo ye-NLB 0 stp AF: ifuna into eluncedo hello_fpga okanye fpgadiag ukwenza uvavanyo lwe-lpbak1.
Phawula: I-nlb_mode_0_stp iyafana ne-AFU njenge-nlb_mode_0 kodwa nge-Signal Tap debug feature yenziwe yasebenza.
I-fpgadiag kunye ne-hello_fpga eziluncedo zinceda i-AF efanelekileyo ukuxilonga, ukuvavanya kunye nokunika ingxelo kwi-hardware ye-FPGA.

Umzobo 1. I-Loopback yeNative (nlb_lpbk.sv) iNqanaba eliPhezulu le-Wrapper

Uluhlu 4. NLB Files

File Igama	Inkcazo
nlb_lpbk.sv	Isisongelo esikwinqanaba eliphezulu le-NLB esiqinisekisa umenzi-sicelo kunye nomlamli.
umlamli.sv	Uqinisekisa uvavanyo AF.
umceli.sv	Yamkela izicelo ezivela kwi-arbiter kwaye ifomethe izicelo ngokweenkcukacha zeCCI-P. Ukwasebenzisa ulawulo lokuhamba.
nlb_csr.sv	Iphumeza iirejista ze-64-bit yokufunda/ukubhala uLawulo kunye neSimo (CSR). Iirejista zixhasa zombini i-32- kunye ne-64-bit yokufunda nokubhala.
nlb_gram_sdp.sv	Izalisekisa i-generic ye-RAM ye-doal-port enezibuko elinye lokubhala kunye nezibuko elifundwayo elinye.

I-NLB kukuphunyezwa kwereferensi ye-AFU ehambelana ne-Intel Acceleration Stack ye-Intel Xeon CPU ene-FPGAs Core Cache Interface (CCI-P) Incwadi yeReferensi. Umsebenzi ophambili we-NLB kukuqinisekisa uqhagamshelo lomamkeli usebenzisa iipatheni ezahlukeneyo zofikelelo kwimemori. I-NLB iphinda ilinganise i-bandwidth kwaye ufunde / bhala latency. Uvavanyo lwe-bandwidth lunolu khetho lulandelayo:

Ifundwe nge-100%.
100% bhala
I-50% ifundwe kwaye i-50% ibhala

Ulwazi olunxulumeneyo

I-Intel Acceleration Stack iSikhokelo sokuQala ngokukhawuleza se-Intel Programmable Acceleration Card ene-Arria 10 GX FPGA

I-Acceleration Stack ye-Intel Xeon CPU ene-FPGAs Core Cache Interface (CCI-P) Incwadi yeReferensi
I-Intel Acceleration Stack Quick Guide for Intel FPGA Programmable Acceleration Card D5005

Ulawulo lweNative Loopback kunye neeNkcazo zeRejista yeSimo
Uluhlu 5. Amagama e-CSR, iidilesi neeNkcazelo

Idilesi ye-Byte (OPAE)	Ilizwi Idilesi (CCI-P)	Ukufikelela	Igama	Ububanzi	Inkcazo
0x0000	0x0000	RO	I-DFH	64	AF Device Feature Header.
0x0008	0x0002	RO	AFU_ID_L	64	AF ID ephantsi.
0x0010	0x0004	RO	AFU_ID_H	64	AF ID ephezulu.
0x0018	0x0006	Rsvd	CSR_DFH_RSVD0	64	Isinyanzelo sigciniwe 0.
0x0020	0x0008	RO	CSR_DFH_RSVD1	64	Isinyanzelo sigciniwe 1.
0x0100	0x0040	RW	CSR_SCRATCHPAD0	64	Irejista ye-Scratchpad 0.
0x0108	0x0042	RW	CSR_SCRATCHPAD1	64	Irejista ye-Scratchpad 2.
0x0110	0x0044	RW	CSR_AFU_DSM_BASE L	32	Iibhithi ezisezantsi ezingama-32 zedilesi yesiseko ye-AF DSM. Iibhithi ezi-6 ezisezantsi ziyi-4×00 kuba idilesi ihambelana ne-64-byte yesayizi yomgca we-cache.
0x0114	0x0045	RW	CSR_AFU_DSM_BASE H	32	Amasuntswana angama-32 aphezulu edilesi yesiseko ye-AF DSM.
0x0120	0x0048	RW	CSR_SRC_ADDR	64	Qala idilesi yendawo yesixhobo somthombo. Zonke izicelo ezifundiweyo zijolise kulo mmandla.
0x0128	0x004A	RW	CSR_DST_ADDR	64	Qala idilesi yendawo yendawo yesithinteli. Zonke izicelo ezibhaliweyo zijolise kulo mmandla
0x0130	Ngama-0x004C	RW	CSR_NUM_LINES	32	Inani lemigca yecache.
0x0138	0x004E	RW	CSR_CTL	32	Ilawula ukuhamba kovavanyo, ukuqala, ukumisa, ukunyanzelisa ukugqitywa.
0x0140	0x0050	RW	CSR_CFG	32	Qwalasela iiparamitha zovavanyo.
0x0148	0x0052	RW	CSR_INACT_THRESH	32	Umda wokungasebenzi.
0x0150	0x0054	RW	CSR_INTERRUPT0	32	I-SW yabela ukuphazamisa i-ID ye-APIC kunye neVector kwisixhobo.
DSM Offset Map
0x0040	0x0010	RO	DSM_STATUS	32	Ubume bovavanyo kunye nerejista yempazamo.

Uluhlu 6. CSR Bit Fields kunye ExampLes
Le theyibhile idwelisa amabala ebit e CSR axhomekeke kwixabiso le CSR_NUM_LINES, . Kwi-example ngezantsi = 14.

Igama	Ibala elincinci	Ukufikelela	Inkcazo
CSR_SRC_ADDR	[63:]	RW	2^(N+6)MB iindawo zedilesi ezilungelelanisiweyo ukuya ekuqaleni kwesithinteli sokufunda.
CSR_SRC_ADDR	[-1:0]	RW	0x0.
CSR_DST_ADDR	[63:]	RW	2^(N+6)MB iindawo zedilesi ezilungelelanisiweyo ukuya ekuqaleni kwesithinteli sokubhala.
CSR_DST_ADDR	[-1:0]	RW	0x0.
CSR_NUM_LINES	[31:]	RW	0x0.
*iqhubekile...*

Igama	Ibala elincinci	Ukufikelela	Inkcazo
	[-1:0]	RW	Inani lemigca yecache yokufunda okanye ukubhala. Lo mda ungahluka kuvavanyo ngalunye lwe-AF. Phawula: Qinisekisa ukuba umthombo kunye nezithinteli zendawo ekuyiwa kuyo zikhulu ngokwaneleyo ukuba zikwazi ukuthwala imigca ye-cache. CSR_NUM_LINES kufuneka ibengaphantsi okanye ilingane ne .
Ngala maxabiso alandelayo, cinga =14. Emva koko, CSR_SRC_ADDR kunye ne-CSR_DST_ADDR yamkela i-2^20 (0x100000).
CSR_SRC_ADDR	[31:14]	RW	1MB idilesi elungelelanisiweyo.
CSR_SRC_ADDR	[13:0]	RW	0x0.
CSR_DST_ADDR	[31:14]	RW	1MB idilesi elungelelanisiweyo.
CSR_DST_ADDR	[13:0]	RW	0x0.
CSR_NUM_LINES	[31:14]	RW	0x0.
CSR_NUM_LINES	[13:0]	RW	Inani lemigca yecache yokufunda okanye ukubhala. Lo mda ungahluka kuvavanyo ngalunye lwe-AF. Phawula: Qinisekisa ukuba umthombo kunye nezithinteli zendawo ekuyiwa kuyo zikhulu ngokwaneleyo ukuba zikwazi ukuthwala imigca ye-cache.

Itheyibhile 7. IiNdawo ezongezelelweyo ze-CSR Bit

Igama	Ibala elincinci	Ukufikelela	Inkcazo
CSR_CTL	[31:3]	RW	Igciniwe.
	[2]	RW	Nyanzela ukugqitywa kovavanyo. Ubhala iflegi yokugqibezela uvavanyo kunye nezinye izinto zokubala zokusebenza kwi-csr_stat. Emva kokunyanzelisa ukugqitywa kovavanyo, imeko ye-hardware iyafana nokugqitywa kovavanyo olunganyanzelwanga.
	[1]	RW	Iqala ukwenza uvavanyo.
	[0]	RW	Ukusetha kwakhona uvavanyo olusezantsi olusebenzayo. Xa iphantsi, zonke iiparamitha zoqwalaselo zitshintshela kumaxabiso azo angagqibekanga.
CSR_CFG	[29]	RW	cr_interrupt_testmode uvavanyo luyaphazamisa. Yenza uphazamiseko ekupheleni kovavanyo ngalunye.
	[28]	RW	cr_interrupt_on_error ithumela uphazamiseko xa kukho impazamo
			ukubhaqwa.
	[27:20]	RW	cr_test_cfg iqwalasela imo yovavanyo ngalunye.
	[13:12]	RW	cr_chsel ikhetha itshaneli ebonakalayo.
	[10:9]	RW	cr_rdsel iqwalasela uhlobo lwesicelo esifundiweyo. Iikhowudi zineekhowudi
			amaxabiso asebenzayo alandelayo:
			• 1'b00: RdLine_S
			• 2'b01: RdLine_I
			• I-2'b11: Imo edibeneyo
	[8]	RW	cr_delay_en yenza ukuba kufakwe ukulibaziseka okungahleliweyo phakathi kwezicelo.
	[6:5]	RW	Qwalasela imo yovavanyo,cr_multiCL-len. Amaxabiso asebenzayo ngu-0,1, kunye no-3.
	[4:2]	RW	cr_mode, iqwalasela indlela yovavanyo. La maxabiso alandelayo ayasebenza:
			• 3'b000: LPBK1
			• 3'b001: Funda
			• 3'b010: Bhala
			• 3'b011: TRPUT
*iqhubekile...*

Igama	Ibala elincinci	Ukufikelela	Inkcazo
			Ngolwazi oluthe kratya malunga nemo yovavanyo, jonga kwi Iindlela zoVavanyo isihloko esingezantsi.
	[1]	RW	c_cont ukhetha i-rollover yovavanyo okanye ukupheliswa kovavanyo. • Xa 1'b0, uvavanyo luyaphela. Ihlaziya ubume be-CSR xa CSR_NUM_LINES ubalo lufikelelwe. • Xa 1'b1, uvavanyo luqengqeleka luye kwidilesi yokuqala emva kokuba lufikelele kwi CSR_NUM_LINES ubalo. Kwimo ye-rollover, uvavanyo luphelisa kuphela ngempazamo.
	[0]	RW	cr_wrthru_en utshintsha phakathi kwe-WrLine_I kunye ne-Wrline_M yeentlobo zesicelo. • 1'b0: WrLine_M • 1'b1: WrLine_I
CSR_INACT_THRESHOLD	[31:0]	RW	Umda wokungasebenzi. Ibona ubude bezitali ngexesha lovavanyo. Ibala inani lemijikelo yokungenzi nto elandelelanayo. Ukuba ukungasebenzi kubalwa > CSR_INACT_THRESHOLD, akukho zicelo zithunyelwayo, akukho mpendulo zithunyelwayo ifunyenwe, kunye ne-inact_timeout isignali isetiwe. Ukubhala 1 ukuya CSR_CTL[1] kuvula le khawuntari.
CSR_INTERRUPT0	[23:16]	RW	INombolo yeVector yokuphazamisa kwisixhobo.
CSR_INTERRUPT0	[15:0]	RW	apic_id yi APIC OD yesixhobo.
DSM_STATUS	[511:256]	RO	Imposiso yokulahla imo yoVavanyo.
	[255:224]	RO	Phelisa ngaphezulu.
	[223:192]	RO	Qala ngaphezulu.
	[191:160]	RO	Inani lokuBhala.
	[159:128]	RO	Inani lokuFunda.
	[127:64]	RO	Inani leeWotshi.
	[63:32]	RO	Irejista yempazamo yovavanyo.
	[31:16]	RO	Thelekisa impumelelo counter.
	[15:1]	RO	Isazisi esisodwa sokubhala isimo ngasinye seDSM.
	[0]	RO	iflegi yokugqibezela uvavanyo.

Iindlela zoVavanyo
CSR_CFG[4:2] iqwalasela indlela yovavanyo. Ezi mvavanyo zine zilandelayo ziyafumaneka:

I-LPBK1: Olu luvavanyo lwekopi yememori. I-AF ikhuphela CSR_NUM_LINES ukusuka kumthombo webuffer ukuya kwindawo yokufikela. Ekugqityweni kovavanyo, isoftware ithelekisa umthombo kunye nebuffers yendawo.

Funda: Olu vavanyo lugxininisa indlela yokufunda kunye nemilinganiselo yokufunda i-bandwidth okanye i-latency. I-AF ifunda CSR_NUM_LINES ukuqala kwi CSR_SRC_ADDR. Oku kuphela i-bandwidth okanye uvavanyo lwe-latency. Ayiqinisekisi idatha efundiweyo.
Bhala: Olu vavanyo lugxininisa indlela yokubhala kunye nemilinganiselo yokubhala i-bandwidth okanye i-latency. I-AF ifunda CSR_NUM_LINES ukuqala kwi CSR_SRC_ADDR. Oku kuphela i-bandwidth okanye uvavanyo lwe-latency. Ayiqinisekisi idatha ebhaliweyo.

TRPUT: Olu vavanyo ludibanisa ukufunda nokubhala. Ifundeka CSR_NUM_LINES ukuqala kwindawo CSR_SRC_ADDR kwaye ibhala CSR_NUM_LINES ukuya CSR_SRC_ADDR. Ikwalinganisa i-bandwidth yokufunda nokubhala. Olu vavanyo alujongi idatha. Ukufunda nokubhala akukho kuxhomekeka

Le theyibhile ilandelayo ibonisa ukhowudo lwe CSR_CFG lweemvavanyo ezine. Le theyibhile icwangcisa kwaye CSR_NUM_LINES, =14. Ungatshintsha inani lemigca yecache ngokuhlaziya irejista yeCSR_NUM_LINES.

Itheyibhile 8. Iindlela zoVavanyo

FPGA Diagnostics: fpgadiag
Usetyenziso lwefpgadiag lubandakanya iimvavanyo ezininzi zokuxilonga, uvavanyo, kunye nengxelo kwihardware yeFPGA. Sebenzisa into eluncedo yefpgadiag ukuqhuba zonke iindlela zovavanyo. Ngolwazi oluthe kratya malunga nokusebenzisa usetyenziso lwefpgadiag, jonga kwicandelo le-fpgadiag kwi-Open Programmable Acceleration Engine (OPAE) Tools Guide.

Indlela ye-NLB0 Molo_FPGA Ukuhamba koVavanyo

I-Software iqalisa iMemo yeSixhobo seMemori (DSM) ukuya kwiqanda.
I-Software ibhala idilesi ye-DSM BASE kwi-AFU. CSR Bhala(DSM_BASE_H), CSRWrite(DSM_BASE_L)

Isoftware ilungisa umthombo kunye nesithinteli sememori yendawo ekuyiwa kuyo. Olu lungiselelo luthe ngqo kuvavanyo.
Isoftware ibhala CSR_CTL[2:0]= 0x1. Oku kubhala kuzisa uvavanyo ngaphandle kokusetha kwakhona kwaye kwindlela yoqwalaselo. Uqwalaselo lungaqhuba kuphela xa CSR_CTL[0]=1 & CSR_CTL[1]=1.

Isoftware iqwalasela iiparamitha zovavanyo, ezinje nge src, destaddress, csr_cfg, num lines, njalo njalo.
Isoftware yeCSR ibhala iCSR_CTL[2:0]= 0x3. I-AF iqala ukwenza uvavanyo.

Ukugqitywa kovavanyo:
- I-Hardware igqiba xa uvavanyo lugqiba okanye lubhaqa impazamo. Ekugqityweni, izixhobo ze-AF zihlaziya iDSM_STATUS. Ukhetho lwesoftware DSM_STATUS[31:0]==1 ukubona ukugqitywa kovavanyo.
- Isoftware inokunyanzelisa ukugqitywa kovavanyo ngokubhala iCSR ibhala CSR_CTL[2:0]=0x7. Uhlaziyo lweHardware AF DSM_STATUS.

Imbali yoHlaziyo yoXwebhu lweNative Loopback Accelerator Functional Unit (AFU) IsiKhokelo soMsebenzisi

Inguqulelo yoXwebhu	Intel Ukukhawulezisa Uguqulelo lweSitaki	Iinguqu
2019.08.05	2.0 (ixhaswa yi-Intel IQuartus Prime Pro Edition 18.1.2) kunye no-1.2 (ixhaswe nge Intel Quartus Prime Pro Edition 17.1.1)	Inkxaso eyongeziweyo ye-Intel FPGA PAC D5005 iqonga ekukhululweni kwangoku.
2018.12.04	1.2 (ixhaswa yi-Intel IQuartus® Prime Pro Edition 17.1.1)	Ukukhutshwa kwesondlo.
2018.08.06	1.1 (ixhaswa yi-Intel IQuartus Prime Pro Edition 17.1.1) kunye no-1.0 (ixhaswe nge Intel Quartus Prime Pro Edition 17.0.0)	Ihlaziywe indawo yekhowudi yemvelaphi ye-NLB sample AFU kwi I-NLB Sample Accelerator Function (AF) icandelo.
2018.04.11	1.0 (ixhaswa yi-Intel IQuartus Prime Pro Edition 17.0.0)	Ukukhutshwa kokuqala.

Amaxwebhu / Izibonelelo

Intel Native Loopback Accelerator Functional Unit (AFU) [pdf] Isikhokelo somsebenzisi
IYunithi eSebenzayo yeNative Loopback Accelerator AFU, iNative Loopback, iYunithi eSebenzayo yeAFU, iYunithi yokuSebenza iAFU

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