05-247r0 SAT: Add 16-byte CDBs and PIO modes 16 June 2005

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1 To: T10 Technicl Committee From: Robert Sheffield, ntel Dte: 16 June 2005 Subject: r0 SAT: Add 16-byte CDBs nd PO modes Revision history Revision 0 (16 June 2005) - First revision Relted documents SAT-r04 - SCS / ATA Trnsltion revision 4 Overview Reflector trffic prompted the SAT WG to discuss the need to define SAT trnsltions for block commnds using the 16-byte CDB formt, such s READ CAPACTY (16), nd others. The resoning is tht becuse SAT defines trnsltions involving ATA devices implementing the 48-bit Address feture set, n ATA device my be instlled with cpcity tht cnnot be fully ddressed using the 32-bit LBA field provided in the SCS 10 nd 12 byte CDB red/write type commnds. READ CAPACTY (16), for exmple, must be used to determine the cpcity of non-pcket device with cpcity greter thn 2 Tebibytes ccessed through SATL. This proposl is to dd text defining the trnsltions for the following SCS commnds: ) READ (16) 88h b) READ CAPACTY(16) 9Eh c) SYNCHRONZE CACHE (16) 91h d) VERFY (16) 8Fh e) WRTE (16) 8Ah f) WRTE AND VERFY (12) AEh g) WRTE AND VERFY (16) 8Eh These trnsltions my involve use of the following ATA non-pcket device commnds: ) FLSH CACHE b) FLSH CACHE EXT c) READ DMA d) READ DMA EXT e) READ DMA QEED f) READ DMA QEED EXT g) READ MLTPLE h) READ MLTPLE EXT i) READ SECTOR(S) j) READ SECTOR(S) EXT k) READ VERFY SECTOR(S) l) READ VERFY SECTOR(S) EXT m) WRTE DMA n) WRTE DMA EXT o) WRTE DMA FA EXT p) WRTE DMA QEED q) WRTE DMA QEED EXT r) WRTE DMA QEED FA EXT s) WRTE MLTPLE t) WRTE MLTPLE EXT u) WRTE MLTPLE FA EXT v) WRTE SECTOR(S) w) WRTE SECTOR(S) EXT x) READ FPDMA QEED (SATA e) y) WRTE FPDMA QEED (SATA e) This proposl lso dds text to set the generl rules for trnslting LBA nd trnsfer length for block storge red/write commnd trnsltions dded to n initil subcluse under the block commnds subcluse, nd pplies severl corrections, clrifictions, nd editoril chnges to text throughout the block commnds cluse. 1

2 Suggested Chnges: Add the following definitions ATA flush commnd:.a FLSH CACHE or FLSH CACHE EXT commnd defined in ATA/ATAP ATA red commnd: A non-pcket device block red type commnd which is one of the following: READ DMA, READ DMA EXT, READ DMA QEED, READ DMA QEED EXT, READ MLTPLE, READ MLTPLE EXT, READ SECTOR(S), or READ SECTOR(S) EXT defined in ATA/ATAP-7; or READ FPDMA QEED defined in SATA e ATA verify commnd:.a READ VERFY SECTOR(S) or READ VERFY SECTOR(S) EXT commnd defined in ATA/ATAP ATA write commnd: A non-pcket device block write type commnd which is one of the following: WRTE DMA, WRTE DMA EXT, WRTE DMA FA EXT, WRTE DMA QEED, WRTE DMA QEED EXT, WRTE DMA QEED FA EXT, WRTE MLTPLE, WRTE MLTPLE EXT, WRTE MLTPLE FA EXT, WRTE SECTOR(S), or WRTE SECTOR(S) EXT defined in ATA/ATAP-7; or WRTE FPDMA QEED defined in SATA e ATA write FA commnd sequence:.a sequence of commnds tht writes logicl blocks to n ttched non-pcket device in wy tht forces medi ccess nd consists of one of the following: ) WRTE DMA, WRTE DMA QEED, WRTE FPDMA QEED, WRTE MLTPLE, or WRTE SECTOR(S) commnd followed by READ VERFY SECTOR(S) commnd defined in ATA/ATAP-7; b) WRTE DMA FA EXT, WRTE DMA QEED FA EXT, or WRTE MLTPLE FA EXT commnd defined in ATA/ATAP-7, or c) WRTE FPDMA QEED commnd defined in SATA e with the FA bit in the Device/Hed field set to one SCS red commnd: A SCS READ (6), READ (10), READ (12), or READ (16) commnd defined in SBC SCS synchronize cche commnd:.a SCS SYNCHRONZE CACHE(10), or SYNCHRONZE CACHE (16) commnd defined in SBC SCS verify commnd:.a SCS VERFY (10), VERFY (12), or VERFY (16) commnd defined in SBC SCS write commnd:.a SCS WRTE (6), WRTE (10), WRTE (12), or WRTE (16) commnd defined in SBC SCS write nd verify commnd:.a SCS WRTE AND VERFY (10), WRTE AND VERFY(12), or WRTE AND VERFY (16) commnd defined in SBC-2. Add subcluse 9.1 under cluse 9 SCS Block Commnds (SBC-2) Mpping s shown below 9.1 Trnslting LBA nd trnsfer length nd ATA commnd use constrints ATA commnds the SATL my use to implement the functions specified by SCS block commnds depend upon: ) the vlue of the LOGCAL BLOCK ADDRESS nd TRANSFER LENGTH fields specified in the SCS CDB, nd b) the cpbilities of the ttched ATA device nd the ATA host within the SATL. 2

3 Tble 1 identifies constrints in selecting ATA commnds to implement SCS block storge commnds. ATA commnds the SATL my use Tble 1 Red nd write type commnd trnsltion constrints SCS CDB Prerequisites ATA feture sets supported nd enbled 48-bit Address b DMA c Overlp d SATA e NCQ FLSH CACHE no no no no no READ MLTPLE, READ SECTOR(S), READ VERFY SECTOR(S), WRTE MLTPLE, WRTE SECTOR(S) yes be no no no no READ DMA, WRTE DMA yes be no yes no no READ DMA QEED, WRTE DMA QEED READ DMA EXT, WRTE DMA EXT, WRTE DMA FA EXT READ DMA QEED EXT, WRTE DMA QEED EXT, WRTE DMA QEED FA EXT FLSH CACHE EXT, READ MLTPLE EXT, READ SECTOR(S) EXT, READ VERFY SECTOR(S) EXT, WRTE MLTPLE EXT, WRTE MLTPLE FA EXT, WRTE SECTOR(S) EXT READ FPDMA QEED, WRTE FPDMA QEED b c d e ( + LBA) 2 28 TRANSFER LENGTH yes be no yes yes no no yes yes no no no yes yes yes no no yes no no no no no no no yes An ATA commnd my be used to implement SCS block commnd only if ll the prerequisites in the prerequisite columns for tht commnd mrked yes re stisfied. The SATL should not receive request to ccess n LBA beyond if the ttched non-pcket device does not support the 48-bit Address feture set or NCQ (see SATA e) (i.e., becuse the SATL reports cpcity less thn 2 28 ). The DMA prerequisite requires both the SATA host in the SATL nd the ttched non-pcket device to support the DMA cpbility (i.e. bit 8 of word 49 in the DENTFY DEVCE dt is set to one nd t lest one DMA mode is enbled in dword 63 or dword 88 of the DENTFY DEVCE dt). See ATA/ATAP-7 nd SATA e. The SATL my trnsfer the number of bytes requested in the TRANSFER LENGTH field by sending multiple ATA commnds, ech time incrementing the LBA in the ATA commnd by the Sector Count trnsferred. The SATL my use ATA commnds listed in tble 1 in the trnsltion of SCS red (see...), SCS write (see...), SCS write nd verify (see...), SCS verify (see...), nd SCS synchronize cche (see...) commnds if the prerequisites defined for the commnd s shown in tble 1 re stisfied. The trnsltions for specific SCS block commnds in this cluse further constrin the use of the vilble ATA commnds in implementing the trnsltion. f the logicl block ddress plus the trnsfer length specified in the SCS CDB is greter thn FFFFFFFh nd the ttched non-pcket device does not support the 48-bit Address feture set, the SATL shll terminte the 3

4 commnd with CHECK CONDTON sttus with the sense key set to LLEGAL REQEST nd the dditionl sense code set to LOGCAL BLOCK ADDRESS OT OF RANGE (see SBC-2). For SCS red (see 3.1.6), SCS verify (see 3.1.8), SCS write (see 3.1.9), nd SCS write nd verify (see ) commnds received with 6-byte CDBs, if the TRANSFER LENGTH or VERFCATON LENGTH field is zero, the SATL shll issue ATA commnds specifying Sector Count to operte on 256 logicl sectors. f the CDB is 10, 12, or 16 bytes or if the trnsfer count on 6-byte CDB is non-zero, the SATL shll trnsfer or operte on the number of logicl sectors specified. Modify subcluse 9.1 FORMAT NT commnd s shown below 9.2 FORMAT NT commnd (4h) Commnd summry The FORMAT NT commnd verifies tht ll logicl block ddresses visible vilble to externl SCS ppliction clients re formtted nd my be ccessed. All sectors of the visible ddress spce re written to zero. Field OPERATON CODE DEFECT LST FORMAT CMPLST FMTDATA Tble 2 FORMAT NT commnd CDB fields E E E f no defect list heder is provided or defect list heder is provided with the DCRT bit set to one the SATL shll return completion sttus without issuing ny commnds to the device with sttus of GOOD. f the SATL supports certifiction of medi nd defect list heder is provided with the DCRT bit set to zero the SATL shll certify the medi s described in f the DEFECT LST FORMAT field is the mndtory formt (000b) or the vendor specific formt (110b) the defect list length shll be zero (see SBC-2). f the DEFECT LST FORMAT field is ny other vlue the SATL shll terminte the commnd with CHECK CONDTON sttus with the sense key set to LLEGAL REQEST nd the dditionl sense code set to NVALD FELD N PARAMETER LST. f CMPLST is specified the SATL shll terminte the commnd with CHECK CONDTON with sense key set to LLEGAL REQEST nd dditionl sense code set to NVALD FELD N CDB. f set to 0 no dt shll be trnsferred from the dt-out buffer. f set to 1 the FORMAT NT prmeter list shll be trnsferred from the client's dt out buffer. The SATL my ccept FORMAT NT prmeter list specifying the MMED bit nd n initiliztion pttern. The SATL shll ignore ny defect list descriptors nd ny other fields provided in the FORMAT NT prmeter list (see 9.2.2). LONGLST The SATL my implement this field s defined in SBC-2. FMTPNFO The SATL my implement this field s defined in SBC-2. The SATL shll process commnds received during the processing of the FORMAT NT commnd s specified in SBC-2. 4

5 9.2.2 FORMAT NT prmeter list f the FORMAT commnd CDB specifies FMTDATA bit of one, the SATL shll ccept FORMAT NT prmeter list consisting of short or long defect list heder nd my ccept n initiliztion pttern descriptor. The SATL shll ignore ny defect descriptors provided. Tble 3 defines the SATL hndling of fields in the FORMAT NT defect list heder. Field Tble 3 SATL defect list heder FOV E/ The SATL shll implement this field s defined in SBC-2. DPRY E The SATL shll ignore this field. DCRT E (see 9.2.3) STPF The SATL my implement this field s defined in SBC-2. P The SATL my implement this field s defined in SBC-2. f supported, the SATL shll write the specified pttern by issuing WRTE SECTOR(S) or WRTE SECTOR(S) EXT ATA write commnds (see nd 9.1) to the ttched non-pcket device. MMED E The SATL shll implement this field s defined in SBC-2. DEFECT LST LENGTH E The SATL shll ignore ny defect descriptors provided. f MMED is one or if FOV is zero or if FOV is one, DCRT is one, nd P is zero, then the SATL my complete the FORMAT NT commnd immeditely with SCCESSFL sttus. f MMED is zero, FOV is one, nd either DCRT is zero or P is one, the SATL my terminte the commnd with CHECK CONDTON sttus with the sense key set to LLEGAL REQEST with the dditionl sense code set to NVALD FELD PARAMETER LST. Otherwise, the SATL shll issue the required ATA red nd ATA write commnds to certify nd initilize the medi s specified by DCRT nd P, nd shll then return SCCESSFL sttus if no unrecoverble write errors re encountered DCRT bit f vlue of zero is specified nd supported the SATL shll issue READ VERFY SECTOR(S) or READ VERFY SECTOR(S) EXT ATA verify commnds (see 3.1.3) to ccess every block on the medi. f ny unrecoverble red errors re encountered the SATL shll issue n WRTE SECTOR(S) or WRTE SECTOR(S) EXT ATA write commnd (see 3.1.4) to the defective sector to force cuse lloction of n lternte. The dt written shll be vendor-specific or the dt pttern specified by the initiliztion pttern descriptor if one is provided. After writing the block, the SATL shll gin issue n READ VERFY SECTOR(S) or READ VERFY SECTOR(S) EXT ATA verify commnd (see 3.1.3) to the sme sector to verify the lternte block is not defective. The process (i.e., verify, write, verify, write,...) shll repet until the logicl block is verified successfully or the disk reports ftl error other thn n unrecoverble red error (e.g., device fult). Editor s Note 1: Could dd sttement here bout the response if ftl error is detected - or perhps reference to the pproprite generl error hndling subcluse. 5

6 Modify subcluse 9.2 READ (6) commnd s shown below 9.3 READ (6) commnd (8h) Commnd summry The READ(6) commnd is used to request the device to trnsfer logicl blocks of user dt to the requester. Different versions of the commnd support different LBA sizes nd different trnsfer lengths. Dt my be red from medium or, dt my be red from the device cche if the most recent copy is in the cche nd hs not been trnsferred to the medium (see SBC-2) Tble 4 READ(6) commnd CDB fields Field OPERATON CODE LOGCAL BLOCK ADDRESS (see 9.3.3)9.3.2 TRANSFER LENGTH The trnsfer length shll be used to set the ATA sector count (see 9.3.4) A trnsfer length of zero specifies to trnsfer 256 logicl blocks from the ttched non-pcket device to the ppliction client (see SBC-2) READ opertion code trnsltions Tble 5 shows the trnsltion for SCS READ commnds to ATA or SATA e commnds bsed on the cpbilities of the ttched non-pcket device. This subcluse pplies to the trnsltion of SCS READ(6), READ(10), nd READ(12). Tble 5 READ commnd summry Trnslted to ATA or SATA e red commnds using the following criterion b c d e s Queuing enbled? Are ATA Extended Commnds Enbled No No READ DMA Trnslted ATA Opcode b No Yes READ DMA EXT c Yes No READ DMA QEED Yes Yes READ DMA QEED EXT d Yes Yes or No READ FPDMA QEED (See SATA e) e Refers to either the non-pcket device support of the ATA/ATAP-7 Overlpped feture set or the Ntive Commnd Queing (NCQ) feture of SATA e. The SATL my ttempt READ MLTPLE, READ MLTPLE EXT, READ SECTOR(S) or READ SECTOR(S) EXT s retry opertion if the specified ATA or SATA e commnd fils. The selected ATA commnds shll hve enough bits in the logicl sector ddress to void trunction of the LBA supplied in the SCS CDB. The SATL my substitute READ DMA if the LBAs ccessed cn be represented in 28 bits. The SATL my substitute READ DMA QEED if the LBAs ccessed cn be represented in 28 bits. The SATL my use these commnds only if NCQ is enbled (see SATA e). 6

7 This subcluse pplies to the trnsltion of SCS READ(6), READ(10), READ(12), nd READ(16) commnds. The SATL shll issue ATA red commnds (see 3.1.2) in ccordnce with the constrints specified in subcluse 9.1 to cuse the non-pcket device to trnsfer the logicl blocks specified in the SCS red commnd (see 3.1.6) to the ATA host in the SATL. The SATL shll trnsfer the The requested sector(s) shll be returned to the SCS ppliction client if successfully retrieved from the non-pcket device. f the LBA plus the trnsfer length minus 1 is greter thn the mximum highest numbered sector tht cn be ddressed in medium on the non-pcket device the SATL device server shll return terminte the commnd with CHECK CONDTON sttus with the sense key set to LLEGAL REQEST nd the dditionl sense code set to LOGCAL BLOCK ADDRESS OT OF RANGE (see SBC-2). The SATL device server my trnsfer vendor-specific mount of dt before terminting the commnd LOGCAL BLOCK ADDRESS field The SATL shll trnsfer dt blocks strting with the LBA specified TRANSFER LENGTH field f the TRANSFER LENGTH field is zero, the SATL shll trnsfer 256 dt blocks. f the TRANSFER LENGTH is not zero, the SATL shll trnsfer the specified number of sectors from the device to the ppliction client. Modify subcluse 9.3 READ (10) commnd s shown below 9.4 READ (10) commnd (28h) Commnd summry The SATL shll process the READ(10) commnd the sme s the READ(6) commnd (see 9.3.2). with the dditionl fields in the CDB implemented s described in the following prgrphs tble 6 nd subcluse Tble 6 READ(10) commnd CDB fields Field OPERATON CODE (see 9.4.2) RDPROTECT See SBC-2 DPO (disble pge out) gnored FA (force unit ccess) E (see 9.4.2) FA_NV (force unit ccess nonvoltile cche) The SATL shll not implement FA_NV bit. LOGCAL BLOCK ADDRESS (see 9.3.3)(see 9.3.2) GROP NMBER The SATL my implement this field s defined in SBC-2. TRANSFER LENGTH /E The trnsfer length shll be used to set the ATA sector count (see 9.4.3)(see 9.3.2). The SATL shll issue s mny ATA commnds s needed to stisfy the trnsfer length specified by the READ (10) commnd. A trnsfer length of 0 indictes tht dt trnsfer shll not tke plce. f the trnsfer length is not zero, the SATL shll trnsfer the number of sectors specified from the device to the ppliction client. 7

8 9.4.2 READ(10,12) READ (10), READ (12) nd READ (16) OPERATON CODE nd FA The SATL my support FA. f the SATL does not support FA nd FA is set to one, the SATL shll terminte the commnd with CHECK CONDTON sttus with the sense key set to LLEGAL REQEST nd the dditionl sense code set to NVALD FELD N CDB. f FA is set to one nd the ttched device supports NCQ the SATL shll issue SATA e READ FPDMA QEED commnd with the FA bit in the Device/Hed field set to one. f FA is set to one nd the ttched device does not support NCQ, the SATL shll issue n ATA READ VERFY or READ VERFY EXT commnd followed by n ATA red commnd s specified in subcluse f FA is zero the SATL shll issue red commnd s specified in subcluse TRANSFER LENGTH field f the TRANSFER LENGTH field is zero, the SATL shll not trnsfer ny dt blocks to the ppliction client. f the TRANSFER LENGTH is not zero, the SATL shll trnsfer the specified number of sectors from the device to the ppliction client. Modify subcluse 9.4 READ (12) commnd s shown below 9.5 READ (12) commnd (A8h) Commnd summry The READ(12) commnd is used to request the device to trnsfer logicl blocks of user dt to the requester. Different versions of the commnd support different LBA sizes nd different trnsfer lengths. Dt my be red from medium or, dt my be red from the device cche if the most recent copy is in the cche nd hs not been trnsferred to the medium (see SBC-2) TRANSFER LENGTH field Tble 7 READ(12) commnd CDB fields Field OPERATON CODE (see 9.4.2) RDPROTECT See SBC-2 DPO (disble pge out) gnored FA (force unit ccess) FA_NV (force unit ccess nonvoltile cche) E The SATL shll implement FA if the ttched device supports NCQ. (see 9.4.2) The SATL shll not implement FA_NV bit. LOGCAL BLOCK ADDRESS (see 9.3.3)(see 9.3.2) GROP NMBER The SATL my implement this field s defined in SBC-2. TRANSFER LENGTH /E The trnsfer length shll be used to set the ATA sector count (see 9.4.3)(see 9.3.2). The SATL shll issue s mny ATA commnds s needed to stisfy the trnsfer length specified by the READ (12) commnd. A trnsfer length of 0 indictes tht dt trnsfer shll not tke plce. f the trnsfer length is not zero, the SATL shll trnsfer the number of sectors specified from the device to the ppliction client. The SATL shll trnsfer the number of sectors specified in the TRANSFER LENGTH field to the ppliction client. f the TRANSFER LENGTH field is greter thn 0xFFFF the SATL device server shll terminte the commnd with CHECK CONDTON sttus with the sense key set to LLEGAL REQEST nd the dditionl sense code set to NVALD FELD N CDB. 8

9 NOTE 1 - This is becuse the ATA commnd set supports mximum of 16-bit SECTOR CONT field. 9

10 Add subcluse 9.6 READ (16) commnd s shown below 9.6 READ (16) commnd (88h) Commnd summry The READ (16) commnd is used to request the device to trnsfer logicl blocks of user dt to the requester. Different versions of the commnd support different LBA sizes nd different trnsfer lengths. Dt my be red from medium or, dt my be red from the device cche if the most recent copy is in the cche nd hs not been trnsferred to the medium (see SBC-2) Tble 8 READ(16) commnd CDB fields Field OPERATON CODE (see 9.4.2) RDPROTECT See SBC-2 DPO (disble pge out) gnored FA (force unit ccess) E (see 9.4.2) FA_NV (force unit ccess nonvoltile cche) LOGCAL BLOCK ADDRESS (see 9.3.2) The SATL shll not implement FA_NV bit. GROP NMBER The SATL my implement this field s defined in SBC-2. TRANSFER LENGTH /E The trnsfer length shll be used to set the ATA sector count (see 9.3.2). The SATL shll issue s mny ATA commnds s needed to stisfy the trnsfer length specified by the READ (12) commnd. A trnsfer length of 0 indictes tht dt trnsfer shll not tke plce. f the trnsfer length is not zero, the SATL shll trnsfer the number of sectors specified from the device to the ppliction client. 10

11 Add subcluse 9.8 READ CAPACTY (16) commnd s shown below 9.8 READ CAPACTY (16) commnd (9Eh) Commnd summry The READ CAPACTY (16) commnd shll request informtion bout the cpcity of the block device being ddressed. Tble 9 READ CAPACTY(16) commnd CDB fields Field OPERATON CODE LOGCAL BLOCK ADDRESS PM (prtil medium indictor) E se ATA DENTFY DEVCE informtion t power-on or link initiliztion to compute the mximum user ddressble medium cpcity. A SATL my use prt of the cpcity of the ttched non-pcket device to store persistent stte informtion for mngement of the emulted SCS trget device. The LOGCAL BLOCK ADDRESS field works in conjunction with the PM bit described below. Since this requires vendor specific informtion, this opertion shll not be supported nd shll be set to zero. f the LOGCAL BLOCK ADDRESS is not h the SATL device server shll terminte the commnd with CHECK CONDTON STATS with the sense key set to LLEGAL REQEST nd the dditionl sense code set to NVALD FELD N CDB. The opertion specified by this bit shll be ignored. The SATL shll return dt for the LBA following the LBA specified in logicl block ddress. f the PM is not zero the SATL device server shll terminte the commnd with CHECK CONDTON STATS with the sense key set to LLEGAL REQEST nd the dditionl sense code set to NVALD FELD N CDB READ CAPACTY dt The SATL shll return READ CAPACTY dt s defined by SBC-2. Tble 10 READ CAPACTY dt Field RETRNED LOGCAL BLOCK ADDRESS BLOCK LENGTH N BYTES The SATL shll return vlue no lrger thn one less thn the vlue from the ATA DENTFY DEVCE dt TOTALSERSECTORS field (words 60/61) retrieved from the device. The SATL my report less thn the ddressble medium cpcity reported in the ATA DENTFY DEVCE informtion.the bytes shll be swpped to mtch SCS big-endin formt. This vlue should be set to 512 bytes. The SATL my operte in vendor-specific mnner with non-pcket device tht reports logicl sector size greter thn 256 words in DENTFY DEVCE words (see ATA/ATAP-7) RTO_EN See SBC-2 PROT_EN See SBC-2 11

12 Modify subcluse 9.8 SYNCHRONZE CACHE (10) commnd s shown below 9.11 SYNCHRONZE CACHE (10) commnd (35h) Commnd summry The SYNCHRONZE CACHE(10) commnd is used to flush the most recent dt vlues in the device cche to physicl medium. nlike in SCS, ATA does not provide wy to specify prticulr LBA to strt flushing the device cche. Field OPERATON CODE SYNC_NV Tble 11 SYNCHRONZE CACHE(10) commnd CDB fields MMED The SATL shll ignore this bit. LOGCAL BLOCK ADDRESS Trnslted into the FLSH CACHE commnd (E7h) or FLSH CACHE EXT commnd (EAh). The SATL shll issue n ATA flush commnd (see 3.1.1) in ccordnce with the constrints described in 9.1 The SATL shll ignore this field nd shll process this commnd s though this field contined vlue of zero. GROP NMBER The SATL my implement this field s defined in SBC-2. NMBER OF BLOCKS The SATL shll ignore this field nd shll process this commnd s though this field contined vlue of zero (i.e., synchronize ll logicl blocks strting with the one specified in the LOGCAL BLOCK ADDRESS field to the lst logicl block on the medium). Editor s Note 2: There is proposl being developed tht will describe generl rules for selecting mong ATA 24-bit commnds, ATA 48-bit commnds, nd SATA- FPDMA commnds depending on the CDB received nd the cpbilities of the ttched device. This proposl will cover selection of ATA/SATA commnds involved in emultion of SYNCHRONZE CACHE. 12

13 Add subcluse 9.12 SYNCHRONZE CACHE (16) commnd s shown below 9.12 SYNCHRONZE CACHE (16) commnd (91h) Commnd summry Editor s Note 3: Here we hve bit of conundrum. The FLSH CACHE (EXT) commnd(s) lwys flush the entire cche - so the LBA in the SYNCHONZE CACHE (10/16) commnd is meningless to the SATL. The FLSH CACHE EXT commnd differs from the FLSH CACHE commnd only in tht the EXT version cn report lrger LBA (up to 48 bits) in cse of medi error during execution of the commnd. SBC-2 defines how to report the LBA of medi error (in the NFORMATON field of sense dt), however this cpbility is only defined for unrecovered red errors, not for write errors. There is no expecttion tht block-storge device (e.g., SATL) would ever return n unrecovered LBA in the sense dt for SYNCHRONZE CACHE commnd. One could rgue, therefore, tht there is never reson for SATL to issue the FLSH CACHE EXT commnd. SYNCHRONZE CACHE (16) is supported becuse SCS ppliction clients might expect it. This subcluse llows either FLSH CACHE or FLSH CACHE EXT to be issued if the ttched ATA device supports the 48-bit Address feture. The SYNCHRONZE CACHE(16) commnd is used to flush the most recent dt vlues in the device cche to physicl medium. nlike in SCS, ATA does not provide wy to specify prticulr LBA to strt flushing the device cche. Field OPERATON CODE SYNC_NV Tble 12 SYNCHRONZE CACHE(10) commnd CDB fields MMED The SATL shll ignore this bit. LOGCAL BLOCK ADDRESS The SATL shll issue n ATA flush commnd (see 3.1.1) in ccordnce with the constrints described in 9.1 The SATL shll ignore this field nd shll process this commnd s though this field contined vlue of zero. GROP NMBER The SATL my implement this field s defined in SBC-2. NMBER OF BLOCKS The SATL shll ignore this field nd shll process this commnd s though this field contined vlue of zero (i.e., synchronize ll logicl blocks strting with the one specified in the LOGCAL BLOCK ADDRESS field to the lst logicl block on the medium). Remove subcluse 9.9 VERFY (6) commnd (not defined in SBC-2) 9.9 VERFY (6) commnd (13h) The VERFY(6) commnd is not defined for direct-ttch storge devices (disk). The SATL shll terminte the commnd with CHECK CONDTON STATS with the sense key set to NVALD REQEST nd the dditionl sense code set to NVALD COMMAND OPERATON CODE. 13

14 Modify subcluse 9.8 VERFY (10) commnd s shown below 9.14 VERFY (10) commnd (2Fh) Commnd summry The VERFY(10) commnd is used to verify dt on medium which includes user dt nd protection dt. This SCS commnd is directly trnslted into ATA red verify sectors commnd or the extended version of tht commnd. Tble 13 VERFY(10) commnd CDB fields Field OPERATON CODE VRPROTECT See SBC-2 DPO gnored BYTCHK LOGCAL BLOCK ADDRESS The SATL shll issue n ATA READ VERFY SECTOR(S) verify commnd (see 3.1.3) in ccordnce with the constrints described in 9.1, or if the device supports 48 bit mode, the SATL shll issue n ATA READ VERFY EXTENDED commnd. f the ppliction client specifies vlue of one other thn zero in this field, the SATL device server shll terminte the commnd with CHECK CONDTON STATS with the sense key set to LLEGAL REQEST nd the dditionl sense code set to NVALD FELD N CDB. (see 9.1) f the LOGCAL BLOCK ADDRESS is lrger thn wht cn be ccommodted using 28 bits nd the device does not support 48-bit mode, the SATL shll return CHECK CONDTON with sense key set to LLEGAL REQEST nd dditionl sense code set to LOGCAL BLOCK ADDRESS OT OF RANGE. GROP NMBER The SATL my implement this field s defined in SBC-2. VERFCATON LENGTH The verifiction length shll be used to set the ATA sector count (see 9.1) Miscellneous notes The SATL LBA mpping lgorithm shll ssign the LSB of the LBA field from the SCS CDB, i.e. byte 5, to LBALOW in the ATA FS, byte 4 from SCS CDB to LBAMid, byte 3 from SCS CDB to LBAHigh. f the device supports 48-bit ddressing byte 2 of the SCS CDB shll be ssigned to LBALowExp. The SECTORCONT in the ATA FS shll be derived from the LSB, i.e. byte 8, of the VERFCATON LENGTH of the SCS CDB. f the device supports 48-bit ddressing, the SECTORCONTEXP is ssigned byte 7 of the SCS CDB, which is the MSB of the VERFCATON LENGTH field. Commnds the SATL issues to the non-pcket device to process this commnd shll not be queued. NOTE 2 - A performnce degrdtion my be expected when commnd such s VERFY is issued s it must run in single thred. 14

15 Modify subcluse 9.9 VERFY (12) commnd s shown below 9.15 VERFY (12) commnd (AFh) The VERFY(12) commnd is not defined for SAT. The SATL shll terminte the commnd with CHECK CONDTON STATS with the sense key set to NVALD REQEST nd the dditionl sense code set to NVALD COMMAND OPERATON CODE Commnd summry The VERFY(12) commnd is used to verify dt on medium which includes user dt nd protection dt. This SCS commnd is directly trnslted into ATA red verify sectors commnd or the extended version of tht commnd. Tble 14 VERFY(12) commnd CDB fields Field OPERATON CODE VRPROTECT See SBC-2 DPO gnored BYTCHK LOGCAL BLOCK ADDRESS (see 9.1) The SATL shll issue n ATA verify commnd (see 3.1.3) in ccordnce with the constrints described in 9.1. f the ppliction client specifies vlue other thn zero in this field, the SATL device server shll terminte the commnd with CHECK CONDTON sttus with the sense key set to LLEGAL REQEST nd the dditionl sense code set to NVALD FELD N CDB. GROP NMBER The SATL my implement this field s defined in SBC-2. VERFCATON LENGTH The verifiction length shll be used to set the ATA sector count (see 9.1). 15

16 Add subcluse 9.16 VERFY (16) commnd s shown below 9.16 VERFY (16) commnd (AFh) Commnd summry The VERFY(16) commnd is used to verify dt on medium which includes user dt nd protection dt. This SCS commnd is directly trnslted into ATA red verify sectors commnd or the extended version of tht commnd. Tble 15 VERFY(16) commnd CDB fields Field OPERATON CODE VRPROTECT See SBC-2 DPO gnored BYTCHK LOGCAL BLOCK ADDRESS (see 9.1) The SATL shll issue n ATA verify commnd (see 3.1.3) in ccordnce with the constrints described in 9.1. f the ppliction client specifies vlue other thn zero in this field, the SATL device server shll terminte the commnd with CHECK CONDTON sttus with the sense key set to LLEGAL REQEST nd the dditionl sense code set to NVALD FELD N CDB. GROP NMBER The SATL my implement this field s defined in SBC-2. VERFCATON LENGTH The verifiction length shll be used to set the ATA sector count (see 9.1). 16

17 Modify subcluse 9.12 WRTE (6) commnd s shown below 9.17 WRTE (6) commnd (0Ah) Commnd summry The WRTE(6) commnd is used to request the device to trnsfer user dt to device medium or cche. Different versions of the commnd support different LBA sizes nd or different trnsfer lengths. Dt my be written to medium or the device cche. Tble 16 WRTE(6) commnd CDB fields Field OPERATON CODE See TRANSFER LENGTH The trnsfer length shll be used to set the ATA sector count. LOGCAL BLOCK ADDRESS CONTROL See 6.4 For WRTE(6) commnds (0Ah), 21 bit LBA shll be derived from bytes 3, 2, 1:5 in the CDB, with byte 3 being the LSB nd the 5 bits from byte 1 being the MSB. See A trnsfer length of zero specifies to trnsfer 256 logicl blocks from the ppliction client to the ttched non-pcket device (see SBC-2). 17

18 WRTE commnd OPERATON CODE trnsltion Tble 17 shows the trnsltion for SCS WRTE(6), WRTE(10), nd WRTE(12) commnds to ATA or SATA e commnds bsed on the cpbilities of the ttched non-pcket device. Tble 17 Write commnd summry Trnslted to ATA or SATA e write commnds using the following criterion s Queueing enbled? b c d e Are ATA Extended Commnds enbled FA No No N WRTE DMA Trnslted ATA commnd(s) b No No Y WRTE DMA, READ VERFY SECTORS No Yes N WRTE DMA EXT c No Yes Y WRTE DMA FA EXT Yes No N WRTE DMA QEED Yes No Y WRTE DMA QEED, READ VERFY SECTORS Yes Yes N WRTE DMA QEED EXT d Yes Yes Y WRTE DMA QEED FA EXT Yes Yes or No Y or N WRTE FPDMA QEED (see SATA e) e Refers to either the non-pcket device support of the ATA/ATAP-7 Overlpped feture set or the Ntive Commnd Queing (NCQ) feture of SATA e. The SATL my ttempt WRTE MLTPLE, WRTE MLTPLE EXT, WRTE SECTOR(S) or WRTE SECTOR(S) EXT s retry opertion if the specified ATA or SATA e commnd fils. The selected ATA commnds shll hve enough bits in the logicl sector ddress to void trunction of the LBA supplied in the SCS CDB. The SATL my substitute WRTE DMA if the LBAs ccessed cn be represented in 28 bits. The SATL my substitute WRTE DMA QEED if the LBAs ccessed cn be represented in 28 bits. The SATL my use these commnds only if NCQ is enbled (see SATA e). This subcluse pplies to the trnsltion of SCS WRTE (6), WRTE (10), WRTE (12), nd WRTE (16). The SATL shll trnsfer the logicl blocks specified in the SCS write commnd (see 3.1.9) from the SCS ppliction client nd shll issue ATA write commnds (see 3.1.4) in ccordnce with the constrints specified in subcluse 9.1 to trnsfer the specified logicl blocks through the ATA host in the SATL to the non-pcket device. Dt blocks specified in the LOGCAL BLOCK ADDRESS field shll be trnsferred to the specified non-pcket device, nd the device my trnsfer the dt to its cche or medium. CHECK CONDTON shll be reported bck if f the LOGCAL BLOCK ADDRESS or the LOGCAL BLOCK ADDRESS plus one less thn the TRANSFER LENGTH is greter thn the mximum sector tht cn be ddressed in medium the SATL shll terminte the commnd with CHECK CONDTON sttus where with the sense key set to LLEGAL REQEST nd dditionl sense code set to NVALD FELD N CDB. 18

19 Modify subcluse 9.13 WRTE (10) commnd s shown below 9.18 WRTE (10) commnd (2Ah) Commnd summry The WRTE(10) commnd is used to request the device to trnsfer user dt to device medium or cche. Different versions of the commnd support different LBA sizes nd or different trnsfer lengths. Dt my be written to medium or the device cche. Tble 18 WRTE(10) commnd CDB fields Field OPERATON CODE See See WRPROTECT See SBC-2 DPO (disble pge out) gnored FA (force unit ccess) /E See See FA_NV (force unit ccess nonvoltile cche) LOGCAL BLOCK ADDRESS The SATL shll not implement FA_NV bit WRTE commnd OPERATON CODE nd FA trnsltion See A 32 bit LBA shll be derived from bytes 2 through 5, where byte 5 is the LSB nd byte 2 is the MSB. GROP NMBER The SATL my implement this field s defined in SBC-2. TRANSFER LENGTH The trnsfer length shll be used to set the ATA sector count. The SATL shll issue s mny ATA commnds s needed to stisfy the trnsfer length specified by the WRTE (10) commnd. (see ) (see ) A trnsfer length of zero indictes tht dt trnsfer shll not tke plce. f the trnsfer length is not zero, the SATL shll trnsfer the number of sectors specified from the device to the ppliction client. This subcluse pplies to the trnsltion of SCS WRTE (10), WRTE (12), nd WRTE (16). f the FA field is zero the SATL shll process this commnd s described in f the FA bit is one the SATL shll issue n ATA write FA commnd sequence (see 3.1.5) to the ttched non-pcket device in ccordnce with the constrints described in subcluse

20 Modify subcluse 9.14 WRTE (12) commnd s shown below 9.19 WRTE (12) commnd (AAh) Commnd summry The WRTE(12) commnd is used to request the device to trnsfer user dt to device medium or cche. Different versions of the commnd support different LBA sizes nd or different trnsfer lengths. Dt my be written to medium or the device cche. Tble 19 WRTE(12) commnd CDB fields Field OPERATON CODE See See WRPROTECT See SBC-2 DPO (disble pge out) gnored FA (force unit ccess) /E See See FA_NV (force unit ccess nonvoltile cche) LOGCAL BLOCK ADDRESS The SATL shll not implement FA_NV bit. See A 32 bit LBA shll be derived from bytes 2 through 5, where byte 5 is the LSB nd byte 2 is the MSB. GROP NMBER The SATL my implement this field s defined in SBC-2. TRANSFER LENGTH The trnsfer length shll be used to set the ATA sector count. The SATL shll issue s mny ATA commnds s needed to stisfy the trnsfer length specified by the WRTE (12) commnd. (see ) (see ) A trnsfer length of zero indictes tht dt trnsfer shll not tke plce. f the trnsfer length is not zero, the SATL shll trnsfer the number of sectors specified from the device to the ppliction client. 20

21 Add subcluse 9.20 WRTE (16) commnd s shown below 9.20 WRTE (16) commnd (8Ah) Commnd summry The WRTE(16) commnd is used to request the device to trnsfer user dt to device medium or cche. Different versions of the commnd support different LBA sizes nd or different trnsfer lengths. Dt my be written to medium or the device cche. Tble 20 WRTE(16) commnd CDB fields Field OPERATON CODE See WRPROTECT See SBC-2 DPO (disble pge out) gnored FA (force unit ccess) /E See FA_NV (force unit ccess nonvoltile cche) LOGCAL BLOCK ADDRESS See The SATL shll not implement FA_NV bit. GROP NMBER The SATL my implement this field s defined in SBC-2. TRANSFER LENGTH The trnsfer length shll be used to set the ATA sector count. (see ) A trnsfer length of zero indictes tht dt trnsfer shll not tke plce. f the trnsfer length is not zero, the SATL shll trnsfer the number of sectors specified from the device to the ppliction client. 21

22 Modify subcluse 9.15 WRTE AND VERFY (10) commnd s shown below 9.21 WRTE AND VERFY(10) commnd (2Eh) Commnd Summry The WRTE AND VERFY(10) commnd is used to trnsfer ppliction dt to medium nd then to verify tht dt ws written correctly. Tble 21 WRTE AND VERFY(10) commnd CDB fields Field OPERATON CODE WRPROTECT See SBC-2 DPO (disble pge out) gnored BYTCHK LOGCAL BLOCK ADDRESS E See The SATL shll issue n ATA write commnd, nd then issue red verify sector(s) commnd to the sme rnge of sectors. The WRTE portion of the commnd trnsltion shll be s specified for the WRTE(10) commnd (see 9.18). 40h for red verify sector commnd if the device does not support extended commnds feture set. 42h for READ VERFY EXTENDED commnd if the device supports the extended commnds feture set. gnored. The SATL shll ssume vlue of zero (i.e., no byte-by-byte comprison is performed). See The SATL shll trnslte the LBA s specified for the WRTE(10) commnd (see 9.18). GROP NMBER The SATL my implement this field s defined in SBC-2. TRANSFER LENGTH The trnsfer length shll be used to set the ATA sector count (see ). A trnsfer length of zero indictes tht dt trnsfer shll not tke plce. f the trnsfer length is not zero, the SATL shll trnsfer the number of sectors specified from the device to the ppliction client WRTE AND VERFY commnd OPERATON CODE nd FA trnsltion This subcluse pplies to the trnsltion of SCS WRTE AND VERFY (10), WRTE WRTE AND VERFY (12), nd WRTE WRTE AND VERFY (16). The SATL shll issue n ATA write commnd (see 3.1.4) followed by n ATA verify commnd (see 3.1.4) in ccordnce with the constrints defined in subcluse

23 Add subcluses 9.22 WRTE AND VERFY (12) nd 9.23 WRTE AND VERFY (16) commnds s shown 9.22 WRTE AND VERFY(12) commnd (AEh) Commnd Summry The WRTE AND VERFY(12) commnd is used to trnsfer ppliction dt to medium nd then to verify tht dt ws written correctly. Tble 22 WRTE AND VERFY(12) commnd CDB fields Field OPERATON CODE E See WRPROTECT See SBC-2 DPO (disble pge out) gnored BYTCHK LOGCAL BLOCK ADDRESS See WRTE AND VERFY(16) commnd (8Eh) Commnd Summry gnored. The SATL shll ssume vlue of zero (i.e., no byte-by-byte comprison is performed). GROP NMBER The SATL my implement this field s defined in SBC-2. TRANSFER LENGTH The trnsfer length shll be used to set the ATA sector count (see ). A trnsfer length of zero indictes tht dt trnsfer shll not tke plce. f the trnsfer length is not zero, the SATL shll trnsfer the number of sectors specified from the device to the ppliction client. The WRTE AND VERFY(16) commnd is used to trnsfer ppliction dt to medium nd then to verify tht dt ws written correctly. Tble 23 WRTE AND VERFY(16) commnd CDB fields Field OPERATON CODE E See WRPROTECT See SBC-2 DPO (disble pge out) gnored BYTCHK LOGCAL BLOCK ADDRESS See gnored. The SATL shll ssume vlue of zero (i.e., no byte-by-byte comprison is performed). GROP NMBER The SATL my implement this field s defined in SBC-2. TRANSFER LENGTH The trnsfer length shll be used to set the ATA sector count (see ). A trnsfer length of zero indictes tht dt trnsfer shll not tke plce. f the trnsfer length is not zero, the SATL shll trnsfer the number of sectors specified from the device to the ppliction client. 23