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0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * SAS structures and definitions header file
0004  *
0005  * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
0006  * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
0007  */
0008 
0009 #ifndef _SAS_H_
0010 #define _SAS_H_
0011 
0012 #include <linux/types.h>
0013 #include <asm/byteorder.h>
0014 
0015 #define SAS_ADDR_SIZE        8
0016 #define HASHED_SAS_ADDR_SIZE 3
0017 #define SAS_ADDR(_sa) ((unsigned long long) be64_to_cpu(*(__be64 *)(_sa)))
0018 
0019 #define SMP_REQUEST             0x40
0020 #define SMP_RESPONSE            0x41
0021 
0022 #define SSP_DATA                0x01
0023 #define SSP_XFER_RDY            0x05
0024 #define SSP_COMMAND             0x06
0025 #define SSP_RESPONSE            0x07
0026 #define SSP_TASK                0x16
0027 
0028 #define SMP_REPORT_GENERAL       0x00
0029 #define SMP_REPORT_MANUF_INFO    0x01
0030 #define SMP_READ_GPIO_REG        0x02
0031 #define SMP_DISCOVER             0x10
0032 #define SMP_REPORT_PHY_ERR_LOG   0x11
0033 #define SMP_REPORT_PHY_SATA      0x12
0034 #define SMP_REPORT_ROUTE_INFO    0x13
0035 #define SMP_WRITE_GPIO_REG       0x82
0036 #define SMP_CONF_ROUTE_INFO      0x90
0037 #define SMP_PHY_CONTROL          0x91
0038 #define SMP_PHY_TEST_FUNCTION    0x92
0039 
0040 #define SMP_RESP_FUNC_ACC        0x00
0041 #define SMP_RESP_FUNC_UNK        0x01
0042 #define SMP_RESP_FUNC_FAILED     0x02
0043 #define SMP_RESP_INV_FRM_LEN     0x03
0044 #define SMP_RESP_NO_PHY          0x10
0045 #define SMP_RESP_NO_INDEX        0x11
0046 #define SMP_RESP_PHY_NO_SATA     0x12
0047 #define SMP_RESP_PHY_UNK_OP      0x13
0048 #define SMP_RESP_PHY_UNK_TESTF   0x14
0049 #define SMP_RESP_PHY_TEST_INPROG 0x15
0050 #define SMP_RESP_PHY_VACANT      0x16
0051 
0052 /* SAM TMFs */
0053 #define TMF_ABORT_TASK      0x01
0054 #define TMF_ABORT_TASK_SET  0x02
0055 #define TMF_CLEAR_TASK_SET  0x04
0056 #define TMF_LU_RESET        0x08
0057 #define TMF_CLEAR_ACA       0x40
0058 #define TMF_QUERY_TASK      0x80
0059 
0060 /* SAS TMF responses */
0061 #define TMF_RESP_FUNC_COMPLETE   0x00
0062 #define TMF_RESP_INVALID_FRAME   0x02
0063 #define TMF_RESP_FUNC_ESUPP      0x04
0064 #define TMF_RESP_FUNC_FAILED     0x05
0065 #define TMF_RESP_FUNC_SUCC       0x08
0066 #define TMF_RESP_NO_LUN          0x09
0067 #define TMF_RESP_OVERLAPPED_TAG  0x0A
0068 
0069 enum sas_oob_mode {
0070     OOB_NOT_CONNECTED,
0071     SATA_OOB_MODE,
0072     SAS_OOB_MODE
0073 };
0074 
0075 /* See sas_discover.c if you plan on changing these */
0076 enum sas_device_type {
0077     /* these are SAS protocol defined (attached device type field) */
0078     SAS_PHY_UNUSED = 0,
0079     SAS_END_DEVICE = 1,
0080     SAS_EDGE_EXPANDER_DEVICE = 2,
0081     SAS_FANOUT_EXPANDER_DEVICE = 3,
0082     /* these are internal to libsas */
0083     SAS_HA = 4,
0084     SAS_SATA_DEV = 5,
0085     SAS_SATA_PM = 7,
0086     SAS_SATA_PM_PORT = 8,
0087     SAS_SATA_PENDING = 9,
0088 };
0089 
0090 enum sas_protocol {
0091     SAS_PROTOCOL_NONE       = 0,
0092     SAS_PROTOCOL_SATA       = 0x01,
0093     SAS_PROTOCOL_SMP        = 0x02,
0094     SAS_PROTOCOL_STP        = 0x04,
0095     SAS_PROTOCOL_SSP        = 0x08,
0096     SAS_PROTOCOL_ALL        = 0x0E,
0097     SAS_PROTOCOL_STP_ALL        = SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA,
0098     /* these are internal to libsas */
0099     SAS_PROTOCOL_INTERNAL_ABORT = 0x10,
0100 };
0101 
0102 /* From the spec; local phys only */
0103 enum phy_func {
0104     PHY_FUNC_NOP,
0105     PHY_FUNC_LINK_RESET,          /* Enables the phy */
0106     PHY_FUNC_HARD_RESET,
0107     PHY_FUNC_DISABLE,
0108     PHY_FUNC_CLEAR_ERROR_LOG = 5,
0109     PHY_FUNC_CLEAR_AFFIL,
0110     PHY_FUNC_TX_SATA_PS_SIGNAL,
0111     PHY_FUNC_RELEASE_SPINUP_HOLD = 0x10, /* LOCAL PORT ONLY! */
0112     PHY_FUNC_SET_LINK_RATE,
0113     PHY_FUNC_GET_EVENTS,
0114 };
0115 
0116 /* SAS LLDD would need to report only _very_few_ of those, like BROADCAST.
0117  * Most of those are here for completeness.
0118  */
0119 enum sas_prim {
0120     SAS_PRIM_AIP_NORMAL = 1,
0121     SAS_PRIM_AIP_R0     = 2,
0122     SAS_PRIM_AIP_R1     = 3,
0123     SAS_PRIM_AIP_R2     = 4,
0124     SAS_PRIM_AIP_WC     = 5,
0125     SAS_PRIM_AIP_WD     = 6,
0126     SAS_PRIM_AIP_WP     = 7,
0127     SAS_PRIM_AIP_RWP    = 8,
0128 
0129     SAS_PRIM_BC_CH      = 9,
0130     SAS_PRIM_BC_RCH0    = 10,
0131     SAS_PRIM_BC_RCH1    = 11,
0132     SAS_PRIM_BC_R0      = 12,
0133     SAS_PRIM_BC_R1      = 13,
0134     SAS_PRIM_BC_R2      = 14,
0135     SAS_PRIM_BC_R3      = 15,
0136     SAS_PRIM_BC_R4      = 16,
0137 
0138     SAS_PRIM_NOTIFY_ENSP= 17,
0139     SAS_PRIM_NOTIFY_R0  = 18,
0140     SAS_PRIM_NOTIFY_R1  = 19,
0141     SAS_PRIM_NOTIFY_R2  = 20,
0142 
0143     SAS_PRIM_CLOSE_CLAF = 21,
0144     SAS_PRIM_CLOSE_NORM = 22,
0145     SAS_PRIM_CLOSE_R0   = 23,
0146     SAS_PRIM_CLOSE_R1   = 24,
0147 
0148     SAS_PRIM_OPEN_RTRY  = 25,
0149     SAS_PRIM_OPEN_RJCT  = 26,
0150     SAS_PRIM_OPEN_ACPT  = 27,
0151 
0152     SAS_PRIM_DONE       = 28,
0153     SAS_PRIM_BREAK      = 29,
0154 
0155     SATA_PRIM_DMAT      = 33,
0156     SATA_PRIM_PMNAK     = 34,
0157     SATA_PRIM_PMACK     = 35,
0158     SATA_PRIM_PMREQ_S   = 36,
0159     SATA_PRIM_PMREQ_P   = 37,
0160     SATA_SATA_R_ERR     = 38,
0161 };
0162 
0163 enum sas_open_rej_reason {
0164     /* Abandon open */
0165     SAS_OREJ_UNKNOWN   = 0,
0166     SAS_OREJ_BAD_DEST  = 1,
0167     SAS_OREJ_CONN_RATE = 2,
0168     SAS_OREJ_EPROTO    = 3,
0169     SAS_OREJ_RESV_AB0  = 4,
0170     SAS_OREJ_RESV_AB1  = 5,
0171     SAS_OREJ_RESV_AB2  = 6,
0172     SAS_OREJ_RESV_AB3  = 7,
0173     SAS_OREJ_WRONG_DEST= 8,
0174     SAS_OREJ_STP_NORES = 9,
0175 
0176     /* Retry open */
0177     SAS_OREJ_NO_DEST   = 10,
0178     SAS_OREJ_PATH_BLOCKED = 11,
0179     SAS_OREJ_RSVD_CONT0 = 12,
0180     SAS_OREJ_RSVD_CONT1 = 13,
0181     SAS_OREJ_RSVD_INIT0 = 14,
0182     SAS_OREJ_RSVD_INIT1 = 15,
0183     SAS_OREJ_RSVD_STOP0 = 16,
0184     SAS_OREJ_RSVD_STOP1 = 17,
0185     SAS_OREJ_RSVD_RETRY = 18,
0186 };
0187 
0188 enum sas_gpio_reg_type {
0189     SAS_GPIO_REG_CFG   = 0,
0190     SAS_GPIO_REG_RX    = 1,
0191     SAS_GPIO_REG_RX_GP = 2,
0192     SAS_GPIO_REG_TX    = 3,
0193     SAS_GPIO_REG_TX_GP = 4,
0194 };
0195 
0196 /* Response frame DATAPRES field */
0197 enum {
0198     SAS_DATAPRES_NO_DATA        = 0,
0199     SAS_DATAPRES_RESPONSE_DATA  = 1,
0200     SAS_DATAPRES_SENSE_DATA     = 2,
0201 };
0202 
0203 struct  dev_to_host_fis {
0204     u8     fis_type;      /* 0x34 */
0205     u8     flags;
0206     u8     status;
0207     u8     error;
0208 
0209     u8     lbal;
0210     union { u8 lbam; u8 byte_count_low; };
0211     union { u8 lbah; u8 byte_count_high; };
0212     u8     device;
0213 
0214     u8     lbal_exp;
0215     u8     lbam_exp;
0216     u8     lbah_exp;
0217     u8     _r_a;
0218 
0219     union { u8  sector_count; u8 interrupt_reason; };
0220     u8     sector_count_exp;
0221     u8     _r_b;
0222     u8     _r_c;
0223 
0224     u32    _r_d;
0225 } __attribute__ ((packed));
0226 
0227 struct host_to_dev_fis {
0228     u8     fis_type;      /* 0x27 */
0229     u8     flags;
0230     u8     command;
0231     u8     features;
0232 
0233     u8     lbal;
0234     union { u8 lbam; u8 byte_count_low; };
0235     union { u8 lbah; u8 byte_count_high; };
0236     u8     device;
0237 
0238     u8     lbal_exp;
0239     u8     lbam_exp;
0240     u8     lbah_exp;
0241     u8     features_exp;
0242 
0243     union { u8  sector_count; u8 interrupt_reason; };
0244     u8     sector_count_exp;
0245     u8     _r_a;
0246     u8     control;
0247 
0248     u32    _r_b;
0249 } __attribute__ ((packed));
0250 
0251 /* Prefer to have code clarity over header file clarity.
0252  */
0253 #ifdef __LITTLE_ENDIAN_BITFIELD
0254 struct sas_identify_frame {
0255     /* Byte 0 */
0256     u8  frame_type:4;
0257     u8  dev_type:3;
0258     u8  _un0:1;
0259 
0260     /* Byte 1 */
0261     u8  _un1;
0262 
0263     /* Byte 2 */
0264     union {
0265         struct {
0266             u8  _un20:1;
0267             u8  smp_iport:1;
0268             u8  stp_iport:1;
0269             u8  ssp_iport:1;
0270             u8  _un247:4;
0271         };
0272         u8 initiator_bits;
0273     };
0274 
0275     /* Byte 3 */
0276     union {
0277         struct {
0278             u8  _un30:1;
0279             u8 smp_tport:1;
0280             u8 stp_tport:1;
0281             u8 ssp_tport:1;
0282             u8 _un347:4;
0283         };
0284         u8 target_bits;
0285     };
0286 
0287     /* Byte 4 - 11 */
0288     u8 _un4_11[8];
0289 
0290     /* Byte 12 - 19 */
0291     u8 sas_addr[SAS_ADDR_SIZE];
0292 
0293     /* Byte 20 */
0294     u8 phy_id;
0295 
0296     u8 _un21_27[7];
0297 
0298     __be32 crc;
0299 } __attribute__ ((packed));
0300 
0301 struct ssp_frame_hdr {
0302     u8     frame_type;
0303     u8     hashed_dest_addr[HASHED_SAS_ADDR_SIZE];
0304     u8     _r_a;
0305     u8     hashed_src_addr[HASHED_SAS_ADDR_SIZE];
0306     __be16 _r_b;
0307 
0308     u8     changing_data_ptr:1;
0309     u8     retransmit:1;
0310     u8     retry_data_frames:1;
0311     u8     _r_c:5;
0312 
0313     u8     num_fill_bytes:2;
0314     u8     _r_d:6;
0315 
0316     u32    _r_e;
0317     __be16 tag;
0318     __be16 tptt;
0319     __be32 data_offs;
0320 } __attribute__ ((packed));
0321 
0322 struct ssp_response_iu {
0323     u8     _r_a[10];
0324 
0325     u8     datapres:2;
0326     u8     _r_b:6;
0327 
0328     u8     status;
0329 
0330     u32    _r_c;
0331 
0332     __be32 sense_data_len;
0333     __be32 response_data_len;
0334 
0335     union {
0336         DECLARE_FLEX_ARRAY(u8, resp_data);
0337         DECLARE_FLEX_ARRAY(u8, sense_data);
0338     };
0339 } __attribute__ ((packed));
0340 
0341 struct ssp_command_iu {
0342     u8     lun[8];
0343     u8     _r_a;
0344 
0345     union {
0346         struct {
0347             u8  attr:3;
0348             u8  prio:4;
0349             u8  efb:1;
0350         };
0351         u8 efb_prio_attr;
0352     };
0353 
0354     u8    _r_b;
0355 
0356     u8    _r_c:2;
0357     u8    add_cdb_len:6;
0358 
0359     u8    cdb[16];
0360     u8    add_cdb[];
0361 } __attribute__ ((packed));
0362 
0363 struct xfer_rdy_iu {
0364     __be32 requested_offset;
0365     __be32 write_data_len;
0366     __be32 _r_a;
0367 } __attribute__ ((packed));
0368 
0369 struct ssp_tmf_iu {
0370     u8     lun[8];
0371     u16    _r_a;
0372     u8     tmf;
0373     u8     _r_b;
0374     __be16 tag;
0375     u8     _r_c[14];
0376 } __attribute__ ((packed));
0377 
0378 /* ---------- SMP ---------- */
0379 
0380 struct report_general_resp {
0381     __be16  change_count;
0382     __be16  route_indexes;
0383     u8      _r_a;
0384     u8      num_phys;
0385 
0386     u8      conf_route_table:1;
0387     u8      configuring:1;
0388     u8  config_others:1;
0389     u8  orej_retry_supp:1;
0390     u8  stp_cont_awt:1;
0391     u8  self_config:1;
0392     u8  zone_config:1;
0393     u8  t2t_supp:1;
0394 
0395     u8      _r_c;
0396 
0397     u8      enclosure_logical_id[8];
0398 
0399     u8      _r_d[12];
0400 } __attribute__ ((packed));
0401 
0402 struct discover_resp {
0403     u8    _r_a[5];
0404 
0405     u8    phy_id;
0406     __be16 _r_b;
0407 
0408     u8    _r_c:4;
0409     u8    attached_dev_type:3;
0410     u8    _r_d:1;
0411 
0412     u8    linkrate:4;
0413     u8    _r_e:4;
0414 
0415     u8    attached_sata_host:1;
0416     u8    iproto:3;
0417     u8    _r_f:4;
0418 
0419     u8    attached_sata_dev:1;
0420     u8    tproto:3;
0421     u8    _r_g:3;
0422     u8    attached_sata_ps:1;
0423 
0424     u8    sas_addr[8];
0425     u8    attached_sas_addr[8];
0426     u8    attached_phy_id;
0427 
0428     u8    _r_h[7];
0429 
0430     u8    hmin_linkrate:4;
0431     u8    pmin_linkrate:4;
0432     u8    hmax_linkrate:4;
0433     u8    pmax_linkrate:4;
0434 
0435     u8    change_count;
0436 
0437     u8    pptv:4;
0438     u8    _r_i:3;
0439     u8    virtual:1;
0440 
0441     u8    routing_attr:4;
0442     u8    _r_j:4;
0443 
0444     u8    conn_type;
0445     u8    conn_el_index;
0446     u8    conn_phy_link;
0447 
0448     u8    _r_k[8];
0449 } __attribute__ ((packed));
0450 
0451 struct report_phy_sata_resp {
0452     u8    _r_a[5];
0453 
0454     u8    phy_id;
0455     u8    _r_b;
0456 
0457     u8    affil_valid:1;
0458     u8    affil_supp:1;
0459     u8    _r_c:6;
0460 
0461     u32    _r_d;
0462 
0463     u8    stp_sas_addr[8];
0464 
0465     struct dev_to_host_fis fis;
0466 
0467     u32   _r_e;
0468 
0469     u8    affil_stp_ini_addr[8];
0470 
0471     __be32 crc;
0472 } __attribute__ ((packed));
0473 
0474 #elif defined(__BIG_ENDIAN_BITFIELD)
0475 struct sas_identify_frame {
0476     /* Byte 0 */
0477     u8  _un0:1;
0478     u8  dev_type:3;
0479     u8  frame_type:4;
0480 
0481     /* Byte 1 */
0482     u8  _un1;
0483 
0484     /* Byte 2 */
0485     union {
0486         struct {
0487             u8  _un247:4;
0488             u8  ssp_iport:1;
0489             u8  stp_iport:1;
0490             u8  smp_iport:1;
0491             u8  _un20:1;
0492         };
0493         u8 initiator_bits;
0494     };
0495 
0496     /* Byte 3 */
0497     union {
0498         struct {
0499             u8 _un347:4;
0500             u8 ssp_tport:1;
0501             u8 stp_tport:1;
0502             u8 smp_tport:1;
0503             u8 _un30:1;
0504         };
0505         u8 target_bits;
0506     };
0507 
0508     /* Byte 4 - 11 */
0509     u8 _un4_11[8];
0510 
0511     /* Byte 12 - 19 */
0512     u8 sas_addr[SAS_ADDR_SIZE];
0513 
0514     /* Byte 20 */
0515     u8 phy_id;
0516 
0517     u8 _un21_27[7];
0518 
0519     __be32 crc;
0520 } __attribute__ ((packed));
0521 
0522 struct ssp_frame_hdr {
0523     u8     frame_type;
0524     u8     hashed_dest_addr[HASHED_SAS_ADDR_SIZE];
0525     u8     _r_a;
0526     u8     hashed_src_addr[HASHED_SAS_ADDR_SIZE];
0527     __be16 _r_b;
0528 
0529     u8     _r_c:5;
0530     u8     retry_data_frames:1;
0531     u8     retransmit:1;
0532     u8     changing_data_ptr:1;
0533 
0534     u8     _r_d:6;
0535     u8     num_fill_bytes:2;
0536 
0537     u32    _r_e;
0538     __be16 tag;
0539     __be16 tptt;
0540     __be32 data_offs;
0541 } __attribute__ ((packed));
0542 
0543 struct ssp_response_iu {
0544     u8     _r_a[10];
0545 
0546     u8     _r_b:6;
0547     u8     datapres:2;
0548 
0549     u8     status;
0550 
0551     u32    _r_c;
0552 
0553     __be32 sense_data_len;
0554     __be32 response_data_len;
0555 
0556     union {
0557         DECLARE_FLEX_ARRAY(u8, resp_data);
0558         DECLARE_FLEX_ARRAY(u8, sense_data);
0559     };
0560 } __attribute__ ((packed));
0561 
0562 struct ssp_command_iu {
0563     u8     lun[8];
0564     u8     _r_a;
0565 
0566     union {
0567         struct {
0568             u8  efb:1;
0569             u8  prio:4;
0570             u8  attr:3;
0571         };
0572         u8 efb_prio_attr;
0573     };
0574 
0575     u8    _r_b;
0576 
0577     u8    add_cdb_len:6;
0578     u8    _r_c:2;
0579 
0580     u8    cdb[16];
0581     u8    add_cdb[];
0582 } __attribute__ ((packed));
0583 
0584 struct xfer_rdy_iu {
0585     __be32 requested_offset;
0586     __be32 write_data_len;
0587     __be32 _r_a;
0588 } __attribute__ ((packed));
0589 
0590 struct ssp_tmf_iu {
0591     u8     lun[8];
0592     u16    _r_a;
0593     u8     tmf;
0594     u8     _r_b;
0595     __be16 tag;
0596     u8     _r_c[14];
0597 } __attribute__ ((packed));
0598 
0599 /* ---------- SMP ---------- */
0600 
0601 struct report_general_resp {
0602     __be16  change_count;
0603     __be16  route_indexes;
0604     u8      _r_a;
0605     u8      num_phys;
0606 
0607     u8  t2t_supp:1;
0608     u8  zone_config:1;
0609     u8  self_config:1;
0610     u8  stp_cont_awt:1;
0611     u8  orej_retry_supp:1;
0612     u8  config_others:1;
0613     u8      configuring:1;
0614     u8      conf_route_table:1;
0615 
0616     u8      _r_c;
0617 
0618     u8      enclosure_logical_id[8];
0619 
0620     u8      _r_d[12];
0621 } __attribute__ ((packed));
0622 
0623 struct discover_resp {
0624     u8    _r_a[5];
0625 
0626     u8    phy_id;
0627     __be16 _r_b;
0628 
0629     u8    _r_d:1;
0630     u8    attached_dev_type:3;
0631     u8    _r_c:4;
0632 
0633     u8    _r_e:4;
0634     u8    linkrate:4;
0635 
0636     u8    _r_f:4;
0637     u8    iproto:3;
0638     u8    attached_sata_host:1;
0639 
0640     u8    attached_sata_ps:1;
0641     u8    _r_g:3;
0642     u8    tproto:3;
0643     u8    attached_sata_dev:1;
0644 
0645     u8    sas_addr[8];
0646     u8    attached_sas_addr[8];
0647     u8    attached_phy_id;
0648 
0649     u8    _r_h[7];
0650 
0651     u8    pmin_linkrate:4;
0652     u8    hmin_linkrate:4;
0653     u8    pmax_linkrate:4;
0654     u8    hmax_linkrate:4;
0655 
0656     u8    change_count;
0657 
0658     u8    virtual:1;
0659     u8    _r_i:3;
0660     u8    pptv:4;
0661 
0662     u8    _r_j:4;
0663     u8    routing_attr:4;
0664 
0665     u8    conn_type;
0666     u8    conn_el_index;
0667     u8    conn_phy_link;
0668 
0669     u8    _r_k[8];
0670 } __attribute__ ((packed));
0671 
0672 struct report_phy_sata_resp {
0673     u8    _r_a[5];
0674 
0675     u8    phy_id;
0676     u8    _r_b;
0677 
0678     u8    _r_c:6;
0679     u8    affil_supp:1;
0680     u8    affil_valid:1;
0681 
0682     u32   _r_d;
0683 
0684     u8    stp_sas_addr[8];
0685 
0686     struct dev_to_host_fis fis;
0687 
0688     u32   _r_e;
0689 
0690     u8    affil_stp_ini_addr[8];
0691 
0692     __be32 crc;
0693 } __attribute__ ((packed));
0694 
0695 #else
0696 #error "Bitfield order not defined!"
0697 #endif
0698 
0699 struct smp_rg_resp {
0700     u8    frame_type;
0701     u8    function;
0702     u8    result;
0703     u8    reserved;
0704     struct report_general_resp rg;
0705 } __attribute__ ((packed));
0706 
0707 struct smp_disc_resp {
0708     u8    frame_type;
0709     u8    function;
0710     u8    result;
0711     u8    reserved;
0712     struct discover_resp disc;
0713 } __attribute__ ((packed));
0714 
0715 struct smp_rps_resp {
0716     u8    frame_type;
0717     u8    function;
0718     u8    result;
0719     u8    reserved;
0720     struct report_phy_sata_resp rps;
0721 } __attribute__ ((packed));
0722 
0723 #endif /* _SAS_H_ */
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