/* * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv * Copyright (C) 1992 Eric Youngdale * Simulate a host adapter with 2 disks attached. Do a lot of checking * to make sure that we are not getting blocks mixed up, and PANIC if * anything out of the ordinary is seen. * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ * * This version is more generic, simulating a variable number of disk * (or disk like devices) sharing a common amount of RAM. To be more * realistic, the simulated devices have the transport attributes of * SAS disks. * * * For documentation see http://sg.danny.cz/sg/sdebug26.html * * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] * dpg: work for devfs large number of disks [20010809] * forked for lk 2.5 series [20011216, 20020101] * use vmalloc() more inquiry+mode_sense [20020302] * add timers for delayed responses [20020721] * Patrick Mansfield max_luns+scsi_level [20021031] * Mike Anderson sysfs work [20021118] * dpg: change style of boot options to "scsi_debug.num_tgts=2" and * module options to "modprobe scsi_debug num_tgts=2" [20021221] */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "sd.h" #include "scsi_logging.h" #define SCSI_DEBUG_VERSION "1.85" static const char *scsi_debug_version_date = "20141022"; #define MY_NAME "scsi_debug" /* Additional Sense Code (ASC) */ #define NO_ADDITIONAL_SENSE 0x0 #define LOGICAL_UNIT_NOT_READY 0x4 #define LOGICAL_UNIT_COMMUNICATION_FAILURE 0x8 #define UNRECOVERED_READ_ERR 0x11 #define PARAMETER_LIST_LENGTH_ERR 0x1a #define INVALID_OPCODE 0x20 #define LBA_OUT_OF_RANGE 0x21 #define INVALID_FIELD_IN_CDB 0x24 #define INVALID_FIELD_IN_PARAM_LIST 0x26 #define UA_RESET_ASC 0x29 #define UA_CHANGED_ASC 0x2a #define TARGET_CHANGED_ASC 0x3f #define LUNS_CHANGED_ASCQ 0x0e #define INSUFF_RES_ASC 0x55 #define INSUFF_RES_ASCQ 0x3 #define POWER_ON_RESET_ASCQ 0x0 #define BUS_RESET_ASCQ 0x2 /* scsi bus reset occurred */ #define MODE_CHANGED_ASCQ 0x1 /* mode parameters changed */ #define CAPACITY_CHANGED_ASCQ 0x9 #define SAVING_PARAMS_UNSUP 0x39 #define TRANSPORT_PROBLEM 0x4b #define THRESHOLD_EXCEEDED 0x5d #define LOW_POWER_COND_ON 0x5e #define MISCOMPARE_VERIFY_ASC 0x1d #define MICROCODE_CHANGED_ASCQ 0x1 /* with TARGET_CHANGED_ASC */ #define MICROCODE_CHANGED_WO_RESET_ASCQ 0x16 /* Additional Sense Code Qualifier (ASCQ) */ #define ACK_NAK_TO 0x3 /* Default values for driver parameters */ #define DEF_NUM_HOST 1 #define DEF_NUM_TGTS 1 #define DEF_MAX_LUNS 1 /* With these defaults, this driver will make 1 host with 1 target * (id 0) containing 1 logical unit (lun 0). That is 1 device. */ #define DEF_ATO 1 #define DEF_DELAY 1 /* if > 0 unit is a jiffy */ #define DEF_DEV_SIZE_MB 8 #define DEF_DIF 0 #define DEF_DIX 0 #define DEF_D_SENSE 0 #define DEF_EVERY_NTH 0 #define DEF_FAKE_RW 0 #define DEF_GUARD 0 #define DEF_HOST_LOCK 0 #define DEF_LBPU 0 #define DEF_LBPWS 0 #define DEF_LBPWS10 0 #define DEF_LBPRZ 1 #define DEF_LOWEST_ALIGNED 0 #define DEF_NDELAY 0 /* if > 0 unit is a nanosecond */ #define DEF_NO_LUN_0 0 #define DEF_NUM_PARTS 0 #define DEF_OPTS 0 #define DEF_OPT_BLKS 64 #define DEF_PHYSBLK_EXP 0 #define DEF_PTYPE 0 #define DEF_REMOVABLE false #define DEF_SCSI_LEVEL 6 /* INQUIRY, byte2 [6->SPC-4] */ #define DEF_SECTOR_SIZE 512 #define DEF_UNMAP_ALIGNMENT 0 #define DEF_UNMAP_GRANULARITY 1 #define DEF_UNMAP_MAX_BLOCKS 0xFFFFFFFF #define DEF_UNMAP_MAX_DESC 256 #define DEF_VIRTUAL_GB 0 #define DEF_VPD_USE_HOSTNO 1 #define DEF_WRITESAME_LENGTH 0xFFFF #define DEF_STRICT 0 #define DELAY_OVERRIDDEN -9999 /* bit mask values for scsi_debug_opts */ #define SCSI_DEBUG_OPT_NOISE 1 #define SCSI_DEBUG_OPT_MEDIUM_ERR 2 #define SCSI_DEBUG_OPT_TIMEOUT 4 #define SCSI_DEBUG_OPT_RECOVERED_ERR 8 #define SCSI_DEBUG_OPT_TRANSPORT_ERR 16 #define SCSI_DEBUG_OPT_DIF_ERR 32 #define SCSI_DEBUG_OPT_DIX_ERR 64 #define SCSI_DEBUG_OPT_MAC_TIMEOUT 128 #define SCSI_DEBUG_OPT_SHORT_TRANSFER 0x100 #define SCSI_DEBUG_OPT_Q_NOISE 0x200 #define SCSI_DEBUG_OPT_ALL_TSF 0x400 #define SCSI_DEBUG_OPT_RARE_TSF 0x800 #define SCSI_DEBUG_OPT_N_WCE 0x1000 #define SCSI_DEBUG_OPT_RESET_NOISE 0x2000 #define SCSI_DEBUG_OPT_NO_CDB_NOISE 0x4000 #define SCSI_DEBUG_OPT_ALL_NOISE (0x1 | 0x200 | 0x2000) /* When "every_nth" > 0 then modulo "every_nth" commands: * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set * - a RECOVERED_ERROR is simulated on successful read and write * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. * - a TRANSPORT_ERROR is simulated on successful read and write * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. * * When "every_nth" < 0 then after "- every_nth" commands: * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set * - a RECOVERED_ERROR is simulated on successful read and write * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. * - a TRANSPORT_ERROR is simulated on successful read and write * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. * This will continue until some other action occurs (e.g. the user * writing a new value (other than -1 or 1) to every_nth via sysfs). */ /* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs)are returned in * priority order. In the subset implemented here lower numbers have higher * priority. The UA numbers should be a sequence starting from 0 with * SDEBUG_NUM_UAS being 1 higher than the highest numbered UA. */ #define SDEBUG_UA_POR 0 /* Power on, reset, or bus device reset */ #define SDEBUG_UA_BUS_RESET 1 #define SDEBUG_UA_MODE_CHANGED 2 #define SDEBUG_UA_CAPACITY_CHANGED 3 #define SDEBUG_UA_LUNS_CHANGED 4 #define SDEBUG_UA_MICROCODE_CHANGED 5 /* simulate firmware change */ #define SDEBUG_UA_MICROCODE_CHANGED_WO_RESET 6 #define SDEBUG_NUM_UAS 7 /* for check_readiness() */ #define UAS_ONLY 1 /* check for UAs only */ #define UAS_TUR 0 /* if no UAs then check if media access possible */ /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this * sector on read commands: */ #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ #define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) * or "peripheral device" addressing (value 0) */ #define SAM2_LUN_ADDRESS_METHOD 0 #define SAM2_WLUN_REPORT_LUNS 0xc101 /* SCSI_DEBUG_CANQUEUE is the maximum number of commands that can be queued * (for response) at one time. Can be reduced by max_queue option. Command * responses are not queued when delay=0 and ndelay=0. The per-device * DEF_CMD_PER_LUN can be changed via sysfs: * /sys/class/scsi_device//device/queue_depth but cannot exceed * SCSI_DEBUG_CANQUEUE. */ #define SCSI_DEBUG_CANQUEUE_WORDS 9 /* a WORD is bits in a long */ #define SCSI_DEBUG_CANQUEUE (SCSI_DEBUG_CANQUEUE_WORDS * BITS_PER_LONG) #define DEF_CMD_PER_LUN 255 #if DEF_CMD_PER_LUN > SCSI_DEBUG_CANQUEUE #warning "Expect DEF_CMD_PER_LUN <= SCSI_DEBUG_CANQUEUE" #endif /* SCSI opcodes (first byte of cdb) mapped onto these indexes */ enum sdeb_opcode_index { SDEB_I_INVALID_OPCODE = 0, SDEB_I_INQUIRY = 1, SDEB_I_REPORT_LUNS = 2, SDEB_I_REQUEST_SENSE = 3, SDEB_I_TEST_UNIT_READY = 4, SDEB_I_MODE_SENSE = 5, /* 6, 10 */ SDEB_I_MODE_SELECT = 6, /* 6, 10 */ SDEB_I_LOG_SENSE = 7, SDEB_I_READ_CAPACITY = 8, /* 10; 16 is in SA_IN(16) */ SDEB_I_READ = 9, /* 6, 10, 12, 16 */ SDEB_I_WRITE = 10, /* 6, 10, 12, 16 */ SDEB_I_START_STOP = 11, SDEB_I_SERV_ACT_IN = 12, /* 12, 16 */ SDEB_I_SERV_ACT_OUT = 13, /* 12, 16 */ SDEB_I_MAINT_IN = 14, SDEB_I_MAINT_OUT = 15, SDEB_I_VERIFY = 16, /* 10 only */ SDEB_I_VARIABLE_LEN = 17, SDEB_I_RESERVE = 18, /* 6, 10 */ SDEB_I_RELEASE = 19, /* 6, 10 */ SDEB_I_ALLOW_REMOVAL = 20, /* PREVENT ALLOW MEDIUM REMOVAL */ SDEB_I_REZERO_UNIT = 21, /* REWIND in SSC */ SDEB_I_ATA_PT = 22, /* 12, 16 */ SDEB_I_SEND_DIAG = 23, SDEB_I_UNMAP = 24, SDEB_I_XDWRITEREAD = 25, /* 10 only */ SDEB_I_WRITE_BUFFER = 26, SDEB_I_WRITE_SAME = 27, /* 10, 16 */ SDEB_I_SYNC_CACHE = 28, /* 10 only */ SDEB_I_COMP_WRITE = 29, SDEB_I_LAST_ELEMENT = 30, /* keep this last */ }; static const unsigned char opcode_ind_arr[256] = { /* 0x0; 0x0->0x1f: 6 byte cdbs */ SDEB_I_TEST_UNIT_READY, SDEB_I_REZERO_UNIT, 0, SDEB_I_REQUEST_SENSE, 0, 0, 0, 0, SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, 0, 0, 0, SDEB_I_INQUIRY, 0, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, SDEB_I_RELEASE, 0, 0, SDEB_I_MODE_SENSE, SDEB_I_START_STOP, 0, SDEB_I_SEND_DIAG, SDEB_I_ALLOW_REMOVAL, 0, /* 0x20; 0x20->0x3f: 10 byte cdbs */ 0, 0, 0, 0, 0, SDEB_I_READ_CAPACITY, 0, 0, SDEB_I_READ, 0, SDEB_I_WRITE, 0, 0, 0, 0, SDEB_I_VERIFY, 0, 0, 0, 0, 0, SDEB_I_SYNC_CACHE, 0, 0, 0, 0, 0, SDEB_I_WRITE_BUFFER, 0, 0, 0, 0, /* 0x40; 0x40->0x5f: 10 byte cdbs */ 0, SDEB_I_WRITE_SAME, SDEB_I_UNMAP, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, SDEB_I_LOG_SENSE, 0, 0, 0, 0, 0, SDEB_I_XDWRITEREAD, 0, SDEB_I_MODE_SELECT, SDEB_I_RESERVE, SDEB_I_RELEASE, 0, 0, SDEB_I_MODE_SENSE, 0, 0, 0, 0, 0, /* 0x60; 0x60->0x7d are reserved */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, SDEB_I_VARIABLE_LEN, /* 0x80; 0x80->0x9f: 16 byte cdbs */ 0, 0, 0, 0, 0, SDEB_I_ATA_PT, 0, 0, SDEB_I_READ, SDEB_I_COMP_WRITE, SDEB_I_WRITE, 0, 0, 0, 0, 0, 0, 0, 0, SDEB_I_WRITE_SAME, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, SDEB_I_SERV_ACT_IN, SDEB_I_SERV_ACT_OUT, /* 0xa0; 0xa0->0xbf: 12 byte cdbs */ SDEB_I_REPORT_LUNS, SDEB_I_ATA_PT, 0, SDEB_I_MAINT_IN, SDEB_I_MAINT_OUT, 0, 0, 0, SDEB_I_READ, SDEB_I_SERV_ACT_OUT, SDEB_I_WRITE, SDEB_I_SERV_ACT_IN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xc0; 0xc0->0xff: vendor specific */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; #define F_D_IN 1 #define F_D_OUT 2 #define F_D_OUT_MAYBE 4 /* WRITE SAME, NDOB bit */ #define F_D_UNKN 8 #define F_RL_WLUN_OK 0x10 #define F_SKIP_UA 0x20 #define F_DELAY_OVERR 0x40 #define F_SA_LOW 0x80 /* cdb byte 1, bits 4 to 0 */ #define F_SA_HIGH 0x100 /* as used by variable length cdbs */ #define F_INV_OP 0x200 #define F_FAKE_RW 0x400 #define F_M_ACCESS 0x800 /* media access */ #define FF_RESPOND (F_RL_WLUN_OK | F_SKIP_UA | F_DELAY_OVERR) #define FF_DIRECT_IO (F_M_ACCESS | F_FAKE_RW) #define FF_SA (F_SA_HIGH | F_SA_LOW) struct sdebug_dev_info; static int resp_inquiry(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_report_luns(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_requests(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_mode_sense(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_mode_select(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_log_sense(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_readcap(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_read_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_write_dt0(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_start_stop(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_readcap16(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_get_lba_status(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_report_tgtpgs(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_unmap(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_rsup_opcodes(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_rsup_tmfs(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_write_same_10(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_write_same_16(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_xdwriteread_10(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_comp_write(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_write_buffer(struct scsi_cmnd *, struct sdebug_dev_info *); struct opcode_info_t { u8 num_attached; /* 0 if this is it (i.e. a leaf); use 0xff * for terminating element */ u8 opcode; /* if num_attached > 0, preferred */ u16 sa; /* service action */ u32 flags; /* OR-ed set of SDEB_F_* */ int (*pfp)(struct scsi_cmnd *, struct sdebug_dev_info *); const struct opcode_info_t *arrp; /* num_attached elements or NULL */ u8 len_mask[16]; /* len=len_mask[0], then mask for cdb[1]... */ /* ignore cdb bytes after position 15 */ }; static const struct opcode_info_t msense_iarr[1] = { {0, 0x1a, 0, F_D_IN, NULL, NULL, {6, 0xe8, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, }; static const struct opcode_info_t mselect_iarr[1] = { {0, 0x15, 0, F_D_OUT, NULL, NULL, {6, 0xf1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, }; static const struct opcode_info_t read_iarr[3] = { {0, 0x28, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(10) */ {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, {0, 0x8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL, /* READ(6) */ {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {0, 0xa8, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, NULL,/* READ(12) */ {12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xc7, 0, 0, 0, 0} }, }; static const struct opcode_info_t write_iarr[3] = { {0, 0x2a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 10 */ {10, 0xfb, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, {0, 0xa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 6 */ {6, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {0, 0xaa, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, /* 12 */ {12, 0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xc7, 0, 0, 0, 0} }, }; static const struct opcode_info_t sa_in_iarr[1] = { {0, 0x9e, 0x12, F_SA_LOW | F_D_IN, resp_get_lba_status, NULL, {16, 0x12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0xc7} }, }; static const struct opcode_info_t vl_iarr[1] = { /* VARIABLE LENGTH */ {0, 0x7f, 0xb, F_SA_HIGH | F_D_OUT | FF_DIRECT_IO, resp_write_dt0, NULL, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0xb, 0xfa, 0, 0xff, 0xff, 0xff, 0xff} }, /* WRITE(32) */ }; static const struct opcode_info_t maint_in_iarr[2] = { {0, 0xa3, 0xc, F_SA_LOW | F_D_IN, resp_rsup_opcodes, NULL, {12, 0xc, 0x87, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, 0} }, {0, 0xa3, 0xd, F_SA_LOW | F_D_IN, resp_rsup_tmfs, NULL, {12, 0xd, 0x80, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, 0} }, }; static const struct opcode_info_t write_same_iarr[1] = { {0, 0x93, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_16, NULL, {16, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xc7} }, }; static const struct opcode_info_t reserve_iarr[1] = { {0, 0x16, 0, F_D_OUT, NULL, NULL, /* RESERVE(6) */ {6, 0x1f, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, }; static const struct opcode_info_t release_iarr[1] = { {0, 0x17, 0, F_D_OUT, NULL, NULL, /* RELEASE(6) */ {6, 0x1f, 0xff, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, }; /* This array is accessed via SDEB_I_* values. Make sure all are mapped, * plus the terminating elements for logic that scans this table such as * REPORT SUPPORTED OPERATION CODES. */ static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEMENT + 1] = { /* 0 */ {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {0, 0x12, 0, FF_RESPOND | F_D_IN, resp_inquiry, NULL, {6, 0xe3, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {0, 0xa0, 0, FF_RESPOND | F_D_IN, resp_report_luns, NULL, {12, 0xe3, 0xff, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, 0} }, {0, 0x3, 0, FF_RESPOND | F_D_IN, resp_requests, NULL, {6, 0xe1, 0, 0, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {0, 0x0, 0, F_M_ACCESS | F_RL_WLUN_OK, NULL, NULL,/* TEST UNIT READY */ {6, 0, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {1, 0x5a, 0, F_D_IN, resp_mode_sense, msense_iarr, {10, 0xf8, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, {1, 0x55, 0, F_D_OUT, resp_mode_select, mselect_iarr, {10, 0xf1, 0, 0, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, {0, 0x4d, 0, F_D_IN, resp_log_sense, NULL, {10, 0xe3, 0xff, 0xff, 0, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, {0, 0x25, 0, F_D_IN, resp_readcap, NULL, {10, 0xe1, 0xff, 0xff, 0xff, 0xff, 0, 0, 0x1, 0xc7, 0, 0, 0, 0, 0, 0} }, {3, 0x88, 0, F_D_IN | FF_DIRECT_IO, resp_read_dt0, read_iarr, {16, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* READ(16) */ /* 10 */ {3, 0x8a, 0, F_D_OUT | FF_DIRECT_IO, resp_write_dt0, write_iarr, {16, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x9f, 0xc7} }, /* WRITE(16) */ {0, 0x1b, 0, 0, resp_start_stop, NULL, /* START STOP UNIT */ {6, 0x1, 0, 0xf, 0xf7, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {1, 0x9e, 0x10, F_SA_LOW | F_D_IN, resp_readcap16, sa_in_iarr, {16, 0x10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1, 0xc7} }, /* READ CAPACITY(16) */ {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* SA OUT */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {2, 0xa3, 0xa, F_SA_LOW | F_D_IN, resp_report_tgtpgs, maint_in_iarr, {12, 0xea, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0, 0xc7, 0, 0, 0, 0} }, {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* MAINT OUT */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* VERIFY */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {1, 0x7f, 0x9, F_SA_HIGH | F_D_IN | FF_DIRECT_IO, resp_read_dt0, vl_iarr, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0x9, 0xfe, 0, 0xff, 0xff, 0xff, 0xff} },/* VARIABLE LENGTH, READ(32) */ {1, 0x56, 0, F_D_OUT, NULL, reserve_iarr, /* RESERVE(10) */ {10, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, {1, 0x57, 0, F_D_OUT, NULL, release_iarr, /* RELEASE(10) */ {10, 0x13, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, /* 20 */ {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ALLOW REMOVAL */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {0, 0x1, 0, 0, resp_start_stop, NULL, /* REWIND ?? */ {6, 0x1, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ATA_PT */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {0, 0x1d, F_D_OUT, 0, NULL, NULL, /* SEND DIAGNOSTIC */ {6, 0xf7, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, {0, 0x42, 0, F_D_OUT | FF_DIRECT_IO, resp_unmap, NULL, /* UNMAP */ {10, 0x1, 0, 0, 0, 0, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, {0, 0x53, 0, F_D_IN | F_D_OUT | FF_DIRECT_IO, resp_xdwriteread_10, NULL, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, {0, 0x3b, 0, F_D_OUT_MAYBE, resp_write_buffer, NULL, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, /* WRITE_BUFFER */ {1, 0x41, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, resp_write_same_10, write_same_iarr, {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, {0, 0x35, 0, F_DELAY_OVERR | FF_DIRECT_IO, NULL, NULL, /* SYNC_CACHE */ {10, 0x7, 0xff, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0, 0} }, {0, 0x89, 0, F_D_OUT | FF_DIRECT_IO, resp_comp_write, NULL, {16, 0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0xff, 0x1f, 0xc7} }, /* COMPARE AND WRITE */ /* 30 */ {0xff, 0, 0, 0, NULL, NULL, /* terminating element */ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} }, }; struct sdebug_scmd_extra_t { bool inj_recovered; bool inj_transport; bool inj_dif; bool inj_dix; bool inj_short; }; static int scsi_debug_add_host = DEF_NUM_HOST; static int scsi_debug_ato = DEF_ATO; static int scsi_debug_delay = DEF_DELAY; static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; static int scsi_debug_dif = DEF_DIF; static int scsi_debug_dix = DEF_DIX; static int scsi_debug_dsense = DEF_D_SENSE; static int scsi_debug_every_nth = DEF_EVERY_NTH; static int scsi_debug_fake_rw = DEF_FAKE_RW; static unsigned int scsi_debug_guard = DEF_GUARD; static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; static int scsi_debug_max_luns = DEF_MAX_LUNS; static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE; static atomic_t retired_max_queue; /* if > 0 then was prior max_queue */ static int scsi_debug_ndelay = DEF_NDELAY; static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; static int scsi_debug_no_uld = 0; static int scsi_debug_num_parts = DEF_NUM_PARTS; static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ static int scsi_debug_opt_blks = DEF_OPT_BLKS; static int scsi_debug_opts = DEF_OPTS; static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP; static int scsi_debug_ptype = DEF_PTYPE; /* SCSI peripheral type (0==disk) */ static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; static int scsi_debug_sector_size = DEF_SECTOR_SIZE; static int scsi_debug_virtual_gb = DEF_VIRTUAL_GB; static int scsi_debug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; static unsigned int scsi_debug_lbpu = DEF_LBPU; static unsigned int scsi_debug_lbpws = DEF_LBPWS; static unsigned int scsi_debug_lbpws10 = DEF_LBPWS10; static unsigned int scsi_debug_lbprz = DEF_LBPRZ; static unsigned int scsi_debug_unmap_alignment = DEF_UNMAP_ALIGNMENT; static unsigned int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY; static unsigned int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; static unsigned int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC; static unsigned int scsi_debug_write_same_length = DEF_WRITESAME_LENGTH; static bool scsi_debug_removable = DEF_REMOVABLE; static bool scsi_debug_clustering; static bool scsi_debug_host_lock = DEF_HOST_LOCK; static bool scsi_debug_strict = DEF_STRICT; static bool sdebug_any_injecting_opt; static atomic_t sdebug_cmnd_count; static atomic_t sdebug_completions; static atomic_t sdebug_a_tsf; /* counter of 'almost' TSFs */ #define DEV_READONLY(TGT) (0) static unsigned int sdebug_store_sectors; static sector_t sdebug_capacity; /* in sectors */ /* old BIOS stuff, kernel may get rid of them but some mode sense pages may still need them */ static int sdebug_heads; /* heads per disk */ static int sdebug_cylinders_per; /* cylinders per surface */ static int sdebug_sectors_per; /* sectors per cylinder */ #define SDEBUG_MAX_PARTS 4 #define SCSI_DEBUG_MAX_CMD_LEN 32 static unsigned int scsi_debug_lbp(void) { return ((0 == scsi_debug_fake_rw) && (scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10)); } struct sdebug_dev_info { struct list_head dev_list; unsigned int channel; unsigned int target; u64 lun; struct sdebug_host_info *sdbg_host; unsigned long uas_bm[1]; atomic_t num_in_q; char stopped; /* TODO: should be atomic */ bool used; }; struct sdebug_host_info { struct list_head host_list; struct Scsi_Host *shost; struct device dev; struct list_head dev_info_list; }; #define to_sdebug_host(d) \ container_of(d, struct sdebug_host_info, dev) static LIST_HEAD(sdebug_host_list); static DEFINE_SPINLOCK(sdebug_host_list_lock); struct sdebug_hrtimer { /* ... is derived from hrtimer */ struct hrtimer hrt; /* must be first element */ int qa_indx; }; struct sdebug_queued_cmd { /* in_use flagged by a bit in queued_in_use_bm[] */ struct timer_list *cmnd_timerp; struct tasklet_struct *tletp; struct sdebug_hrtimer *sd_hrtp; struct scsi_cmnd * a_cmnd; }; static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; static unsigned long queued_in_use_bm[SCSI_DEBUG_CANQUEUE_WORDS]; static unsigned char * fake_storep; /* ramdisk storage */ static struct sd_dif_tuple *dif_storep; /* protection info */ static void *map_storep; /* provisioning map */ static unsigned long map_size; static int num_aborts; static int num_dev_resets; static int num_target_resets; static int num_bus_resets; static int num_host_resets; static int dix_writes; static int dix_reads; static int dif_errors; static DEFINE_SPINLOCK(queued_arr_lock); static DEFINE_RWLOCK(atomic_rw); static char sdebug_proc_name[] = MY_NAME; static const char *my_name = MY_NAME; static struct bus_type pseudo_lld_bus; static struct device_driver sdebug_driverfs_driver = { .name = sdebug_proc_name, .bus = &pseudo_lld_bus, }; static const int check_condition_result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; static const int illegal_condition_result = (DRIVER_SENSE << 24) | (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; static const int device_qfull_result = (DID_OK << 16) | (COMMAND_COMPLETE << 8) | SAM_STAT_TASK_SET_FULL; static unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; static unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, 0, 0, 0x2, 0x4b}; static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x0}; static void *fake_store(unsigned long long lba) { lba = do_div(lba, sdebug_store_sectors); return fake_storep + lba * scsi_debug_sector_size; } static struct sd_dif_tuple *dif_store(sector_t sector) { sector = do_div(sector, sdebug_store_sectors); return dif_storep + sector; } static int sdebug_add_adapter(void); static void sdebug_remove_adapter(void); static void sdebug_max_tgts_luns(void) { struct sdebug_host_info *sdbg_host; struct Scsi_Host *hpnt; spin_lock(&sdebug_host_list_lock); list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { hpnt = sdbg_host->shost; if ((hpnt->this_id >= 0) && (scsi_debug_num_tgts > hpnt->this_id)) hpnt->max_id = scsi_debug_num_tgts + 1; else hpnt->max_id = scsi_debug_num_tgts; /* scsi_debug_max_luns; */ hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; } spin_unlock(&sdebug_host_list_lock); } enum sdeb_cmd_data {SDEB_IN_DATA = 0, SDEB_IN_CDB = 1}; /* Set in_bit to -1 to indicate no bit position of invalid field */ static void mk_sense_invalid_fld(struct scsi_cmnd *scp, enum sdeb_cmd_data c_d, int in_byte, int in_bit) { unsigned char *sbuff; u8 sks[4]; int sl, asc; sbuff = scp->sense_buffer; if (!sbuff) { sdev_printk(KERN_ERR, scp->device, "%s: sense_buffer is NULL\n", __func__); return; } asc = c_d ? INVALID_FIELD_IN_CDB : INVALID_FIELD_IN_PARAM_LIST; memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); scsi_build_sense_buffer(scsi_debug_dsense, sbuff, ILLEGAL_REQUEST, asc, 0); memset(sks, 0, sizeof(sks)); sks[0] = 0x80; if (c_d) sks[0] |= 0x40; if (in_bit >= 0) { sks[0] |= 0x8; sks[0] |= 0x7 & in_bit; } put_unaligned_be16(in_byte, sks + 1); if (scsi_debug_dsense) { sl = sbuff[7] + 8; sbuff[7] = sl; sbuff[sl] = 0x2; sbuff[sl + 1] = 0x6; memcpy(sbuff + sl + 4, sks, 3); } else memcpy(sbuff + 15, sks, 3); if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) sdev_printk(KERN_INFO, scp->device, "%s: [sense_key,asc,ascq" "]: [0x5,0x%x,0x0] %c byte=%d, bit=%d\n", my_name, asc, c_d ? 'C' : 'D', in_byte, in_bit); } static void mk_sense_buffer(struct scsi_cmnd *scp, int key, int asc, int asq) { unsigned char *sbuff; sbuff = scp->sense_buffer; if (!sbuff) { sdev_printk(KERN_ERR, scp->device, "%s: sense_buffer is NULL\n", __func__); return; } memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) sdev_printk(KERN_INFO, scp->device, "%s: [sense_key,asc,ascq]: [0x%x,0x%x,0x%x]\n", my_name, key, asc, asq); } static void mk_sense_invalid_opcode(struct scsi_cmnd *scp) { mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_OPCODE, 0); } static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) { if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { if (0x1261 == cmd) sdev_printk(KERN_INFO, dev, "%s: BLKFLSBUF [0x1261]\n", __func__); else if (0x5331 == cmd) sdev_printk(KERN_INFO, dev, "%s: CDROM_GET_CAPABILITY [0x5331]\n", __func__); else sdev_printk(KERN_INFO, dev, "%s: cmd=0x%x\n", __func__, cmd); } return -EINVAL; /* return -ENOTTY; // correct return but upsets fdisk */ } static void clear_luns_changed_on_target(struct sdebug_dev_info *devip) { struct sdebug_host_info *sdhp; struct sdebug_dev_info *dp; spin_lock(&sdebug_host_list_lock); list_for_each_entry(sdhp, &sdebug_host_list, host_list) { list_for_each_entry(dp, &sdhp->dev_info_list, dev_list) { if ((devip->sdbg_host == dp->sdbg_host) && (devip->target == dp->target)) clear_bit(SDEBUG_UA_LUNS_CHANGED, dp->uas_bm); } } spin_unlock(&sdebug_host_list_lock); } static int check_readiness(struct scsi_cmnd *SCpnt, int uas_only, struct sdebug_dev_info * devip) { int k; bool debug = !!(SCSI_DEBUG_OPT_NOISE & scsi_debug_opts); k = find_first_bit(devip->uas_bm, SDEBUG_NUM_UAS); if (k != SDEBUG_NUM_UAS) { const char *cp = NULL; switch (k) { case SDEBUG_UA_POR: mk_sense_buffer(SCpnt, UNIT_ATTENTION, UA_RESET_ASC, POWER_ON_RESET_ASCQ); if (debug) cp = "power on reset"; break; case SDEBUG_UA_BUS_RESET: mk_sense_buffer(SCpnt, UNIT_ATTENTION, UA_RESET_ASC, BUS_RESET_ASCQ); if (debug) cp = "bus reset"; break; case SDEBUG_UA_MODE_CHANGED: mk_sense_buffer(SCpnt, UNIT_ATTENTION, UA_CHANGED_ASC, MODE_CHANGED_ASCQ); if (debug) cp = "mode parameters changed"; break; case SDEBUG_UA_CAPACITY_CHANGED: mk_sense_buffer(SCpnt, UNIT_ATTENTION, UA_CHANGED_ASC, CAPACITY_CHANGED_ASCQ); if (debug) cp = "capacity data changed"; break; case SDEBUG_UA_MICROCODE_CHANGED: mk_sense_buffer(SCpnt, UNIT_ATTENTION, TARGET_CHANGED_ASC, MICROCODE_CHANGED_ASCQ); if (debug) cp = "microcode has been changed"; break; case SDEBUG_UA_MICROCODE_CHANGED_WO_RESET: mk_sense_buffer(SCpnt, UNIT_ATTENTION, TARGET_CHANGED_ASC, MICROCODE_CHANGED_WO_RESET_ASCQ); if (debug) cp = "microcode has been changed without reset"; break; case SDEBUG_UA_LUNS_CHANGED: /* * SPC-3 behavior is to report a UNIT ATTENTION with * ASC/ASCQ REPORTED LUNS DATA HAS CHANGED on every LUN * on the target, until a REPORT LUNS command is * received. SPC-4 behavior is to report it only once. * NOTE: scsi_debug_scsi_level does not use the same * values as struct scsi_device->scsi_level. */ if (scsi_debug_scsi_level >= 6) /* SPC-4 and above */ clear_luns_changed_on_target(devip); mk_sense_buffer(SCpnt, UNIT_ATTENTION, TARGET_CHANGED_ASC, LUNS_CHANGED_ASCQ); if (debug) cp = "reported luns data has changed"; break; default: pr_warn("%s: unexpected unit attention code=%d\n", __func__, k); if (debug) cp = "unknown"; break; } clear_bit(k, devip->uas_bm); if (debug) sdev_printk(KERN_INFO, SCpnt->device, "%s reports: Unit attention: %s\n", my_name, cp); return check_condition_result; } if ((UAS_TUR == uas_only) && devip->stopped) { mk_sense_buffer(SCpnt, NOT_READY, LOGICAL_UNIT_NOT_READY, 0x2); if (debug) sdev_printk(KERN_INFO, SCpnt->device, "%s reports: Not ready: %s\n", my_name, "initializing command required"); return check_condition_result; } return 0; } /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, int arr_len) { int act_len; struct scsi_data_buffer *sdb = scsi_in(scp); if (!sdb->length) return 0; if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) return (DID_ERROR << 16); act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, arr, arr_len); sdb->resid = scsi_bufflen(scp) - act_len; return 0; } /* Returns number of bytes fetched into 'arr' or -1 if error. */ static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, int arr_len) { if (!scsi_bufflen(scp)) return 0; if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) return -1; return scsi_sg_copy_to_buffer(scp, arr, arr_len); } static const char * inq_vendor_id = "Linux "; static const char * inq_product_id = "scsi_debug "; static const char *inq_product_rev = "0184"; /* version less '.' */ /* Device identification VPD page. Returns number of bytes placed in arr */ static int inquiry_evpd_83(unsigned char * arr, int port_group_id, int target_dev_id, int dev_id_num, const char * dev_id_str, int dev_id_str_len) { int num, port_a; char b[32]; port_a = target_dev_id + 1; /* T10 vendor identifier field format (faked) */ arr[0] = 0x2; /* ASCII */ arr[1] = 0x1; arr[2] = 0x0; memcpy(&arr[4], inq_vendor_id, 8); memcpy(&arr[12], inq_product_id, 16); memcpy(&arr[28], dev_id_str, dev_id_str_len); num = 8 + 16 + dev_id_str_len; arr[3] = num; num += 4; if (dev_id_num >= 0) { /* NAA-5, Logical unit identifier (binary) */ arr[num++] = 0x1; /* binary (not necessarily sas) */ arr[num++] = 0x3; /* PIV=0, lu, naa */ arr[num++] = 0x0; arr[num++] = 0x8; arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ arr[num++] = 0x33; arr[num++] = 0x33; arr[num++] = 0x30; arr[num++] = (dev_id_num >> 24); arr[num++] = (dev_id_num >> 16) & 0xff; arr[num++] = (dev_id_num >> 8) & 0xff; arr[num++] = dev_id_num & 0xff; /* Target relative port number */ arr[num++] = 0x61; /* proto=sas, binary */ arr[num++] = 0x94; /* PIV=1, target port, rel port */ arr[num++] = 0x0; /* reserved */ arr[num++] = 0x4; /* length */ arr[num++] = 0x0; /* reserved */ arr[num++] = 0x0; /* reserved */ arr[num++] = 0x0; arr[num++] = 0x1; /* relative port A */ } /* NAA-5, Target port identifier */ arr[num++] = 0x61; /* proto=sas, binary */ arr[num++] = 0x93; /* piv=1, target port, naa */ arr[num++] = 0x0; arr[num++] = 0x8; arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ arr[num++] = 0x22; arr[num++] = 0x22; arr[num++] = 0x20; arr[num++] = (port_a >> 24); arr[num++] = (port_a >> 16) & 0xff; arr[num++] = (port_a >> 8) & 0xff; arr[num++] = port_a & 0xff; /* NAA-5, Target port group identifier */ arr[num++] = 0x61; /* proto=sas, binary */ arr[num++] = 0x95; /* piv=1, target port group id */ arr[num++] = 0x0; arr[num++] = 0x4; arr[num++] = 0; arr[num++] = 0; arr[num++] = (port_group_id >> 8) & 0xff; arr[num++] = port_group_id & 0xff; /* NAA-5, Target device identifier */ arr[num++] = 0x61; /* proto=sas, binary */ arr[num++] = 0xa3; /* piv=1, target device, naa */ arr[num++] = 0x0; arr[num++] = 0x8; arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ arr[num++] = 0x22; arr[num++] = 0x22; arr[num++] = 0x20; arr[num++] = (target_dev_id >> 24); arr[num++] = (target_dev_id >> 16) & 0xff; arr[num++] = (target_dev_id >> 8) & 0xff; arr[num++] = target_dev_id & 0xff; /* SCSI name string: Target device identifier */ arr[num++] = 0x63; /* proto=sas, UTF-8 */ arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ arr[num++] = 0x0; arr[num++] = 24; memcpy(arr + num, "naa.52222220", 12); num += 12; snprintf(b, sizeof(b), "%08X", target_dev_id); memcpy(arr + num, b, 8); num += 8; memset(arr + num, 0, 4); num += 4; return num; } static unsigned char vpd84_data[] = { /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, 0x22,0x22,0x22,0x0,0xbb,0x1, 0x22,0x22,0x22,0x0,0xbb,0x2, }; /* Software interface identification VPD page */ static int inquiry_evpd_84(unsigned char * arr) { memcpy(arr, vpd84_data, sizeof(vpd84_data)); return sizeof(vpd84_data); } /* Management network addresses VPD page */ static int inquiry_evpd_85(unsigned char * arr) { int num = 0; const char * na1 = "https://www.kernel.org/config"; const char * na2 = "http://www.kernel.org/log"; int plen, olen; arr[num++] = 0x1; /* lu, storage config */ arr[num++] = 0x0; /* reserved */ arr[num++] = 0x0; olen = strlen(na1); plen = olen + 1; if (plen % 4) plen = ((plen / 4) + 1) * 4; arr[num++] = plen; /* length, null termianted, padded */ memcpy(arr + num, na1, olen); memset(arr + num + olen, 0, plen - olen); num += plen; arr[num++] = 0x4; /* lu, logging */ arr[num++] = 0x0; /* reserved */ arr[num++] = 0x0; olen = strlen(na2); plen = olen + 1; if (plen % 4) plen = ((plen / 4) + 1) * 4; arr[num++] = plen; /* length, null terminated, padded */ memcpy(arr + num, na2, olen); memset(arr + num + olen, 0, plen - olen); num += plen; return num; } /* SCSI ports VPD page */ static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) { int num = 0; int port_a, port_b; port_a = target_dev_id + 1; port_b = port_a + 1; arr[num++] = 0x0; /* reserved */ arr[num++] = 0x0; /* reserved */ arr[num++] = 0x0; arr[num++] = 0x1; /* relative port 1 (primary) */ memset(arr + num, 0, 6); num += 6; arr[num++] = 0x0; arr[num++] = 12; /* length tp descriptor */ /* naa-5 target port identifier (A) */ arr[num++] = 0x61; /* proto=sas, binary */ arr[num++] = 0x93; /* PIV=1, target port, NAA */ arr[num++] = 0x0; /* reserved */ arr[num++] = 0x8; /* length */ arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ arr[num++] = 0x22; arr[num++] = 0x22; arr[num++] = 0x20; arr[num++] = (port_a >> 24); arr[num++] = (port_a >> 16) & 0xff; arr[num++] = (port_a >> 8) & 0xff; arr[num++] = port_a & 0xff; arr[num++] = 0x0; /* reserved */ arr[num++] = 0x0; /* reserved */ arr[num++] = 0x0; arr[num++] = 0x2; /* relative port 2 (secondary) */ memset(arr + num, 0, 6); num += 6; arr[num++] = 0x0; arr[num++] = 12; /* length tp descriptor */ /* naa-5 target port identifier (B) */ arr[num++] = 0x61; /* proto=sas, binary */ arr[num++] = 0x93; /* PIV=1, target port, NAA */ arr[num++] = 0x0; /* reserved */ arr[num++] = 0x8; /* length */ arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ arr[num++] = 0x22; arr[num++] = 0x22; arr[num++] = 0x20; arr[num++] = (port_b >> 24); arr[num++] = (port_b >> 16) & 0xff; arr[num++] = (port_b >> 8) & 0xff; arr[num++] = port_b & 0xff; return num; } static unsigned char vpd89_data[] = { /* from 4th byte */ 0,0,0,0, 'l','i','n','u','x',' ',' ',' ', 'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', '1','2','3','4', 0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, 0xec,0,0,0, 0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, 0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, 0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, 0x53,0x41, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, 0x20,0x20, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, 0x10,0x80, 0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, 0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, 0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, 0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, 0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, 0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, 0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, 0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, 0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, }; /* ATA Information VPD page */ static int inquiry_evpd_89(unsigned char * arr) { memcpy(arr, vpd89_data, sizeof(vpd89_data)); return sizeof(vpd89_data); } static unsigned char vpdb0_data[] = { /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, }; /* Block limits VPD page (SBC-3) */ static int inquiry_evpd_b0(unsigned char * arr) { unsigned int gran; memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); /* Optimal transfer length granularity */ gran = 1 << scsi_debug_physblk_exp; arr[2] = (gran >> 8) & 0xff; arr[3] = gran & 0xff; /* Maximum Transfer Length */ if (sdebug_store_sectors > 0x400) { arr[4] = (sdebug_store_sectors >> 24) & 0xff; arr[5] = (sdebug_store_sectors >> 16) & 0xff; arr[6] = (sdebug_store_sectors >> 8) & 0xff; arr[7] = sdebug_store_sectors & 0xff; } /* Optimal Transfer Length */ put_unaligned_be32(scsi_debug_opt_blks, &arr[8]); if (scsi_debug_lbpu) { /* Maximum Unmap LBA Count */ put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]); /* Maximum Unmap Block Descriptor Count */ put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]); } /* Unmap Granularity Alignment */ if (scsi_debug_unmap_alignment) { put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]); arr[28] |= 0x80; /* UGAVALID */ } /* Optimal Unmap Granularity */ put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]); /* Maximum WRITE SAME Length */ put_unaligned_be64(scsi_debug_write_same_length, &arr[32]); return 0x3c; /* Mandatory page length for Logical Block Provisioning */ return sizeof(vpdb0_data); } /* Block device characteristics VPD page (SBC-3) */ static int inquiry_evpd_b1(unsigned char *arr) { memset(arr, 0, 0x3c); arr[0] = 0; arr[1] = 1; /* non rotating medium (e.g. solid state) */ arr[2] = 0; arr[3] = 5; /* less than 1.8" */ return 0x3c; } /* Logical block provisioning VPD page (SBC-3) */ static int inquiry_evpd_b2(unsigned char *arr) { memset(arr, 0, 0x4); arr[0] = 0; /* threshold exponent */ if (scsi_debug_lbpu) arr[1] = 1 << 7; if (scsi_debug_lbpws) arr[1] |= 1 << 6; if (scsi_debug_lbpws10) arr[1] |= 1 << 5; if (scsi_debug_lbprz) arr[1] |= 1 << 2; return 0x4; } #define SDEBUG_LONG_INQ_SZ 96 #define SDEBUG_MAX_INQ_ARR_SZ 584 static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) { unsigned char pq_pdt; unsigned char * arr; unsigned char *cmd = scp->cmnd; int alloc_len, n, ret; bool have_wlun; alloc_len = (cmd[3] << 8) + cmd[4]; arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); if (! arr) return DID_REQUEUE << 16; have_wlun = (scp->device->lun == SAM2_WLUN_REPORT_LUNS); if (have_wlun) pq_pdt = 0x1e; /* present, wlun */ else if (scsi_debug_no_lun_0 && (0 == devip->lun)) pq_pdt = 0x7f; /* not present, no device type */ else pq_pdt = (scsi_debug_ptype & 0x1f); arr[0] = pq_pdt; if (0x2 & cmd[1]) { /* CMDDT bit set */ mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, 1); kfree(arr); return check_condition_result; } else if (0x1 & cmd[1]) { /* EVPD bit set */ int lu_id_num, port_group_id, target_dev_id, len; char lu_id_str[6]; int host_no = devip->sdbg_host->shost->host_no; port_group_id = (((host_no + 1) & 0x7f) << 8) + (devip->channel & 0x7f); if (0 == scsi_debug_vpd_use_hostno) host_no = 0; lu_id_num = have_wlun ? -1 : (((host_no + 1) * 2000) + (devip->target * 1000) + devip->lun); target_dev_id = ((host_no + 1) * 2000) + (devip->target * 1000) - 3; len = scnprintf(lu_id_str, 6, "%d", lu_id_num); if (0 == cmd[2]) { /* supported vital product data pages */ arr[1] = cmd[2]; /*sanity */ n = 4; arr[n++] = 0x0; /* this page */ arr[n++] = 0x80; /* unit serial number */ arr[n++] = 0x83; /* device identification */ arr[n++] = 0x84; /* software interface ident. */ arr[n++] = 0x85; /* management network addresses */ arr[n++] = 0x86; /* extended inquiry */ arr[n++] = 0x87; /* mode page policy */ arr[n++] = 0x88; /* SCSI ports */ arr[n++] = 0x89; /* ATA information */ arr[n++] = 0xb0; /* Block limits (SBC) */ arr[n++] = 0xb1; /* Block characteristics (SBC) */ if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */ arr[n++] = 0xb2; arr[3] = n - 4; /* number of supported VPD pages */ } else if (0x80 == cmd[2]) { /* unit serial number */ arr[1] = cmd[2]; /*sanity */ arr[3] = len; memcpy(&arr[4], lu_id_str, len); } else if (0x83 == cmd[2]) { /* device identification */ arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_evpd_83(&arr[4], port_group_id, target_dev_id, lu_id_num, lu_id_str, len); } else if (0x84 == cmd[2]) { /* Software interface ident. */ arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_evpd_84(&arr[4]); } else if (0x85 == cmd[2]) { /* Management network addresses */ arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_evpd_85(&arr[4]); } else if (0x86 == cmd[2]) { /* extended inquiry */ arr[1] = cmd[2]; /*sanity */ arr[3] = 0x3c; /* number of following entries */ if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) arr[4] = 0x4; /* SPT: GRD_CHK:1 */ else if (scsi_debug_dif) arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ else arr[4] = 0x0; /* no protection stuff */ arr[5] = 0x7; /* head of q, ordered + simple q's */ } else if (0x87 == cmd[2]) { /* mode page policy */ arr[1] = cmd[2]; /*sanity */ arr[3] = 0x8; /* number of following entries */ arr[4] = 0x2; /* disconnect-reconnect mp */ arr[6] = 0x80; /* mlus, shared */ arr[8] = 0x18; /* protocol specific lu */ arr[10] = 0x82; /* mlus, per initiator port */ } else if (0x88 == cmd[2]) { /* SCSI Ports */ arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); } else if (0x89 == cmd[2]) { /* ATA information */ arr[1] = cmd[2]; /*sanity */ n = inquiry_evpd_89(&arr[4]); arr[2] = (n >> 8); arr[3] = (n & 0xff); } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_evpd_b0(&arr[4]); } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_evpd_b1(&arr[4]); } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */ arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_evpd_b2(&arr[4]); } else { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); kfree(arr); return check_condition_result; } len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); ret = fill_from_dev_buffer(scp, arr, min(len, SDEBUG_MAX_INQ_ARR_SZ)); kfree(arr); return ret; } /* drops through here for a standard inquiry */ arr[1] = scsi_debug_removable ? 0x80 : 0; /* Removable disk */ arr[2] = scsi_debug_scsi_level; arr[3] = 2; /* response_data_format==2 */ arr[4] = SDEBUG_LONG_INQ_SZ - 5; arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ if (0 == scsi_debug_vpd_use_hostno) arr[5] = 0x10; /* claim: implicit TGPS */ arr[6] = 0x10; /* claim: MultiP */ /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ arr[7] = 0xa; /* claim: LINKED + CMDQUE */ memcpy(&arr[8], inq_vendor_id, 8); memcpy(&arr[16], inq_product_id, 16); memcpy(&arr[32], inq_product_rev, 4); /* version descriptors (2 bytes each) follow */ arr[58] = 0x0; arr[59] = 0xa2; /* SAM-5 rev 4 */ arr[60] = 0x4; arr[61] = 0x68; /* SPC-4 rev 37 */ n = 62; if (scsi_debug_ptype == 0) { arr[n++] = 0x4; arr[n++] = 0xc5; /* SBC-4 rev 36 */ } else if (scsi_debug_ptype == 1) { arr[n++] = 0x5; arr[n++] = 0x25; /* SSC-4 rev 3 */ } arr[n++] = 0x20; arr[n++] = 0xe6; /* SPL-3 rev 7 */ ret = fill_from_dev_buffer(scp, arr, min(alloc_len, SDEBUG_LONG_INQ_SZ)); kfree(arr); return ret; } static int resp_requests(struct scsi_cmnd * scp, struct sdebug_dev_info * devip) { unsigned char * sbuff; unsigned char *cmd = scp->cmnd; unsigned char arr[SCSI_SENSE_BUFFERSIZE]; bool dsense, want_dsense; int len = 18; memset(arr, 0, sizeof(arr)); dsense = !!(cmd[1] & 1); want_dsense = dsense || scsi_debug_dsense; sbuff = scp->sense_buffer; if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { if (dsense) { arr[0] = 0x72; arr[1] = 0x0; /* NO_SENSE in sense_key */ arr[2] = THRESHOLD_EXCEEDED; arr[3] = 0xff; /* TEST set and MRIE==6 */ len = 8; } else { arr[0] = 0x70; arr[2] = 0x0; /* NO_SENSE in sense_key */ arr[7] = 0xa; /* 18 byte sense buffer */ arr[12] = THRESHOLD_EXCEEDED; arr[13] = 0xff; /* TEST set and MRIE==6 */ } } else { memcpy(arr, sbuff, SCSI_SENSE_BUFFERSIZE); if (arr[0] >= 0x70 && dsense == scsi_debug_dsense) ; /* have sense and formats match */ else if (arr[0] <= 0x70) { if (dsense) { memset(arr, 0, 8); arr[0] = 0x72; len = 8; } else { memset(arr, 0, 18); arr[0] = 0x70; arr[7] = 0xa; } } else if (dsense) { memset(arr, 0, 8); arr[0] = 0x72; arr[1] = sbuff[2]; /* sense key */ arr[2] = sbuff[12]; /* asc */ arr[3] = sbuff[13]; /* ascq */ len = 8; } else { memset(arr, 0, 18); arr[0] = 0x70; arr[2] = sbuff[1]; arr[7] = 0xa; arr[12] = sbuff[1]; arr[13] = sbuff[3]; } } mk_sense_buffer(scp, 0, NO_ADDITIONAL_SENSE, 0); return fill_from_dev_buffer(scp, arr, len); } static int resp_start_stop(struct scsi_cmnd * scp, struct sdebug_dev_info * devip) { unsigned char *cmd = scp->cmnd; int power_cond, start; power_cond = (cmd[4] & 0xf0) >> 4; if (power_cond) { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, 7); return check_condition_result; } start = cmd[4] & 1; if (start == devip->stopped) devip->stopped = !start; return 0; } static sector_t get_sdebug_capacity(void) { if (scsi_debug_virtual_gb > 0) return (sector_t)scsi_debug_virtual_gb * (1073741824 / scsi_debug_sector_size); else return sdebug_store_sectors; } #define SDEBUG_READCAP_ARR_SZ 8 static int resp_readcap(struct scsi_cmnd * scp, struct sdebug_dev_info * devip) { unsigned char arr[SDEBUG_READCAP_ARR_SZ]; unsigned int capac; /* following just in case virtual_gb changed */ sdebug_capacity = get_sdebug_capacity(); memset(arr, 0, SDEBUG_READCAP_ARR_SZ); if (sdebug_capacity < 0xffffffff) { capac = (unsigned int)sdebug_capacity - 1; arr[0] = (capac >> 24); arr[1] = (capac >> 16) & 0xff; arr[2] = (capac >> 8) & 0xff; arr[3] = capac & 0xff; } else { arr[0] = 0xff; arr[1] = 0xff; arr[2] = 0xff; arr[3] = 0xff; } arr[6] = (scsi_debug_sector_size >> 8) & 0xff; arr[7] = scsi_debug_sector_size & 0xff; return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); } #define SDEBUG_READCAP16_ARR_SZ 32 static int resp_readcap16(struct scsi_cmnd * scp, struct sdebug_dev_info * devip) { unsigned char *cmd = scp->cmnd; unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; unsigned long long capac; int k, alloc_len; alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) + cmd[13]); /* following just in case virtual_gb changed */ sdebug_capacity = get_sdebug_capacity(); memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); capac = sdebug_capacity - 1; for (k = 0; k < 8; ++k, capac >>= 8) arr[7 - k] = capac & 0xff; arr[8] = (scsi_debug_sector_size >> 24) & 0xff; arr[9] = (scsi_debug_sector_size >> 16) & 0xff; arr[10] = (scsi_debug_sector_size >> 8) & 0xff; arr[11] = scsi_debug_sector_size & 0xff; arr[13] = scsi_debug_physblk_exp & 0xf; arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f; if (scsi_debug_lbp()) { arr[14] |= 0x80; /* LBPME */ if (scsi_debug_lbprz) arr[14] |= 0x40; /* LBPRZ */ } arr[15] = scsi_debug_lowest_aligned & 0xff; if (scsi_debug_dif) { arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ arr[12] |= 1; /* PROT_EN */ } return fill_from_dev_buffer(scp, arr, min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); } #define SDEBUG_MAX_TGTPGS_ARR_SZ 1412 static int resp_report_tgtpgs(struct scsi_cmnd * scp, struct sdebug_dev_info * devip) { unsigned char *cmd = scp->cmnd; unsigned char * arr; int host_no = devip->sdbg_host->shost->host_no; int n, ret, alen, rlen; int port_group_a, port_group_b, port_a, port_b; alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8) + cmd[9]); arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC); if (! arr) return DID_REQUEUE << 16; /* * EVPD page 0x88 states we have two ports, one * real and a fake port with no device connected. * So we create two port groups with one port each * and set the group with port B to unavailable. */ port_a = 0x1; /* relative port A */ port_b = 0x2; /* relative port B */ port_group_a = (((host_no + 1) & 0x7f) << 8) + (devip->channel & 0x7f); port_group_b = (((host_no + 1) & 0x7f) << 8) + (devip->channel & 0x7f) + 0x80; /* * The asymmetric access state is cycled according to the host_id. */ n = 4; if (0 == scsi_debug_vpd_use_hostno) { arr[n++] = host_no % 3; /* Asymm access state */ arr[n++] = 0x0F; /* claim: all states are supported */ } else { arr[n++] = 0x0; /* Active/Optimized path */ arr[n++] = 0x01; /* claim: only support active/optimized paths */ } arr[n++] = (port_group_a >> 8) & 0xff; arr[n++] = port_group_a & 0xff; arr[n++] = 0; /* Reserved */ arr[n++] = 0; /* Status code */ arr[n++] = 0; /* Vendor unique */ arr[n++] = 0x1; /* One port per group */ arr[n++] = 0; /* Reserved */ arr[n++] = 0; /* Reserved */ arr[n++] = (port_a >> 8) & 0xff; arr[n++] = port_a & 0xff; arr[n++] = 3; /* Port unavailable */ arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ arr[n++] = (port_group_b >> 8) & 0xff; arr[n++] = port_group_b & 0xff; arr[n++] = 0; /* Reserved */ arr[n++] = 0; /* Status code */ arr[n++] = 0; /* Vendor unique */ arr[n++] = 0x1; /* One port per group */ arr[n++] = 0; /* Reserved */ arr[n++] = 0; /* Reserved */ arr[n++] = (port_b >> 8) & 0xff; arr[n++] = port_b & 0xff; rlen = n - 4; arr[0] = (rlen >> 24) & 0xff; arr[1] = (rlen >> 16) & 0xff; arr[2] = (rlen >> 8) & 0xff; arr[3] = rlen & 0xff; /* * Return the smallest value of either * - The allocated length * - The constructed command length * - The maximum array size */ rlen = min(alen,n); ret = fill_from_dev_buffer(scp, arr, min(rlen, SDEBUG_MAX_TGTPGS_ARR_SZ)); kfree(arr); return ret; } static int resp_rsup_opcodes(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) { bool rctd; u8 reporting_opts, req_opcode, sdeb_i, supp; u16 req_sa, u; u32 alloc_len, a_len; int k, offset, len, errsts, count, bump, na; const struct opcode_info_t *oip; const struct opcode_info_t *r_oip; u8 *arr; u8 *cmd = scp->cmnd; rctd = !!(cmd[2] & 0x80); reporting_opts = cmd[2] & 0x7; req_opcode = cmd[3]; req_sa = get_unaligned_be16(cmd + 4); alloc_len = get_unaligned_be32(cmd + 6); if (alloc_len < 4 || alloc_len > 0xffff) { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); return check_condition_result; } if (alloc_len > 8192) a_len = 8192; else a_len = alloc_len; arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_ATOMIC); if (NULL == arr) { mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, INSUFF_RES_ASCQ); return check_condition_result; } switch (reporting_opts) { case 0: /* all commands */ /* count number of commands */ for (count = 0, oip = opcode_info_arr; oip->num_attached != 0xff; ++oip) { if (F_INV_OP & oip->flags) continue; count += (oip->num_attached + 1); } bump = rctd ? 20 : 8; put_unaligned_be32(count * bump, arr); for (offset = 4, oip = opcode_info_arr; oip->num_attached != 0xff && offset < a_len; ++oip) { if (F_INV_OP & oip->flags) continue; na = oip->num_attached; arr[offset] = oip->opcode; put_unaligned_be16(oip->sa, arr + offset + 2); if (rctd) arr[offset + 5] |= 0x2; if (FF_SA & oip->flags) arr[offset + 5] |= 0x1; put_unaligned_be16(oip->len_mask[0], arr + offset + 6); if (rctd) put_unaligned_be16(0xa, arr + offset + 8); r_oip = oip; for (k = 0, oip = oip->arrp; k < na; ++k, ++oip) { if (F_INV_OP & oip->flags) continue; offset += bump; arr[offset] = oip->opcode; put_unaligned_be16(oip->sa, arr + offset + 2); if (rctd) arr[offset + 5] |= 0x2; if (FF_SA & oip->flags) arr[offset + 5] |= 0x1; put_unaligned_be16(oip->len_mask[0], arr + offset + 6); if (rctd) put_unaligned_be16(0xa, arr + offset + 8); } oip = r_oip; offset += bump; } break; case 1: /* one command: opcode only */ case 2: /* one command: opcode plus service action */ case 3: /* one command: if sa==0 then opcode only else opcode+sa */ sdeb_i = opcode_ind_arr[req_opcode]; oip = &opcode_info_arr[sdeb_i]; if (F_INV_OP & oip->flags) { supp = 1; offset = 4; } else { if (1 == reporting_opts) { if (FF_SA & oip->flags) { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 2); kfree(arr); return check_condition_result; } req_sa = 0; } else if (2 == reporting_opts && 0 == (FF_SA & oip->flags)) { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, -1); kfree(arr); /* point at requested sa */ return check_condition_result; } if (0 == (FF_SA & oip->flags) && req_opcode == oip->opcode) supp = 3; else if (0 == (FF_SA & oip->flags)) { na = oip->num_attached; for (k = 0, oip = oip->arrp; k < na; ++k, ++oip) { if (req_opcode == oip->opcode) break; } supp = (k >= na) ? 1 : 3; } else if (req_sa != oip->sa) { na = oip->num_attached; for (k = 0, oip = oip->arrp; k < na; ++k, ++oip) { if (req_sa == oip->sa) break; } supp = (k >= na) ? 1 : 3; } else supp = 3; if (3 == supp) { u = oip->len_mask[0]; put_unaligned_be16(u, arr + 2); arr[4] = oip->opcode; for (k = 1; k < u; ++k) arr[4 + k] = (k < 16) ? oip->len_mask[k] : 0xff; offset = 4 + u; } else offset = 4; } arr[1] = (rctd ? 0x80 : 0) | supp; if (rctd) { put_unaligned_be16(0xa, arr + offset); offset += 12; } break; default: mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 2); kfree(arr); return check_condition_result; } offset = (offset < a_len) ? offset : a_len; len = (offset < alloc_len) ? offset : alloc_len; errsts = fill_from_dev_buffer(scp, arr, len); kfree(arr); return errsts; } static int resp_rsup_tmfs(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) { bool repd; u32 alloc_len, len; u8 arr[16]; u8 *cmd = scp->cmnd; memset(arr, 0, sizeof(arr)); repd = !!(cmd[2] & 0x80); alloc_len = get_unaligned_be32(cmd + 6); if (alloc_len < 4) { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); return check_condition_result; } arr[0] = 0xc8; /* ATS | ATSS | LURS */ arr[1] = 0x1; /* ITNRS */ if (repd) { arr[3] = 0xc; len = 16; } else len = 4; len = (len < alloc_len) ? len : alloc_len; return fill_from_dev_buffer(scp, arr, len); } /* <> */ static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) { /* Read-Write Error Recovery page for mode_sense */ unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, 5, 0, 0xff, 0xff}; memcpy(p, err_recov_pg, sizeof(err_recov_pg)); if (1 == pcontrol) memset(p + 2, 0, sizeof(err_recov_pg) - 2); return sizeof(err_recov_pg); } static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) { /* Disconnect-Reconnect page for mode_sense */ unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; memcpy(p, disconnect_pg, sizeof(disconnect_pg)); if (1 == pcontrol) memset(p + 2, 0, sizeof(disconnect_pg) - 2); return sizeof(disconnect_pg); } static int resp_format_pg(unsigned char * p, int pcontrol, int target) { /* Format device page for mode_sense */ unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x40, 0, 0, 0}; memcpy(p, format_pg, sizeof(format_pg)); p[10] = (sdebug_sectors_per >> 8) & 0xff; p[11] = sdebug_sectors_per & 0xff; p[12] = (scsi_debug_sector_size >> 8) & 0xff; p[13] = scsi_debug_sector_size & 0xff; if (scsi_debug_removable) p[20] |= 0x20; /* should agree with INQUIRY */ if (1 == pcontrol) memset(p + 2, 0, sizeof(format_pg) - 2); return sizeof(format_pg); } static int resp_caching_pg(unsigned char * p, int pcontrol, int target) { /* Caching page for mode_sense */ unsigned char ch_caching_pg[] = {/* 0x8, 18, */ 0x4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; unsigned char d_caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; if (SCSI_DEBUG_OPT_N_WCE & scsi_debug_opts) caching_pg[2] &= ~0x4; /* set WCE=0 (default WCE=1) */ memcpy(p, caching_pg, sizeof(caching_pg)); if (1 == pcontrol) memcpy(p + 2, ch_caching_pg, sizeof(ch_caching_pg)); else if (2 == pcontrol) memcpy(p, d_caching_pg, sizeof(d_caching_pg)); return sizeof(caching_pg); } static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) { /* Control mode page for mode_sense */ unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, 0, 0, 0, 0}; unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, 0, 0, 0x2, 0x4b}; if (scsi_debug_dsense) ctrl_m_pg[2] |= 0x4; else ctrl_m_pg[2] &= ~0x4; if (scsi_debug_ato) ctrl_m_pg[5] |= 0x80; /* ATO=1 */ memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); if (1 == pcontrol) memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); else if (2 == pcontrol) memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); return sizeof(ctrl_m_pg); } static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) { /* Informational Exceptions control mode page for mode_sense */ unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, 0, 0, 0x0, 0x0}; unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x0}; memcpy(p, iec_m_pg, sizeof(iec_m_pg)); if (1 == pcontrol) memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); else if (2 == pcontrol) memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); return sizeof(iec_m_pg); } static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) { /* SAS SSP mode page - short format for mode_sense */ unsigned char sas_sf_m_pg[] = {0x19, 0x6, 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); if (1 == pcontrol) memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); return sizeof(sas_sf_m_pg); } static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, int target_dev_id) { /* SAS phy control and discover mode page for mode_sense */ unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, 0x2, 0, 0, 0, 0, 0, 0, 0, 0x88, 0x99, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, 0x3, 0, 0, 0, 0, 0, 0, 0, 0x88, 0x99, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; int port_a, port_b; port_a = target_dev_id + 1; port_b = port_a + 1; memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); p[20] = (port_a >> 24); p[21] = (port_a >> 16) & 0xff; p[22] = (port_a >> 8) & 0xff; p[23] = port_a & 0xff; p[48 + 20] = (port_b >> 24); p[48 + 21] = (port_b >> 16) & 0xff; p[48 + 22] = (port_b >> 8) & 0xff; p[48