| /* |
| * 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 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| * |
| * Copyright (C) 2001 - 2016 Douglas Gilbert |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2, or (at your option) |
| * any later version. |
| * |
| * For documentation see http://sg.danny.cz/sg/sdebug26.html |
| * |
| */ |
| |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ |
| |
| #include <linux/module.h> |
| |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/jiffies.h> |
| #include <linux/slab.h> |
| #include <linux/types.h> |
| #include <linux/string.h> |
| #include <linux/genhd.h> |
| #include <linux/fs.h> |
| #include <linux/init.h> |
| #include <linux/proc_fs.h> |
| #include <linux/vmalloc.h> |
| #include <linux/moduleparam.h> |
| #include <linux/scatterlist.h> |
| #include <linux/blkdev.h> |
| #include <linux/crc-t10dif.h> |
| #include <linux/spinlock.h> |
| #include <linux/interrupt.h> |
| #include <linux/atomic.h> |
| #include <linux/hrtimer.h> |
| #include <linux/uuid.h> |
| |
| #include <net/checksum.h> |
| |
| #include <asm/unaligned.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsicam.h> |
| #include <scsi/scsi_eh.h> |
| #include <scsi/scsi_tcq.h> |
| #include <scsi/scsi_dbg.h> |
| |
| #include "sd.h" |
| #include "scsi_logging.h" |
| |
| /* make sure inq_product_rev string corresponds to this version */ |
| #define SDEBUG_VERSION "1.86" |
| static const char *sdebug_version_date = "20160430"; |
| |
| #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_JDELAY 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 1024 |
| #define DEF_PHYSBLK_EXP 0 |
| #define DEF_PTYPE TYPE_DISK |
| #define DEF_REMOVABLE false |
| #define DEF_SCSI_LEVEL 7 /* INQUIRY, byte2 [6->SPC-4; 7->SPC-5] */ |
| #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 DEF_STATISTICS false |
| #define DEF_SUBMIT_QUEUES 1 |
| #define DEF_UUID_CTL 0 |
| #define JDELAY_OVERRIDDEN -9999 |
| |
| #define SDEBUG_LUN_0_VAL 0 |
| |
| /* bit mask values for sdebug_opts */ |
| #define SDEBUG_OPT_NOISE 1 |
| #define SDEBUG_OPT_MEDIUM_ERR 2 |
| #define SDEBUG_OPT_TIMEOUT 4 |
| #define SDEBUG_OPT_RECOVERED_ERR 8 |
| #define SDEBUG_OPT_TRANSPORT_ERR 16 |
| #define SDEBUG_OPT_DIF_ERR 32 |
| #define SDEBUG_OPT_DIX_ERR 64 |
| #define SDEBUG_OPT_MAC_TIMEOUT 128 |
| #define SDEBUG_OPT_SHORT_TRANSFER 0x100 |
| #define SDEBUG_OPT_Q_NOISE 0x200 |
| #define SDEBUG_OPT_ALL_TSF 0x400 |
| #define SDEBUG_OPT_RARE_TSF 0x800 |
| #define SDEBUG_OPT_N_WCE 0x1000 |
| #define SDEBUG_OPT_RESET_NOISE 0x2000 |
| #define SDEBUG_OPT_NO_CDB_NOISE 0x4000 |
| #define SDEBUG_OPT_ALL_NOISE (SDEBUG_OPT_NOISE | SDEBUG_OPT_Q_NOISE | \ |
| SDEBUG_OPT_RESET_NOISE) |
| #define SDEBUG_OPT_ALL_INJECTING (SDEBUG_OPT_RECOVERED_ERR | \ |
| SDEBUG_OPT_TRANSPORT_ERR | \ |
| SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR | \ |
| SDEBUG_OPT_SHORT_TRANSFER) |
| /* When "every_nth" > 0 then modulo "every_nth" commands: |
| * - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set |
| * - a RECOVERED_ERROR is simulated on successful read and write |
| * commands if SDEBUG_OPT_RECOVERED_ERR is set. |
| * - a TRANSPORT_ERROR is simulated on successful read and write |
| * commands if SDEBUG_OPT_TRANSPORT_ERR is set. |
| * |
| * When "every_nth" < 0 then after "- every_nth" commands: |
| * - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set |
| * - a RECOVERED_ERROR is simulated on successful read and write |
| * commands if SDEBUG_OPT_RECOVERED_ERR is set. |
| * - a TRANSPORT_ERROR is simulated on successful read and write |
| * commands if _DEBUG_OPT_TRANSPORT_ERR is set. |
| * This will continue on every subsequent command 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 |
| |
| /* when 1==SDEBUG_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 |
| |
| /* SDEBUG_CANQUEUE is the maximum number of commands that can be queued |
| * (for response) per submit queue at one time. Can be reduced by max_queue |
| * option. Command responses are not queued when jdelay=0 and ndelay=0. The |
| * per-device DEF_CMD_PER_LUN can be changed via sysfs: |
| * /sys/class/scsi_device/<h:c:t:l>/device/queue_depth |
| * but cannot exceed SDEBUG_CANQUEUE . |
| */ |
| #define SDEBUG_CANQUEUE_WORDS 3 /* a WORD is bits in a long */ |
| #define SDEBUG_CANQUEUE (SDEBUG_CANQUEUE_WORDS * BITS_PER_LONG) |
| #define DEF_CMD_PER_LUN 255 |
| |
| #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) |
| |
| #define SDEBUG_MAX_PARTS 4 |
| |
| #define SDEBUG_MAX_CMD_LEN 32 |
| |
| |
| struct sdebug_dev_info { |
| struct list_head dev_list; |
| unsigned int channel; |
| unsigned int target; |
| u64 lun; |
| uuid_be lu_name; |
| struct sdebug_host_info *sdbg_host; |
| unsigned long uas_bm[1]; |
| atomic_t num_in_q; |
| atomic_t stopped; |
| 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) |
| |
| struct sdebug_defer { |
| struct hrtimer hrt; |
| struct execute_work ew; |
| int sqa_idx; /* index of sdebug_queue array */ |
| int qc_idx; /* index of sdebug_queued_cmd array within sqa_idx */ |
| int issuing_cpu; |
| }; |
| |
| struct sdebug_queued_cmd { |
| /* corresponding bit set in in_use_bm[] in owning struct sdebug_queue |
| * instance indicates this slot is in use. |
| */ |
| struct sdebug_defer *sd_dp; |
| struct scsi_cmnd *a_cmnd; |
| unsigned int inj_recovered:1; |
| unsigned int inj_transport:1; |
| unsigned int inj_dif:1; |
| unsigned int inj_dix:1; |
| unsigned int inj_short:1; |
| }; |
| |
| struct sdebug_queue { |
| struct sdebug_queued_cmd qc_arr[SDEBUG_CANQUEUE]; |
| unsigned long in_use_bm[SDEBUG_CANQUEUE_WORDS]; |
| spinlock_t qc_lock; |
| atomic_t blocked; /* to temporarily stop more being queued */ |
| }; |
| |
| static atomic_t sdebug_cmnd_count; /* number of incoming commands */ |
| static atomic_t sdebug_completions; /* count of deferred completions */ |
| static atomic_t sdebug_miss_cpus; /* submission + completion cpus differ */ |
| static atomic_t sdebug_a_tsf; /* 'almost task set full' counter */ |
| |
| 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 */ |
| }; |
| |
| /* SCSI opcodes (first byte of cdb) of interest 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, 0x7e is "extended cdb" */ |
| 0, 0, 0, 0, 0, 0, 0, 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, |
| }; |
| |
| 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 *); |
| |
| 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, 0x2f, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, NULL, NULL, /* VERIFY(10) */ |
| {10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7, |
| 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, 0x1e, 0, 0, NULL, NULL, /* ALLOW REMOVAL */ |
| {6, 0, 0, 0, 0x3, 0xc7, 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} }, |
| }; |
| |
| static int sdebug_add_host = DEF_NUM_HOST; |
| static int sdebug_ato = DEF_ATO; |
| static int sdebug_jdelay = DEF_JDELAY; /* if > 0 then unit is jiffies */ |
| static int sdebug_dev_size_mb = DEF_DEV_SIZE_MB; |
| static int sdebug_dif = DEF_DIF; |
| static int sdebug_dix = DEF_DIX; |
| static int sdebug_dsense = DEF_D_SENSE; |
| static int sdebug_every_nth = DEF_EVERY_NTH; |
| static int sdebug_fake_rw = DEF_FAKE_RW; |
| static unsigned int sdebug_guard = DEF_GUARD; |
| static int sdebug_lowest_aligned = DEF_LOWEST_ALIGNED; |
| static int sdebug_max_luns = DEF_MAX_LUNS; |
| static int sdebug_max_queue = SDEBUG_CANQUEUE; /* per submit queue */ |
| static atomic_t retired_max_queue; /* if > 0 then was prior max_queue */ |
| static int sdebug_ndelay = DEF_NDELAY; /* if > 0 then unit is nanoseconds */ |
| static int sdebug_no_lun_0 = DEF_NO_LUN_0; |
| static int sdebug_no_uld; |
| static int sdebug_num_parts = DEF_NUM_PARTS; |
| static int sdebug_num_tgts = DEF_NUM_TGTS; /* targets per host */ |
| static int sdebug_opt_blks = DEF_OPT_BLKS; |
| static int sdebug_opts = DEF_OPTS; |
| static int sdebug_physblk_exp = DEF_PHYSBLK_EXP; |
| static int sdebug_ptype = DEF_PTYPE; /* SCSI peripheral device type */ |
| static int sdebug_scsi_level = DEF_SCSI_LEVEL; |
| static int sdebug_sector_size = DEF_SECTOR_SIZE; |
| static int sdebug_virtual_gb = DEF_VIRTUAL_GB; |
| static int sdebug_vpd_use_hostno = DEF_VPD_USE_HOSTNO; |
| static unsigned int sdebug_lbpu = DEF_LBPU; |
| static unsigned int sdebug_lbpws = DEF_LBPWS; |
| static unsigned int sdebug_lbpws10 = DEF_LBPWS10; |
| static unsigned int sdebug_lbprz = DEF_LBPRZ; |
| static unsigned int sdebug_unmap_alignment = DEF_UNMAP_ALIGNMENT; |
| static unsigned int sdebug_unmap_granularity = DEF_UNMAP_GRANULARITY; |
| static unsigned int sdebug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; |
| static unsigned int sdebug_unmap_max_desc = DEF_UNMAP_MAX_DESC; |
| static unsigned int sdebug_write_same_length = DEF_WRITESAME_LENGTH; |
| static int sdebug_uuid_ctl = DEF_UUID_CTL; |
| static bool sdebug_removable = DEF_REMOVABLE; |
| static bool sdebug_clustering; |
| static bool sdebug_host_lock = DEF_HOST_LOCK; |
| static bool sdebug_strict = DEF_STRICT; |
| static bool sdebug_any_injecting_opt; |
| static bool sdebug_verbose; |
| static bool have_dif_prot; |
| static bool sdebug_statistics = DEF_STATISTICS; |
| static bool sdebug_mq_active; |
| |
| 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 */ |
| |
| static LIST_HEAD(sdebug_host_list); |
| static DEFINE_SPINLOCK(sdebug_host_list_lock); |
| |
| 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 int submit_queues = DEF_SUBMIT_QUEUES; /* > 1 for multi-queue (mq) */ |
| static struct sdebug_queue *sdebug_q_arr; /* ptr to array of submit queues */ |
| |
| 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; |
| |
| |
| /* Only do the extra work involved in logical block provisioning if one or |
| * more of the lbpu, lbpws or lbpws10 parameters are given and we are doing |
| * real reads and writes (i.e. not skipping them for speed). |
| */ |
| static inline bool scsi_debug_lbp(void) |
| { |
| return 0 == sdebug_fake_rw && |
| (sdebug_lbpu || sdebug_lbpws || sdebug_lbpws10); |
| } |
| |
| static void *fake_store(unsigned long long lba) |
| { |
| lba = do_div(lba, sdebug_store_sectors); |
| |
| return fake_storep + lba * sdebug_sector_size; |
| } |
| |
| static struct sd_dif_tuple *dif_store(sector_t sector) |
| { |
| sector = sector_div(sector, sdebug_store_sectors); |
| |
| return dif_storep + sector; |
| } |
| |
| 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) && |
| (sdebug_num_tgts > hpnt->this_id)) |
| hpnt->max_id = sdebug_num_tgts + 1; |
| else |
| hpnt->max_id = sdebug_num_tgts; |
| /* sdebug_max_luns; */ |
| hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1; |
| } |
| 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(sdebug_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 (sdebug_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 (sdebug_verbose) |
| 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(sdebug_dsense, sbuff, key, asc, asq); |
| |
| if (sdebug_verbose) |
| 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 (sdebug_verbose) { |
| 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 make_ua(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) |
| { |
| int k; |
| |
| 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(scp, UNIT_ATTENTION, UA_RESET_ASC, |
| POWER_ON_RESET_ASCQ); |
| if (sdebug_verbose) |
| cp = "power on reset"; |
| break; |
| case SDEBUG_UA_BUS_RESET: |
| mk_sense_buffer(scp, UNIT_ATTENTION, UA_RESET_ASC, |
| BUS_RESET_ASCQ); |
| if (sdebug_verbose) |
| cp = "bus reset"; |
| break; |
| case SDEBUG_UA_MODE_CHANGED: |
| mk_sense_buffer(scp, UNIT_ATTENTION, UA_CHANGED_ASC, |
| MODE_CHANGED_ASCQ); |
| if (sdebug_verbose) |
| cp = "mode parameters changed"; |
| break; |
| case SDEBUG_UA_CAPACITY_CHANGED: |
| mk_sense_buffer(scp, UNIT_ATTENTION, UA_CHANGED_ASC, |
| CAPACITY_CHANGED_ASCQ); |
| if (sdebug_verbose) |
| cp = "capacity data changed"; |
| break; |
| case SDEBUG_UA_MICROCODE_CHANGED: |
| mk_sense_buffer(scp, UNIT_ATTENTION, |
| TARGET_CHANGED_ASC, |
| MICROCODE_CHANGED_ASCQ); |
| if (sdebug_verbose) |
| cp = "microcode has been changed"; |
| break; |
| case SDEBUG_UA_MICROCODE_CHANGED_WO_RESET: |
| mk_sense_buffer(scp, UNIT_ATTENTION, |
| TARGET_CHANGED_ASC, |
| MICROCODE_CHANGED_WO_RESET_ASCQ); |
| if (sdebug_verbose) |
| 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: sdebug_scsi_level does not use the same |
| * values as struct scsi_device->scsi_level. |
| */ |
| if (sdebug_scsi_level >= 6) /* SPC-4 and above */ |
| clear_luns_changed_on_target(devip); |
| mk_sense_buffer(scp, UNIT_ATTENTION, |
| TARGET_CHANGED_ASC, |
| LUNS_CHANGED_ASCQ); |
| if (sdebug_verbose) |
| cp = "reported luns data has changed"; |
| break; |
| default: |
| pr_warn("unexpected unit attention code=%d\n", k); |
| if (sdebug_verbose) |
| cp = "unknown"; |
| break; |
| } |
| clear_bit(k, devip->uas_bm); |
| if (sdebug_verbose) |
| sdev_printk(KERN_INFO, scp->device, |
| "%s reports: Unit attention: %s\n", |
| my_name, cp); |
| 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 = "0186"; /* version less '.' */ |
| /* Use some locally assigned NAAs for SAS addresses. */ |
| static const u64 naa3_comp_a = 0x3222222000000000ULL; |
| static const u64 naa3_comp_b = 0x3333333000000000ULL; |
| static const u64 naa3_comp_c = 0x3111111000000000ULL; |
| |
| /* Device identification VPD page. Returns number of bytes placed in arr */ |
| static int inquiry_vpd_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, |
| const uuid_be *lu_name) |
| { |
| 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) { |
| if (sdebug_uuid_ctl) { |
| /* Locally assigned UUID */ |
| arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| arr[num++] = 0xa; /* PIV=0, lu, naa */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x12; |
| arr[num++] = 0x10; /* uuid type=1, locally assigned */ |
| arr[num++] = 0x0; |
| memcpy(arr + num, lu_name, 16); |
| num += 16; |
| } else { |
| /* NAA-3, Logical unit identifier (binary) */ |
| arr[num++] = 0x1; /* binary (not necessarily sas) */ |
| arr[num++] = 0x3; /* PIV=0, lu, naa */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x8; |
| put_unaligned_be64(naa3_comp_b + dev_id_num, arr + num); |
| num += 8; |
| } |
| /* 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-3, Target port identifier */ |
| arr[num++] = 0x61; /* proto=sas, binary */ |
| arr[num++] = 0x93; /* piv=1, target port, naa */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x8; |
| put_unaligned_be64(naa3_comp_a + port_a, arr + num); |
| num += 8; |
| /* NAA-3, 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; |
| put_unaligned_be16(port_group_id, arr + num); |
| num += 2; |
| /* NAA-3, Target device identifier */ |
| arr[num++] = 0x61; /* proto=sas, binary */ |
| arr[num++] = 0xa3; /* piv=1, target device, naa */ |
| arr[num++] = 0x0; |
| arr[num++] = 0x8; |
| put_unaligned_be64(naa3_comp_a + target_dev_id, arr + num); |
| num += 8; |
| /* 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.32222220", 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_vpd_84(unsigned char *arr) |
| { |
| memcpy(arr, vpd84_data, sizeof(vpd84_data)); |
| return sizeof(vpd84_data); |
| } |
| |
| /* Management network addresses VPD page */ |
| static int inquiry_vpd_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_vpd_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 */ |
| put_unaligned_be64(naa3_comp_a + port_a, arr + num); |
| num += 8; |
| 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 */ |
| put_unaligned_be64(naa3_comp_a + port_b, arr + num); |
| num += 8; |
| |
| 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_vpd_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_vpd_b0(unsigned char *arr) |
| { |
| unsigned int gran; |
| |
| memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); |
| |
| /* Optimal transfer length granularity */ |
| gran = 1 << sdebug_physblk_exp; |
| put_unaligned_be16(gran, arr + 2); |
| |
| /* Maximum Transfer Length */ |
| if (sdebug_store_sectors > 0x400) |
| put_unaligned_be32(sdebug_store_sectors, arr + 4); |
| |
| /* Optimal Transfer Length */ |
| put_unaligned_be32(sdebug_opt_blks, &arr[8]); |
| |
| if (sdebug_lbpu) { |
| /* Maximum Unmap LBA Count */ |
| put_unaligned_be32(sdebug_unmap_max_blocks, &arr[16]); |
| |
| /* Maximum Unmap Block Descriptor Count */ |
| put_unaligned_be32(sdebug_unmap_max_desc, &arr[20]); |
| } |
| |
| /* Unmap Granularity Alignment */ |
| if (sdebug_unmap_alignment) { |
| put_unaligned_be32(sdebug_unmap_alignment, &arr[28]); |
| arr[28] |= 0x80; /* UGAVALID */ |
| } |
| |
| /* Optimal Unmap Granularity */ |
| put_unaligned_be32(sdebug_unmap_granularity, &arr[24]); |
| |
| /* Maximum WRITE SAME Length */ |
| put_unaligned_be64(sdebug_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_vpd_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-4) */ |
| static int inquiry_vpd_b2(unsigned char *arr) |
| { |
| memset(arr, 0, 0x4); |
| arr[0] = 0; /* threshold exponent */ |
| if (sdebug_lbpu) |
| arr[1] = 1 << 7; |
| if (sdebug_lbpws) |
| arr[1] |= 1 << 6; |
| if (sdebug_lbpws10) |
| arr[1] |= 1 << 5; |
| if (sdebug_lbprz && scsi_debug_lbp()) |
| arr[1] |= (sdebug_lbprz & 0x7) << 2; /* sbc4r07 and later */ |
| /* anc_sup=0; dp=0 (no provisioning group descriptor) */ |
| /* minimum_percentage=0; provisioning_type=0 (unknown) */ |
| /* threshold_percentage=0 */ |
| 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, is_disk; |
| |
| alloc_len = get_unaligned_be16(cmd + 3); |
| arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC); |
| if (! arr) |
| return DID_REQUEUE << 16; |
| is_disk = (sdebug_ptype == TYPE_DISK); |
| have_wlun = scsi_is_wlun(scp->device->lun); |
| if (have_wlun) |
| pq_pdt = TYPE_WLUN; /* present, wlun */ |
| else if (sdebug_no_lun_0 && (devip->lun == SDEBUG_LUN_0_VAL)) |
| pq_pdt = 0x7f; /* not present, PQ=3, PDT=0x1f */ |
| else |
| pq_pdt = (sdebug_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 (sdebug_vpd_use_hostno == 0) |
| 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 */ |
| if (is_disk) { /* SBC only */ |
| arr[n++] = 0x89; /* ATA information */ |
| arr[n++] = 0xb0; /* Block limits */ |
| arr[n++] = 0xb1; /* Block characteristics */ |
| arr[n++] = 0xb2; /* Logical Block Prov */ |
| } |
| 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_vpd_83(&arr[4], port_group_id, |
| target_dev_id, lu_id_num, |
| lu_id_str, len, |
| &devip->lu_name); |
| } else if (0x84 == cmd[2]) { /* Software interface ident. */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_vpd_84(&arr[4]); |
| } else if (0x85 == cmd[2]) { /* Management network addresses */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_vpd_85(&arr[4]); |
| } else if (0x86 == cmd[2]) { /* extended inquiry */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = 0x3c; /* number of following entries */ |
| if (sdebug_dif == SD_DIF_TYPE3_PROTECTION) |
| arr[4] = 0x4; /* SPT: GRD_CHK:1 */ |
| else if (have_dif_prot) |
| 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_vpd_88(&arr[4], target_dev_id); |
| } else if (is_disk && 0x89 == cmd[2]) { /* ATA information */ |
| arr[1] = cmd[2]; /*sanity */ |
| n = inquiry_vpd_89(&arr[4]); |
| put_unaligned_be16(n, arr + 2); |
| } else if (is_disk && 0xb0 == cmd[2]) { /* Block limits */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_vpd_b0(&arr[4]); |
| } else if (is_disk && 0xb1 == cmd[2]) { /* Block char. */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_vpd_b1(&arr[4]); |
| } else if (is_disk && 0xb2 == cmd[2]) { /* LB Prov. */ |
| arr[1] = cmd[2]; /*sanity */ |
| arr[3] = inquiry_vpd_b2(&arr[4]); |
| } else { |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, -1); |
| kfree(arr); |
| return check_condition_result; |
| } |
| len = min(get_unaligned_be16(arr + 2) + 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] = sdebug_removable ? 0x80 : 0; /* Removable disk */ |
| arr[2] = sdebug_scsi_level; |
| arr[3] = 2; /* response_data_format==2 */ |
| arr[4] = SDEBUG_LONG_INQ_SZ - 5; |
| arr[5] = (int)have_dif_prot; /* PROTECT bit */ |
| if (sdebug_vpd_use_hostno == 0) |
| 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 */ |
| put_unaligned_be16(0xc0, arr + 58); /* SAM-6 no version claimed */ |
| put_unaligned_be16(0x5c0, arr + 60); /* SPC-5 no version claimed */ |
| n = 62; |
| if (is_disk) { /* SBC-4 no version claimed */ |
| put_unaligned_be16(0x600, arr + n); |
| n += 2; |
| } else if (sdebug_ptype == TYPE_TAPE) { /* SSC-4 rev 3 */ |
| put_unaligned_be16(0x525, arr + n); |
| n += 2; |
| } |
| put_unaligned_be16(0x2100, arr + n); /* SPL-4 no version claimed */ |
| ret = fill_from_dev_buffer(scp, arr, |
| min(alloc_len, SDEBUG_LONG_INQ_SZ)); |
| kfree(arr); |
| return ret; |
| } |
| |
| static unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, |
| 0, 0, 0x0, 0x0}; |
| |
| 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; |
| int len = 18; |
| |
| memset(arr, 0, sizeof(arr)); |
| dsense = !!(cmd[1] & 1); |
| 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 == sdebug_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, stop; |
| |
| power_cond = (cmd[4] & 0xf0) >> 4; |
| if (power_cond) { |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, 7); |
| return check_condition_result; |
| } |
| stop = !(cmd[4] & 1); |
| atomic_xchg(&devip->stopped, stop); |
| return 0; |
| } |
| |
| static sector_t get_sdebug_capacity(void) |
| { |
| static const unsigned int gibibyte = 1073741824; |
| |
| if (sdebug_virtual_gb > 0) |
| return (sector_t)sdebug_virtual_gb * |
| (gibibyte / sdebug_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; |
| put_unaligned_be32(capac, arr + 0); |
| } else |
| put_unaligned_be32(0xffffffff, arr + 0); |
| put_unaligned_be16(sdebug_sector_size, arr + 6); |
| 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]; |
| int alloc_len; |
| |
| alloc_len = get_unaligned_be32(cmd + 10); |
| /* following just in case virtual_gb changed */ |
| sdebug_capacity = get_sdebug_capacity(); |
| memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); |
| put_unaligned_be64((u64)(sdebug_capacity - 1), arr + 0); |
| put_unaligned_be32(sdebug_sector_size, arr + 8); |
| arr[13] = sdebug_physblk_exp & 0xf; |
| arr[14] = (sdebug_lowest_aligned >> 8) & 0x3f; |
| |
| if (scsi_debug_lbp()) { |
| arr[14] |= 0x80; /* LBPME */ |
| /* from sbc4r07, this LBPRZ field is 1 bit, but the LBPRZ in |
| * the LB Provisioning VPD page is 3 bits. Note that lbprz=2 |
| * in the wider field maps to 0 in this field. |
| */ |
| if (sdebug_lbprz & 1) /* precisely what the draft requires */ |
| arr[14] |= 0x40; |
| } |
| |
| arr[15] = sdebug_lowest_aligned & 0xff; |
| |
| if (have_dif_prot) { |
| arr[12] = (sdebug_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 = get_unaligned_be32(cmd + 6); |
| 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 (sdebug_vpd_use_hostno == 0) { |
| 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; /* only support active/optimized paths */ |
| } |
| put_unaligned_be16(port_group_a, arr + n); |
| n += 2; |
| 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 */ |
| put_unaligned_be16(port_a, arr + n); |
| n += 2; |
| arr[n++] = 3; /* Port unavailable */ |
| arr[n++] = 0x08; /* claim: only unavailalbe paths are supported */ |
| put_unaligned_be16(port_group_b, arr + n); |
| n += 2; |
| 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 */ |
| put_unaligned_be16(port_b, arr + n); |
| n += 2; |
| |
| rlen = n - 4; |
| put_unaligned_be32(rlen, arr + 0); |
| |
| /* |
| * 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); |
| } |
| |
| /* <<Following mode page info copied from ST318451LW>> */ |
| |
| 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)); |
| put_unaligned_be16(sdebug_sectors_per, p + 10); |
| put_unaligned_be16(sdebug_sector_size, p + 12); |
| if (sdebug_removable) |
| p[20] |= 0x20; /* should agree with INQUIRY */ |
| if (1 == pcontrol) |
| memset(p + 2, 0, sizeof(format_pg) - 2); |
| return sizeof(format_pg); |
| } |
| |
| 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 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 (SDEBUG_OPT_N_WCE & sdebug_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 unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, |
| 0, 0, 0x2, 0x4b}; |
| |
| 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 (sdebug_dsense) |
| ctrl_m_pg[2] |= 0x4; |
| else |
| ctrl_m_pg[2] &= ~0x4; |
| |
| if (sdebug_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, |
| 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
| 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
| 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, |
| 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
| 0, 0, 0, 0, 0, 0, 0, 0, /* insert SAS addr */ |
| 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; |
| |
| put_unaligned_be64(naa3_comp_a, sas_pcd_m_pg + 16); |
| put_unaligned_be64(naa3_comp_c + 1, sas_pcd_m_pg + 24); |
| put_unaligned_be64(naa3_comp_a, sas_pcd_m_pg + 64); |
| put_unaligned_be64(naa3_comp_c + 1, sas_pcd_m_pg + 72); |
| port_a = target_dev_id + 1; |
| port_b = port_a + 1; |
| memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); |
| put_unaligned_be32(port_a, p + 20); |
| put_unaligned_be32(port_b, p + 48 + 20); |
| if (1 == pcontrol) |
| memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); |
| return sizeof(sas_pcd_m_pg); |
| } |
| |
| static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) |
| { /* SAS SSP shared protocol specific port mode subpage */ |
| unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, |
| }; |
| |
| memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); |
| if (1 == pcontrol) |
| memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); |
| return sizeof(sas_sha_m_pg); |
| } |
| |
| #define SDEBUG_MAX_MSENSE_SZ 256 |
| |
| static int resp_mode_sense(struct scsi_cmnd *scp, |
| struct sdebug_dev_info *devip) |
| { |
| int pcontrol, pcode, subpcode, bd_len; |
| unsigned char dev_spec; |
| int alloc_len, offset, len, target_dev_id; |
| int target = scp->device->id; |
| unsigned char * ap; |
| unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; |
| unsigned char *cmd = scp->cmnd; |
| bool dbd, llbaa, msense_6, is_disk, bad_pcode; |
| |
| dbd = !!(cmd[1] & 0x8); /* disable block descriptors */ |
| pcontrol = (cmd[2] & 0xc0) >> 6; |
| pcode = cmd[2] & 0x3f; |
| subpcode = cmd[3]; |
| msense_6 = (MODE_SENSE == cmd[0]); |
| llbaa = msense_6 ? false : !!(cmd[1] & 0x10); |
| is_disk = (sdebug_ptype == TYPE_DISK); |
| if (is_disk && !dbd) |
| bd_len = llbaa ? 16 : 8; |
| else |
| bd_len = 0; |
| alloc_len = msense_6 ? cmd[4] : get_unaligned_be16(cmd + 7); |
| memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); |
| if (0x3 == pcontrol) { /* Saving values not supported */ |
| mk_sense_buffer(scp, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, 0); |
| return check_condition_result; |
| } |
| target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + |
| (devip->target * 1000) - 3; |
| /* for disks set DPOFUA bit and clear write protect (WP) bit */ |
| if (is_disk) |
| dev_spec = 0x10; /* =0x90 if WP=1 implies read-only */ |
| else |
| dev_spec = 0x0; |
| if (msense_6) { |
| arr[2] = dev_spec; |
| arr[3] = bd_len; |
| offset = 4; |
| } else { |
| arr[3] = dev_spec; |
| if (16 == bd_len) |
| arr[4] = 0x1; /* set LONGLBA bit */ |
| arr[7] = bd_len; /* assume 255 or less */ |
| offset = 8; |
| } |
| ap = arr + offset; |
| if ((bd_len > 0) && (!sdebug_capacity)) |
| sdebug_capacity = get_sdebug_capacity(); |
| |
| if (8 == bd_len) { |
| if (sdebug_capacity > 0xfffffffe) |
| put_unaligned_be32(0xffffffff, ap + 0); |
| else |
| put_unaligned_be32(sdebug_capacity, ap + 0); |
| put_unaligned_be16(sdebug_sector_size, ap + 6); |
| offset += bd_len; |
| ap = arr + offset; |
| } else if (16 == bd_len) { |
| put_unaligned_be64((u64)sdebug_capacity, ap + 0); |
| put_unaligned_be32(sdebug_sector_size, ap + 12); |
| offset += bd_len; |
| ap = arr + offset; |
| } |
| |
| if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { |
| /* TODO: Control Extension page */ |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
| return check_condition_result; |
| } |
| bad_pcode = false; |
| |
| switch (pcode) { |
| case 0x1: /* Read-Write error recovery page, direct access */ |
| len = resp_err_recov_pg(ap, pcontrol, target); |
| offset += len; |
| break; |
| case 0x2: /* Disconnect-Reconnect page, all devices */ |
| len = resp_disconnect_pg(ap, pcontrol, target); |
| offset += len; |
| break; |
| case 0x3: /* Format device page, direct access */ |
| if (is_disk) { |
| len = resp_format_pg(ap, pcontrol, target); |
| offset += len; |
| } else |
| bad_pcode = true; |
| break; |
| case 0x8: /* Caching page, direct access */ |
| if (is_disk) { |
| len = resp_caching_pg(ap, pcontrol, target); |
| offset += len; |
| } else |
| bad_pcode = true; |
| break; |
| case 0xa: /* Control Mode page, all devices */ |
| len = resp_ctrl_m_pg(ap, pcontrol, target); |
| offset += len; |
| break; |
| case 0x19: /* if spc==1 then sas phy, control+discover */ |
| if ((subpcode > 0x2) && (subpcode < 0xff)) { |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
| return check_condition_result; |
| } |
| len = 0; |
| if ((0x0 == subpcode) || (0xff == subpcode)) |
| len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| if ((0x1 == subpcode) || (0xff == subpcode)) |
| len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, |
| target_dev_id); |
| if ((0x2 == subpcode) || (0xff == subpcode)) |
| len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| offset += len; |
| break; |
| case 0x1c: /* Informational Exceptions Mode page, all devices */ |
| len = resp_iec_m_pg(ap, pcontrol, target); |
| offset += len; |
| break; |
| case 0x3f: /* Read all Mode pages */ |
| if ((0 == subpcode) || (0xff == subpcode)) { |
| len = resp_err_recov_pg(ap, pcontrol, target); |
| len += resp_disconnect_pg(ap + len, pcontrol, target); |
| if (is_disk) { |
| len += resp_format_pg(ap + len, pcontrol, |
| target); |
| len += resp_caching_pg(ap + len, pcontrol, |
| target); |
| } |
| len += resp_ctrl_m_pg(ap + len, pcontrol, target); |
| len += resp_sas_sf_m_pg(ap + len, pcontrol, target); |
| if (0xff == subpcode) { |
| len += resp_sas_pcd_m_spg(ap + len, pcontrol, |
| target, target_dev_id); |
| len += resp_sas_sha_m_spg(ap + len, pcontrol); |
| } |
| len += resp_iec_m_pg(ap + len, pcontrol, target); |
| offset += len; |
| } else { |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
| return check_condition_result; |
| } |
| break; |
| default: |
| bad_pcode = true; |
| break; |
| } |
| if (bad_pcode) { |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
| return check_condition_result; |
| } |
| if (msense_6) |
| arr[0] = offset - 1; |
| else |
| put_unaligned_be16((offset - 2), arr + 0); |
| return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); |
| } |
| |
| #define SDEBUG_MAX_MSELECT_SZ 512 |
| |
| static int resp_mode_select(struct scsi_cmnd *scp, |
| struct sdebug_dev_info *devip) |
| { |
| int pf, sp, ps, md_len, bd_len, off, spf, pg_len; |
| int param_len, res, mpage; |
| unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; |
| unsigned char *cmd = scp->cmnd; |
| int mselect6 = (MODE_SELECT == cmd[0]); |
| |
| memset(arr, 0, sizeof(arr)); |
| pf = cmd[1] & 0x10; |
| sp = cmd[1] & 0x1; |
| param_len = mselect6 ? cmd[4] : get_unaligned_be16(cmd + 7); |
| if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, mselect6 ? 4 : 7, -1); |
| return check_condition_result; |
| } |
| res = fetch_to_dev_buffer(scp, arr, param_len); |
| if (-1 == res) |
| return DID_ERROR << 16; |
| else if (sdebug_verbose && (res < param_len)) |
| sdev_printk(KERN_INFO, scp->device, |
| "%s: cdb indicated=%d, IO sent=%d bytes\n", |
| __func__, param_len, res); |
| md_len = mselect6 ? (arr[0] + 1) : (get_unaligned_be16(arr + 0) + 2); |
| bd_len = mselect6 ? arr[3] : get_unaligned_be16(arr + 6); |
| if (md_len > 2) { |
| mk_sense_invalid_fld(scp, SDEB_IN_DATA, 0, -1); |
| return check_condition_result; |
| } |
| off = bd_len + (mselect6 ? 4 : 8); |
| mpage = arr[off] & 0x3f; |
| ps = !!(arr[off] & 0x80); |
| if (ps) { |
| mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 7); |
| return check_condition_result; |
| } |
| spf = !!(arr[off] & 0x40); |
| pg_len = spf ? (get_unaligned_be16(arr + off + 2) + 4) : |
| (arr[off + 1] + 2); |
| if ((pg_len + off) > param_len) { |
| mk_sense_buffer(scp, ILLEGAL_REQUEST, |
| PARAMETER_LIST_LENGTH_ERR, 0); |
| return check_condition_result; |
| } |
| switch (mpage) { |
| case 0x8: /* Caching Mode page */ |
| if (caching_pg[1] == arr[off + 1]) { |
| memcpy(caching_pg + 2, arr + off + 2, |
| sizeof(caching_pg) - 2); |
| goto set_mode_changed_ua; |
| } |
| break; |
| case 0xa: /* Control Mode page */ |
| if (ctrl_m_pg[1] == arr[off + 1]) { |
| memcpy(ctrl_m_pg + 2, arr + off + 2, |
| sizeof(ctrl_m_pg) - 2); |
| sdebug_dsense = !!(ctrl_m_pg[2] & 0x4); |
| goto set_mode_changed_ua; |
| } |
| break; |
| case 0x1c: /* Informational Exceptions Mode page */ |
| if (iec_m_pg[1] == arr[off + 1]) { |
| memcpy(iec_m_pg + 2, arr + off + 2, |
| sizeof(iec_m_pg) - 2); |
| goto set_mode_changed_ua; |
| } |
| break; |
| default: |
| break; |
| } |
| mk_sense_invalid_fld(scp, SDEB_IN_DATA, off, 5); |
| return check_condition_result; |
| set_mode_changed_ua: |
| set_bit(SDEBUG_UA_MODE_CHANGED, devip->uas_bm); |
| return 0; |
| } |
| |
| static int resp_temp_l_pg(unsigned char * arr) |
| { |
| unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, |
| 0x0, 0x1, 0x3, 0x2, 0x0, 65, |
| }; |
| |
| memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); |
| return sizeof(temp_l_pg); |
| } |
| |
| static int resp_ie_l_pg(unsigned char * arr) |
| { |
| unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, |
| }; |
| |
| memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); |
| if (iec_m_pg[2] & 0x4) { /* TEST bit set */ |
| arr[4] = THRESHOLD_EXCEEDED; |
| arr[5] = 0xff; |
| } |
| return sizeof(ie_l_pg); |
| } |
| |
| #define SDEBUG_MAX_LSENSE_SZ 512 |
| |
| static int resp_log_sense(struct scsi_cmnd * scp, |
| struct sdebug_dev_info * devip) |
| { |
| int ppc, sp, pcontrol, pcode, subpcode, alloc_len, len, n; |
| unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; |
| unsigned char *cmd = scp->cmnd; |
| |
| memset(arr, 0, sizeof(arr)); |
| ppc = cmd[1] & 0x2; |
| sp = cmd[1] & 0x1; |
| if (ppc || sp) { |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, 1, ppc ? 1 : 0); |
| return check_condition_result; |
| } |
| pcontrol = (cmd[2] & 0xc0) >> 6; |
| pcode = cmd[2] & 0x3f; |
| subpcode = cmd[3] & 0xff; |
| alloc_len = get_unaligned_be16(cmd + 7); |
| arr[0] = pcode; |
| if (0 == subpcode) { |
| switch (pcode) { |
| case 0x0: /* Supported log pages log page */ |
| n = 4; |
| arr[n++] = 0x0; /* this page */ |
| arr[n++] = 0xd; /* Temperature */ |
| arr[n++] = 0x2f; /* Informational exceptions */ |
| arr[3] = n - 4; |
| break; |
| case 0xd: /* Temperature log page */ |
| arr[3] = resp_temp_l_pg(arr + 4); |
| break; |
| case 0x2f: /* Informational exceptions log page */ |
| arr[3] = resp_ie_l_pg(arr + 4); |
| break; |
| default: |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
| return check_condition_result; |
| } |
| } else if (0xff == subpcode) { |
| arr[0] |= 0x40; |
| arr[1] = subpcode; |
| switch (pcode) { |
| case 0x0: /* Supported log pages and subpages log page */ |
| n = 4; |
| arr[n++] = 0x0; |
| arr[n++] = 0x0; /* 0,0 page */ |
| arr[n++] = 0x0; |
| arr[n++] = 0xff; /* this page */ |
| arr[n++] = 0xd; |
| arr[n++] = 0x0; /* Temperature */ |
| arr[n++] = 0x2f; |
| arr[n++] = 0x0; /* Informational exceptions */ |
| arr[3] = n - 4; |
| break; |
| case 0xd: /* Temperature subpages */ |
| n = 4; |
| arr[n++] = 0xd; |
| arr[n++] = 0x0; /* Temperature */ |
| arr[3] = n - 4; |
| break; |
| case 0x2f: /* Informational exceptions subpages */ |
| n = 4; |
| arr[n++] = 0x2f; |
| arr[n++] = 0x0; /* Informational exceptions */ |
| arr[3] = n - 4; |
| break; |
| default: |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); |
| return check_condition_result; |
| } |
| } else { |
| mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); |
| return check_condition_result; |
| } |
| len = min(get_unaligned_be16(arr + 2) + 4, alloc_len); |
| return fill_from_dev_buffer(scp, arr, |
| min(len, SDEBUG_MAX_INQ_ARR_SZ)); |
| } |
| |
| static int check_device_access_params(struct scsi_cmnd *scp, |
| unsigned long long lba, unsigned int num) |
| { |
| if (lba + num > sdebug_capacity) { |
| mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, 0); |
| return check_condition_result; |
| } |
| /* transfer length excessive (tie in to block limits VPD page) */ |
| if (num > sdebug_store_sectors) { |
| /* needs work to find which cdb byte 'num' comes from */ |
| mk_sense_buffer(scp, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); |
| return check_condition_result; |
| } |
| return 0; |
| } |
| |
| /* Returns number of bytes copied or -1 if error. */ |
| static int do_device_access(struct scsi_cmnd *scmd, u64 lba, u32 num, |
| bool do_write) |
| { |
| int ret; |
| u64 block, rest = 0; |
| struct scsi_data_buffer *sdb; |
| enum dma_data_direction dir; |
| |
| if (do_write) { |
| sdb = scsi_out(scmd); |
| dir = DMA_TO_DEVICE; |
| } else { |
| sdb = scsi_in(scmd); |
| dir = DMA_FROM_DEVICE; |
| } |
| |
| if (!sdb->length) |
| return 0; |
| if (!(scsi_bidi_cmnd(scmd) || scmd->sc_data_direction == dir)) |
| return -1; |
| |
| block = do_div(lba, sdebug_store_sectors); |
| if (block + num > sdebug_store_sectors) |
| rest = block + num - sdebug_store_sectors; |
| |
| ret = sg_copy_buffer(sdb->table.sgl, sdb->table.nents, |
| fake_storep + (block * sdebug_sector_size), |
| (num - rest) * sdebug_sector_size, 0, do_write); |
| if (ret != (num - rest) * sdebug_sector_size) |
| return ret; |
| |
| if (rest) { |
| ret += sg_copy_buffer(sdb->table.sgl, sdb->table.nents, |
| fake_storep, rest * sdebug_sector_size, |
| (num - rest) * sdebug_sector_size, do_write); |
| } |
| |
| return ret; |
| } |
| |
| /* If fake_store(lba,num) compares equal to arr(num), then copy top half of |
| * arr into fake_store(lba,num) and return true. If comparison fails then |
| * return false. */ |
| static bool comp_write_worker(u64 lba, u32 num, const u8 *arr) |
| { |
| bool res; |
| u64 block, rest = 0; |
| u32 store_blks = sdebug_store_sectors; |
| u32 lb_size = sdebug_sector_size; |
| |
| block = do_div(lba, store_blks); |
| if (block + num > store_blks) |
| rest = block + num - store_blks; |
| |
| res = !memcmp(fake_storep + (block * lb_size), arr, |
| (num - rest) * lb_size); |
| if (!res) |
| return res; |
| if (rest) |
| res = memcmp(fake_storep, arr + ((num - rest) * lb_size), |
| rest * lb_size); |
| if (!res) |
| return res; |
| arr += num * lb_size; |
| memcpy(fake_storep + (block * lb_size), arr, (num - rest) * lb_size); |
| if (rest) |
| memcpy(fake_storep, arr + ((num - rest) * lb_size), |
| rest * lb_size); |
| return res; |
| } |
| |
| static __be16 dif_compute_csum(const void *buf, int len) |
| { |
| __be16 csum; |
| |
| if (sdebug_guard) |
| csum = (__force __be16)ip_compute_csum(buf, len); |
| else |
| csum = cpu_to_be16(crc_t10dif(buf, len)); |
| |
| return csum; |
| } |
| |
| static int dif_verify(struct sd_dif_tuple *sdt, const void *data, |
| sector_t sector, u32 ei_lba) |
| { |
| __be16 csum = dif_compute_csum(data, sdebug_sector_size); |
| |
| if (sdt->guard_tag != csum) { |
| pr_err("GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n", |
| (unsigned long)sector, |
| be16_to_cpu(sdt->guard_tag), |
| be16_to_cpu(csum)); |
| return 0x01; |
| } |
| if (sdebug_dif == SD_DIF_TYPE1_PROTECTION && |
| be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { |
| pr_err("REF check failed on sector %lu\n", |
| (unsigned long)sector); |
| return 0x03; |
| } |
| if (sdebug_dif == SD_DIF_TYPE2_PROTECTION && |
| be32_to_cpu(sdt->ref_tag) != ei_lba) { |
| pr_err("REF check failed on sector %lu\n", |
| (unsigned long)sector); |
| return 0x03; |
| } |
| return 0; |
|