diff options
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 2801 |
1 files changed, 1444 insertions, 1357 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index f3d69a98c725..0f9ba41e27d8 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -6,23 +6,15 @@ * 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. + * 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 * - * 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 <patmans@us.ibm.com> max_luns+scsi_level [20021031] - * Mike Anderson <andmike@us.ibm.com> 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] */ @@ -32,7 +24,7 @@ #include <linux/kernel.h> #include <linux/errno.h> -#include <linux/timer.h> +#include <linux/jiffies.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/string.h> @@ -49,6 +41,7 @@ #include <linux/interrupt.h> #include <linux/atomic.h> #include <linux/hrtimer.h> +#include <linux/uuid.h> #include <net/checksum.h> @@ -66,8 +59,9 @@ #include "sd.h" #include "scsi_logging.h" -#define SCSI_DEBUG_VERSION "1.85" -static const char *scsi_debug_version_date = "20141022"; +/* 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" @@ -102,7 +96,6 @@ static const char *scsi_debug_version_date = "20141022"; /* 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 @@ -111,7 +104,7 @@ static const char *scsi_debug_version_date = "20141022"; * (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_JDELAY 1 /* if > 0 unit is a jiffy */ #define DEF_DEV_SIZE_MB 8 #define DEF_DIF 0 #define DEF_DIX 0 @@ -131,9 +124,9 @@ static const char *scsi_debug_version_date = "20141022"; #define DEF_OPTS 0 #define DEF_OPT_BLKS 1024 #define DEF_PHYSBLK_EXP 0 -#define DEF_PTYPE 0 +#define DEF_PTYPE TYPE_DISK #define DEF_REMOVABLE false -#define DEF_SCSI_LEVEL 6 /* INQUIRY, byte2 [6->SPC-4] */ +#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 @@ -143,43 +136,54 @@ static const char *scsi_debug_version_date = "20141022"; #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) +#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 no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set + * - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set * - a RECOVERED_ERROR is simulated on successful read and write - * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. + * commands if SDEBUG_OPT_RECOVERED_ERR is set. * - a TRANSPORT_ERROR is simulated on successful read and write - * commands if SCSI_DEBUG_OPT_TRANSPORT_ERR is set. + * commands if SDEBUG_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 missing response is simulated if SDEBUG_OPT_TIMEOUT is set * - a RECOVERED_ERROR is simulated on successful read and write - * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. + * commands if SDEBUG_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). + * 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 +/* 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. */ @@ -192,11 +196,7 @@ static const char *scsi_debug_version_date = "20141022"; #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 +/* 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 */ @@ -205,21 +205,108 @@ static const char *scsi_debug_version_date = "20141022"; * or "peripheral device" addressing (value 0) */ #define SAM2_LUN_ADDRESS_METHOD 0 -/* 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/<h:c:t:l>/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) +/* 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 -#if DEF_CMD_PER_LUN > SCSI_DEBUG_CANQUEUE -#warning "Expect DEF_CMD_PER_LUN <= SCSI_DEBUG_CANQUEUE" -#endif +#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) mapped onto these indexes */ +/* 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, @@ -254,6 +341,7 @@ enum sdeb_opcode_index { 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, @@ -274,7 +362,7 @@ static const unsigned char opcode_ind_arr[256] = { 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 */ +/* 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, @@ -297,24 +385,6 @@ static const unsigned char opcode_ind_arr[256] = { 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 *); @@ -337,18 +407,6 @@ 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} }, @@ -509,61 +567,52 @@ static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEMENT + 1] = { {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 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 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 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 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 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 */ @@ -574,59 +623,10 @@ 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 unsigned char *fake_storep; /* ramdisk storage */ static struct sd_dif_tuple *dif_storep; /* protection info */ static void *map_storep; /* provisioning map */ @@ -640,7 +640,9 @@ static int dix_writes; static int dix_reads; static int dif_errors; -static DEFINE_SPINLOCK(queued_arr_lock); +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; @@ -662,19 +664,22 @@ static const int illegal_condition_result = 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}; + +/* 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 * scsi_debug_sector_size; + return fake_storep + lba * sdebug_sector_size; } static struct sd_dif_tuple *dif_store(sector_t sector) @@ -684,9 +689,6 @@ static struct sd_dif_tuple *dif_store(sector_t sector) 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; @@ -696,11 +698,11 @@ static void sdebug_max_tgts_luns(void) 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; + (sdebug_num_tgts > hpnt->this_id)) + hpnt->max_id = sdebug_num_tgts + 1; else - hpnt->max_id = scsi_debug_num_tgts; - /* scsi_debug_max_luns; */ + hpnt->max_id = sdebug_num_tgts; + /* sdebug_max_luns; */ hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1; } spin_unlock(&sdebug_host_list_lock); @@ -709,9 +711,9 @@ static void sdebug_max_tgts_luns(void) 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) +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]; @@ -725,8 +727,7 @@ mk_sense_invalid_fld(struct scsi_cmnd *scp, enum sdeb_cmd_data c_d, } 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); + scsi_build_sense_buffer(sdebug_dsense, sbuff, ILLEGAL_REQUEST, asc, 0); memset(sks, 0, sizeof(sks)); sks[0] = 0x80; if (c_d) @@ -736,7 +737,7 @@ mk_sense_invalid_fld(struct scsi_cmnd *scp, enum sdeb_cmd_data c_d, sks[0] |= 0x7 & in_bit; } put_unaligned_be16(in_byte, sks + 1); - if (scsi_debug_dsense) { + if (sdebug_dsense) { sl = sbuff[7] + 8; sbuff[7] = sl; sbuff[sl] = 0x2; @@ -744,7 +745,7 @@ mk_sense_invalid_fld(struct scsi_cmnd *scp, enum sdeb_cmd_data c_d, memcpy(sbuff + sl + 4, sks, 3); } else memcpy(sbuff + 15, sks, 3); - if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) + 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); @@ -762,23 +763,22 @@ static void mk_sense_buffer(struct scsi_cmnd *scp, int key, int asc, int asq) } memset(sbuff, 0, SCSI_SENSE_BUFFERSIZE); - scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); + scsi_build_sense_buffer(sdebug_dsense, sbuff, key, asc, asq); - if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) + 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) +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 (sdebug_verbose) { if (0x1261 == cmd) sdev_printk(KERN_INFO, dev, "%s: BLKFLSBUF [0x1261]\n", __func__); @@ -810,11 +810,9 @@ static void clear_luns_changed_on_target(struct sdebug_dev_info *devip) spin_unlock(&sdebug_host_list_lock); } -static int check_readiness(struct scsi_cmnd *SCpnt, int uas_only, - struct sdebug_dev_info * devip) +static int make_ua(struct scsi_cmnd *scp, 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) { @@ -822,40 +820,41 @@ static int check_readiness(struct scsi_cmnd *SCpnt, int uas_only, switch (k) { case SDEBUG_UA_POR: - mk_sense_buffer(SCpnt, UNIT_ATTENTION, - UA_RESET_ASC, POWER_ON_RESET_ASCQ); - if (debug) + 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(SCpnt, UNIT_ATTENTION, - UA_RESET_ASC, BUS_RESET_ASCQ); - if (debug) + 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(SCpnt, UNIT_ATTENTION, - UA_CHANGED_ASC, MODE_CHANGED_ASCQ); - if (debug) + 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(SCpnt, UNIT_ATTENTION, - UA_CHANGED_ASC, CAPACITY_CHANGED_ASCQ); - if (debug) + 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(SCpnt, UNIT_ATTENTION, - TARGET_CHANGED_ASC, MICROCODE_CHANGED_ASCQ); - if (debug) + 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(SCpnt, UNIT_ATTENTION, + mk_sense_buffer(scp, UNIT_ATTENTION, TARGET_CHANGED_ASC, MICROCODE_CHANGED_WO_RESET_ASCQ); - if (debug) + if (sdebug_verbose) cp = "microcode has been changed without reset"; break; case SDEBUG_UA_LUNS_CHANGED: @@ -864,40 +863,30 @@ static int check_readiness(struct scsi_cmnd *SCpnt, int uas_only, * 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 + * NOTE: sdebug_scsi_level does not use the same * values as struct scsi_device->scsi_level. */ - if (scsi_debug_scsi_level >= 6) /* SPC-4 and above */ + if (sdebug_scsi_level >= 6) /* SPC-4 and above */ clear_luns_changed_on_target(devip); - mk_sense_buffer(SCpnt, UNIT_ATTENTION, + mk_sense_buffer(scp, UNIT_ATTENTION, TARGET_CHANGED_ASC, LUNS_CHANGED_ASCQ); - if (debug) + if (sdebug_verbose) cp = "reported luns data has changed"; break; default: - pr_warn("%s: unexpected unit attention code=%d\n", - __func__, k); - if (debug) + pr_warn("unexpected unit attention code=%d\n", k); + if (sdebug_verbose) cp = "unknown"; break; } clear_bit(k, devip->uas_bm); - if (debug) - sdev_printk(KERN_INFO, SCpnt->device, + if (sdebug_verbose) + sdev_printk(KERN_INFO, scp->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; } @@ -911,7 +900,7 @@ static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, if (!sdb->length) return 0; if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) - return (DID_ERROR << 16); + return DID_ERROR << 16; act_len = sg_copy_from_buffer(sdb->table.sgl, sdb->table.nents, arr, arr_len); @@ -935,13 +924,17 @@ static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, static const char * inq_vendor_id = "Linux "; static const char * inq_product_id = "scsi_debug "; -static const char *inq_product_rev = "0184"; /* version less '.' */ +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_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) +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]; @@ -958,19 +951,25 @@ static int inquiry_evpd_83(unsigned char * arr, int port_group_id, 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; + 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 */ @@ -981,47 +980,35 @@ static int inquiry_evpd_83(unsigned char * arr, int port_group_id, arr[num++] = 0x0; arr[num++] = 0x1; /* relative port A */ } - /* NAA-5, Target port identifier */ + /* 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; - 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 */ + 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; - arr[num++] = (port_group_id >> 8) & 0xff; - arr[num++] = port_group_id & 0xff; - /* NAA-5, Target device identifier */ + 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; - 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; + 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.52222220", 12); + memcpy(arr + num, "naa.32222220", 12); num += 12; snprintf(b, sizeof(b), "%08X", target_dev_id); memcpy(arr + num, b, 8); @@ -1031,7 +1018,6 @@ static int inquiry_evpd_83(unsigned char * arr, int port_group_id, return num; } - static unsigned char vpd84_data[] = { /* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, 0x22,0x22,0x22,0x0,0xbb,0x1, @@ -1039,14 +1025,14 @@ static unsigned char vpd84_data[] = { }; /* Software interface identification VPD page */ -static int inquiry_evpd_84(unsigned char * arr) +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_evpd_85(unsigned char * arr) +static int inquiry_vpd_85(unsigned char *arr) { int num = 0; const char * na1 = "https://www.kernel.org/config"; @@ -1081,7 +1067,7 @@ static int inquiry_evpd_85(unsigned char * arr) } /* SCSI ports VPD page */ -static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) +static int inquiry_vpd_88(unsigned char *arr, int target_dev_id) { int num = 0; int port_a, port_b; @@ -1101,15 +1087,8 @@ static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) 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; - + put_unaligned_be64(naa3_comp_a + port_a, arr + num); + num += 8; arr[num++] = 0x0; /* reserved */ arr[num++] = 0x0; /* reserved */ arr[num++] = 0x0; @@ -1123,14 +1102,8 @@ static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) 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; < |