diff options
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 2754 |
1 files changed, 1833 insertions, 921 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index d1777a9a962..1328a262107 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -12,7 +12,7 @@ * SAS disks. * * - * For documentation see http://www.torque.net/sg/sdebug26.html + * 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] @@ -30,6 +30,7 @@ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/timer.h> +#include <linux/slab.h> #include <linux/types.h> #include <linux/string.h> #include <linux/genhd.h> @@ -39,27 +40,36 @@ #include <linux/vmalloc.h> #include <linux/moduleparam.h> #include <linux/scatterlist.h> - #include <linux/blkdev.h> -#include "scsi.h" +#include <linux/crc-t10dif.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_dbg.h> -#include <linux/stat.h> - +#include "sd.h" #include "scsi_logging.h" -#include "scsi_debug.h" -#define SCSI_DEBUG_VERSION "1.81" -static const char * scsi_debug_version_date = "20070104"; +#define SCSI_DEBUG_VERSION "1.82" +static const char * scsi_debug_version_date = "20100324"; /* 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 ADDR_OUT_OF_RANGE 0x21 +#define INVALID_COMMAND_OPCODE 0x20 #define INVALID_FIELD_IN_CDB 0x24 #define INVALID_FIELD_IN_PARAM_LIST 0x26 #define POWERON_RESET 0x29 @@ -80,18 +90,36 @@ static const char * scsi_debug_version_date = "20070104"; /* With these defaults, this driver will make 1 host with 1 target * (id 0) containing 1 logical unit (lun 0). That is 1 device. */ +#define DEF_ATO 1 #define DEF_DELAY 1 #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_LBPU 0 +#define DEF_LBPWS 0 +#define DEF_LBPWS10 0 +#define DEF_LBPRZ 1 +#define DEF_LOWEST_ALIGNED 0 +#define DEF_NO_LUN_0 0 #define DEF_NUM_PARTS 0 #define DEF_OPTS 0 -#define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ +#define DEF_OPT_BLKS 64 +#define DEF_PHYSBLK_EXP 0 #define DEF_PTYPE 0 -#define DEF_D_SENSE 0 -#define DEF_NO_LUN_0 0 +#define DEF_REMOVABLE false +#define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ +#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_FAKE_RW 0 #define DEF_VPD_USE_HOSTNO 1 +#define DEF_WRITESAME_LENGTH 0xFFFF /* bit mask values for scsi_debug_opts */ #define SCSI_DEBUG_OPT_NOISE 1 @@ -99,6 +127,10 @@ static const char * scsi_debug_version_date = "20070104"; #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 256 /* When "every_nth" > 0 then modulo "every_nth" commands: * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set * - a RECOVERED_ERROR is simulated on successful read and write @@ -119,34 +151,58 @@ static const char * scsi_debug_version_date = "20070104"; /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this * sector on read commands: */ #define OPT_MEDIUM_ERR_ADDR 0x1234 /* that's sector 4660 in decimal */ +#define OPT_MEDIUM_ERR_NUM 10 /* number of consecutive medium errs */ /* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1) * or "peripheral device" addressing (value 0) */ #define SAM2_LUN_ADDRESS_METHOD 0 #define SAM2_WLUN_REPORT_LUNS 0xc101 +/* Can queue up to this number of commands. Typically commands that + * that have a non-zero delay are queued. */ +#define SCSI_DEBUG_CANQUEUE 255 + 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 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_scsi_level = DEF_SCSI_LEVEL; +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_dsense = DEF_D_SENSE; -static int scsi_debug_no_lun_0 = DEF_NO_LUN_0; +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_fake_rw = DEF_FAKE_RW; 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 int scsi_debug_cmnd_count = 0; #define DEV_READONLY(TGT) (0) -#define DEV_REMOVEABLE(TGT) (0) -static unsigned int sdebug_store_size; /* in bytes */ static unsigned int sdebug_store_sectors; static sector_t sdebug_capacity; /* in sectors */ @@ -156,15 +212,17 @@ static int sdebug_heads; /* heads per disk */ static int sdebug_cylinders_per; /* cylinders per surface */ static int sdebug_sectors_per; /* sectors per cylinder */ -/* default sector size is 512 bytes, 2**9 bytes */ -#define POW2_SECT_SIZE 9 -#define SECT_SIZE (1 << POW2_SECT_SIZE) -#define SECT_SIZE_PER(TGT) SECT_SIZE - #define SDEBUG_MAX_PARTS 4 #define SDEBUG_SENSE_LEN 32 +#define SCSI_DEBUG_MAX_CMD_LEN 32 + +static unsigned int scsi_debug_lbp(void) +{ + return scsi_debug_lbpu | scsi_debug_lbpws | scsi_debug_lbpws10; +} + struct sdebug_dev_info { struct list_head dev_list; unsigned char sense_buff[SDEBUG_SENSE_LEN]; /* weak nexus */ @@ -202,44 +260,24 @@ struct sdebug_queued_cmd { }; static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; -static struct scsi_host_template sdebug_driver_template = { - .proc_info = scsi_debug_proc_info, - .name = "SCSI DEBUG", - .info = scsi_debug_info, - .slave_alloc = scsi_debug_slave_alloc, - .slave_configure = scsi_debug_slave_configure, - .slave_destroy = scsi_debug_slave_destroy, - .ioctl = scsi_debug_ioctl, - .queuecommand = scsi_debug_queuecommand, - .eh_abort_handler = scsi_debug_abort, - .eh_bus_reset_handler = scsi_debug_bus_reset, - .eh_device_reset_handler = scsi_debug_device_reset, - .eh_host_reset_handler = scsi_debug_host_reset, - .bios_param = scsi_debug_biosparam, - .can_queue = SCSI_DEBUG_CANQUEUE, - .this_id = 7, - .sg_tablesize = 256, - .cmd_per_lun = 16, - .max_sectors = 0xffff, - .unchecked_isa_dma = 0, - .use_clustering = DISABLE_CLUSTERING, - .module = THIS_MODULE, -}; - 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 = 0; static int num_dev_resets = 0; static int num_bus_resets = 0; static int num_host_resets = 0; +static int dix_writes; +static int dix_reads; +static int dif_errors; static DEFINE_SPINLOCK(queued_arr_lock); static DEFINE_RWLOCK(atomic_rw); static char sdebug_proc_name[] = "scsi_debug"; -static int sdebug_driver_probe(struct device *); -static int sdebug_driver_remove(struct device *); static struct bus_type pseudo_lld_bus; static struct device_driver sdebug_driverfs_driver = { @@ -250,335 +288,122 @@ static struct device_driver sdebug_driverfs_driver = { 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 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}; -/* function declarations */ -static int resp_inquiry(struct scsi_cmnd * SCpnt, int target, - struct sdebug_dev_info * devip); -static int resp_requests(struct scsi_cmnd * SCpnt, - struct sdebug_dev_info * devip); -static int resp_start_stop(struct scsi_cmnd * scp, - struct sdebug_dev_info * devip); -static int resp_report_tgtpgs(struct scsi_cmnd * scp, - struct sdebug_dev_info * devip); -static int resp_readcap(struct scsi_cmnd * SCpnt, - struct sdebug_dev_info * devip); -static int resp_readcap16(struct scsi_cmnd * SCpnt, - struct sdebug_dev_info * devip); -static int resp_mode_sense(struct scsi_cmnd * scp, int target, - struct sdebug_dev_info * devip); -static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, - struct sdebug_dev_info * devip); -static int resp_log_sense(struct scsi_cmnd * scp, - struct sdebug_dev_info * devip); -static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, - unsigned int num, struct sdebug_dev_info * devip); -static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, - unsigned int num, struct sdebug_dev_info * devip); -static int resp_report_luns(struct scsi_cmnd * SCpnt, - struct sdebug_dev_info * devip); -static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, - unsigned int num, struct sdebug_dev_info *devip); -static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, - int arr_len); -static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, - int max_arr_len); -static void timer_intr_handler(unsigned long); -static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev); -static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, - int asc, int asq); -static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, - struct sdebug_dev_info * devip); -static int schedule_resp(struct scsi_cmnd * cmnd, - struct sdebug_dev_info * devip, - done_funct_t done, int scsi_result, int delta_jiff); -static void __init sdebug_build_parts(unsigned char * ramp); -static void __init init_all_queued(void); -static void stop_all_queued(void); -static int stop_queued_cmnd(struct scsi_cmnd * cmnd); -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_evpd_88(unsigned char * arr, int target_dev_id); -static int do_create_driverfs_files(void); -static void do_remove_driverfs_files(void); +static void *fake_store(unsigned long long lba) +{ + lba = do_div(lba, sdebug_store_sectors); + + return fake_storep + lba * scsi_debug_sector_size; +} + +static struct sd_dif_tuple *dif_store(sector_t sector) +{ + sector = do_div(sector, sdebug_store_sectors); + + return dif_storep + sector; +} static int sdebug_add_adapter(void); static void sdebug_remove_adapter(void); -static void sdebug_max_tgts_luns(void); -static struct device pseudo_primary; -static struct bus_type pseudo_lld_bus; - -static void get_data_transfer_info(unsigned char *cmd, - unsigned long long *lba, unsigned int *num) +static void sdebug_max_tgts_luns(void) { - int i; + struct sdebug_host_info *sdbg_host; + struct Scsi_Host *hpnt; - switch (*cmd) { - case WRITE_16: - case READ_16: - for (*lba = 0, i = 0; i < 8; ++i) { - if (i > 0) - *lba <<= 8; - *lba += cmd[2 + i]; - } - *num = cmd[13] + (cmd[12] << 8) + - (cmd[11] << 16) + (cmd[10] << 24); - break; - case WRITE_12: - case READ_12: - *lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); - *num = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); - break; - case WRITE_10: - case READ_10: - case XDWRITEREAD_10: - *lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); - *num = cmd[8] + (cmd[7] << 8); - break; - case WRITE_6: - case READ_6: - *lba = cmd[3] + (cmd[2] << 8) + ((cmd[1] & 0x1f) << 16); - *num = (0 == cmd[4]) ? 256 : cmd[4]; - break; - default: - break; + spin_lock(&sdebug_host_list_lock); + list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { + hpnt = sdbg_host->shost; + if ((hpnt->this_id >= 0) && + (scsi_debug_num_tgts > hpnt->this_id)) + hpnt->max_id = scsi_debug_num_tgts + 1; + else + hpnt->max_id = scsi_debug_num_tgts; + /* scsi_debug_max_luns; */ + hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; } + spin_unlock(&sdebug_host_list_lock); } -static -int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) +static void mk_sense_buffer(struct sdebug_dev_info *devip, int key, + int asc, int asq) { - unsigned char *cmd = (unsigned char *) SCpnt->cmnd; - int len, k; - unsigned int num; - unsigned long long lba; - int errsts = 0; - int target = SCpnt->device->id; - struct sdebug_dev_info * devip = NULL; - int inj_recovered = 0; - int inj_transport = 0; - int delay_override = 0; - - if (done == NULL) - return 0; /* assume mid level reprocessing command */ + unsigned char *sbuff; - scsi_set_resid(SCpnt, 0); - if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { - printk(KERN_INFO "scsi_debug: cmd "); - for (k = 0, len = SCpnt->cmd_len; k < len; ++k) - printk("%02x ", (int)cmd[k]); - printk("\n"); - } - if(target == sdebug_driver_template.this_id) { - printk(KERN_INFO "scsi_debug: initiator's id used as " - "target!\n"); - return schedule_resp(SCpnt, NULL, done, - DID_NO_CONNECT << 16, 0); - } + sbuff = devip->sense_buff; + memset(sbuff, 0, SDEBUG_SENSE_LEN); - if ((SCpnt->device->lun >= scsi_debug_max_luns) && - (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) - return schedule_resp(SCpnt, NULL, done, - DID_NO_CONNECT << 16, 0); - devip = devInfoReg(SCpnt->device); - if (NULL == devip) - return schedule_resp(SCpnt, NULL, done, - DID_NO_CONNECT << 16, 0); + scsi_build_sense_buffer(scsi_debug_dsense, sbuff, key, asc, asq); - if ((scsi_debug_every_nth != 0) && - (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { - scsi_debug_cmnd_count = 0; - if (scsi_debug_every_nth < -1) - scsi_debug_every_nth = -1; - if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) - return 0; /* ignore command causing timeout */ - else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) - inj_recovered = 1; /* to reads and writes below */ - else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) - inj_transport = 1; /* to reads and writes below */ - } + if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) + printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " + "[0x%x,0x%x,0x%x]\n", key, asc, asq); +} - if (devip->wlun) { - switch (*cmd) { - case INQUIRY: - case REQUEST_SENSE: - case TEST_UNIT_READY: - case REPORT_LUNS: - break; /* only allowable wlun commands */ - default: - if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) - printk(KERN_INFO "scsi_debug: Opcode: 0x%x " - "not supported for wlun\n", *cmd); - mk_sense_buffer(devip, ILLEGAL_REQUEST, - INVALID_OPCODE, 0); - errsts = check_condition_result; - return schedule_resp(SCpnt, devip, done, errsts, - 0); - } - } +static void get_data_transfer_info(unsigned char *cmd, + unsigned long long *lba, unsigned int *num, + u32 *ei_lba) +{ + *ei_lba = 0; switch (*cmd) { - case INQUIRY: /* mandatory, ignore unit attention */ - delay_override = 1; - errsts = resp_inquiry(SCpnt, target, devip); - break; - case REQUEST_SENSE: /* mandatory, ignore unit attention */ - delay_override = 1; - errsts = resp_requests(SCpnt, devip); - break; - case REZERO_UNIT: /* actually this is REWIND for SSC */ - case START_STOP: - errsts = resp_start_stop(SCpnt, devip); - break; - case ALLOW_MEDIUM_REMOVAL: - if ((errsts = check_readiness(SCpnt, 1, devip))) - break; - if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) - printk(KERN_INFO "scsi_debug: Medium removal %s\n", - cmd[4] ? "inhibited" : "enabled"); - break; - case SEND_DIAGNOSTIC: /* mandatory */ - errsts = check_readiness(SCpnt, 1, devip); - break; - case TEST_UNIT_READY: /* mandatory */ - delay_override = 1; - errsts = check_readiness(SCpnt, 0, devip); - break; - case RESERVE: - errsts = check_readiness(SCpnt, 1, devip); - break; - case RESERVE_10: - errsts = check_readiness(SCpnt, 1, devip); - break; - case RELEASE: - errsts = check_readiness(SCpnt, 1, devip); - break; - case RELEASE_10: - errsts = check_readiness(SCpnt, 1, devip); - break; - case READ_CAPACITY: - errsts = resp_readcap(SCpnt, devip); - break; - case SERVICE_ACTION_IN: - if (SAI_READ_CAPACITY_16 != cmd[1]) { - mk_sense_buffer(devip, ILLEGAL_REQUEST, - INVALID_OPCODE, 0); - errsts = check_condition_result; - break; - } - errsts = resp_readcap16(SCpnt, devip); - break; - case MAINTENANCE_IN: - if (MI_REPORT_TARGET_PGS != cmd[1]) { - mk_sense_buffer(devip, ILLEGAL_REQUEST, - INVALID_OPCODE, 0); - errsts = check_condition_result; - break; - } - errsts = resp_report_tgtpgs(SCpnt, devip); + case VARIABLE_LENGTH_CMD: + *lba = (u64)cmd[19] | (u64)cmd[18] << 8 | + (u64)cmd[17] << 16 | (u64)cmd[16] << 24 | + (u64)cmd[15] << 32 | (u64)cmd[14] << 40 | + (u64)cmd[13] << 48 | (u64)cmd[12] << 56; + + *ei_lba = (u32)cmd[23] | (u32)cmd[22] << 8 | + (u32)cmd[21] << 16 | (u32)cmd[20] << 24; + + *num = (u32)cmd[31] | (u32)cmd[30] << 8 | (u32)cmd[29] << 16 | + (u32)cmd[28] << 24; break; + + case WRITE_SAME_16: + case WRITE_16: case READ_16: - case READ_12: - case READ_10: - case READ_6: - if ((errsts = check_readiness(SCpnt, 0, devip))) - break; - if (scsi_debug_fake_rw) - break; - get_data_transfer_info(cmd, &lba, &num); - errsts = resp_read(SCpnt, lba, num, devip); - if (inj_recovered && (0 == errsts)) { - mk_sense_buffer(devip, RECOVERED_ERROR, - THRESHOLD_EXCEEDED, 0); - errsts = check_condition_result; - } else if (inj_transport && (0 == errsts)) { - mk_sense_buffer(devip, ABORTED_COMMAND, - TRANSPORT_PROBLEM, ACK_NAK_TO); - errsts = check_condition_result; - } - break; - case REPORT_LUNS: /* mandatory, ignore unit attention */ - delay_override = 1; - errsts = resp_report_luns(SCpnt, devip); - break; - case VERIFY: /* 10 byte SBC-2 command */ - errsts = check_readiness(SCpnt, 0, devip); + *lba = (u64)cmd[9] | (u64)cmd[8] << 8 | + (u64)cmd[7] << 16 | (u64)cmd[6] << 24 | + (u64)cmd[5] << 32 | (u64)cmd[4] << 40 | + (u64)cmd[3] << 48 | (u64)cmd[2] << 56; + + *num = (u32)cmd[13] | (u32)cmd[12] << 8 | (u32)cmd[11] << 16 | + (u32)cmd[10] << 24; break; - case WRITE_16: case WRITE_12: - case WRITE_10: - case WRITE_6: - if ((errsts = check_readiness(SCpnt, 0, devip))) - break; - if (scsi_debug_fake_rw) - break; - get_data_transfer_info(cmd, &lba, &num); - errsts = resp_write(SCpnt, lba, num, devip); - if (inj_recovered && (0 == errsts)) { - mk_sense_buffer(devip, RECOVERED_ERROR, - THRESHOLD_EXCEEDED, 0); - errsts = check_condition_result; - } - break; - case MODE_SENSE: - case MODE_SENSE_10: - errsts = resp_mode_sense(SCpnt, target, devip); - break; - case MODE_SELECT: - errsts = resp_mode_select(SCpnt, 1, devip); - break; - case MODE_SELECT_10: - errsts = resp_mode_select(SCpnt, 0, devip); - break; - case LOG_SENSE: - errsts = resp_log_sense(SCpnt, devip); - break; - case SYNCHRONIZE_CACHE: - delay_override = 1; - errsts = check_readiness(SCpnt, 0, devip); - break; - case WRITE_BUFFER: - errsts = check_readiness(SCpnt, 1, devip); + case READ_12: + *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | + (u32)cmd[2] << 24; + + *num = (u32)cmd[9] | (u32)cmd[8] << 8 | (u32)cmd[7] << 16 | + (u32)cmd[6] << 24; break; + case WRITE_SAME: + case WRITE_10: + case READ_10: case XDWRITEREAD_10: - if (!scsi_bidi_cmnd(SCpnt)) { - mk_sense_buffer(devip, ILLEGAL_REQUEST, - INVALID_FIELD_IN_CDB, 0); - errsts = check_condition_result; - break; - } + *lba = (u32)cmd[5] | (u32)cmd[4] << 8 | (u32)cmd[3] << 16 | + (u32)cmd[2] << 24; - errsts = check_readiness(SCpnt, 0, devip); - if (errsts) - break; - if (scsi_debug_fake_rw) - break; - get_data_transfer_info(cmd, &lba, &num); - errsts = resp_read(SCpnt, lba, num, devip); - if (errsts) - break; - errsts = resp_write(SCpnt, lba, num, devip); - if (errsts) - break; - errsts = resp_xdwriteread(SCpnt, lba, num, devip); + *num = (u32)cmd[8] | (u32)cmd[7] << 8; + break; + case WRITE_6: + case READ_6: + *lba = (u32)cmd[3] | (u32)cmd[2] << 8 | + (u32)(cmd[1] & 0x1f) << 16; + *num = (0 == cmd[4]) ? 256 : cmd[4]; break; default: - if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) - printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " - "supported\n", *cmd); - if ((errsts = check_readiness(SCpnt, 1, devip))) - break; /* Unit attention takes precedence */ - mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); - errsts = check_condition_result; break; } - return schedule_resp(SCpnt, devip, done, errsts, - (delay_override ? 0 : scsi_debug_delay)); } static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) @@ -613,81 +438,34 @@ static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, } /* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ -static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, +static int fill_from_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, int arr_len) { - int k, req_len, act_len, len, active; - void * kaddr; - void * kaddr_off; - struct scatterlist *sg; + int act_len; struct scsi_data_buffer *sdb = scsi_in(scp); if (!sdb->length) return 0; - if (!sdb->table.sgl) - return (DID_ERROR << 16); if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) return (DID_ERROR << 16); - active = 1; - req_len = act_len = 0; - for_each_sg(sdb->table.sgl, sg, sdb->table.nents, k) { - if (active) { - kaddr = (unsigned char *) - kmap_atomic(sg_page(sg), KM_USER0); - if (NULL == kaddr) - return (DID_ERROR << 16); - kaddr_off = (unsigned char *)kaddr + sg->offset; - len = sg->length; - if ((req_len + len) > arr_len) { - active = 0; - len = arr_len - req_len; - } - memcpy(kaddr_off, arr + req_len, len); - kunmap_atomic(kaddr, KM_USER0); - act_len += len; - } - req_len += sg->length; - } - if (sdb->resid) - sdb->resid -= act_len; - else - sdb->resid = req_len - act_len; + + 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 max_arr_len) +static int fetch_to_dev_buffer(struct scsi_cmnd *scp, unsigned char *arr, + int arr_len) { - int k, req_len, len, fin; - void * kaddr; - void * kaddr_off; - struct scatterlist * sg; - - if (0 == scsi_bufflen(scp)) + if (!scsi_bufflen(scp)) return 0; - if (NULL == scsi_sglist(scp)) - return -1; if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) return -1; - req_len = fin = 0; - scsi_for_each_sg(scp, sg, scsi_sg_count(scp), k) { - kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); - if (NULL == kaddr) - return -1; - kaddr_off = (unsigned char *)kaddr + sg->offset; - len = sg->length; - if ((req_len + len) > max_arr_len) { - len = max_arr_len - req_len; - fin = 1; - } - memcpy(arr + req_len, kaddr_off, len); - kunmap_atomic(kaddr, KM_USER0); - if (fin) - return req_len + len; - req_len += sg->length; - } - return req_len; + + return scsi_sg_copy_to_buffer(scp, arr, arr_len); } @@ -942,24 +720,93 @@ static int inquiry_evpd_89(unsigned char * arr) } +/* Block limits VPD page (SBC-3) */ static unsigned char vpdb0_data[] = { - /* from 4th byte */ 0,0,0,4, - 0,0,0x4,0, - 0,0,0,64, + /* 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, }; static int inquiry_evpd_b0(unsigned char * arr) { + unsigned int gran; + memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); + + /* Optimal transfer length granularity */ + gran = 1 << scsi_debug_physblk_exp; + arr[2] = (gran >> 8) & 0xff; + arr[3] = gran & 0xff; + + /* Maximum Transfer Length */ if (sdebug_store_sectors > 0x400) { arr[4] = (sdebug_store_sectors >> 24) & 0xff; arr[5] = (sdebug_store_sectors >> 16) & 0xff; arr[6] = (sdebug_store_sectors >> 8) & 0xff; arr[7] = sdebug_store_sectors & 0xff; } + + /* Optimal Transfer Length */ + put_unaligned_be32(scsi_debug_opt_blks, &arr[8]); + + if (scsi_debug_lbpu) { + /* Maximum Unmap LBA Count */ + put_unaligned_be32(scsi_debug_unmap_max_blocks, &arr[16]); + + /* Maximum Unmap Block Descriptor Count */ + put_unaligned_be32(scsi_debug_unmap_max_desc, &arr[20]); + } + + /* Unmap Granularity Alignment */ + if (scsi_debug_unmap_alignment) { + put_unaligned_be32(scsi_debug_unmap_alignment, &arr[28]); + arr[28] |= 0x80; /* UGAVALID */ + } + + /* Optimal Unmap Granularity */ + put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]); + + /* Maximum WRITE SAME Length */ + put_unaligned_be64(scsi_debug_write_same_length, &arr[32]); + + return 0x3c; /* Mandatory page length for Logical Block Provisioning */ + return sizeof(vpdb0_data); } +/* Block device characteristics VPD page (SBC-3) */ +static int inquiry_evpd_b1(unsigned char *arr) +{ + memset(arr, 0, 0x3c); + arr[0] = 0; + arr[1] = 1; /* non rotating medium (e.g. solid state) */ + arr[2] = 0; + arr[3] = 5; /* less than 1.8" */ + + return 0x3c; +} + +/* Logical block provisioning VPD page (SBC-3) */ +static int inquiry_evpd_b2(unsigned char *arr) +{ + memset(arr, 0, 0x4); + arr[0] = 0; /* threshold exponent */ + + if (scsi_debug_lbpu) + arr[1] = 1 << 7; + + if (scsi_debug_lbpws) + arr[1] |= 1 << 6; + + if (scsi_debug_lbpws10) + arr[1] |= 1 << 5; + + if (scsi_debug_lbprz) + arr[1] |= 1 << 2; + + return 0x4; +} #define SDEBUG_LONG_INQ_SZ 96 #define SDEBUG_MAX_INQ_ARR_SZ 584 @@ -1015,6 +862,9 @@ static int resp_inquiry(struct scsi_cmnd * scp, int target, arr[n++] = 0x88; /* SCSI ports */ arr[n++] = 0x89; /* ATA information */ arr[n++] = 0xb0; /* Block limits (SBC) */ + arr[n++] = 0xb1; /* Block characteristics (SBC) */ + if (scsi_debug_lbp()) /* Logical Block Prov. (SBC) */ + arr[n++] = 0xb2; arr[3] = n - 4; /* number of supported VPD pages */ } else if (0x80 == cmd[2]) { /* unit serial number */ arr[1] = cmd[2]; /*sanity */ @@ -1034,7 +884,12 @@ static int resp_inquiry(struct scsi_cmnd * scp, int target, } else if (0x86 == cmd[2]) { /* extended inquiry */ arr[1] = cmd[2]; /*sanity */ arr[3] = 0x3c; /* number of following entries */ - arr[4] = 0x0; /* no protection stuff */ + if (scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) + arr[4] = 0x4; /* SPT: GRD_CHK:1 */ + else if (scsi_debug_dif) + arr[4] = 0x5; /* SPT: GRD_CHK:1, REF_CHK:1 */ + else + arr[4] = 0x0; /* no protection stuff */ arr[5] = 0x7; /* head of q, ordered + simple q's */ } else if (0x87 == cmd[2]) { /* mode page policy */ arr[1] = cmd[2]; /*sanity */ @@ -1054,6 +909,12 @@ static int resp_inquiry(struct scsi_cmnd * scp, int target, } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ arr[1] = cmd[2]; /*sanity */ arr[3] = inquiry_evpd_b0(&arr[4]); + } else if (0xb1 == cmd[2]) { /* Block characteristics (SBC) */ + arr[1] = cmd[2]; /*sanity */ + arr[3] = inquiry_evpd_b1(&arr[4]); + } else if (0xb2 == cmd[2]) { /* Logical Block Prov. (SBC) */ + arr[1] = cmd[2]; /*sanity */ + arr[3] = inquiry_evpd_b2(&arr[4]); } else { /* Illegal request, invalid field in cdb */ mk_sense_buffer(devip, ILLEGAL_REQUEST, @@ -1068,10 +929,11 @@ static int resp_inquiry(struct scsi_cmnd * scp, int target, return ret; } /* drops through here for a standard inquiry */ - arr[1] = DEV_REMOVEABLE(target) ? 0x80 : 0; /* Removable disk */ + arr[1] = scsi_debug_removable ? 0x80 : 0; /* Removable disk */ arr[2] = scsi_debug_scsi_level; arr[3] = 2; /* response_data_format==2 */ arr[4] = SDEBUG_LONG_INQ_SZ - 5; + arr[5] = scsi_debug_dif ? 1 : 0; /* PROTECT bit */ if (0 == scsi_debug_vpd_use_hostno) arr[5] = 0x10; /* claim: implicit TGPS */ arr[6] = 0x10; /* claim: MultiP */ @@ -1159,6 +1021,15 @@ static int resp_start_stop(struct scsi_cmnd * scp, return 0; } +static sector_t get_sdebug_capacity(void) +{ + if (scsi_debug_virtual_gb > 0) + return (sector_t)scsi_debug_virtual_gb * + (1073741824 / scsi_debug_sector_size); + else + return sdebug_store_sectors; +} + #define SDEBUG_READCAP_ARR_SZ 8 static int resp_readcap(struct scsi_cmnd * scp, struct sdebug_dev_info * devip) @@ -1170,11 +1041,7 @@ static int resp_readcap(struct scsi_cmnd * scp, if ((errsts = check_readiness(scp, 1, devip))) return errsts; /* following just in case virtual_gb changed */ - if (scsi_debug_virtual_gb > 0) { - sdebug_capacity = 2048 * 1024; - sdebug_capacity *= scsi_debug_virtual_gb; - } else - sdebug_capacity = sdebug_store_sectors; + sdebug_capacity = get_sdebug_capacity(); memset(arr, 0, SDEBUG_READCAP_ARR_SZ); if (sdebug_capacity < 0xffffffff) { capac = (unsigned int)sdebug_capacity - 1; @@ -1188,8 +1055,8 @@ static int resp_readcap(struct scsi_cmnd * scp, arr[2] = 0xff; arr[3] = 0xff; } - arr[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; - arr[7] = SECT_SIZE_PER(target) & 0xff; + arr[6] = (scsi_debug_sector_size >> 8) & 0xff; + arr[7] = scsi_debug_sector_size & 0xff; return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); } @@ -1207,19 +1074,31 @@ static int resp_readcap16(struct scsi_cmnd * scp, alloc_len = ((cmd[10] << 24) + (cmd[11] << 16) + (cmd[12] << 8) + cmd[13]); /* following just in case virtual_gb changed */ - if (scsi_debug_virtual_gb > 0) { - sdebug_capacity = 2048 * 1024; - sdebug_capacity *= scsi_debug_virtual_gb; - } else - sdebug_capacity = sdebug_store_sectors; + sdebug_capacity = get_sdebug_capacity(); memset(arr, 0, SDEBUG_READCAP16_ARR_SZ); capac = sdebug_capacity - 1; for (k = 0; k < 8; ++k, capac >>= 8) arr[7 - k] = capac & 0xff; - arr[8] = (SECT_SIZE_PER(target) >> 24) & 0xff; - arr[9] = (SECT_SIZE_PER(target) >> 16) & 0xff; - arr[10] = (SECT_SIZE_PER(target) >> 8) & 0xff; - arr[11] = SECT_SIZE_PER(target) & 0xff; + arr[8] = (scsi_debug_sector_size >> 24) & 0xff; + arr[9] = (scsi_debug_sector_size >> 16) & 0xff; + arr[10] = (scsi_debug_sector_size >> 8) & 0xff; + arr[11] = scsi_debug_sector_size & 0xff; + arr[13] = scsi_debug_physblk_exp & 0xf; + arr[14] = (scsi_debug_lowest_aligned >> 8) & 0x3f; + + if (scsi_debug_lbp()) { + arr[14] |= 0x80; /* LBPME */ + if (scsi_debug_lbprz) + arr[14] |= 0x40; /* LBPRZ */ + } + + arr[15] = scsi_debug_lowest_aligned & 0xff; + + if (scsi_debug_dif) { + arr[12] = (scsi_debug_dif - 1) << 1; /* P_TYPE */ + arr[12] |= 1; /* PROT_EN */ + } + return fill_from_dev_buffer(scp, arr, min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); } @@ -1333,20 +1212,20 @@ static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) static int resp_format_pg(unsigned char * p, int pcontrol, int target) { /* Format device page for mode_sense */ - unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0x40, 0, 0, 0}; - - memcpy(p, format_pg, sizeof(format_pg)); - p[10] = (sdebug_sectors_per >> 8) & 0xff; - p[11] = sdebug_sectors_per & 0xff; - p[12] = (SECT_SIZE >> 8) & 0xff; - p[13] = SECT_SIZE & 0xff; - if (DEV_REMOVEABLE(target)) - p[20] |= 0x20; /* should agree with INQUIRY */ - if (1 == pcontrol) - memset(p + 2, 0, sizeof(format_pg) - 2); - return sizeof(format_pg); + unsigned char format_pg[] = {0x3, 0x16, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0x40, 0, 0, 0}; + + memcpy(p, format_pg, sizeof(format_pg)); + p[10] = (sdebug_sectors_per >> 8) & 0xff; + p[11] = sdebug_sectors_per & 0xff; + p[12] = (scsi_debug_sector_size >> 8) & 0xff; + p[13] = scsi_debug_sector_size & 0xff; + if (scsi_debug_removable) + p[20] |= 0x20; /* should agree with INQUIRY */ + if (1 == pcontrol) + memset(p + 2, 0, sizeof(format_pg) - 2); + return sizeof(format_pg); } static int resp_caching_pg(unsigned char * p, int pcontrol, int target) @@ -1371,6 +1250,10 @@ static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) ctrl_m_pg[2] |= 0x4; else ctrl_m_pg[2] &= ~0x4; + + if (scsi_debug_ato) + ctrl_m_pg[5] |= 0x80; /* ATO=1 */ + memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); if (1 == pcontrol) memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); @@ -1505,13 +1388,9 @@ static int resp_mode_sense(struct scsi_cmnd * scp, int target, offset = 8; } ap = arr + offset; - if ((bd_len > 0) && (0 == sdebug_capacity)) { - if (scsi_debug_virtual_gb > 0) { - sdebug_capacity = 2048 * 1024; - sdebug_capacity *= scsi_debug_virtual_gb; - } else - sdebug_capacity = sdebug_store_sectors; - } + if ((bd_len > 0) && (!sdebug_capacity)) + sdebug_capacity = get_sdebug_capacity(); + if (8 == bd_len) { if (sdebug_capacity > 0xfffffffe) { ap[0] = 0xff; @@ -1524,8 +1403,8 @@ static int resp_mode_sense(struct scsi_cmnd * scp, int target, ap[2] = (sdebug_capacity >> 8) & 0xff; ap[3] = sdebug_capacity & 0xff; } - ap[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; - ap[7] = SECT_SIZE_PER(target) & 0xff; + ap[6] = (scsi_debug_sector_size >> 8) & 0xff; + ap[7] = scsi_debug_sector_size & 0xff; offset += bd_len; ap = arr + offset; } else if (16 == bd_len) { @@ -1533,10 +1412,10 @@ static int resp_mode_sense(struct scsi_cmnd * scp, int target, for (k = 0; k < 8; ++k, capac >>= 8) ap[7 - k] = capac & 0xff; - ap[12] = (SECT_SIZE_PER(target) >> 24) & 0xff; - ap[13] = (SECT_SIZE_PER(target) >> 16) & 0xff; - ap[14] = (SECT_SIZE_PER(target) >> 8) & 0xff; - ap[15] = SECT_SIZE_PER(target) & 0xff; + ap[12] = (scsi_debug_sector_size >> 24) & 0xff; + ap[13] = (scsi_debug_sector_size >> 16) & 0xff; + ap[14] = (scsi_debug_sector_size >> 8) & 0xff; + ap[15] = scsi_debug_sector_size & 0xff; offset += bd_len; ap = arr + offset; } @@ -1808,114 +1687,591 @@ static int resp_log_sense(struct scsi_cmnd * scp, min(len, SDEBUG_MAX_INQ_ARR_SZ)); } -static int resp_read(struct scsi_cmnd * SCpnt, unsigned long long lba, - unsigned int num, struct sdebug_dev_info * devip) +static int check_device_access_params(struct sdebug_dev_info *devi, + unsigned long long lba, unsigned int num) { - unsigned long iflags; - unsigned int block, from_bottom; - unsigned long long u; - int ret; - if (lba + num > sdebug_capacity) { - mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, - 0); + mk_sense_buffer(devi, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, 0); return check_condition_result; } /* transfer length excessive (tie in to block limits VPD page) */ if (num > sdebug_store_sectors) { - mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, - 0); + mk_sense_buffer(devi, 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, + struct sdebug_dev_info *devi, + unsigned long long lba, unsigned int num, int write) +{ + int ret; + unsigned long long block, rest = 0; + struct scsi_data_buffer *sdb; + enum dma_data_direction dir; + size_t (*func)(struct scatterlist *, unsigned int, void *, size_t, + off_t); + + if (write) { + sdb = scsi_out(scmd); + dir = DMA_TO_DEVICE; + func = sg_pcopy_to_buffer; + } else { + sdb = scsi_in(scmd); + dir = DMA_FROM_DEVICE; + func = sg_pcopy_from_buffer; + } + + 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 = func(sdb->table.sgl, sdb->table.nents, + fake_storep + (block * scsi_debug_sector_size), + (num - rest) * scsi_debug_sector_size, 0); + if (ret != (num - rest) * scsi_debug_sector_size) + return ret; + + if (rest) { + ret += func(sdb->table.sgl, sdb->table.nents, + fake_storep, rest * scsi_debug_sector_size, + (num - rest) * scsi_debug_sector_size); + } + + return ret; +} + +static __be16 dif_compute_csum(const void *buf, int len) +{ + __be16 csum; + + if (scsi_debug_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, scsi_debug_sector_size); + + if (sdt->guard_tag != csum) { + pr_err("%s: GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n", + __func__, + (unsigned long)sector, + be16_to_cpu(sdt->guard_tag), + be16_to_cpu(csum)); + return 0x01; + } + if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION && + be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) { + pr_err("%s: REF check failed on sector %lu\n", + __func__, (unsigned long)sector); + return 0x03; + } + if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && + be32_to_cpu(sdt->ref_tag) != ei_lba) { + pr_err("%s: REF check failed on sector %lu\n", + __func__, (unsigned long)sector); + return 0x03; + } + return 0; +} + +static void dif_copy_prot(struct scsi_cmnd *SCpnt, sector_t sector, + unsigned int sectors, bool read) +{ + size_t resid; + void *paddr; + const void *dif_store_end = dif_storep + sdebug_store_sectors; + struct sg_mapping_iter miter; + + /* Bytes of protection data to copy into sgl */ + resid = sectors * sizeof(*dif_storep); + + sg_miter_start(&miter, scsi_prot_sglist(SCpnt), + scsi_prot_sg_count(SCpnt), SG_MITER_ATOMIC | + (read ? SG_MITER_TO_SG : SG_MITER_FROM_SG)); + + while (sg_miter_next(&miter) && resid > 0) { + size_t len = min(miter.length, resid); + void *start = dif_store(sector); + size_t rest = 0; + + if (dif_store_end < start + len) + rest = start + len - dif_store_end; + + paddr = miter.addr; + + if (read) + memcpy(paddr, start, len - rest); + else + memcpy(start, paddr, len - rest); + + if (rest) { + if (read) + memcpy(paddr + len - rest, dif_storep, rest); + else + memcpy(dif_storep, paddr + len - rest, rest); + } + + sector += len / sizeof(*dif_storep); + resid -= len; + } + sg_miter_stop(&miter); +} + +static int prot_verify_read(struct scsi_cmnd *SCpnt, sector_t start_sec, + unsigned int sectors, u32 ei_lba) +{ + unsigned int i; + struct sd_dif_tuple *sdt; + sector_t sector; + + for (i = 0; i < sectors; i++, ei_lba++) { + int ret; + + sector = start_sec + i; + sdt = dif_store(sector); + + if (sdt->app_tag == cpu_to_be16(0xffff)) + continue; + + ret = dif_verify(sdt, fake_store(sector), sector, ei_lba); + if (ret) { + dif_errors++; + return ret; + } + } + + dif_copy_prot(SCpnt, start_sec, sectors, true); + dix_reads++; + + return 0; +} + +static int resp_read(struct scsi_cmnd *SCpnt, unsigned long long lba, + unsigned int num, struct sdebug_dev_info *devip, + u32 ei_lba) +{ + unsigned long iflags; + int ret; + + ret = check_device_access_params(devip, lba, num); + if (ret) + return ret; + if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && - (lba <= OPT_MEDIUM_ERR_ADDR) && + (lba <= (OPT_MEDIUM_ERR_ADDR + OPT_MEDIUM_ERR_NUM - 1)) && ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { /* claim unrecoverable read error */ - mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, - 0); + mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, 0); /* set info field and valid bit for fixed descriptor */ if (0x70 == (devip->sense_buff[0] & 0x7f)) { devip->sense_buff[0] |= 0x80; /* Valid bit */ - ret = OPT_MEDIUM_ERR_ADDR; + ret = (lba < OPT_MEDIUM_ERR_ADDR) + ? OPT_MEDIUM_ERR_ADDR : (int)lba; devip->sense_buff[3] = (ret >> 24) & 0xff; devip->sense_buff[4] = (ret >> 16) & 0xff; devip->sense_buff[5] = (ret >> 8) & 0xff; devip->sense_buff[6] = ret & 0xff; } + scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); return check_condition_result; } + read_lock_irqsave(&atomic_rw, iflags); - if ((lba + num) <= sdebug_store_sectors) - ret = fill_from_dev_buffer(SCpnt, - fake_storep + (lba * SECT_SIZE), - num * SECT_SIZE); - else { - /* modulo when one arg is 64 bits needs do_div() */ - u = lba; - block = do_div(u, sdebug_store_sectors); - from_bottom = 0; - if ((block + num) > sdebug_store_sectors) - from_bottom = (block + num) - sdebug_store_sectors; - ret = fill_from_dev_buffer(SCpnt, - fake_storep + (block * SECT_SIZE), - (num - from_bottom) * SECT_SIZE); - if ((0 == ret) && (from_bottom > 0)) - ret = fill_from_dev_buffer(SCpnt, fake_storep, - from_bottom * SECT_SIZE); + + /* DIX + T10 DIF */ + if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { + int prot_ret = prot_verify_read(SCpnt, lba, num, ei_lba); + + if (prot_ret) { + read_unlock_irqrestore(&atomic_rw, iflags); + mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, prot_ret); + return illegal_condition_result; + } } + + ret = do_device_access(SCpnt, devip, lba, num, 0); read_unlock_irqrestore(&atomic_rw, iflags); + if (ret == -1) + return DID_ERROR << 16; + + scsi_in(SCpnt)->resid = scsi_bufflen(SCpnt) - ret; + + return 0; +} + +void dump_sector(unsigned char *buf, int len) +{ + int i, j; + + printk(KERN_ERR ">>> Sector Dump <<<\n"); + + for (i = 0 ; i < len ; i += 16) { + printk(KERN_ERR "%04d: ", i); + + for (j = 0 ; j < 16 ; j++) { + unsigned char c = buf[i+j]; + if (c >= 0x20 && c < 0x7e) + printk(" %c ", buf[i+j]); + else + printk("%02x ", buf[i+j]); + } + + printk("\n"); + } +} + +static int prot_verify_write(struct scsi_cmnd *SCpnt, sector_t start_sec, + unsigned int sectors, u32 ei_lba) +{ + int ret; + struct sd_dif_tuple *sdt; + void *daddr; + sector_t sector = start_sec; + int ppage_offset; + int dpage_offset; + struct sg_mapping_iter diter; + struct sg_mapping_iter piter; + + BUG_ON(scsi_sg_count(SCpnt) == 0); + BUG_ON(scsi_prot_sg_count(SCpnt) == 0); + + sg_miter_start(&piter, scsi_prot_sglist(SCpnt), + scsi_prot_sg_count(SCpnt), + SG_MITER_ATOMIC | SG_MITER_FROM_SG); + sg_miter_start(&diter, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), + SG_MITER_ATOMIC | SG_MITER_FROM_SG); + + /* For each protection page */ + while (sg_miter_next(&piter)) { + dpage_offset = 0; + if (WARN_ON(!sg_miter_next(&diter))) { + ret = 0x01; + goto out; + } + + for (ppage_offset = 0; ppage_offset < piter.length; + ppage_offset += sizeof(struct sd_dif_tuple)) { + /* If we're at the end of the current + * data page advance to the next one + */ + if (dpage_offset >= diter.length) { + if (WARN_ON(!sg_miter_next(&diter))) { + ret = 0x01; + goto out; + } + dpage_offset = 0; + } + + sdt = piter.addr + ppage_offset; + daddr = diter.addr + dpage_offset; + + ret = dif_verify(sdt, daddr, sector, ei_lba); + if (ret) { + dump_sector(daddr, scsi_debug_sector_size); + goto out; + } + + sector++; + ei_lba++; + dpage_offset += scsi_debug_sector_size; + } + diter.consumed = dpage_offset; + sg_miter_stop(&diter); + } + sg_miter_stop(&piter); + + dif_copy_prot(SCpnt, start_sec, sectors, false); + dix_writes++; + + return 0; + +out: + dif_errors++; + sg_miter_stop(&diter); + sg_miter_stop(&piter); return ret; } -static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, - unsigned int num, struct sdebug_dev_info * devip) +static unsigned long lba_to_map_index(sector_t lba) +{ + if (scsi_debug_unmap_alignment) { + lba += scsi_debug_unmap_granularity - + scsi_debug_unmap_alignment; + } + do_div(lba, scsi_debug_unmap_granularity); + + return lba; +} + +static sector_t map_index_to_lba(unsigned long index) +{ + sector_t lba = index * scsi_debug_unmap_granularity; + + if (scsi_debug_unmap_alignment) { + lba -= scsi_debug_unmap_granularity - + scsi_debug_unmap_alignment; + } + + return lba; +} + +static unsigned int map_state(sector_t lba, unsigned int *num) +{ + sector_t end; + unsigned int mapped; + unsigned long index; + unsigned long next; + + index = lba_to_map_index(lba); + mapped = test_bit(index, map_storep); + + if (mapped) + next = find_next_zero_bit(map_storep, map_size, index); + else + next = find_next_bit(map_storep, map_size, index); + + end = min_t(sector_t, sdebug_store_sectors, map_index_to_lba(next)); + *num = end - lba; + + return mapped; +} + +static void map_region(sector_t lba, unsigned int len) +{ + sector_t end = lba + len; + + while (lba < end) { + unsigned long index = lba_to_map_index(lba); + + if (index < map_size) + set_bit(index, map_storep); + + lba = map_index_to_lba(index + 1); + } +} + +static void unmap_region(sector_t lba, unsigned int len) +{ + sector_t end = lba + len; + + while (lba < end) { + unsigned long index = lba_to_map_index(lba); + + if (lba == map_index_to_lba(index) && + lba + scsi_debug_unmap_granularity <= end && + index < map_size) { + clear_bit(index, map_storep); + if (scsi_debug_lbprz) { + memset(fake_storep + + lba * scsi_debug_sector_size, 0, + scsi_debug_sector_size * + scsi_debug_unmap_granularity); + } + if (dif_storep) { + memset(dif_storep + lba, 0xff, + sizeof(*dif_storep) * + scsi_debug_unmap_granularity); + } + } + lba = map_index_to_lba(index + 1); + } +} + +static int resp_write(struct scsi_cmnd *SCpnt, unsigned long long lba, + unsigned int num, struct sdebug_dev_info *devip, + u32 ei_lba) { unsigned long iflags; - unsigned int block, to_bottom; - unsigned long long u; - int res; + int ret; - if (lba + num > sdebug_capacity) { - mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, - 0); - return check_condition_result; + ret = check_device_access_params(devip, lba, num); + if (ret) + return ret; + + write_lock_irqsave(&atomic_rw, iflags); + + /* DIX + T10 DIF */ + if (scsi_debug_dix && scsi_prot_sg_count(SCpnt)) { + int prot_ret = prot_verify_write(SCpnt, lba, num, ei_lba); + + if (prot_ret) { + write_unlock_irqrestore(&atomic_rw, iflags); + mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, prot_ret); + return illegal_condition_result; + } } - /* transfer length excessive (tie in to block limits VPD page) */ - if (num > sdebug_store_sectors) { + + ret = do_device_access(SCpnt, devip, lba, num, 1); + if (scsi_debug_lbp()) + map_region(lba, num); + write_unlock_irqrestore(&atomic_rw, iflags); + if (-1 == ret) + return (DID_ERROR << 16); + else if ((ret < (num * scsi_debug_sector_size)) && + (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) + printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " + " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); + + return 0; +} + +static int resp_write_same(struct scsi_cmnd *scmd, unsigned long long lba, + unsigned int num, struct sdebug_dev_info *devip, + u32 ei_lba, unsigned int unmap) +{ + unsigned long iflags; + unsigned long long i; + int ret; + + ret = check_device_access_params(devip, lba, num); + if (ret) + return ret; + + if (num > scsi_debug_write_same_length) { mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, 0); return check_condition_result; } write_lock_irqsave(&atomic_rw, iflags); - if ((lba + num) <= sdebug_store_sectors) - res = fetch_to_dev_buffer(SCpnt, - fake_storep + (lba * SECT_SIZE), - num * SECT_SIZE); - else { - /* modulo when one arg is 64 bits needs do_div() */ - u = lba; - block = do_div(u, sdebug_store_sectors); - to_bottom = 0; - if ((block + num) > sdebug_store_sectors) - to_bottom = (block + num) - sdebug_store_sectors; - res = fetch_to_dev_buffer(SCpnt, - fake_storep + (block * SECT_SIZE), - (num - to_bottom) * SECT_SIZE); - if ((0 == res) && (to_bottom > 0)) - res = fetch_to_dev_buffer(SCpnt, fake_storep, - to_bottom * SECT_SIZE); + + if (unmap && scsi_debug_lbp()) { + unmap_region(lba, num); + goto out; } - write_unlock_irqrestore(&atomic_rw, iflags); - if (-1 == res) + + /* Else fetch one logical block */ + ret = fetch_to_dev_buffer(scmd, + fake_storep + (lba * scsi_debug_sector_size), + scsi_debug_sector_size); + + if (-1 == ret) { + write_unlock_irqrestore(&atomic_rw, iflags); return (DID_ERROR << 16); - else if ((res < (num * SECT_SIZE)) && + } else if ((ret < (num * scsi_debug_sector_size)) && (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) - printk(KERN_INFO "scsi_debug: write: cdb indicated=%u, " - " IO sent=%d bytes\n", num * SECT_SIZE, res); + printk(KERN_INFO "scsi_debug: write same: cdb indicated=%u, " + " IO sent=%d bytes\n", num * scsi_debug_sector_size, ret); + + /* Copy first sector to remaining blocks */ + for (i = 1 ; i < num ; i++) + memcpy(fake_storep + ((lba + i) * scsi_debug_sector_size), + fake_storep + (lba * scsi_debug_sector_size), + scsi_debug_sector_size); + + if (scsi_debug_lbp()) + map_region(lba, num); +out: + write_unlock_irqrestore(&atomic_rw, iflags); + return 0; } +struct unmap_block_desc { + __be64 lba; + __be32 blocks; + __be32 __reserved; +}; + +static int resp_unmap(struct scsi_cmnd * scmd, struct sdebug_dev_info * devip) +{ + unsigned char *buf; + struct unmap_block_desc *desc; + unsigned int i, payload_len, descriptors; + int ret; + unsigned long iflags; + + ret = check_readiness(scmd, 1, devip); + if (ret) + return ret; + + payload_len = get_unaligned_be16(&scmd->cmnd[7]); + BUG_ON(scsi_bufflen(scmd) != payload_len); + + descriptors = (payload_len - 8) / 16; + + buf = kmalloc(scsi_bufflen(scmd), GFP_ATOMIC); + if (!buf) + return check_condition_result; + + scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd)); + + BUG_ON(get_unaligned_be16(&buf[0]) != payload_len - 2); + BUG_ON(get_unaligned_be16(&buf[2]) != descriptors * 16); + + desc = (void *)&buf[8]; + + write_lock_irqsave(&atomic_rw, iflags); + + for (i = 0 ; i < descriptors ; i++) { + unsigned long long lba = get_unaligned_be64(&desc[i].lba); + unsigned int num = get_unaligned_be32(&desc[i].blocks); + + ret = check_device_access_params(devip, lba, num); + if (ret) + goto out; + + unmap_region(lba, num); + } + + ret = 0; + +out: + write_unlock_irqrestore(&atomic_rw, iflags); + kfree(buf); + + return ret; +} + +#define SDEBUG_GET_LBA_STATUS_LEN 32 + +static int resp_get_lba_status(struct scsi_cmnd * scmd, + struct sdebug_dev_info * devip) +{ + unsigned long long lba; + unsigned int alloc_len, mapped, num; + unsigned char arr[SDEBUG_GET_LBA_STATUS_LEN]; + int ret; + + ret = check_readiness(scmd, 1, devip); + if (ret) + return ret; + + lba = get_unaligned_be64(&scmd->cmnd[2]); + alloc_len = get_unaligned_be32(&scmd->cmnd[10]); + + if (alloc_len < 24) + return 0; + + ret = check_device_access_params(devip, lba, 1); + if (ret) + return ret; + + mapped = map_state(lba, &num); + + memset(arr, 0, SDEBUG_GET_LBA_STATUS_LEN); + put_unaligned_be32(20, &arr[0]); /* Parameter Data Length */ + put_unaligned_be64(lba, &arr[8]); /* LBA */ + put_unaligned_be32(num, &arr[16]); /* Number of blocks */ + arr[20] = !mapped; /* mapped = 0, unmapped = 1 */ + + return fill_from_dev_buffer(scmd, arr, SDEBUG_GET_LBA_STATUS_LEN); +} + #define SDEBUG_RLUN_ARR_SZ 256 static int resp_report_luns(struct scsi_cmnd * scp, @@ -1976,45 +2332,37 @@ static int resp_report_luns(struct scsi_cmnd * scp, static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, unsigned int num, struct sdebug_dev_info *devip) { - int i, j, ret = -1; + int j; unsigned char *kaddr, *buf; unsigned int offset; - struct scatterlist *sg; struct scsi_data_buffer *sdb = scsi_in(scp); + struct sg_mapping_iter miter; /* better not to use temporary buffer. */ buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); - if (!buf) - return ret; - - offset = 0; - scsi_for_each_sg(scp, sg, scsi_sg_count(scp), i) { - kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); - if (!kaddr) - goto out; - - memcpy(buf + offset, kaddr + sg->offset, sg->length); - offset += sg->length; - kunmap_atomic(kaddr, KM_USER0); + if (!buf) { + mk_sense_buffer(devip, NOT_READY, + LOGICAL_UNIT_COMMUNICATION_FAILURE, 0); + return check_condition_result; } + scsi_sg_copy_to_buffer(scp, buf, scsi_bufflen(scp)); + offset = 0; - for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { - kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); - if (!kaddr) - goto out; + sg_miter_start(&miter, sdb->table.sgl, sdb->table.nents, + SG_MITER_ATOMIC | SG_MITER_TO_SG); - for (j = 0; j < sg->length; j++) - *(kaddr + sg->offset + j) ^= *(buf + offset + j); + while (sg_miter_next(&miter)) { + kaddr = miter.addr; + for (j = 0; j < miter.length; j++) + *(kaddr + j) ^= *(buf + offset + j); - offset += sg->length; - kunmap_atomic(kaddr, KM_USER0); + offset += miter.length; } - ret = 0; -out: + sg_miter_stop(&miter); kfree(buf); - return ret; + return 0; } /* When timer goes off this function is called. */ @@ -2023,7 +2371,7 @@ static void timer_intr_handler(unsigned long indx) struct sdebug_queued_cmd * sqcp; unsigned long iflags; - if (indx >= SCSI_DEBUG_CANQUEUE) { + if (indx >= scsi_debug_max_queue) { printk(KERN_ERR "scsi_debug:timer_intr_handler: indx too " "large\n"); return; @@ -2045,18 +2393,84 @@ static void timer_intr_handler(unsigned long indx) spin_unlock_irqrestore(&queued_arr_lock, iflags); } -static int scsi_debug_slave_alloc(struct scsi_device * sdp) + +static struct sdebug_dev_info * +sdebug_device_create(struct sdebug_host_info *sdbg_host, gfp_t flags) +{ + struct sdebug_dev_info *devip; + + devip = kzalloc(sizeof(*devip), flags); + if (devip) { + devip->sdbg_host = sdbg_host; + list_add_tail(&devip->dev_list, &sdbg_host->dev_info_list); + } + return devip; +} + +static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) +{ + struct sdebug_host_info * sdbg_host; + struct sdebug_dev_info * open_devip = NULL; + struct sdebug_dev_info * devip = + (struct sdebug_dev_info *)sdev->hostdata; + + if (devip) + return devip; + sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host); + if (!sdbg_host) { + printk(KERN_ERR "Host info NULL\n"); + return NULL; + } + list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { + if ((devip->used) && (devip->channel == sdev->channel) && + (devip->target == sdev->id) && + (devip->lun == sdev->lun)) + return devip; + else { + if ((!devip->used) && (!open_devip)) + open_devip = devip; + } + } + if (!open_devip) { /* try and make a new one */ + open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC); + if (!open_devip) { + printk(KERN_ERR "%s: out of memory at line %d\n", + __func__, __LINE__); + return NULL; + } + } + + open_devip->channel = sdev->channel; + open_devip->target = sdev->id; + open_devip->lun = sdev->lun; + open_devip->sdbg_host = sdbg_host; + open_devip->reset = 1; + open_devip->used = 1; + memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); + if (scsi_debug_dsense) + open_devip->sense_buff[0] = 0x72; + else { + open_devip->sense_buff[0] = 0x70; + open_devip->sense_buff[7] = 0xa; + } + if (sdev->lun == SAM2_WLUN_REPORT_LUNS) + open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; + + return open_devip; +} + +static int scsi_debug_slave_alloc(struct scsi_device *sdp) { if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); - set_bit(QUEUE_FLAG_BIDI, &sdp->request_queue->queue_flags); + queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue); return 0; } -static int scsi_debug_slave_configure(struct scsi_device * sdp) +static int scsi_debug_slave_configure(struct scsi_device *sdp) { - struct sdebug_dev_info * devip; + struct sdebug_dev_info *devip; if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %u>\n", @@ -2071,102 +2485,64 @@ static int scsi_debug_slave_configure(struct scsi_device * sdp) scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, sdp->host->cmd_per_lun); blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); + if (scsi_debug_no_uld) + sdp->no_uld_attach = 1; return 0; } -static void scsi_debug_slave_destroy(struct scsi_device * sdp) +static void scsi_debug_slave_destroy(struct scsi_device *sdp) { - struct sdebug_dev_info * devip = - (struct sdebug_dev_info *)sdp->hostdata; + struct sdebug_dev_info *devip = + (struct sdebug_dev_info *)sdp->hostdata; if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %u>\n", sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); if (devip) { - /* make this slot avaliable for re-use */ + /* make this slot available for re-use */ devip->used = 0; sdp->hostdata = NULL; } } -static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) +/* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ +static int stop_queued_cmnd(struct scsi_cmnd *cmnd) { - struct sdebug_host_info * sdbg_host; - struct sdebug_dev_info * open_devip = NULL; - struct sdebug_dev_info * devip = - (struct sdebug_dev_info *)sdev->hostdata; + unsigned long iflags; + int k; + struct sdebug_queued_cmd *sqcp; - if (devip) - return devip; - sdbg_host = *(struct sdebug_host_info **) sdev->host->hostdata; - if(! sdbg_host) { - printk(KERN_ERR "Host info NULL\n"); - return NULL; - } - list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) { - if ((devip->used) && (devip->channel == sdev->channel) && - (devip->target == sdev->id) && - (devip->lun == sdev->lun)) - return devip; - else { - if ((!devip->used) && (!open_devip)) - open_devip = devip; + spin_lock_irqsave(&queued_arr_lock, iflags); + for (k = 0; k < scsi_debug_max_queue; ++k) { + sqcp = &queued_arr[k]; + if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { + del_timer_sync(&sqcp->cmnd_timer); + sqcp->in_use = 0; + sqcp->a_cmnd = NULL; + break; } } - if (NULL == open_devip) { /* try and make a new one */ - open_devip = kzalloc(sizeof(*open_devip),GFP_ATOMIC); - if (NULL == open_devip) { - printk(KERN_ERR "%s: out of memory at line %d\n", - __FUNCTION__, __LINE__); - return NULL; - } - open_devip->sdbg_host = sdbg_host; - list_add_tail(&open_devip->dev_list, - &sdbg_host->dev_info_list); - } - if (open_devip) { - open_devip->channel = sdev->channel; - open_devip->target = sdev->id; - open_devip->lun = sdev->lun; - open_devip->sdbg_host = sdbg_host; - open_devip->reset = 1; - open_devip->used = 1; - memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); - if (scsi_debug_dsense) - open_devip->sense_buff[0] = 0x72; - else { - open_devip->sense_buff[0] = 0x70; - open_devip->sense_buff[7] = 0xa; - } - if (sdev->lun == SAM2_WLUN_REPORT_LUNS) - open_devip->wlun = SAM2_WLUN_REPORT_LUNS & 0xff; - return open_devip; - } - return NULL; + spin_unlock_irqrestore(&queued_arr_lock, iflags); + return (k < scsi_debug_max_queue) ? 1 : 0; } -static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, - int asc, int asq) +/* Deletes (stops) timers of all queued commands */ +static void stop_all_queued(void) { - unsigned char * sbuff; + unsigned long iflags; + int k; + struct sdebug_queued_cmd *sqcp; - sbuff = devip->sense_buff; - memset(sbuff, 0, SDEBUG_SENSE_LEN); - if (scsi_debug_dsense) { - sbuff[0] = 0x72; /* descriptor, current */ - sbuff[1] = key; - sbuff[2] = asc; - sbuff[3] = asq; - } else { - sbuff[0] = 0x70; /* fixed, current */ - sbuff[2] = key; - sbuff[7] = 0xa; /* implies 18 byte sense buffer */ - sbuff[12] = asc; - sbuff[13] = asq; + spin_lock_irqsave(&queued_arr_lock, iflags); + for (k = 0; k < scsi_debug_max_queue; ++k) { + sqcp = &queued_arr[k]; + if (sqcp->in_use && sqcp->a_cmnd) { + del_timer_sync(&sqcp->cmnd_timer); + sqcp->in_use = 0; + sqcp->a_cmnd = NULL; + } } - if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) - printk(KERN_INFO "scsi_debug: [sense_key,asc,ascq]: " - "[0x%x,0x%x,0x%x]\n", key, asc, asq); + spin_unlock_irqrestore(&queued_arr_lock, iflags); } static int scsi_debug_abort(struct scsi_cmnd * SCpnt) @@ -2226,7 +2602,7 @@ static int scsi_debug_bus_reset(struct scsi_cmnd * SCpnt) printk(KERN_INFO "scsi_debug: bus_reset\n"); ++num_bus_resets; if (SCpnt && ((sdp = SCpnt->device)) && ((hp = sdp->host))) { - sdbg_host = *(struct sdebug_host_info **) hp->hostdata; + sdbg_host = *(struct sdebug_host_info **)shost_priv(hp); if (sdbg_host) { list_for_each_entry(dev_info, &sdbg_host->dev_info_list, @@ -2256,46 +2632,6 @@ static int scsi_debug_host_reset(struct scsi_cmnd * SCpnt) return SUCCESS; } -/* Returns 1 if found 'cmnd' and deleted its timer. else returns 0 */ -static int stop_queued_cmnd(struct scsi_cmnd * cmnd) -{ - unsigned long iflags; - int k; - struct sdebug_queued_cmd * sqcp; - - spin_lock_irqsave(&queued_arr_lock, iflags); - for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { - sqcp = &queued_arr[k]; - if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { - del_timer_sync(&sqcp->cmnd_timer); - sqcp->in_use = 0; - sqcp->a_cmnd = NULL; - break; - } - } - spin_unlock_irqrestore(&queued_arr_lock, iflags); - return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; -} - -/* Deletes (stops) timers of all queued commands */ -static void stop_all_queued(void) -{ - unsigned long iflags; - int k; - struct sdebug_queued_cmd * sqcp; - - spin_lock_irqsave(&queued_arr_lock, iflags); - for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { - sqcp = &queued_arr[k]; - if (sqcp->in_use && sqcp->a_cmnd) { - del_timer_sync(&sqcp->cmnd_timer); - sqcp->in_use = 0; - sqcp->a_cmnd = NULL; - } - } - spin_unlock_irqrestore(&queued_arr_lock, iflags); -} - /* Initializes timers in queued array */ static void __init init_all_queued(void) { @@ -2304,7 +2640,7 @@ static void __init init_all_queued(void) struct sdebug_queued_cmd * sqcp; spin_lock_irqsave(&queued_arr_lock, iflags); - for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { + for (k = 0; k < scsi_debug_max_queue; ++k) { sqcp = &queued_arr[k]; init_timer(&sqcp->cmnd_timer); sqcp->in_use = 0; @@ -2313,7 +2649,8 @@ static void __init init_all_queued(void) spin_unlock_irqrestore(&queued_arr_lock, iflags); } -static void __init sdebug_build_parts(unsigned char * ramp) +static void __init sdebug_build_parts(unsigned char *ramp, + unsigned long store_size) { struct partition * pp; int starts[SDEBUG_MAX_PARTS + 2]; @@ -2321,7 +2658,7 @@ static void __init sdebug_build_parts(unsigned char * ramp) int heads_by_sects, start_sec, end_sec; /* assume partition table already zeroed */ - if ((scsi_debug_num_parts < 1) || (sdebug_store_size < 1048576)) + if ((scsi_debug_num_parts < 1) || (store_size < 1048576)) return; if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { scsi_debug_num_parts = SDEBUG_MAX_PARTS; @@ -2357,8 +2694,8 @@ static void __init sdebug_build_parts(unsigned char * ramp) / sdebug_sectors_per; pp->end_sector = (end_sec % sdebug_sectors_per) + 1; - pp->start_sect = start_sec; - pp->nr_sects = end_sec - start_sec + 1; + pp->start_sect = cpu_to_le32(start_sec); + pp->nr_sects = cpu_to_le32(end_sec - start_sec + 1); pp->sys_ind = 0x83; /* plain Linux partition */ } } @@ -2395,12 +2732,12 @@ static int schedule_resp(struct scsi_cmnd * cmnd, struct sdebug_queued_cmd * sqcp = NULL; spin_lock_irqsave(&queued_arr_lock, iflags); - for (k = 0; k < SCSI_DEBUG_CANQUEUE; ++k) { + for (k = 0; k < scsi_debug_max_queue; ++k) { sqcp = &queued_arr[k]; if (! sqcp->in_use) break; } - if (k >= SCSI_DEBUG_CANQUEUE) { + if (k >= scsi_debug_max_queue) { spin_unlock_irqrestore(&queued_arr_lock, iflags); printk(KERN_WARNING "scsi_debug: can_queue exceeded\n"); return 1; /* report busy to mid level */ @@ -2419,7 +2756,6 @@ static int schedule_resp(struct scsi_cmnd * cmnd, return 0; } } - /* Note: The following macros create attribute files in the /sys/module/scsi_debug/parameters directory. Unfortunately this driver is unaware of a change and cannot trigger auxiliary actions @@ -2427,21 +2763,43 @@ static int schedule_resp(struct scsi_cmnd * cmnd, /sys/bus/pseudo/drivers/scsi_debug directory is changed. */ module_param_named(add_host, scsi_debug_add_host, int, S_IRUGO | S_IWUSR); +module_param_named(ato, scsi_debug_ato, int, S_IRUGO); +module_param_named(clustering, scsi_debug_clustering, bool, S_IRUGO | S_IWUSR); module_param_named(delay, scsi_debug_delay, int, S_IRUGO | S_IWUSR); module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, S_IRUGO); +module_param_named(dif, scsi_debug_dif, int, S_IRUGO); +module_param_named(dix, scsi_debug_dix, int, S_IRUGO); module_param_named(dsense, scsi_debug_dsense, int, S_IRUGO | S_IWUSR); module_param_named(every_nth, scsi_debug_every_nth, int, S_IRUGO | S_IWUSR); module_param_named(fake_rw, scsi_debug_fake_rw, int, S_IRUGO | S_IWUSR); +module_param_named(guard, scsi_debug_guard, uint, S_IRUGO); +module_param_named(lbpu, scsi_debug_lbpu, int, S_IRUGO); +module_param_named(lbpws, scsi_debug_lbpws, int, S_IRUGO); +module_param_named(lbpws10, scsi_debug_lbpws10, int, S_IRUGO); +module_param_named(lbprz, scsi_debug_lbprz, int, S_IRUGO); +module_param_named(lowest_aligned, scsi_debug_lowest_aligned, int, S_IRUGO); module_param_named(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); +module_param_named(max_queue, scsi_debug_max_queue, int, S_IRUGO | S_IWUSR); module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); +module_param_named(no_uld, scsi_debug_no_uld, int, S_IRUGO); module_param_named(num_parts, scsi_debug_num_parts, int, S_IRUGO); module_param_named(num_tgts, scsi_debug_num_tgts, int, S_IRUGO | S_IWUSR); +module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO); module_param_named(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); +module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO); module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); +module_param_named(removable, scsi_debug_removable, bool, S_IRUGO | S_IWUSR); module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); +module_param_named(sector_size, scsi_debug_sector_size, int, S_IRUGO); +module_param_named(unmap_alignment, scsi_debug_unmap_alignment, int, S_IRUGO); +module_param_named(unmap_granularity, scsi_debug_unmap_granularity, int, S_IRUGO); +module_param_named(unmap_max_blocks, scsi_debug_unmap_max_blocks, int, S_IRUGO); +module_param_named(unmap_max_desc, scsi_debug_unmap_max_desc, int, S_IRUGO); module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); module_param_named(vpd_use_hostno, scsi_debug_vpd_use_hostno, int, S_IRUGO | S_IWUSR); +module_param_named(write_same_length, scsi_debug_write_same_length, int, + S_IRUGO | S_IWUSR); MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); MODULE_DESCRIPTION("SCSI debug adapter driver"); @@ -2449,21 +2807,41 @@ MODULE_LICENSE("GPL"); MODULE_VERSION(SCSI_DEBUG_VERSION); MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); +MODULE_PARM_DESC(ato, "application tag ownership: 0=disk 1=host (def=1)"); +MODULE_PARM_DESC(clustering, "when set enables larger transfers (def=0)"); MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs(def=8)"); +MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); +MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); MODULE_PARM_DESC(dsense, "use descriptor sense format(def=0 -> fixed)"); MODULE_PARM_DESC(every_nth, "timeout every nth command(def=0)"); MODULE_PARM_DESC(fake_rw, "fake reads/writes instead of copying (def=0)"); +MODULE_PARM_DESC(guard, "protection checksum: 0=crc, 1=ip (def=0)"); +MODULE_PARM_DESC(lbpu, "enable LBP, support UNMAP command (def=0)"); +MODULE_PARM_DESC(lbpws, "enable LBP, support WRITE SAME(16) with UNMAP bit (def=0)"); +MODULE_PARM_DESC(lbpws10, "enable LBP, support WRITE SAME(10) with UNMAP bit (def=0)"); +MODULE_PARM_DESC(lbprz, "unmapped blocks return 0 on read (def=1)"); +MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); +MODULE_PARM_DESC(max_queue, "max number of queued commands (1 to 255(def))"); MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 0)"); +MODULE_PARM_DESC(no_uld, "stop ULD (e.g. sd driver) attaching (def=0))"); MODULE_PARM_DESC(num_parts, "number of partitions(def=0)"); MODULE_PARM_DESC(num_tgts, "number of targets per host to simulate(def=1)"); +MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)"); MODULE_PARM_DESC(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); +MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); +MODULE_PARM_DESC(removable, "claim to have removable media (def=0)"); MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); +MODULE_PARM_DESC(sector_size, "logical block size in bytes (def=512)"); +MODULE_PARM_DESC(unmap_alignment, "lowest aligned thin provisioning lba (def=0)"); +MODULE_PARM_DESC(unmap_granularity, "thin provisioning granularity in blocks (def=1)"); +MODULE_PARM_DESC(unmap_max_blocks, "max # of blocks can be unmapped in one cmd (def=0xffffffff)"); +MODULE_PARM_DESC(unmap_max_desc, "max # of ranges that can be unmapped in one cmd (def=256)"); MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique dev ids)"); - +MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)"); static char sdebug_info[256]; @@ -2479,62 +2857,51 @@ static const char * scsi_debug_info(struct Scsi_Host * shp) /* scsi_debug_proc_info * Used if the driver currently has no own support for /proc/scsi */ -static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, - int length, int inout) +static int scsi_debug_write_info(struct Scsi_Host *host, char *buffer, int length) { - int len, pos, begin; - int orig_length; + char arr[16]; + int opts; + int minLen = length > 15 ? 15 : length; - orig_length = length; - - if (inout == 1) { - char arr[16]; - int minLen = length > 15 ? 15 : length; + if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) + return -EACCES; + memcpy(arr, buffer, minLen); + arr[minLen] = '\0'; + if (1 != sscanf(arr, "%d", &opts)) + return -EINVAL; + scsi_debug_opts = opts; + if (scsi_debug_every_nth != 0) + scsi_debug_cmnd_count = 0; + return length; +} - if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) - return -EACCES; - memcpy(arr, buffer, minLen); - arr[minLen] = '\0'; - if (1 != sscanf(arr, "%d", &pos)) - return -EINVAL; - scsi_debug_opts = pos; - if (scsi_debug_every_nth != 0) - scsi_debug_cmnd_count = 0; - return length; - } - begin = 0; - pos = len = sprintf(buffer, "scsi_debug adapter driver, version " +static int scsi_debug_show_info(struct seq_file *m, struct Scsi_Host *host) +{ + seq_printf(m, "scsi_debug adapter driver, version " "%s [%s]\n" "num_tgts=%d, shared (ram) size=%d MB, opts=0x%x, " "every_nth=%d(curr:%d)\n" "delay=%d, max_luns=%d, scsi_level=%d\n" "sector_size=%d bytes, cylinders=%d, heads=%d, sectors=%d\n" "number of aborts=%d, device_reset=%d, bus_resets=%d, " - "host_resets=%d\n", + "host_resets=%d\ndix_reads=%d dix_writes=%d dif_errors=%d\n", SCSI_DEBUG_VERSION, scsi_debug_version_date, scsi_debug_num_tgts, scsi_debug_dev_size_mb, scsi_debug_opts, scsi_debug_every_nth, scsi_debug_cmnd_count, scsi_debug_delay, scsi_debug_max_luns, scsi_debug_scsi_level, - SECT_SIZE, sdebug_cylinders_per, sdebug_heads, sdebug_sectors_per, - num_aborts, num_dev_resets, num_bus_resets, num_host_resets); - if (pos < offset) { - len = 0; - begin = pos; - } - *start = buffer + (offset - begin); /* Start of wanted data */ - len -= (offset - begin); - if (len > length) - len = length; - return len; + scsi_debug_sector_size, sdebug_cylinders_per, sdebug_heads, + sdebug_sectors_per, num_aborts, num_dev_resets, num_bus_resets, + num_host_resets, dix_reads, dix_writes, dif_errors); + return 0; } -static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) +static ssize_t delay_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_delay); } -static ssize_t sdebug_delay_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t delay_store(struct device_driver *ddp, const char *buf, + size_t count) { int delay; char work[20]; @@ -2547,16 +2914,15 @@ static ssize_t sdebug_delay_store(struct device_driver * ddp, } return -EINVAL; } -DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, - sdebug_delay_store); +static DRIVER_ATTR_RW(delay); -static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) +static ssize_t opts_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "0x%x\n", scsi_debug_opts); } -static ssize_t sdebug_opts_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t opts_store(struct device_driver *ddp, const char *buf, + size_t count) { int opts; char work[20]; @@ -2576,15 +2942,14 @@ opts_done: scsi_debug_cmnd_count = 0; return count; } -DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, - sdebug_opts_store); +static DRIVER_ATTR_RW(opts); -static ssize_t sdebug_ptype_show(struct device_driver * ddp, char * buf) +static ssize_t ptype_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ptype); } -static ssize_t sdebug_ptype_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t ptype_store(struct device_driver *ddp, const char *buf, + size_t count) { int n; @@ -2594,14 +2959,14 @@ static ssize_t sdebug_ptype_store(struct device_driver * ddp, } return -EINVAL; } -DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); +static DRIVER_ATTR_RW(ptype); -static ssize_t sdebug_dsense_show(struct device_driver * ddp, char * buf) +static ssize_t dsense_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dsense); } -static ssize_t sdebug_dsense_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t dsense_store(struct device_driver *ddp, const char *buf, + size_t count) { int n; @@ -2611,15 +2976,14 @@ static ssize_t sdebug_dsense_store(struct device_driver * ddp, } return -EINVAL; } -DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, - sdebug_dsense_store); +static DRIVER_ATTR_RW(dsense); -static ssize_t sdebug_fake_rw_show(struct device_driver * ddp, char * buf) +static ssize_t fake_rw_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_fake_rw); } -static ssize_t sdebug_fake_rw_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf, + size_t count) { int n; @@ -2629,15 +2993,14 @@ static ssize_t sdebug_fake_rw_store(struct device_driver * ddp, } return -EINVAL; } -DRIVER_ATTR(fake_rw, S_IRUGO | S_IWUSR, sdebug_fake_rw_show, - sdebug_fake_rw_store); +static DRIVER_ATTR_RW(fake_rw); -static ssize_t sdebug_no_lun_0_show(struct device_driver * ddp, char * buf) +static ssize_t no_lun_0_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_lun_0); } -static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t no_lun_0_store(struct device_driver *ddp, const char *buf, + size_t count) { int n; @@ -2647,15 +3010,14 @@ static ssize_t sdebug_no_lun_0_store(struct device_driver * ddp, } return -EINVAL; } -DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, - sdebug_no_lun_0_store); +static DRIVER_ATTR_RW(no_lun_0); -static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) +static ssize_t num_tgts_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_tgts); } -static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t num_tgts_store(struct device_driver *ddp, const char *buf, + size_t count) { int n; @@ -2666,27 +3028,26 @@ static ssize_t sdebug_num_tgts_store(struct device_driver * ddp, } return -EINVAL; } -DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, - sdebug_num_tgts_store); +static DRIVER_ATTR_RW(num_tgts); -static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) +static ssize_t dev_size_mb_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dev_size_mb); } -DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); +static DRIVER_ATTR_RO(dev_size_mb); -static ssize_t sdebug_num_parts_show(struct device_driver * ddp, char * buf) +static ssize_t num_parts_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_num_parts); } -DRIVER_ATTR(num_parts, S_IRUGO, sdebug_num_parts_show, NULL); +static DRIVER_ATTR_RO(num_parts); -static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) +static ssize_t every_nth_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_every_nth); } -static ssize_t sdebug_every_nth_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t every_nth_store(struct device_driver *ddp, const char *buf, + size_t count) { int nth; @@ -2697,15 +3058,14 @@ static ssize_t sdebug_every_nth_store(struct device_driver * ddp, } return -EINVAL; } -DRIVER_ATTR(every_nth, S_IRUGO | S_IWUSR, sdebug_every_nth_show, - sdebug_every_nth_store); +static DRIVER_ATTR_RW(every_nth); -static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) +static ssize_t max_luns_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_luns); } -static ssize_t sdebug_max_luns_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t max_luns_store(struct device_driver *ddp, const char *buf, + size_t count) { int n; @@ -2716,61 +3076,70 @@ static ssize_t sdebug_max_luns_store(struct device_driver * ddp, } return -EINVAL; } -DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, - sdebug_max_luns_store); +static DRIVER_ATTR_RW(max_luns); -static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) +static ssize_t max_queue_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue); +} +static ssize_t max_queue_store(struct device_driver *ddp, const char *buf, + size_t count) +{ + int n; + + if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n > 0) && + (n <= SCSI_DEBUG_CANQUEUE)) { + scsi_debug_max_queue = n; + return count; + } + return -EINVAL; +} +static DRIVER_ATTR_RW(max_queue); + +static ssize_t no_uld_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld); +} +static DRIVER_ATTR_RO(no_uld); + +static ssize_t scsi_level_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); } -DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); +static DRIVER_ATTR_RO(scsi_level); -static ssize_t sdebug_virtual_gb_show(struct device_driver * ddp, char * buf) +static ssize_t virtual_gb_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_virtual_gb); } -static ssize_t sdebug_virtual_gb_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t virtual_gb_store(struct device_driver *ddp, const char *buf, + size_t count) { int n; if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { scsi_debug_virtual_gb = n; - if (scsi_debug_virtual_gb > 0) { - sdebug_capacity = 2048 * 1024; - sdebug_capacity *= scsi_debug_virtual_gb; - } else - sdebug_capacity = sdebug_store_sectors; + + sdebug_capacity = get_sdebug_capacity(); + return count; } return -EINVAL; } -DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, - sdebug_virtual_gb_store); +static DRIVER_ATTR_RW(virtual_gb); -static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) +static ssize_t add_host_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_add_host); } -static ssize_t sdebug_add_host_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t add_host_store(struct device_driver *ddp, const char *buf, + size_t count) { - int delta_hosts; - char work[20]; + int delta_hosts; - if (1 != sscanf(buf, "%10s", work)) + if (sscanf(buf, "%d", &delta_hosts) != 1) return -EINVAL; - { /* temporary hack around sscanf() problem with -ve nums */ - int neg = 0; - - if ('-' == *work) - neg = 1; - if (1 != sscanf(work + neg, "%d", &delta_hosts)) - return -EINVAL; - if (neg) - delta_hosts = -delta_hosts; - } if (delta_hosts > 0) { do { sdebug_add_adapter(); @@ -2782,16 +3151,14 @@ static ssize_t sdebug_add_host_store(struct device_driver * ddp, } return count; } -DRIVER_ATTR(add_host, S_IRUGO | S_IWUSR, sdebug_add_host_show, - sdebug_add_host_store); +static DRIVER_ATTR_RW(add_host); -static ssize_t sdebug_vpd_use_hostno_show(struct device_driver * ddp, - char * buf) +static ssize_t vpd_use_hostno_show(struct device_driver *ddp, char *buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_vpd_use_hostno); } -static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp, - const char * buf, size_t count) +static ssize_t vpd_use_hostno_store(struct device_driver *ddp, const char *buf, + size_t count) { int n; @@ -2801,72 +3168,169 @@ static ssize_t sdebug_vpd_use_hostno_store(struct device_driver * ddp, } return -EINVAL; } -DRIVER_ATTR(vpd_use_hostno, S_IRUGO | S_IWUSR, sdebug_vpd_use_hostno_show, - sdebug_vpd_use_hostno_store); +static DRIVER_ATTR_RW(vpd_use_hostno); -/* Note: The following function creates attribute files in the +static ssize_t sector_size_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_sector_size); +} +static DRIVER_ATTR_RO(sector_size); + +static ssize_t dix_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dix); +} +static DRIVER_ATTR_RO(dix); + +static ssize_t dif_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_dif); +} +static DRIVER_ATTR_RO(dif); + +static ssize_t guard_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%u\n", scsi_debug_guard); +} +static DRIVER_ATTR_RO(guard); + +static ssize_t ato_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_ato); +} +static DRIVER_ATTR_RO(ato); + +static ssize_t map_show(struct device_driver *ddp, char *buf) +{ + ssize_t count; + + if (!scsi_debug_lbp()) + return scnprintf(buf, PAGE_SIZE, "0-%u\n", + sdebug_store_sectors); + + count = bitmap_scnlistprintf(buf, PAGE_SIZE, map_storep, map_size); + + buf[count++] = '\n'; + buf[count++] = 0; + + return count; +} +static DRIVER_ATTR_RO(map); + +static ssize_t removable_show(struct device_driver *ddp, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_removable ? 1 : 0); +} +static ssize_t removable_store(struct device_driver *ddp, const char *buf, + size_t count) +{ + int n; + + if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { + scsi_debug_removable = (n > 0); + return count; + } + return -EINVAL; +} +static DRIVER_ATTR_RW(removable); + +/* Note: The following array creates attribute files in the /sys/bus/pseudo/drivers/scsi_debug directory. The advantage of these files (over those found in the /sys/module/scsi_debug/parameters directory) is that auxiliary actions can be triggered when an attribute is changed. For example see: sdebug_add_host_store() above. */ -static int do_create_driverfs_files(void) -{ - int ret; - ret = driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_dsense); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_ptype); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); - ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); - return ret; -} +static struct attribute *sdebug_drv_attrs[] = { + &driver_attr_delay.attr, + &driver_attr_opts.attr, + &driver_attr_ptype.attr, + &driver_attr_dsense.attr, + &driver_attr_fake_rw.attr, + &driver_attr_no_lun_0.attr, + &driver_attr_num_tgts.attr, + &driver_attr_dev_size_mb.attr, + &driver_attr_num_parts.attr, + &driver_attr_every_nth.attr, + &driver_attr_max_luns.attr, + &driver_attr_max_queue.attr, + &driver_attr_no_uld.attr, + &driver_attr_scsi_level.attr, + &driver_attr_virtual_gb.attr, + &driver_attr_add_host.attr, + &driver_attr_vpd_use_hostno.attr, + &driver_attr_sector_size.attr, + &driver_attr_dix.attr, + &driver_attr_dif.attr, + &driver_attr_guard.attr, + &driver_attr_ato.attr, + &driver_attr_map.attr, + &driver_attr_removable.attr, + NULL, +}; +ATTRIBUTE_GROUPS(sdebug_drv); -static void do_remove_driverfs_files(void) -{ - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_vpd_use_hostno); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_virtual_gb); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_ptype); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_parts); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_fake_rw); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_every_nth); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dsense); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); -} +static struct device *pseudo_primary; static int __init scsi_debug_init(void) { - unsigned int sz; + unsigned long sz; int host_to_add; int k; int ret; + switch (scsi_debug_sector_size) { + case 512: + case 1024: + case 2048: + case 4096: + break; + default: + printk(KERN_ERR "scsi_debug_init: invalid sector_size %d\n", + scsi_debug_sector_size); + return -EINVAL; + } + + switch (scsi_debug_dif) { + + case SD_DIF_TYPE0_PROTECTION: + case SD_DIF_TYPE1_PROTECTION: + case SD_DIF_TYPE2_PROTECTION: + case SD_DIF_TYPE3_PROTECTION: + break; + + default: + printk(KERN_ERR "scsi_debug_init: dif must be 0, 1, 2 or 3\n"); + return -EINVAL; + } + + if (scsi_debug_guard > 1) { + printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n"); + return -EINVAL; + } + + if (scsi_debug_ato > 1) { + printk(KERN_ERR "scsi_debug_init: ato must be 0 or 1\n"); + return -EINVAL; + } + + if (scsi_debug_physblk_exp > 15) { + printk(KERN_ERR "scsi_debug_init: invalid physblk_exp %u\n", + scsi_debug_physblk_exp); + return -EINVAL; + } + + if (scsi_debug_lowest_aligned > 0x3fff) { + printk(KERN_ERR "scsi_debug_init: lowest_aligned too big: %u\n", + scsi_debug_lowest_aligned); + return -EINVAL; + } + if (scsi_debug_dev_size_mb < 1) scsi_debug_dev_size_mb = 1; /* force minimum 1 MB ramdisk */ - sdebug_store_size = (unsigned int)scsi_debug_dev_size_mb * 1048576; - sdebug_store_sectors = sdebug_store_size / SECT_SIZE; - if (scsi_debug_virtual_gb > 0) { - sdebug_capacity = 2048 * 1024; - sdebug_capacity *= scsi_debug_virtual_gb; - } else - sdebug_capacity = sdebug_store_sectors; + sz = (unsigned long)scsi_debug_dev_size_mb * 1048576; + sdebug_store_sectors = sz / scsi_debug_sector_size; + sdebug_capacity = get_sdebug_capacity(); /* play around with geometry, don't waste too much on track 0 */ sdebug_heads = 8; @@ -2885,7 +3349,6 @@ static int __init scsi_debug_init(void) (sdebug_sectors_per * sdebug_heads); } - sz = sdebug_store_size; fake_storep = vmalloc(sz); if (NULL == fake_storep) { printk(KERN_ERR "scsi_debug_init: out of memory, 1\n"); @@ -2893,12 +3356,69 @@ static int __init scsi_debug_init(void) } memset(fake_storep, 0, sz); if (scsi_debug_num_parts > 0) - sdebug_build_parts(fake_storep); + sdebug_build_parts(fake_storep, sz); - ret = device_register(&pseudo_primary); - if (ret < 0) { - printk(KERN_WARNING "scsi_debug: device_register error: %d\n", - ret); + if (scsi_debug_dix) { + int dif_size; + + dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple); + dif_storep = vmalloc(dif_size); + + printk(KERN_ERR "scsi_debug_init: dif_storep %u bytes @ %p\n", + dif_size, dif_storep); + + if (dif_storep == NULL) { + printk(KERN_ERR "scsi_debug_init: out of mem. (DIX)\n"); + ret = -ENOMEM; + goto free_vm; + } + + memset(dif_storep, 0xff, dif_size); + } + + /* Logical Block Provisioning */ + if (scsi_debug_lbp()) { + scsi_debug_unmap_max_blocks = + clamp(scsi_debug_unmap_max_blocks, 0U, 0xffffffffU); + + scsi_debug_unmap_max_desc = + clamp(scsi_debug_unmap_max_desc, 0U, 256U); + + scsi_debug_unmap_granularity = + clamp(scsi_debug_unmap_granularity, 1U, 0xffffffffU); + + if (scsi_debug_unmap_alignment && + scsi_debug_unmap_granularity <= + scsi_debug_unmap_alignment) { + printk(KERN_ERR + "%s: ERR: unmap_granularity <= unmap_alignment\n", + __func__); + return -EINVAL; + } + + map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1; + map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long)); + + printk(KERN_INFO "scsi_debug_init: %lu provisioning blocks\n", + map_size); + + if (map_storep == NULL) { + printk(KERN_ERR "scsi_debug_init: out of mem. (MAP)\n"); + ret = -ENOMEM; + goto free_vm; + } + + bitmap_zero(map_storep, map_size); + + /* Map first 1KB for partition table */ + if (scsi_debug_num_parts) + map_region(0, 2); + } + + pseudo_primary = root_device_register("pseudo_0"); + if (IS_ERR(pseudo_primary)) { + printk(KERN_WARNING "scsi_debug: root_device_register() error\n"); + ret = PTR_ERR(pseudo_primary); goto free_vm; } ret = bus_register(&pseudo_lld_bus); @@ -2913,17 +3433,9 @@ static int __init scsi_debug_init(void) ret); goto bus_unreg; } - ret = do_create_driverfs_files(); - if (ret < 0) { - printk(KERN_WARNING "scsi_debug: driver_create_file error: %d\n", - ret); - goto del_files; - } init_all_queued(); - sdebug_driver_template.proc_name = sdebug_proc_name; - host_to_add = scsi_debug_add_host; scsi_debug_add_host = 0; @@ -2941,14 +3453,15 @@ static int __init scsi_debug_init(void) } return 0; -del_files: - do_remove_driverfs_files(); - driver_unregister(&sdebug_driverfs_driver); bus_unreg: bus_unregister(&pseudo_lld_bus); dev_unreg: - device_unregister(&pseudo_primary); + root_device_unregister(pseudo_primary); free_vm: + if (map_storep) + vfree(map_storep); + if (dif_storep) + vfree(dif_storep); vfree(fake_storep); return ret; @@ -2961,10 +3474,12 @@ static void __exit scsi_debug_exit(void) stop_all_queued(); for (; k; k--) sdebug_remove_adapter(); - do_remove_driverfs_files(); driver_unregister(&sdebug_driverfs_driver); bus_unregister(&pseudo_lld_bus); - device_unregister(&pseudo_primary); + root_device_unregister(pseudo_primary); + + if (dif_storep) + vfree(dif_storep); vfree(fake_storep); } @@ -2972,30 +3487,6 @@ static void __exit scsi_debug_exit(void) device_initcall(scsi_debug_init); module_exit(scsi_debug_exit); -static void pseudo_0_release(struct device * dev) -{ - if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) - printk(KERN_INFO "scsi_debug: pseudo_0_release() called\n"); -} - -static struct device pseudo_primary = { - .bus_id = "pseudo_0", - .release = pseudo_0_release, -}; - -static int pseudo_lld_bus_match(struct device *dev, - struct device_driver *dev_driver) -{ - return 1; -} - -static struct bus_type pseudo_lld_bus = { - .name = "pseudo", - .match = pseudo_lld_bus_match, - .probe = sdebug_driver_probe, - .remove = sdebug_driver_remove, -}; - static void sdebug_release_adapter(struct device * dev) { struct sdebug_host_info *sdbg_host; @@ -3009,13 +3500,12 @@ static int sdebug_add_adapter(void) int k, devs_per_host; int error = 0; struct sdebug_host_info *sdbg_host; - struct sdebug_dev_info *sdbg_devinfo; - struct list_head *lh, *lh_sf; + struct sdebug_dev_info *sdbg_devinfo, *tmp; sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); if (NULL == sdbg_host) { printk(KERN_ERR "%s: out of memory at line %d\n", - __FUNCTION__, __LINE__); + __func__, __LINE__); return -ENOMEM; } @@ -3023,16 +3513,13 @@ static int sdebug_add_adapter(void) devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; for (k = 0; k < devs_per_host; k++) { - sdbg_devinfo = kzalloc(sizeof(*sdbg_devinfo),GFP_KERNEL); - if (NULL == sdbg_devinfo) { + sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL); + if (!sdbg_devinfo) { printk(KERN_ERR "%s: out of memory at line %d\n", - __FUNCTION__, __LINE__); + __func__, __LINE__); error = -ENOMEM; goto clean; } - sdbg_devinfo->sdbg_host = sdbg_host; - list_add_tail(&sdbg_devinfo->dev_list, - &sdbg_host->dev_info_list); } spin_lock(&sdebug_host_list_lock); @@ -3040,9 +3527,9 @@ static int sdebug_add_adapter(void) spin_unlock(&sdebug_host_list_lock); sdbg_host->dev.bus = &pseudo_lld_bus; - sdbg_host->dev.parent = &pseudo_primary; + sdbg_host->dev.parent = pseudo_primary; sdbg_host->dev.release = &sdebug_release_adapter; - sprintf(sdbg_host->dev.bus_id, "adapter%d", scsi_debug_add_host); + dev_set_name(&sdbg_host->dev, "adapter%d", scsi_debug_add_host); error = device_register(&sdbg_host->dev); @@ -3053,9 +3540,8 @@ static int sdebug_add_adapter(void) return error; clean: - list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { - sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, - dev_list); + list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, + dev_list) { list_del(&sdbg_devinfo->dev_list); kfree(sdbg_devinfo); } @@ -3083,20 +3569,408 @@ static void sdebug_remove_adapter(void) --scsi_debug_add_host; } +static +int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done) +{ + unsigned char *cmd = (unsigned char *) SCpnt->cmnd; + int len, k; + unsigned int num; + unsigned long long lba; + u32 ei_lba; + int errsts = 0; + int target = SCpnt->device->id; + struct sdebug_dev_info *devip = NULL; + int inj_recovered = 0; + int inj_transport = 0; + int inj_dif = 0; + int inj_dix = 0; + int inj_short = 0; + int delay_override = 0; + int unmap = 0; + + scsi_set_resid(SCpnt, 0); + if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmd) { + printk(KERN_INFO "scsi_debug: cmd "); + for (k = 0, len = SCpnt->cmd_len; k < len; ++k) + printk("%02x ", (int)cmd[k]); + printk("\n"); + } + + if (target == SCpnt->device->host->hostt->this_id) { + printk(KERN_INFO "scsi_debug: initiator's id used as " + "target!\n"); + return schedule_resp(SCpnt, NULL, done, + DID_NO_CONNECT << 16, 0); + } + + if ((SCpnt->device->lun >= scsi_debug_max_luns) && + (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS)) + return schedule_resp(SCpnt, NULL, done, + DID_NO_CONNECT << 16, 0); + devip = devInfoReg(SCpnt->device); + if (NULL == devip) + return schedule_resp(SCpnt, NULL, done, + DID_NO_CONNECT << 16, 0); + + if ((scsi_debug_every_nth != 0) && + (++scsi_debug_cmnd_count >= abs(scsi_debug_every_nth))) { + scsi_debug_cmnd_count = 0; + if (scsi_debug_every_nth < -1) + scsi_debug_every_nth = -1; + if (SCSI_DEBUG_OPT_TIMEOUT & scsi_debug_opts) + return 0; /* ignore command causing timeout */ + else if (SCSI_DEBUG_OPT_MAC_TIMEOUT & scsi_debug_opts && + scsi_medium_access_command(SCpnt)) + return 0; /* time out reads and writes */ + else if (SCSI_DEBUG_OPT_RECOVERED_ERR & scsi_debug_opts) + inj_recovered = 1; /* to reads and writes below */ + else if (SCSI_DEBUG_OPT_TRANSPORT_ERR & scsi_debug_opts) + inj_transport = 1; /* to reads and writes below */ + else if (SCSI_DEBUG_OPT_DIF_ERR & scsi_debug_opts) + inj_dif = 1; /* to reads and writes below */ + else if (SCSI_DEBUG_OPT_DIX_ERR & scsi_debug_opts) + inj_dix = 1; /* to reads and writes below */ + else if (SCSI_DEBUG_OPT_SHORT_TRANSFER & scsi_debug_opts) + inj_short = 1; + } + + if (devip->wlun) { + switch (*cmd) { + case INQUIRY: + case REQUEST_SENSE: + case TEST_UNIT_READY: + case REPORT_LUNS: + break; /* only allowable wlun commands */ + default: + if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) + printk(KERN_INFO "scsi_debug: Opcode: 0x%x " + "not supported for wlun\n", *cmd); + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_OPCODE, 0); + errsts = check_condition_result; + return schedule_resp(SCpnt, devip, done, errsts, + 0); + } + } + + switch (*cmd) { + case INQUIRY: /* mandatory, ignore unit attention */ + delay_override = 1; + errsts = resp_inquiry(SCpnt, target, devip); + break; + case REQUEST_SENSE: /* mandatory, ignore unit attention */ + delay_override = 1; + errsts = resp_requests(SCpnt, devip); + break; + case REZERO_UNIT: /* actually this is REWIND for SSC */ + case START_STOP: + errsts = resp_start_stop(SCpnt, devip); + break; + case ALLOW_MEDIUM_REMOVAL: + errsts = check_readiness(SCpnt, 1, devip); + if (errsts) + break; + if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) + printk(KERN_INFO "scsi_debug: Medium removal %s\n", + cmd[4] ? "inhibited" : "enabled"); + break; + case SEND_DIAGNOSTIC: /* mandatory */ + errsts = check_readiness(SCpnt, 1, devip); + break; + case TEST_UNIT_READY: /* mandatory */ + delay_override = 1; + errsts = check_readiness(SCpnt, 0, devip); + break; + case RESERVE: + errsts = check_readiness(SCpnt, 1, devip); + break; + case RESERVE_10: + errsts = check_readiness(SCpnt, 1, devip); + break; + case RELEASE: + errsts = check_readiness(SCpnt, 1, devip); + break; + case RELEASE_10: + errsts = check_readiness(SCpnt, 1, devip); + break; + case READ_CAPACITY: + errsts = resp_readcap(SCpnt, devip); + break; + case SERVICE_ACTION_IN: + if (cmd[1] == SAI_READ_CAPACITY_16) + errsts = resp_readcap16(SCpnt, devip); + else if (cmd[1] == SAI_GET_LBA_STATUS) { + + if (scsi_debug_lbp() == 0) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_COMMAND_OPCODE, 0); + errsts = check_condition_result; + } else + errsts = resp_get_lba_status(SCpnt, devip); + } else { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_OPCODE, 0); + errsts = check_condition_result; + } + break; + case MAINTENANCE_IN: + if (MI_REPORT_TARGET_PGS != cmd[1]) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_OPCODE, 0); + errsts = check_condition_result; + break; + } + errsts = resp_report_tgtpgs(SCpnt, devip); + break; + case READ_16: + case READ_12: + case READ_10: + /* READ{10,12,16} and DIF Type 2 are natural enemies */ + if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && + cmd[1] & 0xe0) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_COMMAND_OPCODE, 0); + errsts = check_condition_result; + break; + } + + if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || + scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && + (cmd[1] & 0xe0) == 0) + printk(KERN_ERR "Unprotected RD/WR to DIF device\n"); + + /* fall through */ + case READ_6: +read: + errsts = check_readiness(SCpnt, 0, devip); + if (errsts) + break; + if (scsi_debug_fake_rw) + break; + get_data_transfer_info(cmd, &lba, &num, &ei_lba); + + if (inj_short) + num /= 2; + + errsts = resp_read(SCpnt, lba, num, devip, ei_lba); + if (inj_recovered && (0 == errsts)) { + mk_sense_buffer(devip, RECOVERED_ERROR, + THRESHOLD_EXCEEDED, 0); + errsts = check_condition_result; + } else if (inj_transport && (0 == errsts)) { + mk_sense_buffer(devip, ABORTED_COMMAND, + TRANSPORT_PROBLEM, ACK_NAK_TO); + errsts = check_condition_result; + } else if (inj_dif && (0 == errsts)) { + mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); + errsts = illegal_condition_result; + } else if (inj_dix && (0 == errsts)) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); + errsts = illegal_condition_result; + } + break; + case REPORT_LUNS: /* mandatory, ignore unit attention */ + delay_override = 1; + errsts = resp_report_luns(SCpnt, devip); + break; + case VERIFY: /* 10 byte SBC-2 command */ + errsts = check_readiness(SCpnt, 0, devip); + break; + case WRITE_16: + case WRITE_12: + case WRITE_10: + /* WRITE{10,12,16} and DIF Type 2 are natural enemies */ + if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION && + cmd[1] & 0xe0) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_COMMAND_OPCODE, 0); + errsts = check_condition_result; + break; + } + + if ((scsi_debug_dif == SD_DIF_TYPE1_PROTECTION || + scsi_debug_dif == SD_DIF_TYPE3_PROTECTION) && + (cmd[1] & 0xe0) == 0) + printk(KERN_ERR "Unprotected RD/WR to DIF device\n"); + + /* fall through */ + case WRITE_6: +write: + errsts = check_readiness(SCpnt, 0, devip); + if (errsts) + break; + if (scsi_debug_fake_rw) + break; + get_data_transfer_info(cmd, &lba, &num, &ei_lba); + errsts = resp_write(SCpnt, lba, num, devip, ei_lba); + if (inj_recovered && (0 == errsts)) { + mk_sense_buffer(devip, RECOVERED_ERROR, + THRESHOLD_EXCEEDED, 0); + errsts = check_condition_result; + } else if (inj_dif && (0 == errsts)) { + mk_sense_buffer(devip, ABORTED_COMMAND, 0x10, 1); + errsts = illegal_condition_result; + } else if (inj_dix && (0 == errsts)) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, 0x10, 1); + errsts = illegal_condition_result; + } + break; + case WRITE_SAME_16: + case WRITE_SAME: + if (cmd[1] & 0x8) { + if ((*cmd == WRITE_SAME_16 && scsi_debug_lbpws == 0) || + (*cmd == WRITE_SAME && scsi_debug_lbpws10 == 0)) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_CDB, 0); + errsts = check_condition_result; + } else + unmap = 1; + } + if (errsts) + break; + errsts = check_readiness(SCpnt, 0, devip); + if (errsts) + break; + get_data_transfer_info(cmd, &lba, &num, &ei_lba); + errsts = resp_write_same(SCpnt, lba, num, devip, ei_lba, unmap); + break; + case UNMAP: + errsts = check_readiness(SCpnt, 0, devip); + if (errsts) + break; + + if (scsi_debug_unmap_max_desc == 0 || scsi_debug_lbpu == 0) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_COMMAND_OPCODE, 0); + errsts = check_condition_result; + } else + errsts = resp_unmap(SCpnt, devip); + break; + case MODE_SENSE: + case MODE_SENSE_10: + errsts = resp_mode_sense(SCpnt, target, devip); + break; + case MODE_SELECT: + errsts = resp_mode_select(SCpnt, 1, devip); + break; + case MODE_SELECT_10: + errsts = resp_mode_select(SCpnt, 0, devip); + break; + case LOG_SENSE: + errsts = resp_log_sense(SCpnt, devip); + break; + case SYNCHRONIZE_CACHE: + delay_override = 1; + errsts = check_readiness(SCpnt, 0, devip); + break; + case WRITE_BUFFER: + errsts = check_readiness(SCpnt, 1, devip); + break; + case XDWRITEREAD_10: + if (!scsi_bidi_cmnd(SCpnt)) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_CDB, 0); + errsts = check_condition_result; + break; + } + + errsts = check_readiness(SCpnt, 0, devip); + if (errsts) + break; + if (scsi_debug_fake_rw) + break; + get_data_transfer_info(cmd, &lba, &num, &ei_lba); + errsts = resp_read(SCpnt, lba, num, devip, ei_lba); + if (errsts) + break; + errsts = resp_write(SCpnt, lba, num, devip, ei_lba); + if (errsts) + break; + errsts = resp_xdwriteread(SCpnt, lba, num, devip); + break; + case VARIABLE_LENGTH_CMD: + if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION) { + + if ((cmd[10] & 0xe0) == 0) + printk(KERN_ERR + "Unprotected RD/WR to DIF device\n"); + + if (cmd[9] == READ_32) { + BUG_ON(SCpnt->cmd_len < 32); + goto read; + } + + if (cmd[9] == WRITE_32) { + BUG_ON(SCpnt->cmd_len < 32); + goto write; + } + } + + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_CDB, 0); + errsts = check_condition_result; + break; + + default: + if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) + printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " + "supported\n", *cmd); + errsts = check_readiness(SCpnt, 1, devip); + if (errsts) + break; /* Unit attention takes precedence */ + mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0); + errsts = check_condition_result; + break; + } + return schedule_resp(SCpnt, devip, done, errsts, + (delay_override ? 0 : scsi_debug_delay)); +} + +static DEF_SCSI_QCMD(scsi_debug_queuecommand) + +static struct scsi_host_template sdebug_driver_template = { + .show_info = scsi_debug_show_info, + .write_info = scsi_debug_write_info, + .proc_name = sdebug_proc_name, + .name = "SCSI DEBUG", + .info = scsi_debug_info, + .slave_alloc = scsi_debug_slave_alloc, + .slave_configure = scsi_debug_slave_configure, + .slave_destroy = scsi_debug_slave_destroy, + .ioctl = scsi_debug_ioctl, + .queuecommand = scsi_debug_queuecommand, + .eh_abort_handler = scsi_debug_abort, + .eh_bus_reset_handler = scsi_debug_bus_reset, + .eh_device_reset_handler = scsi_debug_device_reset, + .eh_host_reset_handler = scsi_debug_host_reset, + .bios_param = scsi_debug_biosparam, + .can_queue = SCSI_DEBUG_CANQUEUE, + .this_id = 7, + .sg_tablesize = 256, + .cmd_per_lun = 16, + .max_sectors = 0xffff, + .use_clustering = DISABLE_CLUSTERING, + .module = THIS_MODULE, +}; + static int sdebug_driver_probe(struct device * dev) { int error = 0; struct sdebug_host_info *sdbg_host; struct Scsi_Host *hpnt; + int host_prot; sdbg_host = to_sdebug_host(dev); - hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); - if (NULL == hpnt) { - printk(KERN_ERR "%s: scsi_register failed\n", __FUNCTION__); - error = -ENODEV; + sdebug_driver_template.can_queue = scsi_debug_max_queue; + if (scsi_debug_clustering) + sdebug_driver_template.use_clustering = ENABLE_CLUSTERING; + hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host)); + if (NULL == hpnt) { + printk(KERN_ERR "%s: scsi_register failed\n", __func__); + error = -ENODEV; return error; - } + } sdbg_host->shost = hpnt; *((struct sdebug_host_info **)hpnt->hostdata) = sdbg_host; @@ -3106,9 +3980,53 @@ static int sdebug_driver_probe(struct device * dev) hpnt->max_id = scsi_debug_num_tgts; hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ + host_prot = 0; + + switch (scsi_debug_dif) { + + case SD_DIF_TYPE1_PROTECTION: + host_prot = SHOST_DIF_TYPE1_PROTECTION; + if (scsi_debug_dix) + host_prot |= SHOST_DIX_TYPE1_PROTECTION; + break; + + case SD_DIF_TYPE2_PROTECTION: + host_prot = SHOST_DIF_TYPE2_PROTECTION; + if (scsi_debug_dix) + host_prot |= SHOST_DIX_TYPE2_PROTECTION; + break; + + case SD_DIF_TYPE3_PROTECTION: + host_prot = SHOST_DIF_TYPE3_PROTECTION; + if (scsi_debug_dix) + host_prot |= SHOST_DIX_TYPE3_PROTECTION; + break; + + default: + if (scsi_debug_dix) + host_prot |= SHOST_DIX_TYPE0_PROTECTION; + break; + } + + scsi_host_set_prot(hpnt, host_prot); + + printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n", + (host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", + (host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", + (host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", + (host_prot & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", + (host_prot & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", + (host_prot & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", + (host_prot & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); + + if (scsi_debug_guard == 1) + scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_IP); + else + scsi_host_set_guard(hpnt, SHOST_DIX_GUARD_CRC); + error = scsi_add_host(hpnt, &sdbg_host->dev); if (error) { - printk(KERN_ERR "%s: scsi_add_host failed\n", __FUNCTION__); + printk(KERN_ERR "%s: scsi_add_host failed\n", __func__); error = -ENODEV; scsi_host_put(hpnt); } else @@ -3120,23 +4038,21 @@ static int sdebug_driver_probe(struct device * dev) static int sdebug_driver_remove(struct device * dev) { - struct list_head *lh, *lh_sf; struct sdebug_host_info *sdbg_host; - struct sdebug_dev_info *sdbg_devinfo; + struct sdebug_dev_info *sdbg_devinfo, *tmp; sdbg_host = to_sdebug_host(dev); if (!sdbg_host) { printk(KERN_ERR "%s: Unable to locate host info\n", - __FUNCTION__); + __func__); return -ENODEV; } scsi_remove_host(sdbg_host->shost); - list_for_each_safe(lh, lh_sf, &sdbg_host->dev_info_list) { - sdbg_devinfo = list_entry(lh, struct sdebug_dev_info, - dev_list); + list_for_each_entry_safe(sdbg_devinfo, tmp, &sdbg_host->dev_info_list, + dev_list) { list_del(&sdbg_devinfo->dev_list); kfree(sdbg_devinfo); } @@ -3145,20 +4061,16 @@ static int sdebug_driver_remove(struct device * dev) return 0; } -static void sdebug_max_tgts_luns(void) +static int pseudo_lld_bus_match(struct device *dev, + struct device_driver *dev_driver) { - struct sdebug_host_info * sdbg_host; - struct Scsi_Host *hpnt; - - spin_lock(&sdebug_host_list_lock); - list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { - hpnt = sdbg_host->shost; - if ((hpnt->this_id >= 0) && - (scsi_debug_num_tgts > hpnt->this_id)) - hpnt->max_id = scsi_debug_num_tgts + 1; - else - hpnt->max_id = scsi_debug_num_tgts; - hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* scsi_debug_max_luns; */ - } - spin_unlock(&sdebug_host_list_lock); + return 1; } + +static struct bus_type pseudo_lld_bus = { + .name = "pseudo", + .match = pseudo_lld_bus_match, + .probe = sdebug_driver_probe, + .remove = sdebug_driver_remove, + .drv_groups = sdebug_drv_groups, +}; |