X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fscsi%2Fscsi_debug.c;h=a80303c6b3fdade137dfccaf9c36b22bb2fd432d;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=25c87cc6dcf41639d84795c0266f50b69fe4252f;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 25c87cc6d..a80303c6b 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -1,4 +1,4 @@ -/* +/* * linux/kernel/scsi_debug.c * vvvvvvvvvvvvvvvvvvvvvvv Original vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv * Copyright (C) 1992 Eric Youngdale @@ -7,11 +7,11 @@ * anything out of the ordinary is seen. * ^^^^^^^^^^^^^^^^^^^^^^^ Original ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ * - * This version is more generic, simulating a variable number of disk - * (or disk like devices) sharing a common amount of RAM - * + * This version is more generic, simulating a variable number of disk + * (or disk like devices) sharing a common amount of RAM * - * For documentation see http://www.torque.net/sg/sdebug25.html + * + * For documentation see http://www.torque.net/sg/sdebug26.html * * D. Gilbert (dpg) work for Magneto-Optical device test [20010421] * dpg: work for devfs large number of disks [20010809] @@ -24,7 +24,6 @@ * module options to "modprobe scsi_debug num_tgts=2" [20021221] */ -#include #include #include @@ -43,29 +42,30 @@ #include #include "scsi.h" -#include "hosts.h" +#include #include #include -#ifndef LINUX_VERSION_CODE -#include -#endif - #include "scsi_logging.h" #include "scsi_debug.h" -static const char * scsi_debug_version_str = "Version: 1.71 (20031007)"; +#define SCSI_DEBUG_VERSION "1.79" +static const char * scsi_debug_version_date = "20060604"; /* Additional Sense Code (ASC) used */ -#define NO_ADDED_SENSE 0x0 +#define NO_ADDITIONAL_SENSE 0x0 +#define LOGICAL_UNIT_NOT_READY 0x4 #define UNRECOVERED_READ_ERR 0x11 +#define PARAMETER_LIST_LENGTH_ERR 0x1a #define INVALID_OPCODE 0x20 #define ADDR_OUT_OF_RANGE 0x21 #define INVALID_FIELD_IN_CDB 0x24 +#define INVALID_FIELD_IN_PARAM_LIST 0x26 #define POWERON_RESET 0x29 #define SAVING_PARAMS_UNSUP 0x39 -#define THRESHHOLD_EXCEEDED 0x5d +#define THRESHOLD_EXCEEDED 0x5d +#define LOW_POWER_COND_ON 0x5e #define SDEBUG_TAGGED_QUEUING 0 /* 0 | MSG_SIMPLE_TAG | MSG_ORDERED_TAG */ @@ -76,11 +76,16 @@ static const char * scsi_debug_version_str = "Version: 1.71 (20031007)"; /* 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_DELAY 1 #define DEF_DEV_SIZE_MB 8 #define DEF_EVERY_NTH 0 -#define DEF_DELAY 1 -#define DEF_SCSI_LEVEL 3 +#define DEF_NUM_PARTS 0 #define DEF_OPTS 0 +#define DEF_SCSI_LEVEL 5 /* INQUIRY, byte2 [5->SPC-3] */ +#define DEF_PTYPE 0 +#define DEF_D_SENSE 0 +#define DEF_NO_LUN_0 0 +#define DEF_VIRTUAL_GB 0 /* bit mask values for scsi_debug_opts */ #define SCSI_DEBUG_OPT_NOISE 1 @@ -91,6 +96,13 @@ static const char * scsi_debug_version_str = "Version: 1.71 (20031007)"; * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set * - a RECOVERED_ERROR is simulated on successful read and write * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. + * + * When "every_nth" < 0 then after "- every_nth" commands: + * - a no response is simulated if SCSI_DEBUG_OPT_TIMEOUT is set + * - a RECOVERED_ERROR is simulated on successful read and write + * commands if SCSI_DEBUG_OPT_RECOVERED_ERR is set. + * This will continue until some other action occurs (e.g. the user + * writing a new value (other than -1 or 1) to every_nth via sysfs). */ /* when 1==SCSI_DEBUG_OPT_MEDIUM_ERR, a medium error is simulated at this @@ -100,22 +112,29 @@ static const char * scsi_debug_version_str = "Version: 1.71 (20031007)"; /* 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 +static int scsi_debug_add_host = DEF_NUM_HOST; +static int scsi_debug_delay = DEF_DELAY; static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; -static int scsi_debug_num_tgts = DEF_NUM_TGTS; /* targets per host */ -static int scsi_debug_opts = DEF_OPTS; static int scsi_debug_every_nth = DEF_EVERY_NTH; -static int scsi_debug_cmnd_count = 0; -static int scsi_debug_delay = DEF_DELAY; static int scsi_debug_max_luns = DEF_MAX_LUNS; +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_opts = DEF_OPTS; static int scsi_debug_scsi_level = DEF_SCSI_LEVEL; -static int scsi_debug_add_host = DEF_NUM_HOST; +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_virtual_gb = DEF_VIRTUAL_GB; + +static int scsi_debug_cmnd_count = 0; #define DEV_READONLY(TGT) (0) #define DEV_REMOVEABLE(TGT) (0) -#define PERIPH_DEVICE_TYPE(TGT) (TYPE_DISK); -static unsigned long sdebug_store_size; /* in bytes */ +static unsigned int sdebug_store_size; /* in bytes */ +static unsigned int sdebug_store_sectors; static sector_t sdebug_capacity; /* in sectors */ /* old BIOS stuff, kernel may get rid of them but some mode sense pages @@ -129,6 +148,8 @@ static int sdebug_sectors_per; /* sectors per cylinder */ #define SECT_SIZE (1 << POW2_SECT_SIZE) #define SECT_SIZE_PER(TGT) SECT_SIZE +#define SDEBUG_MAX_PARTS 4 + #define SDEBUG_SENSE_LEN 32 struct sdebug_dev_info { @@ -138,7 +159,9 @@ struct sdebug_dev_info { unsigned int target; unsigned int lun; struct sdebug_host_info *sdbg_host; + unsigned int wlun; char reset; + char stopped; char used; }; @@ -153,7 +176,7 @@ struct sdebug_host_info { container_of(d, struct sdebug_host_info, dev) static LIST_HEAD(sdebug_host_list); -static spinlock_t sdebug_host_list_lock = SPIN_LOCK_UNLOCKED; +static DEFINE_SPINLOCK(sdebug_host_list_lock); typedef void (* done_funct_t) (struct scsi_cmnd *); @@ -166,7 +189,7 @@ struct sdebug_queued_cmd { }; static struct sdebug_queued_cmd queued_arr[SCSI_DEBUG_CANQUEUE]; -static Scsi_Host_Template sdebug_driver_template = { +static struct scsi_host_template sdebug_driver_template = { .proc_info = scsi_debug_proc_info, .name = "SCSI DEBUG", .info = scsi_debug_info, @@ -182,9 +205,9 @@ static Scsi_Host_Template sdebug_driver_template = { .bios_param = scsi_debug_biosparam, .can_queue = SCSI_DEBUG_CANQUEUE, .this_id = 7, - .sg_tablesize = 64, - .cmd_per_lun = 3, - .max_sectors = 4096, + .sg_tablesize = 256, + .cmd_per_lun = 16, + .max_sectors = 0xffff, .unchecked_isa_dma = 0, .use_clustering = ENABLE_CLUSTERING, .module = THIS_MODULE, @@ -192,15 +215,13 @@ static Scsi_Host_Template sdebug_driver_template = { static unsigned char * fake_storep; /* ramdisk storage */ -static unsigned char spare_buff[SDEBUG_SENSE_LEN]; - static int num_aborts = 0; static int num_dev_resets = 0; static int num_bus_resets = 0; static int num_host_resets = 0; -static spinlock_t queued_arr_lock = SPIN_LOCK_UNLOCKED; -static rwlock_t atomic_rw = RW_LOCK_UNLOCKED; +static DEFINE_SPINLOCK(queued_arr_lock); +static DEFINE_RWLOCK(atomic_rw); static char sdebug_proc_name[] = "scsi_debug"; @@ -211,91 +232,94 @@ static struct bus_type pseudo_lld_bus; static struct device_driver sdebug_driverfs_driver = { .name = sdebug_proc_name, .bus = &pseudo_lld_bus, - .probe = sdebug_driver_probe, - .remove = sdebug_driver_remove, }; -static const int check_condition_result = +static const int check_condition_result = (DRIVER_SENSE << 24) | 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(unsigned char * cmd, int target, unsigned char * buff, - int bufflen, struct sdebug_dev_info * devip); -static int resp_mode_sense(unsigned char * cmd, int target, - unsigned char * buff, int bufflen, +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_read(struct scsi_cmnd * SCpnt, int upper_blk, int block, - int num, struct sdebug_dev_info * devip); -static int resp_write(struct scsi_cmnd * SCpnt, int upper_blk, int block, - int num, struct sdebug_dev_info * devip); -static int resp_report_luns(unsigned char * cmd, unsigned char * buff, - int bufflen, 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 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, int inbandLen); -static int check_reset(struct scsi_cmnd * SCpnt, - struct sdebug_dev_info * devip); -static int schedule_resp(struct scsi_cmnd * cmnd, - struct sdebug_dev_info * devip, +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_all_queued(void); +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 dev_id_num, - const char * dev_id_str, int dev_id_str_len); -static void do_create_driverfs_files(void); +static int inquiry_evpd_83(unsigned char * arr, 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 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 unsigned char * scatg2virt(const struct scatterlist * sclp) -{ - if (NULL == sclp) - return NULL; - else if (sclp->page) - return (unsigned char *)page_address(sclp->page) + - sclp->offset; - else - return NULL; -} static int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) { unsigned char *cmd = (unsigned char *) SCpnt->cmnd; - int block, upper_blk, num; - unsigned char *buff; + int len, k, j; + unsigned int num; + unsigned long long lba; int errsts = 0; int target = SCpnt->device->id; - int bufflen = SCpnt->request_bufflen; - unsigned long capac; struct sdebug_dev_info * devip = NULL; - unsigned char * sbuff; int inj_recovered = 0; + int delay_override = 0; if (done == NULL) return 0; /* assume mid level reprocessing command */ - if (SCpnt->use_sg) { /* just use first element */ - struct scatterlist *sgpnt = (struct scatterlist *) - SCpnt->request_buffer; - - buff = scatg2virt(&sgpnt[0]); - bufflen = sgpnt[0].length; - /* READ and WRITE process scatterlist themselves */ - } - else - buff = (unsigned char *) SCpnt->request_buffer; - if (NULL == buff) { - buff = spare_buff; /* assume cmd moves no data */ - bufflen = SDEBUG_SENSE_LEN; + SCpnt->resid = 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"); @@ -303,178 +327,205 @@ int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) DID_NO_CONNECT << 16, 0); } - if (SCpnt->device->lun >= scsi_debug_max_luns) - return schedule_resp(SCpnt, NULL, done, + 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, + return schedule_resp(SCpnt, NULL, done, DID_NO_CONNECT << 16, 0); - if ((scsi_debug_every_nth > 0) && - (++scsi_debug_cmnd_count >= scsi_debug_every_nth)) { - scsi_debug_cmnd_count =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_RECOVERED_ERR & scsi_debug_opts) inj_recovered = 1; /* to reads and writes below */ } + 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 */ - errsts = resp_inquiry(cmd, target, buff, bufflen, devip); + case INQUIRY: /* mandatory, ignore unit attention */ + delay_override = 1; + errsts = resp_inquiry(SCpnt, target, devip); break; - case REQUEST_SENSE: /* mandatory */ - /* Since this driver indicates autosense by placing the - * sense buffer in the scsi_cmnd structure in the response - * (when SAM_STAT_CHECK_CONDITION is set), the mid level - * shouldn't need to call REQUEST_SENSE */ - if (devip) { - sbuff = devip->sense_buff; - memcpy(buff, sbuff, (bufflen < SDEBUG_SENSE_LEN) ? - bufflen : SDEBUG_SENSE_LEN); - mk_sense_buffer(devip, 0, NO_ADDED_SENSE, 0, 7); - } else { - memset(buff, 0, bufflen); - buff[0] = 0x70; - } + 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 = check_reset(SCpnt, devip); + errsts = resp_start_stop(SCpnt, devip); break; case ALLOW_MEDIUM_REMOVAL: - if ((errsts = check_reset(SCpnt, devip))) + if ((errsts = check_readiness(SCpnt, 1, devip))) break; if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) - printk("\tMedium removal %s\n", - cmd[4] ? "inhibited" : "enabled"); + printk(KERN_INFO "scsi_debug: Medium removal %s\n", + cmd[4] ? "inhibited" : "enabled"); break; case SEND_DIAGNOSTIC: /* mandatory */ - memset(buff, 0, bufflen); + errsts = check_readiness(SCpnt, 1, devip); break; case TEST_UNIT_READY: /* mandatory */ - memset(buff, 0, bufflen); + delay_override = 1; + errsts = check_readiness(SCpnt, 0, devip); break; case RESERVE: - errsts = check_reset(SCpnt, devip); - memset(buff, 0, bufflen); + errsts = check_readiness(SCpnt, 1, devip); break; case RESERVE_10: - errsts = check_reset(SCpnt, devip); - memset(buff, 0, bufflen); + errsts = check_readiness(SCpnt, 1, devip); break; case RELEASE: - errsts = check_reset(SCpnt, devip); - memset(buff, 0, bufflen); + errsts = check_readiness(SCpnt, 1, devip); break; case RELEASE_10: - errsts = check_reset(SCpnt, devip); - memset(buff, 0, bufflen); + errsts = check_readiness(SCpnt, 1, devip); break; case READ_CAPACITY: - errsts = check_reset(SCpnt, devip); - memset(buff, 0, bufflen); - if (bufflen > 7) { - capac = (unsigned long)sdebug_capacity - 1; - buff[0] = (capac >> 24); - buff[1] = (capac >> 16) & 0xff; - buff[2] = (capac >> 8) & 0xff; - buff[3] = capac & 0xff; - buff[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; - buff[7] = SECT_SIZE_PER(target) & 0xff; + 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 READ_16: case READ_12: case READ_10: case READ_6: - if ((errsts = check_reset(SCpnt, devip))) + if ((errsts = check_readiness(SCpnt, 0, devip))) break; - upper_blk = 0; if ((*cmd) == READ_16) { - upper_blk = cmd[5] + (cmd[4] << 8) + - (cmd[3] << 16) + (cmd[2] << 24); - block = cmd[9] + (cmd[8] << 8) + - (cmd[7] << 16) + (cmd[6] << 24); - num = cmd[13] + (cmd[12] << 8) + + for (lba = 0, j = 0; j < 8; ++j) { + if (j > 0) + lba <<= 8; + lba += cmd[2 + j]; + } + num = cmd[13] + (cmd[12] << 8) + (cmd[11] << 16) + (cmd[10] << 24); } else if ((*cmd) == READ_12) { - block = cmd[5] + (cmd[4] << 8) + + lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); - num = cmd[9] + (cmd[8] << 8) + + num = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); } else if ((*cmd) == READ_10) { - block = cmd[5] + (cmd[4] << 8) + + lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); num = cmd[8] + (cmd[7] << 8); - } else { - block = cmd[3] + (cmd[2] << 8) + + } else { /* READ (6) */ + lba = cmd[3] + (cmd[2] << 8) + ((cmd[1] & 0x1f) << 16); - num = cmd[4]; + num = (0 == cmd[4]) ? 256 : cmd[4]; } - errsts = resp_read(SCpnt, upper_blk, block, num, devip); + errsts = resp_read(SCpnt, lba, num, devip); if (inj_recovered && (0 == errsts)) { - mk_sense_buffer(devip, RECOVERED_ERROR, - THRESHHOLD_EXCEEDED, 0, 18); + mk_sense_buffer(devip, RECOVERED_ERROR, + THRESHOLD_EXCEEDED, 0); errsts = check_condition_result; } break; - case REPORT_LUNS: - errsts = resp_report_luns(cmd, buff, bufflen, devip); + 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: case WRITE_6: - if ((errsts = check_reset(SCpnt, devip))) + if ((errsts = check_readiness(SCpnt, 0, devip))) break; - upper_blk = 0; if ((*cmd) == WRITE_16) { - upper_blk = cmd[5] + (cmd[4] << 8) + - (cmd[3] << 16) + (cmd[2] << 24); - block = cmd[9] + (cmd[8] << 8) + - (cmd[7] << 16) + (cmd[6] << 24); - num = cmd[13] + (cmd[12] << 8) + + for (lba = 0, j = 0; j < 8; ++j) { + if (j > 0) + lba <<= 8; + lba += cmd[2 + j]; + } + num = cmd[13] + (cmd[12] << 8) + (cmd[11] << 16) + (cmd[10] << 24); } else if ((*cmd) == WRITE_12) { - block = cmd[5] + (cmd[4] << 8) + + lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); - num = cmd[9] + (cmd[8] << 8) + + num = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); } else if ((*cmd) == WRITE_10) { - block = cmd[5] + (cmd[4] << 8) + + lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); num = cmd[8] + (cmd[7] << 8); - } else { - block = cmd[3] + (cmd[2] << 8) + + } else { /* WRITE (6) */ + lba = cmd[3] + (cmd[2] << 8) + ((cmd[1] & 0x1f) << 16); - num = cmd[4]; + num = (0 == cmd[4]) ? 256 : cmd[4]; } - errsts = resp_write(SCpnt, upper_blk, block, num, devip); + errsts = resp_write(SCpnt, lba, num, devip); if (inj_recovered && (0 == errsts)) { - mk_sense_buffer(devip, RECOVERED_ERROR, - THRESHHOLD_EXCEEDED, 0, 18); + 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(cmd, target, buff, bufflen, devip); + 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: - memset(buff, 0, bufflen); + delay_override = 1; + errsts = check_readiness(SCpnt, 0, devip); break; default: - if ((errsts = check_reset(SCpnt, devip))) - break; - mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_OPCODE, 0, 18); + 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, scsi_debug_delay); + 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 *arg) +static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void __user *arg) { if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) { printk(KERN_INFO "scsi_debug: ioctl: cmd=0x%x\n", cmd); @@ -483,120 +534,650 @@ static int scsi_debug_ioctl(struct scsi_device *dev, int cmd, void *arg) /* return -ENOTTY; // correct return but upsets fdisk */ } -static int check_reset(struct scsi_cmnd * SCpnt, struct sdebug_dev_info * devip) +static int check_readiness(struct scsi_cmnd * SCpnt, int reset_only, + struct sdebug_dev_info * devip) { if (devip->reset) { + if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) + printk(KERN_INFO "scsi_debug: Reporting Unit " + "attention: power on reset\n"); devip->reset = 0; - mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0, 18); + mk_sense_buffer(devip, UNIT_ATTENTION, POWERON_RESET, 0); + return check_condition_result; + } + if ((0 == reset_only) && devip->stopped) { + if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) + printk(KERN_INFO "scsi_debug: Reporting Not " + "ready: initializing command required\n"); + mk_sense_buffer(devip, NOT_READY, LOGICAL_UNIT_NOT_READY, + 0x2); return check_condition_result; } return 0; } -#define SDEBUG_LONG_INQ_SZ 58 -#define SDEBUG_MAX_INQ_ARR_SZ 128 +/* Returns 0 if ok else (DID_ERROR << 16). Sets scp->resid . */ +static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, + int arr_len) +{ + int k, req_len, act_len, len, active; + void * kaddr; + void * kaddr_off; + struct scatterlist * sgpnt; + + if (0 == scp->request_bufflen) + return 0; + if (NULL == scp->request_buffer) + return (DID_ERROR << 16); + if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || + (scp->sc_data_direction == DMA_FROM_DEVICE))) + return (DID_ERROR << 16); + if (0 == scp->use_sg) { + req_len = scp->request_bufflen; + act_len = (req_len < arr_len) ? req_len : arr_len; + memcpy(scp->request_buffer, arr, act_len); + if (scp->resid) + scp->resid -= act_len; + else + scp->resid = req_len - act_len; + return 0; + } + sgpnt = (struct scatterlist *)scp->request_buffer; + active = 1; + for (k = 0, req_len = 0, act_len = 0; k < scp->use_sg; ++k, ++sgpnt) { + if (active) { + kaddr = (unsigned char *) + kmap_atomic(sgpnt->page, KM_USER0); + if (NULL == kaddr) + return (DID_ERROR << 16); + kaddr_off = (unsigned char *)kaddr + sgpnt->offset; + len = sgpnt->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 += sgpnt->length; + } + if (scp->resid) + scp->resid -= act_len; + else + scp->resid = req_len - 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) +{ + int k, req_len, len, fin; + void * kaddr; + void * kaddr_off; + struct scatterlist * sgpnt; + + if (0 == scp->request_bufflen) + return 0; + if (NULL == scp->request_buffer) + return -1; + if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || + (scp->sc_data_direction == DMA_TO_DEVICE))) + return -1; + if (0 == scp->use_sg) { + req_len = scp->request_bufflen; + len = (req_len < max_arr_len) ? req_len : max_arr_len; + memcpy(arr, scp->request_buffer, len); + return len; + } + sgpnt = (struct scatterlist *)scp->request_buffer; + for (k = 0, req_len = 0, fin = 0; k < scp->use_sg; ++k, ++sgpnt) { + kaddr = (unsigned char *)kmap_atomic(sgpnt->page, KM_USER0); + if (NULL == kaddr) + return -1; + kaddr_off = (unsigned char *)kaddr + sgpnt->offset; + len = sgpnt->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 += sgpnt->length; + } + return req_len; +} + -static const char * vendor_id = "Linux "; -static const char * product_id = "scsi_debug "; -static const char * product_rev = "0004"; +static const char * inq_vendor_id = "Linux "; +static const char * inq_product_id = "scsi_debug "; +static const char * inq_product_rev = "0004"; -static int inquiry_evpd_83(unsigned char * arr, int dev_id_num, - const char * dev_id_str, int dev_id_str_len) +static int inquiry_evpd_83(unsigned char * arr, int target_dev_id, + int dev_id_num, const char * dev_id_str, + int dev_id_str_len) { - int num; + int num, port_a; + char b[32]; - /* Two identification descriptors: */ + port_a = target_dev_id + 1; /* T10 vendor identifier field format (faked) */ arr[0] = 0x2; /* ASCII */ arr[1] = 0x1; arr[2] = 0x0; - memcpy(&arr[4], vendor_id, 8); - memcpy(&arr[12], product_id, 16); + memcpy(&arr[4], inq_vendor_id, 8); + memcpy(&arr[12], inq_product_id, 16); memcpy(&arr[28], dev_id_str, dev_id_str_len); num = 8 + 16 + dev_id_str_len; arr[3] = num; num += 4; - /* NAA IEEE registered identifier (faked) */ - arr[num] = 0x1; /* binary */ - arr[num + 1] = 0x3; - arr[num + 2] = 0x0; - arr[num + 3] = 0x8; - arr[num + 4] = 0x51; /* ieee company id=0x123456 (faked) */ - arr[num + 5] = 0x23; - arr[num + 6] = 0x45; - arr[num + 7] = 0x60; - arr[num + 8] = (dev_id_num >> 24); - arr[num + 9] = (dev_id_num >> 16) & 0xff; - arr[num + 10] = (dev_id_num >> 8) & 0xff; - arr[num + 11] = dev_id_num & 0xff; - return num + 12; -} - -static int resp_inquiry(unsigned char * cmd, int target, unsigned char * buff, - int bufflen, struct sdebug_dev_info * devip) + if (dev_id_num >= 0) { + /* NAA-5, Logical unit identifier (binary) */ + arr[num++] = 0x1; /* binary (not necessarily sas) */ + arr[num++] = 0x3; /* PIV=0, lu, naa */ + arr[num++] = 0x0; + arr[num++] = 0x8; + arr[num++] = 0x53; /* naa-5 ieee company id=0x333333 (fake) */ + arr[num++] = 0x33; + arr[num++] = 0x33; + arr[num++] = 0x30; + arr[num++] = (dev_id_num >> 24); + arr[num++] = (dev_id_num >> 16) & 0xff; + arr[num++] = (dev_id_num >> 8) & 0xff; + arr[num++] = dev_id_num & 0xff; + /* Target relative port number */ + arr[num++] = 0x61; /* proto=sas, binary */ + arr[num++] = 0x94; /* PIV=1, target port, rel port */ + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x4; /* length */ + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x0; + arr[num++] = 0x1; /* relative port A */ + } + /* NAA-5, Target port identifier */ + arr[num++] = 0x61; /* proto=sas, binary */ + arr[num++] = 0x93; /* piv=1, target port, naa */ + arr[num++] = 0x0; + arr[num++] = 0x8; + arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ + arr[num++] = 0x22; + arr[num++] = 0x22; + arr[num++] = 0x20; + arr[num++] = (port_a >> 24); + arr[num++] = (port_a >> 16) & 0xff; + arr[num++] = (port_a >> 8) & 0xff; + arr[num++] = port_a & 0xff; + /* NAA-5, Target device identifier */ + arr[num++] = 0x61; /* proto=sas, binary */ + arr[num++] = 0xa3; /* piv=1, target device, naa */ + arr[num++] = 0x0; + arr[num++] = 0x8; + arr[num++] = 0x52; /* naa-5, company id=0x222222 (fake) */ + arr[num++] = 0x22; + arr[num++] = 0x22; + arr[num++] = 0x20; + arr[num++] = (target_dev_id >> 24); + arr[num++] = (target_dev_id >> 16) & 0xff; + arr[num++] = (target_dev_id >> 8) & 0xff; + arr[num++] = target_dev_id & 0xff; + /* SCSI name string: Target device identifier */ + arr[num++] = 0x63; /* proto=sas, UTF-8 */ + arr[num++] = 0xa8; /* piv=1, target device, SCSI name string */ + arr[num++] = 0x0; + arr[num++] = 24; + memcpy(arr + num, "naa.52222220", 12); + num += 12; + snprintf(b, sizeof(b), "%08X", target_dev_id); + memcpy(arr + num, b, 8); + num += 8; + memset(arr + num, 0, 4); + num += 4; + return num; +} + + +static unsigned char vpd84_data[] = { +/* from 4th byte */ 0x22,0x22,0x22,0x0,0xbb,0x0, + 0x22,0x22,0x22,0x0,0xbb,0x1, + 0x22,0x22,0x22,0x0,0xbb,0x2, +}; + +static int inquiry_evpd_84(unsigned char * arr) +{ + memcpy(arr, vpd84_data, sizeof(vpd84_data)); + return sizeof(vpd84_data); +} + +static int inquiry_evpd_85(unsigned char * arr) +{ + int num = 0; + const char * na1 = "https://www.kernel.org/config"; + const char * na2 = "http://www.kernel.org/log"; + int plen, olen; + + arr[num++] = 0x1; /* lu, storage config */ + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x0; + olen = strlen(na1); + plen = olen + 1; + if (plen % 4) + plen = ((plen / 4) + 1) * 4; + arr[num++] = plen; /* length, null termianted, padded */ + memcpy(arr + num, na1, olen); + memset(arr + num + olen, 0, plen - olen); + num += plen; + + arr[num++] = 0x4; /* lu, logging */ + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x0; + olen = strlen(na2); + plen = olen + 1; + if (plen % 4) + plen = ((plen / 4) + 1) * 4; + arr[num++] = plen; /* length, null terminated, padded */ + memcpy(arr + num, na2, olen); + memset(arr + num + olen, 0, plen - olen); + num += plen; + + return num; +} + +/* SCSI ports VPD page */ +static int inquiry_evpd_88(unsigned char * arr, int target_dev_id) +{ + int num = 0; + int port_a, port_b; + + port_a = target_dev_id + 1; + port_b = port_a + 1; + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x0; + arr[num++] = 0x1; /* relative port 1 (primary) */ + memset(arr + num, 0, 6); + num += 6; + arr[num++] = 0x0; + arr[num++] = 12; /* length tp descriptor */ + /* naa-5 target port identifier (A) */ + arr[num++] = 0x61; /* proto=sas, binary */ + arr[num++] = 0x93; /* PIV=1, target port, NAA */ + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x8; /* length */ + arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ + arr[num++] = 0x22; + arr[num++] = 0x22; + arr[num++] = 0x20; + arr[num++] = (port_a >> 24); + arr[num++] = (port_a >> 16) & 0xff; + arr[num++] = (port_a >> 8) & 0xff; + arr[num++] = port_a & 0xff; + + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x0; + arr[num++] = 0x2; /* relative port 2 (secondary) */ + memset(arr + num, 0, 6); + num += 6; + arr[num++] = 0x0; + arr[num++] = 12; /* length tp descriptor */ + /* naa-5 target port identifier (B) */ + arr[num++] = 0x61; /* proto=sas, binary */ + arr[num++] = 0x93; /* PIV=1, target port, NAA */ + arr[num++] = 0x0; /* reserved */ + arr[num++] = 0x8; /* length */ + arr[num++] = 0x52; /* NAA-5, company_id=0x222222 (fake) */ + arr[num++] = 0x22; + arr[num++] = 0x22; + arr[num++] = 0x20; + arr[num++] = (port_b >> 24); + arr[num++] = (port_b >> 16) & 0xff; + arr[num++] = (port_b >> 8) & 0xff; + arr[num++] = port_b & 0xff; + + return num; +} + + +static unsigned char vpd89_data[] = { +/* from 4th byte */ 0,0,0,0, +'l','i','n','u','x',' ',' ',' ', +'S','A','T',' ','s','c','s','i','_','d','e','b','u','g',' ',' ', +'1','2','3','4', +0x34,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0, +0xec,0,0,0, +0x5a,0xc,0xff,0x3f,0x37,0xc8,0x10,0,0,0,0,0,0x3f,0,0,0, +0,0,0,0,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x58,0x20,0x20,0x20,0x20, +0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0,0,0,0x40,0x4,0,0x2e,0x33, +0x38,0x31,0x20,0x20,0x20,0x20,0x54,0x53,0x38,0x33,0x30,0x30,0x33,0x31, +0x53,0x41, +0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, +0x20,0x20, +0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, +0x10,0x80, +0,0,0,0x2f,0,0,0,0x2,0,0x2,0x7,0,0xff,0xff,0x1,0, +0x3f,0,0xc1,0xff,0x3e,0,0x10,0x1,0xb0,0xf8,0x50,0x9,0,0,0x7,0, +0x3,0,0x78,0,0x78,0,0xf0,0,0x78,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0x2,0,0,0,0,0,0,0, +0x7e,0,0x1b,0,0x6b,0x34,0x1,0x7d,0x3,0x40,0x69,0x34,0x1,0x3c,0x3,0x40, +0x7f,0x40,0,0,0,0,0xfe,0xfe,0,0,0,0,0,0xfe,0,0, +0,0,0,0,0,0,0,0,0xb0,0xf8,0x50,0x9,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0x1,0,0xb0,0xf8,0x50,0x9,0xb0,0xf8,0x50,0x9,0x20,0x20,0x2,0,0xb6,0x42, +0,0x80,0x8a,0,0x6,0x3c,0xa,0x3c,0xff,0xff,0xc6,0x7,0,0x1,0,0x8, +0xf0,0xf,0,0x10,0x2,0,0x30,0,0,0,0,0,0,0,0x6,0xfe, +0,0,0x2,0,0x50,0,0x8a,0,0x4f,0x95,0,0,0x21,0,0xb,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xa5,0x51, +}; + +static int inquiry_evpd_89(unsigned char * arr) +{ + memcpy(arr, vpd89_data, sizeof(vpd89_data)); + return sizeof(vpd89_data); +} + + +static unsigned char vpdb0_data[] = { + /* from 4th byte */ 0,0,0,4, + 0,0,0x4,0, + 0,0,0,64, +}; + +static int inquiry_evpd_b0(unsigned char * arr) +{ + memcpy(arr, vpdb0_data, sizeof(vpdb0_data)); + 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; + } + return sizeof(vpdb0_data); +} + + +#define SDEBUG_LONG_INQ_SZ 96 +#define SDEBUG_MAX_INQ_ARR_SZ 584 + +static int resp_inquiry(struct scsi_cmnd * scp, int target, + struct sdebug_dev_info * devip) { unsigned char pq_pdt; unsigned char arr[SDEBUG_MAX_INQ_ARR_SZ]; - int min_len = bufflen > SDEBUG_MAX_INQ_ARR_SZ ? - SDEBUG_MAX_INQ_ARR_SZ : bufflen; + unsigned char *cmd = (unsigned char *)scp->cmnd; + int alloc_len, n; - if (bufflen < cmd[4]) - printk(KERN_INFO "scsi_debug: inquiry: bufflen=%d " - "< alloc_length=%d\n", bufflen, (int)cmd[4]); - memset(buff, 0, bufflen); + alloc_len = (cmd[3] << 8) + cmd[4]; memset(arr, 0, SDEBUG_MAX_INQ_ARR_SZ); - pq_pdt = PERIPH_DEVICE_TYPE(target); + if (devip->wlun) + pq_pdt = 0x1e; /* present, wlun */ + else if (scsi_debug_no_lun_0 && (0 == devip->lun)) + pq_pdt = 0x7f; /* not present, no device type */ + else + pq_pdt = (scsi_debug_ptype & 0x1f); arr[0] = pq_pdt; if (0x2 & cmd[1]) { /* CMDDT bit set */ mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, - 0, 18); + 0); return check_condition_result; } else if (0x1 & cmd[1]) { /* EVPD bit set */ - int dev_id_num, len; - char dev_id_str[6]; + int lu_id_num, target_dev_id, len; + char lu_id_str[6]; + int host_no = devip->sdbg_host->shost->host_no; - dev_id_num = ((devip->sdbg_host->shost->host_no + 1) * 2000) + - (devip->target * 1000) + devip->lun; - len = scnprintf(dev_id_str, 6, "%d", dev_id_num); + lu_id_num = devip->wlun ? -1 : (((host_no + 1) * 2000) + + (devip->target * 1000) + devip->lun); + target_dev_id = ((host_no + 1) * 2000) + + (devip->target * 1000) - 3; + len = scnprintf(lu_id_str, 6, "%d", lu_id_num); if (0 == cmd[2]) { /* supported vital product data pages */ - arr[3] = 3; - arr[4] = 0x0; /* this page */ - arr[5] = 0x80; /* unit serial number */ - arr[6] = 0x83; /* device identification */ + arr[1] = cmd[2]; /*sanity */ + n = 4; + arr[n++] = 0x0; /* this page */ + arr[n++] = 0x80; /* unit serial number */ + arr[n++] = 0x83; /* device identification */ + arr[n++] = 0x84; /* software interface ident. */ + arr[n++] = 0x85; /* management network addresses */ + arr[n++] = 0x86; /* extended inquiry */ + arr[n++] = 0x87; /* mode page policy */ + arr[n++] = 0x88; /* SCSI ports */ + arr[n++] = 0x89; /* ATA information */ + arr[n++] = 0xb0; /* Block limits (SBC) */ + arr[3] = n - 4; /* number of supported VPD pages */ } else if (0x80 == cmd[2]) { /* unit serial number */ - arr[1] = 0x80; + arr[1] = cmd[2]; /*sanity */ arr[3] = len; - memcpy(&arr[4], dev_id_str, len); + memcpy(&arr[4], lu_id_str, len); } else if (0x83 == cmd[2]) { /* device identification */ - arr[1] = 0x83; - arr[3] = inquiry_evpd_83(&arr[4], dev_id_num, - dev_id_str, len); + arr[1] = cmd[2]; /*sanity */ + arr[3] = inquiry_evpd_83(&arr[4], target_dev_id, + lu_id_num, lu_id_str, len); + } else if (0x84 == cmd[2]) { /* Software interface ident. */ + arr[1] = cmd[2]; /*sanity */ + arr[3] = inquiry_evpd_84(&arr[4]); + } else if (0x85 == cmd[2]) { /* Management network addresses */ + arr[1] = cmd[2]; /*sanity */ + arr[3] = inquiry_evpd_85(&arr[4]); + } else if (0x86 == cmd[2]) { /* extended inquiry */ + arr[1] = cmd[2]; /*sanity */ + arr[3] = 0x3c; /* number of following entries */ + arr[4] = 0x0; /* no protection stuff */ + arr[5] = 0x7; /* head of q, ordered + simple q's */ + } else if (0x87 == cmd[2]) { /* mode page policy */ + arr[1] = cmd[2]; /*sanity */ + arr[3] = 0x8; /* number of following entries */ + arr[4] = 0x2; /* disconnect-reconnect mp */ + arr[6] = 0x80; /* mlus, shared */ + arr[8] = 0x18; /* protocol specific lu */ + arr[10] = 0x82; /* mlus, per initiator port */ + } else if (0x88 == cmd[2]) { /* SCSI Ports */ + arr[1] = cmd[2]; /*sanity */ + arr[3] = inquiry_evpd_88(&arr[4], target_dev_id); + } else if (0x89 == cmd[2]) { /* ATA information */ + arr[1] = cmd[2]; /*sanity */ + n = inquiry_evpd_89(&arr[4]); + arr[2] = (n >> 8); + arr[3] = (n & 0xff); + } else if (0xb0 == cmd[2]) { /* Block limits (SBC) */ + arr[1] = cmd[2]; /*sanity */ + arr[3] = inquiry_evpd_b0(&arr[4]); } else { /* Illegal request, invalid field in cdb */ - mk_sense_buffer(devip, ILLEGAL_REQUEST, - INVALID_FIELD_IN_CDB, 0, 18); + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_CDB, 0); return check_condition_result; } - memcpy(buff, arr, min_len); - return 0; + len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); + return fill_from_dev_buffer(scp, arr, + min(len, SDEBUG_MAX_INQ_ARR_SZ)); } /* drops through here for a standard inquiry */ arr[1] = DEV_REMOVEABLE(target) ? 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[7] = 0x3a; /* claim: WBUS16, SYNC, LINKED + CMDQUE */ - memcpy(&arr[8], vendor_id, 8); - memcpy(&arr[16], product_id, 16); - memcpy(&arr[32], product_rev, 4); - memcpy(buff, arr, min_len); + arr[6] = 0x10; /* claim: MultiP */ + /* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */ + arr[7] = 0xa; /* claim: LINKED + CMDQUE */ + memcpy(&arr[8], inq_vendor_id, 8); + memcpy(&arr[16], inq_product_id, 16); + memcpy(&arr[32], inq_product_rev, 4); + /* version descriptors (2 bytes each) follow */ + arr[58] = 0x0; arr[59] = 0x77; /* SAM-3 ANSI */ + arr[60] = 0x3; arr[61] = 0x14; /* SPC-3 ANSI */ + n = 62; + if (scsi_debug_ptype == 0) { + arr[n++] = 0x3; arr[n++] = 0x3d; /* SBC-2 ANSI */ + } else if (scsi_debug_ptype == 1) { + arr[n++] = 0x3; arr[n++] = 0x60; /* SSC-2 no version */ + } + arr[n++] = 0xc; arr[n++] = 0xf; /* SAS-1.1 rev 10 */ + return fill_from_dev_buffer(scp, arr, + min(alloc_len, SDEBUG_LONG_INQ_SZ)); +} + +static int resp_requests(struct scsi_cmnd * scp, + struct sdebug_dev_info * devip) +{ + unsigned char * sbuff; + unsigned char *cmd = (unsigned char *)scp->cmnd; + unsigned char arr[SDEBUG_SENSE_LEN]; + int want_dsense; + int len = 18; + + memset(arr, 0, sizeof(arr)); + if (devip->reset == 1) + mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); + want_dsense = !!(cmd[1] & 1) || scsi_debug_dsense; + sbuff = devip->sense_buff; + if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) { + if (want_dsense) { + arr[0] = 0x72; + arr[1] = 0x0; /* NO_SENSE in sense_key */ + arr[2] = THRESHOLD_EXCEEDED; + arr[3] = 0xff; /* TEST set and MRIE==6 */ + } else { + arr[0] = 0x70; + arr[2] = 0x0; /* NO_SENSE in sense_key */ + arr[7] = 0xa; /* 18 byte sense buffer */ + arr[12] = THRESHOLD_EXCEEDED; + arr[13] = 0xff; /* TEST set and MRIE==6 */ + } + } else if (devip->stopped) { + if (want_dsense) { + arr[0] = 0x72; + arr[1] = 0x0; /* NO_SENSE in sense_key */ + arr[2] = LOW_POWER_COND_ON; + arr[3] = 0x0; /* TEST set and MRIE==6 */ + } else { + arr[0] = 0x70; + arr[2] = 0x0; /* NO_SENSE in sense_key */ + arr[7] = 0xa; /* 18 byte sense buffer */ + arr[12] = LOW_POWER_COND_ON; + arr[13] = 0x0; /* TEST set and MRIE==6 */ + } + } else { + memcpy(arr, sbuff, SDEBUG_SENSE_LEN); + if ((cmd[1] & 1) && (! scsi_debug_dsense)) { + /* DESC bit set and sense_buff in fixed format */ + memset(arr, 0, sizeof(arr)); + arr[0] = 0x72; + arr[1] = sbuff[2]; /* sense key */ + arr[2] = sbuff[12]; /* asc */ + arr[3] = sbuff[13]; /* ascq */ + len = 8; + } + } + mk_sense_buffer(devip, 0, NO_ADDITIONAL_SENSE, 0); + return fill_from_dev_buffer(scp, arr, len); +} + +static int resp_start_stop(struct scsi_cmnd * scp, + struct sdebug_dev_info * devip) +{ + unsigned char *cmd = (unsigned char *)scp->cmnd; + int power_cond, errsts, start; + + if ((errsts = check_readiness(scp, 1, devip))) + return errsts; + power_cond = (cmd[4] & 0xf0) >> 4; + if (power_cond) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, + 0); + return check_condition_result; + } + start = cmd[4] & 1; + if (start == devip->stopped) + devip->stopped = !start; return 0; } -/* <> */ +#define SDEBUG_READCAP_ARR_SZ 8 +static int resp_readcap(struct scsi_cmnd * scp, + struct sdebug_dev_info * devip) +{ + unsigned char arr[SDEBUG_READCAP_ARR_SZ]; + unsigned int capac; + int errsts; + + 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; + memset(arr, 0, SDEBUG_READCAP_ARR_SZ); + if (sdebug_capacity < 0xffffffff) { + capac = (unsigned int)sdebug_capacity - 1; + arr[0] = (capac >> 24); + arr[1] = (capac >> 16) & 0xff; + arr[2] = (capac >> 8) & 0xff; + arr[3] = capac & 0xff; + } else { + arr[0] = 0xff; + arr[1] = 0xff; + arr[2] = 0xff; + arr[3] = 0xff; + } + arr[6] = (SECT_SIZE_PER(target) >> 8) & 0xff; + arr[7] = SECT_SIZE_PER(target) & 0xff; + return fill_from_dev_buffer(scp, arr, SDEBUG_READCAP_ARR_SZ); +} + +#define SDEBUG_READCAP16_ARR_SZ 32 +static int resp_readcap16(struct scsi_cmnd * scp, + struct sdebug_dev_info * devip) +{ + unsigned char *cmd = (unsigned char *)scp->cmnd; + unsigned char arr[SDEBUG_READCAP16_ARR_SZ]; + unsigned long long capac; + int errsts, k, alloc_len; + + if ((errsts = check_readiness(scp, 1, devip))) + return errsts; + 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; + 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; + return fill_from_dev_buffer(scp, arr, + min(alloc_len, SDEBUG_READCAP16_ARR_SZ)); +} + +/* <> */ static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) { /* Read-Write Error Recovery page for mode_sense */ - unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, + unsigned char err_recov_pg[] = {0x1, 0xa, 0xc0, 11, 240, 0, 0, 0, 5, 0, 0xff, 0xff}; memcpy(p, err_recov_pg, sizeof(err_recov_pg)); @@ -607,7 +1188,7 @@ static int resp_err_recov_pg(unsigned char * p, int pcontrol, int target) static int resp_disconnect_pg(unsigned char * p, int pcontrol, int target) { /* Disconnect-Reconnect page for mode_sense */ - unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, + unsigned char disconnect_pg[] = {0x2, 0xe, 128, 128, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; memcpy(p, disconnect_pg, sizeof(disconnect_pg)); @@ -636,7 +1217,7 @@ static int resp_format_pg(unsigned char * p, int pcontrol, int target) static int resp_caching_pg(unsigned char * p, int pcontrol, int target) { /* Caching page for mode_sense */ - unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, + unsigned char caching_pg[] = {0x8, 18, 0x14, 0, 0xff, 0xff, 0, 0, 0xff, 0xff, 0xff, 0xff, 0x80, 0x14, 0, 0, 0, 0, 0, 0}; memcpy(p, caching_pg, sizeof(caching_pg)); @@ -647,59 +1228,127 @@ static int resp_caching_pg(unsigned char * p, int pcontrol, int target) static int resp_ctrl_m_pg(unsigned char * p, int pcontrol, int target) { /* Control mode page for mode_sense */ - unsigned char ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, + unsigned char ch_ctrl_m_pg[] = {/* 0xa, 10, */ 0x6, 0, 0, 0, 0, 0, + 0, 0, 0, 0}; + unsigned char d_ctrl_m_pg[] = {0xa, 10, 2, 0, 0, 0, 0, 0, 0, 0, 0x2, 0x4b}; + if (scsi_debug_dsense) + ctrl_m_pg[2] |= 0x4; + else + ctrl_m_pg[2] &= ~0x4; memcpy(p, ctrl_m_pg, sizeof(ctrl_m_pg)); if (1 == pcontrol) - memset(p + 2, 0, sizeof(ctrl_m_pg) - 2); + memcpy(p + 2, ch_ctrl_m_pg, sizeof(ch_ctrl_m_pg)); + else if (2 == pcontrol) + memcpy(p, d_ctrl_m_pg, sizeof(d_ctrl_m_pg)); return sizeof(ctrl_m_pg); } + static int resp_iec_m_pg(unsigned char * p, int pcontrol, int target) { /* Informational Exceptions control mode page for mode_sense */ - unsigned char iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, - 0, 0, 0x0, 0x0}; + unsigned char ch_iec_m_pg[] = {/* 0x1c, 0xa, */ 0x4, 0xf, 0, 0, 0, 0, + 0, 0, 0x0, 0x0}; + unsigned char d_iec_m_pg[] = {0x1c, 0xa, 0x08, 0, 0, 0, 0, 0, + 0, 0, 0x0, 0x0}; + memcpy(p, iec_m_pg, sizeof(iec_m_pg)); if (1 == pcontrol) - memset(p + 2, 0, sizeof(iec_m_pg) - 2); + memcpy(p + 2, ch_iec_m_pg, sizeof(ch_iec_m_pg)); + else if (2 == pcontrol) + memcpy(p, d_iec_m_pg, sizeof(d_iec_m_pg)); return sizeof(iec_m_pg); } +static int resp_sas_sf_m_pg(unsigned char * p, int pcontrol, int target) +{ /* SAS SSP mode page - short format for mode_sense */ + unsigned char sas_sf_m_pg[] = {0x19, 0x6, + 0x6, 0x0, 0x7, 0xd0, 0x0, 0x0}; + + memcpy(p, sas_sf_m_pg, sizeof(sas_sf_m_pg)); + if (1 == pcontrol) + memset(p + 2, 0, sizeof(sas_sf_m_pg) - 2); + return sizeof(sas_sf_m_pg); +} + + +static int resp_sas_pcd_m_spg(unsigned char * p, int pcontrol, int target, + int target_dev_id) +{ /* SAS phy control and discover mode page for mode_sense */ + unsigned char sas_pcd_m_pg[] = {0x59, 0x1, 0, 0x64, 0, 0x6, 0, 2, + 0, 0, 0, 0, 0x10, 0x9, 0x8, 0x0, + 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, + 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, + 0x2, 0, 0, 0, 0, 0, 0, 0, + 0x88, 0x99, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 1, 0, 0, 0x10, 0x9, 0x8, 0x0, + 0x52, 0x22, 0x22, 0x20, 0x0, 0x0, 0x0, 0x0, + 0x51, 0x11, 0x11, 0x10, 0x0, 0x0, 0x0, 0x1, + 0x3, 0, 0, 0, 0, 0, 0, 0, + 0x88, 0x99, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + }; + int port_a, port_b; + + port_a = target_dev_id + 1; + port_b = port_a + 1; + memcpy(p, sas_pcd_m_pg, sizeof(sas_pcd_m_pg)); + p[20] = (port_a >> 24); + p[21] = (port_a >> 16) & 0xff; + p[22] = (port_a >> 8) & 0xff; + p[23] = port_a & 0xff; + p[48 + 20] = (port_b >> 24); + p[48 + 21] = (port_b >> 16) & 0xff; + p[48 + 22] = (port_b >> 8) & 0xff; + p[48 + 23] = port_b & 0xff; + if (1 == pcontrol) + memset(p + 4, 0, sizeof(sas_pcd_m_pg) - 4); + return sizeof(sas_pcd_m_pg); +} + +static int resp_sas_sha_m_spg(unsigned char * p, int pcontrol) +{ /* SAS SSP shared protocol specific port mode subpage */ + unsigned char sas_sha_m_pg[] = {0x59, 0x2, 0, 0xc, 0, 0x6, 0x10, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + }; + + memcpy(p, sas_sha_m_pg, sizeof(sas_sha_m_pg)); + if (1 == pcontrol) + memset(p + 4, 0, sizeof(sas_sha_m_pg) - 4); + return sizeof(sas_sha_m_pg); +} + #define SDEBUG_MAX_MSENSE_SZ 256 -static int resp_mode_sense(unsigned char * cmd, int target, - unsigned char * buff, int bufflen, +static int resp_mode_sense(struct scsi_cmnd * scp, int target, struct sdebug_dev_info * devip) { unsigned char dbd; - int pcontrol, pcode; + int pcontrol, pcode, subpcode; unsigned char dev_spec; - int alloc_len, msense_6, offset, len; + int alloc_len, msense_6, offset, len, errsts, target_dev_id; unsigned char * ap; unsigned char arr[SDEBUG_MAX_MSENSE_SZ]; - int min_len = bufflen > SDEBUG_MAX_MSENSE_SZ ? - SDEBUG_MAX_MSENSE_SZ : bufflen; + unsigned char *cmd = (unsigned char *)scp->cmnd; - SCSI_LOG_LLQUEUE(3, printk("Mode sense ...(%p %d)\n", buff, bufflen)); + if ((errsts = check_readiness(scp, 1, devip))) + return errsts; dbd = cmd[1] & 0x8; pcontrol = (cmd[2] & 0xc0) >> 6; pcode = cmd[2] & 0x3f; + subpcode = cmd[3]; msense_6 = (MODE_SENSE == cmd[0]); alloc_len = msense_6 ? cmd[4] : ((cmd[7] << 8) | cmd[8]); - /* printk(KERN_INFO "msense: dbd=%d pcontrol=%d pcode=%d " - "msense_6=%d alloc_len=%d\n", dbd, pcontrol, pcode, " - "msense_6, alloc_len); */ - if (bufflen < alloc_len) - printk(KERN_INFO "scsi_debug: mode_sense: bufflen=%d " - "< alloc_length=%d\n", bufflen, alloc_len); - memset(buff, 0, bufflen); memset(arr, 0, SDEBUG_MAX_MSENSE_SZ); if (0x3 == pcontrol) { /* Saving values not supported */ mk_sense_buffer(devip, ILLEGAL_REQUEST, SAVING_PARAMS_UNSUP, - 0, 18); + 0); return check_condition_result; } + target_dev_id = ((devip->sdbg_host->shost->host_no + 1) * 2000) + + (devip->target * 1000) - 3; dev_spec = DEV_READONLY(target) ? 0x80 : 0x0; if (msense_6) { arr[2] = dev_spec; @@ -710,6 +1359,12 @@ static int resp_mode_sense(unsigned char * cmd, int target, } ap = arr + offset; + if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { + /* TODO: Control Extension page */ + mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, + 0); + return check_condition_result; + } switch (pcode) { case 0x1: /* Read-Write error recovery page, direct access */ len = resp_err_recov_pg(ap, pcontrol, target); @@ -731,161 +1386,369 @@ static int resp_mode_sense(unsigned char * cmd, int target, len = resp_ctrl_m_pg(ap, pcontrol, target); offset += len; break; + case 0x19: /* if spc==1 then sas phy, control+discover */ + if ((subpcode > 0x2) && (subpcode < 0xff)) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_CDB, 0); + return check_condition_result; + } + len = 0; + if ((0x0 == subpcode) || (0xff == subpcode)) + len += resp_sas_sf_m_pg(ap + len, pcontrol, target); + if ((0x1 == subpcode) || (0xff == subpcode)) + len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, + target_dev_id); + if ((0x2 == subpcode) || (0xff == subpcode)) + len += resp_sas_sha_m_spg(ap + len, pcontrol); + offset += len; + break; case 0x1c: /* Informational Exceptions Mode page, all devices */ len = resp_iec_m_pg(ap, pcontrol, target); offset += len; break; case 0x3f: /* Read all Mode pages */ - len = resp_err_recov_pg(ap, pcontrol, target); - len += resp_disconnect_pg(ap + len, pcontrol, target); - len += resp_format_pg(ap + len, pcontrol, target); - len += resp_caching_pg(ap + len, pcontrol, target); - len += resp_ctrl_m_pg(ap + len, pcontrol, target); - len += resp_iec_m_pg(ap + len, pcontrol, target); + if ((0 == subpcode) || (0xff == subpcode)) { + len = resp_err_recov_pg(ap, pcontrol, target); + len += resp_disconnect_pg(ap + len, pcontrol, target); + len += resp_format_pg(ap + len, pcontrol, target); + len += resp_caching_pg(ap + len, pcontrol, target); + len += resp_ctrl_m_pg(ap + len, pcontrol, target); + len += resp_sas_sf_m_pg(ap + len, pcontrol, target); + if (0xff == subpcode) { + len += resp_sas_pcd_m_spg(ap + len, pcontrol, + target, target_dev_id); + len += resp_sas_sha_m_spg(ap + len, pcontrol); + } + len += resp_iec_m_pg(ap + len, pcontrol, target); + } else { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_CDB, 0); + return check_condition_result; + } offset += len; break; default: mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, - 0, 18); + 0); return check_condition_result; } if (msense_6) arr[0] = offset - 1; else { - offset -= 2; - arr[0] = (offset >> 8) & 0xff; - arr[1] = offset & 0xff; + arr[0] = ((offset - 2) >> 8) & 0xff; + arr[1] = (offset - 2) & 0xff; } - memcpy(buff, arr, min_len); - return 0; + return fill_from_dev_buffer(scp, arr, min(alloc_len, offset)); } -static int resp_read(struct scsi_cmnd * SCpnt, int upper_blk, int block, - int num, struct sdebug_dev_info * devip) +#define SDEBUG_MAX_MSELECT_SZ 512 + +static int resp_mode_select(struct scsi_cmnd * scp, int mselect6, + struct sdebug_dev_info * devip) +{ + int pf, sp, ps, md_len, bd_len, off, spf, pg_len; + int param_len, res, errsts, mpage; + unsigned char arr[SDEBUG_MAX_MSELECT_SZ]; + unsigned char *cmd = (unsigned char *)scp->cmnd; + + if ((errsts = check_readiness(scp, 1, devip))) + return errsts; + memset(arr, 0, sizeof(arr)); + pf = cmd[1] & 0x10; + sp = cmd[1] & 0x1; + param_len = mselect6 ? cmd[4] : ((cmd[7] << 8) + cmd[8]); + if ((0 == pf) || sp || (param_len > SDEBUG_MAX_MSELECT_SZ)) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_CDB, 0); + return check_condition_result; + } + res = fetch_to_dev_buffer(scp, arr, param_len); + if (-1 == res) + return (DID_ERROR << 16); + else if ((res < param_len) && + (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)) + printk(KERN_INFO "scsi_debug: mode_select: cdb indicated=%d, " + " IO sent=%d bytes\n", param_len, res); + md_len = mselect6 ? (arr[0] + 1) : ((arr[0] << 8) + arr[1] + 2); + bd_len = mselect6 ? arr[3] : ((arr[6] << 8) + arr[7]); + if ((md_len > 2) || (0 != bd_len)) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_PARAM_LIST, 0); + return check_condition_result; + } + off = bd_len + (mselect6 ? 4 : 8); + mpage = arr[off] & 0x3f; + ps = !!(arr[off] & 0x80); + if (ps) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_PARAM_LIST, 0); + return check_condition_result; + } + spf = !!(arr[off] & 0x40); + pg_len = spf ? ((arr[off + 2] << 8) + arr[off + 3] + 4) : + (arr[off + 1] + 2); + if ((pg_len + off) > param_len) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + PARAMETER_LIST_LENGTH_ERR, 0); + return check_condition_result; + } + switch (mpage) { + case 0xa: /* Control Mode page */ + if (ctrl_m_pg[1] == arr[off + 1]) { + memcpy(ctrl_m_pg + 2, arr + off + 2, + sizeof(ctrl_m_pg) - 2); + scsi_debug_dsense = !!(ctrl_m_pg[2] & 0x4); + return 0; + } + break; + case 0x1c: /* Informational Exceptions Mode page */ + if (iec_m_pg[1] == arr[off + 1]) { + memcpy(iec_m_pg + 2, arr + off + 2, + sizeof(iec_m_pg) - 2); + return 0; + } + break; + default: + break; + } + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_PARAM_LIST, 0); + return check_condition_result; +} + +static int resp_temp_l_pg(unsigned char * arr) +{ + unsigned char temp_l_pg[] = {0x0, 0x0, 0x3, 0x2, 0x0, 38, + 0x0, 0x1, 0x3, 0x2, 0x0, 65, + }; + + memcpy(arr, temp_l_pg, sizeof(temp_l_pg)); + return sizeof(temp_l_pg); +} + +static int resp_ie_l_pg(unsigned char * arr) +{ + unsigned char ie_l_pg[] = {0x0, 0x0, 0x3, 0x3, 0x0, 0x0, 38, + }; + + memcpy(arr, ie_l_pg, sizeof(ie_l_pg)); + if (iec_m_pg[2] & 0x4) { /* TEST bit set */ + arr[4] = THRESHOLD_EXCEEDED; + arr[5] = 0xff; + } + return sizeof(ie_l_pg); +} + +#define SDEBUG_MAX_LSENSE_SZ 512 + +static int resp_log_sense(struct scsi_cmnd * scp, + struct sdebug_dev_info * devip) +{ + int ppc, sp, pcontrol, pcode, alloc_len, errsts, len, n; + unsigned char arr[SDEBUG_MAX_LSENSE_SZ]; + unsigned char *cmd = (unsigned char *)scp->cmnd; + + if ((errsts = check_readiness(scp, 1, devip))) + return errsts; + memset(arr, 0, sizeof(arr)); + ppc = cmd[1] & 0x2; + sp = cmd[1] & 0x1; + if (ppc || sp) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_CDB, 0); + return check_condition_result; + } + pcontrol = (cmd[2] & 0xc0) >> 6; + pcode = cmd[2] & 0x3f; + alloc_len = (cmd[7] << 8) + cmd[8]; + arr[0] = pcode; + switch (pcode) { + case 0x0: /* Supported log pages log page */ + n = 4; + arr[n++] = 0x0; /* this page */ + arr[n++] = 0xd; /* Temperature */ + arr[n++] = 0x2f; /* Informational exceptions */ + arr[3] = n - 4; + break; + case 0xd: /* Temperature log page */ + arr[3] = resp_temp_l_pg(arr + 4); + break; + case 0x2f: /* Informational exceptions log page */ + arr[3] = resp_ie_l_pg(arr + 4); + break; + default: + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_CDB, 0); + return check_condition_result; + } + len = min(((arr[2] << 8) + arr[3]) + 4, alloc_len); + return fill_from_dev_buffer(scp, arr, + 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) { - unsigned char *buff = (unsigned char *) SCpnt->request_buffer; - int nbytes, sgcount; - struct scatterlist *sgpnt = NULL; - int bufflen = SCpnt->request_bufflen; unsigned long iflags; + unsigned int block, from_bottom; + unsigned long long u; + int ret; - if (upper_blk || (block + num > sdebug_capacity)) { - mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, - 0, 18); + if (lba + num > sdebug_capacity) { + mk_sense_buffer(devip, 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); return check_condition_result; } if ((SCSI_DEBUG_OPT_MEDIUM_ERR & scsi_debug_opts) && - (block <= OPT_MEDIUM_ERR_ADDR) && - ((block + num) > OPT_MEDIUM_ERR_ADDR)) { - mk_sense_buffer(devip, MEDIUM_ERROR, UNRECOVERED_READ_ERR, - 0, 18); + (lba <= OPT_MEDIUM_ERR_ADDR) && + ((lba + num) > OPT_MEDIUM_ERR_ADDR)) { /* claim unrecoverable read error */ + 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; + 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; + } return check_condition_result; } read_lock_irqsave(&atomic_rw, iflags); - sgcount = 0; - nbytes = bufflen; - /* printk(KERN_INFO "scsi_debug_read: block=%d, tot_bufflen=%d\n", - block, bufflen); */ - if (SCpnt->use_sg) { - sgcount = 0; - sgpnt = (struct scatterlist *) buff; - buff = scatg2virt(&sgpnt[sgcount]); - bufflen = sgpnt[sgcount].length; - } - do { - memcpy(buff, fake_storep + (block * SECT_SIZE), bufflen); - nbytes -= bufflen; - if (SCpnt->use_sg) { - block += bufflen >> POW2_SECT_SIZE; - sgcount++; - if (nbytes) { - buff = scatg2virt(&sgpnt[sgcount]); - bufflen = sgpnt[sgcount].length; - } - } else if (nbytes > 0) - printk(KERN_WARNING "scsi_debug:resp_read: unexpected " - "nbytes=%d\n", nbytes); - } while (nbytes); + 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); + } read_unlock_irqrestore(&atomic_rw, iflags); - return 0; + return ret; } -static int resp_write(struct scsi_cmnd * SCpnt, int upper_blk, int block, - 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) { - unsigned char *buff = (unsigned char *) SCpnt->request_buffer; - int nbytes, sgcount; - struct scatterlist *sgpnt = NULL; - int bufflen = SCpnt->request_bufflen; unsigned long iflags; + unsigned int block, to_bottom; + unsigned long long u; + int res; - if (upper_blk || (block + num > sdebug_capacity)) { + if (lba + num > sdebug_capacity) { mk_sense_buffer(devip, ILLEGAL_REQUEST, ADDR_OUT_OF_RANGE, - 0, 18); + 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); return check_condition_result; } write_lock_irqsave(&atomic_rw, iflags); - sgcount = 0; - nbytes = bufflen; - if (SCpnt->use_sg) { - sgcount = 0; - sgpnt = (struct scatterlist *) buff; - buff = scatg2virt(&sgpnt[sgcount]); - bufflen = sgpnt[sgcount].length; - } - do { - memcpy(fake_storep + (block * SECT_SIZE), buff, bufflen); - - nbytes -= bufflen; - if (SCpnt->use_sg) { - block += bufflen >> POW2_SECT_SIZE; - sgcount++; - if (nbytes) { - buff = scatg2virt(&sgpnt[sgcount]); - bufflen = sgpnt[sgcount].length; - } - } else if (nbytes > 0) - printk(KERN_WARNING "scsi_debug:resp_write: " - "unexpected nbytes=%d\n", nbytes); - } while (nbytes); + 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); + } write_unlock_irqrestore(&atomic_rw, iflags); + if (-1 == res) + return (DID_ERROR << 16); + else if ((res < (num * SECT_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); return 0; } -static int resp_report_luns(unsigned char * cmd, unsigned char * buff, - int bufflen, struct sdebug_dev_info * devip) +#define SDEBUG_RLUN_ARR_SZ 256 + +static int resp_report_luns(struct scsi_cmnd * scp, + struct sdebug_dev_info * devip) { - unsigned int alloc_len; - int lun_cnt, i, upper; + unsigned int alloc_len; + int lun_cnt, i, upper, num, n, wlun, lun; + unsigned char *cmd = (unsigned char *)scp->cmnd; int select_report = (int)cmd[2]; struct scsi_lun *one_lun; + unsigned char arr[SDEBUG_RLUN_ARR_SZ]; + unsigned char * max_addr; alloc_len = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); - if ((alloc_len < 16) || (select_report > 2)) { + if ((alloc_len < 4) || (select_report > 2)) { mk_sense_buffer(devip, ILLEGAL_REQUEST, INVALID_FIELD_IN_CDB, - 0, 18); + 0); return check_condition_result; } - if (bufflen > 8) { /* can produce response with up to 16k luns - (lun 0 to lun 16383) */ - memset(buff, 0, bufflen); - lun_cnt = scsi_debug_max_luns; - buff[2] = ((sizeof(struct scsi_lun) * lun_cnt) >> 8) & 0xff; - buff[3] = (sizeof(struct scsi_lun) * lun_cnt) & 0xff; - lun_cnt = min((int)((bufflen - 8) / sizeof(struct scsi_lun)), - lun_cnt); - one_lun = (struct scsi_lun *) &buff[8]; - for (i = 0; i < lun_cnt; i++) { - upper = (i >> 8) & 0x3f; - if (upper) - one_lun[i].scsi_lun[0] = - (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); - one_lun[i].scsi_lun[1] = i & 0xff; - } + /* can produce response with up to 16k luns (lun 0 to lun 16383) */ + memset(arr, 0, SDEBUG_RLUN_ARR_SZ); + lun_cnt = scsi_debug_max_luns; + if (1 == select_report) + lun_cnt = 0; + else if (scsi_debug_no_lun_0 && (lun_cnt > 0)) + --lun_cnt; + wlun = (select_report > 0) ? 1 : 0; + num = lun_cnt + wlun; + arr[2] = ((sizeof(struct scsi_lun) * num) >> 8) & 0xff; + arr[3] = (sizeof(struct scsi_lun) * num) & 0xff; + n = min((int)((SDEBUG_RLUN_ARR_SZ - 8) / + sizeof(struct scsi_lun)), num); + if (n < num) { + wlun = 0; + lun_cnt = n; } - return 0; + one_lun = (struct scsi_lun *) &arr[8]; + max_addr = arr + SDEBUG_RLUN_ARR_SZ; + for (i = 0, lun = (scsi_debug_no_lun_0 ? 1 : 0); + ((i < lun_cnt) && ((unsigned char *)(one_lun + i) < max_addr)); + i++, lun++) { + upper = (lun >> 8) & 0x3f; + if (upper) + one_lun[i].scsi_lun[0] = + (upper | (SAM2_LUN_ADDRESS_METHOD << 6)); + one_lun[i].scsi_lun[1] = lun & 0xff; + } + if (wlun) { + one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff; + one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff; + i++; + } + alloc_len = (unsigned char *)(one_lun + i) - arr; + return fill_from_dev_buffer(scp, arr, + min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); } /* When timer goes off this function is called. */ @@ -926,7 +1789,7 @@ static int scsi_debug_slave_alloc(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", @@ -936,14 +1799,15 @@ static int scsi_debug_slave_configure(struct scsi_device * sdp) devip = devInfoReg(sdp); sdp->hostdata = devip; if (sdp->host->cmd_per_lun) - scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, + scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING, sdp->host->cmd_per_lun); + blk_queue_max_segment_size(sdp->request_queue, 256 * 1024); return 0; } static void scsi_debug_slave_destroy(struct scsi_device * sdp) { - struct sdebug_dev_info * devip = + struct sdebug_dev_info * devip = (struct sdebug_dev_info *)sdp->hostdata; if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) @@ -980,6 +1844,17 @@ static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) open_devip = devip; } } + if (NULL == open_devip) { /* try and make a new one */ + open_devip = kzalloc(sizeof(*open_devip),GFP_KERNEL); + 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; @@ -988,26 +1863,41 @@ static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev) open_devip->reset = 1; open_devip->used = 1; memset(open_devip->sense_buff, 0, SDEBUG_SENSE_LEN); - open_devip->sense_buff[0] = 0x70; + 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; } -static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, - int asc, int asq, int inbandLen) +static void mk_sense_buffer(struct sdebug_dev_info * devip, int key, + int asc, int asq) { unsigned char * sbuff; sbuff = devip->sense_buff; memset(sbuff, 0, SDEBUG_SENSE_LEN); - if (inbandLen > SDEBUG_SENSE_LEN) - inbandLen = SDEBUG_SENSE_LEN; - sbuff[0] = 0x70; - sbuff[2] = key; - sbuff[7] = (inbandLen > 7) ? (inbandLen - 8) : 0; - sbuff[12] = asc; - sbuff[13] = asq; + 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; + } + 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); } static int scsi_debug_abort(struct scsi_cmnd * SCpnt) @@ -1029,7 +1919,7 @@ static int scsi_debug_biosparam(struct scsi_device *sdev, printk(KERN_INFO "scsi_debug: biosparam\n"); buf = scsi_bios_ptable(bdev); if (buf) { - res = scsi_partsize(buf, capacity, + res = scsi_partsize(buf, capacity, &info[2], &info[0], &info[1]); kfree(buf); if (! res) @@ -1138,7 +2028,7 @@ static void stop_all_queued(void) } /* Initializes timers in queued array */ -static void init_all_queued(void) +static void __init init_all_queued(void) { unsigned long iflags; int k; @@ -1154,21 +2044,65 @@ static void init_all_queued(void) spin_unlock_irqrestore(&queued_arr_lock, iflags); } -static int schedule_resp(struct scsi_cmnd * cmnd, +static void __init sdebug_build_parts(unsigned char * ramp) +{ + struct partition * pp; + int starts[SDEBUG_MAX_PARTS + 2]; + int sectors_per_part, num_sectors, k; + int heads_by_sects, start_sec, end_sec; + + /* assume partition table already zeroed */ + if ((scsi_debug_num_parts < 1) || (sdebug_store_size < 1048576)) + return; + if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) { + scsi_debug_num_parts = SDEBUG_MAX_PARTS; + printk(KERN_WARNING "scsi_debug:build_parts: reducing " + "partitions to %d\n", SDEBUG_MAX_PARTS); + } + num_sectors = (int)sdebug_store_sectors; + sectors_per_part = (num_sectors - sdebug_sectors_per) + / scsi_debug_num_parts; + heads_by_sects = sdebug_heads * sdebug_sectors_per; + starts[0] = sdebug_sectors_per; + for (k = 1; k < scsi_debug_num_parts; ++k) + starts[k] = ((k * sectors_per_part) / heads_by_sects) + * heads_by_sects; + starts[scsi_debug_num_parts] = num_sectors; + starts[scsi_debug_num_parts + 1] = 0; + + ramp[510] = 0x55; /* magic partition markings */ + ramp[511] = 0xAA; + pp = (struct partition *)(ramp + 0x1be); + for (k = 0; starts[k + 1]; ++k, ++pp) { + start_sec = starts[k]; + end_sec = starts[k + 1] - 1; + pp->boot_ind = 0; + + pp->cyl = start_sec / heads_by_sects; + pp->head = (start_sec - (pp->cyl * heads_by_sects)) + / sdebug_sectors_per; + pp->sector = (start_sec % sdebug_sectors_per) + 1; + + pp->end_cyl = end_sec / heads_by_sects; + pp->end_head = (end_sec - (pp->end_cyl * heads_by_sects)) + / 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->sys_ind = 0x83; /* plain Linux partition */ + } +} + +static int schedule_resp(struct scsi_cmnd * cmnd, struct sdebug_dev_info * devip, done_funct_t done, int scsi_result, int delta_jiff) { - int k, num; - if ((SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) && cmnd) { - printk(KERN_INFO "scsi_debug: cmd "); - for (k = 0, num = cmnd->cmd_len; k < num; ++k) - printk("%02x ", (int)cmnd->cmnd[k]); - printk("\n"); if (scsi_result) { struct scsi_device * sdp = cmnd->device; - printk(KERN_INFO "scsi_debug: ... <%u %u %u %u> " + printk(KERN_INFO "scsi_debug: <%u %u %u %u> " "non-zero result=0x%x\n", sdp->host->host_no, sdp->channel, sdp->id, sdp->lun, scsi_result); } @@ -1176,7 +2110,7 @@ static int schedule_resp(struct scsi_cmnd * cmnd, if (cmnd && devip) { /* simulate autosense by this driver */ if (SAM_STAT_CHECK_CONDITION == (scsi_result & 0xff)) - memcpy(cmnd->sense_buffer, devip->sense_buff, + memcpy(cmnd->sense_buffer, devip->sense_buff, (SCSI_SENSE_BUFFERSIZE > SDEBUG_SENSE_LEN) ? SDEBUG_SENSE_LEN : SCSI_SENSE_BUFFERSIZE); } @@ -1217,40 +2151,47 @@ static int schedule_resp(struct scsi_cmnd * cmnd, } } -/* Set 'perm' (4th argument) to 0 to disable module_param's definition - * of sysfs parameters (which module_param doesn't yet support). - * Sysfs parameters defined explicitly below. - */ -module_param_named(num_tgts, scsi_debug_num_tgts, int, 0); -module_param_named(max_luns, scsi_debug_max_luns, int, 0); -module_param_named(scsi_level, scsi_debug_scsi_level, int, 0); -module_param_named(dev_size_mb, scsi_debug_dev_size_mb, int, 0); -module_param_named(opts, scsi_debug_opts, int, 0); /* perm=0644 */ -module_param_named(every_nth, scsi_debug_every_nth, int, 0); -module_param_named(delay, scsi_debug_delay, int, 0); /* perm=0644 */ -module_param_named(add_host, scsi_debug_add_host, int, 0); /* perm=0644 */ +module_param_named(add_host, scsi_debug_add_host, int, 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(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(max_luns, scsi_debug_max_luns, int, S_IRUGO | S_IWUSR); +module_param_named(no_lun_0, scsi_debug_no_lun_0, int, S_IRUGO | S_IWUSR); +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(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); +module_param_named(ptype, scsi_debug_ptype, int, S_IRUGO | S_IWUSR); +module_param_named(scsi_level, scsi_debug_scsi_level, int, S_IRUGO); +module_param_named(virtual_gb, scsi_debug_virtual_gb, int, S_IRUGO | S_IWUSR); MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert"); MODULE_DESCRIPTION("SCSI debug adapter driver"); MODULE_LICENSE("GPL"); +MODULE_VERSION(SCSI_DEBUG_VERSION); -MODULE_PARM_DESC(num_tgts, "number of SCSI targets per host to simulate"); -MODULE_PARM_DESC(max_luns, "number of SCSI LUNs per target to simulate"); -MODULE_PARM_DESC(scsi_level, "SCSI level to simulate"); -MODULE_PARM_DESC(dev_size_mb, "size in MB of ram shared by devs"); -MODULE_PARM_DESC(opts, "1->noise, 2->medium_error, 4->..."); -MODULE_PARM_DESC(every_nth, "timeout every nth command(def=100)"); -MODULE_PARM_DESC(delay, "# of jiffies to delay response(def=1)"); MODULE_PARM_DESC(add_host, "0..127 hosts allowed(def=1)"); +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(dsense, "use descriptor sense format(def=0 -> fixed)"); +MODULE_PARM_DESC(every_nth, "timeout every nth command(def=100)"); +MODULE_PARM_DESC(max_luns, "number of LUNs per target to simulate(def=1)"); +MODULE_PARM_DESC(no_lun_0, "no LU number 0 (def=0 -> have lun 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(opts, "1->noise, 2->medium_error, 4->... (def=0)"); +MODULE_PARM_DESC(ptype, "SCSI peripheral type(def=0[disk])"); +MODULE_PARM_DESC(scsi_level, "SCSI level to simulate(def=5[SPC-3])"); +MODULE_PARM_DESC(virtual_gb, "virtual gigabyte size (def=0 -> use dev_size_mb)"); static char sdebug_info[256]; static const char * scsi_debug_info(struct Scsi_Host * shp) { - sprintf(sdebug_info, "scsi_debug, %s, num_tgts=%d, " - "dev_size_mb=%d, opts=0x%x", scsi_debug_version_str, - scsi_debug_num_tgts, scsi_debug_dev_size_mb, + sprintf(sdebug_info, "scsi_debug, version %s [%s], " + "dev_size_mb=%d, opts=0x%x", SCSI_DEBUG_VERSION, + scsi_debug_version_date, scsi_debug_dev_size_mb, scsi_debug_opts); return sdebug_info; } @@ -1277,19 +2218,20 @@ static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **sta if (1 != sscanf(arr, "%d", &pos)) return -EINVAL; scsi_debug_opts = pos; - if (scsi_debug_every_nth > 0) + if (scsi_debug_every_nth != 0) scsi_debug_cmnd_count = 0; return length; } begin = 0; - pos = len = sprintf(buffer, "scsi_debug adapter driver, %s\n" + pos = len = sprintf(buffer, "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, " + "number of aborts=%d, device_reset=%d, bus_resets=%d, " "host_resets=%d\n", - scsi_debug_version_str, scsi_debug_num_tgts, + 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, @@ -1306,12 +2248,12 @@ static int scsi_debug_proc_info(struct Scsi_Host *host, char *buffer, char **sta return len; } -static ssize_t sdebug_delay_show(struct device_driver * ddp, char * buf) +static ssize_t sdebug_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, +static ssize_t sdebug_delay_store(struct device_driver * ddp, const char * buf, size_t count) { int delay; @@ -1325,15 +2267,15 @@ 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) +DRIVER_ATTR(delay, S_IRUGO | S_IWUSR, sdebug_delay_show, + sdebug_delay_store); -static ssize_t sdebug_opts_show(struct device_driver * ddp, char * buf) +static ssize_t sdebug_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, +static ssize_t sdebug_opts_store(struct device_driver * ddp, const char * buf, size_t count) { int opts; @@ -1354,43 +2296,103 @@ opts_done: scsi_debug_cmnd_count = 0; return count; } -DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, - sdebug_opts_store) +DRIVER_ATTR(opts, S_IRUGO | S_IWUSR, sdebug_opts_show, + sdebug_opts_store); + +static ssize_t sdebug_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) +{ + int n; + + if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { + scsi_debug_ptype = n; + return count; + } + return -EINVAL; +} +DRIVER_ATTR(ptype, S_IRUGO | S_IWUSR, sdebug_ptype_show, sdebug_ptype_store); + +static ssize_t sdebug_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) +{ + int n; + + if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { + scsi_debug_dsense = n; + return count; + } + return -EINVAL; +} +DRIVER_ATTR(dsense, S_IRUGO | S_IWUSR, sdebug_dsense_show, + sdebug_dsense_store); + +static ssize_t sdebug_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) +{ + int n; + + if ((count > 0) && (1 == sscanf(buf, "%d", &n)) && (n >= 0)) { + scsi_debug_no_lun_0 = n; + return count; + } + return -EINVAL; +} +DRIVER_ATTR(no_lun_0, S_IRUGO | S_IWUSR, sdebug_no_lun_0_show, + sdebug_no_lun_0_store); -static ssize_t sdebug_num_tgts_show(struct device_driver * ddp, char * buf) +static ssize_t sdebug_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, +static ssize_t sdebug_num_tgts_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_num_tgts = n; + sdebug_max_tgts_luns(); return count; } return -EINVAL; } -DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, - sdebug_num_tgts_store) +DRIVER_ATTR(num_tgts, S_IRUGO | S_IWUSR, sdebug_num_tgts_show, + sdebug_num_tgts_store); -static ssize_t sdebug_dev_size_mb_show(struct device_driver * ddp, char * buf) +static ssize_t sdebug_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) +DRIVER_ATTR(dev_size_mb, S_IRUGO, sdebug_dev_size_mb_show, NULL); -static ssize_t sdebug_every_nth_show(struct device_driver * ddp, char * buf) +static ssize_t sdebug_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 ssize_t sdebug_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, +static ssize_t sdebug_every_nth_store(struct device_driver * ddp, const char * buf, size_t count) { int nth; - if ((count > 0) && (1 == sscanf(buf, "%d", &nth)) && (nth >= 0)) { + if ((count > 0) && (1 == sscanf(buf, "%d", &nth))) { scsi_debug_every_nth = nth; scsi_debug_cmnd_count = 0; return count; @@ -1398,38 +2400,62 @@ 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) + sdebug_every_nth_store); -static ssize_t sdebug_max_luns_show(struct device_driver * ddp, char * buf) +static ssize_t sdebug_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, +static ssize_t sdebug_max_luns_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_max_luns = n; + sdebug_max_tgts_luns(); return count; } return -EINVAL; } -DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, - sdebug_max_luns_store) +DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, + sdebug_max_luns_store); -static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) +static ssize_t sdebug_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) +DRIVER_ATTR(scsi_level, S_IRUGO, sdebug_scsi_level_show, NULL); -static ssize_t sdebug_add_host_show(struct device_driver * ddp, char * buf) +static ssize_t sdebug_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) +{ + 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; + return count; + } + return -EINVAL; +} +DRIVER_ATTR(virtual_gb, S_IRUGO | S_IWUSR, sdebug_virtual_gb_show, + sdebug_virtual_gb_store); + +static ssize_t sdebug_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, +static ssize_t sdebug_add_host_store(struct device_driver * ddp, const char * buf, size_t count) { int delta_hosts; @@ -1459,55 +2485,72 @@ 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) + sdebug_add_host_store); -static void do_create_driverfs_files() +static int do_create_driverfs_files(void) { - driver_create_file(&sdebug_driverfs_driver, &driver_attr_delay); - driver_create_file(&sdebug_driverfs_driver, &driver_attr_opts); - driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); - driver_create_file(&sdebug_driverfs_driver, &driver_attr_dev_size_mb); - driver_create_file(&sdebug_driverfs_driver, &driver_attr_every_nth); - driver_create_file(&sdebug_driverfs_driver, &driver_attr_max_luns); - driver_create_file(&sdebug_driverfs_driver, &driver_attr_scsi_level); - driver_create_file(&sdebug_driverfs_driver, &driver_attr_add_host); + 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_max_luns); + ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); + ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_num_parts); + 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); + return ret; } -static void do_remove_driverfs_files() +static void do_remove_driverfs_files(void) { - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); 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_parts); + driver_remove_file(&sdebug_driverfs_driver, &driver_attr_num_tgts); driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_luns); 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_num_tgts); - driver_remove_file(&sdebug_driverfs_driver, &driver_attr_opts); driver_remove_file(&sdebug_driverfs_driver, &driver_attr_delay); + driver_remove_file(&sdebug_driverfs_driver, &driver_attr_add_host); } static int __init scsi_debug_init(void) { - unsigned long sz; + unsigned int sz; int host_to_add; int k; - - sdebug_store_size = (unsigned long)scsi_debug_dev_size_mb * 1048576; - sdebug_capacity = sdebug_store_size / SECT_SIZE; + int ret; + + 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; /* play around with geometry, don't waste too much on track 0 */ sdebug_heads = 8; sdebug_sectors_per = 32; - if (scsi_debug_dev_size_mb >= 16) + if (scsi_debug_dev_size_mb >= 16) sdebug_heads = 32; else if (scsi_debug_dev_size_mb >= 256) sdebug_heads = 64; - sdebug_cylinders_per = (unsigned long)sdebug_capacity / + sdebug_cylinders_per = (unsigned long)sdebug_capacity / (sdebug_sectors_per * sdebug_heads); - if (sdebug_cylinders_per >= 1024) { + if (sdebug_cylinders_per >= 1024) { /* other LLDs do this; implies >= 1GB ram disk ... */ sdebug_heads = 255; sdebug_sectors_per = 63; - sdebug_cylinders_per = (unsigned long)sdebug_capacity / + sdebug_cylinders_per = (unsigned long)sdebug_capacity / (sdebug_sectors_per * sdebug_heads); } @@ -1518,14 +2561,36 @@ static int __init scsi_debug_init(void) return -ENOMEM; } memset(fake_storep, 0, sz); + if (scsi_debug_num_parts > 0) + sdebug_build_parts(fake_storep); + + ret = device_register(&pseudo_primary); + if (ret < 0) { + printk(KERN_WARNING "scsi_debug: device_register error: %d\n", + ret); + goto free_vm; + } + ret = bus_register(&pseudo_lld_bus); + if (ret < 0) { + printk(KERN_WARNING "scsi_debug: bus_register error: %d\n", + ret); + goto dev_unreg; + } + ret = driver_register(&sdebug_driverfs_driver); + if (ret < 0) { + printk(KERN_WARNING "scsi_debug: driver_register error: %d\n", + 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(); - device_register(&pseudo_primary); - bus_register(&pseudo_lld_bus); - driver_register(&sdebug_driverfs_driver); - do_create_driverfs_files(); - sdebug_driver_template.proc_name = (char *)sdebug_proc_name; host_to_add = scsi_debug_add_host; @@ -1544,6 +2609,18 @@ static int __init scsi_debug_init(void) scsi_debug_add_host); } 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); +free_vm: + vfree(fake_storep); + + return ret; } static void __exit scsi_debug_exit(void) @@ -1564,7 +2641,7 @@ static void __exit scsi_debug_exit(void) device_initcall(scsi_debug_init); module_exit(scsi_debug_exit); -void pseudo_0_release(struct device * dev) +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"); @@ -1575,7 +2652,7 @@ static struct device pseudo_primary = { .release = pseudo_0_release, }; -static int pseudo_lld_bus_match(struct device *dev, +static int pseudo_lld_bus_match(struct device *dev, struct device_driver *dev_driver) { return 1; @@ -1584,6 +2661,8 @@ static int pseudo_lld_bus_match(struct device *dev, 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) @@ -1594,7 +2673,7 @@ static void sdebug_release_adapter(struct device * dev) kfree(sdbg_host); } -static int sdebug_add_adapter() +static int sdebug_add_adapter(void) { int k, devs_per_host; int error = 0; @@ -1602,7 +2681,7 @@ static int sdebug_add_adapter() struct sdebug_dev_info *sdbg_devinfo; struct list_head *lh, *lh_sf; - sdbg_host = kmalloc(sizeof(*sdbg_host),GFP_KERNEL); + sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL); if (NULL == sdbg_host) { printk(KERN_ERR "%s: out of memory at line %d\n", @@ -1610,19 +2689,17 @@ static int sdebug_add_adapter() return -ENOMEM; } - memset(sdbg_host, 0, sizeof(*sdbg_host)); INIT_LIST_HEAD(&sdbg_host->dev_info_list); devs_per_host = scsi_debug_num_tgts * scsi_debug_max_luns; for (k = 0; k < devs_per_host; k++) { - sdbg_devinfo = kmalloc(sizeof(*sdbg_devinfo),GFP_KERNEL); + sdbg_devinfo = kzalloc(sizeof(*sdbg_devinfo),GFP_KERNEL); if (NULL == sdbg_devinfo) { printk(KERN_ERR "%s: out of memory at line %d\n", __FUNCTION__, __LINE__); error = -ENOMEM; goto clean; } - memset(sdbg_devinfo, 0, sizeof(*sdbg_devinfo)); sdbg_devinfo->sdbg_host = sdbg_host; list_add_tail(&sdbg_devinfo->dev_list, &sdbg_host->dev_info_list); @@ -1657,7 +2734,7 @@ clean: return error; } -static void sdebug_remove_adapter() +static void sdebug_remove_adapter(void) { struct sdebug_host_info * sdbg_host = NULL; @@ -1697,7 +2774,7 @@ static int sdebug_driver_probe(struct device * dev) hpnt->max_id = scsi_debug_num_tgts + 1; else hpnt->max_id = scsi_debug_num_tgts; - hpnt->max_lun = scsi_debug_max_luns; + hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */ error = scsi_add_host(hpnt, &sdbg_host->dev); if (error) { @@ -1737,3 +2814,21 @@ static int sdebug_driver_remove(struct device * dev) scsi_host_put(sdbg_host->shost); return 0; } + +static void sdebug_max_tgts_luns(void) +{ + struct sdebug_host_info * sdbg_host; + struct Scsi_Host *hpnt; + + spin_lock(&sdebug_host_list_lock); + list_for_each_entry(sdbg_host, &sdebug_host_list, host_list) { + hpnt = sdbg_host->shost; + if ((hpnt->this_id >= 0) && + (scsi_debug_num_tgts > hpnt->this_id)) + hpnt->max_id = scsi_debug_num_tgts + 1; + else + hpnt->max_id = scsi_debug_num_tgts; + hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* scsi_debug_max_luns; */ + } + spin_unlock(&sdebug_host_list_lock); +}