X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fscsi%2Fscsi_debug.c;h=b02bdc6c2cd1f8beb26b4706e81d72e3860ad6d1;hb=9ab98f57b3e1d73cd0720d29c21b687ba609cde9;hp=3a5bfd10b2cbd4d419b2a84cb57deeed13c6ad32;hpb=44b56603c4c476b845a824cff6fe905c6268b2a1;p=pandora-kernel.git diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 3a5bfd10b2cb..b02bdc6c2cd1 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] @@ -58,8 +58,8 @@ #include "sd.h" #include "scsi_logging.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 @@ -108,6 +108,7 @@ static const char * scsi_debug_version_date = "20070104"; #define DEF_ATO 1 #define DEF_PHYSBLK_EXP 0 #define DEF_LOWEST_ALIGNED 0 +#define DEF_OPT_BLKS 64 #define DEF_UNMAP_MAX_BLOCKS 0 #define DEF_UNMAP_MAX_DESC 0 #define DEF_UNMAP_GRANULARITY 0 @@ -147,12 +148,18 @@ static const char * scsi_debug_version_date = "20070104"; #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_delay = DEF_DELAY; static int scsi_debug_dev_size_mb = DEF_DEV_SIZE_MB; static int scsi_debug_every_nth = DEF_EVERY_NTH; static int scsi_debug_max_luns = DEF_MAX_LUNS; +static int scsi_debug_max_queue = SCSI_DEBUG_CANQUEUE; static int scsi_debug_num_parts = DEF_NUM_PARTS; +static int scsi_debug_no_uld = 0; 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; @@ -169,6 +176,7 @@ static int scsi_debug_guard = DEF_GUARD; static int scsi_debug_ato = DEF_ATO; static int scsi_debug_physblk_exp = DEF_PHYSBLK_EXP; static int scsi_debug_lowest_aligned = DEF_LOWEST_ALIGNED; +static int scsi_debug_opt_blks = DEF_OPT_BLKS; static int scsi_debug_unmap_max_desc = DEF_UNMAP_MAX_DESC; static int scsi_debug_unmap_max_blocks = DEF_UNMAP_MAX_BLOCKS; static int scsi_debug_unmap_granularity = DEF_UNMAP_GRANULARITY; @@ -192,7 +200,6 @@ static int sdebug_sectors_per; /* sectors per cylinder */ #define SDEBUG_SENSE_LEN 32 -#define SCSI_DEBUG_CANQUEUE 255 #define SCSI_DEBUG_MAX_CMD_LEN 32 struct sdebug_dev_info { @@ -699,9 +706,13 @@ 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; @@ -709,6 +720,9 @@ static int inquiry_evpd_b0(unsigned char * arr) arr[7] = sdebug_store_sectors & 0xff; } + /* Optimal Transfer Length */ + put_unaligned_be32(scsi_debug_opt_blks, &arr[8]); + if (scsi_debug_unmap_max_desc) { unsigned int blocks; @@ -717,15 +731,20 @@ static int inquiry_evpd_b0(unsigned char * arr) else blocks = 0xffffffff; + /* Maximum Unmap LBA Count */ put_unaligned_be32(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 */ if (scsi_debug_unmap_granularity) { put_unaligned_be32(scsi_debug_unmap_granularity, &arr[24]); return 0x3c; /* Mandatory page length for thin provisioning */ @@ -1972,7 +1991,8 @@ static void map_region(sector_t lba, unsigned int len) block = lba + alignment; rem = do_div(block, granularity); - set_bit(block, map_storep); + if (block < map_size) + set_bit(block, map_storep); lba += granularity - rem; } @@ -1992,7 +2012,8 @@ static void unmap_region(sector_t lba, unsigned int len) block = lba + alignment; rem = do_div(block, granularity); - if (rem == 0 && lba + granularity <= end) + if (rem == 0 && lba + granularity <= end && + block < map_size) clear_bit(block, map_storep); lba += granularity - rem; @@ -2266,7 +2287,7 @@ 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; @@ -2380,6 +2401,8 @@ 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; } @@ -2406,7 +2429,7 @@ static int stop_queued_cmnd(struct scsi_cmnd *cmnd) 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]; if (sqcp->in_use && (cmnd == sqcp->a_cmnd)) { del_timer_sync(&sqcp->cmnd_timer); @@ -2416,7 +2439,7 @@ static int stop_queued_cmnd(struct scsi_cmnd *cmnd) } } spin_unlock_irqrestore(&queued_arr_lock, iflags); - return (k < SCSI_DEBUG_CANQUEUE) ? 1 : 0; + return (k < scsi_debug_max_queue) ? 1 : 0; } /* Deletes (stops) timers of all queued commands */ @@ -2427,7 +2450,7 @@ static void stop_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]; if (sqcp->in_use && sqcp->a_cmnd) { del_timer_sync(&sqcp->cmnd_timer); @@ -2533,7 +2556,7 @@ 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; @@ -2625,12 +2648,12 @@ 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 */ @@ -2662,7 +2685,9 @@ 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(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(opts, scsi_debug_opts, int, S_IRUGO | S_IWUSR); @@ -2677,6 +2702,7 @@ module_param_named(dif, scsi_debug_dif, int, S_IRUGO); module_param_named(guard, scsi_debug_guard, int, S_IRUGO); module_param_named(ato, scsi_debug_ato, int, S_IRUGO); module_param_named(physblk_exp, scsi_debug_physblk_exp, int, S_IRUGO); +module_param_named(opt_blks, scsi_debug_opt_blks, int, S_IRUGO); module_param_named(lowest_aligned, scsi_debug_lowest_aligned, 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); @@ -2695,7 +2721,9 @@ 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(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(opts, "1->noise, 2->medium_err, 4->timeout, 8->recovered_err... (def=0)"); @@ -2705,6 +2733,7 @@ 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(sector_size, "logical block size in bytes (def=512)"); MODULE_PARM_DESC(physblk_exp, "physical block exponent (def=0)"); +MODULE_PARM_DESC(opt_blks, "optimal transfer length in block (def=64)"); MODULE_PARM_DESC(lowest_aligned, "lowest aligned lba (def=0)"); MODULE_PARM_DESC(dix, "data integrity extensions mask (def=0)"); MODULE_PARM_DESC(dif, "data integrity field type: 0-3 (def=0)"); @@ -2970,6 +2999,31 @@ static ssize_t sdebug_max_luns_store(struct device_driver * ddp, DRIVER_ATTR(max_luns, S_IRUGO | S_IWUSR, sdebug_max_luns_show, sdebug_max_luns_store); +static ssize_t sdebug_max_queue_show(struct device_driver * ddp, char * buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_max_queue); +} +static ssize_t sdebug_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; +} +DRIVER_ATTR(max_queue, S_IRUGO | S_IWUSR, sdebug_max_queue_show, + sdebug_max_queue_store); + +static ssize_t sdebug_no_uld_show(struct device_driver * ddp, char * buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_no_uld); +} +DRIVER_ATTR(no_uld, S_IRUGO, sdebug_no_uld_show, NULL); + static ssize_t sdebug_scsi_level_show(struct device_driver * ddp, char * buf) { return scnprintf(buf, PAGE_SIZE, "%d\n", scsi_debug_scsi_level); @@ -3107,7 +3161,9 @@ static int do_create_driverfs_files(void) 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_max_queue); ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); + ret |= driver_create_file(&sdebug_driverfs_driver, &driver_attr_no_uld); 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); @@ -3139,7 +3195,9 @@ static void do_remove_driverfs_files(void) 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_uld); driver_remove_file(&sdebug_driverfs_driver, &driver_attr_no_lun_0); + driver_remove_file(&sdebug_driverfs_driver, &driver_attr_max_queue); 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); @@ -3830,12 +3888,13 @@ static int sdebug_driver_probe(struct device * dev) 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", __func__); - error = -ENODEV; + sdebug_driver_template.can_queue = scsi_debug_max_queue; + 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;