From d635711daa98be86d4c7fd01499c34f566b54ccb Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Fri, 10 Jun 2016 05:30:17 -0300 Subject: Linux-libre 4.6.2-gnu --- drivers/s390/block/dasd_alias.c | 216 +++++++++--------------- drivers/s390/block/dasd_devmap.c | 10 +- drivers/s390/block/dasd_diag.c | 69 ++++---- drivers/s390/block/dasd_eckd.c | 347 +++++++++++++++++++-------------------- drivers/s390/block/dasd_eckd.h | 3 +- drivers/s390/block/dasd_fba.c | 28 ++-- drivers/s390/block/dasd_genhd.c | 4 +- drivers/s390/block/dasd_int.h | 11 +- drivers/s390/block/dasd_ioctl.c | 38 +---- drivers/s390/block/dasd_proc.c | 5 +- drivers/s390/block/dcssblk.c | 18 +- drivers/s390/block/scm_blk.c | 2 +- 12 files changed, 328 insertions(+), 423 deletions(-) (limited to 'drivers/s390/block') diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c index 286782c60..1e560188d 100644 --- a/drivers/s390/block/dasd_alias.c +++ b/drivers/s390/block/dasd_alias.c @@ -185,14 +185,12 @@ static void _free_lcu(struct alias_lcu *lcu) */ int dasd_alias_make_device_known_to_lcu(struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; unsigned long flags; struct alias_server *server, *newserver; struct alias_lcu *lcu, *newlcu; struct dasd_uid uid; - private = (struct dasd_eckd_private *) device->private; - device->discipline->get_uid(device, &uid); spin_lock_irqsave(&aliastree.lock, flags); server = _find_server(&uid); @@ -244,14 +242,13 @@ int dasd_alias_make_device_known_to_lcu(struct dasd_device *device) */ void dasd_alias_disconnect_device_from_lcu(struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; unsigned long flags; struct alias_lcu *lcu; struct alias_server *server; int was_pending; struct dasd_uid uid; - private = (struct dasd_eckd_private *) device->private; lcu = private->lcu; /* nothing to do if already disconnected */ if (!lcu) @@ -316,31 +313,21 @@ static int _add_device_to_lcu(struct alias_lcu *lcu, struct dasd_device *pos) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; struct alias_pav_group *group; struct dasd_uid uid; - unsigned long flags; - private = (struct dasd_eckd_private *) device->private; - - /* only lock if not already locked */ - if (device != pos) - spin_lock_irqsave_nested(get_ccwdev_lock(device->cdev), flags, - CDEV_NESTED_SECOND); + spin_lock(get_ccwdev_lock(device->cdev)); private->uid.type = lcu->uac->unit[private->uid.real_unit_addr].ua_type; private->uid.base_unit_addr = lcu->uac->unit[private->uid.real_unit_addr].base_ua; uid = private->uid; - - if (device != pos) - spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); - + spin_unlock(get_ccwdev_lock(device->cdev)); /* if we have no PAV anyway, we don't need to bother with PAV groups */ if (lcu->pav == NO_PAV) { list_move(&device->alias_list, &lcu->active_devices); return 0; } - group = _find_group(lcu, &uid); if (!group) { group = kzalloc(sizeof(*group), GFP_ATOMIC); @@ -370,10 +357,9 @@ static int _add_device_to_lcu(struct alias_lcu *lcu, static void _remove_device_from_lcu(struct alias_lcu *lcu, struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; struct alias_pav_group *group; - private = (struct dasd_eckd_private *) device->private; list_move(&device->alias_list, &lcu->inactive_devices); group = private->pavgroup; if (!group) @@ -487,13 +473,13 @@ static int _lcu_update(struct dasd_device *refdev, struct alias_lcu *lcu) list_for_each_entry_safe(device, tempdev, &pavgroup->baselist, alias_list) { list_move(&device->alias_list, &lcu->active_devices); - private = (struct dasd_eckd_private *) device->private; + private = device->private; private->pavgroup = NULL; } list_for_each_entry_safe(device, tempdev, &pavgroup->aliaslist, alias_list) { list_move(&device->alias_list, &lcu->active_devices); - private = (struct dasd_eckd_private *) device->private; + private = device->private; private->pavgroup = NULL; } list_del(&pavgroup->group); @@ -505,10 +491,7 @@ static int _lcu_update(struct dasd_device *refdev, struct alias_lcu *lcu) if (rc) return rc; - /* need to take cdev lock before lcu lock */ - spin_lock_irqsave_nested(get_ccwdev_lock(refdev->cdev), flags, - CDEV_NESTED_FIRST); - spin_lock(&lcu->lock); + spin_lock_irqsave(&lcu->lock, flags); lcu->pav = NO_PAV; for (i = 0; i < MAX_DEVICES_PER_LCU; ++i) { switch (lcu->uac->unit[i].ua_type) { @@ -527,8 +510,7 @@ static int _lcu_update(struct dasd_device *refdev, struct alias_lcu *lcu) alias_list) { _add_device_to_lcu(lcu, device, refdev); } - spin_unlock(&lcu->lock); - spin_unlock_irqrestore(get_ccwdev_lock(refdev->cdev), flags); + spin_unlock_irqrestore(&lcu->lock, flags); return 0; } @@ -608,18 +590,14 @@ static int _schedule_lcu_update(struct alias_lcu *lcu, int dasd_alias_add_device(struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; struct alias_lcu *lcu; unsigned long flags; int rc; - private = (struct dasd_eckd_private *) device->private; lcu = private->lcu; rc = 0; - - /* need to take cdev lock before lcu lock */ - spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); - spin_lock(&lcu->lock); + spin_lock_irqsave(&lcu->lock, flags); if (!(lcu->flags & UPDATE_PENDING)) { rc = _add_device_to_lcu(lcu, device, device); if (rc) @@ -629,27 +607,24 @@ int dasd_alias_add_device(struct dasd_device *device) list_move(&device->alias_list, &lcu->active_devices); _schedule_lcu_update(lcu, device); } - spin_unlock(&lcu->lock); - spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); + spin_unlock_irqrestore(&lcu->lock, flags); return rc; } int dasd_alias_update_add_device(struct dasd_device *device) { - struct dasd_eckd_private *private; - private = (struct dasd_eckd_private *) device->private; + struct dasd_eckd_private *private = device->private; + private->lcu->flags |= UPDATE_PENDING; return dasd_alias_add_device(device); } int dasd_alias_remove_device(struct dasd_device *device) { - struct dasd_eckd_private *private; - struct alias_lcu *lcu; + struct dasd_eckd_private *private = device->private; + struct alias_lcu *lcu = private->lcu; unsigned long flags; - private = (struct dasd_eckd_private *) device->private; - lcu = private->lcu; /* nothing to do if already removed */ if (!lcu) return 0; @@ -661,16 +636,12 @@ int dasd_alias_remove_device(struct dasd_device *device) struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *base_device) { - + struct dasd_eckd_private *alias_priv, *private = base_device->private; + struct alias_pav_group *group = private->pavgroup; + struct alias_lcu *lcu = private->lcu; struct dasd_device *alias_device; - struct alias_pav_group *group; - struct alias_lcu *lcu; - struct dasd_eckd_private *private, *alias_priv; unsigned long flags; - private = (struct dasd_eckd_private *) base_device->private; - group = private->pavgroup; - lcu = private->lcu; if (!group || !lcu) return NULL; if (lcu->pav == NO_PAV || @@ -706,7 +677,7 @@ struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *base_device) group->next = list_first_entry(&alias_device->alias_list, struct dasd_device, alias_list); spin_unlock_irqrestore(&lcu->lock, flags); - alias_priv = (struct dasd_eckd_private *) alias_device->private; + alias_priv = alias_device->private; if ((alias_priv->count < private->count) && !alias_device->stopped && !test_bit(DASD_FLAG_OFFLINE, &alias_device->flags)) return alias_device; @@ -754,30 +725,19 @@ static void _restart_all_base_devices_on_lcu(struct alias_lcu *lcu) struct alias_pav_group *pavgroup; struct dasd_device *device; struct dasd_eckd_private *private; - unsigned long flags; /* active and inactive list can contain alias as well as base devices */ list_for_each_entry(device, &lcu->active_devices, alias_list) { - private = (struct dasd_eckd_private *) device->private; - spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); - if (private->uid.type != UA_BASE_DEVICE) { - spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), - flags); + private = device->private; + if (private->uid.type != UA_BASE_DEVICE) continue; - } - spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); dasd_schedule_block_bh(device->block); dasd_schedule_device_bh(device); } list_for_each_entry(device, &lcu->inactive_devices, alias_list) { - private = (struct dasd_eckd_private *) device->private; - spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); - if (private->uid.type != UA_BASE_DEVICE) { - spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), - flags); + private = device->private; + if (private->uid.type != UA_BASE_DEVICE) continue; - } - spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); dasd_schedule_block_bh(device->block); dasd_schedule_device_bh(device); } @@ -812,7 +772,7 @@ static void flush_all_alias_devices_on_lcu(struct alias_lcu *lcu) spin_lock_irqsave(&lcu->lock, flags); list_for_each_entry_safe(device, temp, &lcu->active_devices, alias_list) { - private = (struct dasd_eckd_private *) device->private; + private = device->private; if (private->uid.type == UA_BASE_DEVICE) continue; list_move(&device->alias_list, &active); @@ -834,45 +794,39 @@ static void flush_all_alias_devices_on_lcu(struct alias_lcu *lcu) if (device == list_first_entry(&active, struct dasd_device, alias_list)) { list_move(&device->alias_list, &lcu->active_devices); - private = (struct dasd_eckd_private *) device->private; + private = device->private; private->pavgroup = NULL; } } spin_unlock_irqrestore(&lcu->lock, flags); } -static void __stop_device_on_lcu(struct dasd_device *device, - struct dasd_device *pos) -{ - /* If pos == device then device is already locked! */ - if (pos == device) { - dasd_device_set_stop_bits(pos, DASD_STOPPED_SU); - return; - } - spin_lock(get_ccwdev_lock(pos->cdev)); - dasd_device_set_stop_bits(pos, DASD_STOPPED_SU); - spin_unlock(get_ccwdev_lock(pos->cdev)); -} - -/* - * This function is called in interrupt context, so the - * cdev lock for device is already locked! - */ -static void _stop_all_devices_on_lcu(struct alias_lcu *lcu, - struct dasd_device *device) +static void _stop_all_devices_on_lcu(struct alias_lcu *lcu) { struct alias_pav_group *pavgroup; - struct dasd_device *pos; + struct dasd_device *device; - list_for_each_entry(pos, &lcu->active_devices, alias_list) - __stop_device_on_lcu(device, pos); - list_for_each_entry(pos, &lcu->inactive_devices, alias_list) - __stop_device_on_lcu(device, pos); + list_for_each_entry(device, &lcu->active_devices, alias_list) { + spin_lock(get_ccwdev_lock(device->cdev)); + dasd_device_set_stop_bits(device, DASD_STOPPED_SU); + spin_unlock(get_ccwdev_lock(device->cdev)); + } + list_for_each_entry(device, &lcu->inactive_devices, alias_list) { + spin_lock(get_ccwdev_lock(device->cdev)); + dasd_device_set_stop_bits(device, DASD_STOPPED_SU); + spin_unlock(get_ccwdev_lock(device->cdev)); + } list_for_each_entry(pavgroup, &lcu->grouplist, group) { - list_for_each_entry(pos, &pavgroup->baselist, alias_list) - __stop_device_on_lcu(device, pos); - list_for_each_entry(pos, &pavgroup->aliaslist, alias_list) - __stop_device_on_lcu(device, pos); + list_for_each_entry(device, &pavgroup->baselist, alias_list) { + spin_lock(get_ccwdev_lock(device->cdev)); + dasd_device_set_stop_bits(device, DASD_STOPPED_SU); + spin_unlock(get_ccwdev_lock(device->cdev)); + } + list_for_each_entry(device, &pavgroup->aliaslist, alias_list) { + spin_lock(get_ccwdev_lock(device->cdev)); + dasd_device_set_stop_bits(device, DASD_STOPPED_SU); + spin_unlock(get_ccwdev_lock(device->cdev)); + } } } @@ -880,32 +834,27 @@ static void _unstop_all_devices_on_lcu(struct alias_lcu *lcu) { struct alias_pav_group *pavgroup; struct dasd_device *device; - unsigned long flags; list_for_each_entry(device, &lcu->active_devices, alias_list) { - spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); + spin_lock(get_ccwdev_lock(device->cdev)); dasd_device_remove_stop_bits(device, DASD_STOPPED_SU); - spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); + spin_unlock(get_ccwdev_lock(device->cdev)); } - list_for_each_entry(device, &lcu->inactive_devices, alias_list) { - spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); + spin_lock(get_ccwdev_lock(device->cdev)); dasd_device_remove_stop_bits(device, DASD_STOPPED_SU); - spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); + spin_unlock(get_ccwdev_lock(device->cdev)); } - list_for_each_entry(pavgroup, &lcu->grouplist, group) { list_for_each_entry(device, &pavgroup->baselist, alias_list) { - spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); + spin_lock(get_ccwdev_lock(device->cdev)); dasd_device_remove_stop_bits(device, DASD_STOPPED_SU); - spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), - flags); + spin_unlock(get_ccwdev_lock(device->cdev)); } list_for_each_entry(device, &pavgroup->aliaslist, alias_list) { - spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); + spin_lock(get_ccwdev_lock(device->cdev)); dasd_device_remove_stop_bits(device, DASD_STOPPED_SU); - spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), - flags); + spin_unlock(get_ccwdev_lock(device->cdev)); } } } @@ -942,42 +891,22 @@ static void summary_unit_check_handling_work(struct work_struct *work) spin_unlock_irqrestore(&lcu->lock, flags); } -/* - * note: this will be called from int handler context (cdev locked) - */ -void dasd_alias_handle_summary_unit_check(struct dasd_device *device, - struct irb *irb) +void dasd_alias_handle_summary_unit_check(struct work_struct *work) { + struct dasd_device *device = container_of(work, struct dasd_device, + suc_work); + struct dasd_eckd_private *private = device->private; struct alias_lcu *lcu; - char reason; - struct dasd_eckd_private *private; - char *sense; - - private = (struct dasd_eckd_private *) device->private; - - sense = dasd_get_sense(irb); - if (sense) { - reason = sense[8]; - DBF_DEV_EVENT(DBF_NOTICE, device, "%s %x", - "eckd handle summary unit check: reason", reason); - } else { - DBF_DEV_EVENT(DBF_WARNING, device, "%s", - "eckd handle summary unit check:" - " no reason code available"); - return; - } + unsigned long flags; lcu = private->lcu; if (!lcu) { DBF_DEV_EVENT(DBF_WARNING, device, "%s", "device not ready to handle summary" " unit check (no lcu structure)"); - return; + goto out; } - spin_lock(&lcu->lock); - _stop_all_devices_on_lcu(lcu, device); - /* prepare for lcu_update */ - private->lcu->flags |= NEED_UAC_UPDATE | UPDATE_PENDING; + spin_lock_irqsave(&lcu->lock, flags); /* If this device is about to be removed just return and wait for * the next interrupt on a different device */ @@ -985,21 +914,26 @@ void dasd_alias_handle_summary_unit_check(struct dasd_device *device, DBF_DEV_EVENT(DBF_WARNING, device, "%s", "device is in offline processing," " don't do summary unit check handling"); - spin_unlock(&lcu->lock); - return; + goto out_unlock; } if (lcu->suc_data.device) { /* already scheduled or running */ DBF_DEV_EVENT(DBF_WARNING, device, "%s", "previous instance of summary unit check worker" " still pending"); - spin_unlock(&lcu->lock); - return ; + goto out_unlock; } - lcu->suc_data.reason = reason; + _stop_all_devices_on_lcu(lcu); + /* prepare for lcu_update */ + lcu->flags |= NEED_UAC_UPDATE | UPDATE_PENDING; + lcu->suc_data.reason = private->suc_reason; lcu->suc_data.device = device; dasd_get_device(device); - spin_unlock(&lcu->lock); if (!schedule_work(&lcu->suc_data.worker)) dasd_put_device(device); +out_unlock: + spin_unlock_irqrestore(&lcu->lock, flags); +out: + clear_bit(DASD_FLAG_SUC, &device->flags); + dasd_put_device(device); }; diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index 8286f7424..2f18f6109 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -214,8 +214,8 @@ dasd_feature_list(char *str, char **endp) else if (len == 8 && !strncmp(str, "failfast", 8)) features |= DASD_FEATURE_FAILFAST; else { - pr_warning("%*s is not a supported device option\n", - len, str); + pr_warn("%*s is not a supported device option\n", + len, str); rc = -EINVAL; } str += len; @@ -224,8 +224,7 @@ dasd_feature_list(char *str, char **endp) str++; } if (*str != ')') { - pr_warning("A closing parenthesis ')' is missing in the " - "dasd= parameter\n"); + pr_warn("A closing parenthesis ')' is missing in the dasd= parameter\n"); rc = -EINVAL; } else str++; @@ -348,8 +347,7 @@ dasd_parse_range( char *parsestring ) { return str + 1; if (*str == '\0') return str; - pr_warning("The dasd= parameter value %s has an invalid ending\n", - str); + pr_warn("The dasd= parameter value %s has an invalid ending\n", str); return ERR_PTR(-EINVAL); } diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index 277b5c8c8..5667146c6 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -104,12 +104,10 @@ static inline int mdsk_init_io(struct dasd_device *device, unsigned int blocksize, blocknum_t offset, blocknum_t *end_block) { - struct dasd_diag_private *private; - struct dasd_diag_init_io *iib; + struct dasd_diag_private *private = device->private; + struct dasd_diag_init_io *iib = &private->iib; int rc; - private = (struct dasd_diag_private *) device->private; - iib = &private->iib; memset(iib, 0, sizeof (struct dasd_diag_init_io)); iib->dev_nr = private->dev_id.devno; @@ -130,12 +128,10 @@ mdsk_init_io(struct dasd_device *device, unsigned int blocksize, static inline int mdsk_term_io(struct dasd_device * device) { - struct dasd_diag_private *private; - struct dasd_diag_init_io *iib; + struct dasd_diag_private *private = device->private; + struct dasd_diag_init_io *iib = &private->iib; int rc; - private = (struct dasd_diag_private *) device->private; - iib = &private->iib; memset(iib, 0, sizeof (struct dasd_diag_init_io)); iib->dev_nr = private->dev_id.devno; rc = dia250(iib, TERM_BIO); @@ -153,14 +149,13 @@ dasd_diag_erp(struct dasd_device *device) rc = mdsk_init_io(device, device->block->bp_block, 0, NULL); if (rc == 4) { if (!(test_and_set_bit(DASD_FLAG_DEVICE_RO, &device->flags))) - pr_warning("%s: The access mode of a DIAG device " - "changed to read-only\n", - dev_name(&device->cdev->dev)); + pr_warn("%s: The access mode of a DIAG device changed to read-only\n", + dev_name(&device->cdev->dev)); rc = 0; } if (rc) - pr_warning("%s: DIAG ERP failed with " - "rc=%d\n", dev_name(&device->cdev->dev), rc); + pr_warn("%s: DIAG ERP failed with rc=%d\n", + dev_name(&device->cdev->dev), rc); } /* Start a given request at the device. Return zero on success, non-zero @@ -180,8 +175,8 @@ dasd_start_diag(struct dasd_ccw_req * cqr) cqr->status = DASD_CQR_ERROR; return -EIO; } - private = (struct dasd_diag_private *) device->private; - dreq = (struct dasd_diag_req *) cqr->data; + private = device->private; + dreq = cqr->data; private->iob.dev_nr = private->dev_id.devno; private->iob.key = 0; @@ -320,18 +315,17 @@ static void dasd_ext_handler(struct ext_code ext_code, static int dasd_diag_check_device(struct dasd_device *device) { - struct dasd_block *block; - struct dasd_diag_private *private; + struct dasd_diag_private *private = device->private; struct dasd_diag_characteristics *rdc_data; - struct dasd_diag_bio bio; struct vtoc_cms_label *label; - blocknum_t end_block; + struct dasd_block *block; + struct dasd_diag_bio bio; unsigned int sb, bsize; + blocknum_t end_block; int rc; - private = (struct dasd_diag_private *) device->private; if (private == NULL) { - private = kzalloc(sizeof(struct dasd_diag_private),GFP_KERNEL); + private = kzalloc(sizeof(*private), GFP_KERNEL); if (private == NULL) { DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Allocating memory for private DASD data " @@ -339,7 +333,7 @@ dasd_diag_check_device(struct dasd_device *device) return -ENOMEM; } ccw_device_get_id(device->cdev, &private->dev_id); - device->private = (void *) private; + device->private = private; } block = dasd_alloc_block(); if (IS_ERR(block)) { @@ -353,7 +347,7 @@ dasd_diag_check_device(struct dasd_device *device) block->base = device; /* Read Device Characteristics */ - rdc_data = (void *) &(private->rdc_data); + rdc_data = &private->rdc_data; rdc_data->dev_nr = private->dev_id.devno; rdc_data->rdc_len = sizeof (struct dasd_diag_characteristics); @@ -377,9 +371,9 @@ dasd_diag_check_device(struct dasd_device *device) private->pt_block = 2; break; default: - pr_warning("%s: Device type %d is not supported " - "in DIAG mode\n", dev_name(&device->cdev->dev), - private->rdc_data.vdev_class); + pr_warn("%s: Device type %d is not supported in DIAG mode\n", + dev_name(&device->cdev->dev), + private->rdc_data.vdev_class); rc = -EOPNOTSUPP; goto out; } @@ -420,8 +414,8 @@ dasd_diag_check_device(struct dasd_device *device) private->iob.flaga = DASD_DIAG_FLAGA_DEFAULT; rc = dia250(&private->iob, RW_BIO); if (rc == 3) { - pr_warning("%s: A 64-bit DIAG call failed\n", - dev_name(&device->cdev->dev)); + pr_warn("%s: A 64-bit DIAG call failed\n", + dev_name(&device->cdev->dev)); rc = -EOPNOTSUPP; goto out_label; } @@ -430,9 +424,8 @@ dasd_diag_check_device(struct dasd_device *device) break; } if (bsize > PAGE_SIZE) { - pr_warning("%s: Accessing the DASD failed because of an " - "incorrect format (rc=%d)\n", - dev_name(&device->cdev->dev), rc); + pr_warn("%s: Accessing the DASD failed because of an incorrect format (rc=%d)\n", + dev_name(&device->cdev->dev), rc); rc = -EIO; goto out_label; } @@ -450,8 +443,8 @@ dasd_diag_check_device(struct dasd_device *device) block->s2b_shift++; rc = mdsk_init_io(device, block->bp_block, 0, NULL); if (rc && (rc != 4)) { - pr_warning("%s: DIAG initialization failed with rc=%d\n", - dev_name(&device->cdev->dev), rc); + pr_warn("%s: DIAG initialization failed with rc=%d\n", + dev_name(&device->cdev->dev), rc); rc = -EIO; } else { if (rc == 4) @@ -601,16 +594,14 @@ static int dasd_diag_fill_info(struct dasd_device * device, struct dasd_information2_t * info) { - struct dasd_diag_private *private; + struct dasd_diag_private *private = device->private; - private = (struct dasd_diag_private *) device->private; info->label_block = (unsigned int) private->pt_block; info->FBA_layout = 1; info->format = DASD_FORMAT_LDL; - info->characteristics_size = sizeof (struct dasd_diag_characteristics); - memcpy(info->characteristics, - &((struct dasd_diag_private *) device->private)->rdc_data, - sizeof (struct dasd_diag_characteristics)); + info->characteristics_size = sizeof(private->rdc_data); + memcpy(info->characteristics, &private->rdc_data, + sizeof(private->rdc_data)); info->confdata_size = 0; return 0; } diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 9083247f5..c1b4ae55e 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -212,10 +212,9 @@ check_XRC (struct ccw1 *de_ccw, struct DE_eckd_data *data, struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; int rc; - private = (struct dasd_eckd_private *) device->private; if (!private->rdc_data.facilities.XRC_supported) return 0; @@ -237,13 +236,11 @@ static int define_extent(struct ccw1 *ccw, struct DE_eckd_data *data, unsigned int trk, unsigned int totrk, int cmd, struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; u32 begcyl, endcyl; u16 heads, beghead, endhead; int rc = 0; - private = (struct dasd_eckd_private *) device->private; - ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT; ccw->flags = 0; ccw->count = 16; @@ -322,10 +319,9 @@ define_extent(struct ccw1 *ccw, struct DE_eckd_data *data, unsigned int trk, static int check_XRC_on_prefix(struct PFX_eckd_data *pfxdata, struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; int rc; - private = (struct dasd_eckd_private *) device->private; if (!private->rdc_data.facilities.XRC_supported) return 0; @@ -346,12 +342,10 @@ static void fill_LRE_data(struct LRE_eckd_data *data, unsigned int trk, struct dasd_device *device, unsigned int reclen, unsigned int tlf) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; int sector; int dn, d; - private = (struct dasd_eckd_private *) device->private; - memset(data, 0, sizeof(*data)); sector = 0; if (rec_on_trk) { @@ -488,8 +482,8 @@ static int prefix_LRE(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata, u16 heads, beghead, endhead; int rc = 0; - basepriv = (struct dasd_eckd_private *) basedev->private; - startpriv = (struct dasd_eckd_private *) startdev->private; + basepriv = basedev->private; + startpriv = startdev->private; dedata = &pfxdata->define_extent; lredata = &pfxdata->locate_record; @@ -631,12 +625,10 @@ locate_record(struct ccw1 *ccw, struct LO_eckd_data *data, unsigned int trk, unsigned int rec_on_trk, int no_rec, int cmd, struct dasd_device * device, int reclen) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; int sector; int dn, d; - private = (struct dasd_eckd_private *) device->private; - DBF_DEV_EVENT(DBF_INFO, device, "Locate: trk %d, rec %d, no_rec %d, cmd %d, reclen %d", trk, rec_on_trk, no_rec, cmd, reclen); @@ -800,10 +792,9 @@ static void create_uid(struct dasd_eckd_private *private) */ static int dasd_eckd_generate_uid(struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; unsigned long flags; - private = (struct dasd_eckd_private *) device->private; if (!private) return -ENODEV; if (!private->ned || !private->gneq) @@ -816,11 +807,10 @@ static int dasd_eckd_generate_uid(struct dasd_device *device) static int dasd_eckd_get_uid(struct dasd_device *device, struct dasd_uid *uid) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; unsigned long flags; - if (device->private) { - private = (struct dasd_eckd_private *)device->private; + if (private) { spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); *uid = private->uid; spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); @@ -1034,10 +1024,9 @@ static unsigned char dasd_eckd_path_access(void *conf_data, int conf_len) static void dasd_eckd_clear_conf_data(struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; int i; - private = (struct dasd_eckd_private *) device->private; private->conf_data = NULL; private->conf_len = 0; for (i = 0; i < 8; i++) { @@ -1058,7 +1047,7 @@ static int dasd_eckd_read_conf(struct dasd_device *device) struct dasd_uid *uid; char print_path_uid[60], print_device_uid[60]; - private = (struct dasd_eckd_private *) device->private; + private = device->private; path_data = &device->path_data; opm = ccw_device_get_path_mask(device->cdev); conf_data_saved = 0; @@ -1191,11 +1180,10 @@ static int dasd_eckd_read_conf(struct dasd_device *device) static int verify_fcx_max_data(struct dasd_device *device, __u8 lpm) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; int mdc; u32 fcx_max_data; - private = (struct dasd_eckd_private *) device->private; if (private->fcx_max_data) { mdc = ccw_device_get_mdc(device->cdev, lpm); if ((mdc < 0)) { @@ -1221,15 +1209,10 @@ static int verify_fcx_max_data(struct dasd_device *device, __u8 lpm) static int rebuild_device_uid(struct dasd_device *device, struct path_verification_work_data *data) { - struct dasd_eckd_private *private; - struct dasd_path *path_data; - __u8 lpm, opm; - int rc; - - rc = -ENODEV; - private = (struct dasd_eckd_private *) device->private; - path_data = &device->path_data; - opm = device->path_data.opm; + struct dasd_eckd_private *private = device->private; + struct dasd_path *path_data = &device->path_data; + __u8 lpm, opm = path_data->opm; + int rc = -ENODEV; for (lpm = 0x80; lpm; lpm >>= 1) { if (!(lpm & opm)) @@ -1463,14 +1446,13 @@ static int dasd_eckd_verify_path(struct dasd_device *device, __u8 lpm) static int dasd_eckd_read_features(struct dasd_device *device) { + struct dasd_eckd_private *private = device->private; struct dasd_psf_prssd_data *prssdp; struct dasd_rssd_features *features; struct dasd_ccw_req *cqr; struct ccw1 *ccw; int rc; - struct dasd_eckd_private *private; - private = (struct dasd_eckd_private *) device->private; memset(&private->features, 0, sizeof(struct dasd_rssd_features)); cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1 /* PSF */ + 1 /* RSSD */, (sizeof(struct dasd_psf_prssd_data) + @@ -1605,11 +1587,9 @@ dasd_eckd_psf_ssc(struct dasd_device *device, int enable_pav, static int dasd_eckd_validate_server(struct dasd_device *device, unsigned long flags) { - int rc; - struct dasd_eckd_private *private; - int enable_pav; + struct dasd_eckd_private *private = device->private; + int enable_pav, rc; - private = (struct dasd_eckd_private *) device->private; if (private->uid.type == UA_BASE_PAV_ALIAS || private->uid.type == UA_HYPER_PAV_ALIAS) return 0; @@ -1662,14 +1642,13 @@ static void dasd_eckd_kick_validate_server(struct dasd_device *device) static u32 get_fcx_max_data(struct dasd_device *device) { - int tpm, mdc; + struct dasd_eckd_private *private = device->private; int fcx_in_css, fcx_in_gneq, fcx_in_features; - struct dasd_eckd_private *private; + int tpm, mdc; if (dasd_nofcx) return 0; /* is transport mode supported? */ - private = (struct dasd_eckd_private *) device->private; fcx_in_css = css_general_characteristics.fcx; fcx_in_gneq = private->gneq->reserved2[7] & 0x04; fcx_in_features = private->features.feature[40] & 0x80; @@ -1694,7 +1673,7 @@ static u32 get_fcx_max_data(struct dasd_device *device) static int dasd_eckd_check_characteristics(struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; struct dasd_block *block; struct dasd_uid temp_uid; int rc, i; @@ -1703,6 +1682,8 @@ dasd_eckd_check_characteristics(struct dasd_device *device) /* setup work queue for validate server*/ INIT_WORK(&device->kick_validate, dasd_eckd_do_validate_server); + /* setup work queue for summary unit check */ + INIT_WORK(&device->suc_work, dasd_alias_handle_summary_unit_check); if (!ccw_device_is_pathgroup(device->cdev)) { dev_warn(&device->cdev->dev, @@ -1713,7 +1694,6 @@ dasd_eckd_check_characteristics(struct dasd_device *device) dev_info(&device->cdev->dev, "The DASD is not operating in multipath mode\n"); } - private = (struct dasd_eckd_private *) device->private; if (!private) { private = kzalloc(sizeof(*private), GFP_KERNEL | GFP_DMA); if (!private) { @@ -1722,7 +1702,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device) "failed\n"); return -ENOMEM; } - device->private = (void *) private; + device->private = private; } else { memset(private, 0, sizeof(*private)); } @@ -1837,10 +1817,9 @@ out_err1: static void dasd_eckd_uncheck_device(struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; int i; - private = (struct dasd_eckd_private *) device->private; dasd_alias_disconnect_device_from_lcu(device); private->ned = NULL; private->sneq = NULL; @@ -1863,7 +1842,7 @@ static void dasd_eckd_uncheck_device(struct dasd_device *device) static struct dasd_ccw_req * dasd_eckd_analysis_ccw(struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; struct eckd_count *count_data; struct LO_eckd_data *LO_data; struct dasd_ccw_req *cqr; @@ -1871,8 +1850,6 @@ dasd_eckd_analysis_ccw(struct dasd_device *device) int cplength, datasize; int i; - private = (struct dasd_eckd_private *) device->private; - cplength = 8; datasize = sizeof(struct DE_eckd_data) + 2*sizeof(struct LO_eckd_data); cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, cplength, datasize, device); @@ -1946,11 +1923,9 @@ static int dasd_eckd_analysis_evaluation(struct dasd_ccw_req *init_cqr) static void dasd_eckd_analysis_callback(struct dasd_ccw_req *init_cqr, void *data) { - struct dasd_eckd_private *private; - struct dasd_device *device; + struct dasd_device *device = init_cqr->startdev; + struct dasd_eckd_private *private = device->private; - device = init_cqr->startdev; - private = (struct dasd_eckd_private *) device->private; private->init_cqr_status = dasd_eckd_analysis_evaluation(init_cqr); dasd_sfree_request(init_cqr, device); dasd_kick_device(device); @@ -1977,15 +1952,13 @@ static int dasd_eckd_start_analysis(struct dasd_block *block) static int dasd_eckd_end_analysis(struct dasd_block *block) { - struct dasd_device *device; - struct dasd_eckd_private *private; + struct dasd_device *device = block->base; + struct dasd_eckd_private *private = device->private; struct eckd_count *count_area; unsigned int sb, blk_per_trk; int status, i; struct dasd_ccw_req *init_cqr; - device = block->base; - private = (struct dasd_eckd_private *) device->private; status = private->init_cqr_status; private->init_cqr_status = -1; if (status == INIT_CQR_ERROR) { @@ -2083,9 +2056,8 @@ raw: static int dasd_eckd_do_analysis(struct dasd_block *block) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = block->base->private; - private = (struct dasd_eckd_private *) block->base->private; if (private->init_cqr_status < 0) return dasd_eckd_start_analysis(block); else @@ -2112,9 +2084,8 @@ static int dasd_eckd_basic_to_known(struct dasd_device *device) static int dasd_eckd_fill_geometry(struct dasd_block *block, struct hd_geometry *geo) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = block->base->private; - private = (struct dasd_eckd_private *) block->base->private; if (dasd_check_blocksize(block->bp_block) == 0) { geo->sectors = recs_per_track(&private->rdc_data, 0, block->bp_block); @@ -2151,8 +2122,8 @@ dasd_eckd_build_format(struct dasd_device *base, if (!startdev) startdev = base; - start_priv = (struct dasd_eckd_private *) startdev->private; - base_priv = (struct dasd_eckd_private *) base->private; + start_priv = startdev->private; + base_priv = base->private; rpt = recs_per_track(&base_priv->rdc_data, 0, fdata->blksize); @@ -2349,14 +2320,14 @@ dasd_eckd_build_format(struct dasd_device *base, * when formatting CDL */ if ((intensity & 0x08) && - fdata->start_unit == 0) { + address.cyl == 0 && address.head == 0) { if (i < 3) { ect->kl = 4; ect->dl = sizes_trk0[i] - 4; } } if ((intensity & 0x08) && - fdata->start_unit == 1) { + address.cyl == 0 && address.head == 1) { ect->kl = 44; ect->dl = LABEL_SIZE - 44; } @@ -2386,23 +2357,24 @@ dasd_eckd_build_format(struct dasd_device *base, return fcp; } -static int -dasd_eckd_format_device(struct dasd_device *base, - struct format_data_t *fdata, - int enable_pav) +/* + * Wrapper function to build a CCW request depending on input data + */ +static struct dasd_ccw_req * +dasd_eckd_format_build_ccw_req(struct dasd_device *base, + struct format_data_t *fdata, int enable_pav) { - struct dasd_ccw_req *cqr, *n; - struct dasd_block *block; - struct dasd_eckd_private *private; - struct list_head format_queue; - struct dasd_device *device; - int old_stop, format_step; - int step, rc = 0, sleep_rc; + return dasd_eckd_build_format(base, fdata, enable_pav); +} - block = base->block; - private = (struct dasd_eckd_private *) base->private; +/* + * Sanity checks on format_data + */ +static int dasd_eckd_format_sanity_checks(struct dasd_device *base, + struct format_data_t *fdata) +{ + struct dasd_eckd_private *private = base->private; - /* Sanity checks. */ if (fdata->start_unit >= (private->real_cyl * private->rdc_data.trk_per_cyl)) { dev_warn(&base->cdev->dev, @@ -2429,75 +2401,98 @@ dasd_eckd_format_device(struct dasd_device *base, fdata->blksize); return -EINVAL; } + return 0; +} + +/* + * This function will process format_data originally coming from an IOCTL + */ +static int dasd_eckd_format_process_data(struct dasd_device *base, + struct format_data_t *fdata, + int enable_pav) +{ + struct dasd_eckd_private *private = base->private; + struct dasd_ccw_req *cqr, *n; + struct list_head format_queue; + struct dasd_device *device; + int old_start, old_stop, format_step; + int step, retry; + int rc; + + rc = dasd_eckd_format_sanity_checks(base, fdata); + if (rc) + return rc; INIT_LIST_HEAD(&format_queue); + old_start = fdata->start_unit; old_stop = fdata->stop_unit; - while (fdata->start_unit <= 1) { - fdata->stop_unit = fdata->start_unit; - cqr = dasd_eckd_build_format(base, fdata, enable_pav); - list_add(&cqr->blocklist, &format_queue); - fdata->stop_unit = old_stop; - fdata->start_unit++; - - if (fdata->start_unit > fdata->stop_unit) - goto sleep; - } + format_step = DASD_CQR_MAX_CCW / recs_per_track(&private->rdc_data, 0, + fdata->blksize); + do { + retry = 0; + while (fdata->start_unit <= old_stop) { + step = fdata->stop_unit - fdata->start_unit + 1; + if (step > format_step) { + fdata->stop_unit = + fdata->start_unit + format_step - 1; + } -retry: - format_step = 255 / recs_per_track(&private->rdc_data, 0, - fdata->blksize); - while (fdata->start_unit <= old_stop) { - step = fdata->stop_unit - fdata->start_unit + 1; - if (step > format_step) - fdata->stop_unit = fdata->start_unit + format_step - 1; + cqr = dasd_eckd_format_build_ccw_req(base, fdata, + enable_pav); + if (IS_ERR(cqr)) { + rc = PTR_ERR(cqr); + if (rc == -ENOMEM) { + if (list_empty(&format_queue)) + goto out; + /* + * not enough memory available, start + * requests retry after first requests + * were finished + */ + retry = 1; + break; + } + goto out_err; + } + list_add_tail(&cqr->blocklist, &format_queue); - cqr = dasd_eckd_build_format(base, fdata, enable_pav); - if (IS_ERR(cqr)) { - if (PTR_ERR(cqr) == -ENOMEM) { - /* - * not enough memory available - * go to out and start requests - * retry after first requests were finished - */ - fdata->stop_unit = old_stop; - goto sleep; - } else - return PTR_ERR(cqr); + fdata->start_unit = fdata->stop_unit + 1; + fdata->stop_unit = old_stop; } - list_add(&cqr->blocklist, &format_queue); - fdata->start_unit = fdata->stop_unit + 1; - fdata->stop_unit = old_stop; - } + rc = dasd_sleep_on_queue(&format_queue); -sleep: - sleep_rc = dasd_sleep_on_queue(&format_queue); +out_err: + list_for_each_entry_safe(cqr, n, &format_queue, blocklist) { + device = cqr->startdev; + private = device->private; + if (cqr->status == DASD_CQR_FAILED) + rc = -EIO; + list_del_init(&cqr->blocklist); + dasd_sfree_request(cqr, device); + private->count--; + } - list_for_each_entry_safe(cqr, n, &format_queue, blocklist) { - device = cqr->startdev; - private = (struct dasd_eckd_private *) device->private; - if (cqr->status == DASD_CQR_FAILED) - rc = -EIO; - list_del_init(&cqr->blocklist); - dasd_sfree_request(cqr, device); - private->count--; - } + if (rc) + goto out; - if (sleep_rc) - return sleep_rc; + } while (retry); - /* - * in case of ENOMEM we need to retry after - * first requests are finished - */ - if (fdata->start_unit <= fdata->stop_unit) - goto retry; +out: + fdata->start_unit = old_start; + fdata->stop_unit = old_stop; return rc; } +static int dasd_eckd_format_device(struct dasd_device *base, + struct format_data_t *fdata, int enable_pav) +{ + return dasd_eckd_format_process_data(base, fdata, enable_pav); +} + static void dasd_eckd_handle_terminated_request(struct dasd_ccw_req *cqr) { if (cqr->retries < 0) { @@ -2543,9 +2538,8 @@ static void dasd_eckd_check_for_device_change(struct dasd_device *device, { char mask; char *sense = NULL; - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; - private = (struct dasd_eckd_private *) device->private; /* first of all check for state change pending interrupt */ mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP; if ((scsw_dstat(&irb->scsw) & mask) == mask) { @@ -2557,14 +2551,6 @@ static void dasd_eckd_check_for_device_change(struct dasd_device *device, device->state == DASD_STATE_ONLINE && !test_bit(DASD_FLAG_OFFLINE, &device->flags) && !test_bit(DASD_FLAG_SUSPENDED, &device->flags)) { - /* - * the state change could be caused by an alias - * reassignment remove device from alias handling - * to prevent new requests from being scheduled on - * the wrong alias device - */ - dasd_alias_remove_device(device); - /* schedule worker to reload device */ dasd_reload_device(device); } @@ -2579,7 +2565,27 @@ static void dasd_eckd_check_for_device_change(struct dasd_device *device, /* summary unit check */ if ((sense[27] & DASD_SENSE_BIT_0) && (sense[7] == 0x0D) && (scsw_dstat(&irb->scsw) & DEV_STAT_UNIT_CHECK)) { - dasd_alias_handle_summary_unit_check(device, irb); + if (test_and_set_bit(DASD_FLAG_SUC, &device->flags)) { + DBF_DEV_EVENT(DBF_WARNING, device, "%s", + "eckd suc: device already notified"); + return; + } + sense = dasd_get_sense(irb); + if (!sense) { + DBF_DEV_EVENT(DBF_WARNING, device, "%s", + "eckd suc: no reason code available"); + clear_bit(DASD_FLAG_SUC, &device->flags); + return; + + } + private->suc_reason = sense[8]; + DBF_DEV_EVENT(DBF_NOTICE, device, "%s %x", + "eckd handle summary unit check: reason", + private->suc_reason); + dasd_get_device(device); + if (!schedule_work(&device->suc_work)) + dasd_put_device(device); + return; } @@ -2634,7 +2640,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single( struct dasd_device *basedev; basedev = block->base; - private = (struct dasd_eckd_private *) basedev->private; + private = basedev->private; if (rq_data_dir(req) == READ) cmd = DASD_ECKD_CCW_READ_MT; else if (rq_data_dir(req) == WRITE) @@ -2990,8 +2996,8 @@ static int prepare_itcw(struct itcw *itcw, /* setup prefix data */ - basepriv = (struct dasd_eckd_private *) basedev->private; - startpriv = (struct dasd_eckd_private *) startdev->private; + basepriv = basedev->private; + startpriv = startdev->private; dedata = &pfxdata.define_extent; lredata = &pfxdata.locate_record; @@ -3278,7 +3284,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev, struct dasd_ccw_req *cqr; basedev = block->base; - private = (struct dasd_eckd_private *) basedev->private; + private = basedev->private; /* Calculate number of blocks/records per track. */ blksize = block->bp_block; @@ -3503,7 +3509,7 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req) if (!dasd_page_cache) goto out; - private = (struct dasd_eckd_private *) cqr->block->base->private; + private = cqr->block->base->private; blksize = cqr->block->bp_block; blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize); recid = blk_rq_pos(req) >> cqr->block->s2b_shift; @@ -3587,7 +3593,7 @@ static struct dasd_ccw_req *dasd_eckd_build_alias_cp(struct dasd_device *base, startdev = dasd_alias_get_start_dev(base); if (!startdev) startdev = base; - private = (struct dasd_eckd_private *) startdev->private; + private = startdev->private; if (private->count >= DASD_ECKD_CHANQ_MAX_SIZE) return ERR_PTR(-EBUSY); @@ -3610,7 +3616,7 @@ static int dasd_eckd_free_alias_cp(struct dasd_ccw_req *cqr, unsigned long flags; spin_lock_irqsave(get_ccwdev_lock(cqr->memdev->cdev), flags); - private = (struct dasd_eckd_private *) cqr->memdev->private; + private = cqr->memdev->private; private->count--; spin_unlock_irqrestore(get_ccwdev_lock(cqr->memdev->cdev), flags); return dasd_eckd_free_cp(cqr, req); @@ -3620,15 +3626,14 @@ static int dasd_eckd_fill_info(struct dasd_device * device, struct dasd_information2_t * info) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; - private = (struct dasd_eckd_private *) device->private; info->label_block = 2; info->FBA_layout = private->uses_cdl ? 0 : 1; info->format = private->uses_cdl ? DASD_FORMAT_CDL : DASD_FORMAT_LDL; - info->characteristics_size = sizeof(struct dasd_eckd_characteristics); + info->characteristics_size = sizeof(private->rdc_data); memcpy(info->characteristics, &private->rdc_data, - sizeof(struct dasd_eckd_characteristics)); + sizeof(private->rdc_data)); info->confdata_size = min((unsigned long)private->conf_len, sizeof(info->configuration_data)); memcpy(info->configuration_data, private->conf_data, @@ -3941,8 +3946,7 @@ dasd_eckd_performance(struct dasd_device *device, void __user *argp) static int dasd_eckd_get_attrib(struct dasd_device *device, void __user *argp) { - struct dasd_eckd_private *private = - (struct dasd_eckd_private *)device->private; + struct dasd_eckd_private *private = device->private; struct attrib_data_t attrib = private->attrib; int rc; @@ -3966,8 +3970,7 @@ dasd_eckd_get_attrib(struct dasd_device *device, void __user *argp) static int dasd_eckd_set_attrib(struct dasd_device *device, void __user *argp) { - struct dasd_eckd_private *private = - (struct dasd_eckd_private *)device->private; + struct dasd_eckd_private *private = device->private; struct attrib_data_t attrib; if (!capable(CAP_SYS_ADMIN)) @@ -4430,15 +4433,13 @@ static int dasd_eckd_pm_freeze(struct dasd_device *device) static int dasd_eckd_restore_device(struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; struct dasd_eckd_characteristics temp_rdc_data; int rc; struct dasd_uid temp_uid; unsigned long flags; unsigned long cqr_flags = 0; - private = (struct dasd_eckd_private *) device->private; - /* Read Configuration Data */ rc = dasd_eckd_read_conf(device); if (rc) { @@ -4502,13 +4503,17 @@ out_err: static int dasd_eckd_reload_device(struct dasd_device *device) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; int rc, old_base; char print_uid[60]; struct dasd_uid uid; unsigned long flags; - private = (struct dasd_eckd_private *) device->private; + /* + * remove device from alias handling to prevent new requests + * from being scheduled on the wrong alias device + */ + dasd_alias_remove_device(device); spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); old_base = private->uid.base_unit_addr; @@ -4556,12 +4561,10 @@ static int dasd_eckd_read_message_buffer(struct dasd_device *device, { struct dasd_rssd_messages *message_buf; struct dasd_psf_prssd_data *prssdp; - struct dasd_eckd_private *private; struct dasd_ccw_req *cqr; struct ccw1 *ccw; int rc; - private = (struct dasd_eckd_private *) device->private; cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1 /* PSF */ + 1 /* RSSD */, (sizeof(struct dasd_psf_prssd_data) + sizeof(struct dasd_rssd_messages)), @@ -4686,11 +4689,10 @@ static struct dasd_conf_data *dasd_eckd_get_ref_conf(struct dasd_device *device, __u8 lpum, struct dasd_cuir_message *cuir) { - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = device->private; struct dasd_conf_data *conf_data; int path, pos; - private = (struct dasd_eckd_private *) device->private; if (cuir->record_selector == 0) goto out; for (path = 0x80, pos = 0; path; path >>= 1, pos++) { @@ -4715,9 +4717,9 @@ out: static int dasd_eckd_cuir_scope(struct dasd_device *device, __u8 lpum, struct dasd_cuir_message *cuir) { + struct dasd_eckd_private *private = device->private; struct dasd_conf_data *ref_conf_data; unsigned long bitmask = 0, mask = 0; - struct dasd_eckd_private *private; struct dasd_conf_data *conf_data; unsigned int pos, path; char *ref_gneq, *gneq; @@ -4730,7 +4732,6 @@ static int dasd_eckd_cuir_scope(struct dasd_device *device, __u8 lpum, !(cuir->neq_map[0] | cuir->neq_map[1] | cuir->neq_map[2])) return lpum; - private = (struct dasd_eckd_private *) device->private; /* get reference conf data */ ref_conf_data = dasd_eckd_get_ref_conf(device, lpum, cuir); /* reference ned is determined by ned_map field */ @@ -4829,14 +4830,13 @@ static int dasd_eckd_cuir_quiesce(struct dasd_device *device, __u8 lpum, struct subchannel_id sch_id, struct dasd_cuir_message *cuir) { + struct dasd_eckd_private *private = device->private; struct alias_pav_group *pavgroup, *tempgroup; - struct dasd_eckd_private *private; struct dasd_device *dev, *n; unsigned long paths = 0; unsigned long flags; int tbcpm; - private = (struct dasd_eckd_private *) device->private; /* active devices */ list_for_each_entry_safe(dev, n, &private->lcu->active_devices, alias_list) { @@ -4892,13 +4892,12 @@ static int dasd_eckd_cuir_resume(struct dasd_device *device, __u8 lpum, struct subchannel_id sch_id, struct dasd_cuir_message *cuir) { + struct dasd_eckd_private *private = device->private; struct alias_pav_group *pavgroup, *tempgroup; - struct dasd_eckd_private *private; struct dasd_device *dev, *n; unsigned long paths = 0; int tbcpm; - private = (struct dasd_eckd_private *) device->private; /* * the path may have been added through a generic path event before * only trigger path verification if the path is not already in use diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h index f8f91ee65..6d9a6d351 100644 --- a/drivers/s390/block/dasd_eckd.h +++ b/drivers/s390/block/dasd_eckd.h @@ -525,6 +525,7 @@ struct dasd_eckd_private { int count; u32 fcx_max_data; + char suc_reason; }; @@ -534,7 +535,7 @@ void dasd_alias_disconnect_device_from_lcu(struct dasd_device *); int dasd_alias_add_device(struct dasd_device *); int dasd_alias_remove_device(struct dasd_device *); struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *); -void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *); +void dasd_alias_handle_summary_unit_check(struct work_struct *); void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *); void dasd_alias_lcu_setup_complete(struct dasd_device *); void dasd_alias_wait_for_lcu_setup(struct dasd_device *); diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c index c9262e789..d7b5b5503 100644 --- a/drivers/s390/block/dasd_fba.c +++ b/drivers/s390/block/dasd_fba.c @@ -125,13 +125,11 @@ locate_record(struct ccw1 * ccw, struct LO_fba_data *data, int rw, static int dasd_fba_check_characteristics(struct dasd_device *device) { - struct dasd_block *block; - struct dasd_fba_private *private; + struct dasd_fba_private *private = device->private; struct ccw_device *cdev = device->cdev; - int rc; - int readonly; + struct dasd_block *block; + int readonly, rc; - private = (struct dasd_fba_private *) device->private; if (!private) { private = kzalloc(sizeof(*private), GFP_KERNEL | GFP_DMA); if (!private) { @@ -140,7 +138,7 @@ dasd_fba_check_characteristics(struct dasd_device *device) "data failed\n"); return -ENOMEM; } - device->private = (void *) private; + device->private = private; } else { memset(private, 0, sizeof(*private)); } @@ -192,10 +190,9 @@ dasd_fba_check_characteristics(struct dasd_device *device) static int dasd_fba_do_analysis(struct dasd_block *block) { - struct dasd_fba_private *private; + struct dasd_fba_private *private = block->base->private; int sb, rc; - private = (struct dasd_fba_private *) block->base->private; rc = dasd_check_blocksize(private->rdc_data.blk_size); if (rc) { DBF_DEV_EVENT(DBF_WARNING, block->base, "unknown blocksize %d", @@ -254,7 +251,7 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev, struct dasd_block *block, struct request *req) { - struct dasd_fba_private *private; + struct dasd_fba_private *private = block->base->private; unsigned long *idaws; struct LO_fba_data *LO_data; struct dasd_ccw_req *cqr; @@ -267,7 +264,6 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev, unsigned int blksize, off; unsigned char cmd; - private = (struct dasd_fba_private *) block->base->private; if (rq_data_dir(req) == READ) { cmd = DASD_FBA_CCW_READ; } else if (rq_data_dir(req) == WRITE) { @@ -379,7 +375,7 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev, static int dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req) { - struct dasd_fba_private *private; + struct dasd_fba_private *private = cqr->block->base->private; struct ccw1 *ccw; struct req_iterator iter; struct bio_vec bv; @@ -389,7 +385,6 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req) if (!dasd_page_cache) goto out; - private = (struct dasd_fba_private *) cqr->block->base->private; blksize = cqr->block->bp_block; ccw = cqr->cpaddr; /* Skip over define extent & locate record. */ @@ -436,13 +431,14 @@ static int dasd_fba_fill_info(struct dasd_device * device, struct dasd_information2_t * info) { + struct dasd_fba_private *private = device->private; + info->label_block = 1; info->FBA_layout = 1; info->format = DASD_FORMAT_LDL; - info->characteristics_size = sizeof(struct dasd_fba_characteristics); - memcpy(info->characteristics, - &((struct dasd_fba_private *) device->private)->rdc_data, - sizeof (struct dasd_fba_characteristics)); + info->characteristics_size = sizeof(private->rdc_data); + memcpy(info->characteristics, &private->rdc_data, + sizeof(private->rdc_data)); info->confdata_size = 0; return 0; } diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c index ef1d9fb06..31d544a87 100644 --- a/drivers/s390/block/dasd_genhd.c +++ b/drivers/s390/block/dasd_genhd.c @@ -178,8 +178,8 @@ int dasd_gendisk_init(void) /* Register to static dasd major 94 */ rc = register_blkdev(DASD_MAJOR, "dasd"); if (rc != 0) { - pr_warning("Registering the device driver with major number " - "%d failed\n", DASD_MAJOR); + pr_warn("Registering the device driver with major number %d failed\n", + DASD_MAJOR); return rc; } return 0; diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 4aed5ed70..0f0add932 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -240,6 +240,13 @@ struct dasd_ccw_req { /* Signature for error recovery functions. */ typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *); +/* + * A single CQR can only contain a maximum of 255 CCWs. It is limited by + * the locate record and locate record extended count value which can only hold + * 1 Byte max. + */ +#define DASD_CQR_MAX_CCW 255 + /* * Unique identifier for dasd device. */ @@ -438,7 +445,7 @@ struct dasd_device { /* Device discipline stuff. */ struct dasd_discipline *discipline; struct dasd_discipline *base_discipline; - char *private; + void *private; struct dasd_path path_data; /* Device state and target state. */ @@ -463,6 +470,7 @@ struct dasd_device { struct work_struct restore_device; struct work_struct reload_device; struct work_struct kick_validate; + struct work_struct suc_work; struct timer_list timer; debug_info_t *debug_area; @@ -535,6 +543,7 @@ struct dasd_attention_data { #define DASD_FLAG_SAFE_OFFLINE_RUNNING 11 /* safe offline running */ #define DASD_FLAG_ABORTALL 12 /* Abort all noretry requests */ #define DASD_FLAG_PATH_VERIFY 13 /* Path verification worker running */ +#define DASD_FLAG_SUC 14 /* unhandled summary unit check */ #define DASD_SLEEPON_START_TAG ((void *) 1) #define DASD_SLEEPON_END_TAG ((void *) 2) diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c index 02837d0ad..90f30cc31 100644 --- a/drivers/s390/block/dasd_ioctl.c +++ b/drivers/s390/block/dasd_ioctl.c @@ -203,9 +203,7 @@ static int dasd_format(struct dasd_block *block, struct format_data_t *fdata) { struct dasd_device *base; - int enable_pav = 1; - int rc, retries; - int start, stop; + int rc; base = block->base; if (base->discipline->format_device == NULL) @@ -233,30 +231,11 @@ dasd_format(struct dasd_block *block, struct format_data_t *fdata) bdput(bdev); } - retries = 255; - /* backup start- and endtrack for retries */ - start = fdata->start_unit; - stop = fdata->stop_unit; - do { - rc = base->discipline->format_device(base, fdata, enable_pav); - if (rc) { - if (rc == -EAGAIN) { - retries--; - /* disable PAV in case of errors */ - enable_pav = 0; - fdata->start_unit = start; - fdata->stop_unit = stop; - } else - return rc; - } else - /* success */ - break; - } while (retries); - - if (!retries) - return -EIO; - else - return 0; + rc = base->discipline->format_device(base, fdata, 1); + if (rc == -EAGAIN) + rc = base->discipline->format_device(base, fdata, 0); + + return rc; } /* @@ -286,9 +265,8 @@ dasd_ioctl_format(struct block_device *bdev, void __user *argp) return -EFAULT; } if (bdev != bdev->bd_contains) { - pr_warning("%s: The specified DASD is a partition and cannot " - "be formatted\n", - dev_name(&base->cdev->dev)); + pr_warn("%s: The specified DASD is a partition and cannot be formatted\n", + dev_name(&base->cdev->dev)); dasd_put_device(base); return -EINVAL; } diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c index aa7bb2d1d..bad7a196b 100644 --- a/drivers/s390/block/dasd_proc.c +++ b/drivers/s390/block/dasd_proc.c @@ -322,13 +322,12 @@ static ssize_t dasd_stats_proc_write(struct file *file, return user_len; out_parse_error: rc = -EINVAL; - pr_warning("%s is not a supported value for /proc/dasd/statistics\n", - str); + pr_warn("%s is not a supported value for /proc/dasd/statistics\n", str); out_error: vfree(buffer); return rc; #else - pr_warning("/proc/dasd/statistics: is not activated in this kernel\n"); + pr_warn("/proc/dasd/statistics: is not activated in this kernel\n"); return user_len; #endif /* CONFIG_DASD_PROFILE */ } diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index ce7b70181..b83908670 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -738,15 +738,15 @@ dcssblk_remove_store(struct device *dev, struct device_attribute *attr, const ch dev_info = dcssblk_get_device_by_name(local_buf); if (dev_info == NULL) { up_write(&dcssblk_devices_sem); - pr_warning("Device %s cannot be removed because it is not a " - "known device\n", local_buf); + pr_warn("Device %s cannot be removed because it is not a known device\n", + local_buf); rc = -ENODEV; goto out_buf; } if (atomic_read(&dev_info->use_count) != 0) { up_write(&dcssblk_devices_sem); - pr_warning("Device %s cannot be removed while it is in " - "use\n", local_buf); + pr_warn("Device %s cannot be removed while it is in use\n", + local_buf); rc = -EBUSY; goto out_buf; } @@ -756,15 +756,16 @@ dcssblk_remove_store(struct device *dev, struct device_attribute *attr, const ch blk_cleanup_queue(dev_info->dcssblk_queue); dev_info->gd->queue = NULL; put_disk(dev_info->gd); - device_unregister(&dev_info->dev); /* unload all related segments */ list_for_each_entry(entry, &dev_info->seg_list, lh) segment_unload(entry->segment_name); - put_device(&dev_info->dev); up_write(&dcssblk_devices_sem); + device_unregister(&dev_info->dev); + put_device(&dev_info->dev); + rc = count; out_buf: kfree(local_buf); @@ -850,9 +851,8 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio) case SEG_TYPE_SC: /* cannot write to these segments */ if (bio_data_dir(bio) == WRITE) { - pr_warning("Writing to %s failed because it " - "is a read-only device\n", - dev_name(&dev_info->dev)); + pr_warn("Writing to %s failed because it is a read-only device\n", + dev_name(&dev_info->dev)); goto fail; } } diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c index 75d9896de..e6f54d3b8 100644 --- a/drivers/s390/block/scm_blk.c +++ b/drivers/s390/block/scm_blk.c @@ -303,7 +303,7 @@ static void scm_blk_request(struct request_queue *rq) if (req->cmd_type != REQ_TYPE_FS) { blk_start_request(req); blk_dump_rq_flags(req, KMSG_COMPONENT " bad request"); - blk_end_request_all(req, -EIO); + __blk_end_request_all(req, -EIO); continue; } -- cgit v1.2.3-54-g00ecf