From d4538817287e56abc938900886301a5bdfafbfcd Mon Sep 17 00:00:00 2001 From: Christof Schmitt Date: Thu, 21 Aug 2008 13:43:32 +0200 Subject: [SCSI] zfcp: Fix request queue locking The request queue lock can be acquired from softirq context when the SCSI midlayer issues commands. Disable softirqs for this lock when commands are issued from zfcp. Signed-off-by: Christof Schmitt Signed-off-by: Martin Petermann Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_fsf.c | 56 +++++++++++++++++++++---------------------- drivers/s390/scsi/zfcp_qdio.c | 4 ++-- 2 files changed, 30 insertions(+), 30 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 19c1ca91387..aad33241a2e 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -710,10 +710,10 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) static int zfcp_fsf_sbal_check(struct zfcp_qdio_queue *queue) { - spin_lock(&queue->lock); + spin_lock_bh(&queue->lock); if (atomic_read(&queue->count)) return 1; - spin_unlock(&queue->lock); + spin_unlock_bh(&queue->lock); return 0; } @@ -722,13 +722,13 @@ static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) long ret; struct zfcp_qdio_queue *req_q = &adapter->req_q; - spin_unlock(&req_q->lock); + spin_unlock_bh(&req_q->lock); ret = wait_event_interruptible_timeout(adapter->request_wq, zfcp_fsf_sbal_check(req_q), 5 * HZ); if (ret > 0) return 0; - spin_lock(&req_q->lock); + spin_lock_bh(&req_q->lock); return -EIO; } @@ -870,7 +870,7 @@ int zfcp_fsf_status_read(struct zfcp_adapter *adapter) volatile struct qdio_buffer_element *sbale; int retval = -EIO; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -910,7 +910,7 @@ failed_buf: zfcp_fsf_req_free(req); zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); return retval; } @@ -1106,7 +1106,7 @@ int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, struct zfcp_fsf_req *req; int ret = -EIO; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1148,7 +1148,7 @@ failed_send: if (erp_action) erp_action->fsf_req = NULL; out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); return ret; } @@ -1263,7 +1263,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) struct zfcp_adapter *adapter = erp_action->adapter; int retval = -EIO; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (!atomic_read(&adapter->req_q.count)) goto out; req = zfcp_fsf_req_create(adapter, @@ -1295,7 +1295,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); return retval; } @@ -1306,7 +1306,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, struct zfcp_fsf_req *req = NULL; int retval = -EIO; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1334,7 +1334,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); if (!retval) wait_event(req->completion_wq, req->status & ZFCP_STATUS_FSFREQ_COMPLETED); @@ -1359,7 +1359,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) return -EOPNOTSUPP; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (!atomic_read(&adapter->req_q.count)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, @@ -1385,7 +1385,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); return retval; } @@ -1405,7 +1405,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) return -EOPNOTSUPP; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (!atomic_read(&adapter->req_q.count)) goto out; @@ -1427,7 +1427,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); if (!retval) wait_event(req->completion_wq, req->status & ZFCP_STATUS_FSFREQ_COMPLETED); @@ -1531,7 +1531,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1562,7 +1562,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); return retval; } @@ -1603,7 +1603,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1633,7 +1633,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); return retval; } @@ -1700,7 +1700,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1731,7 +1731,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); return retval; } @@ -1875,7 +1875,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1910,7 +1910,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); return retval; } @@ -1965,7 +1965,7 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, @@ -1995,7 +1995,7 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); return retval; } @@ -2417,7 +2417,7 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, return ERR_PTR(-EINVAL); } - spin_lock(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q.lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -2447,7 +2447,7 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); out: - spin_unlock(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q.lock); if (!retval) { wait_event(req->completion_wq, diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index d6dbd653fde..69d632d851d 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -423,9 +423,9 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) /* clear QDIOUP flag, thus do_QDIO is not called during qdio_shutdown */ req_q = &adapter->req_q; - spin_lock(&req_q->lock); + spin_lock_bh(&req_q->lock); atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status); - spin_unlock(&req_q->lock); + spin_unlock_bh(&req_q->lock); qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR); -- cgit v1.2.3 From 47f7bba52b01dd881fbd17b4b50c89ecf186eee2 Mon Sep 17 00:00:00 2001 From: Christof Schmitt Date: Thu, 21 Aug 2008 13:43:33 +0200 Subject: [SCSI] zfcp: Correctly query end flag in gpn_ft response When the last port entry in the gpn_ft response is already a known port, the eval function would skip the end flag and try to attach ports with wwpn 0. Fix this by checking the flag first. Signed-off-by: Christof Schmitt Signed-off-by: Martin Petermann Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_fc.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index e984469bb98..27edabe5b20 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -475,7 +475,7 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft) struct zfcp_adapter *adapter = ct->port->adapter; struct zfcp_port *port, *tmp; u32 d_id; - int ret = 0, x; + int ret = 0, x, last = 0; if (ct->status) return -EIO; @@ -492,12 +492,13 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft) down(&zfcp_data.config_sema); /* first entry is the header */ - for (x = 1; x < ZFCP_GPN_FT_MAX_ENTRIES; x++) { + for (x = 1; x < ZFCP_GPN_FT_MAX_ENTRIES && !last; x++) { if (x % (ZFCP_GPN_FT_ENTRIES + 1)) acc++; else acc = sg_virt(++sg); + last = acc->control & 0x80; d_id = acc->port_id[0] << 16 | acc->port_id[1] << 8 | acc->port_id[2]; @@ -513,8 +514,6 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft) ret = PTR_ERR(port); else zfcp_erp_port_reopen(port, 0, 149, NULL); - if (acc->control & 0x80) /* last entry */ - break; } zfcp_erp_wait(adapter); -- cgit v1.2.3 From f48bf7fb00f74d93105ba69522a3f6c9435d6af3 Mon Sep 17 00:00:00 2001 From: Christof Schmitt Date: Thu, 21 Aug 2008 13:43:34 +0200 Subject: [SCSI] zfcp: Simplify ccw notify handler The notify handler does not change the list of adapters, it only triggers erp actions to open or shutdown the adapter. We don't need to hold the config semaphore and wait for the erp to complete. This is a prerequisite for a fix in the s390 common i/o code. Signed-off-by: Christof Schmitt Signed-off-by: Martin Petermann Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_ccw.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c index 391dd29749f..51b6a05f4d1 100644 --- a/drivers/s390/scsi/zfcp_ccw.c +++ b/drivers/s390/scsi/zfcp_ccw.c @@ -152,10 +152,8 @@ static int zfcp_ccw_set_offline(struct ccw_device *ccw_device) */ static int zfcp_ccw_notify(struct ccw_device *ccw_device, int event) { - struct zfcp_adapter *adapter; + struct zfcp_adapter *adapter = dev_get_drvdata(&ccw_device->dev); - down(&zfcp_data.config_sema); - adapter = dev_get_drvdata(&ccw_device->dev); switch (event) { case CIO_GONE: dev_warn(&adapter->ccw_device->dev, "device gone\n"); @@ -174,8 +172,6 @@ static int zfcp_ccw_notify(struct ccw_device *ccw_device, int event) 89, NULL); break; } - zfcp_erp_wait(adapter); - up(&zfcp_data.config_sema); return 1; } -- cgit v1.2.3 From 9528539cc2d506aa232b0d93881ac4d19738752f Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Thu, 21 Aug 2008 13:43:35 +0200 Subject: [SCSI] zfcp: Fix reference counter for remote ports Fix the remote port reference counter handling during ELS ADISC commands and find the remote port by WWPN not by D_IDs that could change. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_fc.c | 25 +++++++++---------------- 1 file changed, 9 insertions(+), 16 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 27edabe5b20..05e6b09c48f 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -39,18 +39,6 @@ struct zfcp_gpn_ft { struct scatterlist sg_resp[ZFCP_GPN_FT_BUFFERS]; }; -static struct zfcp_port *zfcp_get_port_by_did(struct zfcp_adapter *adapter, - u32 d_id) -{ - struct zfcp_port *port; - - list_for_each_entry(port, &adapter->port_list_head, list) - if ((port->d_id == d_id) && - !atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status)) - return port; - return NULL; -} - static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, struct fcp_rscn_element *elem) { @@ -341,12 +329,13 @@ void zfcp_test_link(struct zfcp_port *port) zfcp_port_get(port); retval = zfcp_fc_adisc(port); - if (retval == 0 || retval == -EBUSY) + if (retval == 0) return; /* send of ADISC was not possible */ zfcp_port_put(port); - zfcp_erp_port_forced_reopen(port, 0, 65, NULL); + if (retval != -EBUSY) + zfcp_erp_port_forced_reopen(port, 0, 65, NULL); } static int zfcp_scan_get_nameserver(struct zfcp_adapter *adapter) @@ -503,9 +492,13 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft) acc->port_id[2]; /* skip the adapter's port and known remote ports */ - if (acc->wwpn == fc_host_port_name(adapter->scsi_host) || - zfcp_get_port_by_did(adapter, d_id)) + if (acc->wwpn == fc_host_port_name(adapter->scsi_host)) continue; + port = zfcp_get_port_by_wwpn(adapter, acc->wwpn); + if (port) { + zfcp_port_get(port); + continue; + } port = zfcp_port_enqueue(adapter, acc->wwpn, ZFCP_STATUS_PORT_DID_DID | -- cgit v1.2.3 From 6139308dca9437975125290698cb9306240f525c Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Thu, 21 Aug 2008 13:43:36 +0200 Subject: [SCSI] zfcp: channel cannot be detached due to refcount imbalance Due to an imbalance of the nameserver refcounting, channel devices couldn't be take offline anymore after the channel was activated. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_fc.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 05e6b09c48f..56196c98c07 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -352,7 +352,6 @@ static int zfcp_scan_get_nameserver(struct zfcp_adapter *adapter) if (ret) return ret; zfcp_erp_wait(adapter); - zfcp_port_put(adapter->nameserver_port); } return !atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->nameserver_port->status); -- cgit v1.2.3 From 025270f0eaa2def673747ed6f77cca41f694f354 Mon Sep 17 00:00:00 2001 From: Hirofumi Nakagawa Date: Thu, 21 Aug 2008 13:43:37 +0200 Subject: [SCSI] zfcp: Remove duplicated unlikely() macros. Some drivers have duplicated unlikely() macros. IS_ERR() already has unlikely() in itself. This patch cleans up such pointless codes although there is no real effect on the kernel's behaviour. Signed-off-by: Hirofumi Nakagawa Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_fsf.c | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index aad33241a2e..49dbeb754e5 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -877,7 +877,7 @@ int zfcp_fsf_status_read(struct zfcp_adapter *adapter) req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, ZFCP_REQ_NO_QTCB, adapter->pool.fsf_req_status_read); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -988,7 +988,7 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, req_flags, adapter->pool.fsf_req_abort); - if (unlikely(IS_ERR(req))) + if (IS_ERR(req)) goto out; if (unlikely(!(atomic_read(&unit->status) & @@ -1112,7 +1112,7 @@ int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, ZFCP_REQ_AUTO_CLEANUP, pool); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { ret = PTR_ERR(req); goto out; } @@ -1223,7 +1223,7 @@ int zfcp_fsf_send_els(struct zfcp_send_els *els) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, ZFCP_REQ_AUTO_CLEANUP, NULL); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { ret = PTR_ERR(req); goto out; } @@ -1270,7 +1270,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) FSF_QTCB_EXCHANGE_CONFIG_DATA, ZFCP_REQ_AUTO_CLEANUP, adapter->pool.fsf_req_erp); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -1312,7 +1312,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, 0, NULL); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -1365,7 +1365,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, ZFCP_REQ_AUTO_CLEANUP, adapter->pool.fsf_req_erp); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -1411,7 +1411,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, NULL); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -1539,7 +1539,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) FSF_QTCB_OPEN_PORT_WITH_DID, ZFCP_REQ_AUTO_CLEANUP, adapter->pool.fsf_req_erp); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -1610,7 +1610,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, ZFCP_REQ_AUTO_CLEANUP, adapter->pool.fsf_req_erp); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -1707,7 +1707,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, ZFCP_REQ_AUTO_CLEANUP, adapter->pool.fsf_req_erp); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -1882,7 +1882,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, ZFCP_REQ_AUTO_CLEANUP, adapter->pool.fsf_req_erp); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -1971,7 +1971,7 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, ZFCP_REQ_AUTO_CLEANUP, adapter->pool.fsf_req_erp); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -2228,7 +2228,7 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, adapter->pool.fsf_req_scsi); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = PTR_ERR(req); goto out; } @@ -2351,7 +2351,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, adapter->pool.fsf_req_scsi); - if (unlikely(IS_ERR(req))) + if (IS_ERR(req)) goto out; req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; @@ -2422,7 +2422,7 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, goto out; req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); - if (unlikely(IS_ERR(req))) { + if (IS_ERR(req)) { retval = -EPERM; goto out; } -- cgit v1.2.3 From 2450d3e7b8604d0abb042817f2502cb7ee0b782f Mon Sep 17 00:00:00 2001 From: Stefan Raspl Date: Wed, 1 Oct 2008 12:42:14 +0200 Subject: [SCSI] zfcp: add queue_full sysfs attribute Adds a new sysfs attribute queue_full for adapters that records the number of incidents where a requests could not be submitted due to insufficient free space on the request queue. Signed-off-by: Stefan Raspl Signed-off-by: Martin Peschke Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_def.h | 1 + drivers/s390/scsi/zfcp_fsf.c | 24 +++++++++++++++++------- drivers/s390/scsi/zfcp_qdio.c | 1 + drivers/s390/scsi/zfcp_sysfs.c | 13 +++++++++++++ 4 files changed, 32 insertions(+), 7 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 67f45fc62f5..74d7529621b 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -568,6 +568,7 @@ struct zfcp_adapter { struct fsf_qtcb_bottom_port *stats_reset_data; unsigned long stats_reset; struct work_struct scan_work; + atomic_t qdio_outb_full; /* queue full incidents */ }; struct zfcp_port { diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 49dbeb754e5..9e083a5e2c4 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -717,6 +717,14 @@ static int zfcp_fsf_sbal_check(struct zfcp_qdio_queue *queue) return 0; } +static int zfcp_fsf_sbal_available(struct zfcp_adapter *adapter) +{ + unsigned int count = atomic_read(&adapter->req_q.count); + if (!count) + atomic_inc(&adapter->qdio_outb_full); + return count > 0; +} + static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) { long ret; @@ -727,6 +735,8 @@ static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) zfcp_fsf_sbal_check(req_q), 5 * HZ); if (ret > 0) return 0; + if (!ret) + atomic_inc(&adapter->qdio_outb_full); spin_lock_bh(&req_q->lock); return -EIO; @@ -984,7 +994,7 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, struct zfcp_fsf_req *req = NULL; spin_lock(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, req_flags, adapter->pool.fsf_req_abort); @@ -1219,7 +1229,7 @@ int zfcp_fsf_send_els(struct zfcp_send_els *els) return -EBUSY; spin_lock(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, ZFCP_REQ_AUTO_CLEANUP, NULL); @@ -1264,7 +1274,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) int retval = -EIO; spin_lock_bh(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, @@ -1360,7 +1370,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) return -EOPNOTSUPP; spin_lock_bh(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, ZFCP_REQ_AUTO_CLEANUP, @@ -1406,7 +1416,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, return -EOPNOTSUPP; spin_lock_bh(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, @@ -2224,7 +2234,7 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, return -EBUSY; spin_lock(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, adapter->pool.fsf_req_scsi); @@ -2347,7 +2357,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, return NULL; spin_lock(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, adapter->pool.fsf_req_scsi); diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index 69d632d851d..cc49eaa9281 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -282,6 +282,7 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, addr += length, remaining -= length) { sbale = zfcp_qdio_sbale_next(fsf_req, sbtype); if (!sbale) { + atomic_inc(&fsf_req->adapter->qdio_outb_full); zfcp_qdio_undo_sbals(fsf_req); return -EINVAL; } diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index 2e85c6c49e7..7e857571fe4 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -487,10 +487,23 @@ ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", ZFCP_SHOST_ATTR(seconds_active, "%llu\n", (unsigned long long) stat_info.seconds_act); +static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *scsi_host = class_to_shost(dev); + struct zfcp_adapter *adapter = + (struct zfcp_adapter *) scsi_host->hostdata[0]; + + return sprintf(buf, "%d\n", atomic_read(&adapter->qdio_outb_full)); +} +static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); + struct device_attribute *zfcp_sysfs_shost_attrs[] = { &dev_attr_utilization, &dev_attr_requests, &dev_attr_megabytes, &dev_attr_seconds_active, + &dev_attr_queue_full, NULL }; -- cgit v1.2.3 From ff3b24fa5370a7ca618f212284d9b36fcedb9c0e Mon Sep 17 00:00:00 2001 From: Christof Schmitt Date: Wed, 1 Oct 2008 12:42:15 +0200 Subject: [SCSI] zfcp: Update message with input from review Update the kernel messages in zfcp with input from the message review and remove some messages that have been identified as redundant. Signed-off-by: Christof Schmitt Signed-off-by: Swen Schillig Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_aux.c | 8 +- drivers/s390/scsi/zfcp_ccw.c | 12 ++- drivers/s390/scsi/zfcp_dbf.c | 2 +- drivers/s390/scsi/zfcp_erp.c | 50 ++++----- drivers/s390/scsi/zfcp_fsf.c | 233 +++++++++++++++--------------------------- drivers/s390/scsi/zfcp_qdio.c | 26 ++--- drivers/s390/scsi/zfcp_scsi.c | 3 +- 7 files changed, 127 insertions(+), 207 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 90abfd06ed5..a8c965b6f74 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -100,8 +100,7 @@ static int __init zfcp_device_setup(char *devstr) err_out: kfree(str); - pr_err("zfcp: Parse error for device parameter string %s, " - "device not attached.\n", devstr); + pr_err("zfcp: %s is not a valid SCSI device\n", devstr); return 0; } @@ -193,13 +192,14 @@ static int __init zfcp_module_init(void) retval = misc_register(&zfcp_cfdc_misc); if (retval) { - pr_err("zfcp: registration of misc device zfcp_cfdc failed\n"); + pr_err("zfcp: Registering the misc device zfcp_cfdc failed\n"); goto out_misc; } retval = zfcp_ccw_register(); if (retval) { - pr_err("zfcp: Registration with common I/O layer failed.\n"); + pr_err("zfcp: The zfcp device driver could not register with " + "the common I/O layer\n"); goto out_ccw_register; } diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c index 51b6a05f4d1..ef8bdfbb55f 100644 --- a/drivers/s390/scsi/zfcp_ccw.c +++ b/drivers/s390/scsi/zfcp_ccw.c @@ -25,7 +25,8 @@ static int zfcp_ccw_probe(struct ccw_device *ccw_device) down(&zfcp_data.config_sema); if (zfcp_adapter_enqueue(ccw_device)) { dev_err(&ccw_device->dev, - "Setup of data structures failed.\n"); + "Setting up data structures for the " + "FCP adapter failed\n"); retval = -EINVAL; } up(&zfcp_data.config_sema); @@ -156,15 +157,18 @@ static int zfcp_ccw_notify(struct ccw_device *ccw_device, int event) switch (event) { case CIO_GONE: - dev_warn(&adapter->ccw_device->dev, "device gone\n"); + dev_warn(&adapter->ccw_device->dev, + "The FCP device has been detached\n"); zfcp_erp_adapter_shutdown(adapter, 0, 87, NULL); break; case CIO_NO_PATH: - dev_warn(&adapter->ccw_device->dev, "no path\n"); + dev_warn(&adapter->ccw_device->dev, + "The CHPID for the FCP device is offline\n"); zfcp_erp_adapter_shutdown(adapter, 0, 88, NULL); break; case CIO_OPER: - dev_info(&adapter->ccw_device->dev, "operational again\n"); + dev_info(&adapter->ccw_device->dev, + "The FCP device is operational again\n"); zfcp_erp_modify_adapter_status(adapter, 11, NULL, ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET); diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index fca48b88fc5..91b1a364a24 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -570,7 +570,7 @@ static const char *zfcp_rec_dbf_ids[] = { [125] = "need newer zfcp", [126] = "need newer microcode", [127] = "arbitrated loop not supported", - [128] = "unknown topology", + [128] = "", [129] = "qtcb size mismatch", [130] = "unknown fsf status ecd", [131] = "fcp request too big", diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 643ac4bba5b..4dd8fe70c41 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -901,11 +901,6 @@ static int zfcp_erp_open_ptp_port(struct zfcp_erp_action *act) struct zfcp_port *port = act->port; if (port->wwpn != adapter->peer_wwpn) { - dev_err(&adapter->ccw_device->dev, - "Failed to open port 0x%016Lx, " - "Peer WWPN 0x%016Lx does not " - "match.\n", port->wwpn, - adapter->peer_wwpn); zfcp_erp_port_failed(port, 25, NULL); return ZFCP_ERP_FAILED; } @@ -929,7 +924,8 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act) return zfcp_erp_open_ptp_port(act); if (!ns_port) { dev_err(&adapter->ccw_device->dev, - "Nameserver port unavailable.\n"); + "Attaching the name server port to the " + "FCP device failed\n"); return ZFCP_ERP_FAILED; } if (!(atomic_read(&ns_port->status) & @@ -1065,8 +1061,13 @@ static int zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result) break; case ZFCP_ERP_FAILED : atomic_inc(&unit->erp_counter); - if (atomic_read(&unit->erp_counter) > ZFCP_MAX_ERPS) + if (atomic_read(&unit->erp_counter) > ZFCP_MAX_ERPS) { + dev_err(&unit->port->adapter->ccw_device->dev, + "ERP failed for unit 0x%016Lx on " + "port 0x%016Lx\n", + unit->fcp_lun, unit->port->wwpn); zfcp_erp_unit_failed(unit, 21, NULL); + } break; } @@ -1091,8 +1092,12 @@ static int zfcp_erp_strategy_check_port(struct zfcp_port *port, int result) result = ZFCP_ERP_EXIT; } atomic_inc(&port->erp_counter); - if (atomic_read(&port->erp_counter) > ZFCP_MAX_ERPS) + if (atomic_read(&port->erp_counter) > ZFCP_MAX_ERPS) { + dev_err(&port->adapter->ccw_device->dev, + "ERP failed for remote port 0x%016Lx\n", + port->wwpn); zfcp_erp_port_failed(port, 22, NULL); + } break; } @@ -1114,8 +1119,12 @@ static int zfcp_erp_strategy_check_adapter(struct zfcp_adapter *adapter, case ZFCP_ERP_FAILED : atomic_inc(&adapter->erp_counter); - if (atomic_read(&adapter->erp_counter) > ZFCP_MAX_ERPS) + if (atomic_read(&adapter->erp_counter) > ZFCP_MAX_ERPS) { + dev_err(&adapter->ccw_device->dev, + "ERP cannot recover an error " + "on the FCP device\n"); zfcp_erp_adapter_failed(adapter, 23, NULL); + } break; } @@ -1263,8 +1272,7 @@ static void zfcp_erp_schedule_work(struct zfcp_unit *unit) p = kzalloc(sizeof(*p), GFP_KERNEL); if (!p) { dev_err(&unit->port->adapter->ccw_device->dev, - "Out of resources. Could not register unit " - "0x%016Lx on port 0x%016Lx with SCSI stack.\n", + "Registering unit 0x%016Lx on port 0x%016Lx failed\n", unit->fcp_lun, unit->port->wwpn); return; } @@ -1286,8 +1294,8 @@ static void zfcp_erp_rport_register(struct zfcp_port *port) port->rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids); if (!port->rport) { dev_err(&port->adapter->ccw_device->dev, - "Failed registration of rport " - "0x%016Lx.\n", port->wwpn); + "Registering port 0x%016Lx failed\n", + port->wwpn); return; } @@ -1484,7 +1492,7 @@ int zfcp_erp_thread_setup(struct zfcp_adapter *adapter) retval = kernel_thread(zfcp_erp_thread, adapter, SIGCHLD); if (retval < 0) { dev_err(&adapter->ccw_device->dev, - "Creation of ERP thread failed.\n"); + "Creating an ERP thread for the FCP device failed.\n"); return retval; } wait_event(adapter->erp_thread_wqh, @@ -1526,7 +1534,6 @@ void zfcp_erp_adapter_failed(struct zfcp_adapter *adapter, u8 id, void *ref) { zfcp_erp_modify_adapter_status(adapter, id, ref, ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET); - dev_err(&adapter->ccw_device->dev, "Adapter ERP failed.\n"); } /** @@ -1539,15 +1546,6 @@ void zfcp_erp_port_failed(struct zfcp_port *port, u8 id, void *ref) { zfcp_erp_modify_port_status(port, id, ref, ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET); - - if (atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA) - dev_err(&port->adapter->ccw_device->dev, - "Port ERP failed for WKA port d_id=0x%06x.\n", - port->d_id); - else - dev_err(&port->adapter->ccw_device->dev, - "Port ERP failed for port wwpn=0x%016Lx.\n", - port->wwpn); } /** @@ -1560,10 +1558,6 @@ void zfcp_erp_unit_failed(struct zfcp_unit *unit, u8 id, void *ref) { zfcp_erp_modify_unit_status(unit, id, ref, ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET); - - dev_err(&unit->port->adapter->ccw_device->dev, - "Unit ERP failed for unit 0x%016Lx on port 0x%016Lx.\n", - unit->fcp_lun, unit->port->wwpn); } /** diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 9e083a5e2c4..489a1896499 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -50,19 +50,16 @@ static u32 fsf_qtcb_type[] = { [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND }; -static const char *zfcp_act_subtable_type[] = { - "unknown", "OS", "WWPN", "DID", "LUN" -}; - static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) { u16 subtable = table >> 16; u16 rule = table & 0xffff; + const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" }; - if (subtable && subtable < ARRAY_SIZE(zfcp_act_subtable_type)) + if (subtable && subtable < ARRAY_SIZE(act_type)) dev_warn(&adapter->ccw_device->dev, - "Access denied in subtable %s, rule %d.\n", - zfcp_act_subtable_type[subtable], rule); + "Access denied according to ACT rule type %s, " + "rule %d\n", act_type[subtable], rule); } static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, @@ -70,7 +67,7 @@ static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, { struct fsf_qtcb_header *header = &req->qtcb->header; dev_warn(&req->adapter->ccw_device->dev, - "Access denied, cannot send command to port 0x%016Lx.\n", + "Access denied to port 0x%016Lx\n", port->wwpn); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); @@ -83,7 +80,7 @@ static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, { struct fsf_qtcb_header *header = &req->qtcb->header; dev_warn(&req->adapter->ccw_device->dev, - "Access denied for unit 0x%016Lx on port 0x%016Lx.\n", + "Access denied to unit 0x%016Lx on port 0x%016Lx\n", unit->fcp_lun, unit->port->wwpn); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); @@ -93,9 +90,8 @@ static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) { - dev_err(&req->adapter->ccw_device->dev, - "Required FC class not supported by adapter, " - "shutting down adapter.\n"); + dev_err(&req->adapter->ccw_device->dev, "FCP device not " + "operational because of an unsupported FC class\n"); zfcp_erp_adapter_shutdown(req->adapter, 0, 123, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; } @@ -171,42 +167,6 @@ static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) read_unlock_irqrestore(&zfcp_data.config_lock, flags); } -static void zfcp_fsf_bit_error_threshold(struct zfcp_fsf_req *req) -{ - struct zfcp_adapter *adapter = req->adapter; - struct fsf_status_read_buffer *sr_buf = req->data; - struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error; - - dev_warn(&adapter->ccw_device->dev, - "Warning: bit error threshold data " - "received for the adapter: " - "link failures = %i, loss of sync errors = %i, " - "loss of signal errors = %i, " - "primitive sequence errors = %i, " - "invalid transmission word errors = %i, " - "CRC errors = %i).\n", - err->link_failure_error_count, - err->loss_of_sync_error_count, - err->loss_of_signal_error_count, - err->primitive_sequence_error_count, - err->invalid_transmission_word_error_count, - err->crc_error_count); - dev_warn(&adapter->ccw_device->dev, - "Additional bit error threshold data of the adapter: " - "primitive sequence event time-outs = %i, " - "elastic buffer overrun errors = %i, " - "advertised receive buffer-to-buffer credit = %i, " - "current receice buffer-to-buffer credit = %i, " - "advertised transmit buffer-to-buffer credit = %i, " - "current transmit buffer-to-buffer credit = %i).\n", - err->primitive_sequence_event_timeout_count, - err->elastic_buffer_overrun_error_count, - err->advertised_receive_b2b_credit, - err->current_receive_b2b_credit, - err->advertised_transmit_b2b_credit, - err->current_transmit_b2b_credit); -} - static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id, struct fsf_link_down_info *link_down) { @@ -223,62 +183,66 @@ static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id, switch (link_down->error_code) { case FSF_PSQ_LINK_NO_LIGHT: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: no light detected.\n"); + "There is no light signal from the local " + "fibre channel cable\n"); break; case FSF_PSQ_LINK_WRAP_PLUG: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: wrap plug detected.\n"); + "There is a wrap plug instead of a fibre " + "channel cable\n"); break; case FSF_PSQ_LINK_NO_FCP: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "adjacent node on link does not support FCP.\n"); + "The adjacent fibre channel node does not " + "support FCP\n"); break; case FSF_PSQ_LINK_FIRMWARE_UPDATE: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "firmware update in progress.\n"); + "The FCP device is suspended because of a " + "firmware update\n"); break; case FSF_PSQ_LINK_INVALID_WWPN: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "duplicate or invalid WWPN detected.\n"); + "The FCP device detected a WWPN that is " + "duplicate or not valid\n"); break; case FSF_PSQ_LINK_NO_NPIV_SUPPORT: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "no support for NPIV by Fabric.\n"); + "The fibre channel fabric does not support NPIV\n"); break; case FSF_PSQ_LINK_NO_FCP_RESOURCES: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "out of resource in FCP daughtercard.\n"); + "The FCP adapter cannot support more NPIV ports\n"); break; case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "out of resource in Fabric.\n"); + "The adjacent switch cannot support " + "more NPIV ports\n"); break; case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "unable to login to Fabric.\n"); + "The FCP adapter could not log in to the " + "fibre channel fabric\n"); break; case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: dev_warn(&req->adapter->ccw_device->dev, - "WWPN assignment file corrupted on adapter.\n"); + "The WWPN assignment file on the FCP adapter " + "has been damaged\n"); break; case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: dev_warn(&req->adapter->ccw_device->dev, - "Mode table corrupted on adapter.\n"); + "The mode table on the FCP adapter " + "has been damaged\n"); break; case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: dev_warn(&req->adapter->ccw_device->dev, - "No WWPN for assignment table on adapter.\n"); + "All NPIV ports on the FCP adapter have " + "been assigned\n"); break; default: dev_warn(&req->adapter->ccw_device->dev, - "The local link to adapter is down.\n"); + "The link between the FCP adapter and " + "the FC fabric is down\n"); } out: zfcp_erp_adapter_failed(adapter, id, req); @@ -286,27 +250,18 @@ out: static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) { - struct zfcp_adapter *adapter = req->adapter; struct fsf_status_read_buffer *sr_buf = req->data; struct fsf_link_down_info *ldi = (struct fsf_link_down_info *) &sr_buf->payload; switch (sr_buf->status_subtype) { case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: - dev_warn(&adapter->ccw_device->dev, - "Physical link is down.\n"); zfcp_fsf_link_down_info_eval(req, 38, ldi); break; case FSF_STATUS_READ_SUB_FDISC_FAILED: - dev_warn(&adapter->ccw_device->dev, - "Local link is down " - "due to failed FDISC login.\n"); zfcp_fsf_link_down_info_eval(req, 39, ldi); break; case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: - dev_warn(&adapter->ccw_device->dev, - "Local link is down " - "due to firmware update on adapter.\n"); zfcp_fsf_link_down_info_eval(req, 40, NULL); }; } @@ -335,14 +290,16 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) case FSF_STATUS_READ_SENSE_DATA_AVAIL: break; case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: - zfcp_fsf_bit_error_threshold(req); + dev_warn(&adapter->ccw_device->dev, + "The error threshold for checksum statistics " + "has been exceeded\n"); break; case FSF_STATUS_READ_LINK_DOWN: zfcp_fsf_status_read_link_down(req); break; case FSF_STATUS_READ_LINK_UP: dev_info(&adapter->ccw_device->dev, - "Local link was replugged.\n"); + "The local link has been restored\n"); /* All ports should be marked as ready to run again */ zfcp_erp_modify_adapter_status(adapter, 30, NULL, ZFCP_STATUS_COMMON_RUNNING, @@ -386,8 +343,8 @@ static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) break; case FSF_SQ_NO_RECOM: dev_err(&req->adapter->ccw_device->dev, - "No recommendation could be given for a " - "problem on the adapter.\n"); + "The FCP adapter reported a problem " + "that cannot be recovered\n"); zfcp_erp_adapter_shutdown(req->adapter, 0, 121, req); break; } @@ -403,8 +360,7 @@ static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) switch (req->qtcb->header.fsf_status) { case FSF_UNKNOWN_COMMAND: dev_err(&req->adapter->ccw_device->dev, - "Command issued by the device driver (0x%x) is " - "not known by the adapter.\n", + "The FCP adapter does not recognize the command 0x%x\n", req->qtcb->header.fsf_command); zfcp_erp_adapter_shutdown(req->adapter, 0, 120, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; @@ -435,11 +391,9 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) return; case FSF_PROT_QTCB_VERSION_ERROR: dev_err(&adapter->ccw_device->dev, - "The QTCB version requested by zfcp (0x%x) is not " - "supported by the FCP adapter (lowest supported " - "0x%x, highest supported 0x%x).\n", - FSF_QTCB_CURRENT_VERSION, psq->word[0], - psq->word[1]); + "QTCB version 0x%x not supported by FCP adapter " + "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, + psq->word[0], psq->word[1]); zfcp_erp_adapter_shutdown(adapter, 0, 117, req); break; case FSF_PROT_ERROR_STATE: @@ -449,8 +403,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) break; case FSF_PROT_UNSUPP_QTCB_TYPE: dev_err(&adapter->ccw_device->dev, - "Packet header type used by the device driver is " - "incompatible with that used on the adapter.\n"); + "The QTCB type is not supported by the FCP adapter\n"); zfcp_erp_adapter_shutdown(adapter, 0, 118, req); break; case FSF_PROT_HOST_CONNECTION_INITIALIZING: @@ -459,7 +412,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) break; case FSF_PROT_DUPLICATE_REQUEST_ID: dev_err(&adapter->ccw_device->dev, - "The request identifier 0x%Lx is ambiguous.\n", + "0x%Lx is an ambiguous request identifier\n", (unsigned long long)qtcb->bottom.support.req_handle); zfcp_erp_adapter_shutdown(adapter, 0, 78, req); break; @@ -479,9 +432,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) break; default: dev_err(&adapter->ccw_device->dev, - "Transfer protocol status information" - "provided by the adapter (0x%x) " - "is not compatible with the device driver.\n", + "0x%x is not a valid transfer protocol status\n", qtcb->prefix.prot_status); zfcp_erp_adapter_shutdown(adapter, 0, 119, req); } @@ -559,33 +510,17 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) adapter->peer_wwpn = bottom->plogi_payload.wwpn; adapter->peer_wwnn = bottom->plogi_payload.wwnn; fc_host_port_type(shost) = FC_PORTTYPE_PTP; - if (req->erp_action) - dev_info(&adapter->ccw_device->dev, - "Point-to-Point fibrechannel " - "configuration detected.\n"); break; case FSF_TOPO_FABRIC: fc_host_port_type(shost) = FC_PORTTYPE_NPORT; - if (req->erp_action) - dev_info(&adapter->ccw_device->dev, - "Switched fabric fibrechannel " - "network detected.\n"); break; case FSF_TOPO_AL: fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; - dev_err(&adapter->ccw_device->dev, - "Unsupported arbitrated loop fibrechannel " - "topology detected, shutting down " - "adapter.\n"); - zfcp_erp_adapter_shutdown(adapter, 0, 127, req); - return -EIO; default: - fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; dev_err(&adapter->ccw_device->dev, - "The fibrechannel topology reported by the" - " adapter is not known by the zfcp driver," - " shutting down adapter.\n"); - zfcp_erp_adapter_shutdown(adapter, 0, 128, req); + "Unknown or unsupported arbitrated loop " + "fibre channel topology detected\n"); + zfcp_erp_adapter_shutdown(adapter, 0, 127, req); return -EIO; } @@ -616,11 +551,9 @@ static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { dev_err(&adapter->ccw_device->dev, - "Maximum QTCB size (%d bytes) allowed by " - "the adapter is lower than the minimum " - "required by the driver (%ld bytes).\n", - bottom->max_qtcb_size, - sizeof(struct fsf_qtcb)); + "FCP adapter maximum QTCB size (%d bytes) " + "is too small\n", + bottom->max_qtcb_size); zfcp_erp_adapter_shutdown(adapter, 0, 129, req); return; } @@ -656,15 +589,15 @@ static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { dev_err(&adapter->ccw_device->dev, - "The adapter only supports newer control block " - "versions, try updated device driver.\n"); + "The FCP adapter only supports newer " + "control block versions\n"); zfcp_erp_adapter_shutdown(adapter, 0, 125, req); return; } if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { dev_err(&adapter->ccw_device->dev, - "The adapter only supports older control block " - "versions, consider a microcode upgrade.\n"); + "The FCP adapter only supports older " + "control block versions\n"); zfcp_erp_adapter_shutdown(adapter, 0, 126, req); } } @@ -1463,9 +1396,8 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) break; case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: dev_warn(&req->adapter->ccw_device->dev, - "The adapter is out of resources. The remote port " - "0x%016Lx could not be opened, disabling it.\n", - port->wwpn); + "Not enough FCP adapter resources to open " + "remote port 0x%016Lx\n", port->wwpn); zfcp_erp_port_failed(port, 31, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; @@ -1477,8 +1409,8 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) break; case FSF_SQ_NO_RETRY_POSSIBLE: dev_warn(&req->adapter->ccw_device->dev, - "The remote port 0x%016Lx could not be " - "opened. Disabling it.\n", port->wwpn); + "Remote port 0x%016Lx could not be opened\n", + port->wwpn); zfcp_erp_port_failed(port, 32, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; @@ -1784,14 +1716,12 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) case FSF_LUN_SHARING_VIOLATION: if (header->fsf_status_qual.word[0]) dev_warn(&adapter->ccw_device->dev, - "FCP-LUN 0x%Lx at the remote port " - "with WWPN 0x%Lx " - "connected to the adapter " - "is already in use in LPAR%d, CSS%d.\n", + "LUN 0x%Lx on port 0x%Lx is already in " + "use by CSS%d, MIF Image ID %x\n", unit->fcp_lun, unit->port->wwpn, - queue_designator->hla, - queue_designator->cssid); + queue_designator->cssid, + queue_designator->hla); else zfcp_act_eval_err(adapter, header->fsf_status_qual.word[2]); @@ -1802,8 +1732,8 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) break; case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: dev_warn(&adapter->ccw_device->dev, - "The adapter ran out of resources. There is no " - "handle available for unit 0x%016Lx on port 0x%016Lx.", + "No handle is available for LUN " + "0x%016Lx on port 0x%016Lx\n", unit->fcp_lun, unit->port->wwpn); zfcp_erp_unit_failed(unit, 34, req); /* fall through */ @@ -1841,25 +1771,25 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); dev_info(&adapter->ccw_device->dev, - "Read-only access for unit 0x%016Lx " - "on port 0x%016Lx.\n", + "SCSI device at LUN 0x%016Lx on port " + "0x%016Lx opened read-only\n", unit->fcp_lun, unit->port->wwpn); } if (exclusive && !readwrite) { dev_err(&adapter->ccw_device->dev, - "Exclusive access of read-only unit " - "0x%016Lx on port 0x%016Lx not " - "supported, disabling unit.\n", + "Exclusive read-only access not " + "supported (unit 0x%016Lx, " + "port 0x%016Lx)\n", unit->fcp_lun, unit->port->wwpn); zfcp_erp_unit_failed(unit, 35, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; zfcp_erp_unit_shutdown(unit, 0, 80, req); } else if (!exclusive && readwrite) { dev_err(&adapter->ccw_device->dev, - "Shared access of read-write unit " - "0x%016Lx on port 0x%016Lx not " - "supported, disabling unit.\n", + "Shared read-write access not " + "supported (unit 0x%016Lx, port " + "0x%016Lx\n)", unit->fcp_lun, unit->port->wwpn); zfcp_erp_unit_failed(unit, 36, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; @@ -2166,9 +2096,8 @@ static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) break; case FSF_DIRECTION_INDICATOR_NOT_VALID: dev_err(&req->adapter->ccw_device->dev, - "Invalid data direction (%d) given for unit " - "0x%016Lx on port 0x%016Lx, shutting down " - "adapter.\n", + "Incorrect direction %d, unit 0x%016Lx on port " + "0x%016Lx closed\n", req->qtcb->bottom.io.data_direction, unit->fcp_lun, unit->port->wwpn); zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req); @@ -2176,9 +2105,8 @@ static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) break; case FSF_CMND_LENGTH_NOT_VALID: dev_err(&req->adapter->ccw_device->dev, - "An invalid control-data-block length field (%d) " - "was found in a command for unit 0x%016Lx on port " - "0x%016Lx. Shutting down adapter.\n", + "Incorrect CDB length %d, unit 0x%016Lx on " + "port 0x%016Lx closed\n", req->qtcb->bottom.io.fcp_cmnd_length, unit->fcp_lun, unit->port->wwpn); zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req); @@ -2306,10 +2234,9 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, retval = -EIO; else { dev_err(&adapter->ccw_device->dev, - "SCSI request too large. " - "Shutting down unit 0x%016Lx on port " - "0x%016Lx.\n", unit->fcp_lun, - unit->port->wwpn); + "Oversize data package, unit 0x%016Lx " + "on port 0x%016Lx closed\n", + unit->fcp_lun, unit->port->wwpn); zfcp_erp_unit_shutdown(unit, 0, 131, req); retval = -EINVAL; } diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index cc49eaa9281..9c5b8498090 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -57,7 +57,7 @@ void zfcp_qdio_free(struct zfcp_adapter *adapter) static void zfcp_qdio_handler_error(struct zfcp_adapter *adapter, u8 id) { - dev_warn(&adapter->ccw_device->dev, "QDIO problem occurred.\n"); + dev_warn(&adapter->ccw_device->dev, "A QDIO problem occurred\n"); zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | @@ -174,8 +174,8 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, if (unlikely(!(sbale->flags & SBAL_FLAGS_LAST_ENTRY))) dev_warn(&adapter->ccw_device->dev, - "Protocol violation by adapter. " - "Continuing operations.\n"); + "A QDIO protocol error occurred, " + "operations continue\n"); } /* @@ -457,17 +457,11 @@ int zfcp_qdio_open(struct zfcp_adapter *adapter) if (atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) return -EIO; - if (qdio_establish(&adapter->qdio_init_data)) { - dev_err(&adapter->ccw_device->dev, - "Establish of QDIO queues failed.\n"); - return -EIO; - } + if (qdio_establish(&adapter->qdio_init_data)) + goto failed_establish; - if (qdio_activate(adapter->ccw_device)) { - dev_err(&adapter->ccw_device->dev, - "Activate of QDIO queues failed.\n"); + if (qdio_activate(adapter->ccw_device)) goto failed_qdio; - } for (cc = 0; cc < QDIO_MAX_BUFFERS_PER_Q; cc++) { sbale = &(adapter->resp_q.sbal[cc]->element[0]); @@ -477,11 +471,8 @@ int zfcp_qdio_open(struct zfcp_adapter *adapter) } if (do_QDIO(adapter->ccw_device, QDIO_FLAG_SYNC_INPUT, 0, 0, - QDIO_MAX_BUFFERS_PER_Q)) { - dev_err(&adapter->ccw_device->dev, - "Init of QDIO response queue failed.\n"); + QDIO_MAX_BUFFERS_PER_Q)) goto failed_qdio; - } /* set index of first avalable SBALS / number of available SBALS */ adapter->req_q.first = 0; @@ -492,5 +483,8 @@ int zfcp_qdio_open(struct zfcp_adapter *adapter) failed_qdio: qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR); +failed_establish: + dev_err(&adapter->ccw_device->dev, + "Setting up the QDIO connection to the FCP adapter failed\n"); return -EIO; } diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index aeae56b00b4..6348cc5520e 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -294,7 +294,8 @@ int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter) sizeof (struct zfcp_adapter *)); if (!adapter->scsi_host) { dev_err(&adapter->ccw_device->dev, - "registration with SCSI stack failed."); + "Registering the FCP device with the " + "SCSI stack failed\n"); return -EIO; } -- cgit v1.2.3 From 44cc76f2d154aa24340354b4711a0fe7f8f08adc Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Wed, 1 Oct 2008 12:42:16 +0200 Subject: [SCSI] zfcp: remove unused references, declarations and flags - Remove unused references and declarations, including one instance of the FC ls_adisc struct that has been defined twice. - Also remove the flags COMMON_OPENING, COMMON_CLOSING, ADAPTER_REGISTERED and XPORT_OK that are only set and cleared, but not checked anywhere. - Remove the zfcp specific atomic_test_mask makro. Simply use atomic_read directly instead. - Remove the zfcp internal sg helper functions and switch the places where it is still used to call sg_virt directly. - With the update of the QDIO code, the QDIO data structures no longer use the volatile type qualifier. Now we can also remove the volatile qualifiers from the zfcp code. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_aux.c | 4 +-- drivers/s390/scsi/zfcp_ccw.c | 6 ++-- drivers/s390/scsi/zfcp_dbf.c | 11 +++--- drivers/s390/scsi/zfcp_def.h | 81 ++----------------------------------------- drivers/s390/scsi/zfcp_erp.c | 17 ++------- drivers/s390/scsi/zfcp_ext.h | 6 ++-- drivers/s390/scsi/zfcp_fc.c | 19 +++++----- drivers/s390/scsi/zfcp_fsf.c | 59 +++++++++++-------------------- drivers/s390/scsi/zfcp_fsf.h | 75 --------------------------------------- drivers/s390/scsi/zfcp_qdio.c | 28 +++++++-------- drivers/s390/scsi/zfcp_scsi.c | 3 -- 11 files changed, 60 insertions(+), 249 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index a8c965b6f74..ee13a455c82 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -351,7 +351,7 @@ err_out_free: */ void zfcp_unit_dequeue(struct zfcp_unit *unit) { - zfcp_unit_wait(unit); + wait_event(unit->remove_wq, atomic_read(&unit->refcount) == 0); write_lock_irq(&zfcp_data.config_lock); list_del(&unit->list); write_unlock_irq(&zfcp_data.config_lock); @@ -740,7 +740,7 @@ err_out: */ void zfcp_port_dequeue(struct zfcp_port *port) { - zfcp_port_wait(port); + wait_event(port->remove_wq, atomic_read(&port->refcount) == 0); write_lock_irq(&zfcp_data.config_lock); list_del(&port->list); port->adapter->ports--; diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c index ef8bdfbb55f..0e1a42f7a4b 100644 --- a/drivers/s390/scsi/zfcp_ccw.c +++ b/drivers/s390/scsi/zfcp_ccw.c @@ -67,14 +67,14 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device) list_for_each_entry_safe(port, p, &adapter->port_remove_lh, list) { list_for_each_entry_safe(unit, u, &port->unit_remove_lh, list) { - if (atomic_test_mask(ZFCP_STATUS_UNIT_REGISTERED, - &unit->status)) + if (atomic_read(&unit->status) & + ZFCP_STATUS_UNIT_REGISTERED) scsi_remove_device(unit->device); zfcp_unit_dequeue(unit); } zfcp_port_dequeue(port); } - zfcp_adapter_wait(adapter); + wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0); zfcp_adapter_dequeue(adapter); up(&zfcp_data.config_sema); diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index 91b1a364a24..d088d30516f 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -831,7 +831,7 @@ void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req) struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data; struct zfcp_port *port = ct->port; struct zfcp_adapter *adapter = port->adapter; - struct ct_hdr *hdr = zfcp_sg_to_address(ct->req); + struct ct_hdr *hdr = sg_virt(ct->req); struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf; struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req; unsigned long flags; @@ -865,7 +865,7 @@ void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req) struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data; struct zfcp_port *port = ct->port; struct zfcp_adapter *adapter = port->adapter; - struct ct_hdr *hdr = zfcp_sg_to_address(ct->resp); + struct ct_hdr *hdr = sg_virt(ct->resp); struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf; struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp; unsigned long flags; @@ -922,8 +922,8 @@ void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req) zfcp_san_dbf_event_els("oels", 2, fsf_req, fc_host_port_id(els->adapter->scsi_host), - els->d_id, *(u8 *) zfcp_sg_to_address(els->req), - zfcp_sg_to_address(els->req), els->req->length); + els->d_id, *(u8 *) sg_virt(els->req), + sg_virt(els->req), els->req->length); } /** @@ -936,8 +936,7 @@ void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req) zfcp_san_dbf_event_els("rels", 2, fsf_req, els->d_id, fc_host_port_id(els->adapter->scsi_host), - *(u8 *)zfcp_sg_to_address(els->req), - zfcp_sg_to_address(els->resp), + *(u8 *)sg_virt(els->req), sg_virt(els->resp), els->resp->length); } diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 74d7529621b..699ecaf2e50 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -39,29 +39,6 @@ /********************* GENERAL DEFINES *********************************/ -/** - * zfcp_sg_to_address - determine kernel address from struct scatterlist - * @list: struct scatterlist - * Return: kernel address - */ -static inline void * -zfcp_sg_to_address(struct scatterlist *list) -{ - return sg_virt(list); -} - -/** - * zfcp_address_to_sg - set up struct scatterlist from kernel address - * @address: kernel address - * @list: struct scatterlist - * @size: buffer size - */ -static inline void -zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size) -{ - sg_set_buf(list, address, size); -} - #define REQUEST_LIST_SIZE 128 /********************* SCSI SPECIFIC DEFINES *********************************/ @@ -218,13 +195,6 @@ struct fcp_logo { #define ZFCP_LS_RSCN 0x61 #define ZFCP_LS_RNID 0x78 -struct zfcp_ls_rjt_par { - u8 action; - u8 reason_code; - u8 reason_expl; - u8 vendor_unique; -} __attribute__ ((packed)); - struct zfcp_ls_adisc { u8 code; u8 field[3]; @@ -234,20 +204,6 @@ struct zfcp_ls_adisc { u32 nport_id; } __attribute__ ((packed)); -struct zfcp_ls_adisc_acc { - u8 code; - u8 field[3]; - u32 hard_nport_id; - u64 wwpn; - u64 wwnn; - u32 nport_id; -} __attribute__ ((packed)); - -struct zfcp_rc_entry { - u8 code; - const char *description; -}; - /* * FC-GS-2 stuff */ @@ -281,9 +237,7 @@ struct zfcp_rc_entry { #define ZFCP_STATUS_COMMON_RUNNING 0x40000000 #define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000 #define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000 -#define ZFCP_STATUS_COMMON_OPENING 0x08000000 #define ZFCP_STATUS_COMMON_OPEN 0x04000000 -#define ZFCP_STATUS_COMMON_CLOSING 0x02000000 #define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000 #define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000 #define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000 @@ -291,14 +245,12 @@ struct zfcp_rc_entry { /* adapter status */ #define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002 -#define ZFCP_STATUS_ADAPTER_REGISTERED 0x00000004 #define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_UP 0x00000020 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL 0x00000080 #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 -#define ZFCP_STATUS_ADAPTER_XPORT_OK 0x00000800 /* FC-PH/FC-GS well-known address identifiers for generic services */ #define ZFCP_DID_MANAGEMENT_SERVICE 0xFFFFFA @@ -321,20 +273,16 @@ struct zfcp_rc_entry { ZFCP_STATUS_PORT_NO_SCSI_ID) /* logical unit status */ -#define ZFCP_STATUS_UNIT_TEMPORARY 0x00000002 #define ZFCP_STATUS_UNIT_SHARED 0x00000004 #define ZFCP_STATUS_UNIT_READONLY 0x00000008 #define ZFCP_STATUS_UNIT_REGISTERED 0x00000010 #define ZFCP_STATUS_UNIT_SCSI_WORK_PENDING 0x00000020 /* FSF request status (this does not have a common part) */ -#define ZFCP_STATUS_FSFREQ_NOT_INIT 0x00000000 -#define ZFCP_STATUS_FSFREQ_POOL 0x00000001 #define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT 0x00000002 #define ZFCP_STATUS_FSFREQ_COMPLETED 0x00000004 #define ZFCP_STATUS_FSFREQ_ERROR 0x00000008 #define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010 -#define ZFCP_STATUS_FSFREQ_ABORTING 0x00000020 #define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040 #define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080 #define ZFCP_STATUS_FSFREQ_ABORTED 0x00000100 @@ -475,7 +423,7 @@ struct zfcp_erp_action { struct zfcp_adapter *adapter; /* device which should be recovered */ struct zfcp_port *port; struct zfcp_unit *unit; - volatile u32 status; /* recovery status */ + u32 status; /* recovery status */ u32 step; /* active step of this erp action */ struct zfcp_fsf_req *fsf_req; /* fsf request currently pending for this action */ @@ -626,7 +574,7 @@ struct zfcp_fsf_req { u8 sbal_response; /* SBAL used in interrupt */ wait_queue_head_t completion_wq; /* can be used by a routine to wait for completion */ - volatile u32 status; /* status of this request */ + u32 status; /* status of this request */ u32 fsf_command; /* FSF Command copy */ struct fsf_qtcb *qtcb; /* address of associated QTCB */ u32 seq_no; /* Sequence number of request */ @@ -678,14 +626,7 @@ struct zfcp_fsf_req_qtcb { #define ZFCP_SET 0x00000100 #define ZFCP_CLEAR 0x00000200 -#ifndef atomic_test_mask -#define atomic_test_mask(mask, target) \ - ((atomic_read(target) & mask) == mask) -#endif - #define zfcp_get_busid_by_adapter(adapter) (adapter->ccw_device->dev.bus_id) -#define zfcp_get_busid_by_port(port) (zfcp_get_busid_by_adapter(port->adapter)) -#define zfcp_get_busid_by_unit(unit) (zfcp_get_busid_by_port(unit->port)) /* * Helper functions for request ID management. @@ -745,12 +686,6 @@ zfcp_unit_put(struct zfcp_unit *unit) wake_up(&unit->remove_wq); } -static inline void -zfcp_unit_wait(struct zfcp_unit *unit) -{ - wait_event(unit->remove_wq, atomic_read(&unit->refcount) == 0); -} - static inline void zfcp_port_get(struct zfcp_port *port) { @@ -764,12 +699,6 @@ zfcp_port_put(struct zfcp_port *port) wake_up(&port->remove_wq); } -static inline void -zfcp_port_wait(struct zfcp_port *port) -{ - wait_event(port->remove_wq, atomic_read(&port->refcount) == 0); -} - static inline void zfcp_adapter_get(struct zfcp_adapter *adapter) { @@ -783,10 +712,4 @@ zfcp_adapter_put(struct zfcp_adapter *adapter) wake_up(&adapter->remove_wq); } -static inline void -zfcp_adapter_wait(struct zfcp_adapter *adapter) -{ - wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0); -} - #endif /* ZFCP_DEF_H */ diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 4dd8fe70c41..b18c6dd3729 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -669,8 +669,6 @@ static int zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *act) int ret; struct zfcp_adapter *adapter = act->adapter; - atomic_clear_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); - write_lock_irq(&adapter->erp_lock); zfcp_erp_action_to_running(act); write_unlock_irq(&adapter->erp_lock); @@ -741,8 +739,7 @@ static int zfcp_erp_adapter_strategy_generic(struct zfcp_erp_action *act, ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR); failed_qdio: atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK | - ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | - ZFCP_STATUS_ADAPTER_XPORT_OK, + ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &act->adapter->status); return retval; } @@ -751,15 +748,11 @@ static int zfcp_erp_adapter_strategy(struct zfcp_erp_action *act) { int retval; - atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &act->adapter->status); zfcp_erp_adapter_strategy_generic(act, 1); /* close */ - atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &act->adapter->status); if (act->status & ZFCP_STATUS_ERP_CLOSE_ONLY) return ZFCP_ERP_EXIT; - atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &act->adapter->status); retval = zfcp_erp_adapter_strategy_generic(act, 0); /* open */ - atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &act->adapter->status); if (retval == ZFCP_ERP_FAILED) ssleep(8); @@ -783,9 +776,7 @@ static int zfcp_erp_port_forced_strategy_close(struct zfcp_erp_action *act) static void zfcp_erp_port_strategy_clearstati(struct zfcp_port *port) { - atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING | - ZFCP_STATUS_COMMON_CLOSING | - ZFCP_STATUS_COMMON_ACCESS_DENIED | + atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | ZFCP_STATUS_PORT_DID_DID | ZFCP_STATUS_PORT_PHYS_CLOSING | ZFCP_STATUS_PORT_INVALID_WWPN, @@ -998,9 +989,7 @@ static int zfcp_erp_port_strategy(struct zfcp_erp_action *erp_action) static void zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *unit) { - atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING | - ZFCP_STATUS_COMMON_CLOSING | - ZFCP_STATUS_COMMON_ACCESS_DENIED | + atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | ZFCP_STATUS_UNIT_SHARED | ZFCP_STATUS_UNIT_READONLY, &unit->status); diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h index edfdb21591f..a8dd105dc08 100644 --- a/drivers/s390/scsi/zfcp_ext.h +++ b/drivers/s390/scsi/zfcp_ext.h @@ -135,10 +135,8 @@ extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long, extern int zfcp_qdio_allocate(struct zfcp_adapter *); extern void zfcp_qdio_free(struct zfcp_adapter *); extern int zfcp_qdio_send(struct zfcp_fsf_req *); -extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_req( - struct zfcp_fsf_req *); -extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_curr( - struct zfcp_fsf_req *); +extern struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *); +extern struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_fsf_req *); extern int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *, unsigned long, struct scatterlist *, int); extern int zfcp_qdio_open(struct zfcp_adapter *); diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 56196c98c07..44456f74a12 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -47,10 +47,11 @@ static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, read_lock_irqsave(&zfcp_data.config_lock, flags); list_for_each_entry(port, &fsf_req->adapter->port_list_head, list) { - if (atomic_test_mask(ZFCP_STATUS_PORT_WKA, &port->status)) + if ((atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA) == + ZFCP_STATUS_PORT_WKA) continue; /* FIXME: ZFCP_STATUS_PORT_DID_DID check is racy */ - if (!atomic_test_mask(ZFCP_STATUS_PORT_DID_DID, &port->status)) + if (!(atomic_read(&port->status) & ZFCP_STATUS_PORT_DID_DID)) /* Try to connect to unused ports anyway. */ zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, @@ -255,14 +256,14 @@ struct zfcp_els_adisc { struct scatterlist req; struct scatterlist resp; struct zfcp_ls_adisc ls_adisc; - struct zfcp_ls_adisc_acc ls_adisc_acc; + struct zfcp_ls_adisc ls_adisc_acc; }; static void zfcp_fc_adisc_handler(unsigned long data) { struct zfcp_els_adisc *adisc = (struct zfcp_els_adisc *) data; struct zfcp_port *port = adisc->els.port; - struct zfcp_ls_adisc_acc *ls_adisc = &adisc->ls_adisc_acc; + struct zfcp_ls_adisc *ls_adisc = &adisc->ls_adisc_acc; if (adisc->els.status) { /* request rejected or timed out */ @@ -295,7 +296,7 @@ static int zfcp_fc_adisc(struct zfcp_port *port) sg_init_one(adisc->els.req, &adisc->ls_adisc, sizeof(struct zfcp_ls_adisc)); sg_init_one(adisc->els.resp, &adisc->ls_adisc_acc, - sizeof(struct zfcp_ls_adisc_acc)); + sizeof(struct zfcp_ls_adisc)); adisc->els.req_count = 1; adisc->els.resp_count = 1; @@ -345,16 +346,16 @@ static int zfcp_scan_get_nameserver(struct zfcp_adapter *adapter) if (!adapter->nameserver_port) return -EINTR; - if (!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, - &adapter->nameserver_port->status)) { + if (!(atomic_read(&adapter->nameserver_port->status) & + ZFCP_STATUS_COMMON_UNBLOCKED)) { ret = zfcp_erp_port_reopen(adapter->nameserver_port, 0, 148, NULL); if (ret) return ret; zfcp_erp_wait(adapter); } - return !atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, - &adapter->nameserver_port->status); + return !(atomic_read(&adapter->nameserver_port->status) & + ZFCP_STATUS_COMMON_UNBLOCKED); } static void zfcp_gpn_ft_handler(unsigned long _done) diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 489a1896499..af75fd2ef1e 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -621,7 +621,6 @@ static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) { - struct zfcp_adapter *adapter = req->adapter; struct fsf_qtcb *qtcb = req->qtcb; if (req->status & ZFCP_STATUS_FSFREQ_ERROR) @@ -630,11 +629,9 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) switch (qtcb->header.fsf_status) { case FSF_GOOD: zfcp_fsf_exchange_port_evaluate(req); - atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); break; case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: zfcp_fsf_exchange_port_evaluate(req); - atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); zfcp_fsf_link_down_info_eval(req, 43, &qtcb->header.fsf_status_qual.link_down_info); break; @@ -708,7 +705,7 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags, mempool_t *pool) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req; struct zfcp_qdio_queue *req_q = &adapter->req_q; @@ -810,7 +807,7 @@ int zfcp_fsf_status_read(struct zfcp_adapter *adapter) { struct zfcp_fsf_req *req; struct fsf_status_read_buffer *sr_buf; - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int retval = -EIO; spin_lock_bh(&adapter->req_q.lock); @@ -923,7 +920,7 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, struct zfcp_unit *unit, int req_flags) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; spin_lock(&adapter->req_q.lock); @@ -1171,8 +1168,8 @@ int zfcp_fsf_send_els(struct zfcp_send_els *els) goto out; } - ret = zfcp_fsf_setup_sbals(req, els->req, els->resp, - FSF_MAX_SBALS_PER_ELS_REQ); + ret = zfcp_fsf_setup_sbals(req, els->req, els->resp, 2); + if (ret) goto failed_send; @@ -1201,7 +1198,7 @@ out: int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req; struct zfcp_adapter *adapter = erp_action->adapter; int retval = -EIO; @@ -1245,7 +1242,7 @@ out: int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, struct fsf_qtcb_bottom_config *data) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; int retval = -EIO; @@ -1294,7 +1291,7 @@ out: */ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req; struct zfcp_adapter *adapter = erp_action->adapter; int retval = -EIO; @@ -1341,7 +1338,7 @@ out: int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, struct fsf_qtcb_bottom_port *data) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; int retval = -EIO; @@ -1386,7 +1383,7 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) struct fsf_plogi *plogi; if (req->status & ZFCP_STATUS_FSFREQ_ERROR) - goto skip_fsfstatus; + return; switch (header->fsf_status) { case FSF_PORT_ALREADY_OPEN: @@ -1456,9 +1453,6 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; } - -skip_fsfstatus: - atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status); } /** @@ -1468,7 +1462,7 @@ skip_fsfstatus: */ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_fsf_req *req; int retval = -EIO; @@ -1495,7 +1489,6 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) req->data = erp_action->port; req->erp_action = erp_action; erp_action->fsf_req = req; - atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status); zfcp_fsf_start_erp_timer(req); retval = zfcp_fsf_req_send(req); @@ -1513,7 +1506,7 @@ static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) struct zfcp_port *port = req->data; if (req->status & ZFCP_STATUS_FSFREQ_ERROR) - goto skip_fsfstatus; + return; switch (req->qtcb->header.fsf_status) { case FSF_PORT_HANDLE_NOT_VALID: @@ -1528,9 +1521,6 @@ static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) ZFCP_CLEAR); break; } - -skip_fsfstatus: - atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status); } /** @@ -1540,7 +1530,7 @@ skip_fsfstatus: */ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_fsf_req *req; int retval = -EIO; @@ -1566,7 +1556,6 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) req->erp_action = erp_action; req->qtcb->header.port_handle = erp_action->port->handle; erp_action->fsf_req = req; - atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status); zfcp_fsf_start_erp_timer(req); retval = zfcp_fsf_req_send(req); @@ -1637,7 +1626,7 @@ skip_fsfstatus: */ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_fsf_req *req; int retval = -EIO; @@ -1688,7 +1677,7 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) int exclusive, readwrite; if (req->status & ZFCP_STATUS_FSFREQ_ERROR) - goto skip_fsfstatus; + return; atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | ZFCP_STATUS_COMMON_ACCESS_BOXED | @@ -1798,9 +1787,6 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) } break; } - -skip_fsfstatus: - atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status); } /** @@ -1810,7 +1796,7 @@ skip_fsfstatus: */ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_fsf_req *req; int retval = -EIO; @@ -1841,8 +1827,6 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; - atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status); - zfcp_fsf_start_erp_timer(req); retval = zfcp_fsf_req_send(req); if (retval) { @@ -1859,7 +1843,7 @@ static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) struct zfcp_unit *unit = req->data; if (req->status & ZFCP_STATUS_FSFREQ_ERROR) - goto skip_fsfstatus; + return; switch (req->qtcb->header.fsf_status) { case FSF_PORT_HANDLE_NOT_VALID: @@ -1889,8 +1873,6 @@ static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); break; } -skip_fsfstatus: - atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status); } /** @@ -1900,7 +1882,7 @@ skip_fsfstatus: */ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_fsf_req *req; int retval = -EIO; @@ -1926,7 +1908,6 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) req->data = erp_action->unit; req->erp_action = erp_action; erp_action->fsf_req = req; - atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status); zfcp_fsf_start_erp_timer(req); retval = zfcp_fsf_req_send(req); @@ -2275,7 +2256,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, struct zfcp_unit *unit, u8 tm_flags, int req_flags) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; struct fcp_cmnd_iu *fcp_cmnd_iu; @@ -2335,7 +2316,7 @@ static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, struct zfcp_fsf_cfdc *fsf_cfdc) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; struct fsf_qtcb_bottom_support *bottom; int direction, retval = -EIO, bytes; diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h index bf94b4da076..fd3a88777ac 100644 --- a/drivers/s390/scsi/zfcp_fsf.h +++ b/drivers/s390/scsi/zfcp_fsf.h @@ -71,13 +71,6 @@ #define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED 0x00000041 #define FSF_ELS_COMMAND_REJECTED 0x00000050 #define FSF_GENERIC_COMMAND_REJECTED 0x00000051 -#define FSF_OPERATION_PARTIALLY_SUCCESSFUL 0x00000052 -#define FSF_AUTHORIZATION_FAILURE 0x00000053 -#define FSF_CFDC_ERROR_DETECTED 0x00000054 -#define FSF_CONTROL_FILE_UPDATE_ERROR 0x00000055 -#define FSF_CONTROL_FILE_TOO_LARGE 0x00000056 -#define FSF_ACCESS_CONFLICT_DETECTED 0x00000057 -#define FSF_CONFLICTS_OVERRULED 0x00000058 #define FSF_PORT_BOXED 0x00000059 #define FSF_LUN_BOXED 0x0000005A #define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE 0x0000005B @@ -85,9 +78,7 @@ #define FSF_REQUEST_SIZE_TOO_LARGE 0x00000061 #define FSF_RESPONSE_SIZE_TOO_LARGE 0x00000062 #define FSF_SBAL_MISMATCH 0x00000063 -#define FSF_OPEN_PORT_WITHOUT_PRLI 0x00000064 #define FSF_ADAPTER_STATUS_AVAILABLE 0x000000AD -#define FSF_FCP_RSP_AVAILABLE 0x000000AF #define FSF_UNKNOWN_COMMAND 0x000000E2 #define FSF_UNKNOWN_OP_SUBTYPE 0x000000E3 #define FSF_INVALID_COMMAND_OPTION 0x000000E5 @@ -102,20 +93,9 @@ #define FSF_SQ_RETRY_IF_POSSIBLE 0x02 #define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED 0x03 #define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE 0x04 -#define FSF_SQ_ULP_PROGRAMMING_ERROR 0x05 #define FSF_SQ_COMMAND_ABORTED 0x06 #define FSF_SQ_NO_RETRY_POSSIBLE 0x07 -/* FSF status qualifier for CFDC commands */ -#define FSF_SQ_CFDC_HARDENED_ON_SE 0x00000000 -#define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE 0x00000001 -#define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2 0x00000002 -/* CFDC subtable codes */ -#define FSF_SQ_CFDC_SUBTABLE_OS 0x0001 -#define FSF_SQ_CFDC_SUBTABLE_PORT_WWPN 0x0002 -#define FSF_SQ_CFDC_SUBTABLE_PORT_DID 0x0003 -#define FSF_SQ_CFDC_SUBTABLE_LUN 0x0004 - /* FSF status qualifier (most significant 4 bytes), local link down */ #define FSF_PSQ_LINK_NO_LIGHT 0x00000004 #define FSF_PSQ_LINK_WRAP_PLUG 0x00000008 @@ -145,7 +125,6 @@ #define FSF_STATUS_READ_LINK_UP 0x00000006 #define FSF_STATUS_READ_NOTIFICATION_LOST 0x00000009 #define FSF_STATUS_READ_CFDC_UPDATED 0x0000000A -#define FSF_STATUS_READ_CFDC_HARDENED 0x0000000B #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT 0x0000000C /* status subtypes in status read buffer */ @@ -159,20 +138,9 @@ /* status subtypes for unsolicited status notification lost */ #define FSF_STATUS_READ_SUB_INCOMING_ELS 0x00000001 -#define FSF_STATUS_READ_SUB_SENSE_DATA 0x00000002 -#define FSF_STATUS_READ_SUB_LINK_STATUS 0x00000004 -#define FSF_STATUS_READ_SUB_PORT_CLOSED 0x00000008 -#define FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD 0x00000010 #define FSF_STATUS_READ_SUB_ACT_UPDATED 0x00000020 -#define FSF_STATUS_READ_SUB_ACT_HARDENED 0x00000040 -#define FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT 0x00000080 - -/* status subtypes for CFDC */ -#define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE 0x00000002 -#define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2 0x0000000F /* topologie that is detected by the adapter */ -#define FSF_TOPO_ERROR 0x00000000 #define FSF_TOPO_P2P 0x00000001 #define FSF_TOPO_FABRIC 0x00000002 #define FSF_TOPO_AL 0x00000003 @@ -180,17 +148,13 @@ /* data direction for FCP commands */ #define FSF_DATADIR_WRITE 0x00000001 #define FSF_DATADIR_READ 0x00000002 -#define FSF_DATADIR_READ_WRITE 0x00000003 #define FSF_DATADIR_CMND 0x00000004 /* fc service class */ -#define FSF_CLASS_1 0x00000001 -#define FSF_CLASS_2 0x00000002 #define FSF_CLASS_3 0x00000003 /* SBAL chaining */ #define FSF_MAX_SBALS_PER_REQ 36 -#define FSF_MAX_SBALS_PER_ELS_REQ 2 /* logging space behind QTCB */ #define FSF_QTCB_LOG_SIZE 1024 @@ -200,50 +164,16 @@ #define FSF_FEATURE_LUN_SHARING 0x00000004 #define FSF_FEATURE_NOTIFICATION_LOST 0x00000008 #define FSF_FEATURE_HBAAPI_MANAGEMENT 0x00000010 -#define FSF_FEATURE_ELS_CT_CHAINED_SBALS 0x00000020 #define FSF_FEATURE_UPDATE_ALERT 0x00000100 #define FSF_FEATURE_MEASUREMENT_DATA 0x00000200 /* host connection features */ #define FSF_FEATURE_NPIV_MODE 0x00000001 -#define FSF_FEATURE_VM_ASSIGNED_WWPN 0x00000002 /* option */ #define FSF_OPEN_LUN_SUPPRESS_BOXING 0x00000001 -#define FSF_OPEN_LUN_REPLICATE_SENSE 0x00000002 - -/* adapter types */ -#define FSF_ADAPTER_TYPE_FICON 0x00000001 -#define FSF_ADAPTER_TYPE_FICON_EXPRESS 0x00000002 - -/* port types */ -#define FSF_HBA_PORTTYPE_UNKNOWN 0x00000001 -#define FSF_HBA_PORTTYPE_NOTPRESENT 0x00000003 -#define FSF_HBA_PORTTYPE_NPORT 0x00000005 -#define FSF_HBA_PORTTYPE_PTP 0x00000021 -/* following are not defined and used by FSF Spec - but are additionally defined by FC-HBA */ -#define FSF_HBA_PORTTYPE_OTHER 0x00000002 -#define FSF_HBA_PORTTYPE_NOTPRESENT 0x00000003 -#define FSF_HBA_PORTTYPE_NLPORT 0x00000006 -#define FSF_HBA_PORTTYPE_FLPORT 0x00000007 -#define FSF_HBA_PORTTYPE_FPORT 0x00000008 -#define FSF_HBA_PORTTYPE_LPORT 0x00000020 - -/* port states */ -#define FSF_HBA_PORTSTATE_UNKNOWN 0x00000001 -#define FSF_HBA_PORTSTATE_ONLINE 0x00000002 -#define FSF_HBA_PORTSTATE_OFFLINE 0x00000003 -#define FSF_HBA_PORTSTATE_LINKDOWN 0x00000006 -#define FSF_HBA_PORTSTATE_ERROR 0x00000007 - -/* IO states of adapter */ -#define FSF_IOSTAT_NPORT_RJT 0x00000004 -#define FSF_IOSTAT_FABRIC_RJT 0x00000005 -#define FSF_IOSTAT_LS_RJT 0x00000009 /* open LUN access flags*/ -#define FSF_UNIT_ACCESS_OPEN_LUN_ALLOWED 0x01000000 #define FSF_UNIT_ACCESS_EXCLUSIVE 0x02000000 #define FSF_UNIT_ACCESS_OUTBOUND_TRANSFER 0x10000000 @@ -265,11 +195,6 @@ struct fsf_queue_designator { u32 res1; } __attribute__ ((packed)); -struct fsf_port_closed_payload { - struct fsf_queue_designator queue_designator; - u32 port_handle; -} __attribute__ ((packed)); - struct fsf_bit_error_payload { u32 res1; u32 link_failure_error_count; diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index 9c5b8498090..0dfaa176af7 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -28,7 +28,7 @@ static int zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbal) return 0; } -static volatile struct qdio_buffer_element * +static struct qdio_buffer_element * zfcp_qdio_sbale(struct zfcp_qdio_queue *q, int sbal_idx, int sbale_idx) { return &q->sbal[sbal_idx]->element[sbale_idx]; @@ -145,7 +145,7 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, { struct zfcp_adapter *adapter = (struct zfcp_adapter *) parm; struct zfcp_qdio_queue *queue = &adapter->resp_q; - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int sbal_idx, sbale_idx, sbal_no; if (unlikely(qdio_err)) { @@ -190,8 +190,7 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, * @fsf_req: pointer to struct fsf_req * Returns: pointer to qdio_buffer_element (SBALE) structure */ -volatile struct qdio_buffer_element * -zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) +struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) { return zfcp_qdio_sbale(&req->adapter->req_q, req->sbal_last, 0); } @@ -201,8 +200,7 @@ zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) * @fsf_req: pointer to struct fsf_req * Returns: pointer to qdio_buffer_element (SBALE) structure */ -volatile struct qdio_buffer_element * -zfcp_qdio_sbale_curr(struct zfcp_fsf_req *req) +struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_fsf_req *req) { return zfcp_qdio_sbale(&req->adapter->req_q, req->sbal_last, req->sbale_curr); @@ -216,10 +214,10 @@ static void zfcp_qdio_sbal_limit(struct zfcp_fsf_req *fsf_req, int max_sbals) % QDIO_MAX_BUFFERS_PER_Q; } -static volatile struct qdio_buffer_element * +static struct qdio_buffer_element * zfcp_qdio_sbal_chain(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; /* set last entry flag in current SBALE of current SBAL */ sbale = zfcp_qdio_sbale_curr(fsf_req); @@ -250,7 +248,7 @@ zfcp_qdio_sbal_chain(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) return sbale; } -static volatile struct qdio_buffer_element * +static struct qdio_buffer_element * zfcp_qdio_sbale_next(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) { if (fsf_req->sbale_curr == ZFCP_LAST_SBALE_PER_SBAL) @@ -273,7 +271,7 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, unsigned int sbtype, void *start_addr, unsigned int total_length) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; unsigned long remaining, length; void *addr; @@ -308,7 +306,7 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *fsf_req, unsigned long sbtype, struct scatterlist *sg, int max_sbals) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int retval, bytes = 0; /* figure out last allowed SBAL */ @@ -345,7 +343,7 @@ int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req) int first = fsf_req->sbal_first; int count = fsf_req->sbal_number; int retval, pci, pci_batch; - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; /* acknowledgements for transferred buffers */ pci_batch = req_q->pci_batch + count; @@ -419,7 +417,7 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) struct zfcp_qdio_queue *req_q; int first, count; - if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) + if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) return; /* clear QDIOUP flag, thus do_QDIO is not called during qdio_shutdown */ @@ -451,10 +449,10 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) */ int zfcp_qdio_open(struct zfcp_adapter *adapter) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int cc; - if (atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) + if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP) return -EIO; if (qdio_establish(&adapter->qdio_init_data)) diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index 6348cc5520e..2095a1e41e8 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -183,7 +183,6 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) return retval; } fsf_req->data = NULL; - fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTING; /* don't access old fsf_req after releasing the abort_lock */ write_unlock_irqrestore(&adapter->abort_lock, flags); @@ -313,7 +312,6 @@ int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter) scsi_host_put(adapter->scsi_host); return -EIO; } - atomic_set_mask(ZFCP_STATUS_ADAPTER_REGISTERED, &adapter->status); return 0; } @@ -337,7 +335,6 @@ void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter) scsi_remove_host(shost); scsi_host_put(shost); adapter->scsi_host = NULL; - atomic_clear_mask(ZFCP_STATUS_ADAPTER_REGISTERED, &adapter->status); return; } -- cgit v1.2.3 From 5ab944f97e09a3d52951fe903eed9a7b88d810b2 Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Wed, 1 Oct 2008 12:42:17 +0200 Subject: [SCSI] zfcp: attach and release SAN nameserver port on demand Changing the zfcp behaviour from always having the nameserver port open to an on-demand strategy. This strategy reduces the use of limited resources like port connections. The patch provides a common infrastructure which could be used for all WKA ports in future. Also reduce the number of nameserver lookups by changing the zfcp behaviour of always querying the nameserver for the corresponding destination ID of the remote port. If the destination ID has changed during the reopen process we will be informed and then trigger a nameserver query on demand. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_aux.c | 65 ++----------- drivers/s390/scsi/zfcp_dbf.c | 14 +-- drivers/s390/scsi/zfcp_def.h | 31 ++++-- drivers/s390/scsi/zfcp_erp.c | 149 ++++++++-------------------- drivers/s390/scsi/zfcp_ext.h | 7 +- drivers/s390/scsi/zfcp_fc.c | 215 +++++++++++++++++++++++++++++------------ drivers/s390/scsi/zfcp_fsf.c | 137 ++++++++++++++++++++++++-- drivers/s390/scsi/zfcp_sysfs.c | 19 +--- 8 files changed, 362 insertions(+), 275 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index ee13a455c82..181f88bb53b 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -450,19 +450,6 @@ static void _zfcp_status_read_scheduler(struct work_struct *work) stat_work)); } -static int zfcp_nameserver_enqueue(struct zfcp_adapter *adapter) -{ - struct zfcp_port *port; - - port = zfcp_port_enqueue(adapter, 0, ZFCP_STATUS_PORT_WKA, - ZFCP_DID_DIRECTORY_SERVICE); - if (IS_ERR(port)) - return PTR_ERR(port); - zfcp_port_put(port); - - return 0; -} - /** * zfcp_adapter_enqueue - enqueue a new adapter to the list * @ccw_device: pointer to the struct cc_device @@ -552,7 +539,7 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) zfcp_data.adapters++; - zfcp_nameserver_enqueue(adapter); + zfcp_fc_nameserver_init(adapter); return 0; @@ -638,7 +625,6 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, { struct zfcp_port *port; int retval; - char *bus_id; port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL); if (!port) @@ -648,6 +634,7 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, INIT_LIST_HEAD(&port->unit_list_head); INIT_LIST_HEAD(&port->unit_remove_lh); + INIT_WORK(&port->gid_pn_work, zfcp_erp_port_strategy_open_lookup); port->adapter = adapter; port->d_id = d_id; @@ -657,34 +644,8 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status); atomic_set(&port->refcount, 0); - if (status & ZFCP_STATUS_PORT_WKA) { - switch (d_id) { - case ZFCP_DID_DIRECTORY_SERVICE: - bus_id = "directory"; - break; - case ZFCP_DID_MANAGEMENT_SERVICE: - bus_id = "management"; - break; - case ZFCP_DID_KEY_DISTRIBUTION_SERVICE: - bus_id = "key_distribution"; - break; - case ZFCP_DID_ALIAS_SERVICE: - bus_id = "alias"; - break; - case ZFCP_DID_TIME_SERVICE: - bus_id = "time"; - break; - default: - kfree(port); - return ERR_PTR(-EINVAL); - } - snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE, "%s", bus_id); - port->sysfs_device.parent = &adapter->generic_services; - } else { - snprintf(port->sysfs_device.bus_id, - BUS_ID_SIZE, "0x%016llx", wwpn); - port->sysfs_device.parent = &adapter->ccw_device->dev; - } + snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", wwpn); + port->sysfs_device.parent = &adapter->ccw_device->dev; port->sysfs_device.release = zfcp_sysfs_port_release; dev_set_drvdata(&port->sysfs_device, port); @@ -700,12 +661,8 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, if (device_register(&port->sysfs_device)) goto err_out_free; - if (status & ZFCP_STATUS_PORT_WKA) - retval = sysfs_create_group(&port->sysfs_device.kobj, - &zfcp_sysfs_ns_port_attrs); - else - retval = sysfs_create_group(&port->sysfs_device.kobj, - &zfcp_sysfs_port_attrs); + retval = sysfs_create_group(&port->sysfs_device.kobj, + &zfcp_sysfs_port_attrs); if (retval) { device_unregister(&port->sysfs_device); @@ -718,9 +675,6 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, list_add_tail(&port->list, &adapter->port_list_head); atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING, &port->status); - if (d_id == ZFCP_DID_DIRECTORY_SERVICE) - if (!adapter->nameserver_port) - adapter->nameserver_port = port; adapter->ports++; write_unlock_irq(&zfcp_data.config_lock); @@ -749,12 +703,7 @@ void zfcp_port_dequeue(struct zfcp_port *port) fc_remote_port_delete(port->rport); port->rport = NULL; zfcp_adapter_put(port->adapter); - if (atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA) - sysfs_remove_group(&port->sysfs_device.kobj, - &zfcp_sysfs_ns_port_attrs); - else - sysfs_remove_group(&port->sysfs_device.kobj, - &zfcp_sysfs_port_attrs); + sysfs_remove_group(&port->sysfs_device.kobj, &zfcp_sysfs_port_attrs); device_unregister(&port->sysfs_device); } diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index d088d30516f..c1f69f611e6 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -519,7 +519,7 @@ static const char *zfcp_rec_dbf_ids[] = { [75] = "physical port recovery escalation after failed port " "recovery", [76] = "port recovery escalation after failed unit recovery", - [77] = "recovery opening nameserver port", + [77] = "", [78] = "duplicate request id", [79] = "link down", [80] = "exclusive read-only unit access unsupported", @@ -829,8 +829,8 @@ void zfcp_rec_dbf_event_action(u8 id2, struct zfcp_erp_action *erp_action) void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req) { struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data; - struct zfcp_port *port = ct->port; - struct zfcp_adapter *adapter = port->adapter; + struct zfcp_wka_port *wka_port = ct->wka_port; + struct zfcp_adapter *adapter = wka_port->adapter; struct ct_hdr *hdr = sg_virt(ct->req); struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf; struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req; @@ -842,7 +842,7 @@ void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req) r->fsf_reqid = (unsigned long)fsf_req; r->fsf_seqno = fsf_req->seq_no; r->s_id = fc_host_port_id(adapter->scsi_host); - r->d_id = port->d_id; + r->d_id = wka_port->d_id; oct->cmd_req_code = hdr->cmd_rsp_code; oct->revision = hdr->revision; oct->gs_type = hdr->gs_type; @@ -863,8 +863,8 @@ void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req) void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req) { struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data; - struct zfcp_port *port = ct->port; - struct zfcp_adapter *adapter = port->adapter; + struct zfcp_wka_port *wka_port = ct->wka_port; + struct zfcp_adapter *adapter = wka_port->adapter; struct ct_hdr *hdr = sg_virt(ct->resp); struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf; struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp; @@ -875,7 +875,7 @@ void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req) strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE); r->fsf_reqid = (unsigned long)fsf_req; r->fsf_seqno = fsf_req->seq_no; - r->s_id = port->d_id; + r->s_id = wka_port->d_id; r->d_id = fc_host_port_id(adapter->scsi_host); rct->cmd_rsp_code = hdr->cmd_rsp_code; rct->revision = hdr->revision; diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 699ecaf2e50..0d6a388882d 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -253,6 +253,7 @@ struct zfcp_ls_adisc { #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 /* FC-PH/FC-GS well-known address identifiers for generic services */ +#define ZFCP_DID_WKA 0xFFFFF0 #define ZFCP_DID_MANAGEMENT_SERVICE 0xFFFFFA #define ZFCP_DID_TIME_SERVICE 0xFFFFFB #define ZFCP_DID_DIRECTORY_SERVICE 0xFFFFFC @@ -264,13 +265,15 @@ struct zfcp_ls_adisc { #define ZFCP_STATUS_PORT_DID_DID 0x00000002 #define ZFCP_STATUS_PORT_PHYS_CLOSING 0x00000004 #define ZFCP_STATUS_PORT_NO_WWPN 0x00000008 -#define ZFCP_STATUS_PORT_NO_SCSI_ID 0x00000010 #define ZFCP_STATUS_PORT_INVALID_WWPN 0x00000020 -/* for ports with well known addresses */ -#define ZFCP_STATUS_PORT_WKA \ - (ZFCP_STATUS_PORT_NO_WWPN | \ - ZFCP_STATUS_PORT_NO_SCSI_ID) +/* well known address (WKA) port status*/ +enum zfcp_wka_status { + ZFCP_WKA_PORT_OFFLINE, + ZFCP_WKA_PORT_CLOSING, + ZFCP_WKA_PORT_OPENING, + ZFCP_WKA_PORT_ONLINE, +}; /* logical unit status */ #define ZFCP_STATUS_UNIT_SHARED 0x00000004 @@ -340,7 +343,7 @@ typedef void (*zfcp_send_ct_handler_t)(unsigned long); /** * struct zfcp_send_ct - used to pass parameters to function zfcp_fsf_send_ct - * @port: port where the request is sent to + * @wka_port: port where the request is sent to * @req: scatter-gather list for request * @resp: scatter-gather list for response * @req_count: number of elements in request scatter-gather list @@ -352,7 +355,7 @@ typedef void (*zfcp_send_ct_handler_t)(unsigned long); * @status: used to pass error status to calling function */ struct zfcp_send_ct { - struct zfcp_port *port; + struct zfcp_wka_port *wka_port; struct scatterlist *req; struct scatterlist *resp; unsigned int req_count; @@ -406,6 +409,17 @@ struct zfcp_send_els { int status; }; +struct zfcp_wka_port { + struct zfcp_adapter *adapter; + wait_queue_head_t completion_wq; + enum zfcp_wka_status status; + atomic_t refcount; + u32 d_id; + u32 handle; + struct mutex mutex; + struct delayed_work work; +}; + struct zfcp_qdio_queue { struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */ u8 first; /* index of next free bfr @@ -496,7 +510,7 @@ struct zfcp_adapter { actions */ u32 erp_low_mem_count; /* nr of erp actions waiting for memory */ - struct zfcp_port *nameserver_port; /* adapter's nameserver */ + struct zfcp_wka_port nsp; /* adapter's nameserver */ debug_info_t *rec_dbf; debug_info_t *hba_dbf; debug_info_t *san_dbf; /* debug feature areas */ @@ -540,6 +554,7 @@ struct zfcp_port { atomic_t erp_counter; u32 maxframe_size; u32 supported_classes; + struct work_struct gid_pn_work; }; struct zfcp_unit { diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index b18c6dd3729..e7d3bce5142 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -23,7 +23,6 @@ enum zfcp_erp_steps { ZFCP_ERP_STEP_FSF_XCONFIG = 0x0001, ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010, ZFCP_ERP_STEP_PORT_CLOSING = 0x0100, - ZFCP_ERP_STEP_NAMESERVER_OPEN = 0x0200, ZFCP_ERP_STEP_NAMESERVER_LOOKUP = 0x0400, ZFCP_ERP_STEP_PORT_OPENING = 0x0800, ZFCP_ERP_STEP_UNIT_CLOSING = 0x1000, @@ -532,8 +531,7 @@ static void _zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter, struct zfcp_port *port; list_for_each_entry(port, &adapter->port_list_head, list) - if (!(atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA)) - _zfcp_erp_port_reopen(port, clear, id, ref); + _zfcp_erp_port_reopen(port, clear, id, ref); } static void _zfcp_erp_unit_reopen_all(struct zfcp_port *port, int clear, u8 id, @@ -777,7 +775,6 @@ static int zfcp_erp_port_forced_strategy_close(struct zfcp_erp_action *act) static void zfcp_erp_port_strategy_clearstati(struct zfcp_port *port) { atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | - ZFCP_STATUS_PORT_DID_DID | ZFCP_STATUS_PORT_PHYS_CLOSING | ZFCP_STATUS_PORT_INVALID_WWPN, &port->status); @@ -830,62 +827,6 @@ static int zfcp_erp_port_strategy_open_port(struct zfcp_erp_action *erp_action) return ZFCP_ERP_CONTINUES; } -static void zfcp_erp_port_strategy_open_ns_wake(struct zfcp_erp_action *ns_act) -{ - unsigned long flags; - struct zfcp_adapter *adapter = ns_act->adapter; - struct zfcp_erp_action *act, *tmp; - int status; - - read_lock_irqsave(&adapter->erp_lock, flags); - list_for_each_entry_safe(act, tmp, &adapter->erp_running_head, list) { - if (act->step == ZFCP_ERP_STEP_NAMESERVER_OPEN) { - status = atomic_read(&adapter->nameserver_port->status); - if (status & ZFCP_STATUS_COMMON_ERP_FAILED) - zfcp_erp_port_failed(act->port, 27, NULL); - zfcp_erp_action_ready(act); - } - } - read_unlock_irqrestore(&adapter->erp_lock, flags); -} - -static int zfcp_erp_port_strategy_open_nameserver(struct zfcp_erp_action *act) -{ - int retval; - - switch (act->step) { - case ZFCP_ERP_STEP_UNINITIALIZED: - case ZFCP_ERP_STEP_PHYS_PORT_CLOSING: - case ZFCP_ERP_STEP_PORT_CLOSING: - return zfcp_erp_port_strategy_open_port(act); - - case ZFCP_ERP_STEP_PORT_OPENING: - if (atomic_read(&act->port->status) & ZFCP_STATUS_COMMON_OPEN) - retval = ZFCP_ERP_SUCCEEDED; - else - retval = ZFCP_ERP_FAILED; - /* this is needed anyway */ - zfcp_erp_port_strategy_open_ns_wake(act); - return retval; - - default: - return ZFCP_ERP_FAILED; - } -} - -static int zfcp_erp_port_strategy_open_lookup(struct zfcp_erp_action *act) -{ - int retval; - - retval = zfcp_fc_ns_gid_pn_request(act); - if (retval == -ENOMEM) - return ZFCP_ERP_NOMEM; - act->step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP; - if (retval) - return ZFCP_ERP_FAILED; - return ZFCP_ERP_CONTINUES; -} - static int zfcp_erp_open_ptp_port(struct zfcp_erp_action *act) { struct zfcp_adapter *adapter = act->adapter; @@ -900,11 +841,25 @@ static int zfcp_erp_open_ptp_port(struct zfcp_erp_action *act) return zfcp_erp_port_strategy_open_port(act); } +void zfcp_erp_port_strategy_open_lookup(struct work_struct *work) +{ + int retval; + struct zfcp_port *port = container_of(work, struct zfcp_port, + gid_pn_work); + + retval = zfcp_fc_ns_gid_pn(&port->erp_action); + if (retval == -ENOMEM) + zfcp_erp_notify(&port->erp_action, ZFCP_ERP_NOMEM); + port->erp_action.step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP; + if (retval) + zfcp_erp_notify(&port->erp_action, ZFCP_ERP_FAILED); + +} + static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act) { struct zfcp_adapter *adapter = act->adapter; struct zfcp_port *port = act->port; - struct zfcp_port *ns_port = adapter->nameserver_port; int p_status = atomic_read(&port->status); switch (act->step) { @@ -913,29 +868,10 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act) case ZFCP_ERP_STEP_PORT_CLOSING: if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_PTP) return zfcp_erp_open_ptp_port(act); - if (!ns_port) { - dev_err(&adapter->ccw_device->dev, - "Attaching the name server port to the " - "FCP device failed\n"); - return ZFCP_ERP_FAILED; - } - if (!(atomic_read(&ns_port->status) & - ZFCP_STATUS_COMMON_UNBLOCKED)) { - /* nameserver port may live again */ - atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING, - &ns_port->status); - if (zfcp_erp_port_reopen(ns_port, 0, 77, act) >= 0) { - act->step = ZFCP_ERP_STEP_NAMESERVER_OPEN; - return ZFCP_ERP_CONTINUES; - } - return ZFCP_ERP_FAILED; + if (!(p_status & ZFCP_STATUS_PORT_DID_DID)) { + schedule_work(&port->gid_pn_work); + return ZFCP_ERP_CONTINUES; } - /* else nameserver port is already open, fall through */ - case ZFCP_ERP_STEP_NAMESERVER_OPEN: - if (!(atomic_read(&ns_port->status) & ZFCP_STATUS_COMMON_OPEN)) - return ZFCP_ERP_FAILED; - return zfcp_erp_port_strategy_open_lookup(act); - case ZFCP_ERP_STEP_NAMESERVER_LOOKUP: if (!(p_status & ZFCP_STATUS_PORT_DID_DID)) { if (p_status & (ZFCP_STATUS_PORT_INVALID_WWPN)) { @@ -948,25 +884,26 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act) case ZFCP_ERP_STEP_PORT_OPENING: /* D_ID might have changed during open */ - if ((p_status & ZFCP_STATUS_COMMON_OPEN) && - (p_status & ZFCP_STATUS_PORT_DID_DID)) - return ZFCP_ERP_SUCCEEDED; + if (p_status & ZFCP_STATUS_COMMON_OPEN) { + if (p_status & ZFCP_STATUS_PORT_DID_DID) + return ZFCP_ERP_SUCCEEDED; + else { + act->step = ZFCP_ERP_STEP_PORT_CLOSING; + return ZFCP_ERP_CONTINUES; + } /* fall through otherwise */ + } } return ZFCP_ERP_FAILED; } -static int zfcp_erp_port_strategy_open(struct zfcp_erp_action *act) -{ - if (atomic_read(&act->port->status) & (ZFCP_STATUS_PORT_WKA)) - return zfcp_erp_port_strategy_open_nameserver(act); - return zfcp_erp_port_strategy_open_common(act); -} - static int zfcp_erp_port_strategy(struct zfcp_erp_action *erp_action) { struct zfcp_port *port = erp_action->port; + if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC) + goto close_init_done; + switch (erp_action->step) { case ZFCP_ERP_STEP_UNINITIALIZED: zfcp_erp_port_strategy_clearstati(port); @@ -979,12 +916,12 @@ static int zfcp_erp_port_strategy(struct zfcp_erp_action *erp_action) return ZFCP_ERP_FAILED; break; } + +close_init_done: if (erp_action->status & ZFCP_STATUS_ERP_CLOSE_ONLY) return ZFCP_ERP_EXIT; - else - return zfcp_erp_port_strategy_open(erp_action); - return ZFCP_ERP_FAILED; + return zfcp_erp_port_strategy_open_common(erp_action); } static void zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *unit) @@ -1296,12 +1233,10 @@ static void zfcp_erp_rport_register(struct zfcp_port *port) static void zfcp_erp_rports_del(struct zfcp_adapter *adapter) { struct zfcp_port *port; - list_for_each_entry(port, &adapter->port_list_head, list) - if (port->rport && !(atomic_read(&port->status) & - ZFCP_STATUS_PORT_WKA)) { - fc_remote_port_delete(port->rport); - port->rport = NULL; - } + list_for_each_entry(port, &adapter->port_list_head, list) { + fc_remote_port_delete(port->rport); + port->rport = NULL; + } } static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result) @@ -1737,9 +1672,8 @@ static void zfcp_erp_port_access_changed(struct zfcp_port *port, u8 id, if (!(status & (ZFCP_STATUS_COMMON_ACCESS_DENIED | ZFCP_STATUS_COMMON_ACCESS_BOXED))) { - if (!(status & ZFCP_STATUS_PORT_WKA)) - list_for_each_entry(unit, &port->unit_list_head, list) - zfcp_erp_unit_access_changed(unit, id, ref); + list_for_each_entry(unit, &port->unit_list_head, list) + zfcp_erp_unit_access_changed(unit, id, ref); return; } @@ -1762,10 +1696,7 @@ void zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter, u8 id, return; read_lock_irqsave(&zfcp_data.config_lock, flags); - if (adapter->nameserver_port) - zfcp_erp_port_access_changed(adapter->nameserver_port, id, ref); list_for_each_entry(port, &adapter->port_list_head, list) - if (port != adapter->nameserver_port) - zfcp_erp_port_access_changed(port, id, ref); + zfcp_erp_port_access_changed(port, id, ref); read_unlock_irqrestore(&zfcp_data.config_lock, flags); } diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h index a8dd105dc08..5c8a703b5ce 100644 --- a/drivers/s390/scsi/zfcp_ext.h +++ b/drivers/s390/scsi/zfcp_ext.h @@ -91,17 +91,21 @@ extern void zfcp_erp_port_access_denied(struct zfcp_port *, u8, void *); extern void zfcp_erp_unit_access_denied(struct zfcp_unit *, u8, void *); extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *, u8, void *); extern void zfcp_erp_timeout_handler(unsigned long); +extern void zfcp_erp_port_strategy_open_lookup(struct work_struct *); /* zfcp_fc.c */ extern int zfcp_scan_ports(struct zfcp_adapter *); extern void _zfcp_scan_ports_later(struct work_struct *); extern void zfcp_fc_incoming_els(struct zfcp_fsf_req *); -extern int zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *); +extern int zfcp_fc_ns_gid_pn(struct zfcp_erp_action *); extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *); extern void zfcp_test_link(struct zfcp_port *); +extern void zfcp_fc_nameserver_init(struct zfcp_adapter *); /* zfcp_fsf.c */ extern int zfcp_fsf_open_port(struct zfcp_erp_action *); +extern int zfcp_fsf_open_wka_port(struct zfcp_wka_port *); +extern int zfcp_fsf_close_wka_port(struct zfcp_wka_port *); extern int zfcp_fsf_close_port(struct zfcp_erp_action *); extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *); extern int zfcp_fsf_open_unit(struct zfcp_erp_action *); @@ -153,7 +157,6 @@ extern struct fc_function_template zfcp_transport_functions; /* zfcp_sysfs.c */ extern struct attribute_group zfcp_sysfs_unit_attrs; extern struct attribute_group zfcp_sysfs_adapter_attrs; -extern struct attribute_group zfcp_sysfs_ns_port_attrs; extern struct attribute_group zfcp_sysfs_port_attrs; extern struct device_attribute *zfcp_sysfs_sdev_attrs[]; extern struct device_attribute *zfcp_sysfs_shost_attrs[]; diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 44456f74a12..899e45b9e60 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -39,6 +39,84 @@ struct zfcp_gpn_ft { struct scatterlist sg_resp[ZFCP_GPN_FT_BUFFERS]; }; +struct zfcp_fc_ns_handler_data { + struct completion done; + void (*handler)(unsigned long); + unsigned long handler_data; +}; + +static int zfcp_wka_port_get(struct zfcp_wka_port *wka_port) +{ + if (mutex_lock_interruptible(&wka_port->mutex)) + return -ERESTARTSYS; + + if (wka_port->status != ZFCP_WKA_PORT_ONLINE) { + wka_port->status = ZFCP_WKA_PORT_OPENING; + if (zfcp_fsf_open_wka_port(wka_port)) + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + } + + mutex_unlock(&wka_port->mutex); + + wait_event_timeout( + wka_port->completion_wq, + wka_port->status == ZFCP_WKA_PORT_ONLINE || + wka_port->status == ZFCP_WKA_PORT_OFFLINE, + HZ >> 1); + + if (wka_port->status == ZFCP_WKA_PORT_ONLINE) { + atomic_inc(&wka_port->refcount); + return 0; + } + return -EIO; +} + +static void zfcp_wka_port_offline(struct work_struct *work) +{ + struct delayed_work *dw = container_of(work, struct delayed_work, work); + struct zfcp_wka_port *wka_port = + container_of(dw, struct zfcp_wka_port, work); + + wait_event(wka_port->completion_wq, + atomic_read(&wka_port->refcount) == 0); + + mutex_lock(&wka_port->mutex); + if ((atomic_read(&wka_port->refcount) != 0) || + (wka_port->status != ZFCP_WKA_PORT_ONLINE)) + goto out; + + wka_port->status = ZFCP_WKA_PORT_CLOSING; + if (zfcp_fsf_close_wka_port(wka_port)) { + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + wake_up(&wka_port->completion_wq); + } +out: + mutex_unlock(&wka_port->mutex); +} + +static void zfcp_wka_port_put(struct zfcp_wka_port *wka_port) +{ + if (atomic_dec_return(&wka_port->refcount) != 0) + return; + /* wait 10 miliseconds, other reqs might pop in */ + schedule_delayed_work(&wka_port->work, HZ / 100); +} + +void zfcp_fc_nameserver_init(struct zfcp_adapter *adapter) +{ + struct zfcp_wka_port *wka_port = &adapter->nsp; + + init_waitqueue_head(&wka_port->completion_wq); + + wka_port->adapter = adapter; + wka_port->d_id = ZFCP_DID_DIRECTORY_SERVICE; + + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + atomic_set(&wka_port->refcount, 0); + mutex_init(&wka_port->mutex); + INIT_DELAYED_WORK(&wka_port->work, zfcp_wka_port_offline); +} + static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, struct fcp_rscn_element *elem) { @@ -47,9 +125,6 @@ static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, read_lock_irqsave(&zfcp_data.config_lock, flags); list_for_each_entry(port, &fsf_req->adapter->port_list_head, list) { - if ((atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA) == - ZFCP_STATUS_PORT_WKA) - continue; /* FIXME: ZFCP_STATUS_PORT_DID_DID check is racy */ if (!(atomic_read(&port->status) & ZFCP_STATUS_PORT_DID_DID)) /* Try to connect to unused ports anyway. */ @@ -158,7 +233,18 @@ void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req) zfcp_fc_incoming_rscn(fsf_req); } -static void zfcp_ns_gid_pn_handler(unsigned long data) +static void zfcp_fc_ns_handler(unsigned long data) +{ + struct zfcp_fc_ns_handler_data *compl_rec = + (struct zfcp_fc_ns_handler_data *) data; + + if (compl_rec->handler) + compl_rec->handler(compl_rec->handler_data); + + complete(&compl_rec->done); +} + +static void zfcp_fc_ns_gid_pn_eval(unsigned long data) { struct zfcp_gid_pn_data *gid_pn = (struct zfcp_gid_pn_data *) data; struct zfcp_send_ct *ct = &gid_pn->ct; @@ -167,43 +253,31 @@ static void zfcp_ns_gid_pn_handler(unsigned long data) struct zfcp_port *port = gid_pn->port; if (ct->status) - goto out; + return; if (ct_iu_resp->header.cmd_rsp_code != ZFCP_CT_ACCEPT) { atomic_set_mask(ZFCP_STATUS_PORT_INVALID_WWPN, &port->status); - goto out; + return; } /* paranoia */ if (ct_iu_req->wwpn != port->wwpn) - goto out; + return; /* looks like a valid d_id */ port->d_id = ct_iu_resp->d_id & ZFCP_DID_MASK; atomic_set_mask(ZFCP_STATUS_PORT_DID_DID, &port->status); -out: - mempool_free(gid_pn, port->adapter->pool.data_gid_pn); } -/** - * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request - * @erp_action: pointer to zfcp_erp_action where GID_PN request is needed - * return: -ENOMEM on error, 0 otherwise - */ -int zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action) +int static zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action, + struct zfcp_gid_pn_data *gid_pn) { - int ret; - struct zfcp_gid_pn_data *gid_pn; struct zfcp_adapter *adapter = erp_action->adapter; - - gid_pn = mempool_alloc(adapter->pool.data_gid_pn, GFP_ATOMIC); - if (!gid_pn) - return -ENOMEM; - - memset(gid_pn, 0, sizeof(*gid_pn)); + struct zfcp_fc_ns_handler_data compl_rec; + int ret; /* setup parameters for send generic command */ gid_pn->port = erp_action->port; - gid_pn->ct.port = adapter->nameserver_port; - gid_pn->ct.handler = zfcp_ns_gid_pn_handler; - gid_pn->ct.handler_data = (unsigned long) gid_pn; + gid_pn->ct.wka_port = &adapter->nsp; + gid_pn->ct.handler = zfcp_fc_ns_handler; + gid_pn->ct.handler_data = (unsigned long) &compl_rec; gid_pn->ct.timeout = ZFCP_NS_GID_PN_TIMEOUT; gid_pn->ct.req = &gid_pn->req; gid_pn->ct.resp = &gid_pn->resp; @@ -223,10 +297,42 @@ int zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action) gid_pn->ct_iu_req.header.max_res_size = ZFCP_CT_MAX_SIZE; gid_pn->ct_iu_req.wwpn = erp_action->port->wwpn; + init_completion(&compl_rec.done); + compl_rec.handler = zfcp_fc_ns_gid_pn_eval; + compl_rec.handler_data = (unsigned long) gid_pn; ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.fsf_req_erp, erp_action); + if (!ret) + wait_for_completion(&compl_rec.done); + return ret; +} + +/** + * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request + * @erp_action: pointer to zfcp_erp_action where GID_PN request is needed + * return: -ENOMEM on error, 0 otherwise + */ +int zfcp_fc_ns_gid_pn(struct zfcp_erp_action *erp_action) +{ + int ret; + struct zfcp_gid_pn_data *gid_pn; + struct zfcp_adapter *adapter = erp_action->adapter; + + gid_pn = mempool_alloc(adapter->pool.data_gid_pn, GFP_ATOMIC); + if (!gid_pn) + return -ENOMEM; + + memset(gid_pn, 0, sizeof(*gid_pn)); + + ret = zfcp_wka_port_get(&adapter->nsp); if (ret) - mempool_free(gid_pn, adapter->pool.data_gid_pn); + goto out; + + ret = zfcp_fc_ns_gid_pn_request(erp_action, gid_pn); + + zfcp_wka_port_put(&adapter->nsp); +out: + mempool_free(gid_pn, adapter->pool.data_gid_pn); return ret; } @@ -339,30 +445,6 @@ void zfcp_test_link(struct zfcp_port *port) zfcp_erp_port_forced_reopen(port, 0, 65, NULL); } -static int zfcp_scan_get_nameserver(struct zfcp_adapter *adapter) -{ - int ret; - - if (!adapter->nameserver_port) - return -EINTR; - - if (!(atomic_read(&adapter->nameserver_port->status) & - ZFCP_STATUS_COMMON_UNBLOCKED)) { - ret = zfcp_erp_port_reopen(adapter->nameserver_port, 0, 148, - NULL); - if (ret) - return ret; - zfcp_erp_wait(adapter); - } - return !(atomic_read(&adapter->nameserver_port->status) & - ZFCP_STATUS_COMMON_UNBLOCKED); -} - -static void zfcp_gpn_ft_handler(unsigned long _done) -{ - complete((struct completion *)_done); -} - static void zfcp_free_sg_env(struct zfcp_gpn_ft *gpn_ft) { struct scatterlist *sg = &gpn_ft->sg_req; @@ -404,7 +486,7 @@ static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft, { struct zfcp_send_ct *ct = &gpn_ft->ct; struct ct_iu_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req); - struct completion done; + struct zfcp_fc_ns_handler_data compl_rec; int ret; /* prepare CT IU for GPN_FT */ @@ -421,19 +503,20 @@ static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft, req->fc4_type = ZFCP_CT_SCSI_FCP; /* prepare zfcp_send_ct */ - ct->port = adapter->nameserver_port; - ct->handler = zfcp_gpn_ft_handler; - ct->handler_data = (unsigned long)&done; + ct->wka_port = &adapter->nsp; + ct->handler = zfcp_fc_ns_handler; + ct->handler_data = (unsigned long)&compl_rec; ct->timeout = 10; ct->req = &gpn_ft->sg_req; ct->resp = gpn_ft->sg_resp; ct->req_count = 1; ct->resp_count = ZFCP_GPN_FT_BUFFERS; - init_completion(&done); + init_completion(&compl_rec.done); + compl_rec.handler = NULL; ret = zfcp_fsf_send_ct(ct, NULL, NULL); if (!ret) - wait_for_completion(&done); + wait_for_completion(&compl_rec.done); return ret; } @@ -443,8 +526,6 @@ static void zfcp_validate_port(struct zfcp_port *port) atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status); - if (port == adapter->nameserver_port) - return; if ((port->supported_classes != 0) || (port->units != 0)) { zfcp_port_put(port); return; @@ -461,7 +542,7 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft) struct scatterlist *sg = gpn_ft->sg_resp; struct ct_hdr *hdr = sg_virt(sg); struct gpn_ft_resp_acc *acc = sg_virt(sg); - struct zfcp_adapter *adapter = ct->port->adapter; + struct zfcp_adapter *adapter = ct->wka_port->adapter; struct zfcp_port *port, *tmp; u32 d_id; int ret = 0, x, last = 0; @@ -491,6 +572,9 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft) d_id = acc->port_id[0] << 16 | acc->port_id[1] << 8 | acc->port_id[2]; + /* don't attach ports with a well known address */ + if ((d_id & ZFCP_DID_WKA) == ZFCP_DID_WKA) + continue; /* skip the adapter's port and known remote ports */ if (acc->wwpn == fc_host_port_name(adapter->scsi_host)) continue; @@ -529,13 +613,15 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter) if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT) return 0; - ret = zfcp_scan_get_nameserver(adapter); + ret = zfcp_wka_port_get(&adapter->nsp); if (ret) return ret; gpn_ft = zfcp_alloc_sg_env(); - if (!gpn_ft) - return -ENOMEM; + if (!gpn_ft) { + ret = -ENOMEM; + goto out; + } for (i = 0; i < 3; i++) { ret = zfcp_scan_issue_gpn_ft(gpn_ft, adapter); @@ -548,7 +634,8 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter) } } zfcp_free_sg_env(gpn_ft); - +out: + zfcp_wka_port_put(&adapter->nsp); return ret; } diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index af75fd2ef1e..23dd9088153 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -961,7 +961,6 @@ static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) { struct zfcp_adapter *adapter = req->adapter; struct zfcp_send_ct *send_ct = req->data; - struct zfcp_port *port = send_ct->port; struct fsf_qtcb_header *header = &req->qtcb->header; send_ct->status = -EINVAL; @@ -980,17 +979,14 @@ static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) case FSF_ADAPTER_STATUS_AVAILABLE: switch (header->fsf_status_qual.word[0]){ case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: - zfcp_test_link(port); case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; } break; case FSF_ACCESS_DENIED: - zfcp_fsf_access_denied_port(req, port); break; case FSF_PORT_BOXED: - zfcp_erp_port_boxed(port, 49, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR | ZFCP_STATUS_FSFREQ_RETRY; break; @@ -1041,8 +1037,8 @@ static int zfcp_fsf_setup_sbals(struct zfcp_fsf_req *req, int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, struct zfcp_erp_action *erp_action) { - struct zfcp_port *port = ct->port; - struct zfcp_adapter *adapter = port->adapter; + struct zfcp_wka_port *wka_port = ct->wka_port; + struct zfcp_adapter *adapter = wka_port->adapter; struct zfcp_fsf_req *req; int ret = -EIO; @@ -1063,7 +1059,7 @@ int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, goto failed_send; req->handler = zfcp_fsf_send_ct_handler; - req->qtcb->header.port_handle = port->handle; + req->qtcb->header.port_handle = wka_port->handle; req->qtcb->bottom.support.service_class = FSF_CLASS_3; req->qtcb->bottom.support.timeout = ct->timeout; req->data = ct; @@ -1435,9 +1431,6 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) * another GID_PN straight after a port has been opened. * Alternately, an ADISC/PDISC ELS should suffice, as well. */ - if (atomic_read(&port->status) & ZFCP_STATUS_PORT_NO_WWPN) - break; - plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; if (req->qtcb->bottom.support.els1_length >= sizeof(*plogi)) { if (plogi->serv_param.wwpn != port->wwpn) @@ -1568,6 +1561,130 @@ out: return retval; } +static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) +{ + struct zfcp_wka_port *wka_port = req->data; + struct fsf_qtcb_header *header = &req->qtcb->header; + + if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + goto out; + } + + switch (header->fsf_status) { + case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: + dev_warn(&req->adapter->ccw_device->dev, + "Opening WKA port 0x%x failed\n", wka_port->d_id); + case FSF_ADAPTER_STATUS_AVAILABLE: + req->status |= ZFCP_STATUS_FSFREQ_ERROR; + case FSF_ACCESS_DENIED: + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + break; + case FSF_PORT_ALREADY_OPEN: + case FSF_GOOD: + wka_port->handle = header->port_handle; + wka_port->status = ZFCP_WKA_PORT_ONLINE; + } +out: + wake_up(&wka_port->completion_wq); +} + +/** + * zfcp_fsf_open_wka_port - create and send open wka-port request + * @wka_port: pointer to struct zfcp_wka_port + * Returns: 0 on success, error otherwise + */ +int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) +{ + struct qdio_buffer_element *sbale; + struct zfcp_adapter *adapter = wka_port->adapter; + struct zfcp_fsf_req *req; + int retval = -EIO; + + spin_lock_bh(&adapter->req_q.lock); + if (zfcp_fsf_req_sbal_get(adapter)) + goto out; + + req = zfcp_fsf_req_create(adapter, + FSF_QTCB_OPEN_PORT_WITH_DID, + ZFCP_REQ_AUTO_CLEANUP, + adapter->pool.fsf_req_erp); + if (unlikely(IS_ERR(req))) { + retval = PTR_ERR(req); + goto out; + } + + sbale = zfcp_qdio_sbale_req(req); + sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; + sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; + + req->handler = zfcp_fsf_open_wka_port_handler; + req->qtcb->bottom.support.d_id = wka_port->d_id; + req->data = wka_port; + + zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); + retval = zfcp_fsf_req_send(req); + if (retval) + zfcp_fsf_req_free(req); +out: + spin_unlock_bh(&adapter->req_q.lock); + return retval; +} + +static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) +{ + struct zfcp_wka_port *wka_port = req->data; + + if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { + req->status |= ZFCP_STATUS_FSFREQ_ERROR; + zfcp_erp_adapter_reopen(wka_port->adapter, 0, 107, req); + } + + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + wake_up(&wka_port->completion_wq); +} + +/** + * zfcp_fsf_close_wka_port - create and send close wka port request + * @erp_action: pointer to struct zfcp_erp_action + * Returns: 0 on success, error otherwise + */ +int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) +{ + struct qdio_buffer_element *sbale; + struct zfcp_adapter *adapter = wka_port->adapter; + struct zfcp_fsf_req *req; + int retval = -EIO; + + spin_lock_bh(&adapter->req_q.lock); + if (zfcp_fsf_req_sbal_get(adapter)) + goto out; + + req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, + ZFCP_REQ_AUTO_CLEANUP, + adapter->pool.fsf_req_erp); + if (unlikely(IS_ERR(req))) { + retval = PTR_ERR(req); + goto out; + } + + sbale = zfcp_qdio_sbale_req(req); + sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; + sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; + + req->handler = zfcp_fsf_close_wka_port_handler; + req->data = wka_port; + req->qtcb->header.port_handle = wka_port->handle; + + zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); + retval = zfcp_fsf_req_send(req); + if (retval) + zfcp_fsf_req_free(req); +out: + spin_unlock_bh(&adapter->req_q.lock); + return retval; +} + static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) { struct zfcp_port *port = req->data; diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index 7e857571fe4..430e486e918 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -273,22 +273,7 @@ out: } static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); -static struct attribute *zfcp_port_ns_attrs[] = { - &dev_attr_port_failed.attr, - &dev_attr_port_in_recovery.attr, - &dev_attr_port_status.attr, - &dev_attr_port_access_denied.attr, - NULL -}; - -/** - * zfcp_sysfs_ns_port_attrs - sysfs attributes for nameserver - */ -struct attribute_group zfcp_sysfs_ns_port_attrs = { - .attrs = zfcp_port_ns_attrs, -}; - -static struct attribute *zfcp_port_no_ns_attrs[] = { +static struct attribute *zfcp_port_attrs[] = { &dev_attr_unit_add.attr, &dev_attr_unit_remove.attr, &dev_attr_port_failed.attr, @@ -302,7 +287,7 @@ static struct attribute *zfcp_port_no_ns_attrs[] = { * zfcp_sysfs_port_attrs - sysfs attributes for all other ports */ struct attribute_group zfcp_sysfs_port_attrs = { - .attrs = zfcp_port_no_ns_attrs, + .attrs = zfcp_port_attrs, }; static struct attribute *zfcp_unit_attrs[] = { -- cgit v1.2.3 From 7ba58c9cc16d296290fe645acb11db2b01276544 Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Wed, 1 Oct 2008 12:42:18 +0200 Subject: [SCSI] zfcp: remove all typedefs and replace them with standards Remove typedefs from zfcp, use already existing types instead. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_aux.c | 21 ++++++++++------- drivers/s390/scsi/zfcp_def.h | 39 ++++++++++++------------------- drivers/s390/scsi/zfcp_erp.c | 10 ++++---- drivers/s390/scsi/zfcp_ext.h | 11 ++++----- drivers/s390/scsi/zfcp_fc.c | 2 +- drivers/s390/scsi/zfcp_fsf.c | 53 ++++++++++++++++++++++++++++++------------ drivers/s390/scsi/zfcp_scsi.c | 14 ----------- drivers/s390/scsi/zfcp_sysfs.c | 22 ++++++++++-------- 8 files changed, 88 insertions(+), 84 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 181f88bb53b..811ce8a2825 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -88,11 +88,13 @@ static int __init zfcp_device_setup(char *devstr) strncpy(zfcp_data.init_busid, token, BUS_ID_SIZE); token = strsep(&str, ","); - if (!token || strict_strtoull(token, 0, &zfcp_data.init_wwpn)) + if (!token || strict_strtoull(token, 0, + (unsigned long long *) &zfcp_data.init_wwpn)) goto err_out; token = strsep(&str, ","); - if (!token || strict_strtoull(token, 0, &zfcp_data.init_fcp_lun)) + if (!token || strict_strtoull(token, 0, + (unsigned long long *) &zfcp_data.init_fcp_lun)) goto err_out; kfree(str); @@ -231,8 +233,7 @@ module_init(zfcp_module_init); * * Returns: pointer to zfcp_unit or NULL */ -struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *port, - fcp_lun_t fcp_lun) +struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *port, u64 fcp_lun) { struct zfcp_unit *unit; @@ -251,7 +252,7 @@ struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *port, * Returns: pointer to zfcp_port or NULL */ struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *adapter, - wwn_t wwpn) + u64 wwpn) { struct zfcp_port *port; @@ -276,7 +277,7 @@ static void zfcp_sysfs_unit_release(struct device *dev) * * Sets up some unit internal structures and creates sysfs entry. */ -struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun) +struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) { struct zfcp_unit *unit; @@ -290,7 +291,8 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun) unit->port = port; unit->fcp_lun = fcp_lun; - snprintf(unit->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", fcp_lun); + snprintf(unit->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", + (unsigned long long) fcp_lun); unit->sysfs_device.parent = &port->sysfs_device; unit->sysfs_device.release = zfcp_sysfs_unit_release; dev_set_drvdata(&unit->sysfs_device, unit); @@ -620,7 +622,7 @@ static void zfcp_sysfs_port_release(struct device *dev) * d_id is used to enqueue ports with a well known address like the Directory * Service for nameserver lookup. */ -struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, +struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, u32 status, u32 d_id) { struct zfcp_port *port; @@ -644,7 +646,8 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status); atomic_set(&port->refcount, 0); - snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", wwpn); + snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", + (unsigned long long) wwpn); port->sysfs_device.parent = &adapter->ccw_device->dev; port->sysfs_device.release = zfcp_sysfs_port_release; diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 0d6a388882d..cbbfd875d93 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -78,11 +78,6 @@ /*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/ -typedef unsigned long long wwn_t; -typedef unsigned long long fcp_lun_t; -/* data length field may be at variable position in FCP-2 FCP_CMND IU */ -typedef unsigned int fcp_dl_t; - /* timeout for name-server lookup (in seconds) */ #define ZFCP_NS_GID_PN_TIMEOUT 10 @@ -106,7 +101,7 @@ typedef unsigned int fcp_dl_t; /* FCP(-2) FCP_CMND IU */ struct fcp_cmnd_iu { - fcp_lun_t fcp_lun; /* FCP logical unit number */ + u64 fcp_lun; /* FCP logical unit number */ u8 crn; /* command reference number */ u8 reserved0:5; /* reserved */ u8 task_attribute:3; /* task attribute */ @@ -181,7 +176,7 @@ struct fcp_rscn_element { struct fcp_logo { u32 command; u32 nport_did; - wwn_t nport_wwpn; + u64 nport_wwpn; } __attribute__((packed)); /* @@ -330,7 +325,7 @@ struct ct_hdr { * a port name is required */ struct ct_iu_gid_pn_req { struct ct_hdr header; - wwn_t wwpn; + u64 wwpn; } __attribute__ ((packed)); /* FS_ACC IU and data unit for GID_PN nameserver request */ @@ -339,8 +334,6 @@ struct ct_iu_gid_pn_resp { u32 d_id; } __attribute__ ((packed)); -typedef void (*zfcp_send_ct_handler_t)(unsigned long); - /** * struct zfcp_send_ct - used to pass parameters to function zfcp_fsf_send_ct * @wka_port: port where the request is sent to @@ -360,7 +353,7 @@ struct zfcp_send_ct { struct scatterlist *resp; unsigned int req_count; unsigned int resp_count; - zfcp_send_ct_handler_t handler; + void (*handler)(unsigned long); unsigned long handler_data; int timeout; struct completion *completion; @@ -377,8 +370,6 @@ struct zfcp_gid_pn_data { struct zfcp_port *port; }; -typedef void (*zfcp_send_els_handler_t)(unsigned long); - /** * struct zfcp_send_els - used to pass parameters to function zfcp_fsf_send_els * @adapter: adapter where request is sent from @@ -402,7 +393,7 @@ struct zfcp_send_els { struct scatterlist *resp; unsigned int req_count; unsigned int resp_count; - zfcp_send_els_handler_t handler; + void (*handler)(unsigned long); unsigned long handler_data; struct completion *completion; int ls_code; @@ -468,8 +459,8 @@ struct zfcp_adapter { atomic_t refcount; /* reference count */ wait_queue_head_t remove_wq; /* can be used to wait for refcount drop to zero */ - wwn_t peer_wwnn; /* P2P peer WWNN */ - wwn_t peer_wwpn; /* P2P peer WWPN */ + u64 peer_wwnn; /* P2P peer WWNN */ + u64 peer_wwpn; /* P2P peer WWPN */ u32 peer_d_id; /* P2P peer D_ID */ struct ccw_device *ccw_device; /* S/390 ccw device */ u32 hydra_version; /* Hydra version */ @@ -546,8 +537,8 @@ struct zfcp_port { list */ u32 units; /* # of logical units in list */ atomic_t status; /* status of this remote port */ - wwn_t wwnn; /* WWNN if known */ - wwn_t wwpn; /* WWPN */ + u64 wwnn; /* WWNN if known */ + u64 wwpn; /* WWPN */ u32 d_id; /* D_ID */ u32 handle; /* handle assigned by FSF */ struct zfcp_erp_action erp_action; /* pending error recovery */ @@ -566,7 +557,7 @@ struct zfcp_unit { struct zfcp_port *port; /* remote port of unit */ atomic_t status; /* status of this logical unit */ unsigned int scsi_lun; /* own SCSI LUN */ - fcp_lun_t fcp_lun; /* own FCP_LUN */ + u64 fcp_lun; /* own FCP_LUN */ u32 handle; /* handle assigned by FSF */ struct scsi_device *device; /* scsi device struct pointer */ struct zfcp_erp_action erp_action; /* pending error recovery */ @@ -620,11 +611,11 @@ struct zfcp_data { changes */ atomic_t loglevel; /* current loglevel */ char init_busid[BUS_ID_SIZE]; - wwn_t init_wwpn; - fcp_lun_t init_fcp_lun; - struct kmem_cache *fsf_req_qtcb_cache; - struct kmem_cache *sr_buffer_cache; - struct kmem_cache *gid_pn_cache; + u64 init_wwpn; + u64 init_fcp_lun; + struct kmem_cache *fsf_req_qtcb_cache; + struct kmem_cache *sr_buffer_cache; + struct kmem_cache *gid_pn_cache; }; /* struct used by memory pools for fsf_requests */ diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index e7d3bce5142..07d22f343cc 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -991,7 +991,8 @@ static int zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result) dev_err(&unit->port->adapter->ccw_device->dev, "ERP failed for unit 0x%016Lx on " "port 0x%016Lx\n", - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_unit_failed(unit, 21, NULL); } break; @@ -1021,7 +1022,7 @@ static int zfcp_erp_strategy_check_port(struct zfcp_port *port, int result) if (atomic_read(&port->erp_counter) > ZFCP_MAX_ERPS) { dev_err(&port->adapter->ccw_device->dev, "ERP failed for remote port 0x%016Lx\n", - port->wwpn); + (unsigned long long)port->wwpn); zfcp_erp_port_failed(port, 22, NULL); } break; @@ -1199,7 +1200,8 @@ static void zfcp_erp_schedule_work(struct zfcp_unit *unit) if (!p) { dev_err(&unit->port->adapter->ccw_device->dev, "Registering unit 0x%016Lx on port 0x%016Lx failed\n", - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); return; } @@ -1221,7 +1223,7 @@ static void zfcp_erp_rport_register(struct zfcp_port *port) if (!port->rport) { dev_err(&port->adapter->ccw_device->dev, "Registering port 0x%016Lx failed\n", - port->wwpn); + (unsigned long long)port->wwpn); return; } diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h index 5c8a703b5ce..ca1db974fc5 100644 --- a/drivers/s390/scsi/zfcp_ext.h +++ b/drivers/s390/scsi/zfcp_ext.h @@ -12,16 +12,14 @@ #include "zfcp_def.h" /* zfcp_aux.c */ -extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, - fcp_lun_t); -extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, - wwn_t); +extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, u64); +extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, u64); extern int zfcp_adapter_enqueue(struct ccw_device *); extern void zfcp_adapter_dequeue(struct zfcp_adapter *); -extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, wwn_t, u32, +extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, u64, u32, u32); extern void zfcp_port_dequeue(struct zfcp_port *); -extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, fcp_lun_t); +extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, u64); extern void zfcp_unit_dequeue(struct zfcp_unit *); extern int zfcp_reqlist_isempty(struct zfcp_adapter *); extern void zfcp_sg_free_table(struct scatterlist *, int); @@ -150,7 +148,6 @@ extern void zfcp_qdio_close(struct zfcp_adapter *); extern struct zfcp_data zfcp_data; extern int zfcp_adapter_scsi_register(struct zfcp_adapter *); extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *); -extern void zfcp_set_fcp_dl(struct fcp_cmnd_iu *, fcp_dl_t); extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *); extern struct fc_function_template zfcp_transport_functions; diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 899e45b9e60..3a573b03eb8 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -178,7 +178,7 @@ static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req) schedule_work(&fsf_req->adapter->scan_work); } -static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, wwn_t wwpn) +static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, u64 wwpn) { struct zfcp_adapter *adapter = req->adapter; struct zfcp_port *port; diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 23dd9088153..02a570084d8 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -68,7 +68,7 @@ static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, struct fsf_qtcb_header *header = &req->qtcb->header; dev_warn(&req->adapter->ccw_device->dev, "Access denied to port 0x%016Lx\n", - port->wwpn); + (unsigned long long)port->wwpn); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); zfcp_erp_port_access_denied(port, 55, req); @@ -81,7 +81,8 @@ static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, struct fsf_qtcb_header *header = &req->qtcb->header; dev_warn(&req->adapter->ccw_device->dev, "Access denied to unit 0x%016Lx on port 0x%016Lx\n", - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); zfcp_erp_unit_access_denied(unit, 59, req); @@ -1390,7 +1391,8 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: dev_warn(&req->adapter->ccw_device->dev, "Not enough FCP adapter resources to open " - "remote port 0x%016Lx\n", port->wwpn); + "remote port 0x%016Lx\n", + (unsigned long long)port->wwpn); zfcp_erp_port_failed(port, 31, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; @@ -1403,7 +1405,7 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) case FSF_SQ_NO_RETRY_POSSIBLE: dev_warn(&req->adapter->ccw_device->dev, "Remote port 0x%016Lx could not be opened\n", - port->wwpn); + (unsigned long long)port->wwpn); zfcp_erp_port_failed(port, 32, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; @@ -1824,8 +1826,8 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) dev_warn(&adapter->ccw_device->dev, "LUN 0x%Lx on port 0x%Lx is already in " "use by CSS%d, MIF Image ID %x\n", - unit->fcp_lun, - unit->port->wwpn, + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn, queue_designator->cssid, queue_designator->hla); else @@ -1840,7 +1842,8 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) dev_warn(&adapter->ccw_device->dev, "No handle is available for LUN " "0x%016Lx on port 0x%016Lx\n", - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_unit_failed(unit, 34, req); /* fall through */ case FSF_INVALID_COMMAND_OPTION: @@ -1879,7 +1882,8 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) dev_info(&adapter->ccw_device->dev, "SCSI device at LUN 0x%016Lx on port " "0x%016Lx opened read-only\n", - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); } if (exclusive && !readwrite) { @@ -1887,7 +1891,8 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) "Exclusive read-only access not " "supported (unit 0x%016Lx, " "port 0x%016Lx)\n", - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_unit_failed(unit, 35, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; zfcp_erp_unit_shutdown(unit, 0, 80, req); @@ -1896,7 +1901,8 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) "Shared read-write access not " "supported (unit 0x%016Lx, port " "0x%016Lx\n)", - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_unit_failed(unit, 36, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; zfcp_erp_unit_shutdown(unit, 0, 81, req); @@ -2197,7 +2203,8 @@ static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) "Incorrect direction %d, unit 0x%016Lx on port " "0x%016Lx closed\n", req->qtcb->bottom.io.data_direction, - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; @@ -2206,7 +2213,8 @@ static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) "Incorrect CDB length %d, unit 0x%016Lx on " "port 0x%016Lx closed\n", req->qtcb->bottom.io.fcp_cmnd_length, - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; @@ -2237,6 +2245,20 @@ skip_fsfstatus: } } +static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl) +{ + u32 *fcp_dl_ptr; + + /* + * fcp_dl_addr = start address of fcp_cmnd structure + + * size of fixed part + size of dynamically sized add_dcp_cdb field + * SEE FCP-2 documentation + */ + fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] + + (fcp_cmd->add_fcp_cdb_length << 2)); + *fcp_dl_ptr = fcp_dl; +} + /** * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) * @adapter: adapter where scsi command is issued @@ -2322,7 +2344,7 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + - fcp_cmnd_iu->add_fcp_cdb_length + sizeof(fcp_dl_t); + fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, scsi_sglist(scsi_cmnd), @@ -2334,7 +2356,8 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, dev_err(&adapter->ccw_device->dev, "Oversize data package, unit 0x%016Lx " "on port 0x%016Lx closed\n", - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_unit_shutdown(unit, 0, 131, req); retval = -EINVAL; } @@ -2397,7 +2420,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; req->qtcb->bottom.io.service_class = FSF_CLASS_3; req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + - sizeof(fcp_dl_t); + sizeof(u32); sbale = zfcp_qdio_sbale_req(req); sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index 2095a1e41e8..cf6a1479337 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -21,20 +21,6 @@ char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu) return fcp_sns_info_ptr; } -void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, fcp_dl_t fcp_dl) -{ - fcp_dl_t *fcp_dl_ptr; - - /* - * fcp_dl_addr = start address of fcp_cmnd structure + - * size of fixed part + size of dynamically sized add_dcp_cdb field - * SEE FCP-2 documentation - */ - fcp_dl_ptr = (fcp_dl_t *) ((unsigned char *) &fcp_cmd[1] + - (fcp_cmd->add_fcp_cdb_length << 2)); - *fcp_dl_ptr = fcp_dl; -} - static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt) { struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata; diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index 430e486e918..7f7384c02a5 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -26,9 +26,9 @@ static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, status, "0x%08x\n", atomic_read(&adapter->status)); ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwnn, "0x%016llx\n", - adapter->peer_wwnn); + (unsigned long long) adapter->peer_wwnn); ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n", - adapter->peer_wwpn); + (unsigned long long) adapter->peer_wwpn); ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_d_id, "0x%06x\n", adapter->peer_d_id); ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, card_version, "0x%04x\n", @@ -135,7 +135,7 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, { struct zfcp_adapter *adapter = dev_get_drvdata(dev); struct zfcp_port *port; - wwn_t wwpn; + u64 wwpn; int retval = 0; down(&zfcp_data.config_sema); @@ -144,7 +144,7 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, goto out; } - if (strict_strtoull(buf, 0, &wwpn)) { + if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) { retval = -EINVAL; goto out; } @@ -200,7 +200,7 @@ static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, { struct zfcp_port *port = dev_get_drvdata(dev); struct zfcp_unit *unit; - fcp_lun_t fcp_lun; + u64 fcp_lun; int retval = -EINVAL; down(&zfcp_data.config_sema); @@ -209,7 +209,7 @@ static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, goto out; } - if (strict_strtoull(buf, 0, &fcp_lun)) + if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) goto out; unit = zfcp_unit_enqueue(port, fcp_lun); @@ -233,7 +233,7 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, { struct zfcp_port *port = dev_get_drvdata(dev); struct zfcp_unit *unit; - fcp_lun_t fcp_lun; + u64 fcp_lun; int retval = 0; down(&zfcp_data.config_sema); @@ -242,7 +242,7 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, goto out; } - if (strict_strtoull(buf, 0, &fcp_lun)) { + if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) { retval = -EINVAL; goto out; } @@ -380,8 +380,10 @@ static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", unit->port->adapter->ccw_device->dev.bus_id); -ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", unit->port->wwpn); -ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", unit->fcp_lun); +ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", + (unsigned long long) unit->port->wwpn); +ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", + (unsigned long long) unit->fcp_lun); struct device_attribute *zfcp_sysfs_sdev_attrs[] = { &dev_attr_fcp_lun, -- cgit v1.2.3 From a1b449de5d35b9eec8981c6ea999eea263b19a0b Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Wed, 1 Oct 2008 12:42:19 +0200 Subject: [SCSI] zfcp: Simplify get_adapter_by_busid Call the helper function from cio instead looping through all zfcp adapters. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_aux.c | 13 ------------- drivers/s390/scsi/zfcp_ccw.c | 17 +++++++++++++++++ drivers/s390/scsi/zfcp_ext.h | 1 + 3 files changed, 18 insertions(+), 13 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 811ce8a2825..6397de01b85 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -106,19 +106,6 @@ static int __init zfcp_device_setup(char *devstr) return 0; } -static struct zfcp_adapter *zfcp_get_adapter_by_busid(char *bus_id) -{ - struct zfcp_adapter *adapter; - - list_for_each_entry(adapter, &zfcp_data.adapter_list_head, list) - if ((strncmp(bus_id, adapter->ccw_device->dev.bus_id, - BUS_ID_SIZE) == 0) && - !(atomic_read(&adapter->status) & - ZFCP_STATUS_COMMON_REMOVE)) - return adapter; - return NULL; -} - static void __init zfcp_init_device_configure(void) { struct zfcp_adapter *adapter; diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c index 0e1a42f7a4b..3a9bd5451a4 100644 --- a/drivers/s390/scsi/zfcp_ccw.c +++ b/drivers/s390/scsi/zfcp_ccw.c @@ -224,3 +224,20 @@ int __init zfcp_ccw_register(void) { return ccw_driver_register(&zfcp_ccw_driver); } + +/** + * zfcp_get_adapter_by_busid - find zfcp_adapter struct + * @busid: bus id string of zfcp adapter to find + */ +struct zfcp_adapter *zfcp_get_adapter_by_busid(char *busid) +{ + struct ccw_device *ccw_device; + struct zfcp_adapter *adapter = NULL; + + ccw_device = get_ccwdev_by_busid(&zfcp_ccw_driver, busid); + if (ccw_device) { + adapter = dev_get_drvdata(&ccw_device->dev); + put_device(&ccw_device->dev); + } + return adapter; +} diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h index ca1db974fc5..b8c5c37b2af 100644 --- a/drivers/s390/scsi/zfcp_ext.h +++ b/drivers/s390/scsi/zfcp_ext.h @@ -27,6 +27,7 @@ extern int zfcp_sg_setup_table(struct scatterlist *, int); /* zfcp_ccw.c */ extern int zfcp_ccw_register(void); +extern struct zfcp_adapter *zfcp_get_adapter_by_busid(char *); /* zfcp_cfdc.c */ extern struct miscdevice zfcp_cfdc_misc; -- cgit v1.2.3 From 0406289ed57955860a4f8d744a14f4c819260ce4 Mon Sep 17 00:00:00 2001 From: Christof Schmitt Date: Wed, 1 Oct 2008 12:42:20 +0200 Subject: [SCSI] zfcp: Simplify zfcp data structures Reduce the size of zfcp data structures by removing unused and redundant members. scsi_lun is only the mangled version of the fcp_lun. So, remove the redundant field and use the fcp_lun instead. Since the queue lock and the pci_batch indicator are only used in the request queue, move them from the common queue struct to the adapter struct. Signed-off-by: Christof Schmitt Signed-off-by: Swen Schillig Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_aux.c | 34 +--------------- drivers/s390/scsi/zfcp_ccw.c | 10 +++-- drivers/s390/scsi/zfcp_def.h | 26 +++--------- drivers/s390/scsi/zfcp_erp.c | 2 +- drivers/s390/scsi/zfcp_fc.c | 3 +- drivers/s390/scsi/zfcp_fsf.c | 89 +++++++++++++++++++++--------------------- drivers/s390/scsi/zfcp_qdio.c | 12 +++--- drivers/s390/scsi/zfcp_scsi.c | 8 +++- drivers/s390/scsi/zfcp_sysfs.c | 6 ++- 9 files changed, 77 insertions(+), 113 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 6397de01b85..b9984648aca 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -169,8 +169,6 @@ static int __init zfcp_module_init(void) goto out_gid_cache; INIT_LIST_HEAD(&zfcp_data.adapter_list_head); - INIT_LIST_HEAD(&zfcp_data.adapter_remove_lh); - sema_init(&zfcp_data.config_sema, 1); rwlock_init(&zfcp_data.config_lock); @@ -312,7 +310,6 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) } zfcp_unit_get(unit); - unit->scsi_lun = scsilun_to_int((struct scsi_lun *)&unit->fcp_lun); write_lock_irq(&zfcp_data.config_lock); list_add_tail(&unit->list, &port->unit_list_head); @@ -321,7 +318,6 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) write_unlock_irq(&zfcp_data.config_lock); - port->units++; zfcp_port_get(port); return unit; @@ -344,7 +340,6 @@ void zfcp_unit_dequeue(struct zfcp_unit *unit) write_lock_irq(&zfcp_data.config_lock); list_del(&unit->list); write_unlock_irq(&zfcp_data.config_lock); - unit->port->units--; zfcp_port_put(unit->port); sysfs_remove_group(&unit->sysfs_device.kobj, &zfcp_sysfs_unit_attrs); device_unregister(&unit->sysfs_device); @@ -405,11 +400,6 @@ static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter) mempool_destroy(adapter->pool.data_gid_pn); } -static void zfcp_dummy_release(struct device *dev) -{ - return; -} - /** * zfcp_status_read_refill - refill the long running status_read_requests * @adapter: ptr to struct zfcp_adapter for which the buffers should be refilled @@ -484,7 +474,6 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) init_waitqueue_head(&adapter->erp_done_wqh); INIT_LIST_HEAD(&adapter->port_list_head); - INIT_LIST_HEAD(&adapter->port_remove_lh); INIT_LIST_HEAD(&adapter->erp_ready_head); INIT_LIST_HEAD(&adapter->erp_running_head); @@ -494,7 +483,7 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) spin_lock_init(&adapter->san_dbf_lock); spin_lock_init(&adapter->scsi_dbf_lock); spin_lock_init(&adapter->rec_dbf_lock); - spin_lock_init(&adapter->req_q.lock); + spin_lock_init(&adapter->req_q_lock); rwlock_init(&adapter->erp_lock); rwlock_init(&adapter->abort_lock); @@ -513,28 +502,15 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) &zfcp_sysfs_adapter_attrs)) goto sysfs_failed; - adapter->generic_services.parent = &adapter->ccw_device->dev; - adapter->generic_services.release = zfcp_dummy_release; - snprintf(adapter->generic_services.bus_id, BUS_ID_SIZE, - "generic_services"); - - if (device_register(&adapter->generic_services)) - goto generic_services_failed; - write_lock_irq(&zfcp_data.config_lock); atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status); list_add_tail(&adapter->list, &zfcp_data.adapter_list_head); write_unlock_irq(&zfcp_data.config_lock); - zfcp_data.adapters++; - zfcp_fc_nameserver_init(adapter); return 0; -generic_services_failed: - sysfs_remove_group(&ccw_device->dev.kobj, - &zfcp_sysfs_adapter_attrs); sysfs_failed: zfcp_adapter_debug_unregister(adapter); debug_register_failed: @@ -561,7 +537,6 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter) cancel_work_sync(&adapter->scan_work); cancel_work_sync(&adapter->stat_work); zfcp_adapter_scsi_unregister(adapter); - device_unregister(&adapter->generic_services); sysfs_remove_group(&adapter->ccw_device->dev.kobj, &zfcp_sysfs_adapter_attrs); dev_set_drvdata(&adapter->ccw_device->dev, NULL); @@ -579,9 +554,6 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter) list_del(&adapter->list); write_unlock_irq(&zfcp_data.config_lock); - /* decrease number of adapters in list */ - zfcp_data.adapters--; - zfcp_qdio_free(adapter); zfcp_free_low_mem_buffers(adapter); @@ -620,9 +592,7 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, return ERR_PTR(-ENOMEM); init_waitqueue_head(&port->remove_wq); - INIT_LIST_HEAD(&port->unit_list_head); - INIT_LIST_HEAD(&port->unit_remove_lh); INIT_WORK(&port->gid_pn_work, zfcp_erp_port_strategy_open_lookup); port->adapter = adapter; @@ -665,7 +635,6 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, list_add_tail(&port->list, &adapter->port_list_head); atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING, &port->status); - adapter->ports++; write_unlock_irq(&zfcp_data.config_lock); @@ -687,7 +656,6 @@ void zfcp_port_dequeue(struct zfcp_port *port) wait_event(port->remove_wq, atomic_read(&port->refcount) == 0); write_lock_irq(&zfcp_data.config_lock); list_del(&port->list); - port->adapter->ports--; write_unlock_irq(&zfcp_data.config_lock); if (port->rport) fc_remote_port_delete(port->rport); diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c index 3a9bd5451a4..b04038c7478 100644 --- a/drivers/s390/scsi/zfcp_ccw.c +++ b/drivers/s390/scsi/zfcp_ccw.c @@ -47,6 +47,8 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device) struct zfcp_adapter *adapter; struct zfcp_port *port, *p; struct zfcp_unit *unit, *u; + LIST_HEAD(unit_remove_lh); + LIST_HEAD(port_remove_lh); ccw_device_set_offline(ccw_device); down(&zfcp_data.config_sema); @@ -55,18 +57,18 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device) write_lock_irq(&zfcp_data.config_lock); list_for_each_entry_safe(port, p, &adapter->port_list_head, list) { list_for_each_entry_safe(unit, u, &port->unit_list_head, list) { - list_move(&unit->list, &port->unit_remove_lh); + list_move(&unit->list, &unit_remove_lh); atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status); } - list_move(&port->list, &adapter->port_remove_lh); + list_move(&port->list, &port_remove_lh); atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); } atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status); write_unlock_irq(&zfcp_data.config_lock); - list_for_each_entry_safe(port, p, &adapter->port_remove_lh, list) { - list_for_each_entry_safe(unit, u, &port->unit_remove_lh, list) { + list_for_each_entry_safe(port, p, &port_remove_lh, list) { + list_for_each_entry_safe(unit, u, &unit_remove_lh, list) { if (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_REGISTERED) scsi_remove_device(unit->device); diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index cbbfd875d93..7fa8937c8c5 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -412,14 +412,9 @@ struct zfcp_wka_port { }; struct zfcp_qdio_queue { - struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */ - u8 first; /* index of next free bfr - in queue (free_count>0) */ - atomic_t count; /* number of free buffers - in queue */ - spinlock_t lock; /* lock for operations on queue */ - int pci_batch; /* SBALs since PCI indication - was last set */ + struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; + u8 first; /* index of next free bfr in queue */ + atomic_t count; /* number of free buffers in queue */ }; struct zfcp_erp_action { @@ -471,13 +466,13 @@ struct zfcp_adapter { u16 timer_ticks; /* time int for a tick */ struct Scsi_Host *scsi_host; /* Pointer to mid-layer */ struct list_head port_list_head; /* remote port list */ - struct list_head port_remove_lh; /* head of ports to be - removed */ - u32 ports; /* number of remote ports */ unsigned long req_no; /* unique FSF req number */ struct list_head *req_list; /* list of pending reqs */ spinlock_t req_list_lock; /* request list lock */ struct zfcp_qdio_queue req_q; /* request queue */ + spinlock_t req_q_lock; /* for operations on queue */ + int req_q_pci_batch; /* SBALs since PCI indication + was last set */ u32 fsf_req_seq_no; /* FSF cmnd seq number */ wait_queue_head_t request_wq; /* can be used to wait for more avaliable SBALs */ @@ -516,7 +511,6 @@ struct zfcp_adapter { struct zfcp_scsi_dbf_record scsi_dbf_buf; struct zfcp_adapter_mempool pool; /* Adapter memory pools */ struct qdio_initialize qdio_init_data; /* for qdio_establish */ - struct device generic_services; /* directory for WKA ports */ struct fc_host_statistics *fc_stats; struct fsf_qtcb_bottom_port *stats_reset_data; unsigned long stats_reset; @@ -533,9 +527,6 @@ struct zfcp_port { refcount drop to zero */ struct zfcp_adapter *adapter; /* adapter used to access port */ struct list_head unit_list_head; /* head of logical unit list */ - struct list_head unit_remove_lh; /* head of luns to be removed - list */ - u32 units; /* # of logical units in list */ atomic_t status; /* status of this remote port */ u64 wwnn; /* WWNN if known */ u64 wwpn; /* WWPN */ @@ -556,7 +547,6 @@ struct zfcp_unit { refcount drop to zero */ struct zfcp_port *port; /* remote port of unit */ atomic_t status; /* status of this logical unit */ - unsigned int scsi_lun; /* own SCSI LUN */ u64 fcp_lun; /* own FCP_LUN */ u32 handle; /* handle assigned by FSF */ struct scsi_device *device; /* scsi device struct pointer */ @@ -599,11 +589,7 @@ struct zfcp_fsf_req { struct zfcp_data { struct scsi_host_template scsi_host_template; struct scsi_transport_template *scsi_transport_template; - atomic_t status; /* Module status flags */ struct list_head adapter_list_head; /* head of adapter list */ - struct list_head adapter_remove_lh; /* head of adapters to be - removed */ - u32 adapters; /* # of adapters in list */ rwlock_t config_lock; /* serialises changes to adapter/port/unit lists */ diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 07d22f343cc..174b38fe762 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -1186,7 +1186,7 @@ static void zfcp_erp_scsi_scan(struct work_struct *work) struct zfcp_unit *unit = p->unit; struct fc_rport *rport = unit->port->rport; scsi_scan_target(&rport->dev, 0, rport->scsi_target_id, - unit->scsi_lun, 0); + scsilun_to_int((struct scsi_lun *)&unit->fcp_lun), 0); atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status); zfcp_unit_put(unit); kfree(p); diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 3a573b03eb8..1a7c80a77ff 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -526,7 +526,8 @@ static void zfcp_validate_port(struct zfcp_port *port) atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status); - if ((port->supported_classes != 0) || (port->units != 0)) { + if ((port->supported_classes != 0) || + !list_empty(&port->unit_list_head)) { zfcp_port_put(port); return; } diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 02a570084d8..c10b88d235d 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -639,12 +639,14 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) } } -static int zfcp_fsf_sbal_check(struct zfcp_qdio_queue *queue) +static int zfcp_fsf_sbal_check(struct zfcp_adapter *adapter) { - spin_lock_bh(&queue->lock); - if (atomic_read(&queue->count)) + struct zfcp_qdio_queue *req_q = &adapter->req_q; + + spin_lock_bh(&adapter->req_q_lock); + if (atomic_read(&req_q->count)) return 1; - spin_unlock_bh(&queue->lock); + spin_unlock_bh(&adapter->req_q_lock); return 0; } @@ -659,17 +661,16 @@ static int zfcp_fsf_sbal_available(struct zfcp_adapter *adapter) static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) { long ret; - struct zfcp_qdio_queue *req_q = &adapter->req_q; - spin_unlock_bh(&req_q->lock); + spin_unlock_bh(&adapter->req_q_lock); ret = wait_event_interruptible_timeout(adapter->request_wq, - zfcp_fsf_sbal_check(req_q), 5 * HZ); + zfcp_fsf_sbal_check(adapter), 5 * HZ); if (ret > 0) return 0; if (!ret) atomic_inc(&adapter->qdio_outb_full); - spin_lock_bh(&req_q->lock); + spin_lock_bh(&adapter->req_q_lock); return -EIO; } @@ -811,7 +812,7 @@ int zfcp_fsf_status_read(struct zfcp_adapter *adapter) struct qdio_buffer_element *sbale; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -851,7 +852,7 @@ failed_buf: zfcp_fsf_req_free(req); zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -924,7 +925,7 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; - spin_lock(&adapter->req_q.lock); + spin_lock(&adapter->req_q_lock); if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, @@ -954,7 +955,7 @@ out_error_free: zfcp_fsf_req_free(req); req = NULL; out: - spin_unlock(&adapter->req_q.lock); + spin_unlock(&adapter->req_q_lock); return req; } @@ -1043,7 +1044,7 @@ int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, struct zfcp_fsf_req *req; int ret = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1085,7 +1086,7 @@ failed_send: if (erp_action) erp_action->fsf_req = NULL; out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return ret; } @@ -1155,7 +1156,7 @@ int zfcp_fsf_send_els(struct zfcp_send_els *els) ZFCP_STATUS_COMMON_UNBLOCKED))) return -EBUSY; - spin_lock(&adapter->req_q.lock); + spin_lock(&adapter->req_q_lock); if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, @@ -1189,7 +1190,7 @@ int zfcp_fsf_send_els(struct zfcp_send_els *els) failed_send: zfcp_fsf_req_free(req); out: - spin_unlock(&adapter->req_q.lock); + spin_unlock(&adapter->req_q_lock); return ret; } @@ -1200,7 +1201,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) struct zfcp_adapter *adapter = erp_action->adapter; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, @@ -1232,7 +1233,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1243,7 +1244,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, struct zfcp_fsf_req *req = NULL; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1271,7 +1272,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); if (!retval) wait_event(req->completion_wq, req->status & ZFCP_STATUS_FSFREQ_COMPLETED); @@ -1296,7 +1297,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) return -EOPNOTSUPP; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, @@ -1322,7 +1323,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1342,7 +1343,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) return -EOPNOTSUPP; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (!zfcp_fsf_sbal_available(adapter)) goto out; @@ -1364,7 +1365,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); if (!retval) wait_event(req->completion_wq, req->status & ZFCP_STATUS_FSFREQ_COMPLETED); @@ -1462,7 +1463,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1492,7 +1493,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1530,7 +1531,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1559,7 +1560,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1603,7 +1604,7 @@ int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1629,7 +1630,7 @@ int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) if (retval) zfcp_fsf_req_free(req); out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1658,7 +1659,7 @@ int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1683,7 +1684,7 @@ int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) if (retval) zfcp_fsf_req_free(req); out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1750,7 +1751,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1781,7 +1782,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1924,7 +1925,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1957,7 +1958,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -2010,7 +2011,7 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, @@ -2039,7 +2040,7 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -2281,7 +2282,7 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, ZFCP_STATUS_COMMON_UNBLOCKED))) return -EBUSY; - spin_lock(&adapter->req_q.lock); + spin_lock(&adapter->req_q_lock); if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, @@ -2380,7 +2381,7 @@ failed_scsi_cmnd: zfcp_fsf_req_free(req); scsi_cmnd->host_scribble = NULL; out: - spin_unlock(&adapter->req_q.lock); + spin_unlock(&adapter->req_q_lock); return retval; } @@ -2404,7 +2405,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, ZFCP_STATUS_COMMON_UNBLOCKED))) return NULL; - spin_lock(&adapter->req_q.lock); + spin_lock(&adapter->req_q_lock); if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, @@ -2437,7 +2438,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, zfcp_fsf_req_free(req); req = NULL; out: - spin_unlock(&adapter->req_q.lock); + spin_unlock(&adapter->req_q_lock); return req; } @@ -2475,7 +2476,7 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, return ERR_PTR(-EINVAL); } - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -2505,7 +2506,7 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); if (!retval) { wait_event(req->completion_wq, diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index 0dfaa176af7..3e05080e62d 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -346,7 +346,7 @@ int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req) struct qdio_buffer_element *sbale; /* acknowledgements for transferred buffers */ - pci_batch = req_q->pci_batch + count; + pci_batch = adapter->req_q_pci_batch + count; if (unlikely(pci_batch >= ZFCP_QDIO_PCI_INTERVAL)) { pci_batch %= ZFCP_QDIO_PCI_INTERVAL; pci = first + count - (pci_batch + 1); @@ -366,7 +366,7 @@ int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req) atomic_sub(count, &req_q->count); req_q->first += count; req_q->first %= QDIO_MAX_BUFFERS_PER_Q; - req_q->pci_batch = pci_batch; + adapter->req_q_pci_batch = pci_batch; return 0; } @@ -422,9 +422,9 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) /* clear QDIOUP flag, thus do_QDIO is not called during qdio_shutdown */ req_q = &adapter->req_q; - spin_lock_bh(&req_q->lock); + spin_lock_bh(&adapter->req_q_lock); atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status); - spin_unlock_bh(&req_q->lock); + spin_unlock_bh(&adapter->req_q_lock); qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR); @@ -437,7 +437,7 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) } req_q->first = 0; atomic_set(&req_q->count, 0); - req_q->pci_batch = 0; + adapter->req_q_pci_batch = 0; adapter->resp_q.first = 0; atomic_set(&adapter->resp_q.count, 0); } @@ -475,7 +475,7 @@ int zfcp_qdio_open(struct zfcp_adapter *adapter) /* set index of first avalable SBALS / number of available SBALS */ adapter->req_q.first = 0; atomic_set(&adapter->req_q.count, QDIO_MAX_BUFFERS_PER_Q); - adapter->req_q.pci_batch = 0; + adapter->req_q_pci_batch = 0; return 0; diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index cf6a1479337..ca8f85f3dad 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -105,13 +105,17 @@ static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter, { struct zfcp_port *port; struct zfcp_unit *unit; + int scsi_lun; list_for_each_entry(port, &adapter->port_list_head, list) { if (!port->rport || (id != port->rport->scsi_target_id)) continue; - list_for_each_entry(unit, &port->unit_list_head, list) - if (lun == unit->scsi_lun) + list_for_each_entry(unit, &port->unit_list_head, list) { + scsi_lun = scsilun_to_int( + (struct scsi_lun *)&unit->fcp_lun); + if (lun == scsi_lun) return unit; + } } return NULL; diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index 7f7384c02a5..2809d789b55 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -137,6 +137,7 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, struct zfcp_port *port; u64 wwpn; int retval = 0; + LIST_HEAD(port_remove_lh); down(&zfcp_data.config_sema); if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) { @@ -154,7 +155,7 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, if (port && (atomic_read(&port->refcount) == 0)) { zfcp_port_get(port); atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); - list_move(&port->list, &adapter->port_remove_lh); + list_move(&port->list, &port_remove_lh); } else port = NULL; write_unlock_irq(&zfcp_data.config_lock); @@ -235,6 +236,7 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, struct zfcp_unit *unit; u64 fcp_lun; int retval = 0; + LIST_HEAD(unit_remove_lh); down(&zfcp_data.config_sema); if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) { @@ -252,7 +254,7 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, if (unit && (atomic_read(&unit->refcount) == 0)) { zfcp_unit_get(unit); atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status); - list_move(&unit->list, &port->unit_remove_lh); + list_move(&unit->list, &unit_remove_lh); } else unit = NULL; -- cgit v1.2.3 From 57069386699994c3e67042fc4928c418f3a39e01 Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Wed, 1 Oct 2008 12:42:21 +0200 Subject: [SCSI] zfcp: put threshold data in hba trace Now that we removed the long messages for the bit error threshold data, put the data in the hba trace. This way, we get a short warning for the threshold event from the hardware and have the data in the trace for further analysis. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_dbf.c | 46 ++++++++++++++++++++++++++++++++++++++++++++ drivers/s390/scsi/zfcp_dbf.h | 1 + drivers/s390/scsi/zfcp_ext.h | 2 ++ drivers/s390/scsi/zfcp_fsf.c | 1 + 4 files changed, 50 insertions(+) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index c1f69f611e6..9c9f9cfcd46 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -318,6 +318,26 @@ void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags); } +/** + * zfcp_hba_dbf_event_berr - trace event for bit error threshold + * @adapter: adapter affected by this QDIO related event + * @req: fsf request + */ +void zfcp_hba_dbf_event_berr(struct zfcp_adapter *adapter, + struct zfcp_fsf_req *req) +{ + struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf; + struct fsf_status_read_buffer *sr_buf = req->data; + struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error; + unsigned long flags; + + spin_lock_irqsave(&adapter->hba_dbf_lock, flags); + memset(r, 0, sizeof(*r)); + strncpy(r->tag, "berr", ZFCP_DBF_TAG_SIZE); + memcpy(&r->u.berr, err, sizeof(struct fsf_bit_error_payload)); + debug_event(adapter->hba_dbf, 0, r, sizeof(*r)); + spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags); +} static void zfcp_hba_dbf_view_response(char **p, struct zfcp_hba_dbf_record_response *r) { @@ -399,6 +419,30 @@ static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r) zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count); } +static void zfcp_hba_dbf_view_berr(char **p, struct fsf_bit_error_payload *r) +{ + zfcp_dbf_out(p, "link_failures", "%d", r->link_failure_error_count); + zfcp_dbf_out(p, "loss_of_sync_err", "%d", r->loss_of_sync_error_count); + zfcp_dbf_out(p, "loss_of_sig_err", "%d", r->loss_of_signal_error_count); + zfcp_dbf_out(p, "prim_seq_err", "%d", + r->primitive_sequence_error_count); + zfcp_dbf_out(p, "inval_trans_word_err", "%d", + r->invalid_transmission_word_error_count); + zfcp_dbf_out(p, "CRC_errors", "%d", r->crc_error_count); + zfcp_dbf_out(p, "prim_seq_event_to", "%d", + r->primitive_sequence_event_timeout_count); + zfcp_dbf_out(p, "elast_buf_overrun_err", "%d", + r->elastic_buffer_overrun_error_count); + zfcp_dbf_out(p, "adv_rec_buf2buf_cred", "%d", + r->advertised_receive_b2b_credit); + zfcp_dbf_out(p, "curr_rec_buf2buf_cred", "%d", + r->current_receive_b2b_credit); + zfcp_dbf_out(p, "adv_trans_buf2buf_cred", "%d", + r->advertised_transmit_b2b_credit); + zfcp_dbf_out(p, "curr_trans_buf2buf_cred", "%d", + r->current_transmit_b2b_credit); +} + static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view, char *out_buf, const char *in_buf) { @@ -418,6 +462,8 @@ static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view, zfcp_hba_dbf_view_status(&p, &r->u.status); else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0) zfcp_hba_dbf_view_qdio(&p, &r->u.qdio); + else if (strncmp(r->tag, "berr", ZFCP_DBF_TAG_SIZE) == 0) + zfcp_hba_dbf_view_berr(&p, &r->u.berr); p += sprintf(p, "\n"); return p - out_buf; diff --git a/drivers/s390/scsi/zfcp_dbf.h b/drivers/s390/scsi/zfcp_dbf.h index 0ddb18449d1..e8f450801fe 100644 --- a/drivers/s390/scsi/zfcp_dbf.h +++ b/drivers/s390/scsi/zfcp_dbf.h @@ -151,6 +151,7 @@ struct zfcp_hba_dbf_record { struct zfcp_hba_dbf_record_response response; struct zfcp_hba_dbf_record_status status; struct zfcp_hba_dbf_record_qdio qdio; + struct fsf_bit_error_payload berr; } u; } __attribute__ ((packed)); diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h index b8c5c37b2af..b5adeda93e1 100644 --- a/drivers/s390/scsi/zfcp_ext.h +++ b/drivers/s390/scsi/zfcp_ext.h @@ -49,6 +49,8 @@ extern void zfcp_hba_dbf_event_fsf_unsol(const char *, struct zfcp_adapter *, struct fsf_status_read_buffer *); extern void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *, unsigned int, int, int); +extern void zfcp_hba_dbf_event_berr(struct zfcp_adapter *, + struct zfcp_fsf_req *); extern void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *); extern void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *); extern void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *); diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index c10b88d235d..f073fff0868 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -294,6 +294,7 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) dev_warn(&adapter->ccw_device->dev, "The error threshold for checksum statistics " "has been exceeded\n"); + zfcp_hba_dbf_event_berr(adapter, req); break; case FSF_STATUS_READ_LINK_DOWN: zfcp_fsf_status_read_link_down(req); -- cgit v1.2.3 From b7f15f3c94196accac799727502ed88a029ae7ef Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Wed, 1 Oct 2008 12:42:22 +0200 Subject: [SCSI] zfcp: fix deadlock caused by shared work queue tasks Each adapter reopen trigger automatically a scan_port task which is waiting for the ERP to be finished before further processing. Since the initial device setup enqueues adapter, port and LUN which are individual ERP actions, this process would start after everything is done. Unfortunately the port_reopen requires another scheduled work to be finished which is queued after the automatic scan_port -> deadlock ! This fix creates an own work queue for ERP based nameserver requests. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_aux.c | 2 ++ drivers/s390/scsi/zfcp_def.h | 1 + drivers/s390/scsi/zfcp_erp.c | 4 ++-- drivers/s390/scsi/zfcp_fsf.c | 2 +- 4 files changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index b9984648aca..05f3de64f6a 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -168,6 +168,8 @@ static int __init zfcp_module_init(void) if (!zfcp_data.gid_pn_cache) goto out_gid_cache; + zfcp_data.work_queue = create_singlethread_workqueue("zfcp_wq"); + INIT_LIST_HEAD(&zfcp_data.adapter_list_head); sema_init(&zfcp_data.config_sema, 1); rwlock_init(&zfcp_data.config_lock); diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 7fa8937c8c5..73eb41580f2 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -602,6 +602,7 @@ struct zfcp_data { struct kmem_cache *fsf_req_qtcb_cache; struct kmem_cache *sr_buffer_cache; struct kmem_cache *gid_pn_cache; + struct workqueue_struct *work_queue; }; /* struct used by memory pools for fsf_requests */ diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 174b38fe762..f5ebeb7ca2b 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -869,7 +869,7 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act) if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_PTP) return zfcp_erp_open_ptp_port(act); if (!(p_status & ZFCP_STATUS_PORT_DID_DID)) { - schedule_work(&port->gid_pn_work); + queue_work(zfcp_data.work_queue, &port->gid_pn_work); return ZFCP_ERP_CONTINUES; } case ZFCP_ERP_STEP_NAMESERVER_LOOKUP: @@ -1209,7 +1209,7 @@ static void zfcp_erp_schedule_work(struct zfcp_unit *unit) atomic_set_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status); INIT_WORK(&p->work, zfcp_erp_scsi_scan); p->unit = unit; - schedule_work(&p->work); + queue_work(zfcp_data.work_queue, &p->work); } static void zfcp_erp_rport_register(struct zfcp_port *port) diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index f073fff0868..600ef5711ac 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -329,7 +329,7 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) zfcp_fsf_req_free(req); atomic_inc(&adapter->stat_miss); - schedule_work(&adapter->stat_work); + queue_work(zfcp_data.work_queue, &adapter->stat_work); } static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) -- cgit v1.2.3 From e4e9ba5d9313f362d2192fb7a2d35a3bfb714b1e Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Wed, 1 Oct 2008 12:42:23 +0200 Subject: [SCSI] zfcp: prevent fc_remote_port_delete calls for unregistered rport In case of an adapter reopen all rports have to be deleted from the environment. This should only happen for already registered rports otherwise fc_remote_port_delete is called with a NULL pointer. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_erp.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index f5ebeb7ca2b..8c117416d5a 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -1236,6 +1236,8 @@ static void zfcp_erp_rports_del(struct zfcp_adapter *adapter) { struct zfcp_port *port; list_for_each_entry(port, &adapter->port_list_head, list) { + if (!port->rport) + continue; fc_remote_port_delete(port->rport); port->rport = NULL; } -- cgit v1.2.3 From 9fb3cd86e4870d54d71a80323e97c48df4de05bd Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Wed, 1 Oct 2008 12:42:24 +0200 Subject: [SCSI] zfcp: fix erp list usage without using locks The zfcp_erp_thread was using the nolock version of the dbf function. This resulted in a list access while other tasks could modifying the list. The symptom was an erp thread running at 100% CPU and never returning from the dbf function. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_erp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 8c117416d5a..4539530768a 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -1395,9 +1395,9 @@ static int zfcp_erp_thread(void *data) zfcp_erp_wakeup(adapter); } - zfcp_rec_dbf_event_thread(4, adapter); + zfcp_rec_dbf_event_thread_lock(4, adapter); down_interruptible(&adapter->erp_ready_sem); - zfcp_rec_dbf_event_thread(5, adapter); + zfcp_rec_dbf_event_thread_lock(5, adapter); } atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status); -- cgit v1.2.3 From 091694a556d168dc9df4d79e3a40116550b183cf Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Wed, 1 Oct 2008 12:42:25 +0200 Subject: [SCSI] zfcp: wait on SCSI work to be finished before proceeding with init dev Due to the character of a scheduled work we cannot guarantee the LUN register to be finished before an initial device tries to use it. Therefor we have to wait for PENDING_SCSI_WORK flag to be cleared before proceeding. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_aux.c | 5 +++++ drivers/s390/scsi/zfcp_erp.c | 1 + 2 files changed, 6 insertions(+) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 05f3de64f6a..24255e42dc3 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -129,7 +129,12 @@ static void __init zfcp_init_device_configure(void) goto out_unit; up(&zfcp_data.config_sema); ccw_device_set_online(adapter->ccw_device); + zfcp_erp_wait(adapter); + wait_event(adapter->erp_done_wqh, + !(atomic_read(&unit->status) & + ZFCP_STATUS_UNIT_SCSI_WORK_PENDING)); + down(&zfcp_data.config_sema); zfcp_unit_put(unit); out_unit: diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 4539530768a..26049c66343 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -1189,6 +1189,7 @@ static void zfcp_erp_scsi_scan(struct work_struct *work) scsilun_to_int((struct scsi_lun *)&unit->fcp_lun), 0); atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status); zfcp_unit_put(unit); + wake_up(&unit->port->adapter->erp_done_wqh); kfree(p); } -- cgit v1.2.3 From 41bfcf90101601f9507240ff0435c1b73d28a132 Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Wed, 1 Oct 2008 12:42:26 +0200 Subject: [SCSI] zfcp: fix double dbf id usage Trace ids 107 and 3 are used twice, fix this to have unique ids for the erp triggers. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_dbf.c | 2 +- drivers/s390/scsi/zfcp_erp.c | 2 +- drivers/s390/scsi/zfcp_fsf.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index 9c9f9cfcd46..060f5f2352e 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -572,7 +572,7 @@ static const char *zfcp_rec_dbf_ids[] = { [81] = "shared read-write unit access unsupported", [82] = "incoming rscn", [83] = "incoming wwpn", - [84] = "", + [84] = "wka port handle not valid close port", [85] = "online", [86] = "offline", [87] = "ccw device gone", diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 26049c66343..78231313187 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -1443,7 +1443,7 @@ void zfcp_erp_thread_kill(struct zfcp_adapter *adapter) { atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL, &adapter->status); up(&adapter->erp_ready_sem); - zfcp_rec_dbf_event_thread_lock(2, adapter); + zfcp_rec_dbf_event_thread_lock(3, adapter); wait_event(adapter->erp_thread_wqh, !(atomic_read(&adapter->status) & diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 600ef5711ac..739356a5c12 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -1641,7 +1641,7 @@ static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { req->status |= ZFCP_STATUS_FSFREQ_ERROR; - zfcp_erp_adapter_reopen(wka_port->adapter, 0, 107, req); + zfcp_erp_adapter_reopen(wka_port->adapter, 0, 84, req); } wka_port->status = ZFCP_WKA_PORT_OFFLINE; -- cgit v1.2.3 From 2a0217d5c7d22d6dd28f8ae5d20b06d24dc426b8 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Fri, 10 Oct 2008 21:33:09 +0200 Subject: [S390] bus_id -> dev_name conversions bus_id -> dev_name() conversions in s390 code. [cornelia.huck@de.ibm.com: minor adaptions] Signed-off-by: Kay Sievers Cc: Cornelia Huck Signed-off-by: Greg Kroah-Hartman Signed-off-by: Martin Schwidefsky --- drivers/s390/scsi/zfcp_def.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 73eb41580f2..c69345f1f73 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -596,7 +596,7 @@ struct zfcp_data { struct semaphore config_sema; /* serialises configuration changes */ atomic_t loglevel; /* current loglevel */ - char init_busid[BUS_ID_SIZE]; + char init_busid[20]; u64 init_wwpn; u64 init_fcp_lun; struct kmem_cache *fsf_req_qtcb_cache; -- cgit v1.2.3 From 1bf5b2853925cf92bfc5f0eddb68a8ed18782845 Mon Sep 17 00:00:00 2001 From: Cornelia Huck Date: Fri, 10 Oct 2008 21:33:10 +0200 Subject: [S390] bus_id -> dev_set_name() changes Convert most s390 users setting bus_id to dev_set_name(). css and ccw busses are deferred since they need some special treatment. Signed-off-by: Cornelia Huck Signed-off-by: Greg Kroah-Hartman Signed-off-by: Martin Schwidefsky --- drivers/s390/scsi/zfcp_aux.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 24255e42dc3..3b56220fb90 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -283,8 +283,8 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) unit->port = port; unit->fcp_lun = fcp_lun; - snprintf(unit->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", - (unsigned long long) fcp_lun); + dev_set_name(&unit->sysfs_device, "0x%016llx", + (unsigned long long) fcp_lun); unit->sysfs_device.parent = &port->sysfs_device; unit->sysfs_device.release = zfcp_sysfs_unit_release; dev_set_drvdata(&unit->sysfs_device, unit); @@ -610,8 +610,7 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status); atomic_set(&port->refcount, 0); - snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", - (unsigned long long) wwpn); + dev_set_name(&port->sysfs_device, "0x%016llx", wwpn); port->sysfs_device.parent = &adapter->ccw_device->dev; port->sysfs_device.release = zfcp_sysfs_port_release; -- cgit v1.2.3 From b9d3aed7e1e50183085fcd2af643bf42d6b4bd95 Mon Sep 17 00:00:00 2001 From: Cornelia Huck Date: Fri, 10 Oct 2008 21:33:11 +0200 Subject: [S390] more bus_id -> dev_name conversions Some further bus_id -> dev_name() conversions in s390 code. Cc: Kay Sievers Signed-off-by: Cornelia Huck Signed-off-by: Greg Kroah-Hartman Signed-off-by: Martin Schwidefsky --- drivers/s390/scsi/zfcp_def.h | 2 +- drivers/s390/scsi/zfcp_erp.c | 2 +- drivers/s390/scsi/zfcp_sysfs.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index c69345f1f73..8a13071c444 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -619,7 +619,7 @@ struct zfcp_fsf_req_qtcb { #define ZFCP_SET 0x00000100 #define ZFCP_CLEAR 0x00000200 -#define zfcp_get_busid_by_adapter(adapter) (adapter->ccw_device->dev.bus_id) +#define zfcp_get_busid_by_adapter(adapter) (dev_name(&adapter->ccw_device->dev)) /* * Helper functions for request ID management. diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 78231313187..9040f738ff3 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -1376,7 +1376,7 @@ static int zfcp_erp_thread(void *data) struct zfcp_erp_action *act; unsigned long flags; - daemonize("zfcperp%s", adapter->ccw_device->dev.bus_id); + daemonize("zfcperp%s", dev_name(&adapter->ccw_device->dev)); /* Block all signals */ siginitsetinv(¤t->blocked, 0); atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status); diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index 2809d789b55..ca9293ba176 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -381,7 +381,7 @@ static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", - unit->port->adapter->ccw_device->dev.bus_id); + dev_name(&unit->port->adapter->ccw_device->dev)); ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", (unsigned long long) unit->port->wwpn); ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", -- cgit v1.2.3 From 0997f1c5fec0b540784611036d458a84a1f7029a Mon Sep 17 00:00:00 2001 From: Stefan Raspl Date: Thu, 16 Oct 2008 08:23:39 +0200 Subject: blktrace: pass zfcp driver data This patch writes the channel and fabric latencies in nanoseconds per request via blktrace for later analysis. The utilization of the inbound and outbound adapter queue is also reported. Signed-off-by: Stefan Raspl Signed-off-by: Martin Peschke Signed-off-by: Christof Schmitt Signed-off-by: Jens Axboe --- drivers/s390/scsi/zfcp_def.h | 2 ++ drivers/s390/scsi/zfcp_fsf.c | 34 ++++++++++++++++++++++++++++++++++ drivers/s390/scsi/zfcp_fsf.h | 12 ++++++++++++ drivers/s390/scsi/zfcp_qdio.c | 1 + 4 files changed, 49 insertions(+) (limited to 'drivers/s390/scsi') diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 8a13071c444..9ce4c75bd19 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -583,6 +583,8 @@ struct zfcp_fsf_req { unsigned long long issued; /* request sent time (STCK) */ struct zfcp_unit *unit; void (*handler)(struct zfcp_fsf_req *); + u16 qdio_outb_usage;/* usage of outbound queue */ + u16 qdio_inb_usage; /* usage of inbound queue */ }; /* driver data */ diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 739356a5c12..5ae1d497e5e 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -6,6 +6,7 @@ * Copyright IBM Corporation 2002, 2008 */ +#include #include "zfcp_ext.h" static void zfcp_fsf_request_timeout_handler(unsigned long data) @@ -777,6 +778,7 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) list_add_tail(&req->list, &adapter->req_list[idx]); spin_unlock(&adapter->req_list_lock); + req->qdio_outb_usage = atomic_read(&req_q->count); req->issued = get_clock(); if (zfcp_qdio_send(req)) { /* Queues are down..... */ @@ -2082,6 +2084,36 @@ static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) spin_unlock_irqrestore(&unit->latencies.lock, flags); } +#ifdef CONFIG_BLK_DEV_IO_TRACE +static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) +{ + struct fsf_qual_latency_info *lat_inf; + struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data; + struct request *req = scsi_cmnd->request; + struct zfcp_blk_drv_data trace; + int ticks = fsf_req->adapter->timer_ticks; + + trace.flags = 0; + trace.magic = ZFCP_BLK_DRV_DATA_MAGIC; + if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) { + trace.flags |= ZFCP_BLK_LAT_VALID; + lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info; + trace.channel_lat = lat_inf->channel_lat * ticks; + trace.fabric_lat = lat_inf->fabric_lat * ticks; + } + if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) + trace.flags |= ZFCP_BLK_REQ_ERROR; + trace.inb_usage = fsf_req->qdio_inb_usage; + trace.outb_usage = fsf_req->qdio_outb_usage; + + blk_add_driver_data(req->q, req, &trace, sizeof(trace)); +} +#else +static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) +{ +} +#endif + static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) { struct scsi_cmnd *scpnt = req->data; @@ -2114,6 +2146,8 @@ static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) zfcp_fsf_req_latency(req); + zfcp_fsf_trace_latency(req); + if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { if (fcp_rsp_info[3] == RSP_CODE_GOOD) set_host_byte(scpnt, DID_OK); diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h index fd3a88777ac..fa2a3178061 100644 --- a/drivers/s390/scsi/zfcp_fsf.h +++ b/drivers/s390/scsi/zfcp_fsf.h @@ -439,4 +439,16 @@ struct fsf_qtcb { u8 log[FSF_QTCB_LOG_SIZE]; } __attribute__ ((packed)); +struct zfcp_blk_drv_data { +#define ZFCP_BLK_DRV_DATA_MAGIC 0x1 + u32 magic; +#define ZFCP_BLK_LAT_VALID 0x1 +#define ZFCP_BLK_REQ_ERROR 0x2 + u16 flags; + u8 inb_usage; + u8 outb_usage; + u64 channel_lat; + u64 fabric_lat; +} __attribute__ ((packed)); + #endif /* FSF_H */ diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index 3e05080e62d..664752f90b2 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -115,6 +115,7 @@ static void zfcp_qdio_reqid_check(struct zfcp_adapter *adapter, spin_unlock_irqrestore(&adapter->req_list_lock, flags); fsf_req->sbal_response = sbal_idx; + fsf_req->qdio_inb_usage = atomic_read(&adapter->resp_q.count); zfcp_fsf_req_complete(fsf_req); } -- cgit v1.2.3