![FUJITA Tomonori](/assets/img/avatar_default.png)
The commit de25deb180
changed
scsi_cmnd.sense_buffer from a static array to a dynamically allocated
buffer. We can't access to sense_buffer in '&cmd->sense_buffer' way.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
4910 lines
152 KiB
C
4910 lines
152 KiB
C
/*
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* This file is part of the zfcp device driver for
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* FCP adapters for IBM System z9 and zSeries.
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*
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* (C) Copyright IBM Corp. 2002, 2006
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "zfcp_ext.h"
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static int zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *);
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static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_open_port_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_close_port_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_send_fcp_command_task_management_handler(
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struct zfcp_fsf_req *);
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static int zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_status_read_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *);
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static int zfcp_fsf_control_file_handler(struct zfcp_fsf_req *);
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static inline int zfcp_fsf_req_sbal_check(
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unsigned long *, struct zfcp_qdio_queue *, int);
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static inline int zfcp_use_one_sbal(
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struct scatterlist *, int, struct scatterlist *, int);
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static struct zfcp_fsf_req *zfcp_fsf_req_alloc(mempool_t *, int);
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static int zfcp_fsf_req_send(struct zfcp_fsf_req *);
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static int zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *);
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static int zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *);
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static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *);
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static void zfcp_fsf_link_down_info_eval(struct zfcp_adapter *,
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struct fsf_link_down_info *);
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static int zfcp_fsf_req_dispatch(struct zfcp_fsf_req *);
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/* association between FSF command and FSF QTCB type */
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static u32 fsf_qtcb_type[] = {
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[FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
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[FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
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[FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
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[FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
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};
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static const char zfcp_act_subtable_type[5][8] = {
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"unknown", "OS", "WWPN", "DID", "LUN"
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};
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/****************************************************************/
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/*************** FSF related Functions *************************/
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/****************************************************************/
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#define ZFCP_LOG_AREA ZFCP_LOG_AREA_FSF
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/*
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* function: zfcp_fsf_req_alloc
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*
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* purpose: Obtains an fsf_req and potentially a qtcb (for all but
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* unsolicited requests) via helper functions
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* Does some initial fsf request set-up.
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*
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* returns: pointer to allocated fsf_req if successfull
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* NULL otherwise
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*
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* locks: none
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*
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*/
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static struct zfcp_fsf_req *
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zfcp_fsf_req_alloc(mempool_t *pool, int req_flags)
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{
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size_t size;
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void *ptr;
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struct zfcp_fsf_req *fsf_req = NULL;
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if (req_flags & ZFCP_REQ_NO_QTCB)
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size = sizeof(struct zfcp_fsf_req);
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else
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size = sizeof(struct zfcp_fsf_req_qtcb);
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if (likely(pool))
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ptr = mempool_alloc(pool, GFP_ATOMIC);
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else {
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if (req_flags & ZFCP_REQ_NO_QTCB)
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ptr = kmalloc(size, GFP_ATOMIC);
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else
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ptr = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache,
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GFP_ATOMIC);
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}
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if (unlikely(!ptr))
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goto out;
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memset(ptr, 0, size);
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if (req_flags & ZFCP_REQ_NO_QTCB) {
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fsf_req = (struct zfcp_fsf_req *) ptr;
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} else {
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fsf_req = &((struct zfcp_fsf_req_qtcb *) ptr)->fsf_req;
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fsf_req->qtcb = &((struct zfcp_fsf_req_qtcb *) ptr)->qtcb;
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}
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fsf_req->pool = pool;
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out:
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return fsf_req;
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}
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/*
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* function: zfcp_fsf_req_free
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*
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* purpose: Frees the memory of an fsf_req (and potentially a qtcb) or
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* returns it into the pool via helper functions.
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*
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* returns: sod all
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*
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* locks: none
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*/
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void
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zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req)
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{
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if (likely(fsf_req->pool)) {
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mempool_free(fsf_req, fsf_req->pool);
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return;
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}
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if (fsf_req->qtcb) {
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kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, fsf_req);
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return;
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}
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kfree(fsf_req);
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}
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/*
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* Never ever call this without shutting down the adapter first.
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* Otherwise the adapter would continue using and corrupting s390 storage.
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* Included BUG_ON() call to ensure this is done.
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* ERP is supposed to be the only user of this function.
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*/
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void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
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{
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struct zfcp_fsf_req *fsf_req, *tmp;
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unsigned long flags;
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LIST_HEAD(remove_queue);
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unsigned int i;
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BUG_ON(atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status));
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spin_lock_irqsave(&adapter->req_list_lock, flags);
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atomic_set(&adapter->reqs_active, 0);
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for (i = 0; i < REQUEST_LIST_SIZE; i++)
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list_splice_init(&adapter->req_list[i], &remove_queue);
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spin_unlock_irqrestore(&adapter->req_list_lock, flags);
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list_for_each_entry_safe(fsf_req, tmp, &remove_queue, list) {
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list_del(&fsf_req->list);
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fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
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zfcp_fsf_req_complete(fsf_req);
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}
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}
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/*
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* function: zfcp_fsf_req_complete
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*
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* purpose: Updates active counts and timers for openfcp-reqs
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* May cleanup request after req_eval returns
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*
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* returns: 0 - success
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* !0 - failure
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*
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* context:
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*/
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int
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zfcp_fsf_req_complete(struct zfcp_fsf_req *fsf_req)
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{
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int retval = 0;
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int cleanup;
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if (unlikely(fsf_req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
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ZFCP_LOG_DEBUG("Status read response received\n");
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/*
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* Note: all cleanup handling is done in the callchain of
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* the function call-chain below.
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*/
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zfcp_fsf_status_read_handler(fsf_req);
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goto out;
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} else {
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del_timer(&fsf_req->timer);
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zfcp_fsf_protstatus_eval(fsf_req);
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}
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/*
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* fsf_req may be deleted due to waking up functions, so
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* cleanup is saved here and used later
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*/
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if (likely(fsf_req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
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cleanup = 1;
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else
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cleanup = 0;
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fsf_req->status |= ZFCP_STATUS_FSFREQ_COMPLETED;
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/* cleanup request if requested by initiator */
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if (likely(cleanup)) {
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ZFCP_LOG_TRACE("removing FSF request %p\n", fsf_req);
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/*
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* lock must not be held here since it will be
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* grabed by the called routine, too
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*/
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zfcp_fsf_req_free(fsf_req);
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} else {
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/* notify initiator waiting for the requests completion */
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ZFCP_LOG_TRACE("waking initiator of FSF request %p\n",fsf_req);
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/*
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* FIXME: Race! We must not access fsf_req here as it might have been
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* cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
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* flag. It's an improbable case. But, we have the same paranoia for
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* the cleanup flag already.
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* Might better be handled using complete()?
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* (setting the flag and doing wakeup ought to be atomic
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* with regard to checking the flag as long as waitqueue is
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* part of the to be released structure)
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*/
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wake_up(&fsf_req->completion_wq);
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}
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out:
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return retval;
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}
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/*
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* function: zfcp_fsf_protstatus_eval
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*
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* purpose: evaluates the QTCB of the finished FSF request
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* and initiates appropriate actions
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* (usually calling FSF command specific handlers)
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*
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* returns:
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*
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* context:
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*
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* locks:
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*/
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static int
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zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *fsf_req)
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{
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int retval = 0;
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struct zfcp_adapter *adapter = fsf_req->adapter;
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struct fsf_qtcb *qtcb = fsf_req->qtcb;
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union fsf_prot_status_qual *prot_status_qual =
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&qtcb->prefix.prot_status_qual;
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zfcp_hba_dbf_event_fsf_response(fsf_req);
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if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
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ZFCP_LOG_DEBUG("fsf_req 0x%lx has been dismissed\n",
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(unsigned long) fsf_req);
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fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
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ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */
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goto skip_protstatus;
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}
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/* log additional information provided by FSF (if any) */
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if (likely(qtcb->header.log_length)) {
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/* do not trust them ;-) */
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if (unlikely(qtcb->header.log_start >
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sizeof(struct fsf_qtcb))) {
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ZFCP_LOG_NORMAL
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("bug: ULP (FSF logging) log data starts "
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"beyond end of packet header. Ignored. "
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"(start=%i, size=%li)\n",
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qtcb->header.log_start,
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sizeof(struct fsf_qtcb));
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goto forget_log;
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}
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if (unlikely((size_t) (qtcb->header.log_start +
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qtcb->header.log_length) >
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sizeof(struct fsf_qtcb))) {
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ZFCP_LOG_NORMAL("bug: ULP (FSF logging) log data ends "
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"beyond end of packet header. Ignored. "
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"(start=%i, length=%i, size=%li)\n",
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qtcb->header.log_start,
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qtcb->header.log_length,
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sizeof(struct fsf_qtcb));
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goto forget_log;
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}
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ZFCP_LOG_TRACE("ULP log data: \n");
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ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE,
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(char *) qtcb + qtcb->header.log_start,
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qtcb->header.log_length);
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}
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forget_log:
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/* evaluate FSF Protocol Status */
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switch (qtcb->prefix.prot_status) {
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case FSF_PROT_GOOD:
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case FSF_PROT_FSF_STATUS_PRESENTED:
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break;
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case FSF_PROT_QTCB_VERSION_ERROR:
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ZFCP_LOG_NORMAL("error: The adapter %s contains "
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"microcode of version 0x%x, the device driver "
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"only supports 0x%x. Aborting.\n",
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zfcp_get_busid_by_adapter(adapter),
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prot_status_qual->version_error.fsf_version,
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ZFCP_QTCB_VERSION);
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zfcp_erp_adapter_shutdown(adapter, 0);
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fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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break;
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case FSF_PROT_SEQ_NUMB_ERROR:
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ZFCP_LOG_NORMAL("bug: Sequence number mismatch between "
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"driver (0x%x) and adapter %s (0x%x). "
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"Restarting all operations on this adapter.\n",
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qtcb->prefix.req_seq_no,
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zfcp_get_busid_by_adapter(adapter),
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prot_status_qual->sequence_error.exp_req_seq_no);
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zfcp_erp_adapter_reopen(adapter, 0);
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fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY;
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fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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break;
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case FSF_PROT_UNSUPP_QTCB_TYPE:
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ZFCP_LOG_NORMAL("error: Packet header type used by the "
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"device driver is incompatible with "
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"that used on adapter %s. "
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"Stopping all operations on this adapter.\n",
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zfcp_get_busid_by_adapter(adapter));
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zfcp_erp_adapter_shutdown(adapter, 0);
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fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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break;
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case FSF_PROT_HOST_CONNECTION_INITIALIZING:
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fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
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&(adapter->status));
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break;
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case FSF_PROT_DUPLICATE_REQUEST_ID:
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ZFCP_LOG_NORMAL("bug: The request identifier 0x%Lx "
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"to the adapter %s is ambiguous. "
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"Stopping all operations on this adapter.\n",
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*(unsigned long long*)
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(&qtcb->bottom.support.req_handle),
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zfcp_get_busid_by_adapter(adapter));
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zfcp_erp_adapter_shutdown(adapter, 0);
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fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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break;
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case FSF_PROT_LINK_DOWN:
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zfcp_fsf_link_down_info_eval(adapter,
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&prot_status_qual->link_down_info);
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zfcp_erp_adapter_reopen(adapter, 0);
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fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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break;
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case FSF_PROT_REEST_QUEUE:
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ZFCP_LOG_NORMAL("The local link to adapter with "
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"%s was re-plugged. "
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"Re-starting operations on this adapter.\n",
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zfcp_get_busid_by_adapter(adapter));
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/* All ports should be marked as ready to run again */
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zfcp_erp_modify_adapter_status(adapter,
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ZFCP_STATUS_COMMON_RUNNING,
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ZFCP_SET);
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zfcp_erp_adapter_reopen(adapter,
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ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
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| ZFCP_STATUS_COMMON_ERP_FAILED);
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fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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break;
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case FSF_PROT_ERROR_STATE:
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ZFCP_LOG_NORMAL("error: The adapter %s "
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"has entered the error state. "
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"Restarting all operations on this "
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"adapter.\n",
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zfcp_get_busid_by_adapter(adapter));
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zfcp_erp_adapter_reopen(adapter, 0);
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fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY;
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fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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break;
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default:
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ZFCP_LOG_NORMAL("bug: Transfer protocol status information "
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"provided by the adapter %s "
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"is not compatible with the device driver. "
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"Stopping all operations on this adapter. "
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"(debug info 0x%x).\n",
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zfcp_get_busid_by_adapter(adapter),
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qtcb->prefix.prot_status);
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zfcp_erp_adapter_shutdown(adapter, 0);
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fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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}
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skip_protstatus:
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/*
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* always call specific handlers to give them a chance to do
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* something meaningful even in error cases
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*/
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zfcp_fsf_fsfstatus_eval(fsf_req);
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return retval;
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}
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|
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/*
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* function: zfcp_fsf_fsfstatus_eval
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*
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* purpose: evaluates FSF status of completed FSF request
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* and acts accordingly
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*
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* returns:
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*/
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static int
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zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *fsf_req)
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{
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int retval = 0;
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|
|
if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
/* evaluate FSF Status */
|
|
switch (fsf_req->qtcb->header.fsf_status) {
|
|
case FSF_UNKNOWN_COMMAND:
|
|
ZFCP_LOG_NORMAL("bug: Command issued by the device driver is "
|
|
"not known by the adapter %s "
|
|
"Stopping all operations on this adapter. "
|
|
"(debug info 0x%x).\n",
|
|
zfcp_get_busid_by_adapter(fsf_req->adapter),
|
|
fsf_req->qtcb->header.fsf_command);
|
|
zfcp_erp_adapter_shutdown(fsf_req->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_FCP_RSP_AVAILABLE:
|
|
ZFCP_LOG_DEBUG("FCP Sense data will be presented to the "
|
|
"SCSI stack.\n");
|
|
break;
|
|
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
zfcp_fsf_fsfstatus_qual_eval(fsf_req);
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
/*
|
|
* always call specific handlers to give them a chance to do
|
|
* something meaningful even in error cases
|
|
*/
|
|
zfcp_fsf_req_dispatch(fsf_req);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_fsfstatus_qual_eval
|
|
*
|
|
* purpose: evaluates FSF status-qualifier of completed FSF request
|
|
* and acts accordingly
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
int retval = 0;
|
|
|
|
switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) {
|
|
case FSF_SQ_FCP_RSP_AVAILABLE:
|
|
break;
|
|
case FSF_SQ_RETRY_IF_POSSIBLE:
|
|
/* The SCSI-stack may now issue retries or escalate */
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_COMMAND_ABORTED:
|
|
/* Carry the aborted state on to upper layer */
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTED;
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_NO_RECOM:
|
|
ZFCP_LOG_NORMAL("bug: No recommendation could be given for a "
|
|
"problem on the adapter %s "
|
|
"Stopping all operations on this adapter. ",
|
|
zfcp_get_busid_by_adapter(fsf_req->adapter));
|
|
zfcp_erp_adapter_shutdown(fsf_req->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_ULP_PROGRAMMING_ERROR:
|
|
ZFCP_LOG_NORMAL("error: not enough SBALs for data transfer "
|
|
"(adapter %s)\n",
|
|
zfcp_get_busid_by_adapter(fsf_req->adapter));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
case FSF_SQ_NO_RETRY_POSSIBLE:
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
/* dealt with in the respective functions */
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: Additional status info could "
|
|
"not be interpreted properly.\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
|
|
(char *) &fsf_req->qtcb->header.fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_link_down_info_eval - evaluate link down information block
|
|
*/
|
|
static void
|
|
zfcp_fsf_link_down_info_eval(struct zfcp_adapter *adapter,
|
|
struct fsf_link_down_info *link_down)
|
|
{
|
|
if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED,
|
|
&adapter->status))
|
|
return;
|
|
|
|
atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
|
|
|
|
if (link_down == NULL)
|
|
goto out;
|
|
|
|
switch (link_down->error_code) {
|
|
case FSF_PSQ_LINK_NO_LIGHT:
|
|
ZFCP_LOG_NORMAL("The local link to adapter %s is down "
|
|
"(no light detected)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_WRAP_PLUG:
|
|
ZFCP_LOG_NORMAL("The local link to adapter %s is down "
|
|
"(wrap plug detected)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_NO_FCP:
|
|
ZFCP_LOG_NORMAL("The local link to adapter %s is down "
|
|
"(adjacent node on link does not support FCP)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_FIRMWARE_UPDATE:
|
|
ZFCP_LOG_NORMAL("The local link to adapter %s is down "
|
|
"(firmware update in progress)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_INVALID_WWPN:
|
|
ZFCP_LOG_NORMAL("The local link to adapter %s is down "
|
|
"(duplicate or invalid WWPN detected)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
|
|
ZFCP_LOG_NORMAL("The local link to adapter %s is down "
|
|
"(no support for NPIV by Fabric)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_NO_FCP_RESOURCES:
|
|
ZFCP_LOG_NORMAL("The local link to adapter %s is down "
|
|
"(out of resource in FCP daughtercard)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
|
|
ZFCP_LOG_NORMAL("The local link to adapter %s is down "
|
|
"(out of resource in Fabric)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
|
|
ZFCP_LOG_NORMAL("The local link to adapter %s is down "
|
|
"(unable to Fabric login)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
|
|
ZFCP_LOG_NORMAL("WWPN assignment file corrupted on adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
|
|
ZFCP_LOG_NORMAL("Mode table corrupted on adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
|
|
ZFCP_LOG_NORMAL("No WWPN for assignment table on adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL("The local link to adapter %s is down "
|
|
"(warning: unknown reason code %d)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
link_down->error_code);
|
|
}
|
|
|
|
if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
|
|
ZFCP_LOG_DEBUG("Debug information to link down: "
|
|
"primary_status=0x%02x "
|
|
"ioerr_code=0x%02x "
|
|
"action_code=0x%02x "
|
|
"reason_code=0x%02x "
|
|
"explanation_code=0x%02x "
|
|
"vendor_specific_code=0x%02x\n",
|
|
link_down->primary_status,
|
|
link_down->ioerr_code,
|
|
link_down->action_code,
|
|
link_down->reason_code,
|
|
link_down->explanation_code,
|
|
link_down->vendor_specific_code);
|
|
|
|
out:
|
|
zfcp_erp_adapter_failed(adapter);
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_req_dispatch
|
|
*
|
|
* purpose: calls the appropriate command specific handler
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_req_dispatch(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
struct zfcp_erp_action *erp_action = fsf_req->erp_action;
|
|
struct zfcp_adapter *adapter = fsf_req->adapter;
|
|
int retval = 0;
|
|
|
|
|
|
switch (fsf_req->fsf_command) {
|
|
|
|
case FSF_QTCB_FCP_CMND:
|
|
zfcp_fsf_send_fcp_command_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_ABORT_FCP_CMND:
|
|
zfcp_fsf_abort_fcp_command_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_SEND_GENERIC:
|
|
zfcp_fsf_send_ct_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_OPEN_PORT_WITH_DID:
|
|
zfcp_fsf_open_port_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_OPEN_LUN:
|
|
zfcp_fsf_open_unit_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_CLOSE_LUN:
|
|
zfcp_fsf_close_unit_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_CLOSE_PORT:
|
|
zfcp_fsf_close_port_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_CLOSE_PHYSICAL_PORT:
|
|
zfcp_fsf_close_physical_port_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_EXCHANGE_CONFIG_DATA:
|
|
zfcp_fsf_exchange_config_data_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_EXCHANGE_PORT_DATA:
|
|
zfcp_fsf_exchange_port_data_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_SEND_ELS:
|
|
zfcp_fsf_send_els_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
|
|
zfcp_fsf_control_file_handler(fsf_req);
|
|
break;
|
|
|
|
case FSF_QTCB_UPLOAD_CONTROL_FILE:
|
|
zfcp_fsf_control_file_handler(fsf_req);
|
|
break;
|
|
|
|
default:
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
ZFCP_LOG_NORMAL("bug: Command issued by the device driver is "
|
|
"not supported by the adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
if (fsf_req->fsf_command != fsf_req->qtcb->header.fsf_command)
|
|
ZFCP_LOG_NORMAL
|
|
("bug: Command issued by the device driver differs "
|
|
"from the command returned by the adapter %s "
|
|
"(debug info 0x%x, 0x%x).\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
fsf_req->fsf_command,
|
|
fsf_req->qtcb->header.fsf_command);
|
|
}
|
|
|
|
if (!erp_action)
|
|
return retval;
|
|
|
|
zfcp_erp_async_handler(erp_action, 0);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_status_read
|
|
*
|
|
* purpose: initiates a Status Read command at the specified adapter
|
|
*
|
|
* returns:
|
|
*/
|
|
int
|
|
zfcp_fsf_status_read(struct zfcp_adapter *adapter, int req_flags)
|
|
{
|
|
struct zfcp_fsf_req *fsf_req;
|
|
struct fsf_status_read_buffer *status_buffer;
|
|
unsigned long lock_flags;
|
|
volatile struct qdio_buffer_element *sbale;
|
|
int retval = 0;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS,
|
|
req_flags | ZFCP_REQ_NO_QTCB,
|
|
adapter->pool.fsf_req_status_read,
|
|
&lock_flags, &fsf_req);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("error: Could not create unsolicited status "
|
|
"buffer for adapter %s.\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
goto failed_req_create;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS;
|
|
sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
fsf_req->sbale_curr = 2;
|
|
|
|
status_buffer =
|
|
mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC);
|
|
if (!status_buffer) {
|
|
ZFCP_LOG_NORMAL("bug: could not get some buffer\n");
|
|
goto failed_buf;
|
|
}
|
|
memset(status_buffer, 0, sizeof (struct fsf_status_read_buffer));
|
|
fsf_req->data = (unsigned long) status_buffer;
|
|
|
|
/* insert pointer to respective buffer */
|
|
sbale = zfcp_qdio_sbale_curr(fsf_req);
|
|
sbale->addr = (void *) status_buffer;
|
|
sbale->length = sizeof(struct fsf_status_read_buffer);
|
|
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
if (retval) {
|
|
ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status "
|
|
"environment.\n");
|
|
goto failed_req_send;
|
|
}
|
|
|
|
ZFCP_LOG_TRACE("Status Read request initiated (adapter%s)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
goto out;
|
|
|
|
failed_req_send:
|
|
mempool_free(status_buffer, adapter->pool.data_status_read);
|
|
|
|
failed_buf:
|
|
zfcp_fsf_req_free(fsf_req);
|
|
failed_req_create:
|
|
zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL);
|
|
out:
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
static int
|
|
zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
struct fsf_status_read_buffer *status_buffer;
|
|
struct zfcp_adapter *adapter;
|
|
struct zfcp_port *port;
|
|
unsigned long flags;
|
|
|
|
status_buffer = (struct fsf_status_read_buffer *) fsf_req->data;
|
|
adapter = fsf_req->adapter;
|
|
|
|
read_lock_irqsave(&zfcp_data.config_lock, flags);
|
|
list_for_each_entry(port, &adapter->port_list_head, list)
|
|
if (port->d_id == (status_buffer->d_id & ZFCP_DID_MASK))
|
|
break;
|
|
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
|
|
|
|
if (!port || (port->d_id != (status_buffer->d_id & ZFCP_DID_MASK))) {
|
|
ZFCP_LOG_NORMAL("bug: Reopen port indication received for "
|
|
"nonexisting port with d_id 0x%06x on "
|
|
"adapter %s. Ignored.\n",
|
|
status_buffer->d_id & ZFCP_DID_MASK,
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
goto out;
|
|
}
|
|
|
|
switch (status_buffer->status_subtype) {
|
|
|
|
case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT:
|
|
debug_text_event(adapter->erp_dbf, 3, "unsol_pc_phys:");
|
|
zfcp_erp_port_reopen(port, 0);
|
|
break;
|
|
|
|
case FSF_STATUS_READ_SUB_ERROR_PORT:
|
|
debug_text_event(adapter->erp_dbf, 1, "unsol_pc_err:");
|
|
zfcp_erp_port_shutdown(port, 0);
|
|
break;
|
|
|
|
default:
|
|
debug_text_event(adapter->erp_dbf, 0, "unsol_unk_sub:");
|
|
debug_exception(adapter->erp_dbf, 0,
|
|
&status_buffer->status_subtype, sizeof (u32));
|
|
ZFCP_LOG_NORMAL("bug: Undefined status subtype received "
|
|
"for a reopen indication on port with "
|
|
"d_id 0x%06x on the adapter %s. "
|
|
"Ignored. (debug info 0x%x)\n",
|
|
status_buffer->d_id,
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
status_buffer->status_subtype);
|
|
}
|
|
out:
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_status_read_handler
|
|
*
|
|
* purpose: is called for finished Open Port command
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_status_read_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
int retval = 0;
|
|
struct zfcp_adapter *adapter = fsf_req->adapter;
|
|
struct fsf_status_read_buffer *status_buffer =
|
|
(struct fsf_status_read_buffer *) fsf_req->data;
|
|
struct fsf_bit_error_payload *fsf_bit_error;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
|
|
zfcp_hba_dbf_event_fsf_unsol("dism", adapter, status_buffer);
|
|
mempool_free(status_buffer, adapter->pool.data_status_read);
|
|
zfcp_fsf_req_free(fsf_req);
|
|
goto out;
|
|
}
|
|
|
|
zfcp_hba_dbf_event_fsf_unsol("read", adapter, status_buffer);
|
|
|
|
switch (status_buffer->status_type) {
|
|
|
|
case FSF_STATUS_READ_PORT_CLOSED:
|
|
zfcp_fsf_status_read_port_closed(fsf_req);
|
|
break;
|
|
|
|
case FSF_STATUS_READ_INCOMING_ELS:
|
|
zfcp_fsf_incoming_els(fsf_req);
|
|
break;
|
|
|
|
case FSF_STATUS_READ_SENSE_DATA_AVAIL:
|
|
ZFCP_LOG_INFO("unsolicited sense data received (adapter %s)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
|
|
case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
|
|
fsf_bit_error = (struct fsf_bit_error_payload *)
|
|
status_buffer->payload;
|
|
ZFCP_LOG_NORMAL("Warning: bit error threshold data "
|
|
"received (adapter %s, "
|
|
"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",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
fsf_bit_error->link_failure_error_count,
|
|
fsf_bit_error->loss_of_sync_error_count,
|
|
fsf_bit_error->loss_of_signal_error_count,
|
|
fsf_bit_error->primitive_sequence_error_count,
|
|
fsf_bit_error->invalid_transmission_word_error_count,
|
|
fsf_bit_error->crc_error_count);
|
|
ZFCP_LOG_INFO("Additional bit error threshold data "
|
|
"(adapter %s, "
|
|
"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",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
fsf_bit_error->primitive_sequence_event_timeout_count,
|
|
fsf_bit_error->elastic_buffer_overrun_error_count,
|
|
fsf_bit_error->advertised_receive_b2b_credit,
|
|
fsf_bit_error->current_receive_b2b_credit,
|
|
fsf_bit_error->advertised_transmit_b2b_credit,
|
|
fsf_bit_error->current_transmit_b2b_credit);
|
|
break;
|
|
|
|
case FSF_STATUS_READ_LINK_DOWN:
|
|
switch (status_buffer->status_subtype) {
|
|
case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
|
|
ZFCP_LOG_INFO("Physical link to adapter %s is down\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
zfcp_fsf_link_down_info_eval(adapter,
|
|
(struct fsf_link_down_info *)
|
|
&status_buffer->payload);
|
|
break;
|
|
case FSF_STATUS_READ_SUB_FDISC_FAILED:
|
|
ZFCP_LOG_INFO("Local link to adapter %s is down "
|
|
"due to failed FDISC login\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
zfcp_fsf_link_down_info_eval(adapter,
|
|
(struct fsf_link_down_info *)
|
|
&status_buffer->payload);
|
|
break;
|
|
case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
|
|
ZFCP_LOG_INFO("Local link to adapter %s is down "
|
|
"due to firmware update on adapter\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
zfcp_fsf_link_down_info_eval(adapter, NULL);
|
|
break;
|
|
default:
|
|
ZFCP_LOG_INFO("Local link to adapter %s is down "
|
|
"due to unknown reason\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
zfcp_fsf_link_down_info_eval(adapter, NULL);
|
|
};
|
|
break;
|
|
|
|
case FSF_STATUS_READ_LINK_UP:
|
|
ZFCP_LOG_NORMAL("Local link to adapter %s was replugged. "
|
|
"Restarting operations on this adapter\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
/* All ports should be marked as ready to run again */
|
|
zfcp_erp_modify_adapter_status(adapter,
|
|
ZFCP_STATUS_COMMON_RUNNING,
|
|
ZFCP_SET);
|
|
zfcp_erp_adapter_reopen(adapter,
|
|
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
|
| ZFCP_STATUS_COMMON_ERP_FAILED);
|
|
break;
|
|
|
|
case FSF_STATUS_READ_NOTIFICATION_LOST:
|
|
ZFCP_LOG_NORMAL("Unsolicited status notification(s) lost: "
|
|
"adapter %s%s%s%s%s%s%s%s%s\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
(status_buffer->status_subtype &
|
|
FSF_STATUS_READ_SUB_INCOMING_ELS) ?
|
|
", incoming ELS" : "",
|
|
(status_buffer->status_subtype &
|
|
FSF_STATUS_READ_SUB_SENSE_DATA) ?
|
|
", sense data" : "",
|
|
(status_buffer->status_subtype &
|
|
FSF_STATUS_READ_SUB_LINK_STATUS) ?
|
|
", link status change" : "",
|
|
(status_buffer->status_subtype &
|
|
FSF_STATUS_READ_SUB_PORT_CLOSED) ?
|
|
", port close" : "",
|
|
(status_buffer->status_subtype &
|
|
FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD) ?
|
|
", bit error exception" : "",
|
|
(status_buffer->status_subtype &
|
|
FSF_STATUS_READ_SUB_ACT_UPDATED) ?
|
|
", ACT update" : "",
|
|
(status_buffer->status_subtype &
|
|
FSF_STATUS_READ_SUB_ACT_HARDENED) ?
|
|
", ACT hardening" : "",
|
|
(status_buffer->status_subtype &
|
|
FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT) ?
|
|
", adapter feature change" : "");
|
|
|
|
if (status_buffer->status_subtype &
|
|
FSF_STATUS_READ_SUB_ACT_UPDATED)
|
|
zfcp_erp_adapter_access_changed(adapter);
|
|
break;
|
|
|
|
case FSF_STATUS_READ_CFDC_UPDATED:
|
|
ZFCP_LOG_NORMAL("CFDC has been updated on the adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
zfcp_erp_adapter_access_changed(adapter);
|
|
break;
|
|
|
|
case FSF_STATUS_READ_CFDC_HARDENED:
|
|
switch (status_buffer->status_subtype) {
|
|
case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE:
|
|
ZFCP_LOG_NORMAL("CFDC of adapter %s saved on SE\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2:
|
|
ZFCP_LOG_NORMAL("CFDC of adapter %s has been copied "
|
|
"to the secondary SE\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL("CFDC of adapter %s has been hardened\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
}
|
|
break;
|
|
|
|
case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
|
|
debug_text_event(adapter->erp_dbf, 2, "unsol_features:");
|
|
ZFCP_LOG_INFO("List of supported features on adapter %s has "
|
|
"been changed from 0x%08X to 0x%08X\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
*(u32*) (status_buffer->payload + 4),
|
|
*(u32*) (status_buffer->payload));
|
|
adapter->adapter_features = *(u32*) status_buffer->payload;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL("warning: An unsolicited status packet of unknown "
|
|
"type was received (debug info 0x%x)\n",
|
|
status_buffer->status_type);
|
|
ZFCP_LOG_DEBUG("Dump of status_read_buffer %p:\n",
|
|
status_buffer);
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) status_buffer,
|
|
sizeof (struct fsf_status_read_buffer));
|
|
break;
|
|
}
|
|
mempool_free(status_buffer, adapter->pool.data_status_read);
|
|
zfcp_fsf_req_free(fsf_req);
|
|
/*
|
|
* recycle buffer and start new request repeat until outbound
|
|
* queue is empty or adapter shutdown is requested
|
|
*/
|
|
/*
|
|
* FIXME(qdio):
|
|
* we may wait in the req_create for 5s during shutdown, so
|
|
* qdio_cleanup will have to wait at least that long before returning
|
|
* with failure to allow us a proper cleanup under all circumstances
|
|
*/
|
|
/*
|
|
* FIXME:
|
|
* allocation failure possible? (Is this code needed?)
|
|
*/
|
|
retval = zfcp_fsf_status_read(adapter, 0);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("Failed to create unsolicited status read "
|
|
"request for the adapter %s.\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
/* temporary fix to avoid status read buffer shortage */
|
|
adapter->status_read_failed++;
|
|
if ((ZFCP_STATUS_READS_RECOM - adapter->status_read_failed)
|
|
< ZFCP_STATUS_READ_FAILED_THRESHOLD) {
|
|
ZFCP_LOG_INFO("restart adapter %s due to status read "
|
|
"buffer shortage\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
zfcp_erp_adapter_reopen(adapter, 0);
|
|
}
|
|
}
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_abort_fcp_command
|
|
*
|
|
* purpose: tells FSF to abort a running SCSI command
|
|
*
|
|
* returns: address of initiated FSF request
|
|
* NULL - request could not be initiated
|
|
*
|
|
* FIXME(design): should be watched by a timeout !!!
|
|
* FIXME(design) shouldn't this be modified to return an int
|
|
* also...don't know how though
|
|
*/
|
|
struct zfcp_fsf_req *
|
|
zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
|
|
struct zfcp_adapter *adapter,
|
|
struct zfcp_unit *unit, int req_flags)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req = NULL;
|
|
unsigned long lock_flags;
|
|
int retval = 0;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND,
|
|
req_flags, adapter->pool.fsf_req_abort,
|
|
&lock_flags, &fsf_req);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("error: Failed to create an abort command "
|
|
"request for lun 0x%016Lx on port 0x%016Lx "
|
|
"on adapter %s.\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
goto out;
|
|
}
|
|
|
|
if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
|
|
&unit->status)))
|
|
goto unit_blocked;
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
fsf_req->data = (unsigned long) unit;
|
|
|
|
/* set handles of unit and its parent port in QTCB */
|
|
fsf_req->qtcb->header.lun_handle = unit->handle;
|
|
fsf_req->qtcb->header.port_handle = unit->port->handle;
|
|
|
|
/* set handle of request which should be aborted */
|
|
fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id;
|
|
|
|
zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT);
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
if (!retval)
|
|
goto out;
|
|
|
|
unit_blocked:
|
|
zfcp_fsf_req_free(fsf_req);
|
|
fsf_req = NULL;
|
|
|
|
out:
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
|
|
return fsf_req;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_abort_fcp_command_handler
|
|
*
|
|
* purpose: is called for finished Abort FCP Command request
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req)
|
|
{
|
|
int retval = -EINVAL;
|
|
struct zfcp_unit *unit;
|
|
union fsf_status_qual *fsf_stat_qual =
|
|
&new_fsf_req->qtcb->header.fsf_status_qual;
|
|
|
|
if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
|
|
/* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
unit = (struct zfcp_unit *) new_fsf_req->data;
|
|
|
|
/* evaluate FSF status in QTCB */
|
|
switch (new_fsf_req->qtcb->header.fsf_status) {
|
|
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
if (fsf_stat_qual->word[0] != fsf_stat_qual->word[1]) {
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 3,
|
|
"fsf_s_phand_nv0");
|
|
/*
|
|
* In this case a command that was sent prior to a port
|
|
* reopen was aborted (handles are different). This is
|
|
* fine.
|
|
*/
|
|
} else {
|
|
ZFCP_LOG_INFO("Temporary port identifier 0x%x for "
|
|
"port 0x%016Lx on adapter %s invalid. "
|
|
"This may happen occasionally.\n",
|
|
unit->port->handle,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
ZFCP_LOG_INFO("status qualifier:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
|
|
(char *) &new_fsf_req->qtcb->header.
|
|
fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
/* Let's hope this sorts out the mess */
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_phand_nv1");
|
|
zfcp_erp_adapter_reopen(unit->port->adapter, 0);
|
|
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
}
|
|
break;
|
|
|
|
case FSF_LUN_HANDLE_NOT_VALID:
|
|
if (fsf_stat_qual->word[0] != fsf_stat_qual->word[1]) {
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 3,
|
|
"fsf_s_lhand_nv0");
|
|
/*
|
|
* In this case a command that was sent prior to a unit
|
|
* reopen was aborted (handles are different).
|
|
* This is fine.
|
|
*/
|
|
} else {
|
|
ZFCP_LOG_INFO
|
|
("Warning: Temporary LUN identifier 0x%x of LUN "
|
|
"0x%016Lx on port 0x%016Lx on adapter %s is "
|
|
"invalid. This may happen in rare cases. "
|
|
"Trying to re-establish link.\n",
|
|
unit->handle,
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
ZFCP_LOG_DEBUG("Status qualifier data:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &new_fsf_req->qtcb->header.
|
|
fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
/* Let's hope this sorts out the mess */
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_lhand_nv1");
|
|
zfcp_erp_port_reopen(unit->port, 0);
|
|
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
}
|
|
break;
|
|
|
|
case FSF_FCP_COMMAND_DOES_NOT_EXIST:
|
|
retval = 0;
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 3,
|
|
"fsf_s_no_exist");
|
|
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
|
|
break;
|
|
|
|
case FSF_PORT_BOXED:
|
|
ZFCP_LOG_INFO("Remote port 0x%016Lx on adapter %s needs to "
|
|
"be reopened\n", unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 2,
|
|
"fsf_s_pboxed");
|
|
zfcp_erp_port_boxed(unit->port);
|
|
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
|
|
| ZFCP_STATUS_FSFREQ_RETRY;
|
|
break;
|
|
|
|
case FSF_LUN_BOXED:
|
|
ZFCP_LOG_INFO(
|
|
"unit 0x%016Lx on port 0x%016Lx on adapter %s needs "
|
|
"to be reopened\n",
|
|
unit->fcp_lun, unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 1, "fsf_s_lboxed");
|
|
zfcp_erp_unit_boxed(unit);
|
|
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
|
|
| ZFCP_STATUS_FSFREQ_RETRY;
|
|
break;
|
|
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (new_fsf_req->qtcb->header.fsf_status_qual.word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_sq_ltest");
|
|
zfcp_test_link(unit->port);
|
|
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
/* SCSI stack will escalate */
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_sq_ulp");
|
|
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL
|
|
("bug: Wrong status qualifier 0x%x arrived.\n",
|
|
new_fsf_req->qtcb->header.fsf_status_qual.word[0]);
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_sq_inval:");
|
|
debug_exception(new_fsf_req->adapter->erp_dbf, 0,
|
|
&new_fsf_req->qtcb->header.
|
|
fsf_status_qual.word[0], sizeof (u32));
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case FSF_GOOD:
|
|
retval = 0;
|
|
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
|
|
"(debug info 0x%x)\n",
|
|
new_fsf_req->qtcb->header.fsf_status);
|
|
debug_text_event(new_fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_s_inval:");
|
|
debug_exception(new_fsf_req->adapter->erp_dbf, 0,
|
|
&new_fsf_req->qtcb->header.fsf_status,
|
|
sizeof (u32));
|
|
break;
|
|
}
|
|
skip_fsfstatus:
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* zfcp_use_one_sbal - checks whether req buffer and resp bother each fit into
|
|
* one SBALE
|
|
* Two scatter-gather lists are passed, one for the reqeust and one for the
|
|
* response.
|
|
*/
|
|
static inline int
|
|
zfcp_use_one_sbal(struct scatterlist *req, int req_count,
|
|
struct scatterlist *resp, int resp_count)
|
|
{
|
|
return ((req_count == 1) &&
|
|
(resp_count == 1) &&
|
|
(((unsigned long) zfcp_sg_to_address(&req[0]) &
|
|
PAGE_MASK) ==
|
|
((unsigned long) (zfcp_sg_to_address(&req[0]) +
|
|
req[0].length - 1) & PAGE_MASK)) &&
|
|
(((unsigned long) zfcp_sg_to_address(&resp[0]) &
|
|
PAGE_MASK) ==
|
|
((unsigned long) (zfcp_sg_to_address(&resp[0]) +
|
|
resp[0].length - 1) & PAGE_MASK)));
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
|
|
* @ct: pointer to struct zfcp_send_ct which conatins all needed data for
|
|
* the request
|
|
* @pool: pointer to memory pool, if non-null this pool is used to allocate
|
|
* a struct zfcp_fsf_req
|
|
* @erp_action: pointer to erp_action, if non-null the Generic Service request
|
|
* is sent within error recovery
|
|
*/
|
|
int
|
|
zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool,
|
|
struct zfcp_erp_action *erp_action)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_port *port;
|
|
struct zfcp_adapter *adapter;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
unsigned long lock_flags;
|
|
int bytes;
|
|
int ret = 0;
|
|
|
|
port = ct->port;
|
|
adapter = port->adapter;
|
|
|
|
ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC,
|
|
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
|
|
pool, &lock_flags, &fsf_req);
|
|
if (ret < 0) {
|
|
ZFCP_LOG_INFO("error: Could not create CT request (FC-GS) for "
|
|
"adapter: %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
goto failed_req;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
if (zfcp_use_one_sbal(ct->req, ct->req_count,
|
|
ct->resp, ct->resp_count)){
|
|
/* both request buffer and response buffer
|
|
fit into one sbale each */
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
|
|
sbale[2].addr = zfcp_sg_to_address(&ct->req[0]);
|
|
sbale[2].length = ct->req[0].length;
|
|
sbale[3].addr = zfcp_sg_to_address(&ct->resp[0]);
|
|
sbale[3].length = ct->resp[0].length;
|
|
sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
} else if (adapter->adapter_features &
|
|
FSF_FEATURE_ELS_CT_CHAINED_SBALS) {
|
|
/* try to use chained SBALs */
|
|
bytes = zfcp_qdio_sbals_from_sg(fsf_req,
|
|
SBAL_FLAGS0_TYPE_WRITE_READ,
|
|
ct->req, ct->req_count,
|
|
ZFCP_MAX_SBALS_PER_CT_REQ);
|
|
if (bytes <= 0) {
|
|
ZFCP_LOG_INFO("error: creation of CT request failed "
|
|
"on adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
if (bytes == 0)
|
|
ret = -ENOMEM;
|
|
else
|
|
ret = bytes;
|
|
|
|
goto failed_send;
|
|
}
|
|
fsf_req->qtcb->bottom.support.req_buf_length = bytes;
|
|
fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
|
|
bytes = zfcp_qdio_sbals_from_sg(fsf_req,
|
|
SBAL_FLAGS0_TYPE_WRITE_READ,
|
|
ct->resp, ct->resp_count,
|
|
ZFCP_MAX_SBALS_PER_CT_REQ);
|
|
if (bytes <= 0) {
|
|
ZFCP_LOG_INFO("error: creation of CT request failed "
|
|
"on adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
if (bytes == 0)
|
|
ret = -ENOMEM;
|
|
else
|
|
ret = bytes;
|
|
|
|
goto failed_send;
|
|
}
|
|
fsf_req->qtcb->bottom.support.resp_buf_length = bytes;
|
|
} else {
|
|
/* reject send generic request */
|
|
ZFCP_LOG_INFO(
|
|
"error: microcode does not support chained SBALs,"
|
|
"CT request too big (adapter %s)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
ret = -EOPNOTSUPP;
|
|
goto failed_send;
|
|
}
|
|
|
|
/* settings in QTCB */
|
|
fsf_req->qtcb->header.port_handle = port->handle;
|
|
fsf_req->qtcb->bottom.support.service_class =
|
|
ZFCP_FC_SERVICE_CLASS_DEFAULT;
|
|
fsf_req->qtcb->bottom.support.timeout = ct->timeout;
|
|
fsf_req->data = (unsigned long) ct;
|
|
|
|
zfcp_san_dbf_event_ct_request(fsf_req);
|
|
|
|
if (erp_action) {
|
|
erp_action->fsf_req = fsf_req;
|
|
fsf_req->erp_action = erp_action;
|
|
zfcp_erp_start_timer(fsf_req);
|
|
} else
|
|
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
|
|
ret = zfcp_fsf_req_send(fsf_req);
|
|
if (ret) {
|
|
ZFCP_LOG_DEBUG("error: initiation of CT request failed "
|
|
"(adapter %s, port 0x%016Lx)\n",
|
|
zfcp_get_busid_by_adapter(adapter), port->wwpn);
|
|
goto failed_send;
|
|
}
|
|
|
|
ZFCP_LOG_DEBUG("CT request initiated (adapter %s, port 0x%016Lx)\n",
|
|
zfcp_get_busid_by_adapter(adapter), port->wwpn);
|
|
goto out;
|
|
|
|
failed_send:
|
|
zfcp_fsf_req_free(fsf_req);
|
|
if (erp_action != NULL) {
|
|
erp_action->fsf_req = NULL;
|
|
}
|
|
failed_req:
|
|
out:
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_send_ct_handler - handler for Generic Service requests
|
|
* @fsf_req: pointer to struct zfcp_fsf_req
|
|
*
|
|
* Data specific for the Generic Service request is passed using
|
|
* fsf_req->data. There we find the pointer to struct zfcp_send_ct.
|
|
* Usually a specific handler for the CT request is called which is
|
|
* found in this structure.
|
|
*/
|
|
static int
|
|
zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
struct zfcp_port *port;
|
|
struct zfcp_adapter *adapter;
|
|
struct zfcp_send_ct *send_ct;
|
|
struct fsf_qtcb_header *header;
|
|
struct fsf_qtcb_bottom_support *bottom;
|
|
int retval = -EINVAL;
|
|
u16 subtable, rule, counter;
|
|
|
|
adapter = fsf_req->adapter;
|
|
send_ct = (struct zfcp_send_ct *) fsf_req->data;
|
|
port = send_ct->port;
|
|
header = &fsf_req->qtcb->header;
|
|
bottom = &fsf_req->qtcb->bottom.support;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
goto skip_fsfstatus;
|
|
|
|
/* evaluate FSF status in QTCB */
|
|
switch (header->fsf_status) {
|
|
|
|
case FSF_GOOD:
|
|
zfcp_san_dbf_event_ct_response(fsf_req);
|
|
retval = 0;
|
|
break;
|
|
|
|
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
|
|
ZFCP_LOG_INFO("error: adapter %s does not support fc "
|
|
"class %d.\n",
|
|
zfcp_get_busid_by_port(port),
|
|
ZFCP_FC_SERVICE_CLASS_DEFAULT);
|
|
/* stop operation for this adapter */
|
|
debug_text_exception(adapter->erp_dbf, 0, "fsf_s_class_nsup");
|
|
zfcp_erp_adapter_shutdown(adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]){
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
/* reopening link to port */
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest");
|
|
zfcp_test_link(port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
/* ERP strategy will escalate */
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ulp");
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
default:
|
|
ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x "
|
|
"arrived.\n",
|
|
header->fsf_status_qual.word[0]);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case FSF_ACCESS_DENIED:
|
|
ZFCP_LOG_NORMAL("access denied, cannot send generic service "
|
|
"command (adapter %s, port d_id=0x%06x)\n",
|
|
zfcp_get_busid_by_port(port), port->d_id);
|
|
for (counter = 0; counter < 2; counter++) {
|
|
subtable = header->fsf_status_qual.halfword[counter * 2];
|
|
rule = header->fsf_status_qual.halfword[counter * 2 + 1];
|
|
switch (subtable) {
|
|
case FSF_SQ_CFDC_SUBTABLE_OS:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
|
|
case FSF_SQ_CFDC_SUBTABLE_LUN:
|
|
ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
|
|
zfcp_act_subtable_type[subtable], rule);
|
|
break;
|
|
}
|
|
}
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_s_access");
|
|
zfcp_erp_port_access_denied(port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_GENERIC_COMMAND_REJECTED:
|
|
ZFCP_LOG_INFO("generic service command rejected "
|
|
"(adapter %s, port d_id=0x%06x)\n",
|
|
zfcp_get_busid_by_port(port), port->d_id);
|
|
ZFCP_LOG_INFO("status qualifier:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
|
|
(char *) &header->fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_s_gcom_rej");
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
ZFCP_LOG_DEBUG("Temporary port identifier 0x%x for port "
|
|
"0x%016Lx on adapter %s invalid. This may "
|
|
"happen occasionally.\n", port->handle,
|
|
port->wwpn, zfcp_get_busid_by_port(port));
|
|
ZFCP_LOG_INFO("status qualifier:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
|
|
(char *) &header->fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_s_phandle_nv");
|
|
zfcp_erp_adapter_reopen(adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_PORT_BOXED:
|
|
ZFCP_LOG_INFO("port needs to be reopened "
|
|
"(adapter %s, port d_id=0x%06x)\n",
|
|
zfcp_get_busid_by_port(port), port->d_id);
|
|
debug_text_event(adapter->erp_dbf, 2, "fsf_s_pboxed");
|
|
zfcp_erp_port_boxed(port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
|
|
| ZFCP_STATUS_FSFREQ_RETRY;
|
|
break;
|
|
|
|
/* following states should never occure, all cases avoided
|
|
in zfcp_fsf_send_ct - but who knows ... */
|
|
case FSF_PAYLOAD_SIZE_MISMATCH:
|
|
ZFCP_LOG_INFO("payload size mismatch (adapter: %s, "
|
|
"req_buf_length=%d, resp_buf_length=%d)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
bottom->req_buf_length, bottom->resp_buf_length);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_REQUEST_SIZE_TOO_LARGE:
|
|
ZFCP_LOG_INFO("request size too large (adapter: %s, "
|
|
"req_buf_length=%d)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
bottom->req_buf_length);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_RESPONSE_SIZE_TOO_LARGE:
|
|
ZFCP_LOG_INFO("response size too large (adapter: %s, "
|
|
"resp_buf_length=%d)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
bottom->resp_buf_length);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SBAL_MISMATCH:
|
|
ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, "
|
|
"resp_buf_length=%d)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
bottom->req_buf_length, bottom->resp_buf_length);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
|
|
"(debug info 0x%x)\n", header->fsf_status);
|
|
debug_text_event(adapter->erp_dbf, 0, "fsf_sq_inval:");
|
|
debug_exception(adapter->erp_dbf, 0,
|
|
&header->fsf_status_qual.word[0], sizeof (u32));
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
send_ct->status = retval;
|
|
|
|
if (send_ct->handler != NULL)
|
|
send_ct->handler(send_ct->handler_data);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_send_els - initiate an ELS command (FC-FS)
|
|
* @els: pointer to struct zfcp_send_els which contains all needed data for
|
|
* the command.
|
|
*/
|
|
int
|
|
zfcp_fsf_send_els(struct zfcp_send_els *els)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
u32 d_id;
|
|
struct zfcp_adapter *adapter;
|
|
unsigned long lock_flags;
|
|
int bytes;
|
|
int ret = 0;
|
|
|
|
d_id = els->d_id;
|
|
adapter = els->adapter;
|
|
|
|
ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS,
|
|
ZFCP_REQ_AUTO_CLEANUP,
|
|
NULL, &lock_flags, &fsf_req);
|
|
if (ret < 0) {
|
|
ZFCP_LOG_INFO("error: creation of ELS request failed "
|
|
"(adapter %s, port d_id: 0x%06x)\n",
|
|
zfcp_get_busid_by_adapter(adapter), d_id);
|
|
goto failed_req;
|
|
}
|
|
|
|
if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
|
|
&els->port->status))) {
|
|
ret = -EBUSY;
|
|
goto port_blocked;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
if (zfcp_use_one_sbal(els->req, els->req_count,
|
|
els->resp, els->resp_count)){
|
|
/* both request buffer and response buffer
|
|
fit into one sbale each */
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
|
|
sbale[2].addr = zfcp_sg_to_address(&els->req[0]);
|
|
sbale[2].length = els->req[0].length;
|
|
sbale[3].addr = zfcp_sg_to_address(&els->resp[0]);
|
|
sbale[3].length = els->resp[0].length;
|
|
sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
} else if (adapter->adapter_features &
|
|
FSF_FEATURE_ELS_CT_CHAINED_SBALS) {
|
|
/* try to use chained SBALs */
|
|
bytes = zfcp_qdio_sbals_from_sg(fsf_req,
|
|
SBAL_FLAGS0_TYPE_WRITE_READ,
|
|
els->req, els->req_count,
|
|
ZFCP_MAX_SBALS_PER_ELS_REQ);
|
|
if (bytes <= 0) {
|
|
ZFCP_LOG_INFO("error: creation of ELS request failed "
|
|
"(adapter %s, port d_id: 0x%06x)\n",
|
|
zfcp_get_busid_by_adapter(adapter), d_id);
|
|
if (bytes == 0) {
|
|
ret = -ENOMEM;
|
|
} else {
|
|
ret = bytes;
|
|
}
|
|
goto failed_send;
|
|
}
|
|
fsf_req->qtcb->bottom.support.req_buf_length = bytes;
|
|
fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
|
|
bytes = zfcp_qdio_sbals_from_sg(fsf_req,
|
|
SBAL_FLAGS0_TYPE_WRITE_READ,
|
|
els->resp, els->resp_count,
|
|
ZFCP_MAX_SBALS_PER_ELS_REQ);
|
|
if (bytes <= 0) {
|
|
ZFCP_LOG_INFO("error: creation of ELS request failed "
|
|
"(adapter %s, port d_id: 0x%06x)\n",
|
|
zfcp_get_busid_by_adapter(adapter), d_id);
|
|
if (bytes == 0) {
|
|
ret = -ENOMEM;
|
|
} else {
|
|
ret = bytes;
|
|
}
|
|
goto failed_send;
|
|
}
|
|
fsf_req->qtcb->bottom.support.resp_buf_length = bytes;
|
|
} else {
|
|
/* reject request */
|
|
ZFCP_LOG_INFO("error: microcode does not support chained SBALs"
|
|
", ELS request too big (adapter %s, "
|
|
"port d_id: 0x%06x)\n",
|
|
zfcp_get_busid_by_adapter(adapter), d_id);
|
|
ret = -EOPNOTSUPP;
|
|
goto failed_send;
|
|
}
|
|
|
|
/* settings in QTCB */
|
|
fsf_req->qtcb->bottom.support.d_id = d_id;
|
|
fsf_req->qtcb->bottom.support.service_class =
|
|
ZFCP_FC_SERVICE_CLASS_DEFAULT;
|
|
fsf_req->qtcb->bottom.support.timeout = ZFCP_ELS_TIMEOUT;
|
|
fsf_req->data = (unsigned long) els;
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
|
|
zfcp_san_dbf_event_els_request(fsf_req);
|
|
|
|
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
ret = zfcp_fsf_req_send(fsf_req);
|
|
if (ret) {
|
|
ZFCP_LOG_DEBUG("error: initiation of ELS request failed "
|
|
"(adapter %s, port d_id: 0x%06x)\n",
|
|
zfcp_get_busid_by_adapter(adapter), d_id);
|
|
goto failed_send;
|
|
}
|
|
|
|
ZFCP_LOG_DEBUG("ELS request initiated (adapter %s, port d_id: "
|
|
"0x%06x)\n", zfcp_get_busid_by_adapter(adapter), d_id);
|
|
goto out;
|
|
|
|
port_blocked:
|
|
failed_send:
|
|
zfcp_fsf_req_free(fsf_req);
|
|
|
|
failed_req:
|
|
out:
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_send_els_handler - handler for ELS commands
|
|
* @fsf_req: pointer to struct zfcp_fsf_req
|
|
*
|
|
* Data specific for the ELS command is passed using
|
|
* fsf_req->data. There we find the pointer to struct zfcp_send_els.
|
|
* Usually a specific handler for the ELS command is called which is
|
|
* found in this structure.
|
|
*/
|
|
static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
struct zfcp_adapter *adapter;
|
|
struct zfcp_port *port;
|
|
u32 d_id;
|
|
struct fsf_qtcb_header *header;
|
|
struct fsf_qtcb_bottom_support *bottom;
|
|
struct zfcp_send_els *send_els;
|
|
int retval = -EINVAL;
|
|
u16 subtable, rule, counter;
|
|
|
|
send_els = (struct zfcp_send_els *) fsf_req->data;
|
|
adapter = send_els->adapter;
|
|
port = send_els->port;
|
|
d_id = send_els->d_id;
|
|
header = &fsf_req->qtcb->header;
|
|
bottom = &fsf_req->qtcb->bottom.support;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
goto skip_fsfstatus;
|
|
|
|
switch (header->fsf_status) {
|
|
|
|
case FSF_GOOD:
|
|
zfcp_san_dbf_event_els_response(fsf_req);
|
|
retval = 0;
|
|
break;
|
|
|
|
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
|
|
ZFCP_LOG_INFO("error: adapter %s does not support fc "
|
|
"class %d.\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
ZFCP_FC_SERVICE_CLASS_DEFAULT);
|
|
/* stop operation for this adapter */
|
|
debug_text_exception(adapter->erp_dbf, 0, "fsf_s_class_nsup");
|
|
zfcp_erp_adapter_shutdown(adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]){
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest");
|
|
if (port && (send_els->ls_code != ZFCP_LS_ADISC))
|
|
zfcp_test_link(port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ulp");
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval =
|
|
zfcp_handle_els_rjt(header->fsf_status_qual.word[1],
|
|
(struct zfcp_ls_rjt_par *)
|
|
&header->fsf_status_qual.word[2]);
|
|
break;
|
|
case FSF_SQ_RETRY_IF_POSSIBLE:
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_sq_retry");
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
default:
|
|
ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x\n",
|
|
header->fsf_status_qual.word[0]);
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
|
|
(char*)header->fsf_status_qual.word, 16);
|
|
}
|
|
break;
|
|
|
|
case FSF_ELS_COMMAND_REJECTED:
|
|
ZFCP_LOG_INFO("ELS has been rejected because command filter "
|
|
"prohibited sending "
|
|
"(adapter: %s, port d_id: 0x%06x)\n",
|
|
zfcp_get_busid_by_adapter(adapter), d_id);
|
|
|
|
break;
|
|
|
|
case FSF_PAYLOAD_SIZE_MISMATCH:
|
|
ZFCP_LOG_INFO(
|
|
"ELS request size and ELS response size must be either "
|
|
"both 0, or both greater than 0 "
|
|
"(adapter: %s, req_buf_length=%d resp_buf_length=%d)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
bottom->req_buf_length,
|
|
bottom->resp_buf_length);
|
|
break;
|
|
|
|
case FSF_REQUEST_SIZE_TOO_LARGE:
|
|
ZFCP_LOG_INFO(
|
|
"Length of the ELS request buffer, "
|
|
"specified in QTCB bottom, "
|
|
"exceeds the size of the buffers "
|
|
"that have been allocated for ELS request data "
|
|
"(adapter: %s, req_buf_length=%d)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
bottom->req_buf_length);
|
|
break;
|
|
|
|
case FSF_RESPONSE_SIZE_TOO_LARGE:
|
|
ZFCP_LOG_INFO(
|
|
"Length of the ELS response buffer, "
|
|
"specified in QTCB bottom, "
|
|
"exceeds the size of the buffers "
|
|
"that have been allocated for ELS response data "
|
|
"(adapter: %s, resp_buf_length=%d)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
bottom->resp_buf_length);
|
|
break;
|
|
|
|
case FSF_SBAL_MISMATCH:
|
|
/* should never occure, avoided in zfcp_fsf_send_els */
|
|
ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, "
|
|
"resp_buf_length=%d)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
bottom->req_buf_length, bottom->resp_buf_length);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_ACCESS_DENIED:
|
|
ZFCP_LOG_NORMAL("access denied, cannot send ELS command "
|
|
"(adapter %s, port d_id=0x%06x)\n",
|
|
zfcp_get_busid_by_adapter(adapter), d_id);
|
|
for (counter = 0; counter < 2; counter++) {
|
|
subtable = header->fsf_status_qual.halfword[counter * 2];
|
|
rule = header->fsf_status_qual.halfword[counter * 2 + 1];
|
|
switch (subtable) {
|
|
case FSF_SQ_CFDC_SUBTABLE_OS:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
|
|
case FSF_SQ_CFDC_SUBTABLE_LUN:
|
|
ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
|
|
zfcp_act_subtable_type[subtable], rule);
|
|
break;
|
|
}
|
|
}
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_s_access");
|
|
if (port != NULL)
|
|
zfcp_erp_port_access_denied(port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL(
|
|
"bug: An unknown FSF Status was presented "
|
|
"(adapter: %s, fsf_status=0x%08x)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
header->fsf_status);
|
|
debug_text_event(adapter->erp_dbf, 0, "fsf_sq_inval");
|
|
debug_exception(adapter->erp_dbf, 0,
|
|
&header->fsf_status_qual.word[0], sizeof(u32));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
send_els->status = retval;
|
|
|
|
if (send_els->handler)
|
|
send_els->handler(send_els->handler_data);
|
|
|
|
return retval;
|
|
}
|
|
|
|
int
|
|
zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
struct zfcp_adapter *adapter = erp_action->adapter;
|
|
unsigned long lock_flags;
|
|
int retval;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(adapter,
|
|
FSF_QTCB_EXCHANGE_CONFIG_DATA,
|
|
ZFCP_REQ_AUTO_CLEANUP,
|
|
adapter->pool.fsf_req_erp,
|
|
&lock_flags, &fsf_req);
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Could not create exchange configuration "
|
|
"data request for adapter %s.\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
fsf_req->qtcb->bottom.config.feature_selection =
|
|
FSF_FEATURE_CFDC |
|
|
FSF_FEATURE_LUN_SHARING |
|
|
FSF_FEATURE_NOTIFICATION_LOST |
|
|
FSF_FEATURE_UPDATE_ALERT;
|
|
fsf_req->erp_action = erp_action;
|
|
erp_action->fsf_req = fsf_req;
|
|
|
|
zfcp_erp_start_timer(fsf_req);
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Could not send exchange configuration "
|
|
"data command on the adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
zfcp_fsf_req_free(fsf_req);
|
|
erp_action->fsf_req = NULL;
|
|
}
|
|
else
|
|
ZFCP_LOG_DEBUG("exchange configuration data request initiated "
|
|
"(adapter %s)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
|
|
return retval;
|
|
}
|
|
|
|
int
|
|
zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
|
|
struct fsf_qtcb_bottom_config *data)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
unsigned long lock_flags;
|
|
int retval;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA,
|
|
0, NULL, &lock_flags, &fsf_req);
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Could not create exchange configuration "
|
|
"data request for adapter %s.\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
fsf_req->qtcb->bottom.config.feature_selection =
|
|
FSF_FEATURE_CFDC |
|
|
FSF_FEATURE_LUN_SHARING |
|
|
FSF_FEATURE_NOTIFICATION_LOST |
|
|
FSF_FEATURE_UPDATE_ALERT;
|
|
|
|
if (data)
|
|
fsf_req->data = (unsigned long) data;
|
|
|
|
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
if (retval)
|
|
ZFCP_LOG_INFO("error: Could not send exchange configuration "
|
|
"data command on the adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
else
|
|
wait_event(fsf_req->completion_wq,
|
|
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
|
|
|
|
zfcp_fsf_req_free(fsf_req);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_exchange_config_evaluate
|
|
* @fsf_req: fsf_req which belongs to xchg config data request
|
|
* @xchg_ok: specifies if xchg config data was incomplete or complete (0/1)
|
|
*
|
|
* returns: -EIO on error, 0 otherwise
|
|
*/
|
|
static int
|
|
zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok)
|
|
{
|
|
struct fsf_qtcb_bottom_config *bottom;
|
|
struct zfcp_adapter *adapter = fsf_req->adapter;
|
|
struct Scsi_Host *shost = adapter->scsi_host;
|
|
|
|
bottom = &fsf_req->qtcb->bottom.config;
|
|
ZFCP_LOG_DEBUG("low/high QTCB version 0x%x/0x%x of FSF\n",
|
|
bottom->low_qtcb_version, bottom->high_qtcb_version);
|
|
adapter->fsf_lic_version = bottom->lic_version;
|
|
adapter->adapter_features = bottom->adapter_features;
|
|
adapter->connection_features = bottom->connection_features;
|
|
adapter->peer_wwpn = 0;
|
|
adapter->peer_wwnn = 0;
|
|
adapter->peer_d_id = 0;
|
|
|
|
if (xchg_ok) {
|
|
|
|
if (fsf_req->data)
|
|
memcpy((struct fsf_qtcb_bottom_config *) fsf_req->data,
|
|
bottom, sizeof (struct fsf_qtcb_bottom_config));
|
|
|
|
fc_host_node_name(shost) = bottom->nport_serv_param.wwnn;
|
|
fc_host_port_name(shost) = bottom->nport_serv_param.wwpn;
|
|
fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK;
|
|
fc_host_speed(shost) = bottom->fc_link_speed;
|
|
fc_host_supported_classes(shost) =
|
|
FC_COS_CLASS2 | FC_COS_CLASS3;
|
|
adapter->hydra_version = bottom->adapter_type;
|
|
if (fc_host_permanent_port_name(shost) == -1)
|
|
fc_host_permanent_port_name(shost) =
|
|
fc_host_port_name(shost);
|
|
if (bottom->fc_topology == FSF_TOPO_P2P) {
|
|
adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK;
|
|
adapter->peer_wwpn = bottom->plogi_payload.wwpn;
|
|
adapter->peer_wwnn = bottom->plogi_payload.wwnn;
|
|
fc_host_port_type(shost) = FC_PORTTYPE_PTP;
|
|
} else if (bottom->fc_topology == FSF_TOPO_FABRIC)
|
|
fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
|
|
else if (bottom->fc_topology == FSF_TOPO_AL)
|
|
fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
|
|
else
|
|
fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
|
|
} else {
|
|
fc_host_node_name(shost) = 0;
|
|
fc_host_port_name(shost) = 0;
|
|
fc_host_port_id(shost) = 0;
|
|
fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
|
|
fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
|
|
adapter->hydra_version = 0;
|
|
}
|
|
|
|
if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
|
|
adapter->hardware_version = bottom->hardware_version;
|
|
memcpy(fc_host_serial_number(shost), bottom->serial_number,
|
|
min(FC_SERIAL_NUMBER_SIZE, 17));
|
|
EBCASC(fc_host_serial_number(shost),
|
|
min(FC_SERIAL_NUMBER_SIZE, 17));
|
|
}
|
|
|
|
ZFCP_LOG_NORMAL("The adapter %s reported the following "
|
|
"characteristics:\n"
|
|
"WWNN 0x%016Lx, "
|
|
"WWPN 0x%016Lx, "
|
|
"S_ID 0x%06x,\n"
|
|
"adapter version 0x%x, "
|
|
"LIC version 0x%x, "
|
|
"FC link speed %d Gb/s\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
(wwn_t) fc_host_node_name(shost),
|
|
(wwn_t) fc_host_port_name(shost),
|
|
fc_host_port_id(shost),
|
|
adapter->hydra_version,
|
|
adapter->fsf_lic_version,
|
|
fc_host_speed(shost));
|
|
if (ZFCP_QTCB_VERSION < bottom->low_qtcb_version) {
|
|
ZFCP_LOG_NORMAL("error: the adapter %s "
|
|
"only supports newer control block "
|
|
"versions in comparison to this device "
|
|
"driver (try updated device driver)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
debug_text_event(adapter->erp_dbf, 0, "low_qtcb_ver");
|
|
zfcp_erp_adapter_shutdown(adapter, 0);
|
|
return -EIO;
|
|
}
|
|
if (ZFCP_QTCB_VERSION > bottom->high_qtcb_version) {
|
|
ZFCP_LOG_NORMAL("error: the adapter %s "
|
|
"only supports older control block "
|
|
"versions than this device driver uses"
|
|
"(consider a microcode upgrade)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
debug_text_event(adapter->erp_dbf, 0, "high_qtcb_ver");
|
|
zfcp_erp_adapter_shutdown(adapter, 0);
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* function: zfcp_fsf_exchange_config_data_handler
|
|
*
|
|
* purpose: is called for finished Exchange Configuration Data command
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
struct fsf_qtcb_bottom_config *bottom;
|
|
struct zfcp_adapter *adapter = fsf_req->adapter;
|
|
struct fsf_qtcb *qtcb = fsf_req->qtcb;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
return -EIO;
|
|
|
|
switch (qtcb->header.fsf_status) {
|
|
|
|
case FSF_GOOD:
|
|
if (zfcp_fsf_exchange_config_evaluate(fsf_req, 1))
|
|
return -EIO;
|
|
|
|
switch (fc_host_port_type(adapter->scsi_host)) {
|
|
case FC_PORTTYPE_PTP:
|
|
ZFCP_LOG_NORMAL("Point-to-Point fibrechannel "
|
|
"configuration detected at adapter %s\n"
|
|
"Peer WWNN 0x%016llx, "
|
|
"peer WWPN 0x%016llx, "
|
|
"peer d_id 0x%06x\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
adapter->peer_wwnn,
|
|
adapter->peer_wwpn,
|
|
adapter->peer_d_id);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0,
|
|
"top-p-to-p");
|
|
break;
|
|
case FC_PORTTYPE_NLPORT:
|
|
ZFCP_LOG_NORMAL("error: Arbitrated loop fibrechannel "
|
|
"topology detected at adapter %s "
|
|
"unsupported, shutting down adapter\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0,
|
|
"top-al");
|
|
zfcp_erp_adapter_shutdown(adapter, 0);
|
|
return -EIO;
|
|
case FC_PORTTYPE_NPORT:
|
|
ZFCP_LOG_NORMAL("Switched fabric fibrechannel "
|
|
"network detected at adapter %s.\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: The fibrechannel topology "
|
|
"reported by the exchange "
|
|
"configuration command for "
|
|
"the adapter %s is not "
|
|
"of a type known to the zfcp "
|
|
"driver, shutting down adapter\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
debug_text_exception(fsf_req->adapter->erp_dbf, 0,
|
|
"unknown-topo");
|
|
zfcp_erp_adapter_shutdown(adapter, 0);
|
|
return -EIO;
|
|
}
|
|
bottom = &qtcb->bottom.config;
|
|
if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
|
|
ZFCP_LOG_NORMAL("bug: Maximum QTCB size (%d bytes) "
|
|
"allowed by the adapter %s "
|
|
"is lower than the minimum "
|
|
"required by the driver (%ld bytes).\n",
|
|
bottom->max_qtcb_size,
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
sizeof(struct fsf_qtcb));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0,
|
|
"qtcb-size");
|
|
debug_event(fsf_req->adapter->erp_dbf, 0,
|
|
&bottom->max_qtcb_size, sizeof (u32));
|
|
zfcp_erp_adapter_shutdown(adapter, 0);
|
|
return -EIO;
|
|
}
|
|
atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
|
|
&adapter->status);
|
|
break;
|
|
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
|
|
debug_text_event(adapter->erp_dbf, 0, "xchg-inco");
|
|
|
|
if (zfcp_fsf_exchange_config_evaluate(fsf_req, 0))
|
|
return -EIO;
|
|
|
|
atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
|
|
&adapter->status);
|
|
|
|
zfcp_fsf_link_down_info_eval(adapter,
|
|
&qtcb->header.fsf_status_qual.link_down_info);
|
|
break;
|
|
default:
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf-stat-ng");
|
|
debug_event(fsf_req->adapter->erp_dbf, 0,
|
|
&fsf_req->qtcb->header.fsf_status, sizeof(u32));
|
|
zfcp_erp_adapter_shutdown(adapter, 0);
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_exchange_port_data - request information about local port
|
|
* @erp_action: ERP action for the adapter for which port data is requested
|
|
*/
|
|
int
|
|
zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
struct zfcp_adapter *adapter = erp_action->adapter;
|
|
unsigned long lock_flags;
|
|
int retval;
|
|
|
|
if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) {
|
|
ZFCP_LOG_INFO("error: exchange port data "
|
|
"command not supported by adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
|
|
ZFCP_REQ_AUTO_CLEANUP,
|
|
adapter->pool.fsf_req_erp,
|
|
&lock_flags, &fsf_req);
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Out of resources. Could not create an "
|
|
"exchange port data request for "
|
|
"the adapter %s.\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
erp_action->fsf_req = fsf_req;
|
|
fsf_req->erp_action = erp_action;
|
|
zfcp_erp_start_timer(fsf_req);
|
|
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
|
|
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Could not send an exchange port data "
|
|
"command on the adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
zfcp_fsf_req_free(fsf_req);
|
|
erp_action->fsf_req = NULL;
|
|
}
|
|
else
|
|
ZFCP_LOG_DEBUG("exchange port data request initiated "
|
|
"(adapter %s)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
return retval;
|
|
}
|
|
|
|
|
|
/**
|
|
* zfcp_fsf_exchange_port_data_sync - request information about local port
|
|
* and wait until information is ready
|
|
*/
|
|
int
|
|
zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
|
|
struct fsf_qtcb_bottom_port *data)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
unsigned long lock_flags;
|
|
int retval;
|
|
|
|
if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) {
|
|
ZFCP_LOG_INFO("error: exchange port data "
|
|
"command not supported by adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
|
|
0, NULL, &lock_flags, &fsf_req);
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Out of resources. Could not create an "
|
|
"exchange port data request for "
|
|
"the adapter %s.\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
if (data)
|
|
fsf_req->data = (unsigned long) data;
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
|
|
|
|
if (retval)
|
|
ZFCP_LOG_INFO("error: Could not send an exchange port data "
|
|
"command on the adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
else
|
|
wait_event(fsf_req->completion_wq,
|
|
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
|
|
|
|
zfcp_fsf_req_free(fsf_req);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_exchange_port_evaluate
|
|
* @fsf_req: fsf_req which belongs to xchg port data request
|
|
* @xchg_ok: specifies if xchg port data was incomplete or complete (0/1)
|
|
*/
|
|
static void
|
|
zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok)
|
|
{
|
|
struct zfcp_adapter *adapter;
|
|
struct fsf_qtcb_bottom_port *bottom;
|
|
struct Scsi_Host *shost;
|
|
|
|
adapter = fsf_req->adapter;
|
|
bottom = &fsf_req->qtcb->bottom.port;
|
|
shost = adapter->scsi_host;
|
|
|
|
if (fsf_req->data)
|
|
memcpy((struct fsf_qtcb_bottom_port*) fsf_req->data, bottom,
|
|
sizeof(struct fsf_qtcb_bottom_port));
|
|
|
|
if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
|
|
fc_host_permanent_port_name(shost) = bottom->wwpn;
|
|
else
|
|
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
|
|
fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
|
|
fc_host_supported_speeds(shost) = bottom->supported_speed;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request
|
|
* @fsf_req: pointer to struct zfcp_fsf_req
|
|
*/
|
|
static void
|
|
zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
struct zfcp_adapter *adapter;
|
|
struct fsf_qtcb *qtcb;
|
|
|
|
adapter = fsf_req->adapter;
|
|
qtcb = fsf_req->qtcb;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
return;
|
|
|
|
switch (qtcb->header.fsf_status) {
|
|
case FSF_GOOD:
|
|
zfcp_fsf_exchange_port_evaluate(fsf_req, 1);
|
|
atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
|
|
break;
|
|
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
|
|
zfcp_fsf_exchange_port_evaluate(fsf_req, 0);
|
|
atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
|
|
zfcp_fsf_link_down_info_eval(adapter,
|
|
&qtcb->header.fsf_status_qual.link_down_info);
|
|
break;
|
|
default:
|
|
debug_text_event(adapter->erp_dbf, 0, "xchg-port-ng");
|
|
debug_event(adapter->erp_dbf, 0,
|
|
&fsf_req->qtcb->header.fsf_status, sizeof(u32));
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* function: zfcp_fsf_open_port
|
|
*
|
|
* purpose:
|
|
*
|
|
* returns: address of initiated FSF request
|
|
* NULL - request could not be initiated
|
|
*/
|
|
int
|
|
zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
unsigned long lock_flags;
|
|
int retval = 0;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(erp_action->adapter,
|
|
FSF_QTCB_OPEN_PORT_WITH_DID,
|
|
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
|
|
erp_action->adapter->pool.fsf_req_erp,
|
|
&lock_flags, &fsf_req);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("error: Could not create open port request "
|
|
"for port 0x%016Lx on adapter %s.\n",
|
|
erp_action->port->wwpn,
|
|
zfcp_get_busid_by_adapter(erp_action->adapter));
|
|
goto out;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id;
|
|
atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status);
|
|
fsf_req->data = (unsigned long) erp_action->port;
|
|
fsf_req->erp_action = erp_action;
|
|
erp_action->fsf_req = fsf_req;
|
|
|
|
zfcp_erp_start_timer(fsf_req);
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Could not send open port request for "
|
|
"port 0x%016Lx on adapter %s.\n",
|
|
erp_action->port->wwpn,
|
|
zfcp_get_busid_by_adapter(erp_action->adapter));
|
|
zfcp_fsf_req_free(fsf_req);
|
|
erp_action->fsf_req = NULL;
|
|
goto out;
|
|
}
|
|
|
|
ZFCP_LOG_DEBUG("open port request initiated "
|
|
"(adapter %s, port 0x%016Lx)\n",
|
|
zfcp_get_busid_by_adapter(erp_action->adapter),
|
|
erp_action->port->wwpn);
|
|
out:
|
|
write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_open_port_handler
|
|
*
|
|
* purpose: is called for finished Open Port command
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
int retval = -EINVAL;
|
|
struct zfcp_port *port;
|
|
struct fsf_plogi *plogi;
|
|
struct fsf_qtcb_header *header;
|
|
u16 subtable, rule, counter;
|
|
|
|
port = (struct zfcp_port *) fsf_req->data;
|
|
header = &fsf_req->qtcb->header;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
|
|
/* don't change port status in our bookkeeping */
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
/* evaluate FSF status in QTCB */
|
|
switch (header->fsf_status) {
|
|
|
|
case FSF_PORT_ALREADY_OPEN:
|
|
ZFCP_LOG_NORMAL("bug: remote port 0x%016Lx on adapter %s "
|
|
"is already open.\n",
|
|
port->wwpn, zfcp_get_busid_by_port(port));
|
|
debug_text_exception(fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_s_popen");
|
|
/*
|
|
* This is a bug, however operation should continue normally
|
|
* if it is simply ignored
|
|
*/
|
|
break;
|
|
|
|
case FSF_ACCESS_DENIED:
|
|
ZFCP_LOG_NORMAL("Access denied, cannot open port 0x%016Lx "
|
|
"on adapter %s\n",
|
|
port->wwpn, zfcp_get_busid_by_port(port));
|
|
for (counter = 0; counter < 2; counter++) {
|
|
subtable = header->fsf_status_qual.halfword[counter * 2];
|
|
rule = header->fsf_status_qual.halfword[counter * 2 + 1];
|
|
switch (subtable) {
|
|
case FSF_SQ_CFDC_SUBTABLE_OS:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
|
|
case FSF_SQ_CFDC_SUBTABLE_LUN:
|
|
ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
|
|
zfcp_act_subtable_type[subtable], rule);
|
|
break;
|
|
}
|
|
}
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access");
|
|
zfcp_erp_port_access_denied(port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
|
|
ZFCP_LOG_INFO("error: The FSF adapter is out of resources. "
|
|
"The remote port 0x%016Lx on adapter %s "
|
|
"could not be opened. Disabling it.\n",
|
|
port->wwpn, zfcp_get_busid_by_port(port));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_max_ports");
|
|
zfcp_erp_port_failed(port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_sq_ltest");
|
|
/* ERP strategy will escalate */
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
/* ERP strategy will escalate */
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_sq_ulp");
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_NO_RETRY_POSSIBLE:
|
|
ZFCP_LOG_NORMAL("The remote port 0x%016Lx on "
|
|
"adapter %s could not be opened. "
|
|
"Disabling it.\n",
|
|
port->wwpn,
|
|
zfcp_get_busid_by_port(port));
|
|
debug_text_exception(fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_sq_no_retry");
|
|
zfcp_erp_port_failed(port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL
|
|
("bug: Wrong status qualifier 0x%x arrived.\n",
|
|
header->fsf_status_qual.word[0]);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_sq_inval:");
|
|
debug_exception(
|
|
fsf_req->adapter->erp_dbf, 0,
|
|
&header->fsf_status_qual.word[0],
|
|
sizeof (u32));
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case FSF_GOOD:
|
|
/* save port handle assigned by FSF */
|
|
port->handle = header->port_handle;
|
|
ZFCP_LOG_INFO("The remote port 0x%016Lx via adapter %s "
|
|
"was opened, it's port handle is 0x%x\n",
|
|
port->wwpn, zfcp_get_busid_by_port(port),
|
|
port->handle);
|
|
/* mark port as open */
|
|
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
|
|
ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
|
|
ZFCP_STATUS_COMMON_ACCESS_BOXED,
|
|
&port->status);
|
|
retval = 0;
|
|
/* check whether D_ID has changed during open */
|
|
/*
|
|
* FIXME: This check is not airtight, as the FCP channel does
|
|
* not monitor closures of target port connections caused on
|
|
* the remote side. Thus, they might miss out on invalidating
|
|
* locally cached WWPNs (and other N_Port parameters) of gone
|
|
* target ports. So, our heroic attempt to make things safe
|
|
* could be undermined by 'open port' response data tagged with
|
|
* obsolete WWPNs. Another reason to monitor potential
|
|
* connection closures ourself at least (by interpreting
|
|
* incoming ELS' and unsolicited status). It just crosses my
|
|
* mind that one should be able to cross-check by means of
|
|
* another GID_PN straight after a port has been opened.
|
|
* Alternately, an ADISC/PDISC ELS should suffice, as well.
|
|
*/
|
|
plogi = (struct fsf_plogi *) fsf_req->qtcb->bottom.support.els;
|
|
if (!atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN, &port->status))
|
|
{
|
|
if (fsf_req->qtcb->bottom.support.els1_length <
|
|
sizeof (struct fsf_plogi)) {
|
|
ZFCP_LOG_INFO(
|
|
"warning: insufficient length of "
|
|
"PLOGI payload (%i)\n",
|
|
fsf_req->qtcb->bottom.support.els1_length);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_s_short_plogi:");
|
|
/* skip sanity check and assume wwpn is ok */
|
|
} else {
|
|
if (plogi->serv_param.wwpn != port->wwpn) {
|
|
ZFCP_LOG_INFO("warning: d_id of port "
|
|
"0x%016Lx changed during "
|
|
"open\n", port->wwpn);
|
|
debug_text_event(
|
|
fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_s_did_change:");
|
|
atomic_clear_mask(
|
|
ZFCP_STATUS_PORT_DID_DID,
|
|
&port->status);
|
|
} else {
|
|
port->wwnn = plogi->serv_param.wwnn;
|
|
zfcp_plogi_evaluate(port, plogi);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case FSF_UNKNOWN_OP_SUBTYPE:
|
|
/* should never occure, subtype not set in zfcp_fsf_open_port */
|
|
ZFCP_LOG_INFO("unknown operation subtype (adapter: %s, "
|
|
"op_subtype=0x%x)\n",
|
|
zfcp_get_busid_by_port(port),
|
|
fsf_req->qtcb->bottom.support.operation_subtype);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
|
|
"(debug info 0x%x)\n",
|
|
header->fsf_status);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:");
|
|
debug_exception(fsf_req->adapter->erp_dbf, 0,
|
|
&header->fsf_status, sizeof (u32));
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_close_port
|
|
*
|
|
* purpose: submit FSF command "close port"
|
|
*
|
|
* returns: address of initiated FSF request
|
|
* NULL - request could not be initiated
|
|
*/
|
|
int
|
|
zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
unsigned long lock_flags;
|
|
int retval = 0;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(erp_action->adapter,
|
|
FSF_QTCB_CLOSE_PORT,
|
|
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
|
|
erp_action->adapter->pool.fsf_req_erp,
|
|
&lock_flags, &fsf_req);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("error: Could not create a close port request "
|
|
"for port 0x%016Lx on adapter %s.\n",
|
|
erp_action->port->wwpn,
|
|
zfcp_get_busid_by_adapter(erp_action->adapter));
|
|
goto out;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status);
|
|
fsf_req->data = (unsigned long) erp_action->port;
|
|
fsf_req->erp_action = erp_action;
|
|
fsf_req->qtcb->header.port_handle = erp_action->port->handle;
|
|
fsf_req->erp_action = erp_action;
|
|
erp_action->fsf_req = fsf_req;
|
|
|
|
zfcp_erp_start_timer(fsf_req);
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Could not send a close port request for "
|
|
"port 0x%016Lx on adapter %s.\n",
|
|
erp_action->port->wwpn,
|
|
zfcp_get_busid_by_adapter(erp_action->adapter));
|
|
zfcp_fsf_req_free(fsf_req);
|
|
erp_action->fsf_req = NULL;
|
|
goto out;
|
|
}
|
|
|
|
ZFCP_LOG_TRACE("close port request initiated "
|
|
"(adapter %s, port 0x%016Lx)\n",
|
|
zfcp_get_busid_by_adapter(erp_action->adapter),
|
|
erp_action->port->wwpn);
|
|
out:
|
|
write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_close_port_handler
|
|
*
|
|
* purpose: is called for finished Close Port FSF command
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_close_port_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
int retval = -EINVAL;
|
|
struct zfcp_port *port;
|
|
|
|
port = (struct zfcp_port *) fsf_req->data;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
|
|
/* don't change port status in our bookkeeping */
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
/* evaluate FSF status in QTCB */
|
|
switch (fsf_req->qtcb->header.fsf_status) {
|
|
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
|
|
"0x%016Lx on adapter %s invalid. This may happen "
|
|
"occasionally.\n", port->handle,
|
|
port->wwpn, zfcp_get_busid_by_port(port));
|
|
ZFCP_LOG_DEBUG("status qualifier:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &fsf_req->qtcb->header.fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_phand_nv");
|
|
zfcp_erp_adapter_reopen(port->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
/* Note: FSF has actually closed the port in this case.
|
|
* The status code is just daft. Fingers crossed for a change
|
|
*/
|
|
retval = 0;
|
|
break;
|
|
|
|
case FSF_GOOD:
|
|
ZFCP_LOG_TRACE("remote port 0x016%Lx on adapter %s closed, "
|
|
"port handle 0x%x\n", port->wwpn,
|
|
zfcp_get_busid_by_port(port), port->handle);
|
|
zfcp_erp_modify_port_status(port,
|
|
ZFCP_STATUS_COMMON_OPEN,
|
|
ZFCP_CLEAR);
|
|
retval = 0;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
|
|
"(debug info 0x%x)\n",
|
|
fsf_req->qtcb->header.fsf_status);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:");
|
|
debug_exception(fsf_req->adapter->erp_dbf, 0,
|
|
&fsf_req->qtcb->header.fsf_status,
|
|
sizeof (u32));
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_close_physical_port
|
|
*
|
|
* purpose: submit FSF command "close physical port"
|
|
*
|
|
* returns: address of initiated FSF request
|
|
* NULL - request could not be initiated
|
|
*/
|
|
int
|
|
zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
unsigned long lock_flags;
|
|
int retval = 0;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(erp_action->adapter,
|
|
FSF_QTCB_CLOSE_PHYSICAL_PORT,
|
|
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
|
|
erp_action->adapter->pool.fsf_req_erp,
|
|
&lock_flags, &fsf_req);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("error: Could not create close physical port "
|
|
"request (adapter %s, port 0x%016Lx)\n",
|
|
zfcp_get_busid_by_adapter(erp_action->adapter),
|
|
erp_action->port->wwpn);
|
|
|
|
goto out;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
/* mark port as being closed */
|
|
atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING,
|
|
&erp_action->port->status);
|
|
/* save a pointer to this port */
|
|
fsf_req->data = (unsigned long) erp_action->port;
|
|
fsf_req->qtcb->header.port_handle = erp_action->port->handle;
|
|
fsf_req->erp_action = erp_action;
|
|
erp_action->fsf_req = fsf_req;
|
|
|
|
zfcp_erp_start_timer(fsf_req);
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Could not send close physical port "
|
|
"request (adapter %s, port 0x%016Lx)\n",
|
|
zfcp_get_busid_by_adapter(erp_action->adapter),
|
|
erp_action->port->wwpn);
|
|
zfcp_fsf_req_free(fsf_req);
|
|
erp_action->fsf_req = NULL;
|
|
goto out;
|
|
}
|
|
|
|
ZFCP_LOG_TRACE("close physical port request initiated "
|
|
"(adapter %s, port 0x%016Lx)\n",
|
|
zfcp_get_busid_by_adapter(erp_action->adapter),
|
|
erp_action->port->wwpn);
|
|
out:
|
|
write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_close_physical_port_handler
|
|
*
|
|
* purpose: is called for finished Close Physical Port FSF command
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
int retval = -EINVAL;
|
|
struct zfcp_port *port;
|
|
struct zfcp_unit *unit;
|
|
struct fsf_qtcb_header *header;
|
|
u16 subtable, rule, counter;
|
|
|
|
port = (struct zfcp_port *) fsf_req->data;
|
|
header = &fsf_req->qtcb->header;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
|
|
/* don't change port status in our bookkeeping */
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
/* evaluate FSF status in QTCB */
|
|
switch (header->fsf_status) {
|
|
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
ZFCP_LOG_INFO("Temporary port identifier 0x%x invalid"
|
|
"(adapter %s, port 0x%016Lx). "
|
|
"This may happen occasionally.\n",
|
|
port->handle,
|
|
zfcp_get_busid_by_port(port),
|
|
port->wwpn);
|
|
ZFCP_LOG_DEBUG("status qualifier:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &header->fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_phand_nv");
|
|
zfcp_erp_adapter_reopen(port->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_ACCESS_DENIED:
|
|
ZFCP_LOG_NORMAL("Access denied, cannot close "
|
|
"physical port 0x%016Lx on adapter %s\n",
|
|
port->wwpn, zfcp_get_busid_by_port(port));
|
|
for (counter = 0; counter < 2; counter++) {
|
|
subtable = header->fsf_status_qual.halfword[counter * 2];
|
|
rule = header->fsf_status_qual.halfword[counter * 2 + 1];
|
|
switch (subtable) {
|
|
case FSF_SQ_CFDC_SUBTABLE_OS:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
|
|
case FSF_SQ_CFDC_SUBTABLE_LUN:
|
|
ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
|
|
zfcp_act_subtable_type[subtable], rule);
|
|
break;
|
|
}
|
|
}
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access");
|
|
zfcp_erp_port_access_denied(port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_PORT_BOXED:
|
|
ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter "
|
|
"%s needs to be reopened but it was attempted "
|
|
"to close it physically.\n",
|
|
port->wwpn,
|
|
zfcp_get_busid_by_port(port));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_pboxed");
|
|
zfcp_erp_port_boxed(port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
|
|
ZFCP_STATUS_FSFREQ_RETRY;
|
|
break;
|
|
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_sq_ltest");
|
|
/* This will now be escalated by ERP */
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
/* ERP strategy will escalate */
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_sq_ulp");
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL
|
|
("bug: Wrong status qualifier 0x%x arrived.\n",
|
|
header->fsf_status_qual.word[0]);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_sq_inval:");
|
|
debug_exception(
|
|
fsf_req->adapter->erp_dbf, 0,
|
|
&header->fsf_status_qual.word[0], sizeof (u32));
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case FSF_GOOD:
|
|
ZFCP_LOG_DEBUG("Remote port 0x%016Lx via adapter %s "
|
|
"physically closed, port handle 0x%x\n",
|
|
port->wwpn,
|
|
zfcp_get_busid_by_port(port), port->handle);
|
|
/* can't use generic zfcp_erp_modify_port_status because
|
|
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port
|
|
*/
|
|
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
|
|
list_for_each_entry(unit, &port->unit_list_head, list)
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
|
|
retval = 0;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
|
|
"(debug info 0x%x)\n",
|
|
header->fsf_status);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:");
|
|
debug_exception(fsf_req->adapter->erp_dbf, 0,
|
|
&header->fsf_status, sizeof (u32));
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_open_unit
|
|
*
|
|
* purpose:
|
|
*
|
|
* returns:
|
|
*
|
|
* assumptions: This routine does not check whether the associated
|
|
* remote port has already been opened. This should be
|
|
* done by calling routines. Otherwise some status
|
|
* may be presented by FSF
|
|
*/
|
|
int
|
|
zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
unsigned long lock_flags;
|
|
int retval = 0;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(erp_action->adapter,
|
|
FSF_QTCB_OPEN_LUN,
|
|
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
|
|
erp_action->adapter->pool.fsf_req_erp,
|
|
&lock_flags, &fsf_req);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("error: Could not create open unit request for "
|
|
"unit 0x%016Lx on port 0x%016Lx on adapter %s.\n",
|
|
erp_action->unit->fcp_lun,
|
|
erp_action->unit->port->wwpn,
|
|
zfcp_get_busid_by_adapter(erp_action->adapter));
|
|
goto out;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
fsf_req->qtcb->header.port_handle = erp_action->port->handle;
|
|
fsf_req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
|
|
if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE))
|
|
fsf_req->qtcb->bottom.support.option =
|
|
FSF_OPEN_LUN_SUPPRESS_BOXING;
|
|
atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status);
|
|
fsf_req->data = (unsigned long) erp_action->unit;
|
|
fsf_req->erp_action = erp_action;
|
|
erp_action->fsf_req = fsf_req;
|
|
|
|
zfcp_erp_start_timer(fsf_req);
|
|
retval = zfcp_fsf_req_send(erp_action->fsf_req);
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Could not send an open unit request "
|
|
"on the adapter %s, port 0x%016Lx for "
|
|
"unit 0x%016Lx\n",
|
|
zfcp_get_busid_by_adapter(erp_action->adapter),
|
|
erp_action->port->wwpn,
|
|
erp_action->unit->fcp_lun);
|
|
zfcp_fsf_req_free(fsf_req);
|
|
erp_action->fsf_req = NULL;
|
|
goto out;
|
|
}
|
|
|
|
ZFCP_LOG_TRACE("Open LUN request initiated (adapter %s, "
|
|
"port 0x%016Lx, unit 0x%016Lx)\n",
|
|
zfcp_get_busid_by_adapter(erp_action->adapter),
|
|
erp_action->port->wwpn, erp_action->unit->fcp_lun);
|
|
out:
|
|
write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_open_unit_handler
|
|
*
|
|
* purpose: is called for finished Open LUN command
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
int retval = -EINVAL;
|
|
struct zfcp_adapter *adapter;
|
|
struct zfcp_unit *unit;
|
|
struct fsf_qtcb_header *header;
|
|
struct fsf_qtcb_bottom_support *bottom;
|
|
struct fsf_queue_designator *queue_designator;
|
|
u16 subtable, rule, counter;
|
|
int exclusive, readwrite;
|
|
|
|
unit = (struct zfcp_unit *) fsf_req->data;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
|
|
/* don't change unit status in our bookkeeping */
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
adapter = fsf_req->adapter;
|
|
header = &fsf_req->qtcb->header;
|
|
bottom = &fsf_req->qtcb->bottom.support;
|
|
queue_designator = &header->fsf_status_qual.fsf_queue_designator;
|
|
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
|
|
ZFCP_STATUS_COMMON_ACCESS_BOXED |
|
|
ZFCP_STATUS_UNIT_SHARED |
|
|
ZFCP_STATUS_UNIT_READONLY,
|
|
&unit->status);
|
|
|
|
/* evaluate FSF status in QTCB */
|
|
switch (header->fsf_status) {
|
|
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
ZFCP_LOG_INFO("Temporary port identifier 0x%x "
|
|
"for port 0x%016Lx on adapter %s invalid "
|
|
"This may happen occasionally\n",
|
|
unit->port->handle,
|
|
unit->port->wwpn, zfcp_get_busid_by_unit(unit));
|
|
ZFCP_LOG_DEBUG("status qualifier:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &header->fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_s_ph_nv");
|
|
zfcp_erp_adapter_reopen(unit->port->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_LUN_ALREADY_OPEN:
|
|
ZFCP_LOG_NORMAL("bug: Attempted to open unit 0x%016Lx on "
|
|
"remote port 0x%016Lx on adapter %s twice.\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn, zfcp_get_busid_by_unit(unit));
|
|
debug_text_exception(adapter->erp_dbf, 0,
|
|
"fsf_s_uopen");
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_ACCESS_DENIED:
|
|
ZFCP_LOG_NORMAL("Access denied, cannot open unit 0x%016Lx on "
|
|
"remote port 0x%016Lx on adapter %s\n",
|
|
unit->fcp_lun, unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
for (counter = 0; counter < 2; counter++) {
|
|
subtable = header->fsf_status_qual.halfword[counter * 2];
|
|
rule = header->fsf_status_qual.halfword[counter * 2 + 1];
|
|
switch (subtable) {
|
|
case FSF_SQ_CFDC_SUBTABLE_OS:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
|
|
case FSF_SQ_CFDC_SUBTABLE_LUN:
|
|
ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
|
|
zfcp_act_subtable_type[subtable], rule);
|
|
break;
|
|
}
|
|
}
|
|
debug_text_event(adapter->erp_dbf, 1, "fsf_s_access");
|
|
zfcp_erp_unit_access_denied(unit);
|
|
atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
|
|
atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_PORT_BOXED:
|
|
ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
|
|
"needs to be reopened\n",
|
|
unit->port->wwpn, zfcp_get_busid_by_unit(unit));
|
|
debug_text_event(adapter->erp_dbf, 2, "fsf_s_pboxed");
|
|
zfcp_erp_port_boxed(unit->port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
|
|
ZFCP_STATUS_FSFREQ_RETRY;
|
|
break;
|
|
|
|
case FSF_LUN_SHARING_VIOLATION:
|
|
if (header->fsf_status_qual.word[0] != 0) {
|
|
ZFCP_LOG_NORMAL("FCP-LUN 0x%Lx at the remote port "
|
|
"with WWPN 0x%Lx "
|
|
"connected to the adapter %s "
|
|
"is already in use in LPAR%d, CSS%d\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
queue_designator->hla,
|
|
queue_designator->cssid);
|
|
} else {
|
|
subtable = header->fsf_status_qual.halfword[4];
|
|
rule = header->fsf_status_qual.halfword[5];
|
|
switch (subtable) {
|
|
case FSF_SQ_CFDC_SUBTABLE_OS:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
|
|
case FSF_SQ_CFDC_SUBTABLE_LUN:
|
|
ZFCP_LOG_NORMAL("Access to FCP-LUN 0x%Lx at the "
|
|
"remote port with WWPN 0x%Lx "
|
|
"connected to the adapter %s "
|
|
"is denied (%s rule %d)\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
zfcp_act_subtable_type[subtable],
|
|
rule);
|
|
break;
|
|
}
|
|
}
|
|
ZFCP_LOG_DEBUG("status qualifier:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &header->fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(adapter->erp_dbf, 2,
|
|
"fsf_s_l_sh_vio");
|
|
zfcp_erp_unit_access_denied(unit);
|
|
atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
|
|
atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
|
|
ZFCP_LOG_INFO("error: The adapter ran out of resources. "
|
|
"There is no handle (temporary port identifier) "
|
|
"available for unit 0x%016Lx on port 0x%016Lx "
|
|
"on adapter %s\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
debug_text_event(adapter->erp_dbf, 1,
|
|
"fsf_s_max_units");
|
|
zfcp_erp_unit_failed(unit);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
/* Re-establish link to port */
|
|
debug_text_event(adapter->erp_dbf, 1,
|
|
"fsf_sq_ltest");
|
|
zfcp_test_link(unit->port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
/* ERP strategy will escalate */
|
|
debug_text_event(adapter->erp_dbf, 1,
|
|
"fsf_sq_ulp");
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL
|
|
("bug: Wrong status qualifier 0x%x arrived.\n",
|
|
header->fsf_status_qual.word[0]);
|
|
debug_text_event(adapter->erp_dbf, 0,
|
|
"fsf_sq_inval:");
|
|
debug_exception(adapter->erp_dbf, 0,
|
|
&header->fsf_status_qual.word[0],
|
|
sizeof (u32));
|
|
}
|
|
break;
|
|
|
|
case FSF_INVALID_COMMAND_OPTION:
|
|
ZFCP_LOG_NORMAL(
|
|
"Invalid option 0x%x has been specified "
|
|
"in QTCB bottom sent to the adapter %s\n",
|
|
bottom->option,
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EINVAL;
|
|
break;
|
|
|
|
case FSF_GOOD:
|
|
/* save LUN handle assigned by FSF */
|
|
unit->handle = header->lun_handle;
|
|
ZFCP_LOG_TRACE("unit 0x%016Lx on remote port 0x%016Lx on "
|
|
"adapter %s opened, port handle 0x%x\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
unit->handle);
|
|
/* mark unit as open */
|
|
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
|
|
|
|
if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
|
|
(adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
|
|
(adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) {
|
|
exclusive = (bottom->lun_access_info &
|
|
FSF_UNIT_ACCESS_EXCLUSIVE);
|
|
readwrite = (bottom->lun_access_info &
|
|
FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
|
|
|
|
if (!exclusive)
|
|
atomic_set_mask(ZFCP_STATUS_UNIT_SHARED,
|
|
&unit->status);
|
|
|
|
if (!readwrite) {
|
|
atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
|
|
&unit->status);
|
|
ZFCP_LOG_NORMAL("read-only access for unit "
|
|
"(adapter %s, wwpn=0x%016Lx, "
|
|
"fcp_lun=0x%016Lx)\n",
|
|
zfcp_get_busid_by_unit(unit),
|
|
unit->port->wwpn,
|
|
unit->fcp_lun);
|
|
}
|
|
|
|
if (exclusive && !readwrite) {
|
|
ZFCP_LOG_NORMAL("exclusive access of read-only "
|
|
"unit not supported\n");
|
|
zfcp_erp_unit_failed(unit);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
zfcp_erp_unit_shutdown(unit, 0);
|
|
} else if (!exclusive && readwrite) {
|
|
ZFCP_LOG_NORMAL("shared access of read-write "
|
|
"unit not supported\n");
|
|
zfcp_erp_unit_failed(unit);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
zfcp_erp_unit_shutdown(unit, 0);
|
|
}
|
|
}
|
|
|
|
retval = 0;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
|
|
"(debug info 0x%x)\n",
|
|
header->fsf_status);
|
|
debug_text_event(adapter->erp_dbf, 0, "fsf_s_inval:");
|
|
debug_exception(adapter->erp_dbf, 0,
|
|
&header->fsf_status, sizeof (u32));
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_close_unit
|
|
*
|
|
* purpose:
|
|
*
|
|
* returns: address of fsf_req - request successfully initiated
|
|
* NULL -
|
|
*
|
|
* assumptions: This routine does not check whether the associated
|
|
* remote port/lun has already been opened. This should be
|
|
* done by calling routines. Otherwise some status
|
|
* may be presented by FSF
|
|
*/
|
|
int
|
|
zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
unsigned long lock_flags;
|
|
int retval = 0;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(erp_action->adapter,
|
|
FSF_QTCB_CLOSE_LUN,
|
|
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
|
|
erp_action->adapter->pool.fsf_req_erp,
|
|
&lock_flags, &fsf_req);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("error: Could not create close unit request for "
|
|
"unit 0x%016Lx on port 0x%016Lx on adapter %s.\n",
|
|
erp_action->unit->fcp_lun,
|
|
erp_action->port->wwpn,
|
|
zfcp_get_busid_by_adapter(erp_action->adapter));
|
|
goto out;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
fsf_req->qtcb->header.port_handle = erp_action->port->handle;
|
|
fsf_req->qtcb->header.lun_handle = erp_action->unit->handle;
|
|
atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status);
|
|
fsf_req->data = (unsigned long) erp_action->unit;
|
|
fsf_req->erp_action = erp_action;
|
|
erp_action->fsf_req = fsf_req;
|
|
|
|
zfcp_erp_start_timer(fsf_req);
|
|
retval = zfcp_fsf_req_send(erp_action->fsf_req);
|
|
if (retval) {
|
|
ZFCP_LOG_INFO("error: Could not send a close unit request for "
|
|
"unit 0x%016Lx on port 0x%016Lx onadapter %s.\n",
|
|
erp_action->unit->fcp_lun,
|
|
erp_action->port->wwpn,
|
|
zfcp_get_busid_by_adapter(erp_action->adapter));
|
|
zfcp_fsf_req_free(fsf_req);
|
|
erp_action->fsf_req = NULL;
|
|
goto out;
|
|
}
|
|
|
|
ZFCP_LOG_TRACE("Close LUN request initiated (adapter %s, "
|
|
"port 0x%016Lx, unit 0x%016Lx)\n",
|
|
zfcp_get_busid_by_adapter(erp_action->adapter),
|
|
erp_action->port->wwpn, erp_action->unit->fcp_lun);
|
|
out:
|
|
write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
|
|
lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_close_unit_handler
|
|
*
|
|
* purpose: is called for finished Close LUN FSF command
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
int retval = -EINVAL;
|
|
struct zfcp_unit *unit;
|
|
|
|
unit = (struct zfcp_unit *) fsf_req->data;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
|
|
/* don't change unit status in our bookkeeping */
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
/* evaluate FSF status in QTCB */
|
|
switch (fsf_req->qtcb->header.fsf_status) {
|
|
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
|
|
"0x%016Lx on adapter %s invalid. This may "
|
|
"happen in rare circumstances\n",
|
|
unit->port->handle,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
ZFCP_LOG_DEBUG("status qualifier:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &fsf_req->qtcb->header.fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_phand_nv");
|
|
zfcp_erp_adapter_reopen(unit->port->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_LUN_HANDLE_NOT_VALID:
|
|
ZFCP_LOG_INFO("Temporary LUN identifier 0x%x of unit "
|
|
"0x%016Lx on port 0x%016Lx on adapter %s is "
|
|
"invalid. This may happen occasionally.\n",
|
|
unit->handle,
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
ZFCP_LOG_DEBUG("Status qualifier data:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &fsf_req->qtcb->header.fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_lhand_nv");
|
|
zfcp_erp_port_reopen(unit->port, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_PORT_BOXED:
|
|
ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
|
|
"needs to be reopened\n",
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 2, "fsf_s_pboxed");
|
|
zfcp_erp_port_boxed(unit->port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
|
|
ZFCP_STATUS_FSFREQ_RETRY;
|
|
break;
|
|
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
/* re-establish link to port */
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_sq_ltest");
|
|
zfcp_test_link(unit->port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
/* ERP strategy will escalate */
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_sq_ulp");
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL
|
|
("bug: Wrong status qualifier 0x%x arrived.\n",
|
|
fsf_req->qtcb->header.fsf_status_qual.word[0]);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_sq_inval:");
|
|
debug_exception(
|
|
fsf_req->adapter->erp_dbf, 0,
|
|
&fsf_req->qtcb->header.fsf_status_qual.word[0],
|
|
sizeof (u32));
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case FSF_GOOD:
|
|
ZFCP_LOG_TRACE("unit 0x%016Lx on port 0x%016Lx on adapter %s "
|
|
"closed, port handle 0x%x\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
unit->handle);
|
|
/* mark unit as closed */
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
|
|
retval = 0;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
|
|
"(debug info 0x%x)\n",
|
|
fsf_req->qtcb->header.fsf_status);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:");
|
|
debug_exception(fsf_req->adapter->erp_dbf, 0,
|
|
&fsf_req->qtcb->header.fsf_status,
|
|
sizeof (u32));
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status);
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
|
|
* @adapter: adapter where scsi command is issued
|
|
* @unit: unit where command is sent to
|
|
* @scsi_cmnd: scsi command to be sent
|
|
* @timer: timer to be started when request is initiated
|
|
* @req_flags: flags for fsf_request
|
|
*/
|
|
int
|
|
zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter,
|
|
struct zfcp_unit *unit,
|
|
struct scsi_cmnd * scsi_cmnd,
|
|
int use_timer, int req_flags)
|
|
{
|
|
struct zfcp_fsf_req *fsf_req = NULL;
|
|
struct fcp_cmnd_iu *fcp_cmnd_iu;
|
|
unsigned int sbtype;
|
|
unsigned long lock_flags;
|
|
int real_bytes = 0;
|
|
int retval = 0;
|
|
int mask;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
|
|
adapter->pool.fsf_req_scsi,
|
|
&lock_flags, &fsf_req);
|
|
if (unlikely(retval < 0)) {
|
|
ZFCP_LOG_DEBUG("error: Could not create FCP command request "
|
|
"for unit 0x%016Lx on port 0x%016Lx on "
|
|
"adapter %s\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
goto failed_req_create;
|
|
}
|
|
|
|
if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
|
|
&unit->status))) {
|
|
retval = -EBUSY;
|
|
goto unit_blocked;
|
|
}
|
|
|
|
zfcp_unit_get(unit);
|
|
fsf_req->unit = unit;
|
|
|
|
/* associate FSF request with SCSI request (for look up on abort) */
|
|
scsi_cmnd->host_scribble = (unsigned char *) fsf_req->req_id;
|
|
|
|
/* associate SCSI command with FSF request */
|
|
fsf_req->data = (unsigned long) scsi_cmnd;
|
|
|
|
/* set handles of unit and its parent port in QTCB */
|
|
fsf_req->qtcb->header.lun_handle = unit->handle;
|
|
fsf_req->qtcb->header.port_handle = unit->port->handle;
|
|
|
|
/* FSF does not define the structure of the FCP_CMND IU */
|
|
fcp_cmnd_iu = (struct fcp_cmnd_iu *)
|
|
&(fsf_req->qtcb->bottom.io.fcp_cmnd);
|
|
|
|
/*
|
|
* set depending on data direction:
|
|
* data direction bits in SBALE (SB Type)
|
|
* data direction bits in QTCB
|
|
* data direction bits in FCP_CMND IU
|
|
*/
|
|
switch (scsi_cmnd->sc_data_direction) {
|
|
case DMA_NONE:
|
|
fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
|
|
/*
|
|
* FIXME(qdio):
|
|
* what is the correct type for commands
|
|
* without 'real' data buffers?
|
|
*/
|
|
sbtype = SBAL_FLAGS0_TYPE_READ;
|
|
break;
|
|
case DMA_FROM_DEVICE:
|
|
fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
|
|
sbtype = SBAL_FLAGS0_TYPE_READ;
|
|
fcp_cmnd_iu->rddata = 1;
|
|
break;
|
|
case DMA_TO_DEVICE:
|
|
fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
|
|
sbtype = SBAL_FLAGS0_TYPE_WRITE;
|
|
fcp_cmnd_iu->wddata = 1;
|
|
break;
|
|
case DMA_BIDIRECTIONAL:
|
|
default:
|
|
/*
|
|
* dummy, catch this condition earlier
|
|
* in zfcp_scsi_queuecommand
|
|
*/
|
|
goto failed_scsi_cmnd;
|
|
}
|
|
|
|
/* set FC service class in QTCB (3 per default) */
|
|
fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT;
|
|
|
|
/* set FCP_LUN in FCP_CMND IU in QTCB */
|
|
fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
|
|
|
|
mask = ZFCP_STATUS_UNIT_READONLY | ZFCP_STATUS_UNIT_SHARED;
|
|
|
|
/* set task attributes in FCP_CMND IU in QTCB */
|
|
if (likely((scsi_cmnd->device->simple_tags) ||
|
|
(atomic_test_mask(mask, &unit->status))))
|
|
fcp_cmnd_iu->task_attribute = SIMPLE_Q;
|
|
else
|
|
fcp_cmnd_iu->task_attribute = UNTAGGED;
|
|
|
|
/* set additional length of FCP_CDB in FCP_CMND IU in QTCB, if needed */
|
|
if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) {
|
|
fcp_cmnd_iu->add_fcp_cdb_length
|
|
= (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2;
|
|
ZFCP_LOG_TRACE("SCSI CDB length is 0x%x, "
|
|
"additional FCP_CDB length is 0x%x "
|
|
"(shifted right 2 bits)\n",
|
|
scsi_cmnd->cmd_len,
|
|
fcp_cmnd_iu->add_fcp_cdb_length);
|
|
}
|
|
/*
|
|
* copy SCSI CDB (including additional length, if any) to
|
|
* FCP_CDB in FCP_CMND IU in QTCB
|
|
*/
|
|
memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
|
|
|
|
/* FCP CMND IU length in QTCB */
|
|
fsf_req->qtcb->bottom.io.fcp_cmnd_length =
|
|
sizeof (struct fcp_cmnd_iu) +
|
|
fcp_cmnd_iu->add_fcp_cdb_length + sizeof (fcp_dl_t);
|
|
|
|
/* generate SBALEs from data buffer */
|
|
real_bytes = zfcp_qdio_sbals_from_scsicmnd(fsf_req, sbtype, scsi_cmnd);
|
|
if (unlikely(real_bytes < 0)) {
|
|
if (fsf_req->sbal_number < ZFCP_MAX_SBALS_PER_REQ) {
|
|
ZFCP_LOG_DEBUG(
|
|
"Data did not fit into available buffer(s), "
|
|
"waiting for more...\n");
|
|
retval = -EIO;
|
|
} else {
|
|
ZFCP_LOG_NORMAL("error: No truncation implemented but "
|
|
"required. Shutting down unit "
|
|
"(adapter %s, port 0x%016Lx, "
|
|
"unit 0x%016Lx)\n",
|
|
zfcp_get_busid_by_unit(unit),
|
|
unit->port->wwpn,
|
|
unit->fcp_lun);
|
|
zfcp_erp_unit_shutdown(unit, 0);
|
|
retval = -EINVAL;
|
|
}
|
|
goto no_fit;
|
|
}
|
|
|
|
/* set length of FCP data length in FCP_CMND IU in QTCB */
|
|
zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes);
|
|
|
|
ZFCP_LOG_DEBUG("Sending SCSI command:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
|
|
|
|
if (use_timer)
|
|
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
if (unlikely(retval < 0)) {
|
|
ZFCP_LOG_INFO("error: Could not send FCP command request "
|
|
"on adapter %s, port 0x%016Lx, unit 0x%016Lx\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
unit->port->wwpn,
|
|
unit->fcp_lun);
|
|
goto send_failed;
|
|
}
|
|
|
|
ZFCP_LOG_TRACE("Send FCP Command initiated (adapter %s, "
|
|
"port 0x%016Lx, unit 0x%016Lx)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
unit->port->wwpn,
|
|
unit->fcp_lun);
|
|
goto success;
|
|
|
|
send_failed:
|
|
no_fit:
|
|
failed_scsi_cmnd:
|
|
unit_blocked:
|
|
zfcp_unit_put(unit);
|
|
zfcp_fsf_req_free(fsf_req);
|
|
fsf_req = NULL;
|
|
scsi_cmnd->host_scribble = NULL;
|
|
success:
|
|
failed_req_create:
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
|
|
return retval;
|
|
}
|
|
|
|
struct zfcp_fsf_req *
|
|
zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter *adapter,
|
|
struct zfcp_unit *unit,
|
|
u8 tm_flags, int req_flags)
|
|
{
|
|
struct zfcp_fsf_req *fsf_req = NULL;
|
|
int retval = 0;
|
|
struct fcp_cmnd_iu *fcp_cmnd_iu;
|
|
unsigned long lock_flags;
|
|
volatile struct qdio_buffer_element *sbale;
|
|
|
|
/* setup new FSF request */
|
|
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
|
|
adapter->pool.fsf_req_scsi,
|
|
&lock_flags, &fsf_req);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("error: Could not create FCP command (task "
|
|
"management) request for adapter %s, port "
|
|
" 0x%016Lx, unit 0x%016Lx.\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
unit->port->wwpn, unit->fcp_lun);
|
|
goto out;
|
|
}
|
|
|
|
if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
|
|
&unit->status)))
|
|
goto unit_blocked;
|
|
|
|
/*
|
|
* Used to decide on proper handler in the return path,
|
|
* could be either zfcp_fsf_send_fcp_command_task_handler or
|
|
* zfcp_fsf_send_fcp_command_task_management_handler */
|
|
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
|
|
|
|
/*
|
|
* hold a pointer to the unit being target of this
|
|
* task management request
|
|
*/
|
|
fsf_req->data = (unsigned long) unit;
|
|
|
|
/* set FSF related fields in QTCB */
|
|
fsf_req->qtcb->header.lun_handle = unit->handle;
|
|
fsf_req->qtcb->header.port_handle = unit->port->handle;
|
|
fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
|
|
fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT;
|
|
fsf_req->qtcb->bottom.io.fcp_cmnd_length =
|
|
sizeof (struct fcp_cmnd_iu) + sizeof (fcp_dl_t);
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
/* set FCP related fields in FCP_CMND IU in QTCB */
|
|
fcp_cmnd_iu = (struct fcp_cmnd_iu *)
|
|
&(fsf_req->qtcb->bottom.io.fcp_cmnd);
|
|
fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
|
|
fcp_cmnd_iu->task_management_flags = tm_flags;
|
|
|
|
zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT);
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
if (!retval)
|
|
goto out;
|
|
|
|
unit_blocked:
|
|
zfcp_fsf_req_free(fsf_req);
|
|
fsf_req = NULL;
|
|
|
|
out:
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
|
|
return fsf_req;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_send_fcp_command_handler
|
|
*
|
|
* purpose: is called for finished Send FCP Command
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
int retval = -EINVAL;
|
|
struct zfcp_unit *unit;
|
|
struct fsf_qtcb_header *header;
|
|
u16 subtable, rule, counter;
|
|
|
|
header = &fsf_req->qtcb->header;
|
|
|
|
if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
|
|
unit = (struct zfcp_unit *) fsf_req->data;
|
|
else
|
|
unit = fsf_req->unit;
|
|
|
|
if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
|
|
/* go directly to calls of special handlers */
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
/* evaluate FSF status in QTCB */
|
|
switch (header->fsf_status) {
|
|
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
|
|
"0x%016Lx on adapter %s invalid\n",
|
|
unit->port->handle,
|
|
unit->port->wwpn, zfcp_get_busid_by_unit(unit));
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &header->fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_phand_nv");
|
|
zfcp_erp_adapter_reopen(unit->port->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_LUN_HANDLE_NOT_VALID:
|
|
ZFCP_LOG_INFO("Temporary LUN identifier 0x%x for unit "
|
|
"0x%016Lx on port 0x%016Lx on adapter %s is "
|
|
"invalid. This may happen occasionally.\n",
|
|
unit->handle,
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
ZFCP_LOG_NORMAL("Status qualifier data:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
|
|
(char *) &header->fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_uhand_nv");
|
|
zfcp_erp_port_reopen(unit->port, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_HANDLE_MISMATCH:
|
|
ZFCP_LOG_NORMAL("bug: The port handle 0x%x has changed "
|
|
"unexpectedly. (adapter %s, port 0x%016Lx, "
|
|
"unit 0x%016Lx)\n",
|
|
unit->port->handle,
|
|
zfcp_get_busid_by_unit(unit),
|
|
unit->port->wwpn,
|
|
unit->fcp_lun);
|
|
ZFCP_LOG_NORMAL("status qualifier:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
|
|
(char *) &header->fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_hand_mis");
|
|
zfcp_erp_adapter_reopen(unit->port->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
|
|
ZFCP_LOG_INFO("error: adapter %s does not support fc "
|
|
"class %d.\n",
|
|
zfcp_get_busid_by_unit(unit),
|
|
ZFCP_FC_SERVICE_CLASS_DEFAULT);
|
|
/* stop operation for this adapter */
|
|
debug_text_exception(fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_s_class_nsup");
|
|
zfcp_erp_adapter_shutdown(unit->port->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_FCPLUN_NOT_VALID:
|
|
ZFCP_LOG_NORMAL("bug: unit 0x%016Lx on port 0x%016Lx on "
|
|
"adapter %s does not have correct unit "
|
|
"handle 0x%x\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
unit->handle);
|
|
ZFCP_LOG_DEBUG("status qualifier:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &header->fsf_status_qual,
|
|
sizeof (union fsf_status_qual));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_s_fcp_lun_nv");
|
|
zfcp_erp_port_reopen(unit->port, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_ACCESS_DENIED:
|
|
ZFCP_LOG_NORMAL("Access denied, cannot send FCP command to "
|
|
"unit 0x%016Lx on port 0x%016Lx on "
|
|
"adapter %s\n", unit->fcp_lun, unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
for (counter = 0; counter < 2; counter++) {
|
|
subtable = header->fsf_status_qual.halfword[counter * 2];
|
|
rule = header->fsf_status_qual.halfword[counter * 2 + 1];
|
|
switch (subtable) {
|
|
case FSF_SQ_CFDC_SUBTABLE_OS:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
|
|
case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
|
|
case FSF_SQ_CFDC_SUBTABLE_LUN:
|
|
ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
|
|
zfcp_act_subtable_type[subtable], rule);
|
|
break;
|
|
}
|
|
}
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access");
|
|
zfcp_erp_unit_access_denied(unit);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_DIRECTION_INDICATOR_NOT_VALID:
|
|
ZFCP_LOG_INFO("bug: Invalid data direction given for unit "
|
|
"0x%016Lx on port 0x%016Lx on adapter %s "
|
|
"(debug info %d)\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
fsf_req->qtcb->bottom.io.data_direction);
|
|
/* stop operation for this adapter */
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_s_dir_ind_nv");
|
|
zfcp_erp_adapter_shutdown(unit->port->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_CMND_LENGTH_NOT_VALID:
|
|
ZFCP_LOG_NORMAL
|
|
("bug: An invalid control-data-block length field "
|
|
"was found in a command for unit 0x%016Lx on port "
|
|
"0x%016Lx on adapter %s " "(debug info %d)\n",
|
|
unit->fcp_lun, unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
fsf_req->qtcb->bottom.io.fcp_cmnd_length);
|
|
/* stop operation for this adapter */
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_s_cmd_len_nv");
|
|
zfcp_erp_adapter_shutdown(unit->port->adapter, 0);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_PORT_BOXED:
|
|
ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
|
|
"needs to be reopened\n",
|
|
unit->port->wwpn, zfcp_get_busid_by_unit(unit));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 2, "fsf_s_pboxed");
|
|
zfcp_erp_port_boxed(unit->port);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
|
|
ZFCP_STATUS_FSFREQ_RETRY;
|
|
break;
|
|
|
|
case FSF_LUN_BOXED:
|
|
ZFCP_LOG_NORMAL("unit needs to be reopened (adapter %s, "
|
|
"wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n",
|
|
zfcp_get_busid_by_unit(unit),
|
|
unit->port->wwpn, unit->fcp_lun);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_lboxed");
|
|
zfcp_erp_unit_boxed(unit);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
|
|
| ZFCP_STATUS_FSFREQ_RETRY;
|
|
break;
|
|
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
/* re-establish link to port */
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_sq_ltest");
|
|
zfcp_test_link(unit->port);
|
|
break;
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
/* FIXME(hw) need proper specs for proper action */
|
|
/* let scsi stack deal with retries and escalation */
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 1,
|
|
"fsf_sq_ulp");
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL
|
|
("Unknown status qualifier 0x%x arrived.\n",
|
|
header->fsf_status_qual.word[0]);
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0,
|
|
"fsf_sq_inval:");
|
|
debug_exception(fsf_req->adapter->erp_dbf, 0,
|
|
&header->fsf_status_qual.word[0],
|
|
sizeof(u32));
|
|
break;
|
|
}
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
|
|
case FSF_GOOD:
|
|
break;
|
|
|
|
case FSF_FCP_RSP_AVAILABLE:
|
|
break;
|
|
|
|
default:
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:");
|
|
debug_exception(fsf_req->adapter->erp_dbf, 0,
|
|
&header->fsf_status, sizeof(u32));
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) {
|
|
retval =
|
|
zfcp_fsf_send_fcp_command_task_management_handler(fsf_req);
|
|
} else {
|
|
retval = zfcp_fsf_send_fcp_command_task_handler(fsf_req);
|
|
fsf_req->unit = NULL;
|
|
zfcp_unit_put(unit);
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_send_fcp_command_task_handler
|
|
*
|
|
* purpose: evaluates FCP_RSP IU
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
int retval = 0;
|
|
struct scsi_cmnd *scpnt;
|
|
struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
|
|
&(fsf_req->qtcb->bottom.io.fcp_rsp);
|
|
struct fcp_cmnd_iu *fcp_cmnd_iu = (struct fcp_cmnd_iu *)
|
|
&(fsf_req->qtcb->bottom.io.fcp_cmnd);
|
|
u32 sns_len;
|
|
char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu);
|
|
unsigned long flags;
|
|
struct zfcp_unit *unit = fsf_req->unit;
|
|
|
|
read_lock_irqsave(&fsf_req->adapter->abort_lock, flags);
|
|
scpnt = (struct scsi_cmnd *) fsf_req->data;
|
|
if (unlikely(!scpnt)) {
|
|
ZFCP_LOG_DEBUG
|
|
("Command with fsf_req %p is not associated to "
|
|
"a scsi command anymore. Aborted?\n", fsf_req);
|
|
goto out;
|
|
}
|
|
if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTED)) {
|
|
/* FIXME: (design) mid-layer should handle DID_ABORT like
|
|
* DID_SOFT_ERROR by retrying the request for devices
|
|
* that allow retries.
|
|
*/
|
|
ZFCP_LOG_DEBUG("Setting DID_SOFT_ERROR and SUGGEST_RETRY\n");
|
|
set_host_byte(&scpnt->result, DID_SOFT_ERROR);
|
|
set_driver_byte(&scpnt->result, SUGGEST_RETRY);
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
|
|
ZFCP_LOG_DEBUG("Setting DID_ERROR\n");
|
|
set_host_byte(&scpnt->result, DID_ERROR);
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
/* set message byte of result in SCSI command */
|
|
scpnt->result |= COMMAND_COMPLETE << 8;
|
|
|
|
/*
|
|
* copy SCSI status code of FCP_STATUS of FCP_RSP IU to status byte
|
|
* of result in SCSI command
|
|
*/
|
|
scpnt->result |= fcp_rsp_iu->scsi_status;
|
|
if (unlikely(fcp_rsp_iu->scsi_status)) {
|
|
/* DEBUG */
|
|
ZFCP_LOG_DEBUG("status for SCSI Command:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
scpnt->cmnd, scpnt->cmd_len);
|
|
ZFCP_LOG_DEBUG("SCSI status code 0x%x\n",
|
|
fcp_rsp_iu->scsi_status);
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(void *) fcp_rsp_iu, sizeof (struct fcp_rsp_iu));
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu),
|
|
fcp_rsp_iu->fcp_sns_len);
|
|
}
|
|
|
|
/* check FCP_RSP_INFO */
|
|
if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) {
|
|
ZFCP_LOG_DEBUG("rsp_len is valid\n");
|
|
switch (fcp_rsp_info[3]) {
|
|
case RSP_CODE_GOOD:
|
|
/* ok, continue */
|
|
ZFCP_LOG_TRACE("no failure or Task Management "
|
|
"Function complete\n");
|
|
set_host_byte(&scpnt->result, DID_OK);
|
|
break;
|
|
case RSP_CODE_LENGTH_MISMATCH:
|
|
/* hardware bug */
|
|
ZFCP_LOG_NORMAL("bug: FCP response code indictates "
|
|
"that the fibrechannel protocol data "
|
|
"length differs from the burst length. "
|
|
"The problem occured on unit 0x%016Lx "
|
|
"on port 0x%016Lx on adapter %s",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
/* dump SCSI CDB as prepared by zfcp */
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &fsf_req->qtcb->
|
|
bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE);
|
|
set_host_byte(&scpnt->result, DID_ERROR);
|
|
goto skip_fsfstatus;
|
|
case RSP_CODE_FIELD_INVALID:
|
|
/* driver or hardware bug */
|
|
ZFCP_LOG_NORMAL("bug: FCP response code indictates "
|
|
"that the fibrechannel protocol data "
|
|
"fields were incorrectly set up. "
|
|
"The problem occured on the unit "
|
|
"0x%016Lx on port 0x%016Lx on "
|
|
"adapter %s",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
/* dump SCSI CDB as prepared by zfcp */
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &fsf_req->qtcb->
|
|
bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE);
|
|
set_host_byte(&scpnt->result, DID_ERROR);
|
|
goto skip_fsfstatus;
|
|
case RSP_CODE_RO_MISMATCH:
|
|
/* hardware bug */
|
|
ZFCP_LOG_NORMAL("bug: The FCP response code indicates "
|
|
"that conflicting values for the "
|
|
"fibrechannel payload offset from the "
|
|
"header were found. "
|
|
"The problem occured on unit 0x%016Lx "
|
|
"on port 0x%016Lx on adapter %s.\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
/* dump SCSI CDB as prepared by zfcp */
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &fsf_req->qtcb->
|
|
bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE);
|
|
set_host_byte(&scpnt->result, DID_ERROR);
|
|
goto skip_fsfstatus;
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: An invalid FCP response "
|
|
"code was detected for a command. "
|
|
"The problem occured on the unit "
|
|
"0x%016Lx on port 0x%016Lx on "
|
|
"adapter %s (debug info 0x%x)\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
fcp_rsp_info[3]);
|
|
/* dump SCSI CDB as prepared by zfcp */
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
|
|
(char *) &fsf_req->qtcb->
|
|
bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE);
|
|
set_host_byte(&scpnt->result, DID_ERROR);
|
|
goto skip_fsfstatus;
|
|
}
|
|
}
|
|
|
|
/* check for sense data */
|
|
if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) {
|
|
sns_len = FSF_FCP_RSP_SIZE -
|
|
sizeof (struct fcp_rsp_iu) + fcp_rsp_iu->fcp_rsp_len;
|
|
ZFCP_LOG_TRACE("room for %i bytes sense data in QTCB\n",
|
|
sns_len);
|
|
sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE);
|
|
ZFCP_LOG_TRACE("room for %i bytes sense data in SCSI command\n",
|
|
SCSI_SENSE_BUFFERSIZE);
|
|
sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len);
|
|
ZFCP_LOG_TRACE("scpnt->result =0x%x, command was:\n",
|
|
scpnt->result);
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE,
|
|
(void *) &scpnt->cmnd, scpnt->cmd_len);
|
|
|
|
ZFCP_LOG_TRACE("%i bytes sense data provided by FCP\n",
|
|
fcp_rsp_iu->fcp_sns_len);
|
|
memcpy(scpnt->sense_buffer,
|
|
zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len);
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE,
|
|
(void *)scpnt->sense_buffer, sns_len);
|
|
}
|
|
|
|
/* check for overrun */
|
|
if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_over)) {
|
|
ZFCP_LOG_INFO("A data overrun was detected for a command. "
|
|
"unit 0x%016Lx, port 0x%016Lx, adapter %s. "
|
|
"The response data length is "
|
|
"%d, the original length was %d.\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
fcp_rsp_iu->fcp_resid,
|
|
(int) zfcp_get_fcp_dl(fcp_cmnd_iu));
|
|
}
|
|
|
|
/* check for underrun */
|
|
if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) {
|
|
ZFCP_LOG_INFO("A data underrun was detected for a command. "
|
|
"unit 0x%016Lx, port 0x%016Lx, adapter %s. "
|
|
"The response data length is "
|
|
"%d, the original length was %d.\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
fcp_rsp_iu->fcp_resid,
|
|
(int) zfcp_get_fcp_dl(fcp_cmnd_iu));
|
|
|
|
scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid);
|
|
if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) <
|
|
scpnt->underflow)
|
|
set_host_byte(&scpnt->result, DID_ERROR);
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
ZFCP_LOG_DEBUG("scpnt->result =0x%x\n", scpnt->result);
|
|
|
|
if (scpnt->result != 0)
|
|
zfcp_scsi_dbf_event_result("erro", 3, fsf_req->adapter, scpnt, fsf_req);
|
|
else if (scpnt->retries > 0)
|
|
zfcp_scsi_dbf_event_result("retr", 4, fsf_req->adapter, scpnt, fsf_req);
|
|
else
|
|
zfcp_scsi_dbf_event_result("norm", 6, fsf_req->adapter, scpnt, fsf_req);
|
|
|
|
/* cleanup pointer (need this especially for abort) */
|
|
scpnt->host_scribble = NULL;
|
|
|
|
/* always call back */
|
|
(scpnt->scsi_done) (scpnt);
|
|
|
|
/*
|
|
* We must hold this lock until scsi_done has been called.
|
|
* Otherwise we may call scsi_done after abort regarding this
|
|
* command has completed.
|
|
* Note: scsi_done must not block!
|
|
*/
|
|
out:
|
|
read_unlock_irqrestore(&fsf_req->adapter->abort_lock, flags);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_send_fcp_command_task_management_handler
|
|
*
|
|
* purpose: evaluates FCP_RSP IU
|
|
*
|
|
* returns:
|
|
*/
|
|
static int
|
|
zfcp_fsf_send_fcp_command_task_management_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
int retval = 0;
|
|
struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
|
|
&(fsf_req->qtcb->bottom.io.fcp_rsp);
|
|
char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu);
|
|
struct zfcp_unit *unit = (struct zfcp_unit *) fsf_req->data;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
/* check FCP_RSP_INFO */
|
|
switch (fcp_rsp_info[3]) {
|
|
case RSP_CODE_GOOD:
|
|
/* ok, continue */
|
|
ZFCP_LOG_DEBUG("no failure or Task Management "
|
|
"Function complete\n");
|
|
break;
|
|
case RSP_CODE_TASKMAN_UNSUPP:
|
|
ZFCP_LOG_NORMAL("bug: A reuested task management function "
|
|
"is not supported on the target device "
|
|
"unit 0x%016Lx, port 0x%016Lx, adapter %s\n ",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP;
|
|
break;
|
|
case RSP_CODE_TASKMAN_FAILED:
|
|
ZFCP_LOG_NORMAL("bug: A reuested task management function "
|
|
"failed to complete successfully. "
|
|
"unit 0x%016Lx, port 0x%016Lx, adapter %s.\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
|
|
break;
|
|
default:
|
|
ZFCP_LOG_NORMAL("bug: An invalid FCP response "
|
|
"code was detected for a command. "
|
|
"unit 0x%016Lx, port 0x%016Lx, adapter %s "
|
|
"(debug info 0x%x)\n",
|
|
unit->fcp_lun,
|
|
unit->port->wwpn,
|
|
zfcp_get_busid_by_unit(unit),
|
|
fcp_rsp_info[3]);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
return retval;
|
|
}
|
|
|
|
|
|
/*
|
|
* function: zfcp_fsf_control_file
|
|
*
|
|
* purpose: Initiator of the control file upload/download FSF requests
|
|
*
|
|
* returns: 0 - FSF request is successfuly created and queued
|
|
* -EOPNOTSUPP - The FCP adapter does not have Control File support
|
|
* -EINVAL - Invalid direction specified
|
|
* -ENOMEM - Insufficient memory
|
|
* -EPERM - Cannot create FSF request or place it in QDIO queue
|
|
*/
|
|
int
|
|
zfcp_fsf_control_file(struct zfcp_adapter *adapter,
|
|
struct zfcp_fsf_req **fsf_req_ptr,
|
|
u32 fsf_command,
|
|
u32 option,
|
|
struct zfcp_sg_list *sg_list)
|
|
{
|
|
struct zfcp_fsf_req *fsf_req;
|
|
struct fsf_qtcb_bottom_support *bottom;
|
|
volatile struct qdio_buffer_element *sbale;
|
|
unsigned long lock_flags;
|
|
int req_flags = 0;
|
|
int direction;
|
|
int retval = 0;
|
|
|
|
if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) {
|
|
ZFCP_LOG_INFO("cfdc not supported (adapter %s)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
retval = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
switch (fsf_command) {
|
|
|
|
case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
|
|
direction = SBAL_FLAGS0_TYPE_WRITE;
|
|
if ((option != FSF_CFDC_OPTION_FULL_ACCESS) &&
|
|
(option != FSF_CFDC_OPTION_RESTRICTED_ACCESS))
|
|
req_flags = ZFCP_WAIT_FOR_SBAL;
|
|
break;
|
|
|
|
case FSF_QTCB_UPLOAD_CONTROL_FILE:
|
|
direction = SBAL_FLAGS0_TYPE_READ;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_INFO("Invalid FSF command code 0x%08x\n", fsf_command);
|
|
retval = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
retval = zfcp_fsf_req_create(adapter, fsf_command, req_flags,
|
|
NULL, &lock_flags, &fsf_req);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("error: Could not create FSF request for the "
|
|
"adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
retval = -EPERM;
|
|
goto unlock_queue_lock;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
sbale[0].flags |= direction;
|
|
|
|
bottom = &fsf_req->qtcb->bottom.support;
|
|
bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
|
|
bottom->option = option;
|
|
|
|
if (sg_list->count > 0) {
|
|
int bytes;
|
|
|
|
bytes = zfcp_qdio_sbals_from_sg(fsf_req, direction,
|
|
sg_list->sg, sg_list->count,
|
|
ZFCP_MAX_SBALS_PER_REQ);
|
|
if (bytes != ZFCP_CFDC_MAX_CONTROL_FILE_SIZE) {
|
|
ZFCP_LOG_INFO(
|
|
"error: Could not create sufficient number of "
|
|
"SBALS for an FSF request to the adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
retval = -ENOMEM;
|
|
goto free_fsf_req;
|
|
}
|
|
} else
|
|
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
|
|
|
|
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
retval = zfcp_fsf_req_send(fsf_req);
|
|
if (retval < 0) {
|
|
ZFCP_LOG_INFO("initiation of cfdc up/download failed"
|
|
"(adapter %s)\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
retval = -EPERM;
|
|
goto free_fsf_req;
|
|
}
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
|
|
|
|
ZFCP_LOG_NORMAL("Control file %s FSF request has been sent to the "
|
|
"adapter %s\n",
|
|
fsf_command == FSF_QTCB_DOWNLOAD_CONTROL_FILE ?
|
|
"download" : "upload",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
|
|
wait_event(fsf_req->completion_wq,
|
|
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
|
|
|
|
*fsf_req_ptr = fsf_req;
|
|
goto out;
|
|
|
|
free_fsf_req:
|
|
zfcp_fsf_req_free(fsf_req);
|
|
unlock_queue_lock:
|
|
write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
|
|
/*
|
|
* function: zfcp_fsf_control_file_handler
|
|
*
|
|
* purpose: Handler of the control file upload/download FSF requests
|
|
*
|
|
* returns: 0 - FSF request successfuly processed
|
|
* -EAGAIN - Operation has to be repeated because of a temporary problem
|
|
* -EACCES - There is no permission to execute an operation
|
|
* -EPERM - The control file is not in a right format
|
|
* -EIO - There is a problem with the FCP adapter
|
|
* -EINVAL - Invalid operation
|
|
* -EFAULT - User space memory I/O operation fault
|
|
*/
|
|
static int
|
|
zfcp_fsf_control_file_handler(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
struct zfcp_adapter *adapter = fsf_req->adapter;
|
|
struct fsf_qtcb_header *header = &fsf_req->qtcb->header;
|
|
struct fsf_qtcb_bottom_support *bottom = &fsf_req->qtcb->bottom.support;
|
|
int retval = 0;
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
|
|
retval = -EINVAL;
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
switch (header->fsf_status) {
|
|
|
|
case FSF_GOOD:
|
|
ZFCP_LOG_NORMAL(
|
|
"The FSF request has been successfully completed "
|
|
"on the adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
|
|
case FSF_OPERATION_PARTIALLY_SUCCESSFUL:
|
|
if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) {
|
|
switch (header->fsf_status_qual.word[0]) {
|
|
|
|
case FSF_SQ_CFDC_HARDENED_ON_SE:
|
|
ZFCP_LOG_NORMAL(
|
|
"CFDC on the adapter %s has being "
|
|
"hardened on primary and secondary SE\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
|
|
case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE:
|
|
ZFCP_LOG_NORMAL(
|
|
"CFDC of the adapter %s could not "
|
|
"be saved on the SE\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
|
|
case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2:
|
|
ZFCP_LOG_NORMAL(
|
|
"CFDC of the adapter %s could not "
|
|
"be copied to the secondary SE\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL(
|
|
"CFDC could not be hardened "
|
|
"on the adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
}
|
|
}
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EAGAIN;
|
|
break;
|
|
|
|
case FSF_AUTHORIZATION_FAILURE:
|
|
ZFCP_LOG_NORMAL(
|
|
"Adapter %s does not accept privileged commands\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EACCES;
|
|
break;
|
|
|
|
case FSF_CFDC_ERROR_DETECTED:
|
|
ZFCP_LOG_NORMAL(
|
|
"Error at position %d in the CFDC, "
|
|
"CFDC is discarded by the adapter %s\n",
|
|
header->fsf_status_qual.word[0],
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EPERM;
|
|
break;
|
|
|
|
case FSF_CONTROL_FILE_UPDATE_ERROR:
|
|
ZFCP_LOG_NORMAL(
|
|
"Adapter %s cannot harden the control file, "
|
|
"file is discarded\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EIO;
|
|
break;
|
|
|
|
case FSF_CONTROL_FILE_TOO_LARGE:
|
|
ZFCP_LOG_NORMAL(
|
|
"Control file is too large, file is discarded "
|
|
"by the adapter %s\n",
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EIO;
|
|
break;
|
|
|
|
case FSF_ACCESS_CONFLICT_DETECTED:
|
|
if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE)
|
|
ZFCP_LOG_NORMAL(
|
|
"CFDC has been discarded by the adapter %s, "
|
|
"because activation would impact "
|
|
"%d active connection(s)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
header->fsf_status_qual.word[0]);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EIO;
|
|
break;
|
|
|
|
case FSF_CONFLICTS_OVERRULED:
|
|
if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE)
|
|
ZFCP_LOG_NORMAL(
|
|
"CFDC has been activated on the adapter %s, "
|
|
"but activation has impacted "
|
|
"%d active connection(s)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
header->fsf_status_qual.word[0]);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EIO;
|
|
break;
|
|
|
|
case FSF_UNKNOWN_OP_SUBTYPE:
|
|
ZFCP_LOG_NORMAL("unknown operation subtype (adapter: %s, "
|
|
"op_subtype=0x%x)\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
bottom->operation_subtype);
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EINVAL;
|
|
break;
|
|
|
|
case FSF_INVALID_COMMAND_OPTION:
|
|
ZFCP_LOG_NORMAL(
|
|
"Invalid option 0x%x has been specified "
|
|
"in QTCB bottom sent to the adapter %s\n",
|
|
bottom->option,
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EINVAL;
|
|
break;
|
|
|
|
default:
|
|
ZFCP_LOG_NORMAL(
|
|
"bug: An unknown/unexpected FSF status 0x%08x "
|
|
"was presented on the adapter %s\n",
|
|
header->fsf_status,
|
|
zfcp_get_busid_by_adapter(adapter));
|
|
debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_sq_inval");
|
|
debug_exception(fsf_req->adapter->erp_dbf, 0,
|
|
&header->fsf_status_qual.word[0], sizeof(u32));
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
retval = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
return retval;
|
|
}
|
|
|
|
static inline int
|
|
zfcp_fsf_req_sbal_check(unsigned long *flags,
|
|
struct zfcp_qdio_queue *queue, int needed)
|
|
{
|
|
write_lock_irqsave(&queue->queue_lock, *flags);
|
|
if (likely(atomic_read(&queue->free_count) >= needed))
|
|
return 1;
|
|
write_unlock_irqrestore(&queue->queue_lock, *flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* set qtcb pointer in fsf_req and initialize QTCB
|
|
*/
|
|
static void
|
|
zfcp_fsf_req_qtcb_init(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
if (likely(fsf_req->qtcb != NULL)) {
|
|
fsf_req->qtcb->prefix.req_seq_no =
|
|
fsf_req->adapter->fsf_req_seq_no;
|
|
fsf_req->qtcb->prefix.req_id = fsf_req->req_id;
|
|
fsf_req->qtcb->prefix.ulp_info = ZFCP_ULP_INFO_VERSION;
|
|
fsf_req->qtcb->prefix.qtcb_type =
|
|
fsf_qtcb_type[fsf_req->fsf_command];
|
|
fsf_req->qtcb->prefix.qtcb_version = ZFCP_QTCB_VERSION;
|
|
fsf_req->qtcb->header.req_handle = fsf_req->req_id;
|
|
fsf_req->qtcb->header.fsf_command = fsf_req->fsf_command;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_req_sbal_get - try to get one SBAL in the request queue
|
|
* @adapter: adapter for which request queue is examined
|
|
* @req_flags: flags indicating whether to wait for needed SBAL or not
|
|
* @lock_flags: lock_flags if queue_lock is taken
|
|
* Return: 0 on success, otherwise -EIO, or -ERESTARTSYS
|
|
* Locks: lock adapter->request_queue->queue_lock on success
|
|
*/
|
|
static int
|
|
zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter, int req_flags,
|
|
unsigned long *lock_flags)
|
|
{
|
|
long ret;
|
|
struct zfcp_qdio_queue *req_queue = &adapter->request_queue;
|
|
|
|
if (unlikely(req_flags & ZFCP_WAIT_FOR_SBAL)) {
|
|
ret = wait_event_interruptible_timeout(adapter->request_wq,
|
|
zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1),
|
|
ZFCP_SBAL_TIMEOUT);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (!ret)
|
|
return -EIO;
|
|
} else if (!zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_req_create
|
|
*
|
|
* purpose: create an FSF request at the specified adapter and
|
|
* setup common fields
|
|
*
|
|
* returns: -ENOMEM if there was insufficient memory for a request
|
|
* -EIO if no qdio buffers could be allocate to the request
|
|
* -EINVAL/-EPERM on bug conditions in req_dequeue
|
|
* 0 in success
|
|
*
|
|
* note: The created request is returned by reference.
|
|
*
|
|
* locks: lock of concerned request queue must not be held,
|
|
* but is held on completion (write, irqsave)
|
|
*/
|
|
int
|
|
zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags,
|
|
mempool_t *pool, unsigned long *lock_flags,
|
|
struct zfcp_fsf_req **fsf_req_p)
|
|
{
|
|
volatile struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req = NULL;
|
|
int ret = 0;
|
|
struct zfcp_qdio_queue *req_queue = &adapter->request_queue;
|
|
|
|
/* allocate new FSF request */
|
|
fsf_req = zfcp_fsf_req_alloc(pool, req_flags);
|
|
if (unlikely(NULL == fsf_req)) {
|
|
ZFCP_LOG_DEBUG("error: Could not put an FSF request into "
|
|
"the outbound (send) queue.\n");
|
|
ret = -ENOMEM;
|
|
goto failed_fsf_req;
|
|
}
|
|
|
|
fsf_req->adapter = adapter;
|
|
fsf_req->fsf_command = fsf_cmd;
|
|
INIT_LIST_HEAD(&fsf_req->list);
|
|
init_timer(&fsf_req->timer);
|
|
|
|
/* initialize waitqueue which may be used to wait on
|
|
this request completion */
|
|
init_waitqueue_head(&fsf_req->completion_wq);
|
|
|
|
ret = zfcp_fsf_req_sbal_get(adapter, req_flags, lock_flags);
|
|
if (ret < 0)
|
|
goto failed_sbals;
|
|
|
|
/* this is serialized (we are holding req_queue-lock of adapter) */
|
|
if (adapter->req_no == 0)
|
|
adapter->req_no++;
|
|
fsf_req->req_id = adapter->req_no++;
|
|
|
|
zfcp_fsf_req_qtcb_init(fsf_req);
|
|
|
|
/*
|
|
* We hold queue_lock here. Check if QDIOUP is set and let request fail
|
|
* if it is not set (see also *_open_qdio and *_close_qdio).
|
|
*/
|
|
|
|
if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) {
|
|
write_unlock_irqrestore(&req_queue->queue_lock, *lock_flags);
|
|
ret = -EIO;
|
|
goto failed_sbals;
|
|
}
|
|
|
|
if (fsf_req->qtcb) {
|
|
fsf_req->seq_no = adapter->fsf_req_seq_no;
|
|
fsf_req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
|
|
}
|
|
fsf_req->sbal_number = 1;
|
|
fsf_req->sbal_first = req_queue->free_index;
|
|
fsf_req->sbal_curr = req_queue->free_index;
|
|
fsf_req->sbale_curr = 1;
|
|
|
|
if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) {
|
|
fsf_req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
}
|
|
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
|
|
|
|
/* setup common SBALE fields */
|
|
sbale[0].addr = (void *) fsf_req->req_id;
|
|
sbale[0].flags |= SBAL_FLAGS0_COMMAND;
|
|
if (likely(fsf_req->qtcb != NULL)) {
|
|
sbale[1].addr = (void *) fsf_req->qtcb;
|
|
sbale[1].length = sizeof(struct fsf_qtcb);
|
|
}
|
|
|
|
ZFCP_LOG_TRACE("got %i free BUFFERs starting at index %i\n",
|
|
fsf_req->sbal_number, fsf_req->sbal_first);
|
|
|
|
goto success;
|
|
|
|
failed_sbals:
|
|
/* dequeue new FSF request previously enqueued */
|
|
zfcp_fsf_req_free(fsf_req);
|
|
fsf_req = NULL;
|
|
|
|
failed_fsf_req:
|
|
write_lock_irqsave(&req_queue->queue_lock, *lock_flags);
|
|
success:
|
|
*fsf_req_p = fsf_req;
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* function: zfcp_fsf_req_send
|
|
*
|
|
* purpose: start transfer of FSF request via QDIO
|
|
*
|
|
* returns: 0 - request transfer succesfully started
|
|
* !0 - start of request transfer failed
|
|
*/
|
|
static int zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req)
|
|
{
|
|
struct zfcp_adapter *adapter;
|
|
struct zfcp_qdio_queue *req_queue;
|
|
volatile struct qdio_buffer_element *sbale;
|
|
int inc_seq_no;
|
|
int new_distance_from_int;
|
|
u64 dbg_tmp[2];
|
|
int retval = 0;
|
|
|
|
adapter = fsf_req->adapter;
|
|
req_queue = &adapter->request_queue,
|
|
|
|
|
|
/* FIXME(debug): remove it later */
|
|
sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_first, 0);
|
|
ZFCP_LOG_DEBUG("SBALE0 flags=0x%x\n", sbale[0].flags);
|
|
ZFCP_LOG_TRACE("HEX DUMP OF SBALE1 PAYLOAD:\n");
|
|
ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, (char *) sbale[1].addr,
|
|
sbale[1].length);
|
|
|
|
/* put allocated FSF request into hash table */
|
|
spin_lock(&adapter->req_list_lock);
|
|
zfcp_reqlist_add(adapter, fsf_req);
|
|
spin_unlock(&adapter->req_list_lock);
|
|
|
|
inc_seq_no = (fsf_req->qtcb != NULL);
|
|
|
|
ZFCP_LOG_TRACE("request queue of adapter %s: "
|
|
"next free SBAL is %i, %i free SBALs\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
req_queue->free_index,
|
|
atomic_read(&req_queue->free_count));
|
|
|
|
ZFCP_LOG_DEBUG("calling do_QDIO adapter %s, flags=0x%x, queue_no=%i, "
|
|
"index_in_queue=%i, count=%i, buffers=%p\n",
|
|
zfcp_get_busid_by_adapter(adapter),
|
|
QDIO_FLAG_SYNC_OUTPUT,
|
|
0, fsf_req->sbal_first, fsf_req->sbal_number,
|
|
&req_queue->buffer[fsf_req->sbal_first]);
|
|
|
|
/*
|
|
* adjust the number of free SBALs in request queue as well as
|
|
* position of first one
|
|
*/
|
|
atomic_sub(fsf_req->sbal_number, &req_queue->free_count);
|
|
ZFCP_LOG_TRACE("free_count=%d\n", atomic_read(&req_queue->free_count));
|
|
req_queue->free_index += fsf_req->sbal_number; /* increase */
|
|
req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap if needed */
|
|
new_distance_from_int = zfcp_qdio_determine_pci(req_queue, fsf_req);
|
|
|
|
fsf_req->issued = get_clock();
|
|
|
|
retval = do_QDIO(adapter->ccw_device,
|
|
QDIO_FLAG_SYNC_OUTPUT,
|
|
0, fsf_req->sbal_first, fsf_req->sbal_number, NULL);
|
|
|
|
dbg_tmp[0] = (unsigned long) sbale[0].addr;
|
|
dbg_tmp[1] = (u64) retval;
|
|
debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16);
|
|
|
|
if (unlikely(retval)) {
|
|
/* Queues are down..... */
|
|
retval = -EIO;
|
|
del_timer(&fsf_req->timer);
|
|
spin_lock(&adapter->req_list_lock);
|
|
zfcp_reqlist_remove(adapter, fsf_req);
|
|
spin_unlock(&adapter->req_list_lock);
|
|
/* undo changes in request queue made for this request */
|
|
zfcp_qdio_zero_sbals(req_queue->buffer,
|
|
fsf_req->sbal_first, fsf_req->sbal_number);
|
|
atomic_add(fsf_req->sbal_number, &req_queue->free_count);
|
|
req_queue->free_index -= fsf_req->sbal_number;
|
|
req_queue->free_index += QDIO_MAX_BUFFERS_PER_Q;
|
|
req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */
|
|
zfcp_erp_adapter_reopen(adapter, 0);
|
|
} else {
|
|
req_queue->distance_from_int = new_distance_from_int;
|
|
/*
|
|
* increase FSF sequence counter -
|
|
* this must only be done for request successfully enqueued to
|
|
* QDIO this rejected requests may be cleaned up by calling
|
|
* routines resulting in missing sequence counter values
|
|
* otherwise,
|
|
*/
|
|
|
|
/* Don't increase for unsolicited status */
|
|
if (inc_seq_no)
|
|
adapter->fsf_req_seq_no++;
|
|
|
|
/* count FSF requests pending */
|
|
atomic_inc(&adapter->reqs_active);
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
#undef ZFCP_LOG_AREA
|