/*
- * This file is part of the zfcp device driver for
- * FCP adapters for IBM System z9 and zSeries.
+ * zfcp device driver
*
- * (C) Copyright IBM Corp. 2002, 2006
+ * Implementation of FSF commands.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright IBM Corporation 2002, 2008
*/
+#define KMSG_COMPONENT "zfcp"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/blktrace_api.h>
#include "zfcp_ext.h"
-static int zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *);
-static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_open_port_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_close_port_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_send_fcp_command_task_management_handler(
- struct zfcp_fsf_req *);
-static int zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_status_read_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *);
-static int zfcp_fsf_control_file_handler(struct zfcp_fsf_req *);
-static inline int zfcp_fsf_req_sbal_check(
- unsigned long *, struct zfcp_qdio_queue *, int);
-static inline int zfcp_use_one_sbal(
- struct scatterlist *, int, struct scatterlist *, int);
-static struct zfcp_fsf_req *zfcp_fsf_req_alloc(mempool_t *, int);
-static int zfcp_fsf_req_send(struct zfcp_fsf_req *, struct timer_list *);
-static int zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *);
-static int zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *);
-static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *);
-static void zfcp_fsf_link_down_info_eval(struct zfcp_adapter *,
- struct fsf_link_down_info *);
-static int zfcp_fsf_req_dispatch(struct zfcp_fsf_req *);
+static void zfcp_fsf_request_timeout_handler(unsigned long data)
+{
+ struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
+ zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 62,
+ NULL);
+}
+
+static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
+ unsigned long timeout)
+{
+ fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
+ fsf_req->timer.data = (unsigned long) fsf_req->adapter;
+ fsf_req->timer.expires = jiffies + timeout;
+ add_timer(&fsf_req->timer);
+}
+
+static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
+{
+ BUG_ON(!fsf_req->erp_action);
+ fsf_req->timer.function = zfcp_erp_timeout_handler;
+ fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
+ fsf_req->timer.expires = jiffies + 30 * HZ;
+ add_timer(&fsf_req->timer);
+}
/* association between FSF command and FSF QTCB type */
static u32 fsf_qtcb_type[] = {
[FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
};
-static const char zfcp_act_subtable_type[5][8] = {
- "unknown", "OS", "WWPN", "DID", "LUN"
-};
-
-/****************************************************************/
-/*************** FSF related Functions *************************/
-/****************************************************************/
-
-#define ZFCP_LOG_AREA ZFCP_LOG_AREA_FSF
-
-/*
- * function: zfcp_fsf_req_alloc
- *
- * purpose: Obtains an fsf_req and potentially a qtcb (for all but
- * unsolicited requests) via helper functions
- * Does some initial fsf request set-up.
- *
- * returns: pointer to allocated fsf_req if successfull
- * NULL otherwise
- *
- * locks: none
- *
- */
-static struct zfcp_fsf_req *
-zfcp_fsf_req_alloc(mempool_t *pool, int req_flags)
+static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table)
{
- size_t size;
- void *ptr;
- struct zfcp_fsf_req *fsf_req = NULL;
-
- if (req_flags & ZFCP_REQ_NO_QTCB)
- size = sizeof(struct zfcp_fsf_req);
- else
- size = sizeof(struct zfcp_fsf_req_qtcb);
-
- if (likely(pool))
- ptr = mempool_alloc(pool, GFP_ATOMIC);
- else {
- if (req_flags & ZFCP_REQ_NO_QTCB)
- ptr = kmalloc(size, GFP_ATOMIC);
- else
- ptr = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache,
- SLAB_ATOMIC);
- }
-
- if (unlikely(!ptr))
- goto out;
-
- memset(ptr, 0, size);
+ u16 subtable = table >> 16;
+ u16 rule = table & 0xffff;
+ const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
+
+ if (subtable && subtable < ARRAY_SIZE(act_type))
+ dev_warn(&adapter->ccw_device->dev,
+ "Access denied according to ACT rule type %s, "
+ "rule %d\n", act_type[subtable], rule);
+}
- if (req_flags & ZFCP_REQ_NO_QTCB) {
- fsf_req = (struct zfcp_fsf_req *) ptr;
- } else {
- fsf_req = &((struct zfcp_fsf_req_qtcb *) ptr)->fsf_req;
- fsf_req->qtcb = &((struct zfcp_fsf_req_qtcb *) ptr)->qtcb;
- }
+static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req,
+ struct zfcp_port *port)
+{
+ struct fsf_qtcb_header *header = &req->qtcb->header;
+ dev_warn(&req->adapter->ccw_device->dev,
+ "Access denied to port 0x%016Lx\n",
+ (unsigned long long)port->wwpn);
+ zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
+ zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
+ zfcp_erp_port_access_denied(port, 55, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+}
- fsf_req->pool = pool;
+static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req,
+ struct zfcp_unit *unit)
+{
+ struct fsf_qtcb_header *header = &req->qtcb->header;
+ dev_warn(&req->adapter->ccw_device->dev,
+ "Access denied to unit 0x%016Lx on port 0x%016Lx\n",
+ (unsigned long long)unit->fcp_lun,
+ (unsigned long long)unit->port->wwpn);
+ zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
+ zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
+ zfcp_erp_unit_access_denied(unit, 59, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+}
- out:
- return fsf_req;
+static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
+{
+ dev_err(&req->adapter->ccw_device->dev, "FCP device not "
+ "operational because of an unsupported FC class\n");
+ zfcp_erp_adapter_shutdown(req->adapter, 0, 123, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
-/*
- * function: zfcp_fsf_req_free
- *
- * purpose: Frees the memory of an fsf_req (and potentially a qtcb) or
- * returns it into the pool via helper functions.
- *
- * returns: sod all
- *
- * locks: none
+/**
+ * zfcp_fsf_req_free - free memory used by fsf request
+ * @fsf_req: pointer to struct zfcp_fsf_req
*/
-void
-zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req)
+void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
{
- if (likely(fsf_req->pool)) {
- mempool_free(fsf_req, fsf_req->pool);
+ if (likely(req->pool)) {
+ mempool_free(req, req->pool);
return;
}
- if (fsf_req->qtcb) {
- kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, fsf_req);
+ if (req->qtcb) {
+ kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, req);
return;
}
-
- kfree(fsf_req);
-}
-
-/**
- * zfcp_fsf_req_dismiss - dismiss a single fsf request
- */
-static void zfcp_fsf_req_dismiss(struct zfcp_adapter *adapter,
- struct zfcp_fsf_req *fsf_req,
- unsigned int counter)
-{
- u64 dbg_tmp[2];
-
- dbg_tmp[0] = (u64) atomic_read(&adapter->reqs_active);
- dbg_tmp[1] = (u64) counter;
- debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16);
- list_del(&fsf_req->list);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
- zfcp_fsf_req_complete(fsf_req);
}
/**
- * zfcp_fsf_req_dismiss_all - dismiss all remaining fsf requests
+ * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
+ * @adapter: pointer to struct zfcp_adapter
+ *
+ * Never ever call this without shutting down the adapter first.
+ * Otherwise the adapter would continue using and corrupting s390 storage.
+ * Included BUG_ON() call to ensure this is done.
+ * ERP is supposed to be the only user of this function.
*/
-int zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
+void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
{
- struct zfcp_fsf_req *request, *tmp;
+ struct zfcp_fsf_req *req, *tmp;
unsigned long flags;
- unsigned int i, counter;
+ LIST_HEAD(remove_queue);
+ unsigned int i;
+ BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
spin_lock_irqsave(&adapter->req_list_lock, flags);
- atomic_set(&adapter->reqs_active, 0);
- for (i=0; i<REQUEST_LIST_SIZE; i++) {
- if (list_empty(&adapter->req_list[i]))
- continue;
-
- counter = 0;
- list_for_each_entry_safe(request, tmp,
- &adapter->req_list[i], list) {
- zfcp_fsf_req_dismiss(adapter, request, counter);
- counter++;
- }
- }
+ for (i = 0; i < REQUEST_LIST_SIZE; i++)
+ list_splice_init(&adapter->req_list[i], &remove_queue);
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
- return 0;
-}
-
-/*
- * function: zfcp_fsf_req_complete
- *
- * purpose: Updates active counts and timers for openfcp-reqs
- * May cleanup request after req_eval returns
- *
- * returns: 0 - success
- * !0 - failure
- *
- * context:
- */
-int
-zfcp_fsf_req_complete(struct zfcp_fsf_req *fsf_req)
-{
- int retval = 0;
- int cleanup;
-
- if (unlikely(fsf_req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
- ZFCP_LOG_DEBUG("Status read response received\n");
- /*
- * Note: all cleanup handling is done in the callchain of
- * the function call-chain below.
- */
- zfcp_fsf_status_read_handler(fsf_req);
- goto out;
- } else
- zfcp_fsf_protstatus_eval(fsf_req);
-
- /*
- * fsf_req may be deleted due to waking up functions, so
- * cleanup is saved here and used later
- */
- if (likely(fsf_req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
- cleanup = 1;
- else
- cleanup = 0;
-
- fsf_req->status |= ZFCP_STATUS_FSFREQ_COMPLETED;
-
- /* cleanup request if requested by initiator */
- if (likely(cleanup)) {
- ZFCP_LOG_TRACE("removing FSF request %p\n", fsf_req);
- /*
- * lock must not be held here since it will be
- * grabed by the called routine, too
- */
- zfcp_fsf_req_free(fsf_req);
- } else {
- /* notify initiator waiting for the requests completion */
- ZFCP_LOG_TRACE("waking initiator of FSF request %p\n",fsf_req);
- /*
- * FIXME: Race! We must not access fsf_req here as it might have been
- * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
- * flag. It's an improbable case. But, we have the same paranoia for
- * the cleanup flag already.
- * Might better be handled using complete()?
- * (setting the flag and doing wakeup ought to be atomic
- * with regard to checking the flag as long as waitqueue is
- * part of the to be released structure)
- */
- wake_up(&fsf_req->completion_wq);
+ list_for_each_entry_safe(req, tmp, &remove_queue, list) {
+ list_del(&req->list);
+ req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
+ zfcp_fsf_req_complete(req);
}
-
- out:
- return retval;
}
-/*
- * function: zfcp_fsf_protstatus_eval
- *
- * purpose: evaluates the QTCB of the finished FSF request
- * and initiates appropriate actions
- * (usually calling FSF command specific handlers)
- *
- * returns:
- *
- * context:
- *
- * locks:
- */
-static int
-zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *fsf_req)
+static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
{
- int retval = 0;
- struct zfcp_adapter *adapter = fsf_req->adapter;
- struct fsf_qtcb *qtcb = fsf_req->qtcb;
- union fsf_prot_status_qual *prot_status_qual =
- &qtcb->prefix.prot_status_qual;
-
- zfcp_hba_dbf_event_fsf_response(fsf_req);
-
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
- ZFCP_LOG_DEBUG("fsf_req 0x%lx has been dismissed\n",
- (unsigned long) fsf_req);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
- ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */
- goto skip_protstatus;
- }
+ struct fsf_status_read_buffer *sr_buf = req->data;
+ struct zfcp_adapter *adapter = req->adapter;
+ struct zfcp_port *port;
+ int d_id = sr_buf->d_id & ZFCP_DID_MASK;
+ unsigned long flags;
- /* log additional information provided by FSF (if any) */
- if (unlikely(qtcb->header.log_length)) {
- /* do not trust them ;-) */
- if (qtcb->header.log_start > sizeof(struct fsf_qtcb)) {
- ZFCP_LOG_NORMAL
- ("bug: ULP (FSF logging) log data starts "
- "beyond end of packet header. Ignored. "
- "(start=%i, size=%li)\n",
- qtcb->header.log_start,
- sizeof(struct fsf_qtcb));
- goto forget_log;
- }
- if ((size_t) (qtcb->header.log_start + qtcb->header.log_length)
- > sizeof(struct fsf_qtcb)) {
- ZFCP_LOG_NORMAL("bug: ULP (FSF logging) log data ends "
- "beyond end of packet header. Ignored. "
- "(start=%i, length=%i, size=%li)\n",
- qtcb->header.log_start,
- qtcb->header.log_length,
- sizeof(struct fsf_qtcb));
- goto forget_log;
+ read_lock_irqsave(&zfcp_data.config_lock, flags);
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ if (port->d_id == d_id) {
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
+ switch (sr_buf->status_subtype) {
+ case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT:
+ zfcp_erp_port_reopen(port, 0, 101, req);
+ break;
+ case FSF_STATUS_READ_SUB_ERROR_PORT:
+ zfcp_erp_port_shutdown(port, 0, 122, req);
+ break;
+ }
+ return;
}
- ZFCP_LOG_TRACE("ULP log data: \n");
- ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE,
- (char *) qtcb + qtcb->header.log_start,
- qtcb->header.log_length);
- }
- forget_log:
-
- /* evaluate FSF Protocol Status */
- switch (qtcb->prefix.prot_status) {
-
- case FSF_PROT_GOOD:
- case FSF_PROT_FSF_STATUS_PRESENTED:
- break;
-
- case FSF_PROT_QTCB_VERSION_ERROR:
- ZFCP_LOG_NORMAL("error: The adapter %s contains "
- "microcode of version 0x%x, the device driver "
- "only supports 0x%x. Aborting.\n",
- zfcp_get_busid_by_adapter(adapter),
- prot_status_qual->version_error.fsf_version,
- ZFCP_QTCB_VERSION);
- zfcp_erp_adapter_shutdown(adapter, 0);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_PROT_SEQ_NUMB_ERROR:
- ZFCP_LOG_NORMAL("bug: Sequence number mismatch between "
- "driver (0x%x) and adapter %s (0x%x). "
- "Restarting all operations on this adapter.\n",
- qtcb->prefix.req_seq_no,
- zfcp_get_busid_by_adapter(adapter),
- prot_status_qual->sequence_error.exp_req_seq_no);
- zfcp_erp_adapter_reopen(adapter, 0);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY;
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_PROT_UNSUPP_QTCB_TYPE:
- ZFCP_LOG_NORMAL("error: Packet header type used by the "
- "device driver is incompatible with "
- "that used on adapter %s. "
- "Stopping all operations on this adapter.\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_shutdown(adapter, 0);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_PROT_HOST_CONNECTION_INITIALIZING:
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
- &(adapter->status));
- break;
-
- case FSF_PROT_DUPLICATE_REQUEST_ID:
- ZFCP_LOG_NORMAL("bug: The request identifier 0x%Lx "
- "to the adapter %s is ambiguous. "
- "Stopping all operations on this adapter.\n",
- *(unsigned long long*)
- (&qtcb->bottom.support.req_handle),
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_shutdown(adapter, 0);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_PROT_LINK_DOWN:
- zfcp_fsf_link_down_info_eval(adapter,
- &prot_status_qual->link_down_info);
- zfcp_erp_adapter_reopen(adapter, 0);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_PROT_REEST_QUEUE:
- ZFCP_LOG_NORMAL("The local link to adapter with "
- "%s was re-plugged. "
- "Re-starting 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);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- case FSF_PROT_ERROR_STATE:
- ZFCP_LOG_NORMAL("error: The adapter %s "
- "has entered the error state. "
- "Restarting all operations on this "
- "adapter.\n",
- zfcp_get_busid_by_adapter(adapter));
- zfcp_erp_adapter_reopen(adapter, 0);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY;
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- break;
-
- default:
- ZFCP_LOG_NORMAL("bug: Transfer protocol status information "
- "provided by the adapter %s "
- "is not compatible with the device driver. "
- "Stopping all operations on this adapter. "
- "(debug info 0x%x).\n",
- zfcp_get_busid_by_adapter(adapter),
- qtcb->prefix.prot_status);
- zfcp_erp_adapter_shutdown(adapter, 0);
- fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
- }
-
- skip_protstatus:
- /*
- * always call specific handlers to give them a chance to do
- * something meaningful even in error cases
- */
- zfcp_fsf_fsfstatus_eval(fsf_req);
- return retval;
-}
-
-/*
- * function: zfcp_fsf_fsfstatus_eval
- *
- * purpose: evaluates FSF status of completed FSF request
- * and acts accordingly
- *
- * returns:
- */
-static int
-zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *fsf_req)
-{
- int retval = 0;
-
- 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;
+ read_unlock_irqrestore(&zfcp_data.config_lock, flags);
}
-/*
- * 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)
+static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id,
+ struct fsf_link_down_info *link_down)
{
- 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;
-}
+ struct zfcp_adapter *adapter = req->adapter;
-/**
- * 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))
+ if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
return;
atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
- if (link_down == NULL)
+ if (!link_down)
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));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "There is no light signal from the local "
+ "fibre channel cable\n");
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));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "There is a wrap plug instead of a fibre "
+ "channel cable\n");
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));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The adjacent fibre channel node does not "
+ "support FCP\n");
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;
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The FCP device is suspended because of a "
+ "firmware update\n");
+ 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));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The FCP device detected a WWPN that is "
+ "duplicate or not valid\n");
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));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The fibre channel fabric does not support NPIV\n");
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));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The FCP adapter cannot support more NPIV ports\n");
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));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The adjacent switch cannot support "
+ "more NPIV ports\n");
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));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The FCP adapter could not log in to the "
+ "fibre channel fabric\n");
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));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The WWPN assignment file on the FCP adapter "
+ "has been damaged\n");
break;
case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
- ZFCP_LOG_NORMAL("Mode table corrupted on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The mode table on the FCP adapter "
+ "has been damaged\n");
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));
+ dev_warn(&req->adapter->ccw_device->dev,
+ "All NPIV ports on the FCP adapter have "
+ "been assigned\n");
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);
+ dev_warn(&req->adapter->ccw_device->dev,
+ "The link between the FCP adapter and "
+ "the FC fabric is down\n");
}
-
- 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);
+out:
+ zfcp_erp_adapter_failed(adapter, id, req);
}
-/*
- * 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)
+static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
{
- struct zfcp_erp_action *erp_action = fsf_req->erp_action;
- struct zfcp_adapter *adapter = fsf_req->adapter;
- int retval = 0;
-
+ struct fsf_status_read_buffer *sr_buf = req->data;
+ struct fsf_link_down_info *ldi =
+ (struct fsf_link_down_info *) &sr_buf->payload;
- switch (fsf_req->fsf_command) {
-
- case FSF_QTCB_FCP_CMND:
- zfcp_fsf_send_fcp_command_handler(fsf_req);
+ switch (sr_buf->status_subtype) {
+ case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
+ zfcp_fsf_link_down_info_eval(req, 38, ldi);
break;
-
- case FSF_QTCB_ABORT_FCP_CMND:
- zfcp_fsf_abort_fcp_command_handler(fsf_req);
+ case FSF_STATUS_READ_SUB_FDISC_FAILED:
+ zfcp_fsf_link_down_info_eval(req, 39, ldi);
break;
+ case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
+ zfcp_fsf_link_down_info_eval(req, 40, NULL);
+ };
+}
- case FSF_QTCB_SEND_GENERIC:
- zfcp_fsf_send_ct_handler(fsf_req);
- break;
+static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_status_read_buffer *sr_buf = req->data;
- case FSF_QTCB_OPEN_PORT_WITH_DID:
- zfcp_fsf_open_port_handler(fsf_req);
- break;
+ if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
+ zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf);
+ mempool_free(sr_buf, adapter->pool.data_status_read);
+ zfcp_fsf_req_free(req);
+ return;
+ }
- case FSF_QTCB_OPEN_LUN:
- zfcp_fsf_open_unit_handler(fsf_req);
- break;
+ zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf);
- case FSF_QTCB_CLOSE_LUN:
- zfcp_fsf_close_unit_handler(fsf_req);
+ switch (sr_buf->status_type) {
+ case FSF_STATUS_READ_PORT_CLOSED:
+ zfcp_fsf_status_read_port_closed(req);
break;
-
- case FSF_QTCB_CLOSE_PORT:
- zfcp_fsf_close_port_handler(fsf_req);
+ case FSF_STATUS_READ_INCOMING_ELS:
+ zfcp_fc_incoming_els(req);
break;
-
- case FSF_QTCB_CLOSE_PHYSICAL_PORT:
- zfcp_fsf_close_physical_port_handler(fsf_req);
+ case FSF_STATUS_READ_SENSE_DATA_AVAIL:
break;
-
- case FSF_QTCB_EXCHANGE_CONFIG_DATA:
- zfcp_fsf_exchange_config_data_handler(fsf_req);
+ case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
+ dev_warn(&adapter->ccw_device->dev,
+ "The error threshold for checksum statistics "
+ "has been exceeded\n");
+ zfcp_hba_dbf_event_berr(adapter, req);
break;
-
- case FSF_QTCB_EXCHANGE_PORT_DATA:
- zfcp_fsf_exchange_port_data_handler(fsf_req);
+ case FSF_STATUS_READ_LINK_DOWN:
+ zfcp_fsf_status_read_link_down(req);
break;
-
- case FSF_QTCB_SEND_ELS:
- zfcp_fsf_send_els_handler(fsf_req);
+ case FSF_STATUS_READ_LINK_UP:
+ dev_info(&adapter->ccw_device->dev,
+ "The local link has been restored\n");
+ /* All ports should be marked as ready to run again */
+ zfcp_erp_modify_adapter_status(adapter, 30, NULL,
+ ZFCP_STATUS_COMMON_RUNNING,
+ ZFCP_SET);
+ zfcp_erp_adapter_reopen(adapter,
+ ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
+ ZFCP_STATUS_COMMON_ERP_FAILED,
+ 102, req);
break;
-
- case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
- zfcp_fsf_control_file_handler(fsf_req);
+ case FSF_STATUS_READ_NOTIFICATION_LOST:
+ if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
+ zfcp_erp_adapter_access_changed(adapter, 135, req);
+ if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
+ schedule_work(&adapter->scan_work);
break;
-
- case FSF_QTCB_UPLOAD_CONTROL_FILE:
- zfcp_fsf_control_file_handler(fsf_req);
+ case FSF_STATUS_READ_CFDC_UPDATED:
+ zfcp_erp_adapter_access_changed(adapter, 136, req);
+ break;
+ case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
+ adapter->adapter_features = sr_buf->payload.word[0];
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;
+ mempool_free(sr_buf, adapter->pool.data_status_read);
+ zfcp_fsf_req_free(req);
- zfcp_erp_async_handler(erp_action, 0);
-
- return retval;
+ atomic_inc(&adapter->stat_miss);
+ queue_work(zfcp_data.work_queue, &adapter->stat_work);
}
-/*
- * 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)
+static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
{
- 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;
+ switch (req->qtcb->header.fsf_status_qual.word[0]) {
+ case FSF_SQ_FCP_RSP_AVAILABLE:
+ case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
+ case FSF_SQ_NO_RETRY_POSSIBLE:
+ case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
+ return;
+ case FSF_SQ_COMMAND_ABORTED:
+ req->status |= ZFCP_STATUS_FSFREQ_ABORTED;
+ break;
+ case FSF_SQ_NO_RECOM:
+ dev_err(&req->adapter->ccw_device->dev,
+ "The FCP adapter reported a problem "
+ "that cannot be recovered\n");
+ zfcp_erp_adapter_shutdown(req->adapter, 0, 121, req);
+ break;
}
+ /* all non-return stats set FSFREQ_ERROR*/
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+}
- 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;
+static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
+{
+ if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
+ return;
- 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;
+ switch (req->qtcb->header.fsf_status) {
+ case FSF_UNKNOWN_COMMAND:
+ dev_err(&req->adapter->ccw_device->dev,
+ "The FCP adapter does not recognize the command 0x%x\n",
+ req->qtcb->header.fsf_command);
+ zfcp_erp_adapter_shutdown(req->adapter, 0, 120, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ break;
+ case FSF_ADAPTER_STATUS_AVAILABLE:
+ zfcp_fsf_fsfstatus_qual_eval(req);
+ break;
}
- 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);
+static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_qtcb *qtcb = req->qtcb;
+ union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
- /* start QDIO request for this FSF request */
- retval = zfcp_fsf_req_send(fsf_req, NULL);
- if (retval) {
- ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status "
- "environment.\n");
- goto failed_req_send;
+ zfcp_hba_dbf_event_fsf_response(req);
+
+ if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */
+ return;
}
- ZFCP_LOG_TRACE("Status Read request initiated (adapter%s)\n",
- zfcp_get_busid_by_adapter(adapter));
- goto out;
+ switch (qtcb->prefix.prot_status) {
+ case FSF_PROT_GOOD:
+ case FSF_PROT_FSF_STATUS_PRESENTED:
+ return;
+ case FSF_PROT_QTCB_VERSION_ERROR:
+ dev_err(&adapter->ccw_device->dev,
+ "QTCB version 0x%x not supported by FCP adapter "
+ "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
+ psq->word[0], psq->word[1]);
+ zfcp_erp_adapter_shutdown(adapter, 0, 117, req);
+ break;
+ case FSF_PROT_ERROR_STATE:
+ case FSF_PROT_SEQ_NUMB_ERROR:
+ zfcp_erp_adapter_reopen(adapter, 0, 98, req);
+ req->status |= ZFCP_STATUS_FSFREQ_RETRY;
+ break;
+ case FSF_PROT_UNSUPP_QTCB_TYPE:
+ dev_err(&adapter->ccw_device->dev,
+ "The QTCB type is not supported by the FCP adapter\n");
+ zfcp_erp_adapter_shutdown(adapter, 0, 118, req);
+ break;
+ case FSF_PROT_HOST_CONNECTION_INITIALIZING:
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
+ &adapter->status);
+ break;
+ case FSF_PROT_DUPLICATE_REQUEST_ID:
+ dev_err(&adapter->ccw_device->dev,
+ "0x%Lx is an ambiguous request identifier\n",
+ (unsigned long long)qtcb->bottom.support.req_handle);
+ zfcp_erp_adapter_shutdown(adapter, 0, 78, req);
+ break;
+ case FSF_PROT_LINK_DOWN:
+ zfcp_fsf_link_down_info_eval(req, 37, &psq->link_down_info);
+ /* FIXME: reopening adapter now? better wait for link up */
+ zfcp_erp_adapter_reopen(adapter, 0, 79, req);
+ break;
+ case FSF_PROT_REEST_QUEUE:
+ /* All ports should be marked as ready to run again */
+ zfcp_erp_modify_adapter_status(adapter, 28, NULL,
+ ZFCP_STATUS_COMMON_RUNNING,
+ ZFCP_SET);
+ zfcp_erp_adapter_reopen(adapter,
+ ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
+ ZFCP_STATUS_COMMON_ERP_FAILED, 99, req);
+ break;
+ default:
+ dev_err(&adapter->ccw_device->dev,
+ "0x%x is not a valid transfer protocol status\n",
+ qtcb->prefix.prot_status);
+ zfcp_erp_adapter_shutdown(adapter, 0, 119, req);
+ }
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+}
- failed_req_send:
- mempool_free(status_buffer, adapter->pool.data_status_read);
+/**
+ * zfcp_fsf_req_complete - process completion of a FSF request
+ * @fsf_req: The FSF request that has been completed.
+ *
+ * When a request has been completed either from the FCP adapter,
+ * or it has been dismissed due to a queue shutdown, this function
+ * is called to process the completion status and trigger further
+ * events related to the FSF request.
+ */
+void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
+{
+ if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
+ zfcp_fsf_status_read_handler(req);
+ return;
+ }
- 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;
+ del_timer(&req->timer);
+ zfcp_fsf_protstatus_eval(req);
+ zfcp_fsf_fsfstatus_eval(req);
+ req->handler(req);
+
+ if (req->erp_action)
+ zfcp_erp_notify(req->erp_action, 0);
+ req->status |= ZFCP_STATUS_FSFREQ_COMPLETED;
+
+ if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
+ zfcp_fsf_req_free(req);
+ else
+ /* notify initiator waiting for the requests completion */
+ /*
+ * FIXME: Race! We must not access fsf_req here as it might have been
+ * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
+ * flag. It's an improbable case. But, we have the same paranoia for
+ * the cleanup flag already.
+ * Might better be handled using complete()?
+ * (setting the flag and doing wakeup ought to be atomic
+ * with regard to checking the flag as long as waitqueue is
+ * part of the to be released structure)
+ */
+ wake_up(&req->completion_wq);
}
-static int
-zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req)
+static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
{
- struct fsf_status_read_buffer *status_buffer;
- struct zfcp_adapter *adapter;
- struct zfcp_port *port;
- unsigned long flags;
+ struct fsf_qtcb_bottom_config *bottom;
+ struct zfcp_adapter *adapter = req->adapter;
+ struct Scsi_Host *shost = adapter->scsi_host;
- status_buffer = (struct fsf_status_read_buffer *) fsf_req->data;
- adapter = fsf_req->adapter;
+ bottom = &req->qtcb->bottom.config;
- 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 (req->data)
+ memcpy(req->data, bottom, sizeof(*bottom));
- 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%08x on "
- "adapter %s. Ignored.\n",
- status_buffer->d_id & ZFCP_DID_MASK,
- zfcp_get_busid_by_adapter(adapter));
- goto out;
- }
+ 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;
- switch (status_buffer->status_subtype) {
+ adapter->hydra_version = bottom->adapter_type;
+ adapter->timer_ticks = bottom->timer_interval;
- 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;
+ if (fc_host_permanent_port_name(shost) == -1)
+ fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
- case FSF_STATUS_READ_SUB_ERROR_PORT:
- debug_text_event(adapter->erp_dbf, 1, "unsol_pc_err:");
- zfcp_erp_port_shutdown(port, 0);
+ switch (bottom->fc_topology) {
+ case 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;
break;
-
+ case FSF_TOPO_FABRIC:
+ fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
+ break;
+ case FSF_TOPO_AL:
+ fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
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%08x on the adapter %s. "
- "Ignored. (debug info 0x%x)\n",
- status_buffer->d_id,
- zfcp_get_busid_by_adapter(adapter),
- status_buffer->status_subtype);
+ dev_err(&adapter->ccw_device->dev,
+ "Unknown or unsupported arbitrated loop "
+ "fibre channel topology detected\n");
+ zfcp_erp_adapter_shutdown(adapter, 0, 127, req);
+ return -EIO;
}
- 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)
+static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *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;
- }
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_qtcb *qtcb = req->qtcb;
+ struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
+ struct Scsi_Host *shost = adapter->scsi_host;
- zfcp_hba_dbf_event_fsf_unsol("read", adapter, status_buffer);
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ return;
- switch (status_buffer->status_type) {
+ 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;
- case FSF_STATUS_READ_PORT_CLOSED:
- zfcp_fsf_status_read_port_closed(fsf_req);
- break;
+ switch (qtcb->header.fsf_status) {
+ case FSF_GOOD:
+ if (zfcp_fsf_exchange_config_evaluate(req))
+ return;
- case FSF_STATUS_READ_INCOMING_ELS:
- zfcp_fsf_incoming_els(fsf_req);
+ if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
+ dev_err(&adapter->ccw_device->dev,
+ "FCP adapter maximum QTCB size (%d bytes) "
+ "is too small\n",
+ bottom->max_qtcb_size);
+ zfcp_erp_adapter_shutdown(adapter, 0, 129, req);
+ return;
+ }
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
+ &adapter->status);
break;
+ case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
+ 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;
- case FSF_STATUS_READ_SENSE_DATA_AVAIL:
- ZFCP_LOG_INFO("unsolicited sense data received (adapter %s)\n",
- zfcp_get_busid_by_adapter(adapter));
- break;
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
+ &adapter->status);
- 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);
+ zfcp_fsf_link_down_info_eval(req, 42,
+ &qtcb->header.fsf_status_qual.link_down_info);
break;
+ default:
+ zfcp_erp_adapter_shutdown(adapter, 0, 130, req);
+ return;
+ }
- 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;
+ 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));
+ }
- 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;
+ if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
+ dev_err(&adapter->ccw_device->dev,
+ "The FCP adapter only supports newer "
+ "control block versions\n");
+ zfcp_erp_adapter_shutdown(adapter, 0, 125, req);
+ return;
+ }
+ if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
+ dev_err(&adapter->ccw_device->dev,
+ "The FCP adapter only supports older "
+ "control block versions\n");
+ zfcp_erp_adapter_shutdown(adapter, 0, 126, req);
+ }
+}
- 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;
+static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
+ struct Scsi_Host *shost = adapter->scsi_host;
- 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;
+ if (req->data)
+ memcpy(req->data, bottom, sizeof(*bottom));
- 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;
+ 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;
+}
- 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;
+static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
+{
+ struct fsf_qtcb *qtcb = req->qtcb;
- 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));
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ return;
+
+ switch (qtcb->header.fsf_status) {
+ case FSF_GOOD:
+ zfcp_fsf_exchange_port_evaluate(req);
+ break;
+ case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
+ zfcp_fsf_exchange_port_evaluate(req);
+ zfcp_fsf_link_down_info_eval(req, 43,
+ &qtcb->header.fsf_status_qual.link_down_info);
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)
+static int zfcp_fsf_sbal_available(struct zfcp_adapter *adapter)
{
- volatile struct qdio_buffer_element *sbale;
- unsigned long lock_flags;
- struct zfcp_fsf_req *fsf_req = NULL;
- 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 (atomic_read(&adapter->req_q.count) > 0)
+ return 1;
+ atomic_inc(&adapter->qdio_outb_full);
+ return 0;
+}
+
+static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter)
+ __releases(&adapter->req_q_lock)
+ __acquires(&adapter->req_q_lock)
+{
+ struct zfcp_qdio_queue *req_q = &adapter->req_q;
+ long ret;
+
+ if (atomic_read(&req_q->count) <= -REQUEST_LIST_SIZE)
+ return -EIO;
+ if (atomic_read(&req_q->count) > 0)
+ return 0;
+
+ atomic_dec(&req_q->count);
+ spin_unlock_bh(&adapter->req_q_lock);
+ ret = wait_event_interruptible_timeout(adapter->request_wq,
+ atomic_read(&req_q->count) >= 0,
+ 5 * HZ);
+ spin_lock_bh(&adapter->req_q_lock);
+ atomic_inc(&req_q->count);
+
+ if (ret > 0)
+ return 0;
+ if (!ret)
+ atomic_inc(&adapter->qdio_outb_full);
+ return -EIO;
+}
+
+static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool)
+{
+ struct zfcp_fsf_req *req;
+ req = mempool_alloc(pool, GFP_ATOMIC);
+ if (!req)
+ return NULL;
+ memset(req, 0, sizeof(*req));
+ req->pool = pool;
+ return req;
+}
+
+static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool)
+{
+ struct zfcp_fsf_req_qtcb *qtcb;
+
+ if (likely(pool))
+ qtcb = mempool_alloc(pool, GFP_ATOMIC);
+ else
+ qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache,
+ GFP_ATOMIC);
+ if (unlikely(!qtcb))
+ return NULL;
+
+ memset(qtcb, 0, sizeof(*qtcb));
+ qtcb->fsf_req.qtcb = &qtcb->qtcb;
+ qtcb->fsf_req.pool = pool;
+
+ return &qtcb->fsf_req;
+}
+
+static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
+ u32 fsf_cmd, int req_flags,
+ mempool_t *pool)
+{
+ struct qdio_buffer_element *sbale;
+
+ struct zfcp_fsf_req *req;
+ struct zfcp_qdio_queue *req_q = &adapter->req_q;
+
+ if (req_flags & ZFCP_REQ_NO_QTCB)
+ req = zfcp_fsf_alloc_noqtcb(pool);
+ else
+ req = zfcp_fsf_alloc_qtcb(pool);
+
+ if (unlikely(!req))
+ return ERR_PTR(-EIO);
+
+ if (adapter->req_no == 0)
+ adapter->req_no++;
+
+ INIT_LIST_HEAD(&req->list);
+ init_timer(&req->timer);
+ init_waitqueue_head(&req->completion_wq);
+
+ req->adapter = adapter;
+ req->fsf_command = fsf_cmd;
+ req->req_id = adapter->req_no++;
+ req->sbal_number = 1;
+ req->sbal_first = req_q->first;
+ req->sbal_last = req_q->first;
+ req->sbale_curr = 1;
+
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].addr = (void *) req->req_id;
+ sbale[0].flags |= SBAL_FLAGS0_COMMAND;
+
+ if (likely(req->qtcb)) {
+ req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no;
+ req->qtcb->prefix.req_id = req->req_id;
+ req->qtcb->prefix.ulp_info = 26;
+ req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
+ req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
+ req->qtcb->header.req_handle = req->req_id;
+ req->qtcb->header.fsf_command = req->fsf_command;
+ req->seq_no = adapter->fsf_req_seq_no;
+ req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
+ sbale[1].addr = (void *) req->qtcb;
+ sbale[1].length = sizeof(struct fsf_qtcb);
}
- 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;
+ if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) {
+ zfcp_fsf_req_free(req);
+ return ERR_PTR(-EIO);
+ }
- fsf_req->data = (unsigned long) unit;
+ if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP))
+ req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- /* 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;
+ return req;
+}
- /* set handle of request which should be aborted */
- fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id;
+static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
+{
+ struct zfcp_adapter *adapter = req->adapter;
+ unsigned long flags;
+ int idx;
- /* start QDIO request for this FSF request */
+ /* put allocated FSF request into hash table */
+ spin_lock_irqsave(&adapter->req_list_lock, flags);
+ idx = zfcp_reqlist_hash(req->req_id);
+ list_add_tail(&req->list, &adapter->req_list[idx]);
+ spin_unlock_irqrestore(&adapter->req_list_lock, flags);
- zfcp_fsf_start_scsi_er_timer(adapter);
- retval = zfcp_fsf_req_send(fsf_req, NULL);
- if (retval) {
- del_timer(&adapter->scsi_er_timer);
- ZFCP_LOG_INFO("error: Failed to send abort command request "
- "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n",
- zfcp_get_busid_by_adapter(adapter),
- unit->port->wwpn, unit->fcp_lun);
- zfcp_fsf_req_free(fsf_req);
- fsf_req = NULL;
- goto out;
+ req->qdio_outb_usage = atomic_read(&adapter->req_q.count);
+ req->issued = get_clock();
+ if (zfcp_qdio_send(req)) {
+ del_timer(&req->timer);
+ spin_lock_irqsave(&adapter->req_list_lock, flags);
+ /* lookup request again, list might have changed */
+ if (zfcp_reqlist_find_safe(adapter, req))
+ zfcp_reqlist_remove(adapter, req);
+ spin_unlock_irqrestore(&adapter->req_list_lock, flags);
+ zfcp_erp_adapter_reopen(adapter, 0, 116, req);
+ return -EIO;
}
- ZFCP_LOG_DEBUG("Abort FCP Command request initiated "
- "(adapter%s, port d_id=0x%08x, "
- "unit x%016Lx, old_req_id=0x%lx)\n",
- zfcp_get_busid_by_adapter(adapter),
- unit->port->d_id,
- unit->fcp_lun, old_req_id);
- out:
- write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
- return fsf_req;
+ /* Don't increase for unsolicited status */
+ if (req->qtcb)
+ adapter->fsf_req_seq_no++;
+
+ return 0;
}
-/*
- * function: zfcp_fsf_abort_fcp_command_handler
- *
- * purpose: is called for finished Abort FCP Command request
- *
- * returns:
+/**
+ * zfcp_fsf_status_read - send status read request
+ * @adapter: pointer to struct zfcp_adapter
+ * @req_flags: request flags
+ * Returns: 0 on success, ERROR otherwise
*/
-static int
-zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req)
+int zfcp_fsf_status_read(struct zfcp_adapter *adapter)
{
- int retval = -EINVAL;
- struct zfcp_unit *unit;
- unsigned char status_qual =
- new_fsf_req->qtcb->header.fsf_status_qual.word[0];
+ struct zfcp_fsf_req *req;
+ struct fsf_status_read_buffer *sr_buf;
+ struct qdio_buffer_element *sbale;
+ int retval = -EIO;
- del_timer(&new_fsf_req->adapter->scsi_er_timer);
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
- if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
- /* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */
- goto skip_fsfstatus;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS,
+ ZFCP_REQ_NO_QTCB,
+ adapter->pool.fsf_req_status_read);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
+ goto out;
}
- unit = (struct zfcp_unit *) new_fsf_req->data;
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS;
+ sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
+ req->sbale_curr = 2;
- /* evaluate FSF status in QTCB */
- switch (new_fsf_req->qtcb->header.fsf_status) {
+ sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC);
+ if (!sr_buf) {
+ retval = -ENOMEM;
+ goto failed_buf;
+ }
+ memset(sr_buf, 0, sizeof(*sr_buf));
+ req->data = sr_buf;
+ sbale = zfcp_qdio_sbale_curr(req);
+ sbale->addr = (void *) sr_buf;
+ sbale->length = sizeof(*sr_buf);
+ retval = zfcp_fsf_req_send(req);
+ if (retval)
+ goto failed_req_send;
+
+ goto out;
+
+failed_req_send:
+ mempool_free(sr_buf, adapter->pool.data_status_read);
+failed_buf:
+ zfcp_fsf_req_free(req);
+ zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL);
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
+ return retval;
+}
+
+static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
+{
+ struct zfcp_unit *unit = req->data;
+ union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
+
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ return;
+
+ switch (req->qtcb->header.fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID:
- if (status_qual >> 4 != status_qual % 0xf) {
- 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;
+ if (fsq->word[0] == fsq->word[1]) {
+ zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104,
+ req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
break;
-
case FSF_LUN_HANDLE_NOT_VALID:
- if (status_qual >> 4 != status_qual % 0xf) {
- /* 2 */
- 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;
+ if (fsq->word[0] == fsq->word[1]) {
+ zfcp_erp_port_reopen(unit->port, 0, 105, req);
+ 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;
+ 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;
+ zfcp_erp_port_boxed(unit->port, 47, req);
+ 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;
+ zfcp_erp_unit_boxed(unit, 48, req);
+ 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]) {
+ switch (fsq->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));
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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));
+ req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
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.
+ * zfcp_fsf_abort_fcp_command - abort running SCSI command
+ * @old_req_id: unsigned long
+ * @adapter: pointer to struct zfcp_adapter
+ * @unit: pointer to struct zfcp_unit
+ * @req_flags: integer specifying the request flags
+ * Returns: pointer to struct zfcp_fsf_req
+ *
+ * FIXME(design): should be watched by a timeout !!!
*/
-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)
+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_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;
- }
+ struct qdio_buffer_element *sbale;
+ struct zfcp_fsf_req *req = NULL;
- if (erp_action != NULL) {
- erp_action->fsf_req = fsf_req;
- fsf_req->erp_action = erp_action;
- }
-
- 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);
-
- /* start QDIO request for this FSF request */
- ret = zfcp_fsf_req_send(fsf_req, ct->timer);
- 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;
+ spin_lock(&adapter->req_q_lock);
+ if (!zfcp_fsf_sbal_available(adapter))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND,
+ req_flags, adapter->pool.fsf_req_abort);
+ if (IS_ERR(req)) {
+ req = NULL;
+ goto out;
}
- ZFCP_LOG_DEBUG("CT request initiated (adapter %s, port 0x%016Lx)\n",
- zfcp_get_busid_by_adapter(adapter), port->wwpn);
- goto out;
+ if (unlikely(!(atomic_read(&unit->status) &
+ ZFCP_STATUS_COMMON_UNBLOCKED)))
+ goto out_error_free;
- 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;
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+
+ req->data = unit;
+ req->handler = zfcp_fsf_abort_fcp_command_handler;
+ req->qtcb->header.lun_handle = unit->handle;
+ req->qtcb->header.port_handle = unit->port->handle;
+ req->qtcb->bottom.support.req_handle = (u64) old_req_id;
+
+ zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
+ if (!zfcp_fsf_req_send(req))
+ goto out;
+
+out_error_free:
+ zfcp_fsf_req_free(req);
+ req = NULL;
+out:
+ spin_unlock(&adapter->req_q_lock);
+ return req;
}
-/**
- * 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)
+static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *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;
+ struct zfcp_adapter *adapter = req->adapter;
+ struct zfcp_send_ct *send_ct = req->data;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
- 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;
+ send_ct->status = -EINVAL;
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ if (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;
+ zfcp_san_dbf_event_ct_response(req);
+ send_ct->status = 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;
+ zfcp_fsf_class_not_supp(req);
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]);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
break;
-
case FSF_ACCESS_DENIED:
- ZFCP_LOG_NORMAL("access denied, cannot send generic service "
- "command (adapter %s, port d_id=0x%08x)\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%08x)\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%08x)\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;
+ 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_PORT_HANDLE_NOT_VALID:
+ zfcp_erp_adapter_reopen(adapter, 0, 106, req);
+ case FSF_GENERIC_COMMAND_REJECTED:
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));
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
skip_fsfstatus:
- send_ct->status = retval;
-
- if (send_ct->handler != NULL)
+ if (send_ct->handler)
send_ct->handler(send_ct->handler_data);
+}
- return retval;
+static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
+ struct scatterlist *sg_req,
+ struct scatterlist *sg_resp,
+ int max_sbals)
+{
+ struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(req);
+ u32 feat = req->adapter->adapter_features;
+ int bytes;
+
+ if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
+ if (sg_req->length > PAGE_SIZE || sg_resp->length > PAGE_SIZE ||
+ !sg_is_last(sg_req) || !sg_is_last(sg_resp))
+ return -EOPNOTSUPP;
+
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
+ sbale[2].addr = sg_virt(sg_req);
+ sbale[2].length = sg_req->length;
+ sbale[3].addr = sg_virt(sg_resp);
+ sbale[3].length = sg_resp->length;
+ sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
+ return 0;
+ }
+
+ bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ,
+ sg_req, max_sbals);
+ if (bytes <= 0)
+ return -ENOMEM;
+ req->qtcb->bottom.support.req_buf_length = bytes;
+ req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
+
+ bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ,
+ sg_resp, max_sbals);
+ if (bytes <= 0)
+ return -ENOMEM;
+ req->qtcb->bottom.support.resp_buf_length = bytes;
+
+ return 0;
}
/**
- * 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.
+ * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
+ * @ct: pointer to struct zfcp_send_ct with data for request
+ * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
+ * @erp_action: if non-null the Generic Service request sent within ERP
*/
-int
-zfcp_fsf_send_els(struct zfcp_send_els *els)
+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_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%08x)\n",
- zfcp_get_busid_by_adapter(adapter), d_id);
- goto failed_req;
+ struct zfcp_wka_port *wka_port = ct->wka_port;
+ struct zfcp_adapter *adapter = wka_port->adapter;
+ struct zfcp_fsf_req *req;
+ int ret = -EIO;
+
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC,
+ ZFCP_REQ_AUTO_CLEANUP, pool);
+ if (IS_ERR(req)) {
+ ret = PTR_ERR(req);
+ goto out;
}
- 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%08x)\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%08x)\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%08x)\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);
-
- /* start QDIO request for this FSF request */
- ret = zfcp_fsf_req_send(fsf_req, els->timer);
- if (ret) {
- ZFCP_LOG_DEBUG("error: initiation of ELS request failed "
- "(adapter %s, port d_id: 0x%08x)\n",
- zfcp_get_busid_by_adapter(adapter), d_id);
+ ret = zfcp_fsf_setup_ct_els_sbals(req, ct->req, ct->resp,
+ FSF_MAX_SBALS_PER_REQ);
+ if (ret)
goto failed_send;
- }
- ZFCP_LOG_DEBUG("ELS request initiated (adapter %s, port d_id: "
- "0x%08x)\n", zfcp_get_busid_by_adapter(adapter), d_id);
- goto out;
+ req->handler = zfcp_fsf_send_ct_handler;
+ req->qtcb->header.port_handle = wka_port->handle;
+ req->qtcb->bottom.support.service_class = FSF_CLASS_3;
+ req->qtcb->bottom.support.timeout = ct->timeout;
+ req->data = ct;
+
+ zfcp_san_dbf_event_ct_request(req);
+
+ if (erp_action) {
+ erp_action->fsf_req = req;
+ req->erp_action = erp_action;
+ zfcp_fsf_start_erp_timer(req);
+ } else
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
- failed_send:
- zfcp_fsf_req_free(fsf_req);
+ ret = zfcp_fsf_req_send(req);
+ if (ret)
+ goto failed_send;
- failed_req:
- out:
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
+ goto out;
- return ret;
+failed_send:
+ zfcp_fsf_req_free(req);
+ if (erp_action)
+ erp_action->fsf_req = NULL;
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
+ 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)
+static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *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;
+ struct zfcp_send_els *send_els = req->data;
+ struct zfcp_port *port = send_els->port;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
- 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;
+ send_els->status = -EINVAL;
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ if (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;
+ zfcp_san_dbf_event_els_response(req);
+ send_els->status = 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;
+ zfcp_fsf_class_not_supp(req);
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;
+ /*fall through */
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;
+ 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%08x)\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%08x)\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 != 0)
- 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;
- unsigned long lock_flags;
- int retval = 0;
-
- /* setup new FSF request */
- retval = zfcp_fsf_req_create(erp_action->adapter,
- FSF_QTCB_EXCHANGE_CONFIG_DATA,
- ZFCP_REQ_AUTO_CLEANUP,
- erp_action->adapter->pool.fsf_req_erp,
- &lock_flags, &(erp_action->fsf_req));
- if (retval < 0) {
- ZFCP_LOG_INFO("error: Could not create exchange configuration "
- "data request for adapter %s.\n",
- zfcp_get_busid_by_adapter(erp_action->adapter));
- goto out;
- }
-
- sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
- erp_action->fsf_req->sbal_curr, 0);
- sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
- sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
-
- erp_action->fsf_req->erp_action = erp_action;
- erp_action->fsf_req->qtcb->bottom.config.feature_selection =
- FSF_FEATURE_CFDC |
- FSF_FEATURE_LUN_SHARING |
- FSF_FEATURE_NOTIFICATION_LOST |
- FSF_FEATURE_UPDATE_ALERT;
-
- /* start QDIO request for this FSF request */
- retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
- if (retval) {
- ZFCP_LOG_INFO
- ("error: Could not send exchange configuration data "
- "command on the adapter %s\n",
- zfcp_get_busid_by_adapter(erp_action->adapter));
- zfcp_fsf_req_free(erp_action->fsf_req);
- erp_action->fsf_req = NULL;
- goto out;
- }
-
- ZFCP_LOG_DEBUG("exchange configuration data request initiated "
- "(adapter %s)\n",
- zfcp_get_busid_by_adapter(erp_action->adapter));
-
- out:
- write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
- lock_flags);
- 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) {
- 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%08x,\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);
+ zfcp_fsf_access_denied_port(req, port);
break;
+ case FSF_SBAL_MISMATCH:
+ /* should never occure, avoided in zfcp_fsf_send_els */
+ /* fall through */
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;
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ break;
}
- return 0;
+skip_fsfstatus:
+ if (send_els->handler)
+ send_els->handler(send_els->handler_data);
}
/**
- * zfcp_fsf_exchange_port_data - request information about local port
- * @erp_action: ERP action for the adapter for which port data is requested
- * @adapter: for which port data is requested
- * @data: response to exchange port data request
+ * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
+ * @els: pointer to struct zfcp_send_els with data for the command
*/
-int
-zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action,
- struct zfcp_adapter *adapter,
- struct fsf_qtcb_bottom_port *data)
+int zfcp_fsf_send_els(struct zfcp_send_els *els)
{
- volatile struct qdio_buffer_element *sbale;
- int retval = 0;
- unsigned long lock_flags;
- struct zfcp_fsf_req *fsf_req;
- struct timer_list *timer;
-
- 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,
- erp_action ? ZFCP_REQ_AUTO_CLEANUP : 0,
- NULL, &lock_flags, &fsf_req);
- if (retval < 0) {
- 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;
+ struct zfcp_fsf_req *req;
+ struct zfcp_adapter *adapter = els->adapter;
+ struct fsf_qtcb_bottom_support *bottom;
+ int ret = -EIO;
+
+ if (unlikely(!(atomic_read(&els->port->status) &
+ ZFCP_STATUS_COMMON_UNBLOCKED)))
+ return -EBUSY;
+
+ spin_lock(&adapter->req_q_lock);
+ if (!zfcp_fsf_sbal_available(adapter))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS,
+ ZFCP_REQ_AUTO_CLEANUP, NULL);
+ if (IS_ERR(req)) {
+ ret = PTR_ERR(req);
+ goto out;
}
- if (data)
- fsf_req->data = (unsigned long) data;
+ ret = zfcp_fsf_setup_ct_els_sbals(req, els->req, els->resp, 2);
- 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;
+ if (ret)
+ goto failed_send;
- if (erp_action) {
- erp_action->fsf_req = fsf_req;
- fsf_req->erp_action = erp_action;
- timer = &erp_action->timer;
- } else {
- timer = kmalloc(sizeof(struct timer_list), GFP_ATOMIC);
- if (!timer) {
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
- zfcp_fsf_req_free(fsf_req);
- return -ENOMEM;
- }
- init_timer(timer);
- timer->function = zfcp_fsf_request_timeout_handler;
- timer->data = (unsigned long) adapter;
- timer->expires = ZFCP_FSF_REQUEST_TIMEOUT;
- }
+ bottom = &req->qtcb->bottom.support;
+ req->handler = zfcp_fsf_send_els_handler;
+ bottom->d_id = els->d_id;
+ bottom->service_class = FSF_CLASS_3;
+ bottom->timeout = 2 * R_A_TOV;
+ req->data = els;
- retval = zfcp_fsf_req_send(fsf_req, timer);
- 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);
- if (erp_action)
- erp_action->fsf_req = NULL;
- else
- kfree(timer);
- write_unlock_irqrestore(&adapter->request_queue.queue_lock,
- lock_flags);
- return retval;
+ zfcp_san_dbf_event_els_request(req);
+
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
+ ret = zfcp_fsf_req_send(req);
+ if (ret)
+ goto failed_send;
+
+ goto out;
+
+failed_send:
+ zfcp_fsf_req_free(req);
+out:
+ spin_unlock(&adapter->req_q_lock);
+ return ret;
+}
+
+int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
+{
+ struct qdio_buffer_element *sbale;
+ struct zfcp_fsf_req *req;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ int retval = -EIO;
+
+ spin_lock_bh(&adapter->req_q_lock);
+ if (!zfcp_fsf_sbal_available(adapter))
+ goto out;
+ req = zfcp_fsf_req_create(adapter,
+ FSF_QTCB_EXCHANGE_CONFIG_DATA,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
+ goto out;
}
- write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+
+ req->qtcb->bottom.config.feature_selection =
+ FSF_FEATURE_CFDC |
+ FSF_FEATURE_LUN_SHARING |
+ FSF_FEATURE_NOTIFICATION_LOST |
+ FSF_FEATURE_UPDATE_ALERT;
+ req->erp_action = erp_action;
+ req->handler = zfcp_fsf_exchange_config_data_handler;
+ erp_action->fsf_req = req;
- if (!erp_action) {
- wait_event(fsf_req->completion_wq,
- fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
- del_timer_sync(timer);
- zfcp_fsf_req_free(fsf_req);
- kfree(timer);
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(req);
+ if (retval) {
+ zfcp_fsf_req_free(req);
+ erp_action->fsf_req = NULL;
}
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
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)
+int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
+ struct fsf_qtcb_bottom_config *data)
{
- struct zfcp_adapter *adapter;
- struct fsf_qtcb *qtcb;
- struct fsf_qtcb_bottom_port *bottom, *data;
- struct Scsi_Host *shost;
+ struct qdio_buffer_element *sbale;
+ struct zfcp_fsf_req *req = NULL;
+ int retval = -EIO;
+
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
- adapter = fsf_req->adapter;
- qtcb = fsf_req->qtcb;
- bottom = &qtcb->bottom.port;
- shost = adapter->scsi_host;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA,
+ 0, NULL);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
+ goto out;
+ }
+
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+ req->handler = zfcp_fsf_exchange_config_data_handler;
+
+ req->qtcb->bottom.config.feature_selection =
+ FSF_FEATURE_CFDC |
+ FSF_FEATURE_LUN_SHARING |
+ FSF_FEATURE_NOTIFICATION_LOST |
+ FSF_FEATURE_UPDATE_ALERT;
- data = (struct fsf_qtcb_bottom_port*) fsf_req->data;
if (data)
- memcpy(data, bottom, sizeof(struct fsf_qtcb_bottom_port));
+ req->data = data;
- 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_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
+ retval = zfcp_fsf_req_send(req);
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
+ if (!retval)
+ wait_event(req->completion_wq,
+ req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
+
+ zfcp_fsf_req_free(req);
+
+ return retval;
}
/**
- * zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request
- * @fsf_req: pointer to struct zfcp_fsf_req
+ * zfcp_fsf_exchange_port_data - request information about local port
+ * @erp_action: ERP action for the adapter for which port data is requested
+ * Returns: 0 on success, error otherwise
*/
-static void
-zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *fsf_req)
+int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
{
- struct zfcp_adapter *adapter;
- struct fsf_qtcb *qtcb;
+ struct qdio_buffer_element *sbale;
+ struct zfcp_fsf_req *req;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ int retval = -EIO;
- adapter = fsf_req->adapter;
- qtcb = fsf_req->qtcb;
+ if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
+ return -EOPNOTSUPP;
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
- return;
+ spin_lock_bh(&adapter->req_q_lock);
+ if (!zfcp_fsf_sbal_available(adapter))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
+ goto out;
+ }
- 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));
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+
+ req->handler = zfcp_fsf_exchange_port_data_handler;
+ req->erp_action = erp_action;
+ erp_action->fsf_req = req;
+
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(req);
+ if (retval) {
+ zfcp_fsf_req_free(req);
+ erp_action->fsf_req = NULL;
}
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
+ return retval;
}
-
-/*
- * function: zfcp_fsf_open_port
- *
- * purpose:
- *
- * returns: address of initiated FSF request
- * NULL - request could not be initiated
+/**
+ * zfcp_fsf_exchange_port_data_sync - request information about local port
+ * @adapter: pointer to struct zfcp_adapter
+ * @data: pointer to struct fsf_qtcb_bottom_port
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
+ struct fsf_qtcb_bottom_port *data)
{
- volatile struct qdio_buffer_element *sbale;
- 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, &(erp_action->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;
- }
+ struct qdio_buffer_element *sbale;
+ struct zfcp_fsf_req *req = NULL;
+ int retval = -EIO;
- sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
- erp_action->fsf_req->sbal_curr, 0);
- sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
- sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+ if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
+ return -EOPNOTSUPP;
- erp_action->fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id;
- atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status);
- erp_action->fsf_req->data = (unsigned long) erp_action->port;
- erp_action->fsf_req->erp_action = erp_action;
+ spin_lock_bh(&adapter->req_q_lock);
+ if (!zfcp_fsf_sbal_available(adapter))
+ goto out;
- /* start QDIO request for this FSF request */
- retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
- 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(erp_action->fsf_req);
- erp_action->fsf_req = NULL;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0,
+ NULL);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
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);
+ if (data)
+ req->data = data;
+
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+
+ req->handler = zfcp_fsf_exchange_port_data_handler;
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
+ retval = zfcp_fsf_req_send(req);
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
+ if (!retval)
+ wait_event(req->completion_wq,
+ req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
+ zfcp_fsf_req_free(req);
+
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)
+static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
{
- int retval = -EINVAL;
- struct zfcp_port *port;
+ struct zfcp_port *port = req->data;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
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;
- }
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ return;
- /* 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;
+ zfcp_fsf_access_denied_port(req, port);
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;
+ dev_warn(&req->adapter->ccw_device->dev,
+ "Not enough FCP adapter resources to open "
+ "remote port 0x%016Lx\n",
+ (unsigned long long)port->wwpn);
+ zfcp_erp_port_failed(port, 31, req);
+ 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));
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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
* 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);
- }
+ plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els;
+ if (req->qtcb->bottom.support.els1_length >=
+ FSF_PLOGI_MIN_LEN) {
+ if (plogi->serv_param.wwpn != port->wwpn)
+ port->d_id = 0;
+ else {
+ port->wwnn = plogi->serv_param.wwnn;
+ zfcp_fc_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));
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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
+/**
+ * zfcp_fsf_open_port - create and send open port request
+ * @erp_action: pointer to struct zfcp_erp_action
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
{
- volatile struct qdio_buffer_element *sbale;
- 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, &(erp_action->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));
+ struct qdio_buffer_element *sbale;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
+
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter,
+ FSF_QTCB_OPEN_PORT_WITH_DID,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
goto out;
}
- sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
- erp_action->fsf_req->sbal_curr, 0);
+ sbale = zfcp_qdio_sbale_req(req);
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);
- erp_action->fsf_req->data = (unsigned long) erp_action->port;
- erp_action->fsf_req->erp_action = erp_action;
- erp_action->fsf_req->qtcb->header.port_handle =
- erp_action->port->handle;
+ req->handler = zfcp_fsf_open_port_handler;
+ req->qtcb->bottom.support.d_id = erp_action->port->d_id;
+ req->data = erp_action->port;
+ req->erp_action = erp_action;
+ erp_action->fsf_req = req;
- /* start QDIO request for this FSF request */
- retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(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(erp_action->fsf_req);
+ zfcp_fsf_req_free(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);
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
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)
+static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *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;
- }
+ struct zfcp_port *port = req->data;
- /* evaluate FSF status in QTCB */
- switch (fsf_req->qtcb->header.fsf_status) {
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ return;
+ switch (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;
+ zfcp_erp_adapter_reopen(port->adapter, 0, 107, req);
+ 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_erp_modify_port_status(port, 33, req,
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
+/**
+ * zfcp_fsf_close_port - create and send close port request
+ * @erp_action: pointer to struct zfcp_erp_action
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
{
- int retval = 0;
- unsigned long lock_flags;
- volatile struct qdio_buffer_element *sbale;
-
- /* 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, &erp_action->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);
+ struct qdio_buffer_element *sbale;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
+
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
goto out;
}
- sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
- erp_action->fsf_req->sbal_curr, 0);
+ sbale = zfcp_qdio_sbale_req(req);
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 */
- erp_action->fsf_req->data = (unsigned long) erp_action->port;
- /* port to be closed */
- erp_action->fsf_req->qtcb->header.port_handle =
- erp_action->port->handle;
- erp_action->fsf_req->erp_action = erp_action;
-
- /* start QDIO request for this FSF request */
- retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
+ req->handler = zfcp_fsf_close_port_handler;
+ req->data = erp_action->port;
+ req->erp_action = erp_action;
+ req->qtcb->header.port_handle = erp_action->port->handle;
+ erp_action->fsf_req = req;
+
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(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(erp_action->fsf_req);
+ zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL;
+ }
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
+ return retval;
+}
+
+static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
+{
+ struct zfcp_wka_port *wka_port = req->data;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
+
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
+ wka_port->status = ZFCP_WKA_PORT_OFFLINE;
+ goto out;
+ }
+
+ switch (header->fsf_status) {
+ case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
+ dev_warn(&req->adapter->ccw_device->dev,
+ "Opening WKA port 0x%x failed\n", wka_port->d_id);
+ case FSF_ADAPTER_STATUS_AVAILABLE:
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ case FSF_ACCESS_DENIED:
+ wka_port->status = ZFCP_WKA_PORT_OFFLINE;
+ break;
+ case FSF_PORT_ALREADY_OPEN:
+ break;
+ case FSF_GOOD:
+ wka_port->handle = header->port_handle;
+ wka_port->status = ZFCP_WKA_PORT_ONLINE;
+ }
+out:
+ wake_up(&wka_port->completion_wq);
+}
+
+/**
+ * zfcp_fsf_open_wka_port - create and send open wka-port request
+ * @wka_port: pointer to struct zfcp_wka_port
+ * Returns: 0 on success, error otherwise
+ */
+int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port)
+{
+ struct qdio_buffer_element *sbale;
+ struct zfcp_adapter *adapter = wka_port->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
+
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter,
+ FSF_QTCB_OPEN_PORT_WITH_DID,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
goto out;
}
- 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);
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+
+ req->handler = zfcp_fsf_open_wka_port_handler;
+ req->qtcb->bottom.support.d_id = wka_port->d_id;
+ req->data = wka_port;
+
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
+ retval = zfcp_fsf_req_send(req);
+ if (retval)
+ zfcp_fsf_req_free(req);
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
return retval;
}
-/*
- * function: zfcp_fsf_close_physical_port_handler
- *
- * purpose: is called for finished Close Physical Port FSF command
- *
- * returns:
+static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
+{
+ struct zfcp_wka_port *wka_port = req->data;
+
+ if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_erp_adapter_reopen(wka_port->adapter, 0, 84, req);
+ }
+
+ wka_port->status = ZFCP_WKA_PORT_OFFLINE;
+ wake_up(&wka_port->completion_wq);
+}
+
+/**
+ * zfcp_fsf_close_wka_port - create and send close wka port request
+ * @erp_action: pointer to struct zfcp_erp_action
+ * Returns: 0 on success, error otherwise
*/
-static int
-zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req)
+int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port)
{
- int retval = -EINVAL;
- struct zfcp_port *port;
- struct zfcp_unit *unit;
- struct fsf_qtcb_header *header;
- u16 subtable, rule, counter;
+ struct qdio_buffer_element *sbale;
+ struct zfcp_adapter *adapter = wka_port->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
- port = (struct zfcp_port *) fsf_req->data;
- header = &fsf_req->qtcb->header;
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
- /* don't change port status in our bookkeeping */
- goto skip_fsfstatus;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (unlikely(IS_ERR(req))) {
+ retval = PTR_ERR(req);
+ goto out;
}
- /* evaluate FSF status in QTCB */
- switch (header->fsf_status) {
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+
+ req->handler = zfcp_fsf_close_wka_port_handler;
+ req->data = wka_port;
+ req->qtcb->header.port_handle = wka_port->handle;
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
+ retval = zfcp_fsf_req_send(req);
+ if (retval)
+ zfcp_fsf_req_free(req);
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
+ return retval;
+}
+
+static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
+{
+ struct zfcp_port *port = req->data;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
+ struct zfcp_unit *unit;
+
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ goto skip_fsfstatus;
+
+ 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;
+ zfcp_erp_adapter_reopen(port->adapter, 0, 108, req);
+ 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;
+ zfcp_fsf_access_denied_port(req, port);
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;
+ zfcp_erp_port_boxed(port, 50, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY;
+ /* 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);
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;
+ /* fall through */
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));
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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));
+ atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
+ &unit->status);
break;
}
-
- skip_fsfstatus:
+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
+
+/**
+ * zfcp_fsf_close_physical_port - close physical port
+ * @erp_action: pointer to struct zfcp_erp_action
+ * Returns: 0 on success
*/
-int
-zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
{
- volatile struct qdio_buffer_element *sbale;
- 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, &(erp_action->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));
+ struct qdio_buffer_element *sbale;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
+
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
goto out;
}
- sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
- erp_action->fsf_req->sbal_curr, 0);
- sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
- sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
+
+ req->data = erp_action->port;
+ req->qtcb->header.port_handle = erp_action->port->handle;
+ req->erp_action = erp_action;
+ req->handler = zfcp_fsf_close_physical_port_handler;
+ erp_action->fsf_req = req;
+ atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING,
+ &erp_action->port->status);
- erp_action->fsf_req->qtcb->header.port_handle =
- erp_action->port->handle;
- erp_action->fsf_req->qtcb->bottom.support.fcp_lun =
- erp_action->unit->fcp_lun;
- if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE))
- erp_action->fsf_req->qtcb->bottom.support.option =
- FSF_OPEN_LUN_SUPPRESS_BOXING;
- atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status);
- erp_action->fsf_req->data = (unsigned long) erp_action->unit;
- erp_action->fsf_req->erp_action = erp_action;
-
- /* start QDIO request for this FSF request */
- retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(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(erp_action->fsf_req);
+ zfcp_fsf_req_free(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);
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
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)
+static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *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;
+ struct zfcp_adapter *adapter = req->adapter;
+ struct zfcp_unit *unit = req->data;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
+ struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
+ struct fsf_queue_designator *queue_designator =
+ &header->fsf_status_qual.fsf_queue_designator;
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;
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ return;
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;
-
+ zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, req);
+ /* fall through */
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);
+ zfcp_fsf_access_denied_unit(req, 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;
+ atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
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;
+ zfcp_erp_port_boxed(unit->port, 51, req);
+ 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);
+ if (header->fsf_status_qual.word[0])
+ dev_warn(&adapter->ccw_device->dev,
+ "LUN 0x%Lx on port 0x%Lx is already in "
+ "use by CSS%d, MIF Image ID %x\n",
+ (unsigned long long)unit->fcp_lun,
+ (unsigned long long)unit->port->wwpn,
+ queue_designator->cssid,
+ queue_designator->hla);
+ else
+ zfcp_act_eval_err(adapter,
+ header->fsf_status_qual.word[2]);
+ zfcp_erp_unit_access_denied(unit, 60, req);
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;
+ 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;
+ dev_warn(&adapter->ccw_device->dev,
+ "No handle is available for LUN "
+ "0x%016Lx on port 0x%016Lx\n",
+ (unsigned long long)unit->fcp_lun,
+ (unsigned long long)unit->port->wwpn);
+ zfcp_erp_unit_failed(unit, 34, req);
+ /* fall through */
+ case FSF_INVALID_COMMAND_OPTION:
+ 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;
+ /* fall through */
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;
+ 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) &&
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);
+ dev_info(&adapter->ccw_device->dev,
+ "SCSI device at LUN 0x%016Lx on port "
+ "0x%016Lx opened read-only\n",
+ (unsigned long long)unit->fcp_lun,
+ (unsigned long long)unit->port->wwpn);
}
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);
+ dev_err(&adapter->ccw_device->dev,
+ "Exclusive read-only access not "
+ "supported (unit 0x%016Lx, "
+ "port 0x%016Lx)\n",
+ (unsigned long long)unit->fcp_lun,
+ (unsigned long long)unit->port->wwpn);
+ zfcp_erp_unit_failed(unit, 35, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_erp_unit_shutdown(unit, 0, 80, req);
} 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);
+ dev_err(&adapter->ccw_device->dev,
+ "Shared read-write access not "
+ "supported (unit 0x%016Lx, port "
+ "0x%016Lx)\n",
+ (unsigned long long)unit->fcp_lun,
+ (unsigned long long)unit->port->wwpn);
+ zfcp_erp_unit_failed(unit, 36, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+ zfcp_erp_unit_shutdown(unit, 0, 81, req);
}
}
-
- 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
+/**
+ * zfcp_fsf_open_unit - open unit
+ * @erp_action: pointer to struct zfcp_erp_action
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
+int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
{
- volatile struct qdio_buffer_element *sbale;
- 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, &(erp_action->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));
+ struct qdio_buffer_element *sbale;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
+
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
goto out;
}
- sbale = zfcp_qdio_sbale_req(erp_action->fsf_req,
- erp_action->fsf_req->sbal_curr, 0);
+ sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- erp_action->fsf_req->qtcb->header.port_handle =
- erp_action->port->handle;
- erp_action->fsf_req->qtcb->header.lun_handle = erp_action->unit->handle;
- atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status);
- erp_action->fsf_req->data = (unsigned long) erp_action->unit;
- erp_action->fsf_req->erp_action = erp_action;
+ req->qtcb->header.port_handle = erp_action->port->handle;
+ req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
+ req->handler = zfcp_fsf_open_unit_handler;
+ req->data = erp_action->unit;
+ req->erp_action = erp_action;
+ erp_action->fsf_req = req;
+
+ if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
+ req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
- /* start QDIO request for this FSF request */
- retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer);
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(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(erp_action->fsf_req);
+ zfcp_fsf_req_free(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);
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
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)
+static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *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;
- }
+ struct zfcp_unit *unit = req->data;
- /* evaluate FSF status in QTCB */
- switch (fsf_req->qtcb->header.fsf_status) {
+ if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ return;
+ switch (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;
+ zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, req);
+ 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;
+ zfcp_erp_port_reopen(unit->port, 0, 111, req);
+ 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;
+ zfcp_erp_port_boxed(unit->port, 52, req);
+ 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]) {
+ switch (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;
+ /* fall through */
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));
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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
+ * zfcp_fsf_close_unit - close zfcp unit
+ * @erp_action: pointer to struct zfcp_unit
+ * Returns: 0 on success, error otherwise
*/
-int
-zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter,
- struct zfcp_unit *unit,
- struct scsi_cmnd * scsi_cmnd,
- struct timer_list *timer, int req_flags)
+int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
{
- 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;
- }
-
- zfcp_unit_get(unit);
- fsf_req->unit = unit;
-
- /* associate FSF request with SCSI request (for look up on abort) */
- scsi_cmnd->host_scribble = (char *) fsf_req;
-
- /* 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;
+ struct qdio_buffer_element *sbale;
+ struct zfcp_adapter *adapter = erp_action->adapter;
+ struct zfcp_fsf_req *req;
+ int retval = -EIO;
- /* 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);
-
- /*
- * start QDIO request for this FSF request
- * covered by an SBALE)
- */
- retval = zfcp_fsf_req_send(fsf_req, timer);
- 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:
- 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);
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN,
+ ZFCP_REQ_AUTO_CLEANUP,
+ adapter->pool.fsf_req_erp);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
goto out;
}
- /*
- * 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 = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
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;
+ req->qtcb->header.port_handle = erp_action->port->handle;
+ req->qtcb->header.lun_handle = erp_action->unit->handle;
+ req->handler = zfcp_fsf_close_unit_handler;
+ req->data = erp_action->unit;
+ req->erp_action = erp_action;
+ erp_action->fsf_req = req;
- /* start QDIO request for this FSF request */
- zfcp_fsf_start_scsi_er_timer(adapter);
- retval = zfcp_fsf_req_send(fsf_req, NULL);
+ zfcp_fsf_start_erp_timer(req);
+ retval = zfcp_fsf_req_send(req);
if (retval) {
- del_timer(&adapter->scsi_er_timer);
- ZFCP_LOG_INFO("error: Could not send an FCP-command (task "
- "management) on adapter %s, port 0x%016Lx for "
- "unit LUN 0x%016Lx\n",
- zfcp_get_busid_by_adapter(adapter),
- unit->port->wwpn,
- unit->fcp_lun);
- zfcp_fsf_req_free(fsf_req);
- fsf_req = NULL;
- goto out;
+ zfcp_fsf_req_free(req);
+ erp_action->fsf_req = NULL;
}
-
- ZFCP_LOG_TRACE("Send FCP Command (task management function) initiated "
- "(adapter %s, port 0x%016Lx, unit 0x%016Lx, "
- "tm_flags=0x%x)\n",
- zfcp_get_busid_by_adapter(adapter),
- unit->port->wwpn,
- unit->fcp_lun,
- tm_flags);
- out:
- write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
- return fsf_req;
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
+ return retval;
}
-/*
- * 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)
+static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
{
- 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;
+ lat_rec->sum += lat;
+ lat_rec->min = min(lat_rec->min, lat);
+ lat_rec->max = max(lat_rec->max, lat);
+}
- 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;
+static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req)
+{
+ struct fsf_qual_latency_info *lat_inf;
+ struct latency_cont *lat;
+ struct zfcp_unit *unit = req->unit;
+ unsigned long flags;
- 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;
+ lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info;
- 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;
+ switch (req->qtcb->bottom.io.data_direction) {
+ case FSF_DATADIR_READ:
+ lat = &unit->latencies.read;
break;
-
- case FSF_GOOD:
+ case FSF_DATADIR_WRITE:
+ lat = &unit->latencies.write;
break;
-
- case FSF_FCP_RSP_AVAILABLE:
+ case FSF_DATADIR_CMND:
+ lat = &unit->latencies.cmd;
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;
+ return;
}
- 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);
+ spin_lock_irqsave(&unit->latencies.lock, flags);
+ zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat);
+ zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat);
+ lat->counter++;
+ spin_unlock_irqrestore(&unit->latencies.lock, flags);
+}
+
+#ifdef CONFIG_BLK_DEV_IO_TRACE
+static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req)
+{
+ struct fsf_qual_latency_info *lat_inf;
+ struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
+ struct request *req = scsi_cmnd->request;
+ struct zfcp_blk_drv_data trace;
+ int ticks = fsf_req->adapter->timer_ticks;
+
+ trace.flags = 0;
+ trace.magic = ZFCP_BLK_DRV_DATA_MAGIC;
+ if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) {
+ trace.flags |= ZFCP_BLK_LAT_VALID;
+ lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info;
+ trace.channel_lat = lat_inf->channel_lat * ticks;
+ trace.fabric_lat = lat_inf->fabric_lat * ticks;
}
- return retval;
+ if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
+ trace.flags |= ZFCP_BLK_REQ_ERROR;
+ trace.inb_usage = fsf_req->qdio_inb_usage;
+ trace.outb_usage = fsf_req->qdio_outb_usage;
+
+ blk_add_driver_data(req->q, req, &trace, sizeof(trace));
+}
+#else
+static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req)
+{
}
+#endif
-/*
- * 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)
+static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *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);
+ &(req->qtcb->bottom.io.fcp_rsp);
u32 sns_len;
- char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu);
+ char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1];
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;
+ read_lock_irqsave(&req->adapter->abort_lock, flags);
+
+ scpnt = 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;
+ read_unlock_irqrestore(&req->adapter->abort_lock, flags);
+ return;
}
- 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);
+
+ if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) {
+ set_host_byte(scpnt, DID_SOFT_ERROR);
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);
+ if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
+ set_host_byte(scpnt, DID_ERROR);
goto skip_fsfstatus;
}
- /* set message byte of result in SCSI command */
- scpnt->result |= COMMAND_COMPLETE << 8;
+ set_msg_byte(scpnt, COMMAND_COMPLETE);
- /*
- * 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 (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)
+ zfcp_fsf_req_latency(req);
+
+ zfcp_fsf_trace_latency(req);
+
if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) {
- 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);
+ if (fcp_rsp_info[3] == RSP_CODE_GOOD)
+ set_host_byte(scpnt, DID_OK);
+ else {
+ set_host_byte(scpnt, 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 = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) +
+ fcp_rsp_iu->fcp_rsp_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));
+ memcpy(scpnt->sense_buffer,
+ zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len);
}
- /* 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));
-
- scpnt->resid = fcp_rsp_iu->fcp_resid;
- if (scpnt->request_bufflen - scpnt->resid < scpnt->underflow)
- set_host_byte(&scpnt->result, DID_ERROR);
+ scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid);
+ if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) <
+ scpnt->underflow)
+ set_host_byte(scpnt, DID_ERROR);
}
-
- skip_fsfstatus:
- ZFCP_LOG_DEBUG("scpnt->result =0x%x\n", scpnt->result);
-
+skip_fsfstatus:
if (scpnt->result != 0)
- zfcp_scsi_dbf_event_result("erro", 3, fsf_req->adapter, scpnt, fsf_req);
+ zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req);
else if (scpnt->retries > 0)
- zfcp_scsi_dbf_event_result("retr", 4, fsf_req->adapter, scpnt, fsf_req);
+ zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req);
else
- zfcp_scsi_dbf_event_result("norm", 6, fsf_req->adapter, scpnt, fsf_req);
+ zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, 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;
+ read_unlock_irqrestore(&req->adapter->abort_lock, flags);
}
-/*
- * 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)
+static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *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;
-
- del_timer(&fsf_req->adapter->scsi_er_timer);
- 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;
- }
+ &(req->qtcb->bottom.io.fcp_rsp);
+ char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1];
- skip_fsfstatus:
- return retval;
+ if ((fcp_rsp_info[3] != RSP_CODE_GOOD) ||
+ (req->status & ZFCP_STATUS_FSFREQ_ERROR))
+ req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
}
-/*
- * 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)
+static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req)
{
- struct zfcp_fsf_req *fsf_req;
- struct fsf_qtcb_bottom_support *bottom;
- volatile struct qdio_buffer_element *sbale;
- struct timer_list *timer;
- 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;
- }
-
- timer = kmalloc(sizeof(struct timer_list), GFP_KERNEL);
- if (!timer) {
- retval = -ENOMEM;
- 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;
-
- init_timer(timer);
- timer->function = zfcp_fsf_request_timeout_handler;
- timer->data = (unsigned long) adapter;
- timer->expires = ZFCP_FSF_REQUEST_TIMEOUT;
-
- retval = zfcp_fsf_req_send(fsf_req, timer);
- 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;
- del_timer_sync(timer);
- goto free_timer;
-
- free_fsf_req:
- zfcp_fsf_req_free(fsf_req);
- unlock_queue_lock:
- write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
- free_timer:
- kfree(timer);
- out:
- return retval;
-}
-
+ struct zfcp_unit *unit;
+ struct fsf_qtcb_header *header = &req->qtcb->header;
-/*
- * 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 (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
+ unit = req->data;
+ else
+ unit = req->unit;
- if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
- retval = -EINVAL;
+ if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
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;
+ case FSF_HANDLE_MISMATCH:
+ case FSF_PORT_HANDLE_NOT_VALID:
+ zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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;
+ case FSF_FCPLUN_NOT_VALID:
+ case FSF_LUN_HANDLE_NOT_VALID:
+ zfcp_erp_port_reopen(unit->port, 0, 113, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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;
+ case FSF_SERVICE_CLASS_NOT_SUPPORTED:
+ zfcp_fsf_class_not_supp(req);
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;
+ case FSF_ACCESS_DENIED:
+ zfcp_fsf_access_denied_unit(req, unit);
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;
+ case FSF_DIRECTION_INDICATOR_NOT_VALID:
+ dev_err(&req->adapter->ccw_device->dev,
+ "Incorrect direction %d, unit 0x%016Lx on port "
+ "0x%016Lx closed\n",
+ req->qtcb->bottom.io.data_direction,
+ (unsigned long long)unit->fcp_lun,
+ (unsigned long long)unit->port->wwpn);
+ zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
- 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;
+ case FSF_CMND_LENGTH_NOT_VALID:
+ dev_err(&req->adapter->ccw_device->dev,
+ "Incorrect CDB length %d, unit 0x%016Lx on "
+ "port 0x%016Lx closed\n",
+ req->qtcb->bottom.io.fcp_cmnd_length,
+ (unsigned long long)unit->fcp_lun,
+ (unsigned long long)unit->port->wwpn);
+ zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
-
- 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;
+ case FSF_PORT_BOXED:
+ zfcp_erp_port_boxed(unit->port, 53, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY;
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;
+ case FSF_LUN_BOXED:
+ zfcp_erp_unit_boxed(unit, 54, req);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR |
+ ZFCP_STATUS_FSFREQ_RETRY;
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;
+ case FSF_ADAPTER_STATUS_AVAILABLE:
+ if (header->fsf_status_qual.word[0] ==
+ FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
+ zfcp_test_link(unit->port);
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
-
skip_fsfstatus:
- return retval;
+ if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
+ zfcp_fsf_send_fcp_ctm_handler(req);
+ else {
+ zfcp_fsf_send_fcp_command_task_handler(req);
+ req->unit = NULL;
+ zfcp_unit_put(unit);
+ }
}
-static inline int
-zfcp_fsf_req_sbal_check(unsigned long *flags,
- struct zfcp_qdio_queue *queue, int needed)
+static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl)
{
- 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;
-}
+ u32 *fcp_dl_ptr;
-/*
- * set qtcb pointer in fsf_req and initialize QTCB
- */
-static inline 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;
- }
+ /*
+ * fcp_dl_addr = start address of fcp_cmnd structure +
+ * size of fixed part + size of dynamically sized add_dcp_cdb field
+ * SEE FCP-2 documentation
+ */
+ fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] +
+ (fcp_cmd->add_fcp_cdb_length << 2));
+ *fcp_dl_ptr = fcp_dl;
}
/**
- * zfcp_fsf_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)
+ * 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_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)
+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)
{
- volatile struct qdio_buffer_element *sbale;
- struct zfcp_fsf_req *fsf_req = NULL;
- unsigned long flags;
- 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;
- }
+ struct zfcp_fsf_req *req;
+ struct fcp_cmnd_iu *fcp_cmnd_iu;
+ unsigned int sbtype;
+ int real_bytes, retval = -EIO;
- fsf_req->adapter = adapter;
- fsf_req->fsf_command = fsf_cmd;
- INIT_LIST_HEAD(&fsf_req->list);
-
- /* unique request id */
- spin_lock_irqsave(&adapter->req_list_lock, flags);
- fsf_req->req_id = adapter->req_no++;
- spin_unlock_irqrestore(&adapter->req_list_lock, flags);
+ if (unlikely(!(atomic_read(&unit->status) &
+ ZFCP_STATUS_COMMON_UNBLOCKED)))
+ return -EBUSY;
- zfcp_fsf_req_qtcb_init(fsf_req);
+ spin_lock(&adapter->req_q_lock);
+ if (!zfcp_fsf_sbal_available(adapter))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
+ adapter->pool.fsf_req_scsi);
+ if (IS_ERR(req)) {
+ retval = PTR_ERR(req);
+ goto out;
+ }
- /* initialize waitqueue which may be used to wait on
- this request completion */
- init_waitqueue_head(&fsf_req->completion_wq);
+ zfcp_unit_get(unit);
+ req->unit = unit;
+ req->data = scsi_cmnd;
+ req->handler = zfcp_fsf_send_fcp_command_handler;
+ req->qtcb->header.lun_handle = unit->handle;
+ req->qtcb->header.port_handle = unit->port->handle;
+ req->qtcb->bottom.io.service_class = FSF_CLASS_3;
- ret = zfcp_fsf_req_sbal_get(adapter, req_flags, lock_flags);
- if(ret < 0) {
- goto failed_sbals;
- }
+ scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
+ fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd);
+ fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
/*
- * 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).
+ * set depending on data direction:
+ * data direction bits in SBALE (SB Type)
+ * data direction bits in QTCB
+ * data direction bits in FCP_CMND IU
*/
-
- if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) {
- write_unlock_irqrestore(&req_queue->queue_lock, *lock_flags);
- ret = -EIO;
- goto failed_sbals;
+ switch (scsi_cmnd->sc_data_direction) {
+ case DMA_NONE:
+ req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
+ sbtype = SBAL_FLAGS0_TYPE_READ;
+ break;
+ case DMA_FROM_DEVICE:
+ req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
+ sbtype = SBAL_FLAGS0_TYPE_READ;
+ fcp_cmnd_iu->rddata = 1;
+ break;
+ case DMA_TO_DEVICE:
+ req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
+ sbtype = SBAL_FLAGS0_TYPE_WRITE;
+ fcp_cmnd_iu->wddata = 1;
+ break;
+ case DMA_BIDIRECTIONAL:
+ default:
+ retval = -EIO;
+ goto failed_scsi_cmnd;
}
- 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((scsi_cmnd->device->simple_tags) ||
+ ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) &&
+ (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED))))
+ fcp_cmnd_iu->task_attribute = SIMPLE_Q;
+ else
+ fcp_cmnd_iu->task_attribute = UNTAGGED;
- if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) {
- fsf_req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- }
+ if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH))
+ fcp_cmnd_iu->add_fcp_cdb_length =
+ (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2;
- sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
+ memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
- /* 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);
+ req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) +
+ fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32);
+
+ real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype,
+ scsi_sglist(scsi_cmnd),
+ FSF_MAX_SBALS_PER_REQ);
+ if (unlikely(real_bytes < 0)) {
+ if (req->sbal_number < FSF_MAX_SBALS_PER_REQ)
+ retval = -EIO;
+ else {
+ dev_err(&adapter->ccw_device->dev,
+ "Oversize data package, unit 0x%016Lx "
+ "on port 0x%016Lx closed\n",
+ (unsigned long long)unit->fcp_lun,
+ (unsigned long long)unit->port->wwpn);
+ zfcp_erp_unit_shutdown(unit, 0, 131, req);
+ retval = -EINVAL;
+ }
+ goto failed_scsi_cmnd;
}
- ZFCP_LOG_TRACE("got %i free BUFFERs starting at index %i\n",
- fsf_req->sbal_number, fsf_req->sbal_first);
+ zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes);
- goto success;
+ if (use_timer)
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
- failed_sbals:
-/* dequeue new FSF request previously enqueued */
- zfcp_fsf_req_free(fsf_req);
- fsf_req = NULL;
+ retval = zfcp_fsf_req_send(req);
+ if (unlikely(retval))
+ goto failed_scsi_cmnd;
- failed_fsf_req:
- write_lock_irqsave(&req_queue->queue_lock, *lock_flags);
- success:
- *fsf_req_p = fsf_req;
- return ret;
+ goto out;
+
+failed_scsi_cmnd:
+ zfcp_unit_put(unit);
+ zfcp_fsf_req_free(req);
+ scsi_cmnd->host_scribble = NULL;
+out:
+ spin_unlock(&adapter->req_q_lock);
+ return retval;
}
-/*
- * 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
+/**
+ * zfcp_fsf_send_fcp_ctm - send SCSI task management command
+ * @adapter: pointer to struct zfcp-adapter
+ * @unit: pointer to struct zfcp_unit
+ * @tm_flags: unsigned byte for task management flags
+ * @req_flags: int request flags
+ * Returns: on success pointer to struct fsf_req, NULL otherwise
*/
-static int
-zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req, struct timer_list *timer)
+struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter,
+ struct zfcp_unit *unit,
+ u8 tm_flags, int req_flags)
{
- 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;
+ struct qdio_buffer_element *sbale;
+ struct zfcp_fsf_req *req = NULL;
+ struct fcp_cmnd_iu *fcp_cmnd_iu;
- adapter = fsf_req->adapter;
- req_queue = &adapter->request_queue,
+ if (unlikely(!(atomic_read(&unit->status) &
+ ZFCP_STATUS_COMMON_UNBLOCKED)))
+ return NULL;
+ spin_lock(&adapter->req_q_lock);
+ if (!zfcp_fsf_sbal_available(adapter))
+ goto out;
+ req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
+ adapter->pool.fsf_req_scsi);
+ if (IS_ERR(req)) {
+ req = NULL;
+ goto out;
+ }
- /* 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);
+ req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
+ req->data = unit;
+ req->handler = zfcp_fsf_send_fcp_command_handler;
+ req->qtcb->header.lun_handle = unit->handle;
+ req->qtcb->header.port_handle = unit->port->handle;
+ req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
+ req->qtcb->bottom.io.service_class = FSF_CLASS_3;
+ req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) +
+ sizeof(u32);
- /* 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);
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
+ sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- inc_seq_no = (fsf_req->qtcb != NULL);
+ fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd;
+ fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
+ fcp_cmnd_iu->task_management_flags = tm_flags;
- /* figure out expiration time of timeout and start timeout */
- if (unlikely(timer)) {
- timer->expires += jiffies;
- add_timer(timer);
- }
+ zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
+ if (!zfcp_fsf_req_send(req))
+ goto out;
- 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_fsf_req_free(req);
+ req = NULL;
+out:
+ spin_unlock(&adapter->req_q_lock);
+ return req;
+}
- 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]);
+static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
+{
+ if (req->qtcb->header.fsf_status != FSF_GOOD)
+ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
+}
- /*
- * 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);
+/**
+ * zfcp_fsf_control_file - control file upload/download
+ * @adapter: pointer to struct zfcp_adapter
+ * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
+ * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
+ */
+struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
+ struct zfcp_fsf_cfdc *fsf_cfdc)
+{
+ struct qdio_buffer_element *sbale;
+ struct zfcp_fsf_req *req = NULL;
+ struct fsf_qtcb_bottom_support *bottom;
+ int direction, retval = -EIO, bytes;
- fsf_req->issued = get_clock();
+ if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
+ return ERR_PTR(-EOPNOTSUPP);
- retval = do_QDIO(adapter->ccw_device,
- QDIO_FLAG_SYNC_OUTPUT,
- 0, fsf_req->sbal_first, fsf_req->sbal_number, NULL);
+ switch (fsf_cfdc->command) {
+ case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
+ direction = SBAL_FLAGS0_TYPE_WRITE;
+ break;
+ case FSF_QTCB_UPLOAD_CONTROL_FILE:
+ direction = SBAL_FLAGS0_TYPE_READ;
+ break;
+ default:
+ return ERR_PTR(-EINVAL);
+ }
- dbg_tmp[0] = (unsigned long) sbale[0].addr;
- dbg_tmp[1] = (u64) retval;
- debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16);
+ spin_lock_bh(&adapter->req_q_lock);
+ if (zfcp_fsf_req_sbal_get(adapter))
+ goto out;
- if (unlikely(retval)) {
- /* Queues are down..... */
- retval = -EIO;
- /*
- * FIXME(potential race):
- * timer might be expired (absolutely unlikely)
- */
- if (timer)
- del_timer(timer);
- spin_lock(&adapter->req_list_lock);
- zfcp_reqlist_remove(adapter, fsf_req->req_id);
- 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,
- */
+ req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL);
+ if (IS_ERR(req)) {
+ retval = -EPERM;
+ goto out;
+ }
+
+ req->handler = zfcp_fsf_control_file_handler;
+
+ sbale = zfcp_qdio_sbale_req(req);
+ sbale[0].flags |= direction;
- /* Don't increase for unsolicited status */
- if (inc_seq_no)
- adapter->fsf_req_seq_no++;
+ bottom = &req->qtcb->bottom.support;
+ bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
+ bottom->option = fsf_cfdc->option;
- /* count FSF requests pending */
- atomic_inc(&adapter->reqs_active);
+ bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg,
+ FSF_MAX_SBALS_PER_REQ);
+ if (bytes != ZFCP_CFDC_MAX_SIZE) {
+ retval = -ENOMEM;
+ zfcp_fsf_req_free(req);
+ goto out;
}
- return retval;
-}
-#undef ZFCP_LOG_AREA
+ zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
+ retval = zfcp_fsf_req_send(req);
+out:
+ spin_unlock_bh(&adapter->req_q_lock);
+
+ if (!retval) {
+ wait_event(req->completion_wq,
+ req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
+ return req;
+ }
+ return ERR_PTR(retval);
+}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff