diff options
Diffstat (limited to 'sys/dev/isci/scil/scif_sas_high_priority_request_queue.c')
| -rw-r--r-- | sys/dev/isci/scil/scif_sas_high_priority_request_queue.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/sys/dev/isci/scil/scif_sas_high_priority_request_queue.c b/sys/dev/isci/scil/scif_sas_high_priority_request_queue.c new file mode 100644 index 0000000..a9aada7 --- /dev/null +++ b/sys/dev/isci/scil/scif_sas_high_priority_request_queue.c @@ -0,0 +1,161 @@ +/*- + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * 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., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * BSD LICENSE + * + * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/** + * @file + * + * @brief This file contains all of method implementations specific to + * the high priority request queue (HPRQ). See the + * scif_sas_high_priority_request_queue.h file for additional + * information. + */ + +#include <dev/isci/scil/scif_sas_high_priority_request_queue.h> + +#include <dev/isci/scil/scif_sas_logger.h> +#include <dev/isci/scil/scif_sas_io_request.h> +#include <dev/isci/scil/scif_sas_controller.h> + +/** + * @brief This method initializes the fields of the HPRQ. It should be + * called during the construction of the object containing or + * utilizing it (i.e. SCIF_SAS_CONTROLLER). + * + * @param[in] fw_hprq This parameter specific the high priority request + * queue object being constructed. + * + * @return none + */ +void scif_sas_high_priority_request_queue_construct( + SCIF_SAS_HIGH_PRIORITY_REQUEST_QUEUE_T * fw_hprq, + SCI_BASE_LOGGER_T * logger +) +{ + SCIF_LOG_TRACE(( + logger, + SCIF_LOG_OBJECT_CONTROLLER | SCIF_LOG_OBJECT_DOMAIN_DISCOVERY, + "scif_sas_high_priority_request_queue_construct(0x%x,0x%x) enter\n", + fw_hprq, logger + )); + + sci_base_object_construct((SCI_BASE_OBJECT_T*) &fw_hprq->lock, logger); + fw_hprq->lock.level = SCI_LOCK_LEVEL_NONE; + + sci_pool_initialize(fw_hprq->pool); +} + +/** + * @brief This method will ensure all internal requests destined for + * devices contained in the supplied domain are properly removed + * from the high priority request queue. + * + * @param[in] fw_hprq This parameter specifies the high priority request + * queue object for which to attempt to remove elements. + * @param[in] fw_domain This parameter specifies the domain for which to + * remove all high priority requests. + * + * @return none + */ +void scif_sas_high_priority_request_queue_purge_domain( + SCIF_SAS_HIGH_PRIORITY_REQUEST_QUEUE_T * fw_hprq, + SCIF_SAS_DOMAIN_T * fw_domain +) +{ + SCIF_SAS_IO_REQUEST_T * fw_io; + POINTER_UINT io_address; + U32 index; + U32 element_count; + + SCIF_LOG_TRACE(( + sci_base_object_get_logger(&fw_hprq->lock), + SCIF_LOG_OBJECT_CONTROLLER | SCIF_LOG_OBJECT_DOMAIN_DISCOVERY, + "scif_sas_high_priority_request_queue_purge_domain(0x%x,0x%x) enter\n", + fw_hprq, fw_domain + )); + + element_count = sci_pool_count(fw_hprq->pool); + + scif_cb_lock_acquire(fw_domain->controller, &fw_hprq->lock); + + for (index = 0; index < element_count; index++) + { + sci_pool_get(fw_hprq->pool, io_address); + + fw_io = (SCIF_SAS_IO_REQUEST_T*) io_address; + + // If the high priority request is not intended for this domain, + // then it can be left in the pool. + if (fw_io->parent.device->domain != fw_domain) + { + sci_pool_put(fw_hprq->pool, io_address); + } + else + { + if (fw_io->parent.is_internal) + { + SCIF_SAS_INTERNAL_IO_REQUEST_T * fw_internal_io = + (SCIF_SAS_INTERNAL_IO_REQUEST_T *)fw_io; + + // The request was intended for a device in the domain. Put it + // back in the pool of freely available internal request memory + // objects. The internal IO's timer is to be destoyed. + scif_sas_internal_io_request_destruct(fw_domain->controller, fw_internal_io); + } + } + } + + scif_cb_lock_release(fw_domain->controller, &fw_hprq->lock); +} + |
