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Diffstat (limited to 'drivers/scsi/isci/remote_device.h')
| -rw-r--r-- | drivers/scsi/isci/remote_device.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h new file mode 100644 index 000000000000..a208f81785eb --- /dev/null +++ b/drivers/scsi/isci/remote_device.h @@ -0,0 +1,154 @@ +/* + * 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. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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. + */ + +#if !defined(_ISCI_REMOTE_DEVICE_H_) +#define _ISCI_REMOTE_DEVICE_H_ +#include "scic_user_callback.h" + +struct isci_host; +struct scic_sds_remote_device; + +struct isci_remote_device { + struct scic_sds_remote_device *sci_device_handle; + enum isci_status status; + struct isci_port *isci_port; + struct domain_device *domain_dev; + struct completion *completion; + struct list_head node; + struct list_head reqs_in_process; + struct work_struct stop_work; + spinlock_t state_lock; + spinlock_t host_quiesce_lock; + bool host_quiesce; +}; + +#define to_isci_remote_device(p) \ + container_of(p, struct isci_remote_device, sci_remote_device); + +#define ISCI_REMOTE_DEVICE_START_TIMEOUT 5000 + + +/** + * This function gets the status of the remote_device object. + * @isci_device: This parameter points to the isci_remote_device object + * + * status of the object as a isci_status enum. + */ +static inline +enum isci_status isci_remote_device_get_state( + struct isci_remote_device *isci_device) +{ + return (isci_device->host_quiesce) + ? isci_host_quiesce + : isci_device->status; +} + + +/** + * isci_dev_from_domain_dev() - This accessor retrieves the remote_device + * object reference from the Linux domain_device reference. + * @domdev,: This parameter points to the Linux domain_device object . + * + * A reference to the associated isci remote device. + */ +#define isci_dev_from_domain_dev(domdev) \ + ((struct isci_remote_device *)(domdev)->lldd_dev) + +void isci_remote_device_start_complete( + struct isci_host *, + struct isci_remote_device *, + enum sci_status); + +void isci_remote_device_stop_complete( + struct isci_host *, + struct isci_remote_device *, + enum sci_status); + +enum sci_status isci_remote_device_stop( + struct isci_remote_device *isci_device); + +void isci_remote_device_nuke_requests( + struct isci_remote_device *isci_device); + +void isci_remote_device_ready( + struct isci_remote_device *); + +void isci_remote_device_not_ready( + struct isci_remote_device *, + u32); + +void isci_remote_device_gone( + struct domain_device *domain_dev); + +int isci_remote_device_found( + struct domain_device *domain_dev); + +bool isci_device_is_reset_pending( + struct isci_host *isci_host, + struct isci_remote_device *isci_device); + +void isci_device_clear_reset_pending( + struct isci_remote_device *isci_device); + +void isci_device_set_host_quiesce_lock_state( + struct isci_remote_device *isci_device, + bool lock_state); + +void isci_remote_device_change_state( + struct isci_remote_device *isci_device, + enum isci_status status); + +#endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */ + |