isci: Intel(R) C600 Series Chipset Storage Control Unit Driver

Support for the up to 2x4-port 6Gb/s SAS controllers embedded in the
chipset.

This is a snapshot of the first publicly available version of the driver,
commit 4c1db2d0 in the 'historical' branch.

   git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci.git historical

Signed-off-by: Maciej Trela <maciej.trela@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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_) */
+