Infrastructure for phy initialization, port creation / destruction, and
remote device arrival / departure.
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
drivers/scsi/isci/phy.c | 179 +++++++++
drivers/scsi/isci/phy.h | 104 ++++++
drivers/scsi/isci/port.c | 484 ++++++++++++++++++++++++++
drivers/scsi/isci/port.h | 153 ++++++++
drivers/scsi/isci/remote_device.c | 698 +++++++++++++++++++++++++++++++++++++
drivers/scsi/isci/remote_device.h | 154 ++++++++
6 files changed, 1772 insertions(+), 0 deletions(-)
create mode 100644 drivers/scsi/isci/phy.c
create mode 100644 drivers/scsi/isci/phy.h
create mode 100644 drivers/scsi/isci/port.c
create mode 100644 drivers/scsi/isci/port.h
create mode 100644 drivers/scsi/isci/remote_device.c
create mode 100644 drivers/scsi/isci/remote_device.h
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c
new file mode 100644
index 0000000..fbda570
--- /dev/null
+++ b/drivers/scsi/isci/phy.c
@@ -0,0 +1,179 @@
+/*
+ * 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.
+ */
+
+#include "isci.h"
+#include "phy.h"
+#include "scic_port.h"
+#include "scic_config_parameters.h"
+
+
+/**
+ * isci_phy_init() - This function is called by the probe function to
+ * initialize the phy objects. This func assumes that the isci_port objects
+ * associated with the SCU have been initialized.
+ * @isci_phy: This parameter specifies the isci_phy object to initialize
+ * @isci_host: This parameter specifies the parent SCU host object for this
+ * isci_phy
+ * @index: This parameter specifies which SCU phy associates with this
+ * isci_phy. Generally, SCU phy 0 relates isci_phy 0, etc.
+ *
+ */
+void isci_phy_init(
+ struct isci_phy *phy,
+ struct isci_host *isci_host,
+ int index)
+{
+ struct scic_sds_controller *controller = isci_host->core_controller;
+ struct scic_sds_phy *scic_phy;
+ union scic_oem_parameters oem_parameters;
+ enum sci_status status = SCI_SUCCESS;
+
+ /*--------------- SCU_Phy Initialization Stuff -----------------------*/
+
+ status = scic_controller_get_phy_handle(controller, index, &scic_phy);
+ if (status == SCI_SUCCESS) {
+ sci_object_set_association(scic_phy, (void *)phy);
+ phy->sci_phy_handle = scic_phy;
+ } else
+ dev_err(&isci_host->pdev->dev,
+ "failed scic_controller_get_phy_handle\n");
+
+ scic_oem_parameters_get(controller, &oem_parameters);
+
+ phy->sas_addr[0] = oem_parameters.sds1.phys[index].sas_address.low
+ & 0xFF;
+ phy->sas_addr[1] = (oem_parameters.sds1.phys[index].sas_address.low
+ >> 8) & 0xFF;
+ phy->sas_addr[2] = (oem_parameters.sds1.phys[index].sas_address.low
+ >> 16) & 0xFF;
+ phy->sas_addr[3] = (oem_parameters.sds1.phys[index].sas_address.low
+ >> 24) & 0xFF;
+ phy->sas_addr[4] = oem_parameters.sds1.phys[index].sas_address.high
+ & 0xFF;
+ phy->sas_addr[5] = (oem_parameters.sds1.phys[index].sas_address.high
+ >> 8) & 0xFF;
+ phy->sas_addr[6] = (oem_parameters.sds1.phys[index].sas_address.high
+ >> 16) & 0xFF;
+ phy->sas_addr[7] = (oem_parameters.sds1.phys[index].sas_address.high
+ >> 24) & 0xFF;
+
+ phy->isci_port = NULL;
+ phy->sas_phy.enabled = 0;
+ phy->sas_phy.id = index;
+ phy->sas_phy.sas_addr = &phy->sas_addr[0];
+ phy->sas_phy.frame_rcvd = (u8 *)&phy->frame_rcvd;
+ phy->sas_phy.ha = &isci_host->sas_ha;
+ phy->sas_phy.lldd_phy = phy;
+ phy->sas_phy.enabled = 1;
+ phy->sas_phy.class = SAS;
+ phy->sas_phy.iproto = SAS_PROTOCOL_ALL;
+ phy->sas_phy.tproto = 0;
+ phy->sas_phy.type = PHY_TYPE_PHYSICAL;
+ phy->sas_phy.role = PHY_ROLE_INITIATOR;
+ phy->sas_phy.oob_mode = OOB_NOT_CONNECTED;
+ phy->sas_phy.linkrate = SAS_LINK_RATE_UNKNOWN;
+ memset((u8 *)&phy->frame_rcvd, 0, sizeof(phy->frame_rcvd));
+}
+
+
+/**
+ * isci_phy_control() - This function is one of the SAS Domain Template
+ * functions. This is a phy management function.
+ * @phy: This parameter specifies the sphy being controlled.
+ * @func: This parameter specifies the phy control function being invoked.
+ * @buf: This parameter is specific to the phy function being invoked.
+ *
+ * status, zero indicates success.
+ */
+int isci_phy_control(
+ struct asd_sas_phy *phy,
+ enum phy_func func,
+ void *buf)
+{
+ int ret = TMF_RESP_FUNC_COMPLETE;
+ struct isci_phy *isci_phy_ptr = (struct isci_phy *)phy->lldd_phy;
+ struct isci_port *isci_port_ptr = NULL;
+
+ if (isci_phy_ptr != NULL)
+ isci_port_ptr = isci_phy_ptr->isci_port;
+
+ if ((isci_phy_ptr == NULL) || (isci_port_ptr == NULL)) {
+ pr_err("%s: asd_sas_phy %p: lldd_phy %p or "
+ "isci_port %p == NULL!\n",
+ __func__, phy, isci_phy_ptr, isci_port_ptr);
+ return TMF_RESP_FUNC_FAILED;
+ }
+
+ pr_debug("%s: phy %p; func %d; buf %p; isci phy %p, port %p\n",
+ __func__, phy, func, buf, isci_phy_ptr, isci_port_ptr);
+
+ switch (func) {
+ case PHY_FUNC_HARD_RESET:
+ case PHY_FUNC_LINK_RESET:
+
+ /* Perform the port reset. */
+ ret = isci_port_perform_hard_reset(isci_port_ptr, isci_phy_ptr);
+
+ break;
+
+ case PHY_FUNC_DISABLE:
+ default:
+ pr_debug("%s: phy %p; func %d NOT IMPLEMENTED!\n",
+ __func__, phy, func);
+ ret = TMF_RESP_FUNC_FAILED;
+ break;
+ }
+ return ret;
+}
diff --git a/drivers/scsi/isci/phy.h b/drivers/scsi/isci/phy.h
new file mode 100644
index 0000000..44b727f
--- /dev/null
+++ b/drivers/scsi/isci/phy.h
@@ -0,0 +1,104 @@
+/*
+ * 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_PHY_H_)
+#define _ISCI_PHY_H_
+
+#include "port.h"
+#include "host.h"
+#include <scsi/libsas.h>
+
+
+/**
+ * struct isci_phy - This class implements the ISCI specific representation of
+ * the phy object.
+ *
+ *
+ */
+
+struct isci_phy {
+
+ struct scic_sds_phy *sci_phy_handle;
+
+ struct asd_sas_phy sas_phy;
+ struct sas_identify_frame *frame;
+ struct isci_port *isci_port;
+ u8 sas_addr[SAS_ADDR_SIZE];
+
+ union {
+
+ u8 aif[sizeof(struct sci_sas_identify_address_frame)];
+ u8 fis[sizeof(struct sata_fis_reg_d2h)];
+
+ } frame_rcvd;
+};
+
+#define to_isci_phy(p) \
+ container_of(p, struct isci_phy, sas_phy);
+
+struct isci_host;
+
+void isci_phy_init(
+ struct isci_phy *phy,
+ struct isci_host *isci_host,
+ int index);
+
+int isci_phy_control(
+ struct asd_sas_phy *phy,
+ enum phy_func func,
+ void *buf);
+
+#endif /* !defined(_ISCI_PHY_H_) */
diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c
new file mode 100644
index 0000000..2343f65
--- /dev/null
+++ b/drivers/scsi/isci/port.c
@@ -0,0 +1,484 @@
+/*
+ * 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.
+ */
+
+/**
+ * This file contains the isci port implementation.
+ *
+ *
+ */
+
+
+#include <linux/workqueue.h>
+#include "isci.h"
+#include "scic_io_request.h"
+#include "scic_remote_device.h"
+#include "scic_phy.h"
+#include "scic_sds_phy.h"
+#include "scic_port.h"
+#include "port.h"
+#include "request.h"
+
+static void isci_port_change_state(
+ struct isci_port *isci_port,
+ enum isci_status status);
+
+
+
+/**
+ * isci_port_init() - This function initializes the given isci_port object.
+ * @isci_port: This parameter specifies the port object to be initialized.
+ * @isci_host: This parameter specifies parent controller object for the port.
+ * @index: This parameter specifies which SCU port the isci_port associates
+ * with. Generally, SCU port 0 relates to isci_port 0, etc.
+ *
+ */
+void isci_port_init(
+ struct isci_port *isci_port,
+ struct isci_host *isci_host,
+ int index)
+{
+ struct scic_sds_port *scic_port;
+ struct scic_sds_controller *controller = isci_host->core_controller;
+
+ INIT_LIST_HEAD(&isci_port->remote_dev_list);
+ INIT_LIST_HEAD(&isci_port->domain_dev_list);
+ spin_lock_init(&isci_port->remote_device_lock);
+ spin_lock_init(&isci_port->state_lock);
+ init_completion(&isci_port->start_complete);
+ isci_port->isci_host = isci_host;
+ isci_port_change_state(isci_port, isci_freed);
+
+ (void)scic_controller_get_port_handle(controller, index, &scic_port);
+ sci_object_set_association(scic_port, isci_port);
+ isci_port->sci_port_handle = scic_port;
+}
+
+
+/**
+ * isci_port_get_state() - This function gets the status of the port object.
+ * @isci_port: This parameter points to the isci_port object
+ *
+ * status of the object as a isci_status enum.
+ */
+enum isci_status isci_port_get_state(
+ struct isci_port *isci_port)
+{
+ return isci_port->status;
+}
+
+static void isci_port_change_state(
+ struct isci_port *isci_port,
+ enum isci_status status)
+{
+ unsigned long flags;
+
+ dev_dbg(&isci_port->isci_host->pdev->dev,
+ "%s: isci_port = %p, state = 0x%x\n",
+ __func__, isci_port, status);
+
+ spin_lock_irqsave(&isci_port->state_lock, flags);
+ isci_port->status = status;
+ spin_unlock_irqrestore(&isci_port->state_lock, flags);
+}
+
+void isci_port_bc_change_received(
+ struct isci_host *isci_host,
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ struct isci_phy *isci_phy =
+ (struct isci_phy *)sci_object_get_association(phy);
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_phy = %p, sas_phy = %p\n",
+ __func__,
+ isci_phy,
+ &isci_phy->sas_phy);
+
+ isci_host->sas_ha.notify_port_event(
+ &isci_phy->sas_phy,
+ PORTE_BROADCAST_RCVD
+ );
+
+ scic_port_enable_broadcast_change_notification(port);
+}
+
+/**
+ * isci_port_link_up() - This function is called by the sci core when a link
+ * becomes active. the identify address frame is retrieved from the core and
+ * a notify port event is sent to libsas.
+ * @isci_host: This parameter specifies the isci host object.
+ * @port: This parameter specifies the sci port with the active link.
+ * @phy: This parameter specifies the sci phy with the active link.
+ *
+ */
+void isci_port_link_up(
+ struct isci_host *isci_host,
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ unsigned long flags;
+ struct scic_port_properties properties;
+ struct isci_phy *isci_phy
+ = (struct isci_phy *)sci_object_get_association(phy);
+ struct isci_port *isci_port
+ = (struct isci_port *)sci_object_get_association(port);
+ enum sci_status call_status;
+ unsigned long success = true;
+
+ BUG_ON(isci_phy->isci_port != NULL);
+ isci_phy->isci_port = isci_port;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_port = %p\n",
+ __func__, isci_port);
+
+ spin_lock_irqsave(&isci_phy->sas_phy.frame_rcvd_lock, flags);
+
+ isci_port_change_state(isci_phy->isci_port, isci_starting);
+
+ scic_port_get_properties(port, &properties);
+
+ if (properties.remote.protocols.u.bits.stp_target) {
+
+ struct scic_sata_phy_properties sata_phy_properties;
+
+ isci_phy->sas_phy.oob_mode = SATA_OOB_MODE;
+
+ /* Get a copy of the signature fis for libsas */
+ call_status = scic_sata_phy_get_properties(phy,
+ &sata_phy_properties);
+
+ /*
+ * XXX I am concerned about this "assert". shouldn't we
+ * handle the return appropriately?
+ */
+ BUG_ON(call_status != SCI_SUCCESS);
+
+ memcpy(isci_phy->frame_rcvd.fis,
+ &sata_phy_properties.signature_fis,
+ sizeof(struct sata_fis_reg_d2h));
+
+ isci_phy->sas_phy.frame_rcvd_size = sizeof(struct sata_fis_reg_d2h);
+
+ /*
+ * For direct-attached SATA devices, the SCI core will
+ * automagically assign a SAS address to the end device
+ * for the purpose of creating a port. This SAS address
+ * will not be the same as assigned to the PHY and needs
+ * to be obtained from struct scic_port_properties properties.
+ */
+
+ BUG_ON(((size_t)SAS_ADDR_SIZE / 2)
+ != sizeof(properties.remote.sas_address.low));
+
+ memcpy(&isci_phy->sas_phy.attached_sas_addr[0],
+ &properties.remote.sas_address.low,
+ SAS_ADDR_SIZE / 2);
+
+ memcpy(&isci_phy->sas_phy.attached_sas_addr[4],
+ &properties.remote.sas_address.high,
+ SAS_ADDR_SIZE / 2);
+
+ } else if (properties.remote.protocols.u.bits.ssp_target ||
+ properties.remote.protocols.u.bits.smp_target) {
+
+ struct scic_sas_phy_properties sas_phy_properties;
+
+ isci_phy->sas_phy.oob_mode = SAS_OOB_MODE;
+
+ /* Get a copy of the identify address frame for libsas */
+ call_status = scic_sas_phy_get_properties(phy,
+ &sas_phy_properties);
+
+ BUG_ON(call_status != SCI_SUCCESS);
+
+ memcpy(isci_phy->frame_rcvd.aif,
+ &(sas_phy_properties.received_iaf),
+ sizeof(struct sci_sas_identify_address_frame));
+
+ isci_phy->sas_phy.frame_rcvd_size
+ = sizeof(struct sci_sas_identify_address_frame);
+
+ /* Copy the attached SAS address from the IAF */
+ memcpy(isci_phy->sas_phy.attached_sas_addr,
+ ((struct sas_identify_frame *)
+ (&isci_phy->frame_rcvd.aif))->sas_addr,
+ SAS_ADDR_SIZE);
+
+ } else {
+ dev_err(&isci_host->pdev->dev, "%s: unkown target\n", __func__);
+ success = false;
+ }
+
+ spin_unlock_irqrestore(&isci_phy->sas_phy.frame_rcvd_lock, flags);
+
+ /* Notify libsas that we have an address frame, if indeed
+ * we've found an SSP, SMP, or STP target */
+ if (success)
+ isci_host->sas_ha.notify_port_event(&isci_phy->sas_phy,
+ PORTE_BYTES_DMAED);
+}
+
+
+/**
+ * isci_port_link_down() - This function is called by the sci core when a link
+ * becomes inactive.
+ * @isci_host: This parameter specifies the isci host object.
+ * @phy: This parameter specifies the isci phy with the active link.
+ * @port: This parameter specifies the isci port with the active link.
+ *
+ */
+void isci_port_link_down(
+ struct isci_host *isci_host,
+ struct isci_phy *isci_phy,
+ struct isci_port *isci_port)
+{
+ struct isci_remote_device *isci_device;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_port = %p\n", __func__, isci_port);
+
+ if (isci_port) {
+
+ /* check to see if this is the last phy on this port. */
+ if (isci_phy->sas_phy.port
+ && isci_phy->sas_phy.port->num_phys == 1) {
+
+ /* change the state for all devices on this port.
+ * The next task sent to this device will be returned
+ * as SAS_TASK_UNDELIVERED, and the scsi mid layer
+ * will remove the target
+ */
+ list_for_each_entry(isci_device,
+ &isci_port->remote_dev_list,
+ node) {
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_device = %p\n",
+ __func__, isci_device);
+ isci_remote_device_change_state(isci_device,
+ isci_stopping);
+ }
+ }
+ isci_port_change_state(isci_port, isci_stopping);
+ }
+
+ /* Notify libsas of the borken link, this will trigger calls to our
+ * isci_port_deformed and isci_dev_gone functions.
+ */
+ sas_phy_disconnected(&isci_phy->sas_phy);
+ isci_host->sas_ha.notify_phy_event(&isci_phy->sas_phy,
+ PHYE_LOSS_OF_SIGNAL);
+
+ isci_phy->isci_port = NULL;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_port = %p - Done\n", __func__, isci_port);
+}
+
+
+/**
+ * isci_port_deformed() - This function is called by libsas when a port becomes
+ * inactive.
+ * @phy: This parameter specifies the libsas phy with the inactive port.
+ *
+ */
+void isci_port_deformed(
+ struct asd_sas_phy *phy)
+{
+ pr_debug("%s: sas_phy = %p\n", __func__, phy);
+}
+
+/**
+ * isci_port_formed() - This function is called by libsas when a port becomes
+ * active.
+ * @phy: This parameter specifies the libsas phy with the active port.
+ *
+ */
+void isci_port_formed(
+ struct asd_sas_phy *phy)
+{
+ pr_debug("%s: sas_phy = %p, sas_port = %p\n", __func__, phy, phy->port);
+}
+
+/**
+ * isci_port_ready() - This function is called by the sci core when a link
+ * becomes ready.
+ * @isci_host: This parameter specifies the isci host object.
+ * @port: This parameter specifies the sci port with the active link.
+ *
+ */
+void isci_port_ready(
+ struct isci_host *isci_host,
+ struct isci_port *isci_port)
+{
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_port = %p\n", __func__, isci_port);
+
+ complete_all(&isci_port->start_complete);
+ isci_port_change_state(isci_port, isci_ready);
+ return;
+}
+
+/**
+ * isci_port_not_ready() - This function is called by the sci core when a link
+ * is not ready. All remote devices on this link will be removed if they are
+ * in the stopping state.
+ * @isci_host: This parameter specifies the isci host object.
+ * @port: This parameter specifies the sci port with the active link.
+ *
+ */
+void isci_port_not_ready(
+ struct isci_host *isci_host,
+ struct isci_port *isci_port)
+{
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_port = %p\n", __func__, isci_port);
+}
+
+/**
+ * isci_port_hard_reset_complete() - This function is called by the sci core
+ * when the hard reset complete notification has been received.
+ * @port: This parameter specifies the sci port with the active link.
+ * @completion_status: This parameter specifies the core status for the reset
+ * process.
+ *
+ */
+void isci_port_hard_reset_complete(
+ struct isci_port *isci_port,
+ enum sci_status completion_status)
+{
+ dev_dbg(&isci_port->isci_host->pdev->dev,
+ "%s: isci_port = %p, completion_status=%x\n",
+ __func__, isci_port, completion_status);
+
+ /* Save the status of the hard reset from the port. */
+ isci_port->hard_reset_status = completion_status;
+
+ complete_all(&isci_port->hard_reset_complete);
+}
+/**
+ * isci_port_perform_hard_reset() - This function is one of the SAS Domain
+ * Template functions. This is a phy management function.
+ * @isci_port:
+ * @isci_phy:
+ *
+ * status, TMF_RESP_FUNC_COMPLETE indicates success.
+ */
+int isci_port_perform_hard_reset(
+ struct isci_port *isci_port,
+ struct isci_phy *isci_phy)
+{
+ enum sci_status status;
+ int ret = TMF_RESP_FUNC_COMPLETE;
+ unsigned long flags;
+
+
+ dev_dbg(&isci_port->isci_host->pdev->dev,
+ "%s: isci_port = %p\n",
+ __func__, isci_port);
+
+ BUG_ON(isci_port == NULL);
+
+ init_completion(&isci_port->hard_reset_complete);
+
+ spin_lock_irqsave(&isci_port->isci_host->scic_lock, flags);
+
+ #define ISCI_PORT_RESET_TIMEOUT SCIC_SDS_SIGNATURE_FIS_TIMEOUT
+ status = scic_port_hard_reset(isci_port->sci_port_handle,
+ ISCI_PORT_RESET_TIMEOUT);
+
+ spin_unlock_irqrestore(&isci_port->isci_host->scic_lock, flags);
+
+ if (status == SCI_SUCCESS) {
+ wait_for_completion(&isci_port->hard_reset_complete);
+
+ dev_dbg(&isci_port->isci_host->pdev->dev,
+ "%s: isci_port = %p; hard reset completion\n",
+ __func__, isci_port);
+
+ if (isci_port->hard_reset_status != SCI_SUCCESS)
+ ret = TMF_RESP_FUNC_FAILED;
+ } else {
+ ret = TMF_RESP_FUNC_FAILED;
+
+ dev_err(&isci_port->isci_host->pdev->dev,
+ "%s: isci_port = %p; scic_port_hard_reset call"
+ " failed 0x%x\n",
+ __func__, isci_port, status);
+
+ }
+
+ /* If the hard reset for the port has failed, consider this
+ * the same as link failures on all phys in the port.
+ */
+ if (ret != TMF_RESP_FUNC_COMPLETE) {
+ BUG_ON(isci_port->isci_host == NULL);
+
+ dev_err(&isci_port->isci_host->pdev->dev,
+ "%s: isci_port = %p; hard reset failed "
+ "(0x%x) - sending link down to libsas for phy %p\n",
+ __func__,
+ isci_port,
+ isci_port->hard_reset_status,
+ isci_phy);
+
+ isci_port_link_down(isci_port->isci_host,
+ isci_phy,
+ isci_port);
+ }
+
+ return ret;
+}
diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h
new file mode 100644
index 0000000..b01b0c6
--- /dev/null
+++ b/drivers/scsi/isci/port.h
@@ -0,0 +1,153 @@
+/*
+ * 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.
+ */
+
+/**
+ * This file contains the isci_port object definition.
+ *
+ * port.h
+ */
+
+#if !defined(_ISCI_PORT_H_)
+#define _ISCI_PORT_H_
+
+struct isci_phy;
+struct isci_host;
+
+
+enum isci_status {
+ isci_freed = 0x00,
+ isci_starting = 0x01,
+ isci_ready = 0x02,
+ isci_ready_for_io = 0x03,
+ isci_stopping = 0x04,
+ isci_stopped = 0x05,
+ isci_host_quiesce = 0x06
+};
+
+/**
+ * struct isci_port - This class represents the port object used to internally
+ * represent libsas port objects. It also keeps a list of remote device
+ * objects.
+ *
+ *
+ */
+struct isci_port {
+
+ struct scic_sds_port *sci_port_handle;
+
+ enum isci_status status;
+ struct isci_host *isci_host;
+ struct asd_sas_port sas_port;
+ struct list_head remote_dev_list;
+ spinlock_t remote_device_lock;
+ spinlock_t state_lock;
+ struct list_head domain_dev_list;
+ struct completion start_complete;
+ struct completion hard_reset_complete;
+ enum sci_status hard_reset_status;
+};
+
+#define to_isci_port(p) \
+ container_of(p, struct isci_port, sas_port);
+
+enum isci_status isci_port_get_state(
+ struct isci_port *isci_port);
+
+
+
+void isci_port_formed(
+ struct asd_sas_phy *);
+
+void isci_port_deformed(
+ struct asd_sas_phy *);
+
+void isci_port_bc_change_received(
+ struct isci_host *isci_host,
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy);
+
+void isci_port_link_up(
+ struct isci_host *isci_host,
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy);
+
+void isci_port_link_down(
+ struct isci_host *isci_host,
+ struct isci_phy *isci_phy,
+ struct isci_port *port);
+
+void isci_port_ready(
+ struct isci_host *isci_host,
+ struct isci_port *isci_port);
+
+void isci_port_not_ready(
+ struct isci_host *isci_host,
+ struct isci_port *port);
+
+void isci_port_init(
+ struct isci_port *port,
+ struct isci_host *host,
+ int index);
+
+void isci_port_hard_reset_complete(
+ struct isci_port *isci_port,
+ enum sci_status completion_status);
+
+int isci_port_perform_hard_reset(
+ struct isci_port *isci_port_ptr,
+ struct isci_phy *isci_phy_ptr);
+
+#endif /* !defined(_ISCI_PORT_H_) */
+
diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c
new file mode 100644
index 0000000..dbf3c82
--- /dev/null
+++ b/drivers/scsi/isci/remote_device.c
@@ -0,0 +1,698 @@
+/*
+ * 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.
+ */
+
+#include "isci.h"
+#include "scic_io_request.h"
+#include "scic_remote_device.h"
+#include "scic_phy.h"
+#include "scic_port.h"
+#include "port.h"
+#include "remote_device.h"
+#include "request.h"
+#include "task.h"
+
+
+
+/**
+ * isci_remote_device_deconstruct() - This function frees an isci_remote_device.
+ * @isci_host: This parameter specifies the isci host object.
+ * @isci_device: This parameter specifies the remote device to be freed.
+ *
+ */
+static void isci_remote_device_deconstruct(
+ struct isci_host *isci_host,
+ struct isci_remote_device *isci_device)
+{
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_device = %p\n", __func__, isci_device);
+
+ /* There should not be any outstanding io's. All paths to
+ * here should go through isci_remote_device_nuke_requests.
+ * If we hit this condition, we will need a way to complete
+ * io requests in process */
+ while (!list_empty(&isci_device->reqs_in_process)) {
+
+ dev_err(&isci_host->pdev->dev,
+ "%s: ** request list not empty! **\n", __func__);
+ BUG();
+ }
+
+ /* Remove all related references to this device and free
+ * the cache object.
+ */
+ scic_remote_device_destruct(isci_device->sci_device_handle);
+ isci_device->domain_dev->lldd_dev = NULL;
+ list_del(&isci_device->node);
+ kmem_cache_free(isci_kmem_cache, isci_device);
+}
+
+
+/**
+ * isci_remote_device_construct() - This function calls the scic remote device
+ * construct and start functions, it waits on the remote device start
+ * completion.
+ * @port: This parameter specifies the isci port with the remote device.
+ * @isci_device: This parameter specifies the isci remote device
+ *
+ * status from the scic calls, the caller to this function should clean up
+ * resources as appropriate.
+ */
+static enum sci_status isci_remote_device_construct(
+ struct isci_port *port,
+ struct isci_remote_device *isci_device)
+{
+ enum sci_status status = SCI_SUCCESS;
+
+ /* let the core do it's common constuction. */
+ scic_remote_device_construct(port->sci_port_handle,
+ isci_device->sci_device_handle);
+
+ /* let the core do it's device specific constuction. */
+ if (isci_device->domain_dev->parent &&
+ (isci_device->domain_dev->parent->dev_type == EDGE_DEV)) {
+ int i;
+
+ /* struct smp_response_discover discover_response; */
+ struct discover_resp discover_response;
+ struct domain_device *parent =
+ isci_device->domain_dev->parent;
+
+ struct expander_device *parent_ex = &parent->ex_dev;
+
+ for (i = 0; i < parent_ex->num_phys; i++) {
+
+ struct ex_phy *phy = &parent_ex->ex_phy[i];
+
+ if ((phy->phy_state == PHY_VACANT) ||
+ (phy->phy_state == PHY_NOT_PRESENT))
+ continue;
+
+ if (SAS_ADDR(phy->attached_sas_addr)
+ == SAS_ADDR(isci_device->domain_dev->sas_addr)) {
+
+ discover_response.attached_dev_type
+ = phy->attached_dev_type;
+ discover_response.linkrate
+ = phy->linkrate;
+ discover_response.attached_sata_host
+ = phy->attached_sata_host;
+ discover_response.attached_sata_dev
+ = phy->attached_sata_dev;
+ discover_response.attached_sata_ps
+ = phy->attached_sata_ps;
+ discover_response.iproto
+ = phy->attached_iproto >> 1;
+ discover_response.tproto
+ = phy->attached_tproto >> 1;
+ memcpy(
+ discover_response.attached_sas_addr,
+ phy->attached_sas_addr,
+ SAS_ADDR_SIZE
+ );
+ discover_response.attached_phy_id
+ = phy->attached_phy_id;
+ discover_response.change_count
+ = phy->phy_change_count;
+ discover_response.routing_attr
+ = phy->routing_attr;
+ discover_response.hmin_linkrate
+ = phy->phy->minimum_linkrate_hw;
+ discover_response.hmax_linkrate
+ = phy->phy->maximum_linkrate_hw;
+ discover_response.pmin_linkrate
+ = phy->phy->minimum_linkrate;
+ discover_response.pmax_linkrate
+ = phy->phy->maximum_linkrate;
+ }
+ }
+
+
+ dev_dbg(&port->isci_host->pdev->dev,
+ "%s: parent->dev_type = EDGE_DEV\n",
+ __func__);
+
+ status = scic_remote_device_ea_construct(
+ isci_device->sci_device_handle,
+ (struct smp_response_discover *)&discover_response
+ );
+
+ } else
+ status = scic_remote_device_da_construct(
+ isci_device->sci_device_handle
+ );
+
+
+ if (status != SCI_SUCCESS) {
+ dev_dbg(&port->isci_host->pdev->dev,
+ "%s: scic_remote_device_da_construct failed - "
+ "isci_device = %p\n",
+ __func__,
+ isci_device);
+
+ return status;
+ }
+
+ sci_object_set_association(
+ isci_device->sci_device_handle,
+ isci_device
+ );
+
+ BUG_ON(port->isci_host == NULL);
+
+ /* start the device. */
+ status = scic_remote_device_start(
+ isci_device->sci_device_handle,
+ ISCI_REMOTE_DEVICE_START_TIMEOUT
+ );
+
+ if (status != SCI_SUCCESS) {
+ dev_warn(&port->isci_host->pdev->dev,
+ "%s: scic_remote_device_start failed\n",
+ __func__);
+ return status;
+ }
+
+ return status;
+}
+
+
+/**
+ * isci_remote_device_nuke_requests() - This function terminates all requests
+ * for a given remote device.
+ * @isci_device: This parameter specifies the remote device
+ *
+ */
+void isci_remote_device_nuke_requests(
+ struct isci_remote_device *isci_device)
+{
+ DECLARE_COMPLETION_ONSTACK(aborted_task_completion);
+ struct isci_host *isci_host;
+
+ isci_host = isci_device->isci_port->isci_host;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_device = %p\n", __func__, isci_device);
+
+ /* Cleanup all requests pending for this device. */
+ isci_terminate_pending_requests(isci_host, isci_device, terminating);
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_device = %p, done\n", __func__, isci_device);
+}
+
+
+
+/**
+ * This function builds the isci_remote_device when a libsas dev_found message
+ * is received.
+ * @isci_host: This parameter specifies the isci host object.
+ * @port: This parameter specifies the isci_port conected to this device.
+ *
+ * pointer to new isci_remote_device.
+ */
+static struct isci_remote_device *
+isci_remote_device_alloc(struct isci_host *isci_host, struct isci_port *port)
+{
+ struct isci_remote_device *isci_device;
+ struct scic_sds_remote_device *sci_dev;
+
+ isci_device = kmem_cache_zalloc(isci_kmem_cache, GFP_KERNEL);
+
+ if (!isci_device) {
+ dev_warn(&isci_host->pdev->dev, "%s: failed\n", __func__);
+ return NULL;
+ }
+
+ sci_dev = (struct scic_sds_remote_device *) &isci_device[1];
+ isci_device->sci_device_handle = sci_dev;
+ INIT_LIST_HEAD(&isci_device->reqs_in_process);
+ INIT_LIST_HEAD(&isci_device->node);
+ isci_device->host_quiesce = false;
+
+ spin_lock_init(&isci_device->state_lock);
+ spin_lock_init(&isci_device->host_quiesce_lock);
+ isci_remote_device_change_state(isci_device, isci_freed);
+
+ return isci_device;
+
+}
+/**
+ * isci_device_set_host_quiesce_lock_state() - This function sets the host I/O
+ * quiesce lock state for the remote_device object.
+ * @isci_device,: This parameter points to the isci_remote_device object
+ * @isci_device: This parameter specifies the new quiesce state.
+ *
+ */
+void isci_device_set_host_quiesce_lock_state(
+ struct isci_remote_device *isci_device,
+ bool lock_state)
+{
+ unsigned long flags;
+
+ dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
+ "%s: isci_device=%p, lock_state=%d\n",
+ __func__, isci_device, lock_state);
+
+ spin_lock_irqsave(&isci_device->host_quiesce_lock, flags);
+ isci_device->host_quiesce = lock_state;
+ spin_unlock_irqrestore(&isci_device->host_quiesce_lock, flags);
+}
+
+/**
+ * isci_remote_device_ready() - This function is called by the scic when the
+ * remote device is ready. We mark the isci device as ready and signal the
+ * waiting proccess.
+ * @isci_host: This parameter specifies the isci host object.
+ * @isci_device: This parameter specifies the remote device
+ *
+ */
+void isci_remote_device_ready(struct isci_remote_device *isci_device)
+{
+ unsigned long flags;
+
+ dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
+ "%s: isci_device = %p\n", __func__, isci_device);
+
+ /* device ready is actually a "ready for io" state. */
+ if ((isci_starting == isci_remote_device_get_state(isci_device)) ||
+ (isci_ready == isci_remote_device_get_state(isci_device))) {
+ spin_lock_irqsave(&isci_device->isci_port->remote_device_lock,
+ flags);
+ isci_remote_device_change_state(isci_device, isci_ready_for_io);
+ if (isci_device->completion)
+ complete(isci_device->completion);
+ spin_unlock_irqrestore(
+ &isci_device->isci_port->remote_device_lock,
+ flags);
+ }
+
+}
+
+/**
+ * isci_remote_device_not_ready() - This function is called by the scic when
+ * the remote device is not ready. We mark the isci device as ready (not
+ * "ready_for_io") and signal the waiting proccess.
+ * @isci_host: This parameter specifies the isci host object.
+ * @isci_device: This parameter specifies the remote device
+ *
+ */
+void isci_remote_device_not_ready(
+ struct isci_remote_device *isci_device,
+ u32 reason_code)
+{
+ dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
+ "%s: isci_device = %p\n", __func__, isci_device);
+
+ if (reason_code == SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED)
+ isci_remote_device_change_state(isci_device, isci_stopping);
+ else
+ /* device ready is actually a "not ready for io" state. */
+ isci_remote_device_change_state(isci_device, isci_ready);
+}
+
+/**
+ * isci_remote_device_stop_complete() - This function is called by the scic
+ * when the remote device stop has completed. We mark the isci device as not
+ * ready and remove the isci remote device.
+ * @isci_host: This parameter specifies the isci host object.
+ * @isci_device: This parameter specifies the remote device.
+ * @status: This parameter specifies status of the completion.
+ *
+ */
+void isci_remote_device_stop_complete(
+ struct isci_host *isci_host,
+ struct isci_remote_device *isci_device,
+ enum sci_status status)
+{
+ struct completion *completion = isci_device->completion;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: complete isci_device = %p, status = 0x%x\n",
+ __func__,
+ isci_device,
+ status);
+
+ isci_remote_device_change_state(isci_device, isci_stopped);
+
+ /* after stop, we can tear down resources. */
+ isci_remote_device_deconstruct(isci_host, isci_device);
+
+ /* notify interested parties. */
+ if (completion)
+ complete(completion);
+}
+
+/**
+ * isci_remote_device_start_complete() - This function is called by the scic
+ * when the remote device start has completed
+ * @isci_host: This parameter specifies the isci host object.
+ * @isci_device: This parameter specifies the remote device.
+ * @status: This parameter specifies status of the completion.
+ *
+ */
+void isci_remote_device_start_complete(
+ struct isci_host *isci_host,
+ struct isci_remote_device *isci_device,
+ enum sci_status status)
+{
+
+
+}
+
+
+/**
+ * isci_remote_device_stop() - This function is called internally to stop the
+ * remote device.
+ * @isci_host: This parameter specifies the isci host object.
+ * @isci_device: This parameter specifies the remote device.
+ *
+ * The status of the scic request to stop.
+ */
+enum sci_status isci_remote_device_stop(
+ struct isci_remote_device *isci_device)
+{
+ enum sci_status status;
+ unsigned long flags;
+
+ DECLARE_COMPLETION_ONSTACK(completion);
+
+ dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
+ "%s: isci_device = %p\n", __func__, isci_device);
+
+ isci_remote_device_change_state(isci_device, isci_stopping);
+
+ /* We need comfirmation that stop completed. */
+ isci_device->completion = &completion;
+
+ BUG_ON(isci_device->isci_port == NULL);
+ BUG_ON(isci_device->isci_port->isci_host == NULL);
+
+ spin_lock_irqsave(&isci_device->isci_port->isci_host->scic_lock, flags);
+
+ status = scic_remote_device_stop(
+ isci_device->sci_device_handle,
+ 50
+ );
+
+ spin_unlock_irqrestore(&isci_device->isci_port->isci_host->scic_lock, flags);
+
+ /* Wait for the stop complete callback. */
+ if (status == SCI_SUCCESS)
+ wait_for_completion(&completion);
+
+ dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
+ "%s: isci_device = %p - after completion wait\n",
+ __func__, isci_device);
+
+ isci_device->completion = NULL;
+ return status;
+}
+
+/**
+ * isci_remote_device_gone() - This function is called by libsas when a domain
+ * device is removed.
+ * @domain_device: This parameter specifies the libsas domain device.
+ *
+ */
+void isci_remote_device_gone(
+ struct domain_device *domain_dev)
+{
+ struct isci_remote_device *isci_device = isci_dev_from_domain_dev(
+ domain_dev);
+
+ dev_err(&isci_device->isci_port->isci_host->pdev->dev,
+ "%s: domain_device = %p, isci_device = %p, isci_port = %p\n",
+ __func__, domain_dev, isci_device, isci_device->isci_port);
+
+ if (isci_device != NULL)
+ isci_remote_device_stop(isci_device);
+}
+
+
+/**
+ * isci_remote_device_found() - This function is called by libsas when a remote
+ * device is discovered. A remote device object is created and started. the
+ * function then sleeps until the sci core device started message is
+ * received.
+ * @domain_device: This parameter specifies the libsas domain device.
+ *
+ * status, zero indicates success.
+ */
+int isci_remote_device_found(struct domain_device *domain_dev)
+{
+ unsigned long flags;
+ struct isci_host *isci_host;
+ struct isci_port *isci_port;
+ struct isci_phy *isci_phy;
+ struct asd_sas_port *sas_port;
+ struct asd_sas_phy *sas_phy;
+ struct isci_remote_device *isci_device;
+ enum sci_status status;
+ DECLARE_COMPLETION_ONSTACK(completion);
+
+ isci_host = isci_host_from_sas_ha(domain_dev->port->ha);
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: domain_device = %p\n", __func__, domain_dev);
+
+ sas_port = domain_dev->port;
+ sas_phy = list_first_entry(&sas_port->phy_list, struct asd_sas_phy,
+ port_phy_el);
+ isci_phy = to_isci_phy(sas_phy);
+ isci_port = isci_phy->isci_port;
+
+ /* we are being called for a device on this port,
+ * so it has to come up eventually
+ */
+ wait_for_completion(&isci_port->start_complete);
+
+ if ((isci_stopping == isci_port_get_state(isci_port)) ||
+ (isci_stopped == isci_port_get_state(isci_port)))
+ return -ENODEV;
+
+ isci_device = isci_remote_device_alloc(isci_host, isci_port);
+
+ INIT_LIST_HEAD(&isci_device->node);
+ domain_dev->lldd_dev = isci_device;
+ isci_device->domain_dev = domain_dev;
+ isci_device->isci_port = isci_port;
+ isci_remote_device_change_state(isci_device, isci_starting);
+
+
+ spin_lock_irqsave(&isci_port->remote_device_lock, flags);
+ list_add_tail(&isci_device->node, &isci_port->remote_dev_list);
+
+ /* for the device ready event. */
+ isci_device->completion = &completion;
+
+ status = isci_remote_device_construct(isci_port, isci_device);
+
+ spin_unlock_irqrestore(&isci_port->remote_device_lock, flags);
+
+ /* wait for the device ready callback. */
+ wait_for_completion(isci_device->completion);
+ isci_device->completion = NULL;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_device = %p\n",
+ __func__, isci_device);
+
+ if (status != SCI_SUCCESS) {
+
+ spin_lock_irqsave(&isci_port->remote_device_lock, flags);
+ isci_remote_device_deconstruct(
+ isci_host,
+ isci_device
+ );
+ spin_unlock_irqrestore(&isci_port->remote_device_lock, flags);
+ return -ENODEV;
+ }
+
+ wait_for_completion(&isci_host->start_complete);
+
+ return 0;
+}
+/**
+ * isci_device_is_reset_pending() - This function will check if there is any
+ * pending reset condition on the device.
+ * @request: This parameter is the isci_device object.
+ *
+ * true if there is a reset pending for the device.
+ */
+bool isci_device_is_reset_pending(
+ struct isci_host *isci_host,
+ struct isci_remote_device *isci_device)
+{
+ struct isci_request *isci_request;
+ struct isci_request *tmp_req;
+ bool reset_is_pending = false;
+ unsigned long flags;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_device = %p\n", __func__, isci_device);
+
+ spin_lock_irqsave(&isci_host->scic_lock, flags);
+
+ /* Check for reset on all pending requests. */
+ list_for_each_entry_safe(isci_request, tmp_req,
+ &isci_device->reqs_in_process, dev_node) {
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_device = %p request = %p\n",
+ __func__, isci_device, isci_request);
+
+ if (isci_request->ttype == io_task) {
+
+ unsigned long flags;
+ struct sas_task *task = isci_request_access_task(
+ isci_request);
+
+ spin_lock_irqsave(&task->task_state_lock, flags);
+ if (task->task_state_flags & SAS_TASK_NEED_DEV_RESET)
+ reset_is_pending = true;
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+ }
+ }
+
+ spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_device = %p reset_is_pending = %d\n",
+ __func__, isci_device, reset_is_pending);
+
+ return reset_is_pending;
+}
+
+/**
+ * isci_device_clear_reset_pending() - This function will clear if any pending
+ * reset condition flags on the device.
+ * @request: This parameter is the isci_device object.
+ *
+ * true if there is a reset pending for the device.
+ */
+void isci_device_clear_reset_pending(struct isci_remote_device *isci_device)
+{
+ struct isci_request *isci_request;
+ struct isci_request *tmp_req;
+ struct isci_host *isci_host = NULL;
+ unsigned long flags = 0;
+
+ /* FIXME more port gone confusion, and this time it makes the
+ * locking "fun"
+ */
+ if (isci_device->isci_port != NULL)
+ isci_host = isci_device->isci_port->isci_host;
+
+ /*
+ * FIXME when the isci_host gets sorted out
+ * use dev_dbg()
+ */
+ pr_debug("%s: isci_device=%p, isci_host=%p\n",
+ __func__, isci_device, isci_host);
+
+ if (isci_host != NULL)
+ spin_lock_irqsave(&isci_host->scic_lock, flags);
+ else
+ pr_err("%s: isci_device %p; isci_host == NULL!\n",
+ __func__, isci_device);
+
+ /* Clear reset pending on all pending requests. */
+ list_for_each_entry_safe(isci_request, tmp_req,
+ &isci_device->reqs_in_process, dev_node) {
+ /*
+ * FIXME when the conditional spinlock is gone
+ * change to dev_dbg()
+ */
+ pr_debug("%s: isci_device = %p request = %p\n",
+ __func__, isci_device, isci_request);
+
+ if (isci_request->ttype == io_task) {
+
+ unsigned long flags2;
+ struct sas_task *task = isci_request_access_task(
+ isci_request);
+
+ spin_lock_irqsave(&task->task_state_lock, flags2);
+ task->task_state_flags &= ~SAS_TASK_NEED_DEV_RESET;
+ spin_unlock_irqrestore(&task->task_state_lock, flags2);
+ }
+ }
+
+ if (isci_host != NULL)
+ spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+}
+
+/**
+ * isci_remote_device_change_state() - 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.
+ */
+void isci_remote_device_change_state(
+ struct isci_remote_device *isci_device,
+ enum isci_status status)
+{
+ unsigned long flags;
+
+ dev_dbg(&isci_device->isci_port->isci_host->pdev->dev,
+ "%s: isci_device = %p, state = 0x%x",
+ __func__,
+ isci_device,
+ status);
+
+ spin_lock_irqsave(&isci_device->state_lock, flags);
+ isci_device->status = status;
+ spin_unlock_irqrestore(&isci_device->state_lock, flags);
+}
diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h
new file mode 100644
index 0000000..a208f81
--- /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_) */
+
--
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