Controller state machines and hardware interface.
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
drivers/scsi/isci/core/sci_base_controller.h | 306 ++
drivers/scsi/isci/core/sci_controller.h | 98 +
drivers/scsi/isci/core/sci_controller_constants.h | 215 +
drivers/scsi/isci/core/scic_controller.h | 495 +++
drivers/scsi/isci/core/scic_sds_controller.c | 3804 ++++++++++++++++++++
drivers/scsi/isci/core/scic_sds_controller.h | 722 ++++
.../scsi/isci/core/scic_sds_controller_registers.h | 463 ++
7 files changed, 6103 insertions(+), 0 deletions(-)
create mode 100644 drivers/scsi/isci/core/sci_base_controller.h
create mode 100644 drivers/scsi/isci/core/sci_controller.h
create mode 100644 drivers/scsi/isci/core/sci_controller_constants.h
create mode 100644 drivers/scsi/isci/core/scic_controller.h
create mode 100644 drivers/scsi/isci/core/scic_sds_controller.c
create mode 100644 drivers/scsi/isci/core/scic_sds_controller.h
create mode 100644 drivers/scsi/isci/core/scic_sds_controller_registers.h
diff --git a/drivers/scsi/isci/core/sci_base_controller.h b/drivers/scsi/isci/core/sci_base_controller.h
new file mode 100644
index 0000000..36c5340
--- /dev/null
+++ b/drivers/scsi/isci/core/sci_base_controller.h
@@ -0,0 +1,306 @@
+/*
+ * 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.
+ */
+
+#ifndef _SCI_BASE_CONTROLLER_H_
+#define _SCI_BASE_CONTROLLER_H_
+
+#include "intel_sas.h"
+#include "sci_controller_constants.h"
+#include "sci_base_state.h"
+#include "sci_base_memory_descriptor_list.h"
+#include "sci_base_state_machine.h"
+#include "sci_object.h"
+
+struct sci_base_memory_descriptor_list;
+
+/**
+ * enum sci_base_controller_states - This enumeration depicts all the states
+ * for the common controller state machine.
+ *
+ *
+ */
+enum sci_base_controller_states {
+ /**
+ * Simply the initial state for the base controller state machine.
+ */
+ SCI_BASE_CONTROLLER_STATE_INITIAL = 0,
+
+ /**
+ * This state indicates that the controller is reset. The memory for
+ * the controller is in it's initial state, but the controller requires
+ * initialization.
+ * This state is entered from the INITIAL state.
+ * This state is entered from the RESETTING state.
+ */
+ SCI_BASE_CONTROLLER_STATE_RESET,
+
+ /**
+ * This state is typically an action state that indicates the controller
+ * is in the process of initialization. In this state no new IO operations
+ * are permitted.
+ * This state is entered from the RESET state.
+ */
+ SCI_BASE_CONTROLLER_STATE_INITIALIZING,
+
+ /**
+ * This state indicates that the controller has been successfully
+ * initialized. In this state no new IO operations are permitted.
+ * This state is entered from the INITIALIZING state.
+ */
+ SCI_BASE_CONTROLLER_STATE_INITIALIZED,
+
+ /**
+ * This state indicates the the controller is in the process of becoming
+ * ready (i.e. starting). In this state no new IO operations are permitted.
+ * This state is entered from the INITIALIZED state.
+ */
+ SCI_BASE_CONTROLLER_STATE_STARTING,
+
+ /**
+ * This state indicates the controller is now ready. Thus, the user
+ * is able to perform IO operations on the controller.
+ * This state is entered from the STARTING state.
+ */
+ SCI_BASE_CONTROLLER_STATE_READY,
+
+ /**
+ * This state is typically an action state that indicates the controller
+ * is in the process of resetting. Thus, the user is unable to perform
+ * IO operations on the controller. A reset is considered destructive in
+ * most cases.
+ * This state is entered from the READY state.
+ * This state is entered from the FAILED state.
+ * This state is entered from the STOPPED state.
+ */
+ SCI_BASE_CONTROLLER_STATE_RESETTING,
+
+ /**
+ * This state indicates that the controller is in the process of stopping.
+ * In this state no new IO operations are permitted, but existing IO
+ * operations are allowed to complete.
+ * This state is entered from the READY state.
+ */
+ SCI_BASE_CONTROLLER_STATE_STOPPING,
+
+ /**
+ * This state indicates that the controller has successfully been stopped.
+ * In this state no new IO operations are permitted.
+ * This state is entered from the STOPPING state.
+ */
+ SCI_BASE_CONTROLLER_STATE_STOPPED,
+
+ /**
+ * This state indicates that the controller could not successfully be
+ * initialized. In this state no new IO operations are permitted.
+ * This state is entered from the INITIALIZING state.
+ * This state is entered from the STARTING state.
+ * This state is entered from the STOPPING state.
+ * This state is entered from the RESETTING state.
+ */
+ SCI_BASE_CONTROLLER_STATE_FAILED,
+
+ SCI_BASE_CONTROLLER_MAX_STATES
+
+};
+
+/**
+ * struct sci_base_controller - The base controller object abstracts the fields
+ * common to all SCI controller objects.
+ *
+ *
+ */
+struct sci_base_controller {
+ /**
+ * The field specifies that the parent object for the base controller
+ * is the base object itself.
+ */
+ struct sci_base_object parent;
+
+ /**
+ * This field points to the memory descriptor list associated with this
+ * controller. The MDL indicates the memory requirements necessary for
+ * this controller object.
+ */
+ struct sci_base_memory_descriptor_list mdl;
+
+ /**
+ * This field contains the information for the base controller state
+ * machine.
+ */
+ struct sci_base_state_machine state_machine;
+};
+
+/* Forward declarations */
+struct sci_base_remote_device;
+struct sci_base_request;
+
+typedef enum sci_status
+(*sci_base_controller_handler_t)(struct sci_base_controller *);
+
+typedef enum sci_status
+(*sci_base_controller_timed_handler_t)(struct sci_base_controller *, u32);
+
+typedef enum sci_status
+(*sci_base_controller_request_handler_t)(struct sci_base_controller *,
+ struct sci_base_remote_device *,
+ struct sci_base_request *);
+
+typedef enum sci_status
+(*sci_base_controller_start_request_handler_t)(struct sci_base_controller *,
+ struct sci_base_remote_device *,
+ struct sci_base_request *, u16);
+
+/**
+ * struct sci_base_controller_state_handler - This structure contains all of
+ * the state handler methods common to base controller state machines.
+ * Handler methods provide the ability to change the behavior for user
+ * requests or transitions depending on the state the machine is in.
+ *
+ *
+ */
+struct sci_base_controller_state_handler {
+ /**
+ * The start_handler specifies the method invoked when a user attempts to
+ * start a controller.
+ */
+ sci_base_controller_timed_handler_t start;
+
+ /**
+ * The stop_handler specifies the method invoked when a user attempts to
+ * stop a controller.
+ */
+ sci_base_controller_timed_handler_t stop;
+
+ /**
+ * The reset_handler specifies the method invoked when a user attempts to
+ * reset a controller.
+ */
+ sci_base_controller_handler_t reset;
+
+ /**
+ * The initialize_handler specifies the method invoked when a user
+ * attempts to initialize a controller.
+ */
+ sci_base_controller_handler_t initialize;
+
+ /**
+ * The start_io_handler specifies the method invoked when a user
+ * attempts to start an IO request for a controller.
+ */
+ sci_base_controller_start_request_handler_t start_io;
+
+ /**
+ * The complete_io_handler specifies the method invoked when a user
+ * attempts to complete an IO request for a controller.
+ */
+ sci_base_controller_request_handler_t complete_io;
+
+ /**
+ * The continue_io_handler specifies the method invoked when a user
+ * attempts to continue an IO request for a controller.
+ */
+ sci_base_controller_request_handler_t continue_io;
+
+ /**
+ * The start_task_handler specifies the method invoked when a user
+ * attempts to start a task management request for a controller.
+ */
+ sci_base_controller_start_request_handler_t start_task;
+
+ /**
+ * The complete_task_handler specifies the method invoked when a user
+ * attempts to complete a task management request for a controller.
+ */
+ sci_base_controller_request_handler_t complete_task;
+
+};
+
+/**
+ * sci_base_controller_construct() - Construct the base controller
+ * @this_controller: This parameter specifies the base controller to be
+ * constructed.
+ * @state_table: This parameter specifies the table of state definitions to be
+ * utilized for the controller state machine.
+ * @mde_array: This parameter specifies the array of memory descriptor entries
+ * to be managed by this list.
+ * @mde_array_length: This parameter specifies the size of the array of entries.
+ * @next_mdl: This parameter specifies a subsequent MDL object to be managed by
+ * this MDL object.
+ * @oem_parameters: This parameter specifies the original equipment
+ * manufacturer parameters to be utilized by this controller object.
+ *
+ */
+static inline void sci_base_controller_construct(
+ struct sci_base_controller *scic_base,
+ const struct sci_base_state *state_table,
+ struct sci_physical_memory_descriptor *mdes,
+ u32 mde_count,
+ struct sci_base_memory_descriptor_list *next_mdl)
+{
+ scic_base->parent.private = NULL;
+
+ sci_base_state_machine_construct(
+ &scic_base->state_machine,
+ &scic_base->parent,
+ state_table,
+ SCI_BASE_CONTROLLER_STATE_INITIAL
+ );
+
+ sci_base_mdl_construct(&scic_base->mdl, mdes, mde_count, next_mdl);
+
+ sci_base_state_machine_start(&scic_base->state_machine);
+}
+
+#endif /* _SCI_BASE_CONTROLLER_H_ */
diff --git a/drivers/scsi/isci/core/sci_controller.h b/drivers/scsi/isci/core/sci_controller.h
new file mode 100644
index 0000000..5c7774e
--- /dev/null
+++ b/drivers/scsi/isci/core/sci_controller.h
@@ -0,0 +1,98 @@
+/*
+ * 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.
+ */
+
+#ifndef _SCI_CONTROLLER_H_
+#define _SCI_CONTROLLER_H_
+
+/**
+ * This file contains all of the interface methods that can be called by an SCI
+ * user on all SCI controller objects.
+ *
+ *
+ */
+
+
+struct sci_base_memory_descriptor_list;
+struct scic_sds_controller;
+
+#define SCI_CONTROLLER_INVALID_IO_TAG 0xFFFF
+
+/**
+ * sci_controller_get_memory_descriptor_list_handle() - This method simply
+ * returns a handle for the memory descriptor list associated with the
+ * supplied controller. The descriptor list provides DMA safe/capable
+ * memory requirements for this controller.
+ * @controller: This parameter specifies the controller for which to retrieve
+ * the DMA safe memory descriptor list.
+ *
+ * The user must adhere to the alignment requirements specified in memory
+ * descriptor. In situations where the operating environment does not offer
+ * memory allocation utilities supporting alignment, then it is the
+ * responsibility of the user to manually align the memory buffer for SCI.
+ * Thus, the user may have to allocate a larger buffer to meet the alignment.
+ * Additionally, the user will need to remember the actual memory allocation
+ * addresses in order to ensure the memory can be properly freed when necessary
+ * to do so. This method will return a valid handle, but the MDL may not be
+ * accurate until after the user has invoked the associated
+ * sci_controller_initialize() routine. A pointer to a physical memory
+ * descriptor array.
+ */
+struct sci_base_memory_descriptor_list *
+ sci_controller_get_memory_descriptor_list_handle(
+ struct scic_sds_controller *controller);
+
+
+#endif /* _SCI_CONTROLLER_H_ */
+
diff --git a/drivers/scsi/isci/core/sci_controller_constants.h b/drivers/scsi/isci/core/sci_controller_constants.h
new file mode 100644
index 0000000..06c34c7
--- /dev/null
+++ b/drivers/scsi/isci/core/sci_controller_constants.h
@@ -0,0 +1,215 @@
+/*
+ * 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.
+ */
+
+#ifndef _SCI_CONTROLLER_CONSTANTS_H_
+#define _SCI_CONTROLLER_CONSTANTS_H_
+
+/**
+ * This file contains constant values that change based on the type of core or
+ * framework being managed. These constants are exported in order to
+ * provide the user with information as to the bounds (i.e. how many) of
+ * specific objects.
+ *
+ *
+ */
+
+
+#ifdef SCIC_SDS_4_ENABLED
+
+#ifndef SCI_MAX_PHYS
+/**
+ *
+ *
+ * This constant defines the maximum number of phy objects that can be
+ * supported for the SCU Driver Standard (SDS) library. This is tied directly
+ * to silicon capabilities.
+ */
+#define SCI_MAX_PHYS (4)
+#endif
+
+#ifndef SCI_MAX_PORTS
+/**
+ *
+ *
+ * This constant defines the maximum number of port objects that can be
+ * supported for the SCU Driver Standard (SDS) library. This is tied directly
+ * to silicon capabilities.
+ */
+#define SCI_MAX_PORTS SCI_MAX_PHYS
+#endif
+
+#ifndef SCI_MIN_SMP_PHYS
+/**
+ *
+ *
+ * This constant defines the minimum number of SMP phy objects that can be
+ * supported for a single expander level. This was determined by using 36
+ * physical phys and room for 2 virtual phys.
+ */
+#define SCI_MIN_SMP_PHYS (38)
+#endif
+
+#ifndef SCI_MAX_SMP_PHYS
+/**
+ *
+ *
+ * This constant defines the maximum number of SMP phy objects that can be
+ * supported for the SCU Driver Standard (SDS) library. This number can be
+ * increased if required.
+ */
+#define SCI_MAX_SMP_PHYS (384)
+#endif
+
+#ifndef SCI_MAX_REMOTE_DEVICES
+/**
+ *
+ *
+ * This constant defines the maximum number of remote device objects that can
+ * be supported for the SCU Driver Standard (SDS) library. This is tied
+ * directly to silicon capabilities.
+ */
+#define SCI_MAX_REMOTE_DEVICES (256)
+#endif
+
+#ifndef SCI_MIN_REMOTE_DEVICES
+/**
+ *
+ *
+ * This constant defines the minimum number of remote device objects that can
+ * be supported for the SCU Driver Standard (SDS) library. This # can be
+ * configured for minimum memory environments to any value less than
+ * SCI_MAX_REMOTE_DEVICES
+ */
+#define SCI_MIN_REMOTE_DEVICES (16)
+#endif
+
+#ifndef SCI_MAX_IO_REQUESTS
+/**
+ *
+ *
+ * This constant defines the maximum number of IO request objects that can be
+ * supported for the SCU Driver Standard (SDS) library. This is tied directly
+ * to silicon capabilities.
+ */
+#define SCI_MAX_IO_REQUESTS (256)
+#endif
+
+#ifndef SCI_MIN_IO_REQUESTS
+/**
+ *
+ *
+ * This constant defines the minimum number of IO request objects that can be
+ * supported for the SCU Driver Standard (SDS) library. This # can be
+ * configured for minimum memory environments to any value less than
+ * SCI_MAX_IO_REQUESTS.
+ */
+#define SCI_MIN_IO_REQUESTS (1)
+#endif
+
+#ifndef SCI_MAX_MSIX_MESSAGES
+/**
+ *
+ *
+ * This constant defines the maximum number of MSI-X interrupt vectors/messages
+ * supported for an SCU hardware controller instance.
+ */
+#define SCI_MAX_MSIX_MESSAGES (2)
+#endif
+
+#ifndef SCI_MAX_SCATTER_GATHER_ELEMENTS
+/**
+ *
+ *
+ * This constant defines the maximum number of Scatter-Gather Elements to be
+ * used by any SCI component.
+ */
+#define SCI_MAX_SCATTER_GATHER_ELEMENTS 130
+#endif
+
+#ifndef SCI_MIN_SCATTER_GATHER_ELEMENTS
+/**
+ *
+ *
+ * This constant defines the minimum number of Scatter-Gather Elements to be
+ * used by any SCI component.
+ */
+#define SCI_MIN_SCATTER_GATHER_ELEMENTS 1
+#endif
+
+#else /* SCIC_SDS_4_ENABLED */
+
+#error "SCI Core configuration left unspecified (e.g. SCIC_SDS_4_ENABLED)"
+
+#endif /* SCIC_SDS_4_ENABLED */
+
+/**
+ *
+ *
+ * This constant defines the maximum number of controllers that can occur in a
+ * single silicon package.
+ */
+#define SCI_MAX_CONTROLLERS 2
+
+/**
+ *
+ *
+ * The maximum number of supported domain objects is currently tied to the
+ * maximum number of support port objects.
+ */
+#define SCI_MAX_DOMAINS SCI_MAX_PORTS
+
+
+#endif /* _SCI_CONTROLLER_CONSTANTS_H_ */
+
diff --git a/drivers/scsi/isci/core/scic_controller.h b/drivers/scsi/isci/core/scic_controller.h
new file mode 100644
index 0000000..481e0de
--- /dev/null
+++ b/drivers/scsi/isci/core/scic_controller.h
@@ -0,0 +1,495 @@
+/*
+ * 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.
+ */
+
+#ifndef _SCIC_CONTROLLER_H_
+#define _SCIC_CONTROLLER_H_
+
+/**
+ * This file contains all of the interface methods that can be called by an
+ * SCIC user on a controller object.
+ *
+ *
+ */
+
+
+#include "sci_status.h"
+#include "sci_controller.h"
+#include "scic_config_parameters.h"
+
+struct scic_sds_request;
+struct scic_sds_phy;
+struct scic_sds_port;
+struct scic_sds_remote_device;
+
+
+enum sci_controller_mode {
+ SCI_MODE_SPEED, /* Optimized for performance */
+ SCI_MODE_SIZE /* Optimized for memory use */
+};
+
+
+/**
+ * scic_controller_construct() - This method will attempt to construct a
+ * controller object utilizing the supplied parameter information.
+ * @c: This parameter specifies the controller to be constructed.
+ * @scu_base: mapped base address of the scu registers
+ * @smu_base: mapped base address of the smu registers
+ *
+ * Indicate if the controller was successfully constructed or if it failed in
+ * some way. SCI_SUCCESS This value is returned if the controller was
+ * successfully constructed. SCI_WARNING_TIMER_CONFLICT This value is returned
+ * if the interrupt coalescence timer may cause SAS compliance issues for SMP
+ * Target mode response processing. SCI_FAILURE_UNSUPPORTED_CONTROLLER_TYPE
+ * This value is returned if the controller does not support the supplied type.
+ * SCI_FAILURE_UNSUPPORTED_INIT_DATA_VERSION This value is returned if the
+ * controller does not support the supplied initialization data version.
+ */
+enum sci_status scic_controller_construct(struct scic_sds_controller *c,
+ void __iomem *scu_base,
+ void __iomem *smu_base);
+
+/**
+ * scic_controller_enable_interrupts() - This method will enable all controller
+ * interrupts.
+ * @controller: This parameter specifies the controller for which to enable
+ * interrupts.
+ *
+ */
+void scic_controller_enable_interrupts(
+ struct scic_sds_controller *controller);
+
+/**
+ * scic_controller_disable_interrupts() - This method will disable all
+ * controller interrupts.
+ * @controller: This parameter specifies the controller for which to disable
+ * interrupts.
+ *
+ */
+void scic_controller_disable_interrupts(
+ struct scic_sds_controller *controller);
+
+
+/**
+ * scic_controller_initialize() - This method will initialize the controller
+ * hardware managed by the supplied core controller object. This method
+ * will bring the physical controller hardware out of reset and enable the
+ * core to determine the capabilities of the hardware being managed. Thus,
+ * the core controller can determine it's exact physical (DMA capable)
+ * memory requirements.
+ * @controller: This parameter specifies the controller to be initialized.
+ *
+ * The SCI Core user must have called scic_controller_construct() on the
+ * supplied controller object previously. Indicate if the controller was
+ * successfully initialized or if it failed in some way. SCI_SUCCESS This value
+ * is returned if the controller hardware was successfully initialized.
+ */
+enum sci_status scic_controller_initialize(
+ struct scic_sds_controller *controller);
+
+/**
+ * scic_controller_get_suggested_start_timeout() - This method returns the
+ * suggested scic_controller_start() timeout amount. The user is free to
+ * use any timeout value, but this method provides the suggested minimum
+ * start timeout value. The returned value is based upon empirical
+ * information determined as a result of interoperability testing.
+ * @controller: the handle to the controller object for which to return the
+ * suggested start timeout.
+ *
+ * This method returns the number of milliseconds for the suggested start
+ * operation timeout.
+ */
+u32 scic_controller_get_suggested_start_timeout(
+ struct scic_sds_controller *controller);
+
+/**
+ * scic_controller_start() - This method will start the supplied core
+ * controller. This method will start the staggered spin up operation. The
+ * SCI User completion callback is called when the following conditions are
+ * met: -# the return status of this method is SCI_SUCCESS. -# after all of
+ * the phys have successfully started or been given the opportunity to start.
+ * @controller: the handle to the controller object to start.
+ * @timeout: This parameter specifies the number of milliseconds in which the
+ * start operation should complete.
+ *
+ * The SCI Core user must have filled in the physical memory descriptor
+ * structure via the sci_controller_get_memory_descriptor_list() method. The
+ * SCI Core user must have invoked the scic_controller_initialize() method
+ * prior to invoking this method. The controller must be in the INITIALIZED or
+ * STARTED state. Indicate if the controller start method succeeded or failed
+ * in some way. SCI_SUCCESS if the start operation succeeded.
+ * SCI_WARNING_ALREADY_IN_STATE if the controller is already in the STARTED
+ * state. SCI_FAILURE_INVALID_STATE if the controller is not either in the
+ * INITIALIZED or STARTED states. SCI_FAILURE_INVALID_MEMORY_DESCRIPTOR if
+ * there are inconsistent or invalid values in the supplied
+ * struct sci_physical_memory_descriptor array.
+ */
+enum sci_status scic_controller_start(
+ struct scic_sds_controller *controller,
+ u32 timeout);
+
+/**
+ * scic_controller_stop() - This method will stop an individual controller
+ * object.This method will invoke the associated user callback upon
+ * completion. The completion callback is called when the following
+ * conditions are met: -# the method return status is SCI_SUCCESS. -# the
+ * controller has been quiesced. This method will ensure that all IO
+ * requests are quiesced, phys are stopped, and all additional operation by
+ * the hardware is halted.
+ * @controller: the handle to the controller object to stop.
+ * @timeout: This parameter specifies the number of milliseconds in which the
+ * stop operation should complete.
+ *
+ * The controller must be in the STARTED or STOPPED state. Indicate if the
+ * controller stop method succeeded or failed in some way. SCI_SUCCESS if the
+ * stop operation successfully began. SCI_WARNING_ALREADY_IN_STATE if the
+ * controller is already in the STOPPED state. SCI_FAILURE_INVALID_STATE if the
+ * controller is not either in the STARTED or STOPPED states.
+ */
+enum sci_status scic_controller_stop(
+ struct scic_sds_controller *controller,
+ u32 timeout);
+
+/**
+ * scic_controller_reset() - This method will reset the supplied core
+ * controller regardless of the state of said controller. This operation is
+ * considered destructive. In other words, all current operations are wiped
+ * out. No IO completions for outstanding devices occur. Outstanding IO
+ * requests are not aborted or completed at the actual remote device.
+ * @controller: the handle to the controller object to reset.
+ *
+ * Indicate if the controller reset method succeeded or failed in some way.
+ * SCI_SUCCESS if the reset operation successfully started. SCI_FATAL_ERROR if
+ * the controller reset operation is unable to complete.
+ */
+enum sci_status scic_controller_reset(
+ struct scic_sds_controller *controller);
+
+/**
+ * scic_controller_start_io() - This method is called by the SCI user to
+ * send/start an IO request. If the method invocation is successful, then
+ * the IO request has been queued to the hardware for processing.
+ * @controller: the handle to the controller object for which to start an IO
+ * request.
+ * @remote_device: the handle to the remote device object for which to start an
+ * IO request.
+ * @io_request: the handle to the io request object to start.
+ * @io_tag: This parameter specifies a previously allocated IO tag that the
+ * user desires to be utilized for this request. This parameter is optional.
+ * The user is allowed to supply SCI_CONTROLLER_INVALID_IO_TAG as the value
+ * for this parameter.
+ *
+ * - IO tags are a protected resource. It is incumbent upon the SCI Core user
+ * to ensure that each of the methods that may allocate or free available IO
+ * tags are handled in a mutually exclusive manner. This method is one of said
+ * methods requiring proper critical code section protection (e.g. semaphore,
+ * spin-lock, etc.). - For SATA, the user is required to manage NCQ tags. As a
+ * result, it is expected the user will have set the NCQ tag field in the host
+ * to device register FIS prior to calling this method. There is also a
+ * requirement for the user to call scic_stp_io_set_ncq_tag() prior to invoking
+ * the scic_controller_start_io() method. scic_controller_allocate_tag() for
+ * more information on allocating a tag. Indicate if the controller
+ * successfully started the IO request. SCI_IO_SUCCESS if the IO request was
+ * successfully started. Determine the failure situations and return values.
+ */
+enum sci_io_status scic_controller_start_io(
+ struct scic_sds_controller *controller,
+ struct scic_sds_remote_device *remote_device,
+ struct scic_sds_request *io_request,
+ u16 io_tag);
+
+
+/**
+ * scic_controller_start_task() - This method is called by the SCIC user to
+ * send/start a framework task management request.
+ * @controller: the handle to the controller object for which to start the task
+ * management request.
+ * @remote_device: the handle to the remote device object for which to start
+ * the task management request.
+ * @task_request: the handle to the task request object to start.
+ * @io_tag: This parameter specifies a previously allocated IO tag that the
+ * user desires to be utilized for this request. Note this not the io_tag
+ * of the request being managed. It is to be utilized for the task request
+ * itself. This parameter is optional. The user is allowed to supply
+ * SCI_CONTROLLER_INVALID_IO_TAG as the value for this parameter.
+ *
+ * - IO tags are a protected resource. It is incumbent upon the SCI Core user
+ * to ensure that each of the methods that may allocate or free available IO
+ * tags are handled in a mutually exclusive manner. This method is one of said
+ * methods requiring proper critical code section protection (e.g. semaphore,
+ * spin-lock, etc.). - The user must synchronize this task with completion
+ * queue processing. If they are not synchronized then it is possible for the
+ * io requests that are being managed by the task request can complete before
+ * starting the task request. scic_controller_allocate_tag() for more
+ * information on allocating a tag. Indicate if the controller successfully
+ * started the IO request. SCI_TASK_SUCCESS if the task request was
+ * successfully started. SCI_TASK_FAILURE_REQUIRES_SCSI_ABORT This value is
+ * returned if there is/are task(s) outstanding that require termination or
+ * completion before this request can succeed.
+ */
+enum sci_task_status scic_controller_start_task(
+ struct scic_sds_controller *controller,
+ struct scic_sds_remote_device *remote_device,
+ struct scic_sds_request *task_request,
+ u16 io_tag);
+
+/**
+ * scic_controller_complete_task() - This method will perform core specific
+ * completion operations for task management request. After this method is
+ * invoked, the user should consider the task request as invalid until it is
+ * properly reused (i.e. re-constructed).
+ * @controller: The handle to the controller object for which to complete the
+ * task management request.
+ * @remote_device: The handle to the remote device object for which to complete
+ * the task management request.
+ * @task_request: the handle to the task management request object to complete.
+ *
+ * Indicate if the controller successfully completed the task management
+ * request. SCI_SUCCESS if the completion process was successful.
+ */
+enum sci_status scic_controller_complete_task(
+ struct scic_sds_controller *controller,
+ struct scic_sds_remote_device *remote_device,
+ struct scic_sds_request *task_request);
+
+
+/**
+ * scic_controller_terminate_request() - This method is called by the SCI Core
+ * user to terminate an ongoing (i.e. started) core IO request. This does
+ * not abort the IO request at the target, but rather removes the IO request
+ * from the host controller.
+ * @controller: the handle to the controller object for which to terminate a
+ * request.
+ * @remote_device: the handle to the remote device object for which to
+ * terminate a request.
+ * @request: the handle to the io or task management request object to
+ * terminate.
+ *
+ * Indicate if the controller successfully began the terminate process for the
+ * IO request. SCI_SUCCESS if the terminate process was successfully started
+ * for the request. Determine the failure situations and return values.
+ */
+enum sci_status scic_controller_terminate_request(
+ struct scic_sds_controller *controller,
+ struct scic_sds_remote_device *remote_device,
+ struct scic_sds_request *request);
+
+/**
+ * scic_controller_complete_io() - This method will perform core specific
+ * completion operations for an IO request. After this method is invoked,
+ * the user should consider the IO request as invalid until it is properly
+ * reused (i.e. re-constructed).
+ * @controller: The handle to the controller object for which to complete the
+ * IO request.
+ * @remote_device: The handle to the remote device object for which to complete
+ * the IO request.
+ * @io_request: the handle to the io request object to complete.
+ *
+ * - IO tags are a protected resource. It is incumbent upon the SCI Core user
+ * to ensure that each of the methods that may allocate or free available IO
+ * tags are handled in a mutually exclusive manner. This method is one of said
+ * methods requiring proper critical code section protection (e.g. semaphore,
+ * spin-lock, etc.). - If the IO tag for a request was allocated, by the SCI
+ * Core user, using the scic_controller_allocate_io_tag() method, then it is
+ * the responsibility of the caller to invoke the scic_controller_free_io_tag()
+ * method to free the tag (i.e. this method will not free the IO tag). Indicate
+ * if the controller successfully completed the IO request. SCI_SUCCESS if the
+ * completion process was successful.
+ */
+enum sci_status scic_controller_complete_io(
+ struct scic_sds_controller *controller,
+ struct scic_sds_remote_device *remote_device,
+ struct scic_sds_request *io_request);
+
+
+/**
+ * scic_controller_get_port_handle() - This method simply provides the user
+ * with a unique handle for a given SAS/SATA core port index.
+ * @controller: This parameter represents the handle to the controller object
+ * from which to retrieve a port (SAS or SATA) handle.
+ * @port_index: This parameter specifies the port index in the controller for
+ * which to retrieve the port handle. 0 <= port_index < maximum number of
+ * phys.
+ * @port_handle: This parameter specifies the retrieved port handle to be
+ * provided to the caller.
+ *
+ * Indicate if the retrieval of the port handle was successful. SCI_SUCCESS
+ * This value is returned if the retrieval was successful.
+ * SCI_FAILURE_INVALID_PORT This value is returned if the supplied port id is
+ * not in the supported range.
+ */
+enum sci_status scic_controller_get_port_handle(
+ struct scic_sds_controller *controller,
+ u8 port_index,
+ struct scic_sds_port **port_handle);
+
+/**
+ * scic_controller_get_phy_handle() - This method simply provides the user with
+ * a unique handle for a given SAS/SATA phy index/identifier.
+ * @controller: This parameter represents the handle to the controller object
+ * from which to retrieve a phy (SAS or SATA) handle.
+ * @phy_index: This parameter specifies the phy index in the controller for
+ * which to retrieve the phy handle. 0 <= phy_index < maximum number of phys.
+ * @phy_handle: This parameter specifies the retrieved phy handle to be
+ * provided to the caller.
+ *
+ * Indicate if the retrieval of the phy handle was successful. SCI_SUCCESS This
+ * value is returned if the retrieval was successful. SCI_FAILURE_INVALID_PHY
+ * This value is returned if the supplied phy id is not in the supported range.
+ */
+enum sci_status scic_controller_get_phy_handle(
+ struct scic_sds_controller *controller,
+ u8 phy_index,
+ struct scic_sds_phy **phy_handle);
+
+/**
+ * scic_controller_allocate_io_tag() - This method will allocate a tag from the
+ * pool of free IO tags. Direct allocation of IO tags by the SCI Core user
+ * is optional. The scic_controller_start_io() method will allocate an IO
+ * tag if this method is not utilized and the tag is not supplied to the IO
+ * construct routine. Direct allocation of IO tags may provide additional
+ * performance improvements in environments capable of supporting this usage
+ * model. Additionally, direct allocation of IO tags also provides
+ * additional flexibility to the SCI Core user. Specifically, the user may
+ * retain IO tags across the lives of multiple IO requests.
+ * @controller: the handle to the controller object for which to allocate the
+ * tag.
+ *
+ * IO tags are a protected resource. It is incumbent upon the SCI Core user to
+ * ensure that each of the methods that may allocate or free available IO tags
+ * are handled in a mutually exclusive manner. This method is one of said
+ * methods requiring proper critical code section protection (e.g. semaphore,
+ * spin-lock, etc.). An unsigned integer representing an available IO tag.
+ * SCI_CONTROLLER_INVALID_IO_TAG This value is returned if there are no
+ * currently available tags to be allocated. All return other values indicate a
+ * legitimate tag.
+ */
+u16 scic_controller_allocate_io_tag(
+ struct scic_sds_controller *controller);
+
+/**
+ * scic_controller_free_io_tag() - This method will free an IO tag to the pool
+ * of free IO tags. This method provides the SCI Core user more flexibility
+ * with regards to IO tags. The user may desire to keep an IO tag after an
+ * IO request has completed, because they plan on re-using the tag for a
+ * subsequent IO request. This method is only legal if the tag was
+ * allocated via scic_controller_allocate_io_tag().
+ * @controller: This parameter specifies the handle to the controller object
+ * for which to free/return the tag.
+ * @io_tag: This parameter represents the tag to be freed to the pool of
+ * available tags.
+ *
+ * - IO tags are a protected resource. It is incumbent upon the SCI Core user
+ * to ensure that each of the methods that may allocate or free available IO
+ * tags are handled in a mutually exclusive manner. This method is one of said
+ * methods requiring proper critical code section protection (e.g. semaphore,
+ * spin-lock, etc.). - If the IO tag for a request was allocated, by the SCI
+ * Core user, using the scic_controller_allocate_io_tag() method, then it is
+ * the responsibility of the caller to invoke this method to free the tag. This
+ * method returns an indication of whether the tag was successfully put back
+ * (freed) to the pool of available tags. SCI_SUCCESS This return value
+ * indicates the tag was successfully placed into the pool of available IO
+ * tags. SCI_FAILURE_INVALID_IO_TAG This value is returned if the supplied tag
+ * is not a valid IO tag value.
+ */
+enum sci_status scic_controller_free_io_tag(
+ struct scic_sds_controller *controller,
+ u16 io_tag);
+
+
+
+
+/**
+ * scic_controller_set_mode() - This method allows the user to configure the
+ * SCI core into either a performance mode or a memory savings mode.
+ * @controller: This parameter represents the handle to the controller object
+ * for which to update the operating mode.
+ * @mode: This parameter specifies the new mode for the controller.
+ *
+ * Indicate if the user successfully change the operating mode of the
+ * controller. SCI_SUCCESS The user successfully updated the mode.
+ */
+enum sci_status scic_controller_set_mode(
+ struct scic_sds_controller *controller,
+ enum sci_controller_mode mode);
+
+
+/**
+ * scic_controller_set_interrupt_coalescence() - This method allows the user to
+ * configure the interrupt coalescence.
+ * @controller: This parameter represents the handle to the controller object
+ * for which its interrupt coalesce register is overridden.
+ * @coalesce_number: Used to control the number of entries in the Completion
+ * Queue before an interrupt is generated. If the number of entries exceed
+ * this number, an interrupt will be generated. The valid range of the input
+ * is [0, 256]. A setting of 0 results in coalescing being disabled.
+ * @coalesce_timeout: Timeout value in microseconds. The valid range of the
+ * input is [0, 2700000] . A setting of 0 is allowed and results in no
+ * interrupt coalescing timeout.
+ *
+ * Indicate if the user successfully set the interrupt coalesce parameters.
+ * SCI_SUCCESS The user successfully updated the interrutp coalescence.
+ * SCI_FAILURE_INVALID_PARAMETER_VALUE The user input value is out of range.
+ */
+enum sci_status scic_controller_set_interrupt_coalescence(
+ struct scic_sds_controller *controller,
+ u32 coalesce_number,
+ u32 coalesce_timeout);
+
+struct device;
+struct scic_sds_controller *scic_controller_alloc(struct device *dev);
+
+
+#endif /* _SCIC_CONTROLLER_H_ */
+
diff --git a/drivers/scsi/isci/core/scic_sds_controller.c b/drivers/scsi/isci/core/scic_sds_controller.c
new file mode 100644
index 0000000..180bb1e
--- /dev/null
+++ b/drivers/scsi/isci/core/scic_sds_controller.c
@@ -0,0 +1,3804 @@
+/*
+ * 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 <linux/device.h>
+#include "scic_controller.h"
+#include "scic_phy.h"
+#include "scic_port.h"
+#include "scic_remote_device.h"
+#include "scic_sds_controller.h"
+#include "scic_sds_controller_registers.h"
+#include "scic_sds_pci.h"
+#include "scic_sds_phy.h"
+#include "scic_sds_port_configuration_agent.h"
+#include "scic_sds_port.h"
+#include "scic_sds_remote_device.h"
+#include "scic_sds_request.h"
+#include "sci_environment.h"
+#include "sci_util.h"
+#include "scu_completion_codes.h"
+#include "scu_constants.h"
+#include "scu_event_codes.h"
+#include "scu_remote_node_context.h"
+#include "scu_task_context.h"
+#include "scu_unsolicited_frame.h"
+
+#define SCU_CONTEXT_RAM_INIT_STALL_TIME 200
+
+/**
+ * smu_dcc_get_max_ports() -
+ *
+ * This macro returns the maximum number of logical ports supported by the
+ * hardware. The caller passes in the value read from the device context
+ * capacity register and this macro will mash and shift the value appropriately.
+ */
+#define smu_dcc_get_max_ports(dcc_value) \
+ (\
+ (((dcc_value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_MASK) \
+ >> SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_SHIFT) + 1 \
+ )
+
+/**
+ * smu_dcc_get_max_task_context() -
+ *
+ * This macro returns the maximum number of task contexts supported by the
+ * hardware. The caller passes in the value read from the device context
+ * capacity register and this macro will mash and shift the value appropriately.
+ */
+#define smu_dcc_get_max_task_context(dcc_value) \
+ (\
+ (((dcc_value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_TC_MASK) \
+ >> SMU_DEVICE_CONTEXT_CAPACITY_MAX_TC_SHIFT) + 1 \
+ )
+
+/**
+ * smu_dcc_get_max_remote_node_context() -
+ *
+ * This macro returns the maximum number of remote node contexts supported by
+ * the hardware. The caller passes in the value read from the device context
+ * capacity register and this macro will mash and shift the value appropriately.
+ */
+#define smu_dcc_get_max_remote_node_context(dcc_value) \
+ (\
+ (((dcc_value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_RNC_MASK) \
+ >> SMU_DEVICE_CONTEXT_CAPACITY_MAX_RNC_SHIFT) + 1 \
+ )
+
+
+static void scic_sds_controller_power_control_timer_handler(
+ void *controller);
+#define SCIC_SDS_CONTROLLER_MIN_TIMER_COUNT 3
+#define SCIC_SDS_CONTROLLER_MAX_TIMER_COUNT 3
+
+/**
+ *
+ *
+ * The number of milliseconds to wait for a phy to start.
+ */
+#define SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT 100
+
+/**
+ *
+ *
+ * The number of milliseconds to wait while a given phy is consuming power
+ * before allowing another set of phys to consume power. Ultimately, this will
+ * be specified by OEM parameter.
+ */
+#define SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL 500
+
+/**
+ * COMPLETION_QUEUE_CYCLE_BIT() -
+ *
+ * This macro will return the cycle bit of the completion queue entry
+ */
+#define COMPLETION_QUEUE_CYCLE_BIT(x) ((x) & 0x80000000)
+
+/**
+ * NORMALIZE_GET_POINTER() -
+ *
+ * This macro will normalize the completion queue get pointer so its value can
+ * be used as an index into an array
+ */
+#define NORMALIZE_GET_POINTER(x) \
+ ((x) & SMU_COMPLETION_QUEUE_GET_POINTER_MASK)
+
+/**
+ * NORMALIZE_PUT_POINTER() -
+ *
+ * This macro will normalize the completion queue put pointer so its value can
+ * be used as an array inde
+ */
+#define NORMALIZE_PUT_POINTER(x) \
+ ((x) & SMU_COMPLETION_QUEUE_PUT_POINTER_MASK)
+
+
+/**
+ * NORMALIZE_GET_POINTER_CYCLE_BIT() -
+ *
+ * This macro will normalize the completion queue cycle pointer so it matches
+ * the completion queue cycle bit
+ */
+#define NORMALIZE_GET_POINTER_CYCLE_BIT(x) \
+ ((SMU_CQGR_CYCLE_BIT & (x)) << (31 - SMU_COMPLETION_QUEUE_GET_CYCLE_BIT_SHIFT))
+
+/**
+ * NORMALIZE_EVENT_POINTER() -
+ *
+ * This macro will normalize the completion queue event entry so its value can
+ * be used as an index.
+ */
+#define NORMALIZE_EVENT_POINTER(x) \
+ (\
+ ((x) & SMU_COMPLETION_QUEUE_GET_EVENT_POINTER_MASK) \
+ >> SMU_COMPLETION_QUEUE_GET_EVENT_POINTER_SHIFT \
+ )
+
+/**
+ * INCREMENT_COMPLETION_QUEUE_GET() -
+ *
+ * This macro will increment the controllers completion queue index value and
+ * possibly toggle the cycle bit if the completion queue index wraps back to 0.
+ */
+#define INCREMENT_COMPLETION_QUEUE_GET(controller, index, cycle) \
+ INCREMENT_QUEUE_GET(\
+ (index), \
+ (cycle), \
+ (controller)->completion_queue_entries, \
+ SMU_CQGR_CYCLE_BIT \
+ )
+
+/**
+ * INCREMENT_EVENT_QUEUE_GET() -
+ *
+ * This macro will increment the controllers event queue index value and
+ * possibly toggle the event cycle bit if the event queue index wraps back to 0.
+ */
+#define INCREMENT_EVENT_QUEUE_GET(controller, index, cycle) \
+ INCREMENT_QUEUE_GET(\
+ (index), \
+ (cycle), \
+ (controller)->completion_event_entries, \
+ SMU_CQGR_EVENT_CYCLE_BIT \
+ )
+
+struct sci_base_memory_descriptor_list *
+sci_controller_get_memory_descriptor_list_handle(struct scic_sds_controller *scic)
+{
+ return &scic->parent.mdl;
+}
+
+/*
+ * ****************************************************************************-
+ * * SCIC SDS Controller Initialization Methods
+ * ****************************************************************************- */
+
+/**
+ * This timer is used to start another phy after we have given up on the
+ * previous phy to transition to the ready state.
+ *
+ *
+ */
+static void scic_sds_controller_phy_startup_timeout_handler(
+ void *controller)
+{
+ enum sci_status status;
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)controller;
+
+ this_controller->phy_startup_timer_pending = false;
+
+ status = SCI_FAILURE;
+
+ while (status != SCI_SUCCESS) {
+ status = scic_sds_controller_start_next_phy(this_controller);
+ }
+}
+
+/**
+ *
+ *
+ * This method initializes the phy startup operations for controller start.
+ */
+enum sci_status scic_sds_controller_initialize_phy_startup(
+ struct scic_sds_controller *this_controller)
+{
+ this_controller->phy_startup_timer = isci_event_timer_create(
+ this_controller,
+ scic_sds_controller_phy_startup_timeout_handler,
+ this_controller
+ );
+
+ if (this_controller->phy_startup_timer == NULL) {
+ return SCI_FAILURE_INSUFFICIENT_RESOURCES;
+ } else {
+ this_controller->next_phy_to_start = 0;
+ this_controller->phy_startup_timer_pending = false;
+ }
+
+ return SCI_SUCCESS;
+}
+
+/**
+ *
+ *
+ * This method initializes the power control operations for the controller
+ * object.
+ */
+void scic_sds_controller_initialize_power_control(
+ struct scic_sds_controller *this_controller)
+{
+ this_controller->power_control.timer = isci_event_timer_create(
+ this_controller,
+ scic_sds_controller_power_control_timer_handler,
+ this_controller
+ );
+
+ memset(
+ this_controller->power_control.requesters,
+ 0,
+ sizeof(this_controller->power_control.requesters)
+ );
+
+ this_controller->power_control.phys_waiting = 0;
+}
+
+/* --------------------------------------------------------------------------- */
+
+#define SCU_REMOTE_NODE_CONTEXT_ALIGNMENT (32)
+#define SCU_TASK_CONTEXT_ALIGNMENT (256)
+#define SCU_UNSOLICITED_FRAME_ADDRESS_ALIGNMENT (64)
+#define SCU_UNSOLICITED_FRAME_BUFFER_ALIGNMENT (1024)
+#define SCU_UNSOLICITED_FRAME_HEADER_ALIGNMENT (64)
+
+/* --------------------------------------------------------------------------- */
+
+/**
+ * This method builds the memory descriptor table for this controller.
+ * @this_controller: This parameter specifies the controller object for which
+ * to build the memory table.
+ *
+ */
+void scic_sds_controller_build_memory_descriptor_table(
+ struct scic_sds_controller *this_controller)
+{
+ sci_base_mde_construct(
+ &this_controller->memory_descriptors[SCU_MDE_COMPLETION_QUEUE],
+ SCU_COMPLETION_RAM_ALIGNMENT,
+ (sizeof(u32) * this_controller->completion_queue_entries),
+ (SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS)
+ );
+
+ sci_base_mde_construct(
+ &this_controller->memory_descriptors[SCU_MDE_REMOTE_NODE_CONTEXT],
+ SCU_REMOTE_NODE_CONTEXT_ALIGNMENT,
+ this_controller->remote_node_entries * sizeof(union scu_remote_node_context),
+ SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS
+ );
+
+ sci_base_mde_construct(
+ &this_controller->memory_descriptors[SCU_MDE_TASK_CONTEXT],
+ SCU_TASK_CONTEXT_ALIGNMENT,
+ this_controller->task_context_entries * sizeof(struct scu_task_context),
+ SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS
+ );
+
+ /*
+ * The UF buffer address table size must be programmed to a power
+ * of 2. Find the first power of 2 that is equal to or greater then
+ * the number of unsolicited frame buffers to be utilized. */
+ scic_sds_unsolicited_frame_control_set_address_table_count(
+ &this_controller->uf_control
+ );
+
+ sci_base_mde_construct(
+ &this_controller->memory_descriptors[SCU_MDE_UF_BUFFER],
+ SCU_UNSOLICITED_FRAME_BUFFER_ALIGNMENT,
+ scic_sds_unsolicited_frame_control_get_mde_size(this_controller->uf_control),
+ SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS
+ );
+}
+
+/**
+ * This method validates the driver supplied memory descriptor table.
+ * @this_controller:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_controller_validate_memory_descriptor_table(
+ struct scic_sds_controller *this_controller)
+{
+ bool mde_list_valid;
+
+ mde_list_valid = sci_base_mde_is_valid(
+ &this_controller->memory_descriptors[SCU_MDE_COMPLETION_QUEUE],
+ SCU_COMPLETION_RAM_ALIGNMENT,
+ (sizeof(u32) * this_controller->completion_queue_entries),
+ (SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS)
+ );
+
+ if (mde_list_valid == false)
+ return SCI_FAILURE_UNSUPPORTED_INFORMATION_FIELD;
+
+ mde_list_valid = sci_base_mde_is_valid(
+ &this_controller->memory_descriptors[SCU_MDE_REMOTE_NODE_CONTEXT],
+ SCU_REMOTE_NODE_CONTEXT_ALIGNMENT,
+ this_controller->remote_node_entries * sizeof(union scu_remote_node_context),
+ SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS
+ );
+
+ if (mde_list_valid == false)
+ return SCI_FAILURE_UNSUPPORTED_INFORMATION_FIELD;
+
+ mde_list_valid = sci_base_mde_is_valid(
+ &this_controller->memory_descriptors[SCU_MDE_TASK_CONTEXT],
+ SCU_TASK_CONTEXT_ALIGNMENT,
+ this_controller->task_context_entries * sizeof(struct scu_task_context),
+ SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS
+ );
+
+ if (mde_list_valid == false)
+ return SCI_FAILURE_UNSUPPORTED_INFORMATION_FIELD;
+
+ mde_list_valid = sci_base_mde_is_valid(
+ &this_controller->memory_descriptors[SCU_MDE_UF_BUFFER],
+ SCU_UNSOLICITED_FRAME_BUFFER_ALIGNMENT,
+ scic_sds_unsolicited_frame_control_get_mde_size(this_controller->uf_control),
+ SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS
+ );
+
+ if (mde_list_valid == false)
+ return SCI_FAILURE_UNSUPPORTED_INFORMATION_FIELD;
+
+ return SCI_SUCCESS;
+}
+
+/**
+ * This method initializes the controller with the physical memory addresses
+ * that are used to communicate with the driver.
+ * @this_controller:
+ *
+ */
+void scic_sds_controller_ram_initialization(
+ struct scic_sds_controller *this_controller)
+{
+ struct sci_physical_memory_descriptor *mde;
+
+ /*
+ * The completion queue is actually placed in cacheable memory
+ * Therefore it no longer comes out of memory in the MDL. */
+ mde = &this_controller->memory_descriptors[SCU_MDE_COMPLETION_QUEUE];
+ this_controller->completion_queue = (u32 *)mde->virtual_address;
+ SMU_CQBAR_WRITE(this_controller, mde->physical_address);
+
+ /*
+ * Program the location of the Remote Node Context table
+ * into the SCU. */
+ mde = &this_controller->memory_descriptors[SCU_MDE_REMOTE_NODE_CONTEXT];
+ this_controller->remote_node_context_table = (union scu_remote_node_context *)
+ mde->virtual_address;
+ SMU_RNCBAR_WRITE(this_controller, mde->physical_address);
+
+ /* Program the location of the Task Context table into the SCU. */
+ mde = &this_controller->memory_descriptors[SCU_MDE_TASK_CONTEXT];
+ this_controller->task_context_table = (struct scu_task_context *)
+ mde->virtual_address;
+ SMU_HTTBAR_WRITE(this_controller, mde->physical_address);
+
+ mde = &this_controller->memory_descriptors[SCU_MDE_UF_BUFFER];
+ scic_sds_unsolicited_frame_control_construct(
+ &this_controller->uf_control, mde, this_controller
+ );
+
+ /*
+ * Inform the silicon as to the location of the UF headers and
+ * address table. */
+ SCU_UFHBAR_WRITE(
+ this_controller,
+ this_controller->uf_control.headers.physical_address);
+ SCU_PUFATHAR_WRITE(
+ this_controller,
+ this_controller->uf_control.address_table.physical_address);
+}
+
+/**
+ * This method initializes the task context data for the controller.
+ * @this_controller:
+ *
+ */
+void scic_sds_controller_assign_task_entries(
+ struct scic_sds_controller *this_controller)
+{
+ u32 task_assignment;
+
+ /*
+ * Assign all the TCs to function 0
+ * TODO: Do we actually need to read this register to write it back? */
+ task_assignment = SMU_TCA_READ(this_controller, 0);
+
+ task_assignment =
+ (
+ task_assignment
+ | (SMU_TCA_GEN_VAL(STARTING, 0))
+ | (SMU_TCA_GEN_VAL(ENDING, this_controller->task_context_entries - 1))
+ | (SMU_TCA_GEN_BIT(RANGE_CHECK_ENABLE))
+ );
+
+ SMU_TCA_WRITE(this_controller, 0, task_assignment);
+}
+
+/**
+ * This method initializes the hardware completion queue.
+ *
+ *
+ */
+void scic_sds_controller_initialize_completion_queue(
+ struct scic_sds_controller *this_controller)
+{
+ u32 index;
+ u32 completion_queue_control_value;
+ u32 completion_queue_get_value;
+ u32 completion_queue_put_value;
+
+ this_controller->completion_queue_get = 0;
+
+ completion_queue_control_value = (
+ SMU_CQC_QUEUE_LIMIT_SET(this_controller->completion_queue_entries - 1)
+ | SMU_CQC_EVENT_LIMIT_SET(this_controller->completion_event_entries - 1)
+ );
+
+ SMU_CQC_WRITE(this_controller, completion_queue_control_value);
+
+ /* Set the completion queue get pointer and enable the queue */
+ completion_queue_get_value = (
+ (SMU_CQGR_GEN_VAL(POINTER, 0))
+ | (SMU_CQGR_GEN_VAL(EVENT_POINTER, 0))
+ | (SMU_CQGR_GEN_BIT(ENABLE))
+ | (SMU_CQGR_GEN_BIT(EVENT_ENABLE))
+ );
+
+ SMU_CQGR_WRITE(this_controller, completion_queue_get_value);
+
+ /* Set the completion queue put pointer */
+ completion_queue_put_value = (
+ (SMU_CQPR_GEN_VAL(POINTER, 0))
+ | (SMU_CQPR_GEN_VAL(EVENT_POINTER, 0))
+ );
+
+ SMU_CQPR_WRITE(this_controller, completion_queue_put_value);
+
+ /* Initialize the cycle bit of the completion queue entries */
+ for (index = 0; index < this_controller->completion_queue_entries; index++) {
+ /*
+ * If get.cycle_bit != completion_queue.cycle_bit
+ * its not a valid completion queue entry
+ * so at system start all entries are invalid */
+ this_controller->completion_queue[index] = 0x80000000;
+ }
+}
+
+/**
+ * This method initializes the hardware unsolicited frame queue.
+ *
+ *
+ */
+void scic_sds_controller_initialize_unsolicited_frame_queue(
+ struct scic_sds_controller *this_controller)
+{
+ u32 frame_queue_control_value;
+ u32 frame_queue_get_value;
+ u32 frame_queue_put_value;
+
+ /* Write the queue size */
+ frame_queue_control_value =
+ SCU_UFQC_GEN_VAL(QUEUE_SIZE, this_controller->uf_control.address_table.count);
+
+ SCU_UFQC_WRITE(this_controller, frame_queue_control_value);
+
+ /* Setup the get pointer for the unsolicited frame queue */
+ frame_queue_get_value = (
+ SCU_UFQGP_GEN_VAL(POINTER, 0)
+ | SCU_UFQGP_GEN_BIT(ENABLE_BIT)
+ );
+
+ SCU_UFQGP_WRITE(this_controller, frame_queue_get_value);
+
+ /* Setup the put pointer for the unsolicited frame queue */
+ frame_queue_put_value = SCU_UFQPP_GEN_VAL(POINTER, 0);
+
+ SCU_UFQPP_WRITE(this_controller, frame_queue_put_value);
+}
+
+/**
+ * This method enables the hardware port task scheduler.
+ *
+ *
+ */
+void scic_sds_controller_enable_port_task_scheduler(
+ struct scic_sds_controller *this_controller)
+{
+ u32 port_task_scheduler_value;
+
+ port_task_scheduler_value = SCU_PTSGCR_READ(this_controller);
+
+ port_task_scheduler_value |=
+ (SCU_PTSGCR_GEN_BIT(ETM_ENABLE) | SCU_PTSGCR_GEN_BIT(PTSG_ENABLE));
+
+ SCU_PTSGCR_WRITE(this_controller, port_task_scheduler_value);
+}
+
+/* --------------------------------------------------------------------------- */
+
+/**
+ *
+ *
+ * This macro is used to delay between writes to the AFE registers during AFE
+ * initialization.
+ */
+#define AFE_REGISTER_WRITE_DELAY 10
+
+/* Initialize the AFE for this phy index. We need to read the AFE setup from
+ * the OEM parameters none
+ */
+void scic_sds_controller_afe_initialization(struct scic_sds_controller *scic)
+{
+ u32 afe_status;
+ u32 phy_id;
+
+ /* Clear DFX Status registers */
+ scu_afe_register_write(scic, afe_dfx_master_control0, 0x0081000f);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ /* Configure bias currents to normal */
+ if (is_a0())
+ scu_afe_register_write(scic, afe_bias_control, 0x00005500);
+ else
+ scu_afe_register_write(scic, afe_bias_control, 0x00005A00);
+
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ /* Enable PLL */
+ if (is_b0())
+ scu_afe_register_write(scic, afe_pll_control0, 0x80040A08);
+ else
+ scu_afe_register_write(scic, afe_pll_control0, 0x80040908);
+
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ /* Wait for the PLL to lock */
+ do {
+ afe_status = scu_afe_register_read(
+ scic, afe_common_block_status);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+ } while ((afe_status & 0x00001000) == 0);
+
+ if (is_b0()) {
+ /* Shorten SAS SNW lock time (RxLock timer value from 76 us to 50 us) */
+ scu_afe_register_write(scic, afe_pmsn_master_control0, 0x7bcc96ad);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+ }
+
+ for (phy_id = 0; phy_id < SCI_MAX_PHYS; phy_id++) {
+ if (is_b0()) {
+ /* Configure transmitter SSC parameters */
+ scu_afe_txreg_write(scic, phy_id, afe_tx_ssc_control, 0x00030000);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+ } else {
+ /*
+ * All defaults, except the Receive Word Alignament/Comma Detect
+ * Enable....(0xe800) */
+ scu_afe_txreg_write(scic, phy_id, afe_xcvr_control0, 0x00004512);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ scu_afe_txreg_write(scic, phy_id, afe_xcvr_control1, 0x0050100F);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+ }
+
+ /*
+ * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
+ * & increase TX int & ext bias 20%....(0xe85c) */
+ if (is_a0())
+ scu_afe_txreg_write(scic, phy_id, afe_channel_control, 0x000003D4);
+ else if (is_a2())
+ scu_afe_txreg_write(scic, phy_id, afe_channel_control, 0x000003F0);
+ else {
+ /* Power down TX and RX (PWRDNTX and PWRDNRX) */
+ scu_afe_txreg_write(scic, phy_id, afe_channel_control, 0x000003d7);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ /*
+ * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
+ * & increase TX int & ext bias 20%....(0xe85c) */
+ scu_afe_txreg_write(scic, phy_id, afe_channel_control, 0x000003d4);
+ }
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ if (is_a0() || is_a2()) {
+ /* Enable TX equalization (0xe824) */
+ scu_afe_txreg_write(scic, phy_id, afe_tx_control, 0x00040000);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+ }
+
+ /*
+ * RDPI=0x0(RX Power On), RXOOBDETPDNC=0x0, TPD=0x0(TX Power On),
+ * RDD=0x0(RX Detect Enabled) ....(0xe800) */
+ scu_afe_txreg_write(scic, phy_id, afe_xcvr_control0, 0x00004100);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ /* Leave DFE/FFE on */
+ if (is_a0())
+ scu_afe_txreg_write(scic, phy_id, afe_rx_ssc_control0, 0x3F09983F);
+ else if (is_a2())
+ scu_afe_txreg_write(scic, phy_id, afe_rx_ssc_control0, 0x3F11103F);
+ else {
+ scu_afe_txreg_write(scic, phy_id, afe_rx_ssc_control0, 0x3F11103F);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+ /* Enable TX equalization (0xe824) */
+ scu_afe_txreg_write(scic, phy_id, afe_tx_control, 0x00040000);
+ }
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ scu_afe_txreg_write(scic, phy_id, afe_tx_amp_control0, 0x000E7C03);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ scu_afe_txreg_write(scic, phy_id, afe_tx_amp_control1, 0x000E7C03);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ scu_afe_txreg_write(scic, phy_id, afe_tx_amp_control2, 0x000E7C03);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+
+ scu_afe_txreg_write(scic, phy_id, afe_tx_amp_control3, 0x000E7C03);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+ }
+
+ /* Transfer control to the PEs */
+ scu_afe_register_write(scic, afe_dfx_master_control0, 0x00010f00);
+ udelay(AFE_REGISTER_WRITE_DELAY);
+}
+
+/*
+ * ****************************************************************************-
+ * * SCIC SDS Controller Internal Start/Stop Routines
+ * ****************************************************************************- */
+
+
+/**
+ * This method will attempt to transition into the ready state for the
+ * controller and indicate that the controller start operation has completed
+ * if all criteria are met.
+ * @this_controller: This parameter indicates the controller object for which
+ * to transition to ready.
+ * @status: This parameter indicates the status value to be pass into the call
+ * to scic_cb_controller_start_complete().
+ *
+ * none.
+ */
+static void scic_sds_controller_transition_to_ready(
+ struct scic_sds_controller *this_controller,
+ enum sci_status status)
+{
+ if (this_controller->parent.state_machine.current_state_id
+ == SCI_BASE_CONTROLLER_STATE_STARTING) {
+ /*
+ * We move into the ready state, because some of the phys/ports
+ * may be up and operational. */
+ sci_base_state_machine_change_state(
+ scic_sds_controller_get_base_state_machine(this_controller),
+ SCI_BASE_CONTROLLER_STATE_READY
+ );
+
+ isci_event_controller_start_complete(this_controller, status);
+ }
+}
+
+/**
+ * This method is the general timeout handler for the controller. It will take
+ * the correct timetout action based on the current controller state
+ */
+void scic_sds_controller_timeout_handler(
+ struct scic_sds_controller *scic)
+{
+ enum sci_base_controller_states current_state;
+
+ current_state = sci_base_state_machine_get_state(
+ scic_sds_controller_get_base_state_machine(scic));
+
+ if (current_state == SCI_BASE_CONTROLLER_STATE_STARTING) {
+ scic_sds_controller_transition_to_ready(
+ scic, SCI_FAILURE_TIMEOUT);
+ } else if (current_state == SCI_BASE_CONTROLLER_STATE_STOPPING) {
+ sci_base_state_machine_change_state(
+ scic_sds_controller_get_base_state_machine(scic),
+ SCI_BASE_CONTROLLER_STATE_FAILED);
+ isci_event_controller_stop_complete(scic, SCI_FAILURE_TIMEOUT);
+ } else /* / @todo Now what do we want to do in this case? */
+ dev_err(scic_to_dev(scic),
+ "%s: Controller timer fired when controller was not "
+ "in a state being timed.\n",
+ __func__);
+}
+
+/**
+ * scic_sds_controller_get_port_configuration_mode
+ * @this_controller: This is the controller to use to determine if we are using
+ * manual or automatic port configuration.
+ *
+ * SCIC_PORT_CONFIGURATION_MODE
+ */
+enum SCIC_PORT_CONFIGURATION_MODE scic_sds_controller_get_port_configuration_mode(
+ struct scic_sds_controller *this_controller)
+{
+ u32 index;
+ enum SCIC_PORT_CONFIGURATION_MODE mode;
+
+ mode = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
+
+ for (index = 0; index < SCI_MAX_PORTS; index++) {
+ if (this_controller->oem_parameters.sds1.ports[index].phy_mask != 0) {
+ mode = SCIC_PORT_MANUAL_CONFIGURATION_MODE;
+ break;
+ }
+ }
+
+ return mode;
+}
+
+enum sci_status scic_sds_controller_stop_ports(struct scic_sds_controller *scic)
+{
+ u32 index;
+ enum sci_status port_status;
+ enum sci_status status = SCI_SUCCESS;
+
+ for (index = 0; index < scic->logical_port_entries; index++) {
+ struct scic_sds_port *sci_port = &scic->port_table[index];
+ SCI_BASE_PORT_HANDLER_T stop;
+
+ stop = sci_port->state_handlers->parent.stop_handler;
+ port_status = stop(&sci_port->parent);
+
+ if ((port_status != SCI_SUCCESS) &&
+ (port_status != SCI_FAILURE_INVALID_STATE)) {
+ status = SCI_FAILURE;
+
+ dev_warn(scic_to_dev(scic),
+ "%s: Controller stop operation failed to "
+ "stop port %d because of status %d.\n",
+ __func__,
+ sci_port->logical_port_index,
+ port_status);
+ }
+ }
+
+ return status;
+}
+
+/**
+ *
+ *
+ *
+ */
+static void scic_sds_controller_phy_timer_start(
+ struct scic_sds_controller *this_controller)
+{
+ isci_event_timer_start(
+ this_controller,
+ this_controller->phy_startup_timer,
+ SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT
+ );
+
+ this_controller->phy_startup_timer_pending = true;
+}
+
+/**
+ *
+ *
+ *
+ */
+void scic_sds_controller_phy_timer_stop(
+ struct scic_sds_controller *this_controller)
+{
+ isci_event_timer_stop(
+ this_controller,
+ this_controller->phy_startup_timer
+ );
+
+ this_controller->phy_startup_timer_pending = false;
+}
+
+/**
+ * This method is called internally by the controller object to start the next
+ * phy on the controller. If all the phys have been starte, then this
+ * method will attempt to transition the controller to the READY state and
+ * inform the user (scic_cb_controller_start_complete()).
+ * @this_controller: This parameter specifies the controller object for which
+ * to start the next phy.
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_controller_start_next_phy(
+ struct scic_sds_controller *this_controller)
+{
+ enum sci_status status;
+
+ status = SCI_SUCCESS;
+
+ if (this_controller->phy_startup_timer_pending == false) {
+ if (this_controller->next_phy_to_start == SCI_MAX_PHYS) {
+ bool is_controller_start_complete = true;
+ struct scic_sds_phy *the_phy;
+ u8 index;
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ the_phy = &this_controller->phy_table[index];
+
+ if (scic_sds_phy_get_port(the_phy) != NULL) {
+ /**
+ * The controller start operation is complete if and only
+ * if:
+ * - all links have been given an opportunity to start
+ * - have no indication of a connected device
+ * - have an indication of a connected device and it has
+ * finished the link training process.
+ */
+ if (
+ (
+ (the_phy->is_in_link_training == false)
+ && (the_phy->parent.state_machine.current_state_id
+ == SCI_BASE_PHY_STATE_INITIAL)
+ )
+ || (
+ (the_phy->is_in_link_training == false)
+ && (the_phy->parent.state_machine.current_state_id
+ == SCI_BASE_PHY_STATE_STOPPED)
+ )
+ || (
+ (the_phy->is_in_link_training == true)
+ && (the_phy->parent.state_machine.current_state_id
+ == SCI_BASE_PHY_STATE_STARTING)
+ )
+ ) {
+ is_controller_start_complete = false;
+ break;
+ }
+ }
+ }
+
+ /*
+ * The controller has successfully finished the start process.
+ * Inform the SCI Core user and transition to the READY state. */
+ if (is_controller_start_complete == true) {
+ scic_sds_controller_transition_to_ready(
+ this_controller, SCI_SUCCESS
+ );
+ scic_sds_controller_phy_timer_stop(this_controller);
+ }
+ } else {
+ struct scic_sds_phy *the_phy;
+
+ the_phy = &this_controller->phy_table[this_controller->next_phy_to_start];
+
+ if (
+ scic_sds_controller_get_port_configuration_mode(this_controller)
+ == SCIC_PORT_MANUAL_CONFIGURATION_MODE
+ ) {
+ if (scic_sds_phy_get_port(the_phy) == NULL) {
+ this_controller->next_phy_to_start++;
+
+ /*
+ * Caution recursion ahead be forwarned
+ *
+ * The PHY was never added to a PORT in MPC mode so start the next phy in sequence
+ * This phy will never go link up and will not draw power the OEM parameters either
+ * configured the phy incorrectly for the PORT or it was never assigned to a PORT */
+ return scic_sds_controller_start_next_phy(this_controller);
+ }
+ }
+
+ status = scic_sds_phy_start(the_phy);
+
+ if (status == SCI_SUCCESS) {
+ scic_sds_controller_phy_timer_start(this_controller);
+ } else {
+ dev_warn(scic_to_dev(this_controller),
+ "%s: Controller stop operation failed "
+ "to stop phy %d because of status "
+ "%d.\n",
+ __func__,
+ this_controller->phy_table[this_controller->next_phy_to_start].phy_index,
+ status);
+ }
+
+ this_controller->next_phy_to_start++;
+ }
+ }
+
+ return status;
+}
+
+/**
+ *
+ * @this_controller:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_controller_stop_phys(
+ struct scic_sds_controller *this_controller)
+{
+ u32 index;
+ enum sci_status status;
+ enum sci_status phy_status;
+
+ status = SCI_SUCCESS;
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ phy_status = scic_sds_phy_stop(&this_controller->phy_table[index]);
+
+ if (
+ (phy_status != SCI_SUCCESS)
+ && (phy_status != SCI_FAILURE_INVALID_STATE)
+ ) {
+ status = SCI_FAILURE;
+
+ dev_warn(scic_to_dev(this_controller),
+ "%s: Controller stop operation failed to stop "
+ "phy %d because of status %d.\n",
+ __func__,
+ this_controller->phy_table[index].phy_index, phy_status);
+ }
+ }
+
+ return status;
+}
+
+/**
+ *
+ * @this_controller:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_controller_stop_devices(
+ struct scic_sds_controller *this_controller)
+{
+ u32 index;
+ enum sci_status status;
+ enum sci_status device_status;
+
+ status = SCI_SUCCESS;
+
+ for (index = 0; index < this_controller->remote_node_entries; index++) {
+ if (this_controller->device_table[index] != NULL) {
+ /* / @todo What timeout value do we want to provide to this request? */
+ device_status = scic_remote_device_stop(this_controller->device_table[index], 0);
+
+ if ((device_status != SCI_SUCCESS) &&
+ (device_status != SCI_FAILURE_INVALID_STATE)) {
+ dev_warn(scic_to_dev(this_controller),
+ "%s: Controller stop operation failed "
+ "to stop device 0x%p because of "
+ "status %d.\n",
+ __func__,
+ this_controller->device_table[index], device_status);
+ }
+ }
+ }
+
+ return status;
+}
+
+/*
+ * ****************************************************************************-
+ * * SCIC SDS Controller Power Control (Staggered Spinup)
+ * ****************************************************************************- */
+
+/**
+ *
+ *
+ * This method starts the power control timer for this controller object.
+ */
+static void scic_sds_controller_power_control_timer_start(
+ struct scic_sds_controller *this_controller)
+{
+ isci_event_timer_start(
+ this_controller, this_controller->power_control.timer,
+ SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL
+ );
+
+ this_controller->power_control.timer_started = true;
+}
+
+/**
+ *
+ *
+ *
+ */
+static void scic_sds_controller_power_control_timer_handler(
+ void *controller)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)controller;
+
+ if (this_controller->power_control.phys_waiting == 0) {
+ this_controller->power_control.timer_started = false;
+ } else {
+ struct scic_sds_phy *the_phy = NULL;
+ u8 i;
+
+ for (i = 0;
+ (i < SCI_MAX_PHYS)
+ && (this_controller->power_control.phys_waiting != 0);
+ i++) {
+ if (this_controller->power_control.requesters[i] != NULL) {
+ the_phy = this_controller->power_control.requesters[i];
+ this_controller->power_control.requesters[i] = NULL;
+ this_controller->power_control.phys_waiting--;
+ break;
+ }
+ }
+
+ /*
+ * It doesn't matter if the power list is empty, we need to start the
+ * timer in case another phy becomes ready. */
+ scic_sds_controller_power_control_timer_start(this_controller);
+
+ scic_sds_phy_consume_power_handler(the_phy);
+ }
+}
+
+/**
+ * This method inserts the phy in the stagger spinup control queue.
+ * @this_controller:
+ *
+ *
+ */
+void scic_sds_controller_power_control_queue_insert(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_phy *the_phy)
+{
+ BUG_ON(the_phy == NULL);
+
+ if (
+ (this_controller->power_control.timer_started)
+ && (this_controller->power_control.requesters[the_phy->phy_index] == NULL)
+ ) {
+ this_controller->power_control.requesters[the_phy->phy_index] = the_phy;
+ this_controller->power_control.phys_waiting++;
+ } else {
+ scic_sds_controller_power_control_timer_start(this_controller);
+ scic_sds_phy_consume_power_handler(the_phy);
+ }
+}
+
+/**
+ * This method removes the phy from the stagger spinup control queue.
+ * @this_controller:
+ *
+ *
+ */
+void scic_sds_controller_power_control_queue_remove(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_phy *the_phy)
+{
+ BUG_ON(the_phy == NULL);
+
+ if (this_controller->power_control.requesters[the_phy->phy_index] != NULL) {
+ this_controller->power_control.phys_waiting--;
+ }
+
+ this_controller->power_control.requesters[the_phy->phy_index] = NULL;
+}
+
+/*
+ * ****************************************************************************-
+ * * SCIC SDS Controller Completion Routines
+ * ****************************************************************************- */
+
+/**
+ * This method returns a true value if the completion queue has entries that
+ * can be processed
+ * @this_controller:
+ *
+ * bool true if the completion queue has entries to process false if the
+ * completion queue has no entries to process
+ */
+static bool scic_sds_controller_completion_queue_has_entries(
+ struct scic_sds_controller *this_controller)
+{
+ u32 get_value = this_controller->completion_queue_get;
+ u32 get_index = get_value & SMU_COMPLETION_QUEUE_GET_POINTER_MASK;
+
+ if (
+ NORMALIZE_GET_POINTER_CYCLE_BIT(get_value)
+ == COMPLETION_QUEUE_CYCLE_BIT(this_controller->completion_queue[get_index])
+ ) {
+ return true;
+ }
+
+ return false;
+}
+
+/* --------------------------------------------------------------------------- */
+
+/**
+ * This method processes a task completion notification. This is called from
+ * within the controller completion handler.
+ * @this_controller:
+ * @completion_entry:
+ *
+ */
+static void scic_sds_controller_task_completion(
+ struct scic_sds_controller *this_controller,
+ u32 completion_entry)
+{
+ u32 index;
+ struct scic_sds_request *io_request;
+
+ index = SCU_GET_COMPLETION_INDEX(completion_entry);
+ io_request = this_controller->io_request_table[index];
+
+ /* Make sure that we really want to process this IO request */
+ if (
+ (io_request != NULL)
+ && (io_request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG)
+ && (
+ scic_sds_io_tag_get_sequence(io_request->io_tag)
+ == this_controller->io_request_sequence[index]
+ )
+ ) {
+ /* Yep this is a valid io request pass it along to the io request handler */
+ scic_sds_io_request_tc_completion(io_request, completion_entry);
+ }
+}
+
+/**
+ * This method processes an SDMA completion event. This is called from within
+ * the controller completion handler.
+ * @this_controller:
+ * @completion_entry:
+ *
+ */
+static void scic_sds_controller_sdma_completion(
+ struct scic_sds_controller *this_controller,
+ u32 completion_entry)
+{
+ u32 index;
+ struct scic_sds_request *io_request;
+ struct scic_sds_remote_device *device;
+
+ index = SCU_GET_COMPLETION_INDEX(completion_entry);
+
+ switch (scu_get_command_request_type(completion_entry)) {
+ case SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC:
+ case SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_TC:
+ io_request = this_controller->io_request_table[index];
+ dev_warn(scic_to_dev(this_controller),
+ "%s: SCIC SDS Completion type SDMA %x for io request "
+ "%p\n",
+ __func__,
+ completion_entry,
+ io_request);
+ /* @todo For a post TC operation we need to fail the IO
+ * request
+ */
+ break;
+
+ case SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC:
+ case SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC:
+ case SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC:
+ device = this_controller->device_table[index];
+ dev_warn(scic_to_dev(this_controller),
+ "%s: SCIC SDS Completion type SDMA %x for remote "
+ "device %p\n",
+ __func__,
+ completion_entry,
+ device);
+ /* @todo For a port RNC operation we need to fail the
+ * device
+ */
+ break;
+
+ default:
+ dev_warn(scic_to_dev(this_controller),
+ "%s: SCIC SDS Completion unknown SDMA completion "
+ "type %x\n",
+ __func__,
+ completion_entry);
+ break;
+
+ }
+}
+
+/**
+ *
+ * @this_controller:
+ * @completion_entry:
+ *
+ * This method processes an unsolicited frame message. This is called from
+ * within the controller completion handler. none
+ */
+static void scic_sds_controller_unsolicited_frame(
+ struct scic_sds_controller *this_controller,
+ u32 completion_entry)
+{
+ u32 index;
+ u32 frame_index;
+
+ struct scu_unsolicited_frame_header *frame_header;
+ struct scic_sds_phy *phy;
+ struct scic_sds_remote_device *device;
+
+ enum sci_status result = SCI_FAILURE;
+
+ frame_index = SCU_GET_FRAME_INDEX(completion_entry);
+
+ frame_header
+ = this_controller->uf_control.buffers.array[frame_index].header;
+ this_controller->uf_control.buffers.array[frame_index].state
+ = UNSOLICITED_FRAME_IN_USE;
+
+ if (SCU_GET_FRAME_ERROR(completion_entry)) {
+ /*
+ * / @todo If the IAF frame or SIGNATURE FIS frame has an error will
+ * / this cause a problem? We expect the phy initialization will
+ * / fail if there is an error in the frame. */
+ scic_sds_controller_release_frame(this_controller, frame_index);
+ return;
+ }
+
+ if (frame_header->is_address_frame) {
+ index = SCU_GET_PROTOCOL_ENGINE_INDEX(completion_entry);
+ phy = &this_controller->phy_table[index];
+ if (phy != NULL) {
+ result = scic_sds_phy_frame_handler(phy, frame_index);
+ }
+ } else {
+
+ index = SCU_GET_COMPLETION_INDEX(completion_entry);
+
+ if (index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) {
+ /*
+ * This is a signature fis or a frame from a direct attached SATA
+ * device that has not yet been created. In either case forwared
+ * the frame to the PE and let it take care of the frame data. */
+ index = SCU_GET_PROTOCOL_ENGINE_INDEX(completion_entry);
+ phy = &this_controller->phy_table[index];
+ result = scic_sds_phy_frame_handler(phy, frame_index);
+ } else {
+ if (index < this_controller->remote_node_entries)
+ device = this_controller->device_table[index];
+ else
+ device = NULL;
+
+ if (device != NULL)
+ result = scic_sds_remote_device_frame_handler(device, frame_index);
+ else
+ scic_sds_controller_release_frame(this_controller, frame_index);
+ }
+ }
+
+ if (result != SCI_SUCCESS) {
+ /*
+ * / @todo Is there any reason to report some additional error message
+ * / when we get this failure notifiction? */
+ }
+}
+
+/**
+ * This method processes an event completion entry. This is called from within
+ * the controller completion handler.
+ * @this_controller:
+ * @completion_entry:
+ *
+ */
+static void scic_sds_controller_event_completion(
+ struct scic_sds_controller *this_controller,
+ u32 completion_entry)
+{
+ u32 index;
+ struct scic_sds_request *io_request;
+ struct scic_sds_remote_device *device;
+ struct scic_sds_phy *phy;
+
+ index = SCU_GET_COMPLETION_INDEX(completion_entry);
+
+ switch (scu_get_event_type(completion_entry)) {
+ case SCU_EVENT_TYPE_SMU_COMMAND_ERROR:
+ /* / @todo The driver did something wrong and we need to fix the condtion. */
+ dev_err(scic_to_dev(this_controller),
+ "%s: SCIC Controller 0x%p received SMU command error "
+ "0x%x\n",
+ __func__,
+ this_controller,
+ completion_entry);
+ break;
+
+ case SCU_EVENT_TYPE_SMU_PCQ_ERROR:
+ case SCU_EVENT_TYPE_SMU_ERROR:
+ case SCU_EVENT_TYPE_FATAL_MEMORY_ERROR:
+ /*
+ * / @todo This is a hardware failure and its likely that we want to
+ * / reset the controller. */
+ dev_err(scic_to_dev(this_controller),
+ "%s: SCIC Controller 0x%p received fatal controller "
+ "event 0x%x\n",
+ __func__,
+ this_controller,
+ completion_entry);
+ break;
+
+ case SCU_EVENT_TYPE_TRANSPORT_ERROR:
+ io_request = this_controller->io_request_table[index];
+ scic_sds_io_request_event_handler(io_request, completion_entry);
+ break;
+
+ case SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT:
+ switch (scu_get_event_specifier(completion_entry)) {
+ case SCU_EVENT_SPECIFIC_SMP_RESPONSE_NO_PE:
+ case SCU_EVENT_SPECIFIC_TASK_TIMEOUT:
+ io_request = this_controller->io_request_table[index];
+ if (io_request != NULL)
+ scic_sds_io_request_event_handler(io_request, completion_entry);
+ else
+ dev_warn(scic_to_dev(this_controller),
+ "%s: SCIC Controller 0x%p received "
+ "event 0x%x for io request object "
+ "that doesnt exist.\n",
+ __func__,
+ this_controller,
+ completion_entry);
+
+ break;
+
+ case SCU_EVENT_SPECIFIC_IT_NEXUS_TIMEOUT:
+ device = this_controller->device_table[index];
+ if (device != NULL)
+ scic_sds_remote_device_event_handler(device, completion_entry);
+ else
+ dev_warn(scic_to_dev(this_controller),
+ "%s: SCIC Controller 0x%p received "
+ "event 0x%x for remote device object "
+ "that doesnt exist.\n",
+ __func__,
+ this_controller,
+ completion_entry);
+
+ break;
+ }
+ break;
+
+ case SCU_EVENT_TYPE_BROADCAST_CHANGE:
+ /*
+ * direct the broadcast change event to the phy first and then let
+ * the phy redirect the broadcast change to the port object */
+ case SCU_EVENT_TYPE_ERR_CNT_EVENT:
+ /*
+ * direct error counter event to the phy object since that is where
+ * we get the event notification. This is a type 4 event. */
+ case SCU_EVENT_TYPE_OSSP_EVENT:
+ index = SCU_GET_PROTOCOL_ENGINE_INDEX(completion_entry);
+ phy = &this_controller->phy_table[index];
+ scic_sds_phy_event_handler(phy, completion_entry);
+ break;
+
+ case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
+ case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
+ case SCU_EVENT_TYPE_RNC_OPS_MISC:
+ if (index < this_controller->remote_node_entries) {
+ device = this_controller->device_table[index];
+
+ if (device != NULL)
+ scic_sds_remote_device_event_handler(device, completion_entry);
+ } else
+ dev_err(scic_to_dev(this_controller),
+ "%s: SCIC Controller 0x%p received event 0x%x "
+ "for remote device object 0x%0x that doesnt "
+ "exist.\n",
+ __func__,
+ this_controller,
+ completion_entry,
+ index);
+
+ break;
+
+ default:
+ dev_warn(scic_to_dev(this_controller),
+ "%s: SCIC Controller received unknown event code %x\n",
+ __func__,
+ completion_entry);
+ break;
+ }
+}
+
+/**
+ * This method is a private routine for processing the completion queue entries.
+ * @this_controller:
+ *
+ */
+static void scic_sds_controller_process_completions(
+ struct scic_sds_controller *this_controller)
+{
+ u32 completion_count = 0;
+ u32 completion_entry;
+ u32 get_index;
+ u32 get_cycle;
+ u32 event_index;
+ u32 event_cycle;
+
+ dev_dbg(scic_to_dev(this_controller),
+ "%s: completion queue begining get:0x%08x\n",
+ __func__,
+ this_controller->completion_queue_get);
+
+ /* Get the component parts of the completion queue */
+ get_index = NORMALIZE_GET_POINTER(this_controller->completion_queue_get);
+ get_cycle = SMU_CQGR_CYCLE_BIT & this_controller->completion_queue_get;
+
+ event_index = NORMALIZE_EVENT_POINTER(this_controller->completion_queue_get);
+ event_cycle = SMU_CQGR_EVENT_CYCLE_BIT & this_controller->completion_queue_get;
+
+ while (
+ NORMALIZE_GET_POINTER_CYCLE_BIT(get_cycle)
+ == COMPLETION_QUEUE_CYCLE_BIT(this_controller->completion_queue[get_index])
+ ) {
+ completion_count++;
+
+ completion_entry = this_controller->completion_queue[get_index];
+ INCREMENT_COMPLETION_QUEUE_GET(this_controller, get_index, get_cycle);
+
+ dev_dbg(scic_to_dev(this_controller),
+ "%s: completion queue entry:0x%08x\n",
+ __func__,
+ completion_entry);
+
+ switch (SCU_GET_COMPLETION_TYPE(completion_entry)) {
+ case SCU_COMPLETION_TYPE_TASK:
+ scic_sds_controller_task_completion(this_controller, completion_entry);
+ break;
+
+ case SCU_COMPLETION_TYPE_SDMA:
+ scic_sds_controller_sdma_completion(this_controller, completion_entry);
+ break;
+
+ case SCU_COMPLETION_TYPE_UFI:
+ scic_sds_controller_unsolicited_frame(this_controller, completion_entry);
+ break;
+
+ case SCU_COMPLETION_TYPE_EVENT:
+ INCREMENT_EVENT_QUEUE_GET(this_controller, event_index, event_cycle);
+ scic_sds_controller_event_completion(this_controller, completion_entry);
+ break;
+
+ case SCU_COMPLETION_TYPE_NOTIFY:
+ /*
+ * Presently we do the same thing with a notify event that we do with the
+ * other event codes. */
+ INCREMENT_EVENT_QUEUE_GET(this_controller, event_index, event_cycle);
+ scic_sds_controller_event_completion(this_controller, completion_entry);
+ break;
+
+ default:
+ dev_warn(scic_to_dev(this_controller),
+ "%s: SCIC Controller received unknown "
+ "completion type %x\n",
+ __func__,
+ completion_entry);
+ break;
+ }
+ }
+
+ /* Update the get register if we completed one or more entries */
+ if (completion_count > 0) {
+ this_controller->completion_queue_get =
+ SMU_CQGR_GEN_BIT(ENABLE)
+ | SMU_CQGR_GEN_BIT(EVENT_ENABLE)
+ | event_cycle | SMU_CQGR_GEN_VAL(EVENT_POINTER, event_index)
+ | get_cycle | SMU_CQGR_GEN_VAL(POINTER, get_index);
+
+ SMU_CQGR_WRITE(this_controller,
+ this_controller->completion_queue_get);
+ }
+
+ dev_dbg(scic_to_dev(this_controller),
+ "%s: completion queue ending get:0x%08x\n",
+ __func__,
+ this_controller->completion_queue_get);
+
+}
+
+bool scic_sds_controller_isr(struct scic_sds_controller *scic)
+{
+ if (scic_sds_controller_completion_queue_has_entries(scic)) {
+ return true;
+ } else {
+ /*
+ * we have a spurious interrupt it could be that we have already
+ * emptied the completion queue from a previous interrupt */
+ SMU_ISR_WRITE(scic, SMU_ISR_COMPLETION);
+
+ /*
+ * There is a race in the hardware that could cause us not to be notified
+ * of an interrupt completion if we do not take this step. We will mask
+ * then unmask the interrupts so if there is another interrupt pending
+ * the clearing of the interrupt source we get the next interrupt message. */
+ SMU_IMR_WRITE(scic, 0xFF000000);
+ SMU_IMR_WRITE(scic, 0x00000000);
+ }
+
+ return false;
+}
+
+void scic_sds_controller_completion_handler(struct scic_sds_controller *scic)
+{
+ /* Empty out the completion queue */
+ if (scic_sds_controller_completion_queue_has_entries(scic))
+ scic_sds_controller_process_completions(scic);
+
+ /* Clear the interrupt and enable all interrupts again */
+ SMU_ISR_WRITE(scic, SMU_ISR_COMPLETION);
+ /* Could we write the value of SMU_ISR_COMPLETION? */
+ SMU_IMR_WRITE(scic, 0xFF000000);
+ SMU_IMR_WRITE(scic, 0x00000000);
+}
+
+bool scic_sds_controller_error_isr(struct scic_sds_controller *scic)
+{
+ u32 interrupt_status;
+
+ interrupt_status = SMU_ISR_READ(scic);
+
+ interrupt_status &= (SMU_ISR_QUEUE_ERROR | SMU_ISR_QUEUE_SUSPEND);
+
+ if (interrupt_status != 0) {
+ /*
+ * There is an error interrupt pending so let it through and handle
+ * in the callback */
+ return true;
+ }
+
+ /*
+ * There is a race in the hardware that could cause us not to be notified
+ * of an interrupt completion if we do not take this step. We will mask
+ * then unmask the error interrupts so if there was another interrupt
+ * pending we will be notified.
+ * Could we write the value of (SMU_ISR_QUEUE_ERROR | SMU_ISR_QUEUE_SUSPEND)? */
+ SMU_IMR_WRITE(scic, 0x000000FF);
+ SMU_IMR_WRITE(scic, 0x00000000);
+
+ return false;
+}
+
+void scic_sds_controller_error_handler(struct scic_sds_controller *scic)
+{
+ u32 interrupt_status;
+
+ interrupt_status = SMU_ISR_READ(scic);
+
+ if ((interrupt_status & SMU_ISR_QUEUE_SUSPEND) &&
+ scic_sds_controller_completion_queue_has_entries(scic)) {
+
+ scic_sds_controller_process_completions(scic);
+ SMU_ISR_WRITE(scic, SMU_ISR_QUEUE_SUSPEND);
+
+ } else {
+ dev_err(scic_to_dev(scic), "%s: status: %#x\n", __func__,
+ interrupt_status);
+
+ sci_base_state_machine_change_state(
+ scic_sds_controller_get_base_state_machine(scic),
+ SCI_BASE_CONTROLLER_STATE_FAILED);
+
+ return;
+ }
+
+ /*
+ * If we dont process any completions I am not sure that we want to do this.
+ * We are in the middle of a hardware fault and should probably be reset. */
+ SMU_IMR_WRITE(scic, 0x00000000);
+}
+
+
+u32 scic_sds_controller_get_object_size(void)
+{
+ return sizeof(struct scic_sds_controller);
+}
+
+
+void scic_sds_controller_link_up(
+ struct scic_sds_controller *scic,
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ scic_sds_controller_phy_handler_t link_up;
+ u32 state;
+
+ state = scic->parent.state_machine.current_state_id;
+ link_up = scic_sds_controller_state_handler_table[state].link_up;
+
+ if (link_up)
+ link_up(scic, sci_port, sci_phy);
+ else
+ dev_dbg(scic_to_dev(scic),
+ "%s: SCIC Controller linkup event from phy %d in "
+ "unexpected state %d\n",
+ __func__,
+ sci_phy->phy_index,
+ sci_base_state_machine_get_state(
+ scic_sds_controller_get_base_state_machine(
+ scic)));
+}
+
+
+void scic_sds_controller_link_down(
+ struct scic_sds_controller *scic,
+ struct scic_sds_port *sci_port,
+ struct scic_sds_phy *sci_phy)
+{
+ u32 state;
+ scic_sds_controller_phy_handler_t link_down;
+
+ state = scic->parent.state_machine.current_state_id;
+ link_down = scic_sds_controller_state_handler_table[state].link_down;
+
+ if (link_down)
+ link_down(scic, sci_port, sci_phy);
+ else
+ dev_dbg(scic_to_dev(scic),
+ "%s: SCIC Controller linkdown event from phy %d in "
+ "unexpected state %d\n",
+ __func__,
+ sci_phy->phy_index, state);
+}
+
+/**
+ * This method is called by the remote device to inform the controller
+ * that this remote device has started.
+ *
+ */
+
+void scic_sds_controller_remote_device_started(struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *sci_dev)
+{
+ u32 state;
+ scic_sds_controller_device_handler_t started;
+
+ state = scic->parent.state_machine.current_state_id;
+ started = scic_sds_controller_state_handler_table[state].remote_device_started_handler;
+
+ if (started)
+ started(scic, sci_dev);
+ else {
+ dev_dbg(scic_to_dev(scic),
+ "%s: SCIC Controller 0x%p remote device started event "
+ "from device 0x%p in unexpected state %d\n",
+ __func__, scic, sci_dev, state);
+ }
+}
+
+/**
+ * This is a helper method to determine if any remote devices on this
+ * controller are still in the stopping state.
+ *
+ */
+bool scic_sds_controller_has_remote_devices_stopping(
+ struct scic_sds_controller *this_controller)
+{
+ u32 index;
+
+ for (index = 0; index < this_controller->remote_node_entries; index++) {
+ if ((this_controller->device_table[index] != NULL) &&
+ (this_controller->device_table[index]->parent.state_machine.current_state_id
+ == SCI_BASE_REMOTE_DEVICE_STATE_STOPPING))
+ return true;
+ }
+
+ return false;
+}
+
+/**
+ * This method is called by the remote device to inform the controller
+ * object that the remote device has stopped.
+ *
+ */
+
+void scic_sds_controller_remote_device_stopped(struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *sci_dev)
+{
+
+ u32 state;
+ scic_sds_controller_device_handler_t stopped;
+
+ state = scic->parent.state_machine.current_state_id;
+ stopped = scic_sds_controller_state_handler_table[state].remote_device_stopped_handler;
+
+ if (stopped)
+ stopped(scic, sci_dev);
+ else {
+ dev_dbg(scic_to_dev(scic),
+ "%s: SCIC Controller 0x%p remote device stopped event "
+ "from device 0x%p in unexpected state %d\n",
+ __func__, scic, sci_dev, state);
+ }
+}
+
+
+
+/**
+ * This method will write to the SCU PCP register the request value. The method
+ * is used to suspend/resume ports, devices, and phys.
+ * @this_controller:
+ *
+ *
+ */
+void scic_sds_controller_post_request(
+ struct scic_sds_controller *this_controller,
+ u32 request)
+{
+ dev_dbg(scic_to_dev(this_controller),
+ "%s: SCIC Controller 0x%p post request 0x%08x\n",
+ __func__,
+ this_controller,
+ request);
+
+ SMU_PCP_WRITE(this_controller, request);
+}
+
+/**
+ * This method will copy the soft copy of the task context into the physical
+ * memory accessible by the controller.
+ * @this_controller: This parameter specifies the controller for which to copy
+ * the task context.
+ * @this_request: This parameter specifies the request for which the task
+ * context is being copied.
+ *
+ * After this call is made the SCIC_SDS_IO_REQUEST object will always point to
+ * the physical memory version of the task context. Thus, all subsequent
+ * updates to the task context are performed in the TC table (i.e. DMAable
+ * memory). none
+ */
+void scic_sds_controller_copy_task_context(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_request *this_request)
+{
+ struct scu_task_context *task_context_buffer;
+
+ task_context_buffer = scic_sds_controller_get_task_context_buffer(
+ this_controller, this_request->io_tag
+ );
+
+ memcpy(
+ task_context_buffer,
+ this_request->task_context_buffer,
+ SCI_FIELD_OFFSET(struct scu_task_context, sgl_snapshot_ac)
+ );
+
+ /*
+ * Now that the soft copy of the TC has been copied into the TC
+ * table accessible by the silicon. Thus, any further changes to
+ * the TC (e.g. TC termination) occur in the appropriate location. */
+ this_request->task_context_buffer = task_context_buffer;
+}
+
+/**
+ * This method returns the task context buffer for the given io tag.
+ * @this_controller:
+ * @io_tag:
+ *
+ * struct scu_task_context*
+ */
+struct scu_task_context *scic_sds_controller_get_task_context_buffer(
+ struct scic_sds_controller *this_controller,
+ u16 io_tag
+ ) {
+ u16 task_index = scic_sds_io_tag_get_index(io_tag);
+
+ if (task_index < this_controller->task_context_entries) {
+ return &this_controller->task_context_table[task_index];
+ }
+
+ return NULL;
+}
+
+/**
+ * This method returnst the sequence value from the io tag value
+ * @this_controller:
+ * @io_tag:
+ *
+ * u16
+ */
+
+/**
+ * This method returns the IO request associated with the tag value
+ * @this_controller:
+ * @io_tag:
+ *
+ * SCIC_SDS_IO_REQUEST_T* NULL if there is no valid IO request at the tag value
+ */
+struct scic_sds_request *scic_sds_controller_get_io_request_from_tag(
+ struct scic_sds_controller *this_controller,
+ u16 io_tag
+ ) {
+ u16 task_index;
+ u16 task_sequence;
+
+ task_index = scic_sds_io_tag_get_index(io_tag);
+
+ if (task_index < this_controller->task_context_entries) {
+ if (this_controller->io_request_table[task_index] != NULL) {
+ task_sequence = scic_sds_io_tag_get_sequence(io_tag);
+
+ if (task_sequence == this_controller->io_request_sequence[task_index]) {
+ return this_controller->io_request_table[task_index];
+ }
+ }
+ }
+
+ return NULL;
+}
+
+/**
+ * This method allocates remote node index and the reserves the remote node
+ * context space for use. This method can fail if there are no more remote
+ * node index available.
+ * @this_controller: This is the controller object which contains the set of
+ * free remote node ids
+ * @the_devce: This is the device object which is requesting the a remote node
+ * id
+ * @node_id: This is the remote node id that is assinged to the device if one
+ * is available
+ *
+ * enum sci_status SCI_FAILURE_OUT_OF_RESOURCES if there are no available remote
+ * node index available.
+ */
+enum sci_status scic_sds_controller_allocate_remote_node_context(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_remote_device *the_device,
+ u16 *node_id)
+{
+ u16 node_index;
+ u32 remote_node_count = scic_sds_remote_device_node_count(the_device);
+
+ node_index = scic_sds_remote_node_table_allocate_remote_node(
+ &this_controller->available_remote_nodes, remote_node_count
+ );
+
+ if (node_index != SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) {
+ this_controller->device_table[node_index] = the_device;
+
+ *node_id = node_index;
+
+ return SCI_SUCCESS;
+ }
+
+ return SCI_FAILURE_INSUFFICIENT_RESOURCES;
+}
+
+/**
+ * This method frees the remote node index back to the available pool. Once
+ * this is done the remote node context buffer is no longer valid and can
+ * not be used.
+ * @this_controller:
+ * @the_device:
+ * @node_id:
+ *
+ */
+void scic_sds_controller_free_remote_node_context(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_remote_device *the_device,
+ u16 node_id)
+{
+ u32 remote_node_count = scic_sds_remote_device_node_count(the_device);
+
+ if (this_controller->device_table[node_id] == the_device) {
+ this_controller->device_table[node_id] = NULL;
+
+ scic_sds_remote_node_table_release_remote_node_index(
+ &this_controller->available_remote_nodes, remote_node_count, node_id
+ );
+ }
+}
+
+/**
+ * This method returns the union scu_remote_node_context for the specified remote
+ * node id.
+ * @this_controller:
+ * @node_id:
+ *
+ * union scu_remote_node_context*
+ */
+union scu_remote_node_context *scic_sds_controller_get_remote_node_context_buffer(
+ struct scic_sds_controller *this_controller,
+ u16 node_id
+ ) {
+ if (
+ (node_id < this_controller->remote_node_entries)
+ && (this_controller->device_table[node_id] != NULL)
+ ) {
+ return &this_controller->remote_node_context_table[node_id];
+ }
+
+ return NULL;
+}
+
+/**
+ *
+ * @resposne_buffer: This is the buffer into which the D2H register FIS will be
+ * constructed.
+ * @frame_header: This is the frame header returned by the hardware.
+ * @frame_buffer: This is the frame buffer returned by the hardware.
+ *
+ * This method will combind the frame header and frame buffer to create a SATA
+ * D2H register FIS none
+ */
+void scic_sds_controller_copy_sata_response(
+ void *response_buffer,
+ void *frame_header,
+ void *frame_buffer)
+{
+ memcpy(
+ response_buffer,
+ frame_header,
+ sizeof(u32)
+ );
+
+ memcpy(
+ (char *)((char *)response_buffer + sizeof(u32)),
+ frame_buffer,
+ sizeof(struct sata_fis_reg_d2h) - sizeof(u32)
+ );
+}
+
+/**
+ * This method releases the frame once this is done the frame is available for
+ * re-use by the hardware. The data contained in the frame header and frame
+ * buffer is no longer valid. The UF queue get pointer is only updated if UF
+ * control indicates this is appropriate.
+ * @this_controller:
+ * @frame_index:
+ *
+ */
+void scic_sds_controller_release_frame(
+ struct scic_sds_controller *this_controller,
+ u32 frame_index)
+{
+ if (scic_sds_unsolicited_frame_control_release_frame(
+ &this_controller->uf_control, frame_index) == true)
+ SCU_UFQGP_WRITE(this_controller, this_controller->uf_control.get);
+}
+
+/**
+ * This method sets user parameters and OEM parameters to default values.
+ * Users can override these values utilizing the scic_user_parameters_set()
+ * and scic_oem_parameters_set() methods.
+ * @controller: This parameter specifies the controller for which to set the
+ * configuration parameters to their default values.
+ *
+ */
+static void scic_sds_controller_set_default_config_parameters(struct scic_sds_controller *scic)
+{
+ u16 index;
+
+ /* Default to no SSC operation. */
+ scic->oem_parameters.sds1.controller.do_enable_ssc = false;
+
+ /* Initialize all of the port parameter information to narrow ports. */
+ for (index = 0; index < SCI_MAX_PORTS; index++) {
+ scic->oem_parameters.sds1.ports[index].phy_mask = 0;
+ }
+
+ /* Initialize all of the phy parameter information. */
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ /*
+ * Default to 3G (i.e. Gen 2) for now. User can override if
+ * they choose. */
+ scic->user_parameters.sds1.phys[index].max_speed_generation = 2;
+
+ /* the frequencies cannot be 0 */
+ scic->user_parameters.sds1.phys[index].align_insertion_frequency = 0x7f;
+ scic->user_parameters.sds1.phys[index].in_connection_align_insertion_frequency = 0xff;
+ scic->user_parameters.sds1.phys[index].notify_enable_spin_up_insertion_frequency = 0x33;
+
+ /*
+ * Previous Vitesse based expanders had a arbitration issue that
+ * is worked around by having the upper 32-bits of SAS address
+ * with a value greater then the Vitesse company identifier.
+ * Hence, usage of 0x5FCFFFFF. */
+ scic->oem_parameters.sds1.phys[index].sas_address.low = 0x00000001;
+ scic->oem_parameters.sds1.phys[index].sas_address.high = 0x5FCFFFFF;
+ }
+
+ scic->user_parameters.sds1.stp_inactivity_timeout = 5;
+ scic->user_parameters.sds1.ssp_inactivity_timeout = 5;
+ scic->user_parameters.sds1.stp_max_occupancy_timeout = 5;
+ scic->user_parameters.sds1.ssp_max_occupancy_timeout = 20;
+ scic->user_parameters.sds1.no_outbound_task_timeout = 20;
+}
+
+
+enum sci_status scic_controller_construct(struct scic_sds_controller *controller,
+ void __iomem *scu_base,
+ void __iomem *smu_base)
+{
+ u8 index;
+
+ sci_base_controller_construct(
+ &controller->parent,
+ scic_sds_controller_state_table,
+ controller->memory_descriptors,
+ ARRAY_SIZE(controller->memory_descriptors),
+ NULL
+ );
+
+ controller->scu_registers = scu_base;
+ controller->smu_registers = smu_base;
+
+ scic_sds_port_configuration_agent_construct(&controller->port_agent);
+
+ /* Construct the ports for this controller */
+ for (index = 0; index < SCI_MAX_PORTS; index++)
+ scic_sds_port_construct(&controller->port_table[index],
+ index, controller);
+ scic_sds_port_construct(&controller->port_table[index],
+ SCIC_SDS_DUMMY_PORT, controller);
+
+ /* Construct the phys for this controller */
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ /* Add all the PHYs to the dummy port */
+ scic_sds_phy_construct(
+ &controller->phy_table[index],
+ &controller->port_table[SCI_MAX_PORTS],
+ index
+ );
+ }
+
+ controller->invalid_phy_mask = 0;
+
+ /* Set the default maximum values */
+ controller->completion_event_entries = SCU_EVENT_COUNT;
+ controller->completion_queue_entries = SCU_COMPLETION_QUEUE_COUNT;
+ controller->remote_node_entries = SCI_MAX_REMOTE_DEVICES;
+ controller->logical_port_entries = SCI_MAX_PORTS;
+ controller->task_context_entries = SCU_IO_REQUEST_COUNT;
+ controller->uf_control.buffers.count = SCU_UNSOLICITED_FRAME_COUNT;
+ controller->uf_control.address_table.count = SCU_UNSOLICITED_FRAME_COUNT;
+
+ /* Initialize the User and OEM parameters to default values. */
+ scic_sds_controller_set_default_config_parameters(controller);
+
+ return SCI_SUCCESS;
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_initialize(
+ struct scic_sds_controller *scic)
+{
+ enum sci_status status = SCI_FAILURE_INVALID_STATE;
+ sci_base_controller_handler_t initialize;
+ u32 state;
+
+ state = scic->parent.state_machine.current_state_id;
+ initialize = scic_sds_controller_state_handler_table[state].base.initialize;
+
+ if (initialize)
+ status = initialize(&scic->parent);
+ else
+ dev_warn(scic_to_dev(scic),
+ "%s: SCIC Controller initialize operation requested "
+ "in invalid state %d\n",
+ __func__,
+ sci_base_state_machine_get_state(
+ scic_sds_controller_get_base_state_machine(
+ scic)));
+
+ return status;
+}
+
+/* --------------------------------------------------------------------------- */
+
+u32 scic_controller_get_suggested_start_timeout(
+ struct scic_sds_controller *sc)
+{
+ /* Validate the user supplied parameters. */
+ if (sc == NULL)
+ return 0;
+
+ /*
+ * The suggested minimum timeout value for a controller start operation:
+ *
+ * Signature FIS Timeout
+ * + Phy Start Timeout
+ * + Number of Phy Spin Up Intervals
+ * ---------------------------------
+ * Number of milliseconds for the controller start operation.
+ *
+ * NOTE: The number of phy spin up intervals will be equivalent
+ * to the number of phys divided by the number phys allowed
+ * per interval - 1 (once OEM parameters are supported).
+ * Currently we assume only 1 phy per interval. */
+
+ return SCIC_SDS_SIGNATURE_FIS_TIMEOUT
+ + SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT
+ + ((SCI_MAX_PHYS - 1) * SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL);
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_start(
+ struct scic_sds_controller *scic,
+ u32 timeout)
+{
+ enum sci_status status = SCI_FAILURE_INVALID_STATE;
+ sci_base_controller_timed_handler_t start;
+ u32 state;
+
+ state = scic->parent.state_machine.current_state_id;
+ start = scic_sds_controller_state_handler_table[state].base.start;
+
+ if (start)
+ status = start(&scic->parent, timeout);
+ else
+ dev_warn(scic_to_dev(scic),
+ "%s: SCIC Controller start operation requested in "
+ "invalid state %d\n",
+ __func__,
+ sci_base_state_machine_get_state(
+ scic_sds_controller_get_base_state_machine(
+ scic)));
+
+ return status;
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_stop(
+ struct scic_sds_controller *scic,
+ u32 timeout)
+{
+ enum sci_status status = SCI_FAILURE_INVALID_STATE;
+ sci_base_controller_timed_handler_t stop;
+ u32 state;
+
+ state = scic->parent.state_machine.current_state_id;
+ stop = scic_sds_controller_state_handler_table[state].base.stop;
+
+ if (stop)
+ status = stop(&scic->parent, timeout);
+ else
+ dev_warn(scic_to_dev(scic),
+ "%s: SCIC Controller stop operation requested in "
+ "invalid state %d\n",
+ __func__,
+ sci_base_state_machine_get_state(
+ scic_sds_controller_get_base_state_machine(
+ scic)));
+
+ return status;
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_reset(
+ struct scic_sds_controller *scic)
+{
+ enum sci_status status = SCI_FAILURE_INVALID_STATE;
+ sci_base_controller_handler_t reset;
+ u32 state;
+
+ state = scic->parent.state_machine.current_state_id;
+ reset = scic_sds_controller_state_handler_table[state].base.reset;
+
+ if (reset)
+ status = reset(&scic->parent);
+ else
+ dev_warn(scic_to_dev(scic),
+ "%s: SCIC Controller reset operation requested in "
+ "invalid state %d\n",
+ __func__,
+ sci_base_state_machine_get_state(
+ scic_sds_controller_get_base_state_machine(
+ scic)));
+
+ return status;
+}
+
+enum sci_io_status scic_controller_start_io(
+ struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *remote_device,
+ struct scic_sds_request *io_request,
+ u16 io_tag)
+{
+ u32 state;
+ sci_base_controller_start_request_handler_t start_io;
+
+ state = scic->parent.state_machine.current_state_id;
+ start_io = scic_sds_controller_state_handler_table[state].base.start_io;
+
+ return start_io(&scic->parent,
+ (struct sci_base_remote_device *) remote_device,
+ (struct sci_base_request *)io_request, io_tag);
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_terminate_request(
+ struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *remote_device,
+ struct scic_sds_request *request)
+{
+ sci_base_controller_request_handler_t terminate_request;
+ u32 state;
+
+ state = scic->parent.state_machine.current_state_id;
+ terminate_request = scic_sds_controller_state_handler_table[state].terminate_request;
+
+ return terminate_request(&scic->parent,
+ (struct sci_base_remote_device *)remote_device,
+ (struct sci_base_request *)request);
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_complete_io(
+ struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *remote_device,
+ struct scic_sds_request *io_request)
+{
+ u32 state;
+ sci_base_controller_request_handler_t complete_io;
+
+ state = scic->parent.state_machine.current_state_id;
+ complete_io = scic_sds_controller_state_handler_table[state].base.complete_io;
+
+ return complete_io(&scic->parent,
+ (struct sci_base_remote_device *)remote_device,
+ (struct sci_base_request *)io_request);
+}
+
+/* --------------------------------------------------------------------------- */
+
+
+enum sci_task_status scic_controller_start_task(
+ struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *remote_device,
+ struct scic_sds_request *task_request,
+ u16 task_tag)
+{
+ u32 state;
+ sci_base_controller_start_request_handler_t start_task;
+ enum sci_task_status status = SCI_TASK_FAILURE_INVALID_STATE;
+
+ state = scic->parent.state_machine.current_state_id;
+ start_task = scic_sds_controller_state_handler_table[state].base.start_task;
+
+ if (start_task)
+ status = start_task(&scic->parent,
+ (struct sci_base_remote_device *)remote_device,
+ (struct sci_base_request *)task_request,
+ task_tag);
+ else
+ dev_warn(scic_to_dev(scic),
+ "%s: SCIC Controller starting task from invalid "
+ "state\n",
+ __func__);
+
+ return status;
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_complete_task(
+ struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *remote_device,
+ struct scic_sds_request *task_request)
+{
+ u32 state;
+ sci_base_controller_request_handler_t complete_task;
+ enum sci_status status = SCI_FAILURE_INVALID_STATE;
+
+ state = scic->parent.state_machine.current_state_id;
+ complete_task = scic_sds_controller_state_handler_table[state].base.complete_task;
+
+ if (complete_task)
+ status = complete_task(&scic->parent,
+ (struct sci_base_remote_device *)remote_device,
+ (struct sci_base_request *)task_request);
+ else
+ dev_warn(scic_to_dev(scic),
+ "%s: SCIC Controller completing task from invalid "
+ "state\n",
+ __func__);
+
+ return status;
+}
+
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_get_port_handle(
+ struct scic_sds_controller *scic,
+ u8 port_index,
+ struct scic_sds_port **port_handle)
+{
+ if (port_index < scic->logical_port_entries) {
+ *port_handle = &scic->port_table[port_index];
+
+ return SCI_SUCCESS;
+ }
+
+ return SCI_FAILURE_INVALID_PORT;
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_get_phy_handle(
+ struct scic_sds_controller *scic,
+ u8 phy_index,
+ struct scic_sds_phy **phy_handle)
+{
+ if (phy_index < ARRAY_SIZE(scic->phy_table)) {
+ *phy_handle = &scic->phy_table[phy_index];
+
+ return SCI_SUCCESS;
+ }
+
+ dev_err(scic_to_dev(scic),
+ "%s: Controller:0x%p PhyId:0x%x invalid phy index\n",
+ __func__, scic, phy_index);
+
+ return SCI_FAILURE_INVALID_PHY;
+}
+
+/* --------------------------------------------------------------------------- */
+
+u16 scic_controller_allocate_io_tag(
+ struct scic_sds_controller *scic)
+{
+ u16 task_context;
+ u16 sequence_count;
+
+ if (!sci_pool_empty(scic->tci_pool)) {
+ sci_pool_get(scic->tci_pool, task_context);
+
+ sequence_count = scic->io_request_sequence[task_context];
+
+ return scic_sds_io_tag_construct(sequence_count, task_context);
+ }
+
+ return SCI_CONTROLLER_INVALID_IO_TAG;
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_free_io_tag(
+ struct scic_sds_controller *scic,
+ u16 io_tag)
+{
+ u16 sequence;
+ u16 index;
+
+ BUG_ON(io_tag == SCI_CONTROLLER_INVALID_IO_TAG);
+
+ sequence = scic_sds_io_tag_get_sequence(io_tag);
+ index = scic_sds_io_tag_get_index(io_tag);
+
+ if (!sci_pool_full(scic->tci_pool)) {
+ if (sequence == scic->io_request_sequence[index]) {
+ scic_sds_io_sequence_increment(
+ scic->io_request_sequence[index]);
+
+ sci_pool_put(scic->tci_pool, index);
+
+ return SCI_SUCCESS;
+ }
+ }
+
+ return SCI_FAILURE_INVALID_IO_TAG;
+}
+
+/* --------------------------------------------------------------------------- */
+
+void scic_controller_enable_interrupts(
+ struct scic_sds_controller *scic)
+{
+ BUG_ON(scic->smu_registers == NULL);
+ SMU_IMR_WRITE(scic, 0x00000000);
+}
+
+/* --------------------------------------------------------------------------- */
+
+void scic_controller_disable_interrupts(
+ struct scic_sds_controller *scic)
+{
+ BUG_ON(scic->smu_registers == NULL);
+ SMU_IMR_WRITE(scic, 0xffffffff);
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_controller_set_mode(
+ struct scic_sds_controller *scic,
+ enum sci_controller_mode operating_mode)
+{
+ enum sci_status status = SCI_SUCCESS;
+
+ if ((scic->parent.state_machine.current_state_id ==
+ SCI_BASE_CONTROLLER_STATE_INITIALIZING) ||
+ (scic->parent.state_machine.current_state_id ==
+ SCI_BASE_CONTROLLER_STATE_INITIALIZED)) {
+ switch (operating_mode) {
+ case SCI_MODE_SPEED:
+ scic->remote_node_entries = SCI_MAX_REMOTE_DEVICES;
+ scic->task_context_entries = SCU_IO_REQUEST_COUNT;
+ scic->uf_control.buffers.count =
+ SCU_UNSOLICITED_FRAME_COUNT;
+ scic->completion_event_entries = SCU_EVENT_COUNT;
+ scic->completion_queue_entries =
+ SCU_COMPLETION_QUEUE_COUNT;
+ scic_sds_controller_build_memory_descriptor_table(scic);
+ break;
+
+ case SCI_MODE_SIZE:
+ scic->remote_node_entries = SCI_MIN_REMOTE_DEVICES;
+ scic->task_context_entries = SCI_MIN_IO_REQUESTS;
+ scic->uf_control.buffers.count =
+ SCU_MIN_UNSOLICITED_FRAMES;
+ scic->completion_event_entries = SCU_MIN_EVENTS;
+ scic->completion_queue_entries =
+ SCU_MIN_COMPLETION_QUEUE_ENTRIES;
+ scic_sds_controller_build_memory_descriptor_table(scic);
+ break;
+
+ default:
+ status = SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ break;
+ }
+ } else
+ status = SCI_FAILURE_INVALID_STATE;
+
+ return status;
+}
+
+/**
+ * scic_sds_controller_reset_hardware() -
+ *
+ * This method will reset the controller hardware.
+ */
+void scic_sds_controller_reset_hardware(
+ struct scic_sds_controller *scic)
+{
+ /* Disable interrupts so we dont take any spurious interrupts */
+ scic_controller_disable_interrupts(scic);
+
+ /* Reset the SCU */
+ SMU_SMUSRCR_WRITE(scic, 0xFFFFFFFF);
+
+ /* Delay for 1ms to before clearing the CQP and UFQPR. */
+ udelay(1000);
+
+ /* The write to the CQGR clears the CQP */
+ SMU_CQGR_WRITE(scic, 0x00000000);
+
+ /* The write to the UFQGP clears the UFQPR */
+ SCU_UFQGP_WRITE(scic, 0x00000000);
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_user_parameters_set(
+ struct scic_sds_controller *scic,
+ union scic_user_parameters *scic_parms)
+{
+ if (
+ (scic->parent.state_machine.current_state_id
+ == SCI_BASE_CONTROLLER_STATE_RESET)
+ || (scic->parent.state_machine.current_state_id
+ == SCI_BASE_CONTROLLER_STATE_INITIALIZING)
+ || (scic->parent.state_machine.current_state_id
+ == SCI_BASE_CONTROLLER_STATE_INITIALIZED)
+ ) {
+ u16 index;
+
+ /*
+ * Validate the user parameters. If they are not legal, then
+ * return a failure. */
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ if (!(scic_parms->sds1.phys[index].max_speed_generation
+ <= SCIC_SDS_PARM_MAX_SPEED
+ && scic_parms->sds1.phys[index].max_speed_generation
+ > SCIC_SDS_PARM_NO_SPEED))
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+ if (scic_parms->sds1.phys[index].in_connection_align_insertion_frequency < 3)
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ if (
+ (scic_parms->sds1.phys[index].in_connection_align_insertion_frequency < 3) ||
+ (scic_parms->sds1.phys[index].align_insertion_frequency == 0) ||
+ (scic_parms->sds1.phys[index].notify_enable_spin_up_insertion_frequency == 0)
+ )
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ }
+
+ if ((scic_parms->sds1.stp_inactivity_timeout == 0) ||
+ (scic_parms->sds1.ssp_inactivity_timeout == 0) ||
+ (scic_parms->sds1.stp_max_occupancy_timeout == 0) ||
+ (scic_parms->sds1.ssp_max_occupancy_timeout == 0) ||
+ (scic_parms->sds1.no_outbound_task_timeout == 0))
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+ memcpy(&scic->user_parameters, scic_parms, sizeof(*scic_parms));
+
+ return SCI_SUCCESS;
+ }
+
+ return SCI_FAILURE_INVALID_STATE;
+}
+
+/* --------------------------------------------------------------------------- */
+
+void scic_user_parameters_get(
+ struct scic_sds_controller *scic,
+ union scic_user_parameters *scic_parms)
+{
+ memcpy(scic_parms, (&scic->user_parameters), sizeof(*scic_parms));
+}
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_oem_parameters_set(
+ struct scic_sds_controller *scic,
+ union scic_oem_parameters *scic_parms)
+{
+ if (
+ (scic->parent.state_machine.current_state_id
+ == SCI_BASE_CONTROLLER_STATE_RESET)
+ || (scic->parent.state_machine.current_state_id
+ == SCI_BASE_CONTROLLER_STATE_INITIALIZING)
+ || (scic->parent.state_machine.current_state_id
+ == SCI_BASE_CONTROLLER_STATE_INITIALIZED)
+ ) {
+ u16 index;
+
+ /*
+ * Validate the oem parameters. If they are not legal, then
+ * return a failure. */
+ for (index = 0; index < SCI_MAX_PORTS; index++) {
+ if (scic_parms->sds1.ports[index].phy_mask > SCIC_SDS_PARM_PHY_MASK_MAX) {
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ }
+ }
+
+ for (index = 0; index < SCI_MAX_PHYS; index++) {
+ if (
+ scic_parms->sds1.phys[index].sas_address.high == 0
+ && scic_parms->sds1.phys[index].sas_address.low == 0
+ ) {
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ }
+ }
+
+ memcpy(&scic->oem_parameters, scic_parms, sizeof(*scic_parms));
+ return SCI_SUCCESS;
+ }
+
+ return SCI_FAILURE_INVALID_STATE;
+}
+
+/* --------------------------------------------------------------------------- */
+
+void scic_oem_parameters_get(
+ struct scic_sds_controller *scic,
+ union scic_oem_parameters *scic_parms)
+{
+ memcpy(scic_parms, (&scic->oem_parameters), sizeof(*scic_parms));
+}
+
+/* --------------------------------------------------------------------------- */
+
+
+#define INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_LOWER_BOUND_NS 853
+#define INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_UPPER_BOUND_NS 1280
+#define INTERRUPT_COALESCE_TIMEOUT_MAX_US 2700000
+#define INTERRUPT_COALESCE_NUMBER_MAX 256
+#define INTERRUPT_COALESCE_TIMEOUT_ENCODE_MIN 7
+#define INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX 28
+
+enum sci_status scic_controller_set_interrupt_coalescence(
+ struct scic_sds_controller *scic_controller,
+ u32 coalesce_number,
+ u32 coalesce_timeout)
+{
+ u8 timeout_encode = 0;
+ u32 min = 0;
+ u32 max = 0;
+
+ /* Check if the input parameters fall in the range. */
+ if (coalesce_number > INTERRUPT_COALESCE_NUMBER_MAX)
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+ /*
+ * Defined encoding for interrupt coalescing timeout:
+ * Value Min Max Units
+ * ----- --- --- -----
+ * 0 - - Disabled
+ * 1 13.3 20.0 ns
+ * 2 26.7 40.0
+ * 3 53.3 80.0
+ * 4 106.7 160.0
+ * 5 213.3 320.0
+ * 6 426.7 640.0
+ * 7 853.3 1280.0
+ * 8 1.7 2.6 us
+ * 9 3.4 5.1
+ * 10 6.8 10.2
+ * 11 13.7 20.5
+ * 12 27.3 41.0
+ * 13 54.6 81.9
+ * 14 109.2 163.8
+ * 15 218.5 327.7
+ * 16 436.9 655.4
+ * 17 873.8 1310.7
+ * 18 1.7 2.6 ms
+ * 19 3.5 5.2
+ * 20 7.0 10.5
+ * 21 14.0 21.0
+ * 22 28.0 41.9
+ * 23 55.9 83.9
+ * 24 111.8 167.8
+ * 25 223.7 335.5
+ * 26 447.4 671.1
+ * 27 894.8 1342.2
+ * 28 1.8 2.7 s
+ * Others Undefined */
+
+ /*
+ * Use the table above to decide the encode of interrupt coalescing timeout
+ * value for register writing. */
+ if (coalesce_timeout == 0)
+ timeout_encode = 0;
+ else{
+ /* make the timeout value in unit of (10 ns). */
+ coalesce_timeout = coalesce_timeout * 100;
+ min = INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_LOWER_BOUND_NS / 10;
+ max = INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_UPPER_BOUND_NS / 10;
+
+ /* get the encode of timeout for register writing. */
+ for (timeout_encode = INTERRUPT_COALESCE_TIMEOUT_ENCODE_MIN;
+ timeout_encode <= INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX;
+ timeout_encode++) {
+ if (min <= coalesce_timeout && max > coalesce_timeout)
+ break;
+ else if (coalesce_timeout >= max && coalesce_timeout < min * 2
+ && coalesce_timeout <= INTERRUPT_COALESCE_TIMEOUT_MAX_US * 100) {
+ if ((coalesce_timeout - max) < (2 * min - coalesce_timeout))
+ break;
+ else{
+ timeout_encode++;
+ break;
+ }
+ } else {
+ max = max * 2;
+ min = min * 2;
+ }
+ }
+
+ if (timeout_encode == INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX + 1)
+ /* the value is out of range. */
+ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ }
+
+ SMU_ICC_WRITE(
+ scic_controller,
+ (SMU_ICC_GEN_VAL(NUMBER, coalesce_number) |
+ SMU_ICC_GEN_VAL(TIMER, timeout_encode))
+ );
+
+ scic_controller->interrupt_coalesce_number = (u16)coalesce_number;
+ scic_controller->interrupt_coalesce_timeout = coalesce_timeout / 100;
+
+ return SCI_SUCCESS;
+}
+
+
+struct scic_sds_controller *scic_controller_alloc(struct device *dev)
+{
+ return devm_kzalloc(dev, sizeof(struct scic_sds_controller), GFP_KERNEL);
+}
+
+/*
+ * *****************************************************************************
+ * * DEFAULT STATE HANDLERS
+ * ***************************************************************************** */
+
+/**
+ *
+ * @controller: This is struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @remote_device: This is struct sci_base_remote_device which, if it was used, would
+ * be cast to a struct scic_sds_remote_device.
+ * @io_request: This is the struct sci_base_request which, if it was used, would be
+ * cast to a SCIC_SDS_IO_REQUEST.
+ * @io_tag: This is the IO tag to be assigned to the IO request or
+ * SCI_CONTROLLER_INVALID_IO_TAG.
+ *
+ * This method is called when the struct scic_sds_controller default start io/task
+ * handler is in place. - Issue a warning message enum sci_status
+ * SCI_FAILURE_INVALID_STATE
+ */
+static enum sci_status scic_sds_controller_default_start_operation_handler(
+ struct sci_base_controller *controller,
+ struct sci_base_remote_device *remote_device,
+ struct sci_base_request *io_request,
+ u16 io_tag)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)controller;
+
+ dev_warn(scic_to_dev(this_controller),
+ "%s: SCIC Controller requested to start an io/task from "
+ "invalid state %d\n",
+ __func__,
+ sci_base_state_machine_get_state(
+ scic_sds_controller_get_base_state_machine(
+ this_controller)));
+
+ return SCI_FAILURE_INVALID_STATE;
+}
+
+/**
+ *
+ * @controller: This is struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @remote_device: This is struct sci_base_remote_device which, if it was used, would
+ * be cast to a struct scic_sds_remote_device.
+ * @io_request: This is the struct sci_base_request which, if it was used, would be
+ * cast to a SCIC_SDS_IO_REQUEST.
+ *
+ * This method is called when the struct scic_sds_controller default request handler
+ * is in place. - Issue a warning message enum sci_status SCI_FAILURE_INVALID_STATE
+ */
+static enum sci_status scic_sds_controller_default_request_handler(
+ struct sci_base_controller *controller,
+ struct sci_base_remote_device *remote_device,
+ struct sci_base_request *io_request)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)controller;
+
+ dev_warn(scic_to_dev(this_controller),
+ "%s: SCIC Controller request operation from invalid state %d\n",
+ __func__,
+ sci_base_state_machine_get_state(
+ scic_sds_controller_get_base_state_machine(
+ this_controller)));
+
+ return SCI_FAILURE_INVALID_STATE;
+}
+
+/*
+ * *****************************************************************************
+ * * GENERAL (COMMON) STATE HANDLERS
+ * ***************************************************************************** */
+
+/**
+ *
+ * @controller: The struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ *
+ * This method is called when the struct scic_sds_controller is in the ready state
+ * reset handler is in place. - Transition to
+ * SCI_BASE_CONTROLLER_STATE_RESETTING enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_controller_general_reset_handler(
+ struct sci_base_controller *controller)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)controller;
+
+ /*
+ * The reset operation is not a graceful cleanup just perform the state
+ * transition. */
+ sci_base_state_machine_change_state(
+ scic_sds_controller_get_base_state_machine(this_controller),
+ SCI_BASE_CONTROLLER_STATE_RESETTING
+ );
+
+ return SCI_SUCCESS;
+}
+
+/*
+ * *****************************************************************************
+ * * RESET STATE HANDLERS
+ * ***************************************************************************** */
+
+/**
+ *
+ * @controller: This is the struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ *
+ * This method is the struct scic_sds_controller initialize handler for the reset
+ * state. - Currently this function does nothing enum sci_status SCI_FAILURE This
+ * function is not yet implemented and is a valid request from the reset state.
+ */
+static enum sci_status scic_sds_controller_reset_state_initialize_handler(
+ struct sci_base_controller *controller)
+{
+ u32 index;
+ enum sci_status result = SCI_SUCCESS;
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)controller;
+
+ sci_base_state_machine_change_state(
+ scic_sds_controller_get_base_state_machine(this_controller),
+ SCI_BASE_CONTROLLER_STATE_INITIALIZING
+ );
+
+ this_controller->timeout_timer = isci_event_timer_create(
+ this_controller,
+ (void (*)(void *))scic_sds_controller_timeout_handler,
+ (void (*)(void *))controller);
+
+ scic_sds_controller_initialize_phy_startup(this_controller);
+
+ scic_sds_controller_initialize_power_control(this_controller);
+
+ /*
+ * There is nothing to do here for B0 since we do not have to
+ * program the AFE registers.
+ * / @todo The AFE settings are supposed to be correct for the B0 but
+ * / presently they seem to be wrong. */
+ scic_sds_controller_afe_initialization(this_controller);
+
+ if (SCI_SUCCESS == result) {
+ u32 status;
+ u32 terminate_loop;
+
+ /* Take the hardware out of reset */
+ SMU_SMUSRCR_WRITE(this_controller, 0x00000000);
+
+ /*
+ * / @todo Provide meaningfull error code for hardware failure
+ * result = SCI_FAILURE_CONTROLLER_HARDWARE; */
+ result = SCI_FAILURE;
+ terminate_loop = 100;
+
+ while (terminate_loop-- && (result != SCI_SUCCESS)) {
+ /* Loop until the hardware reports success */
+ udelay(SCU_CONTEXT_RAM_INIT_STALL_TIME);
+ status = SMU_SMUCSR_READ(this_controller);
+
+ if ((status & SCU_RAM_INIT_COMPLETED) == SCU_RAM_INIT_COMPLETED) {
+ result = SCI_SUCCESS;
+ }
+ }
+ }
+
+ if (result == SCI_SUCCESS) {
+ u32 max_supported_ports;
+ u32 max_supported_devices;
+ u32 max_supported_io_requests;
+ u32 device_context_capacity;
+
+ /*
+ * Determine what are the actaul device capacities that the
+ * hardware will support */
+ device_context_capacity = SMU_DCC_READ(this_controller);
+
+ max_supported_ports =
+ smu_dcc_get_max_ports(device_context_capacity);
+ max_supported_devices =
+ smu_dcc_get_max_remote_node_context(device_context_capacity);
+ max_supported_io_requests =
+ smu_dcc_get_max_task_context(device_context_capacity);
+
+ /* Make all PEs that are unassigned match up with the logical ports */
+ for (index = 0; index < max_supported_ports; index++) {
+ scu_register_write(
+ this_controller,
+ this_controller->scu_registers->peg0.ptsg.protocol_engine[index],
+ index
+ );
+ }
+
+ /* Record the smaller of the two capacity values */
+ this_controller->logical_port_entries =
+ min(max_supported_ports, this_controller->logical_port_entries);
+
+ this_controller->task_context_entries =
+ min(max_supported_io_requests, this_controller->task_context_entries);
+
+ this_controller->remote_node_entries =
+ min(max_supported_devices, this_controller->remote_node_entries);
+
+ /*
+ * Now that we have the correct hardware reported minimum values
+ * build the MDL for the controller. Default to a performance
+ * configuration. */
+ scic_controller_set_mode(this_controller, SCI_MODE_SPEED);
+ }
+
+ /* Initialize hardware PCI Relaxed ordering in DMA engines */
+ if (result == SCI_SUCCESS) {
+ u32 dma_configuration;
+
+ /* Configure the payload DMA */
+ dma_configuration = SCU_PDMACR_READ(this_controller);
+ dma_configuration |= SCU_PDMACR_GEN_BIT(PCI_RELAXED_ORDERING_ENABLE);
+ SCU_PDMACR_WRITE(this_controller, dma_configuration);
+
+ /* Configure the control DMA */
+ dma_configuration = SCU_CDMACR_READ(this_controller);
+ dma_configuration |= SCU_CDMACR_GEN_BIT(PCI_RELAXED_ORDERING_ENABLE);
+ SCU_CDMACR_WRITE(this_controller, dma_configuration);
+ }
+
+ /*
+ * Initialize the PHYs before the PORTs because the PHY registers
+ * are accessed during the port initialization. */
+ if (result == SCI_SUCCESS) {
+ /* Initialize the phys */
+ for (index = 0;
+ (result == SCI_SUCCESS) && (index < SCI_MAX_PHYS);
+ index++) {
+ result = scic_sds_phy_initialize(
+ &this_controller->phy_table[index],
+ &this_controller->scu_registers->peg0.pe[index].tl,
+ &this_controller->scu_registers->peg0.pe[index].ll
+ );
+ }
+ }
+
+ if (result == SCI_SUCCESS) {
+ /* Initialize the logical ports */
+ for (index = 0;
+ (index < this_controller->logical_port_entries)
+ && (result == SCI_SUCCESS);
+ index++) {
+ result = scic_sds_port_initialize(
+ &this_controller->port_table[index],
+ &this_controller->scu_registers->peg0.ptsg.port[index],
+ &this_controller->scu_registers->peg0.ptsg.protocol_engine,
+ &this_controller->scu_registers->peg0.viit[index]
+ );
+ }
+ }
+
+ if (SCI_SUCCESS == result) {
+ result = scic_sds_port_configuration_agent_initialize(
+ this_controller,
+ &this_controller->port_agent
+ );
+ }
+
+ /* Advance the controller state machine */
+ if (result == SCI_SUCCESS) {
+ sci_base_state_machine_change_state(
+ scic_sds_controller_get_base_state_machine(this_controller),
+ SCI_BASE_CONTROLLER_STATE_INITIALIZED
+ );
+ } else {
+ sci_base_state_machine_change_state(
+ scic_sds_controller_get_base_state_machine(this_controller),
+ SCI_BASE_CONTROLLER_STATE_FAILED
+ );
+ }
+
+ return result;
+}
+
+/*
+ * *****************************************************************************
+ * * INITIALIZED STATE HANDLERS
+ * ***************************************************************************** */
+
+/**
+ *
+ * @controller: This is the struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @timeout: This is the allowed time for the controller object to reach the
+ * started state.
+ *
+ * This method is the struct scic_sds_controller start handler for the initialized
+ * state. - Validate we have a good memory descriptor table - Initialze the
+ * physical memory before programming the hardware - Program the SCU hardware
+ * with the physical memory addresses passed in the memory descriptor table. -
+ * Initialzie the TCi pool - Initialize the RNi pool - Initialize the
+ * completion queue - Initialize the unsolicited frame data - Take the SCU port
+ * task scheduler out of reset - Start the first phy object. - Transition to
+ * SCI_BASE_CONTROLLER_STATE_STARTING. enum sci_status SCI_SUCCESS if all of the
+ * controller start operations complete
+ * SCI_FAILURE_UNSUPPORTED_INFORMATION_FIELD if one or more of the memory
+ * descriptor fields is invalid.
+ */
+static enum sci_status scic_sds_controller_initialized_state_start_handler(
+ struct sci_base_controller *controller,
+ u32 timeout)
+{
+ u16 index;
+ enum sci_status result;
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)controller;
+
+ /* Make sure that the SCI User filled in the memory descriptor table correctly */
+ result = scic_sds_controller_validate_memory_descriptor_table(this_controller);
+
+ if (result == SCI_SUCCESS) {
+ /* The memory descriptor list looks good so program the hardware */
+ scic_sds_controller_ram_initialization(this_controller);
+ }
+
+ if (result == SCI_SUCCESS) {
+ /* Build the TCi free pool */
+ sci_pool_initialize(this_controller->tci_pool);
+ for (index = 0; index < this_controller->task_context_entries; index++) {
+ sci_pool_put(this_controller->tci_pool, index);
+ }
+
+ /* Build the RNi free pool */
+ scic_sds_remote_node_table_initialize(
+ &this_controller->available_remote_nodes,
+ this_controller->remote_node_entries
+ );
+ }
+
+ if (result == SCI_SUCCESS) {
+ /*
+ * Before anything else lets make sure we will not be interrupted
+ * by the hardware. */
+ scic_controller_disable_interrupts(this_controller);
+
+ /* Enable the port task scheduler */
+ scic_sds_controller_enable_port_task_scheduler(this_controller);
+
+ /* Assign all the task entries to this controller physical function */
+ scic_sds_controller_assign_task_entries(this_controller);
+
+ /* Now initialze the completion queue */
+ scic_sds_controller_initialize_completion_queue(this_controller);
+
+ /* Initialize the unsolicited frame queue for use */
+ scic_sds_controller_initialize_unsolicited_frame_queue(this_controller);
+ }
+
+ /* Start all of the ports on this controller */
+ for (index = 0; index < this_controller->logical_port_entries &&
+ result == SCI_SUCCESS; index++) {
+ struct scic_sds_port *sci_port = &this_controller->port_table[index];
+
+ result = sci_port->state_handlers->parent.start_handler(&sci_port->parent);
+ }
+
+ if (result == SCI_SUCCESS) {
+ scic_sds_controller_start_next_phy(this_controller);
+
+ isci_event_timer_start(this_controller,
+ this_controller->timeout_timer,
+ timeout);
+
+ sci_base_state_machine_change_state(
+ scic_sds_controller_get_base_state_machine(this_controller),
+ SCI_BASE_CONTROLLER_STATE_STARTING
+ );
+ }
+
+ return result;
+}
+
+/*
+ * *****************************************************************************
+ * * INITIALIZED STATE HANDLERS
+ * ***************************************************************************** */
+
+/**
+ *
+ * @controller: This is struct scic_sds_controller which receives the link up
+ * notification.
+ * @port: This is struct scic_sds_port with which the phy is associated.
+ * @phy: This is the struct scic_sds_phy which has gone link up.
+ *
+ * This method is called when the struct scic_sds_controller is in the starting state
+ * link up handler is called. This method will perform the following: - Stop
+ * the phy timer - Start the next phy - Report the link up condition to the
+ * port object none
+ */
+static void scic_sds_controller_starting_state_link_up_handler(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ scic_sds_controller_phy_timer_stop(this_controller);
+
+ this_controller->port_agent.link_up_handler(
+ this_controller, &this_controller->port_agent, port, phy
+ );
+ /* scic_sds_port_link_up(port, phy); */
+
+ scic_sds_controller_start_next_phy(this_controller);
+}
+
+/**
+ *
+ * @controller: This is struct scic_sds_controller which receives the link down
+ * notification.
+ * @port: This is struct scic_sds_port with which the phy is associated.
+ * @phy: This is the struct scic_sds_phy which has gone link down.
+ *
+ * This method is called when the struct scic_sds_controller is in the starting state
+ * link down handler is called. - Report the link down condition to the port
+ * object none
+ */
+static void scic_sds_controller_starting_state_link_down_handler(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ this_controller->port_agent.link_down_handler(
+ this_controller, &this_controller->port_agent, port, phy
+ );
+ /* scic_sds_port_link_down(port, phy); */
+}
+
+/*
+ * *****************************************************************************
+ * * READY STATE HANDLERS
+ * ***************************************************************************** */
+
+/**
+ *
+ * @controller: The struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @timeout: The timeout for when the stop operation should report a failure.
+ *
+ * This method is called when the struct scic_sds_controller is in the ready state
+ * stop handler is called. - Start the timeout timer - Transition to
+ * SCI_BASE_CONTROLLER_STATE_STOPPING. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_controller_ready_state_stop_handler(
+ struct sci_base_controller *controller,
+ u32 timeout)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)controller;
+
+ isci_event_timer_start(this_controller,
+ this_controller->timeout_timer,
+ timeout);
+
+ sci_base_state_machine_change_state(
+ scic_sds_controller_get_base_state_machine(this_controller),
+ SCI_BASE_CONTROLLER_STATE_STOPPING
+ );
+
+ return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @controller: This is struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @remote_device: This is struct sci_base_remote_device which is cast to a
+ * struct scic_sds_remote_device object.
+ * @io_request: This is the struct sci_base_request which is cast to a
+ * SCIC_SDS_IO_REQUEST object.
+ * @io_tag: This is the IO tag to be assigned to the IO request or
+ * SCI_CONTROLLER_INVALID_IO_TAG.
+ *
+ * This method is called when the struct scic_sds_controller is in the ready state and
+ * the start io handler is called. - Start the io request on the remote device
+ * - if successful - assign the io_request to the io_request_table - post the
+ * request to the hardware enum sci_status SCI_SUCCESS if the start io operation
+ * succeeds SCI_FAILURE_INSUFFICIENT_RESOURCES if the IO tag could not be
+ * allocated for the io request. SCI_FAILURE_INVALID_STATE if one or more
+ * objects are not in a valid state to accept io requests. How does the io_tag
+ * parameter get assigned to the io request?
+ */
+static enum sci_status scic_sds_controller_ready_state_start_io_handler(
+ struct sci_base_controller *controller,
+ struct sci_base_remote_device *remote_device,
+ struct sci_base_request *io_request,
+ u16 io_tag)
+{
+ enum sci_status status;
+
+ struct scic_sds_controller *this_controller;
+ struct scic_sds_request *the_request;
+ struct scic_sds_remote_device *the_device;
+
+ this_controller = (struct scic_sds_controller *)controller;
+ the_request = (struct scic_sds_request *)io_request;
+ the_device = (struct scic_sds_remote_device *)remote_device;
+
+ status = scic_sds_remote_device_start_io(this_controller, the_device, the_request);
+
+ if (status == SCI_SUCCESS) {
+ this_controller->io_request_table[
+ scic_sds_io_tag_get_index(the_request->io_tag)] = the_request;
+
+ scic_sds_controller_post_request(
+ this_controller,
+ scic_sds_request_get_post_context(the_request)
+ );
+ }
+
+ return status;
+}
+
+/**
+ *
+ * @controller: This is struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @remote_device: This is struct sci_base_remote_device which is cast to a
+ * struct scic_sds_remote_device object.
+ * @io_request: This is the struct sci_base_request which is cast to a
+ * SCIC_SDS_IO_REQUEST object.
+ *
+ * This method is called when the struct scic_sds_controller is in the ready state and
+ * the complete io handler is called. - Complete the io request on the remote
+ * device - if successful - remove the io_request to the io_request_table
+ * enum sci_status SCI_SUCCESS if the start io operation succeeds
+ * SCI_FAILURE_INVALID_STATE if one or more objects are not in a valid state to
+ * accept io requests.
+ */
+static enum sci_status scic_sds_controller_ready_state_complete_io_handler(
+ struct sci_base_controller *controller,
+ struct sci_base_remote_device *remote_device,
+ struct sci_base_request *io_request)
+{
+ u16 index;
+ enum sci_status status;
+ struct scic_sds_controller *this_controller;
+ struct scic_sds_request *the_request;
+ struct scic_sds_remote_device *the_device;
+
+ this_controller = (struct scic_sds_controller *)controller;
+ the_request = (struct scic_sds_request *)io_request;
+ the_device = (struct scic_sds_remote_device *)remote_device;
+
+ status = scic_sds_remote_device_complete_io(
+ this_controller, the_device, the_request);
+
+ if (status == SCI_SUCCESS) {
+ index = scic_sds_io_tag_get_index(the_request->io_tag);
+ this_controller->io_request_table[index] = NULL;
+ }
+
+ return status;
+}
+
+/**
+ *
+ * @controller: This is struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @remote_device: This is struct sci_base_remote_device which is cast to a
+ * struct scic_sds_remote_device object.
+ * @io_request: This is the struct sci_base_request which is cast to a
+ * SCIC_SDS_IO_REQUEST object.
+ *
+ * This method is called when the struct scic_sds_controller is in the ready state and
+ * the continue io handler is called. enum sci_status
+ */
+static enum sci_status scic_sds_controller_ready_state_continue_io_handler(
+ struct sci_base_controller *controller,
+ struct sci_base_remote_device *remote_device,
+ struct sci_base_request *io_request)
+{
+ struct scic_sds_controller *this_controller;
+ struct scic_sds_request *the_request;
+
+ the_request = (struct scic_sds_request *)io_request;
+ this_controller = (struct scic_sds_controller *)controller;
+
+ this_controller->io_request_table[
+ scic_sds_io_tag_get_index(the_request->io_tag)] = the_request;
+
+ scic_sds_controller_post_request(
+ this_controller,
+ scic_sds_request_get_post_context(the_request)
+ );
+
+ return SCI_SUCCESS;
+}
+
+/**
+ *
+ * @controller: This is struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @remote_device: This is struct sci_base_remote_device which is cast to a
+ * struct scic_sds_remote_device object.
+ * @io_request: This is the struct sci_base_request which is cast to a
+ * SCIC_SDS_IO_REQUEST object.
+ * @task_tag: This is the task tag to be assigned to the task request or
+ * SCI_CONTROLLER_INVALID_IO_TAG.
+ *
+ * This method is called when the struct scic_sds_controller is in the ready state and
+ * the start task handler is called. - The remote device is requested to start
+ * the task request - if successful - assign the task to the io_request_table -
+ * post the request to the SCU hardware enum sci_status SCI_SUCCESS if the start io
+ * operation succeeds SCI_FAILURE_INSUFFICIENT_RESOURCES if the IO tag could
+ * not be allocated for the io request. SCI_FAILURE_INVALID_STATE if one or
+ * more objects are not in a valid state to accept io requests. How does the io
+ * tag get assigned in this code path?
+ */
+static enum sci_status scic_sds_controller_ready_state_start_task_handler(
+ struct sci_base_controller *controller,
+ struct sci_base_remote_device *remote_device,
+ struct sci_base_request *io_request,
+ u16 task_tag)
+{
+ struct scic_sds_controller *this_controller = (struct scic_sds_controller *)
+ controller;
+ struct scic_sds_request *the_request = (struct scic_sds_request *)
+ io_request;
+ struct scic_sds_remote_device *the_device = (struct scic_sds_remote_device *)
+ remote_device;
+ enum sci_status status;
+
+ status = scic_sds_remote_device_start_task(
+ this_controller, the_device, the_request
+ );
+
+ if (status == SCI_SUCCESS) {
+ this_controller->io_request_table[
+ scic_sds_io_tag_get_index(the_request->io_tag)] = the_request;
+
+ scic_sds_controller_post_request(
+ this_controller,
+ scic_sds_request_get_post_context(the_request)
+ );
+ } else if (status == SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS) {
+ this_controller->io_request_table[
+ scic_sds_io_tag_get_index(the_request->io_tag)] = the_request;
+
+ /*
+ * We will let framework know this task request started successfully,
+ * although core is still woring on starting the request (to post tc when
+ * RNC is resumed.) */
+ status = SCI_SUCCESS;
+ }
+ return status;
+}
+
+/**
+ *
+ * @controller: This is struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @remote_device: This is struct sci_base_remote_device which is cast to a
+ * struct scic_sds_remote_device object.
+ * @io_request: This is the struct sci_base_request which is cast to a
+ * SCIC_SDS_IO_REQUEST object.
+ *
+ * This method is called when the struct scic_sds_controller is in the ready state and
+ * the terminate request handler is called. - call the io request terminate
+ * function - if successful - post the terminate request to the SCU hardware
+ * enum sci_status SCI_SUCCESS if the start io operation succeeds
+ * SCI_FAILURE_INVALID_STATE if one or more objects are not in a valid state to
+ * accept io requests.
+ */
+static enum sci_status scic_sds_controller_ready_state_terminate_request_handler(
+ struct sci_base_controller *controller,
+ struct sci_base_remote_device *remote_device,
+ struct sci_base_request *io_request)
+{
+ struct scic_sds_controller *this_controller = (struct scic_sds_controller *)
+ controller;
+ struct scic_sds_request *the_request = (struct scic_sds_request *)
+ io_request;
+ enum sci_status status;
+
+ status = scic_sds_io_request_terminate(the_request);
+ if (status == SCI_SUCCESS) {
+ /*
+ * Utilize the original post context command and or in the POST_TC_ABORT
+ * request sub-type. */
+ scic_sds_controller_post_request(
+ this_controller,
+ scic_sds_request_get_post_context(the_request)
+ | SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT
+ );
+ }
+
+ return status;
+}
+
+/**
+ *
+ * @controller: This is struct scic_sds_controller which receives the link up
+ * notification.
+ * @port: This is struct scic_sds_port with which the phy is associated.
+ * @phy: This is the struct scic_sds_phy which has gone link up.
+ *
+ * This method is called when the struct scic_sds_controller is in the starting state
+ * link up handler is called. This method will perform the following: - Stop
+ * the phy timer - Start the next phy - Report the link up condition to the
+ * port object none
+ */
+static void scic_sds_controller_ready_state_link_up_handler(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ this_controller->port_agent.link_up_handler(
+ this_controller, &this_controller->port_agent, port, phy
+ );
+}
+
+/**
+ *
+ * @controller: This is struct scic_sds_controller which receives the link down
+ * notification.
+ * @port: This is struct scic_sds_port with which the phy is associated.
+ * @phy: This is the struct scic_sds_phy which has gone link down.
+ *
+ * This method is called when the struct scic_sds_controller is in the starting state
+ * link down handler is called. - Report the link down condition to the port
+ * object none
+ */
+static void scic_sds_controller_ready_state_link_down_handler(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_port *port,
+ struct scic_sds_phy *phy)
+{
+ this_controller->port_agent.link_down_handler(
+ this_controller, &this_controller->port_agent, port, phy
+ );
+}
+
+/*
+ * *****************************************************************************
+ * * STOPPING STATE HANDLERS
+ * ***************************************************************************** */
+
+/**
+ *
+ * @controller: This is struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @remote_device: This is struct sci_base_remote_device which is cast to a
+ * struct scic_sds_remote_device object.
+ * @io_request: This is the struct sci_base_request which is cast to a
+ * SCIC_SDS_IO_REQUEST object.
+ *
+ * This method is called when the struct scic_sds_controller is in a stopping state
+ * and the complete io handler is called. - This function is not yet
+ * implemented enum sci_status SCI_FAILURE
+ */
+static enum sci_status scic_sds_controller_stopping_state_complete_io_handler(
+ struct sci_base_controller *controller,
+ struct sci_base_remote_device *remote_device,
+ struct sci_base_request *io_request)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)controller;
+
+ /* / @todo Implement this function */
+ return SCI_FAILURE;
+}
+
+/**
+ *
+ * @controller: This is struct sci_base_controller object which is cast into a
+ * struct scic_sds_controller object.
+ * @remote_device: This is struct sci_base_remote_device which is cast to a
+ * struct scic_sds_remote_device object.
+ *
+ * This method is called when the struct scic_sds_controller is in a stopping state
+ * and the remote device has stopped.
+ **/
+void scic_sds_controller_stopping_state_device_stopped_handler(
+ struct scic_sds_controller *controller,
+ struct scic_sds_remote_device *remote_device
+)
+{
+ if (!scic_sds_controller_has_remote_devices_stopping(controller)) {
+ sci_base_state_machine_change_state(
+ &controller->parent.state_machine,
+ SCI_BASE_CONTROLLER_STATE_STOPPED
+ );
+ }
+}
+
+const struct scic_sds_controller_state_handler scic_sds_controller_state_handler_table[] = {
+ [SCI_BASE_CONTROLLER_STATE_INITIAL] = {
+ .base.start_io = scic_sds_controller_default_start_operation_handler,
+ .base.complete_io = scic_sds_controller_default_request_handler,
+ .base.continue_io = scic_sds_controller_default_request_handler,
+ .terminate_request = scic_sds_controller_default_request_handler,
+ },
+ [SCI_BASE_CONTROLLER_STATE_RESET] = {
+ .base.initialize = scic_sds_controller_reset_state_initialize_handler,
+ .base.start_io = scic_sds_controller_default_start_operation_handler,
+ .base.complete_io = scic_sds_controller_default_request_handler,
+ .base.continue_io = scic_sds_controller_default_request_handler,
+ .terminate_request = scic_sds_controller_default_request_handler,
+ },
+ [SCI_BASE_CONTROLLER_STATE_INITIALIZING] = {
+ .base.start_io = scic_sds_controller_default_start_operation_handler,
+ .base.complete_io = scic_sds_controller_default_request_handler,
+ .base.continue_io = scic_sds_controller_default_request_handler,
+ .terminate_request = scic_sds_controller_default_request_handler,
+ },
+ [SCI_BASE_CONTROLLER_STATE_INITIALIZED] = {
+ .base.start = scic_sds_controller_initialized_state_start_handler,
+ .base.start_io = scic_sds_controller_default_start_operation_handler,
+ .base.complete_io = scic_sds_controller_default_request_handler,
+ .base.continue_io = scic_sds_controller_default_request_handler,
+ .terminate_request = scic_sds_controller_default_request_handler,
+ },
+ [SCI_BASE_CONTROLLER_STATE_STARTING] = {
+ .base.start_io = scic_sds_controller_default_start_operation_handler,
+ .base.complete_io = scic_sds_controller_default_request_handler,
+ .base.continue_io = scic_sds_controller_default_request_handler,
+ .terminate_request = scic_sds_controller_default_request_handler,
+ .link_up = scic_sds_controller_starting_state_link_up_handler,
+ .link_down = scic_sds_controller_starting_state_link_down_handler
+ },
+ [SCI_BASE_CONTROLLER_STATE_READY] = {
+ .base.stop = scic_sds_controller_ready_state_stop_handler,
+ .base.reset = scic_sds_controller_general_reset_handler,
+ .base.start_io = scic_sds_controller_ready_state_start_io_handler,
+ .base.complete_io = scic_sds_controller_ready_state_complete_io_handler,
+ .base.continue_io = scic_sds_controller_ready_state_continue_io_handler,
+ .base.start_task = scic_sds_controller_ready_state_start_task_handler,
+ .base.complete_task = scic_sds_controller_ready_state_complete_io_handler,
+ .terminate_request = scic_sds_controller_ready_state_terminate_request_handler,
+ .link_up = scic_sds_controller_ready_state_link_up_handler,
+ .link_down = scic_sds_controller_ready_state_link_down_handler
+ },
+ [SCI_BASE_CONTROLLER_STATE_RESETTING] = {
+ .base.start_io = scic_sds_controller_default_start_operation_handler,
+ .base.complete_io = scic_sds_controller_default_request_handler,
+ .base.continue_io = scic_sds_controller_default_request_handler,
+ .terminate_request = scic_sds_controller_default_request_handler,
+ },
+ [SCI_BASE_CONTROLLER_STATE_STOPPING] = {
+ .base.start_io = scic_sds_controller_default_start_operation_handler,
+ .base.complete_io = scic_sds_controller_stopping_state_complete_io_handler,
+ .base.continue_io = scic_sds_controller_default_request_handler,
+ .terminate_request = scic_sds_controller_default_request_handler,
+ .remote_device_stopped_handler = scic_sds_controller_stopping_state_device_stopped_handler,
+ },
+ [SCI_BASE_CONTROLLER_STATE_STOPPED] = {
+ .base.reset = scic_sds_controller_general_reset_handler,
+ .base.start_io = scic_sds_controller_default_start_operation_handler,
+ .base.complete_io = scic_sds_controller_default_request_handler,
+ .base.continue_io = scic_sds_controller_default_request_handler,
+ .terminate_request = scic_sds_controller_default_request_handler,
+ },
+ [SCI_BASE_CONTROLLER_STATE_FAILED] = {
+ .base.reset = scic_sds_controller_general_reset_handler,
+ .base.start_io = scic_sds_controller_default_start_operation_handler,
+ .base.complete_io = scic_sds_controller_default_request_handler,
+ .base.continue_io = scic_sds_controller_default_request_handler,
+ .terminate_request = scic_sds_controller_default_request_handler,
+ },
+};
+
+/**
+ *
+ * @object: This is the struct sci_base_object which is cast to a struct scic_sds_controller
+ * object.
+ *
+ * This method implements the actions taken by the struct scic_sds_controller on entry
+ * to the SCI_BASE_CONTROLLER_STATE_INITIAL. - Set the state handlers to the
+ * controllers initial state. none This function should initialze the
+ * controller object.
+ */
+static void scic_sds_controller_initial_state_enter(
+ struct sci_base_object *object)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)object;
+
+ sci_base_state_machine_change_state(
+ &this_controller->parent.state_machine, SCI_BASE_CONTROLLER_STATE_RESET);
+}
+
+/**
+ *
+ * @object: This is the struct sci_base_object which is cast to a struct scic_sds_controller
+ * object.
+ *
+ * This method implements the actions taken by the struct scic_sds_controller on exit
+ * from the SCI_BASE_CONTROLLER_STATE_STARTING. - This function stops the
+ * controller starting timeout timer. none
+ */
+static void scic_sds_controller_starting_state_exit(
+ struct sci_base_object *object)
+{
+ struct scic_sds_controller *scic = (struct scic_sds_controller *)object;
+
+ isci_event_timer_stop(scic, scic->timeout_timer);
+}
+
+/**
+ *
+ * @object: This is the struct sci_base_object which is cast to a struct scic_sds_controller
+ * object.
+ *
+ * This method implements the actions taken by the struct scic_sds_controller on entry
+ * to the SCI_BASE_CONTROLLER_STATE_READY. - Set the state handlers to the
+ * controllers ready state. none
+ */
+static void scic_sds_controller_ready_state_enter(
+ struct sci_base_object *object)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)object;
+
+ /* set the default interrupt coalescence number and timeout value. */
+ scic_controller_set_interrupt_coalescence(
+ this_controller, 0x10, 250);
+}
+
+/**
+ *
+ * @object: This is the struct sci_base_object which is cast to a struct scic_sds_controller
+ * object.
+ *
+ * This method implements the actions taken by the struct scic_sds_controller on exit
+ * from the SCI_BASE_CONTROLLER_STATE_READY. - This function does nothing. none
+ */
+static void scic_sds_controller_ready_state_exit(
+ struct sci_base_object *object)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)object;
+
+ /* disable interrupt coalescence. */
+ scic_controller_set_interrupt_coalescence(this_controller, 0, 0);
+}
+
+/**
+ *
+ * @object: This is the struct sci_base_object which is cast to a struct scic_sds_controller
+ * object.
+ *
+ * This method implements the actions taken by the struct scic_sds_controller on entry
+ * to the SCI_BASE_CONTROLLER_STATE_READY. - Set the state handlers to the
+ * controllers ready state. - Stop the phys on this controller - Stop the ports
+ * on this controller - Stop all of the remote devices on this controller none
+ */
+static void scic_sds_controller_stopping_state_enter(
+ struct sci_base_object *object)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)object;
+
+ /* Stop all of the components for this controller */
+ scic_sds_controller_stop_phys(this_controller);
+ scic_sds_controller_stop_ports(this_controller);
+ scic_sds_controller_stop_devices(this_controller);
+}
+
+/**
+ *
+ * @object: This is the struct sci_base_object which is cast to a struct scic_sds_controller
+ * object.
+ *
+ * This method implements the actions taken by the struct scic_sds_controller on exit
+ * from the SCI_BASE_CONTROLLER_STATE_STOPPING. - This function stops the
+ * controller stopping timeout timer. none
+ */
+static void scic_sds_controller_stopping_state_exit(
+ struct sci_base_object *object)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)object;
+
+ isci_event_timer_stop(this_controller, this_controller->timeout_timer);
+}
+
+/**
+ *
+ * @object: This is the struct sci_base_object which is cast to a struct scic_sds_controller
+ * object.
+ *
+ * This method implements the actions taken by the struct scic_sds_controller on entry
+ * to the SCI_BASE_CONTROLLER_STATE_RESETTING. - Set the state handlers to the
+ * controllers resetting state. - Write to the SCU hardware reset register to
+ * force a reset - Transition to the SCI_BASE_CONTROLLER_STATE_RESET none
+ */
+static void scic_sds_controller_resetting_state_enter(
+ struct sci_base_object *object)
+{
+ struct scic_sds_controller *this_controller;
+
+ this_controller = (struct scic_sds_controller *)object;
+
+ scic_sds_controller_reset_hardware(this_controller);
+
+ sci_base_state_machine_change_state(
+ scic_sds_controller_get_base_state_machine(this_controller),
+ SCI_BASE_CONTROLLER_STATE_RESET
+ );
+}
+
+/* --------------------------------------------------------------------------- */
+
+const struct sci_base_state scic_sds_controller_state_table[] = {
+ [SCI_BASE_CONTROLLER_STATE_INITIAL] = {
+ .enter_state = scic_sds_controller_initial_state_enter,
+ },
+ [SCI_BASE_CONTROLLER_STATE_RESET] = {},
+ [SCI_BASE_CONTROLLER_STATE_INITIALIZING] = {},
+ [SCI_BASE_CONTROLLER_STATE_INITIALIZED] = {},
+ [SCI_BASE_CONTROLLER_STATE_STARTING] = {
+ .exit_state = scic_sds_controller_starting_state_exit,
+ },
+ [SCI_BASE_CONTROLLER_STATE_READY] = {
+ .enter_state = scic_sds_controller_ready_state_enter,
+ .exit_state = scic_sds_controller_ready_state_exit,
+ },
+ [SCI_BASE_CONTROLLER_STATE_RESETTING] = {
+ .enter_state = scic_sds_controller_resetting_state_enter,
+ },
+ [SCI_BASE_CONTROLLER_STATE_STOPPING] = {
+ .enter_state = scic_sds_controller_stopping_state_enter,
+ .exit_state = scic_sds_controller_stopping_state_exit,
+ },
+ [SCI_BASE_CONTROLLER_STATE_STOPPED] = {},
+ [SCI_BASE_CONTROLLER_STATE_FAILED] = {}
+};
+
diff --git a/drivers/scsi/isci/core/scic_sds_controller.h b/drivers/scsi/isci/core/scic_sds_controller.h
new file mode 100644
index 0000000..9b8e55d
--- /dev/null
+++ b/drivers/scsi/isci/core/scic_sds_controller.h
@@ -0,0 +1,722 @@
+/*
+ * 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.
+ */
+
+#ifndef _SCIC_SDS_CONTROLLER_H_
+#define _SCIC_SDS_CONTROLLER_H_
+
+#include <linux/string.h>
+
+/**
+ * This file contains the structures, constants and prototypes used for the
+ * core controller object.
+ *
+ *
+ */
+
+#include "sci_pool.h"
+#include "sci_controller_constants.h"
+#include "sci_memory_descriptor_list.h"
+#include "sci_base_controller.h"
+#include "scic_config_parameters.h"
+#include "scic_sds_port.h"
+#include "scic_sds_phy.h"
+#include "scic_sds_remote_node_table.h"
+#include "scu_registers.h"
+#include "scu_constants.h"
+#include "scu_remote_node_context.h"
+#include "scu_task_context.h"
+#include "scu_unsolicited_frame.h"
+#include "scic_sds_unsolicited_frame_control.h"
+#include "scic_sds_port_configuration_agent.h"
+#include "scic_sds_pci.h"
+
+struct scic_sds_remote_device;
+struct scic_sds_request;
+struct scic_sds_controller;
+
+
+#define SCU_COMPLETION_RAM_ALIGNMENT (64)
+
+/**
+ * enum SCIC_SDS_CONTROLLER_MEMORY_DESCRIPTORS -
+ *
+ * This enumeration depects the types of MDEs that are going to be created for
+ * the controller object.
+ */
+enum SCIC_SDS_CONTROLLER_MEMORY_DESCRIPTORS {
+ /**
+ * Completion queue MDE entry
+ */
+ SCU_MDE_COMPLETION_QUEUE,
+
+ /**
+ * Remote node context MDE entry
+ */
+ SCU_MDE_REMOTE_NODE_CONTEXT,
+
+ /**
+ * Task context MDE entry
+ */
+ SCU_MDE_TASK_CONTEXT,
+
+ /**
+ * Unsolicited frame buffer MDE entrys this is the start of the unsolicited
+ * frame buffer entries.
+ */
+ SCU_MDE_UF_BUFFER,
+
+ SCU_MAX_MDES
+};
+
+
+/**
+ *
+ *
+ * Allowed PORT configuration modes APC Automatic PORT configuration mode is
+ * defined by the OEM configuration parameters providing no PHY_MASK parameters
+ * for any PORT. i.e. There are no phys assigned to any of the ports at start.
+ * MPC Manual PORT configuration mode is defined by the OEM configuration
+ * parameters providing a PHY_MASK value for any PORT. It is assumed that any
+ * PORT with no PHY_MASK is an invalid port and not all PHYs must be assigned.
+ * A PORT_PHY mask that assigns just a single PHY to a port and no other PHYs
+ * being assigned is sufficient to declare manual PORT configuration.
+ */
+enum SCIC_PORT_CONFIGURATION_MODE {
+ SCIC_PORT_MANUAL_CONFIGURATION_MODE,
+ SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE
+};
+
+/**
+ * struct scic_power_control -
+ *
+ * This structure defines the fields for managing power control for direct
+ * attached disk devices.
+ */
+struct scic_power_control {
+ /**
+ * This field is set when the power control timer is running and cleared when
+ * it is not.
+ */
+ bool timer_started;
+
+ /**
+ * This field is the handle to the driver timer object. This timer is used to
+ * control when the directed attached disks can consume power.
+ */
+ void *timer;
+
+ /**
+ * This field is used to keep track of how many phys are put into the
+ * requesters field.
+ */
+ u8 phys_waiting;
+
+ /**
+ * This field is an array of phys that we are waiting on. The phys are direct
+ * mapped into requesters via struct scic_sds_phy.phy_index
+ */
+ struct scic_sds_phy *requesters[SCI_MAX_PHYS];
+
+};
+
+/**
+ * struct scic_sds_controller -
+ *
+ * This structure represents the SCU contoller object.
+ */
+struct scic_sds_controller {
+ /**
+ * The struct sci_base_controller is the parent object for the struct scic_sds_controller
+ * object.
+ */
+ struct sci_base_controller parent;
+
+ /**
+ * This field is the driver timer object handler used to time the controller
+ * object start and stop requests.
+ */
+ void *timeout_timer;
+
+ /**
+ * This field contains the user parameters to be utilized for this
+ * core controller object.
+ */
+ union scic_user_parameters user_parameters;
+
+ /**
+ * This field contains the OEM parameters to be utilized for this
+ * core controller object.
+ */
+ union scic_oem_parameters oem_parameters;
+
+ /**
+ * This field contains the port configuration agent for this controller.
+ */
+ struct scic_sds_port_configuration_agent port_agent;
+
+ /**
+ * This field is the array of port objects that are controlled by this
+ * controller object. There is one dummy port object also contained within
+ * this controller object.
+ */
+ struct scic_sds_port port_table[SCI_MAX_PORTS + 1];
+
+ /**
+ * This field is the array of phy objects that are controlled by this
+ * controller object.
+ */
+ struct scic_sds_phy phy_table[SCI_MAX_PHYS];
+
+ /**
+ * This field is the array of device objects that are currently constructed
+ * for this controller object. This table is used as a fast lookup of device
+ * objects that need to handle device completion notifications from the
+ * hardware. The table is RNi based.
+ */
+ struct scic_sds_remote_device *device_table[SCI_MAX_REMOTE_DEVICES];
+
+ /**
+ * This field is the array of IO request objects that are currently active for
+ * this controller object. This table is used as a fast lookup of the io
+ * request object that need to handle completion queue notifications. The
+ * table is TCi based.
+ */
+ struct scic_sds_request *io_request_table[SCI_MAX_IO_REQUESTS];
+
+ /**
+ * This field is the free RNi data structure
+ */
+ struct scic_remote_node_table available_remote_nodes;
+
+ /**
+ * This field is the TCi pool used to manage the task context index.
+ */
+ SCI_POOL_CREATE(tci_pool, u16, SCI_MAX_IO_REQUESTS);
+
+ /**
+ * This filed is the struct scic_power_control data used to controll when direct
+ * attached devices can consume power.
+ */
+ struct scic_power_control power_control;
+
+ /**
+ * This field is the array of sequence values for the IO Tag fields. Even
+ * though only 4 bits of the field is used for the sequence the sequence is 16
+ * bits in size so the sequence can be bitwise or'd with the TCi to build the
+ * IO Tag value.
+ */
+ u16 io_request_sequence[SCI_MAX_IO_REQUESTS];
+
+ /**
+ * This field in the array of sequence values for the RNi. These are used
+ * to control io request build to io request start operations. The sequence
+ * value is recorded into an io request when it is built and is checked on
+ * the io request start operation to make sure that there was not a device
+ * hot plug between the build and start operation.
+ */
+ u8 remote_device_sequence[SCI_MAX_REMOTE_DEVICES];
+
+ /**
+ * This field is a pointer to the memory allocated by the driver for the task
+ * context table. This data is shared between the hardware and software.
+ */
+ struct scu_task_context *task_context_table;
+
+ /**
+ * This field is a pointer to the memory allocated by the driver for the
+ * remote node context table. This table is shared between the hardware and
+ * software.
+ */
+ union scu_remote_node_context *remote_node_context_table;
+
+ /**
+ * This field is the array of physical memory requiremets for this controller
+ * object.
+ */
+ struct sci_physical_memory_descriptor memory_descriptors[SCU_MAX_MDES];
+
+ /**
+ * This field is a pointer to the completion queue. This memory is
+ * written to by the hardware and read by the software.
+ */
+ u32 *completion_queue;
+
+ /**
+ * This field is the software copy of the completion queue get pointer. The
+ * controller object writes this value to the hardware after processing the
+ * completion entries.
+ */
+ u32 completion_queue_get;
+
+ /**
+ * This field is the minimum of the number of hardware supported port entries
+ * and the software requested port entries.
+ */
+ u32 logical_port_entries;
+
+ /**
+ * This field is the minimum number of hardware supported completion queue
+ * entries and the software requested completion queue entries.
+ */
+ u32 completion_queue_entries;
+
+ /**
+ * This field is the minimum number of hardware supported event entries and
+ * the software requested event entries.
+ */
+ u32 completion_event_entries;
+
+ /**
+ * This field is the minimum number of devices supported by the hardware and
+ * the number of devices requested by the software.
+ */
+ u32 remote_node_entries;
+
+ /**
+ * This field is the minimum number of IO requests supported by the hardware
+ * and the number of IO requests requested by the software.
+ */
+ u32 task_context_entries;
+
+ /**
+ * This object contains all of the unsolicited frame specific
+ * data utilized by the core controller.
+ */
+ struct scic_sds_unsolicited_frame_control uf_control;
+
+ /* Phy Startup Data */
+ /**
+ * This field is the driver timer handle for controller phy request startup.
+ * On controller start the controller will start each PHY individually in
+ * order of phy index.
+ */
+ void *phy_startup_timer;
+
+ /**
+ * This field is set when the phy_startup_timer is running and is cleared when
+ * the phy_startup_timer is stopped.
+ */
+ bool phy_startup_timer_pending;
+
+ /**
+ * This field is the index of the next phy start. It is initialized to 0 and
+ * increments for each phy index that is started.
+ */
+ u32 next_phy_to_start;
+
+ /**
+ * This field controlls the invalid link up notifications to the SCI_USER. If
+ * an invalid_link_up notification is reported a bit for the PHY index is set
+ * so further notifications are not made. Once the PHY object reports link up
+ * and is made part of a port then this bit for the PHY index is cleared.
+ */
+ u8 invalid_phy_mask;
+
+ /*
+ * This field saves the current interrupt coalescing number of the controller.
+ */
+ u16 interrupt_coalesce_number;
+
+ /*
+ * This field saves the current interrupt coalescing timeout value in microseconds.
+ */
+ u32 interrupt_coalesce_timeout;
+
+ /**
+ * This field is a pointer to the memory mapped register space for the
+ * struct smu_registers.
+ */
+ struct smu_registers __iomem *smu_registers;
+
+ /**
+ * This field is a pointer to the memory mapped register space for the
+ * struct scu_registers.
+ */
+ struct scu_registers __iomem *scu_registers;
+
+};
+
+typedef void (*scic_sds_controller_phy_handler_t)(struct scic_sds_controller *,
+ struct scic_sds_port *,
+ struct scic_sds_phy *);
+
+typedef void (*scic_sds_controller_device_handler_t)(struct scic_sds_controller *,
+ struct scic_sds_remote_device *);
+
+
+/**
+ * struct scic_sds_controller_state_handler -
+ *
+ * This structure contains the SDS core specific definition for the state
+ * handlers.
+ */
+struct scic_sds_controller_state_handler {
+ struct sci_base_controller_state_handler base;
+
+ sci_base_controller_request_handler_t terminate_request;
+ scic_sds_controller_phy_handler_t link_up;
+ scic_sds_controller_phy_handler_t link_down;
+ scic_sds_controller_device_handler_t remote_device_started_handler;
+ scic_sds_controller_device_handler_t remote_device_stopped_handler;
+};
+
+extern const struct scic_sds_controller_state_handler
+ scic_sds_controller_state_handler_table[];
+extern const struct sci_base_state scic_sds_controller_state_table[];
+
+/**
+ * INCREMENT_QUEUE_GET() -
+ *
+ * This macro will increment the specified index to and if the index wraps to 0
+ * it will toggel the cycle bit.
+ */
+#define INCREMENT_QUEUE_GET(index, cycle, entry_count, bit_toggle) \
+ { \
+ if ((index) + 1 == entry_count) { \
+ (index) = 0; \
+ (cycle) = (cycle) ^ (bit_toggle); \
+ } else { \
+ index = index + 1; \
+ } \
+ }
+
+/**
+ * scic_sds_controller_get_base_state_machine() -
+ *
+ * This is a helper macro that gets the base state machine for the controller
+ * object
+ */
+#define scic_sds_controller_get_base_state_machine(this_controller) \
+ (&(this_controller)->parent.state_machine)
+
+/**
+ * scic_sds_controller_get_port_configuration_agent() -
+ *
+ * This is a helper macro to get the port configuration agent from the
+ * controller object.
+ */
+#define scic_sds_controller_get_port_configuration_agent(controller) \
+ (&(controller)->port_agent)
+
+/**
+ * smu_register_write() -
+ *
+ * This macro writes to the smu_register for this controller
+ */
+#define smu_register_write(controller, reg, value) \
+ scic_sds_pci_write_smu_dword((controller), &(reg), (value))
+
+/**
+ * smu_register_read() -
+ *
+ * This macro reads the smu_register for this controller
+ */
+#define smu_register_read(controller, reg) \
+ scic_sds_pci_read_smu_dword((controller), &(reg))
+
+/**
+ * scu_register_write() -
+ *
+ * This mcaro writes the scu_register for this controller
+ */
+#define scu_register_write(controller, reg, value) \
+ scic_sds_pci_write_scu_dword((controller), &(reg), (value))
+
+/**
+ * scu_register_read() -
+ *
+ * This macro reads the scu_register for this controller
+ */
+#define scu_register_read(controller, reg) \
+ scic_sds_pci_read_scu_dword((controller), &(reg))
+
+/**
+ * scic_sds_controller_get_protocol_engine_group() -
+ *
+ * This macro returns the protocol engine group for this controller object.
+ * Presently we only support protocol engine group 0 so just return that
+ */
+#define scic_sds_controller_get_protocol_engine_group(controller) 0
+
+/**
+ * scic_sds_io_tag_construct() -
+ *
+ * This macro constructs an IO tag from the sequence and index values.
+ */
+#define scic_sds_io_tag_construct(sequence, task_index) \
+ ((sequence) << 12 | (task_index))
+
+/**
+ * scic_sds_io_tag_get_sequence() -
+ *
+ * This macro returns the IO sequence from the IO tag value.
+ */
+#define scic_sds_io_tag_get_sequence(io_tag) \
+ (((io_tag) & 0xF000) >> 12)
+
+/**
+ * scic_sds_io_tag_get_index() -
+ *
+ * This macro returns the TCi from the io tag value
+ */
+#define scic_sds_io_tag_get_index(io_tag) \
+ ((io_tag) & 0x0FFF)
+
+/**
+ * scic_sds_io_sequence_increment() -
+ *
+ * This is a helper macro to increment the io sequence count. We may find in
+ * the future that it will be faster to store the sequence count in such a way
+ * as we dont perform the shift operation to build io tag values so therefore
+ * need a way to incrment them correctly
+ */
+#define scic_sds_io_sequence_increment(value) \
+ ((value) = (((value) + 1) & 0x000F))
+
+#define scic_sds_remote_device_node_count(device) \
+ (\
+ (\
+ (device)->target_protocols.u.bits.attached_stp_target \
+ && ((device)->is_direct_attached != true) \
+ ) \
+ ? SCU_STP_REMOTE_NODE_COUNT : SCU_SSP_REMOTE_NODE_COUNT \
+ )
+
+/**
+ * scic_sds_controller_set_invalid_phy() -
+ *
+ * This macro will set the bit in the invalid phy mask for this controller
+ * object. This is used to control messages reported for invalid link up
+ * notifications.
+ */
+#define scic_sds_controller_set_invalid_phy(controller, phy) \
+ ((controller)->invalid_phy_mask |= (1 << (phy)->phy_index))
+
+/**
+ * scic_sds_controller_clear_invalid_phy() -
+ *
+ * This macro will clear the bit in the invalid phy mask for this controller
+ * object. This is used to control messages reported for invalid link up
+ * notifications.
+ */
+#define scic_sds_controller_clear_invalid_phy(controller, phy) \
+ ((controller)->invalid_phy_mask &= ~(1 << (phy)->phy_index))
+
+/* --------------------------------------------------------------------------- */
+
+u32 scic_sds_controller_get_object_size(void);
+
+/* --------------------------------------------------------------------------- */
+
+
+/* --------------------------------------------------------------------------- */
+
+enum SCIC_PORT_CONFIGURATION_MODE scic_sds_controller_get_port_configuration_mode(
+ struct scic_sds_controller *this_controller);
+
+/* --------------------------------------------------------------------------- */
+
+void scic_sds_controller_post_request(
+ struct scic_sds_controller *this_controller,
+ u32 request);
+
+/* --------------------------------------------------------------------------- */
+
+void scic_sds_controller_release_frame(
+ struct scic_sds_controller *this_controller,
+ u32 frame_index);
+
+void scic_sds_controller_copy_sata_response(
+ void *response_buffer,
+ void *frame_header,
+ void *frame_buffer);
+
+/* --------------------------------------------------------------------------- */
+
+enum sci_status scic_sds_controller_allocate_remote_node_context(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_remote_device *the_device,
+ u16 *node_id);
+
+void scic_sds_controller_free_remote_node_context(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_remote_device *the_device,
+ u16 node_id);
+
+union scu_remote_node_context *scic_sds_controller_get_remote_node_context_buffer(
+ struct scic_sds_controller *this_controller,
+ u16 node_id);
+
+/* --------------------------------------------------------------------------- */
+
+struct scic_sds_request *scic_sds_controller_get_io_request_from_tag(
+ struct scic_sds_controller *this_controller,
+ u16 io_tag);
+
+
+struct scu_task_context *scic_sds_controller_get_task_context_buffer(
+ struct scic_sds_controller *this_controller,
+ u16 io_tag);
+
+/*
+ * *****************************************************************************
+ * * CORE CONTROLLER POWER CONTROL METHODS
+ * ***************************************************************************** */
+
+
+void scic_sds_controller_power_control_queue_insert(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_phy *the_phy);
+
+void scic_sds_controller_power_control_queue_remove(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_phy *the_phy);
+
+/*
+ * *****************************************************************************
+ * * CORE CONTROLLER PHY MESSAGE PROCESSING
+ * ***************************************************************************** */
+
+void scic_sds_controller_link_up(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_port *the_port,
+ struct scic_sds_phy *the_phy);
+
+void scic_sds_controller_link_down(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_port *the_port,
+ struct scic_sds_phy *the_phy);
+
+/*
+ * *****************************************************************************
+ * * CORE CONTROLLER REMOTE DEVICE MESSAGE PROCESSING
+ * ***************************************************************************** */
+
+bool scic_sds_controller_has_remote_devices_stopping(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_remote_device_started(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_remote_device *the_device);
+
+void scic_sds_controller_remote_device_stopped(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_remote_device *the_device);
+
+
+/*
+ * *****************************************************************************
+ * * CORE CONTROLLER PRIVATE METHODS
+ * ***************************************************************************** */
+
+enum sci_status scic_sds_controller_validate_memory_descriptor_table(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_ram_initialization(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_assign_task_entries(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_afe_initialization(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_enable_port_task_scheduler(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_initialize_completion_queue(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_initialize_unsolicited_frame_queue(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_phy_timer_stop(
+ struct scic_sds_controller *this_controller);
+
+enum sci_status scic_sds_controller_start_next_phy(
+ struct scic_sds_controller *this_controller);
+
+enum sci_status scic_sds_controller_stop_phys(
+ struct scic_sds_controller *this_controller);
+
+enum sci_status scic_sds_controller_stop_ports(
+ struct scic_sds_controller *this_controller);
+
+enum sci_status scic_sds_controller_stop_devices(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_copy_task_context(
+ struct scic_sds_controller *this_controller,
+ struct scic_sds_request *this_request);
+
+void scic_sds_controller_timeout_handler(
+ struct scic_sds_controller *controller);
+
+void scic_sds_controller_initialize_power_control(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_register_setup(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_reset_hardware(
+ struct scic_sds_controller *this_controller);
+
+enum sci_status scic_sds_controller_initialize_phy_startup(
+ struct scic_sds_controller *this_controller);
+
+void scic_sds_controller_build_memory_descriptor_table(
+ struct scic_sds_controller *this_controller);
+
+#endif /* _SCIC_SDS_CONTROLLER_H_ */
diff --git a/drivers/scsi/isci/core/scic_sds_controller_registers.h b/drivers/scsi/isci/core/scic_sds_controller_registers.h
new file mode 100644
index 0000000..b7bec92
--- /dev/null
+++ b/drivers/scsi/isci/core/scic_sds_controller_registers.h
@@ -0,0 +1,463 @@
+/*
+ * 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.
+ */
+
+#ifndef _SCIC_SDS_CONTROLLER_REGISTERS_H_
+#define _SCIC_SDS_CONTROLLER_REGISTERS_H_
+
+/**
+ * This file contains macros used to perform the register reads/writes to the
+ * SCU hardware.
+ *
+ *
+ */
+
+#include "scu_registers.h"
+#include "scic_sds_controller.h"
+
+/**
+ * scic_sds_controller_smu_register_read() -
+ *
+ * SMU_REGISTER_ACCESS_MACROS
+ */
+#define scic_sds_controller_smu_register_read(controller, reg) \
+ smu_register_read(\
+ (controller), \
+ (controller)->smu_registers->reg \
+ )
+
+#define scic_sds_controller_smu_register_write(controller, reg, value) \
+ smu_register_write(\
+ (controller), \
+ (controller)->smu_registers->reg, \
+ (value) \
+ )
+
+/**
+ * scu_afe_register_write() -
+ *
+ * AFE_REGISTER_ACCESS_MACROS
+ */
+#define scu_afe_register_write(controller, reg, value) \
+ scu_register_write(\
+ (controller), \
+ (controller)->scu_registers->afe.reg, \
+ (value) \
+ )
+
+#define scu_afe_txreg_write(controller, phy, reg, value) \
+ scu_register_write(\
+ (controller), \
+ (controller)->scu_registers->afe.scu_afe_xcvr[phy].reg,\
+ (value) \
+ )
+
+#define scu_afe_register_read(controller, reg) \
+ scu_register_read(\
+ (controller), \
+ (controller)->scu_registers->afe.reg \
+ )
+
+/**
+ * scu_controller_viit_register_write() -
+ *
+ * VIIT_REGISTER_ACCESS_MACROS
+ */
+#define scu_controller_viit_register_write(controller, index, reg, value) \
+ scu_register_write(\
+ (controller), \
+ (controller)->scu_registers->peg0.viit[index].reg, \
+ value \
+ )
+
+/*
+ * *****************************************************************************
+ * * SMU REGISTERS
+ * ***************************************************************************** */
+
+/**
+ * SMU_PCP_WRITE() -
+ *
+ * struct smu_registers
+ */
+#define SMU_PCP_WRITE(controller, value) \
+ scic_sds_controller_smu_register_write(\
+ controller, post_context_port, value \
+ )
+
+#define SMU_TCR_READ(controller, value) \
+ scic_sds_controller_smu_register_read(\
+ controller, task_context_range \
+ )
+
+#define SMU_TCR_WRITE(controller, value) \
+ scic_sds_controller_smu_register_write(\
+ controller, task_context_range, value \
+ )
+
+#define SMU_HTTBAR_WRITE(controller, address) \
+ { \
+ scic_sds_controller_smu_register_write(\
+ controller, \
+ host_task_table_lower, \
+ lower_32_bits(address) \
+ ); \
+ scic_sds_controller_smu_register_write(\
+ controller, \
+ host_task_table_upper, \
+ upper_32_bits(address) \
+ ); \
+ }
+
+#define SMU_CQBAR_WRITE(controller, address) \
+ { \
+ scic_sds_controller_smu_register_write(\
+ controller, \
+ completion_queue_lower, \
+ lower_32_bits(address) \
+ ); \
+ scic_sds_controller_smu_register_write(\
+ controller, \
+ completion_queue_upper, \
+ upper_32_bits(address) \
+ ); \
+ }
+
+#define SMU_CQGR_WRITE(controller, value) \
+ scic_sds_controller_smu_register_write(\
+ controller, completion_queue_get, value \
+ )
+
+#define SMU_CQGR_READ(controller, value) \
+ scic_sds_controller_smu_register_read(\
+ controller, completion_queue_get \
+ )
+
+#define SMU_CQPR_WRITE(controller, value) \
+ scic_sds_controller_smu_register_write(\
+ controller, completion_queue_put, value \
+ )
+
+#define SMU_RNCBAR_WRITE(controller, address) \
+ { \
+ scic_sds_controller_smu_register_write(\
+ controller, \
+ remote_node_context_lower, \
+ lower_32_bits(address) \
+ ); \
+ scic_sds_controller_smu_register_write(\
+ controller, \
+ remote_node_context_upper, \
+ upper_32_bits(address) \
+ ); \
+ }
+
+#define SMU_AMR_READ(controller) \
+ scic_sds_controller_smu_register_read(\
+ controller, address_modifier \
+ )
+
+#define SMU_IMR_READ(controller) \
+ scic_sds_controller_smu_register_read(\
+ controller, interrupt_mask \
+ )
+
+#define SMU_IMR_WRITE(controller, mask) \
+ scic_sds_controller_smu_register_write(\
+ controller, interrupt_mask, mask \
+ )
+
+#define SMU_ISR_READ(controller) \
+ scic_sds_controller_smu_register_read(\
+ controller, interrupt_status \
+ )
+
+#define SMU_ISR_WRITE(controller, status) \
+ scic_sds_controller_smu_register_write(\
+ controller, interrupt_status, status \
+ )
+
+#define SMU_ICC_READ(controller) \
+ scic_sds_controller_smu_register_read(\
+ controller, interrupt_coalesce_control \
+ )
+
+#define SMU_ICC_WRITE(controller, value) \
+ scic_sds_controller_smu_register_write(\
+ controller, interrupt_coalesce_control, value \
+ )
+
+#define SMU_CQC_WRITE(controller, value) \
+ scic_sds_controller_smu_register_write(\
+ controller, completion_queue_control, value \
+ )
+
+#define SMU_SMUSRCR_WRITE(controller, value) \
+ scic_sds_controller_smu_register_write(\
+ controller, soft_reset_control, value \
+ )
+
+#define SMU_TCA_WRITE(controller, index, value) \
+ scic_sds_controller_smu_register_write(\
+ controller, task_context_assignment[index], value \
+ )
+
+#define SMU_TCA_READ(controller, index) \
+ scic_sds_controller_smu_register_read(\
+ controller, task_context_assignment[index] \
+ )
+
+#define SMU_DCC_READ(controller) \
+ scic_sds_controller_smu_register_read(\
+ controller, device_context_capacity \
+ )
+
+#define SMU_DFC_READ(controller) \
+ scic_sds_controller_smu_register_read(\
+ controller, device_function_capacity \
+ )
+
+#define SMU_SMUCSR_READ(controller) \
+ scic_sds_controller_smu_register_read(\
+ controller, control_status \
+ )
+
+#define SMU_CQPR_READ(controller) \
+ scic_sds_controller_smu_register_read(\
+ controller, completion_queue_put \
+ )
+
+
+/**
+ * scic_sds_controller_scu_register_read() -
+ *
+ * SCU_REGISTER_ACCESS_MACROS
+ */
+#define scic_sds_controller_scu_register_read(controller, reg) \
+ scu_register_read(\
+ (controller), \
+ (controller)->scu_registers->reg \
+ )
+
+#define scic_sds_controller_scu_register_write(controller, reg, value) \
+ scu_register_write(\
+ (controller), \
+ (controller)->scu_registers->reg, \
+ (value) \
+ )
+
+
+/*
+ * ****************************************************************************
+ * * SCU SDMA REGISTERS
+ * **************************************************************************** */
+
+/**
+ * scu_sdma_register_read() -
+ *
+ * SCU_SDMA_REGISTER_ACCESS_MACROS
+ */
+#define scu_sdma_register_read(controller, reg) \
+ scu_register_read(\
+ (controller), \
+ (controller)->scu_registers->sdma.reg \
+ )
+
+#define scu_sdma_register_write(controller, reg, value) \
+ scu_register_write(\
+ (controller), \
+ (controller)->scu_registers->sdma.reg, \
+ (value) \
+ )
+
+/**
+ * SCU_PUFATHAR_WRITE() -
+ *
+ * struct scu_sdma_registers
+ */
+#define SCU_PUFATHAR_WRITE(controller, address) \
+ { \
+ scu_sdma_register_write(\
+ controller, \
+ uf_address_table_lower, \
+ lower_32_bits(address) \
+ ); \
+ scu_sdma_register_write(\
+ controller, \
+ uf_address_table_upper, \
+ upper_32_bits(address) \
+ ); \
+ }
+
+#define SCU_UFHBAR_WRITE(controller, address) \
+ { \
+ scu_sdma_register_write(\
+ controller, \
+ uf_header_base_address_lower, \
+ lower_32_bits(address) \
+ ); \
+ scu_sdma_register_write(\
+ controller, \
+ uf_header_base_address_upper, \
+ upper_32_bits(address) \
+ ); \
+ }
+
+#define SCU_UFQC_READ(controller) \
+ scu_sdma_register_read(\
+ controller, \
+ unsolicited_frame_queue_control \
+ )
+
+#define SCU_UFQC_WRITE(controller, value) \
+ scu_sdma_register_write(\
+ controller, \
+ unsolicited_frame_queue_control, \
+ value \
+ )
+
+#define SCU_UFQPP_READ(controller) \
+ scu_sdma_register_read(\
+ controller, \
+ unsolicited_frame_put_pointer \
+ )
+
+#define SCU_UFQPP_WRITE(controller, value) \
+ scu_sdma_register_write(\
+ controller, \
+ unsolicited_frame_put_pointer, \
+ value \
+ )
+
+#define SCU_UFQGP_WRITE(controller, value) \
+ scu_sdma_register_write(\
+ controller, \
+ unsolicited_frame_get_pointer, \
+ value \
+ )
+
+#define SCU_PDMACR_READ(controller) \
+ scu_sdma_register_read(\
+ controller, \
+ pdma_configuration \
+ )
+
+#define SCU_PDMACR_WRITE(controller, value) \
+ scu_sdma_register_write(\
+ controller, \
+ pdma_configuration, \
+ value \
+ )
+
+#define SCU_CDMACR_READ(controller) \
+ scu_sdma_register_read(\
+ controller, \
+ cdma_configuration \
+ )
+
+#define SCU_CDMACR_WRITE(controller, value) \
+ scu_sdma_register_write(\
+ controller, \
+ cdma_configuration, \
+ value \
+ )
+
+/*
+ * *****************************************************************************
+ * * SCU Port Task Scheduler Group Registers
+ * ***************************************************************************** */
+
+/**
+ * scu_ptsg_register_read() -
+ *
+ * SCU_PTSG_REGISTER_ACCESS_MACROS
+ */
+#define scu_ptsg_register_read(controller, reg) \
+ scu_register_read(\
+ (controller), \
+ (controller)->scu_registers->peg0.ptsg.reg \
+ )
+
+#define scu_ptsg_register_write(controller, reg, value) \
+ scu_register_write(\
+ (controller), \
+ (controller)->scu_registers->peg0.ptsg.reg, \
+ (value) \
+ )
+
+/**
+ * SCU_PTSGCR_READ() -
+ *
+ * SCU_PTSG_REGISTERS
+ */
+#define SCU_PTSGCR_READ(controller) \
+ scu_ptsg_register_read(\
+ (controller), \
+ control \
+ )
+
+#define SCU_PTSGCR_WRITE(controller, value) \
+ scu_ptsg_register_write(\
+ (controller), \
+ control, \
+ value \
+ )
+
+#define SCU_PTSGRTC_READ(controller) \
+ scu_ptsg_register_read(\
+ contoller, \
+ real_time_clock \
+ )
+
+#endif /* _SCIC_SDS_CONTROLLER_REGISTERS_H_ */
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