isci: uplevel request infrastructure
Dan Williams [Tue, 10 May 2011 09:28:45 +0000 (02:28 -0700)]
* Consolidate tiny header files
* Move files out of core/ (drop core/scic_sds_ prefix)
* Merge core/scic_sds_request.[ch] into request.[ch]
* Cleanup request.c namespace (clean forward declarations and global
  namespace pollution)

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

27 files changed:
drivers/scsi/isci/Makefile
drivers/scsi/isci/core/sci_util.c [deleted file]
drivers/scsi/isci/core/sci_util.h [deleted file]
drivers/scsi/isci/core/scic_io_request.h [deleted file]
drivers/scsi/isci/core/scic_sds_phy.c
drivers/scsi/isci/core/scic_sds_port.c
drivers/scsi/isci/core/scic_sds_request.c [deleted file]
drivers/scsi/isci/core/scic_sds_request.h [deleted file]
drivers/scsi/isci/core/scic_sds_smp_request.h [deleted file]
drivers/scsi/isci/core/scic_sds_stp_packet_request.h [deleted file]
drivers/scsi/isci/core/scic_sds_stp_pio_request.h [deleted file]
drivers/scsi/isci/core/scic_task_request.h [deleted file]
drivers/scsi/isci/host.c
drivers/scsi/isci/isci.h
drivers/scsi/isci/port.c
drivers/scsi/isci/remote_device.c
drivers/scsi/isci/remote_node_context.c
drivers/scsi/isci/remote_node_table.c
drivers/scsi/isci/request.c
drivers/scsi/isci/request.h
drivers/scsi/isci/sata.c
drivers/scsi/isci/smp_request.c [moved from drivers/scsi/isci/core/scic_sds_smp_request.c with 99% similarity]
drivers/scsi/isci/ssp_request.c [moved from drivers/scsi/isci/core/scic_sds_ssp_request.c with 99% similarity]
drivers/scsi/isci/stp_request.c [moved from drivers/scsi/isci/core/scic_sds_stp_request.c with 99% similarity]
drivers/scsi/isci/stp_request.h [moved from drivers/scsi/isci/core/scic_sds_stp_request.h with 77% similarity]
drivers/scsi/isci/task.c
drivers/scsi/isci/unsolicited_frame_control.c

index cfc640f..a7d1eb3 100644 (file)
@@ -7,11 +7,9 @@ isci-objs := init.o phy.o request.o sata.o \
             remote_node_context.o \
             remote_node_table.o \
             unsolicited_frame_control.o \
-            core/scic_sds_request.o \
-            core/scic_sds_stp_request.o \
+            stp_request.o \
+            ssp_request.o \
+            smp_request.o \
             core/scic_sds_port.o \
             core/scic_sds_port_configuration_agent.o \
             core/scic_sds_phy.o \
-            core/scic_sds_ssp_request.o \
-            core/scic_sds_smp_request.o \
-            core/sci_util.o
diff --git a/drivers/scsi/isci/core/sci_util.c b/drivers/scsi/isci/core/sci_util.c
deleted file mode 100644 (file)
index 595d8da..0000000
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * 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/kernel.h>
-#include "sci_util.h"
-#include "request.h"
-
-void *scic_request_get_virt_addr(struct scic_sds_request *sci_req, dma_addr_t phys_addr)
-{
-       struct isci_request *ireq = sci_req_to_ireq(sci_req);
-       dma_addr_t offset;
-
-       BUG_ON(phys_addr < ireq->request_daddr);
-
-       offset = phys_addr - ireq->request_daddr;
-
-       BUG_ON(offset >= sizeof(*ireq));
-
-       return (char *)ireq + offset;
-}
-
-dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request,
-                                       void *virt_addr)
-{
-       struct isci_request *isci_request = sci_req_to_ireq(sds_request);
-
-       char *requested_addr = (char *)virt_addr;
-       char *base_addr = (char *)isci_request;
-
-       BUG_ON(requested_addr < base_addr);
-       BUG_ON((requested_addr - base_addr) >= sizeof(*isci_request));
-
-       return isci_request->request_daddr + (requested_addr - base_addr);
-}
diff --git a/drivers/scsi/isci/core/sci_util.h b/drivers/scsi/isci/core/sci_util.h
deleted file mode 100644 (file)
index 0f9dd0f..0000000
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * 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_UTIL_H_
-#define _SCI_UTIL_H_
-
-#include "scic_sds_request.h"
-
-#define SCIC_BUILD_DWORD(char_buffer) \
-       (\
-               ((char_buffer)[0] << 24) \
-               | ((char_buffer)[1] << 16) \
-               | ((char_buffer)[2] <<  8) \
-               | ((char_buffer)[3]) \
-       )
-
-#define sci_cb_make_physical_address(physical_addr, addr_upper, addr_lower) \
-       ((physical_addr) = (addr_lower) | ((u64)addr_upper) << 32)
-
-/**
- * sci_swab32_cpy - convert between scsi and scu-hardware byte format
- * @dest: receive the 4-byte endian swapped version of src
- * @src: word aligned source buffer
- *
- * scu hardware handles SSP/SMP control, response, and unidentified
- * frames in "big endian dword" order.  Regardless of host endian this
- * is always a swab32()-per-dword conversion of the standard definition,
- * i.e. single byte fields swapped and multi-byte fields in little-
- * endian
- */
-static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
-{
-       u32 *dest = _dest, *src = _src;
-
-       while (--word_cnt >= 0)
-               dest[word_cnt] = swab32(src[word_cnt]);
-}
-
-void *scic_request_get_virt_addr(struct scic_sds_request *sds_request,
-                                dma_addr_t phys_addr);
-
-dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request,
-                                       void *virt_addr);
-
-#endif /* _SCI_UTIL_H_ */
diff --git a/drivers/scsi/isci/core/scic_io_request.h b/drivers/scsi/isci/core/scic_io_request.h
deleted file mode 100644 (file)
index a4664cc..0000000
+++ /dev/null
@@ -1,226 +0,0 @@
-/*
- * 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_IO_REQUEST_H_
-#define _SCIC_IO_REQUEST_H_
-
-#include <linux/kernel.h>
-
-struct scic_sds_request;
-struct scic_sds_remote_device;
-struct scic_sds_controller;
-
-/**
- * This enumeration specifies the transport protocol utilized for the request.
- *
- *
- */
-typedef enum {
-       /**
-        * This enumeration constant indicates that no protocol has yet been
-        * set.
-        */
-       SCIC_NO_PROTOCOL,
-
-       /**
-        * This enumeration constant indicates that the protocol utilized
-        * is the Serial Management Protocol.
-        */
-       SCIC_SMP_PROTOCOL,
-
-       /**
-        * This enumeration constant indicates that the protocol utilized
-        * is the Serial SCSI Protocol.
-        */
-       SCIC_SSP_PROTOCOL,
-
-       /**
-        * This enumeration constant indicates that the protocol utilized
-        * is the Serial-ATA Tunneling Protocol.
-        */
-       SCIC_STP_PROTOCOL
-
-} SCIC_TRANSPORT_PROTOCOL;
-
-enum sci_status scic_io_request_construct(
-       struct scic_sds_controller *scic_controller,
-       struct scic_sds_remote_device *scic_remote_device,
-       u16 io_tag, struct scic_sds_request *sci_req);
-
-/**
- * scic_io_request_construct_basic_ssp() - This method is called by the SCI
- *    user to build an SSP IO request.
- * @scic_io_request: This parameter specifies the handle to the io request
- *    object to be built.
- *
- * - The user must have previously called scic_io_request_construct() on the
- * supplied IO request. Indicate if the controller successfully built the IO
- * request. SCI_SUCCESS This value is returned if the IO request was
- * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
- * if the remote_device does not support the SSP protocol.
- * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
- * properly set the association between the SCIC IO request and the user's IO
- * request.
- */
-enum sci_status scic_io_request_construct_basic_ssp(
-       struct scic_sds_request *scic_io_request);
-
-
-
-
-
-/**
- * scic_io_request_construct_basic_sata() - This method is called by the SCI
- *    Core user to build an STP IO request.
- * @scic_io_request: This parameter specifies the handle to the io request
- *    object to be built.
- *
- * - The user must have previously called scic_io_request_construct() on the
- * supplied IO request. Indicate if the controller successfully built the IO
- * request. SCI_SUCCESS This value is returned if the IO request was
- * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
- * if the remote_device does not support the STP protocol.
- * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
- * properly set the association between the SCIC IO request and the user's IO
- * request.
- */
-enum sci_status scic_io_request_construct_basic_sata(
-       struct scic_sds_request *scic_io_request);
-
-
-
-
-/**
- * scic_io_request_construct_smp() - This method is called by the SCI user to
- *    build an SMP IO request.
- * @scic_io_request: This parameter specifies the handle to the io request
- *    object to be built.
- *
- * - The user must have previously called scic_io_request_construct() on the
- * supplied IO request. Indicate if the controller successfully built the IO
- * request. SCI_SUCCESS This value is returned if the IO request was
- * successfully built. SCI_FAILURE_UNSUPPORTED_PROTOCOL This value is returned
- * if the remote_device does not support the SMP protocol.
- * SCI_FAILURE_INVALID_ASSOCIATION This value is returned if the user did not
- * properly set the association between the SCIC IO request and the user's IO
- * request.
- */
-enum sci_status scic_io_request_construct_smp(
-       struct scic_sds_request *scic_io_request);
-
-
-
-/**
- * scic_request_get_controller_status() - This method returns the controller
- *    specific IO/Task request status. These status values are unique to the
- *    specific controller being managed by the SCIC.
- * @io_request: the handle to the IO or task management request object for
- *    which to retrieve the status.
- *
- * This method returns a value indicating the controller specific request
- * status.
- */
-u32 scic_request_get_controller_status(
-       struct scic_sds_request *io_request);
-
-/**
- * scic_io_request_get_io_tag() - This method will return the IO tag utilized
- *    by the IO request.
- * @scic_io_request: This parameter specifies the handle to the io request
- *    object for which to return the IO tag.
- *
- * An unsigned integer representing the IO tag being utilized.
- * SCI_CONTROLLER_INVALID_IO_TAG This value is returned if the IO does not
- * currently have an IO tag allocated to it. All return other values indicate a
- * legitimate tag.
- */
-u16 scic_io_request_get_io_tag(
-       struct scic_sds_request *scic_io_request);
-
-
-/**
- * scic_stp_io_request_set_ncq_tag() - This method will assign an NCQ tag to
- *    the io request object.  The caller of this function must make sure that
- *    only valid NCQ tags are assigned to the io request object.
- * @scic_io_request: This parameter specifies the handle to the io request
- *    object to which to assign the ncq tag.
- * @ncq_tag: This parameter specifies the NCQ tag to be utilized for the
- *    supplied core IO request.  It is up to the user to make sure that this is
- *    a valid NCQ tag.
- *
- * none This function is only valid for SATA NCQ requests.
- */
-void scic_stp_io_request_set_ncq_tag(
-       struct scic_sds_request *scic_io_request,
-       u16 ncq_tag);
-
-/**
- * scic_io_request_get_number_of_bytes_transferred() - This method will return
- *    the number of bytes transferred from the SCU
- * @scic_io_request: This parameter specifies the handle to the io request
- *    whose data length was not eqaul to the data length specified in the
- *    request. When the driver gets an early io completion status from the
- *    hardware, this routine should be called to get the actual number of bytes
- *    transferred
- *
- * The return is the number of bytes transferred when the data legth is not
- * equal to the specified length in the io request
- */
-u32 scic_io_request_get_number_of_bytes_transferred(
-       struct scic_sds_request *scic_io_request);
-
-
-#endif  /* _SCIC_IO_REQUEST_H_ */
-
index 6b49d94..150509b 100644 (file)
@@ -61,7 +61,6 @@
 #include "scic_sds_phy.h"
 #include "scic_sds_port.h"
 #include "remote_node_context.h"
-#include "sci_util.h"
 #include "scu_event_codes.h"
 #include "timers.h"
 
index 652917e..a9f3ce1 100644 (file)
@@ -60,9 +60,9 @@
 #include "scic_sds_port.h"
 #include "remote_device.h"
 #include "remote_node_context.h"
-#include "scic_sds_request.h"
 #include "registers.h"
 #include "timers.h"
+#include "scu_task_context.h"
 
 #define SCIC_SDS_PORT_MIN_TIMER_COUNT  (SCI_MAX_PORTS)
 #define SCIC_SDS_PORT_MAX_TIMER_COUNT  (SCI_MAX_PORTS)
diff --git a/drivers/scsi/isci/core/scic_sds_request.c b/drivers/scsi/isci/core/scic_sds_request.c
deleted file mode 100644 (file)
index cd27960..0000000
+++ /dev/null
@@ -1,1523 +0,0 @@
-/*
- * 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 <scsi/sas.h>
-#include "scic_io_request.h"
-#include "registers.h"
-#include "scic_sds_port.h"
-#include "remote_device.h"
-#include "scic_sds_request.h"
-#include "scic_sds_smp_request.h"
-#include "scic_sds_stp_request.h"
-#include "unsolicited_frame_control.h"
-#include "sci_util.h"
-#include "scu_completion_codes.h"
-#include "scu_task_context.h"
-#include "request.h"
-#include "task.h"
-
-/*
- * ****************************************************************************
- * * SCIC SDS IO REQUEST CONSTANTS
- * **************************************************************************** */
-
-/**
- *
- *
- * We have no timer requirements for IO requests right now
- */
-#define SCIC_SDS_IO_REQUEST_MINIMUM_TIMER_COUNT (0)
-#define SCIC_SDS_IO_REQUEST_MAXIMUM_TIMER_COUNT (0)
-
-/**
- * This method returns the sgl element pair for the specificed sgl_pair index.
- * @sci_req: This parameter specifies the IO request for which to retrieve
- *    the Scatter-Gather List element pair.
- * @sgl_pair_index: This parameter specifies the index into the SGL element
- *    pair to be retrieved.
- *
- * This method returns a pointer to an struct scu_sgl_element_pair.
- */
-static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair(
-       struct scic_sds_request *sci_req,
-       u32 sgl_pair_index
-       ) {
-       struct scu_task_context *task_context;
-
-       task_context = (struct scu_task_context *)sci_req->task_context_buffer;
-
-       if (sgl_pair_index == 0) {
-               return &task_context->sgl_pair_ab;
-       } else if (sgl_pair_index == 1) {
-               return &task_context->sgl_pair_cd;
-       }
-
-       return &sci_req->sg_table[sgl_pair_index - 2];
-}
-
-/**
- * This function will build the SGL list for an IO request.
- * @sci_req: This parameter specifies the IO request for which to build
- *    the Scatter-Gather List.
- *
- */
-void scic_sds_request_build_sgl(struct scic_sds_request *sds_request)
-{
-       struct isci_request *isci_request = sci_req_to_ireq(sds_request);
-       struct isci_host *isci_host = isci_request->isci_host;
-       struct sas_task *task = isci_request_access_task(isci_request);
-       struct scatterlist *sg = NULL;
-       dma_addr_t dma_addr;
-       u32 sg_idx = 0;
-       struct scu_sgl_element_pair *scu_sg   = NULL;
-       struct scu_sgl_element_pair *prev_sg  = NULL;
-
-       if (task->num_scatter > 0) {
-               sg = task->scatter;
-
-               while (sg) {
-                       scu_sg = scic_sds_request_get_sgl_element_pair(
-                                       sds_request,
-                                       sg_idx);
-
-                       SCU_SGL_COPY(scu_sg->A, sg);
-
-                       sg = sg_next(sg);
-
-                       if (sg) {
-                               SCU_SGL_COPY(scu_sg->B, sg);
-                               sg = sg_next(sg);
-                       } else
-                               SCU_SGL_ZERO(scu_sg->B);
-
-                       if (prev_sg) {
-                               dma_addr =
-                                       scic_io_request_get_dma_addr(
-                                                       sds_request,
-                                                       scu_sg);
-
-                               prev_sg->next_pair_upper =
-                                       upper_32_bits(dma_addr);
-                               prev_sg->next_pair_lower =
-                                       lower_32_bits(dma_addr);
-                       }
-
-                       prev_sg = scu_sg;
-                       sg_idx++;
-               }
-       } else {        /* handle when no sg */
-               scu_sg = scic_sds_request_get_sgl_element_pair(sds_request,
-                                                              sg_idx);
-
-               dma_addr = dma_map_single(&isci_host->pdev->dev,
-                                         task->scatter,
-                                         task->total_xfer_len,
-                                         task->data_dir);
-
-               isci_request->zero_scatter_daddr = dma_addr;
-
-               scu_sg->A.length = task->total_xfer_len;
-               scu_sg->A.address_upper = upper_32_bits(dma_addr);
-               scu_sg->A.address_lower = lower_32_bits(dma_addr);
-       }
-
-       if (scu_sg) {
-               scu_sg->next_pair_upper = 0;
-               scu_sg->next_pair_lower = 0;
-       }
-}
-
-static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req)
-{
-       if (sci_req->was_tag_assigned_by_user == false)
-               sci_req->task_context_buffer = &sci_req->tc;
-}
-
-static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req)
-{
-       struct ssp_cmd_iu *cmd_iu;
-       struct isci_request *ireq = sci_req_to_ireq(sci_req);
-       struct sas_task *task = isci_request_access_task(ireq);
-
-       cmd_iu = &sci_req->ssp.cmd;
-
-       memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8);
-       cmd_iu->add_cdb_len = 0;
-       cmd_iu->_r_a = 0;
-       cmd_iu->_r_b = 0;
-       cmd_iu->en_fburst = 0; /* unsupported */
-       cmd_iu->task_prio = task->ssp_task.task_prio;
-       cmd_iu->task_attr = task->ssp_task.task_attr;
-       cmd_iu->_r_c = 0;
-
-       sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb,
-                      sizeof(task->ssp_task.cdb) / sizeof(u32));
-}
-
-static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req)
-{
-       struct ssp_task_iu *task_iu;
-       struct isci_request *ireq = sci_req_to_ireq(sci_req);
-       struct sas_task *task = isci_request_access_task(ireq);
-       struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
-
-       task_iu = &sci_req->ssp.tmf;
-
-       memset(task_iu, 0, sizeof(struct ssp_task_iu));
-
-       memcpy(task_iu->LUN, task->ssp_task.LUN, 8);
-
-       task_iu->task_func = isci_tmf->tmf_code;
-       task_iu->task_tag =
-               (ireq->ttype == tmf_task) ?
-               isci_tmf->io_tag :
-               SCI_CONTROLLER_INVALID_IO_TAG;
-}
-
-/**
- * This method is will fill in the SCU Task Context for any type of SSP request.
- * @sci_req:
- * @task_context:
- *
- */
-static void scu_ssp_reqeust_construct_task_context(
-       struct scic_sds_request *sds_request,
-       struct scu_task_context *task_context)
-{
-       dma_addr_t dma_addr;
-       struct scic_sds_controller *controller;
-       struct scic_sds_remote_device *target_device;
-       struct scic_sds_port *target_port;
-
-       controller = scic_sds_request_get_controller(sds_request);
-       target_device = scic_sds_request_get_device(sds_request);
-       target_port = scic_sds_request_get_port(sds_request);
-
-       /* Fill in the TC with the its required data */
-       task_context->abort = 0;
-       task_context->priority = 0;
-       task_context->initiator_request = 1;
-       task_context->connection_rate = target_device->connection_rate;
-       task_context->protocol_engine_index =
-               scic_sds_controller_get_protocol_engine_group(controller);
-       task_context->logical_port_index =
-               scic_sds_port_get_index(target_port);
-       task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
-       task_context->valid = SCU_TASK_CONTEXT_VALID;
-       task_context->context_type = SCU_TASK_CONTEXT_TYPE;
-
-       task_context->remote_node_index =
-               scic_sds_remote_device_get_index(sds_request->target_device);
-       task_context->command_code = 0;
-
-       task_context->link_layer_control = 0;
-       task_context->do_not_dma_ssp_good_response = 1;
-       task_context->strict_ordering = 0;
-       task_context->control_frame = 0;
-       task_context->timeout_enable = 0;
-       task_context->block_guard_enable = 0;
-
-       task_context->address_modifier = 0;
-
-       /* task_context->type.ssp.tag = sci_req->io_tag; */
-       task_context->task_phase = 0x01;
-
-       if (sds_request->was_tag_assigned_by_user) {
-               /*
-                * Build the task context now since we have already read
-                * the data
-                */
-               sds_request->post_context =
-                       (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
-                        (scic_sds_controller_get_protocol_engine_group(
-                                                       controller) <<
-                         SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
-                        (scic_sds_port_get_index(target_port) <<
-                         SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
-                        scic_sds_io_tag_get_index(sds_request->io_tag));
-       } else {
-               /*
-                * Build the task context now since we have already read
-                * the data
-                *
-                * I/O tag index is not assigned because we have to wait
-                * until we get a TCi
-                */
-               sds_request->post_context =
-                       (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
-                        (scic_sds_controller_get_protocol_engine_group(
-                                                       owning_controller) <<
-                         SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
-                        (scic_sds_port_get_index(target_port) <<
-                         SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
-       }
-
-       /*
-        * Copy the physical address for the command buffer to the
-        * SCU Task Context
-        */
-       dma_addr = scic_io_request_get_dma_addr(sds_request,
-                                               &sds_request->ssp.cmd);
-
-       task_context->command_iu_upper = upper_32_bits(dma_addr);
-       task_context->command_iu_lower = lower_32_bits(dma_addr);
-
-       /*
-        * Copy the physical address for the response buffer to the
-        * SCU Task Context
-        */
-       dma_addr = scic_io_request_get_dma_addr(sds_request,
-                                               &sds_request->ssp.rsp);
-
-       task_context->response_iu_upper = upper_32_bits(dma_addr);
-       task_context->response_iu_lower = lower_32_bits(dma_addr);
-}
-
-/**
- * This method is will fill in the SCU Task Context for a SSP IO request.
- * @sci_req:
- *
- */
-static void scu_ssp_io_request_construct_task_context(
-       struct scic_sds_request *sci_req,
-       enum dma_data_direction dir,
-       u32 len)
-{
-       struct scu_task_context *task_context;
-
-       task_context = scic_sds_request_get_task_context(sci_req);
-
-       scu_ssp_reqeust_construct_task_context(sci_req, task_context);
-
-       task_context->ssp_command_iu_length =
-               sizeof(struct ssp_cmd_iu) / sizeof(u32);
-       task_context->type.ssp.frame_type = SSP_COMMAND;
-
-       switch (dir) {
-       case DMA_FROM_DEVICE:
-       case DMA_NONE:
-       default:
-               task_context->task_type = SCU_TASK_TYPE_IOREAD;
-               break;
-       case DMA_TO_DEVICE:
-               task_context->task_type = SCU_TASK_TYPE_IOWRITE;
-               break;
-       }
-
-       task_context->transfer_length_bytes = len;
-
-       if (task_context->transfer_length_bytes > 0)
-               scic_sds_request_build_sgl(sci_req);
-}
-
-static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req)
-{
-       if (sci_req->was_tag_assigned_by_user == false)
-               sci_req->task_context_buffer = &sci_req->tc;
-}
-
-/**
- * This method will fill in the SCU Task Context for a SSP Task request.  The
- *    following important settings are utilized: -# priority ==
- *    SCU_TASK_PRIORITY_HIGH.  This ensures that the task request is issued
- *    ahead of other task destined for the same Remote Node. -# task_type ==
- *    SCU_TASK_TYPE_IOREAD.  This simply indicates that a normal request type
- *    (i.e. non-raw frame) is being utilized to perform task management. -#
- *    control_frame == 1.  This ensures that the proper endianess is set so
- *    that the bytes are transmitted in the right order for a task frame.
- * @sci_req: This parameter specifies the task request object being
- *    constructed.
- *
- */
-static void scu_ssp_task_request_construct_task_context(
-       struct scic_sds_request *sci_req)
-{
-       struct scu_task_context *task_context;
-
-       task_context = scic_sds_request_get_task_context(sci_req);
-
-       scu_ssp_reqeust_construct_task_context(sci_req, task_context);
-
-       task_context->control_frame                = 1;
-       task_context->priority                     = SCU_TASK_PRIORITY_HIGH;
-       task_context->task_type                    = SCU_TASK_TYPE_RAW_FRAME;
-       task_context->transfer_length_bytes        = 0;
-       task_context->type.ssp.frame_type          = SSP_TASK;
-       task_context->ssp_command_iu_length =
-               sizeof(struct ssp_task_iu) / sizeof(u32);
-}
-
-
-/**
- * This method constructs the SSP Command IU data for this ssp passthrough
- *    comand request object.
- * @sci_req: This parameter specifies the request object for which the SSP
- *    command information unit is being built.
- *
- * enum sci_status, returns invalid parameter is cdb > 16
- */
-
-
-/**
- * This method constructs the SATA request object.
- * @sci_req:
- * @sat_protocol:
- * @transfer_length:
- * @data_direction:
- * @copy_rx_frame:
- *
- * enum sci_status
- */
-static enum sci_status
-scic_io_request_construct_sata(struct scic_sds_request *sci_req,
-                              u32 len,
-                              enum dma_data_direction dir,
-                              bool copy)
-{
-       enum sci_status status = SCI_SUCCESS;
-       struct isci_request *ireq = sci_req_to_ireq(sci_req);
-       struct sas_task *task = isci_request_access_task(ireq);
-
-       /* check for management protocols */
-       if (ireq->ttype == tmf_task) {
-               struct isci_tmf *tmf = isci_request_access_tmf(ireq);
-
-               if (tmf->tmf_code == isci_tmf_sata_srst_high ||
-                   tmf->tmf_code == isci_tmf_sata_srst_low)
-                       return scic_sds_stp_soft_reset_request_construct(sci_req);
-               else {
-                       dev_err(scic_to_dev(sci_req->owning_controller),
-                               "%s: Request 0x%p received un-handled SAT "
-                               "management protocol 0x%x.\n",
-                               __func__, sci_req, tmf->tmf_code);
-
-                       return SCI_FAILURE;
-               }
-       }
-
-       if (!sas_protocol_ata(task->task_proto)) {
-               dev_err(scic_to_dev(sci_req->owning_controller),
-                       "%s: Non-ATA protocol in SATA path: 0x%x\n",
-                       __func__,
-                       task->task_proto);
-               return SCI_FAILURE;
-
-       }
-
-       /* non data */
-       if (task->data_dir == DMA_NONE)
-               return scic_sds_stp_non_data_request_construct(sci_req);
-
-       /* NCQ */
-       if (task->ata_task.use_ncq)
-               return scic_sds_stp_ncq_request_construct(sci_req, len, dir);
-
-       /* DMA */
-       if (task->ata_task.dma_xfer)
-               return scic_sds_stp_udma_request_construct(sci_req, len, dir);
-       else /* PIO */
-               return scic_sds_stp_pio_request_construct(sci_req, copy);
-
-       return status;
-}
-
-enum sci_status scic_io_request_construct_basic_ssp(
-       struct scic_sds_request *sci_req)
-{
-       struct isci_request *ireq = sci_req_to_ireq(sci_req);
-       struct sas_task *task = isci_request_access_task(ireq);
-
-       sci_req->protocol = SCIC_SSP_PROTOCOL;
-
-       scu_ssp_io_request_construct_task_context(sci_req,
-                                                 task->data_dir,
-                                                 task->total_xfer_len);
-
-       scic_sds_io_request_build_ssp_command_iu(sci_req);
-
-       sci_base_state_machine_change_state(
-                       &sci_req->state_machine,
-                       SCI_BASE_REQUEST_STATE_CONSTRUCTED);
-
-       return SCI_SUCCESS;
-}
-
-
-enum sci_status scic_task_request_construct_ssp(
-       struct scic_sds_request *sci_req)
-{
-       /* Construct the SSP Task SCU Task Context */
-       scu_ssp_task_request_construct_task_context(sci_req);
-
-       /* Fill in the SSP Task IU */
-       scic_sds_task_request_build_ssp_task_iu(sci_req);
-
-       sci_base_state_machine_change_state(&sci_req->state_machine,
-               SCI_BASE_REQUEST_STATE_CONSTRUCTED);
-
-       return SCI_SUCCESS;
-}
-
-
-enum sci_status scic_io_request_construct_basic_sata(
-               struct scic_sds_request *sci_req)
-{
-       enum sci_status status;
-       struct scic_sds_stp_request *stp_req;
-       bool copy = false;
-       struct isci_request *isci_request = sci_req_to_ireq(sci_req);
-       struct sas_task *task = isci_request_access_task(isci_request);
-
-       stp_req = &sci_req->stp.req;
-       sci_req->protocol = SCIC_STP_PROTOCOL;
-
-       copy = (task->data_dir == DMA_NONE) ? false : true;
-
-       status = scic_io_request_construct_sata(sci_req,
-                                               task->total_xfer_len,
-                                               task->data_dir,
-                                               copy);
-
-       if (status == SCI_SUCCESS)
-               sci_base_state_machine_change_state(&sci_req->state_machine,
-                       SCI_BASE_REQUEST_STATE_CONSTRUCTED);
-
-       return status;
-}
-
-
-enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req)
-{
-       enum sci_status status = SCI_SUCCESS;
-       struct isci_request *ireq = sci_req_to_ireq(sci_req);
-
-       /* check for management protocols */
-       if (ireq->ttype == tmf_task) {
-               struct isci_tmf *tmf = isci_request_access_tmf(ireq);
-
-               if (tmf->tmf_code == isci_tmf_sata_srst_high ||
-                   tmf->tmf_code == isci_tmf_sata_srst_low) {
-                       status = scic_sds_stp_soft_reset_request_construct(sci_req);
-               } else {
-                       dev_err(scic_to_dev(sci_req->owning_controller),
-                               "%s: Request 0x%p received un-handled SAT "
-                               "Protocol 0x%x.\n",
-                               __func__, sci_req, tmf->tmf_code);
-
-                       return SCI_FAILURE;
-               }
-       }
-
-       if (status == SCI_SUCCESS)
-               sci_base_state_machine_change_state(
-                               &sci_req->state_machine,
-                               SCI_BASE_REQUEST_STATE_CONSTRUCTED);
-
-       return status;
-}
-
-
-u16 scic_io_request_get_io_tag(
-       struct scic_sds_request *sci_req)
-{
-       return sci_req->io_tag;
-}
-
-
-u32 scic_request_get_controller_status(
-       struct scic_sds_request *sci_req)
-{
-       return sci_req->scu_status;
-}
-
-#define SCU_TASK_CONTEXT_SRAM 0x200000
-u32 scic_io_request_get_number_of_bytes_transferred(
-       struct scic_sds_request *scic_sds_request)
-{
-       struct scic_sds_controller *scic = scic_sds_request->owning_controller;
-       u32 ret_val = 0;
-
-       if (readl(&scic->smu_registers->address_modifier) == 0) {
-               void __iomem *scu_reg_base = scic->scu_registers;
-               /*
-                * get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where
-                *   BAR1 is the scu_registers
-                *   0x20002C = 0x200000 + 0x2c
-                *            = start of task context SRAM + offset of (type.ssp.data_offset)
-                *   TCi is the io_tag of struct scic_sds_request */
-               ret_val = readl(scu_reg_base +
-                               (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) +
-                               ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(scic_sds_request->io_tag)));
-       }
-
-       return ret_val;
-}
-
-
-/*
- * ****************************************************************************
- * * SCIC SDS Interface Implementation
- * **************************************************************************** */
-
-enum sci_status
-scic_sds_request_start(struct scic_sds_request *request)
-{
-       if (request->device_sequence !=
-           scic_sds_remote_device_get_sequence(request->target_device))
-               return SCI_FAILURE;
-
-       if (request->state_handlers->start_handler)
-               return request->state_handlers->start_handler(request);
-
-       dev_warn(scic_to_dev(request->owning_controller),
-                "%s: SCIC IO Request requested to start while in wrong "
-                "state %d\n",
-                __func__,
-                sci_base_state_machine_get_state(&request->state_machine));
-
-       return SCI_FAILURE_INVALID_STATE;
-}
-
-enum sci_status
-scic_sds_io_request_terminate(struct scic_sds_request *request)
-{
-       if (request->state_handlers->abort_handler)
-               return request->state_handlers->abort_handler(request);
-
-       dev_warn(scic_to_dev(request->owning_controller),
-               "%s: SCIC IO Request requested to abort while in wrong "
-               "state %d\n",
-               __func__,
-               sci_base_state_machine_get_state(&request->state_machine));
-
-       return SCI_FAILURE_INVALID_STATE;
-}
-
-enum sci_status
-scic_sds_io_request_complete(struct scic_sds_request *request)
-{
-       if (request->state_handlers->complete_handler)
-               return request->state_handlers->complete_handler(request);
-
-       dev_warn(scic_to_dev(request->owning_controller),
-               "%s: SCIC IO Request requested to complete while in wrong "
-               "state %d\n",
-               __func__,
-               sci_base_state_machine_get_state(&request->state_machine));
-
-       return SCI_FAILURE_INVALID_STATE;
-}
-
-enum sci_status scic_sds_io_request_event_handler(
-       struct scic_sds_request *request,
-       u32 event_code)
-{
-       if (request->state_handlers->event_handler)
-               return request->state_handlers->event_handler(request, event_code);
-
-       dev_warn(scic_to_dev(request->owning_controller),
-                "%s: SCIC IO Request given event code notification %x while "
-                "in wrong state %d\n",
-                __func__,
-                event_code,
-                sci_base_state_machine_get_state(&request->state_machine));
-
-       return SCI_FAILURE_INVALID_STATE;
-}
-
-enum sci_status
-scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code)
-{
-       if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED &&
-           request->has_started_substate_machine == false)
-               return scic_sds_request_started_state_tc_completion_handler(request, completion_code);
-       else if (request->state_handlers->tc_completion_handler)
-               return request->state_handlers->tc_completion_handler(request, completion_code);
-
-       dev_warn(scic_to_dev(request->owning_controller),
-               "%s: SCIC IO Request given task completion notification %x "
-               "while in wrong state %d\n",
-               __func__,
-               completion_code,
-               sci_base_state_machine_get_state(&request->state_machine));
-
-       return SCI_FAILURE_INVALID_STATE;
-
-}
-
-
-/**
- *
- * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start
- *    operation is to be executed.
- * @frame_index: The frame index returned by the hardware for the reqeust
- *    object.
- *
- * This method invokes the core state frame handler for the
- * SCIC_SDS_IO_REQUEST_T object. enum sci_status
- */
-enum sci_status scic_sds_io_request_frame_handler(
-       struct scic_sds_request *request,
-       u32 frame_index)
-{
-       if (request->state_handlers->frame_handler)
-               return request->state_handlers->frame_handler(request, frame_index);
-
-       dev_warn(scic_to_dev(request->owning_controller),
-                "%s: SCIC IO Request given unexpected frame %x while in "
-                "state %d\n",
-                __func__,
-                frame_index,
-                sci_base_state_machine_get_state(&request->state_machine));
-
-       scic_sds_controller_release_frame(request->owning_controller, frame_index);
-       return SCI_FAILURE_INVALID_STATE;
-}
-
-/*
- * This function copies response data for requests returning response data
- *    instead of sense data.
- * @sci_req: This parameter specifies the request object for which to copy
- *    the response data.
- */
-void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req)
-{
-       void *resp_buf;
-       u32 len;
-       struct ssp_response_iu *ssp_response;
-       struct isci_request *ireq = sci_req_to_ireq(sci_req);
-       struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
-
-       ssp_response = &sci_req->ssp.rsp;
-
-       resp_buf = &isci_tmf->resp.resp_iu;
-
-       len = min_t(u32,
-                   SSP_RESP_IU_MAX_SIZE,
-                   be32_to_cpu(ssp_response->response_data_len));
-
-       memcpy(resp_buf, ssp_response->resp_data, len);
-}
-
-/*
- * *****************************************************************************
- * *  CONSTRUCTED STATE HANDLERS
- * ***************************************************************************** */
-
-/*
- * This method implements the action taken when a constructed
- * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request.
- * This method will, if necessary, allocate a TCi for the io request object and
- * then will, if necessary, copy the constructed TC data into the actual TC
- * buffer.  If everything is successful the post context field is updated with
- * the TCi so the controller can post the request to the hardware. enum sci_status
- * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES
- */
-static enum sci_status scic_sds_request_constructed_state_start_handler(
-       struct scic_sds_request *request)
-{
-       struct scu_task_context *task_context;
-
-       if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
-               request->io_tag =
-                       scic_controller_allocate_io_tag(request->owning_controller);
-       }
-
-       /* Record the IO Tag in the request */
-       if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) {
-               task_context = request->task_context_buffer;
-
-               task_context->task_index = scic_sds_io_tag_get_index(request->io_tag);
-
-               switch (task_context->protocol_type) {
-               case SCU_TASK_CONTEXT_PROTOCOL_SMP:
-               case SCU_TASK_CONTEXT_PROTOCOL_SSP:
-                       /* SSP/SMP Frame */
-                       task_context->type.ssp.tag = request->io_tag;
-                       task_context->type.ssp.target_port_transfer_tag = 0xFFFF;
-                       break;
-
-               case SCU_TASK_CONTEXT_PROTOCOL_STP:
-                       /*
-                        * STP/SATA Frame
-                        * task_context->type.stp.ncq_tag = request->ncq_tag; */
-                       break;
-
-               case SCU_TASK_CONTEXT_PROTOCOL_NONE:
-                       /* / @todo When do we set no protocol type? */
-                       break;
-
-               default:
-                       /* This should never happen since we build the IO requests */
-                       break;
-               }
-
-               /*
-                * Check to see if we need to copy the task context buffer
-                * or have been building into the task context buffer */
-               if (request->was_tag_assigned_by_user == false) {
-                       scic_sds_controller_copy_task_context(
-                               request->owning_controller, request);
-               }
-
-               /* Add to the post_context the io tag value */
-               request->post_context |= scic_sds_io_tag_get_index(request->io_tag);
-
-               /* Everything is good go ahead and change state */
-               sci_base_state_machine_change_state(&request->state_machine,
-                       SCI_BASE_REQUEST_STATE_STARTED);
-
-               return SCI_SUCCESS;
-       }
-
-       return SCI_FAILURE_INSUFFICIENT_RESOURCES;
-}
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_terminate() request. Since the request
- * has not yet been posted to the hardware the request transitions to the
- * completed state. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_constructed_state_abort_handler(
-       struct scic_sds_request *request)
-{
-       /*
-        * This request has been terminated by the user make sure that the correct
-        * status code is returned */
-       scic_sds_request_set_status(request,
-               SCU_TASK_DONE_TASK_ABORT,
-               SCI_FAILURE_IO_TERMINATED);
-
-       sci_base_state_machine_change_state(&request->state_machine,
-               SCI_BASE_REQUEST_STATE_COMPLETED);
-       return SCI_SUCCESS;
-}
-
-/*
- * *****************************************************************************
- * *  STARTED STATE HANDLERS
- * ***************************************************************************** */
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_terminate() request. Since the request
- * has been posted to the hardware the io request state is changed to the
- * aborting state. enum sci_status SCI_SUCCESS
- */
-enum sci_status scic_sds_request_started_state_abort_handler(
-       struct scic_sds_request *request)
-{
-       if (request->has_started_substate_machine)
-               sci_base_state_machine_stop(&request->started_substate_machine);
-
-       sci_base_state_machine_change_state(&request->state_machine,
-               SCI_BASE_REQUEST_STATE_ABORTING);
-       return SCI_SUCCESS;
-}
-
-/*
- * scic_sds_request_started_state_tc_completion_handler() - This method process
- *    TC (task context) completions for normal IO request (i.e. Task/Abort
- *    Completions of type 0).  This method will update the
- *    SCIC_SDS_IO_REQUEST_T::status field.
- * @sci_req: This parameter specifies the request for which a completion
- *    occurred.
- * @completion_code: This parameter specifies the completion code received from
- *    the SCU.
- *
- */
-enum sci_status
-scic_sds_request_started_state_tc_completion_handler(
-               struct scic_sds_request *sci_req,
-               u32 completion_code)
-{
-       u8 datapres;
-       struct ssp_response_iu *resp_iu;
-
-       /*
-        * TODO: Any SDMA return code of other than 0 is bad
-        *       decode 0x003C0000 to determine SDMA status
-        */
-       switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
-               scic_sds_request_set_status(sci_req,
-                                           SCU_TASK_DONE_GOOD,
-                                           SCI_SUCCESS);
-               break;
-
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP):
-       {
-               /*
-                * There are times when the SCU hardware will return an early
-                * response because the io request specified more data than is
-                * returned by the target device (mode pages, inquiry data,
-                * etc.).  We must check the response stats to see if this is
-                * truly a failed request or a good request that just got
-                * completed early.
-                */
-               struct ssp_response_iu *resp = &sci_req->ssp.rsp;
-               ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
-
-               sci_swab32_cpy(&sci_req->ssp.rsp,
-                              &sci_req->ssp.rsp,
-                              word_cnt);
-
-               if (resp->status == 0) {
-                       scic_sds_request_set_status(
-                               sci_req,
-                               SCU_TASK_DONE_GOOD,
-                               SCI_SUCCESS_IO_DONE_EARLY);
-               } else {
-                       scic_sds_request_set_status(
-                               sci_req,
-                               SCU_TASK_DONE_CHECK_RESPONSE,
-                               SCI_FAILURE_IO_RESPONSE_VALID);
-               }
-       }
-       break;
-
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE):
-       {
-               ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
-
-               sci_swab32_cpy(&sci_req->ssp.rsp,
-                              &sci_req->ssp.rsp,
-                              word_cnt);
-
-               scic_sds_request_set_status(sci_req,
-                                           SCU_TASK_DONE_CHECK_RESPONSE,
-                                           SCI_FAILURE_IO_RESPONSE_VALID);
-               break;
-       }
-
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR):
-               /*
-                * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame
-                * guaranteed to be received before this completion status is
-                * posted?
-                */
-               resp_iu = &sci_req->ssp.rsp;
-               datapres = resp_iu->datapres;
-
-               if ((datapres == 0x01) || (datapres == 0x02)) {
-                       scic_sds_request_set_status(
-                               sci_req,
-                               SCU_TASK_DONE_CHECK_RESPONSE,
-                               SCI_FAILURE_IO_RESPONSE_VALID);
-               } else
-                       scic_sds_request_set_status(
-                               sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
-               break;
-
-       /* only stp device gets suspended. */
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR):
-               if (sci_req->protocol == SCIC_STP_PROTOCOL) {
-                       scic_sds_request_set_status(
-                               sci_req,
-                               SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
-                               SCU_COMPLETION_TL_STATUS_SHIFT,
-                               SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
-               } else {
-                       scic_sds_request_set_status(
-                               sci_req,
-                               SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
-                               SCU_COMPLETION_TL_STATUS_SHIFT,
-                               SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
-               }
-               break;
-
-       /* both stp/ssp device gets suspended */
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED):
-               scic_sds_request_set_status(
-                       sci_req,
-                       SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
-                       SCU_COMPLETION_TL_STATUS_SHIFT,
-                       SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
-               break;
-
-       /* neither ssp nor stp gets suspended. */
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV):
-       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND):
-       default:
-               scic_sds_request_set_status(
-                       sci_req,
-                       SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
-                       SCU_COMPLETION_TL_STATUS_SHIFT,
-                       SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
-               break;
-       }
-
-       /*
-        * TODO: This is probably wrong for ACK/NAK timeout conditions
-        */
-
-       /* In all cases we will treat this as the completion of the IO req. */
-       sci_base_state_machine_change_state(
-                       &sci_req->state_machine,
-                       SCI_BASE_REQUEST_STATE_COMPLETED);
-       return SCI_SUCCESS;
-}
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_frame_handler() request. This method
- * first determines the frame type received.  If this is a response frame then
- * the response data is copied to the io request response buffer for processing
- * at completion time. If the frame type is not a response buffer an error is
- * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE
- */
-static enum sci_status
-scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req,
-                                            u32 frame_index)
-{
-       enum sci_status status;
-       u32 *frame_header;
-       struct ssp_frame_hdr ssp_hdr;
-       ssize_t word_cnt;
-
-       status = scic_sds_unsolicited_frame_control_get_header(
-               &(scic_sds_request_get_controller(sci_req)->uf_control),
-               frame_index,
-               (void **)&frame_header);
-
-       word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
-       sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
-
-       if (ssp_hdr.frame_type == SSP_RESPONSE) {
-               struct ssp_response_iu *resp_iu;
-               ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
-
-               status = scic_sds_unsolicited_frame_control_get_buffer(
-                       &(scic_sds_request_get_controller(sci_req)->uf_control),
-                       frame_index,
-                       (void **)&resp_iu);
-
-               sci_swab32_cpy(&sci_req->ssp.rsp,
-                              resp_iu, word_cnt);
-
-               resp_iu = &sci_req->ssp.rsp;
-
-               if ((resp_iu->datapres == 0x01) ||
-                   (resp_iu->datapres == 0x02)) {
-                       scic_sds_request_set_status(
-                               sci_req,
-                               SCU_TASK_DONE_CHECK_RESPONSE,
-                               SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
-               } else
-                       scic_sds_request_set_status(
-                               sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
-       } else {
-               /* This was not a response frame why did it get forwarded? */
-               dev_err(scic_to_dev(sci_req->owning_controller),
-                       "%s: SCIC IO Request 0x%p received unexpected "
-                       "frame %d type 0x%02x\n",
-                       __func__,
-                       sci_req,
-                       frame_index,
-                       ssp_hdr.frame_type);
-       }
-
-       /*
-        * In any case we are done with this frame buffer return it to the
-        * controller
-        */
-       scic_sds_controller_release_frame(
-               sci_req->owning_controller, frame_index);
-
-       return SCI_SUCCESS;
-}
-
-/*
- * *****************************************************************************
- * *  COMPLETED STATE HANDLERS
- * ***************************************************************************** */
-
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_complete() request. This method frees up
- * any io request resources that have been allocated and transitions the
- * request to its final state. Consider stopping the state machine instead of
- * transitioning to the final state? enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_completed_state_complete_handler(
-       struct scic_sds_request *request)
-{
-       if (request->was_tag_assigned_by_user != true) {
-               scic_controller_free_io_tag(
-                       request->owning_controller, request->io_tag);
-       }
-
-       if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) {
-               scic_sds_controller_release_frame(
-                       request->owning_controller, request->saved_rx_frame_index);
-       }
-
-       sci_base_state_machine_change_state(&request->state_machine,
-               SCI_BASE_REQUEST_STATE_FINAL);
-       return SCI_SUCCESS;
-}
-
-/*
- * *****************************************************************************
- * *  ABORTING STATE HANDLERS
- * ***************************************************************************** */
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_terminate() request. This method is the
- * io request aborting state abort handlers.  On receipt of a multiple
- * terminate requests the io request will transition to the completed state.
- * This should not happen in normal operation. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_aborting_state_abort_handler(
-       struct scic_sds_request *request)
-{
-       sci_base_state_machine_change_state(&request->state_machine,
-               SCI_BASE_REQUEST_STATE_COMPLETED);
-       return SCI_SUCCESS;
-}
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_task_completion() request. This method
- * decodes the completion type waiting for the abort task complete
- * notification. When the abort task complete is received the io request
- * transitions to the completed state. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_aborting_state_tc_completion_handler(
-       struct scic_sds_request *sci_req,
-       u32 completion_code)
-{
-       switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
-       case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT):
-       case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT):
-               scic_sds_request_set_status(
-                       sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED
-                       );
-
-               sci_base_state_machine_change_state(&sci_req->state_machine,
-                       SCI_BASE_REQUEST_STATE_COMPLETED);
-               break;
-
-       default:
-               /*
-                * Unless we get some strange error wait for the task abort to complete
-                * TODO: Should there be a state change for this completion? */
-               break;
-       }
-
-       return SCI_SUCCESS;
-}
-
-/*
- * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
- * object receives a scic_sds_request_frame_handler() request. This method
- * discards the unsolicited frame since we are waiting for the abort task
- * completion. enum sci_status SCI_SUCCESS
- */
-static enum sci_status scic_sds_request_aborting_state_frame_handler(
-       struct scic_sds_request *sci_req,
-       u32 frame_index)
-{
-       /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */
-
-       scic_sds_controller_release_frame(
-               sci_req->owning_controller, frame_index);
-
-       return SCI_SUCCESS;
-}
-
-static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = {
-       [SCI_BASE_REQUEST_STATE_INITIAL] = {
-       },
-       [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
-               .start_handler          = scic_sds_request_constructed_state_start_handler,
-               .abort_handler          = scic_sds_request_constructed_state_abort_handler,
-       },
-       [SCI_BASE_REQUEST_STATE_STARTED] = {
-               .abort_handler          = scic_sds_request_started_state_abort_handler,
-               .tc_completion_handler  = scic_sds_request_started_state_tc_completion_handler,
-               .frame_handler          = scic_sds_request_started_state_frame_handler,
-       },
-       [SCI_BASE_REQUEST_STATE_COMPLETED] = {
-               .complete_handler       = scic_sds_request_completed_state_complete_handler,
-       },
-       [SCI_BASE_REQUEST_STATE_ABORTING] = {
-               .abort_handler          = scic_sds_request_aborting_state_abort_handler,
-               .tc_completion_handler  = scic_sds_request_aborting_state_tc_completion_handler,
-               .frame_handler          = scic_sds_request_aborting_state_frame_handler,
-       },
-       [SCI_BASE_REQUEST_STATE_FINAL] = {
-       },
-};
-
-/**
- * scic_sds_request_initial_state_enter() -
- * @object: This parameter specifies the base object for which the state
- *    transition is occurring.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial
- * base request is constructed. Entry into the initial state sets all handlers
- * for the io request object to their default handlers. none
- */
-static void scic_sds_request_initial_state_enter(void *object)
-{
-       struct scic_sds_request *sci_req = object;
-
-       SET_STATE_HANDLER(
-               sci_req,
-               scic_sds_request_state_handler_table,
-               SCI_BASE_REQUEST_STATE_INITIAL
-               );
-}
-
-/**
- * scic_sds_request_constructed_state_enter() -
- * @object: The io request object that is to enter the constructed state.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers
- * for the the constructed state. none
- */
-static void scic_sds_request_constructed_state_enter(void *object)
-{
-       struct scic_sds_request *sci_req = object;
-
-       SET_STATE_HANDLER(
-               sci_req,
-               scic_sds_request_state_handler_table,
-               SCI_BASE_REQUEST_STATE_CONSTRUCTED
-               );
-}
-
-/**
- * scic_sds_request_started_state_enter() -
- * @object: This parameter specifies the base object for which the state
- *    transition is occurring.  This is cast into a SCIC_SDS_IO_REQUEST object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a
- * SCSI Task request we must enter the started substate machine. none
- */
-static void scic_sds_request_started_state_enter(void *object)
-{
-       struct scic_sds_request *sci_req = object;
-
-       SET_STATE_HANDLER(
-               sci_req,
-               scic_sds_request_state_handler_table,
-               SCI_BASE_REQUEST_STATE_STARTED
-               );
-
-       /*
-        * Most of the request state machines have a started substate machine so
-        * start its execution on the entry to the started state. */
-       if (sci_req->has_started_substate_machine == true)
-               sci_base_state_machine_start(&sci_req->started_substate_machine);
-}
-
-/**
- * scic_sds_request_started_state_exit() -
- * @object: This parameter specifies the base object for which the state
- *    transition is occurring.  This object is cast into a SCIC_SDS_IO_REQUEST
- *    object.
- *
- * This method implements the actions taken when exiting the
- * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be
- * to stop the started substate machine. none
- */
-static void scic_sds_request_started_state_exit(void *object)
-{
-       struct scic_sds_request *sci_req = object;
-
-       if (sci_req->has_started_substate_machine == true)
-               sci_base_state_machine_stop(&sci_req->started_substate_machine);
-}
-
-/**
- * scic_sds_request_completed_state_enter() -
- * @object: This parameter specifies the base object for which the state
- *    transition is occurring.  This object is cast into a SCIC_SDS_IO_REQUEST
- *    object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_COMPLETED state.  This state is entered when the
- * SCIC_SDS_IO_REQUEST has completed.  The method will decode the request
- * completion status and convert it to an enum sci_status to return in the
- * completion callback function. none
- */
-static void scic_sds_request_completed_state_enter(void *object)
-{
-       struct scic_sds_request *sci_req = object;
-       struct scic_sds_controller *scic =
-               scic_sds_request_get_controller(sci_req);
-       struct isci_host *ihost = scic_to_ihost(scic);
-       struct isci_request *ireq = sci_req_to_ireq(sci_req);
-
-       SET_STATE_HANDLER(sci_req,
-                         scic_sds_request_state_handler_table,
-                         SCI_BASE_REQUEST_STATE_COMPLETED);
-
-       /* Tell the SCI_USER that the IO request is complete */
-       if (sci_req->is_task_management_request == false)
-               isci_request_io_request_complete(ihost,
-                                                ireq,
-                                                sci_req->sci_status);
-       else
-               isci_task_request_complete(ihost, ireq, sci_req->sci_status);
-}
-
-/**
- * scic_sds_request_aborting_state_enter() -
- * @object: This parameter specifies the base object for which the state
- *    transition is occurring.  This object is cast into a SCIC_SDS_IO_REQUEST
- *    object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_ABORTING state. none
- */
-static void scic_sds_request_aborting_state_enter(void *object)
-{
-       struct scic_sds_request *sci_req = object;
-
-       /* Setting the abort bit in the Task Context is required by the silicon. */
-       sci_req->task_context_buffer->abort = 1;
-
-       SET_STATE_HANDLER(
-               sci_req,
-               scic_sds_request_state_handler_table,
-               SCI_BASE_REQUEST_STATE_ABORTING
-               );
-}
-
-/**
- * scic_sds_request_final_state_enter() -
- * @object: This parameter specifies the base object for which the state
- *    transition is occurring.  This is cast into a SCIC_SDS_IO_REQUEST object.
- *
- * This method implements the actions taken when entering the
- * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the
- * state handlers in place. none
- */
-static void scic_sds_request_final_state_enter(void *object)
-{
-       struct scic_sds_request *sci_req = object;
-
-       SET_STATE_HANDLER(
-               sci_req,
-               scic_sds_request_state_handler_table,
-               SCI_BASE_REQUEST_STATE_FINAL
-               );
-}
-
-static const struct sci_base_state scic_sds_request_state_table[] = {
-       [SCI_BASE_REQUEST_STATE_INITIAL] = {
-               .enter_state = scic_sds_request_initial_state_enter,
-       },
-       [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
-               .enter_state = scic_sds_request_constructed_state_enter,
-       },
-       [SCI_BASE_REQUEST_STATE_STARTED] = {
-               .enter_state = scic_sds_request_started_state_enter,
-               .exit_state  = scic_sds_request_started_state_exit
-       },
-       [SCI_BASE_REQUEST_STATE_COMPLETED] = {
-               .enter_state = scic_sds_request_completed_state_enter,
-       },
-       [SCI_BASE_REQUEST_STATE_ABORTING] = {
-               .enter_state = scic_sds_request_aborting_state_enter,
-       },
-       [SCI_BASE_REQUEST_STATE_FINAL] = {
-               .enter_state = scic_sds_request_final_state_enter,
-       },
-};
-
-static void scic_sds_general_request_construct(struct scic_sds_controller *scic,
-                                              struct scic_sds_remote_device *sci_dev,
-                                              u16 io_tag, struct scic_sds_request *sci_req)
-{
-       sci_base_state_machine_construct(&sci_req->state_machine, sci_req,
-                       scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL);
-       sci_base_state_machine_start(&sci_req->state_machine);
-
-       sci_req->io_tag = io_tag;
-       sci_req->owning_controller = scic;
-       sci_req->target_device = sci_dev;
-       sci_req->has_started_substate_machine = false;
-       sci_req->protocol = SCIC_NO_PROTOCOL;
-       sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX;
-       sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev);
-
-       sci_req->sci_status   = SCI_SUCCESS;
-       sci_req->scu_status   = 0;
-       sci_req->post_context = 0xFFFFFFFF;
-
-       sci_req->is_task_management_request = false;
-
-       if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
-               sci_req->was_tag_assigned_by_user = false;
-               sci_req->task_context_buffer = NULL;
-       } else {
-               sci_req->was_tag_assigned_by_user = true;
-
-               sci_req->task_context_buffer =
-                       scic_sds_controller_get_task_context_buffer(scic, io_tag);
-       }
-}
-
-enum sci_status
-scic_io_request_construct(struct scic_sds_controller *scic,
-                         struct scic_sds_remote_device *sci_dev,
-                         u16 io_tag, struct scic_sds_request *sci_req)
-{
-       struct domain_device *dev = sci_dev_to_domain(sci_dev);
-       enum sci_status status = SCI_SUCCESS;
-
-       /* Build the common part of the request */
-       scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
-
-       if (sci_dev->rnc.remote_node_index ==
-                       SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX)
-               return SCI_FAILURE_INVALID_REMOTE_DEVICE;
-
-       if (dev->dev_type == SAS_END_DEV)
-               scic_sds_ssp_io_request_assign_buffers(sci_req);
-       else if ((dev->dev_type == SATA_DEV) ||
-                (dev->tproto & SAS_PROTOCOL_STP)) {
-               scic_sds_stp_request_assign_buffers(sci_req);
-               memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd));
-       } else if (dev_is_expander(dev)) {
-               scic_sds_smp_request_assign_buffers(sci_req);
-               memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd));
-       } else
-               status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
-
-       if (status == SCI_SUCCESS) {
-               memset(sci_req->task_context_buffer, 0,
-                      offsetof(struct scu_task_context, sgl_pair_ab));
-       }
-
-       return status;
-}
-
-enum sci_status scic_task_request_construct(struct scic_sds_controller *scic,
-                                           struct scic_sds_remote_device *sci_dev,
-                                           u16 io_tag, struct scic_sds_request *sci_req)
-{
-       struct domain_device *dev = sci_dev_to_domain(sci_dev);
-       enum sci_status status = SCI_SUCCESS;
-
-       /* Build the common part of the request */
-       scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
-
-       if (dev->dev_type == SAS_END_DEV) {
-               scic_sds_ssp_task_request_assign_buffers(sci_req);
-
-               sci_req->has_started_substate_machine = true;
-
-               /* Construct the started sub-state machine. */
-               sci_base_state_machine_construct(
-                       &sci_req->started_substate_machine,
-                       sci_req,
-                       scic_sds_io_request_started_task_mgmt_substate_table,
-                       SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
-                       );
-       } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))
-               scic_sds_stp_request_assign_buffers(sci_req);
-       else
-               status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
-
-       if (status == SCI_SUCCESS) {
-               sci_req->is_task_management_request = true;
-               memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context));
-       }
-
-       return status;
-}
diff --git a/drivers/scsi/isci/core/scic_sds_request.h b/drivers/scsi/isci/core/scic_sds_request.h
deleted file mode 100644 (file)
index a8d74a1..0000000
+++ /dev/null
@@ -1,491 +0,0 @@
-/*
- * 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_IO_REQUEST_H_
-#define _SCIC_SDS_IO_REQUEST_H_
-
-#include "isci.h"
-#include "scic_io_request.h"
-#include "state_machine.h"
-#include "scu_task_context.h"
-#include "scic_sds_stp_request.h"
-#include "sas.h"
-
-struct scic_sds_controller;
-struct scic_sds_remote_device;
-struct scic_sds_io_request_state_handler;
-
-/**
- * enum _scic_sds_io_request_started_task_mgmt_substates - This enumeration
- *    depicts all of the substates for a task management request to be
- *    performed in the STARTED super-state.
- *
- *
- */
-enum scic_sds_raw_request_started_task_mgmt_substates {
-       /**
-        * The AWAIT_TC_COMPLETION sub-state indicates that the started raw
-        * task management request is waiting for the transmission of the
-        * initial frame (i.e. command, task, etc.).
-        */
-       SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION,
-
-       /**
-        * This sub-state indicates that the started task management request
-        * is waiting for the reception of an unsolicited frame
-        * (i.e. response IU).
-        */
-       SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE,
-};
-
-
-/**
- * enum _scic_sds_smp_request_started_substates - This enumeration depicts all
- *    of the substates for a SMP request to be performed in the STARTED
- *    super-state.
- *
- *
- */
-enum scic_sds_smp_request_started_substates {
-       /**
-        * This sub-state indicates that the started task management request
-        * is waiting for the reception of an unsolicited frame
-        * (i.e. response IU).
-        */
-       SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE,
-
-       /**
-        * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is
-        * waiting for the transmission of the initial frame (i.e. command, task, etc.).
-        */
-       SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION,
-};
-
-struct scic_sds_request {
-       /**
-        * This field contains the information for the base request state machine.
-        */
-       struct sci_base_state_machine state_machine;
-
-       /**
-        * This field simply points to the controller to which this IO request
-        * is associated.
-        */
-       struct scic_sds_controller *owning_controller;
-
-       /**
-        * This field simply points to the remote device to which this IO request
-        * is associated.
-        */
-       struct scic_sds_remote_device *target_device;
-
-       /**
-        * This field is utilized to determine if the SCI user is managing
-        * the IO tag for this request or if the core is managing it.
-        */
-       bool was_tag_assigned_by_user;
-
-       /**
-        * This field indicates the IO tag for this request.  The IO tag is
-        * comprised of the task_index and a sequence count. The sequence count
-        * is utilized to help identify tasks from one life to another.
-        */
-       u16 io_tag;
-
-       /**
-        * This field specifies the protocol being utilized for this
-        * IO request.
-        */
-       SCIC_TRANSPORT_PROTOCOL protocol;
-
-       /**
-        * This field indicates the completion status taken from the SCUs
-        * completion code.  It indicates the completion result for the SCU hardware.
-        */
-       u32 scu_status;
-
-       /**
-        * This field indicates the completion status returned to the SCI user.  It
-        * indicates the users view of the io request completion.
-        */
-       u32 sci_status;
-
-       /**
-        * This field contains the value to be utilized when posting (e.g. Post_TC,
-        * Post_TC_Abort) this request to the silicon.
-        */
-       u32 post_context;
-
-       struct scu_task_context *task_context_buffer;
-       struct scu_task_context tc ____cacheline_aligned;
-
-       /* could be larger with sg chaining */
-       #define SCU_SGL_SIZE ((SCU_IO_REQUEST_SGE_COUNT + 1) / 2)
-       struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32)));
-
-       /**
-        * This field indicates if this request is a task management request or
-        * normal IO request.
-        */
-       bool is_task_management_request;
-
-       /**
-        * This field indicates that this request contains an initialized started
-        * substate machine.
-        */
-       bool has_started_substate_machine;
-
-       /**
-        * This field is a pointer to the stored rx frame data.  It is used in STP
-        * internal requests and SMP response frames.  If this field is non-NULL the
-        * saved frame must be released on IO request completion.
-        *
-        * @todo In the future do we want to keep a list of RX frame buffers?
-        */
-       u32 saved_rx_frame_index;
-
-       /**
-        * This field specifies the data necessary to manage the sub-state
-        * machine executed while in the SCI_BASE_REQUEST_STATE_STARTED state.
-        */
-       struct sci_base_state_machine started_substate_machine;
-
-       /**
-        * This field specifies the current state handlers in place for this
-        * IO Request object.  This field is updated each time the request
-        * changes state.
-        */
-       const struct scic_sds_io_request_state_handler *state_handlers;
-
-       /**
-        * This field in the recorded device sequence for the io request.  This is
-        * recorded during the build operation and is compared in the start
-        * operation.  If the sequence is different then there was a change of
-        * devices from the build to start operations.
-        */
-       u8 device_sequence;
-
-       union {
-               struct {
-                       union {
-                               struct ssp_cmd_iu cmd;
-                               struct ssp_task_iu tmf;
-                       };
-                       union {
-                               struct ssp_response_iu rsp;
-                               u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
-                       };
-               } ssp;
-
-               struct {
-                       struct smp_req cmd;
-                       struct smp_resp rsp;
-               } smp;
-
-               struct {
-                       struct scic_sds_stp_request req;
-                       struct host_to_dev_fis cmd;
-                       struct dev_to_host_fis rsp;
-               } stp;
-       };
-
-};
-
-static inline struct scic_sds_request *to_sci_req(struct scic_sds_stp_request *stp_req)
-{
-       struct scic_sds_request *sci_req;
-
-       sci_req = container_of(stp_req, typeof(*sci_req), stp.req);
-       return sci_req;
-}
-
-/**
- * enum sci_base_request_states - This enumeration depicts all the states for
- *    the common request state machine.
- *
- *
- */
-enum sci_base_request_states {
-       /**
-        * Simply the initial state for the base request state machine.
-        */
-       SCI_BASE_REQUEST_STATE_INITIAL,
-
-       /**
-        * This state indicates that the request has been constructed. This state
-        * is entered from the INITIAL state.
-        */
-       SCI_BASE_REQUEST_STATE_CONSTRUCTED,
-
-       /**
-        * This state indicates that the request has been started. This state is
-        * entered from the CONSTRUCTED state.
-        */
-       SCI_BASE_REQUEST_STATE_STARTED,
-
-       /**
-        * This state indicates that the request has completed.
-        * This state is entered from the STARTED state. This state is entered from
-        * the ABORTING state.
-        */
-       SCI_BASE_REQUEST_STATE_COMPLETED,
-
-       /**
-        * This state indicates that the request is in the process of being
-        * terminated/aborted.
-        * This state is entered from the CONSTRUCTED state.
-        * This state is entered from the STARTED state.
-        */
-       SCI_BASE_REQUEST_STATE_ABORTING,
-
-       /**
-        * Simply the final state for the base request state machine.
-        */
-       SCI_BASE_REQUEST_STATE_FINAL,
-};
-
-typedef enum sci_status (*scic_sds_io_request_handler_t)
-                               (struct scic_sds_request *request);
-typedef enum sci_status (*scic_sds_io_request_frame_handler_t)
-                               (struct scic_sds_request *req, u32 frame);
-typedef enum sci_status (*scic_sds_io_request_event_handler_t)
-                               (struct scic_sds_request *req, u32 event);
-typedef enum sci_status (*scic_sds_io_request_task_completion_handler_t)
-                               (struct scic_sds_request *req, u32 completion_code);
-
-/**
- * struct scic_sds_io_request_state_handler - This is the SDS core definition
- *    of the state handlers.
- *
- *
- */
-struct scic_sds_io_request_state_handler {
-       /**
-        * The start_handler specifies the method invoked when a user attempts to
-        * start a request.
-        */
-       scic_sds_io_request_handler_t start_handler;
-
-       /**
-        * The abort_handler specifies the method invoked when a user attempts to
-        * abort a request.
-        */
-       scic_sds_io_request_handler_t abort_handler;
-
-       /**
-        * The complete_handler specifies the method invoked when a user attempts to
-        * complete a request.
-        */
-       scic_sds_io_request_handler_t complete_handler;
-
-       scic_sds_io_request_task_completion_handler_t tc_completion_handler;
-       scic_sds_io_request_event_handler_t event_handler;
-       scic_sds_io_request_frame_handler_t frame_handler;
-
-};
-
-extern const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[];
-
-/**
- * scic_sds_request_get_controller() -
- *
- * This macro will return the controller for this io request object
- */
-#define scic_sds_request_get_controller(sci_req) \
-       ((sci_req)->owning_controller)
-
-/**
- * scic_sds_request_get_device() -
- *
- * This macro will return the device for this io request object
- */
-#define scic_sds_request_get_device(sci_req) \
-       ((sci_req)->target_device)
-
-/**
- * scic_sds_request_get_port() -
- *
- * This macro will return the port for this io request object
- */
-#define scic_sds_request_get_port(sci_req)     \
-       scic_sds_remote_device_get_port(scic_sds_request_get_device(sci_req))
-
-/**
- * scic_sds_request_get_post_context() -
- *
- * This macro returns the constructed post context result for the io request.
- */
-#define scic_sds_request_get_post_context(sci_req)     \
-       ((sci_req)->post_context)
-
-/**
- * scic_sds_request_get_task_context() -
- *
- * This is a helper macro to return the os handle for this request object.
- */
-#define scic_sds_request_get_task_context(request) \
-       ((request)->task_context_buffer)
-
-/**
- * scic_sds_request_set_status() -
- *
- * This macro will set the scu hardware status and sci request completion
- * status for an io request.
- */
-#define scic_sds_request_set_status(request, scu_status_code, sci_status_code) \
-       { \
-               (request)->scu_status = (scu_status_code); \
-               (request)->sci_status = (sci_status_code); \
-       }
-
-#define scic_sds_request_complete(a_request) \
-       ((a_request)->state_handlers->complete_handler(a_request))
-
-
-extern enum sci_status
-scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code);
-
-/**
- * SCU_SGL_ZERO() -
- *
- * This macro zeros the hardware SGL element data
- */
-#define SCU_SGL_ZERO(scu_sge) \
-       { \
-               (scu_sge).length = 0; \
-               (scu_sge).address_lower = 0; \
-               (scu_sge).address_upper = 0; \
-               (scu_sge).address_modifier = 0; \
-       }
-
-/**
- * SCU_SGL_COPY() -
- *
- * This macro copys the SGL Element data from the host os to the hardware SGL
- * elment data
- */
-#define SCU_SGL_COPY(scu_sge, os_sge) \
-       { \
-               (scu_sge).length = sg_dma_len(sg); \
-               (scu_sge).address_upper = \
-                       upper_32_bits(sg_dma_address(sg)); \
-               (scu_sge).address_lower = \
-                       lower_32_bits(sg_dma_address(sg)); \
-               (scu_sge).address_modifier = 0; \
-       }
-
-/**
- * scic_sds_request_get_user_request() -
- *
- * This is a helper macro to return the os handle for this request object.
- */
-#define scic_sds_request_get_user_request(request) \
-       ((request)->user_request)
-
-/*
- * *****************************************************************************
- * * CORE REQUEST PROTOTYPES
- * ***************************************************************************** */
-
-void scic_sds_request_build_sgl(
-       struct scic_sds_request *sci_req);
-
-
-
-void scic_sds_stp_request_assign_buffers(
-       struct scic_sds_request *sci_req);
-
-void scic_sds_smp_request_assign_buffers(
-       struct scic_sds_request *sci_req);
-
-/* --------------------------------------------------------------------------- */
-
-enum sci_status scic_sds_request_start(
-       struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_io_request_terminate(
-       struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_io_request_complete(
-       struct scic_sds_request *sci_req);
-
-void scic_sds_io_request_copy_response(
-       struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_io_request_event_handler(
-       struct scic_sds_request *sci_req,
-       u32 event_code);
-
-enum sci_status scic_sds_io_request_frame_handler(
-       struct scic_sds_request *sci_req,
-       u32 frame_index);
-
-
-enum sci_status scic_sds_task_request_terminate(
-       struct scic_sds_request *sci_req);
-
-/*
- * *****************************************************************************
- * * STARTED STATE HANDLERS
- * ***************************************************************************** */
-
-enum sci_status scic_sds_request_started_state_abort_handler(
-       struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_request_started_state_tc_completion_handler(
-       struct scic_sds_request *sci_req,
-       u32 completion_code);
-
-#endif /* _SCIC_SDS_IO_REQUEST_H_ */
diff --git a/drivers/scsi/isci/core/scic_sds_smp_request.h b/drivers/scsi/isci/core/scic_sds_smp_request.h
deleted file mode 100644 (file)
index f432b7a..0000000
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * 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_SMP_REQUEST_T_
-#define _SCIC_SDS_SMP_REQUEST_T_
-
-#include "scic_sds_request.h"
-
-
-u32 scic_sds_smp_request_get_object_size(void);
-
-
-void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req);
-
-#endif /* _SCIC_SDS_SMP_REQUEST_T_ */
-
diff --git a/drivers/scsi/isci/core/scic_sds_stp_packet_request.h b/drivers/scsi/isci/core/scic_sds_stp_packet_request.h
deleted file mode 100644 (file)
index e94d689..0000000
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * 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_STP_PACKET_REQUEST_H_
-#define _SCIC_SDS_STP_PACKET_REQUEST_H_
-
-#include "scic_sds_stp_request.h"
-
-/**
- * This file contains the structures and constants for PACKET protocol requests.
- *
- *
- */
-
-
-/**
- *
- *
- * This is the enumeration of the SATA PIO DATA IN started substate machine.
- */
-enum _scic_sds_stp_packet_request_started_substates {
-       /**
-        * While in this state the IO request object is waiting for the TC completion
-        * notification for the H2D Register FIS
-        */
-       SCIC_SDS_STP_PACKET_REQUEST_STARTED_PACKET_PHASE_AWAIT_TC_COMPLETION_SUBSTATE,
-
-       /**
-        * While in this state the IO request object is waiting for either a PIO Setup.
-        */
-       SCIC_SDS_STP_PACKET_REQUEST_STARTED_PACKET_PHASE_AWAIT_PIO_SETUP_SUBSTATE,
-
-       /**
-        * While in this state the IO request object is waiting for TC completion for
-        * the Packet DMA DATA fis or Raw Frame.
-        */
-       SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMMAND_PHASE_AWAIT_TC_COMPLETION_SUBSTATE,
-
-       /**
-        * The non-data IO transit to this state in this state after receiving TC
-        * completion. While in this state IO request object is waiting for D2H status
-        * frame as UF.
-        */
-       SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMMAND_PHASE_AWAIT_D2H_FIS_SUBSTATE,
-
-       /**
-        * The IO transit to this state in this state if the previous TC completion status
-        * is not success and the atapi device is suspended due to target device failed the IO.
-        * While in this state IO request object is waiting for device coming out of the
-        * suspension state then complete the IO.
-        */
-       SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMPLETION_DELAY_SUBSTATE,
-};
-
-#define scic_sds_stp_packet_request_construct(request) SCI_FAILURE
-#define scu_stp_packet_request_command_phase_construct_task_context(reqeust, tc)
-#define scu_stp_packet_request_command_phase_reconstruct_raw_frame_task_context(reqeust, tc)
-#define scic_sds_stp_packet_request_process_status_fis(reqeust, fis) SCI_FAILURE
-#define scic_sds_stp_packet_internal_request_sense_build_sgl(request)
-
-#endif /* _SCIC_SDS_STP_PACKET_REQUEST_H_ */
-
diff --git a/drivers/scsi/isci/core/scic_sds_stp_pio_request.h b/drivers/scsi/isci/core/scic_sds_stp_pio_request.h
deleted file mode 100644 (file)
index e015a11..0000000
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * 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_SATA_PIO_REQUEST_H_
-#define _SCIC_SDS_SATA_PIO_REQUEST_H_
-
-#include "scic_sds_request.h"
-#include "scu_task_context.h"
-
-/**
- * This file contains the structures and constants for SATA PIO requests.
- *
- *
- */
-
-
-/**
- *
- *
- * This is the enumeration of the SATA PIO DATA IN started substate machine.
- */
-enum _scic_sds_stp_request_started_pio_substates {
-       /**
-        * While in this state the IO request object is waiting for the TC completion
-        * notification for the H2D Register FIS
-        */
-       SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
-
-       /**
-        * While in this state the IO request object is waiting for either a PIO Setup
-        * FIS or a D2H register FIS.  The type of frame received is based on the
-        * result of the prior frame and line conditions.
-        */
-       SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
-
-       /**
-        * While in this state the IO request object is waiting for a DATA frame from
-        * the device.
-        */
-       SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
-
-       /**
-        * While in this state the IO request object is waiting to transmit the next data
-        * frame to the device.
-        */
-       SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
-};
-
-struct scic_sds_stp_request;
-
-
-#endif   /* _SCIC_SDS_SATA_PIO_REQUEST_H_ */
diff --git a/drivers/scsi/isci/core/scic_task_request.h b/drivers/scsi/isci/core/scic_task_request.h
deleted file mode 100644 (file)
index 790cee9..0000000
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * 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_TASK_REQUEST_H_
-#define _SCIC_TASK_REQUEST_H_
-
-#include "isci.h"
-
-struct scic_sds_request;
-struct scic_sds_remote_device;
-struct scic_sds_controller;
-
-
-enum sci_status scic_task_request_construct(
-       struct scic_sds_controller *scic_controller,
-       struct scic_sds_remote_device *scic_remote_device,
-       u16 io_tag, struct scic_sds_request *sci_req);
-
-/**
- * scic_task_request_construct_ssp() - This method is called by the SCI user to
- *    construct all SCI Core SSP task management requests.  Memory
- *    initialization and functionality common to all task request types is
- *    performed in this method.
- * @scic_task_request: This parameter specifies the handle to the core task
- *    request object for which to construct a SATA specific task management
- *    request.
- *
- * Indicate if the controller successfully built the task request. SCI_SUCCESS
- * This value is returned if the task request was successfully built.
- */
-enum sci_status scic_task_request_construct_ssp(
-       struct scic_sds_request *scic_task_request);
-
-/**
- * scic_task_request_construct_sata() - This method is called by the SCI user
- *    to construct all SCI Core SATA task management requests.  Memory
- *    initialization and functionality common to all task request types is
- *    performed in this method.
- * @scic_task_request_handle: This parameter specifies the handle to the core
- *    task request object for which to construct a SATA specific task
- *    management request.
- *
- * Indicate if the controller successfully built the task request. SCI_SUCCESS
- * This value is returned if the task request was successfully built.
- */
-enum sci_status scic_task_request_construct_sata(
-       struct scic_sds_request *scic_task_request_handle);
-
-
-
-#endif  /* _SCIC_TASK_REQUEST_H_ */
-
index 71a0466..e1930da 100644 (file)
@@ -61,9 +61,7 @@
 #include "probe_roms.h"
 #include "remote_device.h"
 #include "request.h"
-#include "scic_io_request.h"
 #include "scic_sds_port_configuration_agent.h"
-#include "sci_util.h"
 #include "scu_completion_codes.h"
 #include "scu_event_codes.h"
 #include "registers.h"
index d288897..69826ea 100644 (file)
@@ -521,6 +521,25 @@ enum sci_task_status {
 
 };
 
+/**
+ * sci_swab32_cpy - convert between scsi and scu-hardware byte format
+ * @dest: receive the 4-byte endian swapped version of src
+ * @src: word aligned source buffer
+ *
+ * scu hardware handles SSP/SMP control, response, and unidentified
+ * frames in "big endian dword" order.  Regardless of host endian this
+ * is always a swab32()-per-dword conversion of the standard definition,
+ * i.e. single byte fields swapped and multi-byte fields in little-
+ * endian
+ */
+static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
+{
+       u32 *dest = _dest, *src = _src;
+
+       while (--word_cnt >= 0)
+               dest[word_cnt] = swab32(src[word_cnt]);
+}
+
 extern unsigned char no_outbound_task_to;
 extern u16 ssp_max_occ_to;
 extern u16 stp_max_occ_to;
index f44fa20..d4bf6d2 100644 (file)
@@ -55,7 +55,6 @@
 
 #include <linux/workqueue.h>
 #include "isci.h"
-#include "scic_io_request.h"
 #include "scic_phy.h"
 #include "scic_sds_phy.h"
 #include "scic_port.h"
index 00334b9..2339010 100644 (file)
 #include "port.h"
 #include "remote_device.h"
 #include "request.h"
-#include "scic_io_request.h"
 #include "scic_phy.h"
 #include "scic_port.h"
 #include "scic_sds_phy.h"
 #include "scic_sds_port.h"
 #include "remote_node_context.h"
-#include "scic_sds_request.h"
-#include "sci_util.h"
 #include "scu_event_codes.h"
 #include "task.h"
 
index 5891f3d..35231e7 100644 (file)
@@ -58,7 +58,6 @@
 #include "scic_sds_port.h"
 #include "remote_device.h"
 #include "remote_node_context.h"
-#include "sci_util.h"
 #include "scu_event_codes.h"
 #include "scu_task_context.h"
 
index 80f44c2..6b9465a 100644 (file)
@@ -59,7 +59,6 @@
  *
  *
  */
-#include "sci_util.h"
 #include "remote_node_table.h"
 #include "remote_node_context.h"
 
index 4961ee3..857ad06 100644 (file)
  */
 
 #include "isci.h"
-#include "scic_io_request.h"
-#include "scic_task_request.h"
 #include "scic_port.h"
 #include "task.h"
 #include "request.h"
 #include "sata.h"
 #include "scu_completion_codes.h"
-#include "scic_sds_request.h"
 #include "sas.h"
 
-static enum sci_status isci_request_ssp_request_construct(
-       struct isci_request *request)
+/**
+ * This method returns the sgl element pair for the specificed sgl_pair index.
+ * @sci_req: This parameter specifies the IO request for which to retrieve
+ *    the Scatter-Gather List element pair.
+ * @sgl_pair_index: This parameter specifies the index into the SGL element
+ *    pair to be retrieved.
+ *
+ * This method returns a pointer to an struct scu_sgl_element_pair.
+ */
+static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair(
+       struct scic_sds_request *sci_req,
+       u32 sgl_pair_index
+       ) {
+       struct scu_task_context *task_context;
+
+       task_context = (struct scu_task_context *)sci_req->task_context_buffer;
+
+       if (sgl_pair_index == 0) {
+               return &task_context->sgl_pair_ab;
+       } else if (sgl_pair_index == 1) {
+               return &task_context->sgl_pair_cd;
+       }
+
+       return &sci_req->sg_table[sgl_pair_index - 2];
+}
+
+/**
+ * This function will build the SGL list for an IO request.
+ * @sci_req: This parameter specifies the IO request for which to build
+ *    the Scatter-Gather List.
+ *
+ */
+void scic_sds_request_build_sgl(struct scic_sds_request *sds_request)
 {
-       enum sci_status status;
+       struct isci_request *isci_request = sci_req_to_ireq(sds_request);
+       struct isci_host *isci_host = isci_request->isci_host;
+       struct sas_task *task = isci_request_access_task(isci_request);
+       struct scatterlist *sg = NULL;
+       dma_addr_t dma_addr;
+       u32 sg_idx = 0;
+       struct scu_sgl_element_pair *scu_sg   = NULL;
+       struct scu_sgl_element_pair *prev_sg  = NULL;
+
+       if (task->num_scatter > 0) {
+               sg = task->scatter;
+
+               while (sg) {
+                       scu_sg = scic_sds_request_get_sgl_element_pair(
+                                       sds_request,
+                                       sg_idx);
+
+                       SCU_SGL_COPY(scu_sg->A, sg);
+
+                       sg = sg_next(sg);
+
+                       if (sg) {
+                               SCU_SGL_COPY(scu_sg->B, sg);
+                               sg = sg_next(sg);
+                       } else
+                               SCU_SGL_ZERO(scu_sg->B);
+
+                       if (prev_sg) {
+                               dma_addr =
+                                       scic_io_request_get_dma_addr(
+                                                       sds_request,
+                                                       scu_sg);
+
+                               prev_sg->next_pair_upper =
+                                       upper_32_bits(dma_addr);
+                               prev_sg->next_pair_lower =
+                                       lower_32_bits(dma_addr);
+                       }
+
+                       prev_sg = scu_sg;
+                       sg_idx++;
+               }
+       } else {        /* handle when no sg */
+               scu_sg = scic_sds_request_get_sgl_element_pair(sds_request,
+                                                              sg_idx);
 
-       dev_dbg(&request->isci_host->pdev->dev,
-               "%s: request = %p\n",
-               __func__,
-               request);
-       status = scic_io_request_construct_basic_ssp(&request->sci);
-       return status;
+               dma_addr = dma_map_single(&isci_host->pdev->dev,
+                                         task->scatter,
+                                         task->total_xfer_len,
+                                         task->data_dir);
+
+               isci_request->zero_scatter_daddr = dma_addr;
+
+               scu_sg->A.length = task->total_xfer_len;
+               scu_sg->A.address_upper = upper_32_bits(dma_addr);
+               scu_sg->A.address_lower = lower_32_bits(dma_addr);
+       }
+
+       if (scu_sg) {
+               scu_sg->next_pair_upper = 0;
+               scu_sg->next_pair_lower = 0;
+       }
 }
 
-static enum sci_status isci_request_stp_request_construct(
-       struct isci_request *request)
+static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req)
 {
-       struct sas_task *task = isci_request_access_task(request);
-       enum sci_status status;
-       struct host_to_dev_fis *register_fis;
+       if (sci_req->was_tag_assigned_by_user == false)
+               sci_req->task_context_buffer = &sci_req->tc;
+}
 
-       dev_dbg(&request->isci_host->pdev->dev,
-               "%s: request = %p\n",
-               __func__,
-               request);
+static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req)
+{
+       struct ssp_cmd_iu *cmd_iu;
+       struct isci_request *ireq = sci_req_to_ireq(sci_req);
+       struct sas_task *task = isci_request_access_task(ireq);
 
-       /* Get the host_to_dev_fis from the core and copy
-        * the fis from the task into it.
-        */
-       register_fis = isci_sata_task_to_fis_copy(task);
+       cmd_iu = &sci_req->ssp.cmd;
 
-       status = scic_io_request_construct_basic_sata(&request->sci);
+       memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8);
+       cmd_iu->add_cdb_len = 0;
+       cmd_iu->_r_a = 0;
+       cmd_iu->_r_b = 0;
+       cmd_iu->en_fburst = 0; /* unsupported */
+       cmd_iu->task_prio = task->ssp_task.task_prio;
+       cmd_iu->task_attr = task->ssp_task.task_attr;
+       cmd_iu->_r_c = 0;
 
-       /* Set the ncq tag in the fis, from the queue
-        * command in the task.
-        */
-       if (isci_sata_is_task_ncq(task)) {
+       sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb,
+                      sizeof(task->ssp_task.cdb) / sizeof(u32));
+}
 
-               isci_sata_set_ncq_tag(
-                       register_fis,
-                       task
-                       );
+static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req)
+{
+       struct ssp_task_iu *task_iu;
+       struct isci_request *ireq = sci_req_to_ireq(sci_req);
+       struct sas_task *task = isci_request_access_task(ireq);
+       struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
+
+       task_iu = &sci_req->ssp.tmf;
+
+       memset(task_iu, 0, sizeof(struct ssp_task_iu));
+
+       memcpy(task_iu->LUN, task->ssp_task.LUN, 8);
+
+       task_iu->task_func = isci_tmf->tmf_code;
+       task_iu->task_tag =
+               (ireq->ttype == tmf_task) ?
+               isci_tmf->io_tag :
+               SCI_CONTROLLER_INVALID_IO_TAG;
+}
+
+/**
+ * This method is will fill in the SCU Task Context for any type of SSP request.
+ * @sci_req:
+ * @task_context:
+ *
+ */
+static void scu_ssp_reqeust_construct_task_context(
+       struct scic_sds_request *sds_request,
+       struct scu_task_context *task_context)
+{
+       dma_addr_t dma_addr;
+       struct scic_sds_controller *controller;
+       struct scic_sds_remote_device *target_device;
+       struct scic_sds_port *target_port;
+
+       controller = scic_sds_request_get_controller(sds_request);
+       target_device = scic_sds_request_get_device(sds_request);
+       target_port = scic_sds_request_get_port(sds_request);
+
+       /* Fill in the TC with the its required data */
+       task_context->abort = 0;
+       task_context->priority = 0;
+       task_context->initiator_request = 1;
+       task_context->connection_rate = target_device->connection_rate;
+       task_context->protocol_engine_index =
+               scic_sds_controller_get_protocol_engine_group(controller);
+       task_context->logical_port_index =
+               scic_sds_port_get_index(target_port);
+       task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
+       task_context->valid = SCU_TASK_CONTEXT_VALID;
+       task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+
+       task_context->remote_node_index =
+               scic_sds_remote_device_get_index(sds_request->target_device);
+       task_context->command_code = 0;
+
+       task_context->link_layer_control = 0;
+       task_context->do_not_dma_ssp_good_response = 1;
+       task_context->strict_ordering = 0;
+       task_context->control_frame = 0;
+       task_context->timeout_enable = 0;
+       task_context->block_guard_enable = 0;
+
+       task_context->address_modifier = 0;
+
+       /* task_context->type.ssp.tag = sci_req->io_tag; */
+       task_context->task_phase = 0x01;
+
+       if (sds_request->was_tag_assigned_by_user) {
+               /*
+                * Build the task context now since we have already read
+                * the data
+                */
+               sds_request->post_context =
+                       (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+                        (scic_sds_controller_get_protocol_engine_group(
+                                                       controller) <<
+                         SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+                        (scic_sds_port_get_index(target_port) <<
+                         SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) |
+                        scic_sds_io_tag_get_index(sds_request->io_tag));
+       } else {
+               /*
+                * Build the task context now since we have already read
+                * the data
+                *
+                * I/O tag index is not assigned because we have to wait
+                * until we get a TCi
+                */
+               sds_request->post_context =
+                       (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+                        (scic_sds_controller_get_protocol_engine_group(
+                                                       owning_controller) <<
+                         SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) |
+                        (scic_sds_port_get_index(target_port) <<
+                         SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT));
        }
 
-       return status;
+       /*
+        * Copy the physical address for the command buffer to the
+        * SCU Task Context
+        */
+       dma_addr = scic_io_request_get_dma_addr(sds_request,
+                                               &sds_request->ssp.cmd);
+
+       task_context->command_iu_upper = upper_32_bits(dma_addr);
+       task_context->command_iu_lower = lower_32_bits(dma_addr);
+
+       /*
+        * Copy the physical address for the response buffer to the
+        * SCU Task Context
+        */
+       dma_addr = scic_io_request_get_dma_addr(sds_request,
+                                               &sds_request->ssp.rsp);
+
+       task_context->response_iu_upper = upper_32_bits(dma_addr);
+       task_context->response_iu_lower = lower_32_bits(dma_addr);
 }
 
-/*
- * isci_smp_request_build() - This function builds the smp request.
- * @ireq: This parameter points to the isci_request allocated in the
- *    request construct function.
+/**
+ * This method is will fill in the SCU Task Context for a SSP IO request.
+ * @sci_req:
  *
- * SCI_SUCCESS on successfull completion, or specific failure code.
  */
-static enum sci_status isci_smp_request_build(struct isci_request *ireq)
+static void scu_ssp_io_request_construct_task_context(
+       struct scic_sds_request *sci_req,
+       enum dma_data_direction dir,
+       u32 len)
 {
-       enum sci_status status = SCI_FAILURE;
-       struct sas_task *task = isci_request_access_task(ireq);
-       struct scic_sds_request *sci_req = &ireq->sci;
+       struct scu_task_context *task_context;
 
-       dev_dbg(&ireq->isci_host->pdev->dev,
-               "%s: request = %p\n", __func__, ireq);
+       task_context = scic_sds_request_get_task_context(sci_req);
 
-       dev_dbg(&ireq->isci_host->pdev->dev,
-               "%s: smp_req len = %d\n",
-               __func__,
-               task->smp_task.smp_req.length);
+       scu_ssp_reqeust_construct_task_context(sci_req, task_context);
 
-       /* copy the smp_command to the address; */
-       sg_copy_to_buffer(&task->smp_task.smp_req, 1,
-                         &sci_req->smp.cmd,
-                         sizeof(struct smp_req));
+       task_context->ssp_command_iu_length =
+               sizeof(struct ssp_cmd_iu) / sizeof(u32);
+       task_context->type.ssp.frame_type = SSP_COMMAND;
 
-       status = scic_io_request_construct_smp(sci_req);
-       if (status != SCI_SUCCESS)
-               dev_warn(&ireq->isci_host->pdev->dev,
-                        "%s: failed with status = %d\n",
-                        __func__,
-                        status);
+       switch (dir) {
+       case DMA_FROM_DEVICE:
+       case DMA_NONE:
+       default:
+               task_context->task_type = SCU_TASK_TYPE_IOREAD;
+               break;
+       case DMA_TO_DEVICE:
+               task_context->task_type = SCU_TASK_TYPE_IOWRITE;
+               break;
+       }
 
-       return status;
+       task_context->transfer_length_bytes = len;
+
+       if (task_context->transfer_length_bytes > 0)
+               scic_sds_request_build_sgl(sci_req);
+}
+
+static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req)
+{
+       if (sci_req->was_tag_assigned_by_user == false)
+               sci_req->task_context_buffer = &sci_req->tc;
 }
 
 /**
- * isci_io_request_build() - This function builds the io request object.
- * @isci_host: This parameter specifies the ISCI host object
- * @request: This parameter points to the isci_request object allocated in the
- *    request construct function.
- * @sci_device: This parameter is the handle for the sci core's remote device
- *    object that is the destination for this request.
+ * This method will fill in the SCU Task Context for a SSP Task request.  The
+ *    following important settings are utilized: -# priority ==
+ *    SCU_TASK_PRIORITY_HIGH.  This ensures that the task request is issued
+ *    ahead of other task destined for the same Remote Node. -# task_type ==
+ *    SCU_TASK_TYPE_IOREAD.  This simply indicates that a normal request type
+ *    (i.e. non-raw frame) is being utilized to perform task management. -#
+ *    control_frame == 1.  This ensures that the proper endianess is set so
+ *    that the bytes are transmitted in the right order for a task frame.
+ * @sci_req: This parameter specifies the task request object being
+ *    constructed.
  *
- * SCI_SUCCESS on successfull completion, or specific failure code.
  */
-static enum sci_status isci_io_request_build(
-       struct isci_host *isci_host,
-       struct isci_request *request,
-       struct isci_remote_device *isci_device)
+static void scu_ssp_task_request_construct_task_context(
+       struct scic_sds_request *sci_req)
 {
-       enum sci_status status = SCI_SUCCESS;
-       struct sas_task *task = isci_request_access_task(request);
-       struct scic_sds_remote_device *sci_device = &isci_device->sci;
+       struct scu_task_context *task_context;
 
-       dev_dbg(&isci_host->pdev->dev,
-               "%s: isci_device = 0x%p; request = %p, "
-               "num_scatter = %d\n",
-               __func__,
-               isci_device,
-               request,
-               task->num_scatter);
+       task_context = scic_sds_request_get_task_context(sci_req);
 
-       /* map the sgl addresses, if present.
-        * libata does the mapping for sata devices
-        * before we get the request.
-        */
-       if (task->num_scatter &&
-           !sas_protocol_ata(task->task_proto) &&
-           !(SAS_PROTOCOL_SMP & task->task_proto)) {
+       scu_ssp_reqeust_construct_task_context(sci_req, task_context);
 
-               request->num_sg_entries = dma_map_sg(
-                       &isci_host->pdev->dev,
-                       task->scatter,
-                       task->num_scatter,
-                       task->data_dir
-                       );
+       task_context->control_frame                = 1;
+       task_context->priority                     = SCU_TASK_PRIORITY_HIGH;
+       task_context->task_type                    = SCU_TASK_TYPE_RAW_FRAME;
+       task_context->transfer_length_bytes        = 0;
+       task_context->type.ssp.frame_type          = SSP_TASK;
+       task_context->ssp_command_iu_length =
+               sizeof(struct ssp_task_iu) / sizeof(u32);
+}
 
-               if (request->num_sg_entries == 0)
-                       return SCI_FAILURE_INSUFFICIENT_RESOURCES;
-       }
 
-       /* build the common request object. For now,
-        * we will let the core allocate the IO tag.
-        */
-       status = scic_io_request_construct(&isci_host->sci, sci_device,
-                                          SCI_CONTROLLER_INVALID_IO_TAG,
-                                          &request->sci);
+/**
+ * This method constructs the SSP Command IU data for this ssp passthrough
+ *    comand request object.
+ * @sci_req: This parameter specifies the request object for which the SSP
+ *    command information unit is being built.
+ *
+ * enum sci_status, returns invalid parameter is cdb > 16
+ */
 
-       if (status != SCI_SUCCESS) {
-               dev_warn(&isci_host->pdev->dev,
-                        "%s: failed request construct\n",
-                        __func__);
-               return SCI_FAILURE;
+
+/**
+ * This method constructs the SATA request object.
+ * @sci_req:
+ * @sat_protocol:
+ * @transfer_length:
+ * @data_direction:
+ * @copy_rx_frame:
+ *
+ * enum sci_status
+ */
+static enum sci_status
+scic_io_request_construct_sata(struct scic_sds_request *sci_req,
+                              u32 len,
+                              enum dma_data_direction dir,
+                              bool copy)
+{
+       enum sci_status status = SCI_SUCCESS;
+       struct isci_request *ireq = sci_req_to_ireq(sci_req);
+       struct sas_task *task = isci_request_access_task(ireq);
+
+       /* check for management protocols */
+       if (ireq->ttype == tmf_task) {
+               struct isci_tmf *tmf = isci_request_access_tmf(ireq);
+
+               if (tmf->tmf_code == isci_tmf_sata_srst_high ||
+                   tmf->tmf_code == isci_tmf_sata_srst_low)
+                       return scic_sds_stp_soft_reset_request_construct(sci_req);
+               else {
+                       dev_err(scic_to_dev(sci_req->owning_controller),
+                               "%s: Request 0x%p received un-handled SAT "
+                               "management protocol 0x%x.\n",
+                               __func__, sci_req, tmf->tmf_code);
+
+                       return SCI_FAILURE;
+               }
        }
 
-       switch (task->task_proto) {
-       case SAS_PROTOCOL_SMP:
-               status = isci_smp_request_build(request);
-               break;
-       case SAS_PROTOCOL_SSP:
-               status = isci_request_ssp_request_construct(request);
-               break;
-       case SAS_PROTOCOL_SATA:
-       case SAS_PROTOCOL_STP:
-       case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
-               status = isci_request_stp_request_construct(request);
-               break;
-       default:
-               dev_warn(&isci_host->pdev->dev,
-                        "%s: unknown protocol\n", __func__);
+       if (!sas_protocol_ata(task->task_proto)) {
+               dev_err(scic_to_dev(sci_req->owning_controller),
+                       "%s: Non-ATA protocol in SATA path: 0x%x\n",
+                       __func__,
+                       task->task_proto);
                return SCI_FAILURE;
+
        }
 
+       /* non data */
+       if (task->data_dir == DMA_NONE)
+               return scic_sds_stp_non_data_request_construct(sci_req);
+
+       /* NCQ */
+       if (task->ata_task.use_ncq)
+               return scic_sds_stp_ncq_request_construct(sci_req, len, dir);
+
+       /* DMA */
+       if (task->ata_task.dma_xfer)
+               return scic_sds_stp_udma_request_construct(sci_req, len, dir);
+       else /* PIO */
+               return scic_sds_stp_pio_request_construct(sci_req, copy);
+
+       return status;
+}
+
+static enum sci_status scic_io_request_construct_basic_ssp(struct scic_sds_request *sci_req)
+{
+       struct isci_request *ireq = sci_req_to_ireq(sci_req);
+       struct sas_task *task = isci_request_access_task(ireq);
+
+       sci_req->protocol = SCIC_SSP_PROTOCOL;
+
+       scu_ssp_io_request_construct_task_context(sci_req,
+                                                 task->data_dir,
+                                                 task->total_xfer_len);
+
+       scic_sds_io_request_build_ssp_command_iu(sci_req);
+
+       sci_base_state_machine_change_state(
+                       &sci_req->state_machine,
+                       SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+
+       return SCI_SUCCESS;
+}
+
+enum sci_status scic_task_request_construct_ssp(
+       struct scic_sds_request *sci_req)
+{
+       /* Construct the SSP Task SCU Task Context */
+       scu_ssp_task_request_construct_task_context(sci_req);
+
+       /* Fill in the SSP Task IU */
+       scic_sds_task_request_build_ssp_task_iu(sci_req);
+
+       sci_base_state_machine_change_state(&sci_req->state_machine,
+               SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+
        return SCI_SUCCESS;
 }
 
 
+static enum sci_status scic_io_request_construct_basic_sata(struct scic_sds_request *sci_req)
+{
+       enum sci_status status;
+       struct scic_sds_stp_request *stp_req;
+       bool copy = false;
+       struct isci_request *isci_request = sci_req_to_ireq(sci_req);
+       struct sas_task *task = isci_request_access_task(isci_request);
+
+       stp_req = &sci_req->stp.req;
+       sci_req->protocol = SCIC_STP_PROTOCOL;
+
+       copy = (task->data_dir == DMA_NONE) ? false : true;
+
+       status = scic_io_request_construct_sata(sci_req,
+                                               task->total_xfer_len,
+                                               task->data_dir,
+                                               copy);
+
+       if (status == SCI_SUCCESS)
+               sci_base_state_machine_change_state(&sci_req->state_machine,
+                       SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+
+       return status;
+}
+
+
+enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req)
+{
+       enum sci_status status = SCI_SUCCESS;
+       struct isci_request *ireq = sci_req_to_ireq(sci_req);
+
+       /* check for management protocols */
+       if (ireq->ttype == tmf_task) {
+               struct isci_tmf *tmf = isci_request_access_tmf(ireq);
+
+               if (tmf->tmf_code == isci_tmf_sata_srst_high ||
+                   tmf->tmf_code == isci_tmf_sata_srst_low) {
+                       status = scic_sds_stp_soft_reset_request_construct(sci_req);
+               } else {
+                       dev_err(scic_to_dev(sci_req->owning_controller),
+                               "%s: Request 0x%p received un-handled SAT "
+                               "Protocol 0x%x.\n",
+                               __func__, sci_req, tmf->tmf_code);
+
+                       return SCI_FAILURE;
+               }
+       }
+
+       if (status == SCI_SUCCESS)
+               sci_base_state_machine_change_state(
+                               &sci_req->state_machine,
+                               SCI_BASE_REQUEST_STATE_CONSTRUCTED);
+
+       return status;
+}
+
 /**
- * isci_request_alloc_core() - This function gets the request object from the
- *    isci_host dma cache.
- * @isci_host: This parameter specifies the ISCI host object
- * @isci_request: This parameter will contain the pointer to the new
- *    isci_request object.
- * @isci_device: This parameter is the pointer to the isci remote device object
- *    that is the destination for this request.
- * @gfp_flags: This parameter specifies the os allocation flags.
- *
- * SCI_SUCCESS on successfull completion, or specific failure code.
+ * sci_req_tx_bytes - bytes transferred when reply underruns request
+ * @sci_req: request that was terminated early
  */
-static int isci_request_alloc_core(
-       struct isci_host *isci_host,
-       struct isci_request **isci_request,
-       struct isci_remote_device *isci_device,
-       gfp_t gfp_flags)
+#define SCU_TASK_CONTEXT_SRAM 0x200000
+static u32 sci_req_tx_bytes(struct scic_sds_request *sci_req)
 {
-       int ret = 0;
-       dma_addr_t handle;
-       struct isci_request *request;
+       struct scic_sds_controller *scic = sci_req->owning_controller;
+       u32 ret_val = 0;
 
+       if (readl(&scic->smu_registers->address_modifier) == 0) {
+               void __iomem *scu_reg_base = scic->scu_registers;
 
-       /* get pointer to dma memory. This actually points
-        * to both the isci_remote_device object and the
-        * sci object. The isci object is at the beginning
-        * of the memory allocated here.
-        */
-       request = dma_pool_alloc(isci_host->dma_pool, gfp_flags, &handle);
-       if (!request) {
-               dev_warn(&isci_host->pdev->dev,
-                        "%s: dma_pool_alloc returned NULL\n", __func__);
-               return -ENOMEM;
+               /* get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where
+                *   BAR1 is the scu_registers
+                *   0x20002C = 0x200000 + 0x2c
+                *            = start of task context SRAM + offset of (type.ssp.data_offset)
+                *   TCi is the io_tag of struct scic_sds_request
+                */
+               ret_val = readl(scu_reg_base +
+                               (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) +
+                               ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(sci_req->io_tag)));
        }
 
-       /* initialize the request object.       */
-       spin_lock_init(&request->state_lock);
-       request->request_daddr = handle;
-       request->isci_host = isci_host;
-       request->isci_device = isci_device;
-       request->io_request_completion = NULL;
-       request->terminated = false;
+       return ret_val;
+}
 
-       request->num_sg_entries = 0;
+enum sci_status
+scic_sds_request_start(struct scic_sds_request *request)
+{
+       if (request->device_sequence !=
+           scic_sds_remote_device_get_sequence(request->target_device))
+               return SCI_FAILURE;
 
-       request->complete_in_target = false;
+       if (request->state_handlers->start_handler)
+               return request->state_handlers->start_handler(request);
 
-       INIT_LIST_HEAD(&request->completed_node);
-       INIT_LIST_HEAD(&request->dev_node);
+       dev_warn(scic_to_dev(request->owning_controller),
+                "%s: SCIC IO Request requested to start while in wrong "
+                "state %d\n",
+                __func__,
+                sci_base_state_machine_get_state(&request->state_machine));
 
-       *isci_request = request;
-       isci_request_change_state(request, allocated);
+       return SCI_FAILURE_INVALID_STATE;
+}
 
-       return ret;
+enum sci_status
+scic_sds_io_request_terminate(struct scic_sds_request *request)
+{
+       if (request->state_handlers->abort_handler)
+               return request->state_handlers->abort_handler(request);
+
+       dev_warn(scic_to_dev(request->owning_controller),
+               "%s: SCIC IO Request requested to abort while in wrong "
+               "state %d\n",
+               __func__,
+               sci_base_state_machine_get_state(&request->state_machine));
+
+       return SCI_FAILURE_INVALID_STATE;
 }
 
-static int isci_request_alloc_io(
-       struct isci_host *isci_host,
-       struct sas_task *task,
-       struct isci_request **isci_request,
-       struct isci_remote_device *isci_device,
-       gfp_t gfp_flags)
+enum sci_status scic_sds_io_request_event_handler(
+       struct scic_sds_request *request,
+       u32 event_code)
 {
-       int retval = isci_request_alloc_core(isci_host, isci_request,
-                                            isci_device, gfp_flags);
+       if (request->state_handlers->event_handler)
+               return request->state_handlers->event_handler(request, event_code);
 
-       if (!retval) {
-               (*isci_request)->ttype_ptr.io_task_ptr = task;
-               (*isci_request)->ttype                 = io_task;
+       dev_warn(scic_to_dev(request->owning_controller),
+                "%s: SCIC IO Request given event code notification %x while "
+                "in wrong state %d\n",
+                __func__,
+                event_code,
+                sci_base_state_machine_get_state(&request->state_machine));
 
-               task->lldd_task = *isci_request;
-       }
-       return retval;
+       return SCI_FAILURE_INVALID_STATE;
 }
 
 /**
- * isci_request_alloc_tmf() - This function gets the request object from the
- *    isci_host dma cache and initializes the relevant fields as a sas_task.
- * @isci_host: This parameter specifies the ISCI host object
- * @sas_task: This parameter is the task struct from the upper layer driver.
- * @isci_request: This parameter will contain the pointer to the new
- *    isci_request object.
- * @isci_device: This parameter is the pointer to the isci remote device object
- *    that is the destination for this request.
- * @gfp_flags: This parameter specifies the os allocation flags.
  *
- * SCI_SUCCESS on successfull completion, or specific failure code.
+ * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start
+ *    operation is to be executed.
+ * @frame_index: The frame index returned by the hardware for the reqeust
+ *    object.
+ *
+ * This method invokes the core state frame handler for the
+ * SCIC_SDS_IO_REQUEST_T object. enum sci_status
  */
-int isci_request_alloc_tmf(
-       struct isci_host *isci_host,
-       struct isci_tmf *isci_tmf,
-       struct isci_request **isci_request,
-       struct isci_remote_device *isci_device,
-       gfp_t gfp_flags)
+enum sci_status scic_sds_io_request_frame_handler(
+       struct scic_sds_request *request,
+       u32 frame_index)
 {
-       int retval = isci_request_alloc_core(isci_host, isci_request,
-                                            isci_device, gfp_flags);
+       if (request->state_handlers->frame_handler)
+               return request->state_handlers->frame_handler(request, frame_index);
+
+       dev_warn(scic_to_dev(request->owning_controller),
+                "%s: SCIC IO Request given unexpected frame %x while in "
+                "state %d\n",
+                __func__,
+                frame_index,
+                sci_base_state_machine_get_state(&request->state_machine));
+
+       scic_sds_controller_release_frame(request->owning_controller, frame_index);
+       return SCI_FAILURE_INVALID_STATE;
+}
 
-       if (!retval) {
+/*
+ * This function copies response data for requests returning response data
+ *    instead of sense data.
+ * @sci_req: This parameter specifies the request object for which to copy
+ *    the response data.
+ */
+void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req)
+{
+       void *resp_buf;
+       u32 len;
+       struct ssp_response_iu *ssp_response;
+       struct isci_request *ireq = sci_req_to_ireq(sci_req);
+       struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq);
 
-               (*isci_request)->ttype_ptr.tmf_task_ptr = isci_tmf;
-               (*isci_request)->ttype = tmf_task;
+       ssp_response = &sci_req->ssp.rsp;
+
+       resp_buf = &isci_tmf->resp.resp_iu;
+
+       len = min_t(u32,
+                   SSP_RESP_IU_MAX_SIZE,
+                   be32_to_cpu(ssp_response->response_data_len));
+
+       memcpy(resp_buf, ssp_response->resp_data, len);
+}
+
+/*
+ * This method implements the action taken when a constructed
+ * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request.
+ * This method will, if necessary, allocate a TCi for the io request object and
+ * then will, if necessary, copy the constructed TC data into the actual TC
+ * buffer.  If everything is successful the post context field is updated with
+ * the TCi so the controller can post the request to the hardware. enum sci_status
+ * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES
+ */
+static enum sci_status scic_sds_request_constructed_state_start_handler(
+       struct scic_sds_request *request)
+{
+       struct scu_task_context *task_context;
+
+       if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
+               request->io_tag =
+                       scic_controller_allocate_io_tag(request->owning_controller);
        }
-       return retval;
+
+       /* Record the IO Tag in the request */
+       if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) {
+               task_context = request->task_context_buffer;
+
+               task_context->task_index = scic_sds_io_tag_get_index(request->io_tag);
+
+               switch (task_context->protocol_type) {
+               case SCU_TASK_CONTEXT_PROTOCOL_SMP:
+               case SCU_TASK_CONTEXT_PROTOCOL_SSP:
+                       /* SSP/SMP Frame */
+                       task_context->type.ssp.tag = request->io_tag;
+                       task_context->type.ssp.target_port_transfer_tag = 0xFFFF;
+                       break;
+
+               case SCU_TASK_CONTEXT_PROTOCOL_STP:
+                       /*
+                        * STP/SATA Frame
+                        * task_context->type.stp.ncq_tag = request->ncq_tag; */
+                       break;
+
+               case SCU_TASK_CONTEXT_PROTOCOL_NONE:
+                       /* / @todo When do we set no protocol type? */
+                       break;
+
+               default:
+                       /* This should never happen since we build the IO requests */
+                       break;
+               }
+
+               /*
+                * Check to see if we need to copy the task context buffer
+                * or have been building into the task context buffer */
+               if (request->was_tag_assigned_by_user == false) {
+                       scic_sds_controller_copy_task_context(
+                               request->owning_controller, request);
+               }
+
+               /* Add to the post_context the io tag value */
+               request->post_context |= scic_sds_io_tag_get_index(request->io_tag);
+
+               /* Everything is good go ahead and change state */
+               sci_base_state_machine_change_state(&request->state_machine,
+                       SCI_BASE_REQUEST_STATE_STARTED);
+
+               return SCI_SUCCESS;
+       }
+
+       return SCI_FAILURE_INSUFFICIENT_RESOURCES;
 }
 
-/**
- * isci_request_execute() - This function allocates the isci_request object,
- *    all fills in some common fields.
- * @isci_host: This parameter specifies the ISCI host object
- * @sas_task: This parameter is the task struct from the upper layer driver.
- * @isci_request: This parameter will contain the pointer to the new
- *    isci_request object.
- * @gfp_flags: This parameter specifies the os allocation flags.
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_terminate() request. Since the request
+ * has not yet been posted to the hardware the request transitions to the
+ * completed state. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_request_constructed_state_abort_handler(
+       struct scic_sds_request *request)
+{
+       /*
+        * This request has been terminated by the user make sure that the correct
+        * status code is returned */
+       scic_sds_request_set_status(request,
+               SCU_TASK_DONE_TASK_ABORT,
+               SCI_FAILURE_IO_TERMINATED);
+
+       sci_base_state_machine_change_state(&request->state_machine,
+               SCI_BASE_REQUEST_STATE_COMPLETED);
+       return SCI_SUCCESS;
+}
+
+/*
+ * *****************************************************************************
+ * *  STARTED STATE HANDLERS
+ * ***************************************************************************** */
+
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_terminate() request. Since the request
+ * has been posted to the hardware the io request state is changed to the
+ * aborting state. enum sci_status SCI_SUCCESS
+ */
+enum sci_status scic_sds_request_started_state_abort_handler(
+       struct scic_sds_request *request)
+{
+       if (request->has_started_substate_machine)
+               sci_base_state_machine_stop(&request->started_substate_machine);
+
+       sci_base_state_machine_change_state(&request->state_machine,
+               SCI_BASE_REQUEST_STATE_ABORTING);
+       return SCI_SUCCESS;
+}
+
+/*
+ * scic_sds_request_started_state_tc_completion_handler() - This method process
+ *    TC (task context) completions for normal IO request (i.e. Task/Abort
+ *    Completions of type 0).  This method will update the
+ *    SCIC_SDS_IO_REQUEST_T::status field.
+ * @sci_req: This parameter specifies the request for which a completion
+ *    occurred.
+ * @completion_code: This parameter specifies the completion code received from
+ *    the SCU.
  *
- * SCI_SUCCESS on successfull completion, or specific failure code.
  */
-int isci_request_execute(
-       struct isci_host *isci_host,
-       struct sas_task *task,
-       struct isci_request **isci_request,
-       gfp_t gfp_flags)
+static enum sci_status
+scic_sds_request_started_state_tc_completion_handler(struct scic_sds_request *sci_req,
+                                                    u32 completion_code)
 {
-       int ret = 0;
-       struct scic_sds_remote_device *sci_device;
-       enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
-       struct isci_remote_device *isci_device;
-       struct isci_request *request;
-       unsigned long flags;
+       u8 datapres;
+       struct ssp_response_iu *resp_iu;
 
-       isci_device = task->dev->lldd_dev;
-       sci_device = &isci_device->sci;
+       /*
+        * TODO: Any SDMA return code of other than 0 is bad
+        *       decode 0x003C0000 to determine SDMA status
+        */
+       switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD):
+               scic_sds_request_set_status(sci_req,
+                                           SCU_TASK_DONE_GOOD,
+                                           SCI_SUCCESS);
+               break;
 
-       /* do common allocation and init of request object. */
-       ret = isci_request_alloc_io(
-               isci_host,
-               task,
-               &request,
-               isci_device,
-               gfp_flags
-               );
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP):
+       {
+               /*
+                * There are times when the SCU hardware will return an early
+                * response because the io request specified more data than is
+                * returned by the target device (mode pages, inquiry data,
+                * etc.).  We must check the response stats to see if this is
+                * truly a failed request or a good request that just got
+                * completed early.
+                */
+               struct ssp_response_iu *resp = &sci_req->ssp.rsp;
+               ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
+
+               sci_swab32_cpy(&sci_req->ssp.rsp,
+                              &sci_req->ssp.rsp,
+                              word_cnt);
+
+               if (resp->status == 0) {
+                       scic_sds_request_set_status(
+                               sci_req,
+                               SCU_TASK_DONE_GOOD,
+                               SCI_SUCCESS_IO_DONE_EARLY);
+               } else {
+                       scic_sds_request_set_status(
+                               sci_req,
+                               SCU_TASK_DONE_CHECK_RESPONSE,
+                               SCI_FAILURE_IO_RESPONSE_VALID);
+               }
+       }
+       break;
 
-       if (ret)
-               goto out;
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE):
+       {
+               ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
 
-       status = isci_io_request_build(isci_host, request, isci_device);
-       if (status != SCI_SUCCESS) {
-               dev_warn(&isci_host->pdev->dev,
-                        "%s: request_construct failed - status = 0x%x\n",
-                        __func__,
-                        status);
-               goto out;
+               sci_swab32_cpy(&sci_req->ssp.rsp,
+                              &sci_req->ssp.rsp,
+                              word_cnt);
+
+               scic_sds_request_set_status(sci_req,
+                                           SCU_TASK_DONE_CHECK_RESPONSE,
+                                           SCI_FAILURE_IO_RESPONSE_VALID);
+               break;
        }
 
-       spin_lock_irqsave(&isci_host->scic_lock, flags);
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR):
+               /*
+                * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame
+                * guaranteed to be received before this completion status is
+                * posted?
+                */
+               resp_iu = &sci_req->ssp.rsp;
+               datapres = resp_iu->datapres;
+
+               if ((datapres == 0x01) || (datapres == 0x02)) {
+                       scic_sds_request_set_status(
+                               sci_req,
+                               SCU_TASK_DONE_CHECK_RESPONSE,
+                               SCI_FAILURE_IO_RESPONSE_VALID);
+               } else
+                       scic_sds_request_set_status(
+                               sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
+               break;
 
-       /* send the request, let the core assign the IO TAG.    */
-       status = scic_controller_start_io(&isci_host->sci, sci_device,
-                                         &request->sci,
-                                         SCI_CONTROLLER_INVALID_IO_TAG);
-       if (status != SCI_SUCCESS &&
-           status != SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
-               dev_warn(&isci_host->pdev->dev,
-                        "%s: failed request start (0x%x)\n",
-                        __func__, status);
-               spin_unlock_irqrestore(&isci_host->scic_lock, flags);
-               goto out;
+       /* only stp device gets suspended. */
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR):
+               if (sci_req->protocol == SCIC_STP_PROTOCOL) {
+                       scic_sds_request_set_status(
+                               sci_req,
+                               SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+                               SCU_COMPLETION_TL_STATUS_SHIFT,
+                               SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
+               } else {
+                       scic_sds_request_set_status(
+                               sci_req,
+                               SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+                               SCU_COMPLETION_TL_STATUS_SHIFT,
+                               SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+               }
+               break;
+
+       /* both stp/ssp device gets suspended */
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED):
+               scic_sds_request_set_status(
+                       sci_req,
+                       SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+                       SCU_COMPLETION_TL_STATUS_SHIFT,
+                       SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED);
+               break;
+
+       /* neither ssp nor stp gets suspended. */
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV):
+       case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND):
+       default:
+               scic_sds_request_set_status(
+                       sci_req,
+                       SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
+                       SCU_COMPLETION_TL_STATUS_SHIFT,
+                       SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+               break;
        }
 
-       /* Either I/O started OK, or the core has signaled that
-        * the device needs a target reset.
-        *
-        * In either case, hold onto the I/O for later.
-        *
-        * Update it's status and add it to the list in the
-        * remote device object.
+       /*
+        * TODO: This is probably wrong for ACK/NAK timeout conditions
         */
-       isci_request_change_state(request, started);
-       list_add(&request->dev_node, &isci_device->reqs_in_process);
 
-       if (status == SCI_SUCCESS) {
-               /* Save the tag for possible task mgmt later. */
-               request->io_tag = scic_io_request_get_io_tag(&request->sci);
+       /* In all cases we will treat this as the completion of the IO req. */
+       sci_base_state_machine_change_state(
+                       &sci_req->state_machine,
+                       SCI_BASE_REQUEST_STATE_COMPLETED);
+       return SCI_SUCCESS;
+}
+
+enum sci_status
+scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code)
+{
+       if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED &&
+           request->has_started_substate_machine == false)
+               return scic_sds_request_started_state_tc_completion_handler(request, completion_code);
+       else if (request->state_handlers->tc_completion_handler)
+               return request->state_handlers->tc_completion_handler(request, completion_code);
+
+       dev_warn(scic_to_dev(request->owning_controller),
+               "%s: SCIC IO Request given task completion notification %x "
+               "while in wrong state %d\n",
+               __func__,
+               completion_code,
+               sci_base_state_machine_get_state(&request->state_machine));
+
+       return SCI_FAILURE_INVALID_STATE;
+
+}
+
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_frame_handler() request. This method
+ * first determines the frame type received.  If this is a response frame then
+ * the response data is copied to the io request response buffer for processing
+ * at completion time. If the frame type is not a response buffer an error is
+ * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE
+ */
+static enum sci_status
+scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req,
+                                            u32 frame_index)
+{
+       enum sci_status status;
+       u32 *frame_header;
+       struct ssp_frame_hdr ssp_hdr;
+       ssize_t word_cnt;
+
+       status = scic_sds_unsolicited_frame_control_get_header(
+               &(scic_sds_request_get_controller(sci_req)->uf_control),
+               frame_index,
+               (void **)&frame_header);
+
+       word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32);
+       sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt);
+
+       if (ssp_hdr.frame_type == SSP_RESPONSE) {
+               struct ssp_response_iu *resp_iu;
+               ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32);
+
+               status = scic_sds_unsolicited_frame_control_get_buffer(
+                       &(scic_sds_request_get_controller(sci_req)->uf_control),
+                       frame_index,
+                       (void **)&resp_iu);
+
+               sci_swab32_cpy(&sci_req->ssp.rsp,
+                              resp_iu, word_cnt);
+
+               resp_iu = &sci_req->ssp.rsp;
+
+               if ((resp_iu->datapres == 0x01) ||
+                   (resp_iu->datapres == 0x02)) {
+                       scic_sds_request_set_status(
+                               sci_req,
+                               SCU_TASK_DONE_CHECK_RESPONSE,
+                               SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR);
+               } else
+                       scic_sds_request_set_status(
+                               sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS);
        } else {
-               /* The request did not really start in the
-                * hardware, so clear the request handle
-                * here so no terminations will be done.
-                */
-               request->terminated = true;
+               /* This was not a response frame why did it get forwarded? */
+               dev_err(scic_to_dev(sci_req->owning_controller),
+                       "%s: SCIC IO Request 0x%p received unexpected "
+                       "frame %d type 0x%02x\n",
+                       __func__,
+                       sci_req,
+                       frame_index,
+                       ssp_hdr.frame_type);
        }
-       spin_unlock_irqrestore(&isci_host->scic_lock, flags);
 
-       if (status ==
-           SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
-               /* Signal libsas that we need the SCSI error
-               * handler thread to work on this I/O and that
-               * we want a device reset.
-               */
-               spin_lock_irqsave(&task->task_state_lock, flags);
-               task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
-               spin_unlock_irqrestore(&task->task_state_lock, flags);
+       /*
+        * In any case we are done with this frame buffer return it to the
+        * controller
+        */
+       scic_sds_controller_release_frame(
+               sci_req->owning_controller, frame_index);
 
-               /* Cause this task to be scheduled in the SCSI error
-               * handler thread.
-               */
-               isci_execpath_callback(isci_host, task,
-                                      sas_task_abort);
+       return SCI_SUCCESS;
+}
 
-               /* Change the status, since we are holding
-               * the I/O until it is managed by the SCSI
-               * error handler.
-               */
-               status = SCI_SUCCESS;
+/*
+ * *****************************************************************************
+ * *  COMPLETED STATE HANDLERS
+ * ***************************************************************************** */
+
+
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_complete() request. This method frees up
+ * any io request resources that have been allocated and transitions the
+ * request to its final state. Consider stopping the state machine instead of
+ * transitioning to the final state? enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_request_completed_state_complete_handler(
+       struct scic_sds_request *request)
+{
+       if (request->was_tag_assigned_by_user != true) {
+               scic_controller_free_io_tag(
+                       request->owning_controller, request->io_tag);
        }
 
- out:
-       if (status != SCI_SUCCESS) {
-               /* release dma memory on failure. */
-               isci_request_free(isci_host, request);
-               request = NULL;
-               ret = SCI_FAILURE;
+       if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) {
+               scic_sds_controller_release_frame(
+                       request->owning_controller, request->saved_rx_frame_index);
        }
 
-       *isci_request = request;
-       return ret;
+       sci_base_state_machine_change_state(&request->state_machine,
+               SCI_BASE_REQUEST_STATE_FINAL);
+       return SCI_SUCCESS;
+}
+
+/*
+ * *****************************************************************************
+ * *  ABORTING STATE HANDLERS
+ * ***************************************************************************** */
+
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_terminate() request. This method is the
+ * io request aborting state abort handlers.  On receipt of a multiple
+ * terminate requests the io request will transition to the completed state.
+ * This should not happen in normal operation. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_request_aborting_state_abort_handler(
+       struct scic_sds_request *request)
+{
+       sci_base_state_machine_change_state(&request->state_machine,
+               SCI_BASE_REQUEST_STATE_COMPLETED);
+       return SCI_SUCCESS;
+}
+
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_task_completion() request. This method
+ * decodes the completion type waiting for the abort task complete
+ * notification. When the abort task complete is received the io request
+ * transitions to the completed state. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_request_aborting_state_tc_completion_handler(
+       struct scic_sds_request *sci_req,
+       u32 completion_code)
+{
+       switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) {
+       case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT):
+       case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT):
+               scic_sds_request_set_status(
+                       sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED
+                       );
+
+               sci_base_state_machine_change_state(&sci_req->state_machine,
+                       SCI_BASE_REQUEST_STATE_COMPLETED);
+               break;
+
+       default:
+               /*
+                * Unless we get some strange error wait for the task abort to complete
+                * TODO: Should there be a state change for this completion? */
+               break;
+       }
+
+       return SCI_SUCCESS;
+}
+
+/*
+ * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T
+ * object receives a scic_sds_request_frame_handler() request. This method
+ * discards the unsolicited frame since we are waiting for the abort task
+ * completion. enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_request_aborting_state_frame_handler(
+       struct scic_sds_request *sci_req,
+       u32 frame_index)
+{
+       /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */
+
+       scic_sds_controller_release_frame(
+               sci_req->owning_controller, frame_index);
+
+       return SCI_SUCCESS;
 }
 
+static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = {
+       [SCI_BASE_REQUEST_STATE_INITIAL] = {
+       },
+       [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
+               .start_handler          = scic_sds_request_constructed_state_start_handler,
+               .abort_handler          = scic_sds_request_constructed_state_abort_handler,
+       },
+       [SCI_BASE_REQUEST_STATE_STARTED] = {
+               .abort_handler          = scic_sds_request_started_state_abort_handler,
+               .tc_completion_handler  = scic_sds_request_started_state_tc_completion_handler,
+               .frame_handler          = scic_sds_request_started_state_frame_handler,
+       },
+       [SCI_BASE_REQUEST_STATE_COMPLETED] = {
+               .complete_handler       = scic_sds_request_completed_state_complete_handler,
+       },
+       [SCI_BASE_REQUEST_STATE_ABORTING] = {
+               .abort_handler          = scic_sds_request_aborting_state_abort_handler,
+               .tc_completion_handler  = scic_sds_request_aborting_state_tc_completion_handler,
+               .frame_handler          = scic_sds_request_aborting_state_frame_handler,
+       },
+       [SCI_BASE_REQUEST_STATE_FINAL] = {
+       },
+};
+
 
 /**
  * isci_request_process_response_iu() - This function sets the status and
@@ -541,7 +1262,7 @@ static void isci_request_handle_controller_specific_errors(
 {
        unsigned int cstatus;
 
-       cstatus = scic_request_get_controller_status(&request->sci);
+       cstatus = request->sci.scu_status;
 
        dev_dbg(&request->isci_host->pdev->dev,
                "%s: %p SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR "
@@ -833,20 +1554,9 @@ static void isci_task_save_for_upper_layer_completion(
        }
 }
 
-/**
- * isci_request_io_request_complete() - This function is called by the sci core
- *    when an io request completes.
- * @isci_host: This parameter specifies the ISCI host object
- * @request: This parameter is the completed isci_request object.
- * @completion_status: This parameter specifies the completion status from the
- *    sci core.
- *
- * none.
- */
-void isci_request_io_request_complete(
-       struct        isci_host *isci_host,
-       struct        isci_request *request,
-       enum sci_io_status completion_status)
+static void isci_request_io_request_complete(struct isci_host *isci_host,
+                                            struct isci_request *request,
+                                            enum sci_io_status completion_status)
 {
        struct sas_task *task = isci_request_access_task(request);
        struct ssp_response_iu *resp_iu;
@@ -1035,8 +1745,7 @@ void isci_request_io_request_complete(
                                 * There is a possibility that less data than
                                 * the maximum was transferred.
                                 */
-                               u32 transferred_length
-                                       = scic_io_request_get_number_of_bytes_transferred(&request->sci);
+                               u32 transferred_length = sci_req_tx_bytes(&request->sci);
 
                                task->task_status.residual
                                        = task->total_xfer_len - transferred_length;
@@ -1158,3 +1867,680 @@ void isci_request_io_request_complete(
 
        isci_host_can_dequeue(isci_host, 1);
 }
+
+/**
+ * scic_sds_request_initial_state_enter() -
+ * @object: This parameter specifies the base object for which the state
+ *    transition is occurring.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial
+ * base request is constructed. Entry into the initial state sets all handlers
+ * for the io request object to their default handlers. none
+ */
+static void scic_sds_request_initial_state_enter(void *object)
+{
+       struct scic_sds_request *sci_req = object;
+
+       SET_STATE_HANDLER(
+               sci_req,
+               scic_sds_request_state_handler_table,
+               SCI_BASE_REQUEST_STATE_INITIAL
+               );
+}
+
+/**
+ * scic_sds_request_constructed_state_enter() -
+ * @object: The io request object that is to enter the constructed state.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers
+ * for the the constructed state. none
+ */
+static void scic_sds_request_constructed_state_enter(void *object)
+{
+       struct scic_sds_request *sci_req = object;
+
+       SET_STATE_HANDLER(
+               sci_req,
+               scic_sds_request_state_handler_table,
+               SCI_BASE_REQUEST_STATE_CONSTRUCTED
+               );
+}
+
+/**
+ * scic_sds_request_started_state_enter() -
+ * @object: This parameter specifies the base object for which the state
+ *    transition is occurring.  This is cast into a SCIC_SDS_IO_REQUEST object.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a
+ * SCSI Task request we must enter the started substate machine. none
+ */
+static void scic_sds_request_started_state_enter(void *object)
+{
+       struct scic_sds_request *sci_req = object;
+
+       SET_STATE_HANDLER(
+               sci_req,
+               scic_sds_request_state_handler_table,
+               SCI_BASE_REQUEST_STATE_STARTED
+               );
+
+       /*
+        * Most of the request state machines have a started substate machine so
+        * start its execution on the entry to the started state. */
+       if (sci_req->has_started_substate_machine == true)
+               sci_base_state_machine_start(&sci_req->started_substate_machine);
+}
+
+/**
+ * scic_sds_request_started_state_exit() -
+ * @object: This parameter specifies the base object for which the state
+ *    transition is occurring.  This object is cast into a SCIC_SDS_IO_REQUEST
+ *    object.
+ *
+ * This method implements the actions taken when exiting the
+ * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be
+ * to stop the started substate machine. none
+ */
+static void scic_sds_request_started_state_exit(void *object)
+{
+       struct scic_sds_request *sci_req = object;
+
+       if (sci_req->has_started_substate_machine == true)
+               sci_base_state_machine_stop(&sci_req->started_substate_machine);
+}
+
+/**
+ * scic_sds_request_completed_state_enter() -
+ * @object: This parameter specifies the base object for which the state
+ *    transition is occurring.  This object is cast into a SCIC_SDS_IO_REQUEST
+ *    object.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_COMPLETED state.  This state is entered when the
+ * SCIC_SDS_IO_REQUEST has completed.  The method will decode the request
+ * completion status and convert it to an enum sci_status to return in the
+ * completion callback function. none
+ */
+static void scic_sds_request_completed_state_enter(void *object)
+{
+       struct scic_sds_request *sci_req = object;
+       struct scic_sds_controller *scic =
+               scic_sds_request_get_controller(sci_req);
+       struct isci_host *ihost = scic_to_ihost(scic);
+       struct isci_request *ireq = sci_req_to_ireq(sci_req);
+
+       SET_STATE_HANDLER(sci_req,
+                         scic_sds_request_state_handler_table,
+                         SCI_BASE_REQUEST_STATE_COMPLETED);
+
+       /* Tell the SCI_USER that the IO request is complete */
+       if (sci_req->is_task_management_request == false)
+               isci_request_io_request_complete(ihost, ireq,
+                                                sci_req->sci_status);
+       else
+               isci_task_request_complete(ihost, ireq, sci_req->sci_status);
+}
+
+/**
+ * scic_sds_request_aborting_state_enter() -
+ * @object: This parameter specifies the base object for which the state
+ *    transition is occurring.  This object is cast into a SCIC_SDS_IO_REQUEST
+ *    object.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_ABORTING state. none
+ */
+static void scic_sds_request_aborting_state_enter(void *object)
+{
+       struct scic_sds_request *sci_req = object;
+
+       /* Setting the abort bit in the Task Context is required by the silicon. */
+       sci_req->task_context_buffer->abort = 1;
+
+       SET_STATE_HANDLER(
+               sci_req,
+               scic_sds_request_state_handler_table,
+               SCI_BASE_REQUEST_STATE_ABORTING
+               );
+}
+
+/**
+ * scic_sds_request_final_state_enter() -
+ * @object: This parameter specifies the base object for which the state
+ *    transition is occurring.  This is cast into a SCIC_SDS_IO_REQUEST object.
+ *
+ * This method implements the actions taken when entering the
+ * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the
+ * state handlers in place. none
+ */
+static void scic_sds_request_final_state_enter(void *object)
+{
+       struct scic_sds_request *sci_req = object;
+
+       SET_STATE_HANDLER(
+               sci_req,
+               scic_sds_request_state_handler_table,
+               SCI_BASE_REQUEST_STATE_FINAL
+               );
+}
+
+static const struct sci_base_state scic_sds_request_state_table[] = {
+       [SCI_BASE_REQUEST_STATE_INITIAL] = {
+               .enter_state = scic_sds_request_initial_state_enter,
+       },
+       [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = {
+               .enter_state = scic_sds_request_constructed_state_enter,
+       },
+       [SCI_BASE_REQUEST_STATE_STARTED] = {
+               .enter_state = scic_sds_request_started_state_enter,
+               .exit_state  = scic_sds_request_started_state_exit
+       },
+       [SCI_BASE_REQUEST_STATE_COMPLETED] = {
+               .enter_state = scic_sds_request_completed_state_enter,
+       },
+       [SCI_BASE_REQUEST_STATE_ABORTING] = {
+               .enter_state = scic_sds_request_aborting_state_enter,
+       },
+       [SCI_BASE_REQUEST_STATE_FINAL] = {
+               .enter_state = scic_sds_request_final_state_enter,
+       },
+};
+
+static void scic_sds_general_request_construct(struct scic_sds_controller *scic,
+                                              struct scic_sds_remote_device *sci_dev,
+                                              u16 io_tag, struct scic_sds_request *sci_req)
+{
+       sci_base_state_machine_construct(&sci_req->state_machine, sci_req,
+                       scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL);
+       sci_base_state_machine_start(&sci_req->state_machine);
+
+       sci_req->io_tag = io_tag;
+       sci_req->owning_controller = scic;
+       sci_req->target_device = sci_dev;
+       sci_req->has_started_substate_machine = false;
+       sci_req->protocol = SCIC_NO_PROTOCOL;
+       sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX;
+       sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev);
+
+       sci_req->sci_status   = SCI_SUCCESS;
+       sci_req->scu_status   = 0;
+       sci_req->post_context = 0xFFFFFFFF;
+
+       sci_req->is_task_management_request = false;
+
+       if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
+               sci_req->was_tag_assigned_by_user = false;
+               sci_req->task_context_buffer = NULL;
+       } else {
+               sci_req->was_tag_assigned_by_user = true;
+
+               sci_req->task_context_buffer =
+                       scic_sds_controller_get_task_context_buffer(scic, io_tag);
+       }
+}
+
+static enum sci_status
+scic_io_request_construct(struct scic_sds_controller *scic,
+                         struct scic_sds_remote_device *sci_dev,
+                         u16 io_tag, struct scic_sds_request *sci_req)
+{
+       struct domain_device *dev = sci_dev_to_domain(sci_dev);
+       enum sci_status status = SCI_SUCCESS;
+
+       /* Build the common part of the request */
+       scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
+
+       if (sci_dev->rnc.remote_node_index ==
+                       SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX)
+               return SCI_FAILURE_INVALID_REMOTE_DEVICE;
+
+       if (dev->dev_type == SAS_END_DEV)
+               scic_sds_ssp_io_request_assign_buffers(sci_req);
+       else if ((dev->dev_type == SATA_DEV) ||
+                (dev->tproto & SAS_PROTOCOL_STP)) {
+               scic_sds_stp_request_assign_buffers(sci_req);
+               memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd));
+       } else if (dev_is_expander(dev)) {
+               scic_sds_smp_request_assign_buffers(sci_req);
+               memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd));
+       } else
+               status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+
+       if (status == SCI_SUCCESS) {
+               memset(sci_req->task_context_buffer, 0,
+                      offsetof(struct scu_task_context, sgl_pair_ab));
+       }
+
+       return status;
+}
+
+enum sci_status scic_task_request_construct(struct scic_sds_controller *scic,
+                                           struct scic_sds_remote_device *sci_dev,
+                                           u16 io_tag, struct scic_sds_request *sci_req)
+{
+       struct domain_device *dev = sci_dev_to_domain(sci_dev);
+       enum sci_status status = SCI_SUCCESS;
+
+       /* Build the common part of the request */
+       scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req);
+
+       if (dev->dev_type == SAS_END_DEV) {
+               scic_sds_ssp_task_request_assign_buffers(sci_req);
+
+               sci_req->has_started_substate_machine = true;
+
+               /* Construct the started sub-state machine. */
+               sci_base_state_machine_construct(
+                       &sci_req->started_substate_machine,
+                       sci_req,
+                       scic_sds_io_request_started_task_mgmt_substate_table,
+                       SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION
+                       );
+       } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))
+               scic_sds_stp_request_assign_buffers(sci_req);
+       else
+               status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+
+       if (status == SCI_SUCCESS) {
+               sci_req->is_task_management_request = true;
+               memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context));
+       }
+
+       return status;
+}
+
+static enum sci_status isci_request_ssp_request_construct(
+       struct isci_request *request)
+{
+       enum sci_status status;
+
+       dev_dbg(&request->isci_host->pdev->dev,
+               "%s: request = %p\n",
+               __func__,
+               request);
+       status = scic_io_request_construct_basic_ssp(&request->sci);
+       return status;
+}
+
+static enum sci_status isci_request_stp_request_construct(
+       struct isci_request *request)
+{
+       struct sas_task *task = isci_request_access_task(request);
+       enum sci_status status;
+       struct host_to_dev_fis *register_fis;
+
+       dev_dbg(&request->isci_host->pdev->dev,
+               "%s: request = %p\n",
+               __func__,
+               request);
+
+       /* Get the host_to_dev_fis from the core and copy
+        * the fis from the task into it.
+        */
+       register_fis = isci_sata_task_to_fis_copy(task);
+
+       status = scic_io_request_construct_basic_sata(&request->sci);
+
+       /* Set the ncq tag in the fis, from the queue
+        * command in the task.
+        */
+       if (isci_sata_is_task_ncq(task)) {
+
+               isci_sata_set_ncq_tag(
+                       register_fis,
+                       task
+                       );
+       }
+
+       return status;
+}
+
+/*
+ * isci_smp_request_build() - This function builds the smp request.
+ * @ireq: This parameter points to the isci_request allocated in the
+ *    request construct function.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+static enum sci_status isci_smp_request_build(struct isci_request *ireq)
+{
+       enum sci_status status = SCI_FAILURE;
+       struct sas_task *task = isci_request_access_task(ireq);
+       struct scic_sds_request *sci_req = &ireq->sci;
+
+       dev_dbg(&ireq->isci_host->pdev->dev,
+               "%s: request = %p\n", __func__, ireq);
+
+       dev_dbg(&ireq->isci_host->pdev->dev,
+               "%s: smp_req len = %d\n",
+               __func__,
+               task->smp_task.smp_req.length);
+
+       /* copy the smp_command to the address; */
+       sg_copy_to_buffer(&task->smp_task.smp_req, 1,
+                         &sci_req->smp.cmd,
+                         sizeof(struct smp_req));
+
+       status = scic_io_request_construct_smp(sci_req);
+       if (status != SCI_SUCCESS)
+               dev_warn(&ireq->isci_host->pdev->dev,
+                        "%s: failed with status = %d\n",
+                        __func__,
+                        status);
+
+       return status;
+}
+
+/**
+ * isci_io_request_build() - This function builds the io request object.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @request: This parameter points to the isci_request object allocated in the
+ *    request construct function.
+ * @sci_device: This parameter is the handle for the sci core's remote device
+ *    object that is the destination for this request.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+static enum sci_status isci_io_request_build(
+       struct isci_host *isci_host,
+       struct isci_request *request,
+       struct isci_remote_device *isci_device)
+{
+       enum sci_status status = SCI_SUCCESS;
+       struct sas_task *task = isci_request_access_task(request);
+       struct scic_sds_remote_device *sci_device = &isci_device->sci;
+
+       dev_dbg(&isci_host->pdev->dev,
+               "%s: isci_device = 0x%p; request = %p, "
+               "num_scatter = %d\n",
+               __func__,
+               isci_device,
+               request,
+               task->num_scatter);
+
+       /* map the sgl addresses, if present.
+        * libata does the mapping for sata devices
+        * before we get the request.
+        */
+       if (task->num_scatter &&
+           !sas_protocol_ata(task->task_proto) &&
+           !(SAS_PROTOCOL_SMP & task->task_proto)) {
+
+               request->num_sg_entries = dma_map_sg(
+                       &isci_host->pdev->dev,
+                       task->scatter,
+                       task->num_scatter,
+                       task->data_dir
+                       );
+
+               if (request->num_sg_entries == 0)
+                       return SCI_FAILURE_INSUFFICIENT_RESOURCES;
+       }
+
+       /* build the common request object. For now,
+        * we will let the core allocate the IO tag.
+        */
+       status = scic_io_request_construct(&isci_host->sci, sci_device,
+                                          SCI_CONTROLLER_INVALID_IO_TAG,
+                                          &request->sci);
+
+       if (status != SCI_SUCCESS) {
+               dev_warn(&isci_host->pdev->dev,
+                        "%s: failed request construct\n",
+                        __func__);
+               return SCI_FAILURE;
+       }
+
+       switch (task->task_proto) {
+       case SAS_PROTOCOL_SMP:
+               status = isci_smp_request_build(request);
+               break;
+       case SAS_PROTOCOL_SSP:
+               status = isci_request_ssp_request_construct(request);
+               break;
+       case SAS_PROTOCOL_SATA:
+       case SAS_PROTOCOL_STP:
+       case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
+               status = isci_request_stp_request_construct(request);
+               break;
+       default:
+               dev_warn(&isci_host->pdev->dev,
+                        "%s: unknown protocol\n", __func__);
+               return SCI_FAILURE;
+       }
+
+       return SCI_SUCCESS;
+}
+
+/**
+ * isci_request_alloc_core() - This function gets the request object from the
+ *    isci_host dma cache.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @isci_request: This parameter will contain the pointer to the new
+ *    isci_request object.
+ * @isci_device: This parameter is the pointer to the isci remote device object
+ *    that is the destination for this request.
+ * @gfp_flags: This parameter specifies the os allocation flags.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+static int isci_request_alloc_core(
+       struct isci_host *isci_host,
+       struct isci_request **isci_request,
+       struct isci_remote_device *isci_device,
+       gfp_t gfp_flags)
+{
+       int ret = 0;
+       dma_addr_t handle;
+       struct isci_request *request;
+
+
+       /* get pointer to dma memory. This actually points
+        * to both the isci_remote_device object and the
+        * sci object. The isci object is at the beginning
+        * of the memory allocated here.
+        */
+       request = dma_pool_alloc(isci_host->dma_pool, gfp_flags, &handle);
+       if (!request) {
+               dev_warn(&isci_host->pdev->dev,
+                        "%s: dma_pool_alloc returned NULL\n", __func__);
+               return -ENOMEM;
+       }
+
+       /* initialize the request object.       */
+       spin_lock_init(&request->state_lock);
+       request->request_daddr = handle;
+       request->isci_host = isci_host;
+       request->isci_device = isci_device;
+       request->io_request_completion = NULL;
+       request->terminated = false;
+
+       request->num_sg_entries = 0;
+
+       request->complete_in_target = false;
+
+       INIT_LIST_HEAD(&request->completed_node);
+       INIT_LIST_HEAD(&request->dev_node);
+
+       *isci_request = request;
+       isci_request_change_state(request, allocated);
+
+       return ret;
+}
+
+static int isci_request_alloc_io(
+       struct isci_host *isci_host,
+       struct sas_task *task,
+       struct isci_request **isci_request,
+       struct isci_remote_device *isci_device,
+       gfp_t gfp_flags)
+{
+       int retval = isci_request_alloc_core(isci_host, isci_request,
+                                            isci_device, gfp_flags);
+
+       if (!retval) {
+               (*isci_request)->ttype_ptr.io_task_ptr = task;
+               (*isci_request)->ttype                 = io_task;
+
+               task->lldd_task = *isci_request;
+       }
+       return retval;
+}
+
+/**
+ * isci_request_alloc_tmf() - This function gets the request object from the
+ *    isci_host dma cache and initializes the relevant fields as a sas_task.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @sas_task: This parameter is the task struct from the upper layer driver.
+ * @isci_request: This parameter will contain the pointer to the new
+ *    isci_request object.
+ * @isci_device: This parameter is the pointer to the isci remote device object
+ *    that is the destination for this request.
+ * @gfp_flags: This parameter specifies the os allocation flags.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+int isci_request_alloc_tmf(
+       struct isci_host *isci_host,
+       struct isci_tmf *isci_tmf,
+       struct isci_request **isci_request,
+       struct isci_remote_device *isci_device,
+       gfp_t gfp_flags)
+{
+       int retval = isci_request_alloc_core(isci_host, isci_request,
+                                            isci_device, gfp_flags);
+
+       if (!retval) {
+
+               (*isci_request)->ttype_ptr.tmf_task_ptr = isci_tmf;
+               (*isci_request)->ttype = tmf_task;
+       }
+       return retval;
+}
+
+/**
+ * isci_request_execute() - This function allocates the isci_request object,
+ *    all fills in some common fields.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @sas_task: This parameter is the task struct from the upper layer driver.
+ * @isci_request: This parameter will contain the pointer to the new
+ *    isci_request object.
+ * @gfp_flags: This parameter specifies the os allocation flags.
+ *
+ * SCI_SUCCESS on successfull completion, or specific failure code.
+ */
+int isci_request_execute(
+       struct isci_host *isci_host,
+       struct sas_task *task,
+       struct isci_request **isci_request,
+       gfp_t gfp_flags)
+{
+       int ret = 0;
+       struct scic_sds_remote_device *sci_device;
+       enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
+       struct isci_remote_device *isci_device;
+       struct isci_request *request;
+       unsigned long flags;
+
+       isci_device = task->dev->lldd_dev;
+       sci_device = &isci_device->sci;
+
+       /* do common allocation and init of request object. */
+       ret = isci_request_alloc_io(
+               isci_host,
+               task,
+               &request,
+               isci_device,
+               gfp_flags
+               );
+
+       if (ret)
+               goto out;
+
+       status = isci_io_request_build(isci_host, request, isci_device);
+       if (status != SCI_SUCCESS) {
+               dev_warn(&isci_host->pdev->dev,
+                        "%s: request_construct failed - status = 0x%x\n",
+                        __func__,
+                        status);
+               goto out;
+       }
+
+       spin_lock_irqsave(&isci_host->scic_lock, flags);
+
+       /* send the request, let the core assign the IO TAG.    */
+       status = scic_controller_start_io(&isci_host->sci, sci_device,
+                                         &request->sci,
+                                         SCI_CONTROLLER_INVALID_IO_TAG);
+       if (status != SCI_SUCCESS &&
+           status != SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
+               dev_warn(&isci_host->pdev->dev,
+                        "%s: failed request start (0x%x)\n",
+                        __func__, status);
+               spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+               goto out;
+       }
+
+       /* Either I/O started OK, or the core has signaled that
+        * the device needs a target reset.
+        *
+        * In either case, hold onto the I/O for later.
+        *
+        * Update it's status and add it to the list in the
+        * remote device object.
+        */
+       isci_request_change_state(request, started);
+       list_add(&request->dev_node, &isci_device->reqs_in_process);
+
+       if (status == SCI_SUCCESS) {
+               /* Save the tag for possible task mgmt later. */
+               request->io_tag = request->sci.io_tag;
+       } else {
+               /* The request did not really start in the
+                * hardware, so clear the request handle
+                * here so no terminations will be done.
+                */
+               request->terminated = true;
+       }
+       spin_unlock_irqrestore(&isci_host->scic_lock, flags);
+
+       if (status ==
+           SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) {
+               /* Signal libsas that we need the SCSI error
+               * handler thread to work on this I/O and that
+               * we want a device reset.
+               */
+               spin_lock_irqsave(&task->task_state_lock, flags);
+               task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
+               spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+               /* Cause this task to be scheduled in the SCSI error
+               * handler thread.
+               */
+               isci_execpath_callback(isci_host, task,
+                                      sas_task_abort);
+
+               /* Change the status, since we are holding
+               * the I/O until it is managed by the SCSI
+               * error handler.
+               */
+               status = SCI_SUCCESS;
+       }
+
+ out:
+       if (status != SCI_SUCCESS) {
+               /* release dma memory on failure. */
+               isci_request_free(isci_host, request);
+               request = NULL;
+               ret = SCI_FAILURE;
+       }
+
+       *isci_request = request;
+       return ret;
+}
+
+
+
index 06786ec..932ea76 100644 (file)
@@ -58,7 +58,8 @@
 
 #include "isci.h"
 #include "host.h"
-#include "scic_sds_request.h"
+#include "scu_task_context.h"
+#include "stp_request.h"
 
 /**
  * struct isci_request_status - This enum defines the possible states of an I/O
@@ -82,6 +83,151 @@ enum task_type {
        tmf_task = 1
 };
 
+enum sci_request_protocol {
+       SCIC_NO_PROTOCOL,
+       SCIC_SMP_PROTOCOL,
+       SCIC_SSP_PROTOCOL,
+       SCIC_STP_PROTOCOL
+}; /* XXX remove me, use sas_task.dev instead */;
+
+struct scic_sds_request {
+       /**
+        * This field contains the information for the base request state machine.
+        */
+       struct sci_base_state_machine state_machine;
+
+       /**
+        * This field simply points to the controller to which this IO request
+        * is associated.
+        */
+       struct scic_sds_controller *owning_controller;
+
+       /**
+        * This field simply points to the remote device to which this IO request
+        * is associated.
+        */
+       struct scic_sds_remote_device *target_device;
+
+       /**
+        * This field is utilized to determine if the SCI user is managing
+        * the IO tag for this request or if the core is managing it.
+        */
+       bool was_tag_assigned_by_user;
+
+       /**
+        * This field indicates the IO tag for this request.  The IO tag is
+        * comprised of the task_index and a sequence count. The sequence count
+        * is utilized to help identify tasks from one life to another.
+        */
+       u16 io_tag;
+
+       /**
+        * This field specifies the protocol being utilized for this
+        * IO request.
+        */
+       enum sci_request_protocol protocol;
+
+       /**
+        * This field indicates the completion status taken from the SCUs
+        * completion code.  It indicates the completion result for the SCU hardware.
+        */
+       u32 scu_status;
+
+       /**
+        * This field indicates the completion status returned to the SCI user.  It
+        * indicates the users view of the io request completion.
+        */
+       u32 sci_status;
+
+       /**
+        * This field contains the value to be utilized when posting (e.g. Post_TC,
+        * Post_TC_Abort) this request to the silicon.
+        */
+       u32 post_context;
+
+       struct scu_task_context *task_context_buffer;
+       struct scu_task_context tc ____cacheline_aligned;
+
+       /* could be larger with sg chaining */
+       #define SCU_SGL_SIZE ((SCU_IO_REQUEST_SGE_COUNT + 1) / 2)
+       struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32)));
+
+       /**
+        * This field indicates if this request is a task management request or
+        * normal IO request.
+        */
+       bool is_task_management_request;
+
+       /**
+        * This field indicates that this request contains an initialized started
+        * substate machine.
+        */
+       bool has_started_substate_machine;
+
+       /**
+        * This field is a pointer to the stored rx frame data.  It is used in STP
+        * internal requests and SMP response frames.  If this field is non-NULL the
+        * saved frame must be released on IO request completion.
+        *
+        * @todo In the future do we want to keep a list of RX frame buffers?
+        */
+       u32 saved_rx_frame_index;
+
+       /**
+        * This field specifies the data necessary to manage the sub-state
+        * machine executed while in the SCI_BASE_REQUEST_STATE_STARTED state.
+        */
+       struct sci_base_state_machine started_substate_machine;
+
+       /**
+        * This field specifies the current state handlers in place for this
+        * IO Request object.  This field is updated each time the request
+        * changes state.
+        */
+       const struct scic_sds_io_request_state_handler *state_handlers;
+
+       /**
+        * This field in the recorded device sequence for the io request.  This is
+        * recorded during the build operation and is compared in the start
+        * operation.  If the sequence is different then there was a change of
+        * devices from the build to start operations.
+        */
+       u8 device_sequence;
+
+       union {
+               struct {
+                       union {
+                               struct ssp_cmd_iu cmd;
+                               struct ssp_task_iu tmf;
+                       };
+                       union {
+                               struct ssp_response_iu rsp;
+                               u8 rsp_buf[SSP_RESP_IU_MAX_SIZE];
+                       };
+               } ssp;
+
+               struct {
+                       struct smp_req cmd;
+                       struct smp_resp rsp;
+               } smp;
+
+               struct {
+                       struct scic_sds_stp_request req;
+                       struct host_to_dev_fis cmd;
+                       struct dev_to_host_fis rsp;
+               } stp;
+       };
+
+};
+
+static inline struct scic_sds_request *to_sci_req(struct scic_sds_stp_request *stp_req)
+{
+       struct scic_sds_request *sci_req;
+
+       sci_req = container_of(stp_req, typeof(*sci_req), stp.req);
+       return sci_req;
+}
+
 struct isci_request {
        enum isci_request_status status;
        enum task_type ttype;
@@ -126,6 +272,273 @@ static inline struct isci_request *sci_req_to_ireq(struct scic_sds_request *sci_
 }
 
 /**
+ * enum sci_base_request_states - This enumeration depicts all the states for
+ *    the common request state machine.
+ *
+ *
+ */
+enum sci_base_request_states {
+       /**
+        * Simply the initial state for the base request state machine.
+        */
+       SCI_BASE_REQUEST_STATE_INITIAL,
+
+       /**
+        * This state indicates that the request has been constructed. This state
+        * is entered from the INITIAL state.
+        */
+       SCI_BASE_REQUEST_STATE_CONSTRUCTED,
+
+       /**
+        * This state indicates that the request has been started. This state is
+        * entered from the CONSTRUCTED state.
+        */
+       SCI_BASE_REQUEST_STATE_STARTED,
+
+       /**
+        * This state indicates that the request has completed.
+        * This state is entered from the STARTED state. This state is entered from
+        * the ABORTING state.
+        */
+       SCI_BASE_REQUEST_STATE_COMPLETED,
+
+       /**
+        * This state indicates that the request is in the process of being
+        * terminated/aborted.
+        * This state is entered from the CONSTRUCTED state.
+        * This state is entered from the STARTED state.
+        */
+       SCI_BASE_REQUEST_STATE_ABORTING,
+
+       /**
+        * Simply the final state for the base request state machine.
+        */
+       SCI_BASE_REQUEST_STATE_FINAL,
+};
+
+typedef enum sci_status (*scic_sds_io_request_handler_t)
+                               (struct scic_sds_request *request);
+typedef enum sci_status (*scic_sds_io_request_frame_handler_t)
+                               (struct scic_sds_request *req, u32 frame);
+typedef enum sci_status (*scic_sds_io_request_event_handler_t)
+                               (struct scic_sds_request *req, u32 event);
+typedef enum sci_status (*scic_sds_io_request_task_completion_handler_t)
+                               (struct scic_sds_request *req, u32 completion_code);
+
+/**
+ * struct scic_sds_io_request_state_handler - This is the SDS core definition
+ *    of the state handlers.
+ *
+ *
+ */
+struct scic_sds_io_request_state_handler {
+       /**
+        * The start_handler specifies the method invoked when a user attempts to
+        * start a request.
+        */
+       scic_sds_io_request_handler_t start_handler;
+
+       /**
+        * The abort_handler specifies the method invoked when a user attempts to
+        * abort a request.
+        */
+       scic_sds_io_request_handler_t abort_handler;
+
+       /**
+        * The complete_handler specifies the method invoked when a user attempts to
+        * complete a request.
+        */
+       scic_sds_io_request_handler_t complete_handler;
+
+       scic_sds_io_request_task_completion_handler_t tc_completion_handler;
+       scic_sds_io_request_event_handler_t event_handler;
+       scic_sds_io_request_frame_handler_t frame_handler;
+
+};
+
+extern const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[];
+
+/**
+ * scic_sds_request_get_controller() -
+ *
+ * This macro will return the controller for this io request object
+ */
+#define scic_sds_request_get_controller(sci_req) \
+       ((sci_req)->owning_controller)
+
+/**
+ * scic_sds_request_get_device() -
+ *
+ * This macro will return the device for this io request object
+ */
+#define scic_sds_request_get_device(sci_req) \
+       ((sci_req)->target_device)
+
+/**
+ * scic_sds_request_get_port() -
+ *
+ * This macro will return the port for this io request object
+ */
+#define scic_sds_request_get_port(sci_req)     \
+       scic_sds_remote_device_get_port(scic_sds_request_get_device(sci_req))
+
+/**
+ * scic_sds_request_get_post_context() -
+ *
+ * This macro returns the constructed post context result for the io request.
+ */
+#define scic_sds_request_get_post_context(sci_req)     \
+       ((sci_req)->post_context)
+
+/**
+ * scic_sds_request_get_task_context() -
+ *
+ * This is a helper macro to return the os handle for this request object.
+ */
+#define scic_sds_request_get_task_context(request) \
+       ((request)->task_context_buffer)
+
+/**
+ * scic_sds_request_set_status() -
+ *
+ * This macro will set the scu hardware status and sci request completion
+ * status for an io request.
+ */
+#define scic_sds_request_set_status(request, scu_status_code, sci_status_code) \
+       { \
+               (request)->scu_status = (scu_status_code); \
+               (request)->sci_status = (sci_status_code); \
+       }
+
+#define scic_sds_request_complete(a_request) \
+       ((a_request)->state_handlers->complete_handler(a_request))
+
+
+extern enum sci_status
+scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code);
+
+/**
+ * SCU_SGL_ZERO() -
+ *
+ * This macro zeros the hardware SGL element data
+ */
+#define SCU_SGL_ZERO(scu_sge) \
+       { \
+               (scu_sge).length = 0; \
+               (scu_sge).address_lower = 0; \
+               (scu_sge).address_upper = 0; \
+               (scu_sge).address_modifier = 0; \
+       }
+
+/**
+ * SCU_SGL_COPY() -
+ *
+ * This macro copys the SGL Element data from the host os to the hardware SGL
+ * elment data
+ */
+#define SCU_SGL_COPY(scu_sge, os_sge) \
+       { \
+               (scu_sge).length = sg_dma_len(sg); \
+               (scu_sge).address_upper = \
+                       upper_32_bits(sg_dma_address(sg)); \
+               (scu_sge).address_lower = \
+                       lower_32_bits(sg_dma_address(sg)); \
+               (scu_sge).address_modifier = 0; \
+       }
+
+void scic_sds_request_build_sgl(struct scic_sds_request *sci_req);
+void scic_sds_stp_request_assign_buffers(struct scic_sds_request *sci_req);
+void scic_sds_smp_request_assign_buffers(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_request_start(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_io_request_terminate(struct scic_sds_request *sci_req);
+void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_io_request_event_handler(struct scic_sds_request *sci_req,
+                                                 u32 event_code);
+enum sci_status scic_sds_io_request_frame_handler(struct scic_sds_request *sci_req,
+                                                 u32 frame_index);
+enum sci_status scic_sds_task_request_terminate(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_request_started_state_abort_handler(struct scic_sds_request *sci_req);
+
+/**
+ * enum _scic_sds_io_request_started_task_mgmt_substates - This enumeration
+ *    depicts all of the substates for a task management request to be
+ *    performed in the STARTED super-state.
+ *
+ *
+ */
+enum scic_sds_raw_request_started_task_mgmt_substates {
+       /**
+        * The AWAIT_TC_COMPLETION sub-state indicates that the started raw
+        * task management request is waiting for the transmission of the
+        * initial frame (i.e. command, task, etc.).
+        */
+       SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION,
+
+       /**
+        * This sub-state indicates that the started task management request
+        * is waiting for the reception of an unsolicited frame
+        * (i.e. response IU).
+        */
+       SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE,
+};
+
+
+/**
+ * enum _scic_sds_smp_request_started_substates - This enumeration depicts all
+ *    of the substates for a SMP request to be performed in the STARTED
+ *    super-state.
+ *
+ *
+ */
+enum scic_sds_smp_request_started_substates {
+       /**
+        * This sub-state indicates that the started task management request
+        * is waiting for the reception of an unsolicited frame
+        * (i.e. response IU).
+        */
+       SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE,
+
+       /**
+        * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is
+        * waiting for the transmission of the initial frame (i.e. command, task, etc.).
+        */
+       SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION,
+};
+
+
+
+/* XXX open code in caller */
+static inline void *scic_request_get_virt_addr(struct scic_sds_request *sci_req,
+                                              dma_addr_t phys_addr)
+{
+       struct isci_request *ireq = sci_req_to_ireq(sci_req);
+       dma_addr_t offset;
+
+       BUG_ON(phys_addr < ireq->request_daddr);
+
+       offset = phys_addr - ireq->request_daddr;
+
+       BUG_ON(offset >= sizeof(*ireq));
+
+       return (char *)ireq + offset;
+}
+
+/* XXX open code in caller */
+static inline dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sci_req,
+                                                     void *virt_addr)
+{
+       struct isci_request *ireq = sci_req_to_ireq(sci_req);
+
+       char *requested_addr = (char *)virt_addr;
+       char *base_addr = (char *)ireq;
+
+       BUG_ON(requested_addr < base_addr);
+       BUG_ON((requested_addr - base_addr) >= sizeof(*ireq));
+
+       return ireq->request_daddr + (requested_addr - base_addr);
+}
+
+/**
  * This function gets the status of the request object.
  * @request: This parameter points to the isci_request object
  *
@@ -337,12 +750,6 @@ static inline void isci_request_unmap_sgl(
        }
 }
 
-
-void isci_request_io_request_complete(
-       struct isci_host *isci_host,
-       struct isci_request *request,
-       enum sci_io_status completion_status);
-
 /**
  * isci_request_io_request_get_next_sge() - This function is called by the sci
  *    core to retrieve the next sge for a given request.
@@ -385,13 +792,16 @@ static inline void *isci_request_io_request_get_next_sge(
        return ret;
 }
 
-
-void isci_terminate_pending_requests(
-       struct isci_host *isci_host,
-       struct isci_remote_device *isci_device,
-       enum isci_request_status new_request_state);
-
-
-
-
+void isci_terminate_pending_requests(struct isci_host *isci_host,
+                                    struct isci_remote_device *isci_device,
+                                    enum isci_request_status new_request_state);
+enum sci_status scic_task_request_construct(struct scic_sds_controller *scic,
+                                           struct scic_sds_remote_device *sci_dev,
+                                           u16 io_tag,
+                                           struct scic_sds_request *sci_req);
+enum sci_status scic_task_request_construct_ssp(struct scic_sds_request *sci_req);
+enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req);
+enum sci_status scic_io_request_construct_smp(struct scic_sds_request *sci_req);
+void scic_stp_io_request_set_ncq_tag(struct scic_sds_request *sci_req, u16 ncq_tag);
+void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req);
 #endif /* !defined(_ISCI_REQUEST_H_) */
index 08dabf0..b9b9271 100644 (file)
@@ -56,8 +56,6 @@
 #include <scsi/sas.h>
 #include "isci.h"
 #include "remote_device.h"
-#include "scic_io_request.h"
-#include "scic_task_request.h"
 #include "task.h"
 #include "request.h"
 #include "sata.h"
similarity index 99%
rename from drivers/scsi/isci/core/scic_sds_smp_request.c
rename to drivers/scsi/isci/smp_request.c
index 6a2b65b..d4750a7 100644 (file)
@@ -56,9 +56,7 @@
 #include <scsi/sas.h>
 #include "state_machine.h"
 #include "remote_device.h"
-#include "scic_sds_request.h"
-#include "scic_sds_smp_request.h"
-#include "sci_util.h"
+#include "request.h"
 #include "scu_completion_codes.h"
 #include "scu_task_context.h"
 #include "host.h"
similarity index 99%
rename from drivers/scsi/isci/core/scic_sds_ssp_request.c
rename to drivers/scsi/isci/ssp_request.c
index 3fdf68b..4b6317a 100644 (file)
  */
 
 #include "host.h"
+#include "request.h"
 #include "state_machine.h"
-#include "scic_sds_request.h"
-#include "scu_completion_codes.h"
 #include "scu_task_context.h"
+#include "scu_completion_codes.h"
 
 /**
  * This method processes the completions transport layer (TL) status to
similarity index 99%
rename from drivers/scsi/isci/core/scic_sds_stp_request.c
rename to drivers/scsi/isci/stp_request.c
index 308f486..298086a 100644 (file)
 #include <scsi/sas.h>
 #include "sas.h"
 #include "state_machine.h"
-#include "scic_io_request.h"
 #include "remote_device.h"
-#include "scic_sds_request.h"
-#include "scic_sds_stp_pio_request.h"
-#include "scic_sds_stp_request.h"
+#include "stp_request.h"
 #include "unsolicited_frame_control.h"
-#include "sci_util.h"
 #include "scu_completion_codes.h"
 #include "scu_event_codes.h"
 #include "scu_task_context.h"
similarity index 77%
rename from drivers/scsi/isci/core/scic_sds_stp_request.h
rename to drivers/scsi/isci/stp_request.h
index f5434f1..eb14874 100644 (file)
@@ -152,27 +152,44 @@ enum scic_sds_stp_request_started_soft_reset_substates {
        SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE,
 };
 
-u32 scic_sds_stp_request_get_object_size(void);
-
-enum sci_status scic_sds_stp_pio_request_construct(
-       struct scic_sds_request *scic_io_request,
-       bool copy_rx_frame);
-
-enum sci_status scic_sds_stp_udma_request_construct(
-       struct scic_sds_request *sci_req,
-       u32 transfer_length,
-       enum dma_data_direction dir);
-
-enum sci_status scic_sds_stp_non_data_request_construct(
-       struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_stp_soft_reset_request_construct(
-       struct scic_sds_request *sci_req);
-
-enum sci_status scic_sds_stp_ncq_request_construct(
-       struct scic_sds_request *sci_req,
-       u32 transfer_length,
-       enum dma_data_direction dir);
-
+/* This is the enumeration of the SATA PIO DATA IN started substate machine. */
+enum _scic_sds_stp_request_started_pio_substates {
+       /**
+        * While in this state the IO request object is waiting for the TC completion
+        * notification for the H2D Register FIS
+        */
+       SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,
+
+       /**
+        * While in this state the IO request object is waiting for either a PIO Setup
+        * FIS or a D2H register FIS.  The type of frame received is based on the
+        * result of the prior frame and line conditions.
+        */
+       SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,
+
+       /**
+        * While in this state the IO request object is waiting for a DATA frame from
+        * the device.
+        */
+       SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,
+
+       /**
+        * While in this state the IO request object is waiting to transmit the next data
+        * frame to the device.
+        */
+       SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
+};
 
+struct scic_sds_request;
+
+enum sci_status scic_sds_stp_pio_request_construct(struct scic_sds_request *sci_req,
+                                                  bool copy_rx_frame);
+enum sci_status scic_sds_stp_udma_request_construct(struct scic_sds_request *sci_req,
+                                                   u32 transfer_length,
+                                                   enum dma_data_direction dir);
+enum sci_status scic_sds_stp_non_data_request_construct(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_stp_soft_reset_request_construct(struct scic_sds_request *sci_req);
+enum sci_status scic_sds_stp_ncq_request_construct(struct scic_sds_request *sci_req,
+                                                  u32 transfer_length,
+                                                  enum dma_data_direction dir);
 #endif /* _SCIC_SDS_STP_REQUEST_T_ */
index 2a86038..078e2ee 100644 (file)
 #include <linux/completion.h>
 #include <linux/irqflags.h>
 #include "sas.h"
-#include "scic_task_request.h"
-#include "scic_io_request.h"
 #include "remote_device.h"
 #include "remote_node_context.h"
 #include "isci.h"
 #include "request.h"
 #include "sata.h"
 #include "task.h"
-#include "scic_sds_request.h"
 #include "timers.h"
 
 /**
index 8d68dcc..12e6763 100644 (file)
@@ -56,7 +56,6 @@
 #include "host.h"
 #include "unsolicited_frame_control.h"
 #include "registers.h"
-#include "sci_util.h"
 
 /**
  * This method will program the unsolicited frames (UFs) into the UF address
@@ -93,10 +92,8 @@ static void scic_sds_unsolicited_frame_control_construct_frames(
        for (index = 0; index < unused_uf_header_entries; index++) {
                uf = &uf_control->buffers.array[index];
 
-               sci_cb_make_physical_address(
-                       uf_control->address_table.array[index], 0, 0
-                       );
                uf->buffer = NULL;
+               uf_control->address_table.array[index] = 0;
                uf->header = &uf_control->headers.array[index];
                uf->state  = UNSOLICITED_FRAME_EMPTY;
        }