isci: uplevel request infrastructure

* 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>

drivers/scsi/isci/Makefile

@@ -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

drivers/scsi/isci/core/sci_util.c

@@ -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);
-}

drivers/scsi/isci/core/sci_util.h

@@ -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_ */

drivers/scsi/isci/core/scic_io_request.h

@@ -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_ */
-

drivers/scsi/isci/core/scic_sds_phy.c

@@ -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"
 

drivers/scsi/isci/core/scic_sds_port.c

@@ -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)

drivers/scsi/isci/core/scic_sds_request.c

@@ -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;
-}

drivers/scsi/isci/core/scic_sds_request.h

@@ -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_ */

drivers/scsi/isci/core/scic_sds_smp_request.h

@@ -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_ */
-

drivers/scsi/isci/core/scic_sds_stp_packet_request.h

@@ -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_ */
-

drivers/scsi/isci/core/scic_sds_stp_pio_request.h

@@ -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_ */

drivers/scsi/isci/core/scic_task_request.h

@@ -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_ */
-

drivers/scsi/isci/host.c

@@ -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"

drivers/scsi/isci/isci.h

@@ -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;

drivers/scsi/isci/port.c

@@ -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"

drivers/scsi/isci/remote_device.c

@@ -57,14 +57,11 @@
 #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"
 

drivers/scsi/isci/remote_node_context.c

@@ -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"
 

drivers/scsi/isci/remote_node_table.c

@@ -59,7 +59,6 @@
  *
  *
  */
-#include "sci_util.h"
 #include "remote_node_table.h"
 #include "remote_node_context.h"
 

drivers/scsi/isci/request.h

@@ -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;
@@ -125,6 +271,273 @@ static inline struct isci_request *sci_req_to_ireq(struct scic_sds_request *sci_
 	return ireq;
 }
 
+/**
+ * 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_) */

drivers/scsi/isci/sata.c

@@ -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"

drivers/scsi/isci/core/scic_sds_smp_request.c → drivers/scsi/isci/smp_request.c

@@ -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"

drivers/scsi/isci/core/scic_sds_ssp_request.c → drivers/scsi/isci/ssp_request.c

@@ -54,10 +54,10 @@
  */
 
 #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

drivers/scsi/isci/core/scic_sds_stp_request.c → drivers/scsi/isci/stp_request.c

@@ -56,13 +56,9 @@
 #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"

drivers/scsi/isci/core/scic_sds_stp_request.h → drivers/scsi/isci/stp_request.h

@@ -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_ */

drivers/scsi/isci/task.c

@@ -56,15 +56,12 @@
 #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"
 
 /**

drivers/scsi/isci/unsolicited_frame_control.c

@@ -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;
 	}