From f1f52e75939b56c40b3d153ae99faf2720250242 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 10 May 2011 02:28:45 -0700 Subject: [PATCH] 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 Signed-off-by: Dan Williams --- drivers/scsi/isci/Makefile | 8 +- drivers/scsi/isci/core/sci_util.c | 86 - drivers/scsi/isci/core/sci_util.h | 97 - drivers/scsi/isci/core/scic_io_request.h | 226 -- drivers/scsi/isci/core/scic_sds_phy.c | 1 - drivers/scsi/isci/core/scic_sds_port.c | 2 +- drivers/scsi/isci/core/scic_sds_request.c | 1523 ------------ drivers/scsi/isci/core/scic_sds_request.h | 491 ---- drivers/scsi/isci/core/scic_sds_smp_request.h | 67 - .../isci/core/scic_sds_stp_packet_request.h | 113 - .../scsi/isci/core/scic_sds_stp_pio_request.h | 104 - drivers/scsi/isci/core/scic_task_request.h | 104 - drivers/scsi/isci/host.c | 2 - drivers/scsi/isci/isci.h | 19 + drivers/scsi/isci/port.c | 1 - drivers/scsi/isci/remote_device.c | 3 - drivers/scsi/isci/remote_node_context.c | 1 - drivers/scsi/isci/remote_node_table.c | 1 - drivers/scsi/isci/request.c | 2112 ++++++++++++++--- drivers/scsi/isci/request.h | 442 +++- drivers/scsi/isci/sata.c | 2 - .../scic_sds_smp_request.c => smp_request.c} | 4 +- .../scic_sds_ssp_request.c => ssp_request.c} | 4 +- .../scic_sds_stp_request.c => stp_request.c} | 6 +- .../scic_sds_stp_request.h => stp_request.h} | 53 +- drivers/scsi/isci/task.c | 3 - drivers/scsi/isci/unsolicited_frame_control.c | 5 +- 27 files changed, 2238 insertions(+), 3242 deletions(-) delete mode 100644 drivers/scsi/isci/core/sci_util.c delete mode 100644 drivers/scsi/isci/core/sci_util.h delete mode 100644 drivers/scsi/isci/core/scic_io_request.h delete mode 100644 drivers/scsi/isci/core/scic_sds_request.c delete mode 100644 drivers/scsi/isci/core/scic_sds_request.h delete mode 100644 drivers/scsi/isci/core/scic_sds_smp_request.h delete mode 100644 drivers/scsi/isci/core/scic_sds_stp_packet_request.h delete mode 100644 drivers/scsi/isci/core/scic_sds_stp_pio_request.h delete mode 100644 drivers/scsi/isci/core/scic_task_request.h rename drivers/scsi/isci/{core/scic_sds_smp_request.c => smp_request.c} (99%) rename drivers/scsi/isci/{core/scic_sds_ssp_request.c => ssp_request.c} (99%) rename drivers/scsi/isci/{core/scic_sds_stp_request.c => stp_request.c} (99%) rename drivers/scsi/isci/{core/scic_sds_stp_request.h => stp_request.h} (77%) diff --git a/drivers/scsi/isci/Makefile b/drivers/scsi/isci/Makefile index cfc640f9dc3f..a7d1eb33eca2 100644 --- a/drivers/scsi/isci/Makefile +++ b/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 diff --git a/drivers/scsi/isci/core/sci_util.c b/drivers/scsi/isci/core/sci_util.c deleted file mode 100644 index 595d8da1abba..000000000000 --- a/drivers/scsi/isci/core/sci_util.c +++ /dev/null @@ -1,86 +0,0 @@ -/* - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * BSD LICENSE - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include -#include "sci_util.h" -#include "request.h" - -void *scic_request_get_virt_addr(struct scic_sds_request *sci_req, dma_addr_t phys_addr) -{ - struct isci_request *ireq = sci_req_to_ireq(sci_req); - dma_addr_t offset; - - BUG_ON(phys_addr < ireq->request_daddr); - - offset = phys_addr - ireq->request_daddr; - - BUG_ON(offset >= sizeof(*ireq)); - - return (char *)ireq + offset; -} - -dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request, - void *virt_addr) -{ - struct isci_request *isci_request = sci_req_to_ireq(sds_request); - - char *requested_addr = (char *)virt_addr; - char *base_addr = (char *)isci_request; - - BUG_ON(requested_addr < base_addr); - BUG_ON((requested_addr - base_addr) >= sizeof(*isci_request)); - - return isci_request->request_daddr + (requested_addr - base_addr); -} diff --git a/drivers/scsi/isci/core/sci_util.h b/drivers/scsi/isci/core/sci_util.h deleted file mode 100644 index 0f9dd0fe1266..000000000000 --- a/drivers/scsi/isci/core/sci_util.h +++ /dev/null @@ -1,97 +0,0 @@ -/* - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * BSD LICENSE - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef _SCI_UTIL_H_ -#define _SCI_UTIL_H_ - -#include "scic_sds_request.h" - -#define SCIC_BUILD_DWORD(char_buffer) \ - (\ - ((char_buffer)[0] << 24) \ - | ((char_buffer)[1] << 16) \ - | ((char_buffer)[2] << 8) \ - | ((char_buffer)[3]) \ - ) - -#define sci_cb_make_physical_address(physical_addr, addr_upper, addr_lower) \ - ((physical_addr) = (addr_lower) | ((u64)addr_upper) << 32) - -/** - * sci_swab32_cpy - convert between scsi and scu-hardware byte format - * @dest: receive the 4-byte endian swapped version of src - * @src: word aligned source buffer - * - * scu hardware handles SSP/SMP control, response, and unidentified - * frames in "big endian dword" order. Regardless of host endian this - * is always a swab32()-per-dword conversion of the standard definition, - * i.e. single byte fields swapped and multi-byte fields in little- - * endian - */ -static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt) -{ - u32 *dest = _dest, *src = _src; - - while (--word_cnt >= 0) - dest[word_cnt] = swab32(src[word_cnt]); -} - -void *scic_request_get_virt_addr(struct scic_sds_request *sds_request, - dma_addr_t phys_addr); - -dma_addr_t scic_io_request_get_dma_addr(struct scic_sds_request *sds_request, - void *virt_addr); - -#endif /* _SCI_UTIL_H_ */ diff --git a/drivers/scsi/isci/core/scic_io_request.h b/drivers/scsi/isci/core/scic_io_request.h deleted file mode 100644 index a4664cc3c576..000000000000 --- a/drivers/scsi/isci/core/scic_io_request.h +++ /dev/null @@ -1,226 +0,0 @@ -/* - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * BSD LICENSE - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef _SCIC_IO_REQUEST_H_ -#define _SCIC_IO_REQUEST_H_ - -#include - -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_ */ - diff --git a/drivers/scsi/isci/core/scic_sds_phy.c b/drivers/scsi/isci/core/scic_sds_phy.c index 6b49d94bc9cc..150509b0c69e 100644 --- a/drivers/scsi/isci/core/scic_sds_phy.c +++ b/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" diff --git a/drivers/scsi/isci/core/scic_sds_port.c b/drivers/scsi/isci/core/scic_sds_port.c index 652917eeead4..a9f3ce111b86 100644 --- a/drivers/scsi/isci/core/scic_sds_port.c +++ b/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) diff --git a/drivers/scsi/isci/core/scic_sds_request.c b/drivers/scsi/isci/core/scic_sds_request.c deleted file mode 100644 index cd279601de01..000000000000 --- a/drivers/scsi/isci/core/scic_sds_request.c +++ /dev/null @@ -1,1523 +0,0 @@ -/* - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * BSD LICENSE - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include -#include "scic_io_request.h" -#include "registers.h" -#include "scic_sds_port.h" -#include "remote_device.h" -#include "scic_sds_request.h" -#include "scic_sds_smp_request.h" -#include "scic_sds_stp_request.h" -#include "unsolicited_frame_control.h" -#include "sci_util.h" -#include "scu_completion_codes.h" -#include "scu_task_context.h" -#include "request.h" -#include "task.h" - -/* - * **************************************************************************** - * * SCIC SDS IO REQUEST CONSTANTS - * **************************************************************************** */ - -/** - * - * - * We have no timer requirements for IO requests right now - */ -#define SCIC_SDS_IO_REQUEST_MINIMUM_TIMER_COUNT (0) -#define SCIC_SDS_IO_REQUEST_MAXIMUM_TIMER_COUNT (0) - -/** - * This method returns the sgl element pair for the specificed sgl_pair index. - * @sci_req: This parameter specifies the IO request for which to retrieve - * the Scatter-Gather List element pair. - * @sgl_pair_index: This parameter specifies the index into the SGL element - * pair to be retrieved. - * - * This method returns a pointer to an struct scu_sgl_element_pair. - */ -static struct scu_sgl_element_pair *scic_sds_request_get_sgl_element_pair( - struct scic_sds_request *sci_req, - u32 sgl_pair_index - ) { - struct scu_task_context *task_context; - - task_context = (struct scu_task_context *)sci_req->task_context_buffer; - - if (sgl_pair_index == 0) { - return &task_context->sgl_pair_ab; - } else if (sgl_pair_index == 1) { - return &task_context->sgl_pair_cd; - } - - return &sci_req->sg_table[sgl_pair_index - 2]; -} - -/** - * This function will build the SGL list for an IO request. - * @sci_req: This parameter specifies the IO request for which to build - * the Scatter-Gather List. - * - */ -void scic_sds_request_build_sgl(struct scic_sds_request *sds_request) -{ - struct isci_request *isci_request = sci_req_to_ireq(sds_request); - struct isci_host *isci_host = isci_request->isci_host; - struct sas_task *task = isci_request_access_task(isci_request); - struct scatterlist *sg = NULL; - dma_addr_t dma_addr; - u32 sg_idx = 0; - struct scu_sgl_element_pair *scu_sg = NULL; - struct scu_sgl_element_pair *prev_sg = NULL; - - if (task->num_scatter > 0) { - sg = task->scatter; - - while (sg) { - scu_sg = scic_sds_request_get_sgl_element_pair( - sds_request, - sg_idx); - - SCU_SGL_COPY(scu_sg->A, sg); - - sg = sg_next(sg); - - if (sg) { - SCU_SGL_COPY(scu_sg->B, sg); - sg = sg_next(sg); - } else - SCU_SGL_ZERO(scu_sg->B); - - if (prev_sg) { - dma_addr = - scic_io_request_get_dma_addr( - sds_request, - scu_sg); - - prev_sg->next_pair_upper = - upper_32_bits(dma_addr); - prev_sg->next_pair_lower = - lower_32_bits(dma_addr); - } - - prev_sg = scu_sg; - sg_idx++; - } - } else { /* handle when no sg */ - scu_sg = scic_sds_request_get_sgl_element_pair(sds_request, - sg_idx); - - dma_addr = dma_map_single(&isci_host->pdev->dev, - task->scatter, - task->total_xfer_len, - task->data_dir); - - isci_request->zero_scatter_daddr = dma_addr; - - scu_sg->A.length = task->total_xfer_len; - scu_sg->A.address_upper = upper_32_bits(dma_addr); - scu_sg->A.address_lower = lower_32_bits(dma_addr); - } - - if (scu_sg) { - scu_sg->next_pair_upper = 0; - scu_sg->next_pair_lower = 0; - } -} - -static void scic_sds_ssp_io_request_assign_buffers(struct scic_sds_request *sci_req) -{ - if (sci_req->was_tag_assigned_by_user == false) - sci_req->task_context_buffer = &sci_req->tc; -} - -static void scic_sds_io_request_build_ssp_command_iu(struct scic_sds_request *sci_req) -{ - struct ssp_cmd_iu *cmd_iu; - struct isci_request *ireq = sci_req_to_ireq(sci_req); - struct sas_task *task = isci_request_access_task(ireq); - - cmd_iu = &sci_req->ssp.cmd; - - memcpy(cmd_iu->LUN, task->ssp_task.LUN, 8); - cmd_iu->add_cdb_len = 0; - cmd_iu->_r_a = 0; - cmd_iu->_r_b = 0; - cmd_iu->en_fburst = 0; /* unsupported */ - cmd_iu->task_prio = task->ssp_task.task_prio; - cmd_iu->task_attr = task->ssp_task.task_attr; - cmd_iu->_r_c = 0; - - sci_swab32_cpy(&cmd_iu->cdb, task->ssp_task.cdb, - sizeof(task->ssp_task.cdb) / sizeof(u32)); -} - -static void scic_sds_task_request_build_ssp_task_iu(struct scic_sds_request *sci_req) -{ - struct ssp_task_iu *task_iu; - struct isci_request *ireq = sci_req_to_ireq(sci_req); - struct sas_task *task = isci_request_access_task(ireq); - struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq); - - task_iu = &sci_req->ssp.tmf; - - memset(task_iu, 0, sizeof(struct ssp_task_iu)); - - memcpy(task_iu->LUN, task->ssp_task.LUN, 8); - - task_iu->task_func = isci_tmf->tmf_code; - task_iu->task_tag = - (ireq->ttype == tmf_task) ? - isci_tmf->io_tag : - SCI_CONTROLLER_INVALID_IO_TAG; -} - -/** - * This method is will fill in the SCU Task Context for any type of SSP request. - * @sci_req: - * @task_context: - * - */ -static void scu_ssp_reqeust_construct_task_context( - struct scic_sds_request *sds_request, - struct scu_task_context *task_context) -{ - dma_addr_t dma_addr; - struct scic_sds_controller *controller; - struct scic_sds_remote_device *target_device; - struct scic_sds_port *target_port; - - controller = scic_sds_request_get_controller(sds_request); - target_device = scic_sds_request_get_device(sds_request); - target_port = scic_sds_request_get_port(sds_request); - - /* Fill in the TC with the its required data */ - task_context->abort = 0; - task_context->priority = 0; - task_context->initiator_request = 1; - task_context->connection_rate = target_device->connection_rate; - task_context->protocol_engine_index = - scic_sds_controller_get_protocol_engine_group(controller); - task_context->logical_port_index = - scic_sds_port_get_index(target_port); - task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP; - task_context->valid = SCU_TASK_CONTEXT_VALID; - task_context->context_type = SCU_TASK_CONTEXT_TYPE; - - task_context->remote_node_index = - scic_sds_remote_device_get_index(sds_request->target_device); - task_context->command_code = 0; - - task_context->link_layer_control = 0; - task_context->do_not_dma_ssp_good_response = 1; - task_context->strict_ordering = 0; - task_context->control_frame = 0; - task_context->timeout_enable = 0; - task_context->block_guard_enable = 0; - - task_context->address_modifier = 0; - - /* task_context->type.ssp.tag = sci_req->io_tag; */ - task_context->task_phase = 0x01; - - if (sds_request->was_tag_assigned_by_user) { - /* - * Build the task context now since we have already read - * the data - */ - sds_request->post_context = - (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | - (scic_sds_controller_get_protocol_engine_group( - controller) << - SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) | - (scic_sds_port_get_index(target_port) << - SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) | - scic_sds_io_tag_get_index(sds_request->io_tag)); - } else { - /* - * Build the task context now since we have already read - * the data - * - * I/O tag index is not assigned because we have to wait - * until we get a TCi - */ - sds_request->post_context = - (SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC | - (scic_sds_controller_get_protocol_engine_group( - owning_controller) << - SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) | - (scic_sds_port_get_index(target_port) << - SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT)); - } - - /* - * Copy the physical address for the command buffer to the - * SCU Task Context - */ - dma_addr = scic_io_request_get_dma_addr(sds_request, - &sds_request->ssp.cmd); - - task_context->command_iu_upper = upper_32_bits(dma_addr); - task_context->command_iu_lower = lower_32_bits(dma_addr); - - /* - * Copy the physical address for the response buffer to the - * SCU Task Context - */ - dma_addr = scic_io_request_get_dma_addr(sds_request, - &sds_request->ssp.rsp); - - task_context->response_iu_upper = upper_32_bits(dma_addr); - task_context->response_iu_lower = lower_32_bits(dma_addr); -} - -/** - * This method is will fill in the SCU Task Context for a SSP IO request. - * @sci_req: - * - */ -static void scu_ssp_io_request_construct_task_context( - struct scic_sds_request *sci_req, - enum dma_data_direction dir, - u32 len) -{ - struct scu_task_context *task_context; - - task_context = scic_sds_request_get_task_context(sci_req); - - scu_ssp_reqeust_construct_task_context(sci_req, task_context); - - task_context->ssp_command_iu_length = - sizeof(struct ssp_cmd_iu) / sizeof(u32); - task_context->type.ssp.frame_type = SSP_COMMAND; - - switch (dir) { - case DMA_FROM_DEVICE: - case DMA_NONE: - default: - task_context->task_type = SCU_TASK_TYPE_IOREAD; - break; - case DMA_TO_DEVICE: - task_context->task_type = SCU_TASK_TYPE_IOWRITE; - break; - } - - task_context->transfer_length_bytes = len; - - if (task_context->transfer_length_bytes > 0) - scic_sds_request_build_sgl(sci_req); -} - -static void scic_sds_ssp_task_request_assign_buffers(struct scic_sds_request *sci_req) -{ - if (sci_req->was_tag_assigned_by_user == false) - sci_req->task_context_buffer = &sci_req->tc; -} - -/** - * This method will fill in the SCU Task Context for a SSP Task request. The - * following important settings are utilized: -# priority == - * SCU_TASK_PRIORITY_HIGH. This ensures that the task request is issued - * ahead of other task destined for the same Remote Node. -# task_type == - * SCU_TASK_TYPE_IOREAD. This simply indicates that a normal request type - * (i.e. non-raw frame) is being utilized to perform task management. -# - * control_frame == 1. This ensures that the proper endianess is set so - * that the bytes are transmitted in the right order for a task frame. - * @sci_req: This parameter specifies the task request object being - * constructed. - * - */ -static void scu_ssp_task_request_construct_task_context( - struct scic_sds_request *sci_req) -{ - struct scu_task_context *task_context; - - task_context = scic_sds_request_get_task_context(sci_req); - - scu_ssp_reqeust_construct_task_context(sci_req, task_context); - - task_context->control_frame = 1; - task_context->priority = SCU_TASK_PRIORITY_HIGH; - task_context->task_type = SCU_TASK_TYPE_RAW_FRAME; - task_context->transfer_length_bytes = 0; - task_context->type.ssp.frame_type = SSP_TASK; - task_context->ssp_command_iu_length = - sizeof(struct ssp_task_iu) / sizeof(u32); -} - - -/** - * This method constructs the SSP Command IU data for this ssp passthrough - * comand request object. - * @sci_req: This parameter specifies the request object for which the SSP - * command information unit is being built. - * - * enum sci_status, returns invalid parameter is cdb > 16 - */ - - -/** - * This method constructs the SATA request object. - * @sci_req: - * @sat_protocol: - * @transfer_length: - * @data_direction: - * @copy_rx_frame: - * - * enum sci_status - */ -static enum sci_status -scic_io_request_construct_sata(struct scic_sds_request *sci_req, - u32 len, - enum dma_data_direction dir, - bool copy) -{ - enum sci_status status = SCI_SUCCESS; - struct isci_request *ireq = sci_req_to_ireq(sci_req); - struct sas_task *task = isci_request_access_task(ireq); - - /* check for management protocols */ - if (ireq->ttype == tmf_task) { - struct isci_tmf *tmf = isci_request_access_tmf(ireq); - - if (tmf->tmf_code == isci_tmf_sata_srst_high || - tmf->tmf_code == isci_tmf_sata_srst_low) - return scic_sds_stp_soft_reset_request_construct(sci_req); - else { - dev_err(scic_to_dev(sci_req->owning_controller), - "%s: Request 0x%p received un-handled SAT " - "management protocol 0x%x.\n", - __func__, sci_req, tmf->tmf_code); - - return SCI_FAILURE; - } - } - - if (!sas_protocol_ata(task->task_proto)) { - dev_err(scic_to_dev(sci_req->owning_controller), - "%s: Non-ATA protocol in SATA path: 0x%x\n", - __func__, - task->task_proto); - return SCI_FAILURE; - - } - - /* non data */ - if (task->data_dir == DMA_NONE) - return scic_sds_stp_non_data_request_construct(sci_req); - - /* NCQ */ - if (task->ata_task.use_ncq) - return scic_sds_stp_ncq_request_construct(sci_req, len, dir); - - /* DMA */ - if (task->ata_task.dma_xfer) - return scic_sds_stp_udma_request_construct(sci_req, len, dir); - else /* PIO */ - return scic_sds_stp_pio_request_construct(sci_req, copy); - - return status; -} - -enum sci_status scic_io_request_construct_basic_ssp( - struct scic_sds_request *sci_req) -{ - struct isci_request *ireq = sci_req_to_ireq(sci_req); - struct sas_task *task = isci_request_access_task(ireq); - - sci_req->protocol = SCIC_SSP_PROTOCOL; - - scu_ssp_io_request_construct_task_context(sci_req, - task->data_dir, - task->total_xfer_len); - - scic_sds_io_request_build_ssp_command_iu(sci_req); - - sci_base_state_machine_change_state( - &sci_req->state_machine, - SCI_BASE_REQUEST_STATE_CONSTRUCTED); - - return SCI_SUCCESS; -} - - -enum sci_status scic_task_request_construct_ssp( - struct scic_sds_request *sci_req) -{ - /* Construct the SSP Task SCU Task Context */ - scu_ssp_task_request_construct_task_context(sci_req); - - /* Fill in the SSP Task IU */ - scic_sds_task_request_build_ssp_task_iu(sci_req); - - sci_base_state_machine_change_state(&sci_req->state_machine, - SCI_BASE_REQUEST_STATE_CONSTRUCTED); - - return SCI_SUCCESS; -} - - -enum sci_status scic_io_request_construct_basic_sata( - struct scic_sds_request *sci_req) -{ - enum sci_status status; - struct scic_sds_stp_request *stp_req; - bool copy = false; - struct isci_request *isci_request = sci_req_to_ireq(sci_req); - struct sas_task *task = isci_request_access_task(isci_request); - - stp_req = &sci_req->stp.req; - sci_req->protocol = SCIC_STP_PROTOCOL; - - copy = (task->data_dir == DMA_NONE) ? false : true; - - status = scic_io_request_construct_sata(sci_req, - task->total_xfer_len, - task->data_dir, - copy); - - if (status == SCI_SUCCESS) - sci_base_state_machine_change_state(&sci_req->state_machine, - SCI_BASE_REQUEST_STATE_CONSTRUCTED); - - return status; -} - - -enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req) -{ - enum sci_status status = SCI_SUCCESS; - struct isci_request *ireq = sci_req_to_ireq(sci_req); - - /* check for management protocols */ - if (ireq->ttype == tmf_task) { - struct isci_tmf *tmf = isci_request_access_tmf(ireq); - - if (tmf->tmf_code == isci_tmf_sata_srst_high || - tmf->tmf_code == isci_tmf_sata_srst_low) { - status = scic_sds_stp_soft_reset_request_construct(sci_req); - } else { - dev_err(scic_to_dev(sci_req->owning_controller), - "%s: Request 0x%p received un-handled SAT " - "Protocol 0x%x.\n", - __func__, sci_req, tmf->tmf_code); - - return SCI_FAILURE; - } - } - - if (status == SCI_SUCCESS) - sci_base_state_machine_change_state( - &sci_req->state_machine, - SCI_BASE_REQUEST_STATE_CONSTRUCTED); - - return status; -} - - -u16 scic_io_request_get_io_tag( - struct scic_sds_request *sci_req) -{ - return sci_req->io_tag; -} - - -u32 scic_request_get_controller_status( - struct scic_sds_request *sci_req) -{ - return sci_req->scu_status; -} - -#define SCU_TASK_CONTEXT_SRAM 0x200000 -u32 scic_io_request_get_number_of_bytes_transferred( - struct scic_sds_request *scic_sds_request) -{ - struct scic_sds_controller *scic = scic_sds_request->owning_controller; - u32 ret_val = 0; - - if (readl(&scic->smu_registers->address_modifier) == 0) { - void __iomem *scu_reg_base = scic->scu_registers; - /* - * get the bytes of data from the Address == BAR1 + 20002Ch + (256*TCi) where - * BAR1 is the scu_registers - * 0x20002C = 0x200000 + 0x2c - * = start of task context SRAM + offset of (type.ssp.data_offset) - * TCi is the io_tag of struct scic_sds_request */ - ret_val = readl(scu_reg_base + - (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) + - ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(scic_sds_request->io_tag))); - } - - return ret_val; -} - - -/* - * **************************************************************************** - * * SCIC SDS Interface Implementation - * **************************************************************************** */ - -enum sci_status -scic_sds_request_start(struct scic_sds_request *request) -{ - if (request->device_sequence != - scic_sds_remote_device_get_sequence(request->target_device)) - return SCI_FAILURE; - - if (request->state_handlers->start_handler) - return request->state_handlers->start_handler(request); - - dev_warn(scic_to_dev(request->owning_controller), - "%s: SCIC IO Request requested to start while in wrong " - "state %d\n", - __func__, - sci_base_state_machine_get_state(&request->state_machine)); - - return SCI_FAILURE_INVALID_STATE; -} - -enum sci_status -scic_sds_io_request_terminate(struct scic_sds_request *request) -{ - if (request->state_handlers->abort_handler) - return request->state_handlers->abort_handler(request); - - dev_warn(scic_to_dev(request->owning_controller), - "%s: SCIC IO Request requested to abort while in wrong " - "state %d\n", - __func__, - sci_base_state_machine_get_state(&request->state_machine)); - - return SCI_FAILURE_INVALID_STATE; -} - -enum sci_status -scic_sds_io_request_complete(struct scic_sds_request *request) -{ - if (request->state_handlers->complete_handler) - return request->state_handlers->complete_handler(request); - - dev_warn(scic_to_dev(request->owning_controller), - "%s: SCIC IO Request requested to complete while in wrong " - "state %d\n", - __func__, - sci_base_state_machine_get_state(&request->state_machine)); - - return SCI_FAILURE_INVALID_STATE; -} - -enum sci_status scic_sds_io_request_event_handler( - struct scic_sds_request *request, - u32 event_code) -{ - if (request->state_handlers->event_handler) - return request->state_handlers->event_handler(request, event_code); - - dev_warn(scic_to_dev(request->owning_controller), - "%s: SCIC IO Request given event code notification %x while " - "in wrong state %d\n", - __func__, - event_code, - sci_base_state_machine_get_state(&request->state_machine)); - - return SCI_FAILURE_INVALID_STATE; -} - -enum sci_status -scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code) -{ - if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED && - request->has_started_substate_machine == false) - return scic_sds_request_started_state_tc_completion_handler(request, completion_code); - else if (request->state_handlers->tc_completion_handler) - return request->state_handlers->tc_completion_handler(request, completion_code); - - dev_warn(scic_to_dev(request->owning_controller), - "%s: SCIC IO Request given task completion notification %x " - "while in wrong state %d\n", - __func__, - completion_code, - sci_base_state_machine_get_state(&request->state_machine)); - - return SCI_FAILURE_INVALID_STATE; - -} - - -/** - * - * @sci_req: The SCIC_SDS_IO_REQUEST_T object for which the start - * operation is to be executed. - * @frame_index: The frame index returned by the hardware for the reqeust - * object. - * - * This method invokes the core state frame handler for the - * SCIC_SDS_IO_REQUEST_T object. enum sci_status - */ -enum sci_status scic_sds_io_request_frame_handler( - struct scic_sds_request *request, - u32 frame_index) -{ - if (request->state_handlers->frame_handler) - return request->state_handlers->frame_handler(request, frame_index); - - dev_warn(scic_to_dev(request->owning_controller), - "%s: SCIC IO Request given unexpected frame %x while in " - "state %d\n", - __func__, - frame_index, - sci_base_state_machine_get_state(&request->state_machine)); - - scic_sds_controller_release_frame(request->owning_controller, frame_index); - return SCI_FAILURE_INVALID_STATE; -} - -/* - * This function copies response data for requests returning response data - * instead of sense data. - * @sci_req: This parameter specifies the request object for which to copy - * the response data. - */ -void scic_sds_io_request_copy_response(struct scic_sds_request *sci_req) -{ - void *resp_buf; - u32 len; - struct ssp_response_iu *ssp_response; - struct isci_request *ireq = sci_req_to_ireq(sci_req); - struct isci_tmf *isci_tmf = isci_request_access_tmf(ireq); - - ssp_response = &sci_req->ssp.rsp; - - resp_buf = &isci_tmf->resp.resp_iu; - - len = min_t(u32, - SSP_RESP_IU_MAX_SIZE, - be32_to_cpu(ssp_response->response_data_len)); - - memcpy(resp_buf, ssp_response->resp_data, len); -} - -/* - * ***************************************************************************** - * * CONSTRUCTED STATE HANDLERS - * ***************************************************************************** */ - -/* - * This method implements the action taken when a constructed - * SCIC_SDS_IO_REQUEST_T object receives a scic_sds_request_start() request. - * This method will, if necessary, allocate a TCi for the io request object and - * then will, if necessary, copy the constructed TC data into the actual TC - * buffer. If everything is successful the post context field is updated with - * the TCi so the controller can post the request to the hardware. enum sci_status - * SCI_SUCCESS SCI_FAILURE_INSUFFICIENT_RESOURCES - */ -static enum sci_status scic_sds_request_constructed_state_start_handler( - struct scic_sds_request *request) -{ - struct scu_task_context *task_context; - - if (request->io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { - request->io_tag = - scic_controller_allocate_io_tag(request->owning_controller); - } - - /* Record the IO Tag in the request */ - if (request->io_tag != SCI_CONTROLLER_INVALID_IO_TAG) { - task_context = request->task_context_buffer; - - task_context->task_index = scic_sds_io_tag_get_index(request->io_tag); - - switch (task_context->protocol_type) { - case SCU_TASK_CONTEXT_PROTOCOL_SMP: - case SCU_TASK_CONTEXT_PROTOCOL_SSP: - /* SSP/SMP Frame */ - task_context->type.ssp.tag = request->io_tag; - task_context->type.ssp.target_port_transfer_tag = 0xFFFF; - break; - - case SCU_TASK_CONTEXT_PROTOCOL_STP: - /* - * STP/SATA Frame - * task_context->type.stp.ncq_tag = request->ncq_tag; */ - break; - - case SCU_TASK_CONTEXT_PROTOCOL_NONE: - /* / @todo When do we set no protocol type? */ - break; - - default: - /* This should never happen since we build the IO requests */ - break; - } - - /* - * Check to see if we need to copy the task context buffer - * or have been building into the task context buffer */ - if (request->was_tag_assigned_by_user == false) { - scic_sds_controller_copy_task_context( - request->owning_controller, request); - } - - /* Add to the post_context the io tag value */ - request->post_context |= scic_sds_io_tag_get_index(request->io_tag); - - /* Everything is good go ahead and change state */ - sci_base_state_machine_change_state(&request->state_machine, - SCI_BASE_REQUEST_STATE_STARTED); - - return SCI_SUCCESS; - } - - return SCI_FAILURE_INSUFFICIENT_RESOURCES; -} - -/* - * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_terminate() request. Since the request - * has not yet been posted to the hardware the request transitions to the - * completed state. enum sci_status SCI_SUCCESS - */ -static enum sci_status scic_sds_request_constructed_state_abort_handler( - struct scic_sds_request *request) -{ - /* - * This request has been terminated by the user make sure that the correct - * status code is returned */ - scic_sds_request_set_status(request, - SCU_TASK_DONE_TASK_ABORT, - SCI_FAILURE_IO_TERMINATED); - - sci_base_state_machine_change_state(&request->state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED); - return SCI_SUCCESS; -} - -/* - * ***************************************************************************** - * * STARTED STATE HANDLERS - * ***************************************************************************** */ - -/* - * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_terminate() request. Since the request - * has been posted to the hardware the io request state is changed to the - * aborting state. enum sci_status SCI_SUCCESS - */ -enum sci_status scic_sds_request_started_state_abort_handler( - struct scic_sds_request *request) -{ - if (request->has_started_substate_machine) - sci_base_state_machine_stop(&request->started_substate_machine); - - sci_base_state_machine_change_state(&request->state_machine, - SCI_BASE_REQUEST_STATE_ABORTING); - return SCI_SUCCESS; -} - -/* - * scic_sds_request_started_state_tc_completion_handler() - This method process - * TC (task context) completions for normal IO request (i.e. Task/Abort - * Completions of type 0). This method will update the - * SCIC_SDS_IO_REQUEST_T::status field. - * @sci_req: This parameter specifies the request for which a completion - * occurred. - * @completion_code: This parameter specifies the completion code received from - * the SCU. - * - */ -enum sci_status -scic_sds_request_started_state_tc_completion_handler( - struct scic_sds_request *sci_req, - u32 completion_code) -{ - u8 datapres; - struct ssp_response_iu *resp_iu; - - /* - * TODO: Any SDMA return code of other than 0 is bad - * decode 0x003C0000 to determine SDMA status - */ - switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD): - scic_sds_request_set_status(sci_req, - SCU_TASK_DONE_GOOD, - SCI_SUCCESS); - break; - - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EARLY_RESP): - { - /* - * There are times when the SCU hardware will return an early - * response because the io request specified more data than is - * returned by the target device (mode pages, inquiry data, - * etc.). We must check the response stats to see if this is - * truly a failed request or a good request that just got - * completed early. - */ - struct ssp_response_iu *resp = &sci_req->ssp.rsp; - ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); - - sci_swab32_cpy(&sci_req->ssp.rsp, - &sci_req->ssp.rsp, - word_cnt); - - if (resp->status == 0) { - scic_sds_request_set_status( - sci_req, - SCU_TASK_DONE_GOOD, - SCI_SUCCESS_IO_DONE_EARLY); - } else { - scic_sds_request_set_status( - sci_req, - SCU_TASK_DONE_CHECK_RESPONSE, - SCI_FAILURE_IO_RESPONSE_VALID); - } - } - break; - - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CHECK_RESPONSE): - { - ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); - - sci_swab32_cpy(&sci_req->ssp.rsp, - &sci_req->ssp.rsp, - word_cnt); - - scic_sds_request_set_status(sci_req, - SCU_TASK_DONE_CHECK_RESPONSE, - SCI_FAILURE_IO_RESPONSE_VALID); - break; - } - - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RESP_LEN_ERR): - /* - * / @todo With TASK_DONE_RESP_LEN_ERR is the response frame - * guaranteed to be received before this completion status is - * posted? - */ - resp_iu = &sci_req->ssp.rsp; - datapres = resp_iu->datapres; - - if ((datapres == 0x01) || (datapres == 0x02)) { - scic_sds_request_set_status( - sci_req, - SCU_TASK_DONE_CHECK_RESPONSE, - SCI_FAILURE_IO_RESPONSE_VALID); - } else - scic_sds_request_set_status( - sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); - break; - - /* only stp device gets suspended. */ - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_PERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_DATA_LEN_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_ABORT_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_WD_LEN): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_RESP): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR): - if (sci_req->protocol == SCIC_STP_PROTOCOL) { - scic_sds_request_set_status( - sci_req, - SCU_GET_COMPLETION_TL_STATUS(completion_code) >> - SCU_COMPLETION_TL_STATUS_SHIFT, - SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED); - } else { - scic_sds_request_set_status( - sci_req, - SCU_GET_COMPLETION_TL_STATUS(completion_code) >> - SCU_COMPLETION_TL_STATUS_SHIFT, - SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); - } - break; - - /* both stp/ssp device gets suspended */ - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LF_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_WRONG_DESTINATION): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_BAD_DESTINATION): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_ZONE_VIOLATION): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED): - scic_sds_request_set_status( - sci_req, - SCU_GET_COMPLETION_TL_STATUS(completion_code) >> - SCU_COMPLETION_TL_STATUS_SHIFT, - SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED); - break; - - /* neither ssp nor stp gets suspended. */ - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_NAK_CMD_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_XR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_XR_IU_LEN_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDMA_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OFFSET_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_EXCESS_DATA): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_RESP_TO_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_UFI_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_FRM_TYPE_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SMP_LL_RX_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_DATA): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_OPEN_FAIL): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_VIIT_ENTRY_NV): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_IIT_ENTRY_NV): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_RNCNV_OUTBOUND): - default: - scic_sds_request_set_status( - sci_req, - SCU_GET_COMPLETION_TL_STATUS(completion_code) >> - SCU_COMPLETION_TL_STATUS_SHIFT, - SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); - break; - } - - /* - * TODO: This is probably wrong for ACK/NAK timeout conditions - */ - - /* In all cases we will treat this as the completion of the IO req. */ - sci_base_state_machine_change_state( - &sci_req->state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED); - return SCI_SUCCESS; -} - -/* - * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_frame_handler() request. This method - * first determines the frame type received. If this is a response frame then - * the response data is copied to the io request response buffer for processing - * at completion time. If the frame type is not a response buffer an error is - * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE - */ -static enum sci_status -scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req, - u32 frame_index) -{ - enum sci_status status; - u32 *frame_header; - struct ssp_frame_hdr ssp_hdr; - ssize_t word_cnt; - - status = scic_sds_unsolicited_frame_control_get_header( - &(scic_sds_request_get_controller(sci_req)->uf_control), - frame_index, - (void **)&frame_header); - - word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32); - sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt); - - if (ssp_hdr.frame_type == SSP_RESPONSE) { - struct ssp_response_iu *resp_iu; - ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); - - status = scic_sds_unsolicited_frame_control_get_buffer( - &(scic_sds_request_get_controller(sci_req)->uf_control), - frame_index, - (void **)&resp_iu); - - sci_swab32_cpy(&sci_req->ssp.rsp, - resp_iu, word_cnt); - - resp_iu = &sci_req->ssp.rsp; - - if ((resp_iu->datapres == 0x01) || - (resp_iu->datapres == 0x02)) { - scic_sds_request_set_status( - sci_req, - SCU_TASK_DONE_CHECK_RESPONSE, - SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); - } else - scic_sds_request_set_status( - sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); - } else { - /* This was not a response frame why did it get forwarded? */ - dev_err(scic_to_dev(sci_req->owning_controller), - "%s: SCIC IO Request 0x%p received unexpected " - "frame %d type 0x%02x\n", - __func__, - sci_req, - frame_index, - ssp_hdr.frame_type); - } - - /* - * In any case we are done with this frame buffer return it to the - * controller - */ - scic_sds_controller_release_frame( - sci_req->owning_controller, frame_index); - - return SCI_SUCCESS; -} - -/* - * ***************************************************************************** - * * COMPLETED STATE HANDLERS - * ***************************************************************************** */ - - -/* - * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_complete() request. This method frees up - * any io request resources that have been allocated and transitions the - * request to its final state. Consider stopping the state machine instead of - * transitioning to the final state? enum sci_status SCI_SUCCESS - */ -static enum sci_status scic_sds_request_completed_state_complete_handler( - struct scic_sds_request *request) -{ - if (request->was_tag_assigned_by_user != true) { - scic_controller_free_io_tag( - request->owning_controller, request->io_tag); - } - - if (request->saved_rx_frame_index != SCU_INVALID_FRAME_INDEX) { - scic_sds_controller_release_frame( - request->owning_controller, request->saved_rx_frame_index); - } - - sci_base_state_machine_change_state(&request->state_machine, - SCI_BASE_REQUEST_STATE_FINAL); - return SCI_SUCCESS; -} - -/* - * ***************************************************************************** - * * ABORTING STATE HANDLERS - * ***************************************************************************** */ - -/* - * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_terminate() request. This method is the - * io request aborting state abort handlers. On receipt of a multiple - * terminate requests the io request will transition to the completed state. - * This should not happen in normal operation. enum sci_status SCI_SUCCESS - */ -static enum sci_status scic_sds_request_aborting_state_abort_handler( - struct scic_sds_request *request) -{ - sci_base_state_machine_change_state(&request->state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED); - return SCI_SUCCESS; -} - -/* - * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_task_completion() request. This method - * decodes the completion type waiting for the abort task complete - * notification. When the abort task complete is received the io request - * transitions to the completed state. enum sci_status SCI_SUCCESS - */ -static enum sci_status scic_sds_request_aborting_state_tc_completion_handler( - struct scic_sds_request *sci_req, - u32 completion_code) -{ - switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { - case (SCU_TASK_DONE_GOOD << SCU_COMPLETION_TL_STATUS_SHIFT): - case (SCU_TASK_DONE_TASK_ABORT << SCU_COMPLETION_TL_STATUS_SHIFT): - scic_sds_request_set_status( - sci_req, SCU_TASK_DONE_TASK_ABORT, SCI_FAILURE_IO_TERMINATED - ); - - sci_base_state_machine_change_state(&sci_req->state_machine, - SCI_BASE_REQUEST_STATE_COMPLETED); - break; - - default: - /* - * Unless we get some strange error wait for the task abort to complete - * TODO: Should there be a state change for this completion? */ - break; - } - - return SCI_SUCCESS; -} - -/* - * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T - * object receives a scic_sds_request_frame_handler() request. This method - * discards the unsolicited frame since we are waiting for the abort task - * completion. enum sci_status SCI_SUCCESS - */ -static enum sci_status scic_sds_request_aborting_state_frame_handler( - struct scic_sds_request *sci_req, - u32 frame_index) -{ - /* TODO: Is it even possible to get an unsolicited frame in the aborting state? */ - - scic_sds_controller_release_frame( - sci_req->owning_controller, frame_index); - - return SCI_SUCCESS; -} - -static const struct scic_sds_io_request_state_handler scic_sds_request_state_handler_table[] = { - [SCI_BASE_REQUEST_STATE_INITIAL] = { - }, - [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = { - .start_handler = scic_sds_request_constructed_state_start_handler, - .abort_handler = scic_sds_request_constructed_state_abort_handler, - }, - [SCI_BASE_REQUEST_STATE_STARTED] = { - .abort_handler = scic_sds_request_started_state_abort_handler, - .tc_completion_handler = scic_sds_request_started_state_tc_completion_handler, - .frame_handler = scic_sds_request_started_state_frame_handler, - }, - [SCI_BASE_REQUEST_STATE_COMPLETED] = { - .complete_handler = scic_sds_request_completed_state_complete_handler, - }, - [SCI_BASE_REQUEST_STATE_ABORTING] = { - .abort_handler = scic_sds_request_aborting_state_abort_handler, - .tc_completion_handler = scic_sds_request_aborting_state_tc_completion_handler, - .frame_handler = scic_sds_request_aborting_state_frame_handler, - }, - [SCI_BASE_REQUEST_STATE_FINAL] = { - }, -}; - -/** - * scic_sds_request_initial_state_enter() - - * @object: This parameter specifies the base object for which the state - * transition is occurring. - * - * This method implements the actions taken when entering the - * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial - * base request is constructed. Entry into the initial state sets all handlers - * for the io request object to their default handlers. none - */ -static void scic_sds_request_initial_state_enter(void *object) -{ - struct scic_sds_request *sci_req = object; - - SET_STATE_HANDLER( - sci_req, - scic_sds_request_state_handler_table, - SCI_BASE_REQUEST_STATE_INITIAL - ); -} - -/** - * scic_sds_request_constructed_state_enter() - - * @object: The io request object that is to enter the constructed state. - * - * This method implements the actions taken when entering the - * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers - * for the the constructed state. none - */ -static void scic_sds_request_constructed_state_enter(void *object) -{ - struct scic_sds_request *sci_req = object; - - SET_STATE_HANDLER( - sci_req, - scic_sds_request_state_handler_table, - SCI_BASE_REQUEST_STATE_CONSTRUCTED - ); -} - -/** - * scic_sds_request_started_state_enter() - - * @object: This parameter specifies the base object for which the state - * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object. - * - * This method implements the actions taken when entering the - * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a - * SCSI Task request we must enter the started substate machine. none - */ -static void scic_sds_request_started_state_enter(void *object) -{ - struct scic_sds_request *sci_req = object; - - SET_STATE_HANDLER( - sci_req, - scic_sds_request_state_handler_table, - SCI_BASE_REQUEST_STATE_STARTED - ); - - /* - * Most of the request state machines have a started substate machine so - * start its execution on the entry to the started state. */ - if (sci_req->has_started_substate_machine == true) - sci_base_state_machine_start(&sci_req->started_substate_machine); -} - -/** - * scic_sds_request_started_state_exit() - - * @object: This parameter specifies the base object for which the state - * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST - * object. - * - * This method implements the actions taken when exiting the - * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be - * to stop the started substate machine. none - */ -static void scic_sds_request_started_state_exit(void *object) -{ - struct scic_sds_request *sci_req = object; - - if (sci_req->has_started_substate_machine == true) - sci_base_state_machine_stop(&sci_req->started_substate_machine); -} - -/** - * scic_sds_request_completed_state_enter() - - * @object: This parameter specifies the base object for which the state - * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST - * object. - * - * This method implements the actions taken when entering the - * SCI_BASE_REQUEST_STATE_COMPLETED state. This state is entered when the - * SCIC_SDS_IO_REQUEST has completed. The method will decode the request - * completion status and convert it to an enum sci_status to return in the - * completion callback function. none - */ -static void scic_sds_request_completed_state_enter(void *object) -{ - struct scic_sds_request *sci_req = object; - struct scic_sds_controller *scic = - scic_sds_request_get_controller(sci_req); - struct isci_host *ihost = scic_to_ihost(scic); - struct isci_request *ireq = sci_req_to_ireq(sci_req); - - SET_STATE_HANDLER(sci_req, - scic_sds_request_state_handler_table, - SCI_BASE_REQUEST_STATE_COMPLETED); - - /* Tell the SCI_USER that the IO request is complete */ - if (sci_req->is_task_management_request == false) - isci_request_io_request_complete(ihost, - ireq, - sci_req->sci_status); - else - isci_task_request_complete(ihost, ireq, sci_req->sci_status); -} - -/** - * scic_sds_request_aborting_state_enter() - - * @object: This parameter specifies the base object for which the state - * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST - * object. - * - * This method implements the actions taken when entering the - * SCI_BASE_REQUEST_STATE_ABORTING state. none - */ -static void scic_sds_request_aborting_state_enter(void *object) -{ - struct scic_sds_request *sci_req = object; - - /* Setting the abort bit in the Task Context is required by the silicon. */ - sci_req->task_context_buffer->abort = 1; - - SET_STATE_HANDLER( - sci_req, - scic_sds_request_state_handler_table, - SCI_BASE_REQUEST_STATE_ABORTING - ); -} - -/** - * scic_sds_request_final_state_enter() - - * @object: This parameter specifies the base object for which the state - * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object. - * - * This method implements the actions taken when entering the - * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the - * state handlers in place. none - */ -static void scic_sds_request_final_state_enter(void *object) -{ - struct scic_sds_request *sci_req = object; - - SET_STATE_HANDLER( - sci_req, - scic_sds_request_state_handler_table, - SCI_BASE_REQUEST_STATE_FINAL - ); -} - -static const struct sci_base_state scic_sds_request_state_table[] = { - [SCI_BASE_REQUEST_STATE_INITIAL] = { - .enter_state = scic_sds_request_initial_state_enter, - }, - [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = { - .enter_state = scic_sds_request_constructed_state_enter, - }, - [SCI_BASE_REQUEST_STATE_STARTED] = { - .enter_state = scic_sds_request_started_state_enter, - .exit_state = scic_sds_request_started_state_exit - }, - [SCI_BASE_REQUEST_STATE_COMPLETED] = { - .enter_state = scic_sds_request_completed_state_enter, - }, - [SCI_BASE_REQUEST_STATE_ABORTING] = { - .enter_state = scic_sds_request_aborting_state_enter, - }, - [SCI_BASE_REQUEST_STATE_FINAL] = { - .enter_state = scic_sds_request_final_state_enter, - }, -}; - -static void scic_sds_general_request_construct(struct scic_sds_controller *scic, - struct scic_sds_remote_device *sci_dev, - u16 io_tag, struct scic_sds_request *sci_req) -{ - sci_base_state_machine_construct(&sci_req->state_machine, sci_req, - scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL); - sci_base_state_machine_start(&sci_req->state_machine); - - sci_req->io_tag = io_tag; - sci_req->owning_controller = scic; - sci_req->target_device = sci_dev; - sci_req->has_started_substate_machine = false; - sci_req->protocol = SCIC_NO_PROTOCOL; - sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX; - sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev); - - sci_req->sci_status = SCI_SUCCESS; - sci_req->scu_status = 0; - sci_req->post_context = 0xFFFFFFFF; - - sci_req->is_task_management_request = false; - - if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { - sci_req->was_tag_assigned_by_user = false; - sci_req->task_context_buffer = NULL; - } else { - sci_req->was_tag_assigned_by_user = true; - - sci_req->task_context_buffer = - scic_sds_controller_get_task_context_buffer(scic, io_tag); - } -} - -enum sci_status -scic_io_request_construct(struct scic_sds_controller *scic, - struct scic_sds_remote_device *sci_dev, - u16 io_tag, struct scic_sds_request *sci_req) -{ - struct domain_device *dev = sci_dev_to_domain(sci_dev); - enum sci_status status = SCI_SUCCESS; - - /* Build the common part of the request */ - scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req); - - if (sci_dev->rnc.remote_node_index == - SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) - return SCI_FAILURE_INVALID_REMOTE_DEVICE; - - if (dev->dev_type == SAS_END_DEV) - scic_sds_ssp_io_request_assign_buffers(sci_req); - else if ((dev->dev_type == SATA_DEV) || - (dev->tproto & SAS_PROTOCOL_STP)) { - scic_sds_stp_request_assign_buffers(sci_req); - memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd)); - } else if (dev_is_expander(dev)) { - scic_sds_smp_request_assign_buffers(sci_req); - memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd)); - } else - status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; - - if (status == SCI_SUCCESS) { - memset(sci_req->task_context_buffer, 0, - offsetof(struct scu_task_context, sgl_pair_ab)); - } - - return status; -} - -enum sci_status scic_task_request_construct(struct scic_sds_controller *scic, - struct scic_sds_remote_device *sci_dev, - u16 io_tag, struct scic_sds_request *sci_req) -{ - struct domain_device *dev = sci_dev_to_domain(sci_dev); - enum sci_status status = SCI_SUCCESS; - - /* Build the common part of the request */ - scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req); - - if (dev->dev_type == SAS_END_DEV) { - scic_sds_ssp_task_request_assign_buffers(sci_req); - - sci_req->has_started_substate_machine = true; - - /* Construct the started sub-state machine. */ - sci_base_state_machine_construct( - &sci_req->started_substate_machine, - sci_req, - scic_sds_io_request_started_task_mgmt_substate_table, - SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION - ); - } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) - scic_sds_stp_request_assign_buffers(sci_req); - else - status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; - - if (status == SCI_SUCCESS) { - sci_req->is_task_management_request = true; - memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context)); - } - - return status; -} diff --git a/drivers/scsi/isci/core/scic_sds_request.h b/drivers/scsi/isci/core/scic_sds_request.h deleted file mode 100644 index a8d74a15a86b..000000000000 --- a/drivers/scsi/isci/core/scic_sds_request.h +++ /dev/null @@ -1,491 +0,0 @@ -/* - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * BSD LICENSE - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef _SCIC_SDS_IO_REQUEST_H_ -#define _SCIC_SDS_IO_REQUEST_H_ - -#include "isci.h" -#include "scic_io_request.h" -#include "state_machine.h" -#include "scu_task_context.h" -#include "scic_sds_stp_request.h" -#include "sas.h" - -struct scic_sds_controller; -struct scic_sds_remote_device; -struct scic_sds_io_request_state_handler; - -/** - * enum _scic_sds_io_request_started_task_mgmt_substates - This enumeration - * depicts all of the substates for a task management request to be - * performed in the STARTED super-state. - * - * - */ -enum scic_sds_raw_request_started_task_mgmt_substates { - /** - * The AWAIT_TC_COMPLETION sub-state indicates that the started raw - * task management request is waiting for the transmission of the - * initial frame (i.e. command, task, etc.). - */ - SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION, - - /** - * This sub-state indicates that the started task management request - * is waiting for the reception of an unsolicited frame - * (i.e. response IU). - */ - SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE, -}; - - -/** - * enum _scic_sds_smp_request_started_substates - This enumeration depicts all - * of the substates for a SMP request to be performed in the STARTED - * super-state. - * - * - */ -enum scic_sds_smp_request_started_substates { - /** - * This sub-state indicates that the started task management request - * is waiting for the reception of an unsolicited frame - * (i.e. response IU). - */ - SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_RESPONSE, - - /** - * The AWAIT_TC_COMPLETION sub-state indicates that the started SMP request is - * waiting for the transmission of the initial frame (i.e. command, task, etc.). - */ - SCIC_SDS_SMP_REQUEST_STARTED_SUBSTATE_AWAIT_TC_COMPLETION, -}; - -struct scic_sds_request { - /** - * This field contains the information for the base request state machine. - */ - struct sci_base_state_machine state_machine; - - /** - * This field simply points to the controller to which this IO request - * is associated. - */ - struct scic_sds_controller *owning_controller; - - /** - * This field simply points to the remote device to which this IO request - * is associated. - */ - struct scic_sds_remote_device *target_device; - - /** - * This field is utilized to determine if the SCI user is managing - * the IO tag for this request or if the core is managing it. - */ - bool was_tag_assigned_by_user; - - /** - * This field indicates the IO tag for this request. The IO tag is - * comprised of the task_index and a sequence count. The sequence count - * is utilized to help identify tasks from one life to another. - */ - u16 io_tag; - - /** - * This field specifies the protocol being utilized for this - * IO request. - */ - SCIC_TRANSPORT_PROTOCOL protocol; - - /** - * This field indicates the completion status taken from the SCUs - * completion code. It indicates the completion result for the SCU hardware. - */ - u32 scu_status; - - /** - * This field indicates the completion status returned to the SCI user. It - * indicates the users view of the io request completion. - */ - u32 sci_status; - - /** - * This field contains the value to be utilized when posting (e.g. Post_TC, - * Post_TC_Abort) this request to the silicon. - */ - u32 post_context; - - struct scu_task_context *task_context_buffer; - struct scu_task_context tc ____cacheline_aligned; - - /* could be larger with sg chaining */ - #define SCU_SGL_SIZE ((SCU_IO_REQUEST_SGE_COUNT + 1) / 2) - struct scu_sgl_element_pair sg_table[SCU_SGL_SIZE] __attribute__ ((aligned(32))); - - /** - * This field indicates if this request is a task management request or - * normal IO request. - */ - bool is_task_management_request; - - /** - * This field indicates that this request contains an initialized started - * substate machine. - */ - bool has_started_substate_machine; - - /** - * This field is a pointer to the stored rx frame data. It is used in STP - * internal requests and SMP response frames. If this field is non-NULL the - * saved frame must be released on IO request completion. - * - * @todo In the future do we want to keep a list of RX frame buffers? - */ - u32 saved_rx_frame_index; - - /** - * This field specifies the data necessary to manage the sub-state - * machine executed while in the SCI_BASE_REQUEST_STATE_STARTED state. - */ - struct sci_base_state_machine started_substate_machine; - - /** - * This field specifies the current state handlers in place for this - * IO Request object. This field is updated each time the request - * changes state. - */ - const struct scic_sds_io_request_state_handler *state_handlers; - - /** - * This field in the recorded device sequence for the io request. This is - * recorded during the build operation and is compared in the start - * operation. If the sequence is different then there was a change of - * devices from the build to start operations. - */ - u8 device_sequence; - - union { - struct { - union { - struct ssp_cmd_iu cmd; - struct ssp_task_iu tmf; - }; - union { - struct ssp_response_iu rsp; - u8 rsp_buf[SSP_RESP_IU_MAX_SIZE]; - }; - } ssp; - - struct { - struct smp_req cmd; - struct smp_resp rsp; - } smp; - - struct { - struct scic_sds_stp_request req; - struct host_to_dev_fis cmd; - struct dev_to_host_fis rsp; - } stp; - }; - -}; - -static inline struct scic_sds_request *to_sci_req(struct scic_sds_stp_request *stp_req) -{ - struct scic_sds_request *sci_req; - - sci_req = container_of(stp_req, typeof(*sci_req), stp.req); - return sci_req; -} - -/** - * enum sci_base_request_states - This enumeration depicts all the states for - * the common request state machine. - * - * - */ -enum sci_base_request_states { - /** - * Simply the initial state for the base request state machine. - */ - SCI_BASE_REQUEST_STATE_INITIAL, - - /** - * This state indicates that the request has been constructed. This state - * is entered from the INITIAL state. - */ - SCI_BASE_REQUEST_STATE_CONSTRUCTED, - - /** - * This state indicates that the request has been started. This state is - * entered from the CONSTRUCTED state. - */ - SCI_BASE_REQUEST_STATE_STARTED, - - /** - * This state indicates that the request has completed. - * This state is entered from the STARTED state. This state is entered from - * the ABORTING state. - */ - SCI_BASE_REQUEST_STATE_COMPLETED, - - /** - * This state indicates that the request is in the process of being - * terminated/aborted. - * This state is entered from the CONSTRUCTED state. - * This state is entered from the STARTED state. - */ - SCI_BASE_REQUEST_STATE_ABORTING, - - /** - * Simply the final state for the base request state machine. - */ - SCI_BASE_REQUEST_STATE_FINAL, -}; - -typedef enum sci_status (*scic_sds_io_request_handler_t) - (struct scic_sds_request *request); -typedef enum sci_status (*scic_sds_io_request_frame_handler_t) - (struct scic_sds_request *req, u32 frame); -typedef enum sci_status (*scic_sds_io_request_event_handler_t) - (struct scic_sds_request *req, u32 event); -typedef enum sci_status (*scic_sds_io_request_task_completion_handler_t) - (struct scic_sds_request *req, u32 completion_code); - -/** - * struct scic_sds_io_request_state_handler - This is the SDS core definition - * of the state handlers. - * - * - */ -struct scic_sds_io_request_state_handler { - /** - * The start_handler specifies the method invoked when a user attempts to - * start a request. - */ - scic_sds_io_request_handler_t start_handler; - - /** - * The abort_handler specifies the method invoked when a user attempts to - * abort a request. - */ - scic_sds_io_request_handler_t abort_handler; - - /** - * The complete_handler specifies the method invoked when a user attempts to - * complete a request. - */ - scic_sds_io_request_handler_t complete_handler; - - scic_sds_io_request_task_completion_handler_t tc_completion_handler; - scic_sds_io_request_event_handler_t event_handler; - scic_sds_io_request_frame_handler_t frame_handler; - -}; - -extern const struct sci_base_state scic_sds_io_request_started_task_mgmt_substate_table[]; - -/** - * scic_sds_request_get_controller() - - * - * This macro will return the controller for this io request object - */ -#define scic_sds_request_get_controller(sci_req) \ - ((sci_req)->owning_controller) - -/** - * scic_sds_request_get_device() - - * - * This macro will return the device for this io request object - */ -#define scic_sds_request_get_device(sci_req) \ - ((sci_req)->target_device) - -/** - * scic_sds_request_get_port() - - * - * This macro will return the port for this io request object - */ -#define scic_sds_request_get_port(sci_req) \ - scic_sds_remote_device_get_port(scic_sds_request_get_device(sci_req)) - -/** - * scic_sds_request_get_post_context() - - * - * This macro returns the constructed post context result for the io request. - */ -#define scic_sds_request_get_post_context(sci_req) \ - ((sci_req)->post_context) - -/** - * scic_sds_request_get_task_context() - - * - * This is a helper macro to return the os handle for this request object. - */ -#define scic_sds_request_get_task_context(request) \ - ((request)->task_context_buffer) - -/** - * scic_sds_request_set_status() - - * - * This macro will set the scu hardware status and sci request completion - * status for an io request. - */ -#define scic_sds_request_set_status(request, scu_status_code, sci_status_code) \ - { \ - (request)->scu_status = (scu_status_code); \ - (request)->sci_status = (sci_status_code); \ - } - -#define scic_sds_request_complete(a_request) \ - ((a_request)->state_handlers->complete_handler(a_request)) - - -extern enum sci_status -scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code); - -/** - * SCU_SGL_ZERO() - - * - * This macro zeros the hardware SGL element data - */ -#define SCU_SGL_ZERO(scu_sge) \ - { \ - (scu_sge).length = 0; \ - (scu_sge).address_lower = 0; \ - (scu_sge).address_upper = 0; \ - (scu_sge).address_modifier = 0; \ - } - -/** - * SCU_SGL_COPY() - - * - * This macro copys the SGL Element data from the host os to the hardware SGL - * elment data - */ -#define SCU_SGL_COPY(scu_sge, os_sge) \ - { \ - (scu_sge).length = sg_dma_len(sg); \ - (scu_sge).address_upper = \ - upper_32_bits(sg_dma_address(sg)); \ - (scu_sge).address_lower = \ - lower_32_bits(sg_dma_address(sg)); \ - (scu_sge).address_modifier = 0; \ - } - -/** - * scic_sds_request_get_user_request() - - * - * This is a helper macro to return the os handle for this request object. - */ -#define scic_sds_request_get_user_request(request) \ - ((request)->user_request) - -/* - * ***************************************************************************** - * * CORE REQUEST PROTOTYPES - * ***************************************************************************** */ - -void scic_sds_request_build_sgl( - struct scic_sds_request *sci_req); - - - -void scic_sds_stp_request_assign_buffers( - struct scic_sds_request *sci_req); - -void scic_sds_smp_request_assign_buffers( - struct scic_sds_request *sci_req); - -/* --------------------------------------------------------------------------- */ - -enum sci_status scic_sds_request_start( - struct scic_sds_request *sci_req); - -enum sci_status scic_sds_io_request_terminate( - struct scic_sds_request *sci_req); - -enum sci_status scic_sds_io_request_complete( - struct scic_sds_request *sci_req); - -void scic_sds_io_request_copy_response( - struct scic_sds_request *sci_req); - -enum sci_status scic_sds_io_request_event_handler( - struct scic_sds_request *sci_req, - u32 event_code); - -enum sci_status scic_sds_io_request_frame_handler( - struct scic_sds_request *sci_req, - u32 frame_index); - - -enum sci_status scic_sds_task_request_terminate( - struct scic_sds_request *sci_req); - -/* - * ***************************************************************************** - * * STARTED STATE HANDLERS - * ***************************************************************************** */ - -enum sci_status scic_sds_request_started_state_abort_handler( - struct scic_sds_request *sci_req); - -enum sci_status scic_sds_request_started_state_tc_completion_handler( - struct scic_sds_request *sci_req, - u32 completion_code); - -#endif /* _SCIC_SDS_IO_REQUEST_H_ */ diff --git a/drivers/scsi/isci/core/scic_sds_smp_request.h b/drivers/scsi/isci/core/scic_sds_smp_request.h deleted file mode 100644 index f432b7a182cd..000000000000 --- a/drivers/scsi/isci/core/scic_sds_smp_request.h +++ /dev/null @@ -1,67 +0,0 @@ -/* - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * BSD LICENSE - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#ifndef _SCIC_SDS_SMP_REQUEST_T_ -#define _SCIC_SDS_SMP_REQUEST_T_ - -#include "scic_sds_request.h" - - -u32 scic_sds_smp_request_get_object_size(void); - - -void scic_sds_smp_request_copy_response(struct scic_sds_request *sci_req); - -#endif /* _SCIC_SDS_SMP_REQUEST_T_ */ - diff --git a/drivers/scsi/isci/core/scic_sds_stp_packet_request.h b/drivers/scsi/isci/core/scic_sds_stp_packet_request.h deleted file mode 100644 index e94d689e5103..000000000000 --- a/drivers/scsi/isci/core/scic_sds_stp_packet_request.h +++ /dev/null @@ -1,113 +0,0 @@ -/* - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * BSD LICENSE - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#ifndef _SCIC_SDS_STP_PACKET_REQUEST_H_ -#define _SCIC_SDS_STP_PACKET_REQUEST_H_ - -#include "scic_sds_stp_request.h" - -/** - * This file contains the structures and constants for PACKET protocol requests. - * - * - */ - - -/** - * - * - * This is the enumeration of the SATA PIO DATA IN started substate machine. - */ -enum _scic_sds_stp_packet_request_started_substates { - /** - * While in this state the IO request object is waiting for the TC completion - * notification for the H2D Register FIS - */ - SCIC_SDS_STP_PACKET_REQUEST_STARTED_PACKET_PHASE_AWAIT_TC_COMPLETION_SUBSTATE, - - /** - * While in this state the IO request object is waiting for either a PIO Setup. - */ - SCIC_SDS_STP_PACKET_REQUEST_STARTED_PACKET_PHASE_AWAIT_PIO_SETUP_SUBSTATE, - - /** - * While in this state the IO request object is waiting for TC completion for - * the Packet DMA DATA fis or Raw Frame. - */ - SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMMAND_PHASE_AWAIT_TC_COMPLETION_SUBSTATE, - - /** - * The non-data IO transit to this state in this state after receiving TC - * completion. While in this state IO request object is waiting for D2H status - * frame as UF. - */ - SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMMAND_PHASE_AWAIT_D2H_FIS_SUBSTATE, - - /** - * The IO transit to this state in this state if the previous TC completion status - * is not success and the atapi device is suspended due to target device failed the IO. - * While in this state IO request object is waiting for device coming out of the - * suspension state then complete the IO. - */ - SCIC_SDS_STP_PACKET_REQUEST_STARTED_COMPLETION_DELAY_SUBSTATE, -}; - -#define scic_sds_stp_packet_request_construct(request) SCI_FAILURE -#define scu_stp_packet_request_command_phase_construct_task_context(reqeust, tc) -#define scu_stp_packet_request_command_phase_reconstruct_raw_frame_task_context(reqeust, tc) -#define scic_sds_stp_packet_request_process_status_fis(reqeust, fis) SCI_FAILURE -#define scic_sds_stp_packet_internal_request_sense_build_sgl(request) - -#endif /* _SCIC_SDS_STP_PACKET_REQUEST_H_ */ - diff --git a/drivers/scsi/isci/core/scic_sds_stp_pio_request.h b/drivers/scsi/isci/core/scic_sds_stp_pio_request.h deleted file mode 100644 index e015a1114760..000000000000 --- a/drivers/scsi/isci/core/scic_sds_stp_pio_request.h +++ /dev/null @@ -1,104 +0,0 @@ -/* - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * BSD LICENSE - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef _SCIC_SDS_SATA_PIO_REQUEST_H_ -#define _SCIC_SDS_SATA_PIO_REQUEST_H_ - -#include "scic_sds_request.h" -#include "scu_task_context.h" - -/** - * This file contains the structures and constants for SATA PIO requests. - * - * - */ - - -/** - * - * - * This is the enumeration of the SATA PIO DATA IN started substate machine. - */ -enum _scic_sds_stp_request_started_pio_substates { - /** - * While in this state the IO request object is waiting for the TC completion - * notification for the H2D Register FIS - */ - SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE, - - /** - * While in this state the IO request object is waiting for either a PIO Setup - * FIS or a D2H register FIS. The type of frame received is based on the - * result of the prior frame and line conditions. - */ - SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE, - - /** - * While in this state the IO request object is waiting for a DATA frame from - * the device. - */ - SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE, - - /** - * While in this state the IO request object is waiting to transmit the next data - * frame to the device. - */ - SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE, -}; - -struct scic_sds_stp_request; - - -#endif /* _SCIC_SDS_SATA_PIO_REQUEST_H_ */ diff --git a/drivers/scsi/isci/core/scic_task_request.h b/drivers/scsi/isci/core/scic_task_request.h deleted file mode 100644 index 790cee9b4af6..000000000000 --- a/drivers/scsi/isci/core/scic_task_request.h +++ /dev/null @@ -1,104 +0,0 @@ -/* - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * BSD LICENSE - * - * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef _SCIC_TASK_REQUEST_H_ -#define _SCIC_TASK_REQUEST_H_ - -#include "isci.h" - -struct scic_sds_request; -struct scic_sds_remote_device; -struct scic_sds_controller; - - -enum sci_status scic_task_request_construct( - struct scic_sds_controller *scic_controller, - struct scic_sds_remote_device *scic_remote_device, - u16 io_tag, struct scic_sds_request *sci_req); - -/** - * scic_task_request_construct_ssp() - This method is called by the SCI user to - * construct all SCI Core SSP task management requests. Memory - * initialization and functionality common to all task request types is - * performed in this method. - * @scic_task_request: This parameter specifies the handle to the core task - * request object for which to construct a SATA specific task management - * request. - * - * Indicate if the controller successfully built the task request. SCI_SUCCESS - * This value is returned if the task request was successfully built. - */ -enum sci_status scic_task_request_construct_ssp( - struct scic_sds_request *scic_task_request); - -/** - * scic_task_request_construct_sata() - This method is called by the SCI user - * to construct all SCI Core SATA task management requests. Memory - * initialization and functionality common to all task request types is - * performed in this method. - * @scic_task_request_handle: This parameter specifies the handle to the core - * task request object for which to construct a SATA specific task - * management request. - * - * Indicate if the controller successfully built the task request. SCI_SUCCESS - * This value is returned if the task request was successfully built. - */ -enum sci_status scic_task_request_construct_sata( - struct scic_sds_request *scic_task_request_handle); - - - -#endif /* _SCIC_TASK_REQUEST_H_ */ - diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 71a0466d1c8e..e1930da08d4e 100644 --- a/drivers/scsi/isci/host.c +++ b/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" diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h index d288897b85fb..69826eac97b5 100644 --- a/drivers/scsi/isci/isci.h +++ b/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; diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index f44fa20cad96..d4bf6d2d8c9b 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -55,7 +55,6 @@ #include #include "isci.h" -#include "scic_io_request.h" #include "scic_phy.h" #include "scic_sds_phy.h" #include "scic_port.h" diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 00334b9ccd80..23390102514f 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/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" diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 5891f3d50177..35231e7407b1 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/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" diff --git a/drivers/scsi/isci/remote_node_table.c b/drivers/scsi/isci/remote_node_table.c index 80f44c25f45f..6b9465a5a217 100644 --- a/drivers/scsi/isci/remote_node_table.c +++ b/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" diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 4961ee347091..857ad067f11c 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -54,407 +54,1128 @@ */ #include "isci.h" -#include "scic_io_request.h" -#include "scic_task_request.h" #include "scic_port.h" #include "task.h" #include "request.h" #include "sata.h" #include "scu_completion_codes.h" -#include "scic_sds_request.h" #include "sas.h" -static enum sci_status isci_request_ssp_request_construct( - struct isci_request *request) -{ - enum sci_status status; +/** + * 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; - dev_dbg(&request->isci_host->pdev->dev, - "%s: request = %p\n", - __func__, - request); - status = scic_io_request_construct_basic_ssp(&request->sci); - return status; -} + task_context = (struct scu_task_context *)sci_req->task_context_buffer; -static enum sci_status isci_request_stp_request_construct( - struct isci_request *request) -{ - struct sas_task *task = isci_request_access_task(request); - enum sci_status status; - struct host_to_dev_fis *register_fis; - - dev_dbg(&request->isci_host->pdev->dev, - "%s: request = %p\n", - __func__, - request); - - /* Get the host_to_dev_fis from the core and copy - * the fis from the task into it. - */ - register_fis = isci_sata_task_to_fis_copy(task); - - status = scic_io_request_construct_basic_sata(&request->sci); - - /* Set the ncq tag in the fis, from the queue - * command in the task. - */ - if (isci_sata_is_task_ncq(task)) { - - isci_sata_set_ncq_tag( - register_fis, - task - ); + if (sgl_pair_index == 0) { + return &task_context->sgl_pair_ab; + } else if (sgl_pair_index == 1) { + return &task_context->sgl_pair_cd; } - return status; -} - -/* - * isci_smp_request_build() - This function builds the smp request. - * @ireq: This parameter points to the isci_request allocated in the - * request construct function. - * - * SCI_SUCCESS on successfull completion, or specific failure code. - */ -static enum sci_status isci_smp_request_build(struct isci_request *ireq) -{ - enum sci_status status = SCI_FAILURE; - struct sas_task *task = isci_request_access_task(ireq); - struct scic_sds_request *sci_req = &ireq->sci; - - dev_dbg(&ireq->isci_host->pdev->dev, - "%s: request = %p\n", __func__, ireq); - - dev_dbg(&ireq->isci_host->pdev->dev, - "%s: smp_req len = %d\n", - __func__, - task->smp_task.smp_req.length); - - /* copy the smp_command to the address; */ - sg_copy_to_buffer(&task->smp_task.smp_req, 1, - &sci_req->smp.cmd, - sizeof(struct smp_req)); - - status = scic_io_request_construct_smp(sci_req); - if (status != SCI_SUCCESS) - dev_warn(&ireq->isci_host->pdev->dev, - "%s: failed with status = %d\n", - __func__, - status); - - return status; + return &sci_req->sg_table[sgl_pair_index - 2]; } /** - * isci_io_request_build() - This function builds the io request object. - * @isci_host: This parameter specifies the ISCI host object - * @request: This parameter points to the isci_request object allocated in the - * request construct function. - * @sci_device: This parameter is the handle for the sci core's remote device - * object that is the destination for this request. + * This 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. * - * SCI_SUCCESS on successfull completion, or specific failure code. */ -static enum sci_status isci_io_request_build( - struct isci_host *isci_host, - struct isci_request *request, - struct isci_remote_device *isci_device) +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 sas_task *task = isci_request_access_task(request); - struct scic_sds_remote_device *sci_device = &isci_device->sci; + struct isci_request *ireq = sci_req_to_ireq(sci_req); + struct sas_task *task = isci_request_access_task(ireq); - dev_dbg(&isci_host->pdev->dev, - "%s: isci_device = 0x%p; request = %p, " - "num_scatter = %d\n", - __func__, - isci_device, - request, - task->num_scatter); + /* check for management protocols */ + if (ireq->ttype == tmf_task) { + struct isci_tmf *tmf = isci_request_access_tmf(ireq); - /* map the sgl addresses, if present. - * libata does the mapping for sata devices - * before we get the request. - */ - if (task->num_scatter && - !sas_protocol_ata(task->task_proto) && - !(SAS_PROTOCOL_SMP & task->task_proto)) { + 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); - request->num_sg_entries = dma_map_sg( - &isci_host->pdev->dev, - task->scatter, - task->num_scatter, - task->data_dir - ); - - if (request->num_sg_entries == 0) - return SCI_FAILURE_INSUFFICIENT_RESOURCES; + return SCI_FAILURE; + } } - /* build the common request object. For now, - * we will let the core allocate the IO tag. - */ - status = scic_io_request_construct(&isci_host->sci, sci_device, - SCI_CONTROLLER_INVALID_IO_TAG, - &request->sci); - - if (status != SCI_SUCCESS) { - dev_warn(&isci_host->pdev->dev, - "%s: failed request construct\n", - __func__); + 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; + } - switch (task->task_proto) { - case SAS_PROTOCOL_SMP: - status = isci_smp_request_build(request); - break; - case SAS_PROTOCOL_SSP: - status = isci_request_ssp_request_construct(request); - break; - case SAS_PROTOCOL_SATA: - case SAS_PROTOCOL_STP: - case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: - status = isci_request_stp_request_construct(request); - break; - default: - dev_warn(&isci_host->pdev->dev, - "%s: unknown protocol\n", __func__); - return SCI_FAILURE; - } + /* non data */ + if (task->data_dir == DMA_NONE) + return scic_sds_stp_non_data_request_construct(sci_req); + + /* NCQ */ + if (task->ata_task.use_ncq) + return scic_sds_stp_ncq_request_construct(sci_req, len, dir); + + /* DMA */ + if (task->ata_task.dma_xfer) + return scic_sds_stp_udma_request_construct(sci_req, len, dir); + else /* PIO */ + return scic_sds_stp_pio_request_construct(sci_req, copy); + + return status; +} + +static enum sci_status scic_io_request_construct_basic_ssp(struct scic_sds_request *sci_req) +{ + struct isci_request *ireq = sci_req_to_ireq(sci_req); + struct sas_task *task = isci_request_access_task(ireq); + + sci_req->protocol = SCIC_SSP_PROTOCOL; + + scu_ssp_io_request_construct_task_context(sci_req, + task->data_dir, + task->total_xfer_len); + + scic_sds_io_request_build_ssp_command_iu(sci_req); + + sci_base_state_machine_change_state( + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_CONSTRUCTED); + + return SCI_SUCCESS; +} + +enum sci_status scic_task_request_construct_ssp( + struct scic_sds_request *sci_req) +{ + /* Construct the SSP Task SCU Task Context */ + scu_ssp_task_request_construct_task_context(sci_req); + + /* Fill in the SSP Task IU */ + scic_sds_task_request_build_ssp_task_iu(sci_req); + + sci_base_state_machine_change_state(&sci_req->state_machine, + SCI_BASE_REQUEST_STATE_CONSTRUCTED); return SCI_SUCCESS; } -/** - * isci_request_alloc_core() - This function gets the request object from the - * isci_host dma cache. - * @isci_host: This parameter specifies the ISCI host object - * @isci_request: This parameter will contain the pointer to the new - * isci_request object. - * @isci_device: This parameter is the pointer to the isci remote device object - * that is the destination for this request. - * @gfp_flags: This parameter specifies the os allocation flags. - * - * SCI_SUCCESS on successfull completion, or specific failure code. - */ -static int isci_request_alloc_core( - struct isci_host *isci_host, - struct isci_request **isci_request, - struct isci_remote_device *isci_device, - gfp_t gfp_flags) +static enum sci_status scic_io_request_construct_basic_sata(struct scic_sds_request *sci_req) { - int ret = 0; - dma_addr_t handle; - struct isci_request *request; + 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; - /* get pointer to dma memory. This actually points - * to both the isci_remote_device object and the - * sci object. The isci object is at the beginning - * of the memory allocated here. - */ - request = dma_pool_alloc(isci_host->dma_pool, gfp_flags, &handle); - if (!request) { - dev_warn(&isci_host->pdev->dev, - "%s: dma_pool_alloc returned NULL\n", __func__); - return -ENOMEM; - } + copy = (task->data_dir == DMA_NONE) ? false : true; - /* initialize the request object. */ - spin_lock_init(&request->state_lock); - request->request_daddr = handle; - request->isci_host = isci_host; - request->isci_device = isci_device; - request->io_request_completion = NULL; - request->terminated = false; + status = scic_io_request_construct_sata(sci_req, + task->total_xfer_len, + task->data_dir, + copy); - request->num_sg_entries = 0; + if (status == SCI_SUCCESS) + sci_base_state_machine_change_state(&sci_req->state_machine, + SCI_BASE_REQUEST_STATE_CONSTRUCTED); - request->complete_in_target = false; - - INIT_LIST_HEAD(&request->completed_node); - INIT_LIST_HEAD(&request->dev_node); - - *isci_request = request; - isci_request_change_state(request, allocated); - - return ret; + return status; } -static int isci_request_alloc_io( - struct isci_host *isci_host, - struct sas_task *task, - struct isci_request **isci_request, - struct isci_remote_device *isci_device, - gfp_t gfp_flags) + +enum sci_status scic_task_request_construct_sata(struct scic_sds_request *sci_req) { - int retval = isci_request_alloc_core(isci_host, isci_request, - isci_device, gfp_flags); + enum sci_status status = SCI_SUCCESS; + struct isci_request *ireq = sci_req_to_ireq(sci_req); - if (!retval) { - (*isci_request)->ttype_ptr.io_task_ptr = task; - (*isci_request)->ttype = io_task; + /* check for management protocols */ + if (ireq->ttype == tmf_task) { + struct isci_tmf *tmf = isci_request_access_tmf(ireq); - task->lldd_task = *isci_request; + 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; + } } - return retval; + + if (status == SCI_SUCCESS) + sci_base_state_machine_change_state( + &sci_req->state_machine, + SCI_BASE_REQUEST_STATE_CONSTRUCTED); + + return status; } /** - * isci_request_alloc_tmf() - This function gets the request object from the - * isci_host dma cache and initializes the relevant fields as a sas_task. - * @isci_host: This parameter specifies the ISCI host object - * @sas_task: This parameter is the task struct from the upper layer driver. - * @isci_request: This parameter will contain the pointer to the new - * isci_request object. - * @isci_device: This parameter is the pointer to the isci remote device object - * that is the destination for this request. - * @gfp_flags: This parameter specifies the os allocation flags. - * - * SCI_SUCCESS on successfull completion, or specific failure code. + * sci_req_tx_bytes - bytes transferred when reply underruns request + * @sci_req: request that was terminated early */ -int isci_request_alloc_tmf( - struct isci_host *isci_host, - struct isci_tmf *isci_tmf, - struct isci_request **isci_request, - struct isci_remote_device *isci_device, - gfp_t gfp_flags) +#define SCU_TASK_CONTEXT_SRAM 0x200000 +static u32 sci_req_tx_bytes(struct scic_sds_request *sci_req) { - int retval = isci_request_alloc_core(isci_host, isci_request, - isci_device, gfp_flags); + struct scic_sds_controller *scic = sci_req->owning_controller; + u32 ret_val = 0; - if (!retval) { + if (readl(&scic->smu_registers->address_modifier) == 0) { + void __iomem *scu_reg_base = scic->scu_registers; - (*isci_request)->ttype_ptr.tmf_task_ptr = isci_tmf; - (*isci_request)->ttype = tmf_task; - } - return retval; -} - -/** - * isci_request_execute() - This function allocates the isci_request object, - * all fills in some common fields. - * @isci_host: This parameter specifies the ISCI host object - * @sas_task: This parameter is the task struct from the upper layer driver. - * @isci_request: This parameter will contain the pointer to the new - * isci_request object. - * @gfp_flags: This parameter specifies the os allocation flags. - * - * SCI_SUCCESS on successfull completion, or specific failure code. - */ -int isci_request_execute( - struct isci_host *isci_host, - struct sas_task *task, - struct isci_request **isci_request, - gfp_t gfp_flags) -{ - int ret = 0; - struct scic_sds_remote_device *sci_device; - enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; - struct isci_remote_device *isci_device; - struct isci_request *request; - unsigned long flags; - - isci_device = task->dev->lldd_dev; - sci_device = &isci_device->sci; - - /* do common allocation and init of request object. */ - ret = isci_request_alloc_io( - isci_host, - task, - &request, - isci_device, - gfp_flags - ); - - if (ret) - goto out; - - status = isci_io_request_build(isci_host, request, isci_device); - if (status != SCI_SUCCESS) { - dev_warn(&isci_host->pdev->dev, - "%s: request_construct failed - status = 0x%x\n", - __func__, - status); - goto out; - } - - spin_lock_irqsave(&isci_host->scic_lock, flags); - - /* send the request, let the core assign the IO TAG. */ - status = scic_controller_start_io(&isci_host->sci, sci_device, - &request->sci, - SCI_CONTROLLER_INVALID_IO_TAG); - if (status != SCI_SUCCESS && - status != SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) { - dev_warn(&isci_host->pdev->dev, - "%s: failed request start (0x%x)\n", - __func__, status); - spin_unlock_irqrestore(&isci_host->scic_lock, flags); - goto out; - } - - /* Either I/O started OK, or the core has signaled that - * the device needs a target reset. - * - * In either case, hold onto the I/O for later. - * - * Update it's status and add it to the list in the - * remote device object. - */ - isci_request_change_state(request, started); - list_add(&request->dev_node, &isci_device->reqs_in_process); - - if (status == SCI_SUCCESS) { - /* Save the tag for possible task mgmt later. */ - request->io_tag = scic_io_request_get_io_tag(&request->sci); - } else { - /* The request did not really start in the - * hardware, so clear the request handle - * here so no terminations will be done. + /* 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 */ - request->terminated = true; - } - spin_unlock_irqrestore(&isci_host->scic_lock, flags); - - if (status == - SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) { - /* Signal libsas that we need the SCSI error - * handler thread to work on this I/O and that - * we want a device reset. - */ - spin_lock_irqsave(&task->task_state_lock, flags); - task->task_state_flags |= SAS_TASK_NEED_DEV_RESET; - spin_unlock_irqrestore(&task->task_state_lock, flags); - - /* Cause this task to be scheduled in the SCSI error - * handler thread. - */ - isci_execpath_callback(isci_host, task, - sas_task_abort); - - /* Change the status, since we are holding - * the I/O until it is managed by the SCSI - * error handler. - */ - status = SCI_SUCCESS; + ret_val = readl(scu_reg_base + + (SCU_TASK_CONTEXT_SRAM + offsetof(struct scu_task_context, type.ssp.data_offset)) + + ((sizeof(struct scu_task_context)) * scic_sds_io_tag_get_index(sci_req->io_tag))); } - out: - if (status != SCI_SUCCESS) { - /* release dma memory on failure. */ - isci_request_free(isci_host, request); - request = NULL; - ret = SCI_FAILURE; - } - - *isci_request = request; - return ret; + return ret_val; } +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_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; +} + +/** + * + * @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); +} + +/* + * 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. + * + */ +static 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; +} + +enum sci_status +scic_sds_io_request_tc_completion(struct scic_sds_request *request, u32 completion_code) +{ + if (request->state_machine.current_state_id == SCI_BASE_REQUEST_STATE_STARTED && + request->has_started_substate_machine == false) + return scic_sds_request_started_state_tc_completion_handler(request, completion_code); + else if (request->state_handlers->tc_completion_handler) + return request->state_handlers->tc_completion_handler(request, completion_code); + + dev_warn(scic_to_dev(request->owning_controller), + "%s: SCIC IO Request given task completion notification %x " + "while in wrong state %d\n", + __func__, + completion_code, + sci_base_state_machine_get_state(&request->state_machine)); + + return SCI_FAILURE_INVALID_STATE; + +} + +/* + * This method implements the action to be taken when an SCIC_SDS_IO_REQUEST_T + * object receives a scic_sds_request_frame_handler() request. This method + * first determines the frame type received. If this is a response frame then + * the response data is copied to the io request response buffer for processing + * at completion time. If the frame type is not a response buffer an error is + * logged. enum sci_status SCI_SUCCESS SCI_FAILURE_INVALID_PARAMETER_VALUE + */ +static enum sci_status +scic_sds_request_started_state_frame_handler(struct scic_sds_request *sci_req, + u32 frame_index) +{ + enum sci_status status; + u32 *frame_header; + struct ssp_frame_hdr ssp_hdr; + ssize_t word_cnt; + + status = scic_sds_unsolicited_frame_control_get_header( + &(scic_sds_request_get_controller(sci_req)->uf_control), + frame_index, + (void **)&frame_header); + + word_cnt = sizeof(struct ssp_frame_hdr) / sizeof(u32); + sci_swab32_cpy(&ssp_hdr, frame_header, word_cnt); + + if (ssp_hdr.frame_type == SSP_RESPONSE) { + struct ssp_response_iu *resp_iu; + ssize_t word_cnt = SSP_RESP_IU_MAX_SIZE / sizeof(u32); + + status = scic_sds_unsolicited_frame_control_get_buffer( + &(scic_sds_request_get_controller(sci_req)->uf_control), + frame_index, + (void **)&resp_iu); + + sci_swab32_cpy(&sci_req->ssp.rsp, + resp_iu, word_cnt); + + resp_iu = &sci_req->ssp.rsp; + + if ((resp_iu->datapres == 0x01) || + (resp_iu->datapres == 0x02)) { + scic_sds_request_set_status( + sci_req, + SCU_TASK_DONE_CHECK_RESPONSE, + SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR); + } else + scic_sds_request_set_status( + sci_req, SCU_TASK_DONE_GOOD, SCI_SUCCESS); + } else { + /* 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] = { + }, +}; + /** * isci_request_process_response_iu() - This function sets the status and @@ -541,7 +1262,7 @@ static void isci_request_handle_controller_specific_errors( { unsigned int cstatus; - cstatus = scic_request_get_controller_status(&request->sci); + cstatus = request->sci.scu_status; dev_dbg(&request->isci_host->pdev->dev, "%s: %p SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR " @@ -833,20 +1554,9 @@ static void isci_task_save_for_upper_layer_completion( } } -/** - * isci_request_io_request_complete() - This function is called by the sci core - * when an io request completes. - * @isci_host: This parameter specifies the ISCI host object - * @request: This parameter is the completed isci_request object. - * @completion_status: This parameter specifies the completion status from the - * sci core. - * - * none. - */ -void isci_request_io_request_complete( - struct isci_host *isci_host, - struct isci_request *request, - enum sci_io_status completion_status) +static void isci_request_io_request_complete(struct isci_host *isci_host, + struct isci_request *request, + enum sci_io_status completion_status) { struct sas_task *task = isci_request_access_task(request); struct ssp_response_iu *resp_iu; @@ -1035,8 +1745,7 @@ void isci_request_io_request_complete( * There is a possibility that less data than * the maximum was transferred. */ - u32 transferred_length - = scic_io_request_get_number_of_bytes_transferred(&request->sci); + u32 transferred_length = sci_req_tx_bytes(&request->sci); task->task_status.residual = task->total_xfer_len - transferred_length; @@ -1158,3 +1867,680 @@ void isci_request_io_request_complete( isci_host_can_dequeue(isci_host, 1); } + +/** + * scic_sds_request_initial_state_enter() - + * @object: This parameter specifies the base object for which the state + * transition is occurring. + * + * This method implements the actions taken when entering the + * SCI_BASE_REQUEST_STATE_INITIAL state. This state is entered when the initial + * base request is constructed. Entry into the initial state sets all handlers + * for the io request object to their default handlers. none + */ +static void scic_sds_request_initial_state_enter(void *object) +{ + struct scic_sds_request *sci_req = object; + + SET_STATE_HANDLER( + sci_req, + scic_sds_request_state_handler_table, + SCI_BASE_REQUEST_STATE_INITIAL + ); +} + +/** + * scic_sds_request_constructed_state_enter() - + * @object: The io request object that is to enter the constructed state. + * + * This method implements the actions taken when entering the + * SCI_BASE_REQUEST_STATE_CONSTRUCTED state. The method sets the state handlers + * for the the constructed state. none + */ +static void scic_sds_request_constructed_state_enter(void *object) +{ + struct scic_sds_request *sci_req = object; + + SET_STATE_HANDLER( + sci_req, + scic_sds_request_state_handler_table, + SCI_BASE_REQUEST_STATE_CONSTRUCTED + ); +} + +/** + * scic_sds_request_started_state_enter() - + * @object: This parameter specifies the base object for which the state + * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object. + * + * This method implements the actions taken when entering the + * SCI_BASE_REQUEST_STATE_STARTED state. If the io request object type is a + * SCSI Task request we must enter the started substate machine. none + */ +static void scic_sds_request_started_state_enter(void *object) +{ + struct scic_sds_request *sci_req = object; + + SET_STATE_HANDLER( + sci_req, + scic_sds_request_state_handler_table, + SCI_BASE_REQUEST_STATE_STARTED + ); + + /* + * Most of the request state machines have a started substate machine so + * start its execution on the entry to the started state. */ + if (sci_req->has_started_substate_machine == true) + sci_base_state_machine_start(&sci_req->started_substate_machine); +} + +/** + * scic_sds_request_started_state_exit() - + * @object: This parameter specifies the base object for which the state + * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST + * object. + * + * This method implements the actions taken when exiting the + * SCI_BASE_REQUEST_STATE_STARTED state. For task requests the action will be + * to stop the started substate machine. none + */ +static void scic_sds_request_started_state_exit(void *object) +{ + struct scic_sds_request *sci_req = object; + + if (sci_req->has_started_substate_machine == true) + sci_base_state_machine_stop(&sci_req->started_substate_machine); +} + +/** + * scic_sds_request_completed_state_enter() - + * @object: This parameter specifies the base object for which the state + * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST + * object. + * + * This method implements the actions taken when entering the + * SCI_BASE_REQUEST_STATE_COMPLETED state. This state is entered when the + * SCIC_SDS_IO_REQUEST has completed. The method will decode the request + * completion status and convert it to an enum sci_status to return in the + * completion callback function. none + */ +static void scic_sds_request_completed_state_enter(void *object) +{ + struct scic_sds_request *sci_req = object; + struct scic_sds_controller *scic = + scic_sds_request_get_controller(sci_req); + struct isci_host *ihost = scic_to_ihost(scic); + struct isci_request *ireq = sci_req_to_ireq(sci_req); + + SET_STATE_HANDLER(sci_req, + scic_sds_request_state_handler_table, + SCI_BASE_REQUEST_STATE_COMPLETED); + + /* Tell the SCI_USER that the IO request is complete */ + if (sci_req->is_task_management_request == false) + isci_request_io_request_complete(ihost, ireq, + sci_req->sci_status); + else + isci_task_request_complete(ihost, ireq, sci_req->sci_status); +} + +/** + * scic_sds_request_aborting_state_enter() - + * @object: This parameter specifies the base object for which the state + * transition is occurring. This object is cast into a SCIC_SDS_IO_REQUEST + * object. + * + * This method implements the actions taken when entering the + * SCI_BASE_REQUEST_STATE_ABORTING state. none + */ +static void scic_sds_request_aborting_state_enter(void *object) +{ + struct scic_sds_request *sci_req = object; + + /* Setting the abort bit in the Task Context is required by the silicon. */ + sci_req->task_context_buffer->abort = 1; + + SET_STATE_HANDLER( + sci_req, + scic_sds_request_state_handler_table, + SCI_BASE_REQUEST_STATE_ABORTING + ); +} + +/** + * scic_sds_request_final_state_enter() - + * @object: This parameter specifies the base object for which the state + * transition is occurring. This is cast into a SCIC_SDS_IO_REQUEST object. + * + * This method implements the actions taken when entering the + * SCI_BASE_REQUEST_STATE_FINAL state. The only action required is to put the + * state handlers in place. none + */ +static void scic_sds_request_final_state_enter(void *object) +{ + struct scic_sds_request *sci_req = object; + + SET_STATE_HANDLER( + sci_req, + scic_sds_request_state_handler_table, + SCI_BASE_REQUEST_STATE_FINAL + ); +} + +static const struct sci_base_state scic_sds_request_state_table[] = { + [SCI_BASE_REQUEST_STATE_INITIAL] = { + .enter_state = scic_sds_request_initial_state_enter, + }, + [SCI_BASE_REQUEST_STATE_CONSTRUCTED] = { + .enter_state = scic_sds_request_constructed_state_enter, + }, + [SCI_BASE_REQUEST_STATE_STARTED] = { + .enter_state = scic_sds_request_started_state_enter, + .exit_state = scic_sds_request_started_state_exit + }, + [SCI_BASE_REQUEST_STATE_COMPLETED] = { + .enter_state = scic_sds_request_completed_state_enter, + }, + [SCI_BASE_REQUEST_STATE_ABORTING] = { + .enter_state = scic_sds_request_aborting_state_enter, + }, + [SCI_BASE_REQUEST_STATE_FINAL] = { + .enter_state = scic_sds_request_final_state_enter, + }, +}; + +static void scic_sds_general_request_construct(struct scic_sds_controller *scic, + struct scic_sds_remote_device *sci_dev, + u16 io_tag, struct scic_sds_request *sci_req) +{ + sci_base_state_machine_construct(&sci_req->state_machine, sci_req, + scic_sds_request_state_table, SCI_BASE_REQUEST_STATE_INITIAL); + sci_base_state_machine_start(&sci_req->state_machine); + + sci_req->io_tag = io_tag; + sci_req->owning_controller = scic; + sci_req->target_device = sci_dev; + sci_req->has_started_substate_machine = false; + sci_req->protocol = SCIC_NO_PROTOCOL; + sci_req->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX; + sci_req->device_sequence = scic_sds_remote_device_get_sequence(sci_dev); + + sci_req->sci_status = SCI_SUCCESS; + sci_req->scu_status = 0; + sci_req->post_context = 0xFFFFFFFF; + + sci_req->is_task_management_request = false; + + if (io_tag == SCI_CONTROLLER_INVALID_IO_TAG) { + sci_req->was_tag_assigned_by_user = false; + sci_req->task_context_buffer = NULL; + } else { + sci_req->was_tag_assigned_by_user = true; + + sci_req->task_context_buffer = + scic_sds_controller_get_task_context_buffer(scic, io_tag); + } +} + +static enum sci_status +scic_io_request_construct(struct scic_sds_controller *scic, + struct scic_sds_remote_device *sci_dev, + u16 io_tag, struct scic_sds_request *sci_req) +{ + struct domain_device *dev = sci_dev_to_domain(sci_dev); + enum sci_status status = SCI_SUCCESS; + + /* Build the common part of the request */ + scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req); + + if (sci_dev->rnc.remote_node_index == + SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) + return SCI_FAILURE_INVALID_REMOTE_DEVICE; + + if (dev->dev_type == SAS_END_DEV) + scic_sds_ssp_io_request_assign_buffers(sci_req); + else if ((dev->dev_type == SATA_DEV) || + (dev->tproto & SAS_PROTOCOL_STP)) { + scic_sds_stp_request_assign_buffers(sci_req); + memset(&sci_req->stp.cmd, 0, sizeof(sci_req->stp.cmd)); + } else if (dev_is_expander(dev)) { + scic_sds_smp_request_assign_buffers(sci_req); + memset(&sci_req->smp.cmd, 0, sizeof(sci_req->smp.cmd)); + } else + status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; + + if (status == SCI_SUCCESS) { + memset(sci_req->task_context_buffer, 0, + offsetof(struct scu_task_context, sgl_pair_ab)); + } + + return status; +} + +enum sci_status scic_task_request_construct(struct scic_sds_controller *scic, + struct scic_sds_remote_device *sci_dev, + u16 io_tag, struct scic_sds_request *sci_req) +{ + struct domain_device *dev = sci_dev_to_domain(sci_dev); + enum sci_status status = SCI_SUCCESS; + + /* Build the common part of the request */ + scic_sds_general_request_construct(scic, sci_dev, io_tag, sci_req); + + if (dev->dev_type == SAS_END_DEV) { + scic_sds_ssp_task_request_assign_buffers(sci_req); + + sci_req->has_started_substate_machine = true; + + /* Construct the started sub-state machine. */ + sci_base_state_machine_construct( + &sci_req->started_substate_machine, + sci_req, + scic_sds_io_request_started_task_mgmt_substate_table, + SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION + ); + } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) + scic_sds_stp_request_assign_buffers(sci_req); + else + status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; + + if (status == SCI_SUCCESS) { + sci_req->is_task_management_request = true; + memset(sci_req->task_context_buffer, 0, sizeof(struct scu_task_context)); + } + + return status; +} + +static enum sci_status isci_request_ssp_request_construct( + struct isci_request *request) +{ + enum sci_status status; + + dev_dbg(&request->isci_host->pdev->dev, + "%s: request = %p\n", + __func__, + request); + status = scic_io_request_construct_basic_ssp(&request->sci); + return status; +} + +static enum sci_status isci_request_stp_request_construct( + struct isci_request *request) +{ + struct sas_task *task = isci_request_access_task(request); + enum sci_status status; + struct host_to_dev_fis *register_fis; + + dev_dbg(&request->isci_host->pdev->dev, + "%s: request = %p\n", + __func__, + request); + + /* Get the host_to_dev_fis from the core and copy + * the fis from the task into it. + */ + register_fis = isci_sata_task_to_fis_copy(task); + + status = scic_io_request_construct_basic_sata(&request->sci); + + /* Set the ncq tag in the fis, from the queue + * command in the task. + */ + if (isci_sata_is_task_ncq(task)) { + + isci_sata_set_ncq_tag( + register_fis, + task + ); + } + + return status; +} + +/* + * isci_smp_request_build() - This function builds the smp request. + * @ireq: This parameter points to the isci_request allocated in the + * request construct function. + * + * SCI_SUCCESS on successfull completion, or specific failure code. + */ +static enum sci_status isci_smp_request_build(struct isci_request *ireq) +{ + enum sci_status status = SCI_FAILURE; + struct sas_task *task = isci_request_access_task(ireq); + struct scic_sds_request *sci_req = &ireq->sci; + + dev_dbg(&ireq->isci_host->pdev->dev, + "%s: request = %p\n", __func__, ireq); + + dev_dbg(&ireq->isci_host->pdev->dev, + "%s: smp_req len = %d\n", + __func__, + task->smp_task.smp_req.length); + + /* copy the smp_command to the address; */ + sg_copy_to_buffer(&task->smp_task.smp_req, 1, + &sci_req->smp.cmd, + sizeof(struct smp_req)); + + status = scic_io_request_construct_smp(sci_req); + if (status != SCI_SUCCESS) + dev_warn(&ireq->isci_host->pdev->dev, + "%s: failed with status = %d\n", + __func__, + status); + + return status; +} + +/** + * isci_io_request_build() - This function builds the io request object. + * @isci_host: This parameter specifies the ISCI host object + * @request: This parameter points to the isci_request object allocated in the + * request construct function. + * @sci_device: This parameter is the handle for the sci core's remote device + * object that is the destination for this request. + * + * SCI_SUCCESS on successfull completion, or specific failure code. + */ +static enum sci_status isci_io_request_build( + struct isci_host *isci_host, + struct isci_request *request, + struct isci_remote_device *isci_device) +{ + enum sci_status status = SCI_SUCCESS; + struct sas_task *task = isci_request_access_task(request); + struct scic_sds_remote_device *sci_device = &isci_device->sci; + + dev_dbg(&isci_host->pdev->dev, + "%s: isci_device = 0x%p; request = %p, " + "num_scatter = %d\n", + __func__, + isci_device, + request, + task->num_scatter); + + /* map the sgl addresses, if present. + * libata does the mapping for sata devices + * before we get the request. + */ + if (task->num_scatter && + !sas_protocol_ata(task->task_proto) && + !(SAS_PROTOCOL_SMP & task->task_proto)) { + + request->num_sg_entries = dma_map_sg( + &isci_host->pdev->dev, + task->scatter, + task->num_scatter, + task->data_dir + ); + + if (request->num_sg_entries == 0) + return SCI_FAILURE_INSUFFICIENT_RESOURCES; + } + + /* build the common request object. For now, + * we will let the core allocate the IO tag. + */ + status = scic_io_request_construct(&isci_host->sci, sci_device, + SCI_CONTROLLER_INVALID_IO_TAG, + &request->sci); + + if (status != SCI_SUCCESS) { + dev_warn(&isci_host->pdev->dev, + "%s: failed request construct\n", + __func__); + return SCI_FAILURE; + } + + switch (task->task_proto) { + case SAS_PROTOCOL_SMP: + status = isci_smp_request_build(request); + break; + case SAS_PROTOCOL_SSP: + status = isci_request_ssp_request_construct(request); + break; + case SAS_PROTOCOL_SATA: + case SAS_PROTOCOL_STP: + case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: + status = isci_request_stp_request_construct(request); + break; + default: + dev_warn(&isci_host->pdev->dev, + "%s: unknown protocol\n", __func__); + return SCI_FAILURE; + } + + return SCI_SUCCESS; +} + +/** + * isci_request_alloc_core() - This function gets the request object from the + * isci_host dma cache. + * @isci_host: This parameter specifies the ISCI host object + * @isci_request: This parameter will contain the pointer to the new + * isci_request object. + * @isci_device: This parameter is the pointer to the isci remote device object + * that is the destination for this request. + * @gfp_flags: This parameter specifies the os allocation flags. + * + * SCI_SUCCESS on successfull completion, or specific failure code. + */ +static int isci_request_alloc_core( + struct isci_host *isci_host, + struct isci_request **isci_request, + struct isci_remote_device *isci_device, + gfp_t gfp_flags) +{ + int ret = 0; + dma_addr_t handle; + struct isci_request *request; + + + /* get pointer to dma memory. This actually points + * to both the isci_remote_device object and the + * sci object. The isci object is at the beginning + * of the memory allocated here. + */ + request = dma_pool_alloc(isci_host->dma_pool, gfp_flags, &handle); + if (!request) { + dev_warn(&isci_host->pdev->dev, + "%s: dma_pool_alloc returned NULL\n", __func__); + return -ENOMEM; + } + + /* initialize the request object. */ + spin_lock_init(&request->state_lock); + request->request_daddr = handle; + request->isci_host = isci_host; + request->isci_device = isci_device; + request->io_request_completion = NULL; + request->terminated = false; + + request->num_sg_entries = 0; + + request->complete_in_target = false; + + INIT_LIST_HEAD(&request->completed_node); + INIT_LIST_HEAD(&request->dev_node); + + *isci_request = request; + isci_request_change_state(request, allocated); + + return ret; +} + +static int isci_request_alloc_io( + struct isci_host *isci_host, + struct sas_task *task, + struct isci_request **isci_request, + struct isci_remote_device *isci_device, + gfp_t gfp_flags) +{ + int retval = isci_request_alloc_core(isci_host, isci_request, + isci_device, gfp_flags); + + if (!retval) { + (*isci_request)->ttype_ptr.io_task_ptr = task; + (*isci_request)->ttype = io_task; + + task->lldd_task = *isci_request; + } + return retval; +} + +/** + * isci_request_alloc_tmf() - This function gets the request object from the + * isci_host dma cache and initializes the relevant fields as a sas_task. + * @isci_host: This parameter specifies the ISCI host object + * @sas_task: This parameter is the task struct from the upper layer driver. + * @isci_request: This parameter will contain the pointer to the new + * isci_request object. + * @isci_device: This parameter is the pointer to the isci remote device object + * that is the destination for this request. + * @gfp_flags: This parameter specifies the os allocation flags. + * + * SCI_SUCCESS on successfull completion, or specific failure code. + */ +int isci_request_alloc_tmf( + struct isci_host *isci_host, + struct isci_tmf *isci_tmf, + struct isci_request **isci_request, + struct isci_remote_device *isci_device, + gfp_t gfp_flags) +{ + int retval = isci_request_alloc_core(isci_host, isci_request, + isci_device, gfp_flags); + + if (!retval) { + + (*isci_request)->ttype_ptr.tmf_task_ptr = isci_tmf; + (*isci_request)->ttype = tmf_task; + } + return retval; +} + +/** + * isci_request_execute() - This function allocates the isci_request object, + * all fills in some common fields. + * @isci_host: This parameter specifies the ISCI host object + * @sas_task: This parameter is the task struct from the upper layer driver. + * @isci_request: This parameter will contain the pointer to the new + * isci_request object. + * @gfp_flags: This parameter specifies the os allocation flags. + * + * SCI_SUCCESS on successfull completion, or specific failure code. + */ +int isci_request_execute( + struct isci_host *isci_host, + struct sas_task *task, + struct isci_request **isci_request, + gfp_t gfp_flags) +{ + int ret = 0; + struct scic_sds_remote_device *sci_device; + enum sci_status status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; + struct isci_remote_device *isci_device; + struct isci_request *request; + unsigned long flags; + + isci_device = task->dev->lldd_dev; + sci_device = &isci_device->sci; + + /* do common allocation and init of request object. */ + ret = isci_request_alloc_io( + isci_host, + task, + &request, + isci_device, + gfp_flags + ); + + if (ret) + goto out; + + status = isci_io_request_build(isci_host, request, isci_device); + if (status != SCI_SUCCESS) { + dev_warn(&isci_host->pdev->dev, + "%s: request_construct failed - status = 0x%x\n", + __func__, + status); + goto out; + } + + spin_lock_irqsave(&isci_host->scic_lock, flags); + + /* send the request, let the core assign the IO TAG. */ + status = scic_controller_start_io(&isci_host->sci, sci_device, + &request->sci, + SCI_CONTROLLER_INVALID_IO_TAG); + if (status != SCI_SUCCESS && + status != SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) { + dev_warn(&isci_host->pdev->dev, + "%s: failed request start (0x%x)\n", + __func__, status); + spin_unlock_irqrestore(&isci_host->scic_lock, flags); + goto out; + } + + /* Either I/O started OK, or the core has signaled that + * the device needs a target reset. + * + * In either case, hold onto the I/O for later. + * + * Update it's status and add it to the list in the + * remote device object. + */ + isci_request_change_state(request, started); + list_add(&request->dev_node, &isci_device->reqs_in_process); + + if (status == SCI_SUCCESS) { + /* Save the tag for possible task mgmt later. */ + request->io_tag = request->sci.io_tag; + } else { + /* The request did not really start in the + * hardware, so clear the request handle + * here so no terminations will be done. + */ + request->terminated = true; + } + spin_unlock_irqrestore(&isci_host->scic_lock, flags); + + if (status == + SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) { + /* Signal libsas that we need the SCSI error + * handler thread to work on this I/O and that + * we want a device reset. + */ + spin_lock_irqsave(&task->task_state_lock, flags); + task->task_state_flags |= SAS_TASK_NEED_DEV_RESET; + spin_unlock_irqrestore(&task->task_state_lock, flags); + + /* Cause this task to be scheduled in the SCSI error + * handler thread. + */ + isci_execpath_callback(isci_host, task, + sas_task_abort); + + /* Change the status, since we are holding + * the I/O until it is managed by the SCSI + * error handler. + */ + status = SCI_SUCCESS; + } + + out: + if (status != SCI_SUCCESS) { + /* release dma memory on failure. */ + isci_request_free(isci_host, request); + request = NULL; + ret = SCI_FAILURE; + } + + *isci_request = request; + return ret; +} + + + diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index 06786ece9bb2..932ea767c8c2 100644 --- a/drivers/scsi/isci/request.h +++ b/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_) */ diff --git a/drivers/scsi/isci/sata.c b/drivers/scsi/isci/sata.c index 08dabf08f7d7..b9b9271d4736 100644 --- a/drivers/scsi/isci/sata.c +++ b/drivers/scsi/isci/sata.c @@ -56,8 +56,6 @@ #include #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" diff --git a/drivers/scsi/isci/core/scic_sds_smp_request.c b/drivers/scsi/isci/smp_request.c similarity index 99% rename from drivers/scsi/isci/core/scic_sds_smp_request.c rename to drivers/scsi/isci/smp_request.c index 6a2b65b9cf0f..d4750a761c58 100644 --- a/drivers/scsi/isci/core/scic_sds_smp_request.c +++ b/drivers/scsi/isci/smp_request.c @@ -56,9 +56,7 @@ #include #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" diff --git a/drivers/scsi/isci/core/scic_sds_ssp_request.c b/drivers/scsi/isci/ssp_request.c similarity index 99% rename from drivers/scsi/isci/core/scic_sds_ssp_request.c rename to drivers/scsi/isci/ssp_request.c index 3fdf68be7a4d..4b6317aeef7d 100644 --- a/drivers/scsi/isci/core/scic_sds_ssp_request.c +++ b/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 diff --git a/drivers/scsi/isci/core/scic_sds_stp_request.c b/drivers/scsi/isci/stp_request.c similarity index 99% rename from drivers/scsi/isci/core/scic_sds_stp_request.c rename to drivers/scsi/isci/stp_request.c index 308f486514e9..298086afa5aa 100644 --- a/drivers/scsi/isci/core/scic_sds_stp_request.c +++ b/drivers/scsi/isci/stp_request.c @@ -56,13 +56,9 @@ #include #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" diff --git a/drivers/scsi/isci/core/scic_sds_stp_request.h b/drivers/scsi/isci/stp_request.h similarity index 77% rename from drivers/scsi/isci/core/scic_sds_stp_request.h rename to drivers/scsi/isci/stp_request.h index f5434f12ad06..eb14874ceda3 100644 --- a/drivers/scsi/isci/core/scic_sds_stp_request.h +++ b/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); +/* 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, -enum sci_status scic_sds_stp_pio_request_construct( - struct scic_sds_request *scic_io_request, - bool copy_rx_frame); + /** + * 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, -enum sci_status scic_sds_stp_udma_request_construct( - struct scic_sds_request *sci_req, - u32 transfer_length, - enum dma_data_direction dir); + /** + * 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, -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); + /** + * 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_ */ diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 2a8603881929..078e2ee4f4be 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -56,15 +56,12 @@ #include #include #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" /** diff --git a/drivers/scsi/isci/unsolicited_frame_control.c b/drivers/scsi/isci/unsolicited_frame_control.c index 8d68dcc52bc1..12e676346386 100644 --- a/drivers/scsi/isci/unsolicited_frame_control.c +++ b/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; }