diff options
Diffstat (limited to 'drivers/scsi/isci/core/scic_sds_stp_request.h')
| -rw-r--r-- | drivers/scsi/isci/core/scic_sds_stp_request.h | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/drivers/scsi/isci/core/scic_sds_stp_request.h b/drivers/scsi/isci/core/scic_sds_stp_request.h new file mode 100644 index 000000000000..5578d2baf7ca --- /dev/null +++ b/drivers/scsi/isci/core/scic_sds_stp_request.h @@ -0,0 +1,221 @@ +/* + * 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_REQUEST_T_ +#define _SCIC_SDS_STP_REQUEST_T_ + +#include "intel_sata.h" +#include "sci_types.h" +#include "scic_sds_request.h" + +/** + * This structure represents the additional information that is required to + * handle SATA PIO requests. + * + * + */ +struct scic_sds_stp_request { + struct scic_sds_request parent; + + struct sata_fis_reg_d2h d2h_reg_fis; + + union { + u32 ncq; + + u32 udma; + + struct { + /** + * Total transfer for the entire PIO request recorded at request constuction + * time. + * + * @todo Should we just decrement this value for each byte of data transitted + * or received to elemenate the current_transfer_bytes field? + */ + u32 total_transfer_bytes; + + /** + * Total number of bytes received/transmitted in data frames since the start + * of the IO request. At the end of the IO request this should equal the + * total_transfer_bytes. + */ + u32 current_transfer_bytes; + + /** + * The number of bytes requested in the in the PIO setup. + */ + u32 pio_transfer_bytes; + + /** + * PIO Setup ending status value to tell us if we need to wait for another FIS + * or if the transfer is complete. On the receipt of a D2H FIS this will be + * the status field of that FIS. + */ + u8 ending_status; + + /** + * On receipt of a D2H FIS this will be the ending error field if the + * ending_status has the SATA_STATUS_ERR bit set. + */ + u8 ending_error; + + /** + * Protocol Type. This is filled in by core during IO Request construction type. + */ + u8 sat_protocol; + + struct { + struct scu_sgl_element_pair *sgl_pair; + u8 sgl_set; + u32 sgl_offset; + } request_current; + } pio; + + struct { + /** + * The number of bytes requested in the PIO setup before CDB data frame. + */ + u32 device_preferred_cdb_length; + } packet; + } type; + +}; + +/** + * enum SCIC_SDS_STP_REQUEST_STARTED_UDMA_SUBSTATES - This enumeration depicts + * the various sub-states associated with a SATA/STP UDMA protocol operation. + * + * + */ +enum SCIC_SDS_STP_REQUEST_STARTED_UDMA_SUBSTATES { + SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_TC_COMPLETION_SUBSTATE, + SCIC_SDS_STP_REQUEST_STARTED_UDMA_AWAIT_D2H_REG_FIS_SUBSTATE, +}; + +/** + * enum SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_SUBSTATES - This enumeration + * depicts the various sub-states associated with a SATA/STP non-data + * protocol operation. + * + * + */ +enum SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_SUBSTATES { + SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_H2D_COMPLETION_SUBSTATE, + SCIC_SDS_STP_REQUEST_STARTED_NON_DATA_AWAIT_D2H_SUBSTATE, +}; + +/** + * enum SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_SUBSTATES - THis enumeration + * depicts the various sub-states associated with a SATA/STP soft reset + * operation. + * + * + */ +enum SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_SUBSTATES { + SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_ASSERTED_COMPLETION_SUBSTATE, + SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_H2D_DIAGNOSTIC_COMPLETION_SUBSTATE, + SCIC_SDS_STP_REQUEST_STARTED_SOFT_RESET_AWAIT_D2H_RESPONSE_FRAME_SUBSTATE, +}; + +extern const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_udma_substate_handler_table[]; + +extern const struct sci_base_state scic_sds_stp_request_started_udma_substate_table[]; + +extern const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_non_data_substate_handler_table[]; + +extern const struct sci_base_state scic_sds_stp_request_started_non_data_substate_table[]; + +extern const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_soft_reset_substate_handler_table[]; + +extern const struct sci_base_state scic_sds_stp_request_started_soft_reset_substate_table[]; + +/* --------------------------------------------------------------------------- */ + +u32 scic_sds_stp_request_get_object_size(void); + + +void scic_sds_stp_non_ncq_request_construct( + struct scic_sds_request *this_request); + +enum sci_status scic_sds_stp_pio_request_construct( + struct scic_sds_request *scic_io_request, + u8 sat_protocol, + bool copy_rx_frame); + +enum sci_status scic_sds_stp_pio_request_construct_pass_through( + struct scic_sds_request *scic_io_request, + struct scic_stp_passthru_request_callbacks *passthru_cb); + +enum sci_status scic_sds_stp_udma_request_construct( + struct scic_sds_request *this_request, + u32 transfer_length, + SCI_IO_REQUEST_DATA_DIRECTION data_direction); + +enum sci_status scic_sds_stp_non_data_request_construct( + struct scic_sds_request *this_request); + +enum sci_status scic_sds_stp_soft_reset_request_construct( + struct scic_sds_request *this_request); + +enum sci_status scic_sds_stp_ncq_request_construct( + struct scic_sds_request *this_request, + u32 transfer_length, + SCI_IO_REQUEST_DATA_DIRECTION data_direction); + +void scu_stp_raw_request_construct_task_context( + struct scic_sds_stp_request *this_request, + struct scu_task_context *task_context); + +#endif /* _SCIC_SDS_STP_REQUEST_T_ */ |