diff options
Diffstat (limited to 'drivers/scsi/isci/task.h')
| -rw-r--r-- | drivers/scsi/isci/task.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/drivers/scsi/isci/task.h b/drivers/scsi/isci/task.h new file mode 100644 index 000000000..f96633fa6 --- /dev/null +++ b/drivers/scsi/isci/task.h @@ -0,0 +1,181 @@ +/* + * 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 _ISCI_TASK_H_ +#define _ISCI_TASK_H_ + +#include <scsi/sas_ata.h> +#include "host.h" + +#define ISCI_TERMINATION_TIMEOUT_MSEC 500 + +struct isci_request; + +/** + * enum isci_tmf_function_codes - This enum defines the possible preparations + * of task management requests. + * + * + */ +enum isci_tmf_function_codes { + + isci_tmf_func_none = 0, + isci_tmf_ssp_task_abort = TMF_ABORT_TASK, + isci_tmf_ssp_lun_reset = TMF_LU_RESET, +}; + +/** + * struct isci_tmf - This class represents the task management object which + * acts as an interface to libsas for processing task management requests + * + * + */ +struct isci_tmf { + + struct completion *complete; + enum sas_protocol proto; + union { + struct ssp_response_iu resp_iu; + struct dev_to_host_fis d2h_fis; + u8 rsp_buf[SSP_RESP_IU_MAX_SIZE]; + } resp; + unsigned char lun[8]; + u16 io_tag; + enum isci_tmf_function_codes tmf_code; + int status; +}; + +static inline void isci_print_tmf(struct isci_host *ihost, struct isci_tmf *tmf) +{ + if (SAS_PROTOCOL_SATA == tmf->proto) + dev_dbg(&ihost->pdev->dev, + "%s: status = %x\n" + "tmf->resp.d2h_fis.status = %x\n" + "tmf->resp.d2h_fis.error = %x\n", + __func__, + tmf->status, + tmf->resp.d2h_fis.status, + tmf->resp.d2h_fis.error); + else + dev_dbg(&ihost->pdev->dev, + "%s: status = %x\n" + "tmf->resp.resp_iu.data_present = %x\n" + "tmf->resp.resp_iu.status = %x\n" + "tmf->resp.resp_iu.data_length = %x\n" + "tmf->resp.resp_iu.data[0] = %x\n" + "tmf->resp.resp_iu.data[1] = %x\n" + "tmf->resp.resp_iu.data[2] = %x\n" + "tmf->resp.resp_iu.data[3] = %x\n", + __func__, + tmf->status, + tmf->resp.resp_iu.datapres, + tmf->resp.resp_iu.status, + be32_to_cpu(tmf->resp.resp_iu.response_data_len), + tmf->resp.resp_iu.resp_data[0], + tmf->resp.resp_iu.resp_data[1], + tmf->resp.resp_iu.resp_data[2], + tmf->resp.resp_iu.resp_data[3]); +} + + +int isci_task_execute_task( + struct sas_task *task, + gfp_t gfp_flags); + +int isci_task_abort_task( + struct sas_task *task); + +int isci_task_abort_task_set( + struct domain_device *d_device, + u8 *lun); + +int isci_task_clear_task_set( + struct domain_device *d_device, + u8 *lun); + +int isci_task_query_task( + struct sas_task *task); + +int isci_task_lu_reset( + struct domain_device *d_device, + u8 *lun); + +int isci_task_clear_nexus_port( + struct asd_sas_port *port); + +int isci_task_clear_nexus_ha( + struct sas_ha_struct *ha); + +int isci_task_I_T_nexus_reset( + struct domain_device *d_device); + +void isci_task_request_complete( + struct isci_host *isci_host, + struct isci_request *request, + enum sci_task_status completion_status); + +u16 isci_task_ssp_request_get_io_tag_to_manage( + struct isci_request *request); + +u8 isci_task_ssp_request_get_function( + struct isci_request *request); + + +void *isci_task_ssp_request_get_response_data_address( + struct isci_request *request); + +u32 isci_task_ssp_request_get_response_data_length( + struct isci_request *request); + +#endif /* !defined(_SCI_TASK_H_) */ |