task.h (5566B)
1/* 2 * This file is provided under a dual BSD/GPLv2 license. When using or 3 * redistributing this file, you may do so under either license. 4 * 5 * GPL LICENSE SUMMARY 6 * 7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 21 * The full GNU General Public License is included in this distribution 22 * in the file called LICENSE.GPL. 23 * 24 * BSD LICENSE 25 * 26 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 27 * All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 33 * * Redistributions of source code must retain the above copyright 34 * notice, this list of conditions and the following disclaimer. 35 * * Redistributions in binary form must reproduce the above copyright 36 * notice, this list of conditions and the following disclaimer in 37 * the documentation and/or other materials provided with the 38 * distribution. 39 * * Neither the name of Intel Corporation nor the names of its 40 * contributors may be used to endorse or promote products derived 41 * from this software without specific prior written permission. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 */ 55#ifndef _ISCI_TASK_H_ 56#define _ISCI_TASK_H_ 57 58#include <scsi/sas_ata.h> 59#include "host.h" 60 61#define ISCI_TERMINATION_TIMEOUT_MSEC 500 62 63struct isci_request; 64 65/** 66 * enum isci_tmf_function_codes - This enum defines the possible preparations 67 * of task management requests. 68 * 69 * 70 */ 71enum isci_tmf_function_codes { 72 73 isci_tmf_func_none = 0, 74 isci_tmf_ssp_task_abort = TMF_ABORT_TASK, 75 isci_tmf_ssp_lun_reset = TMF_LU_RESET, 76}; 77 78/** 79 * struct isci_tmf - This class represents the task management object which 80 * acts as an interface to libsas for processing task management requests 81 * 82 * 83 */ 84struct isci_tmf { 85 86 struct completion *complete; 87 enum sas_protocol proto; 88 union { 89 struct ssp_response_iu resp_iu; 90 struct dev_to_host_fis d2h_fis; 91 u8 rsp_buf[SSP_RESP_IU_MAX_SIZE]; 92 } resp; 93 unsigned char lun[8]; 94 u16 io_tag; 95 enum isci_tmf_function_codes tmf_code; 96 int status; 97}; 98 99static inline void isci_print_tmf(struct isci_host *ihost, struct isci_tmf *tmf) 100{ 101 if (SAS_PROTOCOL_SATA == tmf->proto) 102 dev_dbg(&ihost->pdev->dev, 103 "%s: status = %x\n" 104 "tmf->resp.d2h_fis.status = %x\n" 105 "tmf->resp.d2h_fis.error = %x\n", 106 __func__, 107 tmf->status, 108 tmf->resp.d2h_fis.status, 109 tmf->resp.d2h_fis.error); 110 else 111 dev_dbg(&ihost->pdev->dev, 112 "%s: status = %x\n" 113 "tmf->resp.resp_iu.data_present = %x\n" 114 "tmf->resp.resp_iu.status = %x\n" 115 "tmf->resp.resp_iu.data_length = %x\n" 116 "tmf->resp.resp_iu.data[0] = %x\n" 117 "tmf->resp.resp_iu.data[1] = %x\n" 118 "tmf->resp.resp_iu.data[2] = %x\n" 119 "tmf->resp.resp_iu.data[3] = %x\n", 120 __func__, 121 tmf->status, 122 tmf->resp.resp_iu.datapres, 123 tmf->resp.resp_iu.status, 124 be32_to_cpu(tmf->resp.resp_iu.response_data_len), 125 tmf->resp.resp_iu.resp_data[0], 126 tmf->resp.resp_iu.resp_data[1], 127 tmf->resp.resp_iu.resp_data[2], 128 tmf->resp.resp_iu.resp_data[3]); 129} 130 131 132int isci_task_execute_task( 133 struct sas_task *task, 134 gfp_t gfp_flags); 135 136int isci_task_abort_task( 137 struct sas_task *task); 138 139int isci_task_abort_task_set( 140 struct domain_device *d_device, 141 u8 *lun); 142 143int isci_task_clear_task_set( 144 struct domain_device *d_device, 145 u8 *lun); 146 147int isci_task_query_task( 148 struct sas_task *task); 149 150int isci_task_lu_reset( 151 struct domain_device *d_device, 152 u8 *lun); 153 154int isci_task_clear_nexus_port( 155 struct asd_sas_port *port); 156 157int isci_task_clear_nexus_ha( 158 struct sas_ha_struct *ha); 159 160int isci_task_I_T_nexus_reset( 161 struct domain_device *d_device); 162 163void isci_task_request_complete( 164 struct isci_host *isci_host, 165 struct isci_request *request, 166 enum sci_task_status completion_status); 167 168u16 isci_task_ssp_request_get_io_tag_to_manage( 169 struct isci_request *request); 170 171u8 isci_task_ssp_request_get_function( 172 struct isci_request *request); 173 174 175void *isci_task_ssp_request_get_response_data_address( 176 struct isci_request *request); 177 178u32 isci_task_ssp_request_get_response_data_length( 179 struct isci_request *request); 180 181#endif /* !defined(_SCI_TASK_H_) */