16f231dda68080759f1aed3769896e94c73099f0fDan Williams/* 26f231dda68080759f1aed3769896e94c73099f0fDan Williams * This file is provided under a dual BSD/GPLv2 license. When using or 36f231dda68080759f1aed3769896e94c73099f0fDan Williams * redistributing this file, you may do so under either license. 46f231dda68080759f1aed3769896e94c73099f0fDan Williams * 56f231dda68080759f1aed3769896e94c73099f0fDan Williams * GPL LICENSE SUMMARY 66f231dda68080759f1aed3769896e94c73099f0fDan Williams * 76f231dda68080759f1aed3769896e94c73099f0fDan Williams * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 86f231dda68080759f1aed3769896e94c73099f0fDan Williams * 96f231dda68080759f1aed3769896e94c73099f0fDan Williams * This program is free software; you can redistribute it and/or modify 106f231dda68080759f1aed3769896e94c73099f0fDan Williams * it under the terms of version 2 of the GNU General Public License as 116f231dda68080759f1aed3769896e94c73099f0fDan Williams * published by the Free Software Foundation. 126f231dda68080759f1aed3769896e94c73099f0fDan Williams * 136f231dda68080759f1aed3769896e94c73099f0fDan Williams * This program is distributed in the hope that it will be useful, but 146f231dda68080759f1aed3769896e94c73099f0fDan Williams * WITHOUT ANY WARRANTY; without even the implied warranty of 156f231dda68080759f1aed3769896e94c73099f0fDan Williams * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 166f231dda68080759f1aed3769896e94c73099f0fDan Williams * General Public License for more details. 176f231dda68080759f1aed3769896e94c73099f0fDan Williams * 186f231dda68080759f1aed3769896e94c73099f0fDan Williams * You should have received a copy of the GNU General Public License 196f231dda68080759f1aed3769896e94c73099f0fDan Williams * along with this program; if not, write to the Free Software 206f231dda68080759f1aed3769896e94c73099f0fDan Williams * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 216f231dda68080759f1aed3769896e94c73099f0fDan Williams * The full GNU General Public License is included in this distribution 226f231dda68080759f1aed3769896e94c73099f0fDan Williams * in the file called LICENSE.GPL. 236f231dda68080759f1aed3769896e94c73099f0fDan Williams * 246f231dda68080759f1aed3769896e94c73099f0fDan Williams * BSD LICENSE 256f231dda68080759f1aed3769896e94c73099f0fDan Williams * 266f231dda68080759f1aed3769896e94c73099f0fDan Williams * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 276f231dda68080759f1aed3769896e94c73099f0fDan Williams * All rights reserved. 286f231dda68080759f1aed3769896e94c73099f0fDan Williams * 296f231dda68080759f1aed3769896e94c73099f0fDan Williams * Redistribution and use in source and binary forms, with or without 306f231dda68080759f1aed3769896e94c73099f0fDan Williams * modification, are permitted provided that the following conditions 316f231dda68080759f1aed3769896e94c73099f0fDan Williams * are met: 326f231dda68080759f1aed3769896e94c73099f0fDan Williams * 336f231dda68080759f1aed3769896e94c73099f0fDan Williams * * Redistributions of source code must retain the above copyright 346f231dda68080759f1aed3769896e94c73099f0fDan Williams * notice, this list of conditions and the following disclaimer. 356f231dda68080759f1aed3769896e94c73099f0fDan Williams * * Redistributions in binary form must reproduce the above copyright 366f231dda68080759f1aed3769896e94c73099f0fDan Williams * notice, this list of conditions and the following disclaimer in 376f231dda68080759f1aed3769896e94c73099f0fDan Williams * the documentation and/or other materials provided with the 386f231dda68080759f1aed3769896e94c73099f0fDan Williams * distribution. 396f231dda68080759f1aed3769896e94c73099f0fDan Williams * * Neither the name of Intel Corporation nor the names of its 406f231dda68080759f1aed3769896e94c73099f0fDan Williams * contributors may be used to endorse or promote products derived 416f231dda68080759f1aed3769896e94c73099f0fDan Williams * from this software without specific prior written permission. 426f231dda68080759f1aed3769896e94c73099f0fDan Williams * 436f231dda68080759f1aed3769896e94c73099f0fDan Williams * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 446f231dda68080759f1aed3769896e94c73099f0fDan Williams * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 456f231dda68080759f1aed3769896e94c73099f0fDan Williams * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 466f231dda68080759f1aed3769896e94c73099f0fDan Williams * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 476f231dda68080759f1aed3769896e94c73099f0fDan Williams * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 486f231dda68080759f1aed3769896e94c73099f0fDan Williams * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 496f231dda68080759f1aed3769896e94c73099f0fDan Williams * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 506f231dda68080759f1aed3769896e94c73099f0fDan Williams * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 516f231dda68080759f1aed3769896e94c73099f0fDan Williams * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 526f231dda68080759f1aed3769896e94c73099f0fDan Williams * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 536f231dda68080759f1aed3769896e94c73099f0fDan Williams * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 546f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 556f231dda68080759f1aed3769896e94c73099f0fDan Williams 566f231dda68080759f1aed3769896e94c73099f0fDan Williams#include <linux/completion.h> 5750e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams#include <linux/irqflags.h> 58af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiang#include "sas.h" 5961aaff49e20fdb700f1300a49962bc76effc77fcJeff Skirvin#include <scsi/libsas.h> 6088f3b62ac131e2549b6c262cacbd47e8cca42d6eDan Williams#include "remote_device.h" 6188f3b62ac131e2549b6c262cacbd47e8cca42d6eDan Williams#include "remote_node_context.h" 626f231dda68080759f1aed3769896e94c73099f0fDan Williams#include "isci.h" 636f231dda68080759f1aed3769896e94c73099f0fDan Williams#include "request.h" 646f231dda68080759f1aed3769896e94c73099f0fDan Williams#include "task.h" 65312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams#include "host.h" 66af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiang 6750e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams/** 681077a574103177bff22b7cdd155d960f46ac1e8fDan Williams* isci_task_refuse() - complete the request to the upper layer driver in 691077a574103177bff22b7cdd155d960f46ac1e8fDan Williams* the case where an I/O needs to be completed back in the submit path. 701077a574103177bff22b7cdd155d960f46ac1e8fDan Williams* @ihost: host on which the the request was queued 711077a574103177bff22b7cdd155d960f46ac1e8fDan Williams* @task: request to complete 721077a574103177bff22b7cdd155d960f46ac1e8fDan Williams* @response: response code for the completed task. 731077a574103177bff22b7cdd155d960f46ac1e8fDan Williams* @status: status code for the completed task. 7450e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams* 7550e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams*/ 761077a574103177bff22b7cdd155d960f46ac1e8fDan Williamsstatic void isci_task_refuse(struct isci_host *ihost, struct sas_task *task, 771077a574103177bff22b7cdd155d960f46ac1e8fDan Williams enum service_response response, 781077a574103177bff22b7cdd155d960f46ac1e8fDan Williams enum exec_status status) 791077a574103177bff22b7cdd155d960f46ac1e8fDan Williams 8050e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams{ 811077a574103177bff22b7cdd155d960f46ac1e8fDan Williams enum isci_completion_selection disposition; 8250e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams 831077a574103177bff22b7cdd155d960f46ac1e8fDan Williams disposition = isci_perform_normal_io_completion; 841077a574103177bff22b7cdd155d960f46ac1e8fDan Williams disposition = isci_task_set_completion_status(task, response, status, 851077a574103177bff22b7cdd155d960f46ac1e8fDan Williams disposition); 8650e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams 8750e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams /* Tasks aborted specifically by a call to the lldd_abort_task 881077a574103177bff22b7cdd155d960f46ac1e8fDan Williams * function should not be completed to the host in the regular path. 891077a574103177bff22b7cdd155d960f46ac1e8fDan Williams */ 901077a574103177bff22b7cdd155d960f46ac1e8fDan Williams switch (disposition) { 91a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley case isci_perform_normal_io_completion: 92a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley /* Normal notification (task_done) */ 93a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley dev_dbg(&ihost->pdev->dev, 94a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley "%s: Normal - task = %p, response=%d, " 95a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley "status=%d\n", 96a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley __func__, task, response, status); 9750e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams 98a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley task->lldd_task = NULL; 99312d3e56119a4bc5c36a96818f87f650c069ddc2Dan Williams task->task_done(task); 100a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley break; 10150e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams 102a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley case isci_perform_aborted_io_completion: 103a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley /* 104a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley * No notification because this request is already in the 105a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley * abort path. 106a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley */ 107a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley dev_dbg(&ihost->pdev->dev, 108a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley "%s: Aborted - task = %p, response=%d, " 109a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley "status=%d\n", 110a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley __func__, task, response, status); 111a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley break; 11250e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams 113a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley case isci_perform_error_io_completion: 114a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley /* Use sas_task_abort */ 115a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley dev_dbg(&ihost->pdev->dev, 116a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley "%s: Error - task = %p, response=%d, " 117a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley "status=%d\n", 118a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley __func__, task, response, status); 119312d3e56119a4bc5c36a96818f87f650c069ddc2Dan Williams sas_task_abort(task); 120a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley break; 12150e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams 122a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley default: 123a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley dev_dbg(&ihost->pdev->dev, 124a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley "%s: isci task notification default case!", 125a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley __func__); 126a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley sas_task_abort(task); 127a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley break; 12850e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams } 12950e7f9b5a9ae4a763b2c27500807cf237faca9b0Dan Williams} 1306f231dda68080759f1aed3769896e94c73099f0fDan Williams 1311077a574103177bff22b7cdd155d960f46ac1e8fDan Williams#define for_each_sas_task(num, task) \ 1321077a574103177bff22b7cdd155d960f46ac1e8fDan Williams for (; num > 0; num--,\ 1331077a574103177bff22b7cdd155d960f46ac1e8fDan Williams task = list_entry(task->list.next, struct sas_task, list)) 1341077a574103177bff22b7cdd155d960f46ac1e8fDan Williams 1359274f45ea551421cd3bf329de9dd8d1e6208285aJeff Skirvin 1369274f45ea551421cd3bf329de9dd8d1e6208285aJeff Skirvinstatic inline int isci_device_io_ready(struct isci_remote_device *idev, 1379274f45ea551421cd3bf329de9dd8d1e6208285aJeff Skirvin struct sas_task *task) 1389274f45ea551421cd3bf329de9dd8d1e6208285aJeff Skirvin{ 1399274f45ea551421cd3bf329de9dd8d1e6208285aJeff Skirvin return idev ? test_bit(IDEV_IO_READY, &idev->flags) || 1409274f45ea551421cd3bf329de9dd8d1e6208285aJeff Skirvin (test_bit(IDEV_IO_NCQERROR, &idev->flags) && 1419274f45ea551421cd3bf329de9dd8d1e6208285aJeff Skirvin isci_task_is_ncq_recovery(task)) 1429274f45ea551421cd3bf329de9dd8d1e6208285aJeff Skirvin : 0; 1439274f45ea551421cd3bf329de9dd8d1e6208285aJeff Skirvin} 1446f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 1456f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_task_execute_task() - This function is one of the SAS Domain Template 1466f231dda68080759f1aed3769896e94c73099f0fDan Williams * functions. This function is called by libsas to send a task down to 1476f231dda68080759f1aed3769896e94c73099f0fDan Williams * hardware. 1486f231dda68080759f1aed3769896e94c73099f0fDan Williams * @task: This parameter specifies the SAS task to send. 1496f231dda68080759f1aed3769896e94c73099f0fDan Williams * @num: This parameter specifies the number of tasks to queue. 1506f231dda68080759f1aed3769896e94c73099f0fDan Williams * @gfp_flags: This parameter specifies the context of this call. 1516f231dda68080759f1aed3769896e94c73099f0fDan Williams * 1526f231dda68080759f1aed3769896e94c73099f0fDan Williams * status, zero indicates success. 1536f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 1546f231dda68080759f1aed3769896e94c73099f0fDan Williamsint isci_task_execute_task(struct sas_task *task, int num, gfp_t gfp_flags) 1556f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 1564393aa4e6b9517a666f0ef6b774fd421a9dc4c68Dan Williams struct isci_host *ihost = dev_to_ihost(task->dev); 157209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams struct isci_remote_device *idev; 1586f231dda68080759f1aed3769896e94c73099f0fDan Williams unsigned long flags; 159f2088267514b39af1a94409168101527769a911cDan Williams bool io_ready; 160312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams u16 tag; 1616f231dda68080759f1aed3769896e94c73099f0fDan Williams 1621077a574103177bff22b7cdd155d960f46ac1e8fDan Williams dev_dbg(&ihost->pdev->dev, "%s: num=%d\n", __func__, num); 1636f231dda68080759f1aed3769896e94c73099f0fDan Williams 1641077a574103177bff22b7cdd155d960f46ac1e8fDan Williams for_each_sas_task(num, task) { 165312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams enum sci_status status = SCI_FAILURE; 166312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams 167209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 168209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams idev = isci_lookup_device(task->dev); 1699274f45ea551421cd3bf329de9dd8d1e6208285aJeff Skirvin io_ready = isci_device_io_ready(idev, task); 170312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams tag = isci_alloc_tag(ihost); 171209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 1726f231dda68080759f1aed3769896e94c73099f0fDan Williams 173f2088267514b39af1a94409168101527769a911cDan Williams dev_dbg(&ihost->pdev->dev, 174f2088267514b39af1a94409168101527769a911cDan Williams "task: %p, num: %d dev: %p idev: %p:%#lx cmd = %p\n", 175f2088267514b39af1a94409168101527769a911cDan Williams task, num, task->dev, idev, idev ? idev->flags : 0, 176f2088267514b39af1a94409168101527769a911cDan Williams task->uldd_task); 1776f231dda68080759f1aed3769896e94c73099f0fDan Williams 178f2088267514b39af1a94409168101527769a911cDan Williams if (!idev) { 179f2088267514b39af1a94409168101527769a911cDan Williams isci_task_refuse(ihost, task, SAS_TASK_UNDELIVERED, 180f2088267514b39af1a94409168101527769a911cDan Williams SAS_DEVICE_UNKNOWN); 181312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams } else if (!io_ready || tag == SCI_CONTROLLER_INVALID_IO_TAG) { 182f2088267514b39af1a94409168101527769a911cDan Williams /* Indicate QUEUE_FULL so that the scsi midlayer 183f2088267514b39af1a94409168101527769a911cDan Williams * retries. 184f2088267514b39af1a94409168101527769a911cDan Williams */ 185f2088267514b39af1a94409168101527769a911cDan Williams isci_task_refuse(ihost, task, SAS_TASK_COMPLETE, 186f2088267514b39af1a94409168101527769a911cDan Williams SAS_QUEUE_FULL); 187f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin } else { 188f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin /* There is a device and it's ready for I/O. */ 189f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin spin_lock_irqsave(&task->task_state_lock, flags); 1906f231dda68080759f1aed3769896e94c73099f0fDan Williams 191f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin if (task->task_state_flags & SAS_TASK_STATE_ABORTED) { 192f2088267514b39af1a94409168101527769a911cDan Williams /* The I/O was aborted. */ 193f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin spin_unlock_irqrestore(&task->task_state_lock, 194f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin flags); 1956f231dda68080759f1aed3769896e94c73099f0fDan Williams 1961077a574103177bff22b7cdd155d960f46ac1e8fDan Williams isci_task_refuse(ihost, task, 1971077a574103177bff22b7cdd155d960f46ac1e8fDan Williams SAS_TASK_UNDELIVERED, 1981077a574103177bff22b7cdd155d960f46ac1e8fDan Williams SAM_STAT_TASK_ABORTED); 199f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin } else { 2006f231dda68080759f1aed3769896e94c73099f0fDan Williams task->task_state_flags |= SAS_TASK_AT_INITIATOR; 2016f231dda68080759f1aed3769896e94c73099f0fDan Williams spin_unlock_irqrestore(&task->task_state_lock, flags); 202f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin 203f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin /* build and send the request. */ 204db0562509800a2d4cb5cb14a66413c30484f165cDan Williams status = isci_request_execute(ihost, idev, task, tag); 205f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin 206f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin if (status != SCI_SUCCESS) { 207f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin 208f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin spin_lock_irqsave(&task->task_state_lock, flags); 209f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin /* Did not really start this command. */ 210f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin task->task_state_flags &= ~SAS_TASK_AT_INITIATOR; 211f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin spin_unlock_irqrestore(&task->task_state_lock, flags); 212f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin 213c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin if (test_bit(IDEV_GONE, &idev->flags)) { 214c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin 215c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin /* Indicate that the device 216c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin * is gone. 217c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin */ 218c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin isci_task_refuse(ihost, task, 219c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin SAS_TASK_UNDELIVERED, 220c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin SAS_DEVICE_UNKNOWN); 221c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin } else { 222c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin /* Indicate QUEUE_FULL so that 223c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin * the scsi midlayer retries. 224c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin * If the request failed for 225c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin * remote device reasons, it 226c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin * gets returned as 227c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin * SAS_TASK_UNDELIVERED next 228c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin * time through. 229c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin */ 230c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin isci_task_refuse(ihost, task, 231c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin SAS_TASK_COMPLETE, 232c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin SAS_QUEUE_FULL); 233c2cb8a5fd7d5d8729a4fc25937c4d6564f9a7aa3Jeff Skirvin } 234f0846c68912545d70da16b2fbedded37ea4394d8Jeff Skirvin } 2356f231dda68080759f1aed3769896e94c73099f0fDan Williams } 2366f231dda68080759f1aed3769896e94c73099f0fDan Williams } 237312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams if (status != SCI_SUCCESS && tag != SCI_CONTROLLER_INVALID_IO_TAG) { 238312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 239312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams /* command never hit the device, so just free 240312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams * the tci and skip the sequence increment 241312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams */ 242312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams isci_tci_free(ihost, ISCI_TAG_TCI(tag)); 243312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 244312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams } 245209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams isci_put_device(idev); 2461077a574103177bff22b7cdd155d960f46ac1e8fDan Williams } 2476f231dda68080759f1aed3769896e94c73099f0fDan Williams return 0; 2486f231dda68080759f1aed3769896e94c73099f0fDan Williams} 2496f231dda68080759f1aed3769896e94c73099f0fDan Williams 2500d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williamsstatic struct isci_request *isci_task_request_build(struct isci_host *ihost, 251209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams struct isci_remote_device *idev, 252312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams u16 tag, struct isci_tmf *isci_tmf) 2536f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 2546f231dda68080759f1aed3769896e94c73099f0fDan Williams enum sci_status status = SCI_FAILURE; 2550d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams struct isci_request *ireq = NULL; 256a1a113b0a1ea437daf099b44f8a39e93a02a3f47Dan Williams struct domain_device *dev; 2576f231dda68080759f1aed3769896e94c73099f0fDan Williams 2580d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams dev_dbg(&ihost->pdev->dev, 2596f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: isci_tmf = %p\n", __func__, isci_tmf); 2606f231dda68080759f1aed3769896e94c73099f0fDan Williams 2610d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams dev = idev->domain_dev; 2626f231dda68080759f1aed3769896e94c73099f0fDan Williams 2636f231dda68080759f1aed3769896e94c73099f0fDan Williams /* do common allocation and init of request object. */ 264db0562509800a2d4cb5cb14a66413c30484f165cDan Williams ireq = isci_tmf_request_from_tag(ihost, isci_tmf, tag); 2650d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams if (!ireq) 2660d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams return NULL; 2676f231dda68080759f1aed3769896e94c73099f0fDan Williams 2686f231dda68080759f1aed3769896e94c73099f0fDan Williams /* let the core do it's construct. */ 26989a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams status = sci_task_request_construct(ihost, idev, tag, 2705076a1a97e2fa61c847a5fdd4b1991faf7716da6Dan Williams ireq); 2716f231dda68080759f1aed3769896e94c73099f0fDan Williams 2726f231dda68080759f1aed3769896e94c73099f0fDan Williams if (status != SCI_SUCCESS) { 2730d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams dev_warn(&ihost->pdev->dev, 27489a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams "%s: sci_task_request_construct failed - " 2756f231dda68080759f1aed3769896e94c73099f0fDan Williams "status = 0x%x\n", 2766f231dda68080759f1aed3769896e94c73099f0fDan Williams __func__, 2776f231dda68080759f1aed3769896e94c73099f0fDan Williams status); 278db0562509800a2d4cb5cb14a66413c30484f165cDan Williams return NULL; 2796f231dda68080759f1aed3769896e94c73099f0fDan Williams } 2806f231dda68080759f1aed3769896e94c73099f0fDan Williams 281a1a113b0a1ea437daf099b44f8a39e93a02a3f47Dan Williams /* XXX convert to get this from task->tproto like other drivers */ 282a1a113b0a1ea437daf099b44f8a39e93a02a3f47Dan Williams if (dev->dev_type == SAS_END_DEV) { 2836f231dda68080759f1aed3769896e94c73099f0fDan Williams isci_tmf->proto = SAS_PROTOCOL_SSP; 28489a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams status = sci_task_request_construct_ssp(ireq); 2856f231dda68080759f1aed3769896e94c73099f0fDan Williams if (status != SCI_SUCCESS) 286db0562509800a2d4cb5cb14a66413c30484f165cDan Williams return NULL; 2876f231dda68080759f1aed3769896e94c73099f0fDan Williams } 2886f231dda68080759f1aed3769896e94c73099f0fDan Williams 2890d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams return ireq; 2906f231dda68080759f1aed3769896e94c73099f0fDan Williams} 2916f231dda68080759f1aed3769896e94c73099f0fDan Williams 292b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin/** 293b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin* isci_request_mark_zombie() - This function must be called with scic_lock held. 294b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin*/ 295b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvinstatic void isci_request_mark_zombie(struct isci_host *ihost, struct isci_request *ireq) 296b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin{ 297b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin struct completion *tmf_completion = NULL; 298b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin struct completion *req_completion; 299b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 300b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin /* Set the request state to "dead". */ 301b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin ireq->status = dead; 302b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 303b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin req_completion = ireq->io_request_completion; 304b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin ireq->io_request_completion = NULL; 305b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 3063b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin if (test_bit(IREQ_TMF, &ireq->flags)) { 307b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin /* Break links with the TMF request. */ 308b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin struct isci_tmf *tmf = isci_request_access_tmf(ireq); 309b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 310b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin /* In the case where a task request is dying, 311b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin * the thread waiting on the complete will sit and 312b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin * timeout unless we wake it now. Since the TMF 313b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin * has a default error status, complete it here 314b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin * to wake the waiting thread. 315b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin */ 316b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin if (tmf) { 317b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin tmf_completion = tmf->complete; 318b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin tmf->complete = NULL; 319b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin } 320b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin ireq->ttype_ptr.tmf_task_ptr = NULL; 321b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin dev_dbg(&ihost->pdev->dev, "%s: tmf_code %d, managed tag %#x\n", 322b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin __func__, tmf->tmf_code, tmf->io_tag); 3233b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin } else { 3243b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin /* Break links with the sas_task - the callback is done 3253b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin * elsewhere. 3263b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin */ 3273b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin struct sas_task *task = isci_request_access_task(ireq); 3283b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin 3293b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin if (task) 3303b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin task->lldd_task = NULL; 3313b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin 3323b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin ireq->ttype_ptr.io_task_ptr = NULL; 333b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin } 334b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 335b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin dev_warn(&ihost->pdev->dev, "task context unrecoverable (tag: %#x)\n", 336b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin ireq->io_tag); 337b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 338b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin /* Don't force waiting threads to timeout. */ 339b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin if (req_completion) 340b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin complete(req_completion); 341b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 342b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin if (tmf_completion != NULL) 343b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin complete(tmf_completion); 344b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin} 345b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 34616ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williamsstatic int isci_task_execute_tmf(struct isci_host *ihost, 34716ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams struct isci_remote_device *idev, 34816ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams struct isci_tmf *tmf, unsigned long timeout_ms) 3496f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 3506f231dda68080759f1aed3769896e94c73099f0fDan Williams DECLARE_COMPLETION_ONSTACK(completion); 351467e855a0331f619f41fbf7391bc29ec0ca923a0Bartosz Barcinski enum sci_task_status status = SCI_TASK_FAILURE; 3520d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams struct isci_request *ireq; 3536f231dda68080759f1aed3769896e94c73099f0fDan Williams int ret = TMF_RESP_FUNC_FAILED; 3546f231dda68080759f1aed3769896e94c73099f0fDan Williams unsigned long flags; 355fd18388bc5820b3e7807302ac18e8e7de83c9f4cEdmund Nadolski unsigned long timeleft; 356312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams u16 tag; 357312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams 358312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 359312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams tag = isci_alloc_tag(ihost); 360312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 361312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams 362312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams if (tag == SCI_CONTROLLER_INVALID_IO_TAG) 363312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams return ret; 3646f231dda68080759f1aed3769896e94c73099f0fDan Williams 3656f231dda68080759f1aed3769896e94c73099f0fDan Williams /* sanity check, return TMF_RESP_FUNC_FAILED 3666f231dda68080759f1aed3769896e94c73099f0fDan Williams * if the device is not there and ready. 3676f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 36878a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams if (!idev || 36978a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams (!test_bit(IDEV_IO_READY, &idev->flags) && 37078a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams !test_bit(IDEV_IO_NCQERROR, &idev->flags))) { 3710d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams dev_dbg(&ihost->pdev->dev, 37278a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams "%s: idev = %p not ready (%#lx)\n", 3736f231dda68080759f1aed3769896e94c73099f0fDan Williams __func__, 37478a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams idev, idev ? idev->flags : 0); 375312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams goto err_tci; 3766f231dda68080759f1aed3769896e94c73099f0fDan Williams } else 3770d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams dev_dbg(&ihost->pdev->dev, 37878a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams "%s: idev = %p\n", 37978a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams __func__, idev); 3806f231dda68080759f1aed3769896e94c73099f0fDan Williams 3816f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Assign the pointer to the TMF's completion kernel wait structure. */ 3826f231dda68080759f1aed3769896e94c73099f0fDan Williams tmf->complete = &completion; 383b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin tmf->status = SCI_FAILURE_TIMEOUT; 3846f231dda68080759f1aed3769896e94c73099f0fDan Williams 38578a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams ireq = isci_task_request_build(ihost, idev, tag, tmf); 386312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams if (!ireq) 387312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams goto err_tci; 3886f231dda68080759f1aed3769896e94c73099f0fDan Williams 3890d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 3906f231dda68080759f1aed3769896e94c73099f0fDan Williams 3916f231dda68080759f1aed3769896e94c73099f0fDan Williams /* start the TMF io. */ 39289a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams status = sci_controller_start_task(ihost, idev, ireq); 3936f231dda68080759f1aed3769896e94c73099f0fDan Williams 394467e855a0331f619f41fbf7391bc29ec0ca923a0Bartosz Barcinski if (status != SCI_TASK_SUCCESS) { 395a8a0a133b03c6863d0f77229d19befca4de905faDan Williams dev_dbg(&ihost->pdev->dev, 3966f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: start_io failed - status = 0x%x, request = %p\n", 3976f231dda68080759f1aed3769896e94c73099f0fDan Williams __func__, 3986f231dda68080759f1aed3769896e94c73099f0fDan Williams status, 3990d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams ireq); 4000d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 401db0562509800a2d4cb5cb14a66413c30484f165cDan Williams goto err_tci; 4026f231dda68080759f1aed3769896e94c73099f0fDan Williams } 4036f231dda68080759f1aed3769896e94c73099f0fDan Williams 4046f231dda68080759f1aed3769896e94c73099f0fDan Williams if (tmf->cb_state_func != NULL) 4056f231dda68080759f1aed3769896e94c73099f0fDan Williams tmf->cb_state_func(isci_tmf_started, tmf, tmf->cb_data); 4066f231dda68080759f1aed3769896e94c73099f0fDan Williams 4070d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams isci_request_change_state(ireq, started); 4086f231dda68080759f1aed3769896e94c73099f0fDan Williams 4096f231dda68080759f1aed3769896e94c73099f0fDan Williams /* add the request to the remote device request list. */ 41078a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams list_add(&ireq->dev_node, &idev->reqs_in_process); 4116f231dda68080759f1aed3769896e94c73099f0fDan Williams 4120d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 4136f231dda68080759f1aed3769896e94c73099f0fDan Williams 4146f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Wait for the TMF to complete, or a timeout. */ 415fd18388bc5820b3e7807302ac18e8e7de83c9f4cEdmund Nadolski timeleft = wait_for_completion_timeout(&completion, 416086a0dabc5bf154e13604a6d71e2d051207f9718Dan Williams msecs_to_jiffies(timeout_ms)); 417fd18388bc5820b3e7807302ac18e8e7de83c9f4cEdmund Nadolski 418fd18388bc5820b3e7807302ac18e8e7de83c9f4cEdmund Nadolski if (timeleft == 0) { 419b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin /* The TMF did not complete - this could be because 420b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin * of an unplug. Terminate the TMF request now. 421b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin */ 4220d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 423fd18388bc5820b3e7807302ac18e8e7de83c9f4cEdmund Nadolski 424fd18388bc5820b3e7807302ac18e8e7de83c9f4cEdmund Nadolski if (tmf->cb_state_func != NULL) 425b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin tmf->cb_state_func(isci_tmf_timed_out, tmf, 426b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin tmf->cb_data); 427fd18388bc5820b3e7807302ac18e8e7de83c9f4cEdmund Nadolski 428b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin sci_controller_terminate_request(ihost, idev, ireq); 429fd18388bc5820b3e7807302ac18e8e7de83c9f4cEdmund Nadolski 4300d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 431086a0dabc5bf154e13604a6d71e2d051207f9718Dan Williams 432b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin timeleft = wait_for_completion_timeout( 433b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin &completion, 434b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin msecs_to_jiffies(ISCI_TERMINATION_TIMEOUT_MSEC)); 435b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 436b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin if (!timeleft) { 437b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin /* Strange condition - the termination of the TMF 438b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin * request timed-out. 439b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin */ 440b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin spin_lock_irqsave(&ihost->scic_lock, flags); 441b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 442b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin /* If the TMF status has not changed, kill it. */ 443b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin if (tmf->status == SCI_FAILURE_TIMEOUT) 444b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin isci_request_mark_zombie(ihost, ireq); 445b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 446b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin spin_unlock_irqrestore(&ihost->scic_lock, flags); 447b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin } 448fd18388bc5820b3e7807302ac18e8e7de83c9f4cEdmund Nadolski } 4496f231dda68080759f1aed3769896e94c73099f0fDan Williams 45027234ab44f97d85bab062a9d18aaff99addd267dMaciej Trela isci_print_tmf(ihost, tmf); 4516f231dda68080759f1aed3769896e94c73099f0fDan Williams 4526f231dda68080759f1aed3769896e94c73099f0fDan Williams if (tmf->status == SCI_SUCCESS) 4536f231dda68080759f1aed3769896e94c73099f0fDan Williams ret = TMF_RESP_FUNC_COMPLETE; 4546f231dda68080759f1aed3769896e94c73099f0fDan Williams else if (tmf->status == SCI_FAILURE_IO_RESPONSE_VALID) { 4550d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams dev_dbg(&ihost->pdev->dev, 4566f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: tmf.status == " 4576f231dda68080759f1aed3769896e94c73099f0fDan Williams "SCI_FAILURE_IO_RESPONSE_VALID\n", 4586f231dda68080759f1aed3769896e94c73099f0fDan Williams __func__); 4596f231dda68080759f1aed3769896e94c73099f0fDan Williams ret = TMF_RESP_FUNC_COMPLETE; 4606f231dda68080759f1aed3769896e94c73099f0fDan Williams } 4616f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Else - leave the default "failed" status alone. */ 4626f231dda68080759f1aed3769896e94c73099f0fDan Williams 4630d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams dev_dbg(&ihost->pdev->dev, 4646f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: completed request = %p\n", 4656f231dda68080759f1aed3769896e94c73099f0fDan Williams __func__, 4660d0cf14c9bd2943ed5afd15df459f564d85eacdeDan Williams ireq); 4676f231dda68080759f1aed3769896e94c73099f0fDan Williams 4686f231dda68080759f1aed3769896e94c73099f0fDan Williams return ret; 469312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams 470312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams err_tci: 471312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 472312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams isci_tci_free(ihost, ISCI_TAG_TCI(tag)); 473312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 474312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams 475312e0c2455c18716cf640d4336dcb1e9e5053818Dan Williams return ret; 4766f231dda68080759f1aed3769896e94c73099f0fDan Williams} 4776f231dda68080759f1aed3769896e94c73099f0fDan Williams 47816ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williamsstatic void isci_task_build_tmf(struct isci_tmf *tmf, 47916ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams enum isci_tmf_function_codes code, 48016ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams void (*tmf_sent_cb)(enum isci_tmf_cb_state, 48116ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams struct isci_tmf *, 48216ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams void *), 48316ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams void *cb_data) 4846f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 4856f231dda68080759f1aed3769896e94c73099f0fDan Williams memset(tmf, 0, sizeof(*tmf)); 4866f231dda68080759f1aed3769896e94c73099f0fDan Williams 4876f231dda68080759f1aed3769896e94c73099f0fDan Williams tmf->tmf_code = code; 4886f231dda68080759f1aed3769896e94c73099f0fDan Williams tmf->cb_state_func = tmf_sent_cb; 489c3f42feb0c3d20dc7007336e7de949408b93afefJeff Skirvin tmf->cb_data = cb_data; 490c3f42feb0c3d20dc7007336e7de949408b93afefJeff Skirvin} 4911fad9e934a43407c1ba397b1b6b8882aa8a2cafdJeff Skirvin 49216ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williamsstatic void isci_task_build_abort_task_tmf(struct isci_tmf *tmf, 49316ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams enum isci_tmf_function_codes code, 49416ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams void (*tmf_sent_cb)(enum isci_tmf_cb_state, 49516ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams struct isci_tmf *, 49616ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams void *), 49716ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams struct isci_request *old_request) 498c3f42feb0c3d20dc7007336e7de949408b93afefJeff Skirvin{ 49916ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams isci_task_build_tmf(tmf, code, tmf_sent_cb, old_request); 500c3f42feb0c3d20dc7007336e7de949408b93afefJeff Skirvin tmf->io_tag = old_request->io_tag; 5016f231dda68080759f1aed3769896e94c73099f0fDan Williams} 5026f231dda68080759f1aed3769896e94c73099f0fDan Williams 5036f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 5046f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_task_validate_request_to_abort() - This function checks the given I/O 5056f231dda68080759f1aed3769896e94c73099f0fDan Williams * against the "started" state. If the request is still "started", it's 5066f231dda68080759f1aed3769896e94c73099f0fDan Williams * state is changed to aborted. NOTE: isci_host->scic_lock MUST BE HELD 5076f231dda68080759f1aed3769896e94c73099f0fDan Williams * BEFORE CALLING THIS FUNCTION. 5086f231dda68080759f1aed3769896e94c73099f0fDan Williams * @isci_request: This parameter specifies the request object to control. 5096f231dda68080759f1aed3769896e94c73099f0fDan Williams * @isci_host: This parameter specifies the ISCI host object 5106f231dda68080759f1aed3769896e94c73099f0fDan Williams * @isci_device: This is the device to which the request is pending. 5116f231dda68080759f1aed3769896e94c73099f0fDan Williams * @aborted_io_completion: This is a completion structure that will be added to 5126f231dda68080759f1aed3769896e94c73099f0fDan Williams * the request in case it is changed to aborting; this completion is 5136f231dda68080759f1aed3769896e94c73099f0fDan Williams * triggered when the request is fully completed. 5146f231dda68080759f1aed3769896e94c73099f0fDan Williams * 5156f231dda68080759f1aed3769896e94c73099f0fDan Williams * Either "started" on successful change of the task status to "aborted", or 5166f231dda68080759f1aed3769896e94c73099f0fDan Williams * "unallocated" if the task cannot be controlled. 5176f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 5186f231dda68080759f1aed3769896e94c73099f0fDan Williamsstatic enum isci_request_status isci_task_validate_request_to_abort( 5196f231dda68080759f1aed3769896e94c73099f0fDan Williams struct isci_request *isci_request, 5206f231dda68080759f1aed3769896e94c73099f0fDan Williams struct isci_host *isci_host, 5216f231dda68080759f1aed3769896e94c73099f0fDan Williams struct isci_remote_device *isci_device, 5226f231dda68080759f1aed3769896e94c73099f0fDan Williams struct completion *aborted_io_completion) 5236f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 5246f231dda68080759f1aed3769896e94c73099f0fDan Williams enum isci_request_status old_state = unallocated; 5256f231dda68080759f1aed3769896e94c73099f0fDan Williams 5266f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Only abort the task if it's in the 5276f231dda68080759f1aed3769896e94c73099f0fDan Williams * device's request_in_process list 5286f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 5296f231dda68080759f1aed3769896e94c73099f0fDan Williams if (isci_request && !list_empty(&isci_request->dev_node)) { 5306f231dda68080759f1aed3769896e94c73099f0fDan Williams old_state = isci_request_change_started_to_aborted( 5316f231dda68080759f1aed3769896e94c73099f0fDan Williams isci_request, aborted_io_completion); 5326f231dda68080759f1aed3769896e94c73099f0fDan Williams 5336f231dda68080759f1aed3769896e94c73099f0fDan Williams } 5346f231dda68080759f1aed3769896e94c73099f0fDan Williams 5356f231dda68080759f1aed3769896e94c73099f0fDan Williams return old_state; 5366f231dda68080759f1aed3769896e94c73099f0fDan Williams} 5376f231dda68080759f1aed3769896e94c73099f0fDan Williams 538d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvinstatic int isci_request_is_dealloc_managed(enum isci_request_status stat) 539d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin{ 540d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin switch (stat) { 541d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin case aborted: 542d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin case aborting: 543d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin case terminating: 544d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin case completed: 545d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin case dead: 546d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin return true; 547d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin default: 548d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin return false; 549d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin } 550d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin} 551d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin 5526f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 5536f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_terminate_request_core() - This function will terminate the given 5546f231dda68080759f1aed3769896e94c73099f0fDan Williams * request, and wait for it to complete. This function must only be called 5556f231dda68080759f1aed3769896e94c73099f0fDan Williams * from a thread that can wait. Note that the request is terminated and 5566f231dda68080759f1aed3769896e94c73099f0fDan Williams * completed (back to the host, if started there). 557d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams * @ihost: This SCU. 55878a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams * @idev: The target. 5596f231dda68080759f1aed3769896e94c73099f0fDan Williams * @isci_request: The I/O request to be terminated. 5606f231dda68080759f1aed3769896e94c73099f0fDan Williams * 5616f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 562d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williamsstatic void isci_terminate_request_core(struct isci_host *ihost, 563d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams struct isci_remote_device *idev, 564d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams struct isci_request *isci_request) 5656f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 566cbb65c665b341e560b7a3b37cc616376031b3ee5Jeff Skirvin enum sci_status status = SCI_SUCCESS; 5676f231dda68080759f1aed3769896e94c73099f0fDan Williams bool was_terminated = false; 5686f231dda68080759f1aed3769896e94c73099f0fDan Williams bool needs_cleanup_handling = false; 56977c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin unsigned long flags; 57077c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin unsigned long termination_completed = 1; 57177c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin struct completion *io_request_completion; 5726f231dda68080759f1aed3769896e94c73099f0fDan Williams 573d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams dev_dbg(&ihost->pdev->dev, 5746f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: device = %p; request = %p\n", 57578a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams __func__, idev, isci_request); 5766f231dda68080759f1aed3769896e94c73099f0fDan Williams 577d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 5784dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin 57977c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin io_request_completion = isci_request->io_request_completion; 58077c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin 5814dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin /* Note that we are not going to control 58238d8879baeb61b6946052739e7c03fa79b3a57f0Dan Williams * the target to abort the request. 58338d8879baeb61b6946052739e7c03fa79b3a57f0Dan Williams */ 58438d8879baeb61b6946052739e7c03fa79b3a57f0Dan Williams set_bit(IREQ_COMPLETE_IN_TARGET, &isci_request->flags); 5854dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin 5866f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Make sure the request wasn't just sitting around signalling 5876f231dda68080759f1aed3769896e94c73099f0fDan Williams * device condition (if the request handle is NULL, then the 5886f231dda68080759f1aed3769896e94c73099f0fDan Williams * request completed but needed additional handling here). 5896f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 59038d8879baeb61b6946052739e7c03fa79b3a57f0Dan Williams if (!test_bit(IREQ_TERMINATED, &isci_request->flags)) { 5916f231dda68080759f1aed3769896e94c73099f0fDan Williams was_terminated = true; 592cbb65c665b341e560b7a3b37cc616376031b3ee5Jeff Skirvin needs_cleanup_handling = true; 59389a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams status = sci_controller_terminate_request(ihost, 594d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams idev, 595d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams isci_request); 5966f231dda68080759f1aed3769896e94c73099f0fDan Williams } 597d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 5986f231dda68080759f1aed3769896e94c73099f0fDan Williams 5996f231dda68080759f1aed3769896e94c73099f0fDan Williams /* 6006f231dda68080759f1aed3769896e94c73099f0fDan Williams * The only time the request to terminate will 6016f231dda68080759f1aed3769896e94c73099f0fDan Williams * fail is when the io request is completed and 6026f231dda68080759f1aed3769896e94c73099f0fDan Williams * being aborted. 6036f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 6044dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin if (status != SCI_SUCCESS) { 605a8a0a133b03c6863d0f77229d19befca4de905faDan Williams dev_dbg(&ihost->pdev->dev, 60689a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams "%s: sci_controller_terminate_request" 6076f231dda68080759f1aed3769896e94c73099f0fDan Williams " returned = 0x%x\n", 60877c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin __func__, status); 60977c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin 6104dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin isci_request->io_request_completion = NULL; 6114dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin 6124dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin } else { 6136f231dda68080759f1aed3769896e94c73099f0fDan Williams if (was_terminated) { 614d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams dev_dbg(&ihost->pdev->dev, 61577c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin "%s: before completion wait (%p/%p)\n", 61677c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin __func__, isci_request, io_request_completion); 6176f231dda68080759f1aed3769896e94c73099f0fDan Williams 6186f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Wait here for the request to complete. */ 61977c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin termination_completed 6204dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin = wait_for_completion_timeout( 62177c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin io_request_completion, 622b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin msecs_to_jiffies(ISCI_TERMINATION_TIMEOUT_MSEC)); 6234dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin 62477c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin if (!termination_completed) { 62577c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin 62677c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin /* The request to terminate has timed out. */ 627b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin spin_lock_irqsave(&ihost->scic_lock, flags); 62877c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin 62977c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin /* Check for state changes. */ 630b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin if (!test_bit(IREQ_TERMINATED, 631b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin &isci_request->flags)) { 63277c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin 63377c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin /* The best we can do is to have the 63477c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin * request die a silent death if it 63577c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin * ever really completes. 63677c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin */ 637b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin isci_request_mark_zombie(ihost, 638b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin isci_request); 639b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin needs_cleanup_handling = true; 64077c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin } else 64177c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin termination_completed = 1; 64277c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin 643d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, 64477c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin flags); 6454dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin 64677c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin if (!termination_completed) { 6474dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin 648a8a0a133b03c6863d0f77229d19befca4de905faDan Williams dev_dbg(&ihost->pdev->dev, 64977c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin "%s: *** Timeout waiting for " 65077c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin "termination(%p/%p)\n", 65177c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin __func__, io_request_completion, 65277c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin isci_request); 6534dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin 65477c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin /* The request can no longer be referenced 65577c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin * safely since it may go away if the 65677c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin * termination every really does complete. 65777c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin */ 65877c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin isci_request = NULL; 65977c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin } 66077c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin } 66177c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin if (termination_completed) 662d9dcb4ba791de2a06b19ac47cd61601cf3d4e208Dan Williams dev_dbg(&ihost->pdev->dev, 66377c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin "%s: after completion wait (%p/%p)\n", 66477c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin __func__, isci_request, io_request_completion); 6654dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin } 6664dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin 66777c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin if (termination_completed) { 668cbb65c665b341e560b7a3b37cc616376031b3ee5Jeff Skirvin 66977c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin isci_request->io_request_completion = NULL; 6706f231dda68080759f1aed3769896e94c73099f0fDan Williams 67177c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin /* Peek at the status of the request. This will tell 67277c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin * us if there was special handling on the request such that it 67377c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin * needs to be detached and freed here. 67477c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin */ 67577c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin spin_lock_irqsave(&isci_request->state_lock, flags); 676d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin 677d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin needs_cleanup_handling 678d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin = isci_request_is_dealloc_managed( 679d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin isci_request->status); 680d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin 68177c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin spin_unlock_irqrestore(&isci_request->state_lock, flags); 6826f231dda68080759f1aed3769896e94c73099f0fDan Williams 68377c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin } 684db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin if (needs_cleanup_handling) { 685db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin 686db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin dev_dbg(&ihost->pdev->dev, 687db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin "%s: cleanup isci_device=%p, request=%p\n", 688db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin __func__, idev, isci_request); 689db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin 690db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin if (isci_request != NULL) { 691db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin spin_lock_irqsave(&ihost->scic_lock, flags); 692db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin isci_free_tag(ihost, isci_request->io_tag); 693db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin isci_request_change_state(isci_request, unallocated); 694db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin list_del_init(&isci_request->dev_node); 695db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin spin_unlock_irqrestore(&ihost->scic_lock, flags); 696db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin } 697db49c2d037d50dfc67b29a4e013d6250ca97c3aaJeff Skirvin } 698a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin } 6996f231dda68080759f1aed3769896e94c73099f0fDan Williams} 7006f231dda68080759f1aed3769896e94c73099f0fDan Williams 7016f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 7026f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_terminate_pending_requests() - This function will change the all of the 7036f231dda68080759f1aed3769896e94c73099f0fDan Williams * requests on the given device's state to "aborting", will terminate the 7046f231dda68080759f1aed3769896e94c73099f0fDan Williams * requests, and wait for them to complete. This function must only be 7056f231dda68080759f1aed3769896e94c73099f0fDan Williams * called from a thread that can wait. Note that the requests are all 7066f231dda68080759f1aed3769896e94c73099f0fDan Williams * terminated and completed (back to the host, if started there). 7076f231dda68080759f1aed3769896e94c73099f0fDan Williams * @isci_host: This parameter specifies SCU. 70878a6f06e0e82125787d7aa308fe28c2c8381540cDan Williams * @idev: This parameter specifies the target. 7096f231dda68080759f1aed3769896e94c73099f0fDan Williams * 7106f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 711980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williamsvoid isci_terminate_pending_requests(struct isci_host *ihost, 712980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams struct isci_remote_device *idev) 7136f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 714980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams struct completion request_completion; 71577c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin enum isci_request_status old_state; 716980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams unsigned long flags; 717980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams LIST_HEAD(list); 7186f231dda68080759f1aed3769896e94c73099f0fDan Williams 719980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 720980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams list_splice_init(&idev->reqs_in_process, &list); 7216f231dda68080759f1aed3769896e94c73099f0fDan Williams 722980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams /* assumes that isci_terminate_request_core deletes from the list */ 723980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams while (!list_empty(&list)) { 724980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams struct isci_request *ireq = list_entry(list.next, typeof(*ireq), dev_node); 7256f231dda68080759f1aed3769896e94c73099f0fDan Williams 726980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams /* Change state to "terminating" if it is currently 727980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * "started". 728980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams */ 729980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams old_state = isci_request_change_started_to_newstate(ireq, 730980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams &request_completion, 731980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams terminating); 732980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams switch (old_state) { 733980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams case started: 734980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams case completed: 735980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams case aborting: 736980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams break; 737980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams default: 738980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams /* termination in progress, or otherwise dispositioned. 739980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * We know the request was on 'list' so should be safe 740980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * to move it back to reqs_in_process 741980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams */ 742980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams list_move(&ireq->dev_node, &idev->reqs_in_process); 743980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams ireq = NULL; 744980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams break; 745980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams } 7464dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin 747980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams if (!ireq) 748980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams continue; 749980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 75077c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin 751980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams init_completion(&request_completion); 75277c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin 753980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams dev_dbg(&ihost->pdev->dev, 754980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams "%s: idev=%p request=%p; task=%p old_state=%d\n", 755980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams __func__, idev, ireq, 7563b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin (!test_bit(IREQ_TMF, &ireq->flags) 7573b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin ? isci_request_access_task(ireq) 7583b34c169f8197e02529fa3ec703703c2ce418c57Jeff Skirvin : NULL), 759980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams old_state); 760980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams 761980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams /* If the old_state is started: 762980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * This request was not already being aborted. If it had been, 763980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * then the aborting I/O (ie. the TMF request) would not be in 764980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * the aborting state, and thus would be terminated here. Note 765980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * that since the TMF completion's call to the kernel function 766980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * "complete()" does not happen until the pending I/O request 767980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * terminate fully completes, we do not have to implement a 768980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * special wait here for already aborting requests - the 769980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * termination of the TMF request will force the request 770980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * to finish it's already started terminate. 771980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * 772980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * If old_state == completed: 773980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * This request completed from the SCU hardware perspective 774980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * and now just needs cleaning up in terms of freeing the 775980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * request and potentially calling up to libsas. 776980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * 777980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * If old_state == aborting: 778980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * This request has already gone through a TMF timeout, but may 779980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams * not have been terminated; needs cleaning up at least. 780980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams */ 781980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams isci_terminate_request_core(ihost, idev, ireq); 782980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 7834dc043c41037fc6e369270daaa626465a8766565Jeff Skirvin } 784980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 7856f231dda68080759f1aed3769896e94c73099f0fDan Williams} 7866f231dda68080759f1aed3769896e94c73099f0fDan Williams 7876f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 7886f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_task_send_lu_reset_sas() - This function is called by of the SAS Domain 7896f231dda68080759f1aed3769896e94c73099f0fDan Williams * Template functions. 7906f231dda68080759f1aed3769896e94c73099f0fDan Williams * @lun: This parameter specifies the lun to be reset. 7916f231dda68080759f1aed3769896e94c73099f0fDan Williams * 7926f231dda68080759f1aed3769896e94c73099f0fDan Williams * status, zero indicates success. 7936f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 7946f231dda68080759f1aed3769896e94c73099f0fDan Williamsstatic int isci_task_send_lu_reset_sas( 7956f231dda68080759f1aed3769896e94c73099f0fDan Williams struct isci_host *isci_host, 7966f231dda68080759f1aed3769896e94c73099f0fDan Williams struct isci_remote_device *isci_device, 7976f231dda68080759f1aed3769896e94c73099f0fDan Williams u8 *lun) 7986f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 7996f231dda68080759f1aed3769896e94c73099f0fDan Williams struct isci_tmf tmf; 8006f231dda68080759f1aed3769896e94c73099f0fDan Williams int ret = TMF_RESP_FUNC_FAILED; 8016f231dda68080759f1aed3769896e94c73099f0fDan Williams 8026f231dda68080759f1aed3769896e94c73099f0fDan Williams dev_dbg(&isci_host->pdev->dev, 8036f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: isci_host = %p, isci_device = %p\n", 8046f231dda68080759f1aed3769896e94c73099f0fDan Williams __func__, isci_host, isci_device); 8056f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Send the LUN reset to the target. By the time the call returns, 8066f231dda68080759f1aed3769896e94c73099f0fDan Williams * the TMF has fully exected in the target (in which case the return 8076f231dda68080759f1aed3769896e94c73099f0fDan Williams * value is "TMF_RESP_FUNC_COMPLETE", or the request timed-out (or 8086f231dda68080759f1aed3769896e94c73099f0fDan Williams * was otherwise unable to be executed ("TMF_RESP_FUNC_FAILED"). 8096f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 810209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams isci_task_build_tmf(&tmf, isci_tmf_ssp_lun_reset, NULL, NULL); 8116f231dda68080759f1aed3769896e94c73099f0fDan Williams 8126f231dda68080759f1aed3769896e94c73099f0fDan Williams #define ISCI_LU_RESET_TIMEOUT_MS 2000 /* 2 second timeout. */ 813209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams ret = isci_task_execute_tmf(isci_host, isci_device, &tmf, ISCI_LU_RESET_TIMEOUT_MS); 8146f231dda68080759f1aed3769896e94c73099f0fDan Williams 8156f231dda68080759f1aed3769896e94c73099f0fDan Williams if (ret == TMF_RESP_FUNC_COMPLETE) 8166f231dda68080759f1aed3769896e94c73099f0fDan Williams dev_dbg(&isci_host->pdev->dev, 8176f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: %p: TMF_LU_RESET passed\n", 8186f231dda68080759f1aed3769896e94c73099f0fDan Williams __func__, isci_device); 8196f231dda68080759f1aed3769896e94c73099f0fDan Williams else 8206f231dda68080759f1aed3769896e94c73099f0fDan Williams dev_dbg(&isci_host->pdev->dev, 8216f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: %p: TMF_LU_RESET failed (%x)\n", 8226f231dda68080759f1aed3769896e94c73099f0fDan Williams __func__, isci_device, ret); 8236f231dda68080759f1aed3769896e94c73099f0fDan Williams 8246f231dda68080759f1aed3769896e94c73099f0fDan Williams return ret; 8256f231dda68080759f1aed3769896e94c73099f0fDan Williams} 8266f231dda68080759f1aed3769896e94c73099f0fDan Williams 82743a5ab151f0268459c4368292c2ddb2266b8f243Dan Williamsint isci_task_lu_reset(struct domain_device *dev, u8 *lun) 82816ba77091b44af28b3ff3318b4a2aa4fbf7d4c24Dan Williams{ 82943a5ab151f0268459c4368292c2ddb2266b8f243Dan Williams struct isci_host *isci_host = dev_to_ihost(dev); 830209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams struct isci_remote_device *isci_device; 831209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams unsigned long flags; 8326f231dda68080759f1aed3769896e94c73099f0fDan Williams int ret; 8336f231dda68080759f1aed3769896e94c73099f0fDan Williams 834209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams spin_lock_irqsave(&isci_host->scic_lock, flags); 83543a5ab151f0268459c4368292c2ddb2266b8f243Dan Williams isci_device = isci_lookup_device(dev); 836209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams spin_unlock_irqrestore(&isci_host->scic_lock, flags); 8376f231dda68080759f1aed3769896e94c73099f0fDan Williams 8384393aa4e6b9517a666f0ef6b774fd421a9dc4c68Dan Williams dev_dbg(&isci_host->pdev->dev, 8394393aa4e6b9517a666f0ef6b774fd421a9dc4c68Dan Williams "%s: domain_device=%p, isci_host=%p; isci_device=%p\n", 84043a5ab151f0268459c4368292c2ddb2266b8f243Dan Williams __func__, dev, isci_host, isci_device); 8416f231dda68080759f1aed3769896e94c73099f0fDan Williams 84298145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin if (!isci_device) { 84398145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin /* If the device is gone, stop the escalations. */ 84498145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin dev_dbg(&isci_host->pdev->dev, "%s: No dev\n", __func__); 8456f231dda68080759f1aed3769896e94c73099f0fDan Williams 84698145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin ret = TMF_RESP_FUNC_COMPLETE; 847209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams goto out; 8486f231dda68080759f1aed3769896e94c73099f0fDan Williams } 8496f231dda68080759f1aed3769896e94c73099f0fDan Williams 8506f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Send the task management part of the reset. */ 85143a5ab151f0268459c4368292c2ddb2266b8f243Dan Williams if (dev_is_sata(dev)) { 85243a5ab151f0268459c4368292c2ddb2266b8f243Dan Williams sas_ata_schedule_reset(dev); 85343a5ab151f0268459c4368292c2ddb2266b8f243Dan Williams ret = TMF_RESP_FUNC_COMPLETE; 8546f231dda68080759f1aed3769896e94c73099f0fDan Williams } else 8556f231dda68080759f1aed3769896e94c73099f0fDan Williams ret = isci_task_send_lu_reset_sas(isci_host, isci_device, lun); 8566f231dda68080759f1aed3769896e94c73099f0fDan Williams 8576f231dda68080759f1aed3769896e94c73099f0fDan Williams /* If the LUN reset worked, all the I/O can now be terminated. */ 8586f231dda68080759f1aed3769896e94c73099f0fDan Williams if (ret == TMF_RESP_FUNC_COMPLETE) 8596f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Terminate all I/O now. */ 8606f231dda68080759f1aed3769896e94c73099f0fDan Williams isci_terminate_pending_requests(isci_host, 861980d3aeb3828b0fdf2a0b2e893d238130b014575Dan Williams isci_device); 8626f231dda68080759f1aed3769896e94c73099f0fDan Williams 863209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams out: 864209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams isci_put_device(isci_device); 8656f231dda68080759f1aed3769896e94c73099f0fDan Williams return ret; 8666f231dda68080759f1aed3769896e94c73099f0fDan Williams} 8676f231dda68080759f1aed3769896e94c73099f0fDan Williams 8686f231dda68080759f1aed3769896e94c73099f0fDan Williams 8696f231dda68080759f1aed3769896e94c73099f0fDan Williams/* int (*lldd_clear_nexus_port)(struct asd_sas_port *); */ 8706f231dda68080759f1aed3769896e94c73099f0fDan Williamsint isci_task_clear_nexus_port(struct asd_sas_port *port) 8716f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 8726f231dda68080759f1aed3769896e94c73099f0fDan Williams return TMF_RESP_FUNC_FAILED; 8736f231dda68080759f1aed3769896e94c73099f0fDan Williams} 8746f231dda68080759f1aed3769896e94c73099f0fDan Williams 8756f231dda68080759f1aed3769896e94c73099f0fDan Williams 8766f231dda68080759f1aed3769896e94c73099f0fDan Williams 8776f231dda68080759f1aed3769896e94c73099f0fDan Williamsint isci_task_clear_nexus_ha(struct sas_ha_struct *ha) 8786f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 8796f231dda68080759f1aed3769896e94c73099f0fDan Williams return TMF_RESP_FUNC_FAILED; 8806f231dda68080759f1aed3769896e94c73099f0fDan Williams} 8816f231dda68080759f1aed3769896e94c73099f0fDan Williams 8826f231dda68080759f1aed3769896e94c73099f0fDan Williams/* Task Management Functions. Must be called from process context. */ 8836f231dda68080759f1aed3769896e94c73099f0fDan Williams 8846f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 8856f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_abort_task_process_cb() - This is a helper function for the abort task 8866f231dda68080759f1aed3769896e94c73099f0fDan Williams * TMF command. It manages the request state with respect to the successful 8876f231dda68080759f1aed3769896e94c73099f0fDan Williams * transmission / completion of the abort task request. 8886f231dda68080759f1aed3769896e94c73099f0fDan Williams * @cb_state: This parameter specifies when this function was called - after 8896f231dda68080759f1aed3769896e94c73099f0fDan Williams * the TMF request has been started and after it has timed-out. 8906f231dda68080759f1aed3769896e94c73099f0fDan Williams * @tmf: This parameter specifies the TMF in progress. 8916f231dda68080759f1aed3769896e94c73099f0fDan Williams * 8926f231dda68080759f1aed3769896e94c73099f0fDan Williams * 8936f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 8946f231dda68080759f1aed3769896e94c73099f0fDan Williamsstatic void isci_abort_task_process_cb( 8956f231dda68080759f1aed3769896e94c73099f0fDan Williams enum isci_tmf_cb_state cb_state, 8966f231dda68080759f1aed3769896e94c73099f0fDan Williams struct isci_tmf *tmf, 8976f231dda68080759f1aed3769896e94c73099f0fDan Williams void *cb_data) 8986f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 8996f231dda68080759f1aed3769896e94c73099f0fDan Williams struct isci_request *old_request; 9006f231dda68080759f1aed3769896e94c73099f0fDan Williams 9016f231dda68080759f1aed3769896e94c73099f0fDan Williams old_request = (struct isci_request *)cb_data; 9026f231dda68080759f1aed3769896e94c73099f0fDan Williams 9036f231dda68080759f1aed3769896e94c73099f0fDan Williams dev_dbg(&old_request->isci_host->pdev->dev, 9046f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: tmf=%p, old_request=%p\n", 9056f231dda68080759f1aed3769896e94c73099f0fDan Williams __func__, tmf, old_request); 9066f231dda68080759f1aed3769896e94c73099f0fDan Williams 9076f231dda68080759f1aed3769896e94c73099f0fDan Williams switch (cb_state) { 9086f231dda68080759f1aed3769896e94c73099f0fDan Williams 9096f231dda68080759f1aed3769896e94c73099f0fDan Williams case isci_tmf_started: 9106f231dda68080759f1aed3769896e94c73099f0fDan Williams /* The TMF has been started. Nothing to do here, since the 9116f231dda68080759f1aed3769896e94c73099f0fDan Williams * request state was already set to "aborted" by the abort 9126f231dda68080759f1aed3769896e94c73099f0fDan Williams * task function. 9136f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 9146cb4d6b382be6345c2d0c4b1b90dfdf9af32da7eBartosz Barcinski if ((old_request->status != aborted) 9156cb4d6b382be6345c2d0c4b1b90dfdf9af32da7eBartosz Barcinski && (old_request->status != completed)) 916a8a0a133b03c6863d0f77229d19befca4de905faDan Williams dev_dbg(&old_request->isci_host->pdev->dev, 9176cb4d6b382be6345c2d0c4b1b90dfdf9af32da7eBartosz Barcinski "%s: Bad request status (%d): tmf=%p, old_request=%p\n", 9186cb4d6b382be6345c2d0c4b1b90dfdf9af32da7eBartosz Barcinski __func__, old_request->status, tmf, old_request); 9196f231dda68080759f1aed3769896e94c73099f0fDan Williams break; 9206f231dda68080759f1aed3769896e94c73099f0fDan Williams 9216f231dda68080759f1aed3769896e94c73099f0fDan Williams case isci_tmf_timed_out: 9226f231dda68080759f1aed3769896e94c73099f0fDan Williams 9236f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Set the task's state to "aborting", since the abort task 9246f231dda68080759f1aed3769896e94c73099f0fDan Williams * function thread set it to "aborted" (above) in anticipation 9256f231dda68080759f1aed3769896e94c73099f0fDan Williams * of the task management request working correctly. Since the 9266f231dda68080759f1aed3769896e94c73099f0fDan Williams * timeout has now fired, the TMF request failed. We set the 9276f231dda68080759f1aed3769896e94c73099f0fDan Williams * state such that the request completion will indicate the 9286f231dda68080759f1aed3769896e94c73099f0fDan Williams * device is no longer present. 9296f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 9306f231dda68080759f1aed3769896e94c73099f0fDan Williams isci_request_change_state(old_request, aborting); 9316f231dda68080759f1aed3769896e94c73099f0fDan Williams break; 9326f231dda68080759f1aed3769896e94c73099f0fDan Williams 9336f231dda68080759f1aed3769896e94c73099f0fDan Williams default: 934a8a0a133b03c6863d0f77229d19befca4de905faDan Williams dev_dbg(&old_request->isci_host->pdev->dev, 9356f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: Bad cb_state (%d): tmf=%p, old_request=%p\n", 9366f231dda68080759f1aed3769896e94c73099f0fDan Williams __func__, cb_state, tmf, old_request); 9376f231dda68080759f1aed3769896e94c73099f0fDan Williams break; 9386f231dda68080759f1aed3769896e94c73099f0fDan Williams } 9396f231dda68080759f1aed3769896e94c73099f0fDan Williams} 9406f231dda68080759f1aed3769896e94c73099f0fDan Williams 9416f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 9426f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_task_abort_task() - This function is one of the SAS Domain Template 9436f231dda68080759f1aed3769896e94c73099f0fDan Williams * functions. This function is called by libsas to abort a specified task. 9446f231dda68080759f1aed3769896e94c73099f0fDan Williams * @task: This parameter specifies the SAS task to abort. 9456f231dda68080759f1aed3769896e94c73099f0fDan Williams * 9466f231dda68080759f1aed3769896e94c73099f0fDan Williams * status, zero indicates success. 9476f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 9486f231dda68080759f1aed3769896e94c73099f0fDan Williamsint isci_task_abort_task(struct sas_task *task) 9496f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 9504393aa4e6b9517a666f0ef6b774fd421a9dc4c68Dan Williams struct isci_host *isci_host = dev_to_ihost(task->dev); 9516f231dda68080759f1aed3769896e94c73099f0fDan Williams DECLARE_COMPLETION_ONSTACK(aborted_io_completion); 952a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin struct isci_request *old_request = NULL; 953a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin enum isci_request_status old_state; 9546f231dda68080759f1aed3769896e94c73099f0fDan Williams struct isci_remote_device *isci_device = NULL; 955a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin struct isci_tmf tmf; 956a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin int ret = TMF_RESP_FUNC_FAILED; 957a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin unsigned long flags; 95898145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin int perform_termination = 0; 9596f231dda68080759f1aed3769896e94c73099f0fDan Williams 9606f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Get the isci_request reference from the task. Note that 9616f231dda68080759f1aed3769896e94c73099f0fDan Williams * this check does not depend on the pending request list 9626f231dda68080759f1aed3769896e94c73099f0fDan Williams * in the device, because tasks driving resets may land here 9636f231dda68080759f1aed3769896e94c73099f0fDan Williams * after completion in the core. 9646f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 965209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams spin_lock_irqsave(&isci_host->scic_lock, flags); 966209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams spin_lock(&task->task_state_lock); 967209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams 968209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams old_request = task->lldd_task; 969209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams 970209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams /* If task is already done, the request isn't valid */ 971209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams if (!(task->task_state_flags & SAS_TASK_STATE_DONE) && 972209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams (task->task_state_flags & SAS_TASK_AT_INITIATOR) && 973209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams old_request) 974209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams isci_device = isci_lookup_device(task->dev); 975209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams 976209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams spin_unlock(&task->task_state_lock); 977209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams spin_unlock_irqrestore(&isci_host->scic_lock, flags); 9786f231dda68080759f1aed3769896e94c73099f0fDan Williams 9796f231dda68080759f1aed3769896e94c73099f0fDan Williams dev_dbg(&isci_host->pdev->dev, 98098145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin "%s: dev = %p, task = %p, old_request == %p\n", 98198145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin __func__, isci_device, task, old_request); 9826f231dda68080759f1aed3769896e94c73099f0fDan Williams 98398145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin /* Device reset conditions signalled in task_state_flags are the 98498145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin * responsbility of libsas to observe at the start of the error 98598145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin * handler thread. 9866f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 98798145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin if (!isci_device || !old_request) { 98898145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin /* The request has already completed and there 98998145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin * is nothing to do here other than to set the task 99098145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin * done bit, and indicate that the task abort function 99198145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin * was sucessful. 99298145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin */ 99398145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin spin_lock_irqsave(&task->task_state_lock, flags); 99498145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin task->task_state_flags |= SAS_TASK_STATE_DONE; 99598145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | 99698145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin SAS_TASK_STATE_PENDING); 99798145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin spin_unlock_irqrestore(&task->task_state_lock, flags); 9986f231dda68080759f1aed3769896e94c73099f0fDan Williams 99998145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin ret = TMF_RESP_FUNC_COMPLETE; 10006f231dda68080759f1aed3769896e94c73099f0fDan Williams 100198145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin dev_dbg(&isci_host->pdev->dev, 100298145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin "%s: abort task not needed for %p\n", 100398145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin __func__, task); 1004209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams goto out; 1005a5ec7f86dc5432c44d8407a144e7617ec65da770James Bottomley } 10066f231dda68080759f1aed3769896e94c73099f0fDan Williams 10076f231dda68080759f1aed3769896e94c73099f0fDan Williams spin_lock_irqsave(&isci_host->scic_lock, flags); 10086f231dda68080759f1aed3769896e94c73099f0fDan Williams 1009f219f010a355487638bf2fff4724a420e7158fd2Jeff Skirvin /* Check the request status and change to "aborted" if currently 1010a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin * "starting"; if true then set the I/O kernel completion 10116f231dda68080759f1aed3769896e94c73099f0fDan Williams * struct that will be triggered when the request completes. 10126f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 1013a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin old_state = isci_task_validate_request_to_abort( 1014a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin old_request, isci_host, isci_device, 1015a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin &aborted_io_completion); 1016f219f010a355487638bf2fff4724a420e7158fd2Jeff Skirvin if ((old_state != started) && 1017f219f010a355487638bf2fff4724a420e7158fd2Jeff Skirvin (old_state != completed) && 1018f219f010a355487638bf2fff4724a420e7158fd2Jeff Skirvin (old_state != aborting)) { 10196f231dda68080759f1aed3769896e94c73099f0fDan Williams 10206f231dda68080759f1aed3769896e94c73099f0fDan Williams spin_unlock_irqrestore(&isci_host->scic_lock, flags); 10216f231dda68080759f1aed3769896e94c73099f0fDan Williams 1022a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin /* The request was already being handled by someone else (because 1023a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin * they got to set the state away from started). 1024a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin */ 1025a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin dev_dbg(&isci_host->pdev->dev, 1026a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin "%s: device = %p; old_request %p already being aborted\n", 1027a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin __func__, 1028a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin isci_device, old_request); 1029209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams ret = TMF_RESP_FUNC_COMPLETE; 1030209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams goto out; 10316f231dda68080759f1aed3769896e94c73099f0fDan Williams } 103238d8879baeb61b6946052739e7c03fa79b3a57f0Dan Williams if (task->task_proto == SAS_PROTOCOL_SMP || 103398145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin sas_protocol_ata(task->task_proto) || 103438d8879baeb61b6946052739e7c03fa79b3a57f0Dan Williams test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)) { 10356f231dda68080759f1aed3769896e94c73099f0fDan Williams 10366f231dda68080759f1aed3769896e94c73099f0fDan Williams spin_unlock_irqrestore(&isci_host->scic_lock, flags); 10376f231dda68080759f1aed3769896e94c73099f0fDan Williams 1038a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin dev_dbg(&isci_host->pdev->dev, 103998145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin "%s: %s request" 1040a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin " or complete_in_target (%d), thus no TMF\n", 104198145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin __func__, 104298145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin ((task->task_proto == SAS_PROTOCOL_SMP) 104398145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin ? "SMP" 104498145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin : (sas_protocol_ata(task->task_proto) 104598145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin ? "SATA/STP" 104698145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin : "<other>") 104798145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin ), 104838d8879baeb61b6946052739e7c03fa79b3a57f0Dan Williams test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)); 1049a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin 105098145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin if (test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)) { 105198145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin spin_lock_irqsave(&task->task_state_lock, flags); 105298145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin task->task_state_flags |= SAS_TASK_STATE_DONE; 105398145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | 105498145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin SAS_TASK_STATE_PENDING); 105598145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin spin_unlock_irqrestore(&task->task_state_lock, flags); 105698145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin ret = TMF_RESP_FUNC_COMPLETE; 105798145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin } else { 105898145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin spin_lock_irqsave(&task->task_state_lock, flags); 105998145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | 106098145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin SAS_TASK_STATE_PENDING); 106198145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin spin_unlock_irqrestore(&task->task_state_lock, flags); 106298145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin } 10636f231dda68080759f1aed3769896e94c73099f0fDan Williams 106498145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin /* STP and SMP devices are not sent a TMF, but the 106598145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin * outstanding I/O request is terminated below. This is 106698145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin * because SATA/STP and SMP discovery path timeouts directly 106798145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin * call the abort task interface for cleanup. 10686f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 106998145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin perform_termination = 1; 107098145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin 10716f231dda68080759f1aed3769896e94c73099f0fDan Williams } else { 10726f231dda68080759f1aed3769896e94c73099f0fDan Williams /* Fill in the tmf stucture */ 1073209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams isci_task_build_abort_task_tmf(&tmf, isci_tmf_ssp_task_abort, 1074c3f42feb0c3d20dc7007336e7de949408b93afefJeff Skirvin isci_abort_task_process_cb, 1075c3f42feb0c3d20dc7007336e7de949408b93afefJeff Skirvin old_request); 10766f231dda68080759f1aed3769896e94c73099f0fDan Williams 10776f231dda68080759f1aed3769896e94c73099f0fDan Williams spin_unlock_irqrestore(&isci_host->scic_lock, flags); 10786f231dda68080759f1aed3769896e94c73099f0fDan Williams 107998145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin #define ISCI_ABORT_TASK_TIMEOUT_MS 500 /* 1/2 second timeout */ 1080209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams ret = isci_task_execute_tmf(isci_host, isci_device, &tmf, 10816f231dda68080759f1aed3769896e94c73099f0fDan Williams ISCI_ABORT_TASK_TIMEOUT_MS); 10826f231dda68080759f1aed3769896e94c73099f0fDan Williams 108398145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin if (ret == TMF_RESP_FUNC_COMPLETE) 108498145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin perform_termination = 1; 108598145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin else 1086a8a0a133b03c6863d0f77229d19befca4de905faDan Williams dev_dbg(&isci_host->pdev->dev, 108798145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin "%s: isci_task_send_tmf failed\n", __func__); 10886f231dda68080759f1aed3769896e94c73099f0fDan Williams } 108998145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin if (perform_termination) { 109038d8879baeb61b6946052739e7c03fa79b3a57f0Dan Williams set_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags); 1091a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin 109277c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin /* Clean up the request on our side, and wait for the aborted 109377c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin * I/O to complete. 109477c852f312243192b1f2ce7fc56d678784786692Jeff Skirvin */ 109598145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin isci_terminate_request_core(isci_host, isci_device, 109698145cb722b51ccc3ba27166c9803545accba950Jeff Skirvin old_request); 1097a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin } 10986f231dda68080759f1aed3769896e94c73099f0fDan Williams 1099a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin /* Make sure we do not leave a reference to aborted_io_completion */ 1100a5fde225364df30507ba1a5aafeec85e595000d3Jeff Skirvin old_request->io_request_completion = NULL; 1101209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams out: 1102209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams isci_put_device(isci_device); 11036f231dda68080759f1aed3769896e94c73099f0fDan Williams return ret; 11046f231dda68080759f1aed3769896e94c73099f0fDan Williams} 11056f231dda68080759f1aed3769896e94c73099f0fDan Williams 11066f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 11076f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_task_abort_task_set() - This function is one of the SAS Domain Template 11086f231dda68080759f1aed3769896e94c73099f0fDan Williams * functions. This is one of the Task Management functoins called by libsas, 11096f231dda68080759f1aed3769896e94c73099f0fDan Williams * to abort all task for the given lun. 11106f231dda68080759f1aed3769896e94c73099f0fDan Williams * @d_device: This parameter specifies the domain device associated with this 11116f231dda68080759f1aed3769896e94c73099f0fDan Williams * request. 11126f231dda68080759f1aed3769896e94c73099f0fDan Williams * @lun: This parameter specifies the lun associated with this request. 11136f231dda68080759f1aed3769896e94c73099f0fDan Williams * 11146f231dda68080759f1aed3769896e94c73099f0fDan Williams * status, zero indicates success. 11156f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 11166f231dda68080759f1aed3769896e94c73099f0fDan Williamsint isci_task_abort_task_set( 11176f231dda68080759f1aed3769896e94c73099f0fDan Williams struct domain_device *d_device, 11186f231dda68080759f1aed3769896e94c73099f0fDan Williams u8 *lun) 11196f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 11206f231dda68080759f1aed3769896e94c73099f0fDan Williams return TMF_RESP_FUNC_FAILED; 11216f231dda68080759f1aed3769896e94c73099f0fDan Williams} 11226f231dda68080759f1aed3769896e94c73099f0fDan Williams 11236f231dda68080759f1aed3769896e94c73099f0fDan Williams 11246f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 11256f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_task_clear_aca() - This function is one of the SAS Domain Template 11266f231dda68080759f1aed3769896e94c73099f0fDan Williams * functions. This is one of the Task Management functoins called by libsas. 11276f231dda68080759f1aed3769896e94c73099f0fDan Williams * @d_device: This parameter specifies the domain device associated with this 11286f231dda68080759f1aed3769896e94c73099f0fDan Williams * request. 11296f231dda68080759f1aed3769896e94c73099f0fDan Williams * @lun: This parameter specifies the lun associated with this request. 11306f231dda68080759f1aed3769896e94c73099f0fDan Williams * 11316f231dda68080759f1aed3769896e94c73099f0fDan Williams * status, zero indicates success. 11326f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 11336f231dda68080759f1aed3769896e94c73099f0fDan Williamsint isci_task_clear_aca( 11346f231dda68080759f1aed3769896e94c73099f0fDan Williams struct domain_device *d_device, 11356f231dda68080759f1aed3769896e94c73099f0fDan Williams u8 *lun) 11366f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 11376f231dda68080759f1aed3769896e94c73099f0fDan Williams return TMF_RESP_FUNC_FAILED; 11386f231dda68080759f1aed3769896e94c73099f0fDan Williams} 11396f231dda68080759f1aed3769896e94c73099f0fDan Williams 11406f231dda68080759f1aed3769896e94c73099f0fDan Williams 11416f231dda68080759f1aed3769896e94c73099f0fDan Williams 11426f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 11436f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_task_clear_task_set() - This function is one of the SAS Domain Template 11446f231dda68080759f1aed3769896e94c73099f0fDan Williams * functions. This is one of the Task Management functoins called by libsas. 11456f231dda68080759f1aed3769896e94c73099f0fDan Williams * @d_device: This parameter specifies the domain device associated with this 11466f231dda68080759f1aed3769896e94c73099f0fDan Williams * request. 11476f231dda68080759f1aed3769896e94c73099f0fDan Williams * @lun: This parameter specifies the lun associated with this request. 11486f231dda68080759f1aed3769896e94c73099f0fDan Williams * 11496f231dda68080759f1aed3769896e94c73099f0fDan Williams * status, zero indicates success. 11506f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 11516f231dda68080759f1aed3769896e94c73099f0fDan Williamsint isci_task_clear_task_set( 11526f231dda68080759f1aed3769896e94c73099f0fDan Williams struct domain_device *d_device, 11536f231dda68080759f1aed3769896e94c73099f0fDan Williams u8 *lun) 11546f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 11556f231dda68080759f1aed3769896e94c73099f0fDan Williams return TMF_RESP_FUNC_FAILED; 11566f231dda68080759f1aed3769896e94c73099f0fDan Williams} 11576f231dda68080759f1aed3769896e94c73099f0fDan Williams 11586f231dda68080759f1aed3769896e94c73099f0fDan Williams 11596f231dda68080759f1aed3769896e94c73099f0fDan Williams/** 11606f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_task_query_task() - This function is implemented to cause libsas to 11616f231dda68080759f1aed3769896e94c73099f0fDan Williams * correctly escalate the failed abort to a LUN or target reset (this is 11626f231dda68080759f1aed3769896e94c73099f0fDan Williams * because sas_scsi_find_task libsas function does not correctly interpret 11636f231dda68080759f1aed3769896e94c73099f0fDan Williams * all return codes from the abort task call). When TMF_RESP_FUNC_SUCC is 11646f231dda68080759f1aed3769896e94c73099f0fDan Williams * returned, libsas turns this into a LUN reset; when FUNC_FAILED is 11656f231dda68080759f1aed3769896e94c73099f0fDan Williams * returned, libsas will turn this into a target reset 11666f231dda68080759f1aed3769896e94c73099f0fDan Williams * @task: This parameter specifies the sas task being queried. 11676f231dda68080759f1aed3769896e94c73099f0fDan Williams * @lun: This parameter specifies the lun associated with this request. 11686f231dda68080759f1aed3769896e94c73099f0fDan Williams * 11696f231dda68080759f1aed3769896e94c73099f0fDan Williams * status, zero indicates success. 11706f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 11716f231dda68080759f1aed3769896e94c73099f0fDan Williamsint isci_task_query_task( 11726f231dda68080759f1aed3769896e94c73099f0fDan Williams struct sas_task *task) 11736f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 11746f231dda68080759f1aed3769896e94c73099f0fDan Williams /* See if there is a pending device reset for this device. */ 11756f231dda68080759f1aed3769896e94c73099f0fDan Williams if (task->task_state_flags & SAS_TASK_NEED_DEV_RESET) 11766f231dda68080759f1aed3769896e94c73099f0fDan Williams return TMF_RESP_FUNC_FAILED; 11776f231dda68080759f1aed3769896e94c73099f0fDan Williams else 11786f231dda68080759f1aed3769896e94c73099f0fDan Williams return TMF_RESP_FUNC_SUCC; 11796f231dda68080759f1aed3769896e94c73099f0fDan Williams} 11806f231dda68080759f1aed3769896e94c73099f0fDan Williams 1181af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiang/* 11826f231dda68080759f1aed3769896e94c73099f0fDan Williams * isci_task_request_complete() - This function is called by the sci core when 11836f231dda68080759f1aed3769896e94c73099f0fDan Williams * an task request completes. 1184af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiang * @ihost: This parameter specifies the ISCI host object 1185af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiang * @ireq: This parameter is the completed isci_request object. 11866f231dda68080759f1aed3769896e94c73099f0fDan Williams * @completion_status: This parameter specifies the completion status from the 11876f231dda68080759f1aed3769896e94c73099f0fDan Williams * sci core. 11886f231dda68080759f1aed3769896e94c73099f0fDan Williams * 11896f231dda68080759f1aed3769896e94c73099f0fDan Williams * none. 11906f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 1191af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiangvoid 1192af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiangisci_task_request_complete(struct isci_host *ihost, 1193af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiang struct isci_request *ireq, 1194af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiang enum sci_task_status completion_status) 11956f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 1196af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiang struct isci_tmf *tmf = isci_request_access_tmf(ireq); 1197b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin struct completion *tmf_complete = NULL; 1198b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin struct completion *request_complete = ireq->io_request_completion; 11996f231dda68080759f1aed3769896e94c73099f0fDan Williams 1200af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiang dev_dbg(&ihost->pdev->dev, 12016f231dda68080759f1aed3769896e94c73099f0fDan Williams "%s: request = %p, status=%d\n", 1202af5ae89350840b9d724fc4fb81d928673bffdd4dDave Jiang __func__, ireq, completion_status); 12036f231dda68080759f1aed3769896e94c73099f0fDan Williams 12048d2c65c09c9e0adc16070562e7944c1c3277f332Dave Jiang isci_request_change_state(ireq, completed); 12056f231dda68080759f1aed3769896e94c73099f0fDan Williams 120638d8879baeb61b6946052739e7c03fa79b3a57f0Dan Williams set_bit(IREQ_COMPLETE_IN_TARGET, &ireq->flags); 12076f231dda68080759f1aed3769896e94c73099f0fDan Williams 1208b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin if (tmf) { 1209b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin tmf->status = completion_status; 1210b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 1211b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin if (tmf->proto == SAS_PROTOCOL_SSP) { 1212b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin memcpy(&tmf->resp.resp_iu, 1213b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin &ireq->ssp.rsp, 1214b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin SSP_RESP_IU_MAX_SIZE); 1215b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin } else if (tmf->proto == SAS_PROTOCOL_SATA) { 1216b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin memcpy(&tmf->resp.d2h_fis, 1217b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin &ireq->stp.rsp, 1218b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin sizeof(struct dev_to_host_fis)); 1219b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin } 1220b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin /* PRINT_TMF( ((struct isci_tmf *)request->task)); */ 1221b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin tmf_complete = tmf->complete; 12226f231dda68080759f1aed3769896e94c73099f0fDan Williams } 122389a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams sci_controller_complete_io(ihost, ireq->target_device, ireq); 122467ea838d17acdad3331aeae848683c768df96aaaDan Williams /* set the 'terminated' flag handle to make sure it cannot be terminated 12256f231dda68080759f1aed3769896e94c73099f0fDan Williams * or completed again. 12266f231dda68080759f1aed3769896e94c73099f0fDan Williams */ 122738d8879baeb61b6946052739e7c03fa79b3a57f0Dan Williams set_bit(IREQ_TERMINATED, &ireq->flags); 12286f231dda68080759f1aed3769896e94c73099f0fDan Williams 1229d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin /* As soon as something is in the terminate path, deallocation is 1230d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin * managed there. Note that the final non-managed state of a task 1231d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin * request is "completed". 1232d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin */ 1233d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin if ((ireq->status == completed) || 1234d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin !isci_request_is_dealloc_managed(ireq->status)) { 1235d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin isci_request_change_state(ireq, unallocated); 1236d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin isci_free_tag(ihost, ireq->io_tag); 1237d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin list_del_init(&ireq->dev_node); 1238d6891682220c18c01bf6838f30e37342c38fde44Jeff Skirvin } 12396f231dda68080759f1aed3769896e94c73099f0fDan Williams 1240b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin /* "request_complete" is set if the task was being terminated. */ 1241b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin if (request_complete) 1242b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin complete(request_complete); 1243b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin 12446f231dda68080759f1aed3769896e94c73099f0fDan Williams /* The task management part completes last. */ 1245b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin if (tmf_complete) 1246b343dff1a269bcc0eac123ef541c5476b03d52c1Jeff Skirvin complete(tmf_complete); 12476f231dda68080759f1aed3769896e94c73099f0fDan Williams} 12486f231dda68080759f1aed3769896e94c73099f0fDan Williams 1249209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williamsstatic int isci_reset_device(struct isci_host *ihost, 12509277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams struct domain_device *dev, 1251bc6f387d3156702a0430585b93c04934254c0de1Jeff Skirvin struct isci_remote_device *idev) 12526f231dda68080759f1aed3769896e94c73099f0fDan Williams{ 1253d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams int rc; 12549277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams unsigned long flags; 12559277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams enum sci_status status; 12569277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams struct sas_phy *phy = sas_get_local_phy(dev); 12579277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams struct isci_port *iport = dev->port->lldd_port; 12586f231dda68080759f1aed3769896e94c73099f0fDan Williams 1259d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams dev_dbg(&ihost->pdev->dev, "%s: idev %p\n", __func__, idev); 12606f231dda68080759f1aed3769896e94c73099f0fDan Williams 1261d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 126289a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams status = sci_remote_device_reset(idev); 12639277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 12646f231dda68080759f1aed3769896e94c73099f0fDan Williams 12659277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams if (status != SCI_SUCCESS) { 1266a8a0a133b03c6863d0f77229d19befca4de905faDan Williams dev_dbg(&ihost->pdev->dev, 126789a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams "%s: sci_remote_device_reset(%p) returned %d!\n", 1268d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams __func__, idev, status); 1269f41a0c441c3fe43e79ebeb75584dbb5bfa83e5cdDan Williams rc = TMF_RESP_FUNC_FAILED; 1270f41a0c441c3fe43e79ebeb75584dbb5bfa83e5cdDan Williams goto out; 12716f231dda68080759f1aed3769896e94c73099f0fDan Williams } 12726f231dda68080759f1aed3769896e94c73099f0fDan Williams 12739277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams if (scsi_is_sas_phy_local(phy)) { 12749277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams struct isci_phy *iphy = &ihost->phys[phy->number]; 12759277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams 12769277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams rc = isci_port_perform_hard_reset(ihost, iport, iphy); 12779277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams } else 12789277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams rc = sas_phy_reset(phy, !dev_is_sata(dev)); 12796f231dda68080759f1aed3769896e94c73099f0fDan Williams 1280d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams /* Terminate in-progress I/O now. */ 1281d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams isci_remote_device_nuke_requests(ihost, idev); 12826f231dda68080759f1aed3769896e94c73099f0fDan Williams 1283ff717ab05f0c33f93514eccea6dfe1a15983e1d1Jeff Skirvin /* Since all pending TCs have been cleaned, resume the RNC. */ 1284d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 128589a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams status = sci_remote_device_reset_complete(idev); 1286d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 12876f231dda68080759f1aed3769896e94c73099f0fDan Williams 1288d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams if (status != SCI_SUCCESS) { 1289a8a0a133b03c6863d0f77229d19befca4de905faDan Williams dev_dbg(&ihost->pdev->dev, 129089a7301f21fb00e753089671eb9e4132aab8ea08Dan Williams "%s: sci_remote_device_reset_complete(%p) " 1291d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams "returned %d!\n", __func__, idev, status); 12926f231dda68080759f1aed3769896e94c73099f0fDan Williams } 12936f231dda68080759f1aed3769896e94c73099f0fDan Williams 1294d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams dev_dbg(&ihost->pdev->dev, "%s: idev %p complete.\n", __func__, idev); 1295f41a0c441c3fe43e79ebeb75584dbb5bfa83e5cdDan Williams out: 1296f41a0c441c3fe43e79ebeb75584dbb5bfa83e5cdDan Williams sas_put_local_phy(phy); 1297d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams return rc; 1298d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams} 12996f231dda68080759f1aed3769896e94c73099f0fDan Williams 1300d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williamsint isci_task_I_T_nexus_reset(struct domain_device *dev) 1301d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams{ 1302d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams struct isci_host *ihost = dev_to_ihost(dev); 1303d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams struct isci_remote_device *idev; 1304d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams unsigned long flags; 1305bc6f387d3156702a0430585b93c04934254c0de1Jeff Skirvin int ret; 1306d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams 1307d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams spin_lock_irqsave(&ihost->scic_lock, flags); 1308209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams idev = isci_lookup_device(dev); 1309d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams spin_unlock_irqrestore(&ihost->scic_lock, flags); 1310d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams 13115a998328296cb16cb8b0307a402a0f2feab533c5Dan Williams if (!idev) { 13125a998328296cb16cb8b0307a402a0f2feab533c5Dan Williams /* XXX: need to cleanup any ireqs targeting this 13135a998328296cb16cb8b0307a402a0f2feab533c5Dan Williams * domain_device 13145a998328296cb16cb8b0307a402a0f2feab533c5Dan Williams */ 1315209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams ret = TMF_RESP_FUNC_COMPLETE; 1316209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams goto out; 1317209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams } 1318d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams 13199277699121b81891e303ada0a53fa1d04b7ffe72Dan Williams ret = isci_reset_device(ihost, dev, idev); 1320209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams out: 1321209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams isci_put_device(idev); 1322209fae14fabfd48525e5630bebbbd4ca15090c60Dan Williams return ret; 1323d06b487b78f28a02efdcdcc9ec295bf230b9d0e8Dan Williams} 1324