^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * This file is provided under a dual BSD/GPLv2 license. When using or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * redistributing this file, you may do so under either license.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * GPL LICENSE SUMMARY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * This program is free software; you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * it under the terms of version 2 of the GNU General Public License as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * published by the Free Software Foundation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * This program is distributed in the hope that it will be useful, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * You should have received a copy of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * along with this program; if not, write to the Free Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * The full GNU General Public License is included in this distribution
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * in the file called LICENSE.GPL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * BSD LICENSE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * Redistribution and use in source and binary forms, with or without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * modification, are permitted provided that the following conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * * Redistributions of source code must retain the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * notice, this list of conditions and the following disclaimer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * * Redistributions in binary form must reproduce the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * notice, this list of conditions and the following disclaimer in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * the documentation and/or other materials provided with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * distribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * * Neither the name of Intel Corporation nor the names of its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * contributors may be used to endorse or promote products derived
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * from this software without specific prior written permission.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #include <linux/irqflags.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #include "sas.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #include <scsi/libsas.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #include "remote_device.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #include "remote_node_context.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #include "isci.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #include "request.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #include "task.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #include "host.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * isci_task_refuse() - complete the request to the upper layer driver in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * the case where an I/O needs to be completed back in the submit path.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * @ihost: host on which the the request was queued
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * @task: request to complete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * @response: response code for the completed task.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * @status: status code for the completed task.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static void isci_task_refuse(struct isci_host *ihost, struct sas_task *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) enum service_response response,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) enum exec_status status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* Normal notification (task_done) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) dev_dbg(&ihost->pdev->dev, "%s: task = %p, response=%d, status=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) __func__, task, response, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) spin_lock_irqsave(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) task->task_status.resp = response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) task->task_status.stat = status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /* Normal notification (task_done) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) task->task_state_flags |= SAS_TASK_STATE_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) SAS_TASK_STATE_PENDING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) task->lldd_task = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) spin_unlock_irqrestore(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) task->task_done(task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define for_each_sas_task(num, task) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) for (; num > 0; num--,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) task = list_entry(task->list.next, struct sas_task, list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static inline int isci_device_io_ready(struct isci_remote_device *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct sas_task *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return idev ? test_bit(IDEV_IO_READY, &idev->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) (test_bit(IDEV_IO_NCQERROR, &idev->flags) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) isci_task_is_ncq_recovery(task))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * isci_task_execute_task() - This function is one of the SAS Domain Template
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * functions. This function is called by libsas to send a task down to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * hardware.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * @task: This parameter specifies the SAS task to send.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * @gfp_flags: This parameter specifies the context of this call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * status, zero indicates success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) int isci_task_execute_task(struct sas_task *task, gfp_t gfp_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct isci_host *ihost = dev_to_ihost(task->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct isci_remote_device *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) enum sci_status status = SCI_FAILURE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) bool io_ready;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) u16 tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) spin_lock_irqsave(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) idev = isci_lookup_device(task->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) io_ready = isci_device_io_ready(idev, task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) tag = isci_alloc_tag(ihost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) dev_dbg(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) "task: %p, dev: %p idev: %p:%#lx cmd = %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) task, task->dev, idev, idev ? idev->flags : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) task->uldd_task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (!idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) isci_task_refuse(ihost, task, SAS_TASK_UNDELIVERED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) SAS_DEVICE_UNKNOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) } else if (!io_ready || tag == SCI_CONTROLLER_INVALID_IO_TAG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /* Indicate QUEUE_FULL so that the scsi midlayer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * retries.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) isci_task_refuse(ihost, task, SAS_TASK_COMPLETE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) SAS_QUEUE_FULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /* There is a device and it's ready for I/O. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) spin_lock_irqsave(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) /* The I/O was aborted. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) spin_unlock_irqrestore(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) isci_task_refuse(ihost, task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) SAS_TASK_UNDELIVERED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) SAM_STAT_TASK_ABORTED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) task->task_state_flags |= SAS_TASK_AT_INITIATOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) spin_unlock_irqrestore(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /* build and send the request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) status = isci_request_execute(ihost, idev, task, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (status != SCI_SUCCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) spin_lock_irqsave(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /* Did not really start this command. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) spin_unlock_irqrestore(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (test_bit(IDEV_GONE, &idev->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) /* Indicate that the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * is gone.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) isci_task_refuse(ihost, task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) SAS_TASK_UNDELIVERED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) SAS_DEVICE_UNKNOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) /* Indicate QUEUE_FULL so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * the scsi midlayer retries.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * If the request failed for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * remote device reasons, it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * gets returned as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * SAS_TASK_UNDELIVERED next
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * time through.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) isci_task_refuse(ihost, task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) SAS_TASK_COMPLETE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) SAS_QUEUE_FULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (status != SCI_SUCCESS && tag != SCI_CONTROLLER_INVALID_IO_TAG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) spin_lock_irqsave(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) /* command never hit the device, so just free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * the tci and skip the sequence increment
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) isci_tci_free(ihost, ISCI_TAG_TCI(tag));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) isci_put_device(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static struct isci_request *isci_task_request_build(struct isci_host *ihost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct isci_remote_device *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) u16 tag, struct isci_tmf *isci_tmf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) enum sci_status status = SCI_FAILURE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct isci_request *ireq = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) struct domain_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) dev_dbg(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) "%s: isci_tmf = %p\n", __func__, isci_tmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) dev = idev->domain_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) /* do common allocation and init of request object. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ireq = isci_tmf_request_from_tag(ihost, isci_tmf, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (!ireq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) /* let the core do it's construct. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) status = sci_task_request_construct(ihost, idev, tag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) ireq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (status != SCI_SUCCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) dev_warn(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) "%s: sci_task_request_construct failed - "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) "status = 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) /* XXX convert to get this from task->tproto like other drivers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) if (dev->dev_type == SAS_END_DEVICE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) isci_tmf->proto = SAS_PROTOCOL_SSP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) status = sci_task_request_construct_ssp(ireq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (status != SCI_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) return ireq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static int isci_task_execute_tmf(struct isci_host *ihost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct isci_remote_device *idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) struct isci_tmf *tmf, unsigned long timeout_ms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) DECLARE_COMPLETION_ONSTACK(completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) enum sci_status status = SCI_FAILURE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) struct isci_request *ireq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) int ret = TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) unsigned long timeleft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) u16 tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) spin_lock_irqsave(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) tag = isci_alloc_tag(ihost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (tag == SCI_CONTROLLER_INVALID_IO_TAG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /* sanity check, return TMF_RESP_FUNC_FAILED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * if the device is not there and ready.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) if (!idev ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) (!test_bit(IDEV_IO_READY, &idev->flags) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) !test_bit(IDEV_IO_NCQERROR, &idev->flags))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) dev_dbg(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) "%s: idev = %p not ready (%#lx)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) idev, idev ? idev->flags : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) goto err_tci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) dev_dbg(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) "%s: idev = %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) __func__, idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) /* Assign the pointer to the TMF's completion kernel wait structure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) tmf->complete = &completion;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) tmf->status = SCI_FAILURE_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) ireq = isci_task_request_build(ihost, idev, tag, tmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (!ireq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) goto err_tci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) spin_lock_irqsave(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) /* start the TMF io. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) status = sci_controller_start_task(ihost, idev, ireq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (status != SCI_SUCCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) dev_dbg(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) "%s: start_io failed - status = 0x%x, request = %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) ireq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) goto err_tci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) /* The RNC must be unsuspended before the TMF can get a response. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) isci_remote_device_resume_from_abort(ihost, idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) /* Wait for the TMF to complete, or a timeout. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) timeleft = wait_for_completion_timeout(&completion,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) msecs_to_jiffies(timeout_ms));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (timeleft == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) /* The TMF did not complete - this could be because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * of an unplug. Terminate the TMF request now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) isci_remote_device_suspend_terminate(ihost, idev, ireq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) isci_print_tmf(ihost, tmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (tmf->status == SCI_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) ret = TMF_RESP_FUNC_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) else if (tmf->status == SCI_FAILURE_IO_RESPONSE_VALID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) dev_dbg(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) "%s: tmf.status == "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) "SCI_FAILURE_IO_RESPONSE_VALID\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) ret = TMF_RESP_FUNC_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) /* Else - leave the default "failed" status alone. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) dev_dbg(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) "%s: completed request = %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) ireq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) err_tci:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) spin_lock_irqsave(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) isci_tci_free(ihost, ISCI_TAG_TCI(tag));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) static void isci_task_build_tmf(struct isci_tmf *tmf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) enum isci_tmf_function_codes code)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) memset(tmf, 0, sizeof(*tmf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) tmf->tmf_code = code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static void isci_task_build_abort_task_tmf(struct isci_tmf *tmf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) enum isci_tmf_function_codes code,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct isci_request *old_request)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) isci_task_build_tmf(tmf, code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) tmf->io_tag = old_request->io_tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) * isci_task_send_lu_reset_sas() - This function is called by of the SAS Domain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) * Template functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) * @lun: This parameter specifies the lun to be reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) * status, zero indicates success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static int isci_task_send_lu_reset_sas(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) struct isci_host *isci_host,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) struct isci_remote_device *isci_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) u8 *lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) struct isci_tmf tmf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) int ret = TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) dev_dbg(&isci_host->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) "%s: isci_host = %p, isci_device = %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) __func__, isci_host, isci_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) /* Send the LUN reset to the target. By the time the call returns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) * the TMF has fully exected in the target (in which case the return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) * value is "TMF_RESP_FUNC_COMPLETE", or the request timed-out (or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) * was otherwise unable to be executed ("TMF_RESP_FUNC_FAILED").
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) isci_task_build_tmf(&tmf, isci_tmf_ssp_lun_reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) #define ISCI_LU_RESET_TIMEOUT_MS 2000 /* 2 second timeout. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) ret = isci_task_execute_tmf(isci_host, isci_device, &tmf, ISCI_LU_RESET_TIMEOUT_MS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) if (ret == TMF_RESP_FUNC_COMPLETE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) dev_dbg(&isci_host->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) "%s: %p: TMF_LU_RESET passed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) __func__, isci_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) dev_dbg(&isci_host->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) "%s: %p: TMF_LU_RESET failed (%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) __func__, isci_device, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) int isci_task_lu_reset(struct domain_device *dev, u8 *lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) struct isci_host *ihost = dev_to_ihost(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) struct isci_remote_device *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) int ret = TMF_RESP_FUNC_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) spin_lock_irqsave(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) idev = isci_get_device(dev->lldd_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) dev_dbg(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) "%s: domain_device=%p, isci_host=%p; isci_device=%p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) __func__, dev, ihost, idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if (!idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) /* If the device is gone, escalate to I_T_Nexus_Reset. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) dev_dbg(&ihost->pdev->dev, "%s: No dev\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) ret = TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) /* Suspend the RNC, kill all TCs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (isci_remote_device_suspend_terminate(ihost, idev, NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) != SCI_SUCCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) /* The suspend/terminate only fails if isci_get_device fails */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) ret = TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) /* All pending I/Os have been terminated and cleaned up. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (!test_bit(IDEV_GONE, &idev->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (dev_is_sata(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) sas_ata_schedule_reset(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) /* Send the task management part of the reset. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ret = isci_task_send_lu_reset_sas(ihost, idev, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) isci_put_device(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) /* int (*lldd_clear_nexus_port)(struct asd_sas_port *); */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) int isci_task_clear_nexus_port(struct asd_sas_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) return TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) int isci_task_clear_nexus_ha(struct sas_ha_struct *ha)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) return TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) /* Task Management Functions. Must be called from process context. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * isci_task_abort_task() - This function is one of the SAS Domain Template
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) * functions. This function is called by libsas to abort a specified task.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * @task: This parameter specifies the SAS task to abort.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * status, zero indicates success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) int isci_task_abort_task(struct sas_task *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) struct isci_host *ihost = dev_to_ihost(task->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) DECLARE_COMPLETION_ONSTACK(aborted_io_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) struct isci_request *old_request = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) struct isci_remote_device *idev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) struct isci_tmf tmf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) int ret = TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) int target_done_already = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) /* Get the isci_request reference from the task. Note that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) * this check does not depend on the pending request list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) * in the device, because tasks driving resets may land here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) * after completion in the core.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) spin_lock_irqsave(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) spin_lock(&task->task_state_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) old_request = task->lldd_task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) /* If task is already done, the request isn't valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (!(task->task_state_flags & SAS_TASK_STATE_DONE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) (task->task_state_flags & SAS_TASK_AT_INITIATOR) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) old_request) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) idev = isci_get_device(task->dev->lldd_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) target_done_already = test_bit(IREQ_COMPLETE_IN_TARGET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) &old_request->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) spin_unlock(&task->task_state_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) dev_warn(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) "%s: dev = %p (%s%s), task = %p, old_request == %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) __func__, idev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) (dev_is_sata(task->dev) ? "STP/SATA"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) : ((dev_is_expander(task->dev->dev_type))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) ? "SMP"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) : "SSP")),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) ((idev) ? ((test_bit(IDEV_GONE, &idev->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) ? " IDEV_GONE"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) : "")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) : " <NULL>"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) task, old_request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) /* Device reset conditions signalled in task_state_flags are the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) * responsbility of libsas to observe at the start of the error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) * handler thread.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) if (!idev || !old_request) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) /* The request has already completed and there
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * is nothing to do here other than to set the task
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) * done bit, and indicate that the task abort function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * was successful.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) spin_lock_irqsave(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) task->task_state_flags |= SAS_TASK_STATE_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) SAS_TASK_STATE_PENDING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) spin_unlock_irqrestore(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) ret = TMF_RESP_FUNC_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) dev_warn(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) "%s: abort task not needed for %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) __func__, task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) /* Suspend the RNC, kill the TC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) if (isci_remote_device_suspend_terminate(ihost, idev, old_request)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) != SCI_SUCCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) dev_warn(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) "%s: isci_remote_device_reset_terminate(dev=%p, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) "req=%p, task=%p) failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) __func__, idev, old_request, task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) ret = TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) spin_lock_irqsave(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) if (task->task_proto == SAS_PROTOCOL_SMP ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) sas_protocol_ata(task->task_proto) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) target_done_already ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) test_bit(IDEV_GONE, &idev->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) /* No task to send, so explicitly resume the device here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) isci_remote_device_resume_from_abort(ihost, idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) dev_warn(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) "%s: %s request"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) " or complete_in_target (%d), "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) "or IDEV_GONE (%d), thus no TMF\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) ((task->task_proto == SAS_PROTOCOL_SMP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) ? "SMP"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) : (sas_protocol_ata(task->task_proto)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) ? "SATA/STP"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) : "<other>")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) ),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) test_bit(IREQ_COMPLETE_IN_TARGET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) &old_request->flags),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) test_bit(IDEV_GONE, &idev->flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) spin_lock_irqsave(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) SAS_TASK_STATE_PENDING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) task->task_state_flags |= SAS_TASK_STATE_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) spin_unlock_irqrestore(&task->task_state_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) ret = TMF_RESP_FUNC_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) /* Fill in the tmf structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) isci_task_build_abort_task_tmf(&tmf, isci_tmf_ssp_task_abort,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) old_request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) /* Send the task management request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) #define ISCI_ABORT_TASK_TIMEOUT_MS 500 /* 1/2 second timeout */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) ret = isci_task_execute_tmf(ihost, idev, &tmf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) ISCI_ABORT_TASK_TIMEOUT_MS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) dev_warn(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) "%s: Done; dev = %p, task = %p , old_request == %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) __func__, idev, task, old_request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) isci_put_device(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) * isci_task_abort_task_set() - This function is one of the SAS Domain Template
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) * functions. This is one of the Task Management functoins called by libsas,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) * to abort all task for the given lun.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) * @d_device: This parameter specifies the domain device associated with this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) * @lun: This parameter specifies the lun associated with this request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) * status, zero indicates success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) int isci_task_abort_task_set(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) struct domain_device *d_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) u8 *lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) return TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) * isci_task_clear_aca() - This function is one of the SAS Domain Template
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) * functions. This is one of the Task Management functoins called by libsas.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) * @d_device: This parameter specifies the domain device associated with this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) * request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * @lun: This parameter specifies the lun associated with this request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) * status, zero indicates success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) int isci_task_clear_aca(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) struct domain_device *d_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) u8 *lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) return TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) * isci_task_clear_task_set() - This function is one of the SAS Domain Template
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) * functions. This is one of the Task Management functoins called by libsas.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) * @d_device: This parameter specifies the domain device associated with this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) * request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) * @lun: This parameter specifies the lun associated with this request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) * status, zero indicates success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) int isci_task_clear_task_set(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) struct domain_device *d_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) u8 *lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) return TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) * isci_task_query_task() - This function is implemented to cause libsas to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) * correctly escalate the failed abort to a LUN or target reset (this is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) * because sas_scsi_find_task libsas function does not correctly interpret
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) * all return codes from the abort task call). When TMF_RESP_FUNC_SUCC is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) * returned, libsas turns this into a LUN reset; when FUNC_FAILED is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) * returned, libsas will turn this into a target reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) * @task: This parameter specifies the sas task being queried.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) * @lun: This parameter specifies the lun associated with this request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) * status, zero indicates success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) int isci_task_query_task(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) struct sas_task *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) /* See if there is a pending device reset for this device. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (task->task_state_flags & SAS_TASK_NEED_DEV_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) return TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) return TMF_RESP_FUNC_SUCC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) * isci_task_request_complete() - This function is called by the sci core when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) * an task request completes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) * @ihost: This parameter specifies the ISCI host object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) * @ireq: This parameter is the completed isci_request object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) * @completion_status: This parameter specifies the completion status from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) * sci core.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) * none.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) isci_task_request_complete(struct isci_host *ihost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) struct isci_request *ireq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) enum sci_task_status completion_status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) struct isci_tmf *tmf = isci_request_access_tmf(ireq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) struct completion *tmf_complete = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) dev_dbg(&ihost->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) "%s: request = %p, status=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) __func__, ireq, completion_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) set_bit(IREQ_COMPLETE_IN_TARGET, &ireq->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) if (tmf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) tmf->status = completion_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) if (tmf->proto == SAS_PROTOCOL_SSP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) memcpy(&tmf->resp.resp_iu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) &ireq->ssp.rsp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) SSP_RESP_IU_MAX_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) } else if (tmf->proto == SAS_PROTOCOL_SATA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) memcpy(&tmf->resp.d2h_fis,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) &ireq->stp.rsp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) sizeof(struct dev_to_host_fis));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) /* PRINT_TMF( ((struct isci_tmf *)request->task)); */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) tmf_complete = tmf->complete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) sci_controller_complete_io(ihost, ireq->target_device, ireq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) /* set the 'terminated' flag handle to make sure it cannot be terminated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) * or completed again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) set_bit(IREQ_TERMINATED, &ireq->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) if (test_and_clear_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) wake_up_all(&ihost->eventq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) if (!test_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) isci_free_tag(ihost, ireq->io_tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) /* The task management part completes last. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) if (tmf_complete)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) complete(tmf_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) static int isci_reset_device(struct isci_host *ihost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) struct domain_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) struct isci_remote_device *idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) int rc = TMF_RESP_FUNC_COMPLETE, reset_stat = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) struct sas_phy *phy = sas_get_local_phy(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) struct isci_port *iport = dev->port->lldd_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) dev_dbg(&ihost->pdev->dev, "%s: idev %p\n", __func__, idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) /* Suspend the RNC, terminate all outstanding TCs. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) if (isci_remote_device_suspend_terminate(ihost, idev, NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) != SCI_SUCCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) rc = TMF_RESP_FUNC_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) /* Note that since the termination for outstanding requests succeeded,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) * this function will return success. This is because the resets will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) * only fail if the device has been removed (ie. hotplug), and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) * primary duty of this function is to cleanup tasks, so that is the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) * relevant status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) if (!test_bit(IDEV_GONE, &idev->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) if (scsi_is_sas_phy_local(phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) struct isci_phy *iphy = &ihost->phys[phy->number];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) reset_stat = isci_port_perform_hard_reset(ihost, iport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) iphy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) reset_stat = sas_phy_reset(phy, !dev_is_sata(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) /* Explicitly resume the RNC here, since there was no task sent. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) isci_remote_device_resume_from_abort(ihost, idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) dev_dbg(&ihost->pdev->dev, "%s: idev %p complete, reset_stat=%d.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) __func__, idev, reset_stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) sas_put_local_phy(phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) int isci_task_I_T_nexus_reset(struct domain_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) struct isci_host *ihost = dev_to_ihost(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) struct isci_remote_device *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) spin_lock_irqsave(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) idev = isci_get_device(dev->lldd_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) spin_unlock_irqrestore(&ihost->scic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) if (!idev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) /* XXX: need to cleanup any ireqs targeting this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) * domain_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) ret = isci_reset_device(ihost, dev, idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) isci_put_device(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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