2016-07-27 16:32:00 +00:00
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/*-
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* BSD LICENSE
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*
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* Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "scsi_internal.h"
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2016-08-02 17:43:00 +00:00
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#include "spdk/endian.h"
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2016-08-17 20:35:18 +00:00
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#include "spdk/env.h"
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2017-05-01 20:42:29 +00:00
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#include "spdk/util.h"
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2016-07-27 16:32:00 +00:00
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void
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2016-09-28 06:49:06 +00:00
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spdk_scsi_task_put(struct spdk_scsi_task *task)
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2016-07-27 16:32:00 +00:00
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{
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if (!task) {
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return;
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}
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task->ref--;
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if (task->ref == 0) {
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struct spdk_bdev_io *bdev_io = task->blockdev_io;
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if (task->parent) {
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2016-09-28 06:49:06 +00:00
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spdk_scsi_task_put(task->parent);
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2016-07-27 16:32:00 +00:00
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task->parent = NULL;
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}
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if (bdev_io) {
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spdk_bdev_free_io(bdev_io);
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}
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2016-11-04 18:45:54 +00:00
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spdk_scsi_task_free_data(task);
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2016-08-18 16:45:50 +00:00
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assert(task->owner_task_ctr != NULL);
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2016-11-04 18:45:54 +00:00
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2016-07-27 16:32:00 +00:00
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if (*(task->owner_task_ctr) > 0) {
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*(task->owner_task_ctr) -= 1;
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} else {
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SPDK_ERRLOG("task counter already 0\n");
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}
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task->free_fn(task);
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}
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}
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void
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spdk_scsi_task_construct(struct spdk_scsi_task *task, uint32_t *owner_task_ctr,
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2017-05-12 23:55:16 +00:00
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void (*free_fn)(struct spdk_scsi_task *task),
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2016-07-27 16:32:00 +00:00
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struct spdk_scsi_task *parent)
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{
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2017-05-12 23:55:16 +00:00
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assert(free_fn != NULL);
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task->free_fn = free_fn;
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2016-07-27 16:32:00 +00:00
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task->ref++;
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2016-08-18 16:45:50 +00:00
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assert(owner_task_ctr != NULL);
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2016-07-27 16:32:00 +00:00
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task->owner_task_ctr = owner_task_ctr;
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*owner_task_ctr += 1;
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2016-10-04 15:10:35 +00:00
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/*
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* Pre-fill the iov_buffers to point to the embedded iov
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*/
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2016-11-04 18:45:54 +00:00
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assert(task->iov.iov_base == NULL);
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2016-10-04 15:10:35 +00:00
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task->iovs = &task->iov;
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task->iovcnt = 1;
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2016-07-27 16:32:00 +00:00
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if (parent != NULL) {
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parent->ref++;
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task->parent = parent;
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task->type = parent->type;
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task->dxfer_dir = parent->dxfer_dir;
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task->transfer_len = parent->transfer_len;
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task->lun = parent->lun;
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task->cdb = parent->cdb;
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task->target_port = parent->target_port;
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task->initiator_port = parent->initiator_port;
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}
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}
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void
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2016-11-04 18:45:54 +00:00
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spdk_scsi_task_free_data(struct spdk_scsi_task *task)
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{
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if (task->alloc_len != 0) {
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spdk_free(task->iov.iov_base);
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task->alloc_len = 0;
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}
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task->iov.iov_base = NULL;
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task->iov.iov_len = 0;
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}
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void *
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spdk_scsi_task_alloc_data(struct spdk_scsi_task *task, uint32_t alloc_len)
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2016-07-27 16:32:00 +00:00
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{
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2016-11-04 18:45:54 +00:00
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assert(task->alloc_len == 0);
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2016-11-14 19:14:12 +00:00
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task->iov.iov_base = spdk_zmalloc(alloc_len, 0, NULL);
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task->iov.iov_len = alloc_len;
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task->alloc_len = alloc_len;
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return task->iov.iov_base;
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}
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int
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spdk_scsi_task_scatter_data(struct spdk_scsi_task *task, const void *src, size_t buf_len)
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{
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size_t len = 0;
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size_t buf_left = buf_len;
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int i;
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struct iovec *iovs = task->iovs;
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const uint8_t *pos;
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if (buf_len == 0)
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return 0;
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if (task->iovcnt == 1 && iovs[0].iov_base == NULL) {
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spdk_scsi_task_alloc_data(task, buf_len);
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iovs[0] = task->iov;
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}
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for (i = 0; i < task->iovcnt; i++) {
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assert(iovs[i].iov_base != NULL);
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len += iovs[i].iov_len;
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}
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if (len < buf_len) {
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spdk_scsi_task_set_status(task, SPDK_SCSI_STATUS_CHECK_CONDITION,
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SPDK_SCSI_SENSE_ILLEGAL_REQUEST,
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SPDK_SCSI_ASC_INVALID_FIELD_IN_CDB,
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SPDK_SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
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return -1;
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}
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pos = src;
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for (i = 0; i < task->iovcnt; i++) {
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2017-05-01 20:42:29 +00:00
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len = spdk_min(iovs[i].iov_len, buf_left);
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2016-11-14 19:14:12 +00:00
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buf_left -= len;
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memcpy(iovs[i].iov_base, pos, len);
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pos += len;
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}
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return buf_len;
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}
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void *
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spdk_scsi_task_gather_data(struct spdk_scsi_task *task, int *len)
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{
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int i;
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struct iovec *iovs = task->iovs;
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size_t buf_len = 0;
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uint8_t *buf, *pos;
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for (i = 0; i < task->iovcnt; i++) {
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assert(iovs[i].iov_base != NULL);
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buf_len += iovs[i].iov_len;
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}
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if (buf_len == 0) {
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*len = 0;
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2016-11-04 18:45:54 +00:00
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return NULL;
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}
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2016-11-14 19:14:12 +00:00
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buf = spdk_malloc(buf_len, 0, NULL);
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if (buf == NULL) {
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*len = -1;
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return NULL;
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2016-07-27 16:32:00 +00:00
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}
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2016-11-04 18:45:54 +00:00
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2016-11-14 19:14:12 +00:00
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pos = buf;
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for (i = 0; i < task->iovcnt; i++) {
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memcpy(pos, iovs[i].iov_base, iovs[i].iov_len);
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pos += iovs[i].iov_len;
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}
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2016-11-04 18:45:54 +00:00
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2016-11-14 19:14:12 +00:00
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*len = buf_len;
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return buf;
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2016-11-04 18:45:54 +00:00
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}
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void
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spdk_scsi_task_set_data(struct spdk_scsi_task *task, void *data, uint32_t len)
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{
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assert(task->iovcnt == 1);
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assert(task->alloc_len == 0);
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task->iovs[0].iov_base = data;
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task->iovs[0].iov_len = len;
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2016-07-27 16:32:00 +00:00
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}
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2016-10-09 07:03:43 +00:00
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void
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2016-07-27 16:32:00 +00:00
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spdk_scsi_task_build_sense_data(struct spdk_scsi_task *task, int sk, int asc, int ascq)
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{
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uint8_t *cp;
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int resp_code;
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resp_code = 0x70; /* Current + Fixed format */
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/* Sense Data */
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2016-10-31 17:39:59 +00:00
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cp = task->sense_data;
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2016-07-27 16:32:00 +00:00
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/* VALID(7) RESPONSE CODE(6-0) */
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cp[0] = 0x80 | resp_code;
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/* Obsolete */
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cp[1] = 0;
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/* FILEMARK(7) EOM(6) ILI(5) SENSE KEY(3-0) */
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cp[2] = sk & 0xf;
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/* INFORMATION */
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memset(&cp[3], 0, 4);
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2016-10-09 07:03:43 +00:00
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2016-07-27 16:32:00 +00:00
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/* ADDITIONAL SENSE LENGTH */
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2016-10-09 07:03:43 +00:00
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cp[7] = 10;
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2016-07-27 16:32:00 +00:00
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/* COMMAND-SPECIFIC INFORMATION */
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memset(&cp[8], 0, 4);
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/* ADDITIONAL SENSE CODE */
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cp[12] = asc;
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/* ADDITIONAL SENSE CODE QUALIFIER */
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cp[13] = ascq;
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/* FIELD REPLACEABLE UNIT CODE */
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cp[14] = 0;
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/* SKSV(7) SENSE KEY SPECIFIC(6-0,7-0,7-0) */
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cp[15] = 0;
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cp[16] = 0;
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cp[17] = 0;
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/* SenseLength */
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2016-10-31 17:39:59 +00:00
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task->sense_data_len = 18;
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2016-07-27 16:32:00 +00:00
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}
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void
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2016-10-28 19:56:36 +00:00
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spdk_scsi_task_set_status(struct spdk_scsi_task *task, int sc, int sk,
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int asc, int ascq)
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2016-07-27 16:32:00 +00:00
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{
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2017-01-18 21:52:50 +00:00
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if (sc == SPDK_SCSI_STATUS_CHECK_CONDITION) {
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spdk_scsi_task_build_sense_data(task, sk, asc, ascq);
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}
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2016-10-28 19:56:36 +00:00
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task->status = sc;
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2016-07-27 16:32:00 +00:00
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}
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