60c38d4022
This is far simpler, although it does limit the bdev layer to unmapped just one range per command. In practice, all of our code reports limits of just one range per command anyway. Change-Id: I99247ab349fe85b9925769e965833b06708d0d70 Signed-off-by: Ben Walker <benjamin.walker@intel.com> Reviewed-on: https://review.gerrithub.io/370382 Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com> Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
130 lines
4.3 KiB
C
130 lines
4.3 KiB
C
/*-
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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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#include "spdk/conf.h"
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#define DEFAULT_MAX_UNMAP_LBA_COUNT 4194304
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#define DEFAULT_OPTIMAL_UNMAP_GRANULARITY 0
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#define DEFAULT_UNMAP_GRANULARITY_ALIGNMENT 0
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#define DEFAULT_UGAVALID 0
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#define DEFAULT_MAX_WRITE_SAME_LENGTH 512
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struct spdk_scsi_globals g_spdk_scsi;
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static void
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spdk_set_default_scsi_parameters(void)
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{
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g_spdk_scsi.scsi_params.max_unmap_lba_count = DEFAULT_MAX_UNMAP_LBA_COUNT;
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g_spdk_scsi.scsi_params.optimal_unmap_granularity =
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DEFAULT_OPTIMAL_UNMAP_GRANULARITY;
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g_spdk_scsi.scsi_params.unmap_granularity_alignment =
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DEFAULT_UNMAP_GRANULARITY_ALIGNMENT;
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g_spdk_scsi.scsi_params.ugavalid = DEFAULT_UGAVALID;
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g_spdk_scsi.scsi_params.max_write_same_length = DEFAULT_MAX_WRITE_SAME_LENGTH;
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}
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static int
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spdk_read_config_scsi_parameters(void)
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{
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struct spdk_conf_section *sp;
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const char *val;
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sp = spdk_conf_find_section(NULL, "Scsi");
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if (sp == NULL) {
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spdk_set_default_scsi_parameters();
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return 0;
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}
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val = spdk_conf_section_get_val(sp, "MaxUnmapLbaCount");
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g_spdk_scsi.scsi_params.max_unmap_lba_count = (val == NULL) ?
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DEFAULT_MAX_UNMAP_LBA_COUNT : strtoul(val, NULL, 10);
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val = spdk_conf_section_get_val(sp, "OptimalUnmapGranularity");
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g_spdk_scsi.scsi_params.optimal_unmap_granularity = (val == NULL) ?
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DEFAULT_OPTIMAL_UNMAP_GRANULARITY : strtoul(val, NULL, 10);
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val = spdk_conf_section_get_val(sp, "UnmapGranularityAlignment");
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g_spdk_scsi.scsi_params.unmap_granularity_alignment = (val == NULL) ?
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DEFAULT_UNMAP_GRANULARITY_ALIGNMENT : strtoul(val, NULL, 10);
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g_spdk_scsi.scsi_params.ugavalid = spdk_conf_section_get_boolval(sp, "Ugavalid", DEFAULT_UGAVALID);
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val = spdk_conf_section_get_val(sp, "MaxWriteSameLength");
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g_spdk_scsi.scsi_params.max_write_same_length = (val == NULL) ?
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DEFAULT_MAX_WRITE_SAME_LENGTH : strtoul(val, NULL, 10);
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return 0;
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}
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int
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spdk_scsi_init(void)
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{
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int rc;
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rc = pthread_mutex_init(&g_spdk_scsi.mutex, NULL);
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if (rc != 0) {
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SPDK_ERRLOG("mutex_init() failed\n");
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return -1;
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}
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rc = spdk_read_config_scsi_parameters();
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if (rc < 0) {
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SPDK_ERRLOG("spdk_scsi_parameters() failed\n");
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return -1;
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}
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return 0;
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}
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int
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spdk_scsi_fini(void)
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{
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pthread_mutex_destroy(&g_spdk_scsi.mutex);
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return 0;
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}
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SPDK_TRACE_REGISTER_FN(scsi_trace)
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{
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spdk_trace_register_owner(OWNER_SCSI_DEV, 'd');
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spdk_trace_register_object(OBJECT_SCSI_TASK, 't');
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spdk_trace_register_description("SCSI TASK DONE", "", TRACE_SCSI_TASK_DONE,
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OWNER_SCSI_DEV, OBJECT_SCSI_TASK, 0, 0, 0, "");
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spdk_trace_register_description("SCSI TASK START", "", TRACE_SCSI_TASK_START,
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OWNER_SCSI_DEV, OBJECT_SCSI_TASK, 0, 0, 0, "");
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}
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SPDK_LOG_REGISTER_TRACE_FLAG("scsi", SPDK_TRACE_SCSI)
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