1 /*- 2 * Copyright (C) 2012 Intel Corporation 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "nvme_private.h" 31 32 int 33 nvme_ns_cmd_read(struct nvme_namespace *ns, void *payload, uint64_t lba, 34 uint32_t lba_count, nvme_cb_fn_t cb_fn, void *cb_arg) 35 { 36 struct nvme_request *req; 37 struct nvme_command *cmd; 38 39 req = nvme_allocate_request_vaddr(payload, lba_count*512, cb_fn, cb_arg); 40 41 if (req == NULL) 42 return (ENOMEM); 43 cmd = &req->cmd; 44 cmd->opc = NVME_OPC_READ; 45 cmd->nsid = ns->id; 46 47 /* TODO: create a read command data structure */ 48 *(uint64_t *)&cmd->cdw10 = lba; 49 cmd->cdw12 = lba_count-1; 50 51 nvme_ctrlr_submit_io_request(ns->ctrlr, req); 52 53 return (0); 54 } 55 56 int 57 nvme_ns_cmd_read_bio(struct nvme_namespace *ns, struct bio *bp, 58 nvme_cb_fn_t cb_fn, void *cb_arg) 59 { 60 struct nvme_request *req; 61 struct nvme_command *cmd; 62 uint64_t lba; 63 uint64_t lba_count; 64 65 req = nvme_allocate_request_bio(bp, cb_fn, cb_arg); 66 67 if (req == NULL) 68 return (ENOMEM); 69 cmd = &req->cmd; 70 cmd->opc = NVME_OPC_READ; 71 cmd->nsid = ns->id; 72 73 lba = bp->bio_offset / nvme_ns_get_sector_size(ns); 74 lba_count = bp->bio_bcount / nvme_ns_get_sector_size(ns); 75 76 /* TODO: create a read command data structure */ 77 *(uint64_t *)&cmd->cdw10 = lba; 78 cmd->cdw12 = lba_count-1; 79 80 nvme_ctrlr_submit_io_request(ns->ctrlr, req); 81 82 return (0); 83 } 84 85 int 86 nvme_ns_cmd_write(struct nvme_namespace *ns, void *payload, uint64_t lba, 87 uint32_t lba_count, nvme_cb_fn_t cb_fn, void *cb_arg) 88 { 89 struct nvme_request *req; 90 struct nvme_command *cmd; 91 92 req = nvme_allocate_request_vaddr(payload, lba_count*512, cb_fn, 93 cb_arg); 94 95 if (req == NULL) 96 return (ENOMEM); 97 98 cmd = &req->cmd; 99 cmd->opc = NVME_OPC_WRITE; 100 cmd->nsid = ns->id; 101 102 /* TODO: create a write command data structure */ 103 *(uint64_t *)&cmd->cdw10 = lba; 104 cmd->cdw12 = lba_count-1; 105 106 nvme_ctrlr_submit_io_request(ns->ctrlr, req); 107 108 return (0); 109 } 110 111 int 112 nvme_ns_cmd_write_bio(struct nvme_namespace *ns, struct bio *bp, 113 nvme_cb_fn_t cb_fn, void *cb_arg) 114 { 115 struct nvme_request *req; 116 struct nvme_command *cmd; 117 uint64_t lba; 118 uint64_t lba_count; 119 120 req = nvme_allocate_request_bio(bp, cb_fn, cb_arg); 121 122 if (req == NULL) 123 return (ENOMEM); 124 cmd = &req->cmd; 125 cmd->opc = NVME_OPC_WRITE; 126 cmd->nsid = ns->id; 127 128 lba = bp->bio_offset / nvme_ns_get_sector_size(ns); 129 lba_count = bp->bio_bcount / nvme_ns_get_sector_size(ns); 130 131 /* TODO: create a write command data structure */ 132 *(uint64_t *)&cmd->cdw10 = lba; 133 cmd->cdw12 = lba_count-1; 134 135 nvme_ctrlr_submit_io_request(ns->ctrlr, req); 136 137 return (0); 138 } 139 140 int 141 nvme_ns_cmd_deallocate(struct nvme_namespace *ns, void *payload, 142 uint8_t num_ranges, nvme_cb_fn_t cb_fn, void *cb_arg) 143 { 144 struct nvme_request *req; 145 struct nvme_command *cmd; 146 147 req = nvme_allocate_request_vaddr(payload, 148 num_ranges * sizeof(struct nvme_dsm_range), cb_fn, cb_arg); 149 150 if (req == NULL) 151 return (ENOMEM); 152 153 cmd = &req->cmd; 154 cmd->opc = NVME_OPC_DATASET_MANAGEMENT; 155 cmd->nsid = ns->id; 156 157 /* TODO: create a delete command data structure */ 158 cmd->cdw10 = num_ranges - 1; 159 cmd->cdw11 = NVME_DSM_ATTR_DEALLOCATE; 160 161 nvme_ctrlr_submit_io_request(ns->ctrlr, req); 162 163 return (0); 164 } 165 166 int 167 nvme_ns_cmd_flush(struct nvme_namespace *ns, nvme_cb_fn_t cb_fn, void *cb_arg) 168 { 169 struct nvme_request *req; 170 struct nvme_command *cmd; 171 172 req = nvme_allocate_request_null(cb_fn, cb_arg); 173 174 if (req == NULL) 175 return (ENOMEM); 176 177 cmd = &req->cmd; 178 cmd->opc = NVME_OPC_FLUSH; 179 cmd->nsid = ns->id; 180 181 nvme_ctrlr_submit_io_request(ns->ctrlr, req); 182 183 return (0); 184 } 185