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(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_write(struct nvme_namespace *ns, void *payload, uint64_t lba, 58 uint32_t lba_count, nvme_cb_fn_t cb_fn, void *cb_arg) 59 { 60 struct nvme_request *req; 61 struct nvme_command *cmd; 62 63 req = nvme_allocate_request(payload, lba_count*512, cb_fn, cb_arg); 64 65 if (req == NULL) 66 return (ENOMEM); 67 68 cmd = &req->cmd; 69 cmd->opc = NVME_OPC_WRITE; 70 cmd->nsid = ns->id; 71 72 /* TODO: create a write command data structure */ 73 *(uint64_t *)&cmd->cdw10 = lba; 74 cmd->cdw12 = lba_count-1; 75 76 nvme_ctrlr_submit_io_request(ns->ctrlr, req); 77 78 return (0); 79 } 80 81 int 82 nvme_ns_cmd_deallocate(struct nvme_namespace *ns, void *payload, 83 uint8_t num_ranges, nvme_cb_fn_t cb_fn, void *cb_arg) 84 { 85 struct nvme_request *req; 86 struct nvme_command *cmd; 87 88 req = nvme_allocate_request(payload, 89 num_ranges * sizeof(struct nvme_dsm_range), cb_fn, cb_arg); 90 91 if (req == NULL) 92 return (ENOMEM); 93 94 cmd = &req->cmd; 95 cmd->opc = NVME_OPC_DATASET_MANAGEMENT; 96 cmd->nsid = ns->id; 97 98 /* TODO: create a delete command data structure */ 99 cmd->cdw10 = num_ranges; 100 cmd->cdw11 = NVME_DSM_ATTR_DEALLOCATE; 101 102 nvme_ctrlr_submit_io_request(ns->ctrlr, req); 103 104 return (0); 105 } 106 107 int 108 nvme_ns_cmd_flush(struct nvme_namespace *ns, nvme_cb_fn_t cb_fn, void *cb_arg) 109 { 110 struct nvme_request *req; 111 struct nvme_command *cmd; 112 113 req = nvme_allocate_request(NULL, 0, cb_fn, cb_arg); 114 115 if (req == NULL) 116 return (ENOMEM); 117 118 cmd = &req->cmd; 119 cmd->opc = NVME_OPC_FLUSH; 120 cmd->nsid = ns->id; 121 122 nvme_ctrlr_submit_io_request(ns->ctrlr, req); 123 124 return (0); 125 } 126