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 <sys/param.h> 31 #include <sys/bus.h> 32 #include <sys/sysctl.h> 33 34 #include "nvme_private.h" 35 36 static void 37 nvme_dump_queue(struct nvme_qpair *qpair) 38 { 39 struct nvme_completion *cpl; 40 struct nvme_command *cmd; 41 int i; 42 43 printf("id:%04Xh phase:%d\n", qpair->id, qpair->phase); 44 45 printf("Completion queue:\n"); 46 for (i = 0; i < qpair->num_entries; i++) { 47 cpl = &qpair->cpl[i]; 48 printf("%05d: ", i); 49 nvme_dump_completion(cpl); 50 } 51 52 printf("Submission queue:\n"); 53 for (i = 0; i < qpair->num_entries; i++) { 54 cmd = &qpair->cmd[i]; 55 printf("%05d: ", i); 56 nvme_dump_command(cmd); 57 } 58 } 59 60 61 static int 62 nvme_sysctl_dump_debug(SYSCTL_HANDLER_ARGS) 63 { 64 struct nvme_qpair *qpair = arg1; 65 uint32_t val = 0; 66 67 int error = sysctl_handle_int(oidp, &val, 0, req); 68 69 if (error) 70 return (error); 71 72 if (val != 0) 73 nvme_dump_queue(qpair); 74 75 return (0); 76 } 77 78 static int 79 nvme_sysctl_int_coal_time(SYSCTL_HANDLER_ARGS) 80 { 81 struct nvme_controller *ctrlr = arg1; 82 uint32_t oldval = ctrlr->int_coal_time; 83 int error = sysctl_handle_int(oidp, &ctrlr->int_coal_time, 0, 84 req); 85 86 if (error) 87 return (error); 88 89 if (oldval != ctrlr->int_coal_time) 90 nvme_ctrlr_cmd_set_interrupt_coalescing(ctrlr, 91 ctrlr->int_coal_time, ctrlr->int_coal_threshold, NULL, 92 NULL); 93 94 return (0); 95 } 96 97 static int 98 nvme_sysctl_int_coal_threshold(SYSCTL_HANDLER_ARGS) 99 { 100 struct nvme_controller *ctrlr = arg1; 101 uint32_t oldval = ctrlr->int_coal_threshold; 102 int error = sysctl_handle_int(oidp, &ctrlr->int_coal_threshold, 0, 103 req); 104 105 if (error) 106 return (error); 107 108 if (oldval != ctrlr->int_coal_threshold) 109 nvme_ctrlr_cmd_set_interrupt_coalescing(ctrlr, 110 ctrlr->int_coal_time, ctrlr->int_coal_threshold, NULL, 111 NULL); 112 113 return (0); 114 } 115 116 static void 117 nvme_sysctl_initialize_queue(struct nvme_qpair *qpair, 118 struct sysctl_ctx_list *ctrlr_ctx, struct sysctl_oid *que_tree) 119 { 120 struct sysctl_oid_list *que_list = SYSCTL_CHILDREN(que_tree); 121 122 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "num_entries", 123 CTLFLAG_RD, &qpair->num_entries, 0, 124 "Number of entries in hardware queue"); 125 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "num_tr", 126 CTLFLAG_RD, &qpair->num_tr, 0, 127 "Number of trackers allocated"); 128 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "num_prp_list", 129 CTLFLAG_RD, &qpair->num_prp_list, 0, 130 "Number of PRP lists allocated"); 131 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "sq_head", 132 CTLFLAG_RD, &qpair->sq_head, 0, 133 "Current head of submission queue (as observed by driver)"); 134 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "sq_tail", 135 CTLFLAG_RD, &qpair->sq_tail, 0, 136 "Current tail of submission queue (as observed by driver)"); 137 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "cq_head", 138 CTLFLAG_RD, &qpair->cq_head, 0, 139 "Current head of completion queue (as observed by driver)"); 140 141 SYSCTL_ADD_QUAD(ctrlr_ctx, que_list, OID_AUTO, "num_cmds", 142 CTLFLAG_RD, &qpair->num_cmds, "Number of commands submitted"); 143 144 SYSCTL_ADD_PROC(ctrlr_ctx, que_list, OID_AUTO, 145 "dump_debug", CTLTYPE_UINT | CTLFLAG_RW, qpair, 0, 146 nvme_sysctl_dump_debug, "IU", "Dump debug data"); 147 } 148 149 void 150 nvme_sysctl_initialize_ctrlr(struct nvme_controller *ctrlr) 151 { 152 struct sysctl_ctx_list *ctrlr_ctx; 153 struct sysctl_oid *ctrlr_tree, *que_tree; 154 struct sysctl_oid_list *ctrlr_list; 155 #define QUEUE_NAME_LENGTH 16 156 char queue_name[QUEUE_NAME_LENGTH]; 157 int i; 158 159 ctrlr_ctx = device_get_sysctl_ctx(ctrlr->dev); 160 ctrlr_tree = device_get_sysctl_tree(ctrlr->dev); 161 ctrlr_list = SYSCTL_CHILDREN(ctrlr_tree); 162 163 if (ctrlr->is_started) { 164 SYSCTL_ADD_PROC(ctrlr_ctx, ctrlr_list, OID_AUTO, 165 "int_coal_time", CTLTYPE_UINT | CTLFLAG_RW, ctrlr, 0, 166 nvme_sysctl_int_coal_time, "IU", 167 "Interrupt coalescing timeout (in microseconds)"); 168 169 SYSCTL_ADD_PROC(ctrlr_ctx, ctrlr_list, OID_AUTO, 170 "int_coal_threshold", CTLTYPE_UINT | CTLFLAG_RW, ctrlr, 0, 171 nvme_sysctl_int_coal_threshold, "IU", 172 "Interrupt coalescing threshold"); 173 } 174 175 que_tree = SYSCTL_ADD_NODE(ctrlr_ctx, ctrlr_list, OID_AUTO, "adminq", 176 CTLFLAG_RD, NULL, "Admin Queue"); 177 178 nvme_sysctl_initialize_queue(&ctrlr->adminq, ctrlr_ctx, que_tree); 179 180 for (i = 0; i < ctrlr->num_io_queues; i++) { 181 snprintf(queue_name, QUEUE_NAME_LENGTH, "ioq%d", i); 182 que_tree = SYSCTL_ADD_NODE(ctrlr_ctx, ctrlr_list, OID_AUTO, 183 queue_name, CTLFLAG_RD, NULL, "IO Queue"); 184 nvme_sysctl_initialize_queue(&ctrlr->ioq[i], ctrlr_ctx, 185 que_tree); 186 } 187 } 188