2 * Copyright (C) 2012 Intel Corporation
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
32 #include <sys/sysctl.h>
34 #include "nvme_private.h"
37 * CTLTYPE_S64 and sysctl_handle_64 were added in r217616. Define these
38 * explicitly here for older kernels that don't include the r217616
42 #define CTLTYPE_S64 CTLTYPE_QUAD
43 #define sysctl_handle_64 sysctl_handle_quad
47 nvme_dump_queue(struct nvme_qpair *qpair)
49 struct nvme_completion *cpl;
50 struct nvme_command *cmd;
53 printf("id:%04Xh phase:%d\n", qpair->id, qpair->phase);
55 printf("Completion queue:\n");
56 for (i = 0; i < qpair->num_entries; i++) {
59 nvme_dump_completion(cpl);
62 printf("Submission queue:\n");
63 for (i = 0; i < qpair->num_entries; i++) {
66 nvme_dump_command(cmd);
72 nvme_sysctl_dump_debug(SYSCTL_HANDLER_ARGS)
74 struct nvme_qpair *qpair = arg1;
77 int error = sysctl_handle_int(oidp, &val, 0, req);
83 nvme_dump_queue(qpair);
89 nvme_sysctl_int_coal_time(SYSCTL_HANDLER_ARGS)
91 struct nvme_controller *ctrlr = arg1;
92 uint32_t oldval = ctrlr->int_coal_time;
93 int error = sysctl_handle_int(oidp, &ctrlr->int_coal_time, 0,
99 if (oldval != ctrlr->int_coal_time)
100 nvme_ctrlr_cmd_set_interrupt_coalescing(ctrlr,
101 ctrlr->int_coal_time, ctrlr->int_coal_threshold, NULL,
108 nvme_sysctl_int_coal_threshold(SYSCTL_HANDLER_ARGS)
110 struct nvme_controller *ctrlr = arg1;
111 uint32_t oldval = ctrlr->int_coal_threshold;
112 int error = sysctl_handle_int(oidp, &ctrlr->int_coal_threshold, 0,
118 if (oldval != ctrlr->int_coal_threshold)
119 nvme_ctrlr_cmd_set_interrupt_coalescing(ctrlr,
120 ctrlr->int_coal_time, ctrlr->int_coal_threshold, NULL,
127 nvme_qpair_reset_stats(struct nvme_qpair *qpair)
131 qpair->num_intr_handler_calls = 0;
135 nvme_sysctl_num_cmds(SYSCTL_HANDLER_ARGS)
137 struct nvme_controller *ctrlr = arg1;
138 int64_t num_cmds = 0;
141 num_cmds = ctrlr->adminq.num_cmds;
143 for (i = 0; i < ctrlr->num_io_queues; i++)
144 num_cmds += ctrlr->ioq[i].num_cmds;
146 return (sysctl_handle_64(oidp, &num_cmds, 0, req));
150 nvme_sysctl_num_intr_handler_calls(SYSCTL_HANDLER_ARGS)
152 struct nvme_controller *ctrlr = arg1;
153 int64_t num_intr_handler_calls = 0;
156 num_intr_handler_calls = ctrlr->adminq.num_intr_handler_calls;
158 for (i = 0; i < ctrlr->num_io_queues; i++)
159 num_intr_handler_calls += ctrlr->ioq[i].num_intr_handler_calls;
161 return (sysctl_handle_64(oidp, &num_intr_handler_calls, 0, req));
165 nvme_sysctl_reset_stats(SYSCTL_HANDLER_ARGS)
167 struct nvme_controller *ctrlr = arg1;
170 int error = sysctl_handle_int(oidp, &val, 0, req);
176 nvme_qpair_reset_stats(&ctrlr->adminq);
178 for (i = 0; i < ctrlr->num_io_queues; i++)
179 nvme_qpair_reset_stats(&ctrlr->ioq[i]);
187 nvme_sysctl_initialize_queue(struct nvme_qpair *qpair,
188 struct sysctl_ctx_list *ctrlr_ctx, struct sysctl_oid *que_tree)
190 struct sysctl_oid_list *que_list = SYSCTL_CHILDREN(que_tree);
192 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "num_entries",
193 CTLFLAG_RD, &qpair->num_entries, 0,
194 "Number of entries in hardware queue");
195 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "num_trackers",
196 CTLFLAG_RD, &qpair->num_trackers, 0,
197 "Number of trackers pre-allocated for this queue pair");
198 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "sq_head",
199 CTLFLAG_RD, &qpair->sq_head, 0,
200 "Current head of submission queue (as observed by driver)");
201 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "sq_tail",
202 CTLFLAG_RD, &qpair->sq_tail, 0,
203 "Current tail of submission queue (as observed by driver)");
204 SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "cq_head",
205 CTLFLAG_RD, &qpair->cq_head, 0,
206 "Current head of completion queue (as observed by driver)");
208 SYSCTL_ADD_QUAD(ctrlr_ctx, que_list, OID_AUTO, "num_cmds",
209 CTLFLAG_RD, &qpair->num_cmds, "Number of commands submitted");
210 SYSCTL_ADD_QUAD(ctrlr_ctx, que_list, OID_AUTO, "num_intr_handler_calls",
211 CTLFLAG_RD, &qpair->num_intr_handler_calls,
212 "Number of times interrupt handler was invoked (will typically be "
213 "less than number of actual interrupts generated due to "
216 SYSCTL_ADD_PROC(ctrlr_ctx, que_list, OID_AUTO,
217 "dump_debug", CTLTYPE_UINT | CTLFLAG_RW, qpair, 0,
218 nvme_sysctl_dump_debug, "IU", "Dump debug data");
222 nvme_sysctl_initialize_ctrlr(struct nvme_controller *ctrlr)
224 struct sysctl_ctx_list *ctrlr_ctx;
225 struct sysctl_oid *ctrlr_tree, *que_tree;
226 struct sysctl_oid_list *ctrlr_list;
227 #define QUEUE_NAME_LENGTH 16
228 char queue_name[QUEUE_NAME_LENGTH];
231 ctrlr_ctx = device_get_sysctl_ctx(ctrlr->dev);
232 ctrlr_tree = device_get_sysctl_tree(ctrlr->dev);
233 ctrlr_list = SYSCTL_CHILDREN(ctrlr_tree);
235 if (ctrlr->is_started) {
236 SYSCTL_ADD_PROC(ctrlr_ctx, ctrlr_list, OID_AUTO,
237 "int_coal_time", CTLTYPE_UINT | CTLFLAG_RW, ctrlr, 0,
238 nvme_sysctl_int_coal_time, "IU",
239 "Interrupt coalescing timeout (in microseconds)");
241 SYSCTL_ADD_PROC(ctrlr_ctx, ctrlr_list, OID_AUTO,
242 "int_coal_threshold", CTLTYPE_UINT | CTLFLAG_RW, ctrlr, 0,
243 nvme_sysctl_int_coal_threshold, "IU",
244 "Interrupt coalescing threshold");
246 SYSCTL_ADD_PROC(ctrlr_ctx, ctrlr_list, OID_AUTO,
247 "num_cmds", CTLTYPE_S64 | CTLFLAG_RD,
248 ctrlr, 0, nvme_sysctl_num_cmds, "IU",
249 "Number of commands submitted");
251 SYSCTL_ADD_PROC(ctrlr_ctx, ctrlr_list, OID_AUTO,
252 "num_intr_handler_calls", CTLTYPE_S64 | CTLFLAG_RD,
253 ctrlr, 0, nvme_sysctl_num_intr_handler_calls, "IU",
254 "Number of times interrupt handler was invoked (will "
255 "typically be less than number of actual interrupts "
256 "generated due to coalescing)");
258 SYSCTL_ADD_PROC(ctrlr_ctx, ctrlr_list, OID_AUTO,
259 "reset_stats", CTLTYPE_UINT | CTLFLAG_RW, ctrlr, 0,
260 nvme_sysctl_reset_stats, "IU", "Reset statistics to zero");
263 que_tree = SYSCTL_ADD_NODE(ctrlr_ctx, ctrlr_list, OID_AUTO, "adminq",
264 CTLFLAG_RD, NULL, "Admin Queue");
266 nvme_sysctl_initialize_queue(&ctrlr->adminq, ctrlr_ctx, que_tree);
268 for (i = 0; i < ctrlr->num_io_queues; i++) {
269 snprintf(queue_name, QUEUE_NAME_LENGTH, "ioq%d", i);
270 que_tree = SYSCTL_ADD_NODE(ctrlr_ctx, ctrlr_list, OID_AUTO,
271 queue_name, CTLFLAG_RD, NULL, "IO Queue");
272 nvme_sysctl_initialize_queue(&ctrlr->ioq[i], ctrlr_ctx,