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Makefile
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Makefile.depend
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comnd.c
(7.71 KB)
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comnd.h
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devlist.c
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firmware.c
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format.c
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identify.c
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identify_ext.c
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logpage.c
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modules
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nc_util.c
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ns.c
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nsid.c
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nvmecontrol.8
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nvmecontrol.c
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nvmecontrol.h
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nvmecontrol_ext.h
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passthru.c
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perftest.c
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power.c
(5.62 KB)
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reset.c
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resv.c
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sanitize.c
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selftest.c
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tests
Editing: power.c
/*- * Copyright (c) 2016 Netflix, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/ioccom.h> #include <ctype.h> #include <err.h> #include <fcntl.h> #include <stdbool.h> #include <stddef.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sysexits.h> #include <unistd.h> #include "nvmecontrol.h" _Static_assert(sizeof(struct nvme_power_state) == 256 / NBBY, "nvme_power_state size wrong"); #define POWER_NONE 0xffffffffu static struct options { bool list; uint32_t power; uint32_t workload; const char *dev; } opt = { .list = false, .power = POWER_NONE, .workload = 0, .dev = NULL, }; static void power_list_one(int i, struct nvme_power_state *nps) { int mpower, apower, ipower; uint8_t mps, nops, aps, apw; mps = (nps->mps_nops >> NVME_PWR_ST_MPS_SHIFT) & NVME_PWR_ST_MPS_MASK; nops = (nps->mps_nops >> NVME_PWR_ST_NOPS_SHIFT) & NVME_PWR_ST_NOPS_MASK; apw = (nps->apw_aps >> NVME_PWR_ST_APW_SHIFT) & NVME_PWR_ST_APW_MASK; aps = (nps->apw_aps >> NVME_PWR_ST_APS_SHIFT) & NVME_PWR_ST_APS_MASK; mpower = nps->mp; if (mps == 0) mpower *= 100; ipower = nps->idlp; if (nps->ips == 1) ipower *= 100; apower = nps->actp; if (aps == 1) apower *= 100; printf("%2d: %2d.%04dW%c %3d.%03dms %3d.%03dms %2d %2d %2d %2d %2d.%04dW %2d.%04dW %d\n", i, mpower / 10000, mpower % 10000, nops ? '*' : ' ', nps->enlat / 1000, nps->enlat % 1000, nps->exlat / 1000, nps->exlat % 1000, nps->rrt, nps->rrl, nps->rwt, nps->rwl, ipower / 10000, ipower % 10000, apower / 10000, apower % 10000, apw); } static void power_list(struct nvme_controller_data *cdata) { int i; printf("\nPower States Supported: %d\n\n", cdata->npss + 1); printf(" # Max pwr Enter Lat Exit Lat RT RL WT WL Idle Pwr Act Pwr Workloadd\n"); printf("-- -------- --------- --------- -- -- -- -- -------- -------- --\n"); for (i = 0; i <= cdata->npss; i++) power_list_one(i, &cdata->power_state[i]); } static void power_set(int fd, int power_val, int workload, int perm) { struct nvme_pt_command pt; uint32_t p; p = perm ? (1u << 31) : 0; memset(&pt, 0, sizeof(pt)); pt.cmd.opc = NVME_OPC_SET_FEATURES; pt.cmd.cdw10 = htole32(NVME_FEAT_POWER_MANAGEMENT | p); pt.cmd.cdw11 = htole32(power_val | (workload << 5)); if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) err(EX_IOERR, "set feature power mgmt request failed"); if (nvme_completion_is_error(&pt.cpl)) errx(EX_IOERR, "set feature power mgmt request returned error"); } static void power_show(int fd) { struct nvme_pt_command pt; memset(&pt, 0, sizeof(pt)); pt.cmd.opc = NVME_OPC_GET_FEATURES; pt.cmd.cdw10 = htole32(NVME_FEAT_POWER_MANAGEMENT); if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) err(EX_IOERR, "set feature power mgmt request failed"); if (nvme_completion_is_error(&pt.cpl)) errx(EX_IOERR, "set feature power mgmt request returned error"); printf("Current Power Mode is %d\n", pt.cpl.cdw0); } static void power(const struct cmd *f, int argc, char *argv[]) { struct nvme_controller_data cdata; int fd; char *path; uint32_t nsid; if (arg_parse(argc, argv, f)) return; if (opt.list && opt.power != POWER_NONE) { fprintf(stderr, "Can't set power and list power states\n"); arg_help(argc, argv, f); } open_dev(opt.dev, &fd, 1, 1); get_nsid(fd, &path, &nsid); if (nsid != 0) { close(fd); open_dev(path, &fd, 1, 1); } free(path); if (opt.list) { if (read_controller_data(fd, &cdata)) errx(EX_IOERR, "Identify request failed"); power_list(&cdata); goto out; } if (opt.power != POWER_NONE) { power_set(fd, opt.power, opt.workload, 0); goto out; } power_show(fd); out: close(fd); exit(0); } static const struct opts power_opts[] = { #define OPT(l, s, t, opt, addr, desc) { l, s, t, &opt.addr, desc } OPT("list", 'l', arg_none, opt, list, "List the valid power states"), OPT("power", 'p', arg_uint32, opt, power, "Set the power state"), OPT("workload", 'w', arg_uint32, opt, workload, "Set the workload"), { NULL, 0, arg_none, NULL, NULL } }; #undef OPT static const struct args power_args[] = { { arg_string, &opt.dev, "controller-id|namespace-id" }, { arg_none, NULL, NULL }, }; static struct cmd power_cmd = { .name = "power", .fn = power, .descr = "Manage power states for the drive", .ctx_size = sizeof(opt), .opts = power_opts, .args = power_args, }; CMD_COMMAND(power_cmd);
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