#include <machine/rtems-bsd-user-space.h>
/*-
* 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.
*/
#ifdef __rtems__
#include <machine/rtems-bsd-program.h>
#endif /* __rtems__ */
#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 <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(1, "set feature power mgmt request failed");
if (nvme_completion_is_error(&pt.cpl))
errx(1, "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(1, "set feature power mgmt request failed");
if (nvme_completion_is_error(&pt.cpl))
errx(1, "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;
arg_parse(argc, argv, f);
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);
if (opt.list) {
read_controller_data(fd, &cdata);
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" },
{ 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);
