mirror of
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4a14f9dadc
signifying that a reboot is required to complete activation of the requested firmware image. Reported by: Joe Golio <joseph.golio@emc.com> Sponsored by: Intel MFC after: 3 days
323 lines
8.6 KiB
C
323 lines
8.6 KiB
C
/*-
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* Copyright (c) 2013 EMC Corp.
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* All rights reserved.
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*
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* Copyright (C) 2012-2013 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/ioccom.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <ctype.h>
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#include <err.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "nvmecontrol.h"
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static int
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slot_has_valid_firmware(int fd, int slot)
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{
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struct nvme_firmware_page fw;
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int has_fw = false;
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read_logpage(fd, NVME_LOG_FIRMWARE_SLOT,
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NVME_GLOBAL_NAMESPACE_TAG, &fw, sizeof(fw));
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if (fw.revision[slot-1] != 0LLU)
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has_fw = true;
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return (has_fw);
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}
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static void
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read_image_file(char *path, void **buf, int32_t *size)
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{
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struct stat sb;
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int32_t filesize;
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int fd;
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*size = 0;
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*buf = NULL;
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if ((fd = open(path, O_RDONLY)) < 0)
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err(1, "unable to open '%s'", path);
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if (fstat(fd, &sb) < 0)
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err(1, "unable to stat '%s'", path);
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/*
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* The NVMe spec does not explicitly state a maximum firmware image
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* size, although one can be inferred from the dword size limitation
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* for the size and offset fields in the Firmware Image Download
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* command.
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*
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* Technically, the max is UINT32_MAX * sizeof(uint32_t), since the
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* size and offsets are specified in terms of dwords (not bytes), but
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* realistically INT32_MAX is sufficient here and simplifies matters
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* a bit.
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*/
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if (sb.st_size > INT32_MAX)
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errx(1, "size of file '%s' is too large (%jd bytes)",
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path, (intmax_t)sb.st_size);
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filesize = (int32_t)sb.st_size;
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if ((*buf = malloc(filesize)) == NULL)
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errx(1, "unable to malloc %d bytes", filesize);
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if ((*size = read(fd, *buf, filesize)) < 0)
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err(1, "error reading '%s'", path);
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/* XXX assuming no short reads */
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if (*size != filesize)
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errx(1,
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"error reading '%s' (read %d bytes, requested %d bytes)",
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path, *size, filesize);
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}
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static void
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update_firmware(int fd, uint8_t *payload, int32_t payload_size)
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{
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struct nvme_pt_command pt;
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int32_t off, resid, size;
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void *chunk;
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off = 0;
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resid = payload_size;
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if ((chunk = malloc(NVME_MAX_XFER_SIZE)) == NULL)
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errx(1, "unable to malloc %d bytes", NVME_MAX_XFER_SIZE);
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while (resid > 0) {
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size = (resid >= NVME_MAX_XFER_SIZE) ?
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NVME_MAX_XFER_SIZE : resid;
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memcpy(chunk, payload + off, size);
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memset(&pt, 0, sizeof(pt));
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pt.cmd.opc = NVME_OPC_FIRMWARE_IMAGE_DOWNLOAD;
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pt.cmd.cdw10 = (size / sizeof(uint32_t)) - 1;
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pt.cmd.cdw11 = (off / sizeof(uint32_t));
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pt.buf = chunk;
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pt.len = size;
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pt.is_read = 0;
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if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0)
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err(1, "firmware download request failed");
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if (nvme_completion_is_error(&pt.cpl))
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errx(1, "firmware download request returned error");
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resid -= size;
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off += size;
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}
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}
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static int
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activate_firmware(int fd, int slot, int activate_action)
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{
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struct nvme_pt_command pt;
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memset(&pt, 0, sizeof(pt));
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pt.cmd.opc = NVME_OPC_FIRMWARE_ACTIVATE;
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pt.cmd.cdw10 = (activate_action << 3) | slot;
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pt.is_read = 0;
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if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0)
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err(1, "firmware activate request failed");
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if (pt.cpl.status.sct == NVME_SCT_COMMAND_SPECIFIC &&
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pt.cpl.status.sc == NVME_SC_FIRMWARE_REQUIRES_RESET)
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return 1;
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if (nvme_completion_is_error(&pt.cpl))
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errx(1, "firmware activate request returned error");
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return 0;
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}
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static void
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firmware_usage(void)
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{
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fprintf(stderr, "usage:\n");
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fprintf(stderr, FIRMWARE_USAGE);
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exit(1);
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}
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void
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firmware(int argc, char *argv[])
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{
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int fd = -1, slot = 0;
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int a_flag, s_flag, f_flag;
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int activate_action, reboot_required;
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char ch, *p, *image = NULL;
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char *controller = NULL, prompt[64];
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void *buf = NULL;
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int32_t size = 0;
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struct nvme_controller_data cdata;
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a_flag = s_flag = f_flag = false;
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while ((ch = getopt(argc, argv, "af:s:")) != -1) {
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switch (ch) {
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case 'a':
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a_flag = true;
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break;
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case 's':
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slot = strtol(optarg, &p, 0);
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if (p != NULL && *p != '\0') {
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fprintf(stderr,
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"\"%s\" not valid slot.\n",
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optarg);
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firmware_usage();
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} else if (slot == 0) {
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fprintf(stderr,
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"0 is not a valid slot number. "
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"Slot numbers start at 1.\n");
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firmware_usage();
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} else if (slot > 7) {
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fprintf(stderr,
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"Slot number %s specified which is "
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"greater than max allowed slot number of "
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"7.\n", optarg);
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firmware_usage();
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}
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s_flag = true;
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break;
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case 'f':
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image = optarg;
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f_flag = true;
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break;
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}
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}
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/* Check that a controller (and not a namespace) was specified. */
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if (optind >= argc || strstr(argv[optind], NVME_NS_PREFIX) != NULL)
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firmware_usage();
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if (!f_flag && !a_flag) {
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fprintf(stderr,
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"Neither a replace ([-f path_to_firmware]) nor "
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"activate ([-a]) firmware image action\n"
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"was specified.\n");
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firmware_usage();
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}
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if (!f_flag && a_flag && slot == 0) {
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fprintf(stderr,
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"Slot number to activate not specified.\n");
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firmware_usage();
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}
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controller = argv[optind];
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open_dev(controller, &fd, 1, 1);
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read_controller_data(fd, &cdata);
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if (cdata.oacs.firmware == 0)
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errx(1,
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"controller does not support firmware activate/download");
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if (f_flag && slot == 1 && cdata.frmw.slot1_ro)
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errx(1, "slot %d is marked as read only", slot);
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if (slot > cdata.frmw.num_slots)
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errx(1,
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"slot %d specified but controller only supports %d slots",
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slot, cdata.frmw.num_slots);
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if (a_flag && !f_flag && !slot_has_valid_firmware(fd, slot))
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errx(1,
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"slot %d does not contain valid firmware,\n"
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"try 'nvmecontrol logpage -p 3 %s' to get a list "
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"of available images\n",
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slot, controller);
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if (f_flag)
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read_image_file(image, &buf, &size);
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if (f_flag && a_flag)
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printf("You are about to download and activate "
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"firmware image (%s) to controller %s.\n"
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"This may damage your controller and/or "
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"overwrite an existing firmware image.\n",
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image, controller);
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else if (a_flag)
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printf("You are about to activate a new firmware "
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"image on controller %s.\n"
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"This may damage your controller.\n",
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controller);
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else if (f_flag)
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printf("You are about to download firmware image "
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"(%s) to controller %s.\n"
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"This may damage your controller and/or "
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"overwrite an existing firmware image.\n",
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image, controller);
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printf("Are you sure you want to continue? (yes/no) ");
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while (1) {
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fgets(prompt, sizeof(prompt), stdin);
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if (strncasecmp(prompt, "yes", 3) == 0)
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break;
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if (strncasecmp(prompt, "no", 2) == 0)
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exit(1);
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printf("Please answer \"yes\" or \"no\". ");
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}
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if (f_flag) {
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update_firmware(fd, buf, size);
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if (a_flag)
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activate_action = NVME_AA_REPLACE_ACTIVATE;
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else
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activate_action = NVME_AA_REPLACE_NO_ACTIVATE;
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} else {
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activate_action = NVME_AA_ACTIVATE;
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}
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reboot_required = activate_firmware(fd, slot, activate_action);
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if (a_flag) {
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if (reboot_required) {
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printf("New firmware image activated but requires "
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"conventional reset (i.e. reboot) to "
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"complete activation.\n");
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} else {
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printf("New firmware image activated and will take "
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"effect after next controller reset.\n"
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"Controller reset can be initiated via "
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"'nvmecontrol reset %s'\n",
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controller);
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}
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}
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close(fd);
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exit(0);
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}
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