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unlock.c
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unlock.c
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/*-
* Copyright (c) 2017 Yandex LLC
* Copyright (c) 2017 Andrey V. Elsukov <[email protected]>
* All rights reserved.
*
* 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 ``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 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/ioctl.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/stdint.h>
#include <net/if.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <stdio.h>
#include <string.h>
#include <err.h>
#include <errno.h>
#define I40E_NVM_ACCESS \
(((((((('E' << 4) + '1') << 4) + 'K') << 4) + 'G') << 4) | 5)
#define I40E_NVM_READ 0xB
#define I40E_NVM_WRITE 0xC
#define I40E_NVM_MOD_PNT_MASK 0xFF
#define I40E_NVM_TRANS_SHIFT 8
#define I40E_NVM_TRANS_MASK (0xf << I40E_NVM_TRANS_SHIFT)
#define I40E_NVM_CON 0x0
#define I40E_NVM_SNT 0x1
#define I40E_NVM_LCB 0x2
#define I40E_NVM_SA (I40E_NVM_SNT | I40E_NVM_LCB)
#define I40E_NVM_ERA 0x4
#define I40E_NVM_CSUM 0x8
#define I40E_NVM_EXEC 0xf
#define I40E_NVM_ADAPT_SHIFT 16
#define I40E_NVM_ADAPT_MASK (0xffffULL << I40E_NVM_ADAPT_SHIFT)
#define I40E_NVMUPD_MAX_DATA 4096
#define I40E_SR_EMP_SR_SETTINGS_PTR 0x48
struct i40e_nvm_access {
uint32_t command;
uint32_t config;
uint32_t offset;
uint32_t data_size;
uint8_t data[1];
};
static void
usage(const char *name)
{
printf("Usage: %s [opts] <ifname> [offset nwords]\n", name);
printf(" -h show this message\n");
printf(" -g show NVM content to check validness\n");
printf(" -u unlock the card and modify NVM\n");
printf(" -l list NVM content at specfied offset\n"
" additional arguments are offset and nwords\n");
exit(0);
}
static void
list_info(int argc, char **argv)
{
struct ifdrv req;
struct i40e_nvm_access *nvm;
uint16_t *ptr, offset, nwords;
int i, s;
offset = argc > 1 ? strtol(argv[1], 0, 0): 0;
nwords = argc > 2 ? strtol(argv[2], 0, 0): 0x50;
if (nwords > I40E_NVMUPD_MAX_DATA / sizeof(uint16_t))
errx(1, "nwords should be less or equal to %lu\n",
I40E_NVMUPD_MAX_DATA / sizeof(uint16_t));
nvm = calloc(1, sizeof(*nvm) + nwords * sizeof(uint16_t));
if (nvm == NULL)
err(2, "calloc: ");
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s == -1)
err(3, "socket: ");
memset(&req, 0, sizeof(req));
strlcpy(req.ifd_name, argv[0], sizeof(req.ifd_name));
req.ifd_cmd = I40E_NVM_ACCESS;
req.ifd_len = sizeof(*nvm) + nwords * sizeof(uint16_t);
req.ifd_data = nvm;
nvm->command = I40E_NVM_READ;
nvm->config = I40E_NVM_SA << I40E_NVM_TRANS_SHIFT;
nvm->offset = offset * sizeof(uint16_t);
nvm->data_size = nwords * sizeof(uint16_t);
if (ioctl(s, SIOCGDRVSPEC, &req) == -1)
err(4, "ioctl: ");
ptr = (uint16_t *)nvm->data;
printf("Read %u words of NVM at offset 0x%08x:\n", nwords, offset);
for (i = 0; i < nwords; i++)
printf("%08x %02x 0x%04x\n", offset, i, *ptr++);
close(s);
free(nvm);
}
#define PHY_CAP_SIZE 0x0c
#define PHY_CAP_OFFSET 0x19
static int
show_info(const char *ifname, uint16_t *offp)
{
struct ifdrv req;
struct i40e_nvm_access *nvm;
uint16_t *ptr, offset;
int i, s;
nvm = calloc(1, sizeof(*nvm) + PHY_CAP_SIZE * sizeof(uint16_t));
if (nvm == NULL)
err(1, "calloc: ");
s = socket(AF_INET, SOCK_DGRAM, 0);
if (s == -1)
err(2, "socket: ");
memset(&req, 0, sizeof(req));
strlcpy(req.ifd_name, ifname, sizeof(req.ifd_name));
req.ifd_cmd = I40E_NVM_ACCESS;
req.ifd_len = sizeof(*nvm) + PHY_CAP_SIZE * sizeof(uint16_t);
req.ifd_data = nvm;
/* Read EMP SR settings pointer (6.3.1.69) */
nvm->command = I40E_NVM_READ;
nvm->config = I40E_NVM_SA << I40E_NVM_TRANS_SHIFT;
nvm->offset = I40E_SR_EMP_SR_SETTINGS_PTR * sizeof(uint16_t);
nvm->data_size = sizeof(uint16_t); /* in bytes */
if (ioctl(s, SIOCGDRVSPEC, &req) == -1)
err(3, "ioctl: ");
offset = *(uint16_t *)nvm->data;
if (offp == NULL)
printf("EMP SR: 0x%04x\n", offset);
/* Pointer is in 4k units.*/
if (offset & 0x8000)
errx(1, "EMP SR pointer is in 4k units. This is untested.\n");
/* Read PHY Capability LAN 0 Pointer (6.3.18.21) */
offset += PHY_CAP_OFFSET;
nvm->command = I40E_NVM_READ;
nvm->config = I40E_NVM_SA << I40E_NVM_TRANS_SHIFT;
nvm->offset = offset * sizeof(uint16_t);
nvm->data_size = sizeof(uint16_t);
if (ioctl(s, SIOCGDRVSPEC, &req) == -1)
err(4, "ioctl: ");
offset += *(uint16_t *)nvm->data;
if (offp != NULL) {
*offp = offset;
free(nvm);
return (s);
}
printf("PHY CAP DATA OFFSET: 0x%04x\n", offset);
/* Read PHY Capability data structure 0 (6.3.22) */
nvm->command = I40E_NVM_READ;
nvm->config = I40E_NVM_SA << I40E_NVM_TRANS_SHIFT;
nvm->offset = offset * sizeof(uint16_t);
nvm->data_size = PHY_CAP_SIZE * sizeof(uint16_t);
if (ioctl(s, SIOCGDRVSPEC, &req) == -1)
err(5, "ioctl: ");
printf("PHY Capability data structure 0:\n");
ptr = (uint16_t *)nvm->data;
for (i = 0; i < PHY_CAP_SIZE; i++) {
printf("%08x %02x 0x%04x", offset, i, *ptr++);
switch(i) {
case 0x00:
printf(" (Section Length) should be 0x000b\n");
break;
case 0x08:
printf(" (PHY Capabilities Misc0) <== will be modified\n");
break;
case 0x0a:
printf(" (40 LESM Timer Values) should be 0x0a1e\n");
break;
default:
printf("\n");
};
}
close(s);
free(nvm);
return (0);
}
static void
update_nvm(const char *ifname)
{
struct ifdrv req;
struct i40e_nvm_access *nvm;
uint16_t *ptr, offset, value;
int c, i, s;
s = show_info(ifname, &offset);
if (s <= 0)
errx(1, "show_info failed\n");
nvm = calloc(1, sizeof(*nvm) + sizeof(uint16_t));
if (nvm == NULL)
err(1, "calloc: ");
memset(&req, 0, sizeof(req));
strlcpy(req.ifd_name, ifname, sizeof(req.ifd_name));
req.ifd_cmd = I40E_NVM_ACCESS;
req.ifd_len = sizeof(*nvm) + sizeof(uint16_t);
req.ifd_data = nvm;
for (i = 0, c = 0; i < 4; i++) {
/* Read PHY Capabilities Misc[i] */
nvm->command = I40E_NVM_READ;
nvm->config = I40E_NVM_SA << I40E_NVM_TRANS_SHIFT;
nvm->offset = (offset + i * PHY_CAP_SIZE +
0x08) * sizeof(uint16_t);
nvm->data_size = sizeof(uint16_t); /* in bytes */
if (ioctl(s, SIOCGDRVSPEC, &req) == -1)
err(2, "ioctl: ");
value = *(uint16_t *)nvm->data;
printf("PHY Capabilities LAN %d Misc0: 0x%04x", i, value);
if ((value & (1 << 11)) == 0) {
printf(" skipped\n");
continue;
}
value &= ~(1 << 11);
/* Write updated value */
nvm->command = I40E_NVM_WRITE;
nvm->config = I40E_NVM_SA << I40E_NVM_TRANS_SHIFT;
nvm->offset = (offset + i * PHY_CAP_SIZE +
0x08) * sizeof(uint16_t);
nvm->data_size = sizeof(uint16_t); /* in bytes */
*(uint16_t *)nvm->data = value;
if (ioctl(s, SIOCSDRVSPEC, &req) == -1)
err(3, "ioctl: ");
printf(" -> 0x%04x\n", value);
c++;
sleep(1);
}
if (c != 0) {
/* Update checksum */
nvm->command = I40E_NVM_WRITE;
nvm->config = (I40E_NVM_SA |
I40E_NVM_CSUM) << I40E_NVM_TRANS_SHIFT;
nvm->offset = 0;
nvm->data_size = sizeof(uint16_t);
*(uint16_t *)nvm->data = 0;
if (ioctl(s, SIOCSDRVSPEC, &req) == -1)
err(4, "ioctl: ");
printf("NVM successfully updated\n");
}
close(s);
free(nvm);
}
int
main(int argc, char **argv)
{
const char *name;
int cmd, ch;
name = argv[0];
cmd = 0;
while ((ch = getopt(argc, argv, "uglh:")) != -1) {
switch (ch) {
default:
usage(name);
break;
case 'g':
cmd |= (1 << 0);
break;
case 'l':
cmd |= (1 << 1);
break;
case 'u':
cmd |= (1 << 2);
break;
}
}
argc -= optind;
argv += optind;
if (cmd == 0)
usage(name);
if (argc < 1)
errx(1, "ifname is required\n");
switch (cmd) {
case 1:
show_info(argv[0], NULL);
break;
case 2:
list_info(argc, argv);
break;
case 4:
update_nvm(argv[0]);
default:
errx(2, "all options are mutually exclusive\n");
}
return (0);
}