/*
* AMD LED control
* Copyright (C) 2019, Advanced Micro Devices, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libgen.h>
#include <inttypes.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/sysinfo.h>
#include <sys/file.h>
#if _HAVE_DMALLOC_H
#include <dmalloc.h>
#endif
#include "config.h"
#include "ibpi.h"
#include "list.h"
#include "utils.h"
#include "amd.h"
#include "amd_sgpio.h"
#include "amd_ipmi.h"
enum amd_led_interfaces amd_interface = AMD_INTF_UNSET;
enum amd_platforms amd_platform = AMD_PLATFORM_UNSET;
int _find_file_path(const char *start_path, const char *filename,
char *path, size_t path_len)
{
int rc, found;
struct stat sbuf;
struct list dir;
char *dir_name;
const char *dir_path;
rc = scan_dir(start_path, &dir);
if (rc) {
log_info("Failed to scan %s", start_path);
return 0;
}
found = 0;
list_for_each(&dir, dir_path) {
dir_name = strrchr(dir_path, '/');
if (!dir_name)
continue;
/* skip past the leading '/' */
dir_name++;
if (strncmp(dir_name, filename, strlen(filename)) == 0) {
char tmp[PATH_MAX + 1];
strncpy(tmp, dir_path, path_len);
snprintf(path, path_len, "%s", dirname(tmp));
found = 1;
break;
}
if (lstat(dir_path, &sbuf) == -1)
continue;
if (S_ISDIR(sbuf.st_mode)) {
found = _find_file_path(dir_path, filename,
path, path_len);
if (found)
break;
}
}
list_erase(&dir);
return found;
}
static void _get_amd_led_interface(void)
{
char *name;
name = get_text("/sys/class/dmi/id", "product_name");
if (!name)
return;
if (!strncmp(name, "ETHANOL_X", 9)) {
amd_interface = AMD_INTF_IPMI;
amd_platform = AMD_PLATFORM_ETHANOL_X;
} else if (!strncmp(name, "DAYTONA_X", 9)) {
amd_interface = AMD_INTF_IPMI;
amd_platform = AMD_PLATFORM_DAYTONA_X;
} else if (!strncmp(name, "GRANDSTAND", 10)) {
amd_interface = AMD_INTF_SGPIO;
amd_platform = AMD_PLATFORM_GRANDSTAND;
} else if (!strncmp(name, "Speedway", 8)) {
amd_interface = AMD_INTF_SGPIO;
amd_platform = AMD_PLATFORM_SPEEDWAY;
}
free(name);
}
int amd_em_enabled(const char *path)
{
int rc;
_get_amd_led_interface();
switch (amd_interface) {
case AMD_INTF_SGPIO:
rc = _amd_sgpio_em_enabled(path);
break;
case AMD_INTF_IPMI:
rc = _amd_ipmi_em_enabled(path);
break;
default:
log_error("Unsupported AMD interface\n");
rc = -EOPNOTSUPP;
break;
}
return rc;
}
int amd_write(struct block_device *device, enum ibpi_pattern ibpi)
{
int rc;
/* write only if state has changed */
if (ibpi == device->ibpi_prev)
return 1;
switch (amd_interface) {
case AMD_INTF_SGPIO:
rc = _amd_sgpio_write(device, ibpi);
break;
case AMD_INTF_IPMI:
rc = _amd_ipmi_write(device, ibpi);
break;
case AMD_INTF_UNSET:
default:
log_error("Unsupported AMD interface\n");
rc = -EOPNOTSUPP;
break;
}
return rc;
}
char *amd_get_path(const char *cntrl_path, const char *sysfs_path)
{
char *path;
switch (amd_interface) {
case AMD_INTF_SGPIO:
path = _amd_sgpio_get_path(sysfs_path);
break;
case AMD_INTF_IPMI:
path = _amd_ipmi_get_path(cntrl_path, sysfs_path);
break;
case AMD_INTF_UNSET:
default:
log_error("Unsupported AMD interface\n");
path = NULL;
break;
}
return path;
}