479 lines
13 KiB
C
479 lines
13 KiB
C
/* usb2514 - small utility to set configuration of USB2514 hub chip
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* (C) 2013-2014 by sysmocom - s.f.m.c. GmbH, Author: Harald Welte
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <limits.h>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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/* #include <linux/i2c-dev.h> */
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#include "i2c-dev.h"
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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enum compare_op {
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EQUAL,
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NOT_EQUAL,
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LESS_THAN_OR_EQUAL,
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GREATER_THAN_OR_EQUAL,
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};
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struct usb2514_board {
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const char *name;
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unsigned int i2c_bus;
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uint8_t i2c_addr;
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const char *board_version_file;
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unsigned int board_version;
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enum compare_op board_version_op;
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uint8_t ports_swap;
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const char *reset_gpio_path;
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int reset_low_active;
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};
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struct board_group {
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/* new /sys/firmware/devicetree/base/model */
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const char *device_tree_name;
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/* old pre-device tree kernels, "Hardware :" in /proc/cpuinfo */
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const char *proc_name;
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const struct usb2514_board *boards;
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unsigned int num_boards;
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};
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static const struct usb2514_board odu_boards[] = {
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{
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.name = "sob-odu v1",
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.i2c_bus = 0,
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.i2c_addr = 0x2C,
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.board_version_file = "/sys/devices/platform/sob-odu.0/board_version",
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.board_version = 1,
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.board_version_op = EQUAL,
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.ports_swap = 0x00, /* ports are still swapped in hardware */
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.reset_gpio_path = "/sys/devices/platform/sob-odu.0/gpio_hub_reset/value",
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.reset_low_active = 1,
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}, {
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.name = "sob-odu v2",
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.i2c_bus = 0,
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.i2c_addr = 0x2C,
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.board_version_file = "/sys/devices/platform/sob-odu.0/board_version",
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.board_version = 2,
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.board_version_op = EQUAL,
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.ports_swap = 0x0E, /* swap DN1, DN2, DN3 */
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.reset_gpio_path = "/sys/devices/platform/sob-odu.0/gpio_hub_reset/value",
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.reset_low_active = 0,
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}, {
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.name = "sob-odu v2",
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.i2c_bus = 0,
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.i2c_addr = 0x2C,
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.board_version_file = "/sys/devices/platform/sob-odu.0/board_version",
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.board_version = 0, /* EEPROM Empty ?!? */
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.board_version_op = EQUAL,
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.ports_swap = 0x0E, /* swap DN1, DN2, DN3 */
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.reset_gpio_path = "/sys/devices/platform/sob-odu.0/gpio_hub_reset/value",
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.reset_low_active = 0,
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}, {
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.name = "sob-odu v3+",
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.i2c_bus = 0,
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.i2c_addr = 0x2C,
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.board_version_file = "/sys/devices/platform/sob-odu.0/board_version",
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.board_version = 3,
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.board_version_op = GREATER_THAN_OR_EQUAL,
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.ports_swap = 0x0C, /* swap only DN2 and DN3 */
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.reset_gpio_path = "/sys/devices/platform/sob-odu.0/gpio_hub_reset/value",
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.reset_low_active = 0,
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},
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};
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static const struct usb2514_board owhw_boards[] = {
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{
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.name = "OWHW",
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.i2c_bus = 1,
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.i2c_addr = 0x2C,
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.board_version_op = EQUAL,
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.ports_swap = 0x10, /* swap only DN4 */
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.reset_gpio_path = "/dev/gpio/hub_reset/value",
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.reset_low_active = 0,
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},
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};
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static const struct board_group boards[] = {
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{
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.proc_name = "sob-odu",
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.device_tree_name = "sysmocom ODU",
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.boards = odu_boards,
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.num_boards = ARRAY_SIZE(odu_boards),
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}, {
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.device_tree_name = "GSMK OWHW",
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.boards = owhw_boards,
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.num_boards = ARRAY_SIZE(owhw_boards),
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},
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};
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#define RESET_PATH_OLD "/sys/class/gpio/gpio62/value"
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/* Default configuration as per data sheet */
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static const uint8_t usb2514_default[256] = {
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0x24, 0x04, 0x14, 0x25, 0xB3, 0x0B, 0x9B, 0x20, /* 0x00 */
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0x02, 0x00, 0x00, 0x00, 0x01, 0x32, 0x01, 0x32, /* 0x08 */
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0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x20 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x40 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x48 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x50 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x78 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x98 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa8 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb8 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd8 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe8 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xf0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* 0xf8 */
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};
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/* Default configuration as per data sheet */
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static uint8_t usb2514_odu[256] = {
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0x24, 0x04, 0x14, 0x25, 0xB3, 0x0B, 0x9B, 0x20, /* 0x00 */
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0x02, 0x00, 0x00, 0x00, 0x01, 0x32, 0x01, 0x32, /* 0x08 */
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0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x20 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x28 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x38 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x40 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x48 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x50 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x58 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x60 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x68 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x70 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x78 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x80 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x88 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x90 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x98 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa8 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb8 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xc8 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd8 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xe8 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xf0 */
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#if 1 /* swap modem + AIS ports (1,2,3) */
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0x00, 0x00, 0x0E, 0x00, 0x00, 0x00, 0x00, 0x01, /* 0xf8 */
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#else
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* 0xf8 */
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#endif
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};
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static int g_fd;
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static unsigned long get_support(void)
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{
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int rc;
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unsigned long funcs = 0;
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rc = ioctl(g_fd, I2C_FUNCS, funcs);
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printf("supported functions: 0x%lx\n", funcs);
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return funcs;
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}
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static int write_regs(const uint8_t *regs)
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{
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unsigned int i;
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int rc;
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for (i = 0; i < 256; i+= 32) {
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printf("Writing block of %u bytes at index %u\n", 32, i);
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rc = i2c_smbus_write_block_data(g_fd, i, 32, regs+i);
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if (rc < 0)
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fprintf(stderr, "Error writing registers at "
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"offset %u: %d\n", i, rc);
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}
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return rc;
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}
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/* attempt to obtain the board version from sysfs */
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static int get_board_version(const char *ver_file)
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{
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FILE *f;
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unsigned int ver;
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f = fopen(ver_file, "r");
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if (!f)
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return -1;
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if (fscanf(f, "%u", &ver) != 1) {
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fclose(f);
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return -2;
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}
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fclose(f);
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return ver;
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}
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static int board_ver_matches(const struct usb2514_board *board,
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unsigned int version)
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{
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switch (board->board_version_op) {
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case EQUAL:
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return (version == board->board_version);
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case NOT_EQUAL:
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return (version != board->board_version);
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case LESS_THAN_OR_EQUAL:
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return (version <= board->board_version);
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case GREATER_THAN_OR_EQUAL:
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return (version >= board->board_version);
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default:
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return 0;
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}
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}
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static char *get_proc_name(void)
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{
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FILE *f = fopen("/proc/cpuinfo", "r");
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char linebuf[256];
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while (fgets(linebuf, sizeof(linebuf), f)) {
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/* strip LF at the end of line */
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char *lf = strrchr(linebuf, '\n');
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if (lf)
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*lf = '\0';
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if (strncmp(linebuf, "Hardware", 8) &&
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strncmp(linebuf, "machine", 7))
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continue;
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/* search for the colon */
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char *colon = strchr(linebuf, ':');
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if (!colon)
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continue;
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colon++;
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/* strip any leading whitespace */
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while (*colon == ' ' || *colon == '\t')
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colon++;
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fclose(f);
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return strdup(colon);
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}
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fclose(f);
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return NULL;
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}
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static char *get_dt_name(void)
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{
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FILE *f;
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char *name = NULL;
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char linebuf[256];
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f = fopen("/sys/firmware/devicetree/base/model", "r");
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if (!f)
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return NULL;
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if (!fgets(linebuf, sizeof(linebuf), f)) {
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fclose(f);
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return NULL;
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}
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fclose(f);
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return strdup(linebuf);
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}
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static const struct board_group *find_matching_board_group()
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{
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int i;
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char *proc_name, *dt_name;
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proc_name = get_proc_name();
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dt_name = get_dt_name();
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for (i = 0; i < ARRAY_SIZE(boards); i++) {
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const struct board_group *bgrp = &boards[i];
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if (dt_name && bgrp->device_tree_name &&
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!strcmp(dt_name, bgrp->device_tree_name)) {
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free(proc_name);
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free(dt_name);
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return bgrp;
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}
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if (proc_name && bgrp->proc_name &&
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!strcmp(proc_name, bgrp->proc_name)) {
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free(proc_name);
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free(dt_name);
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return bgrp;
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}
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}
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free(proc_name);
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free(dt_name);
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return NULL;
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}
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static const struct usb2514_board *
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find_matching_board(const struct board_group *bgrp)
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{
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int i;
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for (i = 0; i < bgrp->num_boards; i++) {
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const struct usb2514_board *board = &bgrp->boards[i];
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int ver;
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if (board->board_version_file) {
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/* get board version and compare */
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ver = get_board_version(board->board_version_file);
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if (ver < 0)
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continue;
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if (!board_ver_matches(board, ver))
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continue;
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}
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return board;
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}
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return NULL;
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}
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/* attempt to reset the hub via sysfs */
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static int reset_hub(const char *reset_path, int invert_logic)
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{
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FILE *f;
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f = fopen(reset_path, "w");
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if (!f)
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return -1;
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if (invert_logic)
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fputs("0", f);
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else
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fputs("1", f);
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usleep(10000);
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rewind(f);
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if (invert_logic)
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fputs("1", f);
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else
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fputs("0", f);
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fclose(f);
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return 0;
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}
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int main(int argc, char **argv)
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{
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int rc;
|
|
char filename[PATH_MAX];
|
|
const struct board_group *bgrp;
|
|
const struct usb2514_board *board;
|
|
|
|
bgrp = find_matching_board_group();
|
|
if (!bgrp) {
|
|
fprintf(stderr, "Cannot find matching board group for this system\n");
|
|
exit(1);
|
|
}
|
|
printf("Found matching board group %s(%s)\n", bgrp->proc_name, bgrp->device_tree_name);
|
|
|
|
board = find_matching_board(bgrp);
|
|
if (!board) {
|
|
fprintf(stderr, "Cannot find matching config for this system\n");
|
|
exit(1);
|
|
}
|
|
printf("Found matching board %s\n", board->name);
|
|
|
|
/* open the I2C bus device */
|
|
|
|
snprintf(filename, sizeof(filename)-1, "/dev/i2c-%d", board->i2c_bus);
|
|
rc = open(filename, O_RDWR);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "Error opening the device %s: %d\n", filename, rc);
|
|
exit(1);
|
|
}
|
|
g_fd = rc;
|
|
get_support();
|
|
|
|
/* set the slave address */
|
|
|
|
rc = ioctl(g_fd, I2C_SLAVE, board->i2c_addr);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "Error setting slave addr: %d\n", rc);
|
|
exit(1);
|
|
}
|
|
|
|
if (board->reset_gpio_path) {
|
|
/* First reset the USB hub before loading data into it */
|
|
if (reset_hub(board->reset_gpio_path, board->reset_low_active) < 0) {
|
|
fprintf(stderr, "Couldn't reset the USB hub!\n");
|
|
}
|
|
} else
|
|
fprintf(stderr, "board config doesn't indicate USB hub reset GPIO\n");
|
|
|
|
/* patch the port inversion byte into the array */
|
|
usb2514_odu[0xFA] = board->ports_swap;
|
|
|
|
rc = write_regs(usb2514_odu);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "Error writing default regs: %d\n", rc);
|
|
exit(1);
|
|
}
|
|
|
|
exit(0);
|
|
}
|