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#!/usr/bin/env ucode
'use strict';
import { readfile, writefile, realpath, glob, basename, unlink, open, rename } from "fs";
import { is_equal } from "/usr/share/hostap/common.uc";
let nl = require("nl80211");
let board_file = "/etc/board.json";
let prev_board_data = json(readfile(board_file));
let board_data = json(readfile(board_file));
function phy_idx(name) {
return +rtrim(readfile(`/sys/class/ieee80211/${name}/index`));
}
function phy_path(name) {
let devpath = realpath(`/sys/class/ieee80211/${name}/device`);
devpath = replace(devpath, /^\/sys\/devices\//, "");
if (match(devpath, /^platform\/.*\/pci/))
devpath = replace(devpath, /^platform\//, "");
let dev_phys = map(glob(`/sys/class/ieee80211/${name}/device/ieee80211/*`), basename);
sort(dev_phys, (a, b) => phy_idx(a) - phy_idx(b));
let ofs = index(dev_phys, name);
if (ofs > 0)
devpath += `+${ofs}`;
return devpath;
}
function cleanup() {
let wlan = board_data.wlan;
for (let name in wlan)
if (substr(name, 0, 3) == "phy")
delete wlan[name];
else
delete wlan[name].info;
}
function wiphy_get_entry(phy, path) {
board_data.wlan ??= {};
let wlan = board_data.wlan;
for (let name in wlan)
if (wlan[name].path == path)
return wlan[name];
wlan[phy] = {
path: path
};
return wlan[phy];
}
function wiphy_detect() {
let phys = nl.request(nl.const.NL80211_CMD_GET_WIPHY, nl.const.NLM_F_DUMP, { split_wiphy_dump: true });
if (!phys)
return;
for (let phy in phys) {
let name = phy.wiphy_name;
let path = phy_path(name);
let info = {
antenna_rx: phy.wiphy_antenna_avail_rx,
antenna_tx: phy.wiphy_antenna_avail_tx,
bands: {},
};
let bands = info.bands;
for (let band in phy.wiphy_bands) {
if (!band || !band.freqs)
continue;
let freq = band.freqs[0].freq;
let band_info = {};
let band_name;
if (freq > 50000)
band_name = "60G";
else if (freq > 5900)
band_name = "6G";
else if (freq > 4000)
band_name = "5G";
else
band_name = "2G";
bands[band_name] = band_info;
if (band.ht_capa > 0)
band_info.ht = true;
if (band.vht_capa > 0)
band_info.vht = true;
let he_phy_cap = 0;
for (let ift in band.iftype_data) {
if (!ift.he_cap_phy)
continue;
band_info.he = true;
he_phy_cap |= ift.he_cap_phy[0];
/* TODO: EHT */
}
if (band_name != "2G" &&
(he_phy_cap & 0x18) || ((band.vht_capa >> 2) & 0x3))
band_info.max_width = 160;
else if (band_name != "2G" &&
(he_phy_cap & 4) || band.vht_capa > 0)
band_info.max_width = 80;
else if ((band.ht_capa & 0x2) || (he_phy_cap & 0x2))
band_info.max_width = 40;
else
band_info.max_width = 20;
let modes = band_info.modes = [ "NOHT" ];
if (band_info.ht)
push(modes, "HT20");
if (band_info.vht)
push(modes, "VHT20");
if (band_info.he)
push(modes, "HE20");
if (band.ht_capa & 0x2) {
push(modes, "HT40");
if (band_info.vht)
push(modes, "VHT40")
}
if (he_phy_cap & 0x2)
push(modes, "HE40");
if (band_name == "2G")
continue;
if (band_info.vht)
push(modes, "VHT80");
if (he_phy_cap & 4)
push(modes, "HE80");
if ((band.vht_capa >> 2) & 0x3)
push(modes, "VHT160");
if (he_phy_cap & 0x18)
push(modes, "HE160");
}
let entry = wiphy_get_entry(name, path);
entry.info = info;
}
}
cleanup();
wiphy_detect();
if (!is_equal(prev_board_data, board_data)) {
let new_file = board_file + ".new";
unlink(new_file);
let f = open(new_file, "wx");
if (!f)
exit(1);
f.write(sprintf("%.J\n", board_data));
f.close();
rename(new_file, board_file);
}
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