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https://github.com/torvalds/linux
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1b023d475a
Due to the way that debugging is used in the mac80211 subsystem this message ends up being noisier than it needs to be. As the statement is only useful at a first stage of triage for BIOS bugs, just drop it. Cc: Jun Ma <Jun.Ma2@amd.com> Suggested-by: Kalle Valo <kvalo@kernel.org> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Tested-by: Kalle Valo <kvalo@kernel.org> Link: https://msgid.link/20240117030525.539-1-mario.limonciello@amd.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Wifi Band Exclusion Interface for WLAN
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* Copyright (C) 2023 Advanced Micro Devices
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*
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*/
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#include <linux/acpi_amd_wbrf.h>
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#include <linux/units.h>
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#include <net/cfg80211.h>
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#include "ieee80211_i.h"
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void ieee80211_check_wbrf_support(struct ieee80211_local *local)
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{
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struct wiphy *wiphy = local->hw.wiphy;
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struct device *dev;
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if (!wiphy)
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return;
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dev = wiphy->dev.parent;
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if (!dev)
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return;
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local->wbrf_supported = acpi_amd_wbrf_supported_producer(dev);
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}
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static void get_chan_freq_boundary(u32 center_freq, u32 bandwidth, u64 *start, u64 *end)
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{
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bandwidth *= KHZ_PER_MHZ;
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center_freq *= KHZ_PER_MHZ;
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*start = center_freq - bandwidth / 2;
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*end = center_freq + bandwidth / 2;
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/* Frequency in Hz is expected */
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*start = *start * HZ_PER_KHZ;
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*end = *end * HZ_PER_KHZ;
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}
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static void get_ranges_from_chandef(struct cfg80211_chan_def *chandef,
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struct wbrf_ranges_in_out *ranges_in)
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{
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u64 start_freq1, end_freq1;
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u64 start_freq2, end_freq2;
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int bandwidth;
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bandwidth = nl80211_chan_width_to_mhz(chandef->width);
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get_chan_freq_boundary(chandef->center_freq1, bandwidth, &start_freq1, &end_freq1);
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ranges_in->band_list[0].start = start_freq1;
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ranges_in->band_list[0].end = end_freq1;
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ranges_in->num_of_ranges = 1;
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if (chandef->width == NL80211_CHAN_WIDTH_80P80) {
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get_chan_freq_boundary(chandef->center_freq2, bandwidth, &start_freq2, &end_freq2);
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ranges_in->band_list[1].start = start_freq2;
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ranges_in->band_list[1].end = end_freq2;
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ranges_in->num_of_ranges++;
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}
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}
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void ieee80211_add_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef)
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{
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struct wbrf_ranges_in_out ranges_in = {0};
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struct device *dev;
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if (!local->wbrf_supported)
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return;
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dev = local->hw.wiphy->dev.parent;
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get_ranges_from_chandef(chandef, &ranges_in);
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acpi_amd_wbrf_add_remove(dev, WBRF_RECORD_ADD, &ranges_in);
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}
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void ieee80211_remove_wbrf(struct ieee80211_local *local, struct cfg80211_chan_def *chandef)
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{
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struct wbrf_ranges_in_out ranges_in = {0};
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struct device *dev;
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if (!local->wbrf_supported)
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return;
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dev = local->hw.wiphy->dev.parent;
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get_ranges_from_chandef(chandef, &ranges_in);
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acpi_amd_wbrf_add_remove(dev, WBRF_RECORD_REMOVE, &ranges_in);
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}
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