diff options
Diffstat (limited to 'drivers/net/wireless/realtek/rtw89/chan.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/chan.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/chan.c b/drivers/net/wireless/realtek/rtw89/chan.c new file mode 100644 index 000000000000..a4f61c2f6512 --- /dev/null +++ b/drivers/net/wireless/realtek/rtw89/chan.c @@ -0,0 +1,235 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* Copyright(c) 2020-2022 Realtek Corporation + */ + +#include "chan.h" +#include "debug.h" + +static enum rtw89_subband rtw89_get_subband_type(enum rtw89_band band, + u8 center_chan) +{ + switch (band) { + default: + case RTW89_BAND_2G: + switch (center_chan) { + default: + case 1 ... 14: + return RTW89_CH_2G; + } + case RTW89_BAND_5G: + switch (center_chan) { + default: + case 36 ... 64: + return RTW89_CH_5G_BAND_1; + case 100 ... 144: + return RTW89_CH_5G_BAND_3; + case 149 ... 177: + return RTW89_CH_5G_BAND_4; + } + case RTW89_BAND_6G: + switch (center_chan) { + default: + case 1 ... 29: + return RTW89_CH_6G_BAND_IDX0; + case 33 ... 61: + return RTW89_CH_6G_BAND_IDX1; + case 65 ... 93: + return RTW89_CH_6G_BAND_IDX2; + case 97 ... 125: + return RTW89_CH_6G_BAND_IDX3; + case 129 ... 157: + return RTW89_CH_6G_BAND_IDX4; + case 161 ... 189: + return RTW89_CH_6G_BAND_IDX5; + case 193 ... 221: + return RTW89_CH_6G_BAND_IDX6; + case 225 ... 253: + return RTW89_CH_6G_BAND_IDX7; + } + } +} + +static enum rtw89_sc_offset rtw89_get_primary_chan_idx(enum rtw89_bandwidth bw, + u32 center_freq, + u32 primary_freq) +{ + u8 primary_chan_idx; + u32 offset; + + switch (bw) { + default: + case RTW89_CHANNEL_WIDTH_20: + primary_chan_idx = RTW89_SC_DONT_CARE; + break; + case RTW89_CHANNEL_WIDTH_40: + if (primary_freq > center_freq) + primary_chan_idx = RTW89_SC_20_UPPER; + else + primary_chan_idx = RTW89_SC_20_LOWER; + break; + case RTW89_CHANNEL_WIDTH_80: + case RTW89_CHANNEL_WIDTH_160: + if (primary_freq > center_freq) { + offset = (primary_freq - center_freq - 10) / 20; + primary_chan_idx = RTW89_SC_20_UPPER + offset * 2; + } else { + offset = (center_freq - primary_freq - 10) / 20; + primary_chan_idx = RTW89_SC_20_LOWER + offset * 2; + } + break; + } + + return primary_chan_idx; +} + +void rtw89_chan_create(struct rtw89_chan *chan, u8 center_chan, u8 primary_chan, + enum rtw89_band band, enum rtw89_bandwidth bandwidth) +{ + enum nl80211_band nl_band = rtw89_hw_to_nl80211_band(band); + u32 center_freq, primary_freq; + + memset(chan, 0, sizeof(*chan)); + chan->channel = center_chan; + chan->primary_channel = primary_chan; + chan->band_type = band; + chan->band_width = bandwidth; + + center_freq = ieee80211_channel_to_frequency(center_chan, nl_band); + primary_freq = ieee80211_channel_to_frequency(primary_chan, nl_band); + + chan->freq = center_freq; + chan->subband_type = rtw89_get_subband_type(band, center_chan); + chan->pri_ch_idx = rtw89_get_primary_chan_idx(bandwidth, center_freq, + primary_freq); +} + +bool rtw89_assign_entity_chan(struct rtw89_dev *rtwdev, + enum rtw89_sub_entity_idx idx, + const struct rtw89_chan *new) +{ + struct rtw89_hal *hal = &rtwdev->hal; + struct rtw89_chan *chan = &hal->chan[idx]; + struct rtw89_chan_rcd *rcd = &hal->chan_rcd[idx]; + bool band_changed; + + rcd->prev_primary_channel = chan->primary_channel; + rcd->prev_band_type = chan->band_type; + band_changed = new->band_type != chan->band_type; + + *chan = *new; + return band_changed; +} + +static void __rtw89_config_entity_chandef(struct rtw89_dev *rtwdev, + enum rtw89_sub_entity_idx idx, + const struct cfg80211_chan_def *chandef, + bool from_stack) +{ + struct rtw89_hal *hal = &rtwdev->hal; + + hal->chandef[idx] = *chandef; + + if (from_stack) + set_bit(idx, hal->entity_map); +} + +void rtw89_config_entity_chandef(struct rtw89_dev *rtwdev, + enum rtw89_sub_entity_idx idx, + const struct cfg80211_chan_def *chandef) +{ + __rtw89_config_entity_chandef(rtwdev, idx, chandef, true); +} + +static void rtw89_config_default_chandef(struct rtw89_dev *rtwdev) +{ + struct cfg80211_chan_def chandef = {0}; + + rtw89_get_default_chandef(&chandef); + __rtw89_config_entity_chandef(rtwdev, RTW89_SUB_ENTITY_0, &chandef, false); +} + +void rtw89_entity_init(struct rtw89_dev *rtwdev) +{ + struct rtw89_hal *hal = &rtwdev->hal; + + bitmap_zero(hal->entity_map, NUM_OF_RTW89_SUB_ENTITY); + rtw89_config_default_chandef(rtwdev); +} + +enum rtw89_entity_mode rtw89_entity_recalc(struct rtw89_dev *rtwdev) +{ + struct rtw89_hal *hal = &rtwdev->hal; + enum rtw89_entity_mode mode; + u8 weight; + + weight = bitmap_weight(hal->entity_map, NUM_OF_RTW89_SUB_ENTITY); + switch (weight) { + default: + rtw89_warn(rtwdev, "unknown ent chan weight: %d\n", weight); + bitmap_zero(hal->entity_map, NUM_OF_RTW89_SUB_ENTITY); + fallthrough; + case 0: + rtw89_config_default_chandef(rtwdev); + fallthrough; + case 1: + mode = RTW89_ENTITY_MODE_SCC; + break; + } + + rtw89_set_entity_mode(rtwdev, mode); + return mode; +} + +int rtw89_chanctx_ops_add(struct rtw89_dev *rtwdev, + struct ieee80211_chanctx_conf *ctx) +{ + struct rtw89_hal *hal = &rtwdev->hal; + struct rtw89_chanctx_cfg *cfg = (struct rtw89_chanctx_cfg *)ctx->drv_priv; + const struct rtw89_chip_info *chip = rtwdev->chip; + u8 idx; + + idx = find_first_zero_bit(hal->entity_map, NUM_OF_RTW89_SUB_ENTITY); + if (idx >= chip->support_chanctx_num) + return -ENOENT; + + rtw89_config_entity_chandef(rtwdev, idx, &ctx->def); + rtw89_set_channel(rtwdev); + cfg->idx = idx; + return 0; +} + +void rtw89_chanctx_ops_remove(struct rtw89_dev *rtwdev, + struct ieee80211_chanctx_conf *ctx) +{ + struct rtw89_hal *hal = &rtwdev->hal; + struct rtw89_chanctx_cfg *cfg = (struct rtw89_chanctx_cfg *)ctx->drv_priv; + + clear_bit(cfg->idx, hal->entity_map); + rtw89_set_channel(rtwdev); +} + +void rtw89_chanctx_ops_change(struct rtw89_dev *rtwdev, + struct ieee80211_chanctx_conf *ctx, + u32 changed) +{ + struct rtw89_chanctx_cfg *cfg = (struct rtw89_chanctx_cfg *)ctx->drv_priv; + u8 idx = cfg->idx; + + if (changed & IEEE80211_CHANCTX_CHANGE_WIDTH) { + rtw89_config_entity_chandef(rtwdev, idx, &ctx->def); + rtw89_set_channel(rtwdev); + } +} + +int rtw89_chanctx_ops_assign_vif(struct rtw89_dev *rtwdev, + struct rtw89_vif *rtwvif, + struct ieee80211_chanctx_conf *ctx) +{ + return 0; +} + +void rtw89_chanctx_ops_unassign_vif(struct rtw89_dev *rtwdev, + struct rtw89_vif *rtwvif, + struct ieee80211_chanctx_conf *ctx) +{ +} |