diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw/rs.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/rs.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/rs.c b/drivers/net/wireless/intel/iwlwifi/fw/rs.c new file mode 100644 index 000000000000..746f2acffb8f --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/fw/rs.c @@ -0,0 +1,161 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Copyright (C) 2021-2022, 2025 Intel Corporation + */ + +#include <net/mac80211.h> +#include "fw/api/rs.h" +#include "iwl-drv.h" +#include "iwl-config.h" + +#define IWL_DECLARE_RATE_INFO(r) \ + [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP + +/* + * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP + * */ +static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = { + IWL_DECLARE_RATE_INFO(1), + IWL_DECLARE_RATE_INFO(2), + IWL_DECLARE_RATE_INFO(5), + IWL_DECLARE_RATE_INFO(11), + IWL_DECLARE_RATE_INFO(6), + IWL_DECLARE_RATE_INFO(9), + IWL_DECLARE_RATE_INFO(12), + IWL_DECLARE_RATE_INFO(18), + IWL_DECLARE_RATE_INFO(24), + IWL_DECLARE_RATE_INFO(36), + IWL_DECLARE_RATE_INFO(48), + IWL_DECLARE_RATE_INFO(54), +}; + +/* mbps, mcs */ +static const struct iwl_rate_mcs_info rate_mcs[IWL_RATE_COUNT] = { + { "1", "BPSK DSSS"}, + { "2", "QPSK DSSS"}, + {"5.5", "BPSK CCK"}, + { "11", "QPSK CCK"}, + { "6", "BPSK 1/2"}, + { "9", "BPSK 1/2"}, + { "12", "QPSK 1/2"}, + { "18", "QPSK 3/4"}, + { "24", "16QAM 1/2"}, + { "36", "16QAM 3/4"}, + { "48", "64QAM 2/3"}, + { "54", "64QAM 3/4"}, + { "60", "64QAM 5/6"}, +}; + +static const char * const ant_name[] = { + [ANT_NONE] = "None", + [ANT_A] = "A", + [ANT_B] = "B", + [ANT_AB] = "AB", +}; + +static const char * const pretty_bw[] = { + "20Mhz", + "40Mhz", + "80Mhz", + "160 Mhz", + "320Mhz", +}; + +u8 iwl_fw_rate_idx_to_plcp(int idx) +{ + return fw_rate_idx_to_plcp[idx]; +} +IWL_EXPORT_SYMBOL(iwl_fw_rate_idx_to_plcp); + +const struct iwl_rate_mcs_info *iwl_rate_mcs(int idx) +{ + return &rate_mcs[idx]; +} +IWL_EXPORT_SYMBOL(iwl_rate_mcs); + +const char *iwl_rs_pretty_ant(u8 ant) +{ + if (ant >= ARRAY_SIZE(ant_name)) + return "UNKNOWN"; + + return ant_name[ant]; +} +IWL_EXPORT_SYMBOL(iwl_rs_pretty_ant); + +const char *iwl_rs_pretty_bw(int bw) +{ + if (bw >= ARRAY_SIZE(pretty_bw)) + return "unknown bw"; + + return pretty_bw[bw]; +} +IWL_EXPORT_SYMBOL(iwl_rs_pretty_bw); + +int rs_pretty_print_rate(char *buf, int bufsz, const u32 rate) +{ + char *type; + u8 mcs = 0, nss = 0; + u8 ant = (rate & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS; + u32 bw = (rate & RATE_MCS_CHAN_WIDTH_MSK) >> + RATE_MCS_CHAN_WIDTH_POS; + u32 format = rate & RATE_MCS_MOD_TYPE_MSK; + int index = 0; + bool sgi; + + switch (format) { + case RATE_MCS_MOD_TYPE_LEGACY_OFDM: + index = IWL_FIRST_OFDM_RATE; + fallthrough; + case RATE_MCS_MOD_TYPE_CCK: + index += rate & RATE_LEGACY_RATE_MSK; + + return scnprintf(buf, bufsz, "Legacy | ANT: %s Rate: %s Mbps", + iwl_rs_pretty_ant(ant), + iwl_rate_mcs(index)->mbps); + case RATE_MCS_MOD_TYPE_VHT: + type = "VHT"; + break; + case RATE_MCS_MOD_TYPE_HT: + type = "HT"; + break; + case RATE_MCS_MOD_TYPE_HE: + type = "HE"; + break; + case RATE_MCS_MOD_TYPE_EHT: + type = "EHT"; + break; + default: + type = "Unknown"; /* shouldn't happen */ + } + + mcs = format == RATE_MCS_MOD_TYPE_HT ? + RATE_HT_MCS_INDEX(rate) : + rate & RATE_MCS_CODE_MSK; + nss = u32_get_bits(rate, RATE_MCS_NSS_MSK); + sgi = format == RATE_MCS_MOD_TYPE_HE ? + iwl_he_is_sgi(rate) : + rate & RATE_MCS_SGI_MSK; + + return scnprintf(buf, bufsz, + "0x%x: %s | ANT: %s BW: %s MCS: %d NSS: %d %s%s%s%s%s", + rate, type, iwl_rs_pretty_ant(ant), iwl_rs_pretty_bw(bw), mcs, nss, + (sgi) ? "SGI " : "NGI ", + (rate & RATE_MCS_STBC_MSK) ? "STBC " : "", + (rate & RATE_MCS_LDPC_MSK) ? "LDPC " : "", + (rate & RATE_HE_DUAL_CARRIER_MODE_MSK) ? "DCM " : "", + (rate & RATE_MCS_BF_MSK) ? "BF " : ""); +} +IWL_EXPORT_SYMBOL(rs_pretty_print_rate); + +bool iwl_he_is_sgi(u32 rate_n_flags) +{ + u32 type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; + u32 ltf_gi = rate_n_flags & RATE_MCS_HE_GI_LTF_MSK; + + if (type == RATE_MCS_HE_TYPE_SU || + type == RATE_MCS_HE_TYPE_EXT_SU) + return ltf_gi == RATE_MCS_HE_SU_4_LTF_08_GI; + return false; +} +IWL_EXPORT_SYMBOL(iwl_he_is_sgi); + |