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[60.242.93.14]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-834ed80df96sm3595073b3a.54.2026.04.29.21.58.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2026 21:58:10 -0700 (PDT) From: Lachlan Hodges To: johannes@sipsolutions.net, Lachlan Hodges , Dan Callaghan , Arien Judge Cc: ayman.grais@morsemicro.com, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH wireless-next v2 18/31] wifi: mm81x: add rate_code.h Date: Thu, 30 Apr 2026 14:55:44 +1000 Message-ID: <20260430045615.334669-19-lachlan.hodges@morsemicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260430045615.334669-1-lachlan.hodges@morsemicro.com> References: <20260430045615.334669-1-lachlan.hodges@morsemicro.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit (Patches split per file for review, will be a single commit alongside SDIO ids once review is complete. See cover letter for more information) Signed-off-by: Lachlan Hodges --- .../net/wireless/morsemicro/mm81x/rate_code.h | 177 ++++++++++++++++++ 1 file changed, 177 insertions(+) create mode 100644 drivers/net/wireless/morsemicro/mm81x/rate_code.h diff --git a/drivers/net/wireless/morsemicro/mm81x/rate_code.h b/drivers/net/wireless/morsemicro/mm81x/rate_code.h new file mode 100644 index 000000000000..c60fcb9447c4 --- /dev/null +++ b/drivers/net/wireless/morsemicro/mm81x/rate_code.h @@ -0,0 +1,177 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2017-2026 Morse Micro + */ + +#ifndef _MM81X_RATE_CODE_H_ +#define _MM81X_RATE_CODE_H_ + +#include + +enum dot11_bandwidth { + DOT11_BANDWIDTH_1MHZ = 0, + DOT11_BANDWIDTH_2MHZ = 1, + DOT11_BANDWIDTH_4MHZ = 2, + DOT11_BANDWIDTH_8MHZ = 3, + DOT11_BANDWIDTH_16MHZ = 4, + + DOT11_MAX_BANDWIDTH = DOT11_BANDWIDTH_16MHZ, + DOT11_INVALID_BANDWIDTH = 5 +}; + +enum mm81x_rate_preamble { + /* S1G LONG format (with SIG-A and SIG-B) */ + MM81X_RATE_PREAMBLE_S1G_LONG = 0, + /* This is the most common format used */ + MM81X_RATE_PREAMBLE_S1G_SHORT = 1, + /* S1G 1M format */ + MM81X_RATE_PREAMBLE_S1G_1M = 2, + + MM81X_RATE_MAX_PREAMBLE = MM81X_RATE_PREAMBLE_S1G_1M, + MM81X_RATE_INVALID_PREAMBLE = 7 +}; + +typedef __le32 mm81x_rate_code_t; + +#define MM81X_RATECODE_PREAMBLE (0x0000000F) +#define MM81X_RATECODE_MCS_INDEX (0x000000F0) +#define MM81X_RATECODE_NSS_INDEX (0x00000700) +#define MM81X_RATECODE_BW_INDEX (0x00003800) +#define MM81X_RATECODE_RTS_FLAG (0x00010000) +#define MM81X_RATECODE_SHORT_GI_FLAG (0x00040000) +#define MM81X_RATECODE_DUP_BW_INDEX (0x01C00000) + +static inline enum mm81x_rate_preamble +mm81x_ratecode_preamble_get(mm81x_rate_code_t rc) +{ + return (enum mm81x_rate_preamble)( + le32_get_bits(rc, MM81X_RATECODE_PREAMBLE)); +} + +static inline u8 mm81x_ratecode_mcs_index_get(mm81x_rate_code_t rc) +{ + return le32_get_bits(rc, MM81X_RATECODE_MCS_INDEX); +} + +static inline u8 mm81x_ratecode_nss_index_get(mm81x_rate_code_t rc) +{ + return le32_get_bits(rc, MM81X_RATECODE_NSS_INDEX); +} + +static inline enum dot11_bandwidth +mm81x_ratecode_bw_index_get(mm81x_rate_code_t rc) +{ + return (enum dot11_bandwidth)( + le32_get_bits(rc, MM81X_RATECODE_BW_INDEX)); +} + +static inline bool mm81x_ratecode_rts_get(mm81x_rate_code_t rc) +{ + return le32_get_bits(rc, MM81X_RATECODE_RTS_FLAG); +} + +static inline bool mm81x_ratecode_sgi_get(mm81x_rate_code_t rc) +{ + return le32_get_bits(rc, MM81X_RATECODE_SHORT_GI_FLAG); +} + +static inline enum dot11_bandwidth +mm81x_ratecode_dup_bw_index_get(mm81x_rate_code_t rc) +{ + return (enum dot11_bandwidth)( + le32_get_bits(rc, MM81X_RATECODE_DUP_BW_INDEX)); +} + +#define MM81X_RATECODE_INIT(bw_idx, nss_idx, mcs_idx, preamble) \ + (le32_encode_bits((bw_idx), MM81X_RATECODE_BW_INDEX) | \ + le32_encode_bits((nss_idx), MM81X_RATECODE_NSS_INDEX) | \ + le32_encode_bits((mcs_idx), MM81X_RATECODE_MCS_INDEX) | \ + le32_encode_bits((preamble), MM81X_RATECODE_PREAMBLE)) + +static inline mm81x_rate_code_t +mm81x_ratecode_init(enum dot11_bandwidth bw_index, u32 nss_index, u32 mcs_index, + enum mm81x_rate_preamble preamble) +{ + return MM81X_RATECODE_INIT(bw_index, nss_index, mcs_index, preamble); +} + +static inline void +mm81x_ratecode_preamble_set(mm81x_rate_code_t *rc, + enum mm81x_rate_preamble preamble) +{ + *rc = (*rc & cpu_to_le32(~MM81X_RATECODE_PREAMBLE)) | + le32_encode_bits(preamble, MM81X_RATECODE_PREAMBLE); +} + +static inline void mm81x_ratecode_mcs_index_set(mm81x_rate_code_t *rc, + u32 mcs_index) +{ + *rc = (*rc & cpu_to_le32(~MM81X_RATECODE_MCS_INDEX)) | + le32_encode_bits(mcs_index, MM81X_RATECODE_MCS_INDEX); +} + +static inline void mm81x_ratecode_nss_index_set(mm81x_rate_code_t *rc, + u32 nss_index) +{ + *rc = (*rc & cpu_to_le32(~MM81X_RATECODE_NSS_INDEX)) | + le32_encode_bits(nss_index, MM81X_RATECODE_NSS_INDEX); +} + +static inline void mm81x_ratecode_bw_index_set(mm81x_rate_code_t *rc, + enum dot11_bandwidth bw_index) +{ + *rc = (*rc & cpu_to_le32(~MM81X_RATECODE_BW_INDEX)) | + le32_encode_bits(bw_index, MM81X_RATECODE_BW_INDEX); +} + +static inline void +mm81x_ratecode_update_s1g_bw_preamble(mm81x_rate_code_t *rc, + enum dot11_bandwidth bw_index) +{ + enum mm81x_rate_preamble pream = MM81X_RATE_PREAMBLE_S1G_SHORT; + + if (bw_index == DOT11_BANDWIDTH_1MHZ) + pream = MM81X_RATE_PREAMBLE_S1G_1M; + + mm81x_ratecode_preamble_set(rc, pream); + mm81x_ratecode_bw_index_set(rc, bw_index); +} + +static inline void +mm81x_ratecode_dup_bw_index_set(mm81x_rate_code_t *rc, + enum dot11_bandwidth dup_bw_index) +{ + *rc = (*rc & cpu_to_le32(~MM81X_RATECODE_DUP_BW_INDEX)) | + le32_encode_bits(dup_bw_index, MM81X_RATECODE_DUP_BW_INDEX); +} + +static inline void mm81x_ratecode_enable_rts(mm81x_rate_code_t *rc) +{ + *rc |= cpu_to_le32(MM81X_RATECODE_RTS_FLAG); +} + +static inline void mm81x_ratecode_enable_sgi(mm81x_rate_code_t *rc) +{ + *rc |= cpu_to_le32(MM81X_RATECODE_SHORT_GI_FLAG); +} + +static inline enum dot11_bandwidth mm81x_ratecode_bw_mhz_to_bw_index(u8 bw_mhz) +{ + return ((bw_mhz == 1) ? DOT11_BANDWIDTH_1MHZ : + (bw_mhz == 2) ? DOT11_BANDWIDTH_2MHZ : + (bw_mhz == 4) ? DOT11_BANDWIDTH_4MHZ : + (bw_mhz == 8) ? DOT11_BANDWIDTH_8MHZ : + DOT11_BANDWIDTH_2MHZ); +} + +static inline u8 +mm81x_ratecode_bw_index_to_s1g_bw_mhz(enum dot11_bandwidth bw_idx) +{ + return ((bw_idx == DOT11_BANDWIDTH_1MHZ) ? 1 : + (bw_idx == DOT11_BANDWIDTH_2MHZ) ? 2 : + (bw_idx == DOT11_BANDWIDTH_4MHZ) ? 4 : + (bw_idx == DOT11_BANDWIDTH_8MHZ) ? 8 : + 2); +} + +#endif -- 2.43.0