From patchwork Tue Dec 13 17:33:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bitterblue Smith X-Patchwork-Id: 634842 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95D87C4332F for ; Tue, 13 Dec 2022 17:33:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236342AbiLMRdk (ORCPT ); Tue, 13 Dec 2022 12:33:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51466 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236421AbiLMRdW (ORCPT ); Tue, 13 Dec 2022 12:33:22 -0500 Received: from mail-ej1-x631.google.com (mail-ej1-x631.google.com [IPv6:2a00:1450:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D1F151AF20 for ; Tue, 13 Dec 2022 09:33:18 -0800 (PST) Received: by mail-ej1-x631.google.com with SMTP id t17so38313820eju.1 for ; Tue, 13 Dec 2022 09:33:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:references:cc:to:from :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=S5VW6qBwgCQvJyUsgmKyuIWHH074qFCjultoWEczYms=; b=VmoOrjN8t+ELkWMUz8Nrs4aVoIIN3SNj+JW4FnNCgtpOd32DINFW98LrkDL7h1B37H bFQQDQCOHbpVkQNPCSbBM7CbDA4K7c8+fXWYhrfyye6AMhOnC68QMUPAkg5zXqGrB6jr Vo0F4F4h4kJNmkE3s7vUf9IA/kEp1AWXQ5iCCBeyOIIRd2jg9/wbiHghKR8r2jll63wo U/zwotUY+Y9uKqeMSwlv01sIHvz9aZUPBGIPVQLvMNDXm0Y/4qbRJPPktU7ZMGkZr3qo w2Umff2oGEBVQWUL3S661qORPcNponSEdmXrODgouObw56wNvpu+VdauIkynP64kRbSt hBNA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:references:cc:to:from :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=S5VW6qBwgCQvJyUsgmKyuIWHH074qFCjultoWEczYms=; b=tgLwiLHGPS8fH5+OpE9wyUj8tk1ggqqg+yT+ILvRnikL1dNKvKd+yGGU0Dgxc5ADWQ juH7JWCHIZsb5Ckue1MKBPPtrPAmfFfHS8MaWkIwO42Q2qCP18+HNCtnQgq0k8NKHFj+ r+eJiVqOyzLtwW0o4j+HKK/VpMkJmNM+NEOQe2SbUJkpnKxqMOPwef6RCKQkqbY3RCbe FfzNnewnKDbghsP0zwjmoRzUHzL6dfE167B7bf07wlasBgkVlbqQiv7YB6H6pfJQmCrK ++qFomSnZkzxoVb2UKWLv/5NiB/mFG7UZjF2PvGAwTUblsSTbAN8GYJa1fJRBM8PVn0I nR3A== X-Gm-Message-State: ANoB5pnZKYI5P9G/UVL+XMDNLPFoYaCCwgdFzToNC/NIJn9sseIx+5Xk B7OZA+S0u+Ld+D4HGt04IYLRKlVtZzo= X-Google-Smtp-Source: AA0mqf4nDbe+pI8TTfs0PK6wbFjQpNrjg8SDgfHv9znzRhhHXkiFpeOsf/gN6C6KUu5Neyavpph5dw== X-Received: by 2002:a17:906:6892:b0:7c1:637:585d with SMTP id n18-20020a170906689200b007c10637585dmr17620752ejr.0.1670952797221; Tue, 13 Dec 2022 09:33:17 -0800 (PST) Received: from [192.168.1.50] ([79.119.240.153]) by smtp.gmail.com with ESMTPSA id y1-20020a170906914100b007bf71053d97sm4769665ejw.40.2022.12.13.09.33.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 Dec 2022 09:33:16 -0800 (PST) Message-ID: Date: Tue, 13 Dec 2022 19:33:15 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.3.3 Subject: [PATCH v2 5/5] wifi: rtl8xxxu: Add rate control code for RTL8188EU Content-Language: en-US From: Bitterblue Smith To: "linux-wireless@vger.kernel.org" Cc: Jes Sorensen , Ping-Ke Shih , Andrea Merello , Taehee Yoo References: In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Copied from the newer vendor driver, v5.2.2.4. Signed-off-by: Bitterblue Smith --- v2: - Implement suggestions from Ping-Ke Shih: - Add missing break in two switch statements. - Remove unnecessary initialisation of idx in rtl8188e_set_tx_rpt_timing(). --- .../net/wireless/realtek/rtl8xxxu/rtl8xxxu.h | 39 ++ .../realtek/rtl8xxxu/rtl8xxxu_8188e.c | 601 +++++++++++++++++- .../wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 131 +++- 3 files changed, 741 insertions(+), 30 deletions(-) diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h index 29f5dbee16b0..be9479f969b7 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h @@ -531,6 +531,7 @@ struct rtl8xxxu_txdesc40 { #define TXDESC32_CTS_SELF_ENABLE BIT(11) #define TXDESC32_RTS_CTS_ENABLE BIT(12) #define TXDESC32_HW_RTS_ENABLE BIT(13) +#define TXDESC32_PT_STAGE_MASK GENMASK(17, 15) #define TXDESC_PRIME_CH_OFF_LOWER BIT(20) #define TXDESC_PRIME_CH_OFF_UPPER BIT(21) #define TXDESC32_SHORT_PREAMBLE BIT(24) @@ -1376,6 +1377,39 @@ struct rtl8xxxu_ra_report { u8 desc_rate; }; +struct rtl8xxxu_ra_info { + u8 rate_id; + u32 rate_mask; + u32 ra_use_rate; + u8 rate_sgi; + u8 rssi_sta_ra; /* Percentage */ + u8 pre_rssi_sta_ra; + u8 sgi_enable; + u8 decision_rate; + u8 pre_rate; + u8 highest_rate; + u8 lowest_rate; + u32 nsc_up; + u32 nsc_down; + u32 total; + u16 retry[5]; + u16 drop; + u16 rpt_time; + u16 pre_min_rpt_time; + u8 dynamic_tx_rpt_timing_counter; + u8 ra_waiting_counter; + u8 ra_pending_counter; + u8 ra_drop_after_down; + u8 pt_try_state; /* 0 trying state, 1 for decision state */ + u8 pt_stage; /* 0~6 */ + u8 pt_stop_count; /* Stop PT counter */ + u8 pt_pre_rate; /* if rate change do PT */ + u8 pt_pre_rssi; /* if RSSI change 5% do PT */ + u8 pt_mode_ss; /* decide which rate should do PT */ + u8 ra_stage; /* StageRA, decide how many times RA will be done between PT */ + u8 pt_smooth_factor; +}; + #define CFO_TH_XTAL_HIGH 20 /* kHz */ #define CFO_TH_XTAL_LOW 10 /* kHz */ #define CFO_TH_ATC 80 /* kHz */ @@ -1509,6 +1543,7 @@ struct rtl8xxxu_priv { struct rtl8xxxu_btcoex bt_coex; struct rtl8xxxu_ra_report ra_report; struct rtl8xxxu_cfo_tracking cfo_tracking; + struct rtl8xxxu_ra_info ra_info; }; struct rtl8xxxu_rx_urb { @@ -1684,6 +1719,10 @@ void rtl8723bu_phy_init_antenna_selection(struct rtl8xxxu_priv *priv); void rtl8723a_set_crystal_cap(struct rtl8xxxu_priv *priv, u8 crystal_cap); void rtl8188f_set_crystal_cap(struct rtl8xxxu_priv *priv, u8 crystal_cap); s8 rtl8723a_cck_rssi(struct rtl8xxxu_priv *priv, u8 cck_agc_rpt); +void rtl8xxxu_update_ra_report(struct rtl8xxxu_ra_report *rarpt, + u8 rate, u8 sgi, u8 bw); +void rtl8188e_ra_info_init_all(struct rtl8xxxu_ra_info *ra); +void rtl8188e_handle_ra_tx_report2(struct rtl8xxxu_priv *priv, struct sk_buff *skb); extern struct rtl8xxxu_fileops rtl8188fu_fops; extern struct rtl8xxxu_fileops rtl8188eu_fops; diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c index 587555da9bce..f5693b2c1be6 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c @@ -280,6 +280,132 @@ static const struct rtl8xxxu_rfregval rtl8188eu_radioa_init_table[] = { {0xff, 0xffffffff} }; +#define PERENTRY 23 +#define RETRYSIZE 5 +#define RATESIZE 28 +#define TX_RPT2_ITEM_SIZE 8 + +static const u8 retry_penalty[PERENTRY][RETRYSIZE + 1] = { + {5, 4, 3, 2, 0, 3}, /* 92 , idx=0 */ + {6, 5, 4, 3, 0, 4}, /* 86 , idx=1 */ + {6, 5, 4, 2, 0, 4}, /* 81 , idx=2 */ + {8, 7, 6, 4, 0, 6}, /* 75 , idx=3 */ + {10, 9, 8, 6, 0, 8}, /* 71 , idx=4 */ + {10, 9, 8, 4, 0, 8}, /* 66 , idx=5 */ + {10, 9, 8, 2, 0, 8}, /* 62 , idx=6 */ + {10, 9, 8, 0, 0, 8}, /* 59 , idx=7 */ + {18, 17, 16, 8, 0, 16}, /* 53 , idx=8 */ + {26, 25, 24, 16, 0, 24}, /* 50 , idx=9 */ + {34, 33, 32, 24, 0, 32}, /* 47 , idx=0x0a */ + {34, 31, 28, 20, 0, 32}, /* 43 , idx=0x0b */ + {34, 31, 27, 18, 0, 32}, /* 40 , idx=0x0c */ + {34, 31, 26, 16, 0, 32}, /* 37 , idx=0x0d */ + {34, 30, 22, 16, 0, 32}, /* 32 , idx=0x0e */ + {34, 30, 24, 16, 0, 32}, /* 26 , idx=0x0f */ + {49, 46, 40, 16, 0, 48}, /* 20 , idx=0x10 */ + {49, 45, 32, 0, 0, 48}, /* 17 , idx=0x11 */ + {49, 45, 22, 18, 0, 48}, /* 15 , idx=0x12 */ + {49, 40, 24, 16, 0, 48}, /* 12 , idx=0x13 */ + {49, 32, 18, 12, 0, 48}, /* 9 , idx=0x14 */ + {49, 22, 18, 14, 0, 48}, /* 6 , idx=0x15 */ + {49, 16, 16, 0, 0, 48} /* 3, idx=0x16 */ +}; + +static const u8 retry_penalty_up[RETRYSIZE + 1] = {49, 44, 16, 16, 0, 48}; /* 12% for rate up */ + +static const u8 pt_penalty[RETRYSIZE + 1] = {34, 31, 30, 24, 0, 32}; + +static const u8 retry_penalty_idx_normal[2][RATESIZE] = { + { /* RSSI>TH */ + 4, 4, 4, 5, + 4, 4, 5, 7, 7, 7, 8, 0x0a, + 4, 4, 4, 4, 6, 0x0a, 0x0b, 0x0d, + 5, 5, 7, 7, 8, 0x0b, 0x0d, 0x0f + }, + { /* RSSITH */ + 4, 4, 4, 5, + 4, 4, 5, 7, 7, 7, 8, 0x0a, + 4, 4, 4, 4, 6, 0x0a, 0x0b, 0x0d, + 5, 5, 7, 7, 8, 0x0b, 0x0d, 0x0f + }, + { /* RSSIudev->dev; @@ -1239,6 +1365,479 @@ static s8 rtl8188e_cck_rssi(struct rtl8xxxu_priv *priv, u8 cck_agc_rpt) return rx_pwr_all; } +static void rtl8188e_set_tx_rpt_timing(struct rtl8xxxu_ra_info *ra, u8 timing) +{ + u8 idx; + + for (idx = 0; idx < 5; idx++) + if (dynamic_tx_rpt_timing[idx] == ra->rpt_time) + break; + + if (timing == DEFAULT_TIMING) { + idx = 0; /* 200ms */ + } else if (timing == INCREASE_TIMING) { + if (idx < 5) + idx++; + } else if (timing == DECREASE_TIMING) { + if (idx > 0) + idx--; + } + + ra->rpt_time = dynamic_tx_rpt_timing[idx]; +} + +static void rtl8188e_rate_down(struct rtl8xxxu_ra_info *ra) +{ + u8 rate_id = ra->pre_rate; + u8 lowest_rate = ra->lowest_rate; + u8 highest_rate = ra->highest_rate; + s8 i; + + if (rate_id > highest_rate) { + rate_id = highest_rate; + } else if (ra->rate_sgi) { + ra->rate_sgi = 0; + } else if (rate_id > lowest_rate) { + if (rate_id > 0) { + for (i = rate_id - 1; i >= lowest_rate; i--) { + if (ra->ra_use_rate & BIT(i)) { + rate_id = i; + goto rate_down_finish; + } + } + } + } else if (rate_id <= lowest_rate) { + rate_id = lowest_rate; + } + +rate_down_finish: + if (ra->ra_waiting_counter == 1) { + ra->ra_waiting_counter++; + ra->ra_pending_counter++; + } else if (ra->ra_waiting_counter > 1) { + ra->ra_waiting_counter = 0; + ra->ra_pending_counter = 0; + } + + if (ra->ra_pending_counter >= 4) + ra->ra_pending_counter = 4; + + ra->ra_drop_after_down = 1; + + ra->decision_rate = rate_id; + + rtl8188e_set_tx_rpt_timing(ra, DECREASE_TIMING); +} + +static void rtl8188e_rate_up(struct rtl8xxxu_ra_info *ra) +{ + u8 rate_id = ra->pre_rate; + u8 highest_rate = ra->highest_rate; + u8 i; + + if (ra->ra_waiting_counter == 1) { + ra->ra_waiting_counter = 0; + ra->ra_pending_counter = 0; + } else if (ra->ra_waiting_counter > 1) { + ra->pre_rssi_sta_ra = ra->rssi_sta_ra; + goto rate_up_finish; + } + + rtl8188e_set_tx_rpt_timing(ra, DEFAULT_TIMING); + + if (rate_id < highest_rate) { + for (i = rate_id + 1; i <= highest_rate; i++) { + if (ra->ra_use_rate & BIT(i)) { + rate_id = i; + goto rate_up_finish; + } + } + } else if (rate_id == highest_rate) { + if (ra->sgi_enable && !ra->rate_sgi) + ra->rate_sgi = 1; + else if (!ra->sgi_enable) + ra->rate_sgi = 0; + } else { /* rate_id > ra->highest_rate */ + rate_id = highest_rate; + } + +rate_up_finish: + if (ra->ra_waiting_counter == (4 + pending_for_rate_up_fail[ra->ra_pending_counter])) + ra->ra_waiting_counter = 0; + else + ra->ra_waiting_counter++; + + ra->decision_rate = rate_id; +} + +static void rtl8188e_reset_ra_counter(struct rtl8xxxu_ra_info *ra) +{ + u8 rate_id = ra->decision_rate; + + ra->nsc_up = (n_threshold_high[rate_id] + n_threshold_low[rate_id]) >> 1; + ra->nsc_down = (n_threshold_high[rate_id] + n_threshold_low[rate_id]) >> 1; +} + +static void rtl8188e_rate_decision(struct rtl8xxxu_ra_info *ra) +{ + struct rtl8xxxu_priv *priv = container_of(ra, struct rtl8xxxu_priv, ra_info); + const u8 *retry_penalty_idx_0; + const u8 *retry_penalty_idx_1; + const u8 *retry_penalty_up_idx; + u8 rate_id, penalty_id1, penalty_id2; + int i; + + if (ra->total == 0) + return; + + if (ra->ra_drop_after_down) { + ra->ra_drop_after_down--; + + rtl8188e_reset_ra_counter(ra); + + return; + } + + if (priv->chip_cut == 8) { /* cut I */ + retry_penalty_idx_0 = retry_penalty_idx_cut_i[0]; + retry_penalty_idx_1 = retry_penalty_idx_cut_i[1]; + retry_penalty_up_idx = retry_penalty_up_idx_cut_i; + } else { + retry_penalty_idx_0 = retry_penalty_idx_normal[0]; + retry_penalty_idx_1 = retry_penalty_idx_normal[1]; + retry_penalty_up_idx = retry_penalty_up_idx_normal; + } + + if (ra->rssi_sta_ra < (ra->pre_rssi_sta_ra - 3) || + ra->rssi_sta_ra > (ra->pre_rssi_sta_ra + 3)) { + ra->pre_rssi_sta_ra = ra->rssi_sta_ra; + ra->ra_waiting_counter = 0; + ra->ra_pending_counter = 0; + } + + /* Start RA decision */ + if (ra->pre_rate > ra->highest_rate) + rate_id = ra->highest_rate; + else + rate_id = ra->pre_rate; + + /* rate down */ + if (ra->rssi_sta_ra > rssi_threshold[rate_id]) + penalty_id1 = retry_penalty_idx_0[rate_id]; + else + penalty_id1 = retry_penalty_idx_1[rate_id]; + + for (i = 0; i < 5; i++) + ra->nsc_down += ra->retry[i] * retry_penalty[penalty_id1][i]; + + if (ra->nsc_down > (ra->total * retry_penalty[penalty_id1][5])) + ra->nsc_down -= ra->total * retry_penalty[penalty_id1][5]; + else + ra->nsc_down = 0; + + /* rate up */ + penalty_id2 = retry_penalty_up_idx[rate_id]; + + for (i = 0; i < 5; i++) + ra->nsc_up += ra->retry[i] * retry_penalty[penalty_id2][i]; + + if (ra->nsc_up > (ra->total * retry_penalty[penalty_id2][5])) + ra->nsc_up -= ra->total * retry_penalty[penalty_id2][5]; + else + ra->nsc_up = 0; + + if (ra->nsc_down < n_threshold_low[rate_id] || + ra->drop > dropping_necessary[rate_id]) { + rtl8188e_rate_down(ra); + + rtl8xxxu_update_ra_report(&priv->ra_report, ra->decision_rate, + ra->rate_sgi, priv->ra_report.txrate.bw); + } else if (ra->nsc_up > n_threshold_high[rate_id]) { + rtl8188e_rate_up(ra); + + rtl8xxxu_update_ra_report(&priv->ra_report, ra->decision_rate, + ra->rate_sgi, priv->ra_report.txrate.bw); + } + + if (ra->decision_rate == ra->pre_rate) + ra->dynamic_tx_rpt_timing_counter++; + else + ra->dynamic_tx_rpt_timing_counter = 0; + + if (ra->dynamic_tx_rpt_timing_counter >= 4) { + /* Rate didn't change 4 times, extend RPT timing */ + rtl8188e_set_tx_rpt_timing(ra, INCREASE_TIMING); + ra->dynamic_tx_rpt_timing_counter = 0; + } + + ra->pre_rate = ra->decision_rate; + + rtl8188e_reset_ra_counter(ra); +} + +static void rtl8188e_power_training_try_state(struct rtl8xxxu_ra_info *ra) +{ + ra->pt_try_state = 0; + switch (ra->pt_mode_ss) { + case 3: + if (ra->decision_rate >= DESC_RATE_MCS13) + ra->pt_try_state = 1; + break; + case 2: + if (ra->decision_rate >= DESC_RATE_MCS5) + ra->pt_try_state = 1; + break; + case 1: + if (ra->decision_rate >= DESC_RATE_48M) + ra->pt_try_state = 1; + break; + case 0: + if (ra->decision_rate >= DESC_RATE_11M) + ra->pt_try_state = 1; + break; + default: + ra->pt_try_state = 0; + break; + } + + if (ra->rssi_sta_ra < 48) { + ra->pt_stage = 0; + } else if (ra->pt_try_state == 1) { + if ((ra->pt_stop_count >= 10) || + (ra->pt_pre_rssi > ra->rssi_sta_ra + 5) || + (ra->pt_pre_rssi < ra->rssi_sta_ra - 5) || + (ra->decision_rate != ra->pt_pre_rate)) { + if (ra->pt_stage == 0) + ra->pt_stage = 1; + else if (ra->pt_stage == 1) + ra->pt_stage = 3; + else + ra->pt_stage = 5; + + ra->pt_pre_rssi = ra->rssi_sta_ra; + ra->pt_stop_count = 0; + } else { + ra->ra_stage = 0; + ra->pt_stop_count++; + } + } else { + ra->pt_stage = 0; + ra->ra_stage = 0; + } + + ra->pt_pre_rate = ra->decision_rate; + + /* TODO: implement the "false alarm" statistics for this */ + /* Disable power training when noisy environment */ + /* if (p_dm_odm->is_disable_power_training) { */ + if (1) { + ra->pt_stage = 0; + ra->ra_stage = 0; + ra->pt_stop_count = 0; + } +} + +static void rtl8188e_power_training_decision(struct rtl8xxxu_ra_info *ra) +{ + u8 temp_stage; + u32 numsc; + u32 num_total; + u8 stage_id; + u8 j; + + numsc = 0; + num_total = ra->total * pt_penalty[5]; + for (j = 0; j <= 4; j++) { + numsc += ra->retry[j] * pt_penalty[j]; + + if (numsc > num_total) + break; + } + + j = j >> 1; + temp_stage = (ra->pt_stage + 1) >> 1; + if (temp_stage > j) + stage_id = temp_stage - j; + else + stage_id = 0; + + ra->pt_smooth_factor = (ra->pt_smooth_factor >> 1) + + (ra->pt_smooth_factor >> 2) + + stage_id * 16 + 2; + if (ra->pt_smooth_factor > 192) + ra->pt_smooth_factor = 192; + stage_id = ra->pt_smooth_factor >> 6; + temp_stage = stage_id * 2; + if (temp_stage != 0) + temp_stage--; + if (ra->drop > 3) + temp_stage = 0; + ra->pt_stage = temp_stage; +} + +void rtl8188e_handle_ra_tx_report2(struct rtl8xxxu_priv *priv, struct sk_buff *skb) +{ + u32 *_rx_desc = (u32 *)(skb->data - sizeof(struct rtl8xxxu_rxdesc16)); + struct rtl8xxxu_rxdesc16 *rx_desc = (struct rtl8xxxu_rxdesc16 *)_rx_desc; + struct device *dev = &priv->udev->dev; + struct rtl8xxxu_ra_info *ra = &priv->ra_info; + + u32 tx_rpt_len = rx_desc->pktlen & 0x3ff; + u32 items = tx_rpt_len / TX_RPT2_ITEM_SIZE; + u64 macid_valid = ((u64)_rx_desc[5] << 32) | _rx_desc[4]; + u32 macid; + u8 *rpt = skb->data; + bool valid; + u16 min_rpt_time = 0x927c; + + dev_dbg(dev, "%s: len: %d items: %d\n", __func__, tx_rpt_len, items); + + for (macid = 0; macid < items; macid++) { + valid = false; + + if (macid < 64) + valid = macid_valid & BIT(macid); + + if (valid) { + ra->retry[0] = le16_to_cpu(*(__le16 *)rpt); + ra->retry[1] = rpt[2]; + ra->retry[2] = rpt[3]; + ra->retry[3] = rpt[4]; + ra->retry[4] = rpt[5]; + ra->drop = rpt[6]; + ra->total = ra->retry[0] + ra->retry[1] + ra->retry[2] + + ra->retry[3] + ra->retry[4] + ra->drop; + + if (ra->total > 0) { + if (ra->ra_stage < 5) + rtl8188e_rate_decision(ra); + else if (ra->ra_stage == 5) + rtl8188e_power_training_try_state(ra); + else /* ra->ra_stage == 6 */ + rtl8188e_power_training_decision(ra); + + if (ra->ra_stage <= 5) + ra->ra_stage++; + else + ra->ra_stage = 0; + } + } else if (macid == 0) { + dev_warn(dev, "%s: TX report item 0 not valid\n", __func__); + } + + dev_dbg(dev, "%s: valid: %d retry: %d %d %d %d %d drop: %d\n", + __func__, valid, + ra->retry[0], ra->retry[1], ra->retry[2], + ra->retry[3], ra->retry[4], ra->drop); + + if (min_rpt_time > ra->rpt_time) + min_rpt_time = ra->rpt_time; + + rpt += TX_RPT2_ITEM_SIZE; + + /* + * We only use macid 0, so only the first item is relevant. + * AP mode will use more of them if it's ever implemented. + */ + break; + } + + if (min_rpt_time != ra->pre_min_rpt_time) { + rtl8xxxu_write16(priv, REG_TX_REPORT_TIME, min_rpt_time); + ra->pre_min_rpt_time = min_rpt_time; + } +} + +static void rtl8188e_arfb_refresh(struct rtl8xxxu_ra_info *ra) +{ + s8 i; + + ra->ra_use_rate = ra->rate_mask; + + /* Highest rate */ + if (ra->ra_use_rate) { + for (i = RATESIZE; i >= 0; i--) { + if (ra->ra_use_rate & BIT(i)) { + ra->highest_rate = i; + break; + } + } + } else { + ra->highest_rate = 0; + } + + /* Lowest rate */ + if (ra->ra_use_rate) { + for (i = 0; i < RATESIZE; i++) { + if (ra->ra_use_rate & BIT(i)) { + ra->lowest_rate = i; + break; + } + } + } else { + ra->lowest_rate = 0; + } + + if (ra->highest_rate > DESC_RATE_MCS7) + ra->pt_mode_ss = 3; + else if (ra->highest_rate > DESC_RATE_54M) + ra->pt_mode_ss = 2; + else if (ra->highest_rate > DESC_RATE_11M) + ra->pt_mode_ss = 1; + else + ra->pt_mode_ss = 0; +} + +static void +rtl8188e_update_rate_mask(struct rtl8xxxu_priv *priv, + u32 ramask, u8 rateid, int sgi, int txbw_40mhz) +{ + struct rtl8xxxu_ra_info *ra = &priv->ra_info; + + ra->rate_id = rateid; + ra->rate_mask = ramask; + ra->sgi_enable = sgi; + + rtl8188e_arfb_refresh(ra); +} + +void rtl8188e_ra_info_init_all(struct rtl8xxxu_ra_info *ra) +{ + ra->decision_rate = DESC_RATE_MCS7; + ra->pre_rate = DESC_RATE_MCS7; + ra->highest_rate = DESC_RATE_MCS7; + ra->lowest_rate = 0; + ra->rate_id = 0; + ra->rate_mask = 0xfffff; + ra->rssi_sta_ra = 0; + ra->pre_rssi_sta_ra = 0; + ra->sgi_enable = 0; + ra->ra_use_rate = 0xfffff; + ra->nsc_down = (n_threshold_high[DESC_RATE_MCS7] + n_threshold_low[DESC_RATE_MCS7]) / 2; + ra->nsc_up = (n_threshold_high[DESC_RATE_MCS7] + n_threshold_low[DESC_RATE_MCS7]) / 2; + ra->rate_sgi = 0; + ra->rpt_time = 0x927c; + ra->drop = 0; + ra->retry[0] = 0; + ra->retry[1] = 0; + ra->retry[2] = 0; + ra->retry[3] = 0; + ra->retry[4] = 0; + ra->total = 0; + ra->ra_waiting_counter = 0; + ra->ra_pending_counter = 0; + ra->ra_drop_after_down = 0; + + ra->pt_try_state = 0; + ra->pt_stage = 5; + ra->pt_smooth_factor = 192; + ra->pt_stop_count = 0; + ra->pt_pre_rate = 0; + ra->pt_pre_rssi = 0; + ra->pt_mode_ss = 0; + ra->ra_stage = 0; +} + struct rtl8xxxu_fileops rtl8188eu_fops = { .identify_chip = rtl8188eu_identify_chip, .parse_efuse = rtl8188eu_parse_efuse, @@ -1258,7 +1857,7 @@ struct rtl8xxxu_fileops rtl8188eu_fops = { .disable_rf = rtl8188e_disable_rf, .usb_quirks = rtl8188e_usb_quirks, .set_tx_power = rtl8188f_set_tx_power, - .update_rate_mask = rtl8xxxu_gen2_update_rate_mask, + .update_rate_mask = rtl8188e_update_rate_mask, .report_connect = rtl8xxxu_gen2_report_connect, .fill_txdesc = rtl8xxxu_fill_txdesc_v3, .set_crystal_cap = rtl8188f_set_crystal_cap, diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c index daf70a6bc380..5b969759859c 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c @@ -3982,7 +3982,25 @@ static int rtl8xxxu_init_device(struct ieee80211_hw *hw) * Enable TX report and TX report timer for 8723bu/8188eu/... */ if (fops->has_tx_report) { + /* + * The RTL8188EU has two types of TX reports: + * rpt_sel=1: + * One report for one frame. We can use this for frames + * with IEEE80211_TX_CTL_REQ_TX_STATUS. + * rpt_sel=2: + * One report for many frames transmitted over a period + * of time. (This is what REG_TX_REPORT_TIME is for.) The + * report includes the number of frames transmitted + * successfully, and the number of unsuccessful + * transmissions. We use this for software rate control. + * + * Bit 0 of REG_TX_REPORT_CTRL is required for both types. + * Bit 1 (TX_REPORT_CTRL_TIMER_ENABLE) is required for + * type 2. + */ val8 = rtl8xxxu_read8(priv, REG_TX_REPORT_CTRL); + if (priv->rtl_chip == RTL8188E) + val8 |= BIT(0); val8 |= TX_REPORT_CTRL_TIMER_ENABLE; rtl8xxxu_write8(priv, REG_TX_REPORT_CTRL, val8); /* Set MAX RPT MACID */ @@ -4273,6 +4291,9 @@ static int rtl8xxxu_init_device(struct ieee80211_hw *hw) priv->cfo_tracking.crystal_cap = priv->default_crystal_cap; } + if (priv->rtl_chip == RTL8188E) + rtl8188e_ra_info_init_all(&priv->ra_info); + exit: return ret; } @@ -4636,8 +4657,8 @@ static void rtl8xxxu_set_aifs(struct rtl8xxxu_priv *priv, u8 slot_time) } } -static void rtl8xxxu_update_ra_report(struct rtl8xxxu_ra_report *rarpt, - u8 rate, u8 sgi, u8 bw) +void rtl8xxxu_update_ra_report(struct rtl8xxxu_ra_report *rarpt, + u8 rate, u8 sgi, u8 bw) { u8 mcs, nss; @@ -5121,6 +5142,7 @@ rtl8xxxu_fill_txdesc_v3(struct ieee80211_hw *hw, struct ieee80211_hdr *hdr, struct ieee80211_rate *tx_rate = ieee80211_get_tx_rate(hw, tx_info); struct rtl8xxxu_priv *priv = hw->priv; struct device *dev = &priv->udev->dev; + struct rtl8xxxu_ra_info *ra = &priv->ra_info; u8 *qc = ieee80211_get_qos_ctl(hdr); u8 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; u32 rate; @@ -5136,9 +5158,10 @@ rtl8xxxu_fill_txdesc_v3(struct ieee80211_hw *hw, struct ieee80211_hdr *hdr, seq_number = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); if (ieee80211_is_data(hdr->frame_control)) { - rate = DESC_RATE_MCS7; /* TODO: software rate control */ + rate = ra->decision_rate; tx_desc->txdw5 = cpu_to_le32(rate); tx_desc->txdw4 |= cpu_to_le32(TXDESC32_USE_DRIVER_RATE); + tx_desc->txdw4 |= le32_encode_bits(ra->pt_stage, TXDESC32_PT_STAGE_MASK); /* Data/RTS rate FB limit */ tx_desc->txdw5 |= cpu_to_le32(0x0001ff00); } @@ -5177,7 +5200,7 @@ rtl8xxxu_fill_txdesc_v3(struct ieee80211_hw *hw, struct ieee80211_hdr *hdr, if (short_preamble) tx_desc->txdw4 |= cpu_to_le32(TXDESC32_SHORT_PREAMBLE); - if (sgi) + if (sgi && ra->rate_sgi) tx_desc->txdw5 |= cpu_to_le32(TXDESC32_SHORT_GI); /* @@ -5768,6 +5791,44 @@ static void rtl8723bu_handle_c2h(struct rtl8xxxu_priv *priv, schedule_work(&priv->c2hcmd_work); } +static void rtl8188e_c2hcmd_callback(struct work_struct *work) +{ + struct rtl8xxxu_priv *priv = container_of(work, struct rtl8xxxu_priv, c2hcmd_work); + struct device *dev = &priv->udev->dev; + struct sk_buff *skb = NULL; + struct rtl8xxxu_rxdesc16 *rx_desc; + + while (!skb_queue_empty(&priv->c2hcmd_queue)) { + skb = skb_dequeue(&priv->c2hcmd_queue); + + rx_desc = (struct rtl8xxxu_rxdesc16 *)(skb->data - sizeof(struct rtl8xxxu_rxdesc16)); + + switch (rx_desc->rpt_sel) { + case 1: + dev_dbg(dev, "C2H TX report type 1\n"); + + break; + case 2: + dev_dbg(dev, "C2H TX report type 2\n"); + + rtl8188e_handle_ra_tx_report2(priv, skb); + + break; + case 3: + dev_dbg(dev, "C2H USB interrupt report\n"); + + break; + default: + dev_warn(dev, "%s: rpt_sel should not be %d\n", + __func__, rx_desc->rpt_sel); + + break; + } + + dev_kfree_skb(skb); + } +} + int rtl8xxxu_parse_rxdesc16(struct rtl8xxxu_priv *priv, struct sk_buff *skb) { struct ieee80211_hw *hw = priv->hw; @@ -5823,38 +5884,46 @@ int rtl8xxxu_parse_rxdesc16(struct rtl8xxxu_priv *priv, struct sk_buff *skb) skb_pull(skb, sizeof(struct rtl8xxxu_rxdesc16)); - phy_stats = (struct rtl8723au_phy_stats *)skb->data; + if (rx_desc->rpt_sel) { + skb_queue_tail(&priv->c2hcmd_queue, skb); + schedule_work(&priv->c2hcmd_work); + } else { + phy_stats = (struct rtl8723au_phy_stats *)skb->data; - skb_pull(skb, drvinfo_sz + desc_shift); + skb_pull(skb, drvinfo_sz + desc_shift); - skb_trim(skb, pkt_len); + skb_trim(skb, pkt_len); - if (rx_desc->phy_stats) - rtl8xxxu_rx_parse_phystats(priv, rx_status, phy_stats, - rx_desc->rxmcs, (struct ieee80211_hdr *)skb->data, - rx_desc->crc32 || rx_desc->icverr); + if (rx_desc->phy_stats) + rtl8xxxu_rx_parse_phystats( + priv, rx_status, phy_stats, + rx_desc->rxmcs, + (struct ieee80211_hdr *)skb->data, + rx_desc->crc32 || rx_desc->icverr + ); - rx_status->mactime = rx_desc->tsfl; - rx_status->flag |= RX_FLAG_MACTIME_START; + rx_status->mactime = rx_desc->tsfl; + rx_status->flag |= RX_FLAG_MACTIME_START; - if (!rx_desc->swdec) - rx_status->flag |= RX_FLAG_DECRYPTED; - if (rx_desc->crc32) - rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; - if (rx_desc->bw) - rx_status->bw = RATE_INFO_BW_40; + if (!rx_desc->swdec) + rx_status->flag |= RX_FLAG_DECRYPTED; + if (rx_desc->crc32) + rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; + if (rx_desc->bw) + rx_status->bw = RATE_INFO_BW_40; - if (rx_desc->rxht) { - rx_status->encoding = RX_ENC_HT; - rx_status->rate_idx = rx_desc->rxmcs - DESC_RATE_MCS0; - } else { - rx_status->rate_idx = rx_desc->rxmcs; - } + if (rx_desc->rxht) { + rx_status->encoding = RX_ENC_HT; + rx_status->rate_idx = rx_desc->rxmcs - DESC_RATE_MCS0; + } else { + rx_status->rate_idx = rx_desc->rxmcs; + } - rx_status->freq = hw->conf.chandef.chan->center_freq; - rx_status->band = hw->conf.chandef.chan->band; + rx_status->freq = hw->conf.chandef.chan->center_freq; + rx_status->band = hw->conf.chandef.chan->band; - ieee80211_rx_irqsafe(hw, skb); + ieee80211_rx_irqsafe(hw, skb); + } skb = next_skb; if (skb) @@ -6941,7 +7010,6 @@ static int rtl8xxxu_probe(struct usb_interface *interface, spin_lock_init(&priv->rx_urb_lock); INIT_WORK(&priv->rx_urb_wq, rtl8xxxu_rx_urb_work); INIT_DELAYED_WORK(&priv->ra_watchdog, rtl8xxxu_watchdog_callback); - INIT_WORK(&priv->c2hcmd_work, rtl8xxxu_c2hcmd_callback); skb_queue_head_init(&priv->c2hcmd_queue); usb_set_intfdata(interface, hw); @@ -6959,6 +7027,11 @@ static int rtl8xxxu_probe(struct usb_interface *interface, hw->wiphy->available_antennas_tx = BIT(priv->tx_paths) - 1; hw->wiphy->available_antennas_rx = BIT(priv->rx_paths) - 1; + if (priv->rtl_chip == RTL8188E) + INIT_WORK(&priv->c2hcmd_work, rtl8188e_c2hcmd_callback); + else + INIT_WORK(&priv->c2hcmd_work, rtl8xxxu_c2hcmd_callback); + ret = rtl8xxxu_read_efuse(priv); if (ret) { dev_err(&udev->dev, "Fatal - failed to read EFuse\n");