From patchwork Sun May 8 05:24:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryder Lee X-Patchwork-Id: 570918 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 CF4EEC433F5 for ; Sun, 8 May 2022 05:25:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231288AbiEHF3D (ORCPT ); Sun, 8 May 2022 01:29:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231345AbiEHF2z (ORCPT ); Sun, 8 May 2022 01:28:55 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F13CF65C0 for ; Sat, 7 May 2022 22:25:01 -0700 (PDT) X-UUID: 3b1ae48295404b5890ac7e89fae4398c-20220508 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4, REQID:33f148e4-48a2-4ce9-b235-9beff264479d, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-20,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,AC TION:release,TS:-20 X-CID-META: VersionHash:faefae9, CLOUDID:0240f9b2-56b5-4c9e-8d83-0070b288eb6a, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,File:nil,QS:0,BEC:nil X-UUID: 3b1ae48295404b5890ac7e89fae4398c-20220508 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 728484064; Sun, 08 May 2022 13:24:57 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Sun, 8 May 2022 13:24:56 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sun, 8 May 2022 13:24:55 +0800 From: Ryder Lee To: Felix Fietkau CC: Lorenzo Bianconi , Shayne Chen , Evelyn Tsai , , , "Ryder Lee" Subject: [PATCH v2 1/2] mt76: mt7915: improve error handling for fw_debug knobs Date: Sun, 8 May 2022 13:24:53 +0800 Message-ID: <210119c0737d72aa049c113dac48e22a4d84d689.1651983999.git.ryder.lee@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org In case fw.debug_wm/wa might be unavailable. Signed-off-by: Ryder Lee --- changes since v2: - add exception state and split original patch into two pieces. --- .../wireless/mediatek/mt76/mt7915/debugfs.c | 53 +++++++++++-------- .../wireless/mediatek/mt76/mt7915/mt7915.h | 9 ++-- 2 files changed, 37 insertions(+), 25 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c index 875f17ff33a9..656f3ffccf4b 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c @@ -447,20 +447,20 @@ mt7915_fw_debug_wm_set(void *data, u64 val) bool tx, rx, en; int ret; - dev->fw_debug_wm = val ? MCU_FW_LOG_TO_HOST : 0; + dev->fw.debug_wm = val ? MCU_FW_LOG_TO_HOST : 0; - if (dev->fw_debug_bin) + if (dev->fw.debug_bin) val = 16; else - val = dev->fw_debug_wm; + val = dev->fw.debug_wm; - tx = dev->fw_debug_wm || (dev->fw_debug_bin & BIT(1)); - rx = dev->fw_debug_wm || (dev->fw_debug_bin & BIT(2)); - en = dev->fw_debug_wm || (dev->fw_debug_bin & BIT(0)); + tx = dev->fw.debug_wm || (dev->fw.debug_bin & BIT(1)); + rx = dev->fw.debug_wm || (dev->fw.debug_bin & BIT(2)); + en = dev->fw.debug_wm || (dev->fw.debug_bin & BIT(0)); ret = mt7915_mcu_fw_log_2_host(dev, MCU_FW_LOG_WM, val); if (ret) - return ret; + goto out; for (debug = DEBUG_TXCMD; debug <= DEBUG_RPT_RX; debug++) { if (debug == DEBUG_RPT_RX) @@ -470,16 +470,20 @@ mt7915_fw_debug_wm_set(void *data, u64 val) ret = mt7915_mcu_fw_dbg_ctrl(dev, debug, val); if (ret) - return ret; + goto out; } /* WM CPU info record control */ mt76_clear(dev, MT_CPU_UTIL_CTRL, BIT(0)); - mt76_wr(dev, MT_DIC_CMD_REG_CMD, BIT(2) | BIT(13) | !dev->fw_debug_wm); + mt76_wr(dev, MT_DIC_CMD_REG_CMD, BIT(2) | BIT(13) | !dev->fw.debug_wm); mt76_wr(dev, MT_MCU_WM_CIRQ_IRQ_MASK_CLR_ADDR, BIT(5)); mt76_wr(dev, MT_MCU_WM_CIRQ_IRQ_SOFT_ADDR, BIT(5)); - return 0; +out: + if (ret) + dev->fw.debug_wm = 0; + + return ret; } static int @@ -487,7 +491,7 @@ mt7915_fw_debug_wm_get(void *data, u64 *val) { struct mt7915_dev *dev = data; - *val = dev->fw_debug_wm; + *val = dev->fw.debug_wm; return 0; } @@ -501,14 +505,19 @@ mt7915_fw_debug_wa_set(void *data, u64 val) struct mt7915_dev *dev = data; int ret; - dev->fw_debug_wa = val ? MCU_FW_LOG_TO_HOST : 0; + dev->fw.debug_wa = val ? MCU_FW_LOG_TO_HOST : 0; + + ret = mt7915_mcu_fw_log_2_host(dev, MCU_FW_LOG_WA, dev->fw.debug_wa); + if (ret) + goto out; - ret = mt7915_mcu_fw_log_2_host(dev, MCU_FW_LOG_WA, dev->fw_debug_wa); + ret = mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(SET), + MCU_WA_PARAM_PDMA_RX, !!dev->fw.debug_wa, 0); +out: if (ret) - return ret; + dev->fw.debug_wa = 0; - return mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(SET), MCU_WA_PARAM_PDMA_RX, - !!dev->fw_debug_wa, 0); + return ret; } static int @@ -516,7 +525,7 @@ mt7915_fw_debug_wa_get(void *data, u64 *val) { struct mt7915_dev *dev = data; - *val = dev->fw_debug_wa; + *val = dev->fw.debug_wa; return 0; } @@ -563,11 +572,11 @@ mt7915_fw_debug_bin_set(void *data, u64 val) if (!dev->relay_fwlog) return -ENOMEM; - dev->fw_debug_bin = val; + dev->fw.debug_bin = val; relay_reset(dev->relay_fwlog); - return mt7915_fw_debug_wm_set(dev, dev->fw_debug_wm); + return mt7915_fw_debug_wm_set(dev, dev->fw.debug_wm); } static int @@ -575,7 +584,7 @@ mt7915_fw_debug_bin_get(void *data, u64 *val) { struct mt7915_dev *dev = data; - *val = dev->fw_debug_bin; + *val = dev->fw.debug_bin; return 0; } @@ -588,7 +597,7 @@ mt7915_fw_util_wm_show(struct seq_file *file, void *data) { struct mt7915_dev *dev = file->private; - if (dev->fw_debug_wm) { + if (dev->fw.debug_wm) { seq_printf(file, "Busy: %u%% Peak busy: %u%%\n", mt76_rr(dev, MT_CPU_UTIL_BUSY_PCT), mt76_rr(dev, MT_CPU_UTIL_PEAK_BUSY_PCT)); @@ -607,7 +616,7 @@ mt7915_fw_util_wa_show(struct seq_file *file, void *data) { struct mt7915_dev *dev = file->private; - if (dev->fw_debug_wa) + if (dev->fw.debug_wa) return mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(QUERY), MCU_WA_PARAM_CPU_UTIL, 0, 0); diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h index 42e195dded01..72be5bceeb50 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h @@ -311,15 +311,18 @@ struct mt7915_dev { bool flash_mode; bool muru_debug; bool ibf; - u8 fw_debug_wm; - u8 fw_debug_wa; - u8 fw_debug_bin; struct dentry *debugfs_dir; struct rchan *relay_fwlog; void *cal; + struct { + u8 debug_wm; + u8 debug_wa; + u8 debug_bin; + } fw; + struct { u8 table_mask; u8 n_agrt;