From patchwork Tue Apr 4 20:03:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryder Lee X-Patchwork-Id: 670265 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 D6078C6FD1D for ; Tue, 4 Apr 2023 20:03:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232313AbjDDUDu (ORCPT ); Tue, 4 Apr 2023 16:03:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52120 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229507AbjDDUDt (ORCPT ); Tue, 4 Apr 2023 16:03:49 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7CB34E52 for ; Tue, 4 Apr 2023 13:03:43 -0700 (PDT) X-UUID: c84849f6d32311eda9a90f0bb45854f4-20230405 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=n9XMvy51OEqtdAE/QuBmwe2k1vj/GmgHQkocayT1rVs=; b=nG89DXsX/NVVzJrwxFLBmfwODjq3Esq/3Fqvbcsd6uSMhtrm2Q6xI3PgeYuSCxPB+Qr5bdrmv4ljaFRTZ5NMOqEv6cyXLyiia0dOSm3H3Z2FSzRGRwvkGnV2XChWpTGvmOUrJDNuFOQZ/uGEu1CeCQh820qOur5yp3xSs86ZZL0=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.22, REQID:8f2b427b-6aa9-4117-9f73-d4ef832c3abb, IP:0, U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:120426c, CLOUDID:99e1ccf7-ddba-41c3-91d9-10eeade8eac7, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-UUID: c84849f6d32311eda9a90f0bb45854f4-20230405 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 585037126; Wed, 05 Apr 2023 04:03:35 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Wed, 5 Apr 2023 04:03:34 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Wed, 5 Apr 2023 04:03:34 +0800 From: Ryder Lee To: Felix Fietkau , CC: Lorenzo Bianconi , Shayne Chen , Evelyn Tsai , , Bo Jiao , Ryder Lee Subject: [PATCH 1/3] wifi: mt76: mt7996: enable full system reset support Date: Wed, 5 Apr 2023 04:03:30 +0800 Message-ID: <6756ddde5aaaf29db4f62264bab7f28bb539b26f.1680638324.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 From: Bo Jiao Add mt7996_reset() and refactor mt7996_mac_reset_work() to support full system recovery. Signed-off-by: Bo Jiao Signed-off-by: Ryder Lee --- .../net/wireless/mediatek/mt76/mt7996/dma.c | 64 ++++ .../net/wireless/mediatek/mt76/mt7996/init.c | 11 +- .../net/wireless/mediatek/mt76/mt7996/mac.c | 284 +++++++++++++++--- .../net/wireless/mediatek/mt76/mt7996/main.c | 18 +- .../net/wireless/mediatek/mt76/mt7996/mcu.c | 22 +- .../net/wireless/mediatek/mt76/mt7996/mmio.c | 7 +- .../wireless/mediatek/mt76/mt7996/mt7996.h | 17 +- .../net/wireless/mediatek/mt76/mt7996/regs.h | 13 +- 8 files changed, 365 insertions(+), 71 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/dma.c b/drivers/net/wireless/mediatek/mt76/mt7996/dma.c index c09fe4274935..534143465d9b 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/dma.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/dma.c @@ -352,6 +352,70 @@ int mt7996_dma_init(struct mt7996_dev *dev) return 0; } +void mt7996_dma_reset(struct mt7996_dev *dev, bool force) +{ + struct mt76_phy *phy2 = dev->mt76.phys[MT_BAND1]; + struct mt76_phy *phy3 = dev->mt76.phys[MT_BAND2]; + u32 hif1_ofs = MT_WFDMA0_PCIE1(0) - MT_WFDMA0(0); + int i; + + mt76_clear(dev, MT_WFDMA0_GLO_CFG, + MT_WFDMA0_GLO_CFG_TX_DMA_EN | + MT_WFDMA0_GLO_CFG_RX_DMA_EN); + + if (dev->hif2) + mt76_clear(dev, MT_WFDMA0_GLO_CFG + hif1_ofs, + MT_WFDMA0_GLO_CFG_TX_DMA_EN | + MT_WFDMA0_GLO_CFG_RX_DMA_EN); + + usleep_range(1000, 2000); + + for (i = 0; i < __MT_TXQ_MAX; i++) { + mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[i], true); + if (phy2) + mt76_queue_tx_cleanup(dev, phy2->q_tx[i], true); + if (phy3) + mt76_queue_tx_cleanup(dev, phy3->q_tx[i], true); + } + + for (i = 0; i < __MT_MCUQ_MAX; i++) + mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[i], true); + + mt76_for_each_q_rx(&dev->mt76, i) + mt76_queue_rx_cleanup(dev, &dev->mt76.q_rx[i]); + + mt76_tx_status_check(&dev->mt76, true); + + /* reset wfsys */ + if (force) + mt7996_wfsys_reset(dev); + + mt7996_dma_disable(dev, force); + + /* reset hw queues */ + for (i = 0; i < __MT_TXQ_MAX; i++) { + mt76_queue_reset(dev, dev->mphy.q_tx[i]); + if (phy2) + mt76_queue_reset(dev, phy2->q_tx[i]); + if (phy3) + mt76_queue_reset(dev, phy3->q_tx[i]); + } + + for (i = 0; i < __MT_MCUQ_MAX; i++) + mt76_queue_reset(dev, dev->mt76.q_mcu[i]); + + mt76_for_each_q_rx(&dev->mt76, i) { + mt76_queue_reset(dev, &dev->mt76.q_rx[i]); + } + + mt76_tx_status_check(&dev->mt76, true); + + mt76_for_each_q_rx(&dev->mt76, i) + mt76_queue_rx_reset(dev, i); + + mt7996_dma_enable(dev); +} + void mt7996_dma_cleanup(struct mt7996_dev *dev) { mt7996_dma_disable(dev, true); diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/init.c b/drivers/net/wireless/mediatek/mt76/mt7996/init.c index 946da93eed32..76501e42cd8a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/init.c @@ -99,9 +99,8 @@ static void mt7996_led_set_brightness(struct led_classdev *led_cdev, mt7996_led_set_config(led_cdev, 0xff, 0); } -static void -mt7996_init_txpower(struct mt7996_dev *dev, - struct ieee80211_supported_band *sband) +void mt7996_init_txpower(struct mt7996_dev *dev, + struct ieee80211_supported_band *sband) { int i, nss = hweight8(dev->mphy.antenna_mask); int nss_delta = mt76_tx_power_nss_delta(nss); @@ -250,7 +249,7 @@ mt7996_mac_init_band(struct mt7996_dev *dev, u8 band) mt76_rmw(dev, MT_WTBLOFF_RSCR(band), mask, set); } -static void mt7996_mac_init(struct mt7996_dev *dev) +void mt7996_mac_init(struct mt7996_dev *dev) { #define HIF_TXD_V2_1 4 int i; @@ -284,7 +283,7 @@ static void mt7996_mac_init(struct mt7996_dev *dev) mt7996_mac_init_band(dev, i); } -static int mt7996_txbf_init(struct mt7996_dev *dev) +int mt7996_txbf_init(struct mt7996_dev *dev) { int ret; @@ -886,6 +885,8 @@ int mt7996_register_device(struct mt7996_dev *dev) if (ret) return ret; + dev->recovery.hw_init_done = true; + return mt7996_init_debugfs(&dev->phy); } diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c index 3c3506c7c87a..f5c24985b905 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c @@ -1706,7 +1706,7 @@ mt7996_wait_reset_state(struct mt7996_dev *dev, u32 state) bool ret; ret = wait_event_timeout(dev->reset_wait, - (READ_ONCE(dev->reset_state) & state), + (READ_ONCE(dev->recovery.state) & state), MT7996_RESET_TIMEOUT); WARN(!ret, "Timeout waiting for MCU reset state %x\n", state); @@ -1755,68 +1755,207 @@ mt7996_update_beacons(struct mt7996_dev *dev) mt7996_update_vif_beacon, phy3->hw); } -static void -mt7996_dma_reset(struct mt7996_dev *dev) +void mt7996_tx_token_put(struct mt7996_dev *dev) { - struct mt76_phy *phy2 = dev->mt76.phys[MT_BAND1]; - struct mt76_phy *phy3 = dev->mt76.phys[MT_BAND2]; - u32 hif1_ofs = MT_WFDMA0_PCIE1(0) - MT_WFDMA0(0); - int i; + struct mt76_txwi_cache *txwi; + int id; + + spin_lock_bh(&dev->mt76.token_lock); + idr_for_each_entry(&dev->mt76.token, txwi, id) { + mt7996_txwi_free(dev, txwi, NULL, NULL); + dev->mt76.token_count--; + } + spin_unlock_bh(&dev->mt76.token_lock); + idr_destroy(&dev->mt76.token); +} + +static int +mt7996_mac_restart(struct mt7996_dev *dev) +{ + struct mt7996_phy *phy2, *phy3; + struct mt76_dev *mdev = &dev->mt76; + int i, ret; - mt76_clear(dev, MT_WFDMA0_GLO_CFG, - MT_WFDMA0_GLO_CFG_TX_DMA_EN | - MT_WFDMA0_GLO_CFG_RX_DMA_EN); + phy2 = mt7996_phy2(dev); + phy3 = mt7996_phy3(dev); - if (dev->hif2) - mt76_clear(dev, MT_WFDMA0_GLO_CFG + hif1_ofs, - MT_WFDMA0_GLO_CFG_TX_DMA_EN | - MT_WFDMA0_GLO_CFG_RX_DMA_EN); + if (dev->hif2) { + mt76_wr(dev, MT_INT1_MASK_CSR, 0x0); + mt76_wr(dev, MT_INT1_SOURCE_CSR, ~0); + } - usleep_range(1000, 2000); + if (dev_is_pci(mdev->dev)) { + mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0); + if (dev->hif2) + mt76_wr(dev, MT_PCIE1_MAC_INT_ENABLE, 0x0); + } - for (i = 0; i < __MT_TXQ_MAX; i++) { - mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[i], true); - if (phy2) - mt76_queue_tx_cleanup(dev, phy2->q_tx[i], true); - if (phy3) - mt76_queue_tx_cleanup(dev, phy3->q_tx[i], true); + set_bit(MT76_RESET, &dev->mphy.state); + set_bit(MT76_MCU_RESET, &dev->mphy.state); + wake_up(&dev->mt76.mcu.wait); + if (phy2) { + set_bit(MT76_RESET, &phy2->mt76->state); + set_bit(MT76_MCU_RESET, &phy2->mt76->state); + } + if (phy3) { + set_bit(MT76_RESET, &phy3->mt76->state); + set_bit(MT76_MCU_RESET, &phy3->mt76->state); } - for (i = 0; i < __MT_MCUQ_MAX; i++) - mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[i], true); + /* lock/unlock all queues to ensure that no tx is pending */ + mt76_txq_schedule_all(&dev->mphy); + if (phy2) + mt76_txq_schedule_all(phy2->mt76); + if (phy3) + mt76_txq_schedule_all(phy3->mt76); - mt76_for_each_q_rx(&dev->mt76, i) - mt76_queue_rx_reset(dev, i); + /* disable all tx/rx napi */ + mt76_worker_disable(&dev->mt76.tx_worker); + mt76_for_each_q_rx(mdev, i) { + if (mdev->q_rx[i].ndesc) + napi_disable(&dev->mt76.napi[i]); + } + napi_disable(&dev->mt76.tx_napi); + + /* token reinit */ + mt7996_tx_token_put(dev); + idr_init(&dev->mt76.token); + + mt7996_dma_reset(dev, true); + + local_bh_disable(); + mt76_for_each_q_rx(mdev, i) { + if (mdev->q_rx[i].ndesc) { + napi_enable(&dev->mt76.napi[i]); + napi_schedule(&dev->mt76.napi[i]); + } + } + local_bh_enable(); + clear_bit(MT76_MCU_RESET, &dev->mphy.state); + clear_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); + + mt76_wr(dev, MT_INT_MASK_CSR, dev->mt76.mmio.irqmask); + mt76_wr(dev, MT_INT_SOURCE_CSR, ~0); + if (dev->hif2) { + mt76_wr(dev, MT_INT1_MASK_CSR, dev->mt76.mmio.irqmask); + mt76_wr(dev, MT_INT1_SOURCE_CSR, ~0); + } + if (dev_is_pci(mdev->dev)) { + mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff); + if (dev->hif2) + mt76_wr(dev, MT_PCIE1_MAC_INT_ENABLE, 0xff); + } + + /* load firmware */ + ret = mt7996_mcu_init_firmware(dev); + if (ret) + goto out; + + /* set the necessary init items */ + ret = mt7996_mcu_set_eeprom(dev); + if (ret) + goto out; + + mt7996_mac_init(dev); + mt7996_init_txpower(dev, &dev->mphy.sband_2g.sband); + mt7996_init_txpower(dev, &dev->mphy.sband_5g.sband); + mt7996_init_txpower(dev, &dev->mphy.sband_6g.sband); + ret = mt7996_txbf_init(dev); + + if (test_bit(MT76_STATE_RUNNING, &dev->mphy.state)) { + ret = mt7996_run(dev->mphy.hw); + if (ret) + goto out; + } - mt76_tx_status_check(&dev->mt76, true); + if (phy2 && test_bit(MT76_STATE_RUNNING, &phy2->mt76->state)) { + ret = mt7996_run(phy2->mt76->hw); + if (ret) + goto out; + } - /* re-init prefetch settings after reset */ - mt7996_dma_prefetch(dev); + if (phy3 && test_bit(MT76_STATE_RUNNING, &phy3->mt76->state)) { + ret = mt7996_run(phy3->mt76->hw); + if (ret) + goto out; + } + +out: + /* reset done */ + clear_bit(MT76_RESET, &dev->mphy.state); + if (phy2) + clear_bit(MT76_RESET, &phy2->mt76->state); + if (phy3) + clear_bit(MT76_RESET, &phy3->mt76->state); - mt76_set(dev, MT_WFDMA0_GLO_CFG, - MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN); + local_bh_disable(); + napi_enable(&dev->mt76.tx_napi); + napi_schedule(&dev->mt76.tx_napi); + local_bh_enable(); - if (dev->hif2) - mt76_set(dev, MT_WFDMA0_GLO_CFG + hif1_ofs, - MT_WFDMA0_GLO_CFG_TX_DMA_EN | - MT_WFDMA0_GLO_CFG_RX_DMA_EN); + mt76_worker_enable(&dev->mt76.tx_worker); + return ret; } -void mt7996_tx_token_put(struct mt7996_dev *dev) +static void +mt7996_mac_full_reset(struct mt7996_dev *dev) { - struct mt76_txwi_cache *txwi; - int id; + struct mt7996_phy *phy2, *phy3; + int i; - spin_lock_bh(&dev->mt76.token_lock); - idr_for_each_entry(&dev->mt76.token, txwi, id) { - mt7996_txwi_free(dev, txwi, NULL, NULL); - dev->mt76.token_count--; + phy2 = mt7996_phy2(dev); + phy3 = mt7996_phy3(dev); + dev->recovery.hw_full_reset = true; + + wake_up(&dev->mt76.mcu.wait); + ieee80211_stop_queues(mt76_hw(dev)); + if (phy2) + ieee80211_stop_queues(phy2->mt76->hw); + if (phy3) + ieee80211_stop_queues(phy3->mt76->hw); + + cancel_delayed_work_sync(&dev->mphy.mac_work); + if (phy2) + cancel_delayed_work_sync(&phy2->mt76->mac_work); + if (phy3) + cancel_delayed_work_sync(&phy3->mt76->mac_work); + + mutex_lock(&dev->mt76.mutex); + for (i = 0; i < 10; i++) { + if (!mt7996_mac_restart(dev)) + break; } - spin_unlock_bh(&dev->mt76.token_lock); - idr_destroy(&dev->mt76.token); + mutex_unlock(&dev->mt76.mutex); + + if (i == 10) + dev_err(dev->mt76.dev, "chip full reset failed\n"); + + ieee80211_restart_hw(mt76_hw(dev)); + if (phy2) + ieee80211_restart_hw(phy2->mt76->hw); + if (phy3) + ieee80211_restart_hw(phy3->mt76->hw); + + ieee80211_wake_queues(mt76_hw(dev)); + if (phy2) + ieee80211_wake_queues(phy2->mt76->hw); + if (phy3) + ieee80211_wake_queues(phy3->mt76->hw); + + dev->recovery.hw_full_reset = false; + ieee80211_queue_delayed_work(mt76_hw(dev), + &dev->mphy.mac_work, + MT7996_WATCHDOG_TIME); + if (phy2) + ieee80211_queue_delayed_work(phy2->mt76->hw, + &phy2->mt76->mac_work, + MT7996_WATCHDOG_TIME); + if (phy3) + ieee80211_queue_delayed_work(phy3->mt76->hw, + &phy3->mt76->mac_work, + MT7996_WATCHDOG_TIME); } -/* system error recovery */ void mt7996_mac_reset_work(struct work_struct *work) { struct mt7996_phy *phy2, *phy3; @@ -1827,9 +1966,36 @@ void mt7996_mac_reset_work(struct work_struct *work) phy2 = mt7996_phy2(dev); phy3 = mt7996_phy3(dev); - if (!(READ_ONCE(dev->reset_state) & MT_MCU_CMD_STOP_DMA)) + /* chip full reset */ + if (dev->recovery.restart) { + /* disable WA/WM WDT */ + mt76_clear(dev, MT_WFDMA0_MCU_HOST_INT_ENA, + MT_MCU_CMD_WDT_MASK); + + if (READ_ONCE(dev->recovery.state) & MT_MCU_CMD_WA_WDT) + dev->recovery.wa_reset_count++; + else + dev->recovery.wm_reset_count++; + + mt7996_mac_full_reset(dev); + + /* enable mcu irq */ + mt7996_irq_enable(dev, MT_INT_MCU_CMD); + mt7996_irq_disable(dev, 0); + + /* enable WA/WM WDT */ + mt76_set(dev, MT_WFDMA0_MCU_HOST_INT_ENA, MT_MCU_CMD_WDT_MASK); + + dev->recovery.state = MT_MCU_CMD_NORMAL_STATE; + dev->recovery.restart = false; return; + } + if (!(READ_ONCE(dev->recovery.state) & MT_MCU_CMD_STOP_DMA)) + return; + + dev_info(dev->mt76.dev,"\n%s L1 SER recovery start.", + wiphy_name(dev->mt76.hw->wiphy)); ieee80211_stop_queues(mt76_hw(dev)); if (phy2) ieee80211_stop_queues(phy2->mt76->hw); @@ -1858,7 +2024,7 @@ void mt7996_mac_reset_work(struct work_struct *work) mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_DMA_STOPPED); if (mt7996_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) { - mt7996_dma_reset(dev); + mt7996_dma_reset(dev, false); mt7996_tx_token_put(dev); idr_init(&dev->mt76.token); @@ -1913,6 +2079,32 @@ void mt7996_mac_reset_work(struct work_struct *work) ieee80211_queue_delayed_work(phy3->mt76->hw, &phy3->mt76->mac_work, MT7996_WATCHDOG_TIME); + dev_info(dev->mt76.dev,"\n%s L1 SER recovery completed.", + wiphy_name(dev->mt76.hw->wiphy)); +} + +void mt7996_reset(struct mt7996_dev *dev) +{ + if (!dev->recovery.hw_init_done) + return; + + if (dev->recovery.hw_full_reset) + return; + + /* wm/wa exception: do full recovery */ + if (READ_ONCE(dev->recovery.state) & MT_MCU_CMD_WDT_MASK) { + dev->recovery.restart = true; + dev_info(dev->mt76.dev, + "%s indicated firmware crash, attempting recovery\n", + wiphy_name(dev->mt76.hw->wiphy)); + + mt7996_irq_disable(dev, MT_INT_MCU_CMD); + queue_work(dev->mt76.wq, &dev->reset_work); + return; + } + + queue_work(dev->mt76.wq, &dev->reset_work); + wake_up(&dev->reset_wait); } void mt7996_mac_update_stats(struct mt7996_phy *phy) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/main.c b/drivers/net/wireless/mediatek/mt76/mt7996/main.c index 3e4da0350d96..67d02d30456e 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/main.c @@ -22,17 +22,13 @@ static bool mt7996_dev_running(struct mt7996_dev *dev) return phy && test_bit(MT76_STATE_RUNNING, &phy->mt76->state); } -static int mt7996_start(struct ieee80211_hw *hw) +int mt7996_run(struct ieee80211_hw *hw) { struct mt7996_dev *dev = mt7996_hw_dev(hw); struct mt7996_phy *phy = mt7996_hw_phy(hw); bool running; int ret; - flush_work(&dev->init_work); - - mutex_lock(&dev->mt76.mutex); - running = mt7996_dev_running(dev); if (!running) { ret = mt7996_mcu_set_hdr_trans(dev, true); @@ -63,6 +59,18 @@ static int mt7996_start(struct ieee80211_hw *hw) mt7996_mac_reset_counters(phy); out: + return ret; +} + +static int mt7996_start(struct ieee80211_hw *hw) +{ + struct mt7996_dev *dev = mt7996_hw_dev(hw); + int ret; + + flush_work(&dev->init_work); + + mutex_lock(&dev->mt76.mutex); + ret = mt7996_run(hw); mutex_unlock(&dev->mt76.mutex); return ret; diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c index 8ad51cbfdbe8..a48522025867 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c @@ -2523,17 +2523,10 @@ mt7996_mcu_init_rx_airtime(struct mt7996_dev *dev) MCU_WM_UNI_CMD(VOW), true); } -int mt7996_mcu_init(struct mt7996_dev *dev) +int mt7996_mcu_init_firmware(struct mt7996_dev *dev) { - static const struct mt76_mcu_ops mt7996_mcu_ops = { - .headroom = sizeof(struct mt76_connac2_mcu_txd), /* reuse */ - .mcu_skb_send_msg = mt7996_mcu_send_message, - .mcu_parse_response = mt7996_mcu_parse_response, - }; int ret; - dev->mt76.mcu_ops = &mt7996_mcu_ops; - /* force firmware operation mode into normal state, * which should be set before firmware download stage. */ @@ -2574,6 +2567,19 @@ int mt7996_mcu_init(struct mt7996_dev *dev) MCU_WA_PARAM_RED, 0, 0); } +int mt7996_mcu_init(struct mt7996_dev *dev) +{ + static const struct mt76_mcu_ops mt7996_mcu_ops = { + .headroom = sizeof(struct mt76_connac2_mcu_txd), /* reuse */ + .mcu_skb_send_msg = mt7996_mcu_send_message, + .mcu_parse_response = mt7996_mcu_parse_response, + }; + + dev->mt76.mcu_ops = &mt7996_mcu_ops; + + return mt7996_mcu_init_firmware(dev); +} + void mt7996_mcu_exit(struct mt7996_dev *dev) { mt7996_mcu_restart(&dev->mt76); diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c index 902370a2a639..536e8dd0edca 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c @@ -289,10 +289,9 @@ static void mt7996_irq_tasklet(struct tasklet_struct *t) u32 val = mt76_rr(dev, MT_MCU_CMD); mt76_wr(dev, MT_MCU_CMD, val); - if (val & MT_MCU_CMD_ERROR_MASK) { - dev->reset_state = val; - ieee80211_queue_work(mt76_hw(dev), &dev->reset_work); - wake_up(&dev->reset_wait); + if (val & (MT_MCU_CMD_ERROR_MASK | MT_MCU_CMD_WDT_MASK)) { + dev->recovery.state = val; + mt7996_reset(dev); } } } diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h index 018dfd2b36b0..45071f0dc2fe 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h @@ -253,7 +253,14 @@ struct mt7996_dev { struct work_struct rc_work; struct work_struct reset_work; wait_queue_head_t reset_wait; - u32 reset_state; + struct { + u32 state; + u32 wa_reset_count; + u32 wm_reset_count; + bool hw_full_reset:1; + bool hw_init_done:1; + bool restart:1; + } recovery; struct list_head sta_rc_list; struct list_head sta_poll_list; @@ -386,9 +393,16 @@ int mt7996_eeprom_get_target_power(struct mt7996_dev *dev, struct ieee80211_channel *chan); s8 mt7996_eeprom_get_power_delta(struct mt7996_dev *dev, int band); int mt7996_dma_init(struct mt7996_dev *dev); +void mt7996_dma_reset(struct mt7996_dev *dev, bool force); void mt7996_dma_prefetch(struct mt7996_dev *dev); void mt7996_dma_cleanup(struct mt7996_dev *dev); +void mt7996_init_txpower(struct mt7996_dev *dev, + struct ieee80211_supported_band *sband); +int mt7996_txbf_init(struct mt7996_dev *dev); +void mt7996_reset(struct mt7996_dev *dev); +int mt7996_run(struct ieee80211_hw *hw); int mt7996_mcu_init(struct mt7996_dev *dev); +int mt7996_mcu_init_firmware(struct mt7996_dev *dev); int mt7996_mcu_twt_agrt_update(struct mt7996_dev *dev, struct mt7996_vif *mvif, struct mt7996_twt_flow *flow, @@ -479,6 +493,7 @@ static inline void mt7996_irq_disable(struct mt7996_dev *dev, u32 mask) mt76_set_irq_mask(&dev->mt76, MT_INT_MASK_CSR, mask, 0); } +void mt7996_mac_init(struct mt7996_dev *dev); u32 mt7996_mac_wtbl_lmac_addr(struct mt7996_dev *dev, u16 wcid, u8 dw); bool mt7996_mac_wtbl_update(struct mt7996_dev *dev, int idx, u32 mask); void mt7996_mac_reset_counters(struct mt7996_phy *phy); diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/regs.h b/drivers/net/wireless/mediatek/mt76/mt7996/regs.h index 7a28cae34e34..5ba74b49d65d 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/regs.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/regs.h @@ -317,6 +317,8 @@ enum base_rev { #define MT_WFDMA0_RX_INT_PCIE_SEL MT_WFDMA0(0x154) #define MT_WFDMA0_RX_INT_SEL_RING3 BIT(3) +#define MT_WFDMA0_MCU_HOST_INT_ENA MT_WFDMA0(0x1f4) + #define MT_WFDMA0_GLO_CFG MT_WFDMA0(0x208) #define MT_WFDMA0_GLO_CFG_TX_DMA_EN BIT(0) #define MT_WFDMA0_GLO_CFG_RX_DMA_EN BIT(2) @@ -444,6 +446,10 @@ enum base_rev { #define MT_MCU_CMD_NORMAL_STATE BIT(5) #define MT_MCU_CMD_ERROR_MASK GENMASK(5, 1) +#define MT_MCU_CMD_WA_WDT BIT(31) +#define MT_MCU_CMD_WM_WDT BIT(30) +#define MT_MCU_CMD_WDT_MASK GENMASK(31, 30) + /* l1/l2 remap */ #define MT_HIF_REMAP_L1 0x155024 #define MT_HIF_REMAP_L1_MASK GENMASK(31, 16) @@ -468,7 +474,10 @@ enum base_rev { #define MT_INFRA_MCU_END 0x7c3fffff /* FW MODE SYNC */ -#define MT_SWDEF_MODE 0x9143c +#define MT_SWDEF_BASE 0x00401400 + +#define MT_SWDEF(ofs) (MT_SWDEF_BASE + (ofs)) +#define MT_SWDEF_MODE MT_SWDEF(0x3c) #define MT_SWDEF_NORMAL_MODE 0 /* LED */ @@ -506,7 +515,7 @@ enum base_rev { #define MT_TOP_MISC_FW_STATE GENMASK(2, 0) #define MT_HW_REV 0x70010204 -#define MT_WF_SUBSYS_RST 0x70002600 +#define MT_WF_SUBSYS_RST 0x70028600 /* PCIE MAC */ #define MT_PCIE_MAC_BASE 0x74030000 From patchwork Tue Apr 4 20:03:32 2023 Content-Type: text/plain; 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Wed, 05 Apr 2023 04:03:37 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Wed, 5 Apr 2023 04:03:35 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Wed, 5 Apr 2023 04:03:35 +0800 From: Ryder Lee To: Felix Fietkau , CC: Lorenzo Bianconi , Shayne Chen , Evelyn Tsai , , Ryder Lee Subject: [PATCH 3/3] wifi: mt76: mt7996: enable coredump support Date: Wed, 5 Apr 2023 04:03:32 +0800 Message-ID: X-Mailer: git-send-email 2.18.0 In-Reply-To: <6756ddde5aaaf29db4f62264bab7f28bb539b26f.1680638324.git.ryder.lee@mediatek.com> References: <6756ddde5aaaf29db4f62264bab7f28bb539b26f.1680638324.git.ryder.lee@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Host triggered and catastrophic event triggered firmware core dumping for basic firmware issues triage, including state reporting, function calltrace and MCU memory dump. Signed-off-by: Ryder Lee --- .../net/wireless/mediatek/mt76/mt7996/Kconfig | 1 + .../wireless/mediatek/mt76/mt7996/Makefile | 2 + .../wireless/mediatek/mt76/mt7996/coredump.c | 268 ++++++++++++++++++ .../wireless/mediatek/mt76/mt7996/coredump.h | 97 +++++++ .../net/wireless/mediatek/mt76/mt7996/init.c | 10 +- .../net/wireless/mediatek/mt76/mt7996/mac.c | 72 ++++- .../net/wireless/mediatek/mt76/mt7996/mmio.c | 8 + .../wireless/mediatek/mt76/mt7996/mt7996.h | 22 ++ .../net/wireless/mediatek/mt76/mt7996/regs.h | 18 ++ 9 files changed, 496 insertions(+), 2 deletions(-) create mode 100644 drivers/net/wireless/mediatek/mt76/mt7996/coredump.c create mode 100644 drivers/net/wireless/mediatek/mt76/mt7996/coredump.h diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/Kconfig b/drivers/net/wireless/mediatek/mt76/mt7996/Kconfig index 79fb47a73c91..1afa2f662e47 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/Kconfig +++ b/drivers/net/wireless/mediatek/mt76/mt7996/Kconfig @@ -2,6 +2,7 @@ config MT7996E tristate "MediaTek MT7996 (PCIe) support" select MT76_CONNAC_LIB + select WANT_DEV_COREDUMP select RELAY depends on MAC80211 depends on PCI diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/Makefile b/drivers/net/wireless/mediatek/mt76/mt7996/Makefile index bcb9a3c53149..07c8b555c1ac 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/Makefile +++ b/drivers/net/wireless/mediatek/mt76/mt7996/Makefile @@ -4,3 +4,5 @@ obj-$(CONFIG_MT7996E) += mt7996e.o mt7996e-y := pci.o init.o dma.o eeprom.o main.o mcu.o mac.o \ debugfs.o mmio.o + +mt7996e-$(CONFIG_DEV_COREDUMP) += coredump.o diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/coredump.c b/drivers/net/wireless/mediatek/mt76/mt7996/coredump.c new file mode 100644 index 000000000000..d58024f50fdb --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7996/coredump.c @@ -0,0 +1,268 @@ +// SPDX-License-Identifier: ISC +/* Copyright (C) 2023 MediaTek Inc. */ + +#include +#include +#include +#include +#include "coredump.h" + +static bool coredump_memdump; +module_param(coredump_memdump, bool, 0644); +MODULE_PARM_DESC(coredump_memdump, "Optional ability to dump firmware memory"); + +static const struct mt7996_mem_region mt7996_mem_regions[] = { + { + .start = 0x00800000, + .len = 0x0004ffff, + .name = "ULM0", + }, + { + .start = 0x00900000, + .len = 0x00037fff, + .name = "ULM1", + }, + { + .start = 0x02200000, + .len = 0x0003ffff, + .name = "ULM2", + }, + { + .start = 0x00400000, + .len = 0x00067fff, + .name = "SRAM", + }, + { + .start = 0xe0000000, + .len = 0x0015ffff, + .name = "CRAM0", + }, + { + .start = 0xe0160000, + .len = 0x0011bfff, + .name = "CRAM1", + }, +}; + +const struct mt7996_mem_region* +mt7996_coredump_get_mem_layout(struct mt7996_dev *dev, u32 *num) +{ + switch (mt76_chip(&dev->mt76)) { + case 0x7990: + case 0x7991: + *num = ARRAY_SIZE(mt7996_mem_regions); + return &mt7996_mem_regions[0]; + default: + return NULL; + } +} + +static int mt7996_coredump_get_mem_size(struct mt7996_dev *dev) +{ + const struct mt7996_mem_region *mem_region; + size_t size = 0; + u32 num; + int i; + + mem_region = mt7996_coredump_get_mem_layout(dev, &num); + if (!mem_region) + return 0; + + for (i = 0; i < num; i++) { + size += mem_region->len; + mem_region++; + } + + /* reserve space for the headers */ + size += num * sizeof(struct mt7996_mem_hdr); + /* make sure it is aligned 4 bytes for debug message print out */ + size = ALIGN(size, 4); + + return size; +} + +struct mt7996_crash_data *mt7996_coredump_new(struct mt7996_dev *dev) +{ + struct mt7996_crash_data *crash_data = dev->coredump.crash_data; + + lockdep_assert_held(&dev->dump_mutex); + + if (coredump_memdump && + !mt76_poll_msec(dev, MT_FW_DUMP_STATE, 0x3, 0x2, 500)) + return NULL; + + guid_gen(&crash_data->guid); + ktime_get_real_ts64(&crash_data->timestamp); + + return crash_data; +} + +static void +mt7996_coredump_fw_state(struct mt7996_dev *dev, struct mt7996_coredump *dump, + bool *exception) +{ + u32 count; + + count = mt76_rr(dev, MT_FW_ASSERT_CNT); + + /* normal mode: driver can manually trigger assert for detail info */ + if (!count) + strscpy(dump->fw_state, "normal", sizeof(dump->fw_state)); + else + strscpy(dump->fw_state, "exception", sizeof(dump->fw_state)); + + *exception = !!count; +} + +static void +mt7996_coredump_fw_stack(struct mt7996_dev *dev, struct mt7996_coredump *dump, + bool exception) +{ + u32 oldest, i, idx; + + strscpy(dump->pc_current, "program counter", sizeof(dump->pc_current)); + + /* 0: WM PC log output */ + mt76_wr(dev, MT_CONN_DBG_CTL_OUT_SEL, 0); + /* choose 33th PC log buffer to read current PC index */ + mt76_wr(dev, MT_CONN_DBG_CTL_PC_LOG_SEL, 0x3f); + + /* read current PC */ + dump->pc_stack[0] = mt76_rr(dev, MT_CONN_DBG_CTL_PC_LOG); + + /* stop call stack record */ + if (!exception) { + mt76_clear(dev, MT_MCU_WM_EXCP_PC_CTRL, BIT(0)); + mt76_clear(dev, MT_MCU_WM_EXCP_LR_CTRL, BIT(0)); + } + + oldest = (u32)mt76_get_field(dev, MT_MCU_WM_EXCP_LR_CTRL, + GENMASK(20, 16)) + 2; + for (i = 0; i < 16; i++) { + idx = ((oldest + 2 * i + 1) % 32); + dump->pc_stack[i + 1] = + mt76_rr(dev, MT_MCU_WM_EXCP_LR_LOG + idx * 4); + } + + oldest = (u32)mt76_get_field(dev, MT_MCU_WM_EXCP_PC_CTRL, + GENMASK(20, 16)) + 2; + for (i = 0; i < 16; i++) { + idx = ((oldest + 2 * i + 1) % 32); + dump->lr_stack[i] = + mt76_rr(dev, MT_MCU_WM_EXCP_PC_LOG + idx * 4); + } + + /* start call stack record */ + if (!exception) { + mt76_set(dev, MT_MCU_WM_EXCP_PC_CTRL, BIT(0)); + mt76_set(dev, MT_MCU_WM_EXCP_LR_CTRL, BIT(0)); + } +} + +static struct mt7996_coredump *mt7996_coredump_build(struct mt7996_dev *dev) +{ + struct mt7996_crash_data *crash_data = dev->coredump.crash_data; + struct mt7996_coredump *dump; + struct mt7996_coredump_mem *dump_mem; + size_t len, sofar = 0, hdr_len = sizeof(*dump); + unsigned char *buf; + bool exception; + + len = hdr_len; + + if (coredump_memdump && crash_data->memdump_buf_len) + len += sizeof(*dump_mem) + crash_data->memdump_buf_len; + + sofar += hdr_len; + + /* this is going to get big when we start dumping memory and such, + * so go ahead and use vmalloc. + */ + buf = vzalloc(len); + if (!buf) + return NULL; + + mutex_lock(&dev->dump_mutex); + + dump = (struct mt7996_coredump *)(buf); + dump->len = len; + + /* plain text */ + strscpy(dump->magic, "mt76-crash-dump", sizeof(dump->magic)); + strscpy(dump->kernel, init_utsname()->release, sizeof(dump->kernel)); + strscpy(dump->fw_ver, dev->mt76.hw->wiphy->fw_version, + sizeof(dump->fw_ver)); + + guid_copy(&dump->guid, &crash_data->guid); + dump->tv_sec = crash_data->timestamp.tv_sec; + dump->tv_nsec = crash_data->timestamp.tv_nsec; + dump->device_id = mt76_chip(&dev->mt76); + + mt7996_coredump_fw_state(dev, dump, &exception); + mt7996_coredump_fw_stack(dev, dump, exception); + + /* gather memory content */ + dump_mem = (struct mt7996_coredump_mem *)(buf + sofar); + dump_mem->len = crash_data->memdump_buf_len; + if (coredump_memdump && crash_data->memdump_buf_len) + memcpy(dump_mem->data, crash_data->memdump_buf, + crash_data->memdump_buf_len); + + mutex_unlock(&dev->dump_mutex); + + return dump; +} + +int mt7996_coredump_submit(struct mt7996_dev *dev) +{ + struct mt7996_coredump *dump; + + dump = mt7996_coredump_build(dev); + if (!dump) { + dev_warn(dev->mt76.dev, "no crash dump data found\n"); + return -ENODATA; + } + + dev_coredumpv(dev->mt76.dev, dump, dump->len, GFP_KERNEL); + + return 0; +} + +int mt7996_coredump_register(struct mt7996_dev *dev) +{ + struct mt7996_crash_data *crash_data; + + crash_data = vzalloc(sizeof(*dev->coredump.crash_data)); + if (!crash_data) + return -ENOMEM; + + dev->coredump.crash_data = crash_data; + + if (coredump_memdump) { + crash_data->memdump_buf_len = mt7996_coredump_get_mem_size(dev); + if (!crash_data->memdump_buf_len) + /* no memory content */ + return 0; + + crash_data->memdump_buf = vzalloc(crash_data->memdump_buf_len); + if (!crash_data->memdump_buf) { + vfree(crash_data); + return -ENOMEM; + } + } + + return 0; +} + +void mt7996_coredump_unregister(struct mt7996_dev *dev) +{ + if (dev->coredump.crash_data->memdump_buf) { + vfree(dev->coredump.crash_data->memdump_buf); + dev->coredump.crash_data->memdump_buf = NULL; + dev->coredump.crash_data->memdump_buf_len = 0; + } + + vfree(dev->coredump.crash_data); + dev->coredump.crash_data = NULL; +} + diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/coredump.h b/drivers/net/wireless/mediatek/mt76/mt7996/coredump.h new file mode 100644 index 000000000000..af2ba219b1b5 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7996/coredump.h @@ -0,0 +1,97 @@ +/* SPDX-License-Identifier: ISC */ +/* Copyright (C) 2023 MediaTek Inc. */ + +#ifndef _COREDUMP_H_ +#define _COREDUMP_H_ + +#include "mt7996.h" + +struct mt7996_coredump { + char magic[16]; + + u32 len; + + guid_t guid; + + /* time-of-day stamp */ + u64 tv_sec; + /* time-of-day stamp, nano-seconds */ + u64 tv_nsec; + /* kernel version */ + char kernel[64]; + /* firmware version */ + char fw_ver[ETHTOOL_FWVERS_LEN]; + + u32 device_id; + + /* exception state */ + char fw_state[12]; + + /* program counters */ + char pc_current[16]; + u32 pc_stack[17]; + /* link registers */ + u32 lr_stack[16]; + + /* memory content */ + u8 data[]; +} __packed; + +struct mt7996_coredump_mem { + u32 len; + u8 data[]; +} __packed; + +struct mt7996_mem_hdr { + u32 start; + u32 len; + u8 data[]; +}; + +struct mt7996_mem_region { + u32 start; + size_t len; + + const char *name; +}; + +#ifdef CONFIG_DEV_COREDUMP + +const struct mt7996_mem_region * +mt7996_coredump_get_mem_layout(struct mt7996_dev *dev, u32 *num); +struct mt7996_crash_data *mt7996_coredump_new(struct mt7996_dev *dev); +int mt7996_coredump_submit(struct mt7996_dev *dev); +int mt7996_coredump_register(struct mt7996_dev *dev); +void mt7996_coredump_unregister(struct mt7996_dev *dev); + +#else /* CONFIG_DEV_COREDUMP */ + +static inline const struct mt7996_mem_region * +mt7996_coredump_get_mem_layout(struct mt7996_dev *dev, u32 *num) +{ + return NULL; +} + +static inline int mt7996_coredump_submit(struct mt7996_dev *dev) +{ + return 0; +} + +static inline struct +mt7996_crash_data *mt7996_coredump_new(struct mt7996_dev *dev) +{ + return NULL; +} + +static inline int mt7996_coredump_register(struct mt7996_dev *dev) +{ + return 0; +} + +static inline void mt7996_coredump_unregister(struct mt7996_dev *dev) +{ +} + +#endif /* CONFIG_DEV_COREDUMP */ + +#endif /* _COREDUMP_H_ */ diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/init.c b/drivers/net/wireless/mediatek/mt76/mt7996/init.c index 76501e42cd8a..503a7ff24f95 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/init.c @@ -8,6 +8,7 @@ #include "mt7996.h" #include "mac.h" #include "mcu.h" +#include "coredump.h" #include "eeprom.h" static const struct ieee80211_iface_limit if_limits[] = { @@ -857,6 +858,8 @@ int mt7996_register_device(struct mt7996_dev *dev) init_waitqueue_head(&dev->reset_wait); INIT_WORK(&dev->reset_work, mt7996_mac_reset_work); + INIT_WORK(&dev->dump_work, mt7996_mac_dump_work); + mutex_init(&dev->dump_mutex); ret = mt7996_init_hardware(dev); if (ret) @@ -887,13 +890,18 @@ int mt7996_register_device(struct mt7996_dev *dev) dev->recovery.hw_init_done = true; - return mt7996_init_debugfs(&dev->phy); + ret = mt7996_init_debugfs(&dev->phy); + if (ret) + return ret; + + return mt7996_coredump_register(dev); } void mt7996_unregister_device(struct mt7996_dev *dev) { mt7996_unregister_phy(mt7996_phy3(dev), MT_BAND2); mt7996_unregister_phy(mt7996_phy2(dev), MT_BAND1); + mt7996_coredump_unregister(dev); mt76_unregister_device(&dev->mt76); mt7996_mcu_exit(dev); mt7996_tx_token_put(dev); diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c index f5c24985b905..52244b95831c 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c @@ -5,6 +5,7 @@ #include #include +#include "coredump.h" #include "mt7996.h" #include "../dma.h" #include "mac.h" @@ -2083,6 +2084,75 @@ void mt7996_mac_reset_work(struct work_struct *work) wiphy_name(dev->mt76.hw->wiphy)); } +/* firmware coredump */ +void mt7996_mac_dump_work(struct work_struct *work) +{ + const struct mt7996_mem_region *mem_region; + struct mt7996_crash_data *crash_data; + struct mt7996_dev *dev; + struct mt7996_mem_hdr *hdr; + size_t buf_len; + int i; + u32 num; + u8 *buf; + + dev = container_of(work, struct mt7996_dev, dump_work); + + mutex_lock(&dev->dump_mutex); + + crash_data = mt7996_coredump_new(dev); + if (!crash_data) { + mutex_unlock(&dev->dump_mutex); + goto skip_coredump; + } + + mem_region = mt7996_coredump_get_mem_layout(dev, &num); + if (!mem_region || !crash_data->memdump_buf_len) { + mutex_unlock(&dev->dump_mutex); + goto skip_memdump; + } + + buf = crash_data->memdump_buf; + buf_len = crash_data->memdump_buf_len; + + /* dumping memory content... */ + memset(buf, 0, buf_len); + for (i = 0; i < num; i++) { + if (mem_region->len > buf_len) { + dev_warn(dev->mt76.dev, "%s len %zu is too large\n", + mem_region->name, mem_region->len); + break; + } + + /* reserve space for the header */ + hdr = (void *)buf; + buf += sizeof(*hdr); + buf_len -= sizeof(*hdr); + + mt7996_memcpy_fromio(dev, buf, mem_region->start, + mem_region->len); + + hdr->start = mem_region->start; + hdr->len = mem_region->len; + + if (!mem_region->len) + /* note: the header remains, just with zero length */ + break; + + buf += mem_region->len; + buf_len -= mem_region->len; + + mem_region++; + } + + mutex_unlock(&dev->dump_mutex); + +skip_memdump: + mt7996_coredump_submit(dev); +skip_coredump: + queue_work(dev->mt76.wq, &dev->reset_work); +} + void mt7996_reset(struct mt7996_dev *dev) { if (!dev->recovery.hw_init_done) @@ -2099,7 +2169,7 @@ void mt7996_reset(struct mt7996_dev *dev) wiphy_name(dev->mt76.hw->wiphy)); mt7996_irq_disable(dev, MT_INT_MCU_CMD); - queue_work(dev->mt76.wq, &dev->reset_work); + queue_work(dev->mt76.wq, &dev->dump_work); return; } diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c index 536e8dd0edca..510c5facdae8 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c @@ -162,6 +162,14 @@ static u32 __mt7996_reg_addr(struct mt7996_dev *dev, u32 addr) return mt7996_reg_map_l2(dev, addr); } +void mt7996_memcpy_fromio(struct mt7996_dev *dev, void *buf, u32 offset, + size_t len) +{ + u32 addr = __mt7996_reg_addr(dev, offset); + + memcpy_fromio(buf, dev->mt76.mmio.regs + addr, len); +} + static u32 mt7996_rr(struct mt76_dev *mdev, u32 offset) { struct mt7996_dev *dev = container_of(mdev, struct mt7996_dev, mt76); diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h index 45071f0dc2fe..0f668bff1542 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h @@ -192,6 +192,15 @@ struct mib_stats { u32 tx_amsdu_cnt; }; +/* crash-dump */ +struct mt7996_crash_data { + guid_t guid; + struct timespec64 timestamp; + + u8 *memdump_buf; + size_t memdump_buf_len; +}; + struct mt7996_hif { struct list_head list; @@ -251,6 +260,7 @@ struct mt7996_dev { struct work_struct init_work; struct work_struct rc_work; + struct work_struct dump_work; struct work_struct reset_work; wait_queue_head_t reset_wait; struct { @@ -262,6 +272,14 @@ struct mt7996_dev { bool restart:1; } recovery; + /* protects coredump data */ + struct mutex dump_mutex; +#ifdef CONFIG_DEV_COREDUMP + struct { + struct mt7996_crash_data *crash_data; + } coredump; +#endif + struct list_head sta_rc_list; struct list_head sta_poll_list; struct list_head twt_list; @@ -493,6 +511,9 @@ static inline void mt7996_irq_disable(struct mt7996_dev *dev, u32 mask) mt76_set_irq_mask(&dev->mt76, MT_INT_MASK_CSR, mask, 0); } +void mt7996_memcpy_fromio(struct mt7996_dev *dev, void *buf, u32 offset, + size_t len); + void mt7996_mac_init(struct mt7996_dev *dev); u32 mt7996_mac_wtbl_lmac_addr(struct mt7996_dev *dev, u16 wcid, u8 dw); bool mt7996_mac_wtbl_update(struct mt7996_dev *dev, int idx, u32 mask); @@ -511,6 +532,7 @@ void mt7996_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif, struct ieee80211_sta *sta); void mt7996_mac_work(struct work_struct *work); void mt7996_mac_reset_work(struct work_struct *work); +void mt7996_mac_dump_work(struct work_struct *work); void mt7996_mac_sta_rc_work(struct work_struct *work); void mt7996_mac_update_stats(struct mt7996_phy *phy); void mt7996_mac_twt_teardown_flow(struct mt7996_dev *dev, diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/regs.h b/drivers/net/wireless/mediatek/mt76/mt7996/regs.h index fb9b8dec9189..75f856205559 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/regs.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/regs.h @@ -474,6 +474,9 @@ enum base_rev { #define MT_INFRA_MCU_END 0x7c3fffff /* FW MODE SYNC */ +#define MT_FW_ASSERT_CNT 0x02208274 +#define MT_FW_DUMP_STATE 0x02209e90 + #define MT_SWDEF_BASE 0x00401400 #define MT_SWDEF(ofs) (MT_SWDEF_BASE + (ofs)) @@ -508,6 +511,13 @@ enum base_rev { #define MT_LED_EN(_n) MT_LED_PHYS(0x40 + ((_n) * 4)) +/* CONN DBG */ +#define MT_CONN_DBG_CTL_BASE 0x18023000 +#define MT_CONN_DBG_CTL(ofs) (MT_CONN_DBG_CTL_BASE + (ofs)) +#define MT_CONN_DBG_CTL_OUT_SEL MT_CONN_DBG_CTL(0x604) +#define MT_CONN_DBG_CTL_PC_LOG_SEL MT_CONN_DBG_CTL(0x60c) +#define MT_CONN_DBG_CTL_PC_LOG MT_CONN_DBG_CTL(0x610) + #define MT_LED_GPIO_MUX2 0x70005058 /* GPIO 18 */ #define MT_LED_GPIO_MUX3 0x7000505C /* GPIO 26 */ #define MT_LED_GPIO_SEL_MASK GENMASK(11, 8) @@ -561,4 +571,12 @@ enum base_rev { #define MT_WF_PHYRX_CSD_BAND_RXTD12_IRPI_SW_CLR_ONLY BIT(18) #define MT_WF_PHYRX_CSD_BAND_RXTD12_IRPI_SW_CLR BIT(29) +/* CONN MCU EXCP CON */ +#define MT_MCU_WM_EXCP_BASE 0x89050000 +#define MT_MCU_WM_EXCP(ofs) (MT_MCU_WM_EXCP_BASE + (ofs)) +#define MT_MCU_WM_EXCP_PC_CTRL MT_MCU_WM_EXCP(0x100) +#define MT_MCU_WM_EXCP_PC_LOG MT_MCU_WM_EXCP(0x104) +#define MT_MCU_WM_EXCP_LR_CTRL MT_MCU_WM_EXCP(0x200) +#define MT_MCU_WM_EXCP_LR_LOG MT_MCU_WM_EXCP(0x204) + #endif