From patchwork Tue Apr 4 20:03:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Ryder Lee X-Patchwork-Id: 13200939 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A5D9CC6FD1D for ; Tue, 4 Apr 2023 20:04:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=lbEvmoMG8DcwrAyp3RK9DAGflVMVCOWNVtqH207Fk0I=; b=oph4WCcb+Hz9TNbSxjQ798XhCL j07NfLZkGXVSxIkvgi8q19Sjl+gbj8/qEcoKmSiyNgOFOBTGF3h8bvmSNFhRMCSMcmulq2BvUmoau /+CTgZCp+0KV/yH4Id0HACDde2EjtrIg6Uz2n0ezbOMgTMm4yXxLFsF75/xP34H/jLr93dLKJ6mrd SSOMbJofO7TtRXjVoCVRwUy9VvzcXrCBO4MpIehk5YovYBwJOV25kNxx/G7luKCakKgQFrg8OdkKX TAQx7JjKCn5LPgZO7zypgFfSoYB2Ybaq3YVU+f0cZE1IgkX5fyvIi/M50qi9c75NVzUnXJKFp3e9g r4UFRAgg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pjmsk-002luc-18; Tue, 04 Apr 2023 20:03:54 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pjmsd-002lr6-1Y for linux-mediatek@lists.infradead.org; Tue, 04 Apr 2023 20:03:52 +0000 X-UUID: c9d4a1ded32311edb7d8d11f642b8e78-20230404 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=lbEvmoMG8DcwrAyp3RK9DAGflVMVCOWNVtqH207Fk0I=; b=UM5xNjNffriGdtzbRqwlnDpct9BLo32l040lfhph3z6IgnJRT90OsRFl7+sLEHcrZncUKRc0fHq/XbcltW4oedmnZiK5CCVgwrK0W4c3vQMNxBTk1ULb76CV4qBT7n70gcsOcklS8M8Lg4UBQNsLMsdFZwbzM9Mgc/J/7wLus0Q=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.22,REQID:47dfceac-6da9-4c7e-8008-f3f5b6d99766,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:120426c,CLOUDID:fe223fb5-beed-4dfc-bd9c-e1b22fa6ccc4,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 X-CID-BAS: 0,_,0,_ X-UUID: c9d4a1ded32311edb7d8d11f642b8e78-20230404 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 2073377622; Tue, 04 Apr 2023 13:03:38 -0700 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230404_130347_552417_5E958595 X-CRM114-Status: GOOD ( 24.72 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.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